CN202993625U - Electric heating auxiliary dry heating resistant control device - Google Patents
Electric heating auxiliary dry heating resistant control device Download PDFInfo
- Publication number
- CN202993625U CN202993625U CN 201220691313 CN201220691313U CN202993625U CN 202993625 U CN202993625 U CN 202993625U CN 201220691313 CN201220691313 CN 201220691313 CN 201220691313 U CN201220691313 U CN 201220691313U CN 202993625 U CN202993625 U CN 202993625U
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- China
- Prior art keywords
- storage tank
- control device
- water
- electric heating
- triode
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Farming Of Fish And Shellfish (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
An electric heating auxiliary dry heating resistant control device relates to solar water heaters, in particular to an electric heating auxiliary dry heating resistant control device for preventing dry heating of an electric heating device via detecting the level of water in a water storage tank. The electric heating auxiliary dry heating resistant control device is installed in the water storage tank and connected with the electric heating device, and is characterized by comprising a water level measurement electric bridge, an amplifier and a triode, wherein the water level measurement electric bridge is mounted in the water storage tank; the water level measurement electric bridge, the amplifier and the triode are connected in series sequentially, and the triode is installed in a loop of the electric heating device. The electric heating auxiliary dry heating resistant control device has a simple structure and reasonable design, is convenient to use, controls the switch on/off of the loop of the electric heating device via detecting that whether water is in the water storage tank, so that energy is saved, and besides, the service life of the electric heating device can be prolonged.
Description
Technical field
The utility model relates to solar water heater, and is especially a kind of by detecting water level in storage tank, avoids the auxiliary control device preventing dry fry of electrical heating of electric heater unit dry combustion method.
Background technology
Solar water heater uses universal and promotes all very fast due to convenient, energy-conservation and pollution-free.But single dependence solar energy heating produces hot water, runs into rainy weather and just is unable to supply hot water.Therefore the technology that at present generally adopts a kind of solar energy and electric auxiliary heating to combine when fine, adopts solar energy to produce hot water, when rainy weather, changes into and adopts electrical heating to produce hot water.Combine now the solar water heater of electric heater unit, usually adopt water temperature to control, measures, gather water temperature information in storage tank by cooling-water temperature sensor, with safe, the stable operation of assurance solar water heater electronic control system.
the electric heater unit that adopts water temperature to control, cooling-water temperature sensor is installed in storage tank, when water temperature reduces, the electric heating equipment energising, start, the electric heater unit outage quits work when water temperature over-high, due to the hot water floating, cold water descends, usually cooling-water temperature sensor is arranged on storage tank top or middle part, when in storage tank during lack of water, what cooling-water temperature sensor detected is only the temperature of air in storage tank, cause the electric heating equipment dry combustion method, make surrounding air heat up, too high temperature of air is cut off the power supply, air themperature reduces, electrical heating is restarted, because air flow property is large, cause cooling-water temperature sensor ambient air variations in temperature to be exceedingly fast, make electric heater unit repeatedly start, not only cause energy waste, also can reduce the service life of electric heater unit.
Summary of the invention
To be solved in the utility model is exactly existing solar water heater with electric heater unit, if lack of water in storage tank, the electric heating equipment dry combustion method, not only waste energy, also can reduce the electric heater unit problem in service life, a kind of auxiliary control device preventing dry fry of electrical heating that can effectively prevent electric heater unit dry combustion method under exsiccosis is provided.
Control device preventing dry fry is assisted in electrical heating of the present utility model, be arranged in storage tank, be connected with electric heater unit, it is characterized in that this control device comprises level measuring electric bridge, amplifier and triode, the level measuring electric bridge is arranged in storage tank, level measuring electric bridge, amplifier and triode are sequentially connected, and triode is arranged on the loop of electric heater unit.
Described level measuring electric bridge is comprised of a pulse power V and four branch roads, on four branch roads, order arranges four resistance, R1, R2, R3 and Rs, be connected pulse power V on node between the node between R1, R2 and R3, Rs, output signal Vo is set on the node between the node between R1, Rs and R2, R3, R1=R2 wherein, R1 and R2 resistance are greater than the R3 resistance, and Rs is the water power resistance in storage tank.
When water and water level are arranged in storage tank higher than the measurement waterline, Rs is the resistance of water, this moment, electric bridge output signal Vo was for just, transfer to triode after amplifying through amplifier, the circuit closed at triode place, the electric heater unit energising, after water temperature was reduced to design temperature, electric heater unit started and heats; Anhydrous in storage tank, Rs is air resistance, and its resistance is ∞, and this moment, electric bridge output signal Vo was for negative, and loop, triode place disconnects, even if this moment, water temperature reduced, due to the electric heater unit loop open circuit, electric heater unit can not start heating.
Control device preventing dry fry is assisted in electrical heating of the present utility model, and is simple in structure, reasonable in design, easy to use, detecting by electric bridge has anhydrously in storage tank, control the disconnection in electric heater unit loop with closed, water is arranged in storage tank, electric heater unit circuit closed, the heating of can switching on, anhydrous in storage tank, the electric heater unit loop disconnects, avoid the electric heater unit dry combustion method, not only energy savings, and the service life that can also improve electric heater unit.
Description of drawings
Fig. 1 is the utility model structural representation.
Wherein, level measuring electric bridge 1, amplifier 2, triode 3, electric heater unit 4.
The specific embodiment
Embodiment 1: control device preventing dry fry is assisted in a kind of electrical heating, be arranged in storage tank, be connected with electric heater unit 4, it is characterized in that this control device comprises level measuring electric bridge 1, amplifier 2 and triode 3, level measuring electric bridge 1 is arranged in storage tank, level measuring electric bridge 1, amplifier 2 and triode 3 order series connection, triode 3 is arranged on the loop of electric heater unit 4.Level measuring electric bridge 1 is comprised of a pulse power V and four branch roads, on four branch roads, order arranges four resistance, R1, R2, R3 and Rs, be connected pulse power V on node between the node between R1, R2 and R3, Rs, output signal Vo is set on the node between the node between R1, Rs and R2, R3, R1=R2 wherein, R1 and R2 resistance are greater than the R3 resistance, and Rs is the water power resistance in storage tank.
When water and water level are arranged in storage tank higher than the measurement waterline, Rs is the resistance of water, this moment, electric bridge output signal Vo was for just, transfer to triode 3 after amplifying through amplifier 2, the circuit closed at triode 3 places, electric heater unit 4 energisings, after water temperature was reduced to design temperature, electric heater unit 4 started and heats; Anhydrous in storage tank, Rs is air resistance, and its resistance is ∞, and this moment, electric bridge output signal Vo was for negative, triode 3 loops, place disconnections, even if this moment, water temperature reduced, due to electric heater unit 4 loop open circuit, 4 of electric heater units can not start heating.
Claims (2)
1. control device preventing dry fry is assisted in an electrical heating, be arranged in storage tank, be connected with electric heater unit (4), it is characterized in that this control device comprises level measuring electric bridge (1), amplifier (2) and triode (3), level measuring electric bridge (1) is arranged in storage tank, level measuring electric bridge (1), amplifier (2) and the series connection of triode (3) order, triode (3) is arranged on the loop of electric heater unit (4).
2. control device preventing dry fry is assisted in electrical heating as claimed in claim 1, it is characterized in that described level measuring electric bridge (1) is comprised of a pulse power V and four branch roads, on four branch roads, order arranges four resistance, R1, R2, R3 and Rs, be connected pulse power V on node between the node between R1, R2 and R3, Rs, output signal Vo be set, wherein R1=R2 on the node between the node between R1, Rs and R2, R3, R1 and R2 resistance are greater than the R3 resistance, and Rs is the water power resistance in storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691313 CN202993625U (en) | 2012-12-14 | 2012-12-14 | Electric heating auxiliary dry heating resistant control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691313 CN202993625U (en) | 2012-12-14 | 2012-12-14 | Electric heating auxiliary dry heating resistant control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202993625U true CN202993625U (en) | 2013-06-12 |
Family
ID=48564800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220691313 Expired - Fee Related CN202993625U (en) | 2012-12-14 | 2012-12-14 | Electric heating auxiliary dry heating resistant control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202993625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106820979A (en) * | 2017-01-17 | 2017-06-13 | 珠海格力电器股份有限公司 | Control method and control system of water taking device |
-
2012
- 2012-12-14 CN CN 201220691313 patent/CN202993625U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106820979A (en) * | 2017-01-17 | 2017-06-13 | 珠海格力电器股份有限公司 | Control method and control system of water taking device |
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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: 20130612 Termination date: 20151214 |
|
| EXPY | Termination of patent right or utility model |