WO2015008943A1

WO2015008943A1 - Electric rice cooker

Info

Publication number: WO2015008943A1
Application number: PCT/KR2014/005587
Authority: WO
Inventors: 김차식
Original assignee: Kim Cha Sik
Priority date: 2013-07-15
Filing date: 2014-06-24
Publication date: 2015-01-22
Also published as: CN105451610B; CN105451610A; JP2016529962A

Abstract

An invention relating to an electric rice cooker is disclosed. The electric rice cooker according to an embodiment of the present invention comprises: an upper case part; an upper heater which is located on the lower side of the upper case part and downwardly emits heat; an inner container located on the lower side of the upper heater and containing an object to be cooked; an upper heat transfer plate located on the lower side of the upper heater while facing the inner container; a body constituting an outer shape of the electric rice cooker and having the inner container installed therein; and a vacuum packing part installed along the boundary of the upper heat transfer plate facing the inner container and blocking the flow of air moving between the upper heat transfer plate and the inner container.

Description

electric rice cooker

The present invention relates to an electric rice cooker, and more specifically, to firmly fix the packing unit, to increase the degree of vacuum to prevent food corruption, by using a vacuum release unit provided with a transmission unit or an operating lever and the like provided with a motor. It relates to an electric rice cooker which can be made easy to open the upper case portion located on the upper side of the inner cylinder.

In general, an electric rice cooker is a cooking utensil for cooking rice or food using heat generated by electric resistance. The electric rice cooker holds food such as rice in the main body portion and closes the lid, and heats the bottom portion with electricity to perform cooking. The conventional electric rice cooker as described above was provided with a valve for discharging steam, the valve is simply operated to discharge the steam or stop the discharge of steam. In addition, the electric rice cooker is provided with a packing between the lid covered in the inner cylinder of the main body to maintain a high pressure state inside the body, and after cooking is configured to release the high pressure state by operating the opening and closing means to discharge steam to the outside. In addition, the conventional electric rice cooker has a problem that the heater is present only in the lower portion based on the inner cylinder, the air inside the inner cylinder is not uniformly heated, and thus, when the food is stored for a long time, the food is frequently damaged. Background art of the present invention is disclosed in Korean Unexamined Patent Publication No. 2011-0095995 (published on Aug. 26, 2011, name of the invention: an automatic electric rice cooker).

The conventional electric rice cooker has a problem that the heater is present only in the lower portion based on the inner cylinder, the air inside the inner cylinder is not heated uniformly, the present invention is equipped with an upper heater as well as the lower heater to increase the temperature uniformity inside the inner cylinder for a long time Ensure food storage is possible.

In the related art, a technique for improving the storage of food by maintaining the inside of the rice cooker at a low pressure after cooking is completed has been proposed, but the operation of releasing the low pressure state and lifting the upper case of the rice cooker is not performed properly. Discomfort is aggravated.

Accordingly, the present invention is to provide an electric rice cooker that can easily lift the upper case portion of the low-pressure electric rice cooker.

In addition, the rotation of the operating lever provided in the upper housing of the electric rice cooker to provide air through the moving hole of the sealing member to provide an electric rice cooker that can easily release the vacuum state.

Still another object of the present invention is to provide an electric rice cooker which can firmly fix the packing part and can prevent the occurrence of gap due to vacuum suction.

Still another object of the present invention is to provide an electric rice cooker which can prevent the mutual interference during the vacuum release by rotating the operating lever because it is provided with a steam discharge unit separately.

Still another object of the present invention is to provide an electric rice cooker which can prevent a safety accident in advance by controlling a power on / off state according to inner cylinder seating and separation using a sensing switch unit.

Electric rice cooker according to the present invention: the upper case and the upper case is located on the lower side, the upper heater for dissipating heat to the lower side, the lower side of the upper heater and the inner passage in which the cooking object is contained, facing the inner barrel The upper heat transfer plate located on the lower side of the upper heater, and the outer shape of the rice cooker, the inner cylinder is installed inside, and is installed along the edge of the upper heat transfer plate facing the inner cylinder, the air of the moving between the upper heat transfer plate and the inner cylinder It characterized in that it comprises a vacuum packing unit for blocking the flow.

Electric rice cooker according to an embodiment of the present invention, in addition to the configuration, in communication with the inner cylinder, is operated by the rotational power of the motor to adjust the pressing force, and discharged the pressure formed between the upper heater and the inner cylinder again closed state And an upper temperature sensor installed at the automatic valve part to maintain the upper case part or the upper heat transfer plate and measuring the temperature of the heated air by the operation of the upper heater or the upper heater.

In addition, the fixing plate is fixed to the upper case portion, may further include an upper heater bracket located on the lower portion of the fixing plate, the upper heater is fixed to the inside of the upper heater bracket to generate heat, the upper heat transfer plate through the upper heater bracket It is characterized by transferring the heat moving downward to the inside of the inner cylinder.

In addition, the automatic valve unit is fixed to the fixed plate, the valve case having a first mounting portion and the second mounting portion, a driving portion fixed to the inside of the first mounting portion to supply rotational power, the second mounting portion receiving the power of the driving portion Rotated in, the inner side is provided with a rotation control unit having a height adjustment inclined protrusion is gradually increased inclined, and a height projection in contact with the height adjustment inclination projection, the movement is moved up and down by the rotation of the height adjustment inclination protrusion And a moving case part for guiding the lower part of the moving part, a support plate positioned between the moving part and the moving case part, and a vertical bar extending from the supporting plate and protruding upward of the moving part. An elastic member for elastically pressing the urging member downward, an elastic force being variable by rotation of the rotation control unit, and a movable cable Portion is connected to the lower side, the first sealing plate is located on the lower side of the upper closure member, and a top closure member which is provided on the lower side, it is preferable to include a lower sealing member which is provided inside the ball and which communicates the discharge pressure of the inner barrel.

In addition, the valve case is coupled to the lower part of the first case and the first case having a first mounting portion and the second mounting portion, and the pressure discharge pipe for guiding the discharged fluid to the outside of the upper case portion by lifting the upper sealing member upwards And a second case having an anti-rotation protrusion inserted into the anti-rotation hole provided in the moving case part to restrict rotation of the moving case part, wherein the first mounting part forms a space in which the driving part is located inside. It is characterized in that it comprises a heat dissipation protrusion protruding from the first mounting surface and the first mounting surface to support the drive unit, forming a moving passage of air between the first mounting surface and the drive unit.

In addition, the drive unit preferably includes a motor fixed to the first mounting unit and a drive gear that rotates in response to the power of the motor.

In addition, it is preferable that the rotation control unit includes a driven gear that is engaged with the driving gear and a cylindrical rotation control body extending downward of the driven gear.

In addition, the moving part is drawn into the inner side of the rotating control body and moved up and down along the moving case part, and includes a moving base through which a vertical bar penetrates in the center, and the lifting and lowering protrusion is preferably installed on both sides of the moving base about the vertical bar.

In addition, the elastic part is located on the outer side of the first pressing member and the first pressing member which is supported by the upper side is supported on the rotation control portion and the lower side, the second pressing member is supported by the upper side and the lower side is supported on the support plate It is preferable to include.

In another aspect, the present invention, it is preferable to further include a sensing switch unit which is installed in the main body hinged to the upper case portion, when the inner cylinder is seated on the main body and is pressed by the load of the inner cylinder while being in contact with the upper circumference of the inner cylinder.

In addition, the sensing switch unit, protruding to the upper side of the main body on which the inner cylinder is seated, including a second switch for sensing the movement of the elevating member and the elevating member moved downward while contacting the inner circumference of the inner cylinder and transmitting the measured value to the control unit. It is preferable.

In addition, the present invention preferably further comprises an internal temperature measuring sensor for measuring the inner space temperature of the inner cylinder.

In addition, the vacuum packing unit is installed along the circumference of the upper heat transfer plate, the first wing member and the packing which is provided in contact with the outer side of the upper heat transfer plate extending to the upper side of the packing body and the packing body having an inner groove into which the edge of the upper heat transfer plate is inserted. It is preferable to include a second wing member extending downward of the body in contact with the inner surface of the inner cylinder.

In addition, the second wing member has a plurality of sealing protrusions extending from the packing body and protruding from the side of the second wing body facing the inner tube and the inner side of the second wing body facing the inner cylinder and in contact with the inner surface of the inner cylinder. It is preferable to include.

In another aspect, the present invention, it is preferable to further include a lower temperature sensor for measuring the temperature of the lower heater portion and the lower heater portion located in the lower side of the inner cylinder to dissipate heat upward.

In addition, the present invention, it is preferable to further include an outer cylinder which is installed in a shape that surrounds the outside of the inner cylinder while supporting the lower heater.

In addition, the present invention, it is preferably provided below the outer cylinder, and further comprises an air discharge portion for automatically opening and closing the exhaust hole in accordance with the temperature of the air between the inner cylinder and the outer cylinder.

In addition, the air exhaust portion is fixed to the lower portion of the outer cylinder, it is preferable to include a shielding projection extending from the bimetal body and the bimetal body which one side or both sides are bent upward by the temperature rise to open and close the exhaust hole.

In addition, the present invention is provided in a shape surrounding the upper edge of the outer cylinder, it is preferable to further include a support packing portion for shielding the upper space between the inner cylinder and the outer cylinder.

In another aspect, the present invention, the opening and closing sensor to detect the operation of the opening and closing button to unlock the upper case portion and the opening and closing of the opening and closing driving unit and the opening and closing driving unit for generating power by receiving the measured value of the opening and closing sensor unit to lift the upper case. It characterized in that it further comprises a delivery unit.

In addition, the opening and closing sensor unit, it characterized in that it comprises a first switch for transmitting the measured value to the control unit by detecting the movement of the switch projection and the switch projection pressed by the rotation of the opening and closing button portion.

In addition, the transmission unit is rotated by the operation of the opening and closing drive unit, the height adjustment housing is provided with a height adjustment housing is provided along the upper circumference and the support projections in contact with the inclined surface is located on the upper side of the height adjustment housing, The moving body portion is moved up and down by the rotation, and installed in a shape penetrating the moving body portion, it is characterized in that it comprises a moving bar for moving with the moving body portion to press the upper case portion upward.

Electric rice cooker according to another embodiment of the present invention, the upper case portion, the upper heater, the inner passage, the upper heat transfer plate, the main body, the vacuum packing unit, in addition to the cover member provided on the mounting plate provided on the upper heat transfer plate The cover member is provided on the cover member adjacent to the steam discharge portion and the steam discharge portion for discharging the steam by the steam pressure of the inner cylinder to maintain the set pressure, the upper sealing member is seated on the upper side of the lower sealing member The vacuum is formed by decreasing the temperature of the food, characterized in that it further comprises a vacuum release unit for releasing the vacuum state formed in the inner cylinder.

In another aspect, the present invention is characterized in that it further comprises a support packing portion for supporting the bottom of the upper inclined surface of the inner cylinder to prevent the discharge of the lower heat and to seal.

In addition, the vacuum packing portion is extended to the upper side of the packing body and the packing body is formed with an inner groove inserted around the upper heat transfer plate is pressed by the mounting plate while covering the upper peripheral surface of the upper heat transfer plate and the lower side of the packing body It characterized in that it comprises a second wing member extending in close contact with the upper inclined surface of the inner cylinder.

In addition, the support packing portion is supported by the outer cylinder provided on the outside of the inner cylinder, extending from the support body and the support body provided on the lower side of the fixed rib extending from the main body is supported in close contact with the bottom of the upper inclined surface to block the discharge of the lower heat It comprises a locking support member for performing a sealing, the support body is inserted and fixed by a coupling member fastened to the fixing ribs through the outer cylinder.

In addition, the electric rice cooker of the present invention, the inner cylinder is seated for cooking or when the power is turned on and off by the detection switch unit when the separation for washing, the detection switch unit, the upper side of the second switch and the suture body installed in the main body The lever member and the end of the lever member which are rotatably installed in the engagement are coupled to, and are provided in the elevating member and the second switch to be raised or lowered in contact with or separated from the inner cylinder, the operation for turning the power on and off by the lever member by the elevating member It characterized in that it comprises a button.

In addition, the electric rice cooker of the present invention is provided with an upper heater for heating the upper side, the upper heater is characterized in that coupled to the bottom of the mounting plate.

In addition, the steam discharge portion is formed in the cover member, the flow space for discharging the steam in the inner cylinder to the steam discharge hole and the installation hole formed in the upper heat transfer plate, the lower sealing member and the lower sealing member of which the steam passage is formed in the center Seated on the upper side and installed to flow in the flow space, characterized in that it comprises an upper sealing member for discharging steam through the vertical movement, if the internal pressure is above the set value.

In addition, the vapor discharge hole is characterized in that penetrated upwardly connected to the side of the upper sealing member.

In addition, the steam cooker of the present invention, characterized in that the upper side of the upper sealing member is provided with an auxiliary weight member that protrudes to the outside through the flow space portion to control the steam discharge through the vertical movement.

In addition, the steam cooker of the present invention, the upper sealing member is characterized in that it comprises a shape including one or more protrusions and the inner groove so that the auxiliary weight member is inserted.

In addition, the steam cooker of the present invention, characterized in that the upper side of the upper sealing member includes a spring for controlling the steam discharge through the spring elastic force and is connected to the spring support in the flow space.

In addition, the upper sealing member includes at least one protrusion and an inner groove so that the spring support can be inserted into the upper sealing member, and the lower side of the spring support includes one or more protrusions and the inner groove to be coupled to the upper sealing member. It characterized in that the coupling portion is further provided.

In addition, the vacuum releasing portion is formed in the cover member, the installation space portion is formed in the installation space and the air inlet hole is connected to the air inlet hole is inserted into the installation space portion, the through-hole communicating with the lower side is formed on the upper side Sealing member provided with a seating groove

It is characterized in that it comprises a sealing member which is rotatably seated in the seating groove portion, the movement hole is in communication with the connection hole through the rotation or the connection hole is blocked.

In addition, the sealing member is provided at the end of the support shaft and the support shaft is formed on the upper side of the ball member and the ball member seated in the seating groove portion, and connected to the outside through the connection hole formed in the cover member, the ball member It characterized in that it comprises an operating lever for rotating.

Also, the moving hole communicates from the lower part of the ball member to the center part, and communicates with the outside of one side or both sides of the shanghai pupil and the shanghai pupil which is connected to the through hole of the sealing member, and coincides or does not coincide with the coupling hole by the upper operating lever rotation. It characterized in that it comprises a left and right movement hole formed not.

In addition, the left and right moving holes are formed in the direction of the center of the ball member, characterized in that the installation space portion is formed with a pressing groove for pressing the upper curved surface of the ball member and the upper surface of the sealing member.

In addition, the electric rice cooker of the present invention is characterized in that it further comprises an opening and closing portion to automatically open and close according to the temperature during heating and warming through the bimetal member mounted on the bottom outer cylinder bottom.

The electric rice cooker of the present invention includes not only a lower heater but also an upper heater to increase the temperature uniformity inside the inner cylinder to allow food storage for a long time and prevent food corruption.

When the electric rice cooker according to an embodiment of the present invention rotates the opening and closing button part to lift the upper case part of the low-pressure electric rice cooker, the opening and closing driving part is operated by the opening and closing sensor part detecting the rotation of the opening and closing button part. Since the case portion is pushed upward, the opening operation of the upper case portion can be easily performed.

Electric rice cooker according to another embodiment of the present invention, by rotating the lever provided in the upper housing of the electric cooker flows a small amount of air from the outside through the ball member moving hole of the sealing member can easily release the vacuum state through the rotation have.

In addition, the present invention can be firmly fixed to the packing portion can prevent the occurrence of gaps by vacuum suction.

In addition, since the present invention is provided with a steam discharge unit separately, it is possible to prevent the mutual interference during the vacuum release by the operation lever rotation.

In addition, the present invention can control the power on and off state according to the inner cylinder seating and detachment using the sensing switch unit can prevent the safety accident in advance.

1 is a partial cutaway perspective view schematically showing the structure of an electric rice cooker according to an embodiment of the present invention.

Figure 2 is a perspective view schematically showing the appearance of the electric rice cooker according to an embodiment of the present invention.

3 is a perspective view schematically showing a state in which an electric rice cooker according to an embodiment of the present invention is separated into an upper case part and an inner tube body.

Figure 4 is an exploded perspective view showing the main portion of the upper case portion according to an embodiment of the present invention.

5 is an exploded perspective view showing a main portion of the main body according to an embodiment of the present invention.

6 is an exploded perspective view illustrating a state in which an open / close sensor unit, an open / close drive unit, and a transmission unit according to an embodiment of the present invention are installed.

7 is an exploded perspective view showing a delivery unit according to an embodiment of the present invention.

8 is a perspective view illustrating a state in which the opening and closing drive unit and the transmission unit are coupled according to an embodiment of the present invention.

9 is a front view illustrating a state in which an open / close sensor unit, an open / close drive unit, and a transmission unit according to an embodiment of the present invention are installed.

10 is a cross-sectional view schematically illustrating a state in which a sensing switch unit according to an embodiment of the present invention is installed.

11 is a cross-sectional view schematically showing a state in which a sensing switch unit detects an inner cylinder according to an embodiment of the present invention.

12 is a bottom perspective view showing a lower portion of an automatic valve unit according to an embodiment of the present invention.

13 and 14 are exploded perspective views of the automatic valve unit according to an embodiment of the present invention.

15 is a perspective view illustrating a rotation control unit and a moving case unit according to an embodiment of the present invention.

16 is a perspective view showing a lower portion of the rotation control unit according to an embodiment of the present invention.

17 is a perspective view of an electric rice cooker according to another embodiment of the present invention.

18 is a partial plan view of an electric rice cooker according to another embodiment of the present invention.

19 is a cross sectional view taken along the line “A-A” in FIG. 17.

20 is a partial cross-sectional view taken along line “B-B” in FIG. 17.

21 (a) and (b) are enlarged views of the inner cylinder settled state and the inner cylinder separated state of the “C” portion shown in FIG. 20.

22 is an exploded perspective view of main parts of the steam discharge unit and the vacuum release unit of the rice cooker according to another embodiment of the present invention.

23 is a cross-sectional view of the assembled state according to FIG. 22.

24 is a cross-sectional view of the vacuum holding state by the vacuum releasing unit according to FIG. 23.

25 is a cross-sectional view of the vacuum release state by the vacuum releasing unit according to FIG. 23.

26 is a cross-sectional view of the spring is installed on the upper side of the spring support according to another embodiment of the present invention.

27 is a cross-sectional view of the steam discharge unit and the vacuum release unit of the rice cooker according to another embodiment of the present invention.

[Drawing symbol]

1: electric rice cooker 10: upper case portion 12: upper housing

14: frame portion 20: upper heater portion 21: fixed plate

22: first connection hole 24: upper heater bracket 25: upper heater

27: upper heat transfer plate 28: second connection hole 30: inner cylinder

40: vacuum packing part 42: packing body 43: inner groove

45: first wing member 46: second wing member 47: second wing body

48: sealing projection 50: automatic valve portion 52: valve case

54: first case 55: first mounting portion 56: first mounting surface

57: heat dissipation projection 58: the second mounting portion 60: the second case

61: the second case body 62: pressure discharge pipe 63: anti-rotation protrusion

65: drive portion 67: automatic valve motor 68: drive gear

70: rotation control unit 72: driven gear 74: rotation control body

76: height adjustment inclined protrusion 78: guide protrusion 80: moving part

82: moving base 84: telescoping 86: guide groove

88: locking groove 90: moving case portion 92: moving case body

94: guide rail 96: locking jaw 97: anti-rotation ball

98: height guide groove 99: coupling groove 100: pressing member

102: support plate 104: vertical bar 110: elastic portion

112: first pressing member 114: second pressing member 120: upper sealing member

122: first sealing plate 124: engaging projection 130: lower sealing member

132: second sealing plate 134: pressure discharge hole 137: automatic valve packing

140: main body 141: body housing 142: base housing

143: opening and closing button portion 144: opening and closing button projection 145: support packing portion

147: elastic hinge portion 148: cover case 150: lower heater portion

152: lower heat transfer section 154: lower heater bracket 156: lower heater

160: air discharge unit 162: bimetal body 164: shielding projection

170: outer cylinder 172: exhaust hole 180: opening and closing sensor

182: switch protrusion 184: first switch 190: opening and closing drive unit

192: drive motor 194: drive shaft 196: support housing

200: transmission unit 202: height adjustment housing 204: inclined surface

206: moving body portion 207: body portion 208: support protrusion

209: moving bar 210: sensing switch unit 212: elevating member

214: second switch 220: internal temperature sensor 230: upper temperature sensor

240: lower temperature sensor 401: inner cylinder 402: main body

403: upper inclined surface 404: mounting plate 405: upper heat transfer plate

406: installation hole 407: cover member 408: case

409: upper housing 409a: communication hole 410: packing part

411: vacuum packing part 412: packing body 413: inner groove

414: first wing member 415: second wing member 416: support packing portion

417: support body 418: locking support member 419: upper heater

420: switch 421: second switch 422: lever member

423: elevating member 424: operation button 425: coupling member

426: fixed rib 430: steam outlet 432: flow space

433: steam discharge hole 434: lower sealing member 435: steam discharge passage

436: upper sealing member 437: spring support 438: auxiliary weight member

439: spring 440: vacuum release part 441: installation space part

443: air inlet hole 444: sealing member 445: through hole

446: seating groove 447: fitting 448: connection hole

450: sealing member 452: ball member 454: support shaft

456: operation lever 458: moving ball 457: Shanghai pupil

459: left and right moving hole 470: fastening member

Hereinafter, an electric rice cooker according to an embodiment of the present invention will be described with reference to the accompanying drawings. For convenience of explanation, the electric rice cooker will be described as an example. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

1 to 6, the electric rice cooker 1 according to an embodiment of the present invention, the main body 140, the upper case 10, opening and closing sensor unit 180, opening and closing drive unit 190 , Transmission unit 200, upper heater unit 20, inner cylinder 30, vacuum packing unit 40, automatic valve unit 50, lower heater unit 150, outer cylinder 170, opening and closing sensor unit 180 ), The opening and closing driving unit 190, the transmission unit 200, the detection switch unit 210, the internal temperature measuring sensor 220, the upper temperature sensor 230 and the lower temperature sensor 240.

The upper case 10 and the main body 140 forming the outer shape of the rice cooker 1 are hinged, and the upper case 10 is installed on the upper side of the main body 140. The upper case part 10 and the main body 140 are molded by injection molding, and the upper case part 10 is hingedly connected to the main body 140 so that the upper case part 10 can rotate to open and close the upper side of the inner cylinder 30. The upper case part 10 includes an upper housing 12 forming an outer shape, and a frame part 14 installed inside the upper housing 12.

The upper heater unit 20 is installed at the lower side of the frame unit 14, and various kinds of heaters may be used in the technical concept of being fixed inside the upper case unit 10 and dissipating heat downward.

The upper heater unit 20 is provided to increase the temperature uniformity inside the inner cylinder to allow food storage for a long time and to prevent food corruption.

The upper heater unit 20 according to an embodiment includes a fixing plate 21, the upper heater bracket 24, the upper heater 25 and the upper heat transfer plate 27.

The fixing plate 21 fixed to the lower side of the frame portion 14 is formed in a circular plate shape, and has a heat insulation function to prevent heat of the upper heater 25 from being transferred to the frame portion 14. The first connecting hole 22 is provided in the fixing plate 21, and the automatic valve part 50 is installed on an upper side of the fixing plate 21 facing the first connecting hole 22.

An upper heater bracket 24 having an inner space for installing the upper heater 25 is installed above the upper heat transfer plate 27. The upper heater bracket 24 is formed in a conduit shape, and the upper heater bracket 24 is fixed to the fixing plate 21 while the upper heater bracket 24 surrounds the upper heater 25 to fix the upper heater 25 to the fixing plate 21.

The upper heater bracket 24 and the upper heat transfer plate 27 are formed of a material that facilitates heat transfer. The upper heater 25 which is fixed inside the upper heater bracket 24 to generate heat is operated by supply of electricity to generate heat.

The upper heat transfer plate 27 facing the inner cylinder 30 and positioned below the upper heater 25 has an inner cylinder 30 positioned above the inner cylinder 30 and moved downward through the upper heater bracket 24. It can be transformed into various shapes within the technical concept of transmitting to the inside.

The upper heat transfer plate 27 transfers the heat generated from the upper heater 25 to the lower direction in which the inner cylinder 30 is installed, thereby improving the thermal efficiency of the upper heater unit 20.

A second connection hole 28 is provided in the upper heat transfer plate 27, and a lower sealing member 130 is installed through the second connection hole 28.

The inner cylinder 30 positioned below the upper heater unit 20 may be formed in various shapes within a technical concept in which a cooking object is contained.

The upper temperature sensor 230 is installed in the upper case part 10 or the upper heater part 20, and measures the temperature of the upper heater part 20 and transmits the measured value to the controller. The upper temperature sensor 230 is installed on the upper heater bracket 24 or the upper heating plate 27 constituting the upper and lower heaters 20. The upper temperature sensor 230 may directly measure the temperature of the upper heater unit 20 in direct contact with the upper heater unit 20, and may be installed to be spaced apart from the upper heater unit 20 so that the upper heater unit 20 or The temperature of the heated air may be measured by the operation of the upper heater unit 20. Based on the measured value of the upper temperature sensor 230, it is possible to control the set temperature of the upper heater unit 20 according to the food.

The internal temperature measuring sensor 220 may be installed at various installation positions including the upper case part 10 or the upper heater part 20 in the technical concept of measuring the inner space temperature of the inner cylinder 30. The internal temperature measuring sensor 220 according to an embodiment is installed at the center of the upper heat exchanger plate 27. Since the lower side of the internal temperature measuring sensor 220 installed in the vertical direction from the center of the upper heat exchanger plate 27 communicates with the inner space of the inner cylinder 30, the inner space temperature of the inner cylinder 30 is measured to transmit a measured value to the controller. .

The lower temperature sensor 240 uses various types of sensors within the technical concept of measuring the temperature of the lower heater unit 150. The lower temperature sensor 240 may be installed in a part constituting the outer cylinder 170 or the lower heater unit 150. The lower temperature sensor 240 may directly measure the temperature of the lower heater unit 150 by directly contacting the lower heater unit 150. The lower temperature sensor 240 may be installed to be spaced apart from the lower heater unit 150 to lower the heater unit 150. The temperature of the heated air may be measured by the operation of the lower heater unit 150. Based on the measured value of the lower temperature sensor 240, it is possible to control the set temperature of the lower heater unit 150 according to the food.

The vacuum packing part 40 provided between the upper heater part 20 and the inner cylinder 30 is installed along the edge of the upper heater part 20 which faces the inner cylinder 30. The vacuum packing part 40 may have various shapes of packings in a technical concept of blocking air from moving between the upper heater part 20 and the inner cylinder 30.

The vacuum packing part 40 according to an embodiment is provided along the circumference of the upper heat exchanger plate 27 and has a packing body 42 having an inner groove 43 into which the edge of the upper heat transfer plate 27 is inserted, and the packing body 42. A first wing member 45 extending upwardly of the body 42 and installed in contact with an outer side of the upper heat transfer plate 27, and a second extension downward of the packing body 42 and in contact with an inner surface of the inner cylinder 30. A wing member 46 is included.

The packing body 42 is formed in a ring shape and connected to the edge of the upper heat transfer plate 27. Since the inner groove 43 is provided on the inner side of the packing body 42 facing the edge of the upper heat transfer plate 27, the edge of the upper heat transfer plate 27 is inserted into the inner groove 43 so that the packing body 42 is upper. It is coupled to the heat transfer plate (27).

The first wing member 45 extending upward of the packing body 42 is in contact with the upper side of the upper heat transfer plate 27, and the second wing member 46 extending downward of the packing body 42 is the upper heat transfer plate 27. ) And the inner cylinder 30.

The second wing member 46, various shapes of packing may be used in the technical concept of blocking the movement of air between the upper heat transfer plate 27 and the inner cylinder (30). The second wing member 46 according to the embodiment is extended from the packing body 42 and the second wing body 47 and the inner cylinder 30 positioned between the upper heat transfer plate 27 and the inner cylinder 30 and It includes a plurality of sealing projections 48 protruding from the side of the second wing body 47 facing the inner surface of the inner cylinder (30).

Since the sealing protrusion 48 protruding from the second wing body 47 is in contact with the inner side surface of the inner cylinder 30, it blocks the air moving between the second wing body 47 and the inner cylinder 30 to preserve the food. Can be kept long.

In addition, the first wing member 45 and the packing body 42 of the vacuum packing portion 40 is in contact with the lower edge of the upper heater 20, while being pressed in the lower direction in which the inner cylinder 30 is installed, the upper heater portion ( It is preferable to seal between 20) and the inner cylinder 30.

The pressure formed between the upper heater 20 and the inner cylinder 30 sealed by the vacuum packing part 40 is discharged to the outside of the rice cooker 1 by the automatic valve part 50.

The automatic valve unit 50 installed in the upper heater unit 20 and communicating with the inner cylinder 30 includes a valve case 52, a driving unit 65, a rotation control unit 70, a moving unit 80, and a moving case. The unit 90, the support plate 102, the pressing member 100, the elastic part 110, the upper sealing member 120, and the lower sealing member 130 are included.

As shown in FIGS. 4 and 12 to 16, the automatic valve unit 50 is installed inside the upper case unit 10 to communicate with the inner cylinder 30 and operated by the rotational power of the motor to adjust the pressing force. In addition, various types of valve devices may be used in the technical concept of discharging the pressure formed between the upper case part 10 and the inner cylinder 30 and then maintaining the closed state again.

The fixing plate 21 of the upper heater unit 20 is provided with a first connection hole 22 communicating with the inner side of the inner cylinder 30, and the valve case 52 is fixed to the upper side of the fixing plate 21.

The valve case 52 includes a first mounting portion 55 which forms a space in which the driving unit 65 is installed, and a second mounting portion 58 which forms a space in which components such as the rotation control unit 70 are installed. do.

The valve case 52 according to an embodiment includes a first case 54 having a first mounting portion 55 and a second mounting portion 58, and a second case coupled to a lower portion of the first case 54. (60).

The first mounting portion 55, on which the automatic valve motor 67 of the driving portion 65 is installed, includes a first mounting surface 56 and a first mounting surface 56 which form a space in which the driving portion 65 is located inside. Protruding from) includes a heat dissipation projection (57) for supporting the drive unit (65).

The driving unit 65 is supported by the heat dissipation protrusion 57 so as to be spaced apart from the first mounting surface 56, so that a moving passage of air is formed between the first mounting surface 56 and the driving unit 65.

Therefore, the air superheated around the drive unit 65 is moved between the first mounting surface 56 and the drive unit 65 is discharged to the outside of the automatic valve unit 50, to prevent overheating of the drive unit 65. Can be.

In the second mounting portion 58 adjacent to the first mounting portion 55, the rotation adjusting portion 70, the elastic portion 110, the moving portion 80, the pressing member 100, the moving case portion 90, and the like are provided. Is installed.

The second case 60 coupled to the lower part of the first case 54 has a pressure discharge pipe line 62 which lifts the upper sealing member 120 upward and guides the discharged fluid to the outside of the upper case part 10. ).

The second case 60 according to an embodiment of the present invention includes a second case body 61 installed in a horizontal direction, and a pressure discharge pipe path 62 and a second extending upward from one side of the second case body 61. Protruding to the upper side of the case body 61 includes a rotation preventing projection 63 is inserted into the rotation prevention hole 97 provided in the moving case portion (90).

The anti-rotation protrusion 63 is inserted into the anti-rotation hole 97 formed in the lower portion of the moving case part 90 to restrain the rotation of the moving case part 90.

As the driving unit 65 fixed inside the first mounting unit 55, various kinds of driving apparatuses may be used within the technical concept of supplying rotational power for operating the automatic valve unit 50.

The driving unit 65 according to the exemplary embodiment includes an automatic valve motor 67 fixed to the first mounting unit 55 and a driving gear 68 that rotates by receiving power from the automatic valve motor 67.

The rotation control unit 70 rotated by the second mounting unit 58 by receiving the power of the driving unit 65 extends below the driven gear 72 and the driven gear 72 meshed with the driving gear 68. It includes a cylindrical rotating control body (74).

The inner side of the rotation control body 74 is provided with a height adjustment inclined projection 76 gradually increasing inclined height.

The height adjustment inclined protrusion 76 extends to the lower side of the rotation adjusting body 74, and the height protruding downward is gradually increased.

Rotation control body 74 is formed in a cylindrical shape is blocked on the upper side, the lower side of the rotation control body 74 is connected to the guide projection 78.

The guide protrusion 78 extends inward of the rotation control body 74 at the lower end of the rotation control body 74. The moving case part 90 is introduced into the rotation adjusting body 74, and the height guide groove 98 is provided outside the moving case part 90.

The guide protrusion 78 is moved from the upper side of the moving case portion 90 to the lower side, and then rotates in the circumferential direction of the moving case portion 90 to be introduced into the height guide groove 98.

The moving part 80 is retracted inside the rotation control part 70, and the moving part 80 has a height protrusion 84 in contact with the height adjusting inclination protrusion 76, and the height adjustment inclination protrusion 76 is formed. It is moved up and down by rotation.

The moving unit 80 according to an embodiment is moved into the inside of the rotation control body 74 to move up and down along the moving case unit 90 and the moving base 82 through which the vertical bar 104 penetrates. It includes a telescoping protrusion 84 extending upward from both sides of the movable base 82.

The movement base 82 is formed in a disk shape, and is provided with a hole for moving the vertical bar 104 up and down inside.

The height projection 84 extending upward of the moving base 82 is moved up and down while contacting the height adjustment inclination projection 76. The height projections 84 are installed on both sides of the movable base 82 with respect to the vertical bar 104.

Guide grooves 86 are formed in the longitudinal direction near both side edges of the movable base 82, and a locking groove 88 spaced apart from the longitudinal direction is also formed at the outer edge of the movable base 82. The locking groove 88 according to the embodiment forms a groove symmetrical to the upper edge of the movable base 82.

It is installed in a shape surrounding the lower portion of the moving part 80 and the moving case part 90 is formed in a cylindrical shape in which an upper side is opened and a lower side is blocked.

The moving case part 90 drawn into the rotation adjusting part 70 may be formed in various shapes within a technical concept of guiding vertical movement of the moving part 80 at the outside of the moving part 80.

The moving case part 90 according to the exemplary embodiment includes a cylindrical moving case body 92 having a cylindrical upper side through which the moving part 80 is inserted, and a protruding upward and downward direction inside the moving case body 92. The guide rail 94 and the locking jaw 96 protrudes from the upper side of the moving case body 92 to the inside of the moving case body 92.

The guide rail 94 is inserted into the guide groove 86 of the moving part 80 to guide the vertical movement of the moving part 80, and the rotation of the moving part 80 is restricted.

Since the locking groove 88 of the moving unit 80 is positioned below the locking jaw 96, when the moving unit 80 tries to move to the upper side of the moving case unit 90, the locking groove 88 is locked. It catches the 96, and prevents the upper side separation of the moving part 80.

The lower side of the moving case body 92 is provided with a rotation preventing hole 97, the height guide groove 98 is formed in a spiral shape on the outside of the moving case body 92.

A through hole is formed at the center lower portion of the moving case body 92 so that the upper sealing member 120 is inserted, and the engaging protrusion 124 provided on the upper sealing member 120 is disposed at the lower side of the upper sealing member 120. Since it is inserted into the coupling groove 99 provided, the upper sealing member 120 is coupled to the moving case portion (90).

The pressing member 100 positioned between the moving part 80 and the moving case part 90 extends upward from the disc-shaped support plate 102 and the support plate 102 to the upper side of the moving part 80. It includes a vertical bar 104 protruding.

The elastic portion 110 installed on the upper side of the support plate 102 is elastically pressurizing the pressing member 100 to the lower side, and various kinds of pressing devices in the technical concept that the elastic force is changed by the rotation of the rotation control unit 70 Can be used.

The elastic unit 110 according to an embodiment uses a coil spring having excellent cost performance.

The elastic portion 110 according to the embodiment, the upper side is supported by the rotation control unit 70, the lower side is supported by the support plate 102 and the upper side is supported by the moving unit 80. And a second pressing member 114 having a lower side supported by the support plate 102, and the second pressing member 114 is located outside the first pressing member 112.

The first pressing member 112 pressurizes the support plate 102 with a constant force at all times, and the second pressurizing member 114 adjusts the pressing force by the rotation of the rotation control unit 70.

When the distance between the moving part 80 and the support plate 102 is long, the elastic force of the second pressing member 114 provided between the moving part 80 and the support plate 102 is weakly formed, and the moving part 80 When the distance between the support plate 102 and the support plate 102 is short, the elastic force of the second pressing member 114 provided between the moving unit 80 and the support plate 102 is strongly formed.

The upper sealing member 120 connected to the lower side of the moving case part 90 is molded to include rubber or silicone having elasticity.

Upper sealing member 120 according to an embodiment, the first sealing plate 122 formed in a concave shape toward the lower side is provided on the lower side, the engaging projection 124 of the convex shape on the upper side of the first sealing plate 122. ) Is connected.

The lower sealing member 130 positioned below the upper sealing member 120 has a pressure discharge hole 134 communicating with the inner side of the inner cylinder 30 on the inner side thereof, and faces the first sealing plate 122. The second sealing plate 132 is provided on the upper side.

The second sealing plate 132 is formed in a concave shape toward the upper side, and is molded by including rubber or silicone having elasticity.

A through hole is provided below the second case 60, and an automatic valve packing 137 of a soft material is installed along the periphery of the through hole.

Therefore, the fluid including the steam raised upward through the lower sealing member 130 moves through the pressure discharge line 62 while contacting the automatic valve packing 137 and is discharged to the outside of the automatic valve unit 50.

As shown in FIGS. 1 to 5, the main body 140 hinged to the upper case part 10 has an inner space into which the inner cylinder 30 is inserted, and the lower heater unit 150 for heating the inner cylinder 30. ) Is installed inside the main body 140.

Body 140 according to an embodiment includes a body housing 141, the base housing 142 and the opening and closing button portion 143. The base housing 142 is coupled to the lower side of the body housing 141, the opening and closing button portion 143 to restrict the rotation of the upper case portion 10 is rotatably installed in the body housing 141.

The main body 140 and the upper case part 10 are connected by the elastic hinge part 147, and the cover case 148 surrounding the outer side of the elastic hinge part 147 is fixed to the main body 140.

The lower heater 150 is installed below the inner cylinder 30 to dissipate heat to the upper side where the inner cylinder 30 is located.

The lower heater unit 150 according to the embodiment, the disk-shaped lower heat transfer portion 152 for supporting the lower side of the inner cylinder 30, the lower heater bracket 154 fixed to the lower side of the lower heat transfer portion 152. And a lower heater 156 fixed to the lower heater bracket 154.

The lower heater 156 is installed inside the lower heater bracket 154 formed in a tubular shape, and the lower heater bracket 154 is fixed to the lower side of the lower heat transfer part 152 so that the heat generated from the lower heater 156 is The lower heat transfer unit 152 is transferred to the inner cylinder 30.

The outer cylinder 170 is installed to support the lower heater unit 150 and surround the outer side of the inner cylinder 30.

A plurality of exhaust holes 172 are installed at the bottom surface of the outer cylinder 170, and an air discharge unit 160 for discharging air through the exhaust holes 172 is installed at the bottom surface of the outer cylinder 170. The air exhaust unit 160 installed below the outer cylinder 170 automatically opens and closes the exhaust hole 172 according to the temperature of the air between the inner cylinder 30 and the outer cylinder 170, that is, the temperature of the heat storage space. Various types of exhaust systems can be used within the technical concept.

The air discharge unit 160 according to an embodiment is fixed to the lower portion of the outer cylinder 170 and extends from the bimetal body 162 and the bimetal body 162 in which one side or both sides are bent upward by the temperature rise, and exhaust holes. And a shielding protrusion 164 that opens and closes 172. The bimetal body 162 is bent upward when the temperature is higher than the set temperature, the center of the bimetal body 162 is fixed to the bottom surface of the outer cylinder 170. The shielding protrusion 164 connected to both sides of the bimetal body 162 opens and closes the exhaust hole 172 provided in the outer cylinder 170.

The support packing part 145 provided in the shape surrounding the upper edge of the outer cylinder 170 shields the upper space between the inner cylinder 30 and the outer cylinder 170.

The support packing part 145 may be formed in various shapes within a technical concept of blocking heated air between the inner cylinder 30 and the outer cylinder 170 from being discharged to the upper side of the inner cylinder 30 and the outer cylinder 170. Can be.

5 to 9, various types of sensors may be used in the technical sensor for detecting the operation of the opening / closing button unit 143 for releasing the lock of the upper case part 10. have.

The opening and closing sensor unit 180 according to an embodiment of the present invention detects the movement of the switch protrusion 182 and the switch protrusion 182 that is pressed by the rotation of the opening and closing button unit 143, and transmits a measurement value to the controller. Switch 184.

The opening and closing button protrusion 144 protrudes inside the opening / closing button part 143 which is caught by the upper case part 10 and restricts the rotation of the upper case part 10. When rotating the opening and closing button portion 143 to open the upper case portion 10, the opening and closing button projection 144 of the opening and closing button portion 143 is projected to the upper side of the main body 140, the switch projection 182 Pressurize.

The switch protrusion 182 is installed in the movement path of the opening / closing button protrusion 144 and moves inwardly of the main body 140 while contacting the opening / closing button protrusion 144.

The first switch 184 installed in contact with the switch protrusion 182 detects the downward movement of the switch protrusion 182 and transmits the measured value to the controller.

The opening and closing driving unit 190 may be used in a variety of driving devices within the technical concept of generating the power to lift the upper case 10 to the upper side receiving the measurement value of the opening and closing sensor unit 180. Opening and closing drive unit 190 according to an embodiment is a drive motor 192 for generating a rotational power by the supply of electricity, one side of the drive motor 192 is provided with a drive shaft 194 for outputting the rotational power.

The driving motor 192 is installed in a fixed state inside the support housing 196 protruding to the upper side of the base housing 142, and the transmission part 200 and the moving bar 209 on the upper side of the opening / closing driving part 190. Is installed.

The transmission unit 200 may be formed in various shapes within the technical concept of lifting the upper case part 10 by receiving power from the opening and closing driving unit 190. Transmission unit 200 according to an embodiment, the height adjustment housing 202 and the inclined surface 204 is provided with an inclined surface 204 is rotated by the operation of the opening and closing drive 190 and gradually increases in height along the upper circumference It is provided with a support protrusion 208 in contact with the) and is located on the upper side of the height adjustment housing 202 and penetrates the moving body portion 206 and the movable body portion 206 which is moved up and down by the rotation of the height adjustment housing 202. It is installed in a shape that includes a moving bar 209 is moved with the moving body portion 206 to press the upper case portion 10 upward.

The drive shaft 194 of the opening and closing drive unit 190 is inserted and fixed inside the height adjustment housing 202, and the height adjustment housing 202 is rotated by the rotation of the drive shaft 194. An inclined surface 204 gradually increasing in height is installed at an upper edge of the height adjustment housing 202.

The moving body 206 is installed in contact with the inclined surface 204, and the moving body 206 is vertically moved in accordance with the rotation of the height adjusting unit. The moving body portion 206 includes a body portion 207 and the support protrusion 208. The moving bar 209 is vertically installed at the center of the body 207, and the moving bar 209 is moved up and down together with the body 207.

Supporting protrusions 208 protrude from both lower sides of the body portion 207, and the height of the inclined surface 204 supporting the support protrusions 208 changes according to the rotation of the height adjusting housing 202. Up and down movement of the moving body portion 206 is made.

The moving bar 209 is installed to protrude upward from the body housing 141 of the main body 140, and is located inside the body housing 141 when the upper case part 10 shields the upper side of the inner cylinder 30. When the upper case part 10 is opened, the upper case part 10 protrudes upward and lifts the upper case part 10 upward.

3, 10 and 11, the detection switch unit 210 for measuring whether the inner cylinder 30 is mounted is installed in the main body 140, the inner cylinder 30 is seated on the main body 140. When it is in contact with the upper circumference of the inner cylinder 30 is transmitted to the control unit (not shown) to be operated by the pressure of the inner cylinder 30 to operate.

Sensing switch unit 210 according to an embodiment, and the lifting member 212 is projected to the upper side of the main body 140, the inner cylinder 30 is seated and moved downward while contacting the upper circumference of the inner cylinder 30, The second switch 214 detects the movement of the member 212 and transmits the measured value to the controller.

The elevating member 212 is installed in a state protruding upward of the main body 140, and when pressed into the inner cylinder 30 to move inside the main body 140, the second elevating member 212 is installed in contact with the elevating member 212. The switch 214 is operated to transmit the seating of the inner cylinder 30 to the controller.

Hereinafter, with reference to the accompanying drawings will be described in detail the operating state of the electric rice cooker 1 according to an embodiment of the present invention.

When the upper heater 25 of the upper heater unit 20 and the lower heater 156 of the lower heater unit 150 are operated to generate heat, a cooking object inside the inner cylinder 30 is heated.

When the cooking of the cooking object is completed or when the pressure is discharged as necessary during cooking, the automatic valve unit 50 is operated to discharge the pressure formed inside the inner cylinder 30.

When the automatic valve motor 67 is operated to rotate the drive gear 68, the rotation control unit 70 rotates while the driven gear 72 engaged with the drive gear 68 rotates.

When the height adjustment inclination protrusion 76 rotates by the rotation of the rotation control part 70, the height projection 84 installed in contact with the height adjustment inclination protrusion 76 moves up and down.

When the moving part 80 moves upward or downward together with the height projection 84, the elastic force of the second pressing member 114 provided between the moving part 80 and the support plate 102 of the pressing member 100 is variable. do.

Since the elastic force of the second pressurizing member 114 for pressing the upper sealing member 120 downward is variable, the high pressure fluid inside the inner cylinder 30 moves upward through the pressure discharge hole 134 to close the upper sealing member. The member 120 is pushed upward and discharged to the outside of the rice cooker 1 through the pressure discharge pipe 62.

When a part of the fluid discharged to the outside moves upward along the vertical bar 104, it is discharged to the outside of the rice cooker 1 through the center portion of the rotation control unit (70).

After the set pressure or more is discharged, since the upper sealing member 120 pressed by the elastic force of the elastic portion 110 maintains the contact with the lower sealing member 130, the upper sealing member 120 and the lower sealing member. Blocks the flow of air moving between the (130).

Since the vacuum packing part 40 is installed between the inner cylinder 30 and the upper heater part 20, the inside of the inner cylinder 30 can be kept in a low vacuum state, and long-term storage of a cooking object is possible.

Since the heat keeping space of the air is formed between the inner cylinder 30 and the outer cylinder 170, uniform heating of the inner cylinder 30 is possible, and the temperature of the air formed between the inner cylinder 30 and the outer cylinder 170 is a set temperature. As it rises, the air discharge unit 160 is operated to discharge the heated air to the outside of the rice cooker (1).

Since the support packing part 145 is installed between the inner cylinder 30 and the outer cylinder 170, the heated air between the inner cylinder 30 and the outer cylinder 170 can be prevented from leaking to the outside.

When the automatic valve part 50 is operated to rotate the opening / closing button part 143 to open the upper case part 10 while the low pressure state of the air inside the inner cylinder 30 is relaxed, the opening / closing button part The opening and closing button protrusion 144 provided at 143 presses the switch protrusion 182 to operate the first switch 184.

When the opening and closing driving unit 190 is operated by the operation of the first switch 184 and the driving shaft 194 is rotated, the height adjusting housing 202 is rotated together with the driving shaft 194.

When the support protrusion 208 whose lower portion is supported by the inclined surface 204 of the height adjustment housing 202 moves upward, the moving bar 209 moves upward with the moving body 206 and the main body 140. Protrudes to the upper side of the upper case portion 10 to raise the set height.

Although the internal pressure of the inner cylinder 30 is lower than atmospheric pressure even when the automatic valve unit 50 is operated, difficulty in opening the upper case 10 occurs, but the moving bar 209 moves the upper case 10 upward. When the upper case part 10 is opened together with the pressing operation or after the operation of the moving bar 209, the opening of the upper case part 10 is easily performed.

As described above, according to the present invention, when the opening and closing button 143 is rotated to lift the upper case 10 of the low-pressure electric rice cooker 1, the rotation of the opening and closing button 143 is detected. The opening and closing driving unit 190 is operated by the opening and closing sensor unit 180 to push up the upper case part 10 to the upper side, so that the opening operation of the upper case part 10 may be easily performed.

In addition, the present invention, it is possible to automatically adjust the vapor pressure discharged by the operation of the drive unit 65, thereby providing a variety of cooking conditions according to the user's preferences or types of food.

In addition, in storing the food in the electric rice cooker (1), the inside of the electric rice cooker (1) while at the same time blocking the flow of air inside and outside the electric rice cooker (1) through the automatic valve unit 50 for discharging steam Since the air maintains a low pressure low vacuum formed by cooling in a high temperature state, it is possible to improve food storage.

Hereinafter, an electric rice cooker according to another embodiment of the present invention will be described with reference to the accompanying drawings.

17 to 27, the electric rice cooker according to another embodiment of the present invention, the main body 402, the vacuum packing part 411, the support packing part 416, the cover member 407, the steam discharge unit ( 430 and the vacuum release unit 440.

The main body 402 constitutes the outer shape of the rice cooker 1 according to the present invention, and the inner cylinder 401 is installed therein.

The main body 402 is preferably formed in a quadrangle shape in which the four corners are rounded when viewed from above.

Of course, the body 402 may be circular, oval or other various forms as viewed from above.

The inner cylinder 401 is preferably made of a cylindrical shape so that food is accommodated. Therefore, the main body 402 is formed with a circular space (not shown) for accommodating the inner cylinder 401.

The bottom of the circular space portion of the main body 402 is preferably formed with a lower heat generating portion (not shown) for supplying heat to the inner cylinder (401).

The main body 402 may be provided with an outer cylinder 428 at a portion that accommodates the inner cylinder 401. The outer cylinder 28 serves to insulate the entire inner cylinder 401 to keep the heat collected in the inner cylinder 401 without going out.

The outer edge of the inner cylinder 401 is formed with an upper inclined surface 403 which is formed to be inclined while gradually opening to the outside toward the upper side.

The upper inclined surface 403 may be formed in various shapes as necessary, such as a shape rolled outward.

The upper heat transfer plate 405 is covered to the upper side of the inner cylinder 401 is configured to block the discharge of steam to the appropriate pressure during cooking to allow the food contained in the inner cylinder 401 to be cooked.

19, 22 and 23, the upper heat transfer plate 405 is provided with a cover member 407 may be provided in a steam discharge configuration, pressure release configuration and the like in a suitable position.

Electric rice cooker according to the present invention, including the upper, lower heating heater configuration, bimetallic configuration, etc. applied to the "electric rice cooker" (Application No .: 10-2012-0157766) filed by the Applicant dated 2012, 12, 21 It can be configured to apply various configurations as it is.

In this case, as illustrated in FIGS. 19 and 20, an upper heater 419 for upper heating may be provided on the upper heat transfer plate 405.

The upper heat transfer plate 405 may be assembled with the mounting plate 407 provided on the upper side by the upper heater bracket.

The upper heater 428 may be coupled to the bottom of the mounting plate 404.

The packing part 410 is inserted around the upper heat transfer plate 405 and is in contact with the upper inclined surface 403 of the inner cylinder 401 to seal the vacuum in the vacuum state 411 and the inner cylinder 401. A support packing part 416 for supporting the bottom of the upper inclined surface (403) of the c) to perform internal heat discharge blocking and sealing.

Packing portion 410 is preferably formed in a circular ring shape, as in one example according to the present invention.

The vacuum packing part 411 includes a packing body 412 having an inner groove 413 inserted around the upper heat transfer plate 405 and an upper side of the packing body 412, and is provided by the mounting plate 404. The first wing member 414 that is pressed while covering the upper peripheral surface of the upper heat transfer plate 405 and the second extending to the lower side of the packing body 412 to be in close contact with the upper side of the upper inclined surface 403 of the inner cylinder 401. A wing member 415 is included.

At least one sealing protrusion 427 in contact with the upper surface of the upper inclined surface 403 may protrude from the peripheral surface of the second wing member 415.

The support packing portion 416 is supported by an outer cylinder 428 provided on the outside of the inner cylinder 401, the support body 417 is provided on the lower side of the fixed rib 426 extending from the main body 402, It extends from the support body 417 to the upper edge and is in close contact with the bottom of the upper inclined surface 403 includes a locking support member 418 to perform the heat shield and sealing.

The support body 417 is inserted into and fixed by the coupling member 425 which penetrates through the outer cylinder 28 and is fixed to the fixed rib 426.

Coupling member 425 is preferably to apply a screw or bolt.

The inner cylinder 401 is preferably seated for cooking or the power on-off state is controlled by the detection switch unit 420 when detached for washing.

Sensing switch unit 420 is preferably provided in the main body 402 around the hinge (unsigned) of the lid assembly including the upper heat transfer plate 405, the mounting plate 404, the case 408 and the upper housing 409. Do. Of course, the installation position of the detection switch unit 420 is not limited.

Referring to FIG. 21 (a), when the inner cylinder 401 is inserted into the outer cylinder 428 of the main body 402 for cooking, the upper inclined surface 403 of the inner cylinder 401 moves downward to detect the switch. The unit 420 is operated to be turned on.

In addition, referring to FIG. 21B, when the inner cylinder 401 is separated from the outer cylinder 428 of the main body 402 for cleaning, the upper inclined surface 403 of the inner cylinder 401 moves upward to sense the switch. The unit 420 is turned off.

Therefore, since the electric rice cooker is configured to supply power only when the inner cylinder 401 is seated, a safety accident due to electric shock can be prevented in advance.

The sensing switch unit 420 includes a second switch 421 installed in the main body 402, a lever member 422 rotatably installed on the upper side of the switch body 421, and an end of the lever member 422. Is coupled to the elevating member 423 and the second switch 421, which is lowered in contact with or separated from the upper inclined surface 403 of the inner cylinder 401, the lever by the elevating of the elevating member 423 And an actuation button 424 that is turned on and off by the rotation of the member 422.

The lever member 422 is made of a metal plate, and is rotatably installed by a hinge at the corner of the second switch 421.

The operation button 424 is connected to the inside of the second switch 421 is configured to be turned on when descending, and lifted off.

The operation button 424 may be raised and lowered by a spring (not shown).

The cover member 407 is installed on the mounting plate 404 provided on the upper heat transfer plate 405.

The cover member 407 may be inserted into the case 408 provided above the mounting plate 404.

The cover member 407 is made of a plastic injection molding, and may be coupled by a fastening member 470 that is fastened to the mounting plate 404 by passing through the lower edge of the cover member 407. At this time, the number of fastening members is not limited. In the drawings, four fastening members 470 are provided.

In addition, the cover member 407 may be fixed to the mounting plate 404 in a variety of fixing,

The steam discharge part 430 is provided inside the cover member 407, and discharges steam by the high pressure of the inner cylinder 401 to maintain the set pressure.

The steam discharge part 430 is formed in the cover member 407, and is formed in the flow space part 432 and the upper heat transfer plate 405 which discharge the steam inside the inner cylinder 401 to the steam vapor discharge hole 433. It is installed in the installation hole 406, seated on the side of the lower sealing member 434, the vapor passage 435 is formed in the center and installed to flow in the flow space 432, the movement when the internal pressure is above the set value, It includes an upper sealing member 436 for discharging the steam through.

The vapor discharge hole 433 is connected to the side of the upper sealing member 436 is formed to penetrate upwards. Therefore, when the upper sealing member 436 is operated up and down by steam discharge, the steam is facilitated because it is not interfered by the upper sealing member 436 when the steam moves through the steam discharge hole 433.

The lower sealing member 434 is coupled in a state where the groove portion formed at the periphery is pressed into the installation hole 406 of the upper heat transfer plate 405 and prevented from escaping upward and downward.

The upper sealing member 436 has a contact portion 436a which is formed to be curved in the form of a rubber suction plate in contact with the seating portion of the lower sealing member 434, a support portion 436b extending perpendicular to the center of the contact portion 436a, It includes a weight portion 436c formed in a columnar shape on the upper side of the support portion 436b to provide a load.

The weight part 436c may be formed in a polygonal column, such as a cylinder, a square column, or a hexagonal column. In this figure, the weight part 436c is shown by the cylinder.

The upper side of the upper sealing member 436 may be provided with an auxiliary weight member 438 protruding to the outside through the flow space 432 to control the steam discharge through the weight during the vertical operation.

The upper sealing member 436 has a shape including one or more protrusions and internal grooves by modifying the shape of the contact portion 436a so that the auxiliary weight member 438 does not escape during movement in conjunction with the auxiliary weight member 438. can do.

The auxiliary weight member 438 is shown in the form of a long bristles, the upper and lower length, it may be formed in various forms in some cases.

The auxiliary weight member 438 may form a coupling part including one or more protrusions on the lower surface of the auxiliary weight member 438 so as to surround the upper sealing member 436 and be inserted into and fitted with the upper sealing member.

As shown in FIG. 27, the auxiliary weight member 438 moves upward and downward to discharge steam, and further includes a spring 439 to move upward and return to its original position and effectively prevent the outflow of steam during vapor discharge. Can be.

In addition, by installing the spring support 437 instead of the auxiliary weight member 438, the upper sealing member 436 can be interlocked so as not to be effectively separated during the movement.

Inner cylinder 401, when the food is stored in the state that the food is stored and the upper heat transfer plate 405 closed, the air is expanded in the inner cylinder 401 is contracted by the shrinkage of the volume is formed in the inner cylinder 401 vacuum do.

At this time, the contact portion 436a of the upper sealing member 436 is pressed downward from the upper seating portion of the lower sealing member 434 to block the steam passage 435 to block external air from entering.

As such, when the food stored in the main body 402 is to be eaten later, separately from the steam discharge part 430, the upper heat transfer plate 405 should be opened after the vacuum formed therein is released. If the vacuum is not released, the upper heat transfer plate 405 cannot be separated from the inner cylinder 401.

Therefore, the vacuum release part 440 is necessary for releasing the vacuum in the inner cylinder 401 of the main body 402.

The vacuum releasing unit 440 is disposed on the cover member 407 adjacent to the vapor discharge member 430 and releases a vacuum formed in the inner cylinder 401 of the main body 402 while the food is cooled.

Here, the term "vacuum" applied in the present invention refers to a low vacuum or low pressure state close to a vacuum, for example, the term "vacuum" despite being used in a low pressure or low vacuum state, such as a vacuum cleaner. It is the same as doing

22 to 26, the vacuum releasing unit 440 according to the present invention is configured to release the vacuum state by the rotation method.

First, the vacuum releasing unit 440 according to an example is formed in the cover member 407, the installation space portion 441 and the installation space portion 441 through which the air is introduced through the air inlet hole 443, Connecting hole 448 is inserted into the air inlet hole 443 is connected to the through hole 445 is formed in the center, the sealing member 444 is provided with a seating groove 446 on the upper side, It includes a sealing member 450 is rotatably seated in the groove 446, the movement hole 458 is formed in communication with the connection hole 448 or the communication is blocked through the rotation.

The installation space 441 is opened in a cylindrical shape to the lower side of the cover member 407.

The cover member 407 is provided with an air inlet hole 443 communicated to the outside through one side or both sides of the installation space portion 441.

The cover member 407 is provided with a connection hole 407a which communicates with the outside through the upper side of the installation space 441.

The sealing member 444 is preferably inserted into the fitting portion 447 in the through hole 405a of the upper heat transfer plate 405.

That is, the sealing member 444 is formed by the fitting portion 447 so that the lower side of the sealing member 444 is stepped so that the lower portion of the sealing member 444 is fitted and simultaneously contacted and supported on the upper surface of the upper heat transfer plate 405. It is assembled reliably in a state where departure is prevented.

The sealing member 450 has a moving hole 458 is formed, the ball member 452 to be seated in the seating groove 446 and the connection provided on the upper side of the ball member 452, formed in the cover member 407 And a support shaft 454 connected to the outside through the hole 407a, and an operating lever 456 provided at the end of the support shaft 454 to rotate the ball member 452.

Ball member 452 is preferably a spherical ball.

Support shaft 454 is preferably provided integrally or detachably on one side of the ball member 452.

When the support shaft 454 is detachably provided at the ball member 452, the support shaft 454 may be detachably mounted by a screw method or a press-fit method.

In the drawings of the present invention may be configured to form an upper end of the support shaft 454 in the form of a square pillar to be coupled to the groove portion of the operation lever 456 by a locking pressing method (not shown). Since such a catch-fit method is a general configuration, detailed description thereof will be omitted.

The actuating lever 456 may be integrally or detachably coupled with the support shaft 454.

The actuating lever 456 rotates the ball member 462 through the support shaft 454 such that the left and right moving holes 459 of the moving hole 458 communicate with or communicate with the connection hole 448 of the sealing member 444. To be blocked.

The moving hole 458 communicates from the lower part of the ball member 452 to the center part, and is connected to the through hole 445 of the sealing member 444, and the one or both sides of the moving hole 457. It includes a left and right hole 459 that is bent to be communicated to the outside, and formed or not matched to the connection hole 448 by the rotation.

The moving hole 458 is formed in a T or L shape. That is, when the connecting hole 448 of the sealing member 444 is formed on both sides, it is formed in a T-shape, and when the connecting hole 448 of the sealing member 444 is formed on one side, it is formed in a L shape .

The left and right moving holes 459 are formed below the center of the ball member 452.

At this time, the connection hole 448 is preferably formed in the lateral direction (left and right directions) in accordance with the left and right moving hole 459.

Two air inlet holes 443 may be formed in accordance with the left and right moving holes 459, but only one may be provided as necessary, and may be separately connected to the communication holes 409a. In the drawings of the present invention to be shown in a state in which one inlet hole 443 is formed.

The installation space portion 441 is formed with a pressing groove for pressing the upper curved surface of the ball member 452 and the upper surface of the sealing member 444.

The pressing groove portion is inserted into the fastening member 470 through the through-hole and the mounting plate 404 formed in the four corners of the cover member 407, the cover member 407 is moved to the lower side, the ball member 452 By pressing the upper side of the upper curved surface of the sealing member 444 can be assembled in a state in which the contact between the sealing member 444 and the ball member 452 maintains the sealing.

The handle display unit 455 is formed on the upper side of the operating lever 456 and may be configured to indicate a vacuum holding state and a vacuum releasing state.

Looking at the vacuum holding state with reference to FIG. 24, when holding the handle display unit 455 and rotating the operation lever 456 to move the handle display unit 455 to the vacuum maintenance state, the left and right moving holes of the ball member 452 ( 459 is not in connection with the connecting hole 448 of the sealing member 444, the air flowing into the air inlet hole 443 is blocked by the ball member 452 at the connecting hole 448, I can't move.

Therefore, the inside of the main body 402 maintains a vacuum state.

Looking at the vacuum release state with reference to Figure 25, holding the handle display unit 455, the operating lever 456 is rotated by the handle display unit 455 to move to the vacuum release state, the left and right moving hole of the ball member 452 ( 459 is in a state of being connected to the connection hole 448 of the sealing member 444, so that the air flowing into the air inlet hole 443 is connected to the hole 448, the left and right moving hole 459 and the through hole 445 It is introduced into the main body 402 via the vacuum is released.

Accordingly, the user hinges the lid assembly including the upper heat transfer plate 405, the mounting plate 404, the cover member 407, the case 408, and the upper housing 409 from the inner cylinder 401 of the main body 402. (Not shown) can be opened easily and effortlessly.

A seating groove 407b is formed at an upper edge of the cover member 407.

The seating groove 407b may be provided with an O-ring member 80 inserted into the case 408.

have.

The o-ring member 82 is configured to seal the periphery of the connection hole 407a of the cover member 407, and forms a through hole 482 in communication with the connection hole 407a.

On the other hand, the upper housing 409 is further provided on the upper side of the case 408.

The upper housing 409 may be marked with the letters 'vacuum common paper' and 'vacuum release' to indicate the rotational position of the handle display unit 455 of the operation lever 456.

The upper housing 409 may be provided with a plurality of communication holes 409a for guiding the vapor discharged through the connection hole 407a of the cover member 407 and the through hole 482 of the O-ring member 480 to the outside. .

The communication hole 409a may be formed in the shape of a flower in an oval shape in a round portion of the upper housing 409.

Of course, the communication hole 409a may be formed in various shapes as necessary.

Referring to FIG. 27, the communication hole 409a may be formed separately in the air inlet hole 443 and the vapor discharge hole 433, respectively. The communication hole 409a formed in this way and connected to the steam discharge hole 433 is used for discharging steam when the internal steam reaches a pressure higher than the set pressure, and the communication hole 409a connected to the air inlet hole 443 operates. It is used to introduce air by the rotation of the lever 456. By separating the steam discharge hole (433) and the air inlet hole (443) is connected to each communication hole (409a) it is possible to exclude the possibility that the air discharged or introduced to move smoothly and interfere with each other.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

Claims

Upper case portion;

An upper heater positioned below the upper case part and dissipating heat downward;

An inner cylinder located below the upper heater and containing a cooking object;

An upper heat transfer plate facing the inner tube and positioned below the upper heater;

The main body constituting the outer appearance of the rice cooker, the inner cylinder is installed inside;

And a vacuum packing unit installed along an edge of the upper heat exchanger plate facing the inner cylinder and blocking a flow of air moving between the upper heat transfer plate and the inner cylinder.
The method of claim 1,

An automatic valve unit communicating with the inner cylinder and operated by a rotational power of a motor to adjust a pressing force, and to maintain a closed state after discharging the pressure formed between the upper heater and the inner cylinder;

And an upper temperature sensor installed at the upper case part or the upper heat transfer plate and measuring a temperature of air heated by the operation of the upper heater or the upper heater.
The method of claim 2,

A fixing plate fixed to the upper case part; And

Further comprising: an upper heater bracket located on the lower portion of the fixing plate,

The upper heater is fixed to the inside of the upper heater bracket to generate heat, the upper heat transfer plate is characterized in that for transferring the heat moving to the lower side through the upper heater bracket to the inside of the inner cylinder.
The method of claim 2,

The automatic valve unit is fixed to the fixed plate, the valve case having a first mounting portion and the second mounting portion;

A driving part fixed to the inside of the first mounting part to supply rotational power;

A rotation control unit which is rotated in the second mounting unit by receiving power of the driving unit and has a height adjustment inclination protrusion gradually increasing inclinedly protruding from the inside thereof;

A moving part having a height protrusion contacting the height adjusting inclination protrusion and moved up and down by rotation of the height adjusting inclination protrusion;

A moving case part installed in a shape surrounding the lower part of the moving part and guiding vertical movement of the moving part;

A pressing member having a support plate positioned between the moving part and the moving case part, and a vertical bar extending from the supporting plate and protruding upward of the moving part;

An elastic portion elastically pressurizing the pressing member downward, the elastic portion being variable by the rotation of the rotation control unit;

An upper sealing member connected to a lower side of the moving case and provided with a first sealing plate at a lower side thereof; And

Located in the lower side of the upper sealing member, the lower sealing member is provided with a pressure discharge hole in communication with the inner side of the inner; electric rice cooker comprising a.
The method of claim 4, wherein

The valve case may include a first case having the first mounting portion and the second mounting portion; And

It is coupled to the lower portion of the first case, the upper sealing member is provided with a pressure discharge pipe for guiding the discharged fluid to the outside of the upper case portion to the upper side, inserted into the anti-rotation hole provided in the moving case portion And a second case having an anti-rotation protrusion to restrict rotation of the moving case part.

The first mounting part may include a first mounting surface defining a space in which the driving part is located inside; And

And a heat dissipation protrusion protruding from the first mounting surface to support the driving unit, and forming a moving passage of air between the first mounting surface and the driving unit.
The method of claim 4, wherein

The driving unit may include a motor fixed to the first mounting unit; And

An electric rice cooker comprising: a drive gear rotating to receive the power of the motor.
The method of claim 6,

The rotation control unit, driven gear meshed with the drive gear to return; And

An electric rice cooker comprising: a cylindrical rotating control body extending to the lower side of the driven gear.
The method of claim 7, wherein

The moving part is inserted into the inside of the rotation control body and moved up and down along the moving case part, in the center; a moving base through which the vertical bar;

The elevating projection is characterized in that the rice cooker is installed on both sides of the moving base around the vertical bar.
The method of claim 4, wherein

The elastic part, the first pressing member is supported by the upper side and the lower side is supported on the rotation control unit; And

And a second pressurizing member positioned outside the first pressurizing member and having an upper side supported by the moving part and a lower side supported by the support plate.
The method of claim 2,

It is installed on the main body hinged to the upper case portion, when the inner cylinder is seated in the main body while contacting the upper circumference of the inner cylinder while being pressed by the load of the inner cylinder; Rice cooker.
The method of claim 10,

The sensing switch unit, the lifting member is projected to the upper side of the main body on which the inner cylinder is seated, the lifting member is moved downward while contacting the upper circumference of the inner cylinder; And

And a second switch for detecting a movement of the elevating member and transmitting a measured value to a control unit.
The method of claim 3, wherein

An electric rice cooker further comprising; an internal temperature measuring sensor for measuring an inner space temperature of the inner cylinder.
The method of claim 2,

The vacuum packing unit is installed along the circumference of the upper heat transfer plate, the packing body having an inner groove into which the edge of the upper heat transfer plate is drawn;

A first wing member extending toward an upper side of the packing body and installed in contact with an outer side of the upper heat transfer plate; And

And a second wing member extending downward of the packing body and in contact with the inner surface of the inner cylinder.
The method of claim 13,

The second wing member includes: a second wing body extending from the packing body and positioned between the upper heat transfer plate and the inner cylinder; And

And a plurality of sealing protrusions protruding from the side of the second wing body facing the inner cylinder and contacting the inner surface of the inner cylinder.
The method of claim 2,

A lower heater part disposed below the inner cylinder and dissipating heat upward; And

An electric rice cooker further comprising; a lower temperature sensor for measuring the temperature of the lower heater.
The method of claim 15,

And an outer cylinder supporting the lower heater and installed in a shape surrounding the outer side of the inner cylinder.
The method of claim 16,

The air cooker is installed on the lower side of the outer cylinder, the air discharge unit for automatically opening and closing the exhaust hole in accordance with the temperature of the air between the inner cylinder and the outer cylinder.
The method of claim 17,

The air discharge unit, the bimetal body is fixed to the lower portion of the outer cylinder, one side or both sides are bent upward by the temperature rise; And

And a shielding protrusion extending from the bimetal body to open and close the exhaust hole.
The method of claim 16,

The rice cooker is installed in a shape surrounding the upper edge of the outer cylinder, the support packing portion for shielding the upper space between the inner cylinder and the outer cylinder.
The method of claim 2,

An opening / closing sensor unit for detecting an operation of the opening / closing button unit for releasing the upper case part lock;

An opening and closing driver configured to generate power by receiving the measured value of the opening and closing sensor; And

An electric rice cooker, further comprising: a transmission part for receiving the power of the opening and closing driving part to lift the upper case part.
The method of claim 20,

The opening and closing sensor unit, the switch protrusion is pressed by the rotation of the opening and closing button portion; And

And a first switch which senses a movement of the switch protrusion and transmits a measurement value to a control unit.
The method of claim 20,

The transmission unit, the height adjustment housing is rotated by the operation of the opening and closing drive, the inclined surface is gradually increased in height along the upper circumference;

A moving body part provided with a support protrusion in contact with the inclined surface and positioned above the height adjustment housing and vertically moved by the rotation of the height adjustment housing; And

It is installed in a shape that penetrates the moving body, the moving bar is moved together with the moving body to press the upper case portion upward; electric rice cooker comprising a.
The method of claim 1,

A cover member installed on a mounting plate provided on the upper heat transfer plate;

A steam discharge part provided in the cover member and discharging steam by the steam pressure of the inner cylinder to maintain the set pressure; And

A vacuum release unit provided in the cover member adjacent to the vapor discharge unit, the upper sealing member seated on the upper side of the lower sealing member, and the vacuum being formed by decreasing the temperature of the food, and releasing the vacuum state formed inside the inner cylinder; Electric rice cooker comprising a.
The method of claim 23, wherein

An electric rice cooker, further comprising: a support packing part supporting the bottom of the upper inclined surface of the inner cylinder to prevent discharge of the lower heat and to seal the bottom surface.
The method of claim 23,

The vacuum packing unit, the packing body is formed with an inner groove is inserted around the upper heat transfer plate;

A first wing member extending toward an upper side of the packing body and being pressed by the mounting plate to cover a circumferential upper surface of the upper heat transfer plate; And

An electric rice cooker comprising a second wing member extending downward of the packing body and in close contact with an upper inclined surface of the inner cylinder.
The method of claim 24,

The support packing portion is supported by an outer cylinder provided on the outside of the inner cylinder, the support body provided on the lower side of the fixed rib extending from the main body; And

And a locking support member extending from the support body to the edge to be in close contact with the bottom surface of the upper inclined surface to block the discharge of the lower heat and to seal the support body. An electric rice cooker, characterized in that is inserted and fixed by.
The method of claim 23, wherein

When the inner cylinder is seated for cooking or separated for cleaning, the power on / off state is controlled by the detection switch unit, and the detection switch unit includes: a second switch installed in the main body;

A lever member rotatably installed at an upper side of the switch body;

An elevating member coupled to an end of the lever member, the elevating member being in contact with or separated from the inner cylinder; And

And an operation button provided on the second switch, the operation button turning on and off power by the lever member by the elevating member.
The method of claim 23, wherein

The upper side of the upper heating plate is provided with an upper heater for heating the upper, the upper heater is characterized in that coupled to the bottom surface of the mounting plate.
The method of claim 23, wherein

The steam discharge portion, the flow space portion is formed in the cover member for discharging the steam in the inner cylinder to the steam discharge hole;

A lower sealing member installed at an installation hole formed in the upper heat transfer plate and having a vapor passage formed at a center thereof; And

And an upper sealing member seated on an upper side of the lower sealing member so as to be flowable to the flow space and having an internal pressure greater than or equal to a predetermined value, discharging steam through vertical movement.
The method of claim 29,

The steam discharge hole is connected to the lateral direction of the upper sealing member electric rice cooker characterized in that penetrates to the upper side.
The method of claim 29,

The upper side of the upper sealing member is an electric rice cooker which is provided with an auxiliary weight member protruding to the outside through the flow space portion to control the steam discharge through the vertical movement.
The method of claim 29,

The upper sealing member is characterized in that the auxiliary weight member is inserted into the electric rice cooker comprising a shape including one or more protrusions and the inner groove.
The method of claim 29,

The upper side of the upper sealing member includes a spring for controlling the steam discharge through the spring elastic force and the electric rice cooker, characterized in that connected to the spring support in the flow space.
The method of claim 33,

The upper sealing member includes at least one protrusion and an inner groove so that a spring support can be inserted into and inserted into the upper sealing member, and at least one protrusion and an inner groove can be coupled to the upper sealing member under the spring support. Electric rice cooker characterized in that the coupling portion further comprises a.
The method of claim 23, wherein

The vacuum release unit is formed in the cover member, the installation space portion to which the outside air flows in the air inlet hole;

A sealing member inserted into the installation space and connected to the air inlet hole, a through hole communicating downwardly, and a seating groove provided at an upper side thereof; And

And a sealing member rotatably seated in the seating recess and having a moving hole communicating with the connection hole or blocking communication with the connection hole through the rotation.
The method of claim 35, wherein

The sealing member may include: a ball member having the moving hole formed therein and seated in the seating groove;

A support shaft provided on an upper side of the ball member and connected to the outside through a connection hole formed in the cover member; And

Is provided at the end of the support shaft, characterized in that it comprises an operating lever for rotating the ball member.
The method of claim 36,

The moving hole, Shanghai pupil is in communication with the lower portion of the ball member and connected to the through hole of the sealing member; And

An electric rice cooker comprising a left and right moving hole communicated with the outside from one side or both sides of the shanghai pupil and formed to coincide with or inconsistent with the connecting hole by rotating the upper operating lever.
The method of claim 37,

The left and right moving holes are formed in the direction below the center of the ball member, the installation space portion of the electric rice cooker characterized in that the pressing groove for pressing the upper curved surface of the ball member and the upper surface of the sealing member.
The method of claim 23, wherein

The electric rice cooker further comprises an opening and closing portion to automatically open and close according to the temperature during heating and warming through a bimetal member mounted on the bottom outer cylinder bottom.