CN105570988A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN105570988A CN105570988A CN201511034561.4A CN201511034561A CN105570988A CN 105570988 A CN105570988 A CN 105570988A CN 201511034561 A CN201511034561 A CN 201511034561A CN 105570988 A CN105570988 A CN 105570988A
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- valve
- conditioner
- air
- heat exchanger
- branch road
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner and a control method thereof. The air conditioner comprises a compressor, an outdoor heat exchanger and an indoor heat exchanger connected in sequence to form a cycle; an outlet of the compressor and the outdoor heat exchanger are connected through a first pipeline; and the outdoor heat exchanger and the indoor heat exchanger are connected through a second pipeline. The air conditioner further comprises a first branch, a first valve and a second valve; a first end of the first branch is connected to the first pipeline; a second end of the first branch is connected to the second pipeline; the first valve is arranged on the first branch; and the second valve is arranged on the first pipeline and positioned between the first end of the first branch and the outdoor heat exchanger. The air conditioner effectively solves the problem of easiness in frosting of the indoor heat exchanger when the air conditioner in the prior art is operated under the working condition of low temperature.
Description
Technical field
The present invention relates to the technical field of air-conditioner, in particular to a kind of air-conditioner and control method thereof.
Background technology
In prior art, air-conditioner is when cold operation, and when the inlet pipe temperature of indoor heat exchanger is less than or equal to uniform temperature, indoor heat exchanger there will be the phenomenon of frosting.
Summary of the invention
Main purpose of the present invention is to provide a kind of air-conditioner and control method thereof, to solve the problem of air-conditioner of the prior art easy frosting of indoor heat exchanger when worst cold case runs.
To achieve these goals, according to an aspect of the present invention, provide a kind of air-conditioner, comprise: connect in turn and form the compressor, outdoor heat exchanger and the indoor heat exchanger that circulate, connected by the first pipeline between the outlet of compressor and outdoor heat exchanger, connected by the second pipeline between outdoor heat exchanger and indoor heat exchanger; Air-conditioner also comprises: the first branch road, and the first end of the first branch road is connected on the first pipeline, and the second end of the first branch road is connected on the second pipeline; First valve, the first valve is arranged on the first leg; Second valve, the second valve to be arranged on the first pipeline and between the first end and outdoor heat exchanger of the first branch road.
Further, air-conditioner also comprises throttle part, the second branch road and pressure-regulating valve, throttle part to be arranged on the second pipeline and between second end and indoor heat exchanger of the first branch road, the first end of the second branch road is connected between the first end of the first branch road and the first valve or between the second valve and compressor, second end of the second branch road is connected between pressure-regulating valve and indoor heat exchanger, and pressure-regulating valve is arranged on the second branch road.
Further, air-conditioner also comprises the 3rd valve, and the 3rd valve is arranged between the first valve and the second end of the first branch road, and the 3rd valve is check valve, and the flow direction of the 3rd valve is the second end of the first valve to the first branch road.
Further, the second valve is check valve, and the flow direction of the second valve is that the first end of the first branch road is to outdoor heat exchanger.
Further, the first valve is magnetic valve.
Further, air-conditioner also comprises oil eliminator, and oil eliminator is arranged between the first end being exported to the first branch road of compressor, and the isolated oil of oil eliminator is back to the entrance of compressor.
Further, air-conditioner also comprises gas-liquid separator, on the pipeline between the outlet of gas-liquid separator heat exchanger disposed in the interior and suction port of compressor.
Further, outdoor heat exchanger is water cooling heat exchanger.
According to a further aspect in the invention, provide a kind of control method of air-conditioner, air-conditioner is above-mentioned air-conditioner, and the control method of air-conditioner comprises: the Current Temperatures obtaining the indoor heat exchanger of air-conditioner; According to the Current Temperatures of the indoor heat exchanger of air-conditioner, judge whether the first valve of air-conditioner meets the condition opened; If the first valve meets the condition opened, then open the first valve.
According to a further aspect in the invention, provide a kind of control method of air-conditioner, air-conditioner is above-mentioned air-conditioner, and the control method of air-conditioner comprises: the Current Temperatures obtaining the indoor heat exchanger of air-conditioner; According to the Current Temperatures of the indoor heat exchanger of air-conditioner, judge whether the first valve of air-conditioner meets the condition opened; If the first valve meets the condition opened, then open the first valve.
Further, according to the Current Temperatures of the indoor heat exchanger of air-conditioner, judge that whether the first valve of air-conditioner meets to open condition and comprise: when the Current Temperatures of indoor heat exchanger is less than or equal to the first preset temperature, judges that the first valve meets and open condition, then open the first valve; When the Current Temperatures of indoor heat exchanger is greater than the first preset temperature and is less than or equal to the second preset temperature, then the Current Temperatures based on system high pressure side judges whether the first valve of air-conditioner meets the condition opened; When the Current Temperatures of indoor heat exchanger is greater than the second preset temperature, judges that the first valve does not meet and open condition, then the first valve closing.
Further, Current Temperatures based on system high pressure side judges whether the first valve of air-conditioner meets the condition opened and comprise: when the Current Temperatures of system high pressure side is less than or equal to the 3rd preset temperature, judge that the first valve meets and open condition, then open the first valve; When the Current Temperatures that the 3rd preset temperature is less than system high pressure side is less than or equal to the 4th preset temperature, the first valve maintains standing state; When the 4th preset temperature is less than system high pressure side, judges that the first valve does not meet and open condition, the first valve closing.
Further, when the Current Temperatures of indoor heat exchanger is greater than the second preset temperature, and when the Current Temperatures of system high pressure side is greater than the second preset temperature, the second valve closing, the pressure-regulating valve of air-conditioner is opened.
Apply technical scheme of the present invention, set up the first branch road, the first valve and the second valve.When air-conditioner freezes, when the inlet temperature of indoor heat exchanger is lower than predetermined temperature, first valve open, second valve closing, the refrigerant of air-conditioner does not carry out heat exchange cooling by outdoor heat exchanger, raised by the refrigerant temperature of indoor heat exchanger, so just efficiently avoid the problem of air-conditioner easy frosting of indoor heat exchanger when worst cold case runs.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment according to air-conditioner of the present invention.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, compressor; 20, outdoor heat exchanger; 30, indoor heat exchanger; 40, the first valve; 50, the second valve; 60, throttle part; 70, pressure-regulating valve; 80, the 3rd valve; 100, the first pipeline; 200, the second pipeline; 300, the first branch road; 400, the second branch road.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the air-conditioner of the present embodiment comprises: connect in turn and form the compressor 10, outdoor heat exchanger 20 and the indoor heat exchanger 30 that circulate.Connected by the first pipeline 100 between the outlet of compressor 10 and outdoor heat exchanger 20, connected by the second pipeline 200 between outdoor heat exchanger 20 and indoor heat exchanger 30.Air-conditioner also comprises: the first branch road 300, first valve 40 and the second valve 50.The first end of the first branch road 300 is connected on the first pipeline 100, and the second end of the first branch road 300 is connected on the second pipeline 200.First valve 40 is arranged on the first branch road 300.Second valve 50 to be arranged on the first pipeline 100 and between the first end and outdoor heat exchanger 20 of the first branch road 300.Wherein, the first branch road 300 is high pressure bypass branch, and the second branch road 400 is high voltage protective branch road.
The technical scheme of application the present embodiment, has set up the first branch road, the first valve and the second valve.When air-conditioner freezes, when the inlet temperature of indoor heat exchanger 30 is lower than the first preset temperature, first valve 40 is opened, second valve 50 is closed, the refrigerant of air-conditioner does not carry out heat exchange cooling by outdoor heat exchanger 20, raised by the refrigerant temperature of indoor heat exchanger 30, so just efficiently avoid the problem of the easy frosting of air-conditioner indoor heat exchanger 30 when worst cold case runs.
As shown in Figure 1, in the technical scheme of the present embodiment, air-conditioner also comprises throttle part 60, second branch road 400 and pressure-regulating valve 70, throttle part 60 is arranged on the second pipeline 200 and between second end and indoor heat exchanger 30 of the first branch road 300, the first end of the second branch road 400 is connected between the first end of the first branch road 300 and the first valve 40.Certainly, be also fine as one skilled in the art will appreciate that the first end of the second branch road 400 is arranged between the second valve 50 and compressor 10.Second end of the second branch road 400 is connected between pressure-regulating valve 70 and indoor heat exchanger 30, and pressure-regulating valve 70 is arranged on the second branch road 400.When the temperature of indoor heat exchanger 30 import department is greater than the second preset temperature, (system pressure is too high) pressure-regulating valve is opened and is carried out pressure release, and the power of compressor 10 increases with the safe operation ensureing air-conditioner simultaneously.
As shown in Figure 1, in the technical scheme of the present embodiment, air-conditioner also comprises the 3rd valve the 80, three valve 80 and is arranged between the first valve 40 and the second end of the first branch road 300,3rd valve 80 is check valve, and the flow direction of the 3rd valve 80 is the second end of the first valve 40 to the first branch road 300.When the refrigerant of air-conditioner is by outdoor heat exchanger 20, the 3rd valve 80 automatic cut-off, said structure is arranged simply, decreases the balancing boom device of automatic circuit, enhances the automatic control function of air-conditioner.
As shown in Figure 1, in the technical scheme of the present embodiment, the second valve 50 is check valve, and the flow direction of the second valve 50 is that the first end of the first branch road 300 is to outdoor heat exchanger 20.When the refrigerant of air-conditioner is by the second branch road 400, the second valve 50 automatic cut-off, said structure is arranged simply, decreases the balancing boom device of automatic circuit, enhances the automatic control function of air-conditioner.Further, the first valve 40 is magnetic valve, and said structure controls by pressure sensor, temperature-sensitive the open and close realizing the first valve 40, and said structure enhances the automatic control function of air-conditioner.Further, outdoor heat exchanger 20 is water cooling heat exchanger, and water cooling heat exchanger is applied in the present embodiment the flow of the cooling water that efficiently avoid frequent switch water cooling heat exchanger.
As shown in Figure 1, in the technical scheme of the present embodiment, air-conditioner also comprises oil eliminator, and oil eliminator is arranged between the first end being exported to the first branch road 300 of compressor 10, and the isolated oil of oil eliminator is back to the entrance of compressor 10.Being provided with of gs-oil separator is beneficial to the clarity keeping refrigerant.Particularly, the oil return separated of oil eliminator is to the entrance of compressor 10, and said structure ensure that the lubrication of compressor 10, does not need again to fill into lubricating oil to compressor 10 again, saves lubricating oil.
As shown in Figure 1, in the technical scheme of the present embodiment, air-conditioner also comprises gas-liquid separator, on the pipeline between the outlet of gas-liquid separator heat exchanger 30 disposed in the interior and compressor 10 entrance.The outlet of heat exchanger 30 refrigerant out carries out the gas-liquid separation of refrigerant by gas-liquid separator indoor, and the setting of said structure efficiently avoid the generation of the liquid hit phenomenon of compressor 10.
Present invention also provides a kind of control method of air-conditioner, air-conditioner is above-mentioned air-conditioner, and the control method of air-conditioner comprises: the Current Temperatures obtaining the indoor heat exchanger 30 of air-conditioner.
According to the Current Temperatures of the indoor heat exchanger 30 of air-conditioner, judge whether the first valve 40 of air-conditioner meets the condition opened.If the first valve 40 meets the condition opened, then open the first valve 40.
In the technical scheme of the present embodiment, according to the Current Temperatures of the indoor heat exchanger 30 of air-conditioner, judge whether the first valve 40 of air-conditioner meets and open condition and comprise:
One, when the Current Temperatures of indoor heat exchanger 30 is less than or equal to the first preset temperature, judge that the first valve 40 meets and open condition, then open the first valve 40.When compressor low-frequency operation, the first valve 40 is opened, and the first branch road 300 is communicated with, and system high pressure raises, and low pressure raises, and indoor heat exchanger 30 is not easy frosting, can not frequently occur that anti-freeze is protected, and avoid the appearance of low-voltage variation.
Two, when the Current Temperatures of indoor heat exchanger 30 is greater than the first preset temperature and is less than or equal to the second preset temperature, Current Temperatures (Current Temperatures of system high pressure side refers to that compressor 10 is vented to saturation temperature corresponding to the pressure of the pipeline between outdoor heat exchanger 20) then based on system high pressure side judges whether the first valve 40 of air-conditioner meets the condition opened, be divided into three kinds of situations, specific as follows:
1, when the Current Temperatures of system high pressure side is less than or equal to the 3rd preset temperature, judge that the first valve 40 meets and open condition, then open the first valve 40, first branch road 300 and be communicated with.
2, when the Current Temperatures that the 3rd preset temperature is less than system high pressure side is less than or equal to the 4th preset temperature, the first valve 40 maintains standing state, and the first branch road 300 maintains standing state.
3, when the 4th preset temperature is less than system high pressure side, the first valve 40 is closed, and the first branch road 300 disconnects.
Three, when the Current Temperatures of indoor heat exchanger 30 is greater than the second preset temperature, judge that the first valve 40 does not meet and open condition, then the first valve 40 is closed, and the first branch road 300 disconnects, and now compressor exports large.
Preferably, when system high pressure is greater than the second preset temperature, the second valve 50 is closed, and pressure-regulating valve 70 is opened, and the second branch road 400 is communicated with, and plays release effect, protection compressor reliability service.。
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. an air-conditioner, comprising:
Connect in turn and form the compressor (10), outdoor heat exchanger (20) and the indoor heat exchanger (30) that circulate, connected by the first pipeline (100) between the outlet of described compressor (10) and described outdoor heat exchanger (20), connected by the second pipeline (200) between described outdoor heat exchanger (20) and described indoor heat exchanger (30);
It is characterized in that, described air-conditioner also comprises:
First branch road (300), the first end of described first branch road (300) is connected on described first pipeline (100), and the second end of described first branch road (300) is connected on described second pipeline (200);
First valve (40), described first valve (40) is arranged on described first branch road (300);
Second valve (50), described second valve (50) is arranged on described first pipeline (100) and goes up and between the first end being positioned at described first branch road (300) and described outdoor heat exchanger (20).
2. air-conditioner according to claim 1, it is characterized in that, described air-conditioner also comprises throttle part (60), second branch road (400) and pressure-regulating valve (70), described throttle part (60) is arranged on described second pipeline (200) and goes up and between the second end being positioned at described first branch road (300) and described indoor heat exchanger (30), the first end of described second branch road (400) is connected between the first end of described first branch road (300) and described first valve (40) or between described second valve (50) and described compressor (10), second end of described second branch road (400) is connected between described pressure-regulating valve (70) and described indoor heat exchanger (30), described pressure-regulating valve (70) is arranged on described second branch road (400).
3. air-conditioner according to claim 2, it is characterized in that, described air-conditioner also comprises the 3rd valve (80), described 3rd valve (80) is arranged between described first valve (40) and the second end of described first branch road (300), described 3rd valve (80) is check valve, and the flow direction of described 3rd valve (80) is second end of described first valve (40) to described first branch road (300).
4. air-conditioner according to claim 2, it is characterized in that, described second valve (50) is check valve, and the flow direction of described second valve (50) is that the first end of the first branch road (300) is to described outdoor heat exchanger (20).
5. air-conditioner according to claim 2, is characterized in that, described first valve (40) is magnetic valve.
6. the air-conditioner according to any one of claim 2 to 5, it is characterized in that, described air-conditioner also comprises oil eliminator, described oil eliminator is arranged between the first end being exported to described first branch road (300) of described compressor (10), and the isolated oil of described oil eliminator is back to the entrance of described compressor.
7. the air-conditioner according to any one of claim 2 to 5, it is characterized in that, described air-conditioner also comprises gas-liquid separator, and described gas-liquid separator is arranged on the pipeline between the outlet of described indoor heat exchanger (30) and described compressor (10) entrance.
8. the air-conditioner according to any one of claim 2 to 5, is characterized in that, described outdoor heat exchanger (20) is water cooling heat exchanger.
9. a control method for air-conditioner, is characterized in that, described air-conditioner is air-conditioner according to claim 1, and the control method of described air-conditioner comprises:
Obtain the Current Temperatures of the indoor heat exchanger (30) of air-conditioner;
According to the Current Temperatures of the indoor heat exchanger (30) of described air-conditioner, judge whether first valve (40) of described air-conditioner meets the condition opened;
If the condition opened described in described first valve (40) meets, then open described first valve (40).
10. a control method for air-conditioner, is characterized in that, the air-conditioner of described air-conditioner according to any one of claim 2 to 8, and the control method of described air-conditioner comprises:
Obtain the Current Temperatures of the indoor heat exchanger (30) of air-conditioner;
According to the Current Temperatures of the indoor heat exchanger (30) of described air-conditioner, judge whether first valve (40) of described air-conditioner meets the condition opened;
If the condition opened described in described first valve (40) meets, then open described first valve (40).
11. control methods according to claim 10, is characterized in that, according to the Current Temperatures of the indoor heat exchanger (30) of described air-conditioner, judge that whether described first valve (40) of described air-conditioner meets and open condition and comprise:
When the Current Temperatures of described indoor heat exchanger (30) is less than or equal to the first preset temperature, judges that described first valve (40) opens condition described in meeting, then open described first valve (40);
When the Current Temperatures of described indoor heat exchanger (30) is greater than the first preset temperature and is less than or equal to the second preset temperature, then based on the Current Temperatures of system high pressure side judge first valve (40) of described air-conditioner whether meet described in the condition opened;
When the Current Temperatures of described indoor heat exchanger (30) is greater than described second preset temperature, judge that described first valve (40) opens condition described in not meeting, then described first valve (40) is closed.
12. control methods according to claim 11, is characterized in that, based on the Current Temperatures of described system high pressure side judge first valve (40) of described air-conditioner whether meet described in the condition opened comprise:
When the Current Temperatures of described system high pressure side is less than or equal to the 3rd preset temperature, judges that described first valve (40) opens condition described in meeting, then open described first valve (40);
When the Current Temperatures that described 3rd preset temperature is less than described system high pressure side is less than or equal to the 4th preset temperature, described first valve (40) maintains standing state;
When described 4th preset temperature is less than described system high pressure side, judge that described first valve (40) opens condition described in not meeting, described first valve (40) is closed.
13. control methods according to claim 11, it is characterized in that, when the Current Temperatures of described indoor heat exchanger (30) is greater than described second preset temperature, and when the Current Temperatures of described system high pressure side is greater than described second preset temperature, described second valve (50) is closed, and the pressure-regulating valve (70) of described air-conditioner is opened.
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| CN201511034561.4A CN105570988B (en) | 2015-12-31 | 2015-12-31 | Air conditioner and its control method |
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| CN201511034561.4A CN105570988B (en) | 2015-12-31 | 2015-12-31 | Air conditioner and its control method |
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| CN105570988B CN105570988B (en) | 2018-12-11 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482378A (en) * | 2016-10-19 | 2017-03-08 | 广东美的制冷设备有限公司 | Air conditioning system and its control method |
| CN110793159A (en) * | 2019-11-19 | 2020-02-14 | 宁波奥克斯电气股份有限公司 | Air conditioner refrigeration anti-freezing protection control method and device and air conditioner |
| CN111306852A (en) * | 2020-02-26 | 2020-06-19 | 珠海格力电器股份有限公司 | Air conditioning system for preventing heat exchanger from frosting and control method thereof |
| CN111442503A (en) * | 2020-04-09 | 2020-07-24 | 宁波奥克斯电气股份有限公司 | Control method and device for outdoor fan of air conditioner and air conditioner |
| EP3620724A4 (en) * | 2017-05-17 | 2020-12-02 | Qingdao Haier Air Conditioner General Corp., Ltd. | Control method and device for air conditioner |
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| EP3620724A4 (en) * | 2017-05-17 | 2020-12-02 | Qingdao Haier Air Conditioner General Corp., Ltd. | Control method and device for air conditioner |
| CN110793159A (en) * | 2019-11-19 | 2020-02-14 | 宁波奥克斯电气股份有限公司 | Air conditioner refrigeration anti-freezing protection control method and device and air conditioner |
| CN110793159B (en) * | 2019-11-19 | 2021-10-26 | 宁波奥克斯电气股份有限公司 | Air conditioner refrigeration anti-freezing protection control method and device and air conditioner |
| CN111306852A (en) * | 2020-02-26 | 2020-06-19 | 珠海格力电器股份有限公司 | Air conditioning system for preventing heat exchanger from frosting and control method thereof |
| CN111442503A (en) * | 2020-04-09 | 2020-07-24 | 宁波奥克斯电气股份有限公司 | Control method and device for outdoor fan of air conditioner and air conditioner |
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