WO2022062540A1 - 空调器及其室内机电子膨胀阀控制方法、设备 - Google Patents
空调器及其室内机电子膨胀阀控制方法、设备 Download PDFInfo
- Publication number
- WO2022062540A1 WO2022062540A1 PCT/CN2021/103490 CN2021103490W WO2022062540A1 WO 2022062540 A1 WO2022062540 A1 WO 2022062540A1 CN 2021103490 W CN2021103490 W CN 2021103490W WO 2022062540 A1 WO2022062540 A1 WO 2022062540A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air conditioner
- oil return
- expansion valve
- indoor unit
- electronic expansion
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 59
- 239000003507 refrigerant Substances 0.000 claims abstract description 101
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims description 146
- 238000001816 cooling Methods 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 27
- 238000010586 diagram Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 230000001568 sexual effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000010267 cellular communication Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F24F11/56—Remote control
-
- 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
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- 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
-
- 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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid 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
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/16—Lubrication
-
- 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
- F25B2600/00—Control issues
- F25B2600/23—Time delays
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Definitions
- the present application relates to the technical field of air conditioners, and in particular, to an air conditioner and its indoor unit electronic expansion valve control method, device, and computer-readable storage medium.
- the indoor unit of the air conditioner cannot directly obtain the information of whether the outdoor unit of the air conditioner enters the oil return.
- the indoor unit of the air conditioner will still be controlled according to the normal operation, and then the electronic expansion valve of the indoor unit of the air conditioner will not be adjusted accordingly, and the oil return will not be smooth for a long time, causing the compressor to wear or otherwise.
- the temperature and pressure of the whole machine are too high, which leads to shutdown and reduces the reliability of the equipment.
- the embodiments of the present application provide a method for controlling an electronic expansion valve of an indoor unit of an air conditioner, so as to solve the problem that when the outdoor unit of the air conditioner enters an oil return state, the compressor is easily worn and the operation reliability of the air conditioner is reduced.
- the embodiment of the present application provides a method for controlling an electronic expansion valve of an indoor unit of an air conditioner, which monitors the change of the indoor side refrigerant in real time after the air conditioner is started;
- the electronic expansion valve of the indoor unit of the air conditioner is adjusted to adapt to the oil return of the outdoor unit of the air conditioner.
- the change of the indoor side refrigerant is determined by monitoring the first change of the temperature of the indoor heat exchanger and the second change of the temperature of the low-pressure pipe connected between the indoor heat exchanger and the compressor in real time;
- the judging whether the outdoor unit of the air conditioner enters the oil return state based on the change of the indoor side refrigerant includes:
- the judging whether the first change complies with a preset condition during oil return includes:
- the first temperature of the indoor heat exchanger is obtained every first preset time period
- the decrease value of the subsequent first temperature compared with the previous first temperature is greater than the first preset threshold, it is determined that the air conditioner indoor unit has entered the oil return state;
- the increase value of the latter second temperature compared with the former second temperature is greater than the second preset threshold, it is determined that the air conditioner indoor unit enters the oil return state.
- judging whether the second change meets a preset condition during oil return includes:
- the third temperature of the low-pressure pipe is obtained every third preset time interval
- the fourth temperature of the low-pressure pipe is obtained every fourth preset time interval
- the increase value of the subsequent fourth temperature compared with the previous fourth temperature is greater than the fourth preset threshold , it is determined that the indoor unit of the air conditioner enters the oil return state.
- adjusting the electronic expansion valve of the indoor unit of the air conditioner to adapt to the oil return of the outdoor unit of the air conditioner including:
- the opening degree of the electronic expansion valve of the indoor unit of the air conditioner is adjusted according to the second preset parameter.
- the method further includes:
- the electronic expansion valve of the air conditioner indoor unit is automatically controlled based on an automatic control program of the air conditioner indoor unit electronic expansion valve.
- the judging whether the outdoor unit of the air conditioner exits the oil return state based on the change of the indoor side refrigerant includes:
- judging whether the first change in the temperature of the indoor heat exchanger complies with a preset condition when exiting the oil return includes:
- the fifth temperature of the indoor heat exchanger is obtained every fifth preset time period
- the increase value of the subsequent fifth temperature compared with the previous fifth temperature is greater than the fifth preset threshold, it is determined that the air conditioner indoor unit exits the oil return state;
- judging whether the second change in the temperature of the low-pressure pipe connected between the indoor heat exchanger and the compressor complies with a preset condition when exiting the oil return including:
- the sixth temperature of the low-pressure pipe is obtained every sixth preset time interval
- the air conditioner indoor unit exits the oil return state.
- the method further includes: after determining that the outdoor unit of the air conditioner enters the oil return state, counting the operation time of the air conditioner after the outdoor unit of the air conditioner enters the oil return state, and judging the outdoor unit of the air conditioner based on the operation time Whether to exit the oil return state.
- the automatic control program for the electronic expansion valve of the indoor air conditioner to control the electronic expansion valve of the indoor air conditioner includes:
- the steps of the electronic expansion valve of the indoor unit are adjusted to the number of steps before the outdoor unit of the air conditioner enters the oil return state, and then automatically according to the automatic control program Control the indoor unit electronic expansion valve.
- the method is applied to an air conditioner in which the indoor unit of the air conditioner and the outdoor unit of the air conditioner work independently of each other.
- an air conditioner comprising:
- the monitoring module is used to monitor the change of the indoor side refrigerant in real time after the air conditioner is started;
- a judgment module for judging whether the outdoor unit of the air conditioner enters an oil return state based on the change of the indoor side refrigerant
- the adjustment module is configured to adjust the electronic expansion valve of the air conditioner indoor unit to adapt to the oil return of the air conditioner outdoor unit after it is determined that the air conditioner outdoor unit has entered the oil return state.
- an embodiment of the present application also proposes an electronic expansion valve control device for an air conditioner indoor unit, including a memory, a processor, and a control program for the electronic expansion valve of the air conditioner indoor unit stored in the memory and running on the processor.
- the processor executes the electronic expansion valve control program of the air conditioner indoor unit, the above-mentioned control method for the electronic expansion valve of the air conditioner indoor unit is implemented.
- an embodiment of the present application further proposes a computer-readable storage medium, on which a computer-readable storage medium stores an electronic expansion valve control program of an indoor unit of an air conditioner, and the electronic expansion valve control program of an indoor unit of an air conditioner is processed.
- the electronic expansion valve control method of the indoor unit of the air conditioner is realized when the controller is executed.
- the change of the indoor side refrigerant is monitored in real time to determine whether the air conditioner outdoor unit has entered the oil return state, and after it is determined that the air conditioner outdoor unit has entered the oil return state, adjustment
- the electronic expansion valve of the indoor unit of the air conditioner is adapted to the oil return of the outdoor unit of the air conditioner. In this way, when the outdoor unit of the air conditioner enters the oil return state, the electronic expansion valve of the indoor unit of the air conditioner can be adjusted in time to avoid the problem of poor oil return of the air conditioner. .
- the control method for the electronic expansion valve of the indoor air conditioner of the present application has the advantages of prolonging the service life of the compressor and improving the reliability of the air conditioner. sexual advantages.
- FIG. 1 is a module structure diagram of an embodiment of an electronic expansion valve control device for an indoor unit of an air conditioner according to the present application
- FIG. 2 is a schematic flowchart of an embodiment of a method for controlling an electronic expansion valve of an indoor unit of an air conditioner according to the present application
- FIG. 3 is a schematic flowchart of another embodiment of a method for controlling an electronic expansion valve of an indoor unit of an air conditioner according to the present application
- FIG. 4 is a schematic flowchart of another embodiment of a method for controlling an electronic expansion valve of an indoor unit of an air conditioner according to the present application
- FIG. 5 is a schematic flowchart of still another embodiment of a method for controlling an electronic expansion valve of an indoor unit of an air conditioner according to the present application
- FIG. 6 is a schematic flowchart of another embodiment of a method for controlling an electronic expansion valve of an indoor unit of an air conditioner according to the present application
- FIG. 7 is a schematic flowchart of another embodiment of a method for controlling an electronic expansion valve of an indoor unit of an air conditioner according to the present application.
- FIG. 8 is a schematic flowchart of still another embodiment of a method for controlling an electronic expansion valve of an indoor unit of an air conditioner according to the present application
- FIG. 9 is a block diagram of an air conditioner according to an embodiment of the present application.
- any reference signs placed between parentheses shall not be construed as limiting the claim.
- the appearance of "comprising” herein does not exclude the presence of elements or steps not listed in a claim.
- the quantifier "a” or “an” preceding an element does not preclude the presence of a plurality of such elements.
- the present application may be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. While the use of "first,” “second,” and “third,” etc. do not denote any order, these words may be interpreted as names.
- FIG. 1 is a schematic structural diagram of a server 1 (also called an air conditioner indoor unit electronic expansion valve control device) of a hardware operating environment involved in the solution of the embodiment of the present application.
- a server 1 also called an air conditioner indoor unit electronic expansion valve control device
- Servers in the embodiments of this application such as "Internet of Things devices", smart air conditioners with networking functions, smart lamps, smart power supplies, AR/VR devices with networking functions, smart speakers, autonomous vehicles, PCs, smart phones, tablet computers, Devices with display functions such as e-book readers and portable computers.
- Internet of Things devices smart air conditioners with networking functions, smart lamps, smart power supplies, AR/VR devices with networking functions, smart speakers, autonomous vehicles, PCs, smart phones, tablet computers, Devices with display functions such as e-book readers and portable computers.
- the server 1 includes: a memory 11 , a processor 12 and a network interface 13 .
- the memory 11 includes at least one type of readable storage medium, including flash memory, hard disk, multimedia card, card-type memory (eg, SD or DX memory, etc.), magnetic memory, magnetic disk, optical disk, and the like.
- the memory 11 may be an internal storage unit of the server 1 in some embodiments, such as a hard disk of the server 1 .
- the memory 11 may also be an external storage device of the server 1, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card equipped on the server 1 , Flash Card (Flash Card) and so on.
- the memory 11 may also include an internal storage unit of the server 1 and an external storage device.
- the memory 11 can be used not only to store application software installed in the server 1 and various data, such as the code of the electronic expansion valve control program 10 of the air conditioner indoor unit, etc., but also to temporarily store data that has been output or will be output.
- the processor 12 may be a central processing unit (Central Processing Unit, CPU), controller, microcontroller, microprocessor or other data processing chip in some embodiments, for running the program code or processing stored in the memory 11 For example, the electronic expansion valve control program 10 of the air conditioner indoor unit is executed.
- CPU Central Processing Unit
- controller microcontroller
- microprocessor or other data processing chip in some embodiments, for running the program code or processing stored in the memory 11
- the electronic expansion valve control program 10 of the air conditioner indoor unit is executed.
- the network interface 13 may include a standard wired interface and a wireless interface (such as a WI-FI interface), which is generally used to establish a communication connection between the server 1 and other electronic devices.
- a wireless interface such as a WI-FI interface
- the network may be the Internet, a cloud network, a wireless fidelity (Wi-Fi) network, a personal network (PAN), a local area network (LAN), and/or a metropolitan area network (MAN).
- Wi-Fi wireless fidelity
- PAN personal network
- LAN local area network
- MAN metropolitan area network
- Various devices in a network environment may be configured to connect to communication networks according to various wired and wireless communication protocols.
- wired and wireless communication protocols may include, but are not limited to, at least one of the following: Transmission Control Protocol and Internet Protocol (TCP/IP), User Datagram Protocol (UDP), Hypertext Transfer Protocol (HTTP), File Transfer Protocol (FTP), ZigBee, EDGE, IEEE 802.11, Optical Fidelity (Li-Fi), 802.16, IEEE 802.11s, IEEE 802.11g, multi-hop communication, wireless access point (AP), device-to-device communication, cellular communication protocol and/or the Bluetooth (Blue Tooth) communication protocol or a combination thereof.
- the server may further include a user interface
- the user interface may include a display (Display), an input unit such as a keyboard (Keyboard), and an optional user interface may also include a standard wired interface and a wireless interface.
- the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode, organic light-emitting diode) touch device, and the like.
- the display may also be referred to as a display screen or a display unit for displaying information processed in the server 1 and for displaying a visual user interface.
- FIG. 1 only shows the server 1 having the components 11-13 and the electronic expansion valve control 10 of the air conditioner indoor unit.
- the structure shown in FIG. 1 does not constitute a limitation on the server 1, and may include Fewer or more components than shown, or some components are combined, or a different arrangement of components.
- the processor 12 can be used to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- the electronic expansion valve of the indoor unit of the air conditioner is adjusted to adapt to the oil return of the outdoor unit of the air conditioner.
- the processor 12 may be configured to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- the judging whether the outdoor unit of the air conditioner enters the oil return state based on the change of the indoor side refrigerant includes:
- the processor 12 may be configured to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- Determining whether the first change meets the preset conditions for oil return includes:
- the first temperature of the indoor heat exchanger is obtained every first preset time period
- the decrease value of the subsequent first temperature compared with the previous first temperature is greater than the first preset threshold, it is determined that the air conditioner indoor unit has entered the oil return state;
- the increase value of the latter second temperature compared with the former second temperature is greater than the second preset threshold, it is determined that the air conditioner indoor unit enters the oil return state.
- the processor 12 can be used to call the air conditioner indoor unit electronic expansion valve control program stored in the memory 11, and perform the following operations:
- Determining whether the second change meets the preset conditions for oil return includes:
- the third temperature of the low-pressure pipe is obtained every third preset time interval
- the fourth temperature of the low-pressure pipe is obtained every fourth preset time interval
- the increase value of the subsequent fourth temperature compared with the previous fourth temperature is greater than the fourth preset threshold , it is determined that the indoor unit of the air conditioner enters the oil return state.
- the processor 12 may be configured to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- adjusting the electronic expansion valve of the indoor unit of the air conditioner to adapt to the oil return of the outdoor unit of the air conditioner including:
- the opening degree of the electronic expansion valve of the indoor unit of the air conditioner is adjusted according to the second preset parameter.
- the processor 12 may be configured to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- the method also includes:
- the electronic expansion valve of the air conditioner indoor unit is automatically controlled based on an automatic control program of the air conditioner indoor unit electronic expansion valve.
- the processor 12 may be configured to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- the judging whether the outdoor unit of the air conditioner exits the oil return state based on the change of the indoor side refrigerant includes:
- the processor 12 may be configured to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- the fifth temperature of the indoor heat exchanger is obtained every fifth preset time period
- the increase value of the subsequent fifth temperature compared with the previous fifth temperature is greater than the fifth preset threshold, it is determined that the air conditioner indoor unit exits the oil return state.
- the processor 12 may be configured to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- Determining whether the second change in the temperature of the low-pressure pipe connected between the indoor heat exchanger and the compressor complies with the preset conditions when exiting the oil return including:
- the sixth temperature of the low-pressure pipe is obtained every sixth preset time interval
- the air conditioner indoor unit exits the oil return state.
- the processor 12 may be configured to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- the method also includes:
- the operation time of the air conditioner after the outdoor unit of the air conditioner enters the oil return state is counted, and based on the operation time length, it is determined whether the outdoor unit of the air conditioner exits the oil return state.
- the processor 12 may be configured to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- the processor 12 may be configured to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- the automatic control program for the electronic expansion valve of the indoor unit of the air conditioner controls the electronic expansion valve of the indoor unit of the air conditioner, including:
- the steps of the electronic expansion valve of the indoor unit are adjusted to the number of steps before the outdoor unit of the air conditioner enters the oil return state, and then automatically according to the automatic control program Control the indoor unit electronic expansion valve.
- the processor 12 may be configured to call the electronic expansion valve control program of the air conditioner indoor unit stored in the memory 11, and perform the following operations:
- the method is applied to an air conditioner in which the indoor unit of the air conditioner and the outdoor unit of the air conditioner work independently of each other.
- the method for controlling an electronic expansion valve of an indoor unit of an air conditioner of the present application aims to solve the problem that when the outdoor unit of an air conditioner enters an oil return state, it is easy to cause wear of the compressor and reduce the operation reliability of the air conditioner.
- the method for controlling the electronic expansion valve of the air conditioner indoor unit provided by the present application is applied to the air conditioner in which the air conditioner indoor unit and the air conditioner outdoor unit work independently of each other (that is, the air conditioner indoor unit and the air conditioner outdoor unit do not communicate with each other).
- the air conditioner further includes an external signal box, and the external signal box is electrically connected to both the air conditioner indoor unit and the air conditioner outdoor unit.
- the external signal box is used to receive the user's input command, and unidirectionally send a control signal to the air conditioner indoor unit and the air conditioner outdoor unit, so as to control the air conditioner indoor unit and the air conditioner outdoor unit to work together, thereby realizing the adjustment of the indoor ambient temperature.
- FIG. 2 is an embodiment of a method for controlling an electronic expansion valve of an indoor unit of an air conditioner according to the present application, and the method includes the following steps:
- the indoor side refrigerant refers to the refrigerant that circulates through the indoor heat exchanger and the indoor refrigerant line.
- the change of the refrigerant means that after the air conditioner is started, the refrigerant in the air conditioner (including the indoor side refrigerant and the outdoor side refrigerant) changes state with the operation of the air conditioner.
- the change of the refrigerant state includes, but is not limited to, the change of the temperature of the refrigerant, the change of the pressure of the refrigerant, and the change of the flow of the refrigerant, and the change includes but is not limited to the frequency of the change and the magnitude of the change.
- the real-time detection of the change of the indoor side refrigerant refers to the real-time monitoring of the state change of the refrigerant in the indoor side heat exchanger and the indoor side refrigerant pipeline after the air conditioner is started.
- the indoor unit of the air conditioner cannot directly obtain the information of whether the outdoor unit of the air conditioner enters the oil return.
- the working frequency of the compressor will change suddenly, and the change of the working frequency of the compressor will cause the refrigerant in the air conditioner to change accordingly.
- the refrigerant on the indoor side will also follow. Variety. Therefore, during the operation of the air conditioner, it can be judged whether the operating frequency of the compressor has a sudden change based on the change of the refrigerant on the indoor side, and then whether the outdoor unit of the air conditioner has entered the oil return state.
- the detection of whether the outdoor unit of the air conditioner enters the oil return can be realized by the indoor unit of the air conditioner.
- the reason that the indoor unit of the air conditioner and the outdoor unit of the air conditioner are not designed to communicate with each other may be because the cost or difficulty of establishing communication between the indoor unit of the air conditioner and the outdoor unit of the air conditioner is too high, which is not suitable for practical use. That is to say, since the technical solution of the present application is realized on the basis that the indoor unit of the air conditioner and the outdoor unit of the air conditioner do not communicate with each other, it also has the advantages of low cost and high universality.
- the electronic expansion valve of the indoor unit of the air conditioner needs to be adjusted.
- the electronic expansion valve is installed on the refrigerant pipeline on the indoor side. By adjusting the electronic expansion valve It can adjust the flow and pressure of the refrigerant in the indoor side refrigerant pipeline, and then adapt to the oil return of the outdoor unit of the air conditioner to complete the normal oil return of the compressor.
- the indoor unit of the air conditioner cannot directly obtain the information of whether the outdoor unit of the air conditioner enters the oil return.
- the indoor unit of the air conditioner will still be controlled according to the normal operation, and then the electronic expansion valve of the indoor unit of the air conditioner will not be adjusted accordingly, and the oil return will not be smooth for a long time, causing the compressor to wear or otherwise.
- the temperature and pressure of the whole machine are too high, which leads to shutdown and reduces the reliability of the equipment.
- the electronic expansion valve control method of the air conditioner indoor unit of the present application determines whether the air conditioner outdoor unit enters the oil return state by monitoring the change of the indoor side refrigerant in real time after the air conditioner is started, and then determines whether the air conditioner outdoor unit enters the oil return state. After the state, adjust the electronic expansion valve of the indoor unit of the air conditioner to adapt to the oil return of the outdoor unit of the air conditioner. In this way, when the outdoor unit of the air conditioner enters the oil return state, the electronic expansion valve of the indoor unit of the air conditioner can be adjusted in time to avoid the oil return of the air conditioner. Bad problem.
- the control method for the electronic expansion valve of the indoor air conditioner of the present application has the advantages of prolonging the service life of the compressor and improving the reliability of the air conditioner. sexual advantages.
- the technical solution of the present application can also realize the coordinated use of different types of air conditioner indoor units and air conditioner outdoor units.
- the change of the indoor side refrigerant is determined by monitoring the first change of the temperature of the indoor heat exchanger and the second change of the temperature of the low-pressure pipe connected between the indoor heat exchanger and the compressor in real time.
- the temperature change of the refrigerant is one of the refrigerant changes caused by the change of the operating frequency of the compressor. Compared with the refrigerant changes such as flow changes and pressure changes, the temperature is relatively easy to detect data, not only the detection cost is low, and the data is easy to process. , which helps to visually determine the change of refrigerant.
- the temperature change of the refrigerant can be determined by detecting the first change in the temperature of the indoor heat exchanger and the second change in the temperature of the low-pressure pipe connected between the indoor heat exchanger and the compressor. Among them, the temperature change of the indoor heat exchanger can be detected by installing a temperature sensor (temperature sensor) on the coil of the indoor heat exchanger.
- the low-pressure pipe connected between the indoor heat exchanger and the compressor refers to the refrigerant pipe that is connected between the indoor heat exchanger and the compressor and is not provided with an electronic expansion valve.
- obtaining the second change of the temperature of the low-pressure pipe to determine the temperature change of the indoor side refrigerant is because the state of the refrigerant in the low-pressure pipe is not affected by the electronic expansion valve, and can more accurately reflect the operating frequency of the compressor. Variety.
- the electronic expansion valve will change the state of the refrigerant (temperature, pressure, etc.) Judging whether the outdoor unit has entered the oil return state.
- the temperature change of the indoor side refrigerant can be detected by installing a temperature sensor (temperature sensor) at the end of the low pressure pipe installed on the indoor side.
- a temperature sensor temperature sensor
- the design of the present application is not limited to this, and in other embodiments, other changes can also be used to determine the change of the refrigerant.
- the judging whether the outdoor unit of the air conditioner enters the oil return state based on the change of the indoor side refrigerant includes:
- both the first change of the indoor side heat exchanger and the second change of the low-pressure pipe temperature can reflect the temperature change of the indoor side refrigerant. Then, by judging whether any one of the first change and the second change meets the preset conditions for oil return, to determine whether the outdoor unit of the air conditioner enters the oil return state, it is possible to improve the judgment of whether the outdoor unit of the air conditioner enters the oil return state.
- the fault tolerance rate is high, and it is beneficial to timely determine that the outdoor unit of the air conditioner enters the oil return state, and adjust the electronic expansion valve of the indoor unit of the air conditioner in time, thereby helping to improve the reliability of the air conditioner.
- the preset condition during oil return is used to determine whether the outdoor unit of the air conditioner enters the oil return state, which can be adjusted adaptively according to the specific product model of the air conditioner, the actual working environment, etc.
- judging whether the first change complies with a preset condition during oil return includes:
- the temperature of the indoor heat exchanger coil is detected every first preset time period as the first temperature.
- the first preset duration may be 1 second, 2 seconds, 3 seconds, 4 seconds, 5 seconds, 6 seconds, 7 seconds, 8 seconds, 9 seconds, 10 seconds, and the like.
- the difference between two adjacent first temperatures is calculated. Since in the cooling mode, when the outdoor unit of the air conditioner enters the oil return state, the operating frequency of the compressor suddenly changes (suddenly increase) will cause the refrigerant temperature to drop rapidly. Therefore, it can be judged whether the outdoor unit of the air conditioner enters the oil return through the reduction range of the indoor side refrigerant within the first preset time period. That is to say, the difference between the two first temperatures should be the reduction value of the following first temperature compared with the previous first temperature among the two adjacent first temperatures, if the reduction value is greater than the first temperature If the preset threshold is set, it can be determined that the outdoor unit of the air conditioner enters the oil return state.
- the first preset threshold can be adjusted adaptively according to the specific product model of the air conditioner, the actual working environment, and the like.
- the first preset threshold may be 1°C, 2°C, 3°C, 4°C, 5°C, 6°C, and the like.
- judging whether the first change complies with a preset condition when returning oil further includes:
- the temperature of the indoor heat exchanger coil is detected every second preset time period as the second temperature.
- the second preset duration may be 1 second, 2 seconds, 3 seconds, 4 seconds, 5 seconds, 6 seconds, 7 seconds, 8 seconds, 9 seconds, 10 seconds, and the like.
- the difference between two adjacent second temperatures is calculated. Since in the heating mode, when the outdoor unit of the air conditioner enters the oil return state, the compressor operating frequency suddenly changes ( sudden increase) will cause the refrigerant temperature to rise rapidly. Therefore, it can be judged whether the outdoor unit of the air conditioner enters the oil return through the increase of the indoor side refrigerant within the second preset time period. That is to say, the difference between the two second temperatures should be the increased value of the subsequent second temperature compared to the previous second temperature among the two adjacent second temperatures, if the increased value is greater than With the second preset threshold, it can be determined that the outdoor unit of the air conditioner enters the oil return state.
- the second preset threshold can be adjusted adaptively according to the specific product model of the air conditioner, the actual working environment, and the like.
- the second preset threshold may be 2°C, 3°C, 4°C, 5°C, 6°C, 7°C, 8°C, 9°C, and the like.
- the first preset duration may be equal to the second preset duration.
- judging whether the second change complies with a preset condition during oil return includes:
- the temperature of the low-pressure pipe is detected every third preset time period as the third temperature.
- the third preset duration may be 1 second, 2 seconds, 3 seconds, 4 seconds, 5 seconds, 6 seconds, 7 seconds, 8 seconds, 9 seconds, 10 seconds, and the like.
- the temperature of the refrigerant in the low-pressure pipe will be affected, thereby affecting the judgment of the temperature change of the refrigerant, which may easily lead to errors. Therefore, when determining the temperature change of the indoor side refrigerant through the temperature change of the low-pressure pipe, it needs to be carried out on the premise that the air outlet wind speed of the air conditioner indoor unit remains unchanged.
- the constant air outlet wind speed of the air conditioner indoor unit means that in the process of acquiring any two adjacent third temperatures, the windshield (wind speed level) of the air conditioner indoor unit does not change.
- the difference between two adjacent third temperatures is calculated, because in the cooling mode, the temperature of the refrigerant will decrease rapidly when the outdoor unit of the air conditioner enters the oil return. Therefore, the difference between the two third temperatures is the lowering value of the subsequent third temperature compared to the previous third temperature among the two adjacent third temperatures, if the lowering value is greater than the third preset threshold , it can be determined that the outdoor unit of the air conditioner enters the oil return state.
- the third preset threshold can be adjusted adaptively according to the specific product model of the air conditioner, the actual working environment, and the like. Exemplarily, the third preset threshold may be 1°C, 2°C, 3°C, 4°C, 5°C, 6°C, and the like.
- judging whether the second change complies with a preset condition during oil return further includes:
- the temperature of the low-pressure pipe is detected every fourth preset time period as the fourth temperature.
- the fourth preset duration may be 1 second, 2 seconds, 3 seconds, 4 seconds, 5 seconds, 6 seconds, 7 seconds, 8 seconds, 9 seconds, 10 seconds, and the like.
- the temperature of the refrigerant in the low-pressure pipe will be affected, thereby affecting the judgment of the temperature change of the refrigerant, which may easily lead to errors. Therefore, when determining the temperature change of the indoor side refrigerant through the temperature change of the low-pressure pipe, it needs to be carried out on the premise that the air outlet wind speed of the air conditioner indoor unit remains unchanged.
- the constant air outlet wind speed of the air conditioner indoor unit means that in the process of acquiring any two adjacent fourth temperatures, the windshield (wind speed level) of the air conditioner indoor unit does not change.
- the difference between two adjacent fourth temperatures is calculated, because in the heating mode, the temperature of the refrigerant will rise rapidly due to the outdoor unit of the air conditioner entering the oil return. Therefore, the difference between the two fourth temperatures is an increase value of the subsequent fourth temperature compared to the previous fourth temperature among the two adjacent fourth temperatures.
- the threshold is set, it can be determined that the outdoor unit of the air conditioner enters the oil return state.
- the fourth preset threshold can be adjusted adaptively according to the specific product model of the air conditioner, the actual working environment, and the like. Exemplarily, the fourth preset threshold may be 1°C, 2°C, 3°C, 4°C, 5°C, 6°C, and the like.
- the third preset duration may be equal to the fourth preset duration.
- the electronic expansion valve of the indoor unit of the air conditioner is adjusted to adapt to the oil return of the outdoor unit of the air conditioner, including:
- the first preset parameter is an adjustment parameter of the electronic expansion valve of the indoor unit of the air conditioner when the air conditioner is in the cooling mode and the outdoor unit of the air conditioner enters the oil return state.
- the first preset parameter may be the number of oil return steps Lc1, and the Lc1 may be 200 steps, 225 steps, 250 steps, 275 steps, 300 steps, 325 steps, 350 steps, 375 steps, 400 steps, 425 steps steps, 450 steps, 475 steps, 500 steps, etc.
- Lc1 as 350 steps as an example, if it is determined that the outdoor unit of the air conditioner enters the oil return state in cooling mode, the opening of the electronic expansion valve of the indoor unit of the air conditioner will be opened to 350 steps of oil return steps.
- the second preset parameter is the adjustment parameter of the electronic expansion valve of the indoor unit of the air conditioner when the air conditioner is in the heating mode and the outdoor unit of the air conditioner enters the oil return state.
- the second preset parameter may be the number of oil return steps Lc2, and the Lc2 may be 300 steps, 320 steps, 340 steps, 360 steps, 380 steps, 400 steps, 420 steps, 440 steps, 460 steps, 480 steps steps, 500 steps, 520 steps, 540 steps, 560 steps, 580 steps, 600 steps, etc.
- the method further includes:
- the operating frequency of the compressor will return to the frequency before the oil return, that is to say, when the outdoor unit of the air conditioner withdraws from the oil return, the operating frequency of the compressor will also change suddenly. , which causes the refrigerant in the air conditioner to change. Then, correspondingly, after it is determined that the outdoor unit of the air conditioner enters the oil return state, it can be determined whether the outdoor unit of the air conditioner exits the oil return state based on the change of the refrigerant on the indoor side.
- the automatic control program of the electronic expansion valve of the air conditioner indoor unit refers to the automatic control program of the electronic expansion valve preset by the air conditioner indoor unit.
- Different types of air conditioner indoor units are preset with different automatic control programs.
- the automatic control program is mainly used for It is used to control the electronic expansion valve to adapt to the set temperature input by the current user.
- the indoor unit of the air conditioner should also release the oil return control accordingly, so that the air conditioner can restore the working state before the oil return, and when the air conditioner returns to the working state before the oil return, the automatic control The program automatically controls the electronic expansion valve of the indoor unit of the air conditioner. Therefore, when it is determined that the outdoor unit of the air conditioner exits the oil return state, the electronic expansion valve of the indoor unit of the air conditioner needs to be automatically controlled based on the automatic control program of the electronic expansion valve of the indoor unit of the air conditioner.
- the outdoor unit of the air conditioner After the outdoor unit of the air conditioner enters the oil return state, it can be judged whether the outdoor unit of the air conditioner has exited the oil return state by continuing to monitor the change of the refrigerant on the indoor side. After determining whether the outdoor unit of the air conditioner exits the oil return state, the electronic expansion valve will be automatically controlled, which will help the air conditioner to restore the working state before the oil return in time, thereby improving comfort and improving the user's Use experience.
- the judging whether the outdoor unit of the air conditioner exits the oil return state based on the change of the indoor side refrigerant includes:
- both the first change of the indoor side heat exchanger and the second change of the low-pressure pipe temperature can reflect the change of the indoor side refrigerant temperature. It can be understood that since the temperature change of the indoor side refrigerant can be used to determine whether the outdoor unit of the air conditioner has entered the oil return state, then it is not necessary to obtain other types of data to continue to judge whether the air conditioner outdoor unit has exited the oil return state through the change of the indoor side refrigerant temperature. It can be judged whether the outdoor unit of the air conditioner exits the oil return state, which is conducive to simplifying the conditions for judging whether the outdoor unit of the air conditioner enters/exits the oil return state, thereby reducing the difficulty of judgment and the cost required for method realization.
- the air conditioner outdoor unit exits the oil return state by judging whether any one of the first change and the second change complies with the preset conditions when exiting the oil return state, it is judged whether the air conditioner outdoor unit exits the oil return state, which can improve the judgment of the air conditioner outdoor unit exiting the oil return state.
- the fault tolerance rate is high, and it is beneficial to timely determine that the outdoor unit of the air conditioner exits the oil return state, and adjust the electronic expansion valve of the indoor unit of the air conditioner in time, so that the air conditioner can return to the working state before the oil return as soon as possible, which is conducive to improving the comfort of the air conditioner.
- the preset condition when exiting the oil return state is used to determine whether the outdoor unit of the air conditioner exits the oil return state, which can be adjusted adaptively according to the specific product model of the air conditioner, the actual working environment, etc.
- determining whether the first change in the temperature of the indoor heat exchanger meets the preset conditions when exiting the oil return includes:
- the temperature of the indoor heat exchanger coil is detected every fifth preset time period as the fifth temperature.
- the fifth preset duration may be 1 second, 2 seconds, 3 seconds, 4 seconds, 5 seconds, 6 seconds, 7 seconds, 8 seconds, 9 seconds, 10 seconds, and so on.
- the difference between two adjacent fifth temperatures is calculated. Because in the cooling mode, when the outdoor unit of the air conditioner enters the oil return, the operating frequency of the compressor suddenly changes (suddenly increases ) will cause the refrigerant temperature to drop rapidly. When the outdoor unit of the air conditioner withdraws from the oil return, the operating frequency of the compressor before returning to the oil will cause the temperature of the refrigerant to rise rapidly. Therefore, it can be judged whether the outdoor unit of the air conditioner enters the oil return through the increase of the indoor side refrigerant within the fifth preset time period.
- the difference between the two fifth temperatures should be the increased value of the subsequent fifth temperature compared to the previous fifth temperature among the two adjacent fifth temperatures, if the increased value is greater than
- the fifth preset threshold can be adjusted adaptively according to the specific product model of the air conditioner, the actual working environment, and the like.
- the fifth preset threshold may be 1°C, 2°C, 3°C, 4°C, 5°C, 6°C, and the like.
- the temperature change of the indoor heat exchanger is used here to judge whether the outdoor unit of the air conditioner exits the oil return state, because in the cooling mode, the refrigerant in the low-pressure pipe flows from the indoor heat exchanger to the compressor, so that is It can be said that the temperature change of the indoor heat exchanger can reflect the change of the working frequency of the compressor earlier, so that it can be judged earlier whether the outdoor unit of the air conditioner has exited the oil return state, and then the electronic expansion valve of the indoor unit of the air conditioner can be adjusted as soon as possible. The air conditioner can be restored to the working state before oil return as soon as possible, which is conducive to improving comfort and improving user experience.
- the temperature change of the low pressure pipe can also be used to determine whether the outdoor unit of the air conditioner exits the oil return state in the cooling mode.
- the fifth preset duration is equal to the first preset duration in the above-mentioned embodiment, then the fifth temperature It can also be regarded as the first temperature.
- the judgment of whether the outdoor unit of the air conditioner enters the oil return state is based on the lower value of the later first temperature compared with the previous first temperature among the two adjacent first temperatures; and The basis for judging whether the outdoor unit of the air conditioner exits the oil return state is, among two adjacent fifth temperatures, the increase value of the subsequent fifth temperature compared to the previous fifth temperature.
- determining whether the second change in the temperature of the low-pressure pipe connected between the indoor heat exchanger and the compressor complies with the preset conditions when withdrawing from the oil return including:
- the temperature of the low-pressure pipe is detected every sixth preset time period as the sixth temperature.
- the sixth preset duration may be 1 second, 2 seconds, 3 seconds, 4 seconds, 5 seconds, 6 seconds, 7 seconds, 8 seconds, 9 seconds, 10 seconds, and the like.
- the difference between two adjacent sixth temperatures is calculated. Since in the heating mode, the outdoor unit of the air conditioner enters the oil return, which will cause the temperature of the refrigerant to rise rapidly. When the outdoor unit of the air conditioner withdraws from the oil return, the operating frequency of the compressor before returning to the oil will cause the temperature of the refrigerant to drop rapidly. Therefore, the difference between the two sixth temperatures is the lowering value of the subsequent sixth temperature compared to the previous sixth temperature among the two adjacent sixth temperatures, if the lowering value is greater than the sixth preset threshold , it can be determined that the outdoor unit of the air conditioner enters the oil return state.
- the sixth preset threshold can be adjusted adaptively according to the specific product model of the air conditioner, the actual working environment, and the like.
- the sixth preset threshold may be 1°C, 2°C, 3°C, 4°C, 5°C, 6°C, and the like.
- the temperature change of the low-pressure pipe is used here to judge whether the outdoor unit of the air conditioner exits the oil return state, because in the heating mode, the refrigerant in the low-pressure pipe flows from the compressor to the indoor heat exchanger, so that is to say , the temperature change of the low-pressure pipe can reflect the change of the working frequency of the compressor earlier, so that it can be judged earlier whether the outdoor unit of the air conditioner has exited the oil return state, and then the electronic expansion valve of the indoor unit of the air conditioner can be adjusted as soon as possible, so that the air conditioner can It can restore the working state before oil return as soon as possible, which is conducive to improving comfort and improving user experience.
- the temperature change of the indoor heat exchanger can also be used to determine whether the outdoor unit of the air conditioner exits the oil return state.
- the sixth preset duration is equal to the fourth preset duration in the above-mentioned embodiment, then the sixth temperature It can also be regarded as the fourth temperature.
- the judgment of whether the outdoor unit of the air conditioner enters the oil return state is based on the increase value of the subsequent fourth temperature compared with the previous fourth temperature among the two adjacent fourth temperatures. ; and the basis for judging whether the outdoor unit of the air conditioner exits the oil return state is, among the two adjacent sixth temperatures, the lower value of the subsequent sixth temperature compared to the previous sixth temperature.
- the method further includes:
- the oil return of the air conditioner is usually time-limited. Therefore, the operating time of the air conditioner after the outdoor unit of the air conditioner enters the oil return state can be counted, and based on the operation time, the outdoor unit of the air conditioner can be judged to exit the oil return state. . It can be understood that it is simple and direct to judge whether the outdoor unit of the air conditioner exits the oil return state in this way, and the judgment accuracy rate is high.
- the judging whether the outdoor unit of the air conditioner exits the oil return state based on the operating duration includes:
- the preset threshold can be adjusted adaptively according to the specific product model of the air conditioner, the actual working environment, and the like.
- the preset threshold may be 5 minutes, 6 minutes, 7 minutes, 8 minutes, 9 minutes, 10 minutes, 11 minutes, 12 minutes, and the like.
- the automatic control program for the electronic expansion valve of the indoor air conditioner to control the electronic expansion valve of the indoor air conditioner includes:
- the steps of the electronic expansion valve of the indoor unit are adjusted to the number of steps before the outdoor unit of the air conditioner enters the oil return state, and then automatically according to the automatic control program Control the indoor unit electronic expansion valve.
- the change in the operating frequency of the compressor of the indoor air conditioner can be reflected in the change of the refrigerant at the first time. Therefore, it can be determined in the shortest time whether the outdoor air conditioner has exited the oil return state through the change of the refrigerant on the indoor side. Then, when it is determined that the outdoor unit of the air conditioner exits the oil return state based on the change of the indoor side refrigerant, the step number of the electronic expansion valve of the indoor unit is adjusted to the number of steps before the outdoor unit of the air conditioner enters the oil return state, which can make the air conditioner in the shortest time.
- the indoor unit is synchronized with the outdoor unit of the air conditioner, which is conducive to restoring the air conditioner to the working state before oil return as soon as possible, thereby improving comfort and improving user experience.
- the automatic control program of the electronic expansion valve of the indoor air conditioner controls the electronic expansion valve of the indoor air conditioner, further comprising:
- the electronic expansion valve of the indoor unit is automatically controlled directly according to the automatic control program.
- the outdoor unit of the air conditioner when the running time meets the judgment condition (greater than the preset threshold), it can be considered that the outdoor unit of the air conditioner must have exited the oil return state.
- the outdoor unit of the air conditioner may have exited the return state before the running time meets the judgment condition.
- oil state and run in non-oil return mode for a period of time, at this time, adjust the steps of the electronic expansion valve of the indoor unit to the number of steps before the outdoor unit of the air conditioner enters the oil return state, which will cause the indoor unit of the air conditioner and the outdoor unit of the air conditioner.
- the machine is not synchronized, which affects the working effect of the air conditioner. Therefore, if it is determined based on the operating time that the outdoor unit of the air conditioner exits the oil return state, the electronic expansion valve of the indoor unit can be automatically controlled directly according to the automatic control program.
- an embodiment of the present application further proposes an air conditioner, and the air conditioner includes:
- the monitoring module 110 is used to monitor the change of the indoor side refrigerant in real time after the air conditioner is started;
- the judgment module 120 is used for judging whether the outdoor unit of the air conditioner enters the oil return state based on the change of the indoor side refrigerant;
- the adjustment module 130 is configured to adjust the electronic expansion valve of the air conditioner indoor unit to adapt to the oil return of the air conditioner outdoor unit after it is determined that the air conditioner outdoor unit enters the oil return state.
- an embodiment of the present application also proposes a computer-readable storage medium, and the computer-readable storage medium may be a hard disk, a multimedia card, an SD card, a flash memory card, an SMC, a read-only memory (ROM), an erasable programmable read-only memory Memory (EPROM), portable compact disk read only memory (CD-ROM), USB memory, etc. any one or any combination of several.
- the computer-readable storage medium includes an air-conditioning indoor unit electronic expansion valve control program 10.
- the specific implementation of the computer-readable storage medium of the present application is substantially the same as the specific implementation of the above-mentioned air-conditioning indoor unit electronic expansion valve control method and server 1. This will not be repeated here.
- the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
- computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
- These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
- the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
本申请公开了一种空调器及其室内机电子膨胀阀控制方法、设备及计算机可读存储介质,该方法包括:在空调器启动后,实时监测室内侧冷媒的变化;基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态;在判定空调室外机进入回油状态时,调节空调室内机电子膨胀阀以适配所述空调室外机的回油。
Description
优先权信息
本申请要求于2020年9月28日申请的、申请号为202011047418.X的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请涉及空调器技术领域,尤其涉及一种空调器及其室内机电子膨胀阀控制方法、设备及计算机可读存储介质。
当空调室内机与空调室外机相互不通讯时,空调室内机无法直接获取空调室外机是否进入回油的信息。此时,若空调室外机进入回油状态,那么将导致空调室内机仍按照正常运行控制,进而会由于空调室内机电子膨胀阀没有对应调节,而出现长期回油不畅,引起压缩机磨损或使整机温度压力过高而导致停机,降低设备可靠性。
发明内容
本申请实施例通过提供一种空调室内机电子膨胀阀控制方法,解决空调室外机进入回油状态时,易导致压缩机磨损、降低空调器运行可靠性的问题。
为实现上述目的,本申请实施例提供了一种空调室内机电子膨胀阀控制方法,在空调器启动后,实时监测室内侧冷媒的变化;
基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态;
若判定空调室外机进入回油状态,则调节空调室内机电子膨胀阀以适配所述空调室外机的回油。
在一实施例中,通过实时监测室内换热器温度的第一变化和连通于室内换热器与压缩机之间的低压管温度的第二变化以确定室内侧冷媒的变化;
所述基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态,包括:
判断所述第一变化和所述第二变化中的任一者是否符合回油时的预设条件。
在一实施例中,所述判断所述第一变化是否符合回油时的预设条件,包括:
在制冷模式下,每间隔第一预设时长获取一次室内换热器的第一温度;
若任意相邻两个所述第一温度中,在后的第一温度相较于在先的第一温度的降低值大于第一预设阈值,则判定空调室内机进入回油状态;
和/或,
在制热模式下,每间隔第二预设时长获取一次室内换热器的第二温度;
若任意相邻两个所述第二温度中,在后的第二温度相较于在先的第二温度的升高值大于第二预设阈值,则判定空调室内机进入回油状态。
在一实施例中,判断所述第二变化是否符合回油时的预设条件,包括:
在制冷模式下,每间隔第三预设时长获取一次低压管的第三温度;
当空调室内机的出风风速不变时,若任意相邻两个所述第三温度中,在后的第三温度相较于在先的第三温度的降低值大于第三预设阈值,则判定空调室内机进入回油状态;
和/或,
在制热模式下,每间隔第四预设时长获取一次低压管的第四温度;
当空调室内机的出风风速不变时,若任意相邻两个所述第四温度中,在后的第四温度相较于在先的第四温度的升高值大于第四预设阈值,则判定空调室内机进入回油状态。
在一实施例中,所述若判定空调室外机进入回油状态,则调节空调室内机电子膨胀阀以适配所述空调室外机的回油,包括:
若在制冷模式下判定空调室外机进入回油状态,则根据第一预设参数调节所述空调室内机电子膨胀阀的开度;
若在制热模式下判定空调室外机进入回油状态,则根据第二预设参数调节所述空调室内机电子膨胀阀的开度。
在一实施例中,所述方法还包括:
在判定空调室外机进入回油状态后,基于室内侧冷媒的变化判断所述空调室外机是否退出回油状态;
若判定所述空调室外机退出回油状态,则基于空调室内机电子膨胀阀的自动控制程序自动控制所述空调室内机电子膨胀阀。
在一实施例中,
所述基于室内侧冷媒的变化判断所述空调室外机是否退出回油状态,包括:
判断室内换热器温度的第一变化和连通于室内换热器与压缩机之间的低压管温度的第二变化中的任一者是否符合退出回油时的预设条件。
在一实施例中,判断室内换热器温度的第一变化是否符合退出回油时的预设条件,包括:
在制冷模式下,每间隔第五预设时长获取一次室内换热器的第五温度;
若任意相邻两个所述第五温度中,在后的第五温度相较于在先的第五温度的升高值大于第五预设阈值,则判定空调室内机退出回油状态;
和/或,
在一实施例中,判断连通于室内换热器与压缩机之间的低压管温度的第二变化是否符合退出回油时的预设条件,包括:
在制热模式下,每间隔第六预设时长获取一次低压管的第六温度;
若任意相邻两个所述第六温度中,在后的第六温度相较于在先的第六温度的降低值大于第六预设阈值,则判定空调室内机退出回油状态。
在一实施例中,所述方法还包括:在判定空调室外机进入回油状态后,统计空调室外机进入回油状态后空调器的运行时长,并基于所述运行时长判断所述空调室外机是否退出回油状态。
在一实施例中,所述于空调室内机电子膨胀阀的自动控制程序控制所述空调室内机电子膨胀阀,包括:
若基于室内侧冷媒的变化判定空调室外机退出回油状态,则将所述室内机电子膨胀阀的步数调节至空调室外机进入回油状态前的步数,再根据所述自动控制程序自动控制所述室内机电子膨胀阀。
在一实施例中,所述方法应用于空调室内机和空调室外机相互独立工作的空调器。
为实现上述目的,本申请实施例还提出一种空调器,包括:
监测模块,用于在空调器启动后,实时监测室内侧冷媒的变化;
判断模块,用于基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态;
调节模块,用于在判定空调室外机进入回油状态后,调节空调室内机电子膨胀阀以适配所述空调室外机的回油。
为实现上述目的,本申请实施例还提出一种空调室内机电子膨胀阀控制设备,包括存储器、处理器及存储在存储器上并可在处理器上运行的空调室内机电子膨胀阀控制程序,所述处理器执行所述空调室内机电子膨胀阀控制程序时实现如上述的空调室内机电子膨胀阀控制方法。
为实现上述目的,本申请实施例还提出一种计算机可读存储介质,所述计算机可读存储介质上存储有空调室内机电子膨胀阀控制程序,所述空调室内机电子膨胀阀控制程序被处理器执行时实现如上述的空调室内机电子膨胀阀控制方法。
本申请的空调室内机电子膨胀阀控制方法,在空调器启动后,通过实时监测室内侧冷媒的变化以判断空调室外机是否进入回油状态,再于判定空调室外机进入回油状态后,调节空调室内机电子膨胀阀以适配空调室外机的回油,如此,便可在空调室外机进入回油状态时,及时调节空调室内机电子膨胀阀,而避免空调器出现回油不畅的问题。可见,相较于空调室外机回油时,空调室内机无法及时调节电子膨胀阀的空调器而言,本申请的空调室内机电子膨胀阀控制方法具有延长压缩机使用寿命、提高空调器工作可靠性的优点。
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图示出的结构获得其他的附图。
图1为本申请空调室内机电子膨胀阀控制设备一实施例的模块结构图;
图2为本申请空调室内机电子膨胀阀控制方法一实施例的流程示意图;
图3为本申请空调室内机电子膨胀阀控制方法另一实施例的流程示意图;
图4为本申请空调室内机电子膨胀阀控制方法又一实施例的流程示意图;
图5为本申请空调室内机电子膨胀阀控制方法再一实施例的流程示意图;
图6为本申请空调室内机电子膨胀阀控制方法再一实施例的流程示意图;
图7为本申请空调室内机电子膨胀阀控制方法再一实施例的流程示意图;
图8为本申请空调室内机电子膨胀阀控制方法再一实施例的流程示意图;
图9为本申请空调器一实施例的模块结构图。
本申请目的的实现、功能特点及优点将结合实施例,参照附图做进一步说明。
应当理解,此处所描述的具体实施例仅仅用以解释本申请,并不用于限定本申请。
为了更好的理解上述技术方案,下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例,然而应当理解,可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本公开,并且能够将本公开的范围完整的传达给本领域的技术人员。
应当注意的是,在权利要求中,不应将位于括号之间的任何参考符号构造成对权利要求的限制。文中出现的“包含”不排除存在未列在权利要求中的部件或步骤。位于部件之前的数量词“一”或“一个”不排除存在多个这样的部件。本申请可以借助于包括有若干不同部件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中,这些装置中的若干个可以是通过同一个硬件项来具体体现。而“第一”、“第二”、以及“第三”等的使用不表示任何顺序,可将这些词解释为名称。
如图1所示,图1是本申请实施例方案涉及的硬件运行环境的服务器1(又叫空调室内机电子膨胀阀控制设备)结构示意图。
本申请实施例服务器,如“物联网设备”、带联网功能的智能空调、智能电灯、智能电源,带联网功能的AR/VR设备,智能音箱、自动驾驶汽车、PC,智能手机、平板电脑、电子书阅读器、便携计算机等具有显示功能的设备。
如图1所示,所述服务器1包括:存储器11、处理器12及网络接口13。
其中,存储器11至少包括一种类型的可读存储介质,所述可读存储介质包括闪存、硬盘、多媒体卡、卡型存储器(例如,SD或DX存储器等)、磁性存储器、磁盘、光盘等。存储器11在一些实施例中可以是服务器1的内部存储单元,例如该服务器1的硬盘。存储器11在另一些实施例中也可以是服务器1的外部存储设备,例如该服务器1上配备的插接式硬盘,智能存储卡(Smart Media Card,SMC),安全数字(Secure Digital,SD)卡,闪存卡(Flash Card)等。
进一步地,存储器11还可以包括服务器1的内部存储单元也包括外部存储设备。存储器11不仅可以用于存储安装于服务器1的应用软件及各类数据,例如空调室内机电子膨胀阀控制程序10的代码等,还可以用于暂时地存储已经输出或者将要输出的数据。
处理器12在一些实施例中可以是一中央处理器(Central Processing Unit,CPU)、控制器、微控制器、微处理器或其他数据处理芯片,用于运行存储器11中存储的程序代码或处理数据,例如执行空调室内机电子膨胀阀控制程序10等。
网络接口13可选的可以包括标准的有线接口、无线接口(如WI-FI接口),通常用于在该服务器1与其他电子设备之间建立通信连接。
网络可以为互联网、云网络、无线保真(Wi-Fi)网络、个人网(PAN)、局域网(LAN)和/或城域网(MAN)。网络环境中的各种设备可以被配置为根据各种有线和无线通信协议连接到通信网络。这样的有线和无线通信协议的例子可以包括但不限于以下中的至少一个:传输控制协议和互联网协议(TCP/IP)、用户数据报协议(UDP)、超文本传输协议(HTTP)、文件传输协议(FTP)、ZigBee、EDGE、IEEE 802.11、光保真(Li-Fi)、802.16、IEEE 802.11s、IEEE 802.11g、多跳通信、无线接入点(AP)、设备对设备通信、蜂窝通信协议和/或蓝牙(Blue Tooth)通信协议或其组合。
可选地,该服务器还可以包括用户接口,用户接口可以包括显示器(Display)、输入单元比如键盘(Keyboard),可选的用户接口还可以包括标准的有线接口、无线接口。可选地,在一些实施例中,显示器可以是LED显示器、液晶显示器、触控式液晶显示器以及OLED(Organic Light-Emitting Diode,有机发光二极管)触摸器等。其中,显示器也可以称为显示屏或显示单元,用于显示在服务器1中处理的信息以及用于显示可视化的用户界面。
图1仅示出了具有组件11-13以及空调室内机电子膨胀阀控制10的服务器1,本领域技术人员可以理解的是,图1示出的结构并不构成对服务器1的限定,可以包括比图示更少或者更多的部件,或者组合某些部件,或者不同的部件布置。
在本实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
在空调器启动后,实时监测室内侧冷媒的变化;
基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态;
若判定空调室外机进入回油状态,则调节空调室内机电子膨胀阀以适配所述空调室外机的回油。
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
通过实时监测室内换热器温度的第一变化和连通于室内换热器与压缩机之间的低压管温度的第二变化以确定室内侧冷媒的变化;
所述基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态,包括:
判断所述第一变化和所述第二变化中的任一者是否符合回油时的预设条件。
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
判断所述第一变化是否符合回油时的预设条件,包括:
在制冷模式下,每间隔第一预设时长获取一次室内换热器的第一温度;
若任意相邻两个所述第一温度中,在后的第一温度相较于在先的第一温度的降低值大于第一预设阈值,则判定空调室内机进入回油状态;
和/或,
在制热模式下,每间隔第二预设时长获取一次室内换热器的第二温度;
若任意相邻两个所述第二温度中,在后的第二温度相较于在先的第二温度的升高值大于第二预设阈值,则判定空调室内机进入回油状态。
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制 程序,并执行以下操作:
判断所述第二变化是否符合回油时的预设条件,包括:
在制冷模式下,每间隔第三预设时长获取一次低压管的第三温度;
当空调室内机的出风风速不变时,若任意相邻两个所述第三温度中,在后的第三温度相较于在先的第三温度的降低值大于第三预设阈值,则判定空调室内机进入回油状态;
和/或,
在制热模式下,每间隔第四预设时长获取一次低压管的第四温度;
当空调室内机的出风风速不变时,若任意相邻两个所述第四温度中,在后的第四温度相较于在先的第四温度的升高值大于第四预设阈值,则判定空调室内机进入回油状态。
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
所述若判定空调室外机进入回油状态,则调节空调室内机电子膨胀阀以适配所述空调室外机的回油,包括:
若在制冷模式下判定空调室外机进入回油状态,则根据第一预设参数调节所述空调室内机电子膨胀阀的开度;
若在制热模式下判定空调室外机进入回油状态,则根据第二预设参数调节所述空调室内机电子膨胀阀的开度。
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
所述方法还包括:
在判定空调室外机进入回油状态后,基于室内侧冷媒的变化判断所述空调室外机是否退出回油状态;
若判定所述空调室外机退出回油状态,则基于空调室内机电子膨胀阀的自动控制程序自动控制所述空调室内机电子膨胀阀。
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
所述基于室内侧冷媒的变化判断所述空调室外机是否退出回油状态,包括:
判断室内换热器温度的第一变化和连通于室内换热器与压缩机之间的低压管温度的第二变化中的任一者是否符合退出回油时的预设条件。
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
判断室内换热器温度的第一变化是否符合退出回油时的预设条件,包括:
在制冷模式下,每间隔第五预设时长获取一次室内换热器的第五温度;
若任意相邻两个所述第五温度中,在后的第五温度相较于在先的第五温度的升高值大于第五预设阈值,则判定空调室内机退出回油状态。
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
判断连通于室内换热器与压缩机之间的低压管温度的第二变化是否符合退出回油时的预设条件,包括:
在制热模式下,每间隔第六预设时长获取一次低压管的第六温度;
若任意相邻两个所述第六温度中,在后的第六温度相较于在先的第六温度的降低值大于第六预设阈值,则判定空调室内机退出回油状态。
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
所述方法还包括:
在判定空调室外机进入回油状态后,统计空调室外机进入回油状态后空调器的运行时 长,并基于所述运行时长判断所述空调室外机是否退出回油状态。
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
所述于空调室内机电子膨胀阀的自动控制程序控制所述空调室内机电子膨胀阀,包括:
若基于室内侧冷媒的变化判定空调室外机退出回油状态,则将所述室内机电子膨胀阀的步数调节至空调室外机进入回油状态前的步数,再根据所述自动控制程序自动控制所述室内机电子膨胀阀。
在一实施例中,处理器12可以用于调用存储器11中存储的空调室内机电子膨胀阀控制程序,并执行以下操作:
所述方法应用于空调室内机和空调室外机相互独立工作的空调器。
基于上述空调室内机电子膨胀阀控制设备的硬件构架,提出本申请空调室内机电子膨胀阀控制方法的实施例。本申请的空调室内机电子膨胀阀控制方法,旨在解决空调室外机进入回油状态时,易导致压缩机磨损、降低空调器运行可靠性的问题。
本申请所提供的空调室内机电子膨胀阀控制方法,应用于空调室内机和空调室外机相互独立工作(即空调室内机和空调室外机相互不通讯)的空调器。具体而言,该空调器还包括外部信号盒,该外部信号盒与空调室内机及空调室外机均电连接。该外部信号盒用于接收用户的输入指令,并单方向地向空调室内机及空调室外机发送控制信号,以控制空调室内机与空调室外机配合工作,进而实现对室内环境温度的调节。
具体地,参照图2,图2为本申请空调室内机电子膨胀阀控制方法的一实施例,所述方法包括以下步骤:
S10、在空调器启动后,实时监测室内侧冷媒的变化。
具体而言,室内侧冷媒是指流通于室内换热器、室内冷媒管路中的冷媒。冷媒的变化是指,在空调器启动后,空调器中的冷媒(包括室内侧冷媒和室外侧冷媒)随空调器运行而发生状态变化。该冷媒状态的变化包括但不限于冷媒温度的变化、冷媒压力的变化、冷媒流量的变化,且该变化包括但不限于变化的频率、变化的幅度。那么,实时检测室内侧冷媒的变化是指在空调器启动后,实时监测室内侧换热器、室内侧冷媒管路中冷媒的状态变化。
S20、基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态。
具体而言,由于空调室内机与空调室外机相互不通讯,且无法通过外部信号盒进通讯,因此空调室内机无法直接获取空调室外机是否进入回油的讯息。但是,当空调室外机进入回油时,压缩机的工作频率会发生骤变,而压缩机工作频率的改变,会引起空调器中的冷媒随之发生变化,自然,室内侧冷媒也会随之变化。因此,在空调器运行的过程中,可基于室内侧冷媒的变化,以判断压缩机的工作频率是否发生骤变,进而判断空调室外机是否进入回油状态。如此,便可在空调室内机与空调室外机相互不通讯的基础上,实现空调室内机对空调室外机是否进入回油的检测。值得说明的是,将空调室内机与空调室外机设计为相互不通讯,其原因可能在于空调室内机与空调室外机建立通讯的成本过高或难度过大,不适于实际使用。也就是说,由于本申请的技术方案在空调室内机与空调室外机相互不通讯的基础上实现,故而还具有成本低廉、普适性高的优点。
S30、若判定空调室外机进入回油状态,则调节空调室内机电子膨胀阀以适配所述空调室外机的回油。
具体而言,当基于室内侧冷媒的变化判断空调室外机进入回油状态时,则需调节空调室内机电子膨胀阀,该电子膨胀阀安装于室内侧的冷媒管路上,通过调节该电子膨胀阀的开度,能够调节室内侧冷媒管路中冷媒的流量及压力,进而适配空调室外机的回油,以完 成压缩机的正常回油。
值得说明的是,当空调室内机与空调室外机相互不通讯时,空调室内机无法直接获取空调室外机是否进入回油的信息。此时,若空调室外机进入回油状态,那么将导致空调室内机仍按照正常运行控制,进而会由于空调室内机电子膨胀阀没有对应调节,而出现长期回油不畅,引起压缩机磨损或使整机温度压力过高而导致停机,降低设备可靠性。
针对上述问题,本申请的空调室内机电子膨胀阀控制方法,在空调器启动后,通过实时监测室内侧冷媒的变化以判断空调室外机是否进入回油状态,再于判定空调室外机进入回油状态后,调节空调室内机电子膨胀阀以适配空调室外机的回油,如此,便可在空调室外机进入回油状态时,及时调节空调室内机电子膨胀阀,而避免空调器出现回油不畅的问题。可见,相较于空调室外机回油时,空调室内机无法及时调节电子膨胀阀的空调器而言,本申请的空调室内机电子膨胀阀控制方法具有延长压缩机使用寿命、提高空调器工作可靠性的优点。
值得说明的是,由于本申请的技术方案中空调室内机无需与空调室外机通讯,因此通过本申请的技术方案,还可实现不同类型的空调室内机和空调室外机的配合使用。
具体地,通过实时监测室内换热器温度的第一变化和连通于室内换热器与压缩机之间的低压管温度的第二变化以确定室内侧冷媒的变化。
具体而言,冷媒温度变化是压缩机工作频率改变而引起的冷媒变化之一,相较于流量变化与压力变化等冷媒变化,温度是相对容易检测的数据,不仅检测成本低,且数据易于处理,有助于直观地确定冷媒的变化。在本实施例中,可通过检测室内换热器温度的第一变化和连通于室内换热器与压缩机之间的低压管温度的第二变化,以确定冷媒温度变化。这其中,可通过在室内侧换热器的盘管上设置感温包(温度传感器)以检测室内侧换热器的温度变化。而连通于室内换热器与压缩机之间的低压管,是指连通于室内换热器与压缩机之间,且未设有电子膨胀阀的冷媒管。这其中,获取该低压管温度的第二变化以确定室内侧冷媒的温度变化,是由于该低压管中冷媒的状态不受电子膨胀阀的影响,而能够更为准确地体现压缩机工作频率的变化。相应的,若检测连通于压缩机与空调室内机之间且设有电子膨胀阀的冷媒管的温度,则会因为电子膨胀阀会改变管内冷媒的状态(温度、压力等),而影响对空调室外机是否进入回油状态的判断。值得说明的是,由于是检测室内侧冷媒的温度变化,因此可通过在低压管设于室内侧的一端设置感温包(温度传感器)的方式,以检测低压管的温度变化。当然,本申请的设计不限于此,在其他实施例中,也可通过其他变化以确定冷媒的变化。
相应的,在上述实施例的基础上,所述基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态,包括:
判断所述第一变化和第二变化中的任一者是否符合回油时的预设条件。
具体而言,通过上述实施例可知,无论是室内侧换热器的第一变化还是低压管温度的第二变化,均能够体现室内侧冷媒的温度变化。那么,通过判断第一变化和第二变化中的任一者是否符合回油时的预设条件,以判断空调室外机是否进入回油状态,能够提高对空调室外机是否进入回油状态判断的容错率,并有利于及时确定空调室外机进入回油状态,以及时调节空调室内机电子膨胀阀,从而有利于提高空调器工作的可靠性。这其中,回油时的预设条件用于判断空调室外机是否进入回油状态,其可以根据空调器具体产品型号、实际工作环境等的不同,而进行适应性的调整。
如图3所示,在一实施例中,判断所述第一变化是否符合回油时的预设条件,包括:
S21、在制冷模式下,每间隔第一预设时长获取一次室内换热器的第一温度。
具体而言,当空调器以制冷模式运行时,每隔第一预设时长检测一次室内换热器盘管的温度,以作为第一温度。示例性的,该第一预设时长可以为1秒、2秒、3秒、4秒、5秒、6秒、7秒、8秒、9秒、10秒等。
S22、若任意相邻两个所述第一温度中,在后的第一温度相较于在先的第一温度的降低 值大于第一预设阈值,则判定空调室内机进入回油状态。
具体而言,在得到至少两个第一温度后,计算相邻两个第一温度的差值,由于在制冷模式下,当空调室外机进入回油状态时,压缩机工作频率骤变(突然升高)会导致冷媒温度快速降低。因此,可通过室内侧冷媒在第一预设时长内的降低幅度,以判断空调室外机是否进入回油。即是说,该两个第一温度的差值应为相邻两个第一温度中,在后的第一温度相较于在先的第一温度的降低值,若该降低值大于第一预设阈值,则可判定空调室外机进入回油状态。值得说明的是,该第一预设阈值可根据空调器具体产品型号、实际工作环境等的不同,而进行适应性的调整。示例性的,该第一预设阈值可以为1℃、2℃、3℃、4℃、5℃、6℃等。
如图3所示,在一实施例中,判断所述第一变化是否符合回油时的预设条件,还包括:
S23、在制热模式下,每间隔第二预设时长获取一次室内换热器的第二温度。
具体而言,当空调器以制热模式运行时,每隔第二预设时长检测一次室内换热器盘管的温度,以作为第二温度。示例性的,该第二预设时长可以为1秒、2秒、3秒、4秒、5秒、6秒、7秒、8秒、9秒、10秒等。
S24、若任意相邻两个所述第二温度中,在后的第二温度相较于在先的第二温度的升高值大于第二预设阈值,则判定空调室内机进入回油状态。
具体而言,在得到至少两个第二温度后,计算相邻两个第二温度的差值,由于在制热模式下,当空调室外机进入回油状态时,压缩机工作频率骤变(突然升高)会导致冷媒温度快速升高。因此,可通过室内侧冷媒在第二预设时长内的升高幅度,以判断空调室外机是否进入回油。即是说,该两个第二温度的差值应为相邻两个第二温度中,在后的第二温度相较于在先的第二温度的升高值,若该升高值大于第二预设阈值,则可判定空调室外机进入回油状态。值得说明的是,该第二预设阈值可根据空调器具体产品型号、实际工作环境等的不同,而进行适应性的调整。示例性的,该第二预设阈值可以为2℃、3℃、4℃、5℃、6℃、7℃、8℃、9℃等。
值得说明的是,为简化温度数据的获取,在某些实施例中,该第一预设时长可以与第二预设时长相等。
如图4所示,在一实施例中,判断所述第二变化是否符合回油时的预设条件,包括:
S25、在制冷模式下,每间隔第三预设时长获取一次低压管的第三温度。
具体而言,当空调器以制冷模式运行时,每隔第三预设时长检测一次低压管的温度,以作为第三温度。示例性的,该第三预设时长可以为1秒、2秒、3秒、4秒、5秒、6秒、7秒、8秒、9秒、10秒等。
S26、当空调室内机的出风风速不变时,若任意相邻两个所述第三温度中,在后的第三温度相较于在先的第三温度的降低值大于第三预设阈值,则判定空调室内机进入回油状态。
具体而言,由于空调室内机出风风速的改变,会影响低压管中冷媒的温度,从而影响对冷媒温度变化的判断,易导致误差。因此,在通过低压管的温度变化以确定室内侧冷媒的温度变化时,需在空调室内机出风风速不变的前提下进行。该空调室内机的出风风速不变是指在获取任意相邻两个第三温度的过程中,空调室内机的风挡(风速等级)不发生改变。具体地,在得到至少两个第三温度后,计算相邻两个第三温度的差值,由于在制冷模式下,空调室外机进入回油会导致冷媒温度快速降低。因此,该两个第三温度的差值为相邻两个第三温度中,在后的第三温度相较于在先的第三温度的降低值,若该降低值大于第三预设阈值,则可判定空调室外机进入回油状态。值得说明的是,该第三预设阈值可根据空调器具体产品型号、实际工作环境等的不同,而进行适应性的调整。示例性的,该第三预设阈值可以为1℃、2℃、3℃、4℃、5℃、6℃等。
如图4所示,在一实施例中,判断所述第二变化是否符合回油时的预设条件,还包括:
S27、在制热模式下,每间隔第四预设时长获取一次低压管的第四温度。
具体而言,当空调器以制热模式运行时,每隔第四预设时长检测一次低压管的温度, 以作为第四温度。示例性的,该第四预设时长可以为1秒、2秒、3秒、4秒、5秒、6秒、7秒、8秒、9秒、10秒等。
S28、当空调室内机的出风风速不变时,若任意相邻两个所述第四温度中,在后的第四温度相较于在先的第四温度的升高值大于第四预设阈值,则判定空调室内机进入回油状态。
具体而言,由于空调室内机出风风速的改变,会影响低压管中冷媒的温度,从而影响对冷媒温度变化的判断,易导致误差。因此,在通过低压管的温度变化以确定室内侧冷媒的温度变化时,需在空调室内机出风风速不变的前提下进行。该空调室内机的出风风速不变是指在获取任意相邻两个第四温度的过程中,空调室内机的风挡(风速等级)不发生改变。具体地,在得到至少两个第四温度后,计算相邻两个第四温度的差值,由于在制热模式下,空调室外机进入回油会导致冷媒温度快速升高。因此,该两个第四温度的差值为相邻两个第四温度中,在后的第四温度相较于在先的第四温度的升高值,若该升高值大于第四预设阈值,则可判定空调室外机进入回油状态。值得说明的是,该第四预设阈值可根据空调器具体产品型号、实际工作环境等的不同,而进行适应性的调整。示例性的,该第四预设阈值可以为1℃、2℃、3℃、4℃、5℃、6℃等。
值得说明的是,为简化温度数据的获取,在某些实施例中,该第三预设时长可以与第四预设时长相等。
如图5所示,在一实施例中,若判定空调室外机进入回油状态,则调节空调室内机电子膨胀阀以适配所述空调室外机的回油,包括:
S31、若在制冷模式下判定空调室外机进入回油状态,则根据第一预设参数调节所述空调室内机电子膨胀阀的开度。
具体而言,该第一预设参数为空调器在制冷模式下,空调器室外机进入回油状态时,空调室内机电子膨胀阀的调节参数。示例性的,该第一预设参数可以为回油步数Lc1,该Lc1可以为200步、225步、250步、275步、300步、325步、350步、375步、400步、425步、450步,475步、500步等。以Lc1为350步为例,若在制冷模式下判定空调室外机进入回油状态,则打开空调室内机电子膨胀阀的开度至回油步数350步。
S32、若在制热模式下判定空调室外机进入回油状态,则根据第二预设参数调节所述空调室内机电子膨胀阀的开度。
具体而言,该第二预设参数为空调器在制热模式下,空调器室外机进入回油状态时,空调室内机电子膨胀阀的调节参数。示例性的,该第二预设参数可以为回油步数Lc2,该Lc2可以为300步、320步、340步、360步、380步、400步、420步、440步、460步、480步、500步、520步、540步、560步、580步、600步等。以Lc2为480步为例,若在制热模式下判定空调室外机进入回油状态,则打开空调室内机电子膨胀阀的开度至回油步数480步。
如图6所示,在一实施例中,所述方法还包括:
S40、在判定空调室外机进入回油状态后,基于室内侧冷媒的变化判断所述空调室外机是否退出回油状态。
具体而言,当空调室外机退出回油时,压缩机的工作频率会回复至回油前的频率,即是说,当空调室外机退出回油时,压缩机的工作频率也会发生骤变,而引起空调器中的冷媒发生变化。那么,相应的,在判定空调室外机进入回油状态后,可基于室内侧冷媒的变化判断所述空调室外机是否退出回油状态。
S50、若判定所述空调室外机退出回油状态,则基于空调室内机电子膨胀阀的自动控制程序自动控制所述空调室内机电子膨胀阀。
具体而言,空调室内机电子膨胀阀的自动控制程序是指空调室内机所预设的电子膨胀阀自动控制程序,不同型号的空调室内机预设有不同自动控制程序,该自动控制程序主要用于控制电子膨胀阀,以适应当前用户输入的设定温度。由于空调室外机退出回油后,空调室内机也要相应的解除回油控制,以使空调器能够恢复回油前的工作状态,而空调器恢 复回油前的工作状态时,需基于自动控制程序对空调室内机电子膨胀阀进行自动控制。因此,当判定所述空调室外机退出回油状态,需基于空调室内机电子膨胀阀的自动控制程序自动控制空调室内机电子膨胀阀。
可以理解,在空调室外机进入回油状态后,通过继续监测室内侧冷媒的变化,以判断空调室外机是否退出回油状态,如此,空调室内机无需与空调室外机通讯,便可判断空调室外机是否退出回油状态;而在判定空调室外机退出回油状态后,自动控制电子膨胀阀,则有利于空调器及时恢复回油前的工作状态,从而有利于提升舒适性,以提升用户的使用体验。
具体地,所述基于室内侧冷媒的变化判断所述空调室外机是否退出回油状态,包括:
判断室内换热器温度的第一变化和连通于室内换热器与压缩机之间的低压管温度的第二变化中的任一者是否符合退出回油时的预设条件。
具体而言,无论是室内侧换热器的第一变化还是低压管温度的第二变化,均能够体现室内侧冷媒温度的变化。可以理解,由于可通过室内侧冷媒温度变化以判断空调室外机是否进入回油状态,那么,继续通过室内侧冷媒温度变化判断空调室外机是否退出回油状态,可无需再次获取其他类型的数据便可判断空调室外机是否退出回油状态,从而有利于精简对空调室外机是否进入/退出回油状态判断的条件,进而有利于降低判断难度和方法实现所需成本。这其中,通过判断第一变化和第二变化中的任一者是否符合退出回油时的预设条件,以判断空调室外机是否退出回油状态,能够提高对空调室外机退出回油状态判断的容错率,并有利于及时确定空调室外机退出回油状态,以及时地调节空调室内机电子膨胀阀,使空调器尽快恢复回油前的工作状态,而有利于提高空调器的舒适性。这其中,退出回油时的预设条件用于判断空调室外机是否退出回油状态,其可以根据空调器具体产品型号、实际工作环境等的不同,而进行适应性的调整。
如图7所示,在一实施例中,判断室内换热器温度的第一变化是否符合退出回油时的预设条件,包括:
S41、在制冷模式下,每间隔第五预设时长获取一次室内换热器的第五温度。
具体而言,当空调器以制冷模式运行时,每隔第五预设时长检测一次室内换热器盘管的温度,以作为第五温度。示例性的,该第五预设时长可以为1秒、2秒、3秒、4秒、5秒、6秒、7秒、8秒、9秒、10秒等。
S42、若任意相邻两个所述第五温度中,在后的第五温度相较于在先的第五温度的升高值大于第五预设阈值,则判定空调室内机退出回油状态。
具体而言,在得到至少两个第五温度后,计算相邻两个第五温度的差值,由于在制冷模式下,当空调室外机进入回油,压缩机工作频率骤变(突然升高)会导致冷媒温度快速降低。而当空调室外机退出回油时,压缩机恢复回油前的工作频率会造成冷媒温度快速升高。因此,可通过室内侧冷媒在第五预设时长内的升高幅度,以判断空调室外机是否进入回油。即是说,该两个第五温度的差值应为相邻两个第五温度中,在后的第五温度相较于在先的第五温度的升高值,若该升高值大于第五预设阈值,则可判定空调室外机进入回油状态。值得说明的是,该第五预设阈值可根据空调器具体产品型号、实际工作环境等的不同,而进行适应性的调整。示例性的,该第五预设阈值可以为1℃、2℃、3℃、4℃、5℃、6℃等。
需要说明的是,此处采用室内换热器的温度变化以判断空调室外机是否退出回油状态,是由于在制冷模式下,低压管中的冷媒自室内换热器流向压缩机,那么也就是说,该室内换热器的温度变化能够更早的反映压缩机工作频率的变化,从而能够更早的判断空调室外机是否退出回油状态,进而能够尽早的调节空调室内机电子膨胀阀,以使空调器能够尽快恢复回油前的工作状态,而有利于提高舒适性,以提升用户体验。当然,于其他实施例中,制冷模式下也可通过低压管的温度变化以判断空调室外机是否退出回油状态。
值得说明的是,为简化温度数据的获取、降低判断难度,在本申请的某些实施例中,该第五预设时长与上述实施例中的第一预设时长相等,那么该第五温度也可视为第一温度。不同的是,制冷模式下判断空调室外机是否进入回油状态所依据的是,相邻两个第一温度中,在后的第一温度相较于在先的第一温度的降低值;而判断空调室外机是否退出回油状态所依据的是,相邻两个第五温度中,在后的第五温度相较于在先的第五温度的升高值。
如图7所示,在一实施例中,判断连通于室内换热器与压缩机之间的低压管温度的第二变化是否符合退出回油时的预设条件,包括:
S43、在制热模式下,每间隔第六预设时长获取一次低压管的第六温度。
具体而言,当空调器以制热模式运行时,每隔第六预设时长检测一次低压管的温度,以作为第六温度。示例性的,该第六预设时长可以为1秒、2秒、3秒、4秒、5秒、6秒、7秒、8秒、9秒、10秒等。
S44、若任意相邻两个所述第六温度中,在后的第六温度相较于在先的第六温度的降低值大于第六预设阈值,则判定空调室内机退出回油状态。
具体而言,在得到至少两个第六温度后,计算相邻两个第六温度的差值,由于在制热模式下,空调室外机进入回油会导致冷媒温度快速升高。而当空调室外机退出回油时,压缩机恢复回油前的工作频率会造成冷媒温度快速降低。因此,该两个第六温度的差值为相邻两个第六温度中,在后的第六温度相较于在先的第六温度的降低值,若该降低值大于第六预设阈值,则可判定空调室外机进入回油状态。值得说明的是,该第六预设阈值可根据空调器具体产品型号、实际工作环境等的不同,而进行适应性的调整。示例性的,该第六预设阈值可以为1℃、2℃、3℃、4℃、5℃、6℃等。
需要说明的是,此处采用低压管的温度变化以判断空调室外机是否退出回油状态,是由于在制热模式下,低压管中的冷媒自压缩机流向室内换热器,那么也就是说,该低压管的温度变化能够更早的反映压缩机工作频率的变化,从而能够更早的判断空调室外机是否退出回油状态,进而能够尽早的调节空调室内机电子膨胀阀,以使空调器能够尽快恢复回油前的工作状态,而有利于提高舒适性,以提升用户体验。当然,于其他实施例中,制热模式下也可通过室内换热器的温度变化以判断空调室外机是否退出回油状态。
值得说明的是,为简化温度数据的获取、降低判断难度,在本申请的某些实施例中,该第六预设时长与上述实施例中的第四预设时长相等,那么该第六温度也可视为第四温度。不同的是,制热模式下判断空调室外机是否进入回油状态所依据的是,相邻两个第四温度中,在后的第四温度相较于在先的第四温度的升高值;而判断空调室外机是否退出回油状态所依据的是,相邻两个第六温度中,在后的第六温度相较于在先的第六温度的降低值。
如图8所示,在一实施例中,所述方法还包括:
S60、在判定空调室外机进入回油状态后,统计空调室外机进入回油状态后空调器的运行时长,并基于所述运行时长判断所述空调室外机是否退出回油状态。
具体而言,通常空调器的回油是有时间限制的,因此可通过统计空调室外机进入回油状态后空调器的运行时长,并基于该运动时长便可判断出空调室外机退出回油状态。可以理解,通过这种方式判断空调室外机是否退出回油状态,简单直接,且判断准确率高。
值得说明的是,当空调室外机进入回油状态后,只需室内侧冷媒的温度变化和空调器运行时长两者中任一者满足判断条件,即可认为空调室外机退出回油状态。
在一实施例中,所述基于所述运行时长判断所述空调室外机是否退出回油状态,包括:
若所述运行时长大于预设阈值,则判定空调室外机退出回油状态。
具体而言,该预设阈值可根据空调器具体产品型号、实际工作环境等的不同,而进行适应性的调整。示例性的,该预设阈值可以为5分钟、6分钟、7分钟、8分钟、9分钟、10分钟、11分钟、12分钟等。
在一实施例中,所述于空调室内机电子膨胀阀的自动控制程序控制所述空调室内机电子膨胀阀,包括:
若基于室内侧冷媒的变化判定空调室外机退出回油状态,则将所述室内机电子膨胀阀的步数调节至空调室外机进入回油状态前的步数,再根据所述自动控制程序自动控制所述室内机电子膨胀阀。
具体而言,由于空调室内机压缩机工作频率的改变,能够第一时间体现于冷媒的变化,因此,通过室内侧冷媒的变化能够在最短的时间判断空调室外机是否退出回油状态。那么,当基于室内侧冷媒的变化判定空调室外机退出回油状态时,将室内机电子膨胀阀的步数调节至空调室外机进入回油状态前的步数,能够在最短的时间内使空调室内机与空调室外机同步,而有利于尽快地使空调器恢复回油前的工作状态,从而有利于提高舒适性,以提升用户体验。
在一实施例中,所述于空调室内机电子膨胀阀的自动控制程序控制所述空调室内机电子膨胀阀,还包括:
若基于空调室外机进入回油状态后空调器的运行时长判定空调室外机退出回油状态,则直接根据所述自动控制程序自动控制所述室内机电子膨胀阀。
具体而言,当运行时长满足判断条件(大于预设阈值)后,可认为空调室外机必然已经退出回油状态,这其中,考虑到空调室外机可能在运行时长满足判断条件前便已经退出回油状态,并在非回油模式下运行了一段时间,此时再将室内机电子膨胀阀的步数调节至空调室外机进入回油状态前的步数,反而会造成空调室内机与空调室外机不同步,而影响空调器的工作效果。因此,若基于运行时长判定空调室外机退出回油状态,直接根据所述自动控制程序自动控制所述室内机电子膨胀阀即可。
此外,参照图9,本申请实施例还提出一种空调器,所述空调器包括:
监测模块110,用于在空调器启动后,实时监测室内侧冷媒的变化;
判断模块120,用于基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态;
调节模块130,用于在判定空调室外机进入回油状态后,调节空调室内机电子膨胀阀以适配所述空调室外机的回油。
其中,空调器的各个功能模块实现的步骤可参照本申请空调室内机电子膨胀阀控制方法的各个实施例,此处不再赘述。
此外,本申请实施例还提出一种计算机可读存储介质,计算机可读存储介质可以是硬盘、多媒体卡、SD卡、闪存卡、SMC、只读存储器(ROM)、可擦除可编程只读存储器(EPROM)、便携式紧致盘只读存储器(CD-ROM)、USB存储器等中的任意一种或者几种的任意组合。计算机可读存储介质中包括空调室内机电子膨胀阀控制程序10,本申请之计算机可读存储介质的具体实施方式与上述空调室内机电子膨胀阀控制方法以及服务器1的具体实施方式大致相同,在此不再赘述。
本领域内的技术人员应明白,本申请的实施例可提供为方法、***、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装 置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。
Claims (15)
- 一种空调室内机电子膨胀阀控制方法,其中,包括:在空调器启动后,实时监测室内侧冷媒的变化;基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态;在空调室外机进入回油状态时,调节空调室内机电子膨胀阀以适配所述空调室外机的回油。
- 如权利要求1所述的空调室内机电子膨胀阀控制方法,其中,通过实时监测室内换热器温度的第一变化和连通于室内换热器与压缩机之间的低压管温度的第二变化以确定室内侧冷媒的变化;所述基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态,包括:判断所述第一变化和所述第二变化中的任一者是否符合回油时的预设条件。
- 如权利要求2所述的空调室内机电子膨胀阀控制方法,其中,判断所述第一变化是否符合回油时的预设条件,包括:在制冷模式下,每间隔第一预设时长获取一次室内换热器的第一温度;任意相邻两个所述第一温度中,在后的第一温度相较于在先的第一温度的降低值大于第一预设阈值时,判定空调室内机进入回油状态;和/或,在制热模式下,每间隔第二预设时长获取一次室内换热器的第二温度;任意相邻两个所述第二温度中,在后的第二温度相较于在先的第二温度的升高值大于第二预设阈值时,判定空调室内机进入回油状态。
- 如权利要求2所述的空调室内机电子膨胀阀控制方法,其中,判断所述第二变化是否符合回油时的预设条件,包括:在制冷模式下,每间隔第三预设时长获取一次低压管的第三温度;当空调室内机的出风风速不变,任意相邻两个所述第三温度中,在后的第三温度相较于在先的第三温度的降低值大于第三预设阈值时,判定空调室内机进入回油状态;和/或,在制热模式下,每间隔第四预设时长获取一次低压管的第四温度;当空调室内机的出风风速不变,任意相邻两个所述第四温度中,在后的第四温度相较于在先的第四温度的升高值大于第四预设阈值时,判定空调室内机进入回油状态。
- 如权利要求1所述的空调室内机电子膨胀阀控制方法,其中,所述在判定空调室外机进入回油状态时,调节空调室内机电子膨胀阀以适配所述空调室外机的回油,包括:在制冷模式下判定空调室外机进入回油状态时,根据第一预设参数调节所述空调室内机电子膨胀阀的开度;在制热模式下判定空调室外机进入回油状态时,根据第二预设参数调节所述空调室内机电子膨胀阀的开度。
- 如权利要求1至5中任一项所述的空调室内机电子膨胀阀控制方法,其中,所述方法还包括:在判定空调室外机进入回油状态后,基于室内侧冷媒的变化判断所述空调室外机是否退出回油状态;在判定所述空调室外机退出回油状态时,基于空调室内机电子膨胀阀的自动控制程序自动控制所述空调室内机电子膨胀阀。
- 如权利要求6所述的空调室内机电子膨胀阀控制方法,其中,所述基于室内侧冷媒的变化判断所述空调室外机是否退出回油状态,包括:判断室内换热器温度的第一变化和连通于室内换热器与压缩机之间的低压管温度的第二变化中的任一者是否符合退出回油时的预设条件。
- 如权利要求7所述的空调室内机电子膨胀阀控制方法,其中,判断室内换热器温度的第一变化是否符合退出回油时的预设条件,包括:在制冷模式下,每间隔第五预设时长获取一次室内换热器的第五温度;任意相邻两个所述第五温度中,在后的第五温度相较于在先的第五温度的升高值大于第五预设阈值时,判定空调室内机退出回油状态。
- 如权利要求7所述的空调室内机电子膨胀阀控制方法,其中,判断连通于室内换热器与压缩机之间的低压管温度的第二变化是否符合退出回油时的预设条件,包括:在制热模式下,每间隔第六预设时长获取一次低压管的第六温度;在任意相邻两个所述第六温度中,在后的第六温度相较于在先的第六温度的降低值大于第六预设阈值时,判定空调室内机退出回油状态。
- 如权利要求6所述的空调室内机电子膨胀阀控制方法,其中,所述方法还包括:在判定空调室外机进入回油状态后,统计空调室外机进入回油状态后空调器的运行时长,并基于所述运行时长判断所述空调室外机是否退出回油状态。
- 如权利要求6所述的空调室内机电子膨胀阀控制方法,其中,所述于空调室内机电子膨胀阀的自动控制程序控制所述空调室内机电子膨胀阀,包括:基于室内侧冷媒的变化判定空调室外机退出回油状态时,将所述室内机电子膨胀阀的步数调节至空调室外机进入回油状态前的步数,再根据所述自动控制程序自动控制所述室内机电子膨胀阀。
- 如权利要求1所述的空调室内机电子膨胀阀控制方法,其中,所述方法应用于空调室内机和空调室外机相互独立工作的空调器。
- 一种空调器,其中,包括:监测模块,用于在空调器启动后,实时监测室内侧冷媒的变化;判断模块,用于基于所述室内侧冷媒的变化判断空调室外机是否进入回油状态;调节模块,用于在判定空调室外机进入回油状态后,调节空调室内机电子膨胀阀以适配所述空调室外机的回油。
- 一种空调室内机电子膨胀阀控制设备,其中,包括存储器、处理器及存储在存储器上并可在处理器上运行的空调室内机电子膨胀阀控制程序,所述处理器执行所述空调室内机电子膨胀阀控制程序时实现如权利要求1-12中任一项所述的空调室内机电子膨胀阀控制方法。
- 一种计算机可读存储介质,其中,所述计算机可读存储介质上存储有空调室内机电子膨胀阀控制程序,所述空调室内机电子膨胀阀控制程序被处理器执行时实现如权利要求1-12中任一项所述的空调室内机电子膨胀阀控制方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21870919.4A EP4170250A4 (en) | 2020-09-28 | 2021-06-30 | AIR CONDITIONING SYSTEM AND METHOD FOR CONTROLLING AN ELECTRONIC EXPANSION VALVE OF AN INDOOR UNIT THEREOF AND APPARATUS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011047418.XA CN114279060B (zh) | 2020-09-28 | 2020-09-28 | 空调器及其室内机电子膨胀阀控制方法、设备 |
CN202011047418.X | 2020-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022062540A1 true WO2022062540A1 (zh) | 2022-03-31 |
Family
ID=80846187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2021/103490 WO2022062540A1 (zh) | 2020-09-28 | 2021-06-30 | 空调器及其室内机电子膨胀阀控制方法、设备 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4170250A4 (zh) |
CN (1) | CN114279060B (zh) |
WO (1) | WO2022062540A1 (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115930407B (zh) * | 2022-11-28 | 2024-08-06 | 珠海格力电器股份有限公司 | 空调控制方法和控制装置、空调***及存储介质 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2460899Y (zh) * | 2001-01-10 | 2001-11-21 | 广东科龙电器股份有限公司 | 制冷量、制热量可变的一拖多热泵设备 |
CN107747826A (zh) * | 2017-11-13 | 2018-03-02 | 珠海格力电器股份有限公司 | 空调*** |
CN108375256A (zh) * | 2018-01-16 | 2018-08-07 | 珠海格力电器股份有限公司 | 空调自动回油控制方法及装置 |
CN108613434A (zh) * | 2018-04-12 | 2018-10-02 | 珠海格力电器股份有限公司 | 空调的回油控制方法及装置 |
CN208205501U (zh) * | 2018-04-12 | 2018-12-07 | 珠海格力电器股份有限公司 | 空调的回油控制*** |
CN109539407A (zh) * | 2018-11-19 | 2019-03-29 | 珠海格力电器股份有限公司 | 多联机***及其控制方法 |
CN110296547A (zh) * | 2019-07-04 | 2019-10-01 | 宁波奥克斯电气股份有限公司 | 一种多联机回油控制方法、***及空调器 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5135200B2 (ja) * | 2008-12-24 | 2013-01-30 | 本田技研工業株式会社 | 変速機のオイル加熱装置 |
CN205783938U (zh) * | 2016-05-19 | 2016-12-07 | 珠海格力电器股份有限公司 | 空调***及具有其的空调器 |
CN106403081B (zh) * | 2016-09-07 | 2019-08-27 | 广东美的暖通设备有限公司 | 多联机及其控制方法 |
CN106524593B (zh) * | 2016-11-08 | 2019-04-30 | 广东美的暖通设备有限公司 | 风冷热泵空调机组及其压缩机的回油控制方法和装置 |
CN107940811A (zh) * | 2017-12-25 | 2018-04-20 | 广东美的制冷设备有限公司 | 运行控制方法、装置、空调器和计算机可读存储介质 |
CN110762901B (zh) * | 2019-11-11 | 2022-01-18 | 宁波奥克斯电气股份有限公司 | 一种辅助回油控制方法、控制装置与空调器 |
-
2020
- 2020-09-28 CN CN202011047418.XA patent/CN114279060B/zh active Active
-
2021
- 2021-06-30 EP EP21870919.4A patent/EP4170250A4/en active Pending
- 2021-06-30 WO PCT/CN2021/103490 patent/WO2022062540A1/zh unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2460899Y (zh) * | 2001-01-10 | 2001-11-21 | 广东科龙电器股份有限公司 | 制冷量、制热量可变的一拖多热泵设备 |
CN107747826A (zh) * | 2017-11-13 | 2018-03-02 | 珠海格力电器股份有限公司 | 空调*** |
CN108375256A (zh) * | 2018-01-16 | 2018-08-07 | 珠海格力电器股份有限公司 | 空调自动回油控制方法及装置 |
CN108613434A (zh) * | 2018-04-12 | 2018-10-02 | 珠海格力电器股份有限公司 | 空调的回油控制方法及装置 |
CN208205501U (zh) * | 2018-04-12 | 2018-12-07 | 珠海格力电器股份有限公司 | 空调的回油控制*** |
CN109539407A (zh) * | 2018-11-19 | 2019-03-29 | 珠海格力电器股份有限公司 | 多联机***及其控制方法 |
CN110296547A (zh) * | 2019-07-04 | 2019-10-01 | 宁波奥克斯电气股份有限公司 | 一种多联机回油控制方法、***及空调器 |
Non-Patent Citations (1)
Title |
---|
See also references of EP4170250A4 |
Also Published As
Publication number | Publication date |
---|---|
CN114279060B (zh) | 2023-05-26 |
CN114279060A (zh) | 2022-04-05 |
EP4170250A1 (en) | 2023-04-26 |
EP4170250A4 (en) | 2023-12-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105928280B (zh) | 空调器压缩机的保护方法和装置 | |
CN107621048B (zh) | 一种空调的控制方法及装置 | |
WO2020199664A1 (zh) | 空调器、空调器运行策略的调整方法及装置 | |
CN110579010B (zh) | 一种多联机内机电子膨胀阀控制方法、控制装置及空调器 | |
WO2019109959A1 (zh) | 空调装置及用于判断其运行状态是否正常的方法 | |
CN103851847A (zh) | 空调电子膨胀阀控制***、控制方法及多联机空调室外机 | |
CN102620388B (zh) | 一种限制空调压缩机运行转速的方法 | |
US11313570B2 (en) | Method and device for controlling electric heating of air conditioner compressor | |
CN109780682A (zh) | 冷媒循环***的堵塞检测方法、装置及可读存储介质 | |
CN110805990B (zh) | 空调器及其防凝露控制方法、装置及计算机可读存储介质 | |
CN103335377A (zh) | 空调控制装置及其定时开机的控制方法 | |
WO2022062540A1 (zh) | 空调器及其室内机电子膨胀阀控制方法、设备 | |
CN104406271A (zh) | 一种智能控制空调器低温运行的方法及空调器 | |
CN110749041B (zh) | 一种空调器的运行控制方法、***、空调器及存储介质 | |
US11181291B2 (en) | DC varaiable speed compressor control method and control system | |
CN108917117A (zh) | 空调及其控制方法、装置 | |
CN112880124A (zh) | 一种空调控制方法、装置、存储介质及空调 | |
CN103743068B (zh) | 一种基于能效优化的中央空调冷却塔风机控制方法及*** | |
WO2023020078A1 (zh) | 用于空调的控制方法、装置和服务器 | |
WO2020192597A1 (zh) | 一种空调自动清洗的控制方法及装置 | |
CN105004086A (zh) | 螺杆冷水机组的控制方法、控制装置以及空调器 | |
CN110542234B (zh) | 空调器及其运行控制方法、装置和计算机可读存储介质 | |
CN112664455B (zh) | 一种压缩机的润滑调节方法、装置、电子设备及存储介质 | |
CN105822535A (zh) | 压缩机的控制方法、装置及空调器 | |
CN109405182A (zh) | 一种防凝露模式控制方法与装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21870919 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2021870919 Country of ref document: EP Effective date: 20230117 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |