Patent Publication Number: US-10321786-B2

Title: Blender

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of pending U.S. patent application Ser. No. 15/594,292, filed May 12, 2017, which claims priority from and the benefit of Korean Patent Application No. 10-2016-0153161, filed on Nov. 17, 2016, which is hereby incorporated by reference for all purposes as if fully set forth herein. 
    
    
     BACKGROUND 
     Technical Field 
     The present disclosure relates to a blender, and more particularly, to a vacuum blender in which noise generated when a food material is processed in a container of the blender may be decreased and convenience of the use is improved. 
     Description of the Related Art 
     Generally, a blender, which allows a food material such as a fruit, a vegetable, or the like, to be put in a container having a processing blade rotatably mounted in an inner side of a lower portion thereof to be subjected to processing procedures such as blending, pulverizing, and the like, by putting the food material into the container, covering the container with a cover, and then providing power of a driving device mounted outside the container to the processing blade, may rapidly prepare juice, soup, and the like, in busy modern society. Therefore, a demand for the blender has increased. 
     In addition, there is a trend to variously develop a vacuum blender exhausting air in the container so that the food material processed in the container of the blender as described above may be processed in a fresh state. Since the vacuum blender as described above may process the food material while maintaining an inner portion of the container in a decompression state (a low oxygen concentration), it may suppress browning, oxidation, destruction of nutrients, and the like, of the food material, and may also suppress a large amount of air bubbles from being generated in the processed food material to improve texture or visual representation of the processed food material. 
     An example of the vacuum blender according to the related art as described above is disclosed in Korean Patent No. 10-1618729, and will be briefly described with reference to  FIG. 1 . 
     As illustrated in  FIG. 1 , the vacuum blender  100  according to the related art includes a body  210  accommodating a motor  240  and a vacuum pump  230  therein and provided with a manipulating part  200  having manipulating buttons  220  disposed on a surface thereof; a vacuum pulverizing part  500  detachably seated on the body  210  and including a storing container  510  including a mixer blade  515  rotatably mounted on a bottom portion of an inner portion thereof; a support part  300  extended upwardly of the body  210  along a sidewall of the vacuum pulverizing part  500 ; and a vacuum decompressing part  400  rotatably connected to an upper end of the support part  300  and connected to an upper end of the storing container  510  so as to be in communication with the upper end of the storing container  510 . 
     However, in the vacuum blender  100  according to the related art as described above, the support part  300  is formed integrally with the body  210  so as to protrude upwardly, such that the vacuum blender  100  has a high height even in a state in which the storing container  510  is removed from the body  210  to occupy a large reception space. In addition, the support part  300  is formed along one side of the storing container  510 , such that the support part  300  becomes an obstacle when a user approaches the body  210  in order to remove or mount the storing container  510 , which causes inconvenience of the use. In addition, at any position, a case in which an inner portion of the storing container  510  may not be viewed due to the support part  300  hiding the storing container  510  occurs, such that it may be difficult to figure out a processed state of the food material. 
     In addition, the vacuum decompressing part  400  in which a first vacuum room  450  that may be in communication with an exhaust hole formed in a sealing cover  530  connected to an upper side of the storing container  510  is formed is rotatably connected to an upper portion of the support part  300 . However, since the vacuum decompressing part  400  configured as described above is supported from a lower side thereof or is connected to the storing container  510  by the sealing cover  530  disposed at the upper end of the storing container  510 , in the case in which the storing container  510  is not present, a support element is not present therebelow, such that the vacuum decompressing part  400  excessively rotates downwardly. Therefore, large stress is generated in a hinge part  310 , or the like, such that a fracture, or the like, may be generated. 
     In addition, when the storing container  510  is operably seated on the body  210 , driving force of the motor  240  in the body  210  is transferred to a rotation base  250 , a rotation plate  512  connected to the rotation base  250  by friction or ruggedness coupling, or the like, and a rotation shaft  514  rotated and supported by a lower packing  517  and a bearing  516 . Therefore, the mixer blade  515  connected to an end portion of the rotation shaft  514  may rotate in the storing container  510 . 
     However, since mechanical friction between components is significantly generated in a driving force transfer mechanism through which the driving force of the motor  240  is transferred to the mixer blade  515  in the storing container  510 , noise large enough to make a user or the surrounding persons inconvenient may be generated during an operation of the vacuum blender  100 . 
     In addition, when the mixer blade  515  in the storing container  510  pulverizes the food material, large noise is also generated due to friction and collision between the mixer blade  515  and the food material, and air of the first vacuum room  450  and a second vacuum room  580  is exhausted by an operation of the vacuum pump  230 , large noise is also generated due to friction, or the like, between the air passing through a second vacuum closure  540 , a connection nozzle  440 , and the like, and the second vacuum closure  540 , the connection nozzle  440 , and the like. 
     BRIEF SUMMARY 
     Therefore, embodiments of the present invention are suggested in order to solve the problems of the vacuum blender according to the related art as described above, and embodiments provide a blender in which a reception space occupied by a body of the blender may be decreased when the blender is not used, a container may be mounted on and detached from the body even at any place of a circumference of the body without being hindered, visibility of an inner portion of the container may be improved, and noise generated at the time of an operation may be decreased. 
     According to an aspect of the present invention, there is provided a blender including: a body including a motor providing driving force and a vacuum pump sucking air; a container detachably mounted on the body and including a processing member rotatably mounted at an inner portion of a lower side thereof and a container cover air-tightly mounted in an upper opening thereof; a first vacuum tube connected to the vacuum pump; and a soundproofing cover mounted on the body so as to cover the container, detachable from the body to be completely separated from the body, and having an internal space closed by closure of an opening of one end thereof by the body when the soundproofing cover is mounted on the body, wherein one end portion of the first vacuum tube is exposed to the internal space when the soundproofing cover is mounted on the body. 
     An exhaust hole allowing an inner portion of the container and the internal space of the soundproofing cover to be in communication with each other may be formed in the container or the container cover. 
     A check valve permitting air in the container to be exhausted and blocking external air from being introduced may be provided in the exhaust hole. 
     The blender may further include a second vacuum tube of which one end portion is connected to the one end portion of the first vacuum tube and the other end portion is disposed in the vicinity of the exhaust hole, when the soundproofing cover is mounted on the body. 
     The blender may further include a contact part provided at the other end portion of the second vacuum tube and contacting the exhaust hole so as to be closely adhered to the exhaust hole. 
     The blender may further include an adsorption member provided at the other end portion of the second vacuum tube and contacting the exhaust hole so as to be closely adhered to the exhaust hole. 
     The second vacuum tube may be coupled to the soundproofing cover, and be detachable together with the soundproofing cover from the body. 
     The second vacuum tube may be formed by a double wall of the soundproofing cover. 
     The one end portion of the first vacuum tube may be provided with an adsorption member. 
     A seating part may be formed to protrude on the body, the container may be mounted on the seating part, a position determining part protruding inwardly of the soundproofing cover may be provided at an inner side of a lower end of the soundproofing cover, the position determining part may have a first inclined surface inclined inwardly toward an upward direction, an edge of the seating part may have a second inclined surface corresponding to the first inclined surface, and the adsorption member may be disposed on the second inclined surface. 
     The number of one end portions of the second vacuum tube disposed at a lower end of the soundproofing cover may be plural. 
     The blender may further include a blocking part formed on the body so as to correspond to the one end portions of the second vacuum tube that are not connected to the one end portion of the first vacuum tube among the plurality of one end portions of the second vacuum tube and blocking external air from being sucked. 
     A seating part may be formed to protrude on the body, the container may be mounted on the seating part, and a position determining part protruding inwardly of the soundproofing cover may be provided at an inner side of a lower end of the soundproofing cover. 
     The position determining part may have a first inclined surface inclined inwardly toward an upward direction, and an edge of the seating part may have a second inclined surface corresponding to the first inclined surface. 
     The soundproofing cover may further include a knob disposed on a sidewall thereof, and the second vacuum tube may be disposed through the knob. 
     The contact part may vertically move. 
     An upper wall of the soundproofing cover may be opened or closed. 
     The container may include an auxiliary injection part, and an opening allowing the auxiliary injection part to be exposed to the outside may be formed in the soundproofing cover. 
     The container may include a discharging part permitting a content in the container to be discharged to the outside, and a cutout part may be formed in the soundproofing cover so that the discharging part protrudes outwardly of the soundproofing cover. 
     The blender may further include a compressing member disposed adjacently to a contact portion between the soundproofing cover and the body to maintain air-tightness between the soundproofing cover and the body and formed of an elastic material. 
     The blender may further include a release valve releasing a vacuum state of the internal space of the soundproofing cover. 
     According to another aspect of the present invention, there is provided a blender including: a body including a motor providing driving force and a vacuum pump sucking air; a container detachably mounted on the body and including a processing member rotatably mounted at an inner portion of a lower side thereof and a container cover air-tightly mounted in an upper opening thereof; a first vacuum tube connected to the vacuum pump; a soundproofing cover mounted on the body so as to cover the container, detachable from the body to be completely separated from the body, and having an internal space closed by closure of an opening of one end thereof by the body when the soundproofing cover is mounted on the body, one end portion of the first vacuum tube being exposed to the outside of the internal space of the soundproofing cover when the soundproofing cover is mounted on the body; and a second vacuum tube of which one end portion is connected to the one end portion of the first vacuum tube and the other end portion is disposed in the vicinity of an exhaust hole, when the soundproofing cover is mounted on the body. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a side cross-sectional view of a vacuum blender according to the related art. 
         FIG. 1A  is an enlarged detail view of a portion of the vacuum blender of  FIG. 1 . 
         FIG. 2  is a schematic side cross-sectional view illustrating a disassembled state of a vacuum blender according to an exemplary embodiment of the present invention. 
         FIG. 3  is a schematic side cross-sectional view illustrating an assembled state of the vacuum blender of  FIG. 2 . 
         FIG. 4  is a schematic side cross-sectional view illustrating a vacuum blender according to another exemplary embodiment of the present invention. 
         FIG. 5  is a partial side cross-sectional view illustrating a connection part in a disassembled state of a vacuum blender according to still another exemplary embodiment of the present invention. 
         FIG. 6  is a partial side cross-sectional view illustrating a connection part in a disassembled state of a vacuum blender according to yet still another exemplary embodiment of the present invention. 
         FIG. 7  is a schematic side cross-sectional view illustrating a movable contact part of a vacuum blender according to yet still another exemplary embodiment of the present invention. 
         FIG. 8  is a schematic side cross-sectional view illustrating a movable contact part of a vacuum blender according to yet still another exemplary embodiment of the present invention. 
         FIG. 9  is a schematic side cross-sectional view illustrating a vacuum blender according to yet still another exemplary embodiment of the present invention. 
         FIG. 10  is a schematic side cross-sectional view illustrating a blender according to yet still another exemplary embodiment of the present invention. 
         FIG. 11  is a schematic side view illustrating a blender according to yet still another exemplary embodiment of the present invention. 
         FIG. 12  is a schematic partial side cross-sectional view illustrating a blender according to yet still another exemplary embodiment of the present invention. 
         FIG. 13  is a schematic side cross-sectional view illustrating a blender according to yet still another exemplary embodiment of the present invention. 
         FIG. 14  is a partial side cross-sectional view illustrating the blender of  FIG. 13 . 
         FIG. 15  is a schematic side cross-sectional view illustrating a blender according to yet still another exemplary embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. Exemplary embodiments described herein are not to be interpreted as limiting the present invention, and are to be understood as only examples. 
     Referring to  FIGS. 2 and 3 , a schematic side cross-sectional view of a vacuum blender according to an exemplary embodiment of the present invention is illustrated. 
     The vacuum blender according to an exemplary embodiment of the present invention includes a body  10  in which a motor  11  providing driving force and a vacuum pump  30  that may suck air are accommodated; and a soundproofing cover  50  accommodating a container  20  therein and detachably connected to the body  10 . 
     The vacuum blender is described in the present exemplary embodiment. However, the present invention is not necessarily limited to being applied to the vacuum blender, but may also be applied to a general blender. In addition, the container  20  may be removably seated in the body  10 , and may include a processing member such as a mixer blade  23  rotatably disposed at a lower portion of an inner side thereof in order to process a food material. A container cover  21  may be air-tightly and detachably connected to an upper opening of the container  20 . In addition, a seating part  13  assisting the container  20  to be seated and having a driving force transfer mechanism disposed thereon in order to transfer the driving force of the motor  11  to the mixer blade  23  of the container  20  may be formed on the body  10 . 
     An operating part (not illustrated) is present in the body  10 . Therefore, a user may operate the vacuum blender as needed by manipulating buttons, and the like, of the operating part. An operation of the motor  11  or the vacuum pump  30  may be adjusted by the manipulation of the operating part by the user. 
     The motor  11  provides the driving force that may rotate the mixer blade  23  of the container, a shaft  12  of the motor  11  may be provided at an upper side of the body  10  and be connected to a rotation base (not illustrated) constituting the driving force transfer mechanism, and the rotation base may be provided at an outer side of a lower portion of the container  20  and be connected to a rotation plate (not illustrated) constituting the driving force transfer mechanism. The rotation plate is connected to a rotation shaft  22 , and the processing member such as the mixer blade  23  is connected to an end portion of the rotation shaft  22  of an inner side of the container  20 . 
     The vacuum pump  30 , which is to suck the air, may have a vacuum tube (a first vacuum tube (or channel))  35  extended from a suction port (not illustrated) thereof. The vacuum pump  30  may receive the driving force from the motor  11 , but may also include a separate driving device. One end portion  31  of the vacuum tube  35  connected to the suction port of the vacuum pump  30  may be disposed to be exposed to, for example, an upper surface of the body  10 . When a soundproofing cover  50  to be described below is mounted on the body  10 , one end portion  31  of the vacuum tube  35  exposed as described above may be connected to one end portion  32  of a vacuum tube (a second vacuum tube)  35  provided to be exposed to a lower end of the soundproofing cover  50 . Therefore, suction force of the vacuum pump  30  may be transferred to an exhaust hole  24  of the container cover  21  closely adhered to a contact part  33  through the vacuum tube  35  to suck air in the container  20 . The vacuum pump  30  is provided with an exhaust port (not illustrated) for exhausting the air sucked as described above. In addition, the exhaust hole is formed in the container cover of the container  20  in the present exemplary embodiment, but is not limited thereto. That is, the exhaust hole may also be formed in any one portion of the container  20  itself. 
     The vacuum pump  30  may be maintained in a vacuum state for a predetermined period after it is operated, but may also be configured so that a vacuum state is substantially released when an operation of the vacuum pump  30  ends. 
     The seating part  13  to which a lower portion of the container  20  is detachably connected may be formed on the body  10 . The rotation base connected to the shaft of the motor  11  may be provided on the seating part  13  so as to be exposed. 
     The container  20  may include the mixer blade  23  as the processing member rotatably mounted at the lower portion of the inner side thereof, and the mixer blade  23  may receive the driving force from the motor  11  as described above through the rotation shaft  22 . The container  20  may be formed of a transparent material such as tempered glass, such that an inner portion of the container  20  may be viewed by the user. 
     The upper opening of the container  20  is provided with the container cover  21  air-tightly and detachably connected to the upper opening of the container  20 . The exhaust hole  24  that may be in communication with a contact part  33  of a soundproofing cover  50  to be described below may be formed in the container cover  21 . A concave part  27  may be formed in the vicinity of the exhaust hole  24  to improve maintenance of air-tightness at the time of closely adhering the exhaust hole  24  to a contact part  33  to be described below. The exhaust hole  24  may be provided with a kind of check valve  29  only exhausting air and blocking air from being introduced into the container  20 . 
     The soundproofing cover  50  may be detachably mounted on the body  10  so as to cover the container  20  and the container cover  21  from an upper side of the container  20 . The soundproofing cover  50  may be formed in, for example, a cylindrical shape of which an upper end portion is closed. The vacuum tube (the second vacuum tube)  35  extended from the lower end of the soundproofing cover  50  to the contact part  33  may be disposed in a sidewall  54  of the soundproofing cover  50 . The vacuum tube  35  provided in the soundproofing cover  50  may be a separate tube, but may also be formed by a double wall by dualizing a portion of the sidewall  54  of the soundproofing cover  50 , that is, forming an inner wall  51 . 
     An upper wall  52  of the soundproofing cover  50  may be provided with the contact part  33  for being connected to the exhaust hole  24  of the container cover  21  when the soundproofing cover  50  is mounted on the body  10 . The other end portion of the second vacuum tube  35  may be opened to a lower side of the contact part  33 . The contact part  33  may be provided with a protrusion body  36  protruding on a lower side of the upper wall  52  and an adsorption member  34  disposed on a lower side of the protrusion body. The other end portion of the second vacuum tube  35  may be exposed to a central portion of the adsorption member  34 . 
     The adsorption member  34  for improving air-tightness of connection between the contact part  33  and the container cover  21  may also be provided on a lower surface of the contact part  33  (see  FIG. 3 ). In this case, the adsorption member  34  may cooperate with the concave part  27  formed in the vicinity of the exhaust hole  24  of the container cover  21  to further improve the air-tightness. 
     Meanwhile, one end portion of the vacuum pump  35  connected to the vacuum pump  30  may be exposed to the outside of the upper surface of the body  10  covered by the soundproofing cover  50 , that is, the outside of an internal space of the soundproofing cover  50 , when the soundproofing cover  50  is mounted on the body. In this case, the vacuum tube  35  disposed in the soundproofing cover  50  may also be a separate pipe member, or the like, provided on an outer surface of the soundproofing cover  50 . 
     As described above, when the soundproofing cover  50  is mounted on, for example, the body  10 , the suction force of the vacuum pump  30  is transferred to the contact part  33  through the vacuum tube  35  and is transferred from the contact part  33  into the container  20  through the exhaust hole  24  of the container cover  21 , such that the air in the container  20  may be exhausted. Therefore, a density of oxygen in the container  20  may be decreased to obtain effects such as suppression of a change in a color, suppression of oxidation, a decrease in destruction of nutrients, a decrease in generation of air bubbles, and the like, of a food material processed by the member processing the food material in the container  20 , such as the mixer blade  23 . In addition, in this case, the air exhausted from the container  20  may generate noise while passing through the valve  29 , and the like, but propagation of the noise to the outside may be suppressed by the soundproofing cover  50 . 
     In addition, when the soundproofing cover  50  is mounted on, for example, the body  10 , the soundproofing cover  50  also covers the seating part  13  provided on the body  10 . Therefore, mechanical noise generated in the driving force transfer mechanism for transferring the driving force of the motor  11  to the mixer blade  23  of the container  20  and noise generated due to collision between the mixer blade  23  and the food material, or the like, may be suppressed from being diffused to the outside, such that inconvenience of the user and the surrounding persons due to the noise may be decreased. 
     Alternatively, air of an internal space formed by the soundproofing cover  50  and the body  10  is configured to be exhausted by the vacuum pump  30  (for example, the adsorption member  34  of the contact part  33  is removed or as described below, the first vacuum tube (or channel) connected to the suction port of the vacuum pump  30  is in communication with the upper surface of the body  10  covered by the soundproofing cover  50  (see  FIG. 15 )), thereby making it possible to further improve a noise blocking effect. That is, since noise such as a mechanical friction sound is transferred using air as a medium, when a density of the air is lowered by exhausting the air in the soundproofing cover  50 , a noise transfer may be decreased. 
     In addition, since the soundproofing cover  50  may be easily completely removed from the body  10 , a process of mounting the container  20  on the body  10  or removing the container  20  from the body  10  may be performed even at any place of an entire circumference of the vacuum blender. In addition, in the case in which the vacuum blender is not used, the soundproofing cover  50  is completely removed, such that a space required for receiving the body  10  may be decreased. 
     In addition, when the soundproofing cover  50  is removed from the body  10 , a release valve (not illustrated) for releasing a vacuum state in the soundproofing cover  50  may be provided in, for example, the body. For example, the release valve may be disposed in the vacuum tube  35  between an inlet port of the vacuum pump  30  and one end portion  31  of the vacuum tube  35  to allow external air to be introduced into the soundproofing cover  50  at the time of releasing the vacuum state. 
     In addition, the soundproofing cover  50  may be formed of a material having transparency, similar to the container  20 . In this case, the user may observe the inner portion of the container  20  from an entire circumference of the container  20 , and convenience of the use may be improved. 
     Referring to  FIG. 4 , a schematic side cross-sectional view of a vacuum blender according to another exemplary embodiment of the present invention is illustrated. 
     The vacuum blender according to another exemplary embodiment of the present invention illustrated in  FIG. 4  is different from the vacuum blender according to an exemplary embodiment of the present invention illustrated in  FIGS. 2 and 3  in that the soundproofing cover  50  has a knob  55 . The knob  55  may be disposed on, for example, the sidewall  54  of the soundproofing cover  50 . For example, as illustrated in  FIG. 4 , the knob  55  may be disposed in parallel with a longitudinal direction of the sidewall  54 . 
     In addition, the vacuum tube  35  may be extended through the knob  55 . In this case, since the knob  55  has a relatively large thickness, the vacuum tube  35  may be easily buried in the knob  55 . The vacuum tube  35  may include a separate pipe member, but may also include a channel formed in the knob  55 . 
     Referring to  FIG. 5 , a schematic side cross-sectional view of a connection part through which a lower end of a soundproofing cover  50  and a body  10  of a vacuum blender according to still another exemplary embodiment of the present invention are connected to each other is illustrated. 
     The vacuum blender according to still another exemplary embodiment of the present invention illustrated in  FIG. 5  is different from the vacuum blender according to an exemplary embodiment of the present invention illustrated in  FIGS. 2 and 3  in that it includes a position determining part  53  that may prevent a position of the soundproofing cover  50  mounted on the body  10  from being changed in a lateral direction on the upper surface of the body  10 . That is, the position determining part  53  further protruding inwardly as compared with a width or an inner diameter of the soundproofing cover  50  to be closely adhered to the seating part  13  when the soundproofing cover  50  is mounted on the body  10  is formed at an inner side of a lower end of the soundproofing cover  50 . The position determining part  53  may be formed in, for example, an annular shape, but intermittently, the number of position determining parts  53  may be two or more or only one. 
     According to the configuration as described above, since the position determining part  53  may maintain the position of the soundproofing cover  50  on a plane, a connection state between one end portion  31  of the vacuum tube  35  connected to the vacuum pump  30  and one end portion  32  of the vacuum tube  35  provided in the soundproofing cover  50  and positioned at the lower end of the soundproofing cover  50  may be reliably maintained. 
     In addition, the vacuum blender according to still another exemplary embodiment of the present invention illustrated in  FIG. 5  may also include a plurality of end portions of the vacuum tube  35  disposed at the lower end of the soundproofing cover  50 . In this case, the plurality of one end portions of the vacuum tube  35  may be connected to the vacuum tube  35  and to each other through a connection pipe  135 . Therefore, since the user has only to connect any one of the plurality of one end portions of the vacuum tube  35  to one end portion  31  of the vacuum tube  35  of the body  10 , the soundproofing cover  50  may be more easily and rapidly mounted. In addition, the plurality of end portions of the vacuum tube  35  that are not connected may be closed by a blocking part  14  provided on the body  10 , but may also be used to exhaust the air in the soundproofing cover  50  without being closed. 
     Referring to  FIG. 6 , a schematic side cross-sectional view of a connection part through which a soundproofing cover and a body of a vacuum blender according to yet still another exemplary embodiment of the present invention are connected to each other is illustrated. 
     The vacuum blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 6  is different from the vacuum blender according to still another exemplary embodiment of the present invention illustrated in  FIG. 5  in that the position determining part  53  has a first inclined surface  153  inclined inwardly toward an upward direction and an edge of the seating part  13  has a second inclined surface  113  corresponding to the first inclined surface  153  of the position determining part  53 . 
     According to the configuration as described above, when the soundproofing cover  50  is mounted on the body  10 , since a width or a diameter of a lower side of the position determining part  53  is large and a width, but a diameter of an upper side of the seating part  13  is small, the seating part  13  may be easily inserted into the position determining part  53 , such that connection of the soundproofing cover  50  to the seating part  13  may be more easily conducted. 
     In addition, a protrusion part (not illustrated) and a groove (not illustrated) corresponding to the protrusion part are formed in the position determining part  53  and the seating part  13 , respectively, thereby making it possible to assist in alignment of the soundproofing cover  50  with the body  10  and maintenance of a state in which the soundproofing cover  50  is mounted on the body  10 . 
     Referring to  FIG. 7 , a schematic side cross-sectional view of an upper portion of a soundproofing cover according to yet still another exemplary embodiment of the present invention is illustrated. 
     The vacuum blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 7  is different from the vacuum blender according to an exemplary embodiment of the present invention illustrated in  FIGS. 2 and 3  in that a contact part  33   a  is mounted to be vertically movable. For example, a hole is formed in the upper wall  52  of the soundproofing cover  50 , and a contact body  136  may air-tightly vertically move in the hole. Therefore, a position of the contact body  136  is vertically adjusted depending on a height of the container  20 , thereby making it possible to air-tightly connect the contact part  33   a  to the exhaust hole  24  of the container cover  21 . Alternatively, air-tight connection may also be released, if necessary. 
     Alternatively, the contact body  136  may be configured to be fixed to a lower position when it is pushed downwardly once, and move upwardly to return to its initial position when it is pushed downwardly once more. 
     Referring to  FIG. 8 , a schematic side cross-sectional view of an upper portion of a soundproofing cover according to yet still another exemplary embodiment of the present invention is illustrated. 
     The vacuum blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 8  is different from the vacuum blender according to an exemplary embodiment of the present invention illustrated in  FIGS. 2 and 3  in that an upper wall  152  of the soundproofing cover  50  is formed of an opening or closing door. The opening or closing door  152  may be connected to an upper end of one side of the sidewall  54  of the soundproofing cover  50  through a hinge  56 . In addition, in order to maintain a closed state of the opening or closing door  152 , a hooking member  58  may be provided at the other end portion of the opening or closing door  152  opposite to the hinge  56 , and a protrusion  59  onto which the hooking member  58  may be hooked may be provided at an upper end of the sidewall  54 . 
     Referring to  FIG. 9 , a schematic side cross-sectional view of a blender according to yet still another exemplary embodiment of the present invention is illustrated. 
     The blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 9  is different from the vacuum blender according to an exemplary embodiment of the present invention illustrated in  FIGS. 2 and 3  in that it further includes an auxiliary injection part that may permit a food or a material to be injected into the container  20  even in a state in which the soundproofing cover  50  is mounted on the body  10 . 
     The auxiliary injection part  80  may include an extended part  82  extended upwardly from a hole  85  formed in the container cover  21  of the container  20 ; and an auxiliary lid  81  that may open or close an upper opening of the extended part  82 . The extended part  82  may be connected to the hole  85  of the container cover  21  through a packing  83  in order to maintain air-tightness. An upper end of the extended part  82  may be closely adhered to an opening  86  formed in the upper wall  52  of the soundproofing cover  50  (see A of  FIG. 9 ). In this case, an outer contact part  87  protruding outwardly may be formed on an outer surface of the extended part  82  in order to closely adhere and connect the extended part  82  and the upper wall  52  to each other. 
     Even though the soundproofing cover  50  is separated from the body  10 , the auxiliary lid  81  of the auxiliary injection part  80  may remain in a state in which it closes the extended part  82  (see B of  FIG. 9 ). The auxiliary lid  81  may include an insertion part  84  extended downwardly of the auxiliary lid  81  and closely adhered to an inner surface of the extended part  82  in order to air-tightly close the extended part  82 . In addition, a step part corresponding to the insertion part  84  may be formed on the inner surface of the extended part  82  to further improve air-tightness between the auxiliary lid  81  and the extended part  82 . 
     Meanwhile, the exhaust hole  24  may be disposed in the vicinity of the auxiliary injection part  80 , and a position of an adsorption member  34 , or the like, of a contact part  33   b  may be changed correspondingly. 
     Referring to  FIG. 10 , a schematic side cross-sectional view of a blender according to yet still another exemplary embodiment of the present invention is illustrated. 
     The blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 10  is different from the vacuum blender according to an exemplary embodiment of the present invention illustrated in  FIGS. 2 and 3  in that a discharging part  125  that may permit a food in the container  120  to be discharged to the outside is formed in the sidewall of the container  120 . 
     The discharging part  125  may be formed at a lower portion of the sidewall of the container  120 , and a valve  126  for opening or closing the discharging part  125  may be mounted at a free end portion of the discharging part  125 . 
     In addition, the discharging part  125  protrudes to have a length enough to be exposed to the outside of the soundproofing cover  50 . 
     A cutout part  154  (see A of  FIG. 10 ) may be formed at a lower portion of the soundproofing cover  50  so that the free end portion of the discharging part  125  may be exposed to the outside of the soundproofing cover  50  in a state in which the soundproofing cover  50  is mounted on the body  10 . For example, the cutout part  154  is formed upwardly from the lower end of the soundproofing cover  50  in a length direction, such that the discharging part  125  may be inserted into the cutout part  154  when the soundproofing cover  50  is mounted on the body  10 . 
     When the soundproofing cover  50  is completely mounted on the body  10 , an outer surface of the discharging part  125  and an upper end portion of the cutout part  154  may be closely adhered to each other so that shapes thereof are matched to each other, and the other opened cutout part  154  may be closed by, for example, a closing part  167  extended downwardly from a lower side of the discharging part  125  (see B of  FIG. 10 ), or be closed by a closing part  164  extended upwardly from an upper portion of the body  10  (see C of  FIG. 10 ). In this case, a concave part formed at an upper end of the closing part  164  and an outer surface of a lower side of the discharging part  125  may be closely adhered to each other so that shapes thereof are matched to each other. 
     In addition, although the component described above or a component to be described below that may exhaust air in the container  120  or the soundproofing cover  50 , such as the vacuum pump  30 , or the like, is not illustrated in  FIG. 10 , the blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 10  may also have such a component. 
     Referring to  FIG. 11 , a schematic side view of a blender according to yet still another exemplary embodiment of the present invention is illustrated. 
     The blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 11  is different from the blender according to the exemplary embodiment of the present invention described above in that it includes a display such as a transparent display provided in the soundproofing cover  50 . 
     The transparent display may display information related to an operation state of the blender, for example, revolutions per minute (RPM) of the motor  11 , a kind of content contained in the container  20 , an operation time of the motor input by the user or a time elapsing after the motor is operated, a maximum height of the content contained in the container  20 , a temperature of the content, vapor marks of which the number is increased in proportion to a temperature, a degree of vacuum in the container  20 , and the like, as illustrated in  FIG. 11 . In addition, they may also be displayed by augmented reality. 
     In addition, the component described above or a component to be described below that may exhaust air in the container  120  or the soundproofing cover  50 , such as the vacuum pump  30  illustrated in  FIG. 9  may also be disposed in the blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 11 , as in the blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 10 . 
     Referring to  FIG. 12 , a partial side cross-sectional view of a blender according to yet still another exemplary embodiment of the present invention is illustrated. 
     The blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 12  is different from the vacuum blender according to an exemplary embodiment of the present invention illustrated in  FIGS. 2 and 3  in that a contact part  33   c  may vertically move below the upper wall  52 . The contact part  33   c  includes a compressing plate  136   a  air-tightly closely adhered to a circumferential part of the concave part  27  of the container cover  21 , a connection nozzle  150  fixedly connected to a through-hole  137  of the compressing plate  136   a , a support bar  152  having one end slidably connected to a hole of a first flange  156  extended in a lateral direction of the connection nozzle  150  and the other end fixedly connected to the upper wall  52 , and an elastic member  155  inserted onto an outer surface of the support bar  152  to press the first flange  156  downwardly. 
     In addition, a second flange  157  extended in a lateral direction is formed in a portion of the connection nozzle  150  in which the compressing plate  136   a  and the connection nozzle  150  are connected to each other, so as to be fixed to the connection nozzle  150 , such that connection between the compressing plate  136   a  and the connection nozzle  150  may become firm. 
     A sealing member  134  such as an O-ring for improving air-tightness may be provided on a lower surface of the compressing plate  136   a , that is, a surface of the compressing plate  136  closely adhered to the container cover  21 . 
     Both end portions of the elastic member  155  may be fixedly connected to the upper wall  52  and the first flange  156 , respectively, to prevent the connection nozzle  150  from dropping downwardly. 
     The connection nozzle  150  may have a shape in which it is bent at an angle of approximately 90 degrees, and has one end portion connected to the vacuum tube  35  and the other end portion connected to the compressing plate  136   a . The connection nozzle  150  may be extended downwardly through an opening  151  of the inner wall  51 . 
     According to the configuration as described above, when the soundproofing cover  50  is mounted on the body  10  so as to cover the container  21 , the compressing plate  136   a  of the contact part  33   c  may be closely adhered to the circumferential portion of the concave part  27  of the container cover  21 . In this case, the compressing plate  136   a  may be pressed upwardly by a predetermined level by the container cover  21 , and the elastic member  155  is compressed by the movement of the compressing plate  136   a  as described above, such that elastic force of the elastic member  155  acts in a direction in which the elastic member  155  is expanded, thereby making it possible to improve a close adhesion property between the compressing plate  136   a  and the container cover  21 . 
     Referring to  FIG. 13 , a schematic side cross-sectional view of a blender according to yet still another exemplary embodiment of the present invention is illustrated. 
     The blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 13  is different from the vacuum blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 6  in that one end portion  31  of the vacuum tube (the first vacuum tube (or channel))  35  extended from the vacuum pump  30  is exposed in the seating part  13 , for example, the second inclined surface  113  formed at an edge, and one end portion  32  of the vacuum tube (the second vacuum tube (or channel))  35  connected to one end portion  31  and exposed in a lower end portion of the soundproofing cover  50  is exposed in the position determining part  53 , for example, the first inclined surface  153 . 
     As illustrated in an enlarged view in circle A of  FIG. 13 , an adsorption member  114  may be provided at one end portion of the vacuum tube  35  extended from the vacuum pump  30 . The adsorption member  114  may be closely adhered to the first inclined surface  153  of the position determining part  53  in which one end portion of the vacuum tube  35  is exposed when the soundproofing cover  50  is mounted on the body  10 , and may be more air-tightly closely adhered to the first inclined surface  153  when suction force is generated in the adsorption member  114  due to an operation of the vacuum pump  30 . 
     In addition, when the soundproofing cover  50  is detached from the body  10 , the adsorption member  114  and the position determining part  53  may be spaced apart from each other, as illustrated in  FIG. 14 . 
     Referring to  FIG. 15 , a schematic side cross-sectional view of a blender according to yet still another exemplary embodiment of the present invention is illustrated. 
     The blender according to yet still another exemplary embodiment of the present invention illustrated in  FIG. 15  is different from the vacuum blender according to an exemplary embodiment of the present invention illustrated in  FIGS. 2 and 3  in that one end portion of the vacuum pump (the first vacuum tube (or channel))  35  that is in communication with the suction port of the vacuum pump  30  is disposed to be exposed in a portion forming a space closed by the soundproofing cover  50  and the body  10  when the soundproofing cover  50  is mounted on the body  10 , on the upper surface of the body  10 . 
     In addition, a check valve  129  that may permit air in the container  20  to be exhausted and may block air from being introduced is provided in the container cover  21 . However, the check valve  129  is not limited thereto, but may be provided at a portion of the container  20 . 
     The check valve  129  includes a body  228  having a hollow pillar shape having an upper side that is closed and having an opening formed in a bottom thereof, an exhaust hole  128  formed in a sidewall of the body  228  and positioned outside the container cover  21 , and an exhaust hole cover  28  disposed on the sidewall of the body  228  so as to close the exhaust hole  128 . 
     The exhaust hole cover  28  may be formed of, for example, a membrane, and be lifted to allow the exhaust hole  128  to be opened when air in the soundproofing cover  50  is exhausted through the vacuum tube  35  by the vacuum pump  30 . Therefore, the air in the container  20  may flow into the soundproofing cover  50 , and may be exhausted to the outside of the soundproofing cover through the vacuum tube  35 . 
     In addition, a filter member  131  that may filter dust in the air or foreign materials may also be attached to one end portion of the vacuum tube  35  connected to the inlet port of the vacuum pump  30 . 
     In addition, a compressing member  110  closely adhered to the lower end portion of the soundproofing cover  50  when the soundproofing cover  50  is mounted on the body  10  may be provided on the upper surface of the body  10 . Air-tightness between the lower end of the soundproofing cover  50  and the body  10  may be improved by the compressing member  110 . The compressing member  110  may be formed of an elastic material, and may be formed along an edge of the lower end of the soundproofing cover  50 . 
     According to the configuration as described above, since the air in the container  20  and the air in the soundproofing cover  50  may be exhausted by a simple configuration, noise generated during a period in which the blender is used, for example, noise due to friction between the mixer blade  23  and the food, noise generated in the driving force transfer mechanism transferring the driving force of the motor  11  to the mixer blade  23 , and the like, may be effectively decreased. 
     It may be easily understood by those skilled in the art that various exemplary embodiments described hereinabove are not necessarily operated as only one exemplary embodiment, but may also configure other exemplary embodiments by various combinations of feature portions of the respective exemplary embodiments. 
     Various exemplary embodiments of the present invention have been described hereinabove, and as described above, according to the present invention, the soundproofing cover is mounted on the body, thereby making it possible to air-tightly cover the container and the driving force transfer mechanism, and the air in the soundproofing cover or the container may be exhausted, thereby making it possible to effectively block the noise generated in the container or in the vicinity of the seating part of the body. 
     In addition, since the soundproofing cover may be completely removed from the body, a protruding component is not formed on the body, such that a space in which the body may be received may be saved. Further, since it is possible to mount the container on the seating part of the body and observe the inner portion of the container even at any place of the entire circumference of the body, convenience of the use may be significantly improved. 
     In addition, the exemplary embodiments described above are provided to illustratively describe the present invention, and the present invention is not limited thereto. Modifications and alterations for these exemplary embodiments may be easily made by those skilled in the art, and it is to be noted that these modifications and alterations fall within the scope of the present invention as defined in the claims.