CN100458614C - Electromagnetic valve control circuit and electromagnetic valve control method for water heater - Google Patents
Electromagnetic valve control circuit and electromagnetic valve control method for water heater Download PDFInfo
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- CN100458614C CN100458614C CNB2006100738711A CN200610073871A CN100458614C CN 100458614 C CN100458614 C CN 100458614C CN B2006100738711 A CNB2006100738711 A CN B2006100738711A CN 200610073871 A CN200610073871 A CN 200610073871A CN 100458614 C CN100458614 C CN 100458614C
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- solenoid valve
- signal
- water yield
- fire safety
- control
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Abstract
A solenoid valve control circuit of water heater is prepared for using temperature detection switch to detect existence of residual fire and outputting detected signal to central processing unit, controlling on-off state of gas by using central pressing unit to control solenoid valve according to signal detected out by temperature detection switch in order to avoid fire accident caused by gas leakage. Its controlling method is also disclosed.
Description
Technical field
The present invention relates to a kind of solenoid valve control circuit and electromagnetic valve control method, particularly a kind of solenoid valve control circuit of water heater and electromagnetic valve control method.
Background technology
The solenoid valve of water heater is used to provide gas, heats the water in the water heater of flowing through to burn.See also Fig. 1, Fig. 1 illustrates the functional block diagram of solenoid valve control circuit, and this figure is the functional block diagram of known water heater solenoid control.Wherein CPU (central processing unit) 101 receives the detection signal of water yield detecting device 102 and residual fire safety switch 103, and first power end 104 is directly powered to solenoid valve 105 and proportioning valve 106, and 107 at second source end is connected in second source end driving circuit 108 and 109.And CPU (central processing unit) 101 detects the detection signal of the water yields by water yield detecting device 102 and when having learnt that water passes through to need heating, then output signal to second source end driving circuit 108 and 109.Second source end driving circuit 108 and 109 just is sent to solenoid valve 105 and proportioning valve 106 with the power supply of second source end 107, and carries out the unlatching of gas and the control of flow respectively behind the power supply of solenoid valve 105 and proportioning valve 106 reception first power ends 104 and second source end 107.Wherein first power end 104 can be positive supply, and second source end 107 is a negative supply; Or first power end 104 be negative supply, second source end 107 is a positive supply.
Then consult Fig. 2, Fig. 2 illustrates the functional block diagram of solenoid valve power-saving control circuit, has added the design of power saving for the solenoid valve control circuit of known water heater.Wherein power positive end 112 provides 1/2 positive supply to solenoid valve 105, and CPU (central processing unit) 101 receives the detection signal of water yield detecting device 102 and residual fire safety switch 103, when CPU (central processing unit) 101 has learnt that by the detection signal of the water yield detecting device 102 detection water yields water passes through to need heating, then notify power positive end driving circuit 113 to drive solenoid valves 105 and provide positive supply to proportioning valve 106.CPU (central processing unit) 101 is also notified the extreme driving circuit 115 of power-and 116 simultaneously, and the negative supply that power-extreme 114 is provided offers solenoid valve 105 and proportioning valve 106.And just open gas behind the negative supply of 1/2 positive supply that solenoid valve 105 reception power positive ends 112 provide and power-extreme 114, in addition, after proportioning valve 106 receives the negative supply that positive supply that power positive ends 112 provide and power-extreme 114 provide by the extreme driving circuit 116 of power positive end driving circuit 113 and power-, just according to the control of the command execution gas flow of CPU (central processing unit) 101.
Yet though the solenoid valve control circuit of Fig. 2 has added the design of power saving, but still the same with the solenoid valve control circuit of Fig. 1, whether the existence that both residual fire safety switches 103 all only can detect residual fire can't do the operation of strain to detecting residual fire.Simultaneously, if CPU (central processing unit) 101 breaks down, give power positive end driving circuit 113 and transmit wrong control signal, make in the time of need not lighting a fire heating, solenoid valve 105 but still continues to open gas, and the situation that causes gas to leak adds that the existence of residual fire may cause the gas gas explosion.Therefore known water heater solenoid valve control circuit still remains to be improved part.
Summary of the invention
In view of this, the invention provides a kind of solenoid valve control circuit of water heater, make water heater except function, prevent the function of safety protection of gas gas explosion in addition with power saving.
The invention provides a kind of solenoid valve control circuit of water heater, it is characterized in that, comprise a residual fire safety switch, a residual fire safety driving circuit, a water yield detecting unit, a CPU (central processing unit), an explosion-proof driving circuit, a negative pole end driving circuit and a solenoid valve.Wherein receive a positive supply by residual fire safety switch, give residual fire safety driving circuit in order to detect residual output one positive power signal of fighting, residual fire safety driving circuit is exported a residual fire safety control signal according to positive power signal again.And water yield detecting unit is used to detect the water yield of water heater and export water yield detection control signal.Utilize CPU (central processing unit) to receive residual fire safety control signal and water yield detection control signal, to export a positive supply control signal and a negative supply control signal.And explosion-proof driving circuit is connected in CPU (central processing unit), in order to receive positive supply control signal and positive power signal, exports solenoid valve anode control power supply after treatment.And the negative pole end driving circuit receives the negative supply control signal that CPU (central processing unit) transmits, and exports solenoid valve negative terminal control power supply after treatment.Solenoid valve just receives solenoid valve anode control power supply and solenoid valve negative terminal control electric power starting gas.
The present invention also provides a kind of electromagnetic valve control method of water heater, it is characterized in that, detects the water yield of water heater at the beginning earlier, and exports a water yield and detect control signal.Start the residual fire of residual fire safety switch then, and export a residual fire safety control signal and a positive power signal with the detection water heater.After then CPU (central processing unit) receives that the residual fire safety control signal and the water yield detect control signal, judge the existence that enough water yields is arranged and do not have residual fire, just export a positive supply control signal and a negative supply control signal.Utilize an explosion-proof driving circuit to handle positive power signal and positive supply control signal again, and in handling back output one solenoid valve anode control power supply.Utilize a negative pole end driving circuit to handle the negative supply control signal on the other hand, and solenoid valve negative terminal control power supply is provided after handling.Offer solenoid valve to open gas by solenoid valve anode control power supply and solenoid valve negative terminal at last.
According to the solenoid valve control circuit and the electromagnetic valve control method of water heater of the present invention, water heater prevents the function of safety protection of gas gas explosion in addition except the function with power saving.
For enabling further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the present invention is limited.
Description of drawings
Fig. 1 is the functional block diagram of known solenoid valve control circuit;
Fig. 2 is the functional block diagram of known solenoid valve power-saving control circuit;
Fig. 3 is the functional block diagram of solenoid valve control circuit of the present invention;
Fig. 4 is the circuit diagram of solenoid valve control circuit of the present invention; And
Fig. 5 is the operational flowchart of solenoid valve control circuit of the present invention.
Wherein, description of reference numerals is as follows:
[known technology]
101 CPU (central processing unit), 102 water yield detecting devices
103 residual fire safety switch 104 first power ends
105 solenoid valves, 106 proportioning valves
107 second source ends, 108,109 second source end driving circuits
112 power positive ends, 113 power positive end driving circuits
The extreme driving circuit of extreme 115,116 power-s of 114 power-s
[the present invention]
301 CPU (central processing unit), 302 water yield detecting units
303 residual fire safety switch 304 power positive ends
305 residual fire safety driving circuit 306 explosion-proof driving circuits
The extreme 308 negative pole end driving circuits of 307 power-s
309 solenoid valves
Embodiment
See also Fig. 3, Fig. 3 is the functional block diagram of solenoid valve control circuit of the present invention, as shown in Figure 3, solenoid valve control circuit of the present invention comprises residual fire safety switch 303, residual fire safety driving circuit 305, water yield detecting unit 302, CPU (central processing unit) 301, explosion-proof driving circuit 306, negative pole end driving circuit 308 and solenoid valve 309.Wherein residual fire safety switch 303 receives the positive supply that power positive end 304 is sent here, and whether the detection water heater has residual fire to exist.Open residual fire safety switch 303 then, export this positive supply and give explosion-proof driving circuit 306, and give residual fire safety driving circuit 305.Residual fire safety driving circuit 305 just transmits a residual fire safety signal to CPU (central processing unit) 301.And water yield detecting unit 302 is used to detect the water yield, and exports a signal that detects the water yield and give CPU (central processing unit) 301.Receive the signal of the signal of the water yield detecting unit 302 detection water yields and the residual fire of detection that residual fire safety driving circuit 305 is exported when CPU (central processing unit) 301 after, just export a positive supply control signal and give explosion-proof driving circuit 306, and a negative supply control signal is given the negative pole end driving circuit 308 that is connected in power-extreme 307.Explosion-proof driving circuit 306 will be handled this positive supply control signal and export solenoid valve anode control power supply and give solenoid valve 309, and output one solenoid valve negative terminal control power supply is given solenoid valve 309 after negative pole end driving circuit 308 these negative supply control signals of processing.Solenoid valve 309 is promptly opened gas after receiving solenoid valve anode control power supply and solenoid valve negative terminal control power supply.
And if above-mentioned residual fire safety switch 303 detects the existence of residual fire, the residual fiery detection signal of residual fire safety switch 303 outputs sends CPU (central processing unit) 301 to through residual fire safety driving circuit 305.CPU (central processing unit) 301 has been learnt that residual fire exists and has then been issued orders to explosion-proof driving circuit 306, make explosion-proof driving circuit 306 stop power supply to solenoid valve 309, simultaneously also order negative pole end driving circuit 308 to stop power supply to solenoid valve 309, and solenoid valve 309 cuts out with stop supplies gas, can avoid residual fiery actuation gas.In addition, residual fire safety switch 303 is a temperature detect switch, and the temperature by detecting residual fire is to detect existing of residual fire.And CPU (central processing unit) 301 is after starting solenoid valve 309, with pulse bandwidth modulation (pulsewidth modulation, PWM) control output negative supply control signal, and the solenoid valve negative terminal control power supply that the negative supply control signal of PWM is handled through PWM by 308 outputs of negative pole end driving circuit, and then be supplied to solenoid valve 309, can reduce the power supply of keeping solenoid valve 309 work thus, reach less electricity consumption.
Then see also Fig. 4, Fig. 4 is the circuit diagram of solenoid valve control circuit of the present invention, and wherein residual fire safety switch 303 is used to detect residual output one positive voltage signal of fighting and gives residual fire safety driving circuit 305 and explosion-proof driving circuit 306.And residual fire safety driving circuit 305 is exported residual fire safety signal to CPU (central processing unit) 301 after receiving positive voltage signal, water yield detecting unit 302 utilizes water yield detecting device to detect the water yield on the other hand, to detect the signal of the water yield again and handle, and export a water yield detection signal then and give CPU (central processing unit) 301 through a water yield testing circuit.CPU (central processing unit) 301 can learn by receiving residual fire safety signal and water yield detection signal whether the water yield reaches enough whether residual fire existence is arranged then.And it is enough and when not having residual fire, CPU (central processing unit) 301 outputs one positive supply control signal gives negative pole end driving circuit 308 for explosion-proof driving circuit 306 and negative supply control signal when the water yield.
After above-mentioned explosion-proof driving circuit 306 passes through bandwidth-limited circuit and current rectifying and wave filtering circuit processing with the positive supply control signal, conducting one on-off circuit and the positive power signal that residual fire safety switch 303 transmits is passed through is supplied with solenoid valve 309 and export solenoid valve anode control power supply.Wherein utilize bandwidth-limited circuit to judge whether the positive supply control signal of CPU (central processing unit) 301 outputs is normal.If for example CPU (central processing unit) 301 breaks down, the positive supply control signal of output will be a direct current voltage signal, and it will be intercepted by bandwidth-limited circuit, and not provide solenoid valve anode control power supply to solenoid valve 309 work.Prevent to cause the situation of solenoid valve 309 maloperations thus because of the fault of CPU (central processing unit) 301.
On the other hand, CPU (central processing unit) 301 is exported to the negative supply control signal of negative pole end driving circuit 308, and in starting solenoid valve 309 backs (about 3 seconds), utilize PWM to control by CPU (central processing unit) 301 and handle output, be the negative supply control signal of a PWM.And after the negative supply control signal of negative pole end driving circuit 308 processing PWM, export solenoid valve negative terminal control power supply and give solenoid valve 309.Yet, can reduce the power supply that is supplied to solenoid valve 309 (can be reduced to 1/2 power supply) and the unlatching that keeps solenoid valve 309, to reach purpose of power saving by the processing of PWM control.
In addition, if above-mentioned residual fire safety switch 303 detects residual fire, residual fire safety switch 303 just can cut out, and the residual fire safety signalisation CPU (central processing unit) 301 of residual fire safety driving circuit 305 outputs, CPU (central processing unit) 301 is just controlled explosion-proof driving circuit 306 and negative pole end driving circuit 308 stops power supply to solenoid valve 309, solenoid valve 309 cuts out and stop to export gas, in case residual fiery actuation gas.
Then see also Fig. 5, Fig. 5 is the operational flowchart of solenoid valve control circuit of the present invention.At first utilize water yield detecting device to detect the inflow of water heater, export water yield detection signal (as Fig. 5 step S501) by water yield testing circuit again.Then start residual fire safety switch output positive power signal, and export residual fire safety signal, detect exist (as Fig. 5 step S503) that has or not residual fire simultaneously by residual fire safety driving circuit.Utilize CPU (central processing unit) reception water yield detection signal and residual fire safety signal with output positive supply control signal and negative supply control signal (as Fig. 5 step S505) then.Next utilize explosion-proof driving circuit with this positive supply control signal after bandwidth-limited circuit and plastic filter circuit are handled, the actuating switch circuit is allowing positive power signal pass through, and output solenoid valve anode control power supply.Handle the negative supply control signal by the negative pole end driving circuit simultaneously, and export this solenoid valve negative terminal control power supply (as Fig. 5 step S507).Come control electromagnetic valve to come switch gas (as Fig. 5 step S509) according to solenoid valve anode control power supply and solenoid valve negative terminal control power supply at last.
And above-mentioned residual fire safety switch 303 is a temperature detect switch, if there is residual fiery existence will detect the temperature of residual fire and close residual fire safety switch 303, just and residual fire safety driving circuit 305 transmits residual fire safety signal to CPU (central processing unit) 301.CPU (central processing unit) 301 is according to residual fire safety signal, and the stop supplies power supply is given solenoid valve 309, and solenoid valve 309 cuts out with stop supplies gas.In addition, after CPU (central processing unit) 301 receives residual fire safety signal and water yield detection signal, output negative supply control signal a period of time, and after starting solenoid valve 309, just control with PWM and export the negative supply control signal.And after handling by the negative pole end driving circuit with the negative supply control signal of PWM control output, output solenoid valve negative terminal control power supply is kept the required power supply of solenoid valve 309 work to provide.Utilize the negative supply control signal of PWM control output to cooperate negative pole end driving circuit 308 to handle, allow solenoid valve negative terminal control power supply, can save energy thus less than the negative supply control signal.In addition, if the positive supply control signal of above-mentioned CPU (central processing unit) 301 outputs is a direct current signal, the bandwidth-limited circuit of then explosion-proof driving circuit 306 will intercept the positive supply control signal and on-off circuit that can't the explosion-proof driving circuit 306 of conducting, so that positive power signal can't be passed through, so do not have the output of solenoid valve anode control power supply, solenoid valve 309 cut out.In case the situation that causes abnormal gas to leak because of CPU (central processing unit) 301 faults.
But, the above, only for the detailed description and the accompanying drawing of the preferred specific embodiment of the present invention, feature of the present invention is not limited thereto, be not that all scopes of the present invention should be as the criterion with following claim, all embodiment that meets the spirit variation similar with it of claim of the present invention in order to restriction the present invention, all should be contained in the category of the present invention, those skilled in the art can think easily and variation or revise all can be encompassed in the following claim of the present invention.
Claims (17)
1, a kind of solenoid valve control circuit of water heater is characterized in that, comprising:
One residual fire safety switch connects a positive supply, is used to detect residual output one positive power signal of fighting;
One residual fire safety driving circuit receives this positive power signal and exports a residual fire safety control signal;
One water yield detecting unit is used to detect the water yield and exports a water yield detection signal;
One CPU (central processing unit) receives this residual fire safety control signal and this water yield detection signal, exports a positive supply control signal and a negative supply control signal;
One explosion-proof driving circuit receives this positive supply control signal and this positive power signal, exports solenoid valve anode control power supply;
One negative pole end driving circuit receives this negative supply control signal, exports solenoid valve negative terminal control power supply; And
One solenoid valve receives this solenoid valve anode control power supply and this solenoid valve negative terminal control power supply, controls the switch of gas thus.
2, solenoid valve control circuit as claimed in claim 1 is characterized in that this residual fire safety switch is a temperature detect switch.
3, solenoid valve control circuit as claimed in claim 1 is characterized in that this water yield detecting unit comprises a water yield detecting device and a water yield testing circuit, detects the water yield by this water yield detecting device, exports this water yield detection signal by this water yield testing circuit again.
4, solenoid valve control circuit as claimed in claim 1 is characterized in that this explosion-proof driving circuit comprises a bandwidth-limited circuit, in order to detect this positive supply control signal.
5, solenoid valve control circuit as claimed in claim 1 is characterized in that this negative supply control signal is a pulse bandwidth modulation signal, exports this solenoid valve negative terminal control power supply to provide negative supply to this solenoid valve by this negative pole end driving circuit.
6, control circuit as claimed in claim 1 is characterized in that this solenoid valve negative terminal control power supply is less than this negative supply control signal.
7, a kind of electromagnetic valve control method of water heater is characterized in that, comprises the steps:
Detect the water yield and export a water yield detection signal;
Start residual fire safety switch and export a positive power signal and detect residual fire, export a residual fire safety signal according to testing result;
After receiving this residual fire safety signal and this water yield detection control signal, export a positive supply control signal and a negative supply control signal;
Handle this positive power signal according to this positive supply control signal, and export solenoid valve anode control power supply;
Handle this negative supply control signal, and export solenoid valve negative terminal control power supply; And
Control this solenoid valve according to this solenoid valve anode control power supply and this solenoid valve negative terminal control power supply.
8, electromagnetic valve control method as claimed in claim 7 is characterized in that utilizing a water yield detecting device to detect the inflow of water heater, exports this water yield detection signal by a water yield testing circuit again.
9, electromagnetic valve control method as claimed in claim 7 is characterized in that this positive power signal of this residual fire safety switch output offers a residual fire safety driving circuit with this residual fire safety signal of output.
10, electromagnetic valve control method as claimed in claim 9 is characterized in that utilizing a CPU (central processing unit) to receive this residual fire safety signal and this water yield detection signal.
11, electromagnetic valve control method as claimed in claim 10, detect the existence of residual fire if it is characterized in that this residual fire safety switch, this CPU (central processing unit) is according to this residual fire safety signal, and the stop supplies power supply is given this solenoid valve, makes this closed electromagnetic valve with stop supplies gas.
12, electromagnetic valve control method as claimed in claim 11 is characterized in that this residual fire safety switch is a temperature detect switch, if there is residual fiery existence will detect the temperature of residual fire and close this residual fire safety switch.
13, electromagnetic valve control method as claimed in claim 10 is characterized in that exporting this negative supply control signal with pulse bandwidth modulation control after this CPU (central processing unit) receives this residual fire safety signal and this water yield detection signal.
14, electromagnetic valve control method as claimed in claim 13 is characterized in that this CPU (central processing unit) exports this negative supply control signal a period of time, and after starting this solenoid valve, just with this negative supply control signal of pulse bandwidth modulation control output.
15, electromagnetic valve control method as claimed in claim 13 is characterized in that utilizing a negative pole end driving circuit to handle the negative supply control signal of this pulse bandwidth modulation, and exports this solenoid valve negative terminal control power supply, to provide this solenoid valve required working power.
16, electromagnetic valve control method as claimed in claim 7, it is characterized in that utilizing an explosion-proof driving circuit to handle this positive power signal according to this positive supply control signal, with this positive supply control signal after a bandwidth-limited circuit and a plastic filter circuit are handled, conducting one on-off circuit is controlled power supply so that this positive power signal is passed through and export this solenoid valve anode.
17, electromagnetic valve control method as claimed in claim 16, it is characterized in that if this positive supply control signal is a direct current signal, then bandwidth-limited circuit will intercept this positive supply control signal and can't this on-off circuit of conducting, this positive power signal can't be passed through, this solenoid valve anode control power supply output does not make this closed electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100738711A CN100458614C (en) | 2006-04-06 | 2006-04-06 | Electromagnetic valve control circuit and electromagnetic valve control method for water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100738711A CN100458614C (en) | 2006-04-06 | 2006-04-06 | Electromagnetic valve control circuit and electromagnetic valve control method for water heater |
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| Publication Number | Publication Date |
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| CN101051225A CN101051225A (en) | 2007-10-10 |
| CN100458614C true CN100458614C (en) | 2009-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100738711A Expired - Fee Related CN100458614C (en) | 2006-04-06 | 2006-04-06 | Electromagnetic valve control circuit and electromagnetic valve control method for water heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183094A (en) * | 2011-06-02 | 2011-09-14 | 浙江大学 | Device and method based on intelligent water temperature control of water heater and water conservation design of outer pipeline |
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| CN101840208A (en) * | 2010-03-29 | 2010-09-22 | 中广核工程有限公司 | Method and system for interlocking main valve and pressure balance valve of heater system of nuclear power station |
| CN103900103B (en) * | 2014-04-16 | 2016-01-06 | 上海禾森机电有限公司 | A kind of control method of air blast burner |
| CN105443840B (en) * | 2016-01-08 | 2017-10-10 | 浙江大学 | A kind of magnetic valve intelligence control system and its method |
| CN109341090B (en) * | 2018-09-10 | 2021-03-19 | 广州迪森家居环境技术有限公司 | Control method and control device for residual fire fault of gas wall-mounted boiler |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2213955Y (en) * | 1994-05-09 | 1995-11-29 | 刘茂庭 | Multifunction automatic electric water heater |
| CN1160162A (en) * | 1995-07-31 | 1997-09-24 | 林内株式会社 | Combustion device |
| CN2348315Y (en) * | 1998-07-24 | 1999-11-10 | 顺德市万和企业集团公司 | Gas water heater with double-pole switch |
| US6056000A (en) * | 1996-12-30 | 2000-05-02 | Whirlpool Corporation | Control system for pulse width modulation-operated solenoid valves |
| CN2418432Y (en) * | 2000-04-10 | 2001-02-07 | 广东万家乐燃气具有限公司 | Controller for water heater |
| CN2628939Y (en) * | 2003-05-20 | 2004-07-28 | 成都三创电子有限公司 | Electronic water-gas linkage apparatus for gas combustion water heater |
-
2006
- 2006-04-06 CN CNB2006100738711A patent/CN100458614C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2213955Y (en) * | 1994-05-09 | 1995-11-29 | 刘茂庭 | Multifunction automatic electric water heater |
| CN1160162A (en) * | 1995-07-31 | 1997-09-24 | 林内株式会社 | Combustion device |
| US6056000A (en) * | 1996-12-30 | 2000-05-02 | Whirlpool Corporation | Control system for pulse width modulation-operated solenoid valves |
| CN2348315Y (en) * | 1998-07-24 | 1999-11-10 | 顺德市万和企业集团公司 | Gas water heater with double-pole switch |
| CN2418432Y (en) * | 2000-04-10 | 2001-02-07 | 广东万家乐燃气具有限公司 | Controller for water heater |
| CN2628939Y (en) * | 2003-05-20 | 2004-07-28 | 成都三创电子有限公司 | Electronic water-gas linkage apparatus for gas combustion water heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183094A (en) * | 2011-06-02 | 2011-09-14 | 浙江大学 | Device and method based on intelligent water temperature control of water heater and water conservation design of outer pipeline |
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| CN101051225A (en) | 2007-10-10 |
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