CN108005942B - Alternating current fan control system of gas rapid water heater - Google Patents
Alternating current fan control system of gas rapid water heater Download PDFInfo
- Publication number
- CN108005942B CN108005942B CN201810002784.XA CN201810002784A CN108005942B CN 108005942 B CN108005942 B CN 108005942B CN 201810002784 A CN201810002784 A CN 201810002784A CN 108005942 B CN108005942 B CN 108005942B
- Authority
- CN
- China
- Prior art keywords
- resistor
- circuit
- fan
- alternating current
- controlled rectifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 40
- 239000010703 silicon Substances 0.000 claims abstract description 40
- 230000001360 synchronised effect Effects 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Electrical Variables (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses an alternating current fan control system of a gas rapid water heater, which comprises a fan synchronous signal circuit, a singlechip circuit, a silicon controlled rectifier control circuit, a power supply circuit and a gas rapid water heater fan, wherein the output end of the fan synchronous signal circuit is connected with the input end of the singlechip circuit, the output end of the singlechip circuit is connected with the input end of the silicon controlled rectifier control circuit, the output end of the silicon controlled rectifier control circuit is connected with the input end of the fan, and the power supply circuit provides working voltage for each circuit. The invention realizes the control of all fans of the gas rapid water heater, can randomly adjust and control the speed of the fans according to the needs of users, overcomes the defects in the prior art, and greatly facilitates the needs of the users on the fan control.
Description
Technical Field
The invention relates to the field of gas rapid water heaters, in particular to a control system for controlling all fans of a gas rapid water heater by using a silicon controlled rectifier circuit.
Background
The prior full-automatic forced exhaust or intelligent constant temperature gas rapid water heater and wall hanging stove adopting AC power supply in China generally adopts relay or controllable silicon for controlling AC fan. If the speed is controlled by a relay, the speed cannot be regulated, if the speed is to be regulated, multiple taps of the motor are needed, and the speed is controlled by a plurality of relays respectively, so that the cost is high, the speed cannot be regulated at will, if the speed is to be regulated by a silicon controlled rectifier, the speed can be generally controlled and regulated, but all motors, such as shaded pole motors or other special motors, cannot be controlled, and due to the influence of parameters, the synchronous signals are misplaced, so that the silicon controlled rectifier cannot be turned off or on.
Disclosure of Invention
Aiming at the defects of the technology, the invention discloses an alternating current fan control system of a gas rapid water heater, which can control all fans through a silicon controlled rectifier and can randomly adjust and control the fan speed according to the needs of users.
The invention adopts the following technical scheme: the utility model provides a gas rapid water heater alternating current fan control system, includes fan synchronization signal circuit, singlechip circuit, silicon controlled rectifier control circuit, power supply circuit and gas rapid water heater fan, wherein the output of fan synchronization signal circuit with the input of singlechip circuit is connected, the output of singlechip circuit with the input of silicon controlled rectifier control circuit is connected, the output of silicon controlled rectifier control circuit is connected the input of fan, wherein fan synchronization signal circuit is used for detecting the zero crossing point signal on the 220V alternating current, singlechip circuit is used for receiving outside interrupt synchronization signal, calculates and control external synchronization signal silicon controlled rectifier control circuit carries out the action, silicon controlled rectifier control circuit is used for controlling the execution action of fan, power supply circuit provides operating voltage to each circuit.
As a further technical scheme of the invention, the power supply circuit is based on an MP2307/SOP8 chip, and the output direct current voltage is +5V and +12V.
As a further technical scheme of the invention, the singlechip circuit is based on an STM32F103C8T6 chip.
As a further technical scheme of the invention, the input end of the controllable silicon control circuit is connected with the output end of the fan synchronous signal circuit, the output end of the fan synchronous signal circuit is connected with the collector of the transistor V2, the collector of the transistor V2 is also connected with a +5V power supply through a resistor R12 and is grounded through a resistor R11, the emitter of the transistor V2 is grounded, the base of the transistor V2 is connected with the emitter of the photoelectric coupler D1 through a resistor R13, a resistor R14 is connected in series between the resistor R13 and the emitter of the transistor V2, a capacitor C6 is connected in parallel with the resistor R14, the collector of the photoelectric coupler D1 is connected with a +5V power supply, the anode of the photoelectric coupler D1 is connected with 220V alternating current live wire through a series resistor R3, a resistor R6, a resistor R8, a resistor R9, a resistor R7 and a resistor R4, the cathode of the photoelectric coupler D1 is connected with a 220V alternating current zero line through a diode V1, wherein the cathode of the photoelectric coupler D1 is connected with the anode of the diode V1, the cathode of the diode V1 is connected with the 220V alternating current zero line, the cathode of the diode V1 is also connected with one end of the fan through a resistor R17 and a capacitor C11 connected in series with the resistor R17, the other end of the fan is connected with a 220V alternating current live wire, a bidirectional thyristor V3 is connected in parallel with the resistor R17 and the capacitor C11, the control electrode of the bidirectional thyristor V3 is connected with the fourth pin of a first output loop of the thyristor output type optocoupler D3, the sixth pin of a second output loop of the thyristor output type optocoupler D3 is connected with the cathode of the capacitor C11 through a resistor R16, the first pin of the thyristor output type optocoupler D3 is connected with a +5V power supply, and a second pin of the silicon controlled rectifier output type optocoupler D3 is connected with a motor access end through a resistor R18.
As a further technical scheme of the invention, the photo coupler D1 is a PC817 linear photo coupler, the diode V1 is a patch diode FR107W, the type of the triac silicon V3 is MAC4DCNT4, and the type of the triac output photo coupler D3 is MOC3022.
Has the positive beneficial effects that:
the invention adopts the fan synchronous signal circuit, the singlechip circuit, the power supply circuit and the silicon controlled rectifier control circuit to realize the control of all fans of the gas rapid water heater, can randomly adjust and control the speeds of the fans according to the needs of users, overcomes the technical defect that the speeds of a plurality of fans cannot be simultaneously adjusted due to the control of the relay in the prior art, greatly facilitates the needs of the users on the fan control, and ensures that the gas rapid water heater better serves human beings.
Drawings
FIG. 1 is a block diagram of a system architecture of the present invention;
FIG. 2 is a power circuit diagram of the present invention;
FIG. 3 is a schematic diagram of a microprocessor circuit according to the present invention;
fig. 4 is a circuit diagram of a thyristor control circuit according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
As shown in FIG. 1, the alternating current fan control system of the gas rapid water heater comprises a fan synchronization signal circuit, a singlechip circuit, a silicon controlled rectifier control circuit, a power supply circuit and a gas rapid water heater fan, wherein the output end of the fan synchronization signal circuit is connected with the input end of the singlechip circuit, the output end of the singlechip circuit is connected with the input end of the silicon controlled rectifier control circuit, the output end of the silicon controlled rectifier control circuit is connected with the input end of the fan, the fan synchronization signal circuit is used for detecting a zero crossing point signal on 220V alternating current, the singlechip circuit is used for receiving an external interrupt synchronization signal, calculating the external synchronization signal and controlling the silicon controlled rectifier control circuit to execute actions, and the silicon controlled rectifier control circuit is used for controlling the execution actions of the fan and providing working voltage for each circuit.
In a specific embodiment, the power supply circuit is based on an MP2307/SOP8 chip, and the output direct current voltage is +5V and +12V.
In a specific embodiment, the singlechip circuit is based on an STM32F103C8T6 chip.
In a specific embodiment, the input end of the thyristor control circuit is connected with the output end of the fan synchronization signal circuit, the output end of the fan synchronization signal circuit is connected with the collector of the transistor V2, the collector of the transistor V2 is also connected with a +5V power supply through a resistor R12 and is grounded through a resistor R11, the emitter of the transistor V2 is grounded, the base of the transistor V2 is connected with the emitter of the photoelectric coupler D1 through a resistor R13, a resistor R14 is connected in series between the resistor R13 and the emitter of the transistor V2, a capacitor C6 is connected in parallel with the resistor R14, the collector of the photoelectric coupler D1 is connected with a +5V power supply, the anode of the photoelectric coupler D1 is connected with 220V alternating current live wire through a series resistor R3, a resistor R6, a resistor R8, a resistor R9, a resistor R7 and a resistor R4, the cathode of the photoelectric coupler D1 is connected with a 220V alternating current zero line through a diode V1, wherein the cathode of the photoelectric coupler D1 is connected with the anode of the diode V1, the cathode of the diode V1 is connected with the 220V alternating current zero line, the cathode of the diode V1 is also connected with one end of the fan through a resistor R17 and a capacitor C11 connected in series with the resistor R17, the other end of the fan is connected with a 220V alternating current live wire, a bidirectional thyristor V3 is connected in parallel with the resistor R17 and the capacitor C11, the control electrode of the bidirectional thyristor V3 is connected with the fourth pin of a first output loop of the thyristor output type optocoupler D3, the sixth pin of a second output loop of the thyristor output type optocoupler D3 is connected with the cathode of the capacitor C11 through a resistor R16, the first pin of the thyristor output type optocoupler D3 is connected with a +5V power supply, and a second pin of the silicon controlled rectifier output type optocoupler D3 is connected with a motor access end through a resistor R18.
In a specific embodiment, the photo coupler D1 is a PC817 linear optocoupler, the diode V1 is a patch diode FR107W, the type of the triac silicon V3 is MAC4DCNT4, and the type of the triac output type optocoupler D3 is MOC3022. Typically, the PC817 photocoupler functions not only as feedback, but also as isolation. PC817 is a commonly used linear optical coupler, is widely used for signal transmission between circuits such as a computer terminal, a silicon controlled rectifier system device, a measuring instrument, a photocopier, an automatic ticket vending machine, a household appliance, a fan, a heater and the like, is often used as a coupling device in various functional circuits requiring relatively precision, has the function of completely isolating upper and lower circuits, and does not influence each other. The front end is completely isolated from the load, so as to increase the safety, reduce the circuit interference and simplify the circuit design
When the LED side has enough excitation, the output end of the silicon controlled rectifier output type optocoupler D3 with the model MOC3022 is triggered to be conducted and self-locked, the LED side is still kept on even if the excitation is removed, the current is not turned off until the current passes through zero, voltage is applied between T1 and T2 of the silicon controlled rectifier, and the silicon controlled rectifier output type optocoupler D3 is kept in a conducting state. Therefore, the thyristor output type optocoupler D3 with the model MOC3022 can only be used for controlling the load of the alternating current, and once the current is triggered in half a cycle of the alternating current, the current is turned off when the alternating current is commutated to zero.
In the above embodiment, the fan synchronization signal circuit is mainly responsible for detecting the zero crossing point on the 220V ac, the frequency of the 220V ac is 50Hz, and there are two zero crossing points in one period, so that the frequency of the synchronization signal is 100Hz. The circuit high on the 220V ac is a synchronous signal, such as waveform signal S3 in fig. 1, and in a specific embodiment, the pulse width is typically 0.5ms, which cannot be too large or too small. The singlechip circuit controls the bidirectional thyristor V3 through the fan synchronous signal circuit, and when the singlechip circuit receives the fan synchronous signal, the bidirectional thyristor V3 is started in a timing delay mode according to the fan rotating speed requirement. The bidirectional thyristor V3 can realize the non-contact control of alternating current in a circuit, controls large current with small current, and has the advantages of no spark, fast action, long service life, high reliability, simplified circuit structure and the like. The triac V3 is turned on immediately after the delay, i.e. the control signal S1 shown in fig. 1, the triac V3 cannot be turned off immediately after the turn-on, and at the same time the triac V3 cannot be turned off too early, the triac V3 may not be triggered yet, and if too late, the triac V3 may not be turned off, and thus is turned off when the delay is about 2ms from the next zero point, thus completing one cycle control, and the next cycle is controlled by the same method. As shown in the waveform signal S2 in fig. 1, the thyristor control circuit controls the waveform signal of the fan.
Therefore, the invention adopts the fan synchronous signal circuit, the singlechip circuit, the power supply circuit and the silicon controlled rectifier control circuit to realize the control of all fans of the gas rapid water heater, can randomly adjust and control the speeds of the fans according to the needs of users, overcomes the technical defect that the speeds of a plurality of fans cannot be simultaneously adjusted due to relay control in the prior art, greatly facilitates the needs of the users on the fan control, and ensures that the gas rapid water heater better serves people.
While specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that these specific embodiments are by way of example only, and that various omissions, substitutions, and changes in the form and details of the methods and systems described above may be made by those skilled in the art without departing from the spirit and scope of the invention. For example, it is within the scope of the present invention to combine the above-described method steps to perform substantially the same function in substantially the same way to achieve substantially the same result. Accordingly, the scope of the invention is limited only by the following claims.
Claims (3)
1. The alternating current fan control system of the gas rapid water heater comprises a fan synchronous signal circuit, a single chip microcomputer circuit, a silicon controlled rectifier control circuit, a power supply circuit and a gas rapid water heater fan, and is characterized in that the output end of the fan synchronous signal circuit is connected with the input end of the single chip microcomputer circuit, the output end of the single chip microcomputer circuit is connected with the input end of the silicon controlled rectifier control circuit, the output end of the silicon controlled rectifier control circuit is connected with the input end of the fan, the fan synchronous signal circuit is used for detecting a zero crossing point signal on 220V alternating current, the single chip microcomputer circuit is used for receiving an external interrupt synchronous signal, calculating the external synchronous signal and controlling the silicon controlled rectifier control circuit to execute actions, and the silicon controlled rectifier control circuit is used for controlling the execution actions of the fan and providing working voltage for all circuits;
the input end of the controllable silicon control circuit is connected with the output end of the fan synchronous signal circuit, the output end of the fan synchronous signal circuit is connected with the collector electrode of the transistor V2, the collector of the transistor V2 is also connected with a +5V power supply through a resistor R12 and grounded through a resistor R11, the emitter of the transistor V2 is grounded, the base of the transistor V2 is connected with the emitter of the photoelectric coupler D1 through a resistor R13, a resistor R14 is connected in series between the resistor R13 and the emitter of the transistor V2, the resistor R14 is connected in parallel with a capacitor C6, the collector of the photoelectric coupler D1 is connected with a +5V power supply, the anode of the photoelectric coupler D1 is connected with a 220V alternating current live wire through a series resistor R3, a resistor R6, a resistor R8, a resistor R9, a resistor R7 and a resistor R4, the cathode of the photoelectric coupler D1 is connected with a 220V alternating current zero line through a diode V1, wherein the cathode of the photoelectric coupler D1 is connected with the anode of the diode V1, the cathode of the diode V1 is connected with a 220V alternating current zero line, the cathode of the diode V1 is also connected with one end of the fan through a resistor R17 and a capacitor C11 connected in series with the resistor R17, the other end of the fan is connected with a 220V alternating current live wire, a bidirectional thyristor V3 is connected in parallel with the resistor R17 and the capacitor C11, a control electrode of the bidirectional thyristor V3 is connected with a fourth pin of a first output loop of the thyristor output type optocoupler D3, a sixth pin of a second output loop of the silicon controlled rectifier output type optocoupler D3 is connected with the negative electrode of the capacitor C11 through a resistor R16, the first pin of the silicon controlled rectifier output type optical coupler D3 is connected with a +5V power supply, and the second pin of the silicon controlled rectifier output type optical coupler D3 is connected with a motor access end through a resistor R18;
the photoelectric coupler D1 is a PC817 linear photoelectric coupler, the diode V1 is a patch diode FR107W, the model of the bidirectional thyristor silicon V3 is MAC4DCNT4, and the model of the controllable silicon output type photoelectric coupler D3 is MOC3022.
2. The alternating current fan control system of the gas rapid water heater according to claim 1, wherein the power supply circuit is based on an MP2307/SOP8 chip, and the output direct current voltage is +5V and +12V.
3. The alternating current fan control system of the gas rapid water heater according to claim 1, wherein the single-chip microcomputer circuit is based on an STM32F103C8T6 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810002784.XA CN108005942B (en) | 2018-01-02 | 2018-01-02 | Alternating current fan control system of gas rapid water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810002784.XA CN108005942B (en) | 2018-01-02 | 2018-01-02 | Alternating current fan control system of gas rapid water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108005942A CN108005942A (en) | 2018-05-08 |
| CN108005942B true CN108005942B (en) | 2023-11-24 |
Family
ID=62050107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810002784.XA Active CN108005942B (en) | 2018-01-02 | 2018-01-02 | Alternating current fan control system of gas rapid water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108005942B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0426394A (en) * | 1990-05-21 | 1992-01-29 | Fuji Electric Co Ltd | Load current detection in power conversion device |
| CN102062810A (en) * | 2010-12-14 | 2011-05-18 | 江苏大学 | Detection circuit and method for zero crossing point of alternating current power supply |
| CN102647151A (en) * | 2012-04-24 | 2012-08-22 | 上海电力学院 | Cascade speed regulating device for current zero-crossing speed measurement for hardware detection |
| WO2013044602A1 (en) * | 2011-09-30 | 2013-04-04 | 海信科龙电器股份有限公司 | Zero-crossing signal detection circuit |
| CN103036501A (en) * | 2012-12-04 | 2013-04-10 | 中山市樱雪集团有限公司 | Upper alternating current fan speed regulating system of gas water heater |
| KR20130105255A (en) * | 2012-03-15 | 2013-09-25 | 김해영 | A boiler apparatus with the heating function for domestic water using hot water |
| CN203595750U (en) * | 2013-11-18 | 2014-05-14 | 深圳麦格米特电气股份有限公司 | Zero-cross detection circuit for alternating-current power supply of gas water heater |
| CN204228811U (en) * | 2014-11-04 | 2015-03-25 | 广东美的制冷设备有限公司 | A kind of zero cross detection circuit |
| CN106885378A (en) * | 2017-03-31 | 2017-06-23 | 广东万和新电气股份有限公司 | Gas heater wind resistance pressure control system |
| CN207762000U (en) * | 2018-01-02 | 2018-08-24 | 成都前锋电子有限责任公司 | A kind of gas instantaneous water heater AC blower fan control system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9291169B2 (en) * | 2013-12-11 | 2016-03-22 | Asia Vital Components Co., Ltd. | Fan motor control device |
| CN104467364B (en) * | 2014-12-15 | 2017-03-01 | 矽力杰半导体技术(杭州)有限公司 | A kind of zero cross detection circuit and Switching Power Supply |
-
2018
- 2018-01-02 CN CN201810002784.XA patent/CN108005942B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0426394A (en) * | 1990-05-21 | 1992-01-29 | Fuji Electric Co Ltd | Load current detection in power conversion device |
| CN102062810A (en) * | 2010-12-14 | 2011-05-18 | 江苏大学 | Detection circuit and method for zero crossing point of alternating current power supply |
| WO2013044602A1 (en) * | 2011-09-30 | 2013-04-04 | 海信科龙电器股份有限公司 | Zero-crossing signal detection circuit |
| KR20130105255A (en) * | 2012-03-15 | 2013-09-25 | 김해영 | A boiler apparatus with the heating function for domestic water using hot water |
| CN102647151A (en) * | 2012-04-24 | 2012-08-22 | 上海电力学院 | Cascade speed regulating device for current zero-crossing speed measurement for hardware detection |
| CN103036501A (en) * | 2012-12-04 | 2013-04-10 | 中山市樱雪集团有限公司 | Upper alternating current fan speed regulating system of gas water heater |
| CN203595750U (en) * | 2013-11-18 | 2014-05-14 | 深圳麦格米特电气股份有限公司 | Zero-cross detection circuit for alternating-current power supply of gas water heater |
| CN204228811U (en) * | 2014-11-04 | 2015-03-25 | 广东美的制冷设备有限公司 | A kind of zero cross detection circuit |
| CN106885378A (en) * | 2017-03-31 | 2017-06-23 | 广东万和新电气股份有限公司 | Gas heater wind resistance pressure control system |
| CN207762000U (en) * | 2018-01-02 | 2018-08-24 | 成都前锋电子有限责任公司 | A kind of gas instantaneous water heater AC blower fan control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108005942A (en) | 2018-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103871784B (en) | relay mutation impact protection system and method thereof | |
| CN105679606B (en) | A kind of wireless zero passage on-off switch and control method based on electromagnetic relay | |
| CN109392207B (en) | Electromagnetic heating circuit, electromagnetic heating appliance and zero-crossing detection method | |
| CN202794915U (en) | Isolation-type zero standby power consumption circuit | |
| CN108005942B (en) | Alternating current fan control system of gas rapid water heater | |
| CN207117520U (en) | A kind of electricity-saving control cabinet of motor | |
| CN110416009B (en) | Arc-free long-life relay switch circuit and controller | |
| CN203984280U (en) | Mutual-inductance contactless electric current starter for commercial refrigeration compressor electric motor | |
| CN104135793A (en) | Circuit using power switch to adjust electrical parameters | |
| CN104113235A (en) | Mutual-inductance non-contact current starter for commercial refrigeration compressor motor | |
| CN104104278A (en) | Mutual inductance type non-contact current starter used for commercial refrigeration compressor motor | |
| CN203984278U (en) | Commercial refrigeration compressor electric motor mutual-inductance contactless electric current starter | |
| CN207762000U (en) | A kind of gas instantaneous water heater AC blower fan control system | |
| CN201623677U (en) | Control circuit of single-phase alternating-current motor for clothes dryers | |
| CN204068775U (en) | The mutual-inductance contactless current starter of commercial refrigeration compressor electric motor | |
| CN109267291A (en) | The method and washing machine water amount control system of ultrasonic sensor detection liquid level | |
| CN104237616B (en) | Electric moter voltage current zero-crossing point detects circuit | |
| CN111786597A (en) | Speed regulating method for AC single-phase motor | |
| CN202758190U (en) | Non-isolated standby zero power consumption circuit | |
| CN203984279U (en) | Mutual-inductance contactless electric current starter for a kind of commercial refrigeration compressor electric motor | |
| CN203984277U (en) | The mutual-inductance contactless electric current starter that a kind of commercial refrigeration compressor electric motor is used | |
| CN218041360U (en) | Silicon controlled zero-crossing control device of non-isolated power supply | |
| CN204068779U (en) | The novel mutual-inductance contactless current starter of commercial refrigeration compressor electric motor | |
| CN204068776U (en) | A kind of commercial refrigeration compressor electric motor mutual-inductance contactless current starter | |
| CN204068777U (en) | The novel mutual-inductance contactless current starter of a kind of commercial refrigeration compressor electric motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |