CN103411314B - Hot water machine backwater control assembly, hot water machine and backwater control method thereof - Google Patents
Hot water machine backwater control assembly, hot water machine and backwater control method thereof Download PDFInfo
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- CN103411314B CN103411314B CN201310337577.7A CN201310337577A CN103411314B CN 103411314 B CN103411314 B CN 103411314B CN 201310337577 A CN201310337577 A CN 201310337577A CN 103411314 B CN103411314 B CN 103411314B
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Abstract
The present invention discloses a kind of hot water machine backwater control assembly, hot water machine and backwater control control method thereof, this hot water machine backwater control assembly comprises: comprise controller and Water flow detector, temperature-detecting device and water circulating pump, controller comprises: the first judge module, the second judge module and Executive Module; Wherein, the first judge module, for the water terminal that judges hot water machine whether in use state; Whether the second judge module, be less than preset temperature for the temperature that judges water return pipeline current; Executive Module, is back to the water of water return pipeline in water tank for ON cycle water pump. The hot water machine backwater control assembly that the present invention proposes is just understood ON cycle water pump, the energy waste of having avoided prior art to need timing backwater or constant temperature backwater to cause in the time that user uses water terminal.<!--1-->
Description
Technical field
The present invention relates to a kind of hot water machine backwater control assembly, hot water machine and backwater control method thereof.
Background technology
In the installing engineering of heat storage type hot water machine, the installation site of hot water machine is apart from water terminal locationFar away, when the water in pipeline is long-time place after, water temperature can drop to and not meet instructions for use. Conventionally in use, the cold water of depositing in pipeline need to be bled off and just have comfortable hot water to use, at this moment not only cause the waste of water, reduced the comfortableness of water simultaneously. Existing solutionMethod is to increase water recovery apparatus, designs by pipe network backwater, can realize hot water machine and supply at any timeHot water, thereby saving water resource improve water comfortableness simultaneously. Current pipe network return water modeSeveral below main employing.
The first is manual return water mode. Now, need to increase gauge tap, at the different water spots of usingNeed to increase multiple gauge taps. For renovated building, be inconvenient to install control and openClose.
The second is timing return water mode. Set in advance after timing, water recovery apparatus is according to fixingTime service. But this return water mode is not because the variation of water terminal service time changes, in the current that flow out in water terminal, may there is cold water.
The third is constant temperature return water mode. This return water mode can ensure to provide at any time hot water, stillPower consumption is large, in addition, because the constant temperature water pump of pipe network is ceaselessly moving, makes pipe network heat radiation fasterLarger, as do not needed for a long time to cause during water the waste of mass energy.
Summary of the invention
Main purpose of the present invention is to provide a kind of hot water machine backwater control assembly, hot water machine and backwater thereofControl method, is intended in the time that water terminal is used, just can open hot water machine backwater control assembly withSave the energy.
In order to achieve the above object, the present invention proposes a kind of hot water machine backwater control assembly, and hot water machine returnsWater flow detector, temperature that water management assembly comprises controller and is electrically connected with this controllerCheckout gear and water circulating pump, described water circulating pump is installed on the water return pipeline of described hot water machine, in order to the water in described water return pipeline is drawn back in the water tank of described hot water machine;
Described Water flow detector is installed on described water return pipeline, in order to detect in described water return pipelineThe flow signals of current; Described temperature-detecting device is installed on described water return pipeline, for inspectionSurvey the temperature of current in described water return pipeline;
Described controller comprises: the first judge module, the second judge module and Executive Module; Wherein，
Described the first judge module is electrically connected with described Water flow detector, for receiving described current inspectionThe water terminal of surveying the flow signal that detects of device and judge described hot water machine whether inUse state;
Described the second judge module is electrically connected with described temperature-detecting device, for receiving described temperature inspectionWhether the temperature signal that survey device detects the temperature that judges current in described water return pipeline are less thanPreset temperature;
Described Executive Module, is electrically connected with described the second judge module, for the use at described hot water machineThe temperature of water terminal current in the time using state and in described water return pipeline is less than preset temperatureIn situation, open described water circulating pump, the water in described water return pipeline is back in described water tank。
Preferably, described controller also comprises reminding module, and this reminding module and described second judges mouldPiece electrical connection, is more than or equal to described default temperature in order to the temperature of current in described water return pipelineWhile spending, point out user whether to close described water circulating pump.
Preferably, described Water flow detector is pressure switch or water flow switch.
Preferably, described temperature-detecting device is temperature sensor.
Preferably, described Water flow detector is installed on and on described water return pipeline, closes on described hot water machineWater outlet, described temperature-detecting device is installed on and on described water return pipeline, closes on described hot water machineWater inlet, described water circulating pump is positioned at water inlet and the described temperature detection of described hot water machineBetween device.
The present invention further also proposes a kind of hot water machine, and this hot water machine comprises hot water machine backwater control assembly, described hot water machine backwater control assembly comprise hot water machine backwater control assembly comprise controller andThe Water flow detector, temperature-detecting device and the water circulating pump that are electrically connected with this controller, described inWater circulating pump is installed on the water return pipeline of described hot water machine, in order to by described water return pipelineWater is drawn back in the water tank of described hot water machine;
Described Water flow detector is installed on described water return pipeline, in order to detect in described water return pipelineThe flow signals of current; Described temperature-detecting device is installed on described water return pipeline, for inspectionSurvey the temperature of current in described water return pipeline;
Described controller comprises: the first judge module, the second judge module and Executive Module; Wherein，
Described the first judge module is electrically connected with described Water flow detector, for receiving described current inspectionThe water terminal of surveying the flow signal that detects of device and judge described hot water machine whether inUse state;
Described the second judge module is electrically connected with described temperature-detecting device, for receiving described temperature inspectionWhether the temperature signal that survey device detects the temperature that judges current in described water return pipeline are less thanPreset temperature;
Described Executive Module, is electrically connected with described the second judge module, for the use at described hot water machineThe temperature of water terminal current in the time using state and in described water return pipeline is less than preset temperatureIn situation, open described water circulating pump, the water in described water return pipeline is back in described water tank。
The present invention further also proposes a kind of hot water machine backwater control method, comprises the following steps:
The flow signals of current in the water return pipeline of detection hot water machine;
Whether the water terminal that judges described hot water machine according to the flow signals detecting is in use state；
When the water terminal of described hot water machine is in the time being used state, detect current in described water return pipelineTemperature;
Whether the temperature that judges current in described water return pipeline is less than preset temperature;
In the time that the temperature of current in described pipeline is less than described preset temperature, opens and be installed on described backwaterWater circulating pump on pipeline, is back to the water in described water return pipeline in the water tank of described hot water machineIn.
Preferably, describedly judge whether the temperature of current in described water return pipeline is less than the step of preset temperatureAfter rapid, also comprise:
In the time that the temperature of current in described water return pipeline is more than or equal to described preset temperature, prompting userWhether close described water circulating pump.
Preferably, detect described flow signals by pressure switch or water flow switch.
Preferably, detect described temperature signal by temperature sensor.
The hot water machine backwater control assembly that the present invention proposes, detects hot water machine by Water flow detectorThe flow signals of flow in pipeline, and mobile according to what detect by the first judge moduleSignal judges that whether the water terminal of described hot water machine is in use state, when the water of hot water machineTerminal is in being used ON cycle water pump when state, avoided needing in prior art timing backwater orConstant temperature backwater and the energy that causesWaste, meanwhile, also need not arrange multiple gauge taps according to multiple water terminals.
Brief description of the drawings
Fig. 1 is applied to the schematic diagram on hot water machine in hot water machine backwater control assembly of the present invention use procedure；
Fig. 2 is the system schematic of hot water machine backwater control assembly of the present invention the first embodiment;
Fig. 3 is the system schematic of hot water machine backwater control assembly of the present invention the second embodiment;
Fig. 4 is the schematic flow sheet of the first embodiment of hot water machine backwater control method of the present invention;
Fig. 5 is the schematic flow sheet of the second embodiment of hot water machine backwater control method of the present invention.
Realization, functional characteristics and the advantage of the object of the invention, in connection with embodiment, are done into one with reference to accompanying drawingStep explanation.
Detailed description of the invention
Be described further with regard to technical scheme of the present invention below in conjunction with drawings and the specific embodiments. ShouldWork as understanding, specific embodiment described herein is only in order to explain the present invention, and is not used in limitDetermine the present invention.
The present invention proposes a kind of hot water machine backwater control assembly.
Refer to Fig. 1 and Fig. 2, Fig. 1 is that hot water machine backwater control assembly preferred embodiment of the present invention usedIn journey, be applied to the schematic diagram on hot water machine; Fig. 2 is hot water machine backwater control assembly first of the present inventionThe structural representation of embodiment. Wherein, the water tank 10 of hot water machine has water inlet 101 and delivery port102, in the present embodiment, in this hot water machine backwater control assembly use procedure, be installed in and be communicated with this waterOn the water inlet 101 of case 10 and the water return pipeline 12 of delivery port 102, in order to by water return pipeline 12Water in water inlet 101 flows into water tank 10, heat. Water tank 10 reality of hot water machine were usedCheng Zhong, according to actual needs, water return pipeline 12 is whole by least one branch and each waterEnd 60 connects. In the present embodiment, hot water machine backwater control assembly comprises: controller 30 and withWater circulating pump 20, Water flow detector 40 and temperature-detecting device 50 that controller 30 is electrically connected,Wherein, water circulating pump 20 is by water inlet 101 and the water outlet of described water return pipeline 12 joining water box 10Mouth 102. Water circulating pump 20 is in order to draw back the water in water return pipeline 12 in the water tank 10 of hot water machine.Water flow detector 40 is installed on delivery port 102 positions of closing on water tank 10 on water return pipeline 12,Whether there is water from water tank 10, to flow out the flow signals that detects current in order to detect. Described temperatureCheckout gear 50 is installed on the water inlet 101 that closes on hot water machine on described water return pipeline 12, in order to inspectionWater flow temperature in survey time water lines 12. Water tank 10 in the time the flow signals of current being detectedDelivery port 101 has currentGo out or water terminal 60 in using when state, temperature-detecting device 50 just can start to detect backwaterWater flow temperature in pipeline 12. In preferred embodiments of the present invention, described water circulating pump 20 is pacifiedBe loaded on water return pipeline 12 and between the water inlet 101 and temperature-detecting device 50 of water tank 10.Controller 30 is electrically connected with water circulating pump 20, Water flow detector 40 and temperature-detecting device 50,It comprises the first judge module 31, the second judge module 32 and Executive Module 33. This first is sentencedDisconnected module 31 is electrically connected with Water flow detector 40, examines for receiving described Water flow detector 40The water-flow signal measuring also judges whether the delivery port 101 of water tank 10 there are flowing out or water terminal 6Whether 0 in use state. This second judge module 32 is electrically connected with temperature-detecting device 50, usesThe temperature signal detecting in the described temperature-detecting device 50 of reception also judges described water return pipeline 12Whether the temperature of middle current is less than preset temperature. Described Executive Module 33 judges mould with described secondPiece 31 is electrically connected, in the time that the temperature of water return pipeline 12 current is less than preset temperature and described inIn water return pipeline 12, the temperature of current is less than in the situation of preset temperature, opens described water circulating pump20, the water in described water return pipeline 12 is flowed in described water tank 10.
In the present embodiment, Executive Module 33 is also more than or equal to for the temperature when water return pipeline currentWhen preset temperature, close water circulating pump 20. Executive Module 33 is also for working as the first judge module 31The water terminal 60 that judges hot water machine, in the time using state, is not closed water circulating pump 20.
Particularly, first detect the flow signals of flow in the water return pipeline 12 of hot water machine, pass throughFlow signals with the water terminal 60 that judges hot water machine whether in use state, when hot water machineWater terminal 60 is in the time being used state, and ON cycle water pump 20, is with by water circulating pump 20Water flow in moving water return pipeline 12, makes the cold water in the water return pipeline of hot water machine enter into water tankIn 10, to heat, meanwhile, hot water flow into water terminal 60 from the delivery port of water tank 10,Thereby while avoiding user to open water terminal 60, cold water flows out from water terminal 60. Particularly,Water terminal 60 can have various ways, and as first-class in tap, shower, the present invention does not do thisLimit. Particularly, Water flow detector 40 is pressure switch or water flow switch.
The operation principle of this hot water machine backwater control assembly is as follows: in the time that user opens a certain tap,The first judge module 31 is judged tap in use state, then, and when the second judge module32 temperature signals that detect by temperature-detecting device 50 are judged the temperature of current in water return pipelineWhile being less than preset temperature, Executive Module 33 is opened water circulating pump 20. After past a period of time, theThe temperature signal that two judge modules 32 detect by temperature-detecting device 50 is judged in water return pipelineWhen the temperature of current is more than or equal to preset temperature, now, Executive Module 33 controlled circulation water pumps20 close. If in the time that the temperature of current does not also reach preset temperature, the backwater time not enough, and user's Temporarily Closed tap, now, theOne judge module 31 is judged tap not in use state, illustrates that now user does not need to makeWith hot water, now, thereby Executive Module 33 controlled circulation water pumps 20 cut out the energy of avoiding unnecessarySource waste.
Particularly, in the present embodiment, temperature-detecting device 50 is temperature sensor, certainly in other changeIn shape embodiment, temperature-detecting device 50 can be also other temperature measuring equipment, and the present invention is not to thisBe construed as limiting. Temperature-detecting device 50 is arranged on water return outlet and a delivery port use farthest of water tank 10Between the water return pipeline of water terminal 60.
The hot water machine backwater control assembly that the present invention proposes, detects hot water machine by Water flow detector 40Water return pipeline in the flow signals of flow, and by the first judge module 31 according to detectionThe flow signals arriving judges that the water terminal 60 of hot water machine, whether in use state, works as hot water machineWater terminal 60 in using ON cycle water pump 20 when state, avoided needing in prior artTiming backwater or constant temperature backwater and the energy waste that causes, meanwhile, also need not be according to multiple watersTerminal 60 arranges multiple gauge taps. Meanwhile, in the time that water terminal 60 is stopped using, recirculated waterPump 20 cuts out, and opens and makes thereby avoid closing again water circulating pump 20 after opening because of water terminal 60The energy waste becoming. In addition, detect the temperature of current in water return pipeline by temperature-detecting device 50Whether degree signal, be less than preset temperature with the temperature that judges current in water return pipeline, works as return pipeWhen in road, the temperature of current is less than preset temperature, Executive Module 33 is meeting ON cycle water pump 20,Thereby avoided in the time that user opens water terminal 60, but now in water return pipeline 12 water temperature enoughUser uses, then opens water circulating pump 20 and can waste energy. Therefore, this hot water machine backwaterControl Component more can be saved the energy, thus the cost while saving hot water machine backwater. Work as water return pipelineWhen middle water temperature is greater than preset temperature, illustrate that the backwater time is enough, the water in water return pipeline has been heatWater, now, closes water circulating pump 20, thereby can effectively save the energy.
In conjunction with reference to Fig. 3, Fig. 3 is that the structure of hot water machine backwater control assembly of the present invention the second embodiment is shownIntention.
The present invention proposes the second embodiment of hot water machine backwater control assembly, the present embodiment and above-mentioned firstEmbodiment is different, and in the present embodiment, controller also comprises:
Reminding module 34, this reminding module 34 is electrically connected with the second judge module 32, in order at described timeWhen the temperature of current is more than or equal to described preset temperature in water lines, point out user whether to close instituteState water circulating pump.
The various ways promptings such as the mode that particularly, reminding module 34 can show by sounding or display screenUser, the present invention is not construed as limiting this.
The hot water machine backwater control assembly that the present invention proposes, by arranging reminding module 34 with prompting userWhether close water circulating pump, thereby make the hommization more of this hot water machine backwater control assembly.
The present invention further proposes a kind of hot water machine.
In the present embodiment, hot water machine comprises hot water machine backwater control assembly. This hot water machine backwater control groupConcrete structure, the operation principle of part and the beneficial effect bringing be all with reference to above-described embodiment,Do not repeat them here. In addition, it should be noted that, in the present embodiment, hot water machine can be combustionGas hot water machine, electric water heating machine, heat pump water-heating machine etc., the present invention is not construed as limiting this, and only using willAll parts in hot water machine backwater control assembly are installed on corresponding on the water return pipeline of hot water machinePosition.
The present invention further also proposes a kind of hot water machine backwater control method.
With reference to Fig. 4, Fig. 4 is the flow process signal of the first embodiment of hot water machine backwater control method of the present inventionFigure.
The present invention proposes in the first embodiment of hot water machine backwater control method, hot water machine backwater control sideMethod comprises:
Step S10, the flow signals of current in the water return pipeline of detection hot water machine;
Step S20, judges according to the flow signals detecting whether the water terminal of described hot water machine makesWith state; If the water terminal of described hot water machine, in use state, performs step S30; IfThe water terminal of described hot water machine, not in use state, performs step S40.
Step S30, detects the temperature of current in described water return pipeline;
Step S40, closes the water circulating pump being installed on described water return pipeline;
Step S50, judges whether the temperature of current in described water return pipeline is less than preset temperature; If backwaterWhen the temperature of current is less than preset temperature in pipeline, perform step S60; If water in water return pipelineWhen the temperature of stream is more than or equal to preset temperature, perform step S40.
Step S60, opens the water circulating pump being installed on described water return pipeline, by described water return pipelineWater be back in described water tank.
Only, in the time detecting that in water return pipeline, the temperature of current is less than preset temperature, just understand ON cycleWater pump. Particularly, preset temperature can be set in advance, according to user, the demand of water temperature is come flexiblyPreset temperature is set on ground.
Such as user opens a certain tap, judge tap in use state, then, judgementThe temperature that goes out current is less than preset temperature, now, opens water circulating pump. Go over when a period of time, judgeWhen the temperature of current is more than or equal to preset temperature, now, close water circulating pump. If work as waterThe temperature of stream is not while also reaching preset temperature, the backwater time not enough, and user's Temporarily ClosedTap, now, when judging tap not in the time using state, illustrates that now user is notNeed to use hot water, now, avoid unnecessary energy waste thereby close water circulating pump.
Particularly, in the present embodiment, can detect water in water return pipeline by pressure switch or water flow switchFlow mobile flow signals, temperature-detecting device is temperature sensor.
Particularly, first detect the flow signals of flow in water return pipeline, then according to detectingFlow signals with the water terminal that judges hot water machine whether in use state, when the use of hot water machineWater terminal is in the time being used state, and ON cycle water pump, drives water return pipeline by water circulating pumpIn water flow, make cold-water reflux in water return pipeline in hot water machine to heat, simultaneously, hot water flow into water terminal from the delivery port of hot water machine, thereby avoids user to open water eventuallyWhen end, cold water flows out from water terminal. Particularly, water terminal can have various ways, asTap, shower are first-class, and the present invention is not construed as limiting this. Only detecting in water return pipelineWhen the temperature of current is less than preset temperature, just can ON cycle water pump. Particularly, preset temperatureUser sets in advance, according to user, the demand of water temperature is set to preset temperature neatly.
The hot water machine backwater control method that the present invention proposes, by detecting flow in water return pipelineFlow signals; Whether the water terminal that judges described hot water machine according to the flow signals detecting is locatedIn use state, when water terminal ON cycle water pump in the time using state of hot water machine, thisSample, in the time that user uses water terminal, just meeting ON cycle water pump, has avoided in prior artThe energy waste that needs timing backwater or constant temperature backwater and cause, meanwhile, also need not be according to multiple useWater terminal arranges multiple gauge taps. The implementation method letter of this hot water machine backwater control method simultaneouslySingle, easily realize. Meanwhile, the hot water machine backwater control method that the present invention proposes, by detectingIn water return pipeline, whether the temperature signal of current is less than with the temperature that judges current in water return pipeline in advanceIf temperature, when in water return pipeline, the temperature of current is less than preset temperature, just can ON cycle waterPump, thus avoided in the time that user opens water terminal, but now in water return pipeline water temperature enoughUser uses, then opens water circulating pump and can waste energy. This hot water machine backwater control methodMore can save the energy, thus the cost while saving hot water machine backwater. In addition, when in water return pipelineWhen water temperature is greater than preset temperature, illustrating that the backwater time is enough, has been hot water in water return pipeline, thisTime, close water circulating pump, thereby can effectively save the energy.
The present invention proposes the second embodiment of hot water machine backwater control method.
With reference to Fig. 5, Fig. 5 is the flow process signal of the second embodiment of hot water machine backwater control method of the present inventionFigure.
The present embodiment is different from above-mentioned hot water machine backwater control method the first embodiment, the present embodimentIn, after execution step S50, if when in water return pipeline, the temperature of current is less than preset temperature,Execution step S60; If when in water return pipeline, the temperature of current is more than or equal to preset temperature, holdRow step S70.
Step S70, whether prompting user closes described water circulating pump.
Particularly, the various ways prompting users such as the mode that can show by sounding or display screen, thisBright this is not construed as limiting.
Whether the hot water machine backwater control method that the present invention proposes, close described circulation by prompting userWater pump, thus make the hommization more of this hot water machine backwater control method.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every equivalent structure transformation that utilizes description of the present invention and accompanying drawing content to do, or directly orIndirectly be used in other relevant technical fields, be all in like manner included in patent protection model of the present inventionIn enclosing.
Claims (9)
1. a hot water machine backwater control assembly, is characterized in that, comprise controller and with this controllerWater flow detector, temperature-detecting device and the water circulating pump of electrical connection, described water circulating pump is installed on instituteState on the water return pipeline of hot water machine, in order to the water in described water return pipeline is drawn back to the water tank of described hot water machineIn;
Described Water flow detector is installed on described water return pipeline, in order to detect water in described water return pipelineThe flow signals of stream; Described temperature-detecting device is installed on described water return pipeline, for detection of described timeThe temperature of current in water lines;
The water outlet of the contiguous described hot water machine of described Water flow detector, described temperature-detecting device is contiguousThe water inlet of described hot water machine, described water circulating pump is positioned at water inlet and the described temperature of described hot water machineBetween checkout gear;
Described temperature-detecting device be arranged in described water inlet and multiple water terminal, distance described in go outOn water return pipeline between the water terminal farthest of the mouth of a river;
Described controller comprises: the first judge module, the second judge module and Executive Module; Wherein,
Described the first judge module is electrically connected with described Water flow detector, detects for receiving described currentWhether the flow signal that device detects the water terminal that judges described hot water machine be in using shapeState;
Described the second judge module is electrically connected with described temperature-detecting device, for receiving described temperature detectionThe temperature signal that device detects also judges whether the temperature of current in described water return pipeline is less than default temperatureDegree;
Described Executive Module, is electrically connected with described the second judge module, for the water at described hot water machineTerminal is opened in using the temperature of current when state and in described water return pipeline to be less than in the situation of preset temperatureOpen described water circulating pump, the water in described water return pipeline is back in described water tank.
2. hot water machine backwater control assembly as claimed in claim 1, is characterized in that described controllerAlso comprise reminding module, this reminding module is electrically connected with described the second judge module, in order at described backwaterWhen the temperature of current is more than or equal to described preset temperature in pipeline, point out user whether to close described recirculated waterPump.
3. hot water machine backwater control assembly as claimed in claim 1 or 2, is characterized in that described waterFlow detection device is pressure switch or water flow switch.
4. hot water machine backwater control assembly as claimed in claim 1 or 2, is characterized in that described temperatureDegree checkout gear is temperature sensor.
5. a hot water machine, is characterized in that, comprises as described in any one in claim 1 to 4Hot water machine backwater control assembly.
6. a hot water machine backwater control method, is characterized in that, comprises the following steps:
The flow signals of current in the water return pipeline of detection hot water machine, this flow signals is described water return pipelineThe flow signals of the described hot water machine water outlet of middle vicinity;
Whether the water terminal that judges described hot water machine according to the flow signals detecting is in use state;
When the water terminal of described hot water machine is in the time being used state, detect current in described water return pipelineTemperature, the temperature of these current is in described water return pipeline, to be positioned at described hot water machine water inlet and multiple water eventuallyWater flow temperature in end, between a water terminal farthest of the described delivery port of distance;
Whether the temperature that judges current in described water return pipeline is less than preset temperature;
In the time that the temperature of current in described pipeline is less than described preset temperature, opens and be installed on described return pipeWater circulating pump on road, is back to the water in described water return pipeline in the water tank of described hot water machine.
7. hot water machine backwater control method as claimed in claim 6, is characterized in that, judgement is described returnsIn water lines, the temperature of current also comprises after whether being less than the step of preset temperature:
In the time that the temperature of current in described water return pipeline is more than or equal to described preset temperature, prompting user isNoly close described water circulating pump.
8. the hot water machine backwater control method as described in claim 6 or 7, is characterized in that, by pressingPower switch or water flow switch detect described flow signals.
9. the hot water machine backwater control method as described in claim 6 or 7, is characterized in that, by temperatureDegree sensor detects described temperature signal.
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| CN203024396U (en) * | 2013-01-25 | 2013-06-26 | 中南林业科技大学 | Intelligent water heater |
| CN203052986U (en) * | 2012-12-25 | 2013-07-10 | 福州斯狄渢电热水器有限公司 | Instantaneous water heater |
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| US8505498B2 (en) * | 2009-12-17 | 2013-08-13 | Advanced Conservation Technology Distribution, Inc. | Commercial hot water control system |
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| JPS61140730A (en) * | 1984-12-13 | 1986-06-27 | Osaka Gas Co Ltd | Hot water feeder |
| CN201983421U (en) * | 2010-12-23 | 2011-09-21 | 东莞市蓝冠环保节能科技有限公司 | Water heater with water return function |
| CN102393071A (en) * | 2011-06-10 | 2012-03-28 | 樊华 | Intelligent backwater air energy heat pump water heater |
| CN203052986U (en) * | 2012-12-25 | 2013-07-10 | 福州斯狄渢电热水器有限公司 | Instantaneous water heater |
| CN203024396U (en) * | 2013-01-25 | 2013-06-26 | 中南林业科技大学 | Intelligent water heater |
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