CN203980562U - The off-premises station charging control circuit of transducer air conditioning - Google Patents
The off-premises station charging control circuit of transducer air conditioning Download PDFInfo
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Abstract
The utility model discloses a kind of off-premises station charging control circuit of transducer air conditioning, comprise relay R Y2, phase inverter U4, current-limiting resistance PTC, diode D5～diode D8, electrochemical capacitor EC3 and electrochemical capacitor EC4; The input of phase inverter U4 connects external control signal input port, and the output of phase inverter U4 is connected with relay R Y2, and relay R Y2 is also connected with the live wire ACL of+12V power supply, alternating voltage.The two ends of current-limiting resistance PTC are all connected with relay R Y2.The negative pole of the positive pole of diode D6 and diode D8 is all connected with the zero line ACN of AC power.The off-premises station charging control circuit of a kind of transducer air conditioning of the present utility model, have can air-conditioning when the situation of normal prominent chance power-off in service be off-premises station filter capacitor charging, improve the advantage such as job stability of air-conditioner.
Description
Technical field
The utility model relates to a kind of off-premises station charging control circuit of transducer air conditioning.
Background technology
Existing convertible frequency air-conditioner, because of its power saving, the advantage such as comfortable, is more and more subject to consumer's favor.Existing transducer air conditioning, need to ensure by telecommunication circuit the normal operation of indoor set and off-premises station.Telecommunication circuit is passed through photo-coupler, the signal that indoor set/off-premises station processor is assigned carries out opto-electronic conversion, then carries out electric signal transmission by holding wire, then passes through photo-coupler, the signal of telecommunication is carried out to opto-electronic conversion, and off-premises station/indoor set processor receives signal and processes.But either party damages indoor, outdoor, middle connecting line tripartite, all will cause air-conditioning cisco unity malfunction.
No matter, from the angle of operation logic or its implementation structure of convertible frequency air-conditioner, convertible frequency air-conditioner is all complicated more many than common fixed frequency air conditioner.Thereby the fault rate of convertible frequency air-conditioner, especially electric-controlled plate is relatively high, maintenance difficult.
And because the electric-controlled plate specificity of convertible frequency air-conditioner is strong, price is relatively high, network of maintenance and repair can not have various model electric-controlled plates, thereby causes breaking down and solving fault completely from convertible frequency air-conditioner electric-controlled plate, often 15 days to one month consuming time.Greatly affect user's use.
Air-conditioning products is the consumer goods that a kind of seasonality is very strong, when non-use season, be difficult to find fault, use season, after breaking down, user often wants to fix immediately, recover to use, but due to aforesaid reason, this requirement of user often cannot meet, cause that user complains, damaged product public praise.
How to improve reliability, lifting user's recognition rate and the comfortableness of variable frequency air-conditioner controller? how to ensure user the hottest and the coldest in can normally use convertible frequency air-conditioner? these problems are perplexing technical staff in the industry always, make the behaviour in service of transducer air conditioning not fully up to expectations.
Utility model content
The utility model is the weak point existing in above-mentioned prior art for avoiding, a kind of off-premises station charging control circuit of transducer air conditioning is provided, during taking the situation of the normal prominent chance power-off in service of air-conditioning as the filter capacitor charging of off-premises station, improve the job stability of air-conditioner.
The utility model be technical solution problem by the following technical solutions.
The off-premises station charging control circuit of transducer air conditioning, its design feature is that described off-premises station charging control circuit comprises relay R Y2, phase inverter U4, current-limiting resistance PTC, diode D5～diode D8, electrochemical capacitor EC3 and electrochemical capacitor EC4; The input of described phase inverter U4 connects external control signal input port, the output of described phase inverter U4 is connected with relay R Y2, described relay R Y2 is also connected with the live wire ACL of+12V power supply, alternating voltage, the first end of described current-limiting resistance PTC is connected with the link of the live wire ACL of relay R Y2 and alternating voltage, and the second end ACL1 of described current-limiting resistance PTC is also connected on another terminal of relay; The negative pole of the positive pole of described diode D5 and diode D7 is all connected with the second end ACL1 of described current-limiting resistance PTC, and the negative pole of the positive pole of described diode D6 and diode D8 is all connected with the zero line ACN of AC power; After being connected with the negative pole of diode D5, the negative pole of described diode D6 is connected with the positive pole of electrochemical capacitor EC3, after the positive pole of described diode D7 is connected with the positive pole of diode D8, be connected with the negative pole of electrochemical capacitor EC3, the negative pole of described electrochemical capacitor EC3 connects earth terminal simultaneously; The positive pole of described electrochemical capacitor EC4 is connected with the positive pole of electrochemical capacitor EC3, and the negative pole of described electrochemical capacitor EC4 is connected with the negative pole of electrochemical capacitor EC3.
Compared with the prior art, the utility model beneficial effect is embodied in:
The off-premises station charging control circuit of transducer air conditioning of the present utility model, described off-premises station charging control circuit comprises relay R Y2, phase inverter U4, current-limiting resistance PTC, diode D5～diode D8, electrochemical capacitor EC3 and electrochemical capacitor EC4.
Normally in service when air-conditioning, when prominent situation of meeting power-off, due to the characteristic of capacitance energy storage, the supply voltage of central processing unit U3 can keep just can disappearing for tens seconds.When central processing unit U3 detects after off-premises station power down according to aforementioned off-premises station power-fail detection circuit; also output low level immediately; block system relay RY2 contact; prevent after power-off because the electric capacity on smothing filtering electric capacity EC3, EC4 can maintain a period of time; central processing unit U3 still has electricity, and closed relay R Y2 contact does not disconnect in the course of the work, if power on immediately; there is no the protection of current-limiting resistance PTC, the large electric current bringing causes the damage to circuit.
Air-conditioner working stability of the present utility model is reliable, the widening of the produce market that is highly advantageous to.The system architecture that the utility model does not change existing transducer air conditioning, can realize by the suitable adjustment of control circuit, easy to implement.
The off-premises station charging control circuit of a kind of transducer air conditioning of the present utility model, have can air-conditioning when the situation of normal prominent chance power-off in service be off-premises station filter capacitor charging, improve the advantage such as job stability of air-conditioner.
Brief description of the drawings
Fig. 1 is the refrigeration system schematic diagram that is provided with the transducer air conditioning of off-premises station charging control circuit of the present utility model.
Fig. 2 is the outdoor power supply control circuit theory figure that is provided with the transducer air conditioning of off-premises station charging control circuit of the present utility model.
Fig. 3 is the indoor coil sensor temperature Acquisition Circuit schematic diagram that is provided with the transducer air conditioning of off-premises station charging control circuit of the present utility model.
Fig. 4 is rotation speed of the fan and the vs. temperature figure while being provided with the indoor set communication lost contact work of transducer air conditioning of off-premises station charging control circuit of the present utility model.
Fig. 5 is the off-premises station power-fail detection circuit schematic diagram that is provided with the transducer air conditioning of off-premises station charging control circuit of the present utility model.
Fig. 6 is off-premises station charging control circuit schematic diagram of the present utility model.
Fig. 7 is for being provided with outdoor environment, the coil pipe sensor temperature Acquisition Circuit schematic diagram of transducer air conditioning of off-premises station charging control circuit of the present utility model.
In accompanying drawing 1, label is: 1 compressor, 2 outdoor unit heat exchangers, 3 aerofoil fans, 4 indoor set heat exchangers, 5 first capillaries, 6 axial-flow fans, 7 cross valves, 8 electric heaters, 9 gas-liquid separators, 10 check valves, 11 first stop valves, 12 second stop valves, 13 second capillaries.
Below pass through detailed description of the invention, and the utility model is described in further detail by reference to the accompanying drawings.
Detailed description of the invention
Referring to Fig. 6, the off-premises station charging control circuit of transducer air conditioning of the present utility model, comprises relay R Y2, phase inverter U4, current-limiting resistance PTC, diode D5～diode D8, electrochemical capacitor EC3 and electrochemical capacitor EC4; The input of described phase inverter U4 connects external control signal input port, the output of described phase inverter U4 is connected with relay R Y2, described relay R Y2 is also connected with the live wire ACL of+12V power supply, alternating voltage, the first end of described current-limiting resistance PTC is connected with the link of the live wire ACL of relay R Y2 and alternating voltage, and the second end ACL1 of described current-limiting resistance PTC is also connected on another terminal of relay; The negative pole of the positive pole of described diode D5 and diode D7 is all connected with the second end ACL1 of described current-limiting resistance PTC, and the negative pole of the positive pole of described diode D6 and diode D8 is all connected with the zero line ACN of AC power; After being connected with the negative pole of diode D5, the negative pole of described diode D6 is connected with the positive pole of electrochemical capacitor EC3, after the positive pole of described diode D7 is connected with the positive pole of diode D8, be connected with the negative pole of electrochemical capacitor EC3, the negative pole of described electrochemical capacitor EC3 connects earth terminal simultaneously; The positive pole of described electrochemical capacitor EC4 is connected with the positive pole of electrochemical capacitor EC3, and the negative pole of described electrochemical capacitor EC4 is connected with the negative pole of electrochemical capacitor EC3.
As shown in Figure 6, the second end of described current-limiting resistance PTC is designated as ACL1 to off-premises station charging control circuit.Central processing unit U3 exports low and high level according to control logic, using phase inverter U4 and relay R Y2 as executive component.
While initially powering on, central processing unit U3 output low level, becomes high level after anti-phase via phase inverter U4, and the voltage difference at relay R Y2 coil two ends is eliminated, and relay R Y2 contact disconnects, and ACL supplies with ACL1 after by semistor PTC current limliting.AC-input voltage carries out full-wave rectification by diode D5-D8, give smothing filtering electric capacity EC3, EC4 charging, due to the characteristic of PTC, after a period of time, generate heat, it is large that resistance becomes, charged electrical fails to be convened for lack of a quorum more and more less, smothing filtering electric capacity EC3, EC4 is full of substantially, now, central processing unit U3 is according to controlling requirement, output high level, after anti-phase via phase inverter U4, become low level, jointly be applied to the two ends of relay R Y2 coil with 12V voltage, the adhesive of relay R Y2 contact, power supply ACL is directly communicated with ACL1, prevent the large electric current at the initial stage of charging, the sparking causing, flashover, damage smothing filtering electric capacity EC3, EC4, prevent from damaging aforesaid outdoor supply relay RY1.Normally in service when air-conditioning, when prominent situation of meeting power-off, due to the characteristic of capacitance energy storage, the supply voltage of central processing unit U3 can keep just can disappearing for tens seconds.When central processing unit U3 detects after off-premises station power down according to aforementioned off-premises station power-fail detection circuit; also output low level immediately; block system relay RY2 contact; prevent after power-off because the electric capacity on smothing filtering electric capacity EC3, EC4 can maintain a period of time; central processing unit U3 still has electricity, and closed relay R Y2 contact does not disconnect in the course of the work, if power on immediately; there is no the protection of current-limiting resistance PTC, the large electric current bringing causes the damage to circuit.Fig. 5 and Fig. 6 have formed complete off-premises station detection of power loss and charging control circuit.
The control circuit of the transducer air conditioning of off-premises station charging control circuit of the present utility model is set, except comprising above-mentioned off-premises station charging control circuit, also can comprises outdoor power supply control loop, off-premises station power-fail detection circuit and temperature collection circuit; Described outdoor power supply control loop, for coming connection and the cut-out of electromechanical source outside control room according to external control signal; Described off-premises station power-fail detection circuit, for detection of the whether power down of the power supply circuits of off-premises station; Described temperature collection circuit, for gathering coil temperature, outdoor environment temperature and the indoor set heat exchanger coil temperature of outdoor unit heat exchanger, and by the analog signal output gathering.
Described outdoor power supply control loop comprises relay R Y1 and phase inverter U2; The L terminal of described relay R Y1 connects external power source, and the OUT_L terminal of described relay R Y1 connects off-premises station; Described relay is also connected with+12V power supply with the output of described phase inverter, the input termination external control signal input port of described phase inverter.If Fig. 2 is the circuit diagram in outdoor power supply control loop, described phase inverter is connected with the central processing unit U1 of indoor set control circuit board.By central processing unit, U1 exports low and high level according to control logic, using phase inverter U2 and relay R Y1 as executive component.Central processing unit U1 is according to controlling requirement, and output high level, becomes low level after anti-phase via phase inverter U2, is jointly applied to the two ends of relay R Y1 coil with+12V voltage, the adhesive of relay R Y1 contact, and power supply L exports OUT_L to, and off-premises station obtains electric; When central processing unit U1 output low level, become high level after anti-phase via phase inverter U2, the voltage difference at relay R Y1 coil two ends is eliminated, and relay R Y1 contact disconnects, and outdoor power path is cut off, and whether off-premises station power-off powers to off-premises station thereby control.
Described off-premises station power-fail detection circuit comprises diode D1～diode D3, resistance R 2～resistance R 4 and electrochemical capacitor EC2; The positive pole of described diode D1 is connected with the live wire ACL of AC power, the positive pole of described diode D2 is connected with the zero line ACN of AC power, after the negative pole of described diode D1 is connected with the negative pole of described diode D2, be connected with one end of resistance R 2, the other end of described resistance R 2 is by resistance R 3 ground connection; The negative pole of described diode D3 is connected with+5V power supply, and the positive pole of described diode D3 is connected to after being connected with one end of described resistance R 4 between described resistance R 2 and resistance R 3, and the other end of described resistance R 4 connects signal output; The positive pole of described electrochemical capacitor EC2 is connected with the positive pole of described diode D3, the earth terminal of the negative pole contact resistance R3 of described electrochemical capacitor EC2.
As shown in Figure 5, the other end of described resistance R 4 connects the central processing unit U3 of off-premises station control circuit board to off-premises station power-fail detection circuit, and voltage signal is exported to central processing unit U3.The positive-negative half-cycle difference rectification to outdoor AC-input voltage by diode D1 and D2, through resistance R 2 and R3 dividing potential drop, electrochemical capacitor EC2 smothing filtering, after resistance R 4 current limlitings, be input to the AD mouth of central processing unit U3, diode D3 is set for clamper, prevent that input voltage is too high, damage central processing unit U3, the analog signal collecting is converted into data-signal by central processing unit U3, as the whether basis for estimation of power down of off-premises station power supply circuits.
Described temperature collection circuit comprises indoor coil pipe Acquisition Circuit, outdoor environment and coil temperature Acquisition Circuit; Described indoor coil pipe Acquisition Circuit comprises NTC thermistor RT1, divider resistance R1 and filter capacitor EC1; One end connection+5V power supply of described thermistor RT1, the other end of described thermistor RT1 connects central processing unit U1; One end that described divider resistance R1 and filter capacitor EC1 are in parallel after connecting is connected between described thermistor RT1 and central processing unit U1, the other end ground connection that described divider resistance R1 is in parallel after being connected with filter capacitor EC1;
Described outdoor environment and coil temperature Acquisition Circuit comprise divider resistance R5, divider resistance R6, filter capacitor EC5, filter capacitor EC6, NTC thermistor RT2, NTC thermistor RT3; One end connection+5V power supply of described thermistor RT2, the other end of described thermistor RT2 connects central processing unit U3; One end that described divider resistance R5 and filter capacitor EC5 are in parallel after connecting is connected between described thermistor RT2 and central processing unit U3, the other end ground connection that described divider resistance R5 is in parallel after being connected with filter capacitor EC5;
One end connection+5V power supply of described thermistor RT3, the other end of described thermistor RT3 connects central processing unit U3; One end that described divider resistance R6 and filter capacitor EC6 are in parallel after connecting is connected between described thermistor RT3 and central processing unit U3, the other end ground connection that described divider resistance R6 is in parallel after being connected with filter capacitor EC6.
Fig. 3 is indoor coil pipe Acquisition Circuit, and the coil temperature sensor RT1 of indoor machine evaporation is set, the changeover control signal using the temperature detection signal of described coil temperature sensor RT1 as outdoor motor different rotating speeds shelves.Shown in Fig. 3, by coil temperature sensor is set on indoor set heat exchanger, 5V voltage is by NTC thermistor and R1 dividing potential drop, EC1 shaping, voltage stabilizing, the variation of NTC thermistor RT1 resistance is converted to voltage change, and output dc voltage signal is to the AD mouth of central processing unit U1.The AD conversion of central processing unit U1 by this voltage, gather the variation of perception indoor heat exchanger temperature, as one of control parameter of whole air-conditioner.In indoor and outdoor communication lost contact, in air-conditioning heating situation, in the time that heat exchange temperature changes, according to the temperature of Fig. 4--rotating speed transformational relation figure, controls the rotating speed of indoor motor, thereby realizes many rotating speeds control of indoor motor.In the time of temperature rise, while being less than or equal to Temp1, indoor fan rotating speed is FI0, while being greater than Temp1, the highest FI1 that is no more than of indoor fan rotating speed, while being greater than Temp2, the highest FI2 that is no more than of indoor fan rotating speed, while being greater than Temp3, indoor fan rotating speed is set work by user; In the time that temperature declines, while being greater than Temp2, indoor fan rotating speed is set work by user, while being greater than Temp1, the highest FI2 that is no more than of indoor fan rotating speed, while being greater than Temp0, the highest FI1 that is no more than of indoor fan rotating speed, while being less than or equal to Temp0, indoor fan rotating speed is FI0.
In concrete enforcement, more gear outdoor motor rotating speed can also be set again, according to variations in temperature, in the time that coil temperature is low, reduce rotating speed, even turn off indoor fan, prevent under the heating mode of indoor and outdoor lost contact situation, cold wind when off-premises station defrosting blows out, and causes the discomfort of human body.When coil temperature rises, promote rotating speed, reach the object that promotes heating capacity.
Shown in Fig. 7, by coil temperature sensor on environment and heat exchanger is set at off-premises station, 5V voltage is by NTC thermistor RT2 and R5 dividing potential drop, EC5 shaping, voltage stabilizing; RT3 and R6 dividing potential drop, EC6 shaping, voltage stabilizing, be converted to voltage change by the variation of NTC thermistor RT2, RT3 resistance, and output dc voltage signal is to the AD mouth of U3.The AD conversion of CPU by this voltage, gather the variation of perception outdoor environment, heat exchanger coils temperature, thus as under lost contact pattern, the heating and defrosting of off-premises station enter judgment basis.Outdoor environment temperature sensor RT2 is set, the pattern changeover control signal of communicating by letter after lost contact as indoor and outdoor using the temperature detection signal of described outdoor environment temperature sensor RT2.The coil temperature sensor RT3 of outdoor unit heat exchanger is set, the defrosting control signal using the difference of the temperature detection signal of described coil temperature sensor RT3 and the temperature detection signal of outdoor environment temperature sensor RT2 as off-premises station.
The off-premises station charging control circuit of transducer air conditioning of the present utility model, also be provided with plug type mnemonic EEPROM, at indoor electric-controlled plate with outdoor 2-3 described pluggable EEPROM be set on automatically controlled, in storage chamber, system control parameters, outdoor system control parameter and outdoor press drive parameter respectively.Control parameter relevant outdoor system is placed in off-premises station EEPROM, and after energising, indoor set reads the system control parameters of off-premises station.Adopting is because the different corresponding systematic parameter differences of off-premises station, compressor is placed on this part parameter in outdoor EEPROM in this way, can improve greatly the versatility of indoor control panel.
As Fig. 1, transducer air conditioning comprises that indoor set, off-premises station, refrigeration system and corresponding control circuit form; , described indoor set comprises indoor set heat exchanger 4, electric heater 8 and axial-flow fan 6; One end of described indoor set heat exchanger 4 is connected with the first stop valve 11, and the other end of described indoor set heat exchanger 4 is connected with the second stop valve 12; Described off-premises station comprises outdoor unit heat exchanger 2, compressor 1, aerofoil fan 3, the first capillary 5, cross valve 7, gas-liquid separator 9 and check valve 10.
Low pressure, low-temperature refrigerant steam in refrigeration system are sucked by compressor 1, after the compressed superheated steam for high pressure, high temperature, drain into outdoor unit heat exchanger 2; The outdoor air that simultaneously outdoor side axial 3 the sucks outdoor unit heat exchanger 2 of flowing through, takes away cold-producing medium liberated heat, makes the refrigerant vapour of high pressure, high temperature be condensed into highly pressurised liquid.Through throttle capillary tube, 5 step-down coolings flow into indoor set heat exchanger 4 to highly pressurised liquid, and evaporate under corresponding low pressure, draw ambient heat; Simultaneously indoor fan 6 constantly enters between the fin of indoor set heat exchanger 4 room air to carry out heat exchange, and the gas turning cold after heat release is sent to indoor.So, indoor-outdoor air constantly circulates, and reaches the object that reduces temperature.While heating, utilize the compression condensation heat of refrigeration system to heat room air, low pressure, low-temperature refrigerant liquid evaporation endothermic in evaporimeter, and the heat release condensation in condenser of high-temperature high-pressure refrigerant gas.When heating, heat pump changes the loop direction of cold-producing medium by cross valve 7, while making original refrigeration work, become the condenser while heating as the indoor set heat exchanger of evaporimeter, originally become the evaporimeter while heating as the outdoor unit heat exchanger of condenser when refrigeration work, refrigeration system is in outdoor heat absorption like this, indoor heat release, realizes the object heating.
Described compressor 1 is connected with the first port of described cross valve 7, the second port of described cross valve 7 is connected with described the first stop valve 11, the 3rd port of described cross valve 7 is connected with described gas-liquid separator 9, the 4th port of described cross valve 7 is connected with one end of described outdoor unit heat exchanger 2, the other end of described outdoor unit heat exchanger 2 is connected with one end of described the first capillary 5, the other end of described the first capillary 5 is connected with one end of described check valve 10, and the other end of described check valve 10 is connected with described the second stop valve 12; One side of described outdoor unit heat exchanger 2 is provided with aerofoil fan 3; The motor of the motor of described axial-flow fan 6 and described aerofoil fan 3 is brshless DC motor; The motor of axial-flow fan 6 of described indoor set and the motor of the aerofoil fan of described off-premises station 3 are respectively by two control panel controls.
Described off-premises station also comprises the second capillary 13; Described check valve 10 is in parallel and is connected with the second capillary 13.
If Fig. 1 is the transducer air conditioning that is provided with control circuit of the present utility model, formed by indoor set, off-premises station, refrigeration system and corresponding control circuit.When refrigeration, low pressure, low-temperature refrigerant steam in refrigeration system are sucked by compressor 1, after the compressed superheated steam for high pressure, high temperature, drain into outdoor unit heat exchanger 2; The outdoor air that simultaneously outside fan 3 the sucks outdoor unit heat exchanger 2 of flowing through, takes away cold-producing medium liberated heat, makes the refrigerant vapour of high pressure, high temperature be condensed into highly pressurised liquid.Highly pressurised liquid flows into indoor set heat exchanger 4 through the first capillary 5 step-down coolings, and evaporates under corresponding low pressure, draws ambient heat; Simultaneously indoor fan 6 constantly enters between the fin of indoor set heat exchanger 4 room air to carry out heat exchange, and the gas turning cold after heat release is sent to indoor.So, indoor-outdoor air constantly circulates, and reaches the object that reduces temperature.While heating, utilize the compression condensation heat of refrigeration system to heat room air, low pressure, low-temperature refrigerant liquid evaporation endothermic in evaporimeter, and the heat release condensation in condenser of high-temperature high-pressure refrigerant gas.When heating, heat pump changes the loop direction of cold-producing medium by cross valve 7, while making original refrigeration work, become the condenser while heating as the indoor set heat exchanger of evaporimeter, originally become the evaporimeter while heating as the outdoor unit heat exchanger of condenser when refrigeration work, refrigeration system is in outdoor heat absorption like this, indoor heat release, realizes the object heating.Electric heater 8 is for as assisted heating device.
Indoor, outdoor fan all adopts DC brushless motor, respectively by two control panel controls, by closed-loop control, makes the stable and influence by voltage not of motor speed control, and noise is little; High temperature heats, under low-temperature heating operating mode, the heating effect of air-conditioner is better.Outdoor motor adopts independent control circuit, and the fixed rotating speed of outdoor motor and adjustable rotating speed can arbitrarily be switched, again can be in the time that closed loop rotation speed control loop damage, and outdoor fan continues normal work.
As mentioned above; accompanying drawings the off-premises station charging control circuit of a kind of transducer air conditioning of the utility model; but example and accompanying drawing that the utility model can not be recorded in this description limit, one of ordinary skill in the art can propose various deformation example in technological thought protection domain of the present utility model.
Claims (1)
1. the off-premises station charging control circuit of transducer air conditioning, is characterized in that, comprises relay R Y2, phase inverter U4, current-limiting resistance PTC, diode D5～diode D8, electrochemical capacitor EC3 and electrochemical capacitor EC4; The input of described phase inverter U4 connects external control signal input port, the output of described phase inverter U4 is connected with relay R Y2, described relay R Y2 is also connected with the live wire ACL of+12V power supply, alternating voltage, the first end of described current-limiting resistance PTC is connected with the link of the live wire ACL of relay R Y2 and alternating voltage, and the second end ACL1 of described current-limiting resistance PTC is also connected on another terminal of relay; The negative pole of the positive pole of described diode D5 and diode D7 is all connected with the second end ACL1 of described current-limiting resistance PTC, and the negative pole of the positive pole of described diode D6 and diode D8 is all connected with the zero line ACN of AC power; After being connected with the negative pole of diode D5, the negative pole of described diode D6 is connected with the positive pole of electrochemical capacitor EC3, after the positive pole of described diode D7 is connected with the positive pole of diode D8, be connected with the negative pole of electrochemical capacitor EC3, the negative pole of described electrochemical capacitor EC3 connects earth terminal simultaneously; The positive pole of described electrochemical capacitor EC4 is connected with the positive pole of electrochemical capacitor EC3, and the negative pole of described electrochemical capacitor EC4 is connected with the negative pole of electrochemical capacitor EC3.
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| CN201420471459.5U CN203980562U (en) | 2014-08-20 | 2014-08-20 | The off-premises station charging control circuit of transducer air conditioning |
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| CN201420471459.5U CN203980562U (en) | 2014-08-20 | 2014-08-20 | The off-premises station charging control circuit of transducer air conditioning |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488948A (en) * | 2018-06-05 | 2018-09-04 | 珠海格力电器股份有限公司 | Air-conditioning, air-conditioner control system and outdoor unit switching circuit |
| CN110173837A (en) * | 2019-05-10 | 2019-08-27 | 广东美的制冷设备有限公司 | Air conditioner and its control method and device |
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2014
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488948A (en) * | 2018-06-05 | 2018-09-04 | 珠海格力电器股份有限公司 | Air-conditioning, air-conditioner control system and outdoor unit switching circuit |
| CN108488948B (en) * | 2018-06-05 | 2023-11-14 | 珠海格力电器股份有限公司 | Air conditioner, air conditioner control system and outdoor unit switch circuit |
| CN110173837A (en) * | 2019-05-10 | 2019-08-27 | 广东美的制冷设备有限公司 | Air conditioner and its control method and device |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20141203 |