CN202919915U - Electric pressure cooker with power failure protection function - Google Patents

Electric pressure cooker with power failure protection function Download PDF

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Publication number
CN202919915U
CN202919915U CN 201220446658 CN201220446658U CN202919915U CN 202919915 U CN202919915 U CN 202919915U CN 201220446658 CN201220446658 CN 201220446658 CN 201220446658 U CN201220446658 U CN 201220446658U CN 202919915 U CN202919915 U CN 202919915U
Authority
CN
China
Prior art keywords
pressure
switch
cooker
heater
protection function
Prior art date
Application number
CN 201220446658
Other languages
Chinese (zh)
Inventor
高万宝
杨兴国
梁少雄
Original Assignee
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 美的集团股份有限公司 filed Critical 美的集团股份有限公司
Priority to CN 201220446658 priority Critical patent/CN202919915U/en
Application granted granted Critical
Publication of CN202919915U publication Critical patent/CN202919915U/en

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Abstract

An electric pressure cooker with a power failure protection function comprises a cooker cover, a sealing ring, an inner cooker, an outer cooker, a heater, a pressure controlling device and a heating circuit, wherein the sealing ring is arranged between the cooker cover and the inner cooker, and the inner cooker is arranged in the outer cooker. The electric pressure cooker with the power failure protection function is characterized in that a hand reset pressure switch connected with the heater in series is arranged in the cooker cover, the hand reset pressure switch comprises a switch connected with the heater in series, a push rod capable of driving the switch to switch off, a pressure limiting elastic sheet for sensing inner pressure of the inner cooker and driving the push rod to move and a reset button which enables the switch to recover switching-on, and the pressure limiting elastic sheet separate a cavity of the inner cooker from the push rod and the switch. When the electric pressure cooker with the power failure protection function is in an abnormal working state, and pressure inside the electric pressure cooker with the power failure protection function increases abnormally, the hand reset pressure switch connected with the heater in series is switched off so that the heater stops heating and using safety of the electric pressure cooker with the power failure protection function can be ensured. The switch can be switched on only by the hand resetting after failures being removed, and thereby improving safety in use.

Description

A kind of electric pressure cooking saucepan with power-off protection function

Technical field

The utility model relates to electric pressure cooking saucepan, especially a kind of electric pressure cooking saucepan with power-off protection function.

Background technology

It is to control the break-make realization of heater circuit by pressure control device that the pressure of existing most of electric pressure cooking saucepans is controlled, but when the electric pressure cooking saucepan operation irregularity, for example: pressure control device lost efficacy, heating element heater will be in the energising heated condition always, when pot inner pressure reaches the operating pressure of setting, its pressure can continue to increase, temperature raises, and has potential safety hazard; Therefore, a lot of electric pressure cooking saucepans are equipped with the pressure relief devices such as pressure limiting valve, safety valve, and this type of pressure release safety device all is not connected with control circuit, and heating element heater still is in the energising heated condition in pressure release, has the potential safety hazards such as dry combustion method, also wastes energy; When pressure relief device also lost efficacy, because heating element heater is in the energising heated condition always, pot inner pressure will continue to rise, if can not in time cut off the electricity supply, have very large potential safety hazard.

Summary of the invention

The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of electric pressure cooking saucepan with power-off protection function is provided.

the technical scheme that realizes the utility model purpose is: a kind of electric pressure cooking saucepan with power-off protection function, comprise pot cover, sealing ring, interior pot, outer pot, heater, pressure control device and heater circuit, sealing ring is placed between pot cover and interior pot, described interior pot is placed in described outer pot, it is characterized in that, pot cover is provided with the manual reset pressure switch of connecting with described heater, described manual reset pressure switch comprises the switch of connecting with described heater, what corresponding described switch arranged can drive the push rod that described switch disconnects, respond to described interior pot internal pressure and drive the pressure limiting shell fragment of described pushrod movement and make switch recover the SR of connecting, described pressure limiting shell fragment is with cavity and the described push rod of described interior pot, described switch separates.

Described manual reset switch is provided with the cavity that communicates with described interior pot, described pressure limiting shell fragment is arranged in described cavity, described push rod can endwisely slip and the setting of corresponding described pressure limiting shell fragment along manual reset switch, one end of described push rod contacts with described pressure limiting shell fragment, and the other end can drive described switch and disconnect.

Described switch comprises the first binding post, the second binding post and movable contact spring, described movable contact spring one end is fixedly connected with described the first binding post, the other end can contact or disconnect with described the second binding post, and described switch is connected with described heater by described the first binding post and described the second binding post.

Also be provided with movable contact on described movable contact spring, on described the second binding post, the position of corresponding described movable contact is provided with stationary contact.Stationary contact coordinates with movable contact, the electric conductivity when improving the second binding post and movable contact spring break-make.

Above-mentioned SR is positioned at described movable contact spring upside, and SR can drive movable contact spring downwards and the second binding post is closed.

When described pressure limiting shell fragment drives the described switch of described push rod disconnection, described interior pot internal pressure is 130KPa~250KPa.

When described pressure limiting shell fragment drives the described switch of described push rod disconnection, described interior pot internal pressure is 140KPa~220KPa.

During the electric pressure cooking saucepan operation irregularity, pressure control device lost efficacy, when pot inner pressure reaches operating pressure, heater circuit can not normally disconnect, heater continues heating, and pot inner pressure continues to rise, during the opening pressure set higher than manual reset pressure switch when pot inner pressure, switch disconnects, the heater stopped heating.

The utility model compared with prior art, be provided with the manual reset pressure switch of can the perception pot inner pressure and connecting with heater at pot cover, when the electric pressure cooking saucepan operation irregularity, when pot inner pressure increases extremely, the manual reset pressure switch of connecting with heater disconnects, make the heater stopped heating, guarantee the use safety of electric pressure cooking saucepan; Only just can make switch connection by hand-reset after fault is got rid of, improve the security of using.

Description of drawings

Fig. 1 is the structural representation of the utility model when the manual reset pressure switch on-state;

Fig. 2 is the enlarged drawing during the manual reset pressure switch on-state in the utility model;

Fig. 3 is the structural representation of the utility model when the manual reset pressure switch off-state;

Fig. 4 is the enlarged drawing during the manual reset pressure switch off-state in the utility model;

Fig. 5 be in the utility model manual reset pressure switch partly cut open structural representation.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model is described further.

As Fig. 1, Fig. 2, shown in Figure 5; a kind of electric pressure cooking saucepan with power-off protection function; comprise pot cover 1, sealing ring 2, interior pot 3, outer pot 4, heater 5, pressure control device and heater circuit; sealing ring 2 is placed between pot cover 1 and interior pot 3; pot cover 1, sealing ring 2, interior pot 3 consist of the closed cavity of heat food, and heater 5 is placed in the position between interior pot 3 bottoms and outer pot 4.Pot cover 1 is provided with the manual reset pressure switch of connecting with heater 5.

Manual reset pressure switch comprises the switch 6 of connecting with heater 5, push rod 7, the induction kettle internal pressure that energy driving switch 6 disconnects and the SR 9 that drives the pressure limiting shell fragment 8 of push rod 7 motions and switch 6 recoveries are connected.

Switch 6 comprises the first binding post 61, the second binding post 62 and movable contact spring 63, movable contact spring 63 1 ends are fixedly connected with the first binding post 61, the other end can contact or disconnect with the second binding post 62, and switch 6 is connected with heater 5 by the first binding post 61 and the second binding post 62.

Manual reset pressure switch is by being with externally threaded connecting portion 12 and nut 13 to be fixed on pot cover 1, connecting portion 12 is provided with through hole, cavity in manual reset pressure switch is communicated with the confined space of heat food, described pressure limiting shell fragment 8 is installed in the cavity of manual reset pressure switch, pressure limiting shell fragment 8 separates the miscellaneous part of steam in pot and manual reset pressure switch, and can be in pot strain occurs under the pressure-acting of steam; Can along manual reset switch in axial sliding push rod 7 be arranged on pressure limiting shell fragment 8 upsides, push rod 7 can slide in the guide 72 in cavity, the lower end of push rod 7 contacts with pressure limiting shell fragment 8, and the upper end is positioned at movable contact spring 63 belows, can drive movable contact spring 63 and the second binding post 62 disconnects.The second binding post 62 is provided with stationary contact 621, and movable contact spring 63 is provided with movable contact spring 631, and stationary contact 621 coordinates with movable contact 631, the electric conductivity when improving the second binding post 62 with movable contact spring 63 break-make.

Movable contact spring 63 upsides are provided with SR 9, and SR 9 can drive movable contact spring 63 and the second binding post 62 closures.Be filled with insulation filler 11 between the electrical parts such as shell 10 and binding post, but electrical part and human body contact portion are separated, prevent from causing security incident because of electric leakage.

In the present embodiment, when pot inner pressure was 140KPa~220KPa, the 8 upwards elastic deformations of pressure limiting shell fragment drove push rod 7 and move upward, and promoted movable contact spring 63 and the second binding post 62 disconnections, made heater 5 stopped heatings; And in normal operation, when pot inner pressure reaches 70KPa, pressure control device disconnects heater circuit.

when pressure cooker works, when as long as the pressure in pot reaches the operating pressure 70KPa that sets when disconnecting heater circuit, the heater circuit that pressure control device is about to heater 5 disconnects, and the interior pressure of pot this moment does not still reach the pressure that the manual reset pressure switch disconnection is set, therefore, manual reset pressure switch can not disconnect, and can guarantee that the normal operation of electric pressure cooking saucepan is unaffected, as Fig. 3, shown in Figure 4, in the situation that electric pressure cooking saucepan work appearance is abnormal, when the pressure in pot reaches pressure control device and disconnects the pressure that heater circuit sets, the heater circuit of heater 5 does not still disconnect, pot inner pressure occurring continues to raise, when pressure is elevated to the pressure that manual reset pressure switch is disconnected set, elastic deformation upwards occurs in pressure limiting shell fragment 8, driving push rod 7 moves upward, promote movable contact spring 63 and the second binding post 62 disconnections, make heater 5 stopped heatings, be unlikely to because kettle temperature and pressure anomaly raise, the user to be damaged, security reliability is high, after pot inner pressure descended, manual reset pressure switch can not automatically reset yet, and only carried out hand-reset by pressing SR 9 after fault is got rid of, and manual reset pressure switch is connected.

Claims (7)

1. electric pressure cooking saucepan with power-off protection function, comprise pot cover, sealing ring, interior pot, outer pot, heater, pressure control device and heater circuit, described sealing ring is placed between described pot cover and described interior pot, described interior pot is placed in described outer pot, it is characterized in that: described pot cover is provided with the manual reset pressure switch of connecting with described heater, described manual reset pressure switch comprises the switch of connecting with described heater, what corresponding described switch arranged can drive the push rod that described switch disconnects, respond to described interior pot internal pressure with the pressure limiting shell fragment that drives described pushrod movement and the SR that described switch recovery is connected, described pressure limiting shell fragment is with cavity and the described push rod of described interior pot, described switch separates.
2. the electric pressure cooking saucepan with power-off protection function according to claim 1; it is characterized in that: described manual reset switch is provided with the cavity that communicates with described interior pot; described pressure limiting shell fragment is installed in described cavity; described push rod can endwisely slip and the setting of corresponding described pressure limiting shell fragment along described manual reset switch; one end of described push rod contacts with described pressure limiting shell fragment, and the other end disconnects in order to drive described switch.
3. the electric pressure cooking saucepan with power-off protection function according to claim 1, it is characterized in that: described switch comprises the first binding post, the second binding post and movable contact spring; Described movable contact spring one end is fixedly connected with described the first binding post, and the other end can contact or disconnect with described the second binding post, and described switch is connected with described heater by described the first binding post and described the second binding post.
4. the electric pressure cooking saucepan with power-off protection function according to claim 3, it is characterized in that: also be provided with movable contact on described movable contact spring, on the second binding post, the position of corresponding movable contact is provided with stationary contact.
5. according to claim 2 or 3 or 4 described electric pressure cooking saucepans with power-off protection function, it is characterized in that: described SR is arranged on described movable contact spring upside, and described SR can drive described movable contact spring and described the second binding post is closed.
6. the electric pressure cooking saucepan with power-off protection function according to claim 5 is characterized in that: when described pressure limiting shell fragment drives described push rod and disconnects described switch, the inner pressure of described interior pot is 130KPa~250KPa.
7. the electric pressure cooking saucepan with power-off protection function according to claim 6 is characterized in that: when described pressure limiting shell fragment drives described push rod and disconnects described switch, the inner pressure of described interior pot is 140KPa~220KPa.
CN 201220446658 2012-09-04 2012-09-04 Electric pressure cooker with power failure protection function CN202919915U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220446658 CN202919915U (en) 2012-09-04 2012-09-04 Electric pressure cooker with power failure protection function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220446658 CN202919915U (en) 2012-09-04 2012-09-04 Electric pressure cooker with power failure protection function

Publications (1)

Publication Number Publication Date
CN202919915U true CN202919915U (en) 2013-05-08

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Family Applications (1)

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CN 201220446658 CN202919915U (en) 2012-09-04 2012-09-04 Electric pressure cooker with power failure protection function

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Country Link
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018018670A1 (en) * 2016-07-26 2018-02-01 佛山市顺德区美的电热电器制造有限公司 Excess pressure protection switch and pressure appliance provided with same
CN107647770A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Overvoltage protection switch and there are its pressure means
CN107647775A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Overvoltage protection switch and there are its pressure means
CN107647776A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Pressure means
CN107647777A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Pressure means
CN107647779A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Overvoltage protection switch and there are its pressure means
CN107647778A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Pressure means

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018018670A1 (en) * 2016-07-26 2018-02-01 佛山市顺德区美的电热电器制造有限公司 Excess pressure protection switch and pressure appliance provided with same
CN107647770A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Overvoltage protection switch and there are its pressure means
CN107647775A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Overvoltage protection switch and there are its pressure means
CN107647776A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Pressure means
CN107647777A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Pressure means
CN107647779A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Overvoltage protection switch and there are its pressure means
CN107647778A (en) * 2016-07-26 2018-02-02 佛山市顺德区美的电热电器制造有限公司 Pressure means
EP3318163A4 (en) * 2016-07-26 2018-07-25 Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Limited Excess pressure protection switch and pressure appliance provided with same
CN107647778B (en) * 2016-07-26 2020-06-30 佛山市顺德区美的电热电器制造有限公司 Pressure device
CN107647776B (en) * 2016-07-26 2020-06-30 佛山市顺德区美的电热电器制造有限公司 Pressure device
CN107647779B (en) * 2016-07-26 2020-09-22 佛山市顺德区美的电热电器制造有限公司 Overvoltage protection switch and pressure appliance with same
CN107647775B (en) * 2016-07-26 2020-11-20 佛山市顺德区美的电热电器制造有限公司 Overvoltage protection switch and pressure appliance with same

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