CN103036501A - Upper alternating current fan speed regulating system of gas water heater - Google Patents
Upper alternating current fan speed regulating system of gas water heater Download PDFInfo
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- CN103036501A CN103036501A CN2012105141721A CN201210514172A CN103036501A CN 103036501 A CN103036501 A CN 103036501A CN 2012105141721 A CN2012105141721 A CN 2012105141721A CN 201210514172 A CN201210514172 A CN 201210514172A CN 103036501 A CN103036501 A CN 103036501A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 10
- 230000001105 regulatory effect Effects 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 claims abstract description 29
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 28
- 239000010703 silicon Substances 0.000 claims abstract description 28
- 239000003990 capacitor Substances 0.000 claims description 36
- 230000002457 bidirectional effect Effects 0.000 claims description 19
- 230000005622 photoelectricity Effects 0.000 claims description 14
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 claims description 3
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- 239000000567 combustion gas Substances 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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Abstract
The invention discloses an alternating current fan speed regulating system on a gas water heater, which comprises a controller, a single-phase alternating current PG motor, a silicon controlled switch circuit, a motor rotating speed feedback circuit and a zero-crossing detection circuit, wherein the silicon controlled switch circuit, the motor rotating speed feedback circuit and the zero-crossing detection circuit are respectively connected with the controller. The invention aims to realize the speed stepless speed regulation of the single-phase alternating current PG motor by controlling the electric angle between a silicon controlled switch circuit connected with the single-phase alternating current PG motor and an alternating current zero crossing point, achieve the good matching condition of gas and air, change the defect of a fixed gear fan in a limited gear, and solve the problems of unstable combustion, flameout and the like of a water heater when the air quantity is too large or too small.
Description
[technical field]
The present invention relates to a kind of gas heater and use the AC blower fan field, AC blower fan governing system on especially a kind of gas heater.
[background technology]
Traditional gas heater AC blower fan is the single speed blower fan, can't carry out speed governing to it.In order to satisfy the air supply requirement of gas heater under maximum heating load, wind speed is generally higher, and this just causes water heater working when little load condition, and air quantity is excessive, combustion instability, in addition flame-out.For addressing this problem, Double Speed Fan has appearred in industry, and its principle is by arranging tap at motor coil, blower fan being divided into two grades of height.This technology has solved water heater substantially in little load combustion instability and the problem such as flame-out, but mates bad situation for still can occur combustion gas and the air of shoulder load state.
Therefore, be necessary to solve as above problem.
[summary of the invention]
The present invention has overcome the deficiency of above-mentioned technology, AC blower fan governing system on a kind of gas heater is provided, it is connected to magnetic silicon controlled switch circuit and the size of the electrical degree between the zero-crossing of alternating current of single phase alternating current (A.C.) PG motor according to setup control, realization is carried out speed stepless speed regulation to single phase alternating current (A.C.) PG motor, reach the matched well situation of combustion gas and air, it has changed the drawback of static stall blower fan at limited gear, solves the combustion instability of water heater when air quantity is excessive or too small and the problem such as flame-out.
For achieving the above object, the present invention has adopted following technical proposal:
AC blower fan governing system on a kind of gas heater, include the single phase alternating current (A.C.) PG motor 1 that is connected on the alternating current circuit and control the magnetic silicon controlled switch circuit 2 that its input voltage waveform is effective voltage value, also be connected with motor rotate speed feedback circuit 3 on the described single phase alternating current (A.C.) PG motor 1, also be connected with on the described alternating current circuit for detection of alternating voltage zero-crossing point constantly so that the zero cross detection circuit 4 that calculates magnetic silicon controlled switch circuit 2 conductings datum mark constantly to be provided, described governing system also includes the controller 5 that constantly with realization single phase alternating current (A.C.) PG motor 1 is carried out the speed speed governing for the conducting of calculating and control magnetic silicon controlled switch circuit 2, described motor rotate speed feedback circuit 3, zero cross detection circuit 4 is connected with controller 5 respectively.
Described zero cross detection circuit 4 includes triode Q1, resistance R 1 ~ R4, capacitor C 1, and capacitor C 2, described resistance R 1 one ends are connected as the detection signal input of zero cross detection circuit 4 with resistance R 2 one ends, described resistance R 1 other end and capacitor C 1 one ends, triode Q1 base stage connects, described resistance R 2 other ends and capacitor C 1 other end, the triode Q1 emitter rear ground connection that is connected, triode Q1 collector electrode and resistance R 3 one ends, capacitor C 2 one ends, resistance R 4 one ends connect, described resistance R 3 another termination 5V voltages, capacitor C 2 other end ground connection, resistance R 4 other ends are connected with controller 5 as the signal output part of zero cross detection circuit 4.
Described motor rotate speed feedback circuit 3 includes resistance R 9, resistance R 10 and capacitor C 3, described resistance R 10 1 ends are connected with the speed feedback signal end of single phase alternating current (A.C.) PG motor 1 as the signal input part of motor rotate speed feedback circuit 3, the resistance R 10 other ends rear signal output part as motor rotate speed feedback circuit 3 that is connected with resistance R 9 one ends, capacitor C 3 one ends is connected with controller 5, described resistance R 9 another termination 5V voltages, described capacitor C 3 other end ground connection.
Described magnetic silicon controlled switch circuit 2 includes photoelectricity triode ac switch 21, resistance R 5 ~ R8, electrochemical capacitor C4, and be used for control single phase alternating current (A.C.) PG motor 1 input current voltage waveform to realize the bidirectional triode thyristor 22 of speed speed governing, described resistance R 5 one ends are connected with controller 5 as magnetic silicon controlled switch circuit 2 control signal inputs, resistance R 5 other ends are connected with photoelectricity triode ac switch 21 light-emitting diodes tube cathodes, photoelectricity triode ac switch 21 light-emitting diodes tube anodes connect 5V voltage, photoelectricity triode ac switch 21 1 outputs are connected with resistance R 8 one ends, another output is connected with bidirectional triode thyristor 22 control gate poles by resistance R 6, described bidirectional triode thyristor 22 1 lead-out terminals and resistance R 8 other ends, after being connected, electrochemical capacitor C4 negative pole connects alternating current fire wire, electrochemical capacitor C4 is anodal to be connected with resistance R 7 one ends, resistance R 7 other ends rear order cross streams PG motor 1 one voltage input ends that are connected with bidirectional triode thyristor 22 another lead-out terminals, described single phase alternating current (A.C.) PG motor 1 another voltage input end is connected with zero-power line.
The invention has the beneficial effects as follows:
1, by the control to magnetic silicon controlled switch circuit, realize the speed stepless speed regulation of water heater blower fan, it has changed the speed governing effect of limited static stall blower fan, itself and motor rotate speed feedback circuit are realized the fast jogging speed control of the blower fan of closed loop, by customer requirements water-heater efficiency and flue gas are adjusted to best condition, the more effective control that has realized intelligent weighing apparatus temperature has changed the drawback of static stall blower fan at limited gear.
2, by the incision moment of bidirectional triode thyristor conducting on the control magnetic silicon controlled switch circuit, reach the effective value input of control electric moter voltage, realize the speed governing of blower fan speed, it realizes that simply, control is convenient.
3, detect the zero crossing of ac power waveform by zero cross detection circuit, it utilizes zero cross signal to transistorized on-off action, realization is to the detection of zero crossing, the datum mark of control electric moter voltage is provided, its realization is easy, and by the motor rotate speed feedback circuit waveform that the suddenly element of motor itself produces is detected and exports to controller, reach the effect that tests the speed, be convenient to carry out as required the speed speed governing, according to setting, controller by computing after on the control magnetic silicon controlled switch circuit transistorized ON time length with control motor input voltage size, make motor speed close to target velocity, it realizes simple, is convenient to control, realize the matched well situation of combustion gas and air, the problem such as solved the combustion instability of water heater when air quantity is excessive or too small and stop working.
4, in magnetic silicon controlled switch circuit, controller uses the photoelectricity triode ac switch that bidirectional triode thyristor is carried out conducting control, realizes the effective isolation to the signal of telecommunication and control signal, prevents from disturbing, and is convenient to control.
[description of drawings]
Fig. 1 is structure principle chart of the present invention.
Fig. 2 is zero cross detection circuit circuit diagram of the present invention.
Fig. 3 is motor rotate speed feedback circuit figure of the present invention.
Fig. 4 is magnetic silicon controlled switch circuit circuit diagram of the present invention.
Fig. 5 is bidirectional triode thyristor conducting cutting point and input voltage waveform figure.
[embodiment]
Be described in further detail below in conjunction with accompanying drawing and embodiments of the present invention:
As shown in Figure 1, AC blower fan governing system on a kind of gas heater, include the single phase alternating current (A.C.) PG motor 1 that is connected on the alternating current circuit and control the magnetic silicon controlled switch circuit 2 that its input voltage waveform is effective voltage value, also be connected with motor rotate speed feedback circuit 3 on the described single phase alternating current (A.C.) PG motor 1, also be connected with on the described alternating current circuit for detection of alternating voltage zero-crossing point constantly so that the zero cross detection circuit 4 that calculates magnetic silicon controlled switch circuit 2 conductings datum mark constantly to be provided, described governing system also includes the controller 5 that constantly with realization single phase alternating current (A.C.) PG motor 1 is carried out the speed speed governing for the conducting of calculating and control magnetic silicon controlled switch circuit 2, described motor rotate speed feedback circuit 3, zero cross detection circuit 4 is connected with controller 5 respectively.
As mentioned above, magnetic silicon controlled switch circuit 2, single phase alternating current (A.C.) PG motor 1, motor rotate speed feedback circuit 3, controller 5, last magnetic silicon controlled switch circuit 2 now, realized the fast jogging speed control of blower fan of closed loop, by customer requirements water-heater efficiency and flue gas are adjusted to best condition, the more effective control that has realized intelligent weighing apparatus temperature has changed the drawback of static stall blower fan at limited gear.
In the present embodiment, described zero cross detection circuit 4 includes triode Q1, resistance R 1 ~ R4, capacitor C 1, and capacitor C 2, described resistance R 1 one ends are connected as the detection signal input of zero cross detection circuit 4 with resistance R 2 one ends, described resistance R 1 other end and capacitor C 1 one ends, triode Q1 base stage connects, described resistance R 2 other ends and capacitor C 1 other end, the triode Q1 emitter rear ground connection that is connected, triode Q1 collector electrode and resistance R 3 one ends, capacitor C 2 one ends, resistance R 4 one ends connect, described resistance R 3 another termination 5V voltages, capacitor C 2 other end ground connection, resistance R 4 other ends are connected with controller 5 as the signal output part of zero cross detection circuit 4.
As mentioned above, zero cross detection circuit 4 is connected on the alternating current circuit live wire, detect the zero crossing of alternating voltage waveform, it utilizes near zero point voltage signal to the shutoff effect of triode Q1, when the zero cross signal appearance, cut-off state appears in triode Q1, and zero cross detection circuit 4 output pulse signals are to controller 5, realization is to the detection of zero crossing, and its realization is easy.
In the present embodiment, described motor rotate speed feedback circuit 3 includes resistance R 9, resistance R 10 and capacitor C 3, described resistance R 10 1 ends are connected with the speed feedback signal end of single phase alternating current (A.C.) PG motor 1 as the signal input part of motor rotate speed feedback circuit 3, the resistance R 10 other ends rear signal output part as motor rotate speed feedback circuit 3 that is connected with resistance R 9 one ends, capacitor C 3 one ends is connected with controller 5, described resistance R 9 another termination 5V voltages, described capacitor C 3 other end ground connection.
As mentioned above, the waveform that the suddenly element of 3 pairs of motors of motor rotate speed feedback circuit itself produces detects and exports to controller 5, reaches the effect that tests the speed, and is convenient to carry out as required the speed speed governing.
In the present embodiment, described magnetic silicon controlled switch circuit 2 includes photoelectricity triode ac switch 21, resistance R 5 ~ R8, electrochemical capacitor C4, and be used for control single phase alternating current (A.C.) PG motor 1 input current voltage waveform to realize the bidirectional triode thyristor 22 of speed speed governing, described resistance R 5 one ends are connected with controller 5 as magnetic silicon controlled switch circuit 2 control signal inputs, resistance R 5 other ends are connected with photoelectricity triode ac switch 21 light-emitting diodes tube cathodes, photoelectricity triode ac switch 21 light-emitting diodes tube anodes connect 5V voltage, photoelectricity triode ac switch 21 1 outputs are connected with resistance R 8 one ends, another output is connected with bidirectional triode thyristor 22 control gate poles by resistance R 6, described bidirectional triode thyristor 22 1 lead-out terminals and resistance R 8 other ends, after being connected, electrochemical capacitor C4 negative pole connects alternating current fire wire, electrochemical capacitor C4 is anodal to be connected with resistance R 7 one ends, resistance R 7 other ends rear order cross streams PG motor 1 one voltage input ends that are connected with bidirectional triode thyristor 22 another lead-out terminals, described single phase alternating current (A.C.) PG motor 1 another voltage input end is connected with zero-power line.
As mentioned above, controller 5 uses 21 pairs of bidirectional triode thyristors of photoelectricity triode ac switch 22 to carry out conducting control, realizes the effective isolation to the signal of telecommunication and control signal, prevents from disturbing, and is convenient to control.
As mentioned above, rotating speed according to working control policy control single phase alternating current (A.C.) PG motor 1, controller 5 is by calculating the incision moment of bidirectional triode thyristor 22 conductings on the control magnetic silicon controlled switch circuit 2 after the computing, utilize everything to enter constantly and a rear zero crossing between time period control the effective value size of motor input voltage, as shown in Figure 5, when 1=180 ° of bidirectional triode thyristor 22 angle of flow α, the terminal voltage of motor waveform is sinusoidal wave, i.e. fully conducting state; When 1＜180 ° of thyristor operating angle α, the terminal voltage of motor waveform shown in the figure solid line, i.e. non-fully conducting state, effective value reduces; α 1 is less, and conducting state is fewer, and then voltage effective value is less, and the magnetic field that produces is less, and then the rotating speed of motor is lower.By as mentioned above to the conducting of bidirectional triode thyristor 22 control constantly, make motor speed close to target velocity, and verify by motor rotate speed feedback circuit 3 whether present speed meets the demands, it realizes simple, be convenient to control, realize the matched well situation of combustion gas and air, the problem such as solved the combustion instability of water heater when air quantity is excessive or too small and stop working.
As mentioned above; what this case was protected is AC blower fan governing system on a kind of gas heater; it is by AC blower fan governing system on a kind of gas heater; it is connected to magnetic silicon controlled switch circuit 2 and the size of the electrical degree between the zero-crossing of alternating current of single phase alternating current (A.C.) PG motor 1 according to setup control; realization is carried out speed stepless speed regulation to single phase alternating current (A.C.) PG motor 1; reach the matched well situation of combustion gas and air; it has changed the drawback of static stall blower fan at limited gear, solves the combustion instability of water heater when air quantity is excessive or too small and the problem such as flame-out.All circuit identical with this case structure or this case embodiment are equal to replacement and all should be shown in the protection range that falls into this case.
Claims (4)
1. AC blower fan governing system on the gas heater, it is characterized in that including the single phase alternating current (A.C.) PG motor (1) that is connected on the alternating current circuit and control the magnetic silicon controlled switch circuit that its input voltage waveform is effective voltage value (2), also be connected with motor rotate speed feedback circuit (3) on the described single phase alternating current (A.C.) PG motor (1), also be connected with on the described alternating current circuit for detection of alternating voltage zero-crossing point constantly so that the zero cross detection circuit (4) that calculates magnetic silicon controlled switch circuit (2) conducting datum mark constantly to be provided, described governing system also includes the controller (5) that constantly with realization single phase alternating current (A.C.) PG motor (1) is carried out the speed speed governing for the conducting of calculating and control magnetic silicon controlled switch circuit (2), described motor rotate speed feedback circuit (3), zero cross detection circuit (4) is connected with controller (5) respectively.
2. AC blower fan governing system on a kind of gas heater according to claim 1, it is characterized in that described zero cross detection circuit (4) includes triode Q1, resistance R 1 ~ R4, capacitor C 1, and capacitor C 2, described resistance R 1 one ends are connected as the detection signal input of zero cross detection circuit (4) with resistance R 2 one ends, described resistance R 1 other end and capacitor C 1 one ends, triode Q1 base stage connects, described resistance R 2 other ends and capacitor C 1 other end, the triode Q1 emitter rear ground connection that is connected, triode Q1 collector electrode and resistance R 3 one ends, capacitor C 2 one ends, resistance R 4 one ends connect, described resistance R 3 another termination 5V voltages, capacitor C 2 other end ground connection, resistance R 4 other ends are connected with controller (5) as the signal output part of zero cross detection circuit (4).
3. AC blower fan governing system on a kind of gas heater according to claim 1, it is characterized in that described motor rotate speed feedback circuit (3) includes resistance R 9, resistance R 10, and capacitor C 3, described resistance R 10 1 ends are connected with the speed feedback signal end of single phase alternating current (A.C.) PG motor (1) as the signal input part of motor rotate speed feedback circuit (3), resistance R 10 other ends and resistance R 9 one ends, the capacitor C 3 one ends rear signal output part as motor rotate speed feedback circuit (3) that is connected is connected with controller (5), described resistance R 9 another termination 5V voltages, described capacitor C 3 other end ground connection.
4. AC blower fan governing system on a kind of gas heater according to claim 1, it is characterized in that described magnetic silicon controlled switch circuit (2) includes photoelectricity triode ac switch (21), resistance R 5 ~ R8, electrochemical capacitor C4, and be used for control single phase alternating current (A.C.) PG motor (1) input current voltage waveform to realize the bidirectional triode thyristor (22) of speed speed governing, described resistance R 5 one ends are connected with controller (5) as magnetic silicon controlled switch circuit (2) control signal input, resistance R 5 other ends are connected with photoelectricity triode ac switch (21) light-emitting diodes tube cathode, photoelectricity triode ac switch (21) light-emitting diodes tube anode connects 5V voltage, photoelectricity triode ac switch (21) one outputs are connected with resistance R 8 one ends, another output is connected with bidirectional triode thyristor (22) control gate pole by resistance R 6, described bidirectional triode thyristor (22) one lead-out terminals and resistance R 8 other ends, after being connected, electrochemical capacitor C4 negative pole connects alternating current fire wire, electrochemical capacitor C4 is anodal to be connected with resistance R 7 one ends, resistance R 7 other ends rear order cross streams PG motor (1) one voltage input end that is connected with another lead-out terminal of bidirectional triode thyristor (22), another voltage input end of described single phase alternating current (A.C.) PG motor (1) is connected with zero-power line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105141721A CN103036501A (en) | 2012-12-04 | 2012-12-04 | Upper alternating current fan speed regulating system of gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105141721A CN103036501A (en) | 2012-12-04 | 2012-12-04 | Upper alternating current fan speed regulating system of gas water heater |
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| CN2012105141721A Pending CN103036501A (en) | 2012-12-04 | 2012-12-04 | Upper alternating current fan speed regulating system of gas water heater |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560740A (en) * | 2013-10-06 | 2014-02-05 | 青岛派如环境科技有限公司 | Single phase alternating current voltage adjustment speed change fan |
| CN104579020A (en) * | 2013-10-25 | 2015-04-29 | 广东美的制冷设备有限公司 | Startup control method and startup control system for PG speed regulating motor |
| CN106374807A (en) * | 2016-09-29 | 2017-02-01 | 广东美的制冷设备有限公司 | AC motor control method and device and air conditioner |
| CN106712500A (en) * | 2016-12-23 | 2017-05-24 | 广东志高暖通设备股份有限公司 | Method and system for controlling chopper circuit and air conditioner |
| CN108005942A (en) * | 2018-01-02 | 2018-05-08 | 成都前锋电子有限责任公司 | A kind of gas instantaneous water heater AC blower fan control system |
| CN111786597A (en) * | 2020-07-01 | 2020-10-16 | 厦门鼎安电子有限公司 | Speed regulating method for AC single-phase motor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560740A (en) * | 2013-10-06 | 2014-02-05 | 青岛派如环境科技有限公司 | Single phase alternating current voltage adjustment speed change fan |
| CN104579020A (en) * | 2013-10-25 | 2015-04-29 | 广东美的制冷设备有限公司 | Startup control method and startup control system for PG speed regulating motor |
| CN104579020B (en) * | 2013-10-25 | 2018-09-11 | 广东美的制冷设备有限公司 | The startup control method and startup control system of PG speed regulating motors |
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| CN106712500A (en) * | 2016-12-23 | 2017-05-24 | 广东志高暖通设备股份有限公司 | Method and system for controlling chopper circuit and air conditioner |
| CN108005942A (en) * | 2018-01-02 | 2018-05-08 | 成都前锋电子有限责任公司 | A kind of gas instantaneous water heater AC blower fan control system |
| CN108005942B (en) * | 2018-01-02 | 2023-11-24 | 成都前锋电子有限责任公司 | Alternating current fan control system of gas rapid water heater |
| CN111786597A (en) * | 2020-07-01 | 2020-10-16 | 厦门鼎安电子有限公司 | Speed regulating method for AC single-phase motor |
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Application publication date: 20130410 |