Abstract:
The present invention relates to a cooking appliance used for boiling or cooking food, or more particularly, to a cooking pot, which can rapidly heat water or food, and thereafter can suppress overflowing of water or food therein, while simultaneously maintaining its suitable temperature and pressure, thereby shortening its cooking time while enhancing its safety and convenience during cooking. For this purpose, the cooking pot according to the present invention has a body, into which water or food is placed, and a lid, which covers or uncovers the top opening of said body, wherein said lid comprises an auxiliary heating means at the backside thereof, protruding toward inside of said body, the rim of the backside of which protrudes toward in the direction, to which lid is fitted into said body; a side portion of said lid, having a discharging means of steam, which can be adjusted to discharge steam according to an increase in steam pressure inside said cooking pot; and a knob at the upper side of said lid, having a power connection means, connecting or disconnecting to an outside power supply means, which is electrically connected to said auxiliary heating means.

Description:
TECHNICAL FIELD 
   The present invention relates to a cooking appliance for boiling or parboiling food and, more particularly, to a cook pot used for cooking noodles including instant noodles, and for parboiling vegetables. 
   BACKGROUND OF THE INVENTION 
   Conventionally, a coffee pot for making coffee and an oriental herb medicine pot for extracting herb extract have electric heating means built in the bottom. On the other hand, most of boiling pots employ as their heat source external heat source such as a gas range. 
   But, as in a process of cook by the gas range by using conventional pot, when food having a lot of water or broth in them reaches the boiling point, the water or broth often overflows with steam while lifting a lid. If left alone, the flame of the gas range is putted out by the overflowing water and broth, and in worse case, have to supply water and newly add the flavoring according to the additional water in the case of food. 
   On the other side, in order to the prevent the overflowing it is often left open, without the lid on, even while cooking, or the lid has to be opened now and then, and sometimes the strength of the fire for cook pot has to be correctly adjusted. 
   But, cooking without a lid, that has disadvantage in the thermal efficiency side, lifting a lid often while cooking troublesome and will cause loss of heat, so more cooking time is required and difficulty in a rational control of the state of cooking. 
   On the other hand, it is quite troublesome to control the strength of fire directly and difficult to adjust time and extent in correctly. 
   SUMMARY OF THE INVENTION 
   Accordingly, the present invention has been made in an effort to solve the problems occurring in the related art, and an object of the present invention is to provide a cook pot which can maximally shorten time required in heating water or cooking food. 
   Another object of the present invention is to provide a cook pot which can prevent overflowing of the water having great thermal energy even after reaching a boiling point, and can properly keep a steam temperature and a steam pressure, and thereby helping save on energy, secure safety, and add to convenience in cooking. 
   In order to achieve the above objectives, the cook pot according to the present invention, consisting of a pot body which is filled with water or food, and a lid to opening or shutting the opened upper part of the pot body is characterized in than on the inside of the said lid an supplement heating means is placed projecting deep in the pot body, on the other side of the lid and form a side section which projected to connecting direction with said pot body at the border of the outside of the lid, and having a steam deflation means which can control steam deflation according to steam pressure in the cook pot and equipped the power supply connection section which connect and disconnect to an electric external power supply means at the handle installed on the upper surface of said lid. 
   Therefore, the cook pot of the present invention, as double heating by the external heating source such as the gas range with a supplement heating means which formed in the cook pot, so the water and foods in the cook pot was more contact with the heat source and heated much faster. And the other, by forming the steam deflation means which can control the steam deflation according to the steam pressure which at the side of the lid which can restrain the overflow of stream deflation and keep the temperature and pressure inside of the cook pot. 
   Also, the cook pot according to the present invention is characterized as follows: consisting of a lid for opening and shutting the opened upper part of the pot body, from the side section which projected to connecting direction with above pot body at the border of the outside of the cover, and having a steam deflation means which can control the steam deflation according to the steam pressure in the cook pot. 
   Therefore, the cook pot of the present invention, as double heating by the external heat source such as the gas range with a supplement heating means formed in the cook pot, so water and food in the cook pot are more contact with the heat source and heated rapidly. And by forming the steam deflation means which can control the steam deflation according to the steam pressure at the side of the lid, which can restrain overflowing of stream deflation and maintain the temperature and pressure in the cook pot. 
   Also, the cook pot according to the present invention, having a pot body which is filled with water or food and a lid for opening and shutting the opened upper part of the pot body, form a supplement heating means which projected to direction of connecting with the said pot body at the border of the other side of the lid, and form the side section having a steam deflation means can control steam deflation according to the steam pressure in the cook pot and form a handle which have pipe-shaped and the supplement heating means which inserted said handle and connected to a group of the external electric wire cable. 
   Therefore, the cook pot of the present invention, has a built in generating heat coil which heats water and food in the cook pot due to more contact with the heat source leading to more rapid heating. 
   And by forming the steam deflation means, which can control the steam deflation according to the steam pressure at the side section of the lid, can restrain the overflowing stream deflation and maintain the temperature and pressure in the cook pot. 

   
     BRIEF DESCRIPTION OF DRAWINGS 
       FIG. 1  is an exploded perspective view illustrating a boiling pot having an electric heating means in accordance with a first embodiment of the present invention; 
       FIG. 2  is a cross-sectional view taken along the line I—I, of  FIG. 1 , illustrating an assembled state of the boiling pot; 
       FIGS. 3 and 4  are partial enlarged cross-sectional views illustrating a power supply section which is in power supply and power shutoff positions, respectively, 
       FIG. 5  is a cross-sectional view illustrating an in-use status of the boiling pot of  FIG. 1 ; 
       FIG. 6  is a schematic cross-sectional view illustrating a boiling pot having an electric heating means in accordance with a second embodiment of the present invention; and 
       FIG. 7  is a schematic cross-sectional view illustrating a boiling pot having an electric heating means in accordance with a third embodiment of the present invention. 
   

   DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
   Below, the present invention is explained in detail of the present invention by preferable examples to the attached drawings; 
   EXAMPLE 1 
     FIG. 1  is an exploded perspective view illustrating a boiling pot having an electric heating means in accordance with a first embodiment of the present invention; and  FIG. 2  is a cross-sectional view taken along the line I—I of  FIG. 1 , illustrating an assembled state of the boiling pot,  FIGS. 3 and 4  is partial enlarged cross-sectional views illustrating a power supply section which is in power supply and power shutoff positions, respectively, and  FIG. 5  is a cross-sectional view illustrating an in-use status of the boiling pot. 
   The cook pot A of the example is comprised of, as shown in  FIGS. 1 and 2 , a pot body  10 , a lid  20  built in upper part of said pot body  10  and a handle  22  formed on the upper face of the lid  20 . The supplement heating means  30  is formed inside the lid  20  to protrude to opposite the pot body  10  on the other side of the lid  20 , and forms the steam deflation means which can control steam deflation according to the steam pressure in the cook pot on the side which is connected with the body of the lid, and equips the power supply connection means  40  connected to the above mentioned generating heating coil as electrically connected and can connect external power supply means  50 . 
   In here, the supplement heating means  30  is formed as protrude to opposite direction of the pot body  10  on the lid  20 , and coil section  34  having a truncated cone-shaped contour on the protruded a pair of terminals. And also, form the heating panel  32  at the out side of the coil section  34  which lid the coil section, it is for prevent of the contact with the water and food. 
   The said coil section  34  of the supplement heating means  30  is formed at opposite of the pot body on the other side of the lid. And more particularly, there is a the flange each of the pipe-shaped means was formed on, and stick a flange on the other side of the lid and another flange on the generating heat plate  32  of the heating means  30  which formed on one step by using conventional combine means such as welding or bolts. 
   And also, the coil section  34  of the said supplement heating means  30  is electrically connected with the power connection means  40  formed on the upper end of the handle  22 . 
   The area of the border of the said lid  20 , the cylindrical side wall  24  is formed which combine with the inside of the pot body  10  to around circumference, and the steam deflation means of the cylindrical side section  24  is formed. In here, it is sufficient to any shape of the steam deflation means has an appearance which is able to emit properly. In this example, a slit is formed as along the direction of the length (perpendicular to the direction of the circumference) at said cylindrical side  24 , an opening of the slit which emit the steam to outside more and more according to steam pressure is higher and higher, and the other side, if decreased the steam pressure, the area of the opening is decreased by its own weight. 
   The said power connection means  40  as shown in  FIGS. 3 and 4 , which comprises a socket  41  and a pressing section  47  formed on the upper end of the handle  22 , on the said socket  41  formed of a body part  42  connected with the lower part of the handle  22  and an opened holder section  43  which has a smaller outer diameter than that of the body part  42  at the upper end of said body part  42  and can insert a plug  52  of the power supply means  50 . In here the appearance of the said socket  41  is either cylindrical or square, but in this example a cylindrical-shaped has been adopted for the sake of convenience of the explanation. 
   Due to the diameter of the said holder section  43  is smaller than that of said body part  42 , and so step difference is occurred at the connection area of the holder section  43  and the said body part  42  and formed the press section  47  can move up and down and which insert at the outside of the said holder section  43  and body part  42 . And moreover, there is formed a connection terminal which electrically connected with coil section  34  of the heating means  30  in the said holder  43 , and the said connection terminal connect with the connection terminal of a plug  52 . 
   The press section  47 , which comprises the lower part which has larger diameter than outer diameter of the body  42  of the socket  41  and upper part which has larger diameter than the diameter of the holder section  43 . Through holes are formed on wall of the said socket  41  and holder section  43  in the opposite direction each other, each of the through holes has a steel ball  45  inserted in it When a plug  52  inserted to the socket  41 , said steel ball is inserted to an engagement groove  53  which formed at the plug  52 , and have a role of maintain connection between the plug  52  and the socket  41  as stable. 
   Further, inside face of the upper part of the said press section  47 , that is, at the inside joining with the holder part  43 , grooves  48  having arc-shaped which having a similar size of said steel ball  45  is formed facing each other. Said arc-shaped groove  48  as explain below, which is providing for the spare where the rigid body ball can retreat when connecting and disconnecting the plug  52  to the holder part  43 , and either inserted or extracted the steel ball  45  not projected from the inside of the holder part  43 . 
   Meanwhile, the engagement groove  53  having same size of the steel ball  45  is formed at the outer surface of the plug  52 , said engagement groove  53  which accord with the through hole  44  of the holder section  43  is formed when plug  52  totally inserted the holder section  43 . 
   when the plug  52  is inserted into the holder section  43  of the socket  41 , and the steel ball  45  into the engagement groove  53 , it combines the plug  52  and the socket  41  is stabilized. 
   And, as explained above, there occurs the step difference at the connection area of the body section  42  of the socket  41  between the holder part  43 , the step difference opposites with the step difference of the connection area of the lower part and upper part of said pressing section  47 . By open the spring  49  in the step part which is formed on the said pressing section  47  and socket  41 , the pressing section is supported elastically along the direction of the length. 
   Moreover, because the holder section  43  of said sockets  41  are opened to the upside, it is easy to inflow impurities such as steam and dirt when disconnect the plug  52 . Therefore, it is preferable to form a cover which can shut off the opened face, said cover is positioned at where can not disturb when inserting or removing, that is, stick by the conventional hinge device of the outer circumference of the press section  47 . 
   Now, explain about the operation of the said power supply connection element  40  by using the  FIGS. 3 and 4 . First of all, in  FIG. 3  shows the connection state of the plug  52  into the socket  41 , the steel ball  45  is pressed to inside by the press section  47 , and the part of the steel ball  48  is inserted to the engagement groove  53  of the plug  52 . In this case, said steel ball played a role of catching function by the steel ball  45  inserting to the engagement groove  53  to catch on, can maintain stability combination state both of the plug  52  and the socket  41 . 
   And next, the  FIG. 4  shows connection or disconnection of the said plug  52  to the socket. First, when the plug  52  is connected to the socket  47 , if the steel ball  45  is positioned at the groove  48  of the press section  41 , the steel ball  45  could retreat to said groove  48 . Therefore, the plug  52  inserted to the holder part  43  of the socket  41  without disturb of the rigid body ball  45 . When the plug  52  to the holder section  43  is connected entirely, and releases the press section  47 . At this time, said press section  47  is returned to the original position, and the plug  52  and the socket is to be as  FIG. 3  can maintains stability of the connection state. 
   While, the operation of pulling out said plug  52  from said holder  43  to the socket  41  is compare with the above connection, it has a only difference of the inserting separating operation and the other are equal, the detail description is omitted. 
   Thereafter, the body  42  of said socket  41  which are able to form a plurality of drain holes  46  which connected with the opened bottom of the holder section  43  by the through inside, and said drain hole  46  is for the discharge of water which inside of the said holder section  43  by the condensation of the steam occurred in cooking. In this time, said socket  41  and plug  52  are insulated by conventionally method. 
   And then, said pressing section  47  is maintained at said socket  41  by the maintaining means (not illustrated). In other words, said pressing section  47  is maintained on the socket  41  with as much power which can endure elastic strength of a spring  49 . Said maintaining means can be, for instance, a stopper having protrusion-shaped which protrude to a direction of radius or rib and grooves-shaped which are formed on each of the lower inside of said pressing section  47  and outside of the socket  41 , however the detail description and drawing are omitted. 
   Next, explain the power supply means  50  according to the present example. Said power supply means  50  which is for supply the external power to the supplement heating means  30 , and which comprises the electric cable  51  is connected an end up to the power supply (not illustrated), and the plug  52  which connected the other end up to the said electrical cable  51 . 
   The electrical cable  51  is preferably as freely extendible for compare with the formed position of the cook pot A. For this purpose, a keeping unit  54  which having box-shaped is formed which can keep and withdraw the electrical cable  51 , and fixed on the wall by the supporter bar  55  which is formed at the one side of the keeping unit  54  (the opposite direction of the direction of withdraw electrical cable  51 ) and the winding section  56  is formed which can put in as elastically electrical cable inside of the keeping unit  54   
   Further, the withdraw hole is formed on the side of said keeping unit  54 , said withdraw hole can pass the electrical cable  51  and not pass the plug  52  which formed on the step section. Therefore, when no cooking, put the electrical cable  51  in the said keeping unit  54  and when cooking, pull the said plug  52  and easily withdraw as wanted length of the electrical cable  51 . 
   Meanwhile, as in this embodiment example, said supplement heating means  30  is turned on/off and the temperature is controlled by the temperature control device (not illustrated). 
   Below, explain the process of the using the cook pot of the example 1 with  FIG. 5  according to the present invention. 
   First, put on a heating means like a gas range a cook pot with its pot body  10  filled with water or food and withdraw said plug  52  and insert it in the socket  41  formed at upper end of the handle  22 . 
   Next, turn on the heating means and if the power switch of the temperature control element (not illustrated) is turned on, water or food in the cook pot is heated quickly by the external heating means (ex. Gas range) and supplement heating element  30  in the cook pot A, that is heating plate  32  having coil section  34 . 
   Once water or food start boiling, by turn off the power switch or stop or decrease of heat supply from the supplement-heating element  30  by control temperature, can save energy and prevent over heating water or food. 
   On the other hand, if steam is excessively generated to lift said lid  20 , as the steam discharge slots  26  are increasingly opened in proportion to an increase in steam pressure, excessive steam is discharged to the outside through the steam discharge slots  26 . Consequently, overflowing of water and/or food item is prevented. Thereafter, as a pressure falls, the cover  20  is automatically lowered by its own weight close the slit on the side of the pot body  12 . In this way, it is possible to maintain a constant steam pressure and a constant temperature and thereby cook the food item within a short period of time. 
   If cooking of the food item is completed in this manner, as the user presses the press section  52 , separating the plug  52  from the holder section  43 , in this time, the plug  52  and electrical cable  51  quickly put in the putting part  54  by the elastic power of the winding section. 
   EXAMPLE 2 
   A second embodiment according to the present invention, as shown in  FIG. 6 , in the cook pot comprising the pot body  110 , the lid  120  inserted in the pot body  110  and the handle formed on the upper face of said lid  120 , form the side which projected to connected direction with above pot body  110  at the border of the other side of the lid, install the handle  122  which having pipe shape for inserting the supplement heating means  150  from the external. 
   In the cook pot A in the first preferred embodiment of the present invention, the supplement heating means  30  fixed on the lid  20  and the external power supply means  50  is separated and connected to the power supply connecting means formed on the upper end of the handle. There are differences in the second embodiment such as the power supply means  50  can insert and separate through the hole which is formed on the handle  122  and connect to the supplement heating means  150  directly without opening the power supply connecting means in external power supply means. 
   While, though not illustrated in detail in the  FIG. 6 , the connecting means  140  which connect the supplement heating means  150  is able to form on the upper end of the handle  122 , herein, the holder part  143  in the connecting part  140 , the steel ball  145  installed on the through hole which formed on the wall of the holder part  143 , pressing section  147  which inserted the holder section  143 , groove formed on the inside of the pressing section  147  and engagement groove formed on the outside of the supplement heating means  150  and having same composition of the first experiments, so detailed description of these compositions are omitted. 
   As shown in the  FIG. 6 , the cook pot A in the present example, said handle  122  is formed projecting upper face on the lid  120 , and said handle  122  is formed in the pipe-shaped, in which said auxiliary heating means  150  can be inserted. 
   Also, on the upper end of the handle  122 , a connecting means  140  is formed to be connect with the said supplement heating means  150 , the composition of said connecting means  140  in the example 1 is same with those of the socket  41  and pressing section  47 . However, the only difference is in the first example, the plug  52  inserted to the inside of the holder section  43  of the socket  41 , and in the present example, a rod-shaped heating means via connecting means  140  to cook pot A. In other words, the engagement groove  53  has arc-shaped for insertion of said steel ball  45  is formed on the out side of the plug  52 , and engagement groove identical with those in Example 1 are formed on the outer surface of the rod-shaped supplement heating means  150  in Example 2. The other compositions or operation are same with the first experiment so detailed description is omitted. 
   In the present example, the one end part of the supplement heating means  150  connected with the electrical cable  151  and another end having stored in the coil  152  according the some range along the length of the rod-shaped supplement means  150 . Here, the said coil  152  electrically connected with the electrical cable  151 . 
   On the other side, the said handle  122  formed as a pipe-shaped, when the supplement heating means  150  is not insert the handle  122 , the lid  120  installed on the pot body  110  the cook pot A always vent with the outer air. This is a reason of water or food in the cook pot boiled lately with provides the reason of the inflow of dusts and impurities into the cook pot while cook pot A is not in use. Therefore, to solve these problems, it is preferable to provide the cover  149  which installed on the upper end of said handle and with can opening and shutting, here, said cover  149  connect with lid  120  or handle  122  by the string for prevent of loss. 
   Next, explain the method of the using of the cook pot A according to the second embodiment in the present invention. 
   First, the cook pot filled with water and food is on the heating means such as gas range and is heated. At this time, open the cover  149  which installed on the upper end of the handle  122  and with press the pressing section  147  of the connecting means  140  and insert the rod-shaped supplement heating means  150  to the handle  122 , after then prove the power to the supplement heating means  150  by turn on the switch of the temperature control means. 
   When water or food boiling in the cook pot A, the said supplement heating means  150  is removed or the opening of the upper end of the handle  122  is shut off by the cover or control the temperature of the supplement heating means  150  by the temperature control means, whereby cooking can be maintain the temperature and pressure in the cook pot A. 
   EXAMPLE 3 
   Next, explain the third embodiment according to the present invention, with  FIG. 7 . 
   As shown in the  FIG. 7 , the cook pot A in the third embodiment is characterized in, the side which is formed to be projected to the direction of the combination of the pot body  210  on the border of the outside of the lid  220  and having a steam deflation element which can control stream deflation according to the steam pressure in the cook pot, and with the heat generating coil  230 ,  232  is built at the bottom and side, and power supply means  240  which is connected with the external power supply means which electrically connected with the said heat generating coil  230 ,  232 . Further, the ordinary handle  222  is formed on the upside of the lid  220  of the cook pot A. 
   Said power supply connection means  240  having a socket  241  which is connected to the temperature control switch  242  and plug  252 , and electrically connected with the said heat generating coil  230 ,  232 . Herein, it is preferable to form the handle combine with the power supply connecting means  240  for the simple composition, in this case, each socket  241  and temperature control switch  242  is formed preferably on the end and side of said handle respectively. 
   Also, the steam deflation element in the present embodiment which comprises a slit  226  which formed on the side  224  of the cover  220  along the direction of the length, as same with said first and second embodiment. 
   So far the cook pot of the present invention has been described through specific embodiments, but should not be confined or limited to these examples. For it is obvious that persons who have ordinary knowledge in the field to which the present invention belongs can variously modify the present invention within the extent they do not depart from its technical ideas. The technical extent of the present invention includes not merely the constructions described in its patent claims but all the other constructions also, which have equable relationships with the present invention. 
   Industrial Applicability 
   According to the present invention, a time required to heat water from a normal temperature to boiling point can be significantly shortened, and energy consumption decreased 
   And also, according to the cook pot of the present invention, it is not necessary to frequently opening and shutting a lid, and steam is controlled by the steam deflation means which formed on the lid so, not only maintain the temperature and pressure of the water or food but also prevent the safety accident which occurred when frequent opening and shutting a lid while cooling.