CN201926130U - Electric water heater - Google Patents
Electric water heater Download PDFInfo
- Publication number
- CN201926130U CN201926130U CN2010206434552U CN201020643455U CN201926130U CN 201926130 U CN201926130 U CN 201926130U CN 2010206434552 U CN2010206434552 U CN 2010206434552U CN 201020643455 U CN201020643455 U CN 201020643455U CN 201926130 U CN201926130 U CN 201926130U
- Authority
- CN
- China
- Prior art keywords
- temperature sensor
- electric heater
- water tank
- water
- control circuit
- 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 discloses an electric water heater comprising a water tank, wherein a water inlet pipe and a water outlet pipe are arranged on the water tank; an electric heater is arranged in the water tank; a first temperature sensor is arranged at the top of the water tank; and the first temperature sensor is electrically connected with a control circuit. The electric water heater is high in control precision and the safety of the electric water heater is improved.
Description
Technical field
The utility model relates to a kind of electric heater.
Background technology
In the existing electric heater temperature controller is arranged all, by temperature controller temperature is carried out sensing, and this temperature signal is transferred to control circuit, if sensed temperature surpasses the temperature of setting, control circuit disconnects the power supply of electric heater, avoids electric heater to be burnt out.
In the water tank of existing electric heater a temperature sensor is only arranged, sensing to temperature is inaccurate, as: along with the minimizing of the water yield in the water tank, when electric heater wherein a part be exposed in the water, and temperature sensor is still under water, so just cause being exposed to airborne that part of electrical heating not with the water heat exchange, and directly the auxilliary top that is mapped to water tank of heat, cause electrical heating and water tank upper (and parts of water tank upper) to be burnt out, and this moment, temperature sensor only senses the temperature in the water, so,, very easily do not cause security incident timely with the power supply disconnection of electric heater.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, and a kind of electric heater is provided, and control accuracy of the present utility model is higher, has improved the security of electric heater.
Its technical scheme is as follows.
Below the further technical scheme of the utility model is described.
A kind of electric heater comprises water tank, is provided with water inlet pipe and outlet pipe on water tank, is provided with electric heater in water tank, is provided with first temperature sensor in tank top, and this first temperature sensor and control circuit are electrically connected.
Also comprise second temperature sensor, this second temperature sensor and described control circuit are electrically connected.
Described first temperature sensor is located at the tank top position, and described second temperature sensor is located at water tank middle part or bottom position.
Described first temperature sensor be positioned at described electric heater directly over.
Described control circuit comprises control signal input, contactor, power input, first temperature sensor and contactor are connected on the control signal input, and the switch portion and the electric heater of the switch portion of contactor, second temperature sensor are connected on the power input.
On described water tank, also be provided with pressure gauge connection and safety valve.
Below advantage of the present utility model is described.
1, owing to be provided with two temperature sensors (i.e. first temperature sensor, second temperature sensor) in water tank, can carry out the temperature of diverse location in the sensing, particularly water tank more accurately to water temperature, the accuracy of sensing is higher.
2, second temperature sensor is located at the middle part of water tank or bottom, first temperature sensor is located at the top of water tank, cause electric heater to expose as if lack of water in the water tank, then the water that contacts with electric heater can become water vapour immediately, and the temperature of water vapour is sharply raise, this moment, first temperature sensor can sense, control circuit disconnects the power supply of water heater, avoids electric heater is burnt out.
Description of drawings
Fig. 1 is the structure chart of the described electric heater of the utility model embodiment.
Fig. 2 is the electrical control figure of the described electric heater of the utility model embodiment.
Description of reference numerals: 1, water tank, 2, water inlet pipe, 3, outlet pipe, 4, electric heater, 5, first temperature sensor, 6, second temperature sensor, 7, pressure gauge connection, 8, safety valve, 9, the control signal input, 10, power input, 11, contactor.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
As shown in Figure 1 and Figure 2, a kind of electric heater, comprise water tank 1, on water tank 1, be provided with water inlet pipe 2 and outlet pipe 3, be provided with electric heater 4 in water tank 1, be provided with first temperature sensor 5 in water tank 1, this first temperature sensor 5 is electrically connected with control circuit, also be provided with second temperature sensor 6 on water tank 1, this second temperature sensor 6 also is electrically connected with control circuit.
Wherein, on water tank 1, also be provided with pressure gauge connection 7 and safety valve 8.Second temperature sensor 6 is located at water tank 1 middle part or bottom position, and first temperature sensor 5 is located at the tip position of water tank 1, first temperature sensor 5 be positioned at described electric heater 4 directly over.
Described control circuit comprises control signal input 9, contactor 11, power input 10, first temperature sensor 5 is connected on the control signal input 9 with contactor 11, and the switch portion and the electric heater 4 of the switch portion of contactor 11, second temperature sensor 6 are connected on the power input 10.
Present embodiment has following advantage.
1, owing in water tank 1, be provided with two temperature sensors (i.e. first temperature sensor 5, second temperature sensor 6), can carry out sensing to water temperature more accurately, the temperature of diverse location in the water tank 1 particularly, the accuracy of sensing is higher.
2, second temperature sensor 6 is located at the middle part of water tank 1 or bottom, first temperature sensor 5 is located at the top of water tank 1, cause electric heater 4 to expose as if lack of water in the water tank 1, then the water that contacts with electric heater 4 can become water vapour immediately, and the temperature of water vapour is sharply raise, this moment, first temperature sensor 5 can sense, control circuit disconnects the power supply of water heater, avoids electric heater is burnt out.
Only be specific embodiment of the utility model below, do not limit protection domain of the present utility model with this; Any replacement and the improvement done on the basis of not violating the utility model design all belong to protection domain of the present utility model.
Claims (6)
1. an electric heater comprises water tank, is provided with water inlet pipe and outlet pipe on water tank, is provided with electric heater in water tank, it is characterized in that, is provided with first temperature sensor in tank top, and this first temperature sensor and control circuit are electrically connected.
2. electric heater according to claim 1 is characterized in that, described first temperature sensor be positioned at described electric heater directly over.
3. electric heater according to claim 1 is characterized in that, also is provided with pressure gauge connection and safety valve on described water tank.
4. as electric heater as described in each in the claim 1 to 3, it is characterized in that also comprise second temperature sensor, this second temperature sensor and described control circuit are electrically connected.
5. as electric heater as described in the claim 4, it is characterized in that described second temperature sensor is located at water tank middle part or bottom position.
6. as electric heater as described in the claim 4, it is characterized in that, described control circuit comprises control signal input, contactor, power input, first temperature sensor and contactor are connected on the control signal input, and the switch portion and the electric heater of the switch portion of contactor, second temperature sensor are connected on the power input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206434552U CN201926130U (en) | 2010-12-06 | 2010-12-06 | Electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206434552U CN201926130U (en) | 2010-12-06 | 2010-12-06 | Electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201926130U true CN201926130U (en) | 2011-08-10 |
Family
ID=44429977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206434552U Expired - Fee Related CN201926130U (en) | 2010-12-06 | 2010-12-06 | Electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201926130U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449158A (en) * | 2017-08-25 | 2017-12-08 | 王彤宇 | Heat energy water cycle temperature inspection and control safe and highly efficient operation system |
-
2010
- 2010-12-06 CN CN2010206434552U patent/CN201926130U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449158A (en) * | 2017-08-25 | 2017-12-08 | 王彤宇 | Heat energy water cycle temperature inspection and control safe and highly efficient operation system |
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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: 20110810 Termination date: 20181206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |