Patent Publication Number: US-2020297147-A1

Title: Electric kettle

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     The present application claims priority under 35 U.S.C. 119 and 35 U.S.C. 365 to Korean Patent Application No. 10-2019-0032612, filed in Korea on Mar. 21, 2019, which is hereby incorporated by reference in its entirety. 
     BACKGROUND 
     1. Field 
     An electric kettle is disclosed herein. 
     2. Background 
     In general, an electric kettle is a device that is supplied with electricity to heat a fluid, such as water contained in a main body using a heating means, such as a heater. An electric kettle is configured such that a main body is detachable from a base to which power is supplied. The main body is heated in a state of being seated on the base and is separated from the base by holding a handle and lifting the main body. This type of an electric kettle is called many names, such as a wireless electric kettle, a wireless electric pot, and a coffee pot. 
     In such an electric kettle, a main body may have a complicated shape and may be made of a plastic material so as to facilitate the arrangement of the internal structure. However, when the electric kettle is used for a long time, harmful components of plastics or fine plastic components may be dissolved in hot water, and the electric kettle is vulnerable to scratches, thus causing internal contamination problems. 
     If a main body is made of a glass material, an electric kettle is excellent in hygiene and looks very good. However, there is a risk of damage due to impact, for example, the heavy weight makes it inconvenient to use, and molding is not easy. 
     Korean Utility Model Registration No. 20-0406420, which is hereby incorporated by reference, discloses a wireless electric pot that has a main body made of stainless steel and is capable of heating water contained therein. In such a structure, the main body is made of a stainless material, which is very hygienic and durable. 
     An upper end and a lower end of a handle are connected to the main body, and in particular, the lower end of the handle has a structure that is connected to a heating part provided with a heater. Water may be heated by turning on an on-off switch provided in the handle. 
     However, in such a structure, the handle is simply provided with a switch for turning on or off the heater, and a configuration for adjusting output is provided in the heating part instead of the handle, which causes inconvenience in use. Further, in order to connect the heating part provided at a lower portion of the main body and the on-off switch provided on the handle, the handle needs to be connected to both the upper portion and the lower portion of the main body. Therefore, the handle has a limited structure, which causes inconvenience in the use of the handle. 
     In addition, a heating wire and a control unit are both disposed on the heating part disposed below the main body. Therefore, a volume of the main body may be increased or an actual water containing space may be reduced. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Embodiments will be described in detail with reference to the following drawings in which like reference numerals refer to like elements, and wherein: 
         FIG. 1  is a perspective view of an electric kettle according to an embodiment; 
         FIG. 2  is an exploded perspective view of the electric kettle of  FIG. 1 ; 
         FIG. 3  is a cross-sectional view taken along line III-Ill′ of  FIG. 1 ; 
         FIG. 4  is a cross-sectional view taken along line IV-IV′ of  FIG. 1 ; 
         FIG. 5  is a perspective view of a lid, when viewed from below, according to an embodiment; 
         FIG. 6  is an exploded perspective view of the lid of  FIG. 5 , when viewed from below; 
         FIG. 7  is a cross-sectional view showing a state in which the lid is mounted on a body which is one component of the electric kettle of  FIG. 1 ; 
         FIG. 8  is an exploded perspective view of an upper body which is one component of the electric kettle of  FIG. 1 ; 
         FIG. 9  is a cutaway perspective view showing a coupling structure of the body and the upper body of  FIG. 8 ; 
         FIG. 10  is a partial enlarged view showing a handle cover of the upper body of  FIG. 8 ; 
         FIG. 11  is an enlarged view showing a handle mounted on the electric kettle of  FIG. 1 ; 
         FIG. 12  is an enlarged view showing a portion A of  FIG. 3 ; 
         FIG. 13  is an exploded perspective view showing a state in which the handle of  FIG. 11  is separated, when viewed from above; 
         FIG. 14  is an exploded perspective view showing a state in which the handle of  FIG. 11  is separated, when viewed from below; 
         FIG. 15  is an exploded perspective view of a handle printed circuit board (PCB) mounted on the handle of  FIG. 11 ; 
         FIG. 16  is a cross-sectional view taken along line XVI-XVI′ of  FIG. 1 ; 
         FIG. 17  is a cutaway perspective view showing a state in which the handle of  FIG. 11  is mounted; 
         FIG. 18  is a cutaway perspective view showing an inside of the electric kettle of  FIG. 1 ; 
         FIG. 19  is a perspective view of the body according to an embodiment; 
         FIG. 20  is a perspective view of the body of  FIG. 19 , when viewed from below; 
         FIG. 21  is a longitudinal sectional view of the body of  FIG. 19 ; 
         FIG. 22  is a partial enlarged cutaway view of a lower end of the body of  FIG. 19 ; 
         FIG. 23  is a cross-sectional view showing a state in which the body of  FIG. 19  is seated on a base which is one component of the electric kettle of  FIG. 1 ; 
         FIG. 24  is an exploded perspective view showing a state in which a bottom cover of the electric kettle of  FIG. 1  is separated, when viewed from below; 
         FIG. 25  is an exploded perspective view showing a connecting structure of the body and a heating module which is one component of the electric kettle of  FIG. 1 ; 
         FIG. 26  is an exploded perspective view of a heating module according to an embodiment; 
         FIG. 27  is a perspective view of the bottom cover according to an embodiment; 
         FIG. 28  is an exploded perspective view of the bottom cover of  FIG. 27 , when viewed from above; 
         FIG. 29  is an exploded perspective view of the bottom cover of  FIG. 27 , when viewed from below; 
         FIG. 30  is a perspective view of a base which is one component of the electric kettle of  FIG. 1 , when viewed from above; 
         FIG. 31  is a perspective view of the base which is one component of the electric kettle of  FIG. 1 , when viewed from below; 
         FIG. 32  is a perspective view showing a state in which a base cover of the base is removed according to an embodiment; 
         FIG. 33  is a cross-sectional view showing a mounted state of the heating module and the base according to an embodiment; 
         FIG. 34  is a block diagram showing a signal flow for operation of the electric kettle according to an embodiment; 
         FIG. 35  is an exploded perspective view of a handle according to another embodiment; and 
         FIG. 36  is an exploded perspective view of a handle according to further another embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, embodiments are not limited to proposed embodiments, and other regressive inventions or other embodiments included in the scope may be easily proposed through addition, change, deletion, and the like of other elements. 
       FIG. 1  is a perspective view of an electric kettle according to an embodiment.  FIG. 2  is an exploded perspective view of the electric kettle of  FIG. 1 .  FIG. 3  is a cross-sectional view taken along line III-Ill′ of  FIG. 1 .  FIG. 4  is a cross-sectional view taken along line IV-IV′ of  FIG. 1 . 
     As shown in  FIGS. 1 to 4 , an electric kettle  1  according to an embodiment may be formed in a cylindrical shape as a whole and may include a base  60 , a body  10 , an upper body  30 , a heating module  50 , a lid  20 , and a handle  40 . The other components except for the handle  40  may be formed in a cylindrical shape and arranged vertically. The handle  40  may protrude from one side of the upper body  30 . 
     The base  60  may be disposed on a floor surface, for example, and a power cord may be connected to the base  60  such that external power may be supplied thereto. The body  10  in an assembled state may be seated on an upper surface of the base  60 . The body  10  may be formed in a cylindrical shape to define a heating space  101  in which fluid, such as water may be contained and heated. The body  10  may be supplied with power in a state of being seated on the base  60 . A power supply method of the base  60  and the body  10  may be a power supply method by contact of a power terminal, for example. Also, the power supply method of the base  60  and the body  10  may be an electromagnetic induction method. The base  60  may be provided with a lower power module  64  serving as a primary coil, and the body  10  may be provided with an upper power module  55  serving as a secondary coil. 
     The body  10  may be formed in a cylindrical shape having an open upper surface and an open lower surface. The open lower surface of the body  10  may be covered by the heating module  50 , and the upper surface of the body  10  may be covered by the lid  20 . As the heating module  50  forms a portion of a lower portion of the body  10 , the heating module  50  may also be referred to as a lower body  50 . 
     The heating module  50  may include a heating plate  52  forming a bottom surface of an inside of the body  10 , and a heater  54  that heats the heating plate  52 . The heating plate  52  may be heated by power supplied from the upper power module  55 . The heating module  50  may include a bottom cover  56  that forms a lower surface of the body  10 . 
     The upper body  30  may be mounted on an upper end of the body  10 . The upper body  30  may be made of a same metal material as that of the body  10 , or may be made of another material but have a same texture. The upper body  30  may be formed in a cylindrical or ring shape having a low height. A spout  311  may protrude from one or a first end of the upper body  30  such that fluid, such as water inside of the body  10  may be poured. 
     The handle  40  may be mounted on a side opposite to the spout  311 . The handle  40  may be mounted on a handle cover  32  that extends outward from one or a first side of the upper body  30 , and may be fixedly mounted on the outer or a second surface of the upper body  30 . 
     The handle  40  may include a handle frame  41  inserted into the handle cover  32  and extending downward so as to allow a user to hold the handle; a handle deco  42  that surrounds an outer surface of the handle frame  41 ; and a grip portion or grip  44  forming a portion of the outer surface of the handle frame  41  facing the body  10 . The handle deco  42  may be made of a material including a same metal or a same appearance as those of the body  10  and the handle cover  32 . At least a portion of the grip  44  may be made of a rubber or a silicone material, for example, so as not to slip when the user holds the handle  40 . 
     The handle cover  32  may be provided with an operation portion  323  (see  FIG. 10 ). The user may input operations, such as an on-off operation or a temperature control operation, through operation of the operation portion  323 . A handle printed circuit board (PCB)  43  may be provided inside of the handle cover  32 , that is, inside of the handle  40 . An electric wire L that connects the handle PCB  43  and the heating module  50  may pass through the body  10 . The handle cover  32  may be further provided with a display  322  that displays an operating state of the electric kettle  1 . 
     The open upper surface of the electric kettle  1 , that is, the upper surface of the upper body  30 , may be covered by the lid  20 . The lid  20  may form the upper surface of the electric kettle  1  in a closed state and may contact a circumference of the upper body  30  to seal an inside of the electric kettle  1 . When the electric kettle  1  is tilted in a state in which the lid  20  is closed, the electric kettle  1  may be configured such that fluid, such as water is poured from the spout  311  through the lid  20 . 
     Hereinafter, components of the electric kettle  1  will be described. Components not described among the components shown in  FIGS. 3 and 4  will be described hereinafter. 
       FIG. 5  is a perspective view of the lid, when viewed from below, according to an embodiment.  FIG. 6  is an exploded perspective view of the lid of  FIG. 5 , when viewed from below.  FIG. 7  is a cross-sectional view showing a state in which the lid of  FIG. 5  is mounted on the body which is one component of the electric kettle. 
     As shown, the lid  20  may be formed in a shape corresponding to an inner cross-section of the electric kettle  1 . An appearance of the lid  20  may be formed by combining an upper case  22  forming an upper appearance and a lower case  23  forming a lower appearance. 
     The upper case  22  may form an upper surface and a portion of a circumferential surface of the lid  20 , and a lid handle  21  may be mounted at a center of the upper case  22 . A coupling hole  211  may be formed at a center of the lid handle  21 , and a screw  223   a  that passes through the center of the upper case  22  may be coupled to the coupling hole  211 . A lid protrusion  223   b  and a lid groove  212  connected to each other may be respectively formed on lower surfaces of the upper case  22  and the lid handle  21  to prevent the lid handle  21  from rotating. 
     The upper case  22  may include a circular upper surface  221  and a circumferential surface  222  that extends downward from a circumference of the upper surface  221 . A lid connecting portion  223  that protrudes downward may be formed at a center of the upper surface  221 . The lid connecting portion  223  may be formed in a circular shape, and an inner portion of the lid connecting portion  223  may be recessed to define a space in which the handle lid  20  may be seated. A groove  223   c  into which a lower rib  233  described hereinafter may be inserted may be formed at an extended lower end of the lid connecting portion  223 . 
     A plurality of reinforcing ribs  226  may be formed radially from an outer surface of the lid connecting portion  223  to the circumferential surface  222  of the upper case  22 . A fluid outlet  222   a  that passes through the circumferential surface  222  may be formed at one or a first side of the circumferential surface  222  of the upper case  22 . The fluid outlet  222   a  may be formed at a position corresponding to spout  311  as a portion that becomes an outlet of the lid  20  when fluid, such as water inside of the electric kettle  1  is poured. The fluid outlet  222   a  may be formed in a grill-like shape as shown, or may include a plurality of holes. 
     Inner walls  224  that extend rearward may be formed at both sides of the fluid outlet  222   a . The inner walls  224  may be formed along a circumference of a fluid inlet  231  described hereinafter. A front end of inner wall  224  may be in contact with both ends of the fluid outlet  222   a . An open lower end of the inner wall  224  may be covered by the lower case  23  when the upper case  22  and the lower case  23  are connected to each other, and may define a fluid outlet space  224   a  to communicate the fluid inlet  231  and the fluid outlet  222   a . Therefore, fluid such as water flowing into the fluid inlet  231  may be discharged to the fluid outlet  222   a  through the fluid outlet space  224   a . That is, fluid, such as water inside of the electric kettle  1  may be poured through the spout  311  after passing through the lid  20 . 
     The lower case  23  may be formed in a disk shape corresponding to the upper case  22 , and a circumference of the lower case  23  may be connected to a circumference of the upper case  22 . Lower rib  233  may protrude from a central portion of the lower case  23  corresponding to the lid connecting portion  223 . The lower rib  233  may be inserted into the groove  223   c  formed at the end of the lid connecting portion  223 , and may be joined to the groove  223   c  by, for example, ultrasonic welding in an inserted state. A lid gasket groove  234 , on which lid gasket  24  may be mounted, may be formed on the circumference of the lower case  23 . 
     The lid gasket  24  may be formed in a ring shape and may be made of a rubber or a silicone material, for example. The lid gasket  24  may be in close contact with an inner circumferential surface of the upper body  30  in a state in which the lid  20  is mounted on the electric kettle  1 , thereby sealing the inside of the electric kettle  1 . 
     A gasket rib  241  that protrudes outward may be formed on an outer surface of the lid gasket  24 . The gasket rib  241  is a portion that is configured to be substantially in contact with the inner circumferential surface of the upper body  30 . The gasket rib  241  may be completely in contact with the inner circumferential surface of the upper body  30  while being deformed when the lid  20  is mounted or removed. 
     A filtering member  25  may be mounted on the fluid inlet  231 . The filtering member  25  may cover the fluid inlet  231  to filter foreign matter from fluid, such as water flowing toward the fluid inlet  231 . The filtering member  25  may include a filter frame  251  having an open central portion and a filter  252  that covers the opening. For example, the filter  252  may be provided with a mesh. 
     The filtering member  25  may be detachable from the fluid inlet  231 . When the filtering member  25  is not required, the filtering member  25  may be separated from the lid  20  so as to discharge fluid more smoothly. 
     The filter frame  251  may be formed in a size corresponding to a size of the fluid inlet  231 . A sliding rib  253  may protrude from both lateral ends of the filter frame  251 , and a filter restraint protrusion  254  may be formed behind the sliding rib  253 . The filter restraint protrusion  254  may protrude toward both sides at a position spaced apart from a rear end of the filter frame  251 . 
     A sliding groove  232 , into which the sliding rib  253  may be inserted, may be formed at both sides of the fluid inlet  231 . The sliding rib  253  may guide movement of the filtering member  25  while moving along the sliding groove  232 . 
     A filter restraint portion  232   a , on which the filter restraint protrusion  254  may be caught and restrained, may be formed at a rear of the sliding groove  232 . In a state in which the filtering member  25  is mounted on the fluid inlet  231 , the sliding rib  253  may be accommodated inside of the sliding groove  232 , and the filter restraint protrusion  254  may be caught and restrained on the filter restraint portion  232   a . Therefore, the filtering member  25  may maintain a mounted state, and if necessary, may be slidably separated by pulling forward. 
     The gasket rib  241  may protrude outward along a circumference of the lid gasket  24 , but the gasket rib  241  is not formed at a portion corresponding to the fluid inlet  231 . That is, a gasket recess  242  may be formed in the lid gasket  24  corresponding to the fluid inlet  231 . Therefore, even in a state in which the lid gasket  24  is mounted on the lid  20 , the lid gasket  24  and the filtering member  25  may be prevented from interfering with each other even if the filtering member  25  is slidably detached from the fluid inlet  231 . 
     The lid  20  may be seated on the upper body  30  in a state of being inserted into the open upper surface of the electric kettle  1 . In a state in which the lid  20  is seated on the upper body  30 , the upper end of the upper case  22  is positioned at a same height as a height of the upper end of the upper body  30 . Therefore, the lid  20  and the upper body  30  may have a sense of unity. 
     Hereinafter, a seating structure of the lid  20  and a structure of the upper body  30  will be described. Components not described among the components shown in  FIG. 7  will be described below. 
       FIG. 8  is an exploded perspective view of an upper body which is one component of the electric kettle of  FIG. 1 .  FIG. 9  is a cutaway perspective view showing a coupling structure of the body and the upper body of  FIG. 8 .  FIG. 10  is a partial enlarged view showing a handle cover of the upper body of  FIG. 8 . 
     As shown in  FIGS. 8 to 10 , the upper body  30  may be mounted on the upper end of the body  10 , and the lid  20  may be seated thereon. The upper body  30  may include a body top  31 , a seating member  34  connected to the body top  31 , and a pair of packings  33  and  35  provided in the seating member  34 . 
     The body top  31  may be made of a metal material, for example, and may be surface-processed to have a same texture as the body  10 . When the upper body  30  is mounted on the upper end of the body  10 , only the body top  31  may be exposed to the outside, and the seating member  34  may be fixed to the upper end of the body  10 . In this state, the body top  31  and the outer surface of the body  10  may be coplanar. 
     The body top  31  may be formed in a ring shape having a same inner diameter and outer diameter as those of the body  10 . The body top  31  may provide a space for accommodating the lid  20  therein. 
     The recessed spout  311  may be formed at an upper end of one or a first side of the body top  31 . The handle cover  32  may be provided at the other or a second side of the body top  31  facing the spout  311 . 
     A packing groove  312  may be formed along a lower end of an inner surface of the body top  31 . The packing groove  312  is a groove in which the upper packing  33  may be mounted and enable a fixed mounting and sealing of the seating member  34 . 
     The seating member  34  may be, for example, injection-molded with a plastic material and may connect the upper body  30  and the body  10  and allow the lid  20  to be seated. That is, the seating member  34  may be formed in a ring shape and may include a seating member upper portion  341  coupled to the upper body  30  and a seating member lower portion  342  coupled to the body  10 . The seating member upper portion  341  may extend vertically and may be sealed in contact with the lid gasket  24  when the lid  20  is mounted. 
     An upper packing mounting portion  345 , on which the upper packing  33  may be mounted, may be formed on an outer surface of the seating member upper portion  341 . An inner surface of the upper packing  33  may be formed in a shape corresponding to the upper packing mounting portion  345  and may be connected to the upper packing mounting portion  345  in a sealed state. The body top  31  and the seating member  34  may be connected to each other by the upper packing  33  and may have a sealed structure. 
     The seating member lower portion  342  may be formed to be slanted such that an inner diameter is narrowed toward a lower side, and a plurality of lid supports  343  may be formed on an inner surface thereof. Each lid support  343  may protrude such that an upper end is in contact with a lower surface of the lid  20 , and the plurality of lid supports  343  may be disposed in a direction facing each other. 
     A lower packing mounting portion  346 , on which the lower packing  35  may be mounted, may be formed on an outer surface of the seating member lower portion  342 . The lower packing  35  may be coupled to the inner surface of the body  10  in a state in which the lower packing  35  is mounted on the lower packing mounting portion  346 . Therefore, the seating member  34  and the upper body  30  may be connected to the body  10  and may have a sealed structure. 
     In a state in which the upper body  30  is mounted, the seating member  34  is fixed to the body top  31  by the upper packing  33 . Therefore, the upper end of the body  10  is inserted between the body top  31  and the seating member  34  so as not to be exposed to the outside. As the lower packing  35  fixed to the lower end of the seating member  34  is inserted into a body restraint groove  124  formed at the upper end of the inner surface of the body  10 , the upper body  30  may maintain the state of being connected to the body  10 . 
     In a state in which the upper body  30  is mounted on the body  10 , an inner diameter of a lower end of the upper body  30  may be equal to the inner diameter of the body  10 , and an outer diameter of the upper body  30  may be identical to the outer diameter of the body  10 . Therefore, in a state in which the upper body  30  and the body  10  are connected to each other, stepped portions are not formed at both the inside and the outside, and the upper body  30  and the body  10  may form a same plane. 
     The handle cover  32 , which allows the handle  40  to be mounted, may be made of a plate-shaped metal material, for example, and may accommodate an upper end of the handle  40 . The handle cover  32  may form the operation portion on a handle cover upper surface  325 , and a handle cover side surface  326  may extend downward along a circumference of the handle cover upper surface  325 . The handle cover upper surface  325  may be positioned at a same height as a height of an upper end of the body top  31 , and a lower end of the handle cover side surface  326  correspond to a lower end of the body top  31 . An open front end of the handle cover  32  may have a shape corresponding to an outer surface of the body top  31  and may be connected by, for example, welding. 
     A body top opening  313  may be formed at the lower end of the body top  31  corresponding to the handle cover  32 . The body top opening  313  may communicate with a front end of the handle cover  32 , and may be formed in a shape recessed at the lower end of the body top  31 . The body top opening  313  may form a hole passing through the body  10  when the upper body  30  and the body  10  are connected to each other, and form an electric wire outlet through which an electric wire L connected to the heating module  50  may pass inside of the handle cover  32  and the handle  40 . 
     As shown in  FIG. 10 , an upper surface of the handle cover  32  may be provided with operation portion  323  for the user to perform a press operation and display  322  that displays the operating state of the electric kettle  1 . The operation portion  323  may be formed on the handle cover upper surface  325  by, for example, printing or surface processing. A switch or a sensor  430   a  may be provided below the operation portion  323 , that is, at a corresponding position inside of the handle cover  32  to sense the operation performed on the operation portion  323 . 
     Two operation portions  323  may be provided in a radial direction. The on/off operation portion  323  among the two operation portions  323  may control an on/off operation of the heating module  50 . The temperature operation portion  323  may set a temperature of fluid, such as water heated by the operation of the heating module  50 . 
     The operation portion  323  may be displayed as two on the handle cover upper surface  325 . Therefore, the user may operate the electric kettle  1  by operating the desired operation portion  323  at the upper end of the handle  40 , that is, the handle cover upper surface  325  in a state in which the user holds the handle. 
     The display  322  may display the temperature of fluid inside of the electric kettle  1 . The display  322  may include a plurality of holes  321 , and a plurality of light emitting diodes (LEDs)  432   b  disposed below the plurality of holes  321  may be turned on to illuminate the plurality of holes  321 . Instead of the plurality of LEDs  432   b , various configurations capable of emitting light may be used. Therefore, the plurality of LEDs  432   b  may be referred to as “light-emitting members”. 
     Temperatures may be displayed in the corresponding plurality of holes  321  by printing or surface processing, for example. The user may check lighting of the corresponding hole  321  to know a current fluid temperature. In order to implement the operation portion  323  and the display  322 , the handle printed circuit board (PCB)  43  may be disposed inside of the handle cover  32 . 
     Hereinafter, a structure of the handle will be described with reference to the accompanying drawings. 
       FIG. 11  is an enlarged view showing a handle mounted on the electric kettle of  FIG. 1 .  FIG. 12  is an enlarged view showing a portion A of  FIG. 3 .  FIG. 13  is an exploded perspective view showing a state in which the handle of  FIG. 11  is separated, when viewed from above.  FIG. 14  is an exploded perspective view showing a state in which the handle of  FIG. 11  is separated, when viewed from below. 
     As shown in  FIGS. 11 and 14 , the handle  40  may be mounted on the handle cover  32  and may protrude toward one or a first side of the body  10 . In the handle cover  32 , an upper portion of the handle  40  may be fixedly mounted, and the rest of the handle  40  may extend downward at a position spaced apart from an outer surface of the body  10 , thereby allowing the user to hold the handle cover  32  with his or her hand. That is, the handle  40  has a structure in which only the upper end of the handle  40  is fixed to the upper end of the body  10  or one side of the upper body  30 , and the rest of the handle  40  is spaced apart from the body  10 . 
     The handle cover  32  may be made of a same metal material as the material of the upper body  30  and the body  10 , and may be formed to have a sense of unity in a state of being connected to the upper body  30 . In addition, the handle  40  may be provided with handle deco  42  made of a same material as the material of the body  10 , the upper body  30 , and the handle cover  32  to form an appearance of the handle  40 , thereby forming an appearance having a sense of unity. 
     The handle cover  32  may be formed such that a lower surface thereof is open, and a cover boss  327  that extends downward may be formed inside of the open handle cover  32 . The cover boss  327  may be disposed at a position corresponding to the handle PCB  43  and may pass through the handle PCB  43 . That is, the cover boss  327  may extend downward from an upper surface of the handle cover  32 , and a pair of cover bosses  327  may be formed on both lateral sides. The pair of cover bosses  327  may be inserted into a frame mounting portion  412  described below, and a screw  417  passing through the frame mounting portion  412  may be coupled thereto. 
     Hereinafter, a structure of the handle  40  will be described. The handle  40  may include a handle frame  41  fixedly mounted inside of the handle cover  32 ; grip portion or grip  44  connected to the handle frame  41 ; and handle PCB  43  and handle deco  42  provided inside of the handle frame  41 . The handle cover  32  has a structure that accommodates an upper portion of the handle frame  41  and may be regarded as a configuration of the handle  40 . 
     The handle frame  41  may be, for example, injection-molded with a plastic material and may form an internal structure of the handle  40  as a whole. The handle frame  41  may include an upper portion  411  and a lower portion  413 . 
     The upper portion  411  may form an upper portion of the handle frame  41 , and upper and lower surfaces and a front surface thereof may be opened. The upper portion  411  may be formed in a shape corresponding to a shape of the handle cover side surface  326 . Therefore, when the handle  40  is mounted on the handle cover  32 , an outer surface of the upper portion  411  may be in close contact with an inner surface of the handle cover side surface  326 . A space in which the handle PCB  43  may be accommodated may be formed inside of the upper portion  411 . An upper surface of a space inside of the upper portion  411  may be covered by the handle cover  32 , a lower surface of the space inside of the upper portion  411  may be cover by the grip portion  44 , and a front surface of the space inside of the upper portion  411  may be covered by the upper body  30 , thereby completing a closed space in which the handle PCB  43  may be accommodated. 
     The frame mounting portion  412  may be formed on the inner side surface of the upper portion  411 . The frame mounting portion  412  may protrude from the inner surface of the upper portion  411  and may extend lengthwise from the upper end of the upper portion  411 . A mounting hole  412   a  may be formed in a center of the frame mounting portion  412 . The mounting hole  412   a  may pass through the frame mounting portion  412  and be formed at a position corresponding to the cover boss  327 , such that the cover boss  327  may be inserted into the mounting hole  412   a . The screw  417  may be coupled to an open lower end of the mounting hole  412   a , and the screw  417  may be connected to the cover boss  327  through the mounting hole  412   a.    
     The handle PCB  43  may be provided on an inner surface of the upper portion  411 . The handle PCB  43  may include a plurality of PCBs and may have a structure in which the plurality of PCBs is continuously arranged vertically. The plurality of handle PCBs  43  may have a structure that is restrained by the frame mounting portion  412 , and thus, may maintain a state of being fixedly mounted inside of the upper portion  411 . 
     The plurality of handle PCBs  43  may include a touch PCB  430  on which a touch sensor  430   a  may be mounted; a display PCB  432  on which an LED  432   b  that irradiates light to the display  322  may be mounted; and an operation PCB  433  provided below the display PCB  432  to control operation of the heater  54 . The touch PCB  430  may be provided with the touch sensor  430   a  and the touch booster  431 . The display PCB  432  may be provided with the LED  432   b , and a light guide  435  may be further provided at a position corresponding to the LED  432   b.    
     As the handle PCB  43  controls the overall operation of the electric kettle  1 , the handle PCB  43  may be referred to as “main PCB  43 ”. Structure of the main PCB  43  will be described hereinafter. 
     The outer surface of the upper portion  411  is in contact with the handle cover side surface  326 , and the upper end of the upper portion  411  is in contact with the handle cover upper surface  325 . A front end  411   a  of the upper portion  411  may be in contact with the outer surface of the body top  31  forming the upper body  30 . The front end of the upper portion  411  may be formed in a slanted or rounded shape corresponding to a curvature of the outer surface of the body top  31  so as to be in close contact with the outer surface of the body top  31 . Therefore, the handle  40  may maintain a state of being stably and firmly fixed to the handle cover  32  and the upper body  30 . 
     A first connecting groove  411   b , which may be connected to a first coupling portion  441   a  when connected to the grip portion  44 , may be formed in an inner surface of the upper portion  411 . The first connecting groove  411   b  may be recessed in inner surfaces of both sides of the upper portion  411  and may be formed at a position corresponding to an end of the first coupling portion  441   a.    
     The lower portion  413  may extend downward from a lower end of the upper portion  411 . The upper portion  411  may be formed in a shape in which a plate-shaped structure is bent at one side and symmetric with each other, and the lower portion  413  may have a structure that extends downward along the bent portion of the upper portion  411 . That is, when the handle frame  41  is viewed from a side, the upper portion  411  may extend from the upper end in the horizontal direction, and the lower portion  413  may have a structure that extends downward from one end of the upper portion  411 . 
     The lower portion  413  may be formed in a rounded shape along the curvature of the upper portion  411  and may form a recessed space therein. The rounded shape of the lower portion  413  allows the user to easily wrap the handle  40 . 
     The lower portion  413  has a structure that is opened rearward, and a plurality of second connecting grooves  413   a  is formed at both sides of the lower portion  413 . The plurality of second connecting grooves  413   a  is a portion to which the second coupling portion  442   a  of the grip portion  44  is connected when the grip portion  44  and the lower portion  413  are connected to each other, and the plurality of second connecting grooves  413   a  is formed at a position corresponding to the second coupling portion  442   a  to allow the second coupling portion  442   a  to be caught and restrained. A plurality of the second connecting grooves  413   a  may be formed at regular intervals in a vertical direction. The plurality of second connecting grooves  413   a  may be formed to pass through the lower portion  413  or may be recessed in an inner surface of the lower portion  413 . 
     A lower cap  414  may be formed at a lower end of the lower portion  413 . The lower cap  414  may be formed in a planar shape at the lower end of the lower portion  413  and cover an opening of the handle deco  42 . The lower cap  414  may be formed in a disk shape and may be formed in a same shape as a shape of the opening of the handle deco  42 . The handle  40  may be exposed through the opening of the handle deco  42  in an assembled state, thereby forming an appearance of a lower end of the handle  40 . 
     The handle deco  42  may be made of a same stainless material as a material of the body  10  and the handle cover  32 , and may surround an outer surface of the handle  40 , and more particularly, an outer surface of the lower portion  413 . The handle deco  42  may cover the rest of the handle frame  41  exposed to the outside in a state in which the handle frame  41  is mounted on the handle cover  32 . The handle deco  42  may be made of a plate-shaped material and may be formed to be bent. The handle deco  42  may be formed in a shape corresponding to the outer surface of the lower portion  413  to be in close contact with the outer surface of the lower portion  413 . The handle deco  42  may be attached to the lower portion  413  by, for example, an adhesive or an adhesive tape. 
     A deco fixing portion  423  extending to surround the lower end of the grip portion  44  may be formed at the lower end of the handle deco  42 . The deco fixing portion  423  may have a cross-sectional structure corresponding to the lower cap  414  and may be molded in a ring-like shape. Lower ends of the handle frame  41  and the grip portion  44  connected to each other may be inserted into the open inside of the deco fixing portion  423 . The lower ends of the handle frame  41  and the grip portion  44  connected to each other may be fixed inside of the deco fixing portion  423 . In addition, an opening  422  formed by the deco fixing portion  423  may be covered by the lower cap  414 . 
     The grip portion  44  forms the shape of a rear half of the handle  40  by covering the open lower surface and the rear surface of the handle frame  41 . The grip portion  44  may be made of a plastic material, for example, and may be connected to the handle frame  41  to form a shape that allows the user to hold the grip portion  44  with his or her hand. 
     The grip portion  44  may include an upper grip portion  441  and a lower grip portion  442 . The upper grip portion  441  may be formed to cover the open lower surface of the upper portion  411 . Both lateral ends of the upper grip portion  44  may be in contact with lateral sides of the lower end of the upper portion  411 , and front end  441   b  of the upper grip portion  44  may be in contact with the outer surface of the body top  31 . Therefore, the front end  441   b  of the grip portion  44  may have a curvature corresponding to the outer surface of the body top  31 . 
     First coupling portions  441   a  may be formed at both sides of the upper grip portion  44  to connect the grip portion  44  to the handle frame  41 . The first coupling portions  441   a  may extend to a position corresponding to first connecting groove  411   b  formed in the upper portion  411 . An end of the first coupling portion  441   a  may be formed in a hook shape and may be caught and restrained by the first connecting groove  411   b.    
     The lower grip portion  442  extending downward may be formed at a rear end of the upper grip portion  441 . The lower grip portion  442  may be formed in a shape corresponding to the lower portion  413  of the handle frame  41 . The lower grip portion  442  may protrude forward in a rounded shape and have an inside having a recessed shape. Therefore, when the lower grip portion  442  is connected to the lower portion  413 , the handle  40  has a shape which may be easily held by the user. 
     Both lateral ends of the lower grip portion  442  are in contact with both ends of the lower portion  413 . A plurality of second coupling portions  442   a  protruding toward the lower portion  413  may be formed at both sides of the lower grip portion  44 . The second coupling portion  442   a  may extend to a position corresponding to the second connecting groove  413   a  formed in the lower portion  413 . An end of the second coupling portion  442   a  may be formed in a hook shape and may be caught and restrained by the second connecting groove  413   a.    
     A grip stepped portion  442   c  may be formed at a lower end of the lower grip portion  44 , and the grip stepped portion  442   c  may be inserted into the deco fixing portion  423 . Therefore, in a state in which the handle frame  41  and the grip portion  44  are fixed, the lower end of the handle  40  may be further firmly fixed by the deco fixing portion  423  of the handle deco  42 . 
     One or a first side of the grip portion  44  may be formed with an uneven shape or a wrinkle shape in order to prevent slipping when the user grips by hand. Therefore, the user may lift the electric kettle  1  while holding the grip portion  44  stably. The grip portion sheet  442   b  may be attached to at least a portion of the grip portion  44 . The grip portion sheet  442   b  may be made of a material having high frictional force, such as rubber or silicone, so as to further prevent the handle  40  from slipping from the user. 
     A communication unit  45  may be provided in the space inside of the handle  40 . When the grip portion  44  and the handle frame  41  are connected to each other, a space may be formed between the lower portion  413  and the lower grip portion  44 . The communication unit  45  may be provided inside of the space formed by the lower grip portion  44  and the lower portion  413 . 
     The communication unit  45  may provide wireless communication of the electric kettle  1  and may be configured with various communication modules capable of performing communication in a scheme, such as Wifi, ZigBee, and NFC. The communication unit  45  may be connected to the handle PCB  43  to control the overall operation of the electric kettle  1  using wireless communication. 
       FIG. 15  is an exploded perspective view of the handle PCB mounted on the handle of  FIG. 11 .  FIG. 16  is a cross-sectional view taken along line XVI-XVI′ of  FIG. 1 .  FIG. 17  is a cutaway perspective view showing a state in which the handle of  FIG. 11  is mounted. 
     As shown in  FIGS. 15 to 17 , the handle PCB  43  may include the touch PCB  430 , the display PCB  432 , and the operation PCB  433 , and may be disposed inside of the handle cover  32  and the handle frame  41 . The touch PCB  430 , the display PCB  432 , and the operation PCB  433  may be formed to have a same width and may be continuously disposed in the vertical direction. 
     The touch PCB  430  may be disposed to be in contact with the upper surface of the handle cover  32 , and the touch sensor  430  may be provided with the touch sensor  430   a . The touch sensor  430  may be, for example, a piezo type touch sensor using a piezoelectric element so as to prevent erroneous detection and effectively sense the touch of the handle cover  32  made of a stainless material. That is, the touch of the user may be recognized by sensing deformation of the upper surface of the handle cover  32  during the operation of the operation portion  323 . Therefore, it is possible to prevent misrecognition in the handle  40  which the user&#39;s hand touches frequently and to effectively recognize effective operation. 
     The touch sensor  430   a  may be disposed at a position corresponding to the operation portion  323 . Therefore, when the user presses the operation portion  323 , the touch sensor  430   a  may detect the pressing and generate a signal for operation. 
     A touch booster  431  may be further provided on an upper surface of the touch PCB  430 . The touch booster  431  is configured to more effectively transmit deformation of the upper surface of the handle cover  32  to the touch sensor  430   a  when the operation portion is operated. The touch booster  431  may be made of a plate-shaped material, and an opening may be formed at a position corresponding to the touch sensor  430   a . A pressing portion  431   a  may be formed inside of the opening, and a connecting portion  431   b  that extends radially toward the outside of the pressing portion  431   a  may be formed. In this case, a center of the pressing portion  431   a  may be disposed on a same extension line as a central portion of the touch sensor  430   a . The connecting portion  431   b  may have a structure that is elastically deformable such that the pressing portion  431   a  may be moved up and down. Therefore, when the upper surface of the handle cover  32  is pressed, a force of pressing on the touch sensor  430   a  by the pressing portion  431   a  may be more effectively transmitted. 
     The display PCB  432  may be provided below the touch PCB  430 . The display PCB  432  may be formed in a same shape as a shape of the touch PCB  430 , and a front end of the display PCB  432  may extend further forward than the touch PCB  430 . 
     The plurality of LEDs  432   b  may be disposed along the front end of the display PCB  432 . The LEDs  432   b  may be provided in a number corresponding to the holes  321  of the handle cover upper surface  325  at positions corresponding to the holes  321  of the handle cover upper surface  325 . 
     The light guide  435  may be provided at a front end of the display PCB  432 . The light guide  435  may include a guide portion  435   a  that guides light emitted from the LEDs  432   b  toward the holes  321 , and a supporting portion  435   b  that extends downward from a front end of the guide portion  435   a.    
     The guide portion  435   a  may connect an upper surface of the touch PCB  430  to the handle cover upper surface  325 . Guide holes  435   c  may be formed in the guide portion  435   a  at positions corresponding to the holes  321  of the handle cover upper surface  325  and the LEDs  432   b . Therefore, when the LEDs  432   b  are turned on, light emitted from the LEDs  432   b  may be irradiated through the guide holes  435   c  and the holes  321  of the handle cover upper surface  325 . 
     One or a first surface of the supporting portion  435   b  may be in close contact with the outer surface of the body top  31 , and the other or a second surface of the supporting portion  435   b  may be in close contact with the front end of the display PCB  432  and the front end of the operation PCB  433 . That is, the supporting portion  435   b  may fill a space between the front ends of the body top  31 , the display PCB  432 , and the operation PCB  433  such that the display PCB  432  and the operation PCB  433  are further fixed inside the handle cover  32  without movement. 
     The supporting portion  435   b  may have a curvature corresponding to a curvature of the body top  31 . The front ends of the display PCB  432  and the operation PCB  433  in contact with the supporting portion  435   b  may also be formed with the same curvature. 
     The operation PCB  433  may be provided below the display PCB  432  and may have a same size and shape as a size and shape of the display PCB  432 . When the user presses the operation portion  323 , the operation PCB  433  allows the fluid to be heated by turning the heater  54  on or off according to a signal generated from the touch sensor  430   a.    
     The touch PCB  430 , the display PCB  432 , and the operation PCB  433  may be stacked while being spaced apart from each other. In this case, spacers  432   c  and  433   b  may be provided between the touch PCB  430  and the display PCB  432  and between the display PCB  432  and the operation PCB  433 . Due to the spacers  432   c  and  433   b , the touch PCB  430 , the display PCB  432 , and the operation PCB  433  may be mounted to maintain a predetermined vertical interval. 
     Touch PCB grooves  430   b , display PCB grooves  432   a , and operation PCB grooves  433   a  may be formed on both sides of the touch PCB  430 , the display PCB  432 , and the operation PCB  433 , respectively. The touch PCB grooves  430   b , the display PCB grooves  432   a , and the operation PCB grooves  433   a  may be formed at positions corresponding to the frame mounting portion  412 . The frame mounting portion  412  may be inserted at both sides such that the touch PCB  430 , the display PCB  432 , and the operation PCB  433  maintain a fixedly mounted state. In addition, the touch PCB  430 , the display PCB  432 , and the operation PCB  433  may be in contact with an inner surface of the upper portion  411 , and may also be in contact with the outer surface of the body top  31 , such that the handle PCB  43  maintains a state of being stably mounted inside of the handle  40 . 
     In a state in which the handle  40  is mounted inside of the handle cover  32 , an entire upper portion of the upper portion  411  may be fixed in close contact with the inner surface of the handle cover  32 . The front end  411   a  of the upper portion  411  may be in close contact with the body top  31 . The front end  411   a  of the upper portion  411  has a curvature corresponding to the outer surface of the body top  31 , thereby firmly connecting to the body top  31 . In addition, the front end  411   a  of the upper portion  411  extends lengthwise in the vertical direction from the inside of the handle cover  32  to support the body top  31  while crossing in the vertical direction. 
     In a situation in which the electric kettle  1  is lifted by holding the handle  40 , a load may be concentrated on an upper region of the handle  40  to which the handle  40  is connected by a moment. However, the upper portion  411  of the handle  40  has a structure which is restrained by the handle cover  32  and the upper body  30 , such that the electric kettle  1  may maintain a firmly and stably connected state and a supported state. 
     The open front end of the handle  40 , that is, the front surface of the upper body  30  faces the body top  31 , and may communicate with the electric wire outlet  103  open at the upper end of the body  10  and the body top  31 . Therefore, the handle PCB  43  disposed inside of the handle cover  32  and the upper body  30  may be connected to the electric wire L passing through the body  10  and the electric wire outlet  103 . Therefore, the handle PCB  43  may be connected to the heating module  50  and may control operation of the heater  54 . 
     Hereinafter, structure of the body  10  will be described with reference to the accompanying drawings. 
       FIG. 18  is a cutaway perspective view showing an inside of the electric kettle of  FIG. 1 .  FIG. 19  is a perspective view of the body according to an embodiment.  FIG. 20  is a perspective view of the body of  FIG. 19 , when viewed from below.  FIG. 21  is a longitudinal sectional view of the body of  FIG. 19 .  FIG. 22  is a partial enlarged cutaway view of the lower end of the body of  FIG. 19 . 
     As shown in  FIGS. 18 to 22 , the body  10  may be formed in a cylindrical shape and may be formed to have the same outer diameter as those of the base  60  and the upper body  30 . The body  10  may be formed in a cylindrical shape open vertically, and the open lower surface of the body  10  may be covered by the heating module  50  described hereinafter. That is, fluid, such as water contained in the body  10  may be heated by the heating module  50 . 
     The body  10  may include an inner body  12  and an outer body  11 , and a space may be formed between the inner body  12  and the outer body  11 , thereby providing significantly improved heat insulation performance as compared with a single wall structure. 
     The inner body  12  and the outer body  11  may be made of a same stainless steel material. The outer body  11  may form an appearance of the body  10 , and the inner body  12  may form a space in which fluid may be contained. The inner body  12  has a diameter smaller than that of the outer body  11 , and thus, the inner body  12  may be accommodated inside of the outer body  11 . Therefore, a space  102  may be formed between the outer body  11  and the inner body  12 . 
     The space  102  between the outer body  11  and the inner body  12  may have an air layer formed therein to prevent heat from being directly transferred to the outer body  11 . Therefore, the space  102  may be referred to as “heat insulation space  102 ”. The outer body  11  may maintain a relatively low temperature even when the fluid contained in the inner body  12  is heated to a hot state. 
     The heat insulation space  102  may communicate with a space in which the heating module  50  is disposed and an inner space of the handle  40 . Therefore, the electric wire L connected to the handle PCB  43  disposed at the handle  40  may pass through the heat insulation space  102  between the outer body  11  and the inner body  12  and be guided to the space in which the heating module  50  is disposed. Therefore, the space between the outer body  11  and the inner body  12  may be referred to as an “electric wire passage” or an “electric wire guide space”. 
     The body  10  may be formed by connecting the upper ends and the lower ends of the outer body  11  and the inner body  12  formed in the cylindrical shape. For example, the upper ends and the lower ends of the outer body  11  and the inner body  12  may be connected to each other in a stacked state by, for example, welding. In this case, other portions except for the upper ends and the lower ends of the outer body  11  and the inner body  12  may be spaced apart by a predetermined interval to form a heat insulation structure. 
     A structure of the upper end of the body  10  will be described hereinafter. An outer upper end portion  112  may be formed at the upper end of the outer body  11 . The outer upper end portion  112  may extend upward to form the upper end of the outer body  11 , but may be formed in an inwardly stepped shape. The outer upper end portion  112  may be inserted into the upper body  30 , and the outer surface of the upper body  30  and the outer surface of the outer body  11  may be coplanar. 
     An inner upper end portion  122  may be formed at the upper end of the inner body  12 . The inner upper end portion  122  may extend upward to form the upper end of the inner body  12 . The inner upper end portion  122  may extend to a same height as that of the outer upper end portion  112  and may be in surface contact with the outer upper end portion  112 . The outer upper end portion  112  and the inner upper end portion  122  may be inserted into a space between the body top  31  and the seating member  34  of the upper body  30  in a connected state. Therefore, the upper end of the body  10  may be covered by the upper body  30  so as not to be exposed. 
     An inner slant portion  123  may be formed along a lower end of the inner upper end portion  122 . The inner slant portion  123  may slanted such that an inner diameter thereof is narrowed toward a lower side, and may have a slant corresponding to a slanted lower portion of the seating member  34 . Therefore, the inner slant portion  123  enables the seating member  34  to be stably supported. 
     The body restraint groove  124  may be formed along a lower end of the inner slant portion  123 . The body restraint groove  124  may be recessed outward such that the lower packing  35  mounted on the upper body  30  may be press-fitted. In order to mount the upper body  30 , the upper body  30  may be inserted from above the body  10 . In this case, the lower packing  35  may be press-fitted into the body restraint groove  124  to allow the upper body  30  to be fixed. The inner body  12  may extend downward from an end of the body restraint groove  124  and may extend downward in parallel with the outer body  11  while maintaining a predetermined distance. 
     An outer cutout portion  111  and an inner cutout portion  121  may be respectively formed at the upper end of the inner body  12  and the upper end of the outer body  11 , which correspond to the mounting position of the handle cover  32 . The outer cutout portion  111  and the inner cutout portion  121  may be formed at a same position and may be formed at a position corresponding to the mounting position of the handle  40 . The outer cutout portion  111  and the inner cutout portion  121  may communicate with the open front surface of the handle cover  32 . Therefore, when the upper body  30  is mounted on the body  10 , the body top opening  313 , the outer cutout portion  111 , and the inner cutout portion  121  may be positioned at positions corresponding to each other, electric wire outlet  103  through which the electric wire L guided through the heating space  101  between the inner body  12  and the outer body  11  enters and exits may be formed. 
     A packing mounting portion  127  may be formed at a lower portion of the inner surface of the inner body  12 . The packing mounting portion  127  may be provided to mount the heating module  50  and may protrude along the inner surface of the inner body  12  at a position corresponding to the mounting position of the heating module  50 . The packing mounting portion  127  may be positioned slightly above the lower end of the outer body  11 . Therefore, the heating module  50  may be mounted such that the heating module  50  may be accommodated inside of the inner body  12 . 
     The packing mounting portion  127  may be formed by bending the inner body  12  and may be formed such that a plate packing  51 , which is one component of the heating module  50 , may be caught and restrained. A plate mounting portion  126  having an inner diameter larger than that of the packing mounting portion  127  may be formed at a lower end of the packing mounting portion  127 . The plate mounting portion  126  is a portion in which a heating plate  52  described below may be fixedly mounted and may have an inwardly recessed structure. In this case, an inner diameter of the plate mounting portion  126  may be equal to an inner diameter of the inner body  12  above the packing mounting portion  127 . The plate mounting portion  126  has an inner diameter larger than that of the packing mounting portion  127  and an inner lower end portion  125  described hereinafter. A vertical width of the plate mounting portion  126  may be determined according to the vertical width of the packing mounting portion  127 . 
     An electric wire inlet  128  through which the electric wire L may pass may be formed on one or a first side of the plate mounting portion  126 . The electric wire inlet  128  is a hole through which the electric wire L connected to the heating module  50  may pass and may be open at the first side of the plate mounting portion  126  corresponding to the position of the handle  40 . That is, the electric wire inlet  128  may be positioned on a same extension line as the electric wire outlet  103  below the electric wire outlet  103 . Therefore, the electric wire L introduced into the electric wire inlet  128  may pass through the space between the inner body  12  and the outer body  11  and may be guided to the inside of the handle cover  32  through the electric wire outlet  103  disposed at the upper end of the body  10 . 
     The inner lower end portion  125  forming the lower end of the inner body  12  may be formed at the lower end of the plate mounting portion  126 . The inner lower end portion  125  may be bent and extend downward from the lower end of the plate mounting portion  126 . 
     An inner diameter of the inner lower end portion  125  may be greater than or equal to the inner diameter of the packing mounting portion  127  such that the heating module  50  may be inserted through the inner lower end portion  125 . The inner lower end portion  125  may extend further downward than the outer body  11  and may be connected to the bottom cover  56  described hereinafter. 
     The lower end of the outer body  11  may extend to the lower end of the plate mounting portion  126  of the inner body  12 . An outer lower end portion  113 , which is bent toward the inner side, that is, the outer surface of the inner body  12 , may be formed at the end of the outer body  11  corresponding to the plate mounting portion  126 . 
     The outer lower end portion  113  may be formed at a height corresponding to a lower end of the plate mounting portion  126  and may extend to an outer end of the inner body  12 . That is, an extended end of the outer lower end portion  113  may come into contact with the lower end of the plate mounting portion  126  or an upper end of the inner lower end portion  125 . The outer lower end portion  113  may be connected to the lower end of the plate mounting portion  126  or the upper end of the inner lower end portion  125  by, for example, welding. Therefore, the inner body  12  and the outer body  11  have a structure in which the upper end and the lower end are connected to each other. 
     A body hole  114  may be formed along the outer lower end portion  113 . A plurality of body holes  114  may be disposed along the outer lower end portion  113  at regular intervals. The body holes  114  may be formed in a shape in which an extended end of the outer lower end portion  113  is cut away. Remaining portions of the outer lower end portion  113  except for the body hole  114  come into contact with the outer surface of the inner body  12 . Therefore, the body hole  114  may naturally become an opening communicating with a space between the inner body  12  and the outer body  11  in the process in which the outer lower end portion  113  is connected to or comes into contact with the outer surface of the inner body  12 . 
     The body  10  may be made of a stainless steel material and may be formed by a process such as welding, for example. Therefore, the body  10  may be smoothed by electropolishing and maintain a smooth surface in the internal space in which fluid is contained. Also, inner and outer surfaces of the body  10  may have corrosion resistance through electropolishing. For this reason, the body  10  may be subjected to the electropolishing process after the inner body  12  and the outer body  11  are connected to each other. 
     In order for electropolishing in a state in which the inner body  12  and the outer body  11  are connected to mold the body  10 , electropolishing may be performed after the body  10  is immersed in an electrolyte. In this process, due to structural characteristics of the body  10 , the electrolyte is inevitably introduced into the heat insulation space  102  between the inner body  12  and the outer body  11 . That is, the electric wire inlet  128  and the electric wire outlet  103  are opened in a state in which the body  10  is molded, and when the body  10  is immersed in the electrolyte, the electrolyte is introduced through the electric wire inlet  128  and the electric wire outlet  103 . Therefore, the electrolyte is inevitably introduced between the inner body  12  and the outer body  11 . 
     When the body  10  is lifted after the electropolishing is completed, as shown in  FIG. 25 , the electrolyte between the inner body  12  and the outer body  11  may be smoothly discharged downward through the body hole  114 . In addition, even when the body  10  is washed after the electropolishing is completed, the electrolyte between the inner body  12  and the outer body  11  may be naturally discharged through the body hole  114  when the body  10  is immersed and washed in a cleaning solution and then lifted. Therefore, even when the electrolyte is removed after the electropolishing process and the body  10  is washed after the electropolishing, remaining liquids in the body  10  may be smoothly discharged. 
     A see-through window  13  may be formed in the body  10 . The see-through window  13  allows the user to check a fluid level or boiling state of fluid in the electric kettle  1  from the outside of the electric kettle  1  without opening the lid. The see-through window  13  may extend in the vertical direction and may be fixedly mounted on each of the inner body  12  and the outer body  11 . In this case, the see-through window  13  may be mounted on the body  10  in a sealed state. The see-through window  13  may include a see-through window front surface  131  exposed to the outside, a see-through window side surface  132  bent vertically along a circumference of the see-through window front surface  131 , and a see-through window circumference portion  134  bent outward along an extended end of the see-through window side surface  132 . 
     An inner mounting portion  117  and an outer mounting portion  115  for mounting the see-through window  13  may be formed in the inner body  12  and the outer body  11 . The inner mounting portion  117  and the outer mounting portion  115  may be opened at positions facing each other, such that the see-through window  13  passes through the body  10  and is mounted therein. 
     The inner mounting portion  117  may be opened to pass through the inner body  12 . The inner mounting portion  117  may be recessed in an outwardly stepped shape and may be formed along a circumference of the see-through window  13 . That is, the inner mounting portion  117  extends from the inner body  12  toward the outer body  11 , and the extended end thereof may be bent inward to form an opening in which the see-through window  13  may be mounted. The see-through window circumference portion  134  bent outward along the circumference of the see-through window  13  may be disposed in the stepped circumference of the inner mounting portion  117 . 
     A see-through window gasket  135  may be mounted between the inner mounting portion  117  and the see-through window circumference portion  134 . The see-through window gasket  135  may be sealed between the inner mounting portion  127  and the see-through window circumference portion  134  to prevent leakage of fluid inside of the inner body  12 . The see-through window gasket  135  may be formed in a shape corresponding to the see-through window circumference portion  134  and the inner mounting portion  117 . The see-through window gasket  135  may be inserted along the open end of the inner mounting portion  117  to maintain a state of being fixedly mounted on the inner mounting portion  117 . 
     When the see-through window gasket  135  and the see-through window circumference portion  134  are seated on the inner mounting portion  117 , the see-through window circumference portion  134  and the inner surface of the inner body  12  may be coplanar. Therefore, as portions protruding inward from the inner body  12  are not formed in a state in which the see-through window  13  is fixedly mounted on the body  10 , the internal structure is simple and easy to clean. 
     The outer mounting portion  115  may be opened to pass through the outer body  11  and may be opened in a shape corresponding to the see-through window front surface  131 . The outer mounting portion  115  may be bent toward the inner body  12 . Therefore, the outer mounting portion  115  may support the see-through window side surface  132  in a close contact state. In this case, the see-through window front surface  131  and the outer body  11  may be coplanar. Therefore, the outer surfaces of the see-through window  13  and the outer body  11  do not protrude or are not recessed in a state in which the see-through window  13  is mounted, thereby further improving the appearance. 
     In addition, the see-through window  13  may be in close contact with a circumference of the outer mounting portion  115  in a mounted state and sealed by the inner mounting portion  117  and the see-through window gasket  135 , thereby preventing fluid from leaking from the body  10 . If necessary, an additional gasket may be further provided along the outer mounting portion  115 . As the additional gasket further seals a gap between the outer mounting portion  115  and the see-through window  13 , no gap occurs between the outer body  11  and the see-through window  13 . 
     Hereinafter, the heating module  50  will be described with reference to the accompanying drawings. 
       FIG. 23  is a cross-sectional view showing a state in which the body is seated on a base which is one component of the electric kettle of  FIG. 1 . As shown in  FIG. 23 , the heating module  50  may be mounted below the body  10 . The heating module  50  may cover the open lower surface of the body  10  and forms the bottom surface of the heating space  101  provided in the body  10 . The heating module  50  may form the appearance of the lower surface of the body  10  in a state in which the heating module  50  is mounted. 
     The heating module  50  may include heating plate  52  forming the bottom surface of the heating space  101 , plate packing  51  that seals a gap between the heating module  50  and the inner body  12  around the heating plate  52 , heater  54  that heats the heating plate  52 , and upper power module  55  that supplies power to the heater  54 . The heating module  50  may further include a bottom cover  56  that covers the remaining components except for a portion of the upper power module  55  so as not to be exposed to the lower side of the body  10 . 
     As the heating module  50  and the bottom cover  56  are mounted through the open lower surface of the body  10  and form at least a portion of the lower portion of the body  10 , the heating module  50  and the bottom cover  56  may also be referred to as a “bottom body”. The body  10  may be seated on the base  60  in a state in which the bottom body is completely assembled. That is, in order to operate the electric kettle  1 , the body  10  in which the bottom body is assembled must be seated on the base  60 . 
     In a state in which the body  10  is seated on the base  60 , the upper power module  55  of the body  10  and the lower power module  64  of the base  60  are in contact with each other, thereby enabling power to be supplied. In this state, the heater  54  may be heated by the supply of power to boil fluid, such as water. 
       FIG. 24  is an exploded perspective view showing a state in which the bottom cover of the electric kettle of  FIG. 1  is separated, when viewed from below.  FIG. 25  is an exploded perspective view showing a connecting structure of the body and a heating module which is one component of the electric kettle of  FIG. 1 .  FIG. 26  is an exploded perspective view of the heating module according to an embodiment. 
     As shown, the heating module  50  may be disposed inside of the open lower surface of the body  10 . When the heating module  50  is separate from the bottom cover  56 , the remaining components may be exposed through the open lower surface of the body  10 . 
     The upper power module  55  may be disposed at a center of the open lower surface of the body  10 , and the heater  54  may be provided outside of the upper power module  55  to heat the heating plate  52 . The bottom cover  56  may be provided with a cover PCB  563  that supplies power to the heater  54 . 
     The upper power module  55  may be disposed at a center of the heating module  50 . The upper power module  55  may be mounted at a center of the heater base  53 . The heater base  53  may be connected to a lower surface of the heating plate  52 , and the heater  54  may be mounted on the heater base  53 . 
     The heater  54  may be a sheath heater. The heater  54  may be disposed at a more outer side than the upper power module  55  and disposed along a circumference of the heating plate  52 . Both ends of the heater  54  may be spaced apart from each other at adjacent positions, and a connection terminal  763   c  may be exposed at both ends of the heater spaced apart from each other and may be connected to the cover PCB  563  by an electric wire. 
     The heater  54  may be mounted on the heater base  53 . The heater base  53  may be formed in a disk shape having a size corresponding to a size of the lower surface of the heating plate  52 , and the heater  54  may be mounted on the heater base  53 . The heater base  53  may be made of aluminum or an aluminum alloy material having high thermal conductivity, for example, such that heat of the heater  54  may be uniformly transferred to an entire plate portion  521  of the heating plate  52 . The heater base  53  and the heater  54  may be integrally formed by die casting, for example. 
     A cover coupling hole  532  to mount the bottom cover  56  may be formed in the heater base  53 , and a screw that passes through the bottom cover  56  may be coupled to the cover coupling hole  532  of the heater base  53 . A temperature sensor mounting hole  531  in which the temperature sensor  57  may be mounted may be further formed in the heater base  53 . 
     The heater base  53  may be mounted on the lower surface of the heating plate  52 . In this case, the heater base  53  may be in close contact with the lower surface of the heating plate  52 , and may be blazing-processed, for example, to be integrally connected to the heating plate  52  so as to effectively transfer heat. 
     The heating plate  52  may form the bottom surface of the heating space  101 , and at a same time, the heating module  50  may be fixedly mounted on the inside of the body  10 . The heating plate  52  may be made of a same stainless steel material as the inner body  12  and may be inserted and mounted into the open lower portion of the inner body  12  in a state of being connected to the heater base  53 . 
     The heating plate  52  may be fixedly mounted on one or a first side of the lower portion of the inner body  12  and may form a space in which the heater base  53 , the heater  54 , and the upper power module  55  may be disposed. The heating plate  52  may include plate portion  521  forming the bottom surface of the heating space  101  inside of the inner body  12 , a plate rim  522  on which the plate packing  51  may be mounted around the plate portion  521 , and a support  524 . 
     The plate portion  521  may be formed in a circular shape and may have a diameter slightly smaller than the inner diameter of the inner body  12 . Upper and lower surfaces of the plate portion  521  may have a planar structure, and the heater base  53  may be mounted on the lower surface of the plate portion  521 . A size of the plate portion  521  may be equal to a size of the heater base  53 . Therefore, when the heater base  53  generates heat, the heater base  53  may heat the entire plate portion  521 , such that the entire bottom surface of the inside of the heating space  101  is heated. 
     A through hole  521   a  may be formed at one or a first side of the plate portion  521 . The through hole  521   a  may be opened at a position corresponding to the temperature sensor mounting hole  531 , and the temperature sensor  57  may be fixedly mounted in the through hole  521   a . In this case, a sensor packing  571  may be provided around the temperature sensor  57 , and the sensor packing  571  may be mounted in the through hole  521   a  to seal the through hole  521   a . The temperature sensor  57  is exposed above the plate portion  521  to sense the temperature of fluid contained in the heating space  101 . 
     Plate rim  522  may be formed along a circumference of the plate portion  521 . The plate rim  522  may be vertically bent downward from the circumference of the plate portion  521 . A height of the plate rim  522  may correspond to a vertical height of the plate packing  51 , and a bent portion  523  bent outward may be formed at a lower end of the plate rim  522  to allow the plate packing  51  to be seated on the plate rim  522 . 
     The plate packing  51  may be mounted on the plate rim  522  and may be formed along the circumference of the plate portion  521 . The plate packing  51  may seal a gap between the inner body  12  and the plate portion  521 . The plate packing  51  may be inserted into the inner body  12  in a state of being mounted on the plate rim  522  and may be coupled to the packing mounting portion  127  of the inner body  12 . Therefore, the heating plate  52  may be fixed to the inside of the inner body  12  by the plate packing  51 , and at the same time, fluid may be prevented from leaking between the heating plate  52  and the inner body  12 . 
     The plate packing  51  may have packing groove  511  recessed in a shape corresponding to the packing mounting portion  127 . The packing groove  511  may be formed along an outer surface of the plate packing  51 , and the packing mounting portion  127  may be inserted into the packing groove  511  to fix the plate packing  51  and the heating plate  52  connected to the plate packing  51 . 
     A sealing portion  512  may be further formed above the packing groove  511 . The sealing portion  512  may be formed over the upper end of the plate packing  51  at the upper end of the packing groove  511 . The sealing portion  512  may be configured such that a plurality of protrusions or ribs protrude along the circumference of the plate packing  51 , and may be in contact with the inner surface of the inner body  12 . The sealing portion  512  may seal a gap between the inner body  12  and the plate packing. The sealing portion  512  may protrude more outward than the packing groove  511  to form a stepped portion and may have a structure seated on the upper end of the packing mounting portion  127 . 
     The bent portion  523  at the lower end of the plate rim  522  may be formed in a shape slightly stepped from the plate rim  522  and may maintain a state in which the plate packing  51  is seated. A plurality of supports  524  may be formed at the lower end of the plate rim  522 . The plurality of supports  524  may be arranged at regular intervals and may be arranged along the circumference of the plate rim  522 . 
     The support  524  may extend downward. The support  524  may be formed to be slanted outward as the support  524  extends downward. Each of the supports  524  may be formed in a plate shape, and thus, may be elastically deformed when a force is applied toward a center of the heating plate  52 . 
     An extended end of the support  524  may extend to be supported to the lower end of the plate mounting portion  126 . A lower end of the support  524  may extend to be slanted more toward the outer side than the outer diameter of the inner lower end portion  125 . Therefore, in a process of inserting the heating plate  52 , the support  524  may be pressed in contact with the inner surface of the inner lower end portion  125  while passing through the inner lower end portion  125  and may be elastically deformed toward the inner side. 
     When the heating plate  52  and the plate packing  51  are inserted up to the plate rim  522 , the support  524  is restored in an outward direction while passing through the inner lower end portion  125 , as shown in  FIG. 23 , and the lower end of the support  524  is caught and restrained by a lower edge of the plate mounting portion  126  at the inside of the plate mounting portion  126 . Therefore, the heating plate  52  may maintain the mounted state and may maintain a firmly connected state without moving downward to be arbitrarily separated or generating a gap. 
     The remaining heating module  50  except for the bottom cover  56  may be completely accommodated inside of the body  10 . When the bottom cover  56  is mounted, the remaining components of the heating module  50  provided inside of the body  10  are covered and the appearance of the lower surface of the body  10  may be formed. 
     A cover hole  560   c  may be formed at a center of the bottom cover  56 , and portion of the upper power module  55  may be exposed through the cover hole  560   c . The bottom cover  56  may be provided with a cover plate  562  to open and close a portion of the bottom cover  56 . 
       FIG. 27  is a perspective view of the bottom cover according to an embodiment.  FIG. 28  is an exploded perspective view of the bottom cover of  FIG. 27 , when viewed from above.  FIG. 29  is an exploded perspective view of the bottom cover of  FIG. 27 , when viewed from below. 
     As shown in  FIGS. 28 to 29 , the bottom cover  56  may be injection-molded of a plastic material, for example, and may be connected to the lower end of the body  10  to cover the open lower surface of the body  10  and at a same time form the appearance of the lower surface of the body  10 . The bottom cover  56  may include a cover bottom surface  560  and a cover rim  561  bent along a circumference of the cover bottom surface  560 . The cover bottom surface  560  may include a cover slant portion  560   a  in the center of the cover bottom surface  560 , and a cover flat portion  560   b  outside of the cover slant portion  560   a . The cover slant portion  560   a  may have a slant which decreases from the center toward the outside, and the cover flat portion  560   b  formed up to the cover rim  561  in parallel to the ground may be formed at an outer end of the cover slant portion  560   a.    
     A cover hole  560   c  may be formed at the center of the cover bottom surface  560 , that is, at a center of the cover slant portion  560   a , and the upper power module  55  may be exposed through the upper module hole  560   c . Therefore, when the body  10  is mounted on the base  60 , the body  10  may be in contact with the lower power module  64 . 
     The bottom cover  56  may cover all components of the heating module  50  except for the upper power module  55 . A plurality of screw holes  568 , to which screws may be coupled, may be formed along a circumference of the upper module hole  560   c . The screw hole  568  may be formed at a position corresponding to the coupling hole  532  of the heater base  53 . Therefore, the screw may pass through the screw hole  568  and be coupled to the coupling hole  532 , such that the bottom cover  56  may be firmly fixed to the body  10 . 
     The cover rim  561  may be formed around the bottom surface  560  of the bottom cover  56 . The cover rim  561  may extend upward along the circumference of the bottom cover  56  and may cover the inner lower end portion  125  from the outside. Therefore, when the bottom cover  56  is connected, the cover rim  561  may cover the inner lower end portion  125  from the outside. In this case, an inner surface of the cover rim  561  and the outer surface of the inner lower end portion  125  may be in close contact with each other such that the bottom cover  56  may maintain a stable and firm connected state. 
     A plurality of bottom ribs  569  that extends radially around the upper module hole  560   c  may be formed inside of the bottom cover  56 . The plurality of bottom ribs  569  may serve as a partition wall to reinforce a strength of the bottom cover  56  and block fluid from flowing into the cover PCB  563  when fluid leakage occurs. 
     An electric wire groove  569   a  may be recessed in the bottom ribs  569  such that the electric wires may be guided through the bottom ribs  569  to the cover PCB  563 . In addition, a plurality of electric wire fixing portions  566 , which is formed in a ring shape so as to fix the electric wires, may be formed between the plurality of bottom ribs  569 . 
     A central portion of the bottom cover  56 , in which the upper power module  55  may be positioned, may be formed to be slightly high. The cover slant portion  560   a  may be formed to have a slant which decreases toward the outside, thereby preventing fluid from flowing into the upper power module  55  in the case of a fluid leakage situation. 
     A cover drain hole  567  may be formed in the cover flat portion  560   b  of the bottom cover  56 . The cover drain hole  567  may be positioned outside of the bottom cover  56  having a relatively low height and may pass through the cover bottom surface  560  of the bottom cover  56 . Therefore, fluid introduced into the bottom cover  56  may flow outward along the cover slant portion  560   a  and be discharged downward through the cover drain hole  567 , thereby preventing the fluid from accumulating inside of the bottom cover  56 . Therefore, the upper power module  55  and the cover PCB  563  provided in the bottom cover  56  may be protected from leakage. 
     The bottom cover  56  may be provided with a PCB accommodating portion  564 . The PCB accommodating portion  564  may form a space in which the cover PCB  563  may be accommodated and may be formed in a shape in which a lower surface and both extended ends are open. The PCB accommodating portion  564  may be disposed over a half region of the bottom cover  56 . 
     That is, the PCB accommodating portion  564  may be positioned on one side of both sides with respect to the center of the bottom cover  56  and may be positioned below the heater  54 . A space in which the electric wires connected to the cover PCB  563 , the upper power module  55 , and the heater  54  are disposed may be provided at one side of the bottom cover  56  opposite to a position at which the PCB accommodating portion  564  is formed. The cover drain hole  567 , the bottom rib  569 , and the electric wire fixing portion  566  may also be disposed at a position opposite to the position of the PCB accommodating portion  564 . 
     The PCB accommodating portion  564  may be formed along an accommodating portion opening  564   a  of the bottom of the bottom cover  56  and may be formed along the circumference of the bottom cover  56 . The PCB accommodating portion  564  may have a predetermined height so as to accommodate the cover PCB  563 . 
     Both ends of the PCB accommodating portion  564  may be open toward the inner side of the bottom cover  56 . A terminal  563   c , to which the electric wire may be connected, may be provided at an end of the cover PCB  563  exposed through the opening. 
     The PCB accommodating portion  564  may include a side surface portion  564   c  that extends vertically along an inner edge and an outer edge of the accommodating portion opening  564   a , and an upper surface portion  564   d  connecting both ends of the side surface portion  564   c . As a mica sheet  565  may be mounted on the upper surface portion  564   d , the upper surface portion  564   d  may be referred to as a “sheet mounting portion  564   d”.    
     The mica sheet  565  may be formed to have a size and a shape corresponding to those of the cover PCB  563  and be disposed on the upper surface of the sheet mounting portion  564   d . Therefore, the cover PCB  563  may be thermally and electrically insulated such that the cover PCB  563  is protected from abnormal operations. 
     Sheet fixing portions  564   b  may be formed in the sheet mounting portion  564   d  so as to fix the mica sheet  565 . The sheet fixing portions  564   b  may be formed at both ends of the sheet mounting portion  564   d , and an additional sheet fixing portion  564   b  may be further formed between the sheet fixing portions  564   b  on both sides. The sheet fixing portions  564   b  may restrain an end of the mica sheet  565  such that the mica sheet  565  maintains a state of being mounted on the sheet mounting portion  564   d.    
     The cover PCB  563  may be provided inside of the PCB accommodating portion  564  and may have a shape corresponding to the accommodating portion opening  564   a . The cover PCB  563  may be mounted on the cover plate  562  that covers the accommodating portion opening  564   a.    
     The cover PCB  563  may be connected to the heater  54  and the upper power module  55  and may be configured to supply power to the heater  54 . The cover PCB  563  may be connected to the handle PCB  43  provided in the handle cover  32  such that operation of the heater  54  is controlled by operation of the operation portion  323 . 
     The cover PCB  563  may be provided with a buzzer  563   b . When it is necessary to notify operation of the electric kettle  1 , the buzzer  563   b  may notify a state by outputting a beep sound. For example, when a power is supplied by mounting the assembled body  10  on the base  60 , the buzzer  563   b  may output a notification sound to allow the user to recognize that the electric kettle is ready to operate, without checking the display. Instead of the buzzer  563   b , a speaker may be provided. The buzzer  563   b  may be referred to as a “sound output device”. 
     A PCB hole  563   a  may penetrate through the cover PCB  563 . The PCB hole  563   a  may be formed to have a size corresponding to that of a fixing boss  562   a  protruding from the cover plate  562 . Therefore, when the cover PCB  563  is mounted on the cover plate  562 , the fixing boss  562   a  may pass through the PCB hole  563   a . The cover PCB  563  may maintain a state of being fixedly mounted on the cover plate  562  and may be detached together with the cover plate  562  when the cover plate  562  is detached. 
     The cover plate  562  may be formed in a shape corresponding to that of the accommodating portion opening  564   a  and may cover the accommodating portion opening  564   a . The cover plate  562  may be provided with a pair of fixing ends  562   b  and the fixing boss  562   a  so as to be fixedly mounted on the bottom cover  56  in a mounted state. 
     The fixing boss  562   a  is formed at a center of the cover plate  562  and protrudes upward. A screw, which passes through the fixing boss  562   a , may be coupled to a coupling portion  561   b  protruding downward from an inside of the PCB accommodating portion  564  to fix the cover plate  562 . The fixing ends  562   b  may protrude from both ends of the cover plate  562  and may be inserted, caught, and restrained by both ends of the accommodating portion opening  564   a  when the cover plate  562  is mounted. The fixing ends  562   b  may protrude upward and forward from the end of the cover plate  562  to be caught and restrained by both sides of the accommodating portion opening  564   a.    
     A plurality of support ribs  562   c  may protrude from the cover plate  562 . The support ribs  562   c  may connect an inner end and an outer end of the cover plate  562 , and a plurality of support ribs  562   c  may be radially arranged. Therefore, the cover PCB  563  may be supported from below when the cover PCB  563  is mounted, and the cover PCB  563  may maintain a stable mounted state. 
     In order to use the electric kettle  1  in a state in which the bottom cover  56  is mounted on the body  10 , the electric kettle  1  may be seated on the base  60 . When the body  10  is seated on the base  60 , the upper power module  55  and the lower power module  64  may be in contact with each other and may be in a state in which power may be supplied to the heating module  50 . 
     Hereinafter, structure of the base  60  will be described with reference to the accompanying drawings. 
       FIG. 30  is a perspective view of a base which is one component of the electric kettle of  FIG. 1 , when viewed from above.  FIG. 31  is a perspective view of the base which is one component of the electric kettle of  FIG. 1 , when viewed from below.  FIG. 32  is a perspective view showing a state in which a base cover of the base is removed according to an embodiment.  FIG. 33  is a cross-sectional view showing a mounted state of the heating module and the base according to an embodiment. 
     As shown in  FIGS. 30 to 33 , the base  60  may be formed in a shape corresponding to a cross-sectional shape of the body  10  and may be configured to allow the body  10  to be seated on an upper surface of the base  60 . Power may be supplied to the body  10  in a state in which the body  10  is seated on the base  60 , and the outer surface of the body  10  and the outer surface of the base  60  may be coplanar, thereby providing a sense of unity. 
     An overall appearance of the base  60  may be formed by base cover  61  forming the upper surface, base body  62  forming the lower surface, and side plate  63  forming a circumferential surface between the base body  62  and the base cover  61 . 
     The base cover  61  may have a diameter corresponding to that of the body  10  and may be formed to allow the lower surface of the body  10  to be seated. The base cover  61  may include a base upper surface  611  forming the upper surface of the base  60 , and a base cover rim  612  that protrudes upward along a circumference of the base upper surface  611 . 
     The base upper surface  611  is a portion on which the bottom cover  56  may be seated when the body  10  is mounted on the base  60 , and may be formed in a shape corresponding to that of the bottom surface of the bottom cover  56 . That is, a lower module hole  611   c , through which the lower power module  64  may pass, may be formed at a center of the base upper surface  611 . The lower power module  64  may protrude upward through the lower module hole  611   c.    
     The base upper surface  611  may include an upper slant portion  611   a  and an upper flat portion  611   b . The upper slant portion  611   a  may be slanted from the lower module hole  611   c  toward the outside. The upper flat portion  611   b  may be formed to be horizontal to the ground from the upper slant portion  611   a  to the base cover rim  612 . Therefore, the base upper surface  611  may be formed in a shape in which a central portion from which the lower power module  64  protrudes slightly protrudes, and thus, even when fluid leakage occurs in the body  10 , fluid does not flow into the lower power module  64  but flows toward the upper flat portion  611   b.    
     An upper drain hole  613  may be formed in the upper flat portion  611   b . The upper drain hole  613  is a passage for draining fluid flowing down to the base  60  under the base  60  and may be open at an outer end of the upper flat portion  611   b . A plurality of upper drain holes  613  may be formed in a direction facing each other. In addition, a hole guide  613   a  that extends downward may be formed around the upper drain hole  613 . The hole guide  613   a  may extend to a position adjacent to a bottom surface of the base body  62  and may guide fluid to be discharged to lower drain hole  624  described below. 
     The base cover rim  612  may be formed at a height equal to or slightly higher than that of the bottom cover  56 . The base cover rim  612  may support the outer lower end portion  113  when the body  10  is mounted. 
     The base body  62  may include a base bottom surface  621  formed in a disk shape having a size corresponding to that of the base cover  61 , and a base rim  622  bent upward along a circumference of the base bottom surface  621 . A center of the base body  62  may protrude upward, and a power module mounting portion  623  on which the lower power module  64  may be mounted may be formed at the protruded central portion. The lower power module  64  may be disposed at a position corresponding to the upper power module  55  and may protrude upward through the lower module hole  611   c . Therefore, when the body  10  is seated on the base  60 , the upper power module  55  and the lower power module  64  may be in contact with each other to thereby be capable of supplying power. 
     A plurality of base coupling bosses  625  may be formed outside of the power module mounting portion  623 . The plurality of base coupling bosses  625  may be spaced apart from the power module mounting portion  623 . The base coupling boss  625  may protrude upward and may extend through the base PCB  65  inside of the base body  62 . Screws may be coupled to the base coupling bosses  625 , and the screws may be coupled to the base cover  61  by passing through the base coupling bosses  625 . Therefore, the base body  62  and the base cover  61  may be firmly connected to each other by the screws. 
     The base PCB  65  may be mounted along a space between the power module mounting portion  623  and the base rim  622  and may be formed in a corresponding shape. The base PCB  65  may be connected to the lower power module  64  and a power connector  66  described hereinafter and may be configured to control operation and power supply of the lower power module  64 . 
     A lower drain hole  624  may be formed in the base bottom surface  621  adjacent to the base rim  622 . The lower drain hole  624  may be formed at a position corresponding to the upper drain hole  613 . A partition wall  624   a  that extends upward may be formed in a circumference of the lower drain hole  624 . The lower drain hole  624  may be a passage through which the fluid flowing down through the upper drain hole  613  and the hole guide  613   a  may be discharged to the outside of the base  60  and may pass through the base bottom surface  621 . The partition wall  624   a  forms a space partitioned such that fluid flowing toward the lower drain hole  624  does not overflow to the outside, and a lower end of the hole guide  613   a  is accommodated inside of the partition wall  624   a . The partition wall  624   a  may be formed to be higher than a lower end of the hole guide  613   a  and may be connected to the base rim  622 . A plurality of lower drain holes  624  and a plurality of partition walls  624   a  may be formed spaced apart from each other. 
     In addition, a base hook  628  may be formed at one or a first side of the base rim  622 . The base hook  628  may be formed by cutting out a portion of the base rim  622  and may extend upward. An end of the base hook  628  may be caught and coupled to a base connecting portion of the base cover  61 . The base body  62  and the base cover  61  may maintain a connected state by connection of the base hook  628  and the base connecting portion  614 . A plurality of base hooks  628  may be formed along the base rim  622 , and thus, a circumferential surface of the base  60  may maintain a firm connected state. 
     A connector mounting portion  627 , to which the power connector  66  may be connected, may be formed at one or a first side of the base body  62 . The power connector  66  may be a portion connected to an end of a power cable including a plug connected to an outlet and may be formed such that the power cable is detachable. The power connector  66  may be exposed to the side of the base  60  and may be mounted on the connector mounting portion  627 . 
     The connector mounting portion  627  may be opened to allow the power connector  66  to be inserted thereinto, and the portion opened through the opening of the side plate  63  may be exposed to the outside. The open end of the connector mounting portion  627  may protrude more than an end of the power connector  66  and may be formed in a shape protruding from the side plate  63 . Therefore, when fluid overflows or flows down to the base  60 , the fluid may be blocked from flowing into the side plate  63 . 
     The side plate  63  connects the base body  62  to the base cover  61  and may form a side circumference of the base  60 . The side plate  63  may be made of a same metal material as that of the body  10 , and the side plate  63  and the body  10  may have a sense of unity in a state in which the body  10  is mounted on the base  60 . 
     Upper and lower ends of the side plate  63  may be bent, and the ends of the base body  62  and the base cover  61  may be supported. A side opening  631 , which is cut to expose the connector mounting portion  627 , may be formed in the side plate  63 . 
     Hereinafter, operation of the electric kettle having the above-mentioned structure according to an embodiment will be described. 
       FIG. 34  is a block diagram showing a signal flow for operation of the electric kettle according to an embodiment. Referring to  FIG. 34 , in order to use the electric kettle  1 , the user may connect the power supply by inserting the power cable connected to the base  60  into the outlet. In this state, fluid may be filled in the heating space  101  inside of the body  10 , and the body  10  may be placed on the base  60 . 
     When the body  10  is seated on the base  60 , the upper power module  55  and the lower power module  64  are in contact with each other and are in a state in which power may be supplied from the base  60  to the body  10 . The buzzer  563   b  may output a notification sound when the body  10  is seated on the base  60 , and the notification sound of the buzzer  563   b  makes it possible for the user to recognize that the body  10  is normally seated on the base  60  and is in an operable state. 
     Next, the user may start heating of the heater  54  by operating the operation portion  323  of the handle  40 . At this time, the user may check a set temperature through the display  322 , and may operate the operation portion  323  to start heating a fluid, such as water contained in the heating space  101 . 
     Two operation portions  323  may be disposed on the upper surface of the handle cover  32 . When one operation portion  323  is pressed, the touch sensor  430   a  below the operation portion  323  recognizes the pressing and sets a temperature for heating. The display  322  may display the set temperature through the on/off of the LED  432   b  set according to the operation of the operation portion  323 . 
     The user may press the other operation portion  323  among the two operation portions  323  while checking the set target temperature on the display  322 . According to the pressing operation of the operation portion  323 , the touch sensor  430   a  may recognize the pressing and control operation of the heater  54  through the operation PCB  433 . The setting of the temperature and the instruction of the operation may be possible through one operation portion  323 . If necessary, two or more operation portions  323  may be provided. 
     The electric kettle  1  may be connected to the communication unit  45  from a remote place to instruct the operation and the setting of the temperature. Therefore, even when the user does not directly operate the electric kettle  1 , the electric kettle  1  may be operated according to a signal input through the communication unit  45 . 
     The operation of the heater  54  may be started according to the operation of the operation portion  323 , and the fluid contained in the heating space  101  may be heated by the heat of the heater  54 . When the temperature sensor  57  senses that the fluid inside of the heating space  101  reaches the set temperature, the heater  54  stops operating and the electric kettle  1  completes the operation. 
     When the operation of the electric kettle  1  is completed, the buzzer  563   b  may output a beep sound notifying the completion of the operation. The user may hold the handle  40  and lift the body  10  to separate the base  60 , and may tilt the electric kettle  1  to pour the heated fluid through the spout  311 . 
     The electric kettle  1  may reduce or block heat conduction by the double structure of the body  10  in a state in which the heating of the fluid is completed. Therefore, even when the user comes into contact with the outer surface of the body  10 , the safety of the user may be secured because the outer surface of the body  10  is not excessively hot. Even when the heater  54  is not in operation, the temperature of the heated fluid may be maintained for a long time. 
     Various embodiments other than the above-described embodiment are possible. Hereinafter, an electric kettle according to another embodiment will be described with reference to the accompanying drawings. 
     This embodiment differs from the above-described embodiment in terms of a structure of the handle. Therefore, other structures except for the structure of the handle are the same as those in the above-described embodiment, and detailed description thereof has been omitted and the same or like reference numerals will be used. It is noted that components not shown are also the same as those in the above-described embodiment. 
       FIG. 35  is an exploded perspective view of a handle according to another embodiment. As shown in  FIG. 35 , the handle  40 ′ according to another embodiment may include handle frame  46  mounted on handle cover  32 ; handle deco  42  mounted on the handle frame  46 ; handle gasket  437  that seals the handle cover  32  and the handle frame  46 ; and handle PCB  43  provided inside of the handle cover  32 . 
     The handle frame  46  may include an upper portion  462  forming the upper portion of the handle frame  46  and a lower portion  461  extending downward from one end of the upper portion  462 . The upper portion  462  may be formed in a plate shape and may cover the open lower surface of the handle cover  32 . That is, the upper portion  462  may be formed in a shape corresponding to an opening of the handle cover  32 . The upper portion  462  may be connected to the open lower end of the handle cover  32  and may be formed such that the outer surface and the front end of the body top  31  are in contact with each other. 
     The lower portion  461  may extend downward from the end of the upper portion  462  and may be formed to have a cylindrical or elliptical cross-sectional structure such that the user may wrap the lower portion  461  with his or her hand. A hollow portion  461   a  may be formed inside of the lower portion  461 , and the communication unit  45  may be accommodated inside of the hollow portion  461   a.    
     Handle deco  42  may be mounted on the lower portion  461 . The handle deco  42  may be made of a same metal material as that of the body  10 , the upper body  30 , and the handle cover  32 . 
     PCB mounting portions  462   a  that extend upward may be formed at both sides of the upper portion  462 . The PCB mounting portion  462   a  allows the handle PCB  43  to be fixedly mounted, and may be provided with a mounting hole  462   c  into which the cover boss  327  may be inserted. The mounting hole  462   c  may pass through the PCB mounting portion  462   a  in the vertical direction and may be open to the lower surface of the upper portion  462 . Therefore, the handle frame  46  may be connected to the handle cover  32  by a screw  463  coupled at the lower side of the upper part  462 . 
     A gasket protrusion  462   b , on which the handle gasket  437  may be fixedly mounted, may be formed at a circumferential side of the upper portion  462 . The gasket protrusion  462   b  may be connected to the gasket groove  437   b  of the handle gasket  437 , and the handle gasket  437  may be fixed to the upper surface of the upper portion  462 . 
     The handle gasket  437  may be disposed along a circumference of the upper portion  462  and be configured to seal a space between the upper portion  462  and the handle cover  32 . The handle gasket  437  may have an open center and may be formed along the lower end of the handle cover  32  and the circumference of the upper portion  462 . Mounting holes  321 , into which the PCB mounting portion  462   a  may be inserted, may be open at both sides of the handle gasket  437 . When the handle gasket  437  is mounted on the upper portion  462 , the PCB mounting portion  462   a  may pass through the mounting holes  321 . A plurality of gasket grooves  437   b  may be formed along the circumference of the handle gasket  437  and connected to the gasket protrusions  462   b  of the upper portion  462 . 
     The handle PCB  43  may be provided inside of the space formed by the handle cover  32  and the upper portion  462 . The handle PCB  43  may include a touch PCB  430 , a display PCB  436 , and an operation PCB  432 . 
     The touch PCB  430  may be in close contact with the upper surface of the handle cover  32 , and the touch sensor  430   a  may be provided at a position corresponding to the operation portion  323 . Touch booster  431  may be disposed on the upper surface of the touch PCB  430  such that a pressing operation of the operation portion  323  may be more effectively transmitted. 
     The display PCB  436  may be provided in front of the touch PCB  430  and above the operation PCB  433 . A plurality of LEDs  436   b  may be disposed on the display PCB  436 . The plurality of LEDs  436   b  may be disposed at positions corresponding to holes  321  of handle cover upper surface  325 . 
     Light guide  436   a  and light cover  436   c  may be provided above the display PCB  436 . The light guide  436   a  may be mounted on the display PCB  436 , and a plurality of openings may be formed at positions corresponding to the LEDs  436   b . Therefore, light emitted from the LEDs  436   b  may be directed toward the holes  321  of the handle cover upper surface  325 . 
     The light cover  436   c  may be made of a light-transmitting material, and if necessary, may be made as a material capable of diffusing and dispersing light, such that light emitted from the LEDs  436   b  may shine more brightly. The light cover  436   c  may cover the opening of the light guide  436   a  and seal a gap between the light guide  436   a  and the upper surface of the handle cover  32 . 
     The operation PCB  433  may be provided below the touch PCB  430  and the display PCB  436 . Touch PCB grooves  430   a  and operation PCB grooves  432   a  may be formed at both lateral sides of the touch PCB  430  and the operation PCB  433 , respectively. The touch PCB grooves  430   a  and the operation PCB grooves  432   a  may have shapes corresponding to the PCB mounting portion  462   a , respectively, and may be formed such that the PCB mounting portion  462   a  may be inserted. Therefore, the touch PCB  430  and the operation PCB  433  may maintain a state of being fixedly mounted by the PCB mounting portion  462   a  inside of the handle cover  32 . 
       FIG. 36  is an exploded perspective view of a handle according to further another embodiment. As shown in  FIG. 36 , the handle  40 ″ according to this embodiment may include handle frame  472 ; handle deco  42  mounted on the handle frame  472 ; connecting member  471  that connects the handle frame  472  and the handle cover  32 ; handle gasket  437  that seals the connecting member  471  and the handle frame  472 ; and handle PCB  438  provided inside of the handle cover  32 . 
     The handle frame  472  may include an upper portion  472   b  forming an upper portion of the handle frame  472  and a lower portion  472   c  that extends downward from one end of the upper portion  472   b . The upper portion  472   b  may be formed in a plate shape and may cover the open lower surface of the handle cover  32 . That is, the upper portion  472   b  may be formed in a shape corresponding to an opening of the handle cover  32 . The upper portion  472   b  may be connected to the connecting member  471  and may be formed such that the outer surface and the front end of the body top  31  are in contact with each other. 
     The lower portion  472   c  may extend downward from the end of the upper portion  472   b  and may be formed to have a cylindrical or elliptical cross-sectional structure such that the user may wrap the lower portion  461  with his or her hand. A hollow portion  472   a  may be formed inside of the lower portion  472   c , and the communication unit  45  may be accommodated in the hollow portion  472   a.    
     Handle deco  42  may be mounted on the lower portion  472   c . The handle deco  42  may be made of a same metal material as that of the body  10 , the upper body  30 , and the handle cover  32 . 
     The connecting member  471  may be provided on the upper surface of the upper portion  472   b . The connecting member  471  may be formed in a shape corresponding to a shape of a side of the handle cover  32  and may be formed such that the upper surface and the lower surface thereof are open. 
     The upper end of the connecting member  471  is in contact with the handle cover upper surface  325 , and the lower end of the connecting member  471  is in contact with the circumference of the upper portion  472   b . The front end of the connecting member  471  is in contact with the outer surface of the body top  31 . Therefore, the connecting member  471  may be in close contact with the handle  40 ″ inside of the handle cover  32  and may be firmly supported to the body top  31  at the same time. 
     The PCB mounting portions  471   a  extending in the vertical direction may be formed at both sides of the connecting member  471 . The PCB mounting portion  471   a  allows the handle PCB  438  to be fixedly mounted, and may be provided with a mounting hole  471   b  into which the cover boss  327  is inserted. The mounting hole  471   b  may be formed to pass through the PCB mounting portion  471   a  in the vertical direction, and the handle frame  472  may be connected to the handle cover  32  by a screw  471   c  coupled at the lower side. 
     The handle gasket  437  may be provided along the circumference of the lower end of the connecting member  471 . The handle gasket  437  may be disposed along the lower end of the connecting member  471  and the circumference of the upper portion  472   b  and may be configured to seal a space between the connecting member  471  and the upper part  472   b . The handle gasket  437  may have an open center and may be formed along circumferences of the connecting member  471  and the upper portion  472 . Mounting holes  437   a , into which the PCB mounting portion  471   a  may be inserted, may be open at both sides of the handle gasket  437 . When the handle gasket  437  is mounted on the connecting member  471 , the PCB mounting portion  471   a  may pass through the mounting holes  437   a . A plurality of gasket grooves  437   b  may be formed along the circumference of the handle gasket  437  and connected to the gasket protrusions (not shown) formed in the connecting member  471  or the upper portion  472   b.    
     The handle PCB  438  may be provided inside of the space formed by the handle cover  32 , the connecting member  471 , and the upper portion  472   b . The handle PCB  438  may be in close contact with the handle cover upper surface  325 , and the touch sensor  430   a  may be provided at a position corresponding to the operation portion  323 . The touch booster  431  may be disposed on the upper surface of the handle PCB  438  such that the pressing operation of the operation portion  323  is more effectively transmitted. 
     The plurality of LEDs  438   c  may be disposed along the front end of the handle PCB  438 . The plurality of LEDs  438   c  may be disposed at positions corresponding to the holes  321  of the handle cover upper surface  325 . 
     Light guide  438   d  may be provided at the upper portion of the handle PCB  438 . The light guide  438   d  may be mounted on the upper surface of the handle PCB  438  corresponding to the LEDs  438   c , and a plurality of openings may be formed at positions corresponding to the LEDs  438   c . Therefore, light emitted from the LEDs  438   c  may be directed toward the holes  321  of the handle cover upper surface  325 . 
     The handle PCB  438  may be connected to the communication unit  45  and the heating module  50  and may control operation of the heater  54 . Therefore, as the handle PCB  438  includes a single PCB that controls the overall operation of the electric kettle  1 , the handle PCB  438  may be referred to as a “main PCB  438 ”. 
     The electric kettle according to embodiments has at least the following advantages. 
     In the electric kettle according to embodiments disclosed herein, the electric wires connecting the heating module and the main PCB inside of the handle may pass between the double walls of the body having the double wall structure. Therefore, it is unnecessary to add a separate structure for the arrangement of the electric wires, thereby improving productivity and assembly workability. In particular, as the electric wires are arranged using the heat insulation space provided between the outer body and the inner body made of the metal material, it is possible to prevent damage to the electric wires while completing the heat insulation structure and to arrange the electric wires at a shortest distance, thereby further improving assemblability. 
     A remarkably improved appearance may be expected by not exposing any configuration for the arrangement of the electric wires inside or outside of the body. As all configurations for controlling and manipulating the operation of the heating module are provided in the handle, the heating module may be made compact in size. Therefore, it is possible to minimize the space of the body required for mounting the heating module. In this manner, the electric kettle may be compact while maintaining a capacity to contain fluid, such as water. 
     The handle may protrude from one side of the body, and the operation portion for controlling the operation of the heating module and the display for displaying the temperature of the heated fluid may be provided on the protruding portion of the handle. Therefore, the fluid may be heated to a predetermined temperature by the user&#39;s one-handed operation, thereby facilitating temperature control and improving user convenience. 
     The handle has a structure in which only the upper end thereof is connected to the body and the electric wire may be guided to the heating module through the body. As the lower end of the handle does not need to be connected to the lower end of the body in order to be connected to the heating module disposed below the body, the handle may be configured in a form in which the lower end is spaced apart from the body, such that the user may easily hold or use the handle, thereby improving user convenience. 
     Embodiments disclosed herein provide an electric kettle having improved assemblability and productivity. Further, embodiments disclosed herein provide an electric kettle having an improved arrangement structure of electric wires. Furthermore, embodiments disclosed herein provide an electric kettle having a compact structure. Also, embodiments disclosed herein provide an electric kettle having an improved appearance. Finally, embodiments disclosed herein provide an electric kettle capable of improving ease of use. 
     Embodiments disclosed herein provide an electric kettle that may include a body having a double wall structure; a heating module configured to heat fluid, such as water inside of the body; a handle that protrudes from an outer surface of the body; and a main printed circuit board (PCB) provided in the handle to control operation of the heating module. An electric wire that connects the main PCB and the heating module may be guided along a space between the double walls. 
     The body may include an outer body and an inner body made of a stainless material. An electric wire outlet that communicates with the handle may be formed in the outer body, and an electric wire inlet that communicates with a space in which the heating module is disposed may be formed in the inner body. 
     Embodiments disclosed herein provide an electric kettle that may include a body configured to form a space in which fluid, such as water may be contained; a handle that protrudes from an outer surface of the body; a heating module provided inside of the body to heat fluid inside of the body; an operation portion provided in the handle to operate so as to control an operation of the heating module; and a main printed circuit board (PCB) provided inside of the handle to control the operation of the heating module according to an operation of the operation portion. The body may be formed in a double wall structure of double walls spaced apart from each other, and an electric wire that connects the main PCB and the heating module may be guided from the handle to the heating module through a space between the double walls of the body. 
     The body may be made of a stainless material and may be formed in a cylindrical shape having an open upper surface and an open lower surface. The body may include an outer body configured to form the outer surface of the body; and an inner body provided inside of the outer body to form a space in which fluid is contained. The outer body and the inner body may be spaced apart from each other to form a heat insulation space. 
     An upper end and a lower end of the outer body and the inner body may be joined to each other. Openings, which allow the electric wire to enter and exit, may be formed in the outer body and the inner body. 
     A mounting portion, on which the heating module may be mounted, may be recessed inside of the inner body. The heating module may be inserted into an open lower surface of the inner body, and a circumferential surface of the heating module may be inserted into the mounting portion and fixedly mounted to partition a space inside of the inner body in a vertical direction. 
     An electric wire outlet that communicates with the handle may be formed in the outer body, and an electric wire inlet that communicates with a space partitioned by the heating module may be formed in the inner body. The electric wire outlet and the electric wire inlet may be disposed on a same extension line. A display configured to display a temperature of fluid inside of the body may be provided in the handle. 
     Embodiments disclosed herein provide an electric kettle that may include a body made of a metal material and forming a heat insulation space by connection of an outer body and an inner body inside of the outer body; an upper body connected to an upper end of the body and extending upward along a circumference of the body; a heating module provided inside of the inner body to heat fluid, such as water inside of the body; a handle connected to an outer surface of the upper body; an operation portion provided in the handle to operate so as to control an operation of the heating module; a main printed circuit board (PCB) provided inside of the handle to control the operation of the heating module according to an operation of the operation portion; an electric wire outlet open in the outer body such that the heat insulation space and the handle communicate with each other; and an electric wire inlet open in the inner body such that the heat insulation space and a space in which the heating module is disposed communicate with each other. An electric wire that connects the main PCB to the heating module may sequentially pass through the electric wire outlet, the heat insulation space, and the electric wire inlet. The electric wire outlet and the electric wire inlet may be disposed on a same extension line. 
     A light-emitting member may be provided inside of the handle. A plurality of holes, through which light emitted from the light-emitting member may be transmitted, may be formed on an upper surface of the handle. A display configured to display a heating temperature inside the body may be formed by the plurality of holes. 
     An upper end of the handle may be connected to the upper body, and a lower end of the handle may be spaced apart from an outer surface of the body. The upper body may include a spout made of a same metal material as a material of the body and protruding from a position facing the handle to pour fluid, such as water. 
     The electric wire outlet may be formed at a position facing the spout and accommodated in an open front surface of the handle to communicate with an inside of the handle. The electric wire outlet may be formed at the upper end of the body, and a body top opening recessed at a position corresponding to the electric wire outlet may be formed at a lower end of the upper body. The electric wire outlet may be defined by an inner cutout portion cut out at an upper end of the inner body, an outer cutout portion cut out at an upper end of the outer body, and a body top opening opened at a lower end of the upper body. 
     A plurality of handle PCBs may be provided inside of the handle. The plurality of handle PCBs may be arranged inside of the handle in a vertical direction. 
     A handle cover having an open front surface and an open lower surface to accommodate an upper end of the handle may be provided on the outer surface of the upper body. The handle cover and the upper body may be made of a same material. 
     The handle PCB may include a touch PCB which is in contact with an upper surface of the handle cover and on which a touch sensor may be mounted; a display PCB disposed below the touch PCB and including a light emitting diode (LED) configured to emit light for displaying information on the handle cover; and an operation PCB provided below the display PCB to control the operation of the heating module. 
     The details of one or more embodiments are set forth in the accompanying drawings and the description. Other features will be apparent from the description and drawings, and from the claims. 
     Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art. 
     It will be understood that when an element or layer is referred to as being “on” another element or layer, the element or layer can be directly on another element or layer or intervening elements or layers. In contrast, when an element is referred to as being “directly on” another element or layer, there are no intervening elements or layers present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. 
     It will be understood that, although the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Thus, a first element, component, region, layer or section could be termed a second element, component, region, layer or section without departing from the teachings of the present invention. 
     Spatially relative terms, such as “lower”, “upper” and the like, may be used herein for ease of description to describe the relationship of one element or feature to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “lower” relative to other elements or features would then be oriented “upper” relative to the other elements or features. Thus, the exemplary term “lower” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     Embodiments of the disclosure are described herein with reference to cross-section illustrations that are schematic illustrations of idealized embodiments (and intermediate structures) of the disclosure. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the disclosure should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. 
     Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
     Any reference in this specification to “one embodiment,” “an embodiment,” “example embodiment,” etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments. 
     Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.