CN201211267Y - Temperature adjustable electric hand warmer - Google Patents
Temperature adjustable electric hand warmer Download PDFInfo
- Publication number
- CN201211267Y CN201211267Y CNU2008200889330U CN200820088933U CN201211267Y CN 201211267 Y CN201211267 Y CN 201211267Y CN U2008200889330 U CNU2008200889330 U CN U2008200889330U CN 200820088933 U CN200820088933 U CN 200820088933U CN 201211267 Y CN201211267 Y CN 201211267Y
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- module
- heating
- temperature
- hand warmer
- circuit control
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- Expired - Fee Related
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Abstract
The utility model provides a temperature-adjustable electric hand warmer, which comprises a heating module, a heat sensing module and a heating circuit control module. The electric hand warmer is characterized in that the heating module, the heat sensing module and the heating circuit control module are connected in sequence. The heat sensing module monitors temperature of the heating module through a thermal resistor; after the temperature is higher than the temperature set by a user, the heating circuit control module is disconnected with the heating circuit; and after the temperature is gradually reduced, the heating circuit control module is reconnected with the heating circuit, thereby achieving the aim of temperature control.
Description
Affiliated technical field
This utility model relates to a kind of hand warmer, especially can thermoregulated electric hand warmer.
Background technology
Hand warmer is the article of often using in people's daily life, and traditional hand warmer is to put into plastic bag with hot water, and is pretty troublesome in the use, and the time of insulation is not long.The water hand warmer that some electric heating are also arranged now come heat supply by the water in the heating water heating device, but this mode is dangerous on the one hand, after temperature is too high, cause the breakage of plastics appearance easily after flow of hot water go out to hurt sb.'s feelings.
Summary of the invention
Need often to change the inconvenience of hot water in order to overcome common hand warmer, and the unsafe problems of the hand warmer temperature of electric heating after too high, this utility model provide a kind of can thermoregulated electric hand warmer, not only do not need to change hot water, and heating-up temperature is adjustable, can not cause potential safety hazard.This utility model is easy to use, safe, and is with low cost.
The technical scheme that its technical problem that solves this utility model adopts is: can comprise heating module, hot sensing module, heater circuit control module by thermoregulated electric hand warmer, it is characterized in that: heating module, hot sensing module, heater circuit control module connect successively.Hot sensing module is by the temperature of critesistor monitoring heating module, temperature is higher than after user's setting, disconnects heater circuit by the heater circuit control module, after temperature reduces gradually, the heater circuit control module reconnects heater circuit, reaches temperature controlled purpose.
The beneficial effects of the utility model are, do not need to change heatable substance, and heating-up temperature is adjustable, and is easy to use, safe.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further specified.
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is an electric structure chart of the present utility model.
Among the figure, 1. heating module, 2. hot sensing module, 3. heater circuit control module.
The specific embodiment
In Fig. 1, can comprise heating module 1, hot sensing module 2, heater circuit control module 3 by thermoregulated electric hand warmer, it is characterized in that: heating module 1, hot sensing module 2, heater circuit control module 3 connect successively.The heating material of heating module 1 adopts electric furnace heating wire, and insulation material adopts asbestos cloth.Hot sensing module 2 is by the temperature of critesistor monitoring heating module 1, by the potentiometer attemperation, temperature is higher than after user's setting, disconnect heater circuit by heater circuit control module 3, after temperature reduces gradually, heater circuit control module 3 reconnects heater circuit, reaches temperature controlled purpose.
In Fig. 2, hot sensing module 2 adopts dual operational amplifier LM358 module.
In Fig. 2, dual operational amplifier LM358 is connected into window comparator, and after switch QS1 closure, voltage is about 6V, is higher than foot No. 5, is lower than foot No. 2.No. 2 feet of amplifier A1 are higher than foot, A1 output low level No. 3.No. 6 feet of amplifier A2 are higher than foot, A2 output low level No. 5.Audion, VT1 end,, the VT2 saturation conduction, catalyst J1 gets electric adhesive, display lamp VD1 lights, heating Bao Dedian heating.Along with the rising of temperature, the resistance of critesistor reduces in the heating bag, and A point current potential descends.When A point current potential was lower than No. 5 feet, A2 exported high level, the VT1 saturation conduction, and VT2 ends, and the J1 dead electricity disconnects, and VD1 extinguishes.Along with the continuity of time, the RT temperature descends, and resistance rises, and A point current potential rises, when A point current potential is higher than No. 5 feet, and the A2 output low level.Catalyst J1 gets electric adhesive.So just can keep a steady temperature.
Regulator potentiometer RW can obtain different constant temperature values.In use, no matter RT is that RT damage, open circuit or short circuit can both make A point current potential drop on outside the window voltage of LM358 as heat sensor, and promptly LM358 No. 1 foot or No. 7 feet always have an output high level that J1 is disconnected, can not cause the heating bag overheated, reach the purpose of safe handling.
Claims (2)
1. one kind can comprise heating module (1), hot sensing module (2), heater circuit control module (3) by thermoregulated electric hand warmer, it is characterized in that: heating module (1), hot sensing module (2), heater circuit control module (3) connect successively, the heating material of heating module (1) adopts electric furnace heating wire, and insulation material adopts asbestos cloth.
2. according to claim 1 can thermoregulated electric hand warmer, it is characterized in that: hot sensing module (2) adopts dual operational amplifier LM358 module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200889330U CN201211267Y (en) | 2008-06-18 | 2008-06-18 | Temperature adjustable electric hand warmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200889330U CN201211267Y (en) | 2008-06-18 | 2008-06-18 | Temperature adjustable electric hand warmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201211267Y true CN201211267Y (en) | 2009-03-25 |
Family
ID=40495420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200889330U Expired - Fee Related CN201211267Y (en) | 2008-06-18 | 2008-06-18 | Temperature adjustable electric hand warmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201211267Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425152A (en) * | 2012-05-21 | 2013-12-04 | 海洋王（东莞）照明科技有限公司 | Temperature control circuit of incubator |
| CN104791890A (en) * | 2015-03-31 | 2015-07-22 | 广西智通节能环保科技有限公司 | Intelligent control electric warming device based on single chip microcomputer |
| CN110559526A (en) * | 2019-09-12 | 2019-12-13 | 阳权 | Control circuit of medical nutrient solution heater |
-
2008
- 2008-06-18 CN CNU2008200889330U patent/CN201211267Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425152A (en) * | 2012-05-21 | 2013-12-04 | 海洋王（东莞）照明科技有限公司 | Temperature control circuit of incubator |
| CN103425152B (en) * | 2012-05-21 | 2017-07-28 | 海洋王（东莞）照明科技有限公司 | Temperature control circuit of incubator |
| CN104791890A (en) * | 2015-03-31 | 2015-07-22 | 广西智通节能环保科技有限公司 | Intelligent control electric warming device based on single chip microcomputer |
| CN110559526A (en) * | 2019-09-12 | 2019-12-13 | 阳权 | Control circuit of medical nutrient solution heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Lane 199, No. 78-102, South st street, Yinzhou District, Zhejiang, Ningbo Province, 315100 Patentee after: Han Yang Address before: Ningbo City, Zhejiang province Yinzhou District Ji Town rain Yang Mdt InfoTech Ltd, zip code: 315171 Patentee before: Han Yang |
|
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HAN YANG Free format text: NEW ADDRESS: 78-102, LANE 199, DAOXUESHI ROAD, SHOUNAN STREET, YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, ZIP CODE:315100 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090325 |