CN111947242B - Control method of outdoor unit and air conditioning system - Google Patents

Control method of outdoor unit and air conditioning system Download PDF

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Publication number
CN111947242B
CN111947242B CN202010858599.8A CN202010858599A CN111947242B CN 111947242 B CN111947242 B CN 111947242B CN 202010858599 A CN202010858599 A CN 202010858599A CN 111947242 B CN111947242 B CN 111947242B
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CN
China
Prior art keywords
outdoor unit
electromagnetic valve
control method
refrigerant
compressor
Prior art date
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Active
Application number
CN202010858599.8A
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Chinese (zh)
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CN111947242A (en
Inventor
张仕强
陈敏
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Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
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Priority to CN202010858599.8A priority Critical patent/CN111947242B/en
Publication of CN111947242A publication Critical patent/CN111947242A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61Control or safety arrangements characterised by user interfaces or communication using timers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control 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
    • F24F11/84Control 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/88Electrical aspects, e.g. circuits

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a control method of an outdoor unit and an air conditioning system. The outdoor unit includes: a compressor; a housing provided outside the compressor; the gas-liquid separator is provided with a first communication port and a second communication port which are distributed along the height direction of the gas-liquid separator, and the gas-liquid separator is communicated with the shell through the first communication port and the second communication port; and an air outlet of the gas-liquid separator is communicated with an air suction port of the compressor. According to the control method of the outdoor unit and the air conditioning system, provided by the invention, the shell is arranged and is communicated with the gas-liquid separator, so that the separation effect of the gas-liquid separator is controlled by utilizing the waste heat of the compressor, and the refrigerating capacity in the air conditioning system is controlled by utilizing the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the flow regulating mechanism, so that the refrigerant filling capacity in the air conditioning system can be increased, and the scene suitable for the configuration rate of a larger indoor unit and an outdoor unit is increased.

Description

Control method of outdoor unit and air conditioning system
Technical Field
The invention relates to the technical field of air treatment equipment, in particular to a control method of an outdoor unit and an air conditioning system.
Background
In the current air conditioning system, a key component compressor generates a large amount of heat in the compression process, so that the temperature of a compressor shell is higher, the heat is in a waste state, and in the multi-split air conditioning system, the refrigerant flow of the system is affected due to the non-stationarity of the matching of an outdoor unit and an indoor unit, and finally the condition of inconsistent circulating refrigerant quantity requirement of a refrigerating and heating mode can be caused.
Disclosure of Invention
In order to solve the technical problems that the compressor has waste heat and the refrigerant amount in the system cannot be adjusted in the prior art, the control method of the outdoor unit and the air conditioning system for adjusting the refrigerant amount in the air conditioning system where the outdoor unit is positioned by utilizing the waste heat of the compressor are provided.
An outdoor unit, comprising:
A compressor;
a housing provided outside the compressor;
The gas-liquid separator is provided with a first communication port and a second communication port which are distributed along the height direction of the gas-liquid separator, and the gas-liquid separator is communicated with the shell through the first communication port and the second communication port;
and an air outlet of the gas-liquid separator is communicated with an air suction port of the compressor.
The first communication port is positioned above the liquid level in the gas-liquid separator, and the second communication port is positioned below the liquid level in the gas-liquid separator.
The outdoor unit further comprises an air return pipe which is communicated with the indoor unit, the air return pipe is communicated with the air suction port of the compressor through a first pipeline, and the air return pipe is communicated with the air inlet of the gas-liquid separator through a second pipeline.
The first pipeline is provided with a first electromagnetic valve, the second pipeline is provided with a second electromagnetic valve, and a third electromagnetic valve is arranged between the air outlet and the air suction port.
And a flow regulating mechanism is arranged between the second communication port and the shell.
In the above-mentioned control method of the outdoor unit, a flow adjusting mechanism is disposed between the second communication port and the casing, and the control method includes:
In the refrigerant recovery mode, the flow regulating mechanism and the first electromagnetic valve are closed, the second electromagnetic valve and the third electromagnetic valve are opened, and the refrigerant in the muffler enters the gas-liquid separator through the second electromagnetic valve and is separated and stored.
Further comprises:
in the refrigerant regulation mode, the first electromagnetic valve is opened, the flow regulation mechanism, the second electromagnetic valve and the third electromagnetic valve are closed, and the refrigerant in the muffler enters the air suction port of the compressor through the first electromagnetic valve.
Further comprises:
In the refrigerant supplementing mode, the third electromagnetic valve and the first electromagnetic valve are opened, the second electromagnetic valve is closed, the flow regulating mechanism is opened, and the refrigerant in the gas-liquid separator enters the air suction port of the compressor through the third electromagnetic valve.
The control method further includes:
Acquiring an air conditioning system quantity a1 in an air conditioning system where an outdoor unit is located, acquiring an actual circulation quantity a2 of the air conditioning system in real time, and comparing the a1 with the a2;
if a2 is more than a1, controlling the outdoor unit to switch to the refrigerant recovery mode;
If a1=a2, keeping the outdoor unit in the air conditioning system mode;
and if a1 > a2, controlling the outdoor unit to switch to the refrigerant supplementing mode.
Setting a first set time value t1;
after the outdoor unit is in the refrigerant recovery mode t1 for a time, the outdoor unit is switched to the air conditioning system mode.
Step S1, setting a unit opening degree adjustment degree m of a flow rate adjustment mechanism and a second set time t2;
step S2, when the outdoor unit is switched to a refrigerant supplementing mode, the opening degree of the primary flow regulating mechanism is regulated according to m;
step S3, comparing a1 with a2 again after the second setting time t2 is continued, if a1 > a2, repeating step S2 until a1=a2.
The compressor has a normal operating frequency f1 and a refrigerant recovery frequency f2, f1 < f2;
When the outdoor unit is switched to the refrigerant recovery mode, the compressor is switched to the refrigerant recovery frequency;
when the outdoor unit is in the refrigerant supplement mode or the air conditioning system mode, the compressor is at the normal operating frequency f1.
An air conditioning system comprises the outdoor unit.
According to the control method of the outdoor unit and the air conditioning system, provided by the invention, the shell is arranged and is communicated with the gas-liquid separator, so that the separation effect of the gas-liquid separator is controlled by utilizing the waste heat of the compressor, and the refrigerating capacity in the air conditioning system is controlled by utilizing the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the flow regulating mechanism, so that the refrigerant filling capacity in the air conditioning system can be increased, and the scene suitable for the configuration rate of a larger indoor unit and an outdoor unit is increased.
Drawings
Fig. 1 is a schematic structural diagram of a refrigeration process of an outdoor unit according to an embodiment of an air conditioning system and a control method of the outdoor unit according to the present invention;
fig. 2 is a schematic structural diagram of a heating process of an outdoor unit according to an embodiment of the present invention and a control method of the outdoor unit;
fig. 3 is a control flow chart of an outdoor unit according to an embodiment of the present invention;
In the figure:
1. A compressor; 2. a housing; 3. a gas-liquid separator; 31. a first communication port; 32. a second communication port; 33. an air outlet; 11. an air suction port; 4. an air return pipe; 5. a first electromagnetic valve; 6. a second electromagnetic valve; 7. a third electromagnetic valve; 8. a flow rate adjusting mechanism.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The outdoor unit as shown in fig. 1 to 3 includes: a compressor 1; a casing 2 provided outside the compressor 1, that is, the waste heat of the compressor 1 is collected by the casing 2, and preferably, the compressor 1 has an inner casing and an outer casing, and the outer casing forms the casing 2; the gas-liquid separator 3 has a first communication port 31 and a second communication port 32 arranged along the height direction of the gas-liquid separator 3, the gas-liquid separator 3 is communicated with the shell 2 through the first communication port 31 and the second communication port 32, the liquid refrigerant in the gas-liquid separator 3 can enter the shell 2 through the second communication port 32, and after the waste heat of the compressor 1 is absorbed in the shell 2, the liquid refrigerant flows back into the gas-liquid separator 3 from the first communication port 31; the gas outlet 33 of the gas-liquid separator 3 communicates with the suction port 11 of the compressor 1, so that the gaseous refrigerant in the gas-liquid separator 3 is sent to the compressor 1 for circulation.
The first communication port 31 is located above the liquid level in the gas-liquid separator 3, and the second communication port 32 is located below the liquid level in the gas-liquid separator 3, so that the heat exchange efficiency of the shell 2 is prevented from being affected due to the fact that liquid refrigerant enters the first communication port 31, and meanwhile, the fact that the liquid refrigerant can enter the shell 2 for heat exchange can be guaranteed at the second communication port 32 all the time.
The outdoor unit further comprises an air return pipe 4 which is communicated with the indoor unit, the air return pipe 4 is communicated with the air suction port 11 of the compressor 1 through a first pipeline, the air return pipe 4 is communicated with the air inlet of the gas-liquid separator 3 through a second pipeline, namely, the air return of the air return pipe 4 can directly enter the air suction port 11 of the compressor 1 through the first pipeline, and can also enter the gas-liquid separator 3 through the second pipeline to perform gas-liquid separation.
The first pipeline is provided with a first electromagnetic valve 5, the second pipeline is provided with a second electromagnetic valve 6, a third electromagnetic valve 7 is arranged between the air outlet 33 and the air suction port 11, the first electromagnetic valve 5 controls whether the refrigerant can circulate in the first pipeline, the second electromagnetic valve 6 controls whether the refrigerant can flow in the second pipeline, and the third electromagnetic valve 7 can control whether the gaseous refrigerant in the gas-liquid separator 3 flows into the air suction port 11 of the compressor 1.
A flow rate adjusting mechanism 8 is disposed between the second communication port 32 and the housing 2, and the opening of the flow rate adjusting mechanism can be adjusted from 0 to the maximum, and the amount of the refrigerant entering the housing 2 is controlled according to the opening adjustment of the flow rate adjusting mechanism 8, so as to control whether the refrigerant is stored in the gas-liquid separator 3 or enters the housing 2 to absorb heat.
In the above-mentioned control method of the outdoor unit, a flow rate adjusting mechanism 8 is provided between the second communication port 32 and the casing 2, and the control method includes:
In the refrigerant recovery mode, the flow regulating mechanism 8 and the first electromagnetic valve 5 are closed, the second electromagnetic valve 6 and the third electromagnetic valve 7 are opened, the refrigerant in the air return pipe 4 enters the gas-liquid separator 3 through the second electromagnetic valve 6 and is separated and stored, the gaseous refrigerant separated in the gas-liquid separator 3 flows to the air suction port of the compressor 1 through the air outlet 33, and the liquid refrigerant is stored in the gas-liquid separator 3.
Further comprises:
In the refrigerant adjusting mode, the first solenoid valve 5 is opened, the flow adjusting mechanism 8, the second solenoid valve 6 and the third solenoid valve 7 are closed, and the refrigerant in the muffler 4 enters the suction port 11 of the compressor 1 through the first solenoid valve 5 without entering the gas-liquid separator 3.
Further comprises:
In the refrigerant replenishing mode, the third electromagnetic valve 7 and the first electromagnetic valve 5 are opened, the second electromagnetic valve 6 is closed, the flow regulating mechanism 8 is opened, and the refrigerant in the gas-liquid separator 3 enters the air suction port 11 of the compressor 1 through the third electromagnetic valve 7, so that the refrigerant in the muffler 4 and the refrigerant stored in the gas-liquid separator 3 can enter the air suction port 11 of the compressor 1 to replenish the amount of the refrigerant in the air conditioning cycle.
The control method further includes:
Acquiring an air conditioning system quantity a1 in an air conditioning system where an outdoor unit is located, acquiring an actual circulation quantity a2 of the air conditioning system in real time, and comparing the a1 with the a2;
if a2 is more than a1, controlling the outdoor unit to switch to the refrigerant recovery mode;
If a1=a2, keeping the outdoor unit in the air conditioning system mode;
and if a1 > a2, controlling the outdoor unit to switch to the refrigerant supplementing mode.
The control method further comprises the steps of setting a first set time value t1;
After the outdoor unit is in the refrigerant recovery mode t1 for a time, the outdoor unit is switched to the air conditioning system mode, thereby avoiding damage to the compressor 1 and avoiding a problem of excessive reduction in the amount of refrigerant in the air conditioning system.
The control method further includes: step S1, setting a unit opening degree adjustment m of a flow rate adjustment mechanism 8 and a second setting time t2;
step S2, when the outdoor unit is switched to the refrigerant supplementing mode, the opening degree of the primary flow regulating mechanism 8 is regulated according to m, namely, when the outdoor unit is switched to the refrigerant supplementing mode, the opening degree of the flow regulating mechanism 8 is regulated to the value of m;
step S3, comparing a1 with a2 again after the second setting time t2 is continued, if a1 > a2, repeating step S2 until a1=a2, that is, comparing a1 with a2 again after the time t2 is added to the refrigerant, when a1 is still greater than a2, indicating that the opening degree of the flow rate adjusting mechanism 8 is insufficient, the amount of the refrigerant in the air conditioning system is still insufficient, and continuing to supplement, if the opening degree of the flow rate adjusting mechanism 8 is increased by m, then comparing again until the amount of the refrigerant in the air conditioning system is sufficient.
The compressor 1 has a normal operating frequency f1 and a refrigerant recovery frequency f2, f1 < f2;
When the outdoor unit is switched to the refrigerant recovery mode, the compressor 1 is switched to the refrigerant recovery frequency f2;
when the outdoor unit is in the refrigerant supplement mode or the air conditioning system mode, the compressor 1 is at the normal operating frequency f1.
The air conditioning system further comprises an indoor throttling mechanism and an outdoor throttling mechanism, and when the outdoor unit is switched to a refrigerant recovery mode, the indoor throttling mechanism and the outdoor throttling mechanism are both regulated to be maximum; when the outdoor unit exits the refrigerant recovery mode, the indoor throttle mechanism and the outdoor throttle mechanism resume normal regulation.
An air conditioning system comprises the outdoor unit.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. A control method of an outdoor unit is characterized in that: the outdoor unit includes:
a compressor (1);
a housing (2) provided outside the compressor (1);
A gas-liquid separator (3) having a first communication port (31) and a second communication port (32) arranged in a height direction of the gas-liquid separator (3), the gas-liquid separator (3) being in communication with the housing (2) through the first communication port (31) and the second communication port (32);
an air outlet (33) of the air-liquid separator (3) is communicated with an air suction port (11) of the compressor (1);
The outdoor unit further comprises an air return pipe (4) which is communicated with the indoor unit, the air return pipe (4) is communicated with an air suction port (11) of the compressor (1) through a first pipeline, and the air return pipe (4) is communicated with an air inlet of the gas-liquid separator (3) through a second pipeline;
A first electromagnetic valve (5) is arranged on the first pipeline, a second electromagnetic valve (6) is arranged on the second pipeline, and a third electromagnetic valve (7) is arranged between the air outlet (33) and the air suction port (11);
A flow regulating mechanism (8) is arranged between the second communication port (32) and the shell (2), and the control method comprises the following steps:
In the refrigerant recovery mode, the flow regulating mechanism (8) and the first electromagnetic valve (5) are closed, the second electromagnetic valve (6) and the third electromagnetic valve (7) are opened, and the refrigerant in the air return pipe (4) enters the gas-liquid separator (3) through the second electromagnetic valve (6) and is separated and stored.
2. The control method according to claim 1, characterized in that: the first communication port (31) is positioned above the liquid level in the gas-liquid separator (3), and the second communication port (32) is positioned below the liquid level in the gas-liquid separator (3).
3. The control method according to claim 1, characterized in that: the control method further includes:
in the refrigerant regulation mode, the first electromagnetic valve (5) is opened, the flow regulation mechanism (8), the second electromagnetic valve (6) and the third electromagnetic valve (7) are closed, and the refrigerant in the muffler (4) enters the air suction port (11) of the compressor (1) through the first electromagnetic valve (5).
4. A control method according to claim 3, characterized in that: the control method further includes:
In the refrigerant supplementing mode, the third electromagnetic valve (7) and the first electromagnetic valve (5) are opened, the second electromagnetic valve (6) is closed, the flow regulating mechanism (8) is opened, and the refrigerant in the gas-liquid separator (3) enters the air suction port (11) of the compressor (1) through the third electromagnetic valve (7).
5. The control method according to claim 4, characterized in that: the control method further includes:
Acquiring an air conditioning system quantity a1 in an air conditioning system where an outdoor unit is located, acquiring an actual circulation quantity a2 of the air conditioning system in real time, and comparing the a1 with the a2;
if a2 is more than a1, controlling the outdoor unit to switch to the refrigerant recovery mode;
If a1=a2, keeping the outdoor unit in the air conditioning system mode;
and if a1 > a2, controlling the outdoor unit to switch to the refrigerant supplementing mode.
6. The control method according to claim 5, characterized in that:
Setting a first set time value t1;
after the outdoor unit is in the refrigerant recovery mode t1 for a time, the outdoor unit is switched to the air conditioning system mode.
7. The control method according to claim 5, characterized in that:
step S1, setting a unit opening degree adjustment degree m of a flow rate adjustment mechanism (8) and a second setting time t2;
step S2, when the outdoor unit is switched to a refrigerant supplementing mode, the opening degree of the primary flow regulating mechanism (8) is regulated according to m;
step S3, comparing a1 with a2 again after the second setting time t2 is continued, if a1 > a2, repeating step S2 until a1=a2.
8. The control method according to claim 5, characterized in that: the compressor (1) has a normal operating frequency f1 and a refrigerant recovery frequency f2, f1 < f2;
When the outdoor unit is switched to the refrigerant recovery mode, the compressor (1) is switched to the refrigerant recovery frequency;
when the outdoor unit is in a refrigerant supplement mode or an air conditioning system mode, the compressor (1) is at a normal operating frequency f1.
9. The control method according to claim 5, characterized in that: the air conditioning system with the outdoor unit further comprises an indoor throttling mechanism and an outdoor throttling mechanism, when the outdoor unit is switched to a refrigerant recovery mode, the indoor throttling mechanism and the outdoor throttling mechanism are both adjusted to the maximum opening degree, and when the outdoor unit exits from the refrigerant recovery mode, the indoor throttling mechanism and the outdoor throttling mechanism are both restored to conventional adjustment.
10. An air conditioning system, characterized in that: a control method using the outdoor unit according to any one of claims 1 to 9.
CN202010858599.8A 2020-08-24 2020-08-24 Control method of outdoor unit and air conditioning system Active CN111947242B (en)

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CN202010858599.8A CN111947242B (en) 2020-08-24 2020-08-24 Control method of outdoor unit and air conditioning system

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Application Number Priority Date Filing Date Title
CN202010858599.8A CN111947242B (en) 2020-08-24 2020-08-24 Control method of outdoor unit and air conditioning system

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CN111947242B true CN111947242B (en) 2024-05-03

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010106976A (en) * 2000-05-24 2001-12-07 구자홍 A separative air-conditioner
CN103673138A (en) * 2013-12-27 2014-03-26 Tcl空调器(中山)有限公司 Air conditioner and control method thereof
CN203572110U (en) * 2013-10-10 2014-04-30 广东美的集团芜湖制冷设备有限公司 Air conditioning system
CN203704154U (en) * 2014-02-17 2014-07-09 深圳市西谷制冷设备有限公司 Constant temperature and humidity set
CN206269278U (en) * 2016-10-31 2017-06-20 广东美的制冷设备有限公司 Air-source heat pump air conditioning system and the air-conditioning comprising it
CN108826536A (en) * 2018-03-14 2018-11-16 深圳华中科技大学研究院 The air conditioner unit of not stopping function is heated with defrosting
CN212339461U (en) * 2020-08-24 2021-01-12 珠海格力电器股份有限公司 Outdoor unit and air conditioning system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010106976A (en) * 2000-05-24 2001-12-07 구자홍 A separative air-conditioner
CN203572110U (en) * 2013-10-10 2014-04-30 广东美的集团芜湖制冷设备有限公司 Air conditioning system
CN103673138A (en) * 2013-12-27 2014-03-26 Tcl空调器(中山)有限公司 Air conditioner and control method thereof
CN203704154U (en) * 2014-02-17 2014-07-09 深圳市西谷制冷设备有限公司 Constant temperature and humidity set
CN206269278U (en) * 2016-10-31 2017-06-20 广东美的制冷设备有限公司 Air-source heat pump air conditioning system and the air-conditioning comprising it
CN108826536A (en) * 2018-03-14 2018-11-16 深圳华中科技大学研究院 The air conditioner unit of not stopping function is heated with defrosting
CN212339461U (en) * 2020-08-24 2021-01-12 珠海格力电器股份有限公司 Outdoor unit and air conditioning system

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