CN105546752B - Air-conditioner control method and device - Google Patents
Air-conditioner control method and device Download PDFInfo
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- CN105546752B CN105546752B CN201610008930.0A CN201610008930A CN105546752B CN 105546752 B CN105546752 B CN 105546752B CN 201610008930 A CN201610008930 A CN 201610008930A CN 105546752 B CN105546752 B CN 105546752B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioner control method, which obtains outdoor environment temperature comprising steps of when air conditioner executes power-off operation；When the outdoor environment temperature is less than preset temperature threshold, control compressor is operated with predeterminated frequency, and outdoor unit electric expansion valve is adjusted to the first default aperture, and electronic expansion valve of indoor unit is closed；When pipeline air pressure between the compressor and gas-liquid separator is less than preset pressure threshold value, it is out of service to control the compressor.The invention also discloses a kind of air conditioner controlling devices.The present invention can effectively solve the flooded starts problem of compressor.
Description
Technical field
The present invention relates to air conditioner technical field more particularly to a kind of air-conditioner control methods and device.
Background technique
During shutdown, compressor is usually to stop running immediately to existing air conditioner.After compressor shutdown, due to compression
Lubricating oil absorbs gaseous refrigerant in machine, makes the air pressure in compressor lower than the air pressure in outdoor heat exchanger and pipeline, thus
The gaseous refrigerant being stored in outdoor heat exchanger and pipeline is caused to enter compressor.And compressor is usually placed in outdoor, works as room
When external environment temperature is lower, gaseous refrigerant will be condensed into liquid within the compressor, therefore, as compressor starting up again
When, due to wherein there is liquid refrigerant, compressor can have flooded starts.
Summary of the invention
The main purpose of the present invention is to provide a kind of air-conditioner control method and devices, it is intended to solve in existing air conditioner
Compressor there is technical issues that.
To achieve the above object, a kind of air-conditioner control method provided by the invention, the air-conditioner control method include
Following steps:
When air conditioner executes power-off operation, outdoor environment temperature is obtained；
When the outdoor environment temperature is less than preset temperature threshold, control compressor is operated with predeterminated frequency, outdoor unit
Electric expansion valve is adjusted to the first default aperture, and electronic expansion valve of indoor unit is closed；
When pipeline air pressure between the compressor and gas-liquid separator is less than preset pressure threshold value, the compression is controlled
Machine is out of service.
Preferably, the control compressor is operated with predeterminated frequency, and outdoor unit electric expansion valve is adjusted to first and default opens
Before the step of degree, electronic expansion valve of indoor unit is closed, the air-conditioner control method includes:
When the outdoor environment temperature is less than preset temperature threshold, the operational mode of air conditioner is detected；
When the operational mode of air conditioner is heating mode, executes the control compressor and is operated with the first predeterminated frequency,
The step of outdoor unit electric expansion valve is adjusted to the first default aperture, and electronic expansion valve of indoor unit is closed.
Preferably, described when the outdoor environment temperature is less than preset temperature threshold, detect the operational mode of air conditioner
The step of after, the air-conditioner control method further include:
When the operational mode of air conditioner is refrigeration mode, control compressor is operated with the second predeterminated frequency, indoor electromechanical
Sub- expansion valve is adjusted to the second default aperture, and outdoor unit electric expansion valve is closed；
When pipeline air pressure between the compressor and gas-liquid separator is less than preset pressure threshold value, the compression is controlled
Machine is out of service.
Preferably, after the step of acquisition outdoor environment temperature, the air-conditioner control method further include:
When the outdoor environment temperature is more than or equal to preset temperature threshold, control compressor is out of service.
Preferably, when receiving shutdown command, execute the acquisition outdoor environment temperature the step of.
In addition, to achieve the above object, the present invention also provides a kind of air conditioner controlling device, the air conditioner controlling device
Include:
Module is obtained, for obtaining outdoor environment temperature when air conditioner executes power-off operation；
Processing module, for when the outdoor environment temperature is less than preset temperature threshold, controlling compressor with default frequency
Rate operating, outdoor unit electric expansion valve are adjusted to the first default aperture, and electronic expansion valve of indoor unit is closed；
Control module is less than preset pressure threshold value for the pipeline air pressure between the compressor and gas-liquid separator
When, it is out of service to control the compressor.
Preferably, the processing module includes:
Detection unit, for detecting the operation mould of air conditioner when the outdoor environment temperature is less than preset temperature threshold
Formula；
Processing unit, for the operational mode in air conditioner be heating mode when, control compressor with the first predeterminated frequency
Operating, outdoor unit electric expansion valve are adjusted to the first default aperture, and electronic expansion valve of indoor unit is closed.
Preferably, the processing unit is also used to:
When the operational mode of air conditioner is refrigeration mode, control compressor is operated with the second predeterminated frequency, indoor electromechanical
Sub- expansion valve is adjusted to the second default aperture, and outdoor unit electric expansion valve is closed.
Preferably, the processing module is also used to:
When the outdoor environment temperature is more than or equal to preset temperature threshold, control compressor is out of service.
Preferably, the acquisition module is used for:
When receiving shutdown command, outdoor environment temperature is obtained.
A kind of air-conditioner control method and device proposed by the present invention work as air conditioner in the air-conditioner control method
When executing power-off operation, if outdoor environment temperature is lower than preset temperature threshold, compressor not hard stop, but with default
Frequency run, and the outer machine electric expansion valve of control room is adjusted to the first default aperture, so that outdoor heat exchanger and pipeline
In refrigerant entered the room in heat exchanger after compressor, while control electronic expansion valve of indoor unit closing, make indoor heat exchange
Refrigerant in device cannot be introduced into outdoor heat exchanger and pipeline, thus the refrigerant in outdoor heat exchanger and pipeline is gradually
It reduces, then pipeline air pressure can be gradually reduced.When the pipeline air pressure between compressor and gas-liquid separator is less than preset pressure threshold value,
Illustrate that refrigerant is substantially not present in outdoor heat exchanger and pipeline, controls compressor shutdown at this time.Therefore, stop in compressor
After machine, enters compressor there is no refrigerant in outdoor heat exchanger and pipeline and be condensed into liquid, avoid compressor again
Flooded starts problem when starting up.
Detailed description of the invention
Fig. 1 is the flow diagram of the air condition of that present invention control method first embodiment；
Fig. 2 is the structural schematic diagram of air conditioner；
Fig. 3 is the flow diagram of the air condition of that present invention control method second embodiment；
Fig. 4 is the functional block diagram of the air condition of that present invention control device first embodiment；
Fig. 5 is the refinement the functional block diagram of processing module in the air condition of that present invention control device second embodiment.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of air-conditioner control method, and referring to Fig.1, Fig. 1 is that the air condition of that present invention control method first is real
Apply the flow diagram of example.
In the first embodiment, which includes:
Step S10 obtains outdoor environment temperature when air conditioner executes power-off operation；
In the present embodiment, as shown in Fig. 2, air conditioner includes: compressor 1, four-way valve 2, outdoor heat exchanger 3, outdoor electromechanics
Sub- expansion valve 4, electronic expansion valve of indoor unit 5, indoor heat exchanger 6 and gas-liquid separator 7.The exhaust outlet of compressor 1 passes through pipeline
It is connect with the 2a of four-way valve 2 mouth, the 2b mouth of four-way valve 2 is connect by pipeline with one end of outdoor heat exchanger 3, outdoor heat exchanger 3
The other end connect with one end of outdoor unit electric expansion valve 4 by pipeline, the other end of outdoor unit electric expansion valve 4 passes through pipe
Road is connect with one end of electronic expansion valve of indoor unit 5, and the other end of electronic expansion valve of indoor unit 5 passes through pipeline and indoor heat exchanger
6 one end connection, the other end of indoor heat exchanger 6 are connect by pipeline with the 2c of four-way valve 2 mouth, and the 2d mouth of four-way valve 2 is through gas
Liquid/gas separator 7 is connect with the gas returning port of compressor 1.Also, it is previously provided with temperature sensor in air conditioner, passes through the temperature
Sensor can detect outdoor environment temperature.When user does not need using air conditioner, namely air conditioner is closed, be executed in air conditioner
When power-off operation, outdoor environment temperature T is obtained by the temperature sensor.
Further, when air conditioner receives shutdown command, outdoor environment temperature is obtained by the temperature sensor
T.For example, when user by remote controller to air conditioner send shutdown command, air conditioner when receiving the shutdown command,
Obtain outdoor environment temperature T.It will be appreciated by persons skilled in the art that air conditioner is in addition to that can receive shutdown command
When, outdoor environment temperature T is obtained, the outdoor environment temperature T can also be obtained in other cases, this is not restricted.Example
Such as, it when operation of air conditioner duration reaches preset operation duration and executes power-off operation, or grows in the shutdown of air conditioner
When up to preset shutdown duration, the outdoor environment temperature T is obtained.
Step S20, when the outdoor environment temperature is less than preset temperature threshold, control compressor is transported with predeterminated frequency
Turn, outdoor unit electric expansion valve is adjusted to the first default aperture, and electronic expansion valve of indoor unit is closed；
After getting the outdoor environment temperature T, the outdoor environment temperature T and preset temperature threshold TaIt is big
It is small.The preset temperature threshold TaValue can carry out flexible setting according to the actual situation, be not limited thereto.If what is obtained is described
Outdoor environment temperature T is less than the preset temperature threshold Ta, then compressor 1 is controlled with predeterminated frequency F operating, and controls outdoor unit
Electric expansion valve 4 is adjusted to the first default aperture B1, the closing of electronic expansion valve of indoor unit 5.Wherein, the described first default aperture B1
It is chosen as the minimum level aperture of the outdoor unit electric expansion valve 4.If the outdoor environment temperature T obtained is more than or equal to
The preset temperature threshold Ta, namely illustrate that current outdoor environment temperature is higher, after compressor 1 is out of service, refrigerant into
Entering compressor 1 will not be condensed, and then mix with lubricating oil, namely be not in compressor 1 again starting up when band liquid
Therefore starting problem is more than or equal to the preset temperature threshold T in the outdoor environment temperature TaWhen, control compressor 1
It is directly out of service.
When the compressor 1 is with predeterminated frequency F operating, the outdoor unit electric expansion valve 4 is adjusted to the first default aperture
B1, in the case that the electronic expansion valve of indoor unit 5 is closed, refrigerant in indoor heat exchanger 6 and corresponding pipeline can not be through
Entered in outdoor heat exchanger 3 and corresponding pipeline by electronic expansion valve of indoor unit 5；And since outdoor unit electric expansion valve 4 is place
Refrigerant in open state, outdoor heat exchanger 3 and corresponding pipeline can be compressed by compressor 1 enters the room heat exchanger
6 and corresponding pipeline in changed so that the refrigerant in outdoor heat exchanger 3 and corresponding pipeline is gradually fully transferred to interior
In hot device 6 and corresponding pipeline.
Step S30, when the pipeline air pressure between the compressor and gas-liquid separator is less than preset pressure threshold value, control
The compressor is out of service.
In the present embodiment, pressure sensing is previously provided on the pipeline between the compressor 1 and gas-liquid separator 7
Device, the pressure sensor are used to detect the pipeline air pressure P between the compressor 1 and the gas-liquid separator 7.Due to described
Compressor 1 with predeterminated frequency F operating, refrigerant in outdoor heat exchanger 3 and corresponding pipeline by the compressor 1 compress into
Enter in indoor heat exchanger 6 and corresponding pipeline, therefore, the pipeline air pressure P between the compressor 1 and the gas-liquid separator 7
It can gradually become smaller.When the pipeline air pressure P between the compressor 1 and gas-liquid separator 7 is less than preset pressure threshold value P0When, namely
Illustrate to be not present in outdoor heat exchanger 3 and corresponding pipeline or there are seldom refrigerants, at this point, controlling the pressure
Contracting machine 1 is out of service, and controls the outdoor unit electric expansion valve 4 and the closing of four-way valve 2, and air conditioner stops working.Due to room
It has been not present in external heat exchanger 3 and corresponding pipeline or there are seldom refrigerant, after compressor 1 stops working,
Refrigerant is just substantially not present in outdoor heat exchanger 3 and corresponding pipeline enters after compressor 1 is condensed and is mixed with lubricating oil, because
This when receiving power-on instruction, when 1 starting up of compressor, would not have band liquid when user is again turned on air conditioner
The problem of starting, namely a possibility that reduce liquid hammer.
Scheme provided in this embodiment does not directly control air conditioner shutdown when air conditioner executes power-off operation, but
Outdoor environment temperature is first obtained, when outdoor environment temperature is less than preset temperature threshold, control compressor 1 is transported with predeterminated frequency
Turn, outdoor unit electric expansion valve 4 is adjusted to the first default aperture, and electronic expansion valve of indoor unit 5 is closed, so that outdoor heat exchanger
3 and corresponding pipeline in refrigerant migration into indoor heat exchanger 6 and corresponding pipeline, until compressor 1 and gas-liquid separation
Pipeline air pressure between device 7, which is less than in preset pressure threshold value namely outdoor heat exchanger 3 and corresponding pipeline, is substantially not present refrigeration
When agent, control compressor 1 is out of service.After compressor 1 is shut down, since there is no in outdoor heat exchanger 3 and corresponding pipeline
Refrigerant enters after compressor 1 is condensed to be mixed with lubricating oil, therefore, compressor 1 again starting up when, avoid band liquid
The problem of starting, reduces harm caused by refrigerant washes away, to improve the reliability of air conditioner.
Further, as shown in figure 3, proposing the air condition of that present invention control method second embodiment based on first embodiment,
In the present embodiment, before the step S20, further includes:
Step S40 detects the operational mode of air conditioner when the outdoor environment temperature is less than preset temperature threshold；
Step S50, when the operational mode of air conditioner is heating mode, control compressor is operated with the first predeterminated frequency,
Outdoor unit electric expansion valve is adjusted to the first default aperture, and electronic expansion valve of indoor unit is closed.
Based on first embodiment, in the present embodiment, after getting the outdoor environment temperature T, the outdoor ring
Border temperature T and preset temperature threshold TaSize.If the outdoor environment temperature T obtained is less than the preset temperature threshold Ta,
Then further detect the operational mode of air conditioner.When air conditioner operates in heating mode, then it is default with first to control compressor 1
Frequency F1Operating, outdoor unit electric expansion valve 4 are adjusted to the described first default aperture B1, the closing of electronic expansion valve of indoor unit 5.
In a heating mode, when the compressor 1 is with the first predeterminated frequency F1Operating, the outdoor unit electronic expansion
Valve 4 is adjusted to the first default aperture B1, in the case that the electronic expansion valve of indoor unit 5 is closed, the interior in higher-pressure region is changed
Refrigerant in hot device 6 and corresponding pipeline can not enter via electronic expansion valve of indoor unit 5 outdoor heat exchanger 3 of low-pressure area with
And in corresponding pipeline；And since outdoor unit electric expansion valve 4 is in the open state, the outdoor heat exchanger 3 and phase of low-pressure area
Answer the refrigerant in pipeline that can be compressed in the indoor heat exchanger 6 and the corresponding pipeline that enter higher-pressure region by compressor 1, thus
So that the refrigerant in the outdoor heat exchanger 3 and corresponding pipeline of low-pressure area is gradually fully transferred to the indoor heat exchanger of higher-pressure region
6 and corresponding pipeline in.Pipeline air pressure P between the compressor 1 and the gas-liquid separator 7 can gradually become smaller.When described
Pipeline air pressure P between compressor 1 and gas-liquid separator 7 is less than preset pressure threshold value P0When, namely illustrate the outdoor of low-pressure area
It has been not present in heat exchanger 3 and corresponding pipeline or there are seldom refrigerant, stopped at this point, controlling the compressor 1
It only runs, and controls the outdoor unit electric expansion valve 4 and the closing of four-way valve 2, air conditioner stops working.Due to the room of low-pressure area
It has been not present in external heat exchanger 3 and corresponding pipeline or there are seldom refrigerant, after compressor 1 stops working,
Just be substantially not present in the outdoor heat exchanger 3 and corresponding pipeline of low-pressure area refrigerant enter after compressor 1 is condensed with lubrication
Oil mixing, therefore, when user is again turned on air conditioner, when receiving power-on instruction, when 1 starting up of compressor, just not
A possibility that there are problems that flooded starts, namely reducing liquid hammer.
Scheme provided in this embodiment, when outdoor environment temperature is less than preset temperature threshold, if detection air conditioner operates in
Heating mode controls compressor 1 then with the first predeterminated frequency F1Operating, it is pre- that outdoor unit electric expansion valve 4 is adjusted to described first
If aperture B1, electronic expansion valve of indoor unit 5 is closed, so that the refrigeration in the outdoor heat exchanger 3 and corresponding pipeline of low-pressure area
Agent is migrated into the indoor heat exchanger 6 and corresponding pipeline of higher-pressure region, until the pipeline between compressor 1 and gas-liquid separator 7
When air pressure is less than refrigerant is substantially not present in the outdoor heat exchanger 3 and corresponding pipeline of preset pressure threshold value namely low-pressure area,
It is out of service to control compressor 1.After compressor 1 is shut down, since there is no in the outdoor heat exchanger 3 and corresponding pipeline of low-pressure area
Refrigerant enter after compressor 1 is condensed and mixed with lubricating oil, therefore, compressor 1 again starting up when, avoid band
The problem of liquid starts, reduces harm caused by refrigerant washes away, to improve the reliability of air conditioner.
Further, the air condition of that present invention control method 3rd embodiment is proposed based on second embodiment, in the present embodiment
In, after the step S40, further includes:
Step a, when the operational mode of air conditioner is refrigeration mode, control compressor is operated with the second predeterminated frequency, room
Interior machine electric expansion valve is adjusted to the second default aperture, and outdoor unit electric expansion valve is closed.
Based on second embodiment, in the present embodiment, when detecting air conditioner and operating in refrigeration mode, then compressor 1 is controlled
With the second predeterminated frequency F2Operating, and control electronic expansion valve of indoor unit 5 and be adjusted to the second default aperture B2, outdoor unit electronics is swollen
Swollen valve 4 is closed.Wherein, the first predeterminated frequency F1With the second predeterminated frequency F2Flexible setting can be carried out according to the actual situation,
This is with no restriction.The second default aperture B2It is chosen as the minimum level aperture of the electronic expansion valve of indoor unit 5.
In cooling mode, when the compressor 1 is with the second predeterminated frequency F2Operating, the indoor unit electronic expansion
Valve 5 is adjusted to the described second default aperture B2, in the case that the outdoor unit electric expansion valve 4 is closed, the room in higher-pressure region
Refrigerant in external heat exchanger 3 and corresponding pipeline can not enter the indoor heat exchange of low-pressure area via outdoor unit electric expansion valve 4
In device 6 and corresponding pipeline；And due to electronic expansion valve of indoor unit 5 be it is in the open state, the indoor heat exchanger 6 of low-pressure area with
And the refrigerant in corresponding pipeline can be compressed in the outdoor heat exchanger 3 and the corresponding pipeline that enter higher-pressure region by compressor 1,
So that the outdoor that the refrigerant in the indoor heat exchanger 6 and corresponding pipeline of low-pressure area is gradually fully transferred to higher-pressure region is changed
In hot device 3 and corresponding pipeline.Pipeline air pressure P between the compressor 1 and the gas-liquid separator 7 can gradually become smaller, when
Pipeline air pressure P between the compressor 1 and gas-liquid separator 7 is less than the preset pressure threshold value P0When, namely illustrate low pressure
It has been not present in the indoor heat exchanger 6 and corresponding pipeline in area or there are seldom refrigerant, at this point, controlling the pressure
Contracting machine 1 is out of service, and controls the electronic expansion valve of indoor unit 5 and the closing of four-way valve 2, and air conditioner stops working.Due to low
It has been not present in the indoor heat exchanger 6 and corresponding pipeline of pressure area or there are seldom refrigerant, stopped in compressor 1
After work, refrigerant is just substantially not present in the indoor heat exchanger 6 and corresponding pipeline of low-pressure area and enters after compressor 1 is condensed
It is mixed with lubricating oil, therefore, when user is again turned on air conditioner, when receiving power-on instruction, 1 starting up of compressor
When, a possibility that would not there are problems that flooded starts, namely reduce liquid hammer.
It is default with second to control compressor 1 when detection air conditioner operates in refrigeration mode for scheme provided in this embodiment
Frequency F2Operating, electronic expansion valve of indoor unit 5 are adjusted to the second default aperture B2, the closing of outdoor unit electric expansion valve 4, so that
Refrigerant migration in the indoor heat exchanger 6 and corresponding pipeline of low-pressure area to higher-pressure region outdoor heat exchanger 3 and respective tube
In road, until the pipeline air pressure between compressor 1 and gas-liquid separator 7 is less than the outdoor of preset pressure threshold value namely low-pressure area
When refrigerant is substantially not present in interior heat exchanger and corresponding pipeline, control compressor 1 is out of service.After compressor 1 is shut down, by
In there is no low-pressure area indoor heat exchanger 6 and corresponding pipeline in refrigerant enter after compressor 1 is condensed with lubricating oil
Mixing, therefore, compressor 1 again starting up when, the problem of avoiding flooded starts, reduces caused by refrigerant washes away
Harm, to further improve the reliability of air conditioner.
The present invention further provides a kind of air conditioner controlling devices, are the air condition of that present invention control device referring to Fig. 4, Fig. 4
The functional block diagram of first embodiment.
In the first embodiment, which includes:
Module 10 is obtained, for obtaining outdoor environment temperature when air conditioner executes power-off operation；
In the present embodiment, outdoor unit of the air conditioner is previously provided with temperature sensor, obtains module 10 and passes through the temperature
Sensor can detect outdoor environment temperature.When user does not need using air conditioner, namely air conditioner is closed, be executed in air conditioner
When power-off operation, module 10 is obtained by the temperature sensor and obtains outdoor environment temperature T.
Further, when receiving shutdown command, module 10 is obtained by the temperature sensor and obtains outdoor environment
Temperature T.For example, being obtained when user sends shutdown command to air conditioner by remote controller when receiving the shutdown command
Modulus block 10 obtains outdoor environment temperature T.It will be appreciated by persons skilled in the art that obtaining module 10 in addition to that can receive
When to shutdown command, outdoor environment temperature T is obtained, the outdoor environment temperature T can also be obtained in other cases, herein not
It is restricted.For example, when operation of air conditioner duration reaches preset operation duration and executes power-off operation, or in the pass of air conditioner
When machine duration reaches preset shutdown duration, obtains module 10 and obtain the outdoor environment temperature T.
Processing module 20, for controlling compressor with default when the outdoor environment temperature is less than preset temperature threshold
Frequency run, outdoor unit electric expansion valve are adjusted to the first default aperture, and electronic expansion valve of indoor unit is closed；
After obtaining module 10 and getting the outdoor environment temperature T, the outdoor environment temperature T of processing module 20
With preset temperature threshold TaSize.The preset temperature threshold TaValue can carry out flexible setting according to the actual situation, herein not
It limits.If the outdoor environment temperature T obtained is less than the preset temperature threshold Ta, then processing module 20 controls compressor
1 with predeterminated frequency F operating, and the outer machine electric expansion valve 4 of control room is adjusted to the first default aperture B1, electronic expansion valve of indoor unit
5 close.Wherein, the described first default aperture B1It is chosen as the minimum level aperture of the outdoor unit electric expansion valve 4.If obtaining
The outdoor environment temperature T is more than or equal to the preset temperature threshold Ta, namely illustrate that current outdoor environment temperature is higher,
After compressor 1 is out of service, refrigerant enters compressor 1 and will not be condensed to be mixed with lubricating oil, namely is not in compression
Machine 1 again starting up when flooded starts problem be therefore more than or equal in the outdoor environment temperature T described default
Temperature threshold TaWhen, it is directly out of service that processing module 20 controls compressor 1.
When the compressor 1 is with predeterminated frequency F operating, the outdoor unit electric expansion valve 4 is adjusted to the first default aperture
B1, in the case that the electronic expansion valve of indoor unit 5 is closed, refrigerant in indoor heat exchanger 6 and corresponding pipeline can not be through
Entered in outdoor heat exchanger 3 and corresponding pipeline by electronic expansion valve of indoor unit 5；And since outdoor unit electric expansion valve 4 is place
Refrigerant in open state, outdoor heat exchanger 3 and corresponding pipeline can be compressed by compressor 1 enters the room heat exchanger
6 and corresponding pipeline in changed so that the refrigerant in outdoor heat exchanger 3 and corresponding pipeline is gradually fully transferred to interior
In hot device 6 and corresponding pipeline.
Control module 30 is less than preset pressure threshold value for the pipeline air pressure between the compressor and gas-liquid separator
When, it is out of service to control the compressor.
In the present embodiment, pressure sensing is previously provided on the pipeline between the compressor 1 and gas-liquid separator 7
Device, the pressure sensor are used to detect the pipeline air pressure P between the compressor 1 and the gas-liquid separator 7.Due to described
Compressor 1 with predeterminated frequency F operating, refrigerant in outdoor heat exchanger 3 and corresponding pipeline by the compressor 1 compress into
Enter in indoor heat exchanger 6 and corresponding pipeline, therefore, the pipeline air pressure P between the compressor 1 and the gas-liquid separator 7
It can gradually become smaller.When the pipeline air pressure P between the compressor 1 and gas-liquid separator 7 is less than preset pressure threshold value P0When, namely
Illustrate to be not present in outdoor heat exchanger 3 and corresponding pipeline or there are seldom refrigerants, at this point, control module 30
It is out of service to control the compressor 1, and controls the outdoor unit electric expansion valve 4 and the closing of four-way valve 2, air conditioner stops work
Make.Due to being not present in outdoor heat exchanger 3 and corresponding pipeline or there are seldom refrigerants, stop in compressor 1
Just be substantially not present after only working, in outdoor heat exchanger 3 and corresponding pipeline refrigerant enter after compressor 1 is condensed with lubrication
Oil mixing, therefore, when user is again turned on air conditioner, when receiving power-on instruction, when 1 starting up of compressor, just not
A possibility that there are problems that flooded starts, namely reducing liquid hammer.
Scheme provided in this embodiment obtains module 10 and obtains outdoor environment temperature when air conditioner executes power-off operation,
When outdoor environment temperature is less than preset temperature threshold, processing module 20 is controlled compressor 1 and is operated with predeterminated frequency, outdoor electromechanical
Sub- expansion valve 4 is adjusted to the first default aperture, and electronic expansion valve of indoor unit 5 is closed, so that outdoor heat exchanger 3 and respective tube
Refrigerant migration in road is into indoor heat exchanger 6 and corresponding pipeline, until the pipe between compressor 1 and gas-liquid separator 7
When road air pressure is less than refrigerant is substantially not present in preset pressure threshold value namely outdoor heat exchanger 3 and corresponding pipeline, mould is controlled
It is out of service that block 30 controls compressor 1.After compressor 1 is shut down, since there is no the system in outdoor heat exchanger 3 and corresponding pipeline
Cryogen enters after compressor 1 is condensed to be mixed with lubricating oil, therefore, compressor 1 again starting up when, avoid band liquid open
Dynamic problem reduces harm caused by refrigerant washes away, to improve the reliability of air conditioner.
Further, as shown in figure 5, proposing the air condition of that present invention control device second embodiment based on first embodiment,
In the present embodiment, the processing module 20 includes:
Detection unit 21, for detecting the operation of air conditioner when the outdoor environment temperature is less than preset temperature threshold
Mode；
When processing unit 22 for the operational mode in air conditioner is heating mode, compressor is controlled with the first default frequency
Rate operating, outdoor unit electric expansion valve are adjusted to the first default aperture, and electronic expansion valve of indoor unit is closed.
Based on first embodiment, in the present embodiment, after obtaining module 10 and getting the outdoor environment temperature T, if obtaining
The outdoor environment temperature T taken is less than the preset temperature threshold Ta, then detection unit 21 detects the operational mode of air conditioner.
When air conditioner operates in heating mode, then processing unit 22 controls compressor 1 with the first predeterminated frequency F1Operating, it is outdoor electromechanical
Sub- expansion valve 4 is adjusted to the described first default aperture B1, the closing of electronic expansion valve of indoor unit 5.
In a heating mode, when the compressor 1 is with the first predeterminated frequency F1Operating, the outdoor unit electronic expansion
Valve 4 is adjusted to the first default aperture B1, in the case that the electronic expansion valve of indoor unit 5 is closed, the interior in higher-pressure region is changed
Refrigerant in hot device 6 and corresponding pipeline can not enter via electronic expansion valve of indoor unit 5 outdoor heat exchanger 3 of low-pressure area with
And in corresponding pipeline；And since outdoor unit electric expansion valve 4 is in the open state, the outdoor heat exchanger 3 and phase of low-pressure area
Answer the refrigerant in pipeline that can be compressed in the indoor heat exchanger 6 and the corresponding pipeline that enter higher-pressure region by compressor 1, thus
So that the refrigerant in the outdoor heat exchanger 3 and corresponding pipeline of low-pressure area is gradually fully transferred to the indoor heat exchanger of higher-pressure region
6 and corresponding pipeline in.Pipeline air pressure P between the compressor 1 and the gas-liquid separator 7 can gradually become smaller.When described
Pipeline air pressure P between compressor 1 and gas-liquid separator 7 is less than preset pressure threshold value P0When, namely illustrate the outdoor of low-pressure area
It has been not present in heat exchanger 3 and corresponding pipeline or there are seldom refrigerant, stopped at this point, controlling the compressor 1
It only runs, and controls the outdoor unit electric expansion valve 4 and the closing of four-way valve 2, air conditioner stops working.Due to the room of low-pressure area
It has been not present in external heat exchanger 3 and corresponding pipeline or there are seldom refrigerant, after compressor 1 stops working,
Just be substantially not present in the outdoor heat exchanger 3 and corresponding pipeline of low-pressure area refrigerant enter after compressor 1 is condensed with lubrication
Oil mixing, therefore, when user is again turned on air conditioner, when receiving power-on instruction, when 1 starting up of compressor, just not
A possibility that there are problems that flooded starts, namely reducing liquid hammer.
Scheme provided in this embodiment is less than preset temperature threshold when obtaining the outdoor environment temperature that module 10 obtains, if
Detection unit 21 detects air conditioner and operates in heating mode, then processing unit 22 controls compressor 1 with the first predeterminated frequency F1Fortune
Turn, outdoor unit electric expansion valve 4 is adjusted to the described first default aperture B1, electronic expansion valve of indoor unit 5 is closed, so that low pressure
Refrigerant migration in the outdoor heat exchanger 3 and corresponding pipeline in area into the indoor heat exchanger 6 and corresponding pipeline of higher-pressure region,
Until the pipeline air pressure between compressor 1 and gas-liquid separator 7 is less than the outdoor heat exchanger of preset pressure threshold value namely low-pressure area
3 and corresponding pipeline in when refrigerant is substantially not present, it is out of service that control module 30 controls compressor 1.Compressor 1 is shut down
Afterwards, since there is no the refrigerant in the outdoor heat exchanger of low-pressure area 3 and corresponding pipeline enter after compressor 1 is condensed with profit
Lubricating oil mixing, therefore, compressor 1 again starting up when, the problem of avoiding flooded starts, reduces refrigerant and washes away and makes
At harm, to improve the reliability of air conditioner.
Further, the air condition of that present invention control device 3rd embodiment is proposed based on second embodiment, in the present embodiment
In, the processing unit 22 is also used to:
When the operational mode of air conditioner is refrigeration mode, control compressor is operated with the second predeterminated frequency, indoor electromechanical
Sub- expansion valve is adjusted to the second default aperture, and outdoor unit electric expansion valve is closed.
Based on second embodiment, in the present embodiment, when detection unit 21, which detects air conditioner, operates in refrigeration mode, then locate
It manages unit 22 and controls compressor 1 with the second predeterminated frequency F2Operating, and control electronic expansion valve of indoor unit 5 to be adjusted to second default
Aperture B2, the closing of outdoor unit electric expansion valve 4.Wherein, the first predeterminated frequency F1With the second predeterminated frequency F2It can be according to reality
Situation carries out flexible setting, and this is not restricted.The second default aperture B2It is chosen as the electronic expansion valve of indoor unit 5
Minimum level aperture.
In cooling mode, when the compressor 1 is with the second predeterminated frequency F2Operating, the indoor unit electronic expansion
Valve 5 is adjusted to the described second default aperture B2, in the case that the outdoor unit electric expansion valve 4 is closed, the room in higher-pressure region
Refrigerant in external heat exchanger 3 and corresponding pipeline can not enter the indoor heat exchange of low-pressure area via outdoor unit electric expansion valve 4
In device 6 and corresponding pipeline；And due to electronic expansion valve of indoor unit 5 be it is in the open state, the indoor heat exchanger 6 of low-pressure area with
And the refrigerant in corresponding pipeline can be compressed in the outdoor heat exchanger 3 and the corresponding pipeline that enter higher-pressure region by compressor 1,
So that the outdoor that the refrigerant in the indoor heat exchanger 6 and corresponding pipeline of low-pressure area is gradually fully transferred to higher-pressure region is changed
In hot device 3 and corresponding pipeline.Pipeline air pressure P between the compressor 1 and the gas-liquid separator 7 can gradually become smaller, when
Pipeline air pressure P between the compressor 1 and gas-liquid separator 7 is less than the preset pressure threshold value P0When, namely illustrate low pressure
It has been not present in the indoor heat exchanger 6 and corresponding pipeline in area or there are seldom refrigerant, at this point, control module 30
It is out of service to control the compressor 1, and controls the electronic expansion valve of indoor unit 5 and the closing of four-way valve 2, air conditioner stops work
Make.Due to being not present in the indoor heat exchanger 6 and corresponding pipeline of low-pressure area or there are seldom refrigerants, pressing
After contracting machine 1 stops working, refrigerant is just substantially not present in the indoor heat exchanger 6 and corresponding pipeline of low-pressure area and enters compressor
1 be condensed after mixed with lubricating oil, therefore, when user is again turned on air conditioner, when receiving power-on instruction, the compressor 1
When starting up, a possibility that would not there are problems that flooded starts, namely reduce liquid hammer.
Scheme provided in this embodiment is less than preset temperature threshold when obtaining the outdoor environment temperature that module 10 obtains, if
Detection unit 21 detects air conditioner and operates in refrigeration mode, then processing unit 22 is controlled compressor 1 and operated with the second predeterminated frequency,
Electronic expansion valve of indoor unit 5 is adjusted to the second default aperture, and outdoor unit electric expansion valve 4 is closed, so that the interior of low-pressure area
Refrigerant migration in heat exchanger 6 and corresponding pipeline is into the outdoor heat exchanger 3 and corresponding pipeline of higher-pressure region, until compression
Pipeline air pressure between machine 1 and gas-liquid separator 7 is less than heat exchanger and phase in the outdoor of preset pressure threshold value namely low-pressure area
It answers when refrigerant being substantially not present in pipeline, it is out of service that control module 30 controls compressor 1.After compressor 1 is shut down, due to not
Enter after compressor 1 is condensed there are the refrigerant in the indoor heat exchanger 6 and corresponding pipeline of low-pressure area and mixed with lubricating oil,
Therefore, compressor 1 again starting up when, the problem of avoiding flooded starts, reduce harm caused by refrigerant washes away,
To further improve the reliability of air conditioner.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of air-conditioner control method, which is characterized in that the air-conditioner control method the following steps are included:
When air conditioner executes power-off operation, outdoor environment temperature is obtained；
When the outdoor environment temperature is less than preset temperature threshold, the operational mode of air conditioner is detected；
When the operational mode of air conditioner is heating mode, control compressor is operated with the first predeterminated frequency, and outdoor unit electronics is swollen
Swollen valve regulation to the first default aperture, electronic expansion valve of indoor unit is closed；
When the operational mode of air conditioner is refrigeration mode, control compressor is operated with the second predeterminated frequency, and indoor unit electronics is swollen
Swollen valve regulation to the second default aperture, outdoor unit electric expansion valve is closed；
When pipeline air pressure between the compressor and gas-liquid separator is less than preset pressure threshold value, controls the compressor and stop
Only run；Wherein, it is previously provided with pressure sensor on the pipeline between the compressor and the gas-liquid separator, for examining
Survey the pipeline air pressure between the compressor and the gas-liquid separator.
2. air-conditioner control method as described in claim 1, which is characterized in that the step of the acquisition outdoor environment temperature it
Afterwards, the air-conditioner control method further include:
When the outdoor environment temperature is more than or equal to preset temperature threshold, control compressor is out of service.
3. such as the described in any item air-conditioner control methods of claim 1-2, which is characterized in that when receiving shutdown command,
The step of executing the acquisition outdoor environment temperature.
4. a kind of air conditioner controlling device, which is characterized in that the air conditioner controlling device includes:
Module is obtained, for obtaining outdoor environment temperature when air conditioner executes power-off operation；
Processing module, for when the outdoor environment temperature is less than preset temperature threshold, control compressor to be transported with predeterminated frequency
Turn, outdoor unit electric expansion valve is adjusted to the first default aperture, and electronic expansion valve of indoor unit is closed；
Control module, when being less than preset pressure threshold value for the pipeline air pressure between the compressor and gas-liquid separator, control
It is out of service to make the compressor；Wherein, pressure is previously provided on the pipeline between the compressor and the gas-liquid separator
Force snesor, for detecting the pipeline air pressure between the compressor and the gas-liquid separator；
Wherein, the processing module includes:
Detection unit, for detecting the operational mode of air conditioner when the outdoor environment temperature is less than preset temperature threshold；
Processing unit, for the operational mode in air conditioner be heating mode when, control compressor operated with the first predeterminated frequency,
Outdoor unit electric expansion valve is adjusted to the first default aperture, and electronic expansion valve of indoor unit is closed；And the operation mould in air conditioner
Formula be refrigeration mode when, control compressor operate with the second predeterminated frequency, electronic expansion valve of indoor unit be adjusted to second preset open
Degree, outdoor unit electric expansion valve are closed.
5. air conditioner controlling device as claimed in claim 4, which is characterized in that the processing module is also used to:
When the outdoor environment temperature is more than or equal to preset temperature threshold, control compressor is out of service.
6. such as the described in any item air conditioner controlling devices of claim 4-5, which is characterized in that the acquisition module is used for:
When receiving shutdown command, outdoor environment temperature is obtained.
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| CN106288237B (en) * | 2016-10-10 | 2019-04-23 | 芜湖美智空调设备有限公司 | A kind of halt control method of air conditioner, control device and air conditioner |
| CN107152767B (en) * | 2017-06-12 | 2020-12-15 | 广东美的暖通设备有限公司 | Control method and device of air conditioner and computer readable storage medium |
| CN107906679A (en) * | 2017-10-31 | 2018-04-13 | 广东美的暖通设备有限公司 | The halt control method of air conditioner, shutdown control system, air conditioner |
| CN108007027A (en) * | 2017-11-07 | 2018-05-08 | 珠海格力电器股份有限公司 | Shutdown control method and device for refrigeration system |
| CN110542237B (en) * | 2019-09-12 | 2021-03-30 | 广东美的制冷设备有限公司 | Air conditioner, operation control method and device thereof and computer readable storage medium |
| CN115701514A (en) * | 2021-08-02 | 2023-02-10 | 美的集团股份有限公司 | Air conditioner control method, air conditioner, storage medium and device |
| CN113983643B (en) * | 2021-11-05 | 2023-08-01 | 海信（广东）空调有限公司 | Control method of air conditioner |
| CN114440392B (en) * | 2022-02-25 | 2023-10-27 | 海信空调有限公司 | Air conditioner and air conditioner control method |
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