CN203278716U - Compressor soft-start control circuit and air conditioner - Google Patents
Compressor soft-start control circuit and air conditioner Download PDFInfo
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- CN203278716U CN203278716U CN201320288704.4U CN201320288704U CN203278716U CN 203278716 U CN203278716 U CN 203278716U CN 201320288704 U CN201320288704 U CN 201320288704U CN 203278716 U CN203278716 U CN 203278716U
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- 238000010586 diagram Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
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Abstract
The utility model discloses a compressor soft-start control circuit and an air conditioner. The compressor soft-start control circuit comprises a control chip, an electrical-network zero-line input end and a starting circuit. The starting circuit comprises a first relay, a thermistor, a first capacitor and a second capacitor. A control coil of the first relay is electrically connected with the control chip, a first contact of the first relay is electrically connected with an input end of the zero line of an electrical network, and a second contact corresponding to the first contact is connected with a first end of the thermistor. A second end of the thermistor is connected with a first end of the first capacitor. A second end of the first capacitor is electrically connected with a starting end of a compressor. A first end of the second capacitor is electrically connected with the input end of the zero line of the electrical network, and a second end of the second capacitor is electrically connected with the starting end of the compressor. The air conditioner comprises the compressor soft-start control circuit. The problems that an input power supply electrical-network line and a switch are burned out because of an overlarge current at a starting moment of the compressor are solved, and the compressor soft-start control circuit is benefit to improve safety of a household high-power air conditioner.
Description
Technical field
The utility model relates to the air conditioner technical field, relates in particular to a kind of compressor SS (soft start) control circuit and air conditioner.
Background technology
In recent years, progressively raising along with people's living standard, air-conditioning products has entered common people house, air conditioner is bought as luxury goods by people no longer as before, but be used as refrigerator, television set is the same treats as daily household appliances, particularly the young man, just considered purchase and the installation of air-conditioning products when buying house finishing.
Along with human settlement's improvement, people's living space is increasing, simultaneously along with the rising of Global Temperature, also becomes more and more hot summer, so use the air conditioner of high-power refrigeration to become the first-selection of people's cooling.Therefore the air conditioner of 3,5 is also generally bought by everybody; when people use these powerful air conditioners in start; compressor often occurring comes to a startup; the phenomenons such as switch trip or leakage switch protection have just occured; even can burn the input power power network line that is connected with air conditioner when serious, and the main cause that this phenomenon occurs is: the compressor start immediate current is excessive causes heavy current surge to the input power power network line.
wherein, the excessive reason of compressor start immediate current is: because general family is all generally Winding Single Phase Capacitance, also peak times of power consumption just in summer simultaneously, line voltage is lower, for the air conditioner that makes large number can be in operation under the single phase poaer supply environment and particularly when line voltage again during not enough 220V, in order to start the compressor of air conditioner, generally increase large bulk capacitance between the start end of compressor and power generating facilities and power grids, as shown in Figure 1, Fig. 1 is the electrical block diagram of compressor and compressor SS (soft start) control circuit in prior art, namely in the two ends parallel connection of the second capacitor C 2 the first capacitor C 1 and the first relay J 1, the capacity of the first capacitor C 1 that increases is generally greater than the second capacitor C 2, and after having increased by the first capacitor C 1, the starting current of compressor will be very large, even can reach 5～8 times of left and right of normal running current.And so large running current is easy to surpass the load current value of earth leakage circuit-breaker, and at this moment the phenomenon of switch trip will occur, and even also can melt the contact of switch fall, and damages switch or socket.If aging phenomenon appears in the power line of user's family, in case starting current is excessive, even also can breaking out of fire etc. security incident, have a strong impact on people's production and life.
The utility model content
Main purpose of the present utility model is to provide a kind of compressor SS (soft start) control circuit, is intended to prevent that the compressor start immediate current is excessive and damage input power power network line and switch, improves the fail safe that the large power air-conditioned device of family expenses uses.
To achieve these goals, the utility model proposes a kind of compressor SS (soft start) control circuit, this compressor SS (soft start) control circuit comprises control chip, electrical network zero line input, the electrical network live wire input that is electrically connected to the common port of compressor, and the start-up circuit that is electrically connected to the start end of compressor, this start-up circuit comprises the first relay, thermistor, the first electric capacity and the second electric capacity, described control chip comprises the first output control terminal, wherein:
The control coil of described the first relay is electrically connected to the first output control terminal of control chip, and the first contact of described the first relay is electrically connected to electrical network zero line input, and second contact corresponding with this first contact is connected with the first end of thermistor; The second end of described thermistor is connected with the first end of the first electric capacity; The second end of described the first electric capacity is electrically connected to the start end of compressor; The first end of described the second electric capacity is electrically connected to electrical network zero line input, and the second end of described the second electric capacity is electrically connected to the start end of compressor.
Preferably, also comprise zero cross detection circuit, described control chip further comprises an input, and described zero cross detection circuit is electrically connected to the input of control chip.
Preferably, described zero cross detection circuit comprises: power supply, the first rectifying tube, the second rectifying tube, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 3rd electric capacity and triode; The anode of described the first rectifying tube is electrically connected to described electrical network live wire input, and negative electrode is connected with the negative electrode of the second rectifying tube; The anode of described the second rectifying tube is electrically connected to described electrical network zero line input; The first end of described the first resistance and the first rectifying tube be connected the connected node of rectifying tube and be connected, the second end is connected with the first end of the second resistance; The second end ground connection of described the second resistance; The first end of described the 3rd resistance and the first resistance be connected the connected node of resistance and be connected, the second end is connected with the base stage of triode; The collector electrode of described triode is connected with the input of control chip, grounded emitter; The first end of described the 4th resistance is connected with power supply, and the second end is connected connected node and is connected with control chip with triode; The first end of described the 3rd electric capacity is connected connected node and is connected with control chip with triode, the second end ground connection.
Preferably, also comprise switching circuit, described switching circuit comprises bidirectional triode thyristor and the second relay; Described control chip further comprises one second output control terminal and one the 3rd output control terminal, the first main electrode of described bidirectional triode thyristor is electrically connected to electrical network zero line input, the second main electrode is electrically connected to the operation end of compressor, triggers grid and is electrically connected to the 3rd output control terminal of control chip; The control coil of described the second relay is electrically connected to the second output control terminal of control chip, and the first contact of described the second relay is electrically connected to electrical network zero line input, and second contact corresponding with this first contact is electrically connected to the operation end of compressor.
Preferably, described start-up circuit also comprises the discharge resistance that is connected in described the first electric capacity two ends in parallel.
Preferably, described thermistor is the thermistor of negative temperature coefficient.
Preferably, described thermistor comprises the first thermistor and the second thermistor; The first end of described the first thermistor is connected with the second contact of the first relay, and the second end is connected with the first end of the first electric capacity, and described the second thermistor is connected in the two ends of the first thermistor in parallel.
the utility model also provides a kind of air conditioner, this air conditioner comprises the compressor SS (soft start) control circuit, this compressor SS (soft start) control circuit comprises control chip, electrical network zero line input, the electrical network live wire input that is electrically connected to the common port of compressor, and the start-up circuit that is electrically connected to the start end of compressor, this start-up circuit comprises the first relay, thermistor, the first electric capacity and the second electric capacity, wherein: described the first relay is electrically connected to control chip, the first contact of described the first relay is electrically connected to electrical network zero line input, second contact corresponding with this first contact is connected with the first end of thermistor, the second end of described thermistor is connected with the first end of the first electric capacity, the second end of described the first electric capacity is electrically connected to the start end of compressor, the first end of described the second electric capacity is electrically connected to electrical network zero line input, and the second end of described the second electric capacity is electrically connected to the start end of compressor.
The utility model compressor SS (soft start) control circuit is by setting up thermistor on existing compressor SS (soft start) control circuit basis; current-limiting protection effect due to thermistor; can be in compressor start moment; reduce large electric current to the impact of input power power network line; to start immediate current excessive and burn thereby protected input power power network line and switch can not be compressed machine, improved the fail safe that the large power air-conditioned device of family expenses uses.Simultaneously, the utility model has advantages of that also circuit structure is simple and easily realizes.
Description of drawings
Fig. 1 is the electrical block diagram of compressor and compressor SS (soft start) control circuit in prior art;
Fig. 2 is the electrical block diagram of the utility model compressor SS (soft start) control circuit one embodiment.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model proposes a kind of compressor SS (soft start) control circuit.
With reference to Fig. 2, Fig. 2 is the electrical block diagram of the utility model compressor SS (soft start) control circuit one embodiment.
As Fig. 2, compressor has start end S, operation end R and common port C, and wherein the common port C of compressor is electrically connected to electrical network live wire input L; The compressor SS (soft start) control circuit that the utility model proposes comprises control chip 10, zero cross detection circuit 20, switching circuit 30 and start-up circuit 40.Zero cross detection circuit 20 is connected between AC network and control chip 10, is used for detecting in real time the zero crossing of input AC electricity and offering control chip 10.Control chip 10 has input IN, the first output control terminal OUT1, the second output control terminal OUT2 and the 3rd output control terminal OUT3, input IN is electrically connected to zero cross detection circuit 20, the 3rd output control terminal OUT3 all is electrically connected to switching circuit 30 with the second output control terminal OUT2, the first output control terminal OUT1 is electrically connected to start-up circuit 40, and control chip 10 is used for outputing control signals to switching circuit 30 according to the zero crossing information that detects.Switching circuit 30 is connected between the operation end R of electrical network zero line input N and compressor, switching circuit 30 is used for receiving the control signal of control chip 10 and carrying out conducting or shutoff according to control signal, and can regulate according to the control signal of control chip 10 size of compressor input voltage when conducting.Start-up circuit 40 is connected between electrical network zero line input N and compressor start end S, and start-up circuit 40 is used for providing enough staring torques to compressor, and the compressor rotation is started up.
Particularly, above-mentioned start-up circuit 40 comprises the first relay J 1, thermistor 50, the first capacitor C 1 and the second capacitor C 2.The first contact of the first relay J 1 is electrically connected to electrical network zero line input N, and second contact corresponding with this first contact is connected with the first end of thermistor 50; The second end of thermistor 50 is connected with the first end of the first capacitor C 1; The second end of the first capacitor C 1 is electrically connected to the start end S of compressor; The first end of the second capacitor C 2 is electrically connected to electrical network zero line input N, and the second end of the second capacitor C 2 is electrically connected to the start end S of compressor.Wherein, thermistor 50 be a kind of resistance value with the variation of its resistive element temperature the temperature-sensitive element of marked change, preferably, thermistor 50 is the thermistor of negative temperature coefficient, because the thermistor cold conditions impedance of negative temperature coefficient is very large, can play good metering function.And due to the thermistor of the negative temperature coefficient continuous action by its electric current, the resistance value of the thermistor of negative temperature coefficient will drop to very little degree, and at this moment, the power that its consumes almost can be ignored, and can not affect the normal operation of compressor.Owing to having increased thermistor 50 between the first capacitor C 1 and the first relay J 1, so the impact of large electric current to the input power electrical network in the time of can stopping compressor moment startup.In addition, the control coil of the first relay J 1 is electrically connected to the first output control terminal OUT1 of control chip 10.Namely output control signals to the control coil of the first relay J 1 by the first output control terminal OUT1 by control chip 10, with conducting and the shutoff of controlling the first relay J 1.
And zero cross detection circuit 20 comprises: power supply VCC, the first rectifying tube D1, the second rectifying tube D2, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 3rd capacitor C 3 and triode Q1; The anode of the first rectifying tube D1 is electrically connected to electrical network live wire input L, and negative electrode is connected with the negative electrode of the second rectifying tube D2; The anode of the second rectifying tube D2 is electrically connected to electrical network zero line input N; The first end of the first resistance R 1 and the first rectifying tube D1 be connected the connected node of rectifying tube D2 and be connected, the second end is connected with the first end of the second resistance R 2; The second end ground connection of the second resistance R 2; The first end of the 3rd resistance R 3 and the first resistance R 1 be connected the connected node of resistance R 2 and be connected, the second end is connected with the base stage of triode Q1; The collector electrode of triode Q1 is connected with the input IN of control chip 10, grounded emitter; The first end of the 4th resistance R 4 is connected with power supply VCC, and the second end is connected with the connected node that triode Q1 is connected with control chip; The first end of the 3rd capacitor C 3 is connected with the connected node that triode Q1 is connected with control chip, the second end ground connection.
In addition, switching circuit 30 comprises: bidirectional triode thyristor K1 and the second relay J 2; The first main electrode of bidirectional triode thyristor K1 is electrically connected to electrical network zero line input N, and the second main electrode is electrically connected to the operation end R of compressor, triggers grid and is electrically connected to the 3rd output control terminal OUT3 of control chip 10; The first contact of the second relay J 2 is electrically connected to electrical network zero line input N, and second contact corresponding with this first contact is electrically connected to the operation end R of compressor.The control coil of the second relay J 2 is electrically connected to the second output control terminal OUT2 of control chip 10.Namely output control signals to the control coil of the second relay J 2 by the second output control terminal OUT2 by control chip 10, with conducting and the shutoff of controlling the second relay J 2.
Further, start-up circuit 40 also comprises the discharge resistance R5 that is connected in described the first capacitor C 1 two ends in parallel.This discharge resistance R5 is the discharge resistance of the first capacitor C 1, can be at compressor start complete and disconnect the first relay J 1 after, a large amount of charge discharging that the first capacitor C 1 is assembled are fallen, for the next soft start of compressor ready.
In order better to protect input power power network line and switch can not be compressed the impact of machine starting current and damage, the first thermistor NTC1 and the second thermistor NTC2 that is arranged in parallel replaced above-mentioned thermistor 50; The first end of the first thermistor NTC1 is connected with the second contact of the first relay J 1, and the second end is connected with the first end of the first capacitor C 1, and the second thermistor NTC2 is connected in the two ends of the first thermistor NTC1 in parallel.The first thermistor NTC1 wherein being set in parallel with the second thermistor NTC2, is for the large electric current of compressor start moment generation is shunted.Should be understood that, the first thermistor NTC1 and the second thermistor NTC2 also are the thermistor of negative temperature coefficient.
With reference to Fig. 2, the concrete principle of the utility model compressor SS (soft start) control circuit is achieved as follows:
after the utility model compressor SS (soft start) control circuit initially powers on, zero cross detection circuit 20 detects the zero crossing of input ac power in real time, the crossover point signal that transmission detects after zero crossing being detected is to control chip 10, control chip 10 outputs control signals to the control utmost point of the bidirectional triode thyristor K1 of switching circuit 30 according to the crossover point signal that receives, controlling bidirectional triode thyristor K1 starts with a larger angle of flow, AC power is by the stator coil of bidirectional triode thyristor K1 output one small voltage to compressor, control chip 10 is controlled the first relay J 1 adhesive simultaneously, the first capacitor C 1 is in order to the electric current of the start end that increases compressor, provide enough staring torques to compressor, thereby realize that compressor turns at the small voltage backspin, after this gradually reduce the angle of flow of bidirectional triode thyristor K1, improve the starting resistor of compressor, until after reaching the rated voltage of compressor, control chip 10 is controlled the second relay J 2 adhesives, and disconnect bidirectional triode thyristor K1 and the first relay J 1 after waiting for 1 second.So just guaranteed that compressor has enough staring torques.Originally the first larger capacitor C 1 of capacity makes compressor when starting, and this first capacitor C 1 branch road can produce larger electric current, and so large electric current can direct shock input power generating facilities and power grids circuit.But owing to being connected thermistor 50 or the first thermistor NTC1 and the second thermistor NTC2 between the first capacitor C 1 and the first relay J 1, and the first thermistor NTC1 and the second thermistor NTC2 are in parallel, therefore, large electric current in the time of effectively suppressing compressor start prevents the large electric current direct shock input power generating facilities and power grids circuit of compressor start moment and power network line is burnt.
in addition, just disconnect the reasons are as follows of the first relay J 1 after the second relay J 2 adhesive 1 second: even if the second relay J 2 adhesives, because compressor is inductive load, according to the characteristic of inductive load as can be known: its electric current of flowing through can not suddenly change, so the electric current on compressor can not increase at once, if disconnect at once the first relay J 1 this moment, the phenomenon that may cause staring torque and not cause compressor start not, and to guarantee that compressor has enough staring torques, just must increase the capacity of start-up capacitance, thereby can not be in the second relay J 2 adhesives, disconnect at once the first relay J 1.But to after the second relay J 2 adhesive 1 second, guarantee that compressor has enough staring torques that compressor start is got up and just disconnects the first relay J 1 afterwards.
Compared to prior art; the utility model compressor SS (soft start) control circuit is by setting up thermistor 50 on existing compressor SS (soft start) control circuit basis; current-limiting protection effect due to thermistor 50; can be in compressor start moment; reduce large electric current to the impact of input power power network line; to start immediate current excessive and burn thereby protected input power power network line and switch thereof can not be compressed machine, improved the fail safe that the large power air-conditioned device of family expenses uses.In addition, just disconnected the first relay J 1 afterwards in 1 second by controlling the second relay J 2 adhesive, can guarantee further that compressor has enough staring torques to start.
The utility model also proposes a kind of air conditioner, and this air conditioner comprises the above-mentioned compressor SS (soft start) control circuit, and the detailed construction of this compressor SS (soft start) control circuit can with reference to above-described embodiment, not given unnecessary details herein.Owing to having used the above-mentioned compressor SS (soft start) control circuit in air conditioner, therefore, the utility model air conditioner does not exist compressor to start immediate current excessive and damage the problem of input power power network line and switch thereof, be conducive to improve the fail safe that air conditioner uses, more be suitable for people and use.
The above is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (8)
1. compressor SS (soft start) control circuit, comprise control chip, electrical network zero line input, the electrical network live wire input that is electrically connected to the common port of compressor, it is characterized in that, also comprise the start-up circuit that is electrically connected to the start end of compressor, this start-up circuit comprises the first relay, thermistor, the first electric capacity and the second electric capacity, described control chip comprises the first output control terminal, wherein:
The control coil of described the first relay is electrically connected to the first output control terminal of control chip, and the first contact of described the first relay is electrically connected to electrical network zero line input, and second contact corresponding with this first contact is connected with the first end of thermistor; The second end of described thermistor is connected with the first end of the first electric capacity; The second end of described the first electric capacity is electrically connected to the start end of compressor; The first end of described the second electric capacity is electrically connected to electrical network zero line input, and the second end of described the second electric capacity is electrically connected to the start end of compressor.
2. compressor SS (soft start) control circuit according to claim 1, is characterized in that, also comprises zero cross detection circuit, and described control chip further comprises an input, and described zero cross detection circuit is electrically connected to the input of control chip.
3. compressor SS (soft start) control circuit according to claim 2, it is characterized in that, described zero cross detection circuit comprises power supply, the first rectifying tube, the second rectifying tube, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 3rd electric capacity and triode; The anode of described the first rectifying tube is electrically connected to described electrical network live wire input, and negative electrode is connected with the negative electrode of the second rectifying tube; The anode of described the second rectifying tube is electrically connected to described electrical network zero line input; The first end of described the first resistance and the first rectifying tube be connected the connected node of rectifying tube and be connected, the second end is connected with the first end of the second resistance; The second end ground connection of described the second resistance; The first end of described the 3rd resistance and the first resistance be connected the connected node of resistance and be connected, the second end is connected with the base stage of triode; The collector electrode of described triode is connected with the input of control chip, grounded emitter; The first end of described the 4th resistance is connected with power supply, and the second end is connected connected node and is connected with control chip with triode; The first end of described the 3rd electric capacity is connected connected node and is connected with control chip with triode, the second end ground connection.
4. compressor SS (soft start) control circuit according to claim 1, is characterized in that, also comprises switching circuit, and described switching circuit comprises bidirectional triode thyristor and the second relay; Described control chip further comprises one second output control terminal and one the 3rd output control terminal, the first main electrode of described bidirectional triode thyristor is electrically connected to electrical network zero line input, the second main electrode is electrically connected to the operation end of compressor, triggers grid and is electrically connected to the 3rd output control terminal of control chip; The control coil of described the second relay is electrically connected to the second output control terminal of control chip, and the first contact of described the second relay is electrically connected to electrical network zero line input, and second contact corresponding with this first contact is electrically connected to the operation end of compressor.
5. compressor SS (soft start) control circuit according to claim 1, is characterized in that, described start-up circuit also comprises the discharge resistance that is connected in described the first electric capacity two ends in parallel.
6. compressor SS (soft start) control circuit according to claim 1, is characterized in that, described thermistor is the thermistor of negative temperature coefficient.
7. compressor SS (soft start) control circuit according to claim 1, is characterized in that, described thermistor comprises the first thermistor and the second thermistor; The first end of described the first thermistor is connected with the second contact of the first relay, and the second end is connected with the first end of the first electric capacity, and described the second thermistor is connected in the two ends of the first thermistor in parallel.
8. an air conditioner, is characterized in that, comprises the described compressor SS (soft start) control circuit of claim 1-7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320288704.4U CN203278716U (en) | 2013-05-23 | 2013-05-23 | Compressor soft-start control circuit and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320288704.4U CN203278716U (en) | 2013-05-23 | 2013-05-23 | Compressor soft-start control circuit and air conditioner |
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| CN203278716U true CN203278716U (en) | 2013-11-06 |
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| CN201320288704.4U Expired - Fee Related CN203278716U (en) | 2013-05-23 | 2013-05-23 | Compressor soft-start control circuit and air conditioner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156312A (en) * | 2015-09-15 | 2015-12-16 | 珠海格力电器股份有限公司 | Constant-frequency compressor starting circuit and starting method |
| CN105299992A (en) * | 2015-11-26 | 2016-02-03 | 广东美的制冷设备有限公司 | Compressor control system, air conditioner and compressor control method |
| CN105756895A (en) * | 2016-03-03 | 2016-07-13 | 广东美芝制冷设备有限公司 | Capacity-variable compressor assembly and refrigerating device provided with capacity-variable compressor assembly |
| CN108282113A (en) * | 2018-03-13 | 2018-07-13 | 厦门宏发电声股份有限公司 | A kind of electric motor starting banked relay device |
| CN109579388A (en) * | 2018-11-23 | 2019-04-05 | Tcl空调器(中山)有限公司 | Compressor SS (soft start) control circuit, method and air conditioner |
| CN112146253A (en) * | 2020-09-23 | 2020-12-29 | 海信（山东）空调有限公司 | Air conditioner and compressor control method thereof |
-
2013
- 2013-05-23 CN CN201320288704.4U patent/CN203278716U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156312A (en) * | 2015-09-15 | 2015-12-16 | 珠海格力电器股份有限公司 | Constant-frequency compressor starting circuit and starting method |
| CN105299992A (en) * | 2015-11-26 | 2016-02-03 | 广东美的制冷设备有限公司 | Compressor control system, air conditioner and compressor control method |
| CN105756895A (en) * | 2016-03-03 | 2016-07-13 | 广东美芝制冷设备有限公司 | Capacity-variable compressor assembly and refrigerating device provided with capacity-variable compressor assembly |
| CN105756895B (en) * | 2016-03-03 | 2018-07-17 | 广东美芝制冷设备有限公司 | Positive displacement compressor component and refrigerating plant with it |
| CN108282113A (en) * | 2018-03-13 | 2018-07-13 | 厦门宏发电声股份有限公司 | A kind of electric motor starting banked relay device |
| CN108282113B (en) * | 2018-03-13 | 2023-11-03 | 厦门宏发电声股份有限公司 | Motor starting combined relay device |
| CN109579388A (en) * | 2018-11-23 | 2019-04-05 | Tcl空调器(中山)有限公司 | Compressor SS (soft start) control circuit, method and air conditioner |
| CN109579388B (en) * | 2018-11-23 | 2021-02-05 | Tcl空调器(中山)有限公司 | Compressor soft start control circuit and method and air conditioner |
| CN112146253A (en) * | 2020-09-23 | 2020-12-29 | 海信（山东）空调有限公司 | Air conditioner and compressor control method thereof |
| CN112146253B (en) * | 2020-09-23 | 2021-12-17 | 海信（山东）空调有限公司 | Air conditioner and compressor control method thereof |
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Granted publication date: 20131106 Termination date: 20140523 |