CN202617393U - Portable automatically switching water heater - Google Patents
Portable automatically switching water heater Download PDFInfo
- Publication number
- CN202617393U CN202617393U CN 201220157726 CN201220157726U CN202617393U CN 202617393 U CN202617393 U CN 202617393U CN 201220157726 CN201220157726 CN 201220157726 CN 201220157726 U CN201220157726 U CN 201220157726U CN 202617393 U CN202617393 U CN 202617393U
- Authority
- CN
- China
- Prior art keywords
- circuit
- thermistor
- electromagnetic relay
- heating
- water heater
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an automatically switching water heater, which comprises a plug (1), a sliding rheostat (2), a thermistor (3), a heating resistance wire (4), and an electromagnetic relay (5), wherein the electromagnetic relay (5) is connected with the thermistor (3) and the sliding rheostat (2) in series by a conductor which is represented by a solid line in the figure, and acts as an automatic switch. When the circuit is connected with a power supply, the circuit heats if the water temperature is low; when the water boils, the circuit stops heating automatically; and the circuit heats again automatically if the water temperature drops, thereby being capable of preventing a thermos bottle from exploding because of long time heating, and preventing people from being injured by the exploded thermos bottle.
Description
Technical field:
The present invention designs a kind of water heater, a kind of water heater that has automatic switch.
Background technology:
At present there is a kind of water heater to be used in vacuum flask, heating up water on the market, but, causes bursting of vacuum flask to such an extent as to heat up water overlong time owing in the process of heating up water, sometimes can pass out of mind; Be easy to hurt the people, though having installed on some water heater reports to the police is provided with; But; Those warning devices have played not effect sometimes at all, so I think that a kind of Portable Automatic switch water heater is necessary.
The utility model technology contents:
Technical problem to be solved by this invention is to provide a kind of automatic switch, can so just can not cause casualties because of bursting of vacuum flask in the outage automatically of water boiling back.
For overcoming the above problems, the utility model technical scheme is following:
A kind of automatic switch water heater comprises plug (1), slide rheostat (2), thermistor (3); Heating resistance wire (4); Electromagnetic relay (5), said electromagnetic relay (5) and thermistor (3), slide rheostat (2) has lead (solid line place among the figure) to be series at circuit as automatic switch.
Description of drawings:
Fig. 1 is the integrated circuit figure of the embodiment of the invention.
Embodiment:
Below in conjunction with accompanying drawing and embodiment the utility model technology is further specified.
As shown in the figure: the utility model technology is mainly by plug (1), slide rheostat (2), and thermistor (3), heating resistance wire (4), electromagnetic relay (5) is formed.
Said slide rheostat (2) thermistor (3) and electromagnetic relay (5) place in circuit of connecting with plug (1), as the control automatic switch, heating resistance wire (4) place in circuit, is controlled heating resistance wire (4) as automatic switch with electromagnetic relay (5).
When water temperature was low, the resistance of thermistor (3) was very big, does not have electric current in the control circuit, and electromagnetic relay (5) then is in off-state; The circuit of heating resistance wire (4) is connected, and is in febrile state, and temperature raises when water seethes with excitement, and thermistor (3) resistance diminishes; Then in the control circuit electric current is arranged, electromagnetic relay (5) is connected, and operating circuit breaks off, and heating resistance wire (4) stops heating; If water temperature reduces, circuit will be connected automatically and continue heating, thereby reaches the purpose of automatic control switch.
The present invention uses like this;
When this circuit inserted power supply, water temperature was lower, the circuit working heating, and when water boiling will stopping automatically heating, water temperature reduces and can heat automatically again, so just can avoid hurting the people because of long-time heating causes bursting of vacuum flask.
Claims (3)
1. a portable automatic switch water heater is characterized in that: comprise plug (1), slide rheostat (2); Thermistor (3), heating resistance wire (4), electromagnetic relay (5); Said electromagnetic relay (5) and thermistor (3), slide rheostat (2) has lead to be series at circuit as automatic switch.
2. portable automatic switch water heater according to claim 1 is characterized in that: when water temperature was low, the resistance of thermistor (3) was very big; There is not electric current in the control circuit; Electromagnetic relay (5) then is in off-state, and the circuit of heating resistance wire (4) is connected, and is in febrile state.
3. portable automatic switch water heater according to claim 1 is characterized in that: temperature raises when water seethes with excitement, and thermistor (3) resistance diminishes; Then in the control circuit electric current is arranged, electromagnetic relay (5) is connected, and operating circuit breaks off; Heating resistance wire (4) stops heating; If water temperature reduces, circuit will be connected automatically and continue heating, thereby reaches the purpose of automatic control switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220157726 CN202617393U (en) | 2012-04-09 | 2012-04-09 | Portable automatically switching water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220157726 CN202617393U (en) | 2012-04-09 | 2012-04-09 | Portable automatically switching water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202617393U true CN202617393U (en) | 2012-12-19 |
Family
ID=47351058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220157726 Expired - Fee Related CN202617393U (en) | 2012-04-09 | 2012-04-09 | Portable automatically switching water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202617393U (en) |
-
2012
- 2012-04-09 CN CN 201220157726 patent/CN202617393U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20140409 |