CN103690056B - Electric cooker anti-dry burning device - Google Patents
Electric cooker anti-dry burning device Download PDFInfo
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- CN103690056B CN103690056B CN201310704427.5A CN201310704427A CN103690056B CN 103690056 B CN103690056 B CN 103690056B CN 201310704427 A CN201310704427 A CN 201310704427A CN 103690056 B CN103690056 B CN 103690056B
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- cylinder
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- electric cooker
- electric
- push switch
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- 239000004411 aluminium Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 11
- 235000007164 Oryza sativa Nutrition 0.000 abstract description 5
- 235000009566 rice Nutrition 0.000 abstract description 5
- 238000009841 combustion method Methods 0.000 abstract description 4
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
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- Cookers (AREA)
Abstract
The object of the invention is to propose a kind of simple and practical electric cooker anti-dry burning device.This electric cooker anti-dry burning device comprises the support be arranged at below electric cooker body, and described support is connected with a cylinder by spring, and described cylinder projects upwards the end face in support under the action of the spring; Described support is provided with a push switch in the lower position of cylinder, and described push switch is serially connected with in the power circuit of electric cooker electric hot tray.When the pot body of electric cooker is set up on heat-generating disc, simultaneously also can by cylinder to pressing down, the bottom of cylinder is pressed on push switch, thus the power circuit of electric conduction rice cooker electric hot tray, now electric hot tray can generate heat under the control of the control units such as single-chip microcomputer; After pot body is removed, cylinder can move up under the action of the spring, thus disengages with push switch, and push switch is disconnected, and namely the power circuit of electric cooker electric hot tray is disconnected, and electric cooker electric hot tray stops heating, avoids occurring dry combustion method situation.
Description
Technical field
The invention belongs to household electrical appliance technical field, be related specifically to a kind of electric cooker anti-dry burning device.
Background technology
The heater circuit of traditional electric cooker is formed primarily of temperature-sensitive soft magnet and permanent magnet.Temperature-sensitive soft magnet and heating surface are fixed together, the heat of interior pot bottom directly passes to it by heating surface, and when temperature is lower than 103 DEG C, temperature-sensitive soft magnet is the same with permanent magnet has magnetic, when temperature is higher than 103 DEG C, temperature-sensitive soft magnet can lose magnetism suddenly.
Press starting switch with hand when cooking, make permanent magnet and soft magnet adhesive by drive link, its suction is greater than the elastic force of spring and the self gravitation of permanent magnet, so permanent magnet can not fall, the closing of contact, circuit ON, heating board starts heating.After meal boils, temperature continues to rise, and when reaching 103 DEG C, soft magnet loses magnetism suddenly, and permanent magnet falls under the elastic force effect of self gravitation and spring, and make contact separately by drive link, circuit disconnects, and heating board stops heating.So just play the effect of limit temperature.
But, present electric cooker adopts single-chip microcomputer to be used as control circuit, and utilize thermistor to provide the temperature information of pot body for single-chip microcomputer, after the temperature of pot body exceedes predetermined temperature, single-chip microcomputer can stop the heating of heat-generating disc, has therefore given up traditional push switch and corresponding drive link, soft magnet etc.But if under given conditions, when pot body is removed, single-chip microcomputer can not automatically detect a pot body and leave heat-generating disc, therefore likely occurs the situation of dry combustion method, not only wastes energy, and fire.
Summary of the invention
The object of the invention is to propose a kind of simple and practical electric cooker anti-dry burning device.
Electric cooker anti-dry burning device of the present invention comprises the support be arranged at below electric cooker body, and described support is connected with a cylinder by spring, and described cylinder projects upwards the end face in support under the action of the spring; Described support is provided with a push switch in the lower position of cylinder, and described push switch is serially connected with in the power circuit of electric cooker electric hot tray.
When the pot body of electric cooker is set up on heat-generating disc, simultaneously also can by cylinder to pressing down, the bottom of cylinder is pressed on push switch, thus the power circuit of electric conduction rice cooker electric hot tray, now electric hot tray can generate heat under the control of the control units such as single-chip microcomputer; After pot body is removed, cylinder can move up under the action of the spring, thus disengages with push switch, and push switch is disconnected, and namely the power circuit of electric cooker electric hot tray is disconnected, and electric cooker electric hot tray stops heating, avoids occurring dry combustion method situation.
Further, described push switch comprises insulation shell and is arranged at the first terminal, the second terminal and the metallic conduction sheet in housing, described the first terminal, the second terminal are positioned at the below of metallic conduction sheet, the first terminal, the second terminal are serially connected with in the power circuit of electric cooker electric hot tray, described cylinder is that isolation material is made, the end of cylinder is passed down through housing, and is fixedly connected with metallic conduction sheet, synchronously moves up and down with cylinder to make metallic conduction sheet.When metallic conduction sheet moves down with cylinder, its two ends can with the first terminal be positioned at below metallic conduction sheet, the second termination contact, make to be electrically connected between the first terminal, the second terminal, thus the power circuit of electric conduction rice cooker electric hot tray; When metallic conduction sheet moves up with cylinder, its two ends can disengage with the first terminal, the second terminal, and the electrical connection between the first terminal, the second terminal is disconnected, thus disconnect the power circuit of electric cooker electric hot tray.
Further, described metallic conduction sheet is domes, the end of described cylinder is fixedly connected with the peak of metallic conduction sheet, and described the first terminal, the second terminal lay respectively at the down either side of metallic conduction sheet, and the first terminal, the second terminal are bullion chip architecture.Like this when metallic conduction sheet is pressed on downwards on the first terminal, the second terminal by cylinder, metallic conduction sheet there will be certain deformation, thus ensure metal conducting strip and the first terminal, the second terminal contact tight, even if there is small size vibration in cylinder, also can ensure that metal conducting strip and the first terminal, the second terminal keep in touch, thus avoid and cause because of the vibration of cylinder the situation of electric hot tray job insecurity to occur.
Further, described Bracket setting has vertical guide pipe, and described cylinder is arranged in guide pipe, can ensure that cylinder can only vertically movement by guide pipe, guarantees that cylinder can not sidesway and affect the normal work of electric hot tray.
Further, the top of described cylinder is provided with aluminium lid, and described aluminium lid internal fixtion has thermistor.The control unit of electric cooker can realize limitting temperature function by thermistor, operationally, aluminium lid is by cylinder upwards jacking and contacting with pot body bottom surface, thermistor is arranged in aluminium lid, thermistor can be made to be close with the bottom surface of pot body all the time, to make the temperature sensing of thermistor more accurate.
Electric cooker anti-dry burning device structure of the present invention is simple, ensures that heating plate of electric cooker can not generate heat when not having pot body, reliable operation by the control of Purely mechanical, is very suitable for modern by monolithic processor controlled electric cooker.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of electric cooker anti-dry burning device of the present invention.
Fig. 2 is the structure principle chart of push switch of the present invention.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the effect and operation principle etc. of the specific embodiment of the present invention as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.
Embodiment 1:
As shown in Figure 1, the electric cooker anti-dry burning device of the present embodiment comprises the support 2 be arranged at below electric cooker body 1, described support 2 is connected with a cylinder be made up of isolation material 4 by spring 3, and described cylinder 4 projects upwards the end face in support 2 under the effect of spring 3; Described support 2 is provided with a push switch 5 in the lower position of cylinder 4, and described push switch 5 is serially connected with in the power circuit of electric cooker electric hot tray.
When the pot body 1 of electric cooker is set up on heat-generating disc, simultaneously also can by cylinder 4 to pressing down, the bottom of cylinder 4 is pressed on push switch 5, thus the power circuit of electric conduction rice cooker electric hot tray, now electric hot tray can generate heat under the control of the control units such as single-chip microcomputer; After pot body 1 is removed, cylinder 4 can move up under the effect of spring 3, thus disengages with push switch 5, push switch 5 is disconnected, namely the power circuit of electric cooker electric hot tray is disconnected, and electric cooker electric hot tray stops heating, avoids occurring dry combustion method situation.
Further, described support 2 is provided with vertical guide pipe 21, and described cylinder 4 is arranged in guide pipe 21, can ensure that cylinder 4 can only vertically movement by guide pipe 21, guarantees that cylinder 4 can not sidesway and affect the normal work of electric hot tray.
Further, the top of described cylinder 4 is provided with aluminium lid 6, and described aluminium lid 6 internal fixtion has thermistor 7.The control unit of electric cooker can realize limitting temperature function by thermistor 7, operationally, aluminium lid 6 is by cylinder 4 upwards jacking and contacting with pot body 1 bottom surface, thermistor 7 is arranged in aluminium lid 6, thermistor 7 can be made to be close with the bottom surface of pot body 1 all the time, to make the temperature sensing of thermistor 7 more accurate.
As shown in Figure 2, described push switch 5 comprises insulation shell 51 and the first terminal 52, second terminal 53 that is arranged in housing 51 and metallic conduction sheet 54, described the first terminal 52, second terminal 53 is positioned at the below of the both sides of metallic conduction sheet 54, the first terminal 52, second terminal 53 is serially connected with in the power circuit of electric cooker electric hot tray, the end of cylinder 4 is passed down through housing 51, and be fixedly connected with metallic conduction sheet 54, synchronously move up and down with cylinder 4 to make metallic conduction sheet 54.When metallic conduction sheet 54 moves down with cylinder 4, its two ends can contact with the first terminal 52, second terminal 53 be positioned at below metallic conduction sheet 54, make to be electrically connected between the first terminal 52, second terminal 53, thus the power circuit of electric conduction rice cooker electric hot tray; When metallic conduction sheet 54 moves up with cylinder 4, its two ends can disengage with the first terminal 52, second terminal 53, and the electrical connection between the first terminal 52, second terminal 53 is disconnected, thus disconnect the power circuit of electric cooker electric hot tray.
Metallic conduction sheet 54 is domes, the end of described cylinder 4 is fixedly connected with the peak of metallic conduction sheet 54, described the first terminal 52, second terminal 53 lays respectively at the down either side of metallic conduction sheet 54, and the first terminal 52, second terminal 53 is bullion sheet.Like this when metallic conduction sheet 54 is pressed on downwards on the first terminal 52, second terminal 53 by cylinder 4, metallic conduction sheet 54 there will be certain deformation, thus ensure that metal conducting strip 54 is tight with the contact of the first terminal 52, second terminal 53, even if there is small size vibration in cylinder 4, also can ensure that metal conducting strip 54 and the first terminal 52, second terminal 53 keep in touch, thus avoid and cause the situation of electric hot tray job insecurity to occur because of the vibration of cylinder 4.
Claims (4)
1. an electric cooker anti-dry burning device, is characterized in that comprising the support be arranged at below electric cooker body, and described support is connected with a cylinder by spring, and described cylinder projects upwards the end face in support under the action of the spring; Described support is provided with a push switch in the lower position of cylinder, and described push switch is serially connected with in the power circuit of electric cooker electric hot tray; Described push switch comprises insulation shell and is arranged at the first terminal, the second terminal and the metallic conduction sheet in housing, described the first terminal, the second terminal are positioned at the below of metallic conduction sheet, the first terminal, the second terminal are serially connected with in the power circuit of electric cooker electric hot tray, described cylinder is that isolation material is made, the end of cylinder is passed down through housing, and be fixedly connected with metallic conduction sheet, synchronously move up and down with cylinder to make metallic conduction sheet.
2. electric cooker anti-dry burning device according to claim 1, it is characterized in that described metallic conduction sheet is domes, the end of described cylinder is fixedly connected with the peak of metallic conduction sheet, described the first terminal, the second terminal lay respectively at the down either side of metallic conduction sheet, and the first terminal, the second terminal are bullion chip architecture.
3. electric cooker anti-dry burning device according to claim 1 and 2, it is characterized in that described Bracket setting has vertical guide pipe, described cylinder is arranged in guide pipe.
4. electric cooker anti-dry burning device according to claim 1 and 2, is characterized in that the top of described cylinder is provided with aluminium lid, and described aluminium lid internal fixtion has thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310704427.5A CN103690056B (en) | 2013-12-20 | 2013-12-20 | Electric cooker anti-dry burning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310704427.5A CN103690056B (en) | 2013-12-20 | 2013-12-20 | Electric cooker anti-dry burning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103690056A CN103690056A (en) | 2014-04-02 |
| CN103690056B true CN103690056B (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310704427.5A Active CN103690056B (en) | 2013-12-20 | 2013-12-20 | Electric cooker anti-dry burning device |
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| CN (1) | CN103690056B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609074A (en) * | 2015-02-05 | 2015-05-13 | 张益民 | Photovoltaic sterilization garbage can |
| CN104792433B (en) * | 2015-04-30 | 2017-07-21 | 佛山市川东磁电股份有限公司 | One kind is vertically arranged electric resistance sensor |
| CN107198437B (en) * | 2017-06-13 | 2018-12-21 | 泾县信达工贸有限公司 | A kind of anti-dry burning device of electric cooker electric hot tray |
| CN110254905B (en) * | 2019-04-18 | 2021-05-07 | 建德市思行五金有限公司 | Detachable portable tableware |
| CN114983243A (en) * | 2022-06-22 | 2022-09-02 | 谢一龙 | Dry-burning-resistant bimetal temperature limiter of electric cooker |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006081723A (en) * | 2004-09-16 | 2006-03-30 | Matsushita Electric Ind Co Ltd | Electric food processor |
| CN2874975Y (en) * | 2006-01-24 | 2007-02-28 | 颜陶 | Magnetic shield anti-dry burning sensor for micro computer type rice cooker |
| CN201253144Y (en) * | 2008-04-28 | 2009-06-10 | 颜陶 | Automatic controlled rice cooker |
| CN201422761Y (en) * | 2009-06-12 | 2010-03-17 | 佛山市川东热敏磁电有限公司 | Dry-burning preventing sensor of novel microcomputer electric rice cooker |
| CN203749227U (en) * | 2013-12-20 | 2014-08-06 | 阮保清 | Dry burning prevention device for electric cooker |
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2013
- 2013-12-20 CN CN201310704427.5A patent/CN103690056B/en active Active
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| Publication number | Publication date |
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| CN103690056A (en) | 2014-04-02 |
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Effective date of registration: 20160721 Address after: 525300, Guangdong Province, Xinyi City, Maoming Province, Shan Ling tou Patentee after: Jiangdong Electronic Co. , Ltd. , Xinyi. Address before: 525300, Guangdong Province, Xinyi City, Maoming Province, Shan Ling tou Patentee before: Ruan Baoqing |