CN203421844U - Solar water heater control device capable of being switched to other water heaters - Google Patents
Solar water heater control device capable of being switched to other water heaters Download PDFInfo
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- CN203421844U CN203421844U CN201320376181.9U CN201320376181U CN203421844U CN 203421844 U CN203421844 U CN 203421844U CN 201320376181 U CN201320376181 U CN 201320376181U CN 203421844 U CN203421844 U CN 203421844U
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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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Abstract
The utility model discloses a solar water heater control device capable of being switched to other water heaters. The solar water heater control device comprises a hot water pipeline, a water return pipeline, a controller, and a water temperature and water level sensor, wherein the hot water pipeline comprises a hot water temperature sensor, a water flowing signal sensor and a normally-open hot water electromagnetic valve, the water return pipeline comprises a water return electric valve and at least one water return temperature sensor, the water temperature and water level sensor is arranged in a water tank, a water pump is arranged on the hot water pipeline or the water return pipeline, and one end of a cold water feeding pipeline provided with a water feeding electronic valve is communicated with the hot water pipeline. The hot water pipeline, the water return pipeline, the controller, the cold water feeding pipeline and the like are all mounted in a mounting box body, an upper branch hot water pipeline and a lower branch hot water pipeline are arranged on the hot water pipeline located at the two ends of the normally-open hot water electromagnetic valve, the mounting box body is provided with connectors connected with the pipelines, the connectors of the upper branch hot water pipeline and the connector of the lower branch hot water pipeline can be connected with other water heaters, and one branch hot water pipeline is provided with a normally-closed hot water electromagnetic valve.
Description
Technical field
The utility model relates to solar water heater field, refers more particularly to the control device that solar water heater and other water heater switch mutually.
Background technology
At present conventionally be arranged on the solar water heater on roof, be subject to weather effect, overcast and rainy, there is no hot water, need to produce hot water as gas heater, electric heater etc. with other water heater.In use procedure, when using solar water heater, need be by the valve closing of other water heater; When with other water heater, need be by the valve closing of solar water heater.Operate cumbersomely, and easily make mistakes.
Utility model content
The technical problems to be solved in the utility model is: a kind of simple, convenient, reliable solar water heater control device that can mutually switch with other water heater is provided.
For solving the problems of the technologies described above, the utility model has adopted following technical scheme.
The solar water heater control device that can mutually switch with other water heater, comprising: hot water line, water return pipeline, controller, and be installed on the water-temperature water-level sensor in solar water heater water tank, on hot water line or water return pipeline, be provided with water pump
,on water return pipeline, be provided with backwater motor-driven valve and return water temperature sensor, on hot water line, be provided with water flow signal transducer and hot water temperature's sensor, one end of cold water watering pipeline is connected with hot water line, on cold water watering pipeline, be provided with water solenoid valve, hot water temperature's sensor, water-temperature water-level sensor, water flow signal transducer, the signal output part of return water temperature sensor is electrically connected to signal input part corresponding in controller, the water pump control signal of controller output, backwater motor-driven valve is controlled signal, upper water solenoid valve control signal respectively with water pump, backwater motor-driven valve, the control end of upper water solenoid valve is electrically connected to, described hot water line, water return pipeline, water pump, backwater motor-driven valve, water flow signal transducer, cold water watering pipeline and upper water solenoid valve are installed in an installation casing, the interface of installing that the backwater that is provided with the hot water water inlet interface that is communicated with hot water line and hot water effluent's interface on casing, is communicated with water return pipeline is intake interface and backwater water outlet mouthpiece and the upper water that is communicated with cold water watering pipeline is intake, be characterized in: on hot water line, be provided with and often open hot water electromagnetic valve, on the hot water line who often opens hot water electromagnetic valve two ends, be provided with the upper and lower Er Gen hot water line of branch, install on casing and be provided with the upper and lower hot water line of the branch interface being communicated with the upper and lower hot water line of branch, the upper and lower hot water line of branch interface can be connected with delivery port with the water inlet of other water heater respectively, on the hot water line of Yi Gen branch, be provided with normally closed hot water electromagnetic valve therein, controller output often open hot water electromagnetic valve's control signal, normally closed hot water electromagnetic valve's control signal is electrically connected to the control end of often opening hot water electromagnetic valve, normally closed hot water electromagnetic valve respectively.
Further, the aforesaid solar water heater control device that can mutually switch with other water heater wherein, is also provided with register on cold water watering pipeline and hot water line.
Further, the aforesaid solar water heater control device that can mutually switch with other water heater, wherein, the structure of described register is: on cold water watering pipeline, be provided with electric flow control valve, the electric flow control valve control signal of controller output is electrically connected to the control end of electric flow control valve.
Further, the aforesaid solar water heater control device that can mutually switch with other water heater, wherein, the structure of described register is: on cold water watering pipeline, be arranged in parallel temperature adjustment pipeline, on temperature adjustment pipeline, be provided with thermostatic valve, the temperature inductor of thermostatic valve is arranged on hot water line.
The beneficial effects of the utility model: can automatically control the switching of solar water heater and other water heater, simple, convenient, reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of preferred embodiment of solar water heater control device that can mutually switch with other water heater described in the utility model.
Fig. 2 is the control principle block diagram of the controller in Fig. 1.
Fig. 3 is use state diagram embodiment illustrated in fig. 1.
Fig. 4 is the structural representation of the solar water heater control device the second preferred embodiment that can mutually switch with other water heater described in the utility model.
Fig. 5 is the control principle block diagram of the controller in Fig. 4.
Fig. 6 is use state diagram embodiment illustrated in fig. 4.
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the solar water heater control device that can mutually switch with other water heater described in the utility model is further described.
Referring to Fig. 1, Fig. 2, shown in Fig. 3, the solar water heater control device that can mutually switch with other water heater described in the utility model, comprising: hot water line 2, water return pipeline 4, controller 10, and be installed on the water-temperature water-level sensor 14 in solar water heater water tank 17, on hot water line 2 or water return pipeline 4, being provided with water pump 6---in the present embodiment, water pump 6 is arranged on hot water line 2, on water return pipeline 4, be provided with backwater motor-driven valve 8 and return water temperature sensor 5, on hot water line 2, be provided with water flow signal transducer 7 and hot water temperature's sensor 51, one end of cold water watering pipeline 3 is connected with hot water line 2, on cold water watering pipeline 3, be provided with water solenoid valve 9, hot water temperature's sensor 51, water-temperature water-level sensor 14, water flow signal transducer 7, the signal output part of return water temperature sensor 5 is electrically connected to signal input part corresponding in controller 10, the water pump control signal of controller 10 outputs, backwater motor-driven valve is controlled signal, upper water solenoid valve control signal respectively with water pump 6, backwater motor-driven valve 8, the control end of upper water solenoid valve 9 is electrically connected to, described hot water line 2, water return pipeline 4, controller 10, water pump 6, backwater motor-driven valve 8, water flow signal transducer 7, cold water watering pipeline 3 and upper water solenoid valve 9 are installed in an installation casing 1, the interface 31 of installing that the backwater that is provided with the hot water water inlet interface 21 that is communicated with hot water line 2 and hot water effluent's interface 22 on casing 1, is communicated with water return pipeline 4 is intake interface 41 and backwater water outlet mouthpiece 42 and the upper water that is communicated with cold water watering pipeline 3 is intake, on hot water line 2, be provided with and often open hot water electromagnetic valve 13, on the hot water line 2 who often opens hot water electromagnetic valve 13 two ends, be provided with, the hot water line of Xia Ergen branch is the hot water line of top set 25 and inferior division hot water line 27, install on casing 1 and be provided with the hot water line of the top set interface 26 being communicated with the hot water line of top set 25, install on casing 1 and be provided with the inferior division hot water line interface 28 being communicated with inferior division hot water line 27, the hot water line of top set interface 26 can be connected with delivery port with the water inlet of other water heater 32 respectively with inferior division hot water line interface 28, other described water heater 32 can be gas heater or electric heater, on inferior division hot water line 27, be provided with normally closed hot water electromagnetic valve 16, controller 10 output often open hot water electromagnetic valve's control signal, normally closed hot water electromagnetic valve's control signal respectively with often open hot water electromagnetic valve 13, normally closed hot water electromagnetic valve's 16 control end is electrically connected to.In the present embodiment, on cold water watering pipeline 3 and hot water line 2, be also provided with register, the structure of described register is: on cold water watering pipeline 3, be provided with electric flow control valve 81, the signal output part of hot water temperature's sensor 51 is electrically connected to signal input part corresponding in controller 10, and the electric flow control valve control signal of controller 10 outputs is electrically connected to the control end of electric flow control valve 81.
Shown in Figure 3, during practical application, by external water pipe 23, the water tank of solar water heater 17 is connected with hot water water inlet interface 21, by external water pipe 43, water tank 17 is connected with backwater water outlet mouthpiece 42, by external water pipe 24, hot water effluent's interface 22 is connected with backwater water inlet interface 41, tap 12 is arranged on external water pipe 24, upper water water inlet interface 31 is connected with the water supply pipe in family, by external water pipe 29, the water inlet of other water heater 32 is connected with the hot water line of top set interface 26, by external water pipe 30, the delivery port of other water heater 32 is connected with inferior division hot water line interface 28.In actual applications; also can or install return water temperature sensor 5 additional on external water pipe 24 on the close external water pipe 43 of water tank 17; or directly the return water temperature sensor 5 on water return pipeline 4 is retrofitted on external water pipe 24, the variation of these mounting means all should belong to protection domain of the present utility model.
The operation principle of the solar water heater control device that can mutually switch with other water heater described in the utility model is as follows: shown in Figure 3, during use, first can be by the water level in the preset setting solar water heater water tank 17 of controller 10 and water temperature (being conventionally set as 55 degree), by the preset setting return water temperature of controller 10 (being conventionally set as 35 degree), by the preset setting of controller 10 hot water effluent temperature (being conventionally set as 46 degree), controller 10 shows water level and water temperature after receiving the signal that water-temperature water-level sensor 14 brings.
Water level in water tank 17 lower than set water level time, controller 10 output control signals are opened water solenoid valve 9 and electric flow control valve 81, upper water just by cold water watering pipeline 3 through hot water line 2 to the interior water inlet of water tank 17; When water-temperature water-level sensor 14 detects water level in water tank 17 in a high position, after controller 10 receives the signal that water-temperature water-level sensor 14 brings, output control signal is closed and is closed water solenoid valve 9 and electric flow control valve 81, just stops to the interior water inlet of water tank 17.
When sunny, water temperature in water tank 17 is generally not less than the temperature of setting, during use, fetch boiling water leading 12, after there are flowing out, tap 12 at once tap 12 is closed, now, water flow signal transducer 7 detects to be had water flow and sends signal in hot water line 2, after controller 10 receives the signal that water flow signal transducer 7 brings, output control signal starts water pump 6 work, export control signal simultaneously and open backwater motor-driven valve 8, make hot water line 2 and water return pipeline 4 form circulation waterway, allow the cold water in hot water line 2 be circulated back to as early as possible in water tank 17, in this process, the temperature of measuring when return water temperature sensor 5 is higher than the return water temperature of setting, controller 10 switches off the pump 6 and backwater motor-driven valve 8, water stops circulation.Now, then the tap 12 of fetching boiling water, just can normally use hot water.
When sunlight is inadequate, water temperature in water tank 17 can be lower than the temperature of setting, during use, fetch boiling water leading 12, after there are flowing out, tap 12 at once tap 12 is closed, now, water flow signal transducer 7 detects to be had water flow and sends signal in hot water line 2, after controller 10 receives the signal that water flow signal transducer 7 brings, output control signal starts water pump 6 work, export control signal simultaneously and open backwater motor-driven valve 8, close and often open hot water electromagnetic valve 13, open normally closed hot water electromagnetic valve 16, then start other water heater 32, allow the cold water in hot water line 2 first be circulated back in water tank 17, when the temperature of measuring when return water temperature sensor 5 is consistent with the water temperature in water tank 17, controller 10 switches off the pump 6 and backwater motor-driven valve 8, water stops circulation.Now, fetch boiling water again leading 12, water flow signal transducer 7 detects to be had water flow and sends signal in hot water line 2, after controller 10 receives the signal that water flow signal transducer 7 brings, output control signal starts water pump 6 work (or also can not start water pump 6 when pressure enough does not need to pressurize), close and often open hot water electromagnetic valve 13, open normally closed hot water electromagnetic valve 16, cold water becomes hot water after other water heater 32 heating, just can normally use hot water.
The temperature of measuring when hot water temperature's sensor 51 higher than set hot water effluent's temperature time, controller 10 output control signals are opened electric flow control valve 81, and open water solenoid valve 9 simultaneously, the cold water added and the hot water in hot water line 2 are suitably mixed, the temperature of constantly measuring according to hot water temperature's sensor 51 in this process regulates the open degree of electric flow control valve 81, reaches to control discharge on cold water, finally realize the object that the temperature that hot water temperature's sensor 51 is measured reaches hot water effluent's temperature of setting.
Referring to Fig. 4, Fig. 5, shown in Fig. 6, the solar water heater control device that can mutually switch with other water heater described in the utility model, comprising: hot water line 2, water return pipeline 4, controller 10, and be installed on the water-temperature water-level sensor 14 in solar water heater water tank 17, on hot water line 2 or water return pipeline 4, being provided with water pump 6---in the present embodiment, water pump 6 is arranged on hot water line 2, on water return pipeline 4, be provided with backwater motor-driven valve 8 and return water temperature sensor 5, on hot water line 2, be provided with water flow signal transducer 7 and hot water temperature's sensor 51, one end of cold water watering pipeline 3 is connected with hot water line 2, on cold water watering pipeline 3, be provided with water solenoid valve 9, hot water temperature's sensor 51, water-temperature water-level sensor 14, water flow signal transducer 7, the signal output part of return water temperature sensor 5 is electrically connected to signal input part corresponding in controller 10, the water pump control signal of controller 10 outputs, backwater motor-driven valve is controlled signal, upper water solenoid valve control signal respectively with water pump 6, backwater motor-driven valve 8, the control end of upper water solenoid valve 9 is electrically connected to, described hot water line 2, water return pipeline 4, controller 10, water pump 6, backwater motor-driven valve 8, water flow signal transducer 7, cold water watering pipeline 3 and upper water solenoid valve 9 are installed in an installation casing 1, the interface 31 of installing that the backwater that is provided with the hot water water inlet interface 21 that is communicated with hot water line 2 and hot water effluent's interface 22 on casing 1, is communicated with water return pipeline 4 is intake interface 41 and backwater water outlet mouthpiece 42 and the upper water that is communicated with cold water watering pipeline 3 is intake, on hot water line 2, be provided with and often open hot water electromagnetic valve 13, on the hot water line 2 who often opens hot water electromagnetic valve 13 two ends, be provided with, the hot water line of Xia Ergen branch is the hot water line of top set 25 and inferior division hot water line 27, install on casing 1 and be provided with the hot water line of the top set interface 26 being communicated with the hot water line of top set 25, install on casing 1 and be provided with the inferior division hot water line interface 28 being communicated with inferior division hot water line 27, the hot water line of top set interface 26 can be connected with delivery port with the water inlet of other water heater 32 respectively with inferior division hot water line interface 28, other described water heater 32 can be gas heater or electric heater, on inferior division hot water line 27, be provided with normally closed hot water electromagnetic valve 16, controller 10 output often open hot water electromagnetic valve's control signal, normally closed hot water electromagnetic valve's control signal respectively with often open hot water electromagnetic valve 13, normally closed hot water electromagnetic valve's 16 control end is electrically connected to.In the present embodiment, on cold water watering pipeline 3 and hot water line 2, be also provided with register, the structure of described register is: on cold water watering pipeline 3, be arranged in parallel temperature adjustment pipeline 33, on temperature adjustment pipeline 33, be provided with thermostatic valve 15, the temperature inductor 151 of thermostatic valve 15 is arranged on hot water line 2.
Shown in Figure 6, during practical application, by external water pipe 23, the water tank of solar water heater 17 is connected with hot water water inlet interface 21, by external water pipe 43, water tank 17 is connected with backwater water outlet mouthpiece 42, by external water pipe 24, hot water effluent's interface 22 is connected with backwater water inlet interface 41, tap 12 is arranged on external water pipe 24, upper water water inlet interface 31 is connected with the water supply pipe in family, by external water pipe 29, the water inlet of other water heater 32 is connected with the hot water line of top set interface 26, by external water pipe 30, the delivery port of other water heater 32 is connected with inferior division hot water line interface 28.In actual use; also can or install return water temperature sensor 5 additional on external water pipe 24 on the close external water pipe 43 of water tank 17; or directly the return water temperature sensor 5 on water return pipeline 4 is retrofitted on external water pipe 24, the variation of these mounting means all should belong to protection domain of the present utility model.
The operation principle of the solar water heater control device that can mutually switch with other water heater described in the utility model is as follows: shown in Figure 6, during use, first can be by the water level in the preset setting solar water heater water tank 17 of controller 10 and water temperature (being conventionally set as 55 degree), by the preset setting return water temperature of controller 10 (being conventionally set as 35 degree), by the preset setting of thermostatic valve 15 hot water effluent temperature (being conventionally set as 46 degree), controller 10 shows water level and water temperature after receiving the signal that water-temperature water-level sensor 14 brings.
Water level in water tank 17 lower than set water level time, controller 10 output control signals are opened water solenoid valve 9, upper water just by cold water watering pipeline 3 through hot water line 2 to the interior water inlet of water tank 17; When water-temperature water-level sensor 14 detects water level in water tank 17 in a high position, after controller 10 receives the signal that water-temperature water-level sensor 14 brings, output control signal is closed and is closed water solenoid valve 9, just stops to the interior water inlet of water tank 17.
When sunny, water temperature in water tank 17 is generally not less than the temperature of setting, during use, fetch boiling water leading 12, after there are flowing out, tap 12 at once tap 12 is closed, now, water flow signal transducer 7 detects to be had water flow and sends signal in hot water line 2, after controller 10 receives the signal that water flow signal transducer 7 brings, output control signal starts water pump 6 work, export control signal simultaneously and open backwater motor-driven valve 8, make hot water line 2 and water return pipeline 4 form circulation waterway, allow the cold water in hot water line 2 be circulated back to as early as possible in water tank 17, in this process, the temperature of measuring when return water temperature sensor 5 is higher than the return water temperature of setting, controller 10 switches off the pump 6 and backwater motor-driven valve 8, water stops circulation.Now, then the tap 12 of fetching boiling water, just can normally use hot water.
When sunlight is inadequate, water temperature in water tank 17 can be lower than the temperature of setting, during use, fetch boiling water leading 12, after there are flowing out, tap 12 at once tap 12 is closed, now, water flow signal transducer 7 detects to be had water flow and sends signal in hot water line 2, after controller 10 receives the signal that water flow signal transducer 7 brings, output control signal starts water pump 6 work, export control signal simultaneously and open backwater motor-driven valve 8, close and often open hot water electromagnetic valve 13, open normally closed hot water electromagnetic valve 16, then start other water heater 32, allow the cold water in hot water line 2 first be circulated back in water tank 17, when the temperature of measuring when return water temperature sensor 5 is consistent with the water temperature in water tank 17, controller 10 switches off the pump 6 and backwater motor-driven valve 8, water stops circulation.Now, fetch boiling water again leading 12, water flow signal transducer 7 detects to be had water flow and sends signal in hot water line 2, after controller 10 receives the signal that water flow signal transducer 7 brings, output control signal starts water pump 6 work (or also can not start water pump 6 when pressure enough does not need to pressurize), close and often open hot water electromagnetic valve 13, open normally closed hot water electromagnetic valve 16, cold water becomes hot water after other water heater 32 heating, just can normally use hot water.
Hot water temperature in temperature inductor 151 induction heat water lines 2 surpasses hot water effluent's temperature of setting, thermostatic valve 15 can regulate the water yield of the cold water adding automatically, the cold water added by temperature adjustment pipeline 33 and the hot water in hot water line 2 are suitably mixed, make hot water effluent's temperature in temperature inductor 151 induction heat water lines 2 reach the hot water temperature of setting.Hot water effluent's temperature in temperature inductor 151 induction heat water lines 2 is not higher than the hot water temperature who sets, and thermostatic valve 15 is automatically in closed condition.
The solar water heater control device that can mutually switch with other water heater described in the utility model can be controlled the switching of solar water heater and other water heater automatically, simple, convenient, reliable.
Claims (4)
1. the solar water heater control device that can mutually switch with other water heater, comprising: hot water line, water return pipeline, controller, and be installed on the water-temperature water-level sensor in solar water heater water tank, on hot water line or water return pipeline, be provided with water pump
,on water return pipeline, be provided with backwater motor-driven valve and return water temperature sensor, on hot water line, be provided with water flow signal transducer and hot water temperature's sensor, one end of cold water watering pipeline is connected with hot water line, on cold water watering pipeline, be provided with water solenoid valve, hot water temperature's sensor, water-temperature water-level sensor, water flow signal transducer, the signal output part of return water temperature sensor is electrically connected to signal input part corresponding in controller, the water pump control signal of controller output, backwater motor-driven valve is controlled signal, upper water solenoid valve control signal respectively with water pump, backwater motor-driven valve, the control end of upper water solenoid valve is electrically connected to, described hot water line, water return pipeline, water pump, backwater motor-driven valve, water flow signal transducer, cold water watering pipeline and upper water solenoid valve are installed in an installation casing, the interface of installing that the backwater that is provided with the hot water water inlet interface that is communicated with hot water line and hot water effluent's interface on casing, is communicated with water return pipeline is intake interface and backwater water outlet mouthpiece and the upper water that is communicated with cold water watering pipeline is intake, it is characterized in that: on hot water line, be provided with and often open hot water electromagnetic valve, on the hot water line who often opens hot water electromagnetic valve two ends, be provided with the upper and lower Er Gen hot water line of branch, install on casing and be provided with the upper and lower hot water line of the branch interface being communicated with the upper and lower hot water line of branch, the upper and lower hot water line of branch interface can be connected with delivery port with the water inlet of other water heater respectively, on the hot water line of Yi Gen branch, be provided with normally closed hot water electromagnetic valve therein, controller output often open hot water electromagnetic valve's control signal, normally closed hot water electromagnetic valve's control signal is electrically connected to the control end of often opening hot water electromagnetic valve, normally closed hot water electromagnetic valve respectively.
2. the solar water heater control device that can mutually switch with other water heater according to claim 1, is characterized in that: on cold water watering pipeline and hot water line, be also provided with register.
3. the solar water heater control device that can mutually switch with other water heater according to claim 2, it is characterized in that: the structure of described register is: on cold water watering pipeline, be provided with electric flow control valve, the electric flow control valve control signal of controller output is electrically connected to the control end of electric flow control valve.
4. the solar water heater control device that can mutually switch with other water heater according to claim 2, it is characterized in that: the structure of described register is: on cold water watering pipeline, be arranged in parallel temperature adjustment pipeline, on temperature adjustment pipeline, be provided with thermostatic valve, the temperature inductor of thermostatic valve is arranged on hot water line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320376181.9U CN203421844U (en) | 2013-06-28 | 2013-06-28 | Solar water heater control device capable of being switched to other water heaters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320376181.9U CN203421844U (en) | 2013-06-28 | 2013-06-28 | Solar water heater control device capable of being switched to other water heaters |
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| Publication Number | Publication Date |
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| CN203421844U true CN203421844U (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320376181.9U Expired - Fee Related CN203421844U (en) | 2013-06-28 | 2013-06-28 | Solar water heater control device capable of being switched to other water heaters |
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| CN (1) | CN203421844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335423A (en) * | 2013-06-28 | 2013-10-02 | 苏州开来新能源有限公司 | Solar water heater control device interchangeable with other water heaters |
-
2013
- 2013-06-28 CN CN201320376181.9U patent/CN203421844U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335423A (en) * | 2013-06-28 | 2013-10-02 | 苏州开来新能源有限公司 | Solar water heater control device interchangeable with other water heaters |
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Granted publication date: 20140205 Termination date: 20160628 |