CN103690056A - Anti-dry heating device of electric rice cooker - Google Patents
Anti-dry heating device of electric rice cooker Download PDFInfo
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- CN103690056A CN103690056A CN201310704427.5A CN201310704427A CN103690056A CN 103690056 A CN103690056 A CN 103690056A CN 201310704427 A CN201310704427 A CN 201310704427A CN 103690056 A CN103690056 A CN 103690056A
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Abstract
The purpose of the invention is to provide a simple and practical anti-dry heating device of an electric rice cooker. The anti-dry heating device of the electric rice cooker comprises a bracket arranged below a cooker body of the electric rice cooker, wherein the bracket is connected to a post body through a spring; the post body protrudes out of the top surface of the bracket under the action of the spring; a press type switch is arranged on the bracket and is located below the post body; the press type switch is connected in series with a power circuit of an electric heating disc of the electric rice cooker. The cooker body of the electric rice cooker when being arranged on a heating disc presses downwards the post body to enable the bottom end of the post body to be pressed on the press type switch, thereby putting through the power circuit of the electric heating disc of the electric rice cooker, and at this moment, the electric heating disc heats under the control of control units such as a single-chip; the post body moves upwards under the action of the spring to be out of touch with the press type switch when the cooker body is moved away, so that the press type switch is switched off, that is to say, the power circuit of the electric heating disc of the electric rice cooker is switched off, and the electric heating disc of the electric rice cooker stops heating to avoid a dry-heating condition.
Description
Technical field
The invention belongs to household electrical appliance technical field, specially refer to a kind of electric cooker anti-dry burning device.
Background technology
The heater circuit of traditional electric cooker mainly consists 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 during lower than 103 ℃, temperature-sensitive soft magnet is the same with permanent magnet has magnetic, when temperature is during higher than 103 ℃, temperature-sensitive soft magnet can lose magnetism suddenly.
While cooking, with hand, press starting switch, by drive link, make permanent magnet and soft magnet adhesive, its suction is greater than the elastic force of spring and the self gravitation of permanent magnet, thus permanent magnet can not fall, the closing of contact, circuit is connected, heating board starts heating.After meal boils, temperature continues to rise, and when reaching 103 ℃, soft magnet loses magnetism suddenly, and permanent magnet falls under the elastic force effect of self gravitation and spring, by drive link, makes contact separately, and 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, when the temperature of pot body surpasses after 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 leave heat-generating disc to pot body by automatic detection, therefore likely occurs the situation of dry combustion method, not only waste 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 that is arranged at electric cooker body below, and described support is connected with a cylinder by spring, and described cylinder projects upwards the end face in support under the effect of 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 be 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, and now electric hot tray can generate heat under the control of the control modules such as single-chip microcomputer; After pot body is removed, cylinder can move up under the effect of spring, thereby disengages with push switch, and push switch is disconnected, and 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 insulation material is made, the end of cylinder is passed down through housing, and is fixedly connected with metallic conduction sheet, so that metallic conduction sheet synchronously moves up and down with cylinder.When metallic conduction sheet moves down with cylinder, its two ends can with the first terminal, the second termination contact that are positioned at metallic conduction sheet below, 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, thereby 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 the first terminal, the second terminal downwards by cylinder, metallic conduction sheet there will be certain deformation, thereby guarantee that metal conducting strip is tight with contacting of the first terminal, the second terminal, even if there is small size vibration in cylinder, also can guarantee that metal conducting strip and the first terminal, the second terminal keep in touch, thereby avoid causing the situation of electric hot tray job insecurity to occur because of the vibration of cylinder.
Further, described support is provided with vertical guide pipe, and described cylinder is arranged in guide pipe, by guide pipe, can guarantee that cylinder can only vertically move, and guarantees that cylinder can sidesway and affect the normal work of electric hot tray.
Further, the top of described cylinder is provided with aluminium lid, in described aluminium lid, is fixed with thermistor.The control module of electric cooker can be realized limit temperature function by thermistor, when work, aluminium lid is made progress jacking by cylinder and contacts with pot body bottom surface, thermistor is arranged in aluminium lid, can make thermistor be close with the bottom surface of pot body all the time, make the temperature sensing of thermistor more accurate.
Electric cooker anti-dry burning device of the present invention is simple in structure, and the control by Purely mechanical guarantees that heating plate of electric cooker can not generate heat under the situation that there is no pot body, and reliable operation 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.
The specific embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail as the effect of the mutual alignment between the shape of each related member, structure, each several part and annexation, each several part and operation principle etc.
Embodiment 1:
As shown in Figure 1, the electric cooker anti-dry burning device of the present embodiment comprises the support 2 that is arranged at electric cooker body 1 below, described support 2 is connected with a cylinder 4 of being made by insulation material by spring 3, and described cylinder 4 projects upwards in the end face of 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 be 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, and now electric hot tray can generate heat under the control of the control modules such as single-chip microcomputer; After pot body 1 is removed, cylinder 4 can move up under the effect of spring 3, thereby disengages with push switch 5, push switch 5 is disconnected, the power circuit that is 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, by guide pipe 21, can guarantee that cylinder 4 can only vertically move, and guarantees that cylinder 4 can sidesway and affect the normal work of electric hot tray.
Further, the top of described cylinder 4 is provided with aluminium lid 6, in described aluminium lid 6, is fixed with thermistor 7.The control module of electric cooker can be realized limit temperature function by thermistor 7, when work, aluminium lid 6 is made progress jacking by cylinder 4 and contacts with pot body 1 bottom surface, thermistor 7 is arranged in aluminium lid 6, can make thermistor 7 be close with the bottom surface of pot body 1 all the time, make the temperature sensing of thermistor 7 more accurate.
As shown in Figure 2, described push switch 5 comprises insulation shell 51 and is arranged at the first terminal 52, the second terminal 53 and the metallic conduction sheet 54 in housing 51, described the first terminal 52, the second terminal 53 are positioned at the below of the both sides of metallic conduction sheet 54, the first terminal 52, the second terminal 53 are 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, so that metallic conduction sheet 54 synchronously moves up and down with cylinder 4.When metallic conduction sheet 54 moves down with cylinder 4, its two ends can contact with the first terminal 52, the second terminal 53 that are positioned at metallic conduction sheet 54 belows, make to be electrically connected between the first terminal 52, the 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, the second terminal 53, and the electrical connection between the first terminal 52, the second terminal 53 is disconnected, thereby disconnect the power circuit of electric cooker electric hot tray.
Claims (5)
1. an electric cooker anti-dry burning device, is characterized in that comprising the support that is arranged at electric cooker body below, and described support is connected with a cylinder by spring, and described cylinder projects upwards the end face in support under the effect of 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.
2. electric cooker anti-dry burning device according to claim 1, it is characterized in that 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 insulation material is made, the end of cylinder is passed down through housing, and be fixedly connected with metallic conduction sheet, so that metallic conduction sheet synchronously moves up and down with cylinder.
3. electric cooker anti-dry burning device according to claim 2, be characterised 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.
4. according to the electric cooker anti-dry burning device described in claim 1 or 2 or 3, be characterised in that described support is provided with vertical guide pipe, described cylinder is arranged in guide pipe.
5. according to the electric cooker anti-dry burning device described in claim 1 or 2 or 3, it is characterized in that the top of described cylinder is provided with aluminium lid, in described aluminium lid, be fixed with 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 |
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| Publication Number | Publication Date |
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| CN103690056A true CN103690056A (en) | 2014-04-02 |
| CN103690056B CN103690056B (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310704427.5A Active CN103690056B (en) | 2013-12-20 | 2013-12-20 | Electric cooker anti-dry burning device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609074A (en) * | 2015-02-05 | 2015-05-13 | 张益民 | Photovoltaic sterilization garbage can |
| CN104792433A (en) * | 2015-04-30 | 2015-07-22 | 佛山市川东磁电股份有限公司 | Vertical resistance sensor |
| CN107198437A (en) * | 2017-06-13 | 2017-09-26 | 泾县信达工贸有限公司 | A kind of anti-dry burning device of electric cooker electric hot tray |
| CN110254905A (en) * | 2019-04-18 | 2019-09-20 | 济宁延贝塑胶有限公司 | One kind can dispense portable tableware |
Citations (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 |
-
2013
- 2013-12-20 CN CN201310704427.5A patent/CN103690056B/en active Active
Patent Citations (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 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609074A (en) * | 2015-02-05 | 2015-05-13 | 张益民 | Photovoltaic sterilization garbage can |
| CN104792433A (en) * | 2015-04-30 | 2015-07-22 | 佛山市川东磁电股份有限公司 | Vertical resistance sensor |
| 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 |
| CN107198437A (en) * | 2017-06-13 | 2017-09-26 | 泾县信达工贸有限公司 | A kind of anti-dry burning device of electric cooker electric hot tray |
| 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 |
| CN110254905A (en) * | 2019-04-18 | 2019-09-20 | 济宁延贝塑胶有限公司 | One kind can dispense portable tableware |
| CN110254905B (en) * | 2019-04-18 | 2021-05-07 | 建德市思行五金有限公司 | Detachable portable tableware |
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| CN103690056B (en) | 2015-12-16 |
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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 |