CN104154604A - Outdoor unit control circuit of variable frequency air conditioner - Google Patents
Outdoor unit control circuit of variable frequency air conditioner Download PDFInfo
- Publication number
- CN104154604A CN104154604A CN201410411929.3A CN201410411929A CN104154604A CN 104154604 A CN104154604 A CN 104154604A CN 201410411929 A CN201410411929 A CN 201410411929A CN 104154604 A CN104154604 A CN 104154604A
- Authority
- CN
- China
- Prior art keywords
- diode
- resistance
- outdoor
- premises station
- power supply
- 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.)
- Granted
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an outdoor unit control circuit of a variable frequency air conditioner. The outdoor unit control circuit of the variable frequency air conditioner comprises an outdoor power supply control loop, an outdoor unit power failure detection circuit, an outdoor unit charging control circuit and an outdoor environment and coiler temperature collecting circuit. The outdoor power supply control loop is used for controlling an outdoor unit to be powered on or powered off according to an external control signal. The outdoor unit power failure detection circuit is used for detecting whether a power failure of an outdoor unit power supply circuit is caused or not. The outdoor unit charging control circuit is used for charging a filter capacitor of the outdoor unit. The temperature collecting circuit is used for collecting the temperature of a coiler of an outdoor unit heat exchanger and the temperature of an outdoor environment and outputting collected analog signals. The outdoor unit control circuit of the variable frequency air conditioner has the advantages that an outdoor unit power failure can be detected, the outdoor unit can be controlled to be powered on or powered off, the stand-by time is shortened, energy is saved, and the work stability of the air conditioner is improved.
Description
Technical field
The present invention relates to a kind of off-premises station 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 guarantee 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 by holding wire, carries out electric signal transmission, 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 affected user's use.
Air-conditioning products is the consumer goods that a kind of seasonality is very strong, non-use is during 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.
Summary of the invention
The present invention is the weak point existing in above-mentioned prior art for avoiding, provide a kind of off-premises station control circuit of transducer air conditioning, effectively to improve the reliability of convertible frequency air-conditioner, to guarantee that user can normally use air-conditioning, improve convenience and the promptness of convertible frequency air-conditioner maintenance when needing air-conditioning to greatest extent.
The present invention be technical solution problem by the following technical solutions.
The off-premises station control circuit of transducer air conditioning, its design feature is to comprise outdoor power supply control loop, off-premises station power-fail detection circuit, off-premises station charging control circuit and outdoor environment and coil temperature Acquisition 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 off-premises station charging control circuit, is used to the filter capacitor charging of off-premises station;
Described outdoor environment and coil temperature Acquisition Circuit, for gathering coil temperature, the outdoor environment 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.
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, the negative pole of described diode D1 is connected with one end of resistance R 2 after being connected with the negative pole of described diode D2, and 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 between described resistance R 2 and resistance R 3 after being connected with one end of described resistance R 4, 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.
The design feature of the off-premises station control circuit of transducer air conditioning of the present invention is also:
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, the negative pole of the negative pole of described diode D6 and diode D5 is connected with the positive pole of electrochemical capacitor EC3, after the positive pole of the positive pole of described diode D7 and diode D8 is connected, 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.
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.
Compared with the prior art, beneficial effect of the present invention is embodied in:
The off-premises station control circuit of transducer air conditioning of the present invention, comprises outdoor power supply control loop, off-premises station power-fail detection circuit, off-premises station charging control circuit and temperature collection circuit, has following technical characterstic.
1, the present invention, owing to being provided with outdoor power supply control loop, greatly reduces the stand-by power consumption of convertible frequency air-conditioner, has saved the energy;
2, the present invention is due to being provided with outdoor power supply control loop, make air-conditioning can be operated in normal work, tape jam work, 3 kinds of mode of operations of communication lost contact work become possibility, and the control mode of 3 kinds of mode of operations has extended the operable time of air-conditioner greatly, once having solved common air-conditioning goes wrong, the drawback that just cannot work, improved greatly client's satisfaction rate, in emergency situation, even can adopt fixed-frequency control plate to replace the indoor plate of convertible frequency air-conditioner to use, also can replace fixed electric-controlled plate frequently for fixed frequency air conditioner by frequency conversion room inner panel, improved the versatility of electric-controlled plate, not only can improve convertible frequency air-conditioner user's satisfaction rate, also can improve fixed frequency air conditioner user's satisfaction rate, public praise that can fast lifting brand.
3, the present invention is owing to having adopted indoor set while powering on to read the mode of the EEPROM parameter relevant to outdoor configuration from off-premises station, can be so that indoor electric control plate can match with any outdoor electric-controlled plate, form perfect closed-loop control, make outdoor unit modules, solved the predicament of the corresponding a kind of new electric-controlled plate of system requirements of common transducer air conditioning, applicability and the composability of the control circuit of this invention are strengthened greatly, greatly shortened product development cycle.
4, the present invention is owing to being provided with off-premises station power-fail detection circuit, outdoor PTC control circuit, once the present invention disconnects by outdoor supply relay, the function setting that needs just can again open for interval M minute, solved the outdoor power-supplying circuit of common convertible frequency air-conditioner simple, the flimsy disadvantage of electric-controlled plate.
5, air-conditioner working stability of the present invention is reliable, the widening of the produce market that is highly advantageous to.
6, the present invention does not change the system architecture of existing transducer air conditioning, and the suitable adjustment by control circuit can realize, easy to implement.
The off-premises station control circuit of transducer air conditioning of the present invention, have can off-premises station power down detect and control off-premises station power supply break-make, reduce the advantages such as job stability that stand-by time is saved the energy, improved air-conditioner.
Accompanying drawing explanation
Fig. 1 is the refrigeration system schematic diagram that the transducer air conditioning of off-premises station control circuit of the present invention is set.
Fig. 2 is outdoor power supply control circuit theory figure of the present invention.
Fig. 3 is indoor coil sensor temperature Acquisition Circuit schematic diagram of the present invention.
Rotation speed of the fan and vs. temperature figure when Fig. 4 is indoor set communication lost contact work of the present invention.
Fig. 5 is off-premises station power-fail detection circuit schematic diagram of the present invention.
Fig. 6 is off-premises station charging control circuit schematic diagram of the present invention.
Fig. 7 is outdoor environment of the present invention, coil pipe sensor temperature Acquisition Circuit schematic diagram.
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 the specific embodiment, and the invention will be further described by reference to the accompanying drawings.
The specific embodiment
Referring to Fig. 1-7, the off-premises station control circuit of transducer air conditioning of the present invention, comprises outdoor power supply control loop, off-premises station power-fail detection circuit, off-premises station charging control circuit and outdoor environment and coil temperature Acquisition 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 off-premises station charging control circuit, is used to the filter capacitor charging of off-premises station;
Described outdoor environment and coil temperature Acquisition Circuit, for gathering coil temperature, the outdoor environment 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, usings 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, the negative pole of described diode D1 is connected with one end of resistance R 2 after being connected with the negative pole of described diode D2, and 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 between described resistance R 2 and resistance R 3 after being connected with one end of described resistance R 4, 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, central processing unit U3 is converted into data-signal by the analog signal collecting, as the off-premises station power supply circuits basis for estimation of power down whether.
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, the negative pole of the negative pole of described diode D6 and diode D5 is connected with the positive pole of electrochemical capacitor EC3, after the positive pole of the positive pole of described diode D7 and diode D8 is connected, 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, usings 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, characteristic due to 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, dash forward while meeting the situation of 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.
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, and usings the temperature detection signal of described coil temperature sensor RT1 as the changeover control signal of outdoor motor different rotating speeds shelves.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.
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, when 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 controls of indoor motor.When temperature rises, 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; When 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, when 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 during 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, usings the temperature detection signal of the described outdoor environment temperature sensor RT2 pattern changeover control signal after as indoor and outdoor communication lost contact.The coil temperature sensor RT3 of outdoor unit heat exchanger is set, usings 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 the defrosting control signal of off-premises station.
The off-premises station control circuit of transducer air conditioning of the present invention, 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 are controlled parameter and outdoor press drives parameter respectively.The relevant control parameter of 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 corresponding systematic parameter of different off-premises station, compressor is different in this way, and this part parameter is placed in outdoor EEPROM, 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 in refrigeration system, low-temperature refrigerant steam 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, as the indoor set heat exchanger of evaporimeter, become the condenser while heating, originally as the outdoor unit heat exchanger of condenser, become the evaporimeter while heating during 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 controlled by two control panels respectively.
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 invention, by indoor set, off-premises station, refrigeration system and corresponding control circuit, formed.During refrigeration, the low pressure in refrigeration system, low-temperature refrigerant steam 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, as the indoor set heat exchanger of evaporimeter, become the condenser while heating, originally as the outdoor unit heat exchanger of condenser, become the evaporimeter while heating during 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, is controlled respectively by two control panels, by closed-loop control, makes motor speed control stable and influence by voltage not, 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 when closed loop rotation speed control loop damage, and outdoor fan continues normal work.
As mentioned above; accompanying drawings the off-premises station control circuit of a kind of transducer air conditioning of the present invention; but example and accompanying drawing that the present invention 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 invention.
Claims (3)
1. the off-premises station control circuit of transducer air conditioning, is characterized in that, comprises outdoor power supply control loop, off-premises station power-fail detection circuit, off-premises station charging control circuit and outdoor environment and coil temperature Acquisition 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 off-premises station charging control circuit, is used to the filter capacitor charging of off-premises station;
Described outdoor environment and coil temperature Acquisition Circuit, for gathering coil temperature, the outdoor environment temperature of outdoor unit heat exchanger, and by the analog signal output gathering.
Described 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;
Described outdoor 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, the negative pole of described diode D1 is connected with one end of resistance R 2 after being connected with the negative pole of described diode D2, and 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 between described resistance R 2 and resistance R 3 after being connected with one end of described resistance R 4, 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.
2. the off-premises station control circuit of transducer air conditioning according to claim 1, is characterized in that, described 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, the negative pole of the negative pole of described diode D6 and diode D5 is connected with the positive pole of electrochemical capacitor EC3, after the positive pole of the positive pole of described diode D7 and diode D8 is connected, 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.
3. according to the off-premises station control circuit of the transducer air conditioning described in claim 1 and 2, it is characterized in that, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410411929.3A CN104154604B (en) | 2014-08-20 | 2014-08-20 | Outdoor unit control circuit of variable frequency air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410411929.3A CN104154604B (en) | 2014-08-20 | 2014-08-20 | Outdoor unit control circuit of variable frequency air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104154604A true CN104154604A (en) | 2014-11-19 |
| CN104154604B CN104154604B (en) | 2017-01-18 |
Family
ID=51880171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410411929.3A Active CN104154604B (en) | 2014-08-20 | 2014-08-20 | Outdoor unit control circuit of variable frequency air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104154604B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883111A (en) * | 2015-06-25 | 2015-09-02 | 珠海格力电器股份有限公司 | Motor control method, device and motor system |
| CN107547109A (en) * | 2017-08-04 | 2018-01-05 | 广东美的制冷设备有限公司 | Air conditioner current loop communication circuit and air conditioner |
| CN108278712A (en) * | 2017-01-04 | 2018-07-13 | 奥克斯空调股份有限公司 | A kind of power control method of variable frequency compressor preheating |
| CN108931040A (en) * | 2018-08-16 | 2018-12-04 | 广州华凌制冷设备有限公司 | Electrically-controlled component and air conditioner |
| CN108931041A (en) * | 2018-08-16 | 2018-12-04 | 广州华凌制冷设备有限公司 | Electrically-controlled component and air conditioner |
| CN110762808A (en) * | 2019-10-31 | 2020-02-07 | 广东美的制冷设备有限公司 | Drive control circuit and air conditioner |
| CN111023441A (en) * | 2019-12-30 | 2020-04-17 | Tcl空调器(中山)有限公司 | Air conditioner control method and system, storage medium and air conditioner |
| CN111239460A (en) * | 2018-11-28 | 2020-06-05 | 广东威灵汽车部件有限公司 | Sampling circuit and electrical equipment |
| CN111239510A (en) * | 2019-12-30 | 2020-06-05 | 宁波奥克斯电气股份有限公司 | Self-service test method and test system for EMC of air conditioner |
| CN111600288A (en) * | 2020-05-14 | 2020-08-28 | 浙江达峰科技有限公司 | Back electromotive force discharge system and method for direct-current variable-frequency drum washing machine |
| CN111954785A (en) * | 2018-04-18 | 2020-11-17 | 三菱电机株式会社 | Control substrate and indoor unit of air conditioner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1712840A (en) * | 2004-06-25 | 2005-12-28 | 三星电子株式会社 | Multiple air conditioner system and operation of its indoor units |
| CN103066559A (en) * | 2012-11-26 | 2013-04-24 | 浙江金美电动工具有限公司 | Power outage protector |
| CN103162380A (en) * | 2011-12-19 | 2013-06-19 | 珠海格力电器股份有限公司 | Air conditioner, control circuit thereof and control method |
| WO2013099199A1 (en) * | 2011-12-28 | 2013-07-04 | ダイキン工業株式会社 | Air conditioning device |
| CN103196212A (en) * | 2013-04-18 | 2013-07-10 | 中国扬子集团滁州扬子空调器有限公司 | Indoor motor control circuit of brushless motor air-conditioning system |
| CN203980500U (en) * | 2014-08-20 | 2014-12-03 | 中国扬子集团滁州扬子空调器有限公司 | The outdoor environment of transducer air conditioning and coil temperature Acquisition Circuit |
-
2014
- 2014-08-20 CN CN201410411929.3A patent/CN104154604B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1712840A (en) * | 2004-06-25 | 2005-12-28 | 三星电子株式会社 | Multiple air conditioner system and operation of its indoor units |
| CN103162380A (en) * | 2011-12-19 | 2013-06-19 | 珠海格力电器股份有限公司 | Air conditioner, control circuit thereof and control method |
| WO2013099199A1 (en) * | 2011-12-28 | 2013-07-04 | ダイキン工業株式会社 | Air conditioning device |
| CN103066559A (en) * | 2012-11-26 | 2013-04-24 | 浙江金美电动工具有限公司 | Power outage protector |
| CN103196212A (en) * | 2013-04-18 | 2013-07-10 | 中国扬子集团滁州扬子空调器有限公司 | Indoor motor control circuit of brushless motor air-conditioning system |
| CN203980500U (en) * | 2014-08-20 | 2014-12-03 | 中国扬子集团滁州扬子空调器有限公司 | The outdoor environment of transducer air conditioning and coil temperature Acquisition Circuit |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883111B (en) * | 2015-06-25 | 2017-09-22 | 珠海格力电器股份有限公司 | Motor control method, device and electric system |
| CN104883111A (en) * | 2015-06-25 | 2015-09-02 | 珠海格力电器股份有限公司 | Motor control method, device and motor system |
| CN108278712B (en) * | 2017-01-04 | 2020-10-09 | 奥克斯空调股份有限公司 | Power supply control method for preheating of variable frequency compressor |
| CN108278712A (en) * | 2017-01-04 | 2018-07-13 | 奥克斯空调股份有限公司 | A kind of power control method of variable frequency compressor preheating |
| CN107547109A (en) * | 2017-08-04 | 2018-01-05 | 广东美的制冷设备有限公司 | Air conditioner current loop communication circuit and air conditioner |
| US11378294B2 (en) | 2017-08-04 | 2022-07-05 | Gd Midea Air-Conditioning Equipment Co., Ltd. | Air conditioner current loop communication circuit and air conditioner |
| CN107547109B (en) * | 2017-08-04 | 2021-05-25 | 广东美的制冷设备有限公司 | Air conditioner current loop communication circuit and air conditioner |
| CN111954785A (en) * | 2018-04-18 | 2020-11-17 | 三菱电机株式会社 | Control substrate and indoor unit of air conditioner |
| CN108931040A (en) * | 2018-08-16 | 2018-12-04 | 广州华凌制冷设备有限公司 | Electrically-controlled component and air conditioner |
| CN108931041A (en) * | 2018-08-16 | 2018-12-04 | 广州华凌制冷设备有限公司 | Electrically-controlled component and air conditioner |
| CN108931040B (en) * | 2018-08-16 | 2023-11-28 | 广州华凌制冷设备有限公司 | Electric control assembly and air conditioner |
| CN108931041B (en) * | 2018-08-16 | 2023-11-28 | 广州华凌制冷设备有限公司 | Electric control assembly and air conditioner |
| CN111239460A (en) * | 2018-11-28 | 2020-06-05 | 广东威灵汽车部件有限公司 | Sampling circuit and electrical equipment |
| CN110762808A (en) * | 2019-10-31 | 2020-02-07 | 广东美的制冷设备有限公司 | Drive control circuit and air conditioner |
| CN111239510A (en) * | 2019-12-30 | 2020-06-05 | 宁波奥克斯电气股份有限公司 | Self-service test method and test system for EMC of air conditioner |
| CN111023441A (en) * | 2019-12-30 | 2020-04-17 | Tcl空调器(中山)有限公司 | Air conditioner control method and system, storage medium and air conditioner |
| CN111600288A (en) * | 2020-05-14 | 2020-08-28 | 浙江达峰科技有限公司 | Back electromotive force discharge system and method for direct-current variable-frequency drum washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104154604B (en) | 2017-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104154604A (en) | Outdoor unit control circuit of variable frequency air conditioner | |
| EP2955455B1 (en) | Motor driving device and air conditioner including the same | |
| CN203980500U (en) | The outdoor environment of transducer air conditioning and coil temperature Acquisition Circuit | |
| CN103196212B (en) | Brushless electric machine air-conditioning system indoor motor control circuit | |
| CN103199496B (en) | Motor speed regulating voltage Vsp cut-off circuit of air conditioning system of brushless motor | |
| CN103836762A (en) | Variable frequency air conditioner and method and device for controlling variable frequency air conditioning system | |
| CN104344496A (en) | Air-conditioner and energy-saving control method | |
| CN203980501U (en) | The off-premises station control circuit of transducer air conditioning | |
| JPH09294334A (en) | System link generator | |
| CN104154605A (en) | Control circuit of variable frequency air conditioner | |
| CN104214901B (en) | Out-of-communication control method of indoor unit of inverter air conditioner | |
| CN104214902A (en) | Out-of-communication control method of outdoor unit of inverter air conditioner | |
| CN203980503U (en) | Transducer air conditioning control circuit | |
| CN104764142B (en) | A kind of air-conditioning electrical heating safety control circuit | |
| CN203980562U (en) | The off-premises station charging control circuit of transducer air conditioning | |
| CN106705364B (en) | The control method and air conditioner of outdoor fan under air conditioner cryogenic refrigeration operating condition | |
| CN103197699A (en) | Brushless DC (direct current) motor air conditioning system control circuit | |
| CN103199776B (en) | Direct current generator fixed rotating speed and adjustable rotating speed commutation circuit outside air conditioning chamber | |
| CN203980563U (en) | The off-premises station power-fail detection circuit of transducer air conditioning | |
| CN203151077U (en) | Motor speed adjusting voltage Vsp shutdown circuit of brushless motor air-conditioning system | |
| CN203151414U (en) | Outdoor motor control circuit of brushless motor air-conditioning system | |
| CN203149419U (en) | Air conditioning system control circuit of DC brushless motor | |
| CN107191334A (en) | Wind energy conversion system and air conditioner | |
| CN203163173U (en) | Indoor motor control circuit for brushless motor air-conditioning system | |
| CN203166817U (en) | Fixed rotating speed and adjustable rotating speed switching circuit of outdoor direct-current motor of air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 239000 No. 588, Shanghai Road, Chengdong Industrial Park, Anhui, Chuzhou Patentee after: Anhui Yangzi Air Conditioning Co., Ltd Address before: 239000 No. 588, Shanghai Road, Chengdong Industrial Park, Anhui, Chuzhou Patentee before: CHINA YANGZI GROUP CHUZHOU YANGZI AIR CONDITIONER Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |