CN204612828U - A kind of temperature sensor with multiple protection functions - Google Patents
A kind of temperature sensor with multiple protection functions Download PDFInfo
- Publication number
- CN204612828U CN204612828U CN201520166930.4U CN201520166930U CN204612828U CN 204612828 U CN204612828 U CN 204612828U CN 201520166930 U CN201520166930 U CN 201520166930U CN 204612828 U CN204612828 U CN 204612828U
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- support
- aluminium lid
- fixed head
- temperature sensor
- reed switch
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Abstract
The purpose of this utility model proposes a kind of temperature sensor with multiple protection functions, is applied to the electric heating appliances such as electric cooker, heat-generating disc electrified regulation dry combustion method when can either avoid not putting into pot, can prevent again heat-generating disc from heating up overheated.The temperature sensor with multiple protection functions of the present utility model comprises aluminium lid, support, spring, fixed head, described aluminium lid is fixedly connected with support, thermistor and hot melt insurance is had by support installing in aluminium lid, described thermistor and hot melt insurance are placed in insulating sleeve respectively, and are connected with the wire leading to aluminium lid outside respectively; Described support is located on fixed head by spring tressel; Key is that described support is fixed with permanent magnet and magnetic reed switch, and support is provided with the groove of opening towards fixed head direction between permanent magnet and magnetic reed switch; Described fixed head is provided with magnetic shielding sheet in the position of respective slot.
Description
Technical field
The utility model belongs to technical field of electric appliances, is related specifically to the temperature sensor of the overheated safeguard protection of the electric heating appliances such as electric cooker.
Background technology
At present, temperature sensor for electric cooker is generally all provided with hot melt insurance and the thermistor for temperature sensing, and when heat-generating disc is because surprisingly causing overheated, hot melt insurance is fused thus plays safeguard protection effect; And for example the patent No. is the utility model patent " magnetic shield anti-dry burning sensor for micro computer type rice cooker " of 200620054350.7, prevents the accident of heat-generating disc when not putting into pot generation maloperation to heat up overheated.Above-mentioned two kinds of temperature sensors are all without having overheating protection and avoid people to be the function of maloperation simultaneously.
Summary of the invention
The purpose of this utility model proposes a kind of temperature sensor with multiple protection functions, is applied to the electric heating appliances such as electric cooker, heat-generating disc electrified regulation dry combustion method when can either avoid not putting into pot, can prevent again heat-generating disc from heating up overheated.
The temperature sensor with multiple protection functions of the present utility model comprises aluminium lid, support, spring, fixed head, described aluminium lid is fixedly connected with support, thermistor and hot melt insurance is had by support installing in aluminium lid, described thermistor and hot melt insurance are placed in insulating sleeve respectively, and are connected with the wire leading to aluminium lid outside respectively; Described support is located on fixed head by spring tressel; Key is that described support is fixed with permanent magnet and magnetic reed switch, and support is provided with the mounting groove of opening towards fixed head direction between permanent magnet and magnetic reed switch; Described fixed head is provided with magnetic shielding sheet in the position of corresponding mounting groove.
Specifically, described magnetic reed switch is switch open in usual, and described magnetic reed switch is in parallel with thermistor; Or described magnetic reed switch is normally closed type switch, and described magnetic reed switch is connected with thermistor.
Be that switch open in usual illustrates that the principle of work of said temperature sensor is as follows with magnetic reed switch:
Thermistor and hot melt insurance all can detect the temperature of aluminium lid, and hot melt insurance fuses after aluminium lid temperature exceedes predetermined temperature, to prevent the heat-generating disc of electric heating appliance overheated because surprisingly causing.When interior pot is put into, interior pot oppresses aluminium lid under gravity, aluminium lid will move down and Compress Spring, now support also moves down with aluminium lid, magnetic shielding sheet on fixed head is extend in the groove of support, thus shielding permanent magnet is towards the magnetic field in magnetic reed switch direction, and magnetic reed switch is disconnected, thermistor by the temperature inversion of interior pot be electric signal transmission to the control module of electric heating appliance, to facilitate the power etc. of control module regulation heating dish.After interior pot takes out, support, aluminium lid move up under the elastic reaction of spring, thus make magnetic shielding sheet deviate from groove, and permanent magnet on magnetic reed switch, makes magnetic reed switch close towards the magnetic fields in magnetic reed switch direction.Because magnetic reed switch is in parallel with thermistor, resistance after magnetic reed switch closes is close to zero, thus by thermistor short circuit, control module to electric heating appliance sends a zero resistance signal, control module performs corresponding operation after receiving this signal, such as, say that the power supply disconnecting heat-generating disc is to avoid dry combustion method.Adopt normally closed type magnetic reed switch time, principle and above-mentioned on-off principle open in usual similar, be only the difference of series circuit and parallel circuit, repeat no more herein.
Above-mentioned magnetic shielding sheet can adopt iron plate.Above-mentioned insulating sleeve can be protected thermistor, hot melt.
Further, install fixing permanent magnet, magnetic reed switch for convenience, described support comprises insulation inner support and support arm, and insulation inner support is between aluminium lid and support arm, and support arm is fixedly connected with aluminium lid; Described permanent magnet, magnetic reed switch are all gripped by insulation inner support and support arm.Such structure is also convenient to be keeped in repair permanent magnet, magnetic reed switch and changes.
Further, described thermistor and hot melt insurance are all fixed on aluminium lid inner top by insulation inner support; The center of top of described insulation inner support is provided with step, and described thermistor is fixed on described step place; The top of described insulation inner support is provided with groove, and described hot melt insurance is fixed in groove, thermistor and hot melt insurance so not only can be avoided arbitrarily to roll, can also ensure that the aluminium lid temperature measured is accurate.
Further, described groove has one, and is positioned at the side of step; Or described groove has two, and lay respectively at the both sides of described step, a hot melt insurance is all fixed with in each groove, this temperature sensor can assemble the insurance of one or two hot melts like this, meet the different needs, when installation two hot melt insurances, these two hot melt insurances can be connected with live wire, zero line respectively, to disconnect zero line and live wire respectively, to improve security.
Further, the either flush of described thermistor and hot melt insurance is accurate, consistent to ensure that thermistor and hot melt insure the aluminium lid temperature measured.
Further, the bottom of described insulation inner support is provided with the pickup groove that Open Side Down, and described permanent magnet is positioned at pickup groove, and bottom surface and the support arm of permanent magnet offset; The bottom of described insulation inner support is provided with recess, and described magnetic reed switch is positioned at recess.Like this, described permanent magnet and magnetic reed switch are all fixed on the bottom of insulation inner support, not only convenient installation, and can reduce the impact of high temperature aluminium lid on permanent magnet, avoid the magnetic force of permanent magnet at high temperature to decay, thus increase the service life.
Further, described support arm is located on fixed head by spring tressel, and the bottom of support arm is provided with the guiding pin that several pass fixed head, and the bottom of described guiding pin is provided with the claw preventing support arm to be separated with fixed head; Or described support arm is located on fixed head by spring tressel, fixed head is provided with the guiding pin that several pass aluminium lid edge hole, and the top of described guiding pin is provided with the claw preventing aluminium lid to be separated with fixed head.Above-mentioned support arm, fixed head all can utilize metal stamping to form, and its guiding pin and claw are all made into integration with the main body of support arm or fixed head, not only easily manufactured, and cost-saving, can provide good support to insulation inner support, aluminium lid etc.
Further, the aluminium lid of this temperature sensor is also connected with ground wire, to ensure safety.
Heat-generating disc electrified regulation dry combustion method when the temperature sensor with multiple protection functions of the present utility model can either be avoided not putting into pot, can prevent again heat-generating disc from heating up overheated, be very suitable for the electric heating appliances such as electric cooker, have good commercial value.
Accompanying drawing explanation
Fig. 1 is the cut-open view with the temperature sensor of multiple protection functions of the present utility model.
Accompanying drawing indicates: 1, aluminium lid; 2, insulate inner support; 21, mounting groove; 22, pickup groove; 23, recess; 24, step; 25, groove; 3, support arm; 31, lead pin; 32, claw; 4, spring; 5, fixed head; 6, thermistor; 7, hot melt insurance; 8, permanent magnet; 9, magnetic reed switch; 10, magnetic shielding sheet; 11, wire; 12, ground wire; 13, insulating sleeve.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the effect and principle of work etc. of embodiment of the present utility model 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 the figure, the temperature sensor with multiple protection functions of the present embodiment comprises aluminium lid 1, insulation inner support 2, support arm 3, spring 4, fixed head 5, thermistor 6, hot melt insurance 7, permanent magnet 8, magnetic reed switch open in usual 9 and corresponding wire 11, insulation inner support 2 is between aluminium lid 1 and support arm 3, and support arm 3 is fixedly connected with aluminium lid 1; The inner top of aluminium lid 1 is all fixed in thermistor 6 and hot melt insurance 7 by insulation inner support 2, thermistor 6 and hot melt insurance 7 are placed in insulating sleeve 13 respectively, and are connected with the wire 11 leading to aluminium lid 1 outside respectively; Support arm 3 is located on fixed head 5 by spring 4 tressel; Permanent magnet 8, magnetic reed switch 9 are all gripped with support arm 3 by insulation inner support 2, and insulation inner support 2 is provided with the mounting groove 21 of opening towards fixed head 5 direction between permanent magnet 8 and magnetic reed switch 9; Described fixed head 5 is provided with magnetic shielding sheet 10 in the position of corresponding mounting groove 21; Described magnetic reed switch 9 is in parallel with thermistor 6.
The aluminium lid 1 of this temperature sensor is also connected with ground wire 12, to ensure safety.
Specifically, the bottom of described insulation inner support 2 is provided with the pickup groove 22 that Open Side Down, and described permanent magnet 8 is positioned at pickup groove 22, and bottom surface and the support arm 3 of permanent magnet 8 offset; The bottom of described insulation inner support 2 is provided with recess 23, and described magnetic reed switch 9 is positioned at recess 23.
Support arm 3 is located on fixed head 5 by spring 4 tressel, and the bottom of support arm 3 is provided with the guiding pin 31 that several pass fixed head 5, and the bottom of described guiding pin 31 is provided with the claw 32 preventing support arm 3 to be separated with fixed head 5.Above-mentioned support arm 3 can utilize metal stamping to form, and its guiding pin 31 is all made into integration with support arm main body with claw 32, not only easily manufactured, and cost-saving, can provide good support to insulation inner support 2, aluminium lid 1 etc.
For improving security, described hot melt insurance 7 has two, described two hot melts insurance 7 is arranged side by side the top in insulation inner support 2, and be respectively in the both sides of thermistor 6, the either flush of thermistor 6, hot melt insurance 7 also all contacts with aluminium lid 1 inner top surface, these two hot melt insurances 7 can be connected with live wire, zero line, respectively to disconnect zero line and live wire respectively.
The center of top of insulation inner support 2 is provided with step 24, and described thermistor 6 is fixed on described step 24 place; The top of described insulation inner support 2 is respectively provided with a groove 25 in step both sides, a hot melt insurance 7 is all fixed with in each groove 25, this temperature sensor can assemble two hot melt insurances 7 like this, these two hot melt insurances 7 are connected with live wire, zero line respectively, to disconnect zero line and live wire respectively, to improve security.Step 24 and groove 25 not only can avoid thermistor and hot melt insurance arbitrarily to roll, and can also ensure that the aluminium lid temperature measured is more accurate.
The either flush of thermistor 6 and hot melt insurance 7 is accurate, consistent to ensure the aluminium lid temperature that thermistor 6 and hot melt insurance 7 measure.
The principle of work of said temperature sensor is as follows:
Thermistor 6 and hot melt insurance 7 all can detect the temperature of aluminium lid 1, and hot melt insurance 7 fuses after aluminium lid 1 temperature exceedes predetermined temperature, to prevent the heat-generating disc of electric heating appliance overheated because surprisingly causing.When interior pot is put into, aluminium lid 1 oppressed under gravity by interior pot, aluminium lid 1 will move down and Compress Spring 4, now insulation inner support 2, support arm 3 also move down with aluminium lid 1, the magnetic shielding sheet 10 on fixed head 5 is made to extend in the mounting groove 21 of support, thus shielding permanent magnet 8 is towards the magnetic field in magnetic reed switch 9 direction, magnetic reed switch 9 is disconnected, thermistor 6 by the temperature inversion of interior pot be electric signal transmission to the control module of electric heating appliance, to facilitate the power etc. of control module regulation heating dish.After interior pot takes out, insulation inner support 2, support arm 3, aluminium lid 1 synchronously move up under the elastic reaction of spring 4, thus making magnetic shielding sheet 10 deviate from mounting groove 21, permanent magnet 8 on magnetic reed switch 9, makes magnetic reed switch 9 close towards the magnetic fields in magnetic reed switch 9 direction.Because magnetic reed switch 9 is in parallel with thermistor 6, resistance after magnetic reed switch 9 is closed is close to zero, thus by thermistor 6 short circuit, control module to electric heating appliance sends a zero resistance signal, control module performs corresponding operation after receiving this signal, such as, say that the power supply disconnecting heat-generating disc is to avoid dry combustion method.
Claims (10)
1. one kind has the temperature sensor of multiple protection functions, comprise aluminium lid, support, spring, fixed head, described aluminium lid is fixedly connected with support, thermistor and hot melt insurance is had by support installing in aluminium lid, described thermistor and hot melt insurance are placed in insulating sleeve respectively, and are connected with the wire leading to aluminium lid outside respectively; Described support is located on fixed head by spring tressel; It is characterized in that described support is fixed with permanent magnet and magnetic reed switch, support is provided with the mounting groove of opening towards fixed head direction between permanent magnet and magnetic reed switch; Described fixed head is provided with magnetic shielding sheet in the position of corresponding mounting groove.
2. the temperature sensor with multiple protection functions according to claim 1, it is characterized in that described magnetic reed switch is switch open in usual, described magnetic reed switch is in parallel with thermistor; Or described magnetic reed switch is normally closed type switch, and described magnetic reed switch is connected with thermistor.
3. the temperature sensor with multiple protection functions according to claim 1 and 2, is characterized in that described support comprises insulation inner support and support arm, and insulation inner support is between aluminium lid and support arm, and support arm is fixedly connected with aluminium lid; Described permanent magnet, magnetic reed switch are all gripped by insulation inner support and support arm.
4. the temperature sensor with multiple protection functions according to claim 3, is characterized in that described thermistor and hot melt insurance are all fixed on aluminium lid inner top by insulation inner support; The center of top of described insulation inner support is provided with step, and described thermistor is fixed on described step place; The top of described insulation inner support is provided with groove, and described hot melt insurance is fixed in groove.
5. the temperature sensor with multiple protection functions according to claim 4, is characterized in that described groove has one, and is positioned at the side of step; Or described groove has two, and lay respectively at the both sides of described step, in each groove, be all fixed with a hot melt insurance.
6. the temperature sensor with multiple protection functions according to claim 5, is characterized in that the either flush of described thermistor and hot melt insurance.
7. the temperature sensor with multiple protection functions according to claim 3, it is characterized in that the bottom of described insulation inner support is provided with the pickup groove that Open Side Down, described permanent magnet is positioned at pickup groove, and bottom surface and the support arm of permanent magnet offset; The bottom of described insulation inner support is provided with recess, and described magnetic reed switch is positioned at recess.
8. the temperature sensor with multiple protection functions according to claim 3; it is characterized in that described support arm is located on fixed head by spring tressel; the bottom of support arm is provided with the guiding pin that several pass fixed head, and the bottom of described guiding pin is provided with the claw preventing support arm to be separated with fixed head.
9. the temperature sensor with multiple protection functions according to claim 3; it is characterized in that described support arm is located on fixed head by spring tressel; fixed head is provided with the guiding pin that several pass aluminium lid edge hole, and the top of described guiding pin is provided with the claw preventing aluminium lid to be separated with fixed head.
10. the temperature sensor with multiple protection functions according to claim 1 and 2, is characterized in that described aluminium lid is connected with ground wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520166930.4U CN204612828U (en) | 2015-03-24 | 2015-03-24 | A kind of temperature sensor with multiple protection functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520166930.4U CN204612828U (en) | 2015-03-24 | 2015-03-24 | A kind of temperature sensor with multiple protection functions |
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| Publication Number | Publication Date |
|---|---|
| CN204612828U true CN204612828U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520166930.4U Expired - Fee Related CN204612828U (en) | 2015-03-24 | 2015-03-24 | A kind of temperature sensor with multiple protection functions |
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| CN (1) | CN204612828U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784180A (en) * | 2016-04-18 | 2016-07-20 | 佛山市川东磁电股份有限公司 | Sensor insulation adapting structure |
| CN107787053A (en) * | 2017-10-19 | 2018-03-09 | 佛山市川东磁电股份有限公司 | A kind of electric heater inner bag contacts temperature controller |
| CN109549498A (en) * | 2017-09-27 | 2019-04-02 | 佛山市川东磁电股份有限公司 | A kind of electric cooker temperature control element |
| CN110274701A (en) * | 2019-05-29 | 2019-09-24 | 广东格兰仕集团有限公司 | A kind of temperature sensor fixture of cooking appliance evaporating pan |
| CN112154308A (en) * | 2018-12-11 | 2020-12-29 | 株式会社芝浦电子 | Temperature sensor and cooking device |
-
2015
- 2015-03-24 CN CN201520166930.4U patent/CN204612828U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784180A (en) * | 2016-04-18 | 2016-07-20 | 佛山市川东磁电股份有限公司 | Sensor insulation adapting structure |
| CN105784180B (en) * | 2016-04-18 | 2019-04-02 | 佛山市川东磁电股份有限公司 | A kind of sensor insulation adapter structure |
| CN109549498A (en) * | 2017-09-27 | 2019-04-02 | 佛山市川东磁电股份有限公司 | A kind of electric cooker temperature control element |
| CN107787053A (en) * | 2017-10-19 | 2018-03-09 | 佛山市川东磁电股份有限公司 | A kind of electric heater inner bag contacts temperature controller |
| CN107787053B (en) * | 2017-10-19 | 2020-10-09 | 佛山市川东磁电股份有限公司 | Electric heater inner container contact temperature controller |
| CN112154308A (en) * | 2018-12-11 | 2020-12-29 | 株式会社芝浦电子 | Temperature sensor and cooking device |
| CN112154308B (en) * | 2018-12-11 | 2022-07-12 | 株式会社芝浦电子 | Temperature sensor and cooking device |
| CN110274701A (en) * | 2019-05-29 | 2019-09-24 | 广东格兰仕集团有限公司 | A kind of temperature sensor fixture of cooking appliance evaporating pan |
| CN110274701B (en) * | 2019-05-29 | 2024-04-09 | 广东格兰仕集团有限公司 | Temperature sensor fixing device of cooking appliance evaporating dish |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20160324 |
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| CF01 | Termination of patent right due to non-payment of annual fee |