CN100473915C - Multiple air conditioner system and operation and control method thereof - Google Patents
Multiple air conditioner system and operation and control method thereof Download PDFInfo
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- CN100473915C CN100473915C CNB2005101049548A CN200510104954A CN100473915C CN 100473915 C CN100473915 C CN 100473915C CN B2005101049548 A CNB2005101049548 A CN B2005101049548A CN 200510104954 A CN200510104954 A CN 200510104954A CN 100473915 C CN100473915 C CN 100473915C
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- indoor set
- temperature
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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
- 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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- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- 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
- F24F11/64—Electronic processing using pre-stored data
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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
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0314—Temperature sensors near the indoor heat exchanger
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to a refrigeration/warming multiple air conditioner system wherein one outdoor unit is connected with several indoor units and its operation and control method, in particular relates to a multiple air conditioner system wherein the running state of the indoor unit is transmitted to the outdoor unit by compressor signal and its operation and control method. Therefore, the invention provides a multiple air conditioner system wherein one outdoor unit is connected with several indoor units, the air conditioner system is characterized in that, it comprises: an electromotive valve adjusting the refrigerant flow into the indoor units; a signal part receiving the compressor signal from at least one indoor unit and transmitting the running state of the indoor unit to the outdoor unit; a control part controlling the opening degree of the electromotive valve based on the running state of the indoor transmitted together with the compressor signal.
Description
Technical field
The present invention relates to a kind of multi-air-conditioner that on an off-premises station, connects the cooling and warming dual-purpose of many indoor sets, relate in particular to a kind of signal compressor that utilizes the running status of indoor set is communicated to the multi-air-conditioner and the progress control method thereof of off-premises station, can suitably control refrigerant flow in the indoor set with this.
Background technology
Usually, air-conditioning is to be used to carry out indoor refrigeration or the device that heats, by making cold-producing medium mutual circulation between indoor set and off-premises station, and absorb the characteristic of discharging its heat when ambient heat is liquefied when being gasified according to liquid refrigerant and carry out refrigeration or heat effect, the refrigeration of air conditioner or the effect that heats are determined by the loop direction of its cold-producing medium.
Air conditioner commonly used generally is provided with an indoor set at an off-premises station, but the user more and more increases for connect the demand that has many (for example two) indoor sets of mutually different form (vertical or wall-hanging) and capacity and be arranged on family's multi type air conditioner (Multi-system airconditioner) of home dwelling such as apartment at an off-premises station recently.
This multi type air conditioner has two compressors of different capabilities, and only realizes between vertical indoor set and off-premises station that communication just can move.Realizing between vertical indoor set and the off-premises station under the state of communication,, then optionally moving two compressors according to condition at this moment if receive the opening signal of wall-hanging compression machine.
But, because this existing multi type air conditioner is not being realized between wall indoor unit and the off-premises station under the state of communication realizing communication between vertical indoor set and the off-premises station, an ON/OFF signal with compressor is communicated to off-premises station in wall indoor unit, thereby off-premises station is not understood the running status of wall indoor unit, therefore when refrigeration (or heating) scarce capacity of wall indoor unit, also can't regulate the refrigerant flow that flows to indoor set.
And, owing to do not understand the running status of wall indoor unit, thus compressor can not stably be controlled at off-premises station, and when wall indoor unit connects by long pipe arrangement, the problem that exists refrigeration (or heating) ability to reduce.
Summary of the invention
The present invention proposes in order to solve aforesaid problem, its purpose is to provide a kind of ON/OFF signal that does not need other telecommunication circuit and utilize compressor that the running status of wall indoor unit is communicated to off-premises station, thereby can control the multi-air-conditioner and the progress control method thereof of off-premises station more effectively.
Another object of the present invention is to provide a kind of refrigeration (or heating) capability state to regulate the refrigerant flow of indoor set, can improve the multi-air-conditioner and the progress control method thereof of cooling and warming performance with this by the detection wall indoor unit.
To achieve these goals, the multi-air-conditioner at many indoor sets of an off-premises station connection provided by the present invention is characterized in that comprising: the motor-driven valve that is used to regulate the refrigerant flow that flows into described many indoor sets; Be used for the signal compressor that at least one indoor set sent of described many indoor sets and the running status that is stated from the indoor set of described signal compressor are communicated to the signal section of off-premises station; Running status according to the indoor set of passing on by described signal section with signal compressor, by comparing the service ability that detects described indoor set, and control the control part of the opening degree of described motor-driven valve according to the service ability of described detected indoor set with the fiducial temperature rate of change.
And, further comprise the indoor temperature transmitter that is used to respond to the indoor air temperature that is drawn into described each indoor set, described control part calculates the indoor temperature change generated in case rate of being responded to, and the indoor temperature change generated in case rate calculated compared with predetermined fiducial temperature rate of change, detect the service ability of indoor set then according to its comparative result.
And, further comprising to be used to respond to makes the room air that is drawn into described each indoor set carry out the temperature sensor of the heat exchanger of heat exchange, described control part calculates the rate of change of the heat exchanger temperature of being responded to, and the heat exchanger temperature rate of change that calculated compared with predetermined fiducial temperature rate of change, detect the service ability of indoor set then according to its comparative result.
And described control part is controlled the opening degree of motor-driven valve according to the service ability of the indoor set that is detected, and flows into more cold-producing medium in order to the indoor set to the service ability deficiency, thereby the service ability of indoor set is changed.
Provided by the present inventionly connect the control method of the multi-air-conditioner of many indoor sets, comprise step: will be communicated to off-premises station by signal compressor that at least one indoor set sent in described many indoor sets and the running status that is stated from the indoor set of described signal compressor at off-premises station; Running status according to the indoor set of passing on described signal compressor, by comparing the service ability that detects described indoor set, and regulate the refrigerant flow that flows into described many indoor sets according to the service ability of described detected indoor set with the fiducial temperature rate of change.
And, further comprise the step that induction is drawn into the indoor air temperature of described each indoor set, and described adjusting flows into the step of the refrigerant flow of described many indoor sets and is: the rate of change that calculates the indoor temperature of being responded to, and the indoor temperature change generated in case rate calculated compared with predetermined fiducial temperature rate of change, detect the service ability of indoor set then according to its comparative result, and flow into more cold-producing medium to the indoor set of service ability deficiency.
And, further comprising induction makes the room air that is drawn into each indoor set carry out the step of the heat exchanger temperature of heat exchange, and described adjusting flows into the step of the refrigerant flow of described many indoor sets and is: the rate of change that calculates the heat exchanger temperature of being responded to, and the rate of temperature change of the heat exchanger that calculated compared with predetermined fiducial temperature rate of change, detect the service ability of indoor set then according to its comparative result, and flow into more cold-producing medium to the indoor set of service ability deficiency.
Description of drawings
The refrigerant flow path schematic diagram of the multi-air-conditioner that Fig. 1 is provided for foundation an embodiment of the present invention;
Fig. 2 constitutes schematic diagram for the control of the multi-air-conditioner that foundation an embodiment of the present invention is provided;
Fig. 3 is the workflow diagram according to the progress control method of multi-air-conditioner provided by the present invention.
The specific embodiment
Below, the embodiment that present invention will be described in detail with reference to the accompanying.
The refrigerant flow path schematic diagram of the multi-air-conditioner that Fig. 1 is provided for foundation an embodiment of the present invention can be carried out refrigeration or heats according to the flow direction of cold-producing medium, is that the center is illustrated with the cold-producing medium circulation among the present invention.
Among Fig. 1, multi-air-conditioner provided by the present invention comprises an off-premises station 10, first indoor set 50 (vertical indoor set) that is connected in off-premises station 10 and second indoor set 70 (wall indoor unit) of common formation cold-producing medium circulation.
Described off-premises station 10 comprises: compressor 12a, 12b are used for the gaseous state with cold-producing medium boil down to HTHP; Cross valve 14 is used for the flow direction of regulating the vaporous cold-producing medium of HTHP that is compressed by described compressor 12a, 12b according to operational mode (freeze or heat); Outdoor heat converter 16 is used to receive the high-temperature high-pressure gas refrigerant that compressed by described compressor 12a, 12b and carries out heat exchange with outdoor air; Outdoor fan 18 is used for exhaust plenum's outer air by outdoor fan motor 20, makes described outdoor heat converter 16 realize heat exchange; Capillary 22 is used for the cold-producing medium of puffing heat exchange.
The suction side of described compressor 12a, 12b comprises the storage 24 that the cold-producing medium that is used for flowing into compressor 12a, 12b is transformed to gaseous state fully.
And, be connected in the solenoid valve 28 of regulating the electric expansion valve 26 (EEV:Electronic Expansion Valve is hereinafter to be referred as motor-driven valve) of the refrigerant flow that flows into first and second indoor sets 50,70 and being used for supplying or cutting off inflow first and second indoor sets 50,70 second indoor set 70 cold-producing mediums of being used to that discharging refrigerant outlet side when being positioned at refrigerating operaton is set in the pipe arrangement of described outdoor heat converter 16.
Described first and second indoor set 50,70 comprises: first and second indoor heat converter 52,72 is used to receive cold-producing medium and carries out heat exchange with room air; First and second indoor fan 56,76 is used for by first and second indoor fan motor 54,74 air in the exhaust plenum, makes described first and second indoor heat converter 52,72 realize heat exchange.
And, be provided for responding to the indoor heat converter temperature sensor 58,78 of the pipe arrangement temperature of first and second indoor heat converter 52,72 in described first and second indoor heat converter 52,72.
Fig. 2 constitutes schematic diagram for the control of the multi-air-conditioner that foundation an embodiment of the present invention is provided, and off-premises station 10 also comprises except device as shown in fig. 1: Department of Communication Force 30 is used for the data communication between first indoor set 50 and the off-premises station 10; Off-premises station control part 32 is used to control respectively installing of off-premises station 10; Signal compressor acceptance division 34 is used to receive the signal compressor of being passed on by second indoor set 70 and is entered into described off-premises station control part 32.
Described first indoor set 50 also comprises except device as shown in Figure 1: indoor temperature transmitter 60 is used for responding to the indoor air temperature that is drawn into first indoor set 50; The first indoor set control part 62 is used to control the device of first indoor set 50; Department of Communication Force, the running status with first indoor set 50 when being used for carrying out data communication between first indoor set 50 and off-premises station 10 is communicated to off-premises station 10.
Described second indoor set 70 also comprises except device as shown in Figure 1: indoor temperature transmitter 80 is used for responding to the indoor air temperature that is drawn into second indoor set 70; The second indoor set control part 82 is used to control the device of second indoor set 70; Signal compressor reception and registration portion 84 is used for being communicated to off-premises station 10 together with the temperature of the indoor temperature of second indoor set, 70 sides and indoor heat converter and according to the compressor ON/OFF signal that the comparative result of indoor temperature and design temperature produces.
In addition, being provided for the user in described first and second indoor set 50,70 imports selected operational mode (freeze or heat) and design temperature, sets air quantity, sets the button operation portion of operation informations such as wind direction, because this part is identical with existing button operation portion, thereby omits its detailed description.
Below, the course of work and the action effect of aforesaid multi-air-conditioner and progress control method thereof are described.
Fig. 3 is the workflow diagram according to the progress control method of multi-air-conditioner provided by the present invention, relate to realize communication between a kind of first indoor set 50 and the off-premises station 10, and do not realize the operation of family's multi type air conditioner of communication between second indoor set 70 and the off-premises station 10.
At first,, confirm the running status of first indoor set 50 when then the off-premises station control part 32 and the first indoor set control part carry out data communication, judge whether to be bring into operation (S100) if connect power supply to off-premises station 10.
If bring into operation (YES), then off-premises station 10 selects optionally to move two compressor 12a, 12b (S110) by the communication between first indoor set 50 and the off-premises station 10 according to the operation of first indoor set 50.
At this moment, in second indoor set 70, utilize signal compressor that the running status (refrigeration, dehumidifying, indoor temperature, indoor heat converter temperature etc.) of second indoor set 70 is communicated to off-premises station 10, off-premises station 10 receives the signal compressor of being passed on by the signal compressor reception and registration portion 84 of second indoor set 70 by signal compressor acceptance division 34, thereby grasps the running status (S120) of second indoor set 70.
Promptly, the signal compressor of second indoor set 70 not direct drive compression machine 12a, 12b, and the AC signal is transformed to the DC signal and is communicated to off-premises station control part 32, thereby off-premises station control part 32 receives the signal compressor of second indoor set 70 and drive compression machine 12a, 12b.
Therefore, second indoor set 70 is by the certain signal of signal compressor reception and registration portion 84 to signal compressor carrying that is communicated to control part 32 as forms such as " ocos-pass ", thereby the running status (for example, temperature or indoor heat converter temperature in the second indoor set side room) of second indoor set 70 can be communicated to off-premises station 10.
Therefore, off-premises station control part 32 receives the running status of first indoor set of passing on by Department of Communication Force 64 50 and passes through the running status of second indoor set 70 that signal compressor acceptance division 34 imports, thereby can control the operation (S130) of the first and second compressor 12a, 12b smoothly.
Then, off-premises station control part 32 calculates the indoor temperature change generated in case rate of second indoor set of importing by signal compressor acceptance division 34 70 or the rate of temperature change of indoor heat converter, thereby the refrigerating capacity (service ability) that can detect second indoor set 70 (S140).
Described off-premises station control part 32 calculates the tendency of the indoor temperature that changes along with the operation of compressor 12a, 12b, i.e. indoor temperature change generated in case rate; Or the tendency of the interior heat exchanger temperature of counting chamber, the i.e. rate of temperature change of indoor heat converter.Then, the rate of temperature change of the indoor temperature change generated in case rate calculated or indoor heat converter is compared with predetermined fiducial temperature rate of change, thereby detect the refrigerating capacity (service ability) of second indoor set 70.
When the refrigerating capacity of described second indoor set 70 detected, then off-premises station control part 32 is controlled the opening degree of motor-driven valve 26 according to the refrigerating capacity of second indoor set 70, thereby can suitably change the refrigerant flow (S150) that flows into first and second indoor sets 50,70.
Therefore, can be in any place central refrigerating in first indoor set 50 or second indoor set 70, perhaps when second indoor set 70 is connected by long pipe arrangement, can be to second indoor set, 70 sides central refrigerating power more.
Then, off-premises station control part 32 continues to check that signal compressor that receives by signal compressor acceptance division 34 and the running status of judging second indoor set 70 change (S160), if the running status of second indoor set 70 changes to some extent, then turn back to described stage S140 and carry out action below the S140 repeatedly.
As mentioned above, according to multi-air-conditioner provided by the present invention and operation method thereof, the ON/OFF signal that does not need other telecommunication circuit and utilize compressor is communicated to off-premises station with the running status of wall indoor unit, thereby can control compressor more effectively at off-premises station.
And the present invention controls the opening degree of motor-driven valve by refrigeration (or heating) capability state that detects wall indoor unit, and can suitably control the refrigerant flow of indoor set thus, therefore has the effect that improves the cooling and warming performance.
Aforesaid content is only in order to illustrate an embodiment according to multi-air-conditioner provided by the present invention and progress control method thereof, but the present invention is not limited to this, for the personnel that the present technique field has common knowledge, in the scope that does not break away from technological thought of the present invention, can carry out various distortion.
Claims (7)
1, connect a kind of multi-air-conditioner of many indoor sets at an off-premises station, it is characterized in that comprising:
Be used to regulate the motor-driven valve of the refrigerant flow that flows into described many indoor sets;
Be used for the signal compressor that at least one indoor set sent of described many indoor sets and the running status that is stated from the indoor set of described signal compressor are communicated to the signal section of off-premises station;
According to the indoor set running status that is communicated by described signal section with signal compressor, by comparing the service ability that detects described indoor set, and control the control part of the opening degree of described motor-driven valve according to the service ability of described detected indoor set with the fiducial temperature rate of change.
2, system according to claim 1, it is characterized in that further comprising the indoor temperature transmitter that is used to respond to the indoor air temperature that is drawn into described each indoor set, described control part calculates the indoor temperature change generated in case rate of being responded to, and the indoor temperature change generated in case rate calculated compared with predetermined fiducial temperature rate of change, detect the service ability of described indoor set then according to its comparative result.
3, system according to claim 1, it is characterized in that further comprising being used to respond to makes the room air that is drawn into described each indoor set carry out the temperature sensor of the heat exchanger of heat exchange, described control part calculates the rate of change of the heat exchanger temperature of being responded to, and the heat exchanger temperature rate of change that calculated compared with predetermined fiducial temperature rate of change, detect the service ability of described indoor set then according to its comparative result.
4, according to claim 2 or 3 described systems, it is characterized in that described control part controls the opening degree of motor-driven valve according to the service ability of the indoor set of described detection, flow into more cold-producing medium in order to indoor set, thereby the service ability of indoor set is changed to the service ability deficiency.
5, connect the control method of a kind of multi-air-conditioner of many indoor sets at an off-premises station, it is characterized in that comprising step:
To be communicated to off-premises station by signal compressor that at least one indoor set sent in described many indoor sets and the running status that is stated from the indoor set of described signal compressor;
Running status according to the indoor set that is communicated with described signal compressor, by comparing the service ability that detects described indoor set, and regulate the refrigerant flow that flows into described many indoor sets according to the service ability of described detected indoor set with the fiducial temperature rate of change.
6, method according to claim 5, it is characterized in that further comprising the step that induction is drawn into the indoor air temperature of described each indoor set, and described adjusting flows into the step of the refrigerant flow of described many indoor sets and is: the rate of change that calculates the indoor temperature of being responded to, and the indoor temperature change generated in case rate calculated compared with predetermined fiducial temperature rate of change, detect the service ability of described indoor set then according to its comparative result, and flow into more cold-producing medium to the indoor set of service ability deficiency.
7, method according to claim 5, it is characterized in that further comprising induction makes the room air that is drawn into each indoor set carry out the step of the heat exchanger temperature of heat exchange, and described adjusting flows into the step of the refrigerant flow of described many indoor sets and is: the rate of change that calculates the heat exchanger temperature of being responded to, and the rate of temperature change of the heat exchanger that calculated compared with predetermined fiducial temperature rate of change, detect the service ability of described indoor set then according to its comparative result, and flow into more cold-producing medium to the indoor set of service ability deficiency.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050076497A KR101195560B1 (en) | 2005-08-19 | 2005-08-19 | A multi air conditioner system and method for controlling operation thereof |
| KR1020050076497 | 2005-08-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1916518A CN1916518A (en) | 2007-02-21 |
| CN100473915C true CN100473915C (en) | 2009-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101049548A Expired - Fee Related CN100473915C (en) | 2005-08-19 | 2005-09-22 | Multiple air conditioner system and operation and control method thereof |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101195560B1 (en) |
| CN (1) | CN100473915C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100953193B1 (en) * | 2007-12-21 | 2010-04-15 | 엘지전자 주식회사 | Control method of multi type air conditioner |
| KR101485848B1 (en) * | 2008-06-25 | 2015-01-23 | 삼성전자 주식회사 | Control method of multi system air conditioner |
| KR101479240B1 (en) * | 2008-07-14 | 2015-01-06 | 삼성전자 주식회사 | Air conditioner and method of controlling the same |
| CN104006497B (en) * | 2014-05-26 | 2017-06-30 | 广东美的集团芜湖制冷设备有限公司 | The control method and device of the cold medium flux of multi-split air conditioner |
| CN108317665B (en) * | 2018-01-04 | 2020-04-24 | 青岛海尔空调器有限总公司 | Defrosting control method and control device for air conditioner |
| CN108592353B (en) * | 2018-05-09 | 2021-05-25 | 青岛海尔空调电子有限公司 | Control method for air conditioning system |
| CN108826599B (en) * | 2018-05-09 | 2021-05-25 | 青岛海尔空调电子有限公司 | Control method for air conditioning system |
| CN108644968B (en) * | 2018-05-09 | 2021-01-05 | 青岛海尔空调电子有限公司 | Control method for air conditioning system |
| CN110736242B (en) * | 2019-10-29 | 2020-10-02 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, storage medium and processor |
| CN110726233B (en) * | 2019-10-29 | 2020-09-25 | 珠海格力电器股份有限公司 | Air conditioner control method, device, storage medium and memory |
| CN110926051A (en) * | 2019-11-21 | 2020-03-27 | 广东美的暖通设备有限公司 | Outdoor heat exchanger assembly, air conditioning system and defrosting method thereof |
| CN112833596B (en) * | 2021-01-21 | 2022-09-30 | 四川长虹空调有限公司 | Method for judging state of refrigerant of refrigerating system |
| CN115264747B (en) * | 2022-07-21 | 2024-07-30 | 珠海格力电器股份有限公司 | Communication-free air conditioning unit control method and device and communication-free air conditioning unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101003356B1 (en) | 2003-10-21 | 2010-12-23 | 삼성전자주식회사 | Air Conditioner And Control Method Thereof |
-
2005
- 2005-08-19 KR KR1020050076497A patent/KR101195560B1/en not_active IP Right Cessation
- 2005-09-22 CN CNB2005101049548A patent/CN100473915C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR101195560B1 (en) | 2012-10-29 |
| KR20070021821A (en) | 2007-02-23 |
| CN1916518A (en) | 2007-02-21 |
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