CN101884497A - Micro-pressure electric rice cooker and control method thereof - Google Patents

Micro-pressure electric rice cooker and control method thereof Download PDF

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Publication number
CN101884497A
CN101884497A CN2009100395043A CN200910039504A CN101884497A CN 101884497 A CN101884497 A CN 101884497A CN 2009100395043 A CN2009100395043 A CN 2009100395043A CN 200910039504 A CN200910039504 A CN 200910039504A CN 101884497 A CN101884497 A CN 101884497A
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Prior art keywords
pressure
micro
electric
switch
rice cooker
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CN101884497B (en
Inventor
吴伟宾
肖正涛
杨勇
闫梅梅
吕文钊
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Publication of CN101884497B publication Critical patent/CN101884497B/en
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Abstract

The invention provides a micro-pressure electric rice cooker and a control method thereof, which are used for solving the control problem of the micro-pressure electric rice cooker when cooking foods in different volumes. The micro-pressure electric rice cooker comprises a cover, a housing, an inner pot, an electric heating device, a power control device and a control circuit, wherein the housing comprises a chassis, and the inner pot is positioned above the chassis in an inner cavity of the housing; the electric heating device is electrically connected with the control circuit, and the electric heating device is positioned outside the inner pot in the inner cavity of the housing or below the inner pot on the chassis; the power control device comprises a pressure switch; the control circuit comprises a heating circuit, a thermal insulation circuit and a timer circuit; and the heating circuit and the thermal insulation circuit are connected in series and then connected with a normally closed contact of the pressure switch in series for being connected into a power supply. The control method of the micro-pressure electric rice cooker is as follows: when an electric heating plate R0 is heated to a certain degree, the pressure switch K1 acts for triggering the working of a timer switch, and the timer switch TK1 works continuously till the rice cooking or the congee cooking or the soup cooking process is finished.

Description

Micro-pressure electric rice cooker and control method thereof
Technical field
The invention belongs to the small household appliances technical field, relate in particular to a kind of micro-pressure electric rice cooker and control method thereof.
Background technology
In the prior art, micro-pressure electric rice cooker is a kind of Pneumatic electrothermal stewing implement, and it belongs to electric heating cooking device for kitchen use, is the electric cooker product technology of utilizing steam power control temperature to work under normal pressure.It comprises: pot cover, interior pot, electric heater; Interior pot is arranged on the electric heater.It also comprises a power control unit, and this device comprises: fixed structure piece, switch, power transmission part, switch are wherein connected with electric heater and are inserted power supply.This Pneumatic electrothermal stewing implement can with the design that combines together of existing electric cooker structure, so it has vast potential for future development in the application of electric heating cooking device.But this Pneumatic electrothermal stewing implement does not have desirable control device and method as yet.
In the prior art, adopt timer that electric pressure cooking saucepan is controlled, generally be that pressure in pot is when reaching some values, timer picks up counting, when pressure during less than some values, timer stops timing, also is, the time that the timer meter is got is the time of pressure more than some values of electric pressure cooking saucepan, discrete adding up of the time of being read.Use the control device and the method for electric pressure cooking saucepan micro-pressure electric rice cooker is controlled, can't solve the not problem of isometric food of boiling.
Summary of the invention
The object of the present invention is to provide a kind of micro-pressure electric rice cooker and control method thereof, proposed a kind of new electric cooker control model, solved micro-pressure electric rice cooker in the boiling control problem during isometric food not.
The present invention is achieved through the following technical solutions:
Micro-pressure electric rice cooker includes: pot cover, housing, interior pot, electric heater unit, power control unit and control circuit; Described housing includes the chassis, and interior pot is arranged in the top on housing inner chamber chassis; Described electric heater unit and control circuit are electrically connected, and described electric heater unit is arranged in the outside of housing inner chamber pot or is positioned at the below of pot on the chassis; Wherein, described power control unit includes pressure switch; Described control circuit includes heater circuit, thermal circuit and timer switch circuit; Connect with described pressure switch normally-closed contact and insert power supply in described heater circuit and thermal circuit series connection back; Described timer switch circuit includes timer switch.
The control method of above-mentioned micro-pressure electric rice cooker, wherein, under electric heating plate is heated to a certain degree situation, the work of pressure switch action triggers timer switch, timer switch continues to work until always cooks or cooks congee or the end of Baoshang process, the control influence of the switch that no longer is stressed after the timer switch work; After timer switch makes zero, directly cut off the power supply of timer switch, make micro-pressure electric rice cooker directly enter keeping warm mode.
Beneficial effect of the present invention is as follows:
A kind of micro-pressure electric rice cooker of the present invention and control method thereof are because control circuit includes heater circuit, thermal circuit and timer circuit; Connect with described pressure switch normally-closed contact and insert power supply in heater circuit and thermal circuit series connection back.Therefore, the present invention has following technique effect:
1. proposed a kind of new electric cooker control model, solved micro-pressure electric rice cooker in the boiling control problem during isometric food not.
2. under electric cooker is heated to a certain degree situation, the work of pressure switch action triggers timer, timer continue to work until always cook cook congee the end of Baoshang process, the control influence of the switch that no longer is stressed after the timer work.
3. this circuit does not need micro computer to control, and adopts common reliable electronic element to combine, and has very big use and dissemination.
4. after timer switch makes zero, directly cut off the coil power of timer switch, two relays, make electric cooker directly enter keeping warm mode.
Description of drawings
Fig. 1 is the circuit diagram of micro-pressure electric rice cooker of the present invention.
The specific embodiment
Ask for an interview Fig. 1, the invention discloses micro-pressure electric rice cooker, include: pot cover, housing, interior pot, electric heater unit, power control unit and control circuit; Described housing includes the chassis, and interior pot is arranged in the top on housing inner chamber chassis; Described electric heater unit and control circuit are electrically connected, and described electric heater unit is arranged in the outside of housing inner chamber pot or is positioned at the below of pot on the chassis; Wherein, described power control unit includes pressure switch K1; Described control circuit includes heater circuit, thermal circuit and timer switch circuit; Connect with described pressure switch K1 normally-closed contact and insert power supply in described heater circuit and thermal circuit series connection back.
The physical circuit principle is as shown in Figure 1:
Described heater circuit includes electric heating plate R0, current-limiting resistance R1 and burner on light DX1, and is in parallel with electric heating plate R0 after current-limiting resistance R1 connects with burner on light DX1.
Described thermal circuit includes bimetal strip thermostat K2, current-limiting resistance R2, insulation indicator lamp DX2 and relay G2, and current-limiting resistance R2 connect afterwards in parallel respectively with bimetal strip thermostat K2, relay G2 load end with insulation indicator lamp DX2.
Described control circuit includes Thermal Cutoffs FU, the end of pressure switch K1 and the L end of receiving power supply after Thermal Cutoffs FU connects; After heater circuit and the thermal circuit series connection one terminates to the normally-closed contact of pressure switch, and the other end is received the N end of power supply.
Described timer switch circuit includes timer switch TK1 and relay G1, the N end of timer switch TK1 switch terminals first termination power, timer switch TK1 switch terminals second end and timer switch TK1 power end second end are succeeded second end of electrical equipment G1 coil-end, first end of G2 coil-end simultaneously; The normally opened contact of the first termination pressure switch K1 of timer switch TK1 power end.
The normally opened contact of the second termination pressure switch K1 of described relay G1 coil-end, second end of relay G1 load end; First end of relay G1 load end and the L end of receiving power supply after protective tube FU is connected in series.
Second end of described relay G2 coil-end with after temperature limiter T connects again with the L end of receiving power supply after protective tube FU is connected in series.
Described timer switch TK1 has a plurality of gears, and described timer switch TK1 distinguishes at different gears and cooks or cook congee or the Baoshang state.
The different gear of described timer switch TK1 indicates with the silk-screen mode.
Foregoing circuit is controlled cooking, cook congee, processes such as Baoshang of micro-pressure electric rice cooker by acting in conjunction.
The control method of above-mentioned micro-pressure electric rice cooker, wherein, under electric heating plate R0 is heated to a certain degree situation, the closed timer switch TK1 that triggers of pressure switch K1 normally opened contact works, timer switch TK1 continues to work until always and cooks or cook congee or the end of Baoshang process, the control influence of the K switch 1 that no longer is stressed after the timer switch TK1 work; After timer switch TK1 makes zero, directly cut off the coil power of timer switch TK1, relay G1, G2, make micro-pressure electric rice cooker directly enter keeping warm mode.
The control flow of described micro-pressure electric rice cooker keeping warm mode is as follows:
Whether when the 220V power supply was connected at the two ends of power supply, micro-pressure electric rice cooker entered keeping warm mode, control electric heating plate R0 by the break-make of bimetal strip thermostat K2 and heat, when temperature is low, bimetal strip thermostat K2 closure, electric heating plate R0 energising produces heat, and burner on light DX1 is bright; When temperature was higher, bimetal strip thermostat K2 disconnected, and electric heating plate R0 stops heating, and DX2 is bright for the insulation lamp.
The cook congee control flow of state of described micro-pressure electric rice cooker is as follows:
Step 1.1: according to the good Mi Shuihou of correct rice water proportional quantities, the interior pot that installs Mi Shui is put into electric cooker, the 220V power supply is connected at the two ends of power supply, and when timer switch TK1 pulled out and cooks congee grade, timer switch was connected, and electric cooker enters the state of cooking congee; The relay G2 adhesive of switching on, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 1.2: electric heating plate R0 continues heating, micro-pressure electric rice cooker inside is under heating state, because air evaporation produces certain pressure, when pressure acquires a certain degree, pressure switch K1 normally opened contact closure, electric heating plate R0 stops heating, burner on light DX1, insulation indicator lamp DX2 extinguish, and relay G1 moves adhesive, and timer TK1 starts working, relay G1 keeps attracting state always in the state of cooking congee, timer switch TK1 continuous firing to the process of cooking congee finishes;
Step 1.3: because electric heating plate R0 outage is not heated, the electric cooker internal pressure slowly reduces, when internal pressure is reduced to a certain degree, and pressure switch K1 normally-closed contact closure, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 1.4: the circulation of above step 1.2, step 1.3 process is carried out, up to the timer switch TK1 disconnection of making zero; Relay G1, G2 disconnect, and enter keeping warm mode;
Step 1.5: the process of cooking congee finishes.
Do not disconnect as temperature limiter T action takes place in the process of cooking congee, then relay G2 also keeps attracting state always in the process of cooking congee; When electric cooker went out abnormal high temperature, temperature limiter T action disconnected protection, and relay G2 disconnects, and this moment, electric cooker entered keeping warm mode, and in this case, timer switch TK1 keeps original duty.
The cook control flow of state of described micro-pressure electric rice cooker is as follows:
Step 2.1: according to the good Mi Shuihou of correct rice water proportional quantities, the interior pot that installs Mi Shui is put into housing, the 220V power supply is connected at the two ends of power supply, and when timer switch TK1 pulled out and cooks grade, timer switch TK1 connected, and micro-pressure electric rice cooker enters the state of cooking; The relay G2 adhesive of switching on, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 2.2: electric heating plate R0 continues heating, micro-pressure electric rice cooker inside is under heating state, because air evaporation produces certain pressure, when pressure acquires a certain degree, pressure switch K1 normally opened contact closure, electric heating plate R0 stops heating, burner on light DX1, insulation indicator lamp DX2 extinguish, and relay G1 moves adhesive, and timer TK1 starts working, relay G1 keeps attracting state always in the state of cooking, timer continuous firing to the process of cooking finishes;
Step 2.3: because electric heating plate R0 outage is not heated, the electric cooker internal pressure slowly reduces, when internal pressure is reduced to a certain degree, and pressure switch K1 normally-closed contact closure, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 2.4: the circulation of above step 2.2, step 2.3 process is carried out, up to the timer switch TK1 disconnection of making zero; Relay G1, G2 disconnect, and enter keeping warm mode;
Step 2.5: the process of cooking finishes.
Do not disconnect as temperature limiter T action takes place in the process of cooking, then relay G2 also keeps attracting state always in the process of cooking; When electric cooker went out abnormal high temperature, temperature limiter T action disconnected protection, and relay G2 disconnects, and this moment, electric cooker entered keeping warm mode, and in this case, timer switch TK1 keeps original duty.
The control flow of described micro-pressure electric rice cooker Baoshang state is as follows:
Step 3.1: after putting material and water into according to correct ratio, the 220V power supply is connected at the two ends of power supply, and when timer switch TK1 pulled out the Baoshang shelves, timer switch TK1 connected, and electric cooker enters the Baoshang state; The relay G2 adhesive of switching on, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 3.2: electric heating plate R0 continues heating, micro-pressure electric rice cooker inside is under heating state, because air evaporation produces certain pressure, when pressure acquires a certain degree, pressure switch K1 normally opened contact closure, electric heating plate R0 stops heating, burner on light DX1, insulation indicator lamp DX2 extinguish, and relay G1 moves adhesive, and timer TK1 starts working, relay G1 keeps attracting state always in the Baoshang state, timer continuous firing to Baoshang process finishes;
Step 3.3: because electric heating plate R0 outage is not heated, the electric cooker internal pressure slowly reduces, when reaching internal pressure and being reduced to a certain degree, and pressure switch K1 normally-closed contact closure, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 3.4: above step 3.2, the circulation of step 3.3 process are carried out, and making zero up to timer switch TK1, ' relay G1, G2 disconnect, and enter keeping warm mode in disconnection;
Step 3.5: the Baoshang process finishes.
Do not disconnect as temperature limiter T action takes place in the Baoshang process, then relay G2 also keeps attracting state always in the Baoshang process; When electric cooker went out abnormal high temperature, temperature limiter T action disconnected protection, and relay G2 disconnects, and this moment, electric cooker entered keeping warm mode, and in this case, timer switch TK1 keeps original duty.
Above-mentioned listed specific implementation is nonrestrictive, to one skilled in the art, is not departing from the scope of the invention, and various improvement and the variation carried out all belong to protection scope of the present invention.

Claims (15)

1. micro-pressure electric rice cooker includes: pot cover, housing, interior pot, electric heater unit, power control unit and control circuit; Described housing includes the chassis, and interior pot is arranged in the top on housing inner chamber chassis; Described electric heater unit and control circuit are electrically connected, and described electric heater unit is arranged in the outside of housing inner chamber pot or is positioned at the below of pot on the chassis; It is characterized in that: described power control unit includes pressure switch K1; Described control circuit includes heater circuit, thermal circuit and timer switch circuit; Connect with described pressure switch K1 normally-closed contact and insert power supply in described heater circuit and thermal circuit series connection back.
2. micro-pressure electric rice cooker as claimed in claim 1 is characterized in that: described heater circuit includes electric heating plate R0, current-limiting resistance R1 and burner on light DX1, and is in parallel with electric heating plate R0 after current-limiting resistance R1 connects with burner on light DX1.
3. micro-pressure electric rice cooker as claimed in claim 2, it is characterized in that: described thermal circuit includes bimetal strip thermostat K2, current-limiting resistance R2, insulation indicator lamp DX2 and relay G2, and current-limiting resistance R2 connect afterwards in parallel respectively with bimetal strip thermostat K2, relay G2 load end with insulation indicator lamp DX2.
4. micro-pressure electric rice cooker as claimed in claim 1 is characterized in that: described control circuit includes Thermal Cutoffs FU, the end of pressure switch K1 and the L end of receiving power supply after Thermal Cutoffs FU connects; After heater circuit and the thermal circuit series connection one terminates to the normally-closed contact of pressure switch, and the other end is received the N end of power supply.
5. micro-pressure electric rice cooker as claimed in claim 3, it is characterized in that: described timer switch circuit includes timer switch TK1 and relay G1, the N end of timer switch TK1 switch terminals first termination power, timer switch TK1 switch terminals second end and timer switch TK1 power end second end are succeeded second end of electrical equipment G1 coil-end, first end of G2 coil-end simultaneously; The normally opened contact of the first termination pressure switch K1 of timer switch TK1 power end.
6. micro-pressure electric rice cooker as claimed in claim 5 is characterized in that: the normally opened contact of the second termination pressure switch K1 of described relay G1 coil-end, second end of relay G1 load end; First end of relay G1 load end and the L end of receiving power supply after protective tube FU is connected in series.
7. micro-pressure electric rice cooker as claimed in claim 5 is characterized in that: second end of described relay G2 coil-end with after temperature limiter T connects again with the L end of receiving power supply after protective tube FU is connected in series.
8. micro-pressure electric rice cooker as claimed in claim 5 is characterized in that: described timer switch TK1 has a plurality of gears, and described timer switch TK1 distinguishes at different gears and cooks or cook congee or the Baoshang state.
9. micro-pressure electric rice cooker as claimed in claim 8 is characterized in that: the different gear of described timer switch TK1 indicates with the silk-screen mode.
10. the control method of micro-pressure electric rice cooker as claimed in claim 5, it is characterized in that: under electric heating plate R0 is heated to a certain degree situation, the closed timer switch TK1 that triggers of pressure switch K1 normally opened contact works, timer switch TK1 continues to work until always and cooks or cook congee or the end of Baoshang process, the control influence of the K switch 1 that no longer is stressed after the timer switch TK1 work; After timer switch TK1 makes zero, directly cut off the coil power of timer switch TK1, relay G1, G2, make micro-pressure electric rice cooker directly enter keeping warm mode.
11. the control method of micro-pressure electric rice cooker as claimed in claim 10, it is characterized in that: the control flow of described micro-pressure electric rice cooker keeping warm mode is as follows: when the 220V power supply is connected at the two ends of power supply, micro-pressure electric rice cooker enters keeping warm mode, whether the break-make control electric heating plate R0 by bimetal strip thermostat K2 heats, when temperature is low, bimetal strip thermostat K2 closure, electric heating plate R0 energising produces heat, and burner on light DX1 is bright; When temperature was higher, bimetal strip thermostat K2 disconnected, and electric heating plate R0 stops heating, and DX2 is bright for the insulation lamp.
12. the control method of micro-pressure electric rice cooker as claimed in claim 10 is characterized in that:
The cook congee control flow of state of described micro-pressure electric rice cooker is as follows:
Step 1.1: according to the good Mi Shuihou of correct rice water proportional quantities, the interior pot that installs Mi Shui is put into electric cooker, the 220V power supply is connected at the two ends of power supply, and when timer switch TK1 pulled out and cooks congee grade, timer switch was connected, and electric cooker enters the state of cooking congee; The relay G2 adhesive of switching on, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 1.2: electric heating plate R0 continues heating, micro-pressure electric rice cooker inside is under heating state, because air evaporation produces certain pressure, when pressure acquires a certain degree, pressure switch K1 normally opened contact closure, electric heating plate R0 stops heating, burner on light DX1, insulation indicator lamp DX2 extinguish, and relay G1 moves adhesive, and timer TK1 starts working, relay G1 keeps attracting state always in the state of cooking congee, timer switch TK1 continuous firing to the process of cooking congee finishes;
Step 1.3: because electric heating plate R0 outage is not heated, the electric cooker internal pressure slowly reduces, when internal pressure is reduced to a certain degree, and pressure switch K1 normally-closed contact closure, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 1.4: the circulation of above step 1.2, step 1.3 process is carried out, up to the timer switch TK1 disconnection of making zero; Relay G1, G2 disconnect, and enter keeping warm mode;
Step 1.5: the process of cooking congee finishes.
13. the control method of micro-pressure electric rice cooker as claimed in claim 10 is characterized in that:
The cook control flow of state of described micro-pressure electric rice cooker is as follows:
Step 2.1: according to the good Mi Shuihou of correct rice water proportional quantities, the interior pot that installs Mi Shui is put into housing, the 220V power supply is connected at the two ends of power supply, and when timer switch TK1 pulled out and cooks grade, timer switch TK1 connected, and micro-pressure electric rice cooker enters the state of cooking; The relay G2 adhesive of switching on, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 2.2: electric heating plate R0 continues heating, micro-pressure electric rice cooker inside is under heating state, because air evaporation produces certain pressure, when pressure acquires a certain degree, pressure switch K1 normally opened contact closure, electric heating plate R0 stops heating, burner on light DX1, insulation indicator lamp DX2 extinguish, and relay G1 moves adhesive, and timer TK1 starts working, relay G1 keeps attracting state always in the state of cooking, timer continuous firing to the process of cooking finishes;
Step 2.3: because electric heating plate R0 outage is not heated, the electric cooker internal pressure slowly reduces, when internal pressure is reduced to a certain degree, and pressure switch K1 normally-closed contact closure, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 2.4: the circulation of above step 2.2, step 2.3 process is carried out, up to the timer switch TK1 disconnection of making zero; Relay G1, G2 disconnect, and enter keeping warm mode;
Step 2.5: the process of cooking finishes.
14. the control method of micro-pressure electric rice cooker as claimed in claim 10 is characterized in that:
The control flow of described micro-pressure electric rice cooker Baoshang state is as follows:
Step 3.1: after putting material and water into according to correct ratio, the 220V power supply is connected at the two ends of power supply, and when timer switch TK1 pulled out the Baoshang shelves, timer switch TK1 connected, and electric cooker enters the Baoshang state; The relay G2 adhesive of switching on, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 3.2: electric heating plate R0 continues heating, micro-pressure electric rice cooker inside is under heating state, because air evaporation produces certain pressure, when pressure acquires a certain degree, pressure switch K1 normally opened contact closure, electric heating plate R0 stops heating, burner on light DX1, insulation indicator lamp DX2 extinguish, and relay G1 moves adhesive, and timer TK1 starts working, relay G1 keeps attracting state always in the Baoshang state, timer continuous firing to Baoshang process finishes;
Step 3.3: because electric heating plate R0 outage is not heated, the electric cooker internal pressure slowly reduces, when reaching internal pressure and being reduced to a certain degree, and pressure switch K1 normally-closed contact closure, the electric heating plate R0 heating of switching on, burner on light DX1 is bright;
Step 3.4: above step 3.2, the circulation of step 3.3 process are carried out, and making zero up to timer switch TK1, ' relay G1, G2 disconnect, and enter keeping warm mode in disconnection;
Step 3.5: the Baoshang process finishes.
15. control method as claim 12 or 13 or 14 described micro-pressure electric rice cookers, it is characterized in that: as cook congee or cook or the Baoshang process in temperature limiter T action does not take place disconnects, then relay G2 cook congee or cook or the Baoshang process in also keep attracting state always; When electric cooker went out abnormal high temperature, temperature limiter T action disconnected protection, and relay G2 disconnects, and this moment, electric cooker entered keeping warm mode, and in this case, timer switch TK1 keeps original duty.
CN2009100395043A 2009-05-15 2009-05-15 Micro-pressure electric rice cooker and control method thereof Active CN101884497B (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102961039A (en) * 2012-11-27 2013-03-13 叶娟 Timing system for electric pressure steamer
CN105636484A (en) * 2013-10-17 2016-06-01 三菱电机株式会社 Thermal cooker

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL169545C (en) * 1973-10-26 1982-08-02 Rinnai Kk PRESSURE COOKER.
JPS6135126Y2 (en) * 1980-03-27 1986-10-13
CN2165745Y (en) * 1993-07-08 1994-05-25 通化市黄海电子技术研究所 Full-automatic electric cooking vessel
CN2316887Y (en) * 1997-10-25 1999-05-05 李兆安 Energy-saving electric cooker
CN200987588Y (en) * 2006-09-28 2007-12-12 袁月 Electric cooker with sound prompting
CN201435984U (en) * 2009-05-15 2010-04-07 珠海格力电器股份有限公司 A micro pressure electric cooker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102961039A (en) * 2012-11-27 2013-03-13 叶娟 Timing system for electric pressure steamer
CN105636484A (en) * 2013-10-17 2016-06-01 三菱电机株式会社 Thermal cooker

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