CN107514683A - Air conditioner and its indoor set automatically cleaning control method - Google Patents
Air conditioner and its indoor set automatically cleaning control method Download PDFInfo
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- CN107514683A CN107514683A CN201710639786.5A CN201710639786A CN107514683A CN 107514683 A CN107514683 A CN 107514683A CN 201710639786 A CN201710639786 A CN 201710639786A CN 107514683 A CN107514683 A CN 107514683A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 139
- 238000000034 method Methods 0.000 title claims abstract description 72
- 239000003507 refrigerant Substances 0.000 claims abstract description 83
- 230000006835 compression Effects 0.000 claims abstract description 31
- 238000007906 compression Methods 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 15
- 231100000719 pollutant Toxicity 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims description 39
- 238000005057 refrigeration Methods 0.000 claims description 25
- 230000005611 electricity Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 2
- 230000008014 freezing Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 description 12
- 239000000428 dust Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002085 persistent effect Effects 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by 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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a kind of air conditioner and its indoor set automatically cleaning control method, the indoor set heat-exchanging component of wherein air conditioner includes：The first indoor heat exchanger and the second indoor heat exchanger of concatenation, wherein the second indoor heat exchanger is connected to compressor by refrigerant flow direction switching device, are provided with electric expansion valve, and control method includes between the first indoor heat exchanger and the second indoor heat exchanger：Receive the trigger signal that air conditioner opens self-cleaning function；Refrigerant flow direction switching device is adjusted to the state that compression refrigerant is provided to compressor to indoor set heat-exchanging component；By the aperture for adjusting electric expansion valve, heated again so that the first indoor heat exchanger first freezes, to make its continuous surface frosting in cooling stages, and defrost is carried out in the heating stage, the water formed using defrost takes away the pollutant of attachment, realizes the automatically cleaning of the first indoor heat exchanger.The solution of the present invention, the big ups and downs of temperature are avoided, more preferably usage experience is brought to user.
Description
Technical field
The present invention relates to domestic air conditioning, more particularly to air conditioner and its indoor set automatically cleaning control method.
Background technology
After air conditioner placement for a long time or use, indoor set can have substantial amounts of dust and dirt.These dust and dirt are attached to indoor set
Heat exchanger on, on the one hand can reduce the heat exchange property of heat exchanger, cause household air-conditioner to decline, cause energy consumption to improve；It is another
Aspect, dust and dirt adhere to easy breed bacteria, form mildew, and these bacteriums and mildew can produce peculiar smell in unit, such as not in time
Cleaning, serious threat the health of air conditioner user.
The scheme that traditional air conditioner is taken generally periodically is cleaned, and brings serious inconvenience to user's use, therefore be
Solves the above mentioned problem adhered to dust and dirt on the heat exchanger of air conditioner and brought, prior art occurs being used as steaming using heat exchanger
Hair device using when produce condensed water, taken away by condensed water heat exchanger surface dust and dirt technological means, realize in air conditioner chamber
The automatically cleaning of machine heat exchanger.
But the above-mentioned scheme that air conditioner room unit heat exchanger cleaning is carried out using condensed water, in actual use can
Refrigeration normal to air conditioner or heating impact, such as in heating operations, cause fluctuations in indoor temperature, are brought to user
Discomfort, it have impact on user experience.
The content of the invention
One object of the present invention offer is a kind of at least to solve the sky with self-cleaning function of above-mentioned partial technical problems
Adjust device and its control method.
The present invention one causes larger fluctuation to temperature further objective is that to reduce automatically cleaning in heating operations.
According to an aspect of the invention, there is provided a kind of indoor set automatically cleaning control method of air conditioner, wherein air-conditioning
The refrigeration system of device include be sequentially connected in series by refrigerant line indoor set heat-exchanging component, refrigerant flow direction switching device, compression
Machine, outdoor unit heat-exchanging component and throttling arrangement, wherein indoor set heat-exchanging component include：Concatenation the first indoor heat exchanger with
And second indoor heat exchanger, wherein the second indoor heat exchanger is connected to compressor, the first Room by refrigerant flow direction switching device
Electric expansion valve is provided between interior heat exchanger and the second indoor heat exchanger, and control method includes：Air conditioner is received to open
The trigger signal of self-cleaning function；Refrigerant flow direction switching device is adjusted to compressor to indoor set heat-exchanging component compression is provided
The state of refrigerant；By the aperture for adjusting electric expansion valve so that the first indoor heat exchanger first freezes to be heated again, to freeze
Stage makes its continuous surface frosting, and carries out defrost in the heating stage, and the water formed using defrost takes away the pollutant of attachment, real
The automatically cleaning of existing first indoor heat exchanger.
Alternatively, by adjusting the aperture of electric expansion valve so that the first indoor heat exchanger first freezes the step of heating again
Including：Detect the temperature of the first indoor heat exchanger；According to the aperture of the temperature adjustment electric expansion valve of the first indoor heat exchanger, make
The first design temperature is down at a temperature of obtaining the first indoor heat exchanger；Keep being down to first at a temperature of the first indoor heat exchanger and set
The aperture of electric expansion valve when constant temperature is spent, make the first indoor heat exchanger continuous surface frosting, until meeting the first defrost of setting
Condition；After the first defrost condition of satisfaction, the aperture of electric expansion valve is opened to maximum, make the first indoor heat exchanger release heat
Amount, to carry out defrost.
Alternatively, the first defrost condition includes：The second design temperature or electricity are down at a temperature of first indoor heat exchanger
The time that the aperture of sub- expansion valve is kept is less than the first design temperature more than the first setting time, the second design temperature.
Alternatively, after the first indoor heat exchanger completes automatically cleaning, in addition to：By refrigerant flow direction switching device adjust to
Compressor provides the state of compression refrigerant to outdoor unit heat-exchanging component；By the aperture for adjusting electric expansion valve so that second
Indoor heat exchanger freezes, from its continuous surface frosting；After default second defrost condition is met, refrigerant flow direction is switched
Device adjusts the state that compression refrigerant is provided to compressor to indoor set heat-exchanging component, and opens the aperture of electric expansion valve
To maximum, the second indoor heat exchanger is set to discharge heat, the water formed using defrost takes away the pollutant of attachment, realizes in second Room
The automatically cleaning of heat exchanger.
Alternatively, by adjusting the aperture of electric expansion valve so that the step of the second indoor heat exchanger freezes includes：Detection
The temperature of second indoor heat exchanger；According to the aperture of the temperature adjustment electric expansion valve of the second indoor heat exchanger so that second Room
The 3rd design temperature is down at a temperature of interior heat exchanger；When keeping being down to three design temperatures at a temperature of the second indoor heat exchanger
The aperture of electric expansion valve, heat exchanger surface in second Room is set to continue frosting, until meeting the second defrost condition.
Alternatively, the second defrost condition includes：The 4th design temperature or electricity are down at a temperature of second indoor heat exchanger
The time that the aperture of sub- expansion valve is kept is more than the second setting time；4th design temperature is less than the 3rd design temperature.
Alternatively, also include after the trigger signal of air conditioner unlatching self-cleaning function is received：Measure in air conditioner chamber
The operating ambient temperature of machine；When operating ambient temperature is less than five design temperatures, electric expansion valve is placed in slave mode, and
The first indoor heat exchanger is performed first to freeze the process heated again；When operating ambient temperature is higher than five design temperatures, electricity is kept
The initial opening of sub- expansion valve, and perform the overall automatically cleaning process of indoor set heat-exchanging component.
According to another aspect of the present invention, a kind of air conditioner is additionally provided, it includes refrigeration system and automatically cleaning control
Device, wherein refrigeration system include：The indoor set heat-exchanging component that is sequentially connected in series by refrigerant line, refrigerant flow direction switching device,
Compressor, outdoor unit heat-exchanging component and throttling arrangement, wherein indoor set heat-exchanging component include：First indoor heat exchange of concatenation
Device and the second indoor heat exchanger, wherein the second indoor heat exchanger is connected to compressor by refrigerant flow direction switching device, the
Electric expansion valve is provided between one indoor heat exchanger and the second indoor heat exchanger；Automatically cleaning controller, is electrically connected with refrigeration system
Connect, and be configured to：Receive the trigger signal that air conditioner opens self-cleaning function；Refrigerant flow direction switching device is adjusted to compression
Machine provides the state of compression refrigerant to indoor set heat-exchanging component；By the aperture for adjusting electric expansion valve so that first is indoor
Heat exchanger first freezes to be heated again, to make its continuous surface frosting in cooling stages, and is carried out defrost in the heating stage, is utilized defrost
The water of formation takes away the pollutant of attachment, realizes the automatically cleaning of the first indoor heat exchanger.
Alternatively, automatically cleaning controller is configured to：Detect the temperature of the first indoor heat exchanger；According to the first indoor heat exchange
The aperture of the temperature adjustment electric expansion valve of device so that the first design temperature is down at a temperature of the first indoor heat exchanger；Keep
The aperture of electric expansion valve during the first design temperature is down at a temperature of first indoor heat exchanger, makes the first indoor heat exchanger
Continuous surface frosting, until meeting the first defrost condition of setting；After the first defrost condition of satisfaction, make opening for electric expansion valve
Degree is opened to maximum, the first indoor heat exchanger is discharged heat, to carry out defrost, the first defrost condition includes：First interior is changed
Time that the aperture of the second design temperature or electric expansion valve keeps is down at a temperature of hot device more than the first setting time, the
Two design temperatures are less than the first design temperature.
Alternatively, automatically cleaning controller is configured to：After the first indoor heat exchanger completes automatically cleaning, by refrigerant flow direction
Switching device adjusts the state that compression refrigerant is provided to compressor to outdoor unit heat-exchanging component；Detect the second indoor heat exchanger
Temperature；According to the aperture of the temperature adjustment electric expansion valve of the second indoor heat exchanger so that at a temperature of the second indoor heat exchanger
It is down to the 3rd design temperature；Electric expansion valve opens when keeping being down to three design temperatures at a temperature of the second indoor heat exchanger
Degree, heat exchanger surface in second Room is set to continue frosting, until meeting default second defrost condition；In the second defrost condition that meets
Afterwards, refrigerant flow direction switching device is adjusted to the state that compression refrigerant is provided to compressor to indoor set heat-exchanging component, and made
The aperture of electric expansion valve is opened to maximum, the second indoor heat exchanger is discharged heat, and the water formed using defrost takes away attachment
Pollutant, realize the automatically cleaning of the second indoor heat exchanger, the second defrost condition includes：The Wen Duxiajiang of second indoor heat exchanger
The time kept to the aperture of the 4th design temperature or electric expansion valve is more than the second setting time；4th design temperature is less than
3rd design temperature.
Alternatively, automatically cleaning controller is configured to：After the trigger signal of air conditioner unlatching self-cleaning function is received,
Measure the operating ambient temperature of air conditioner room unit；When operating ambient temperature is less than five design temperatures, by electric expansion valve
It is placed in slave mode, and performs the first indoor heat exchanger and first freeze the process heated again；Set in operating ambient temperature higher than the 5th
When constant temperature is spent, the initial opening of electric expansion valve is kept, and performs the overall automatically cleaning process of indoor set heat-exchanging component.
The air conditioner and its indoor set automatically cleaning control method, the air conditioner that is particularly suitable for use in of the present invention runs on heating state
Under, the structure of indoor set heat-exchanging component is improved, there is provided changed in the first indoor heat exchanger and second Room of concatenation
Hot device, and electric expansion valve is added between the first indoor heat exchanger and the second indoor heat exchanger, by adjusting refrigerant
Flow direction and electric expansion valve aperture, carry out the first indoor heat exchanger respectively and the second indoor heat exchanger perform respectively from
Cleaning process, automatically cleaning process is integrally carried out compared to indoor set heat-exchanging component of the prior art, is reduced to working environment
The influence of temperature, the big ups and downs of temperature are prevented, more preferably usage experience is brought to user.
Further, air conditioner of the invention and its indoor set automatically cleaning control method, to the first indoor heat exchanger and
The respective automatically cleaning flow of second indoor heat exchanger is optimized, and the time of consuming is less, and automatically cleaning effect is more preferable.
Further, air conditioner of the invention and its indoor set automatically cleaning control method, can be according to the work of indoor set
Self-cleaning scheme is determined as environment, selects indoor set heat-exchanging component entirety automatically cleaning or the first indoor heat exchanger and second
Indoor heat exchanger carries out automatically cleaning respectively, in the case of ensureing that user is comfortable, saves self-cleaning process and uses electric energy consumption.
According to the accompanying drawings will be brighter to the detailed description of the specific embodiment of the invention, those skilled in the art
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
Some specific embodiments of the present invention are described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these
What accompanying drawing was not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is the functional block diagram of air conditioner according to an embodiment of the invention；
Fig. 2 is the schematic diagram of the refrigeration system of air conditioner according to an embodiment of the invention；
Fig. 3 is the schematic diagram of the indoor set automatically cleaning control method of air conditioner according to an embodiment of the invention；
Fig. 4 is to realize that first is indoor in the indoor set automatically cleaning control method of air conditioner according to an embodiment of the invention
The self-cleaning flow chart of heat exchanger；
Fig. 5 is to be realized in the indoor set automatically cleaning control method of air conditioner according to an embodiment of the invention in second Room
The self-cleaning flow chart of heat exchanger；And
Fig. 6 is the specific implementation according to the indoor set automatically cleaning control method of the air conditioner of a specific embodiment of the invention
Flow chart.
Embodiment
Fig. 1 is the functional block diagram of air conditioner 10 according to an embodiment of the invention.Fig. 2 is according to the present invention one
The schematic diagram of the refrigeration system of the air conditioner 10 of individual embodiment.
The air conditioner 10 can include air conditioner room unit 100 and air-conditioner outdoor unit 200, air conditioner chamber in general manner
Interior machine 100 and air-conditioner outdoor unit 200 complete refrigeration and the heating circulation of air-conditioning, so as to real by effectively coordinating operating
Now occupy the cold and hot regulation of indoor temperature.The refrigeration system of air conditioner 10 can realize that compression is freezed using kind of refrigeration cycle is compressed
Recycle the biography that refrigerant realizes heat in the compression phase transformation circulation of compressor 250, condenser, evaporator, throttling arrangement 240
Pass.Refrigeration system can also set refrigerant flow direction switching device 260, change the flow direction of refrigerant, make room indoor set heat exchange group
Part 110 realizes that refrigeration or heat-production functions, refrigerant flow direction switching device 260 are typically adopted alternately as evaporator or condenser
Realized with four-way valve.
Compression kind of refrigeration cycle operation principle be：Compressor 250 is the power of kind of refrigeration cycle, it by motor run without
Rotate with stopping, it maintains outside low-temp low-pressure except extracting evaporator inner vapor out in time, also improve refrigerant by compression and steam
The pressure and temperature of gas, create the heat of the refrigerant vapour condition that outwardly surrounding medium shifts.I.e. by low-temp low-pressure system
Refrigerant vapor compression is to high-temperature high-pressure state.
Condenser is a heat-exchange apparatus, and effect is using environment cooling refrigerant, by the high temperature from compressor 250
The heat of high-pressure refrigeration steam is taken away, and makes the cooling of high-temperature high-pressure refrigerant steam, is condensed into the refrigerant liquid of high normal pressure and temperature.
The refrigerant liquid of high normal pressure and temperature is sent directly into evaporator, according to saturation pressure and saturation temperature --- and it is corresponding former
Reason, the pressure of refrigerant liquid is reduced, so as to reduce the temperature of refrigerant liquid.The refrigerant liquid of high normal pressure and temperature is passed through into section
Device 240 is flowed, obtains low-temperature low-pressure refrigerant, is re-fed into heat absorption evaporation in evaporator.It can typically be used in air conditioner 10
Capillary is as throttling arrangement 240.
Evaporator is also a heat-exchange apparatus.Low-temperature low-pressure refrigerant liquid evaporation (boiling) change in it after throttling
For steam, ambient heat is absorbed, declines environment temperature.
Refrigerant flow direction switching device 260 is used for the flow direction for switching refrigerant in compression kind of refrigeration cycle, such as in air conditioner
In 10 heating operations, compressor 250 provides compression refrigerant to indoor set heat-exchanging component 110, and indoor set heat-exchanging component 110 is made
For condenser, refrigerant is sent into outdoor unit heat exchange group after the condensation of indoor set heat-exchanging component 110, by throttling arrangement 240
Part 210, outdoor unit heat-exchanging component 210 absorb outside heat, refrigerant then are re-fed into compressor 250.In air conditioner 10
In process of refrigerastion, compressor 250 to outdoor unit heat-exchanging component 210 provide compression refrigerant, using outdoor unit heat-exchanging component 210 as
Condenser, refrigerant are sent into indoor set heat-exchanging component after the condensation of outdoor unit heat-exchanging component 210, by throttling arrangement 240
110, indoor set heat-exchanging component 110 absorbs outside heat, cools down the air of surrounding, has the function that to air cooling-down, dehumidifies, so
Refrigerant is re-fed into compressor 250 afterwards.
Indoor set blower fan 120 and outdoor unit blower fan 220 in other refrigeration system produce and indoor set heat-exchanging component respectively
110 and outdoor unit heat-exchanging component 210 carry out heat exchange air-flow.
Because air conditioner 10 is in use placement process, machine heat-exchanging component 110 and outdoor unit heat-exchanging component 210 indoors are understood
On save bit by bit dust, air conditioner 10 turns into institute's potential pollution sources in the environment, such as in some tests, discovery is not cleaned for a long time
Indoor set heat-exchanging component 110 pollution level it is very surprising, this can bring great health risk to user.Asked based on above-mentioned
Topic, the automatically cleaning technology occurred in the prior art, dirt is peeled off evaporator by frosting and disintegrate dust dirt, Ran Houhua rapidly
The water of frost rinses indoor set heat-exchanging component 110, to reach the purpose of cleaning, it is necessary to first in this actual implementation process of technology
Indoor set heat-exchanging component 110 is set to collect the moisture of surrounding environment, this is necessarily required to so that indoor set heat-exchanging component 110 works in steaming
Send out device state.Necessarily cause air conditioner room unit 100 to export cold wind if carrying out automatically cleaning in heating operations, reduce working environment
Temperature, bring uncomfortable sensation to user.
The air conditioner 10 of the present embodiment is in view of the above-mentioned problems, take following structure to improve：Indoor set heat-exchanging component 110 wraps
Include：The first indoor heat exchanger 111 and the second indoor heat exchanger 112 of concatenation, wherein the second indoor heat exchanger 112 passes through refrigeration
Agent flows to switching device 260 and is connected to compressor 250, is set between the first indoor heat exchanger 111 and the second indoor heat exchanger 112
There is electric expansion valve 130.First indoor heat exchanger 111 is communicated to outdoor unit heat-exchanging component 210 by throttling arrangement 240.Electronics
Remain on, will not be impacted to freezing or heating in the course of normal operation of expansion valve 130, carrying out automatically cleaning mistake
Cheng Zhong, the regulation that the aperture of electric expansion valve 130 can be controlled.
The air conditioner 10 of the present embodiment is also provided with automatically cleaning controller 150, and the automatically cleaning controller 150 can be by air-conditioning
10 original control panel of device is by configuring automatically cleaning control program or being realized by preset automatically cleaning control logic, due to certainly
The hardware construction of controller 150 itself is cleaned known by those skilled in the art, is not repeated herein.
Automatically cleaning controller 150 carries out the process that automatically cleaning controls：Receive air conditioner 10 and open touching for self-cleaning function
Signal (such as the automatically cleaning control instruction that user is issued by remote control or the Man Machine Interface of air conditioner 10 is received,
Or air conditioner 10 determines to need to carry out automatically cleaning and caused triggering command according to itself working condition)；It is above-mentioned receiving
Refrigerant flow direction switching device 260 is adjusted to compressor 250 to indoor set heat-exchanging component 110 after trigger signal compression system is provided
The state (namely switching to the heating state of air conditioner 10, if being in heating state, keep the state) of cryogen；Pass through tune
Save the aperture of electric expansion valve 130 so that the first indoor heat exchanger 111 first freezes to be heated again, to make its surface in cooling stages
Continue frosting, and defrost is carried out in the heating stage, the water formed using defrost takes away the pollutant of attachment, realizes that the first interior is changed
The automatically cleaning of hot device 111.
Automatically cleaning controller 150 is by adjusting the aperture of electric expansion valve 130 so that the first indoor heat exchanger 111 is first made
The cold process that heats again is specially：Detect temperature (such as the coil pipe of the first indoor heat exchanger 111 of the first indoor heat exchanger 111
Temperature)；According to the aperture of the temperature adjustment electric expansion valve 130 of the first indoor heat exchanger 111 so that the first indoor heat exchanger
The first design temperature is down at a temperature of 111；Electricity when keeping being down to the first design temperature at a temperature of the first indoor heat exchanger 111
The aperture of sub- expansion valve 130, make the continuous surface frosting of the first indoor heat exchanger 111, until meeting the first defrost condition of setting；
After the first defrost condition of satisfaction, the aperture of electric expansion valve 130 is opened to maximum, discharge the first indoor heat exchanger 111
Heat, to carry out defrost.Above-mentioned first defrost condition includes：The second setting temperature is down at a temperature of first indoor heat exchanger 111
The time that the aperture of degree or electric expansion valve 130 is kept, the second design temperature was less than the first setting more than the first setting time
Temperature.
Electric expansion valve 130 is after aperture is adjusted, it is possible to achieve throttling action so that high-temperature high-pressure refrigerant steam is existed
Cooled down in second indoor heat exchanger 112, then by the throttling of electric expansion valve 130, obtain low-temperature low-pressure refrigerant, equivalent to
Now First Heat Exchanger is freezed with outdoor unit heat-exchanging component 210 collectively as evaporator so that First Heat Exchanger is to surrounding
Moisture in air is condensed, and starts frosting in its own face.
After being down to the first design temperature at a temperature of first indoor heat exchanger 111, electric expansion valve 130 keeps currently opening
Degree, makes the continuous surface frosting of the first indoor heat exchanger 111, until meeting first defrost condition (the first indoor heat exchanger of setting
When the time of the aperture holding of the second design temperature or electric expansion valve 130 is down at a temperature of 111 more than the first setting
Between).After above-mentioned first defrost condition is met, it is believed that First Heat Exchanger frosting is completed.And in First Heat Exchanger
In Frost formation process, compressor 250 can maintain its operating frequency inconvenient, and close indoor set blower fan 120 and outdoor unit blower fan
220。
Automatically cleaning controller 150 makes the aperture of electric expansion valve 130 open to most after it is determined that reaching the first defrost condition
(opening speed needs as early as possible) greatly, is changed to the first indoor heat exchanger 111 and is run with condenser state, so as to discharge heat, with
Defrost is carried out, the water formed using defrost takes away the pollutant of attachment, realizes the automatically cleaning of the first indoor heat exchanger 111.
The second indoor heat exchanger 112 can keep heating state in above process, efficiently reduce the first interior and change
Influence of the hot device 111 to surrounding environment, avoids and exports the discomfort that cold wind is brought to user.
Automatically cleaning controller 150 can also continue to execution the after the automatically cleaning process of the first indoor heat exchanger 111 is completed
The automatically cleaning process of two indoor heat exchangers 112, is specifically included：Refrigerant flow direction switching device is adjusted to compressor 250 to room
Outer machine heat-exchanging component 210 provides the state of compression refrigerant (equivalent to the refrigerating state of air conditioner 10)；Changed in detection second Room
The temperature of hot device 112；According to the aperture of the temperature adjustment electric expansion valve 130 of the second indoor heat exchanger 112 so that in second Room
The 3rd design temperature is down at a temperature of heat exchanger 112；Keep being down to the 3rd setting temperature at a temperature of the second indoor heat exchanger 112
The aperture of electric expansion valve 130 when spending, make the continuous surface frosting of the second indoor heat exchanger 112, until meeting that default second changes
Ice-lolly part；After the second defrost condition of satisfaction, refrigerant flow direction switching device is adjusted to compressor 250 to indoor set heat exchange group
Part 110 provides the state of compression refrigerant, and the aperture of electric expansion valve 130 is opened to maximum, makes the second indoor heat exchanger
112 release heats, the water formed using defrost take away the pollutant of attachment, realize the automatically cleaning of the second indoor heat exchanger 112, the
Two defrost conditions include：Opening for the 4th design temperature or electric expansion valve 130 is down at a temperature of second indoor heat exchanger 112
The time kept is spent more than the second setting time；4th design temperature is less than the 3rd design temperature.
Therefore during the automatically cleaning of above-mentioned second indoor heat exchanger 112, its process and the first indoor heat exchanger 111 from
Cleaning process is similar, namely realizes throttling action using electric expansion valve 130, keeps the first indoor heat exchanger in the state
111 persistent fevers, reduce influence of second indoor heat exchanger 112 to surrounding environment.
During above-mentioned automatically cleaning, the first design temperature, the second design temperature, the 3rd design temperature, the 4th setting temperature
Degree can carry out test according to the actual specification and running environment of air conditioner 10 and draw, such as the first design temperature and the 3rd
Design temperature could be arranged to -5 DEG C, and the second design temperature and the 4th design temperature could be arranged to -15 DEG C (above-mentioned numerical value are in room
In the case that interior outdoor is 20 DEG C, the result that test is drawn is carried out to a certain specific air conditioner, in the specific implementation can root
It is adjusted within the specific limits according to situation).First setting time and the second setting time also can accordingly be set, and be avoided
Under special operation condition, the first indoor heat exchanger 111 or the second indoor heat exchanger 112 are unable to reach the second design temperature and the 4th and set
Constant temperature degree.
In addition, automatically cleaning controller 150 can also be according to the first indoor heat exchanger 111 or the second indoor heat exchanger 112
Temperature determine the termination condition of automatically cleaning process, such as the first indoor heat exchanger 111 or the defrost of the second indoor heat exchanger 112
Stage duration exceedes defrost time of setting either the first indoor heat exchanger 111 or the second indoor heat exchanger 112
When temperature reaches defrost temperature (such as 50 DEG C) of setting, determine that automatically cleaning is completed.After automatically cleaning is completed, indoor set can be made
Blower fan 120 is blown, and indoor set heat-exchanging component 110 is dried.
Above-mentioned self-cleaning process, it is necessary to repeatedly switch refrigerant stream and start and stop compressor 250, volume may be brought
Outer energy consumption, therefore automatically cleaning controller 150 is after receiving air conditioner 10 and opening the trigger signal of self-cleaning function, can be first
First measure the operating ambient temperature of air conditioner room unit 100；It is when operating ambient temperature is less than five design temperatures, electronics is swollen
Swollen valve 130 is placed in slave mode, and performs the first indoor heat exchanger 111 and first freeze the process heated again；In operating ambient temperature
During higher than five design temperatures, the initial opening of electric expansion valve 130 is kept, and performs indoor set heat-exchanging component 110
Overall automatically cleaning process.Such as when the 5th design temperature is arranged into 26 DEG C, it is believed that in the environment higher than 26 DEG C, to indoor set
Heat-exchanging component 110 carries out overall automatically cleaning and is insufficient to allow user to feel uncomfortable to ambient temperature effect, therefore can be to interior
Machine heat-exchanging component 110 carries out overall automatically cleaning.If environment temperature is less than 26 DEG C, above-mentioned first indoor heat exchanger can be performed
111 and second indoor heat exchanger 112 distinguish self-cleaning process.It should be noted that above-mentioned 5th design temperature is set as 26 DEG C
By way of example only, when the present embodiment is embodied, can the real experiences of user as needed the 5th design temperature is entered
Row setting.
The embodiment of the present invention additionally provides a kind of automatically cleaning control method of indoor set 100 of air conditioner 10, the air conditioner 10
The automatically cleaning control method of indoor set 100 be used to carry out automatically cleaning control to the air conditioner 10 in above-described embodiment, and can be with
Performed by the automatically cleaning controller 150 in above-described embodiment, Fig. 3 is the room of air conditioner 10 according to an embodiment of the invention
The schematic diagram of the interior automatically cleaning control method of machine 100, the automatically cleaning control method of indoor set 100 of the air conditioner 10 in general manner can be with
Including：
Step S302, receive air conditioner 10 and open the trigger signal of self-cleaning function, such as receive user and pass through remote control
Device automatically cleaning control instruction or air conditioner 10 that either the Man Machine Interface of air conditioner 10 issues is true according to itself working condition
Surely need to carry out automatically cleaning and caused triggering command.
Step S304, refrigerant flow direction switching device 260 is adjusted to compressor 250 to indoor set heat-exchanging component 110 and carried
For the state of compression refrigerant, namely the heating state of air conditioner 10 is switched to, if being in heating state, keep the shape
State；
Step S306, by the aperture for adjusting electric expansion valve 130 so that the first indoor heat exchanger 111 first freezes to be made again
Heat, to make its continuous surface frosting in cooling stages, and defrost is carried out in the heating stage, the water formed using defrost takes away attachment
Pollutant, realize the automatically cleaning of the first indoor heat exchanger 111.
Fig. 4 is that is realized in the automatically cleaning control method of indoor set 100 of air conditioner 10 according to an embodiment of the invention
The self-cleaning flow chart of one indoor heat exchanger 111, the figure shows step S306 workflow, is specifically included：
Step S402, the temperature of the first indoor heat exchanger 111 is detected, such as can be by obtaining the first indoor heat exchanger
111 coil temperature obtains.
Step S404, according to the aperture of the temperature adjustment electric expansion valve 130 of the first indoor heat exchanger 111 so that first
The first design temperature is down at a temperature of indoor heat exchanger 111；
Step S406, electric expansion valve 130 when keeping being down to the first design temperature at a temperature of the first indoor heat exchanger 111
Aperture, make the continuous surface frosting of the first indoor heat exchanger 111, until meet setting the first defrost condition, the first defrost bar
Part includes：The aperture holding of the second design temperature or electric expansion valve 130 is down at a temperature of first indoor heat exchanger 111
Time is less than the first design temperature more than the first setting time, the second design temperature.
Step S408, after the first defrost condition of satisfaction, the aperture of electric expansion valve 130 is opened to maximum, make first
Indoor heat exchanger 111 discharges heat, to carry out defrost.
After the first indoor heat exchanger 111 completes automatically cleaning, the automatically cleaning control of indoor set 100 of the air conditioner 10 of the present embodiment
Method processed further can also carry out automatically cleaning to the second indoor heat exchanger 112.Detailed process is：Refrigerant flow direction is switched and filled
Put 260 and adjust to compressor 250 to outdoor unit heat-exchanging component 210 and provide the state of compression refrigerant (equivalent to switching to air-conditioning
The refrigerating state of device 10)；By the aperture for adjusting electric expansion valve 130 so that the second indoor heat exchanger 112 freezes, from it
Continuous surface frosting；After default second defrost condition is met, by refrigerant flow direction switching device adjust to compressor 250 to
Indoor set heat-exchanging component 110 provides the state of compression refrigerant, and the aperture of electric expansion valve 130 is opened to maximum, makes the
Two indoor heat exchangers 112 discharge heat, and the water formed using defrost takes away the pollutant of attachment, realizes the second indoor heat exchanger
112 automatically cleaning, above-mentioned second defrost condition include：Be down at a temperature of second indoor heat exchanger 112 the 4th design temperature or
The time that the aperture of person's electric expansion valve 130 is kept is more than the second setting time；4th design temperature is less than the 3rd design temperature.
Fig. 5 is that is realized in the automatically cleaning control method of indoor set 100 of air conditioner 10 according to an embodiment of the invention
The self-cleaning flow chart of two indoor heat exchangers 112, the automatically cleaning process of the second indoor heat exchanger 112 include：
Step S502, detect the temperature of the second indoor heat exchanger 112；
Step S504, according to the aperture of the temperature adjustment electric expansion valve 130 of the second indoor heat exchanger 112 so that second
The 3rd design temperature is down at a temperature of indoor heat exchanger 112；
Step S506, electric expansion valve 130 when keeping being down to three design temperatures at a temperature of the second indoor heat exchanger 112
Aperture, make the continuous surface frosting of the second indoor heat exchanger 112, until meet the second defrost condition；
Step S508, after the second defrost condition of satisfaction, refrigerant flow direction switching device 260 is adjusted to compressor 250
The state of compression refrigerant is provided to indoor set heat-exchanging component 110；
Step S508, the aperture of electric expansion valve 130 is opened to maximum, the second indoor heat exchanger 112 is discharged heat,
The water formed using defrost takes away the pollutant of attachment, realizes the automatically cleaning of the second indoor heat exchanger 112.
Therefore during the automatically cleaning of above-mentioned second indoor heat exchanger 112, its process and the first indoor heat exchanger 111 from
Cleaning process is similar, namely realizes throttling action using electric expansion valve 130, keeps the first indoor heat exchanger in the state
111 persistent fevers, reduce influence of second indoor heat exchanger 112 to surrounding environment.
In order to avoid when unnecessary, frequent switching refrigerant flow direction switching device 260 and start and stop compressor 250,
After receiving the trigger signal that air conditioner 10 opens self-cleaning function, the building ring of air conditioner room unit 100 can be measured first
Border temperature；When operating ambient temperature is less than five design temperatures, electric expansion valve 130 is placed in slave mode, and performs the
One indoor heat exchanger 111 first freezes the process heated again；When operating ambient temperature is higher than five design temperatures, keep electronics swollen
The initial opening of swollen valve 130, and perform the overall automatically cleaning process of indoor set heat-exchanging component 110.Such as the 5th is set
When temperature setting is 26 DEG C, it is believed that in the environment higher than 26 DEG C, overall automatically cleaning is carried out to indoor set heat-exchanging component 110 to ring
Border temperature is under-effected so that user feels uncomfortable, therefore can carry out overall automatically cleaning to indoor set heat-exchanging component 110.Such as
Fruit environment temperature is less than 26 DEG C, can perform the above-mentioned indoor heat exchanger 112 of first indoor heat exchanger 111 and second difference automatically cleaning
Process.It should be noted that above-mentioned 5th design temperature is set as 26 DEG C by way of example only, in specific implementation the present embodiment
When, can the real experiences of user as needed the 5th design temperature is set.
During above-mentioned automatically cleaning, the first design temperature, the second design temperature, the 3rd design temperature, the 4th setting temperature
Degree can carry out test according to the actual specification and running environment of air conditioner 10 and draw, such as the first design temperature and the 3rd
Design temperature could be arranged to -5 DEG C, and the second design temperature and the 4th design temperature could be arranged to -15 DEG C (above-mentioned numerical value are in room
In the case that interior outdoor is 20 DEG C, the result that test is drawn is carried out to a certain specific air conditioner 10, in the specific implementation can be with
According to circumstances it is adjusted within the specific limits).First setting time and the second setting time also can accordingly be set, and be avoided
Under special operation condition, the first indoor heat exchanger 111 or the second indoor heat exchanger 112 are unable to reach the second design temperature and the 4th
Design temperature.
In addition, automatically cleaning controller 150 can also be according to the first indoor heat exchanger 111 or the second indoor heat exchanger 112
Temperature determine the termination condition of automatically cleaning process, such as the first indoor heat exchanger 111 or the defrost of the second indoor heat exchanger 112
Stage duration exceedes defrost time of setting either the first indoor heat exchanger 111 or the second indoor heat exchanger 112
When temperature reaches defrost temperature (such as 50 DEG C) of setting, determine that automatically cleaning is completed.After automatically cleaning is completed, indoor set can be made
Blower fan 120 is blown, and indoor heat exchanger component is dried.
So that the first design temperature and the 3rd design temperature are arranged into -5 DEG C, the second design temperature and the 4th design temperature are set
- 15 DEG C are set to, defrost temperature setting is 50 DEG C, and the first setting time and the second setting time are arranged to 10 minutes, the 5th setting
Exemplified by temperature setting is 26 DEG C.The process for completing whole indoor set heat-exchanging component 110 is introduced, Fig. 6 is according to the present invention
The specific implementation flow chart of the indoor set automatically cleaning control method of the air conditioner 10 of one specific embodiment, the flow include：
Step S602, in the heating operations of air conditioner 10, receive the trigger signal that air conditioner 10 opens self-cleaning function；
Step S604, obtains the environment temperature of the working environment of indoor set 100, and judges whether the environment temperature is higher than 26
DEG C, if higher than 26 DEG C, step S640 is performed, performs the overall automatically cleaning process of indoor set heat-exchanging component 110；
Step S606, when environment temperature is less than 26 DEG C, refrigerant flow direction switching device is adjusted to compressor 250 to room
Interior machine heat-exchanging component 110 provides the state of compression refrigerant, namely keeps the heating state of air conditioner 10；
Step S608, indoor set blower fan 120 and outdoor unit blower fan 220 are shut down, and compressor 250 is transported by default target frequency
Turn that (goal-selling frequency selects according to indoor and outdoor temperature, such as outdoor is under conditions of 20 DEG C indoors, be could be arranged to
40Hz)；
Step S610, the coil temperature TP1 of the first indoor heat exchanger 111 is detected, reduces the aperture of electric expansion valve 130,
TP1 is set to gradually decrease down -5 DEG C；
Step S612, the aperture of electric expansion valve 130, makes the table of the first indoor heat exchanger 111 when holding TP1 drops to -5 DEG C
Face continues frosting；
Step S614, judges whether TP1 drops to -15 DEG C；
Step S616, judge that the aperture of electric expansion valve 130 continued the retention time more than 10 minutes；
Step S618, either condition meets in TP1 drops to -15 DEG C and aperture continued the retention time more than 10 minutes
When, electric expansion valve 130 is opened with prestissimo, the first indoor heat exchanger 111 is discharged heat, to carry out defrost；
Step S620, judges whether TP1 reaches defrost temperature 50 C；
Step S622, the automatically cleaning of the first indoor heat exchanger 111 terminate；
Step S624, refrigerant flow direction switching device (four-way valve) 260 commutate, and detect the disk of the second indoor heat exchanger 112
Pipe temperature TP2；
Step S626, reduce the aperture of electric expansion valve 130, TP2 is gradually decreased down -5 DEG C；
Step S628, the aperture of electric expansion valve 130, makes the table of the second indoor heat exchanger 112 when holding TP2 drops to -5 DEG C
Face continues frosting；
Step S630, judges whether TP2 drops to -15 DEG C；
Step S632, judge that the aperture of electric expansion valve 130 continued the retention time more than 10 minutes；
Step S634, either condition meets in TP2 drops to -15 DEG C and aperture continued the retention time more than 10 minutes
When, refrigerant flow direction switching device (four-way valve) 260 is commutated again, electric expansion valve 130 is opened, and makes the second indoor heat exchanger
112 release heats, to carry out defrost；
Step S636, judges whether TP2 reaches defrost temperature 50 C；
Step S638, the automatically cleaning of the second indoor heat exchanger 112 terminate.
During the above method is embodied, above-mentioned specific judgment threshold numerical value can be according to air conditioner 10
Specification, running environment, user's custom are adjusted, and above-mentioned concrete numerical value is only to enumerate.
The automatically cleaning control method of indoor set 100 of the air conditioner 10 of the present embodiment, the air conditioner 10 that is particularly suitable for use in are run on
Under heating state, the first indoor heat exchanger 111 is carried out respectively and the second indoor heat exchanger 112 performs automatically cleaning process respectively,
It is overall compared to indoor set heat-exchanging component 110 of the prior art to carry out automatically cleaning process, reduce to operating ambient temperature
Influence, prevent the big ups and downs of temperature, more preferably usage experience is brought to user.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, still can be direct according to present disclosure without departing from the spirit and scope of the present invention
It is determined that or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognized
It is set to and covers other all these variations or modifications.
Claims (11)
- A kind of 1. indoor set automatically cleaning control method of air conditioner, wherein the refrigeration system of the air conditioner is included by refrigerant pipe Indoor set heat-exchanging component, refrigerant flow direction switching device, compressor, outdoor unit heat-exchanging component and the throttling that road is sequentially connected in series Device, wherein the indoor set heat-exchanging component includes：The first indoor heat exchanger and the second indoor heat exchanger of concatenation, wherein institute State the second indoor heat exchanger and the compressor, first indoor heat exchanger are connected to by the refrigerant flow direction switching device Electric expansion valve is provided between second indoor heat exchanger, and the control method includes：Receive the trigger signal that the air conditioner opens self-cleaning function；The refrigerant flow direction switching device is adjusted to the compressor to the indoor set heat-exchanging component compression refrigeration is provided The state of agent；By the aperture for adjusting the electric expansion valve so that first indoor heat exchanger first freezes to be heated again, with described Cooling stages make its continuous surface frosting, and carry out defrost in the heating stage, and the water formed using defrost takes away attachment Pollutant, realize the automatically cleaning of first indoor heat exchanger.
- 2. control method according to claim 1, wherein, by the aperture for adjusting the electric expansion valve so that described First indoor heat exchanger the step of heating again of first freezing includes：Detect the temperature of first indoor heat exchanger；According to the aperture of electric expansion valve described in the temperature adjustment of first indoor heat exchanger so that the first indoor heat exchange First design temperature is down at a temperature of device；Keep being down to the aperture of electric expansion valve during the first design temperature at a temperature of first indoor heat exchanger, make institute The first indoor heat exchanger continuous surface frosting is stated, until meeting the first defrost condition of setting；After the first defrost condition is met, the aperture of the electric expansion valve is opened to maximum, make first interior Heat exchanger discharges heat, to carry out defrost.
- 3. control method according to claim 2, whereinThe first defrost condition includes：The second design temperature or the electricity are down at a temperature of first indoor heat exchanger The time that the aperture of sub- expansion valve is kept, second design temperature was less than the described first setting temperature more than the first setting time Degree.
- 4. control method according to claim 1, after first indoor heat exchanger completes automatically cleaning, in addition to：The refrigerant flow direction switching device is adjusted to the compressor to the outdoor unit heat-exchanging component compression refrigeration is provided The state of agent；By the aperture for adjusting the electric expansion valve so that the second indoor heat exchanger refrigeration, from its continuous surface knot Frost；After default second defrost condition is met, the refrigerant flow direction switching device is adjusted to the compressor to described Indoor set heat-exchanging component provides the state of compression refrigerant, and the aperture of the electric expansion valve is opened to maximum, makes described Second indoor heat exchanger discharges heat, and the water formed using defrost takes away the pollutant of attachment, realizes in the second Room and exchanges heat The automatically cleaning of device.
- 5. control method according to claim 4, wherein the aperture by adjusting the electric expansion valve so that described The step of two indoor heat exchangers freeze includes：Detect the temperature of second indoor heat exchanger；According to the aperture of electric expansion valve described in the temperature adjustment of second indoor heat exchanger so that exchanged heat in the second Room The 3rd design temperature is down at a temperature of device；Keep being down to the aperture of electric expansion valve during three design temperatures at a temperature of second indoor heat exchanger, make institute State heat exchanger surface in second Room and continue frosting, until meeting the second defrost condition.
- 6. the control method according to claim 4 or 5, whereinThe second defrost condition includes：The 4th design temperature or the electricity are down at a temperature of second indoor heat exchanger The time that the aperture of sub- expansion valve is kept is more than the second setting time；4th design temperature is less than the described 3rd setting temperature Degree.
- 7. control method according to claim 4, wherein, receiving the triggering letter of the air conditioner unlatching self-cleaning function Also include after number：Measure the operating ambient temperature of the air conditioner room unit；When the operating ambient temperature is less than five design temperatures, the electric expansion valve is placed in slave mode, and perform First indoor heat exchanger first freezes the process heated again；When the operating ambient temperature is higher than five design temperatures, the initial opening of the electric expansion valve is kept, and Perform the overall automatically cleaning process of the indoor set heat-exchanging component.
- 8. a kind of air conditioner, including refrigeration system and automatically cleaning controller, whereinThe refrigeration system includes：The indoor set heat-exchanging component that is sequentially connected in series by refrigerant line, refrigerant flow direction switching device, Compressor, outdoor unit heat-exchanging component and throttling arrangement, wherein the indoor set heat-exchanging component includes：The first of concatenation is indoor Heat exchanger and the second indoor heat exchanger, wherein heat exchanger is connected by the refrigerant flow direction switching device in the second Room To the compressor, electric expansion valve is provided between first indoor heat exchanger and second indoor heat exchanger；The automatically cleaning controller, is electrically connected, and be configured to the refrigeration system：Receive the air conditioner and open automatically cleaning work( The trigger signal of energy；The refrigerant flow direction switching device is adjusted to the compressor to the indoor set heat-exchanging component and provided The state of compression refrigerant；By the aperture for adjusting the electric expansion valve so that first indoor heat exchanger first freezes again Heating, to make its continuous surface frosting in the cooling stages, and defrost is carried out in the heating stage, formed using defrost Water takes away the pollutant of attachment, realizes the automatically cleaning of first indoor heat exchanger.
- 9. air conditioner according to claim 8, wherein the automatically cleaning controller is configured to：Detect the temperature of first indoor heat exchanger；According to the aperture of electric expansion valve described in the temperature adjustment of first indoor heat exchanger so that the first indoor heat exchange The first design temperature is down at a temperature of device；Keep being down to the aperture of electric expansion valve during first design temperature at a temperature of first indoor heat exchanger, Make the first indoor heat exchanger continuous surface frosting, until meeting the first defrost condition of setting；After the first defrost condition is met, the aperture of the electric expansion valve is opened to maximum, make first interior Heat exchanger discharges heat, and to carry out defrost, the first defrost condition includes：It is down at a temperature of first indoor heat exchanger The time that the aperture of second design temperature or the electric expansion valve is kept is more than the first setting time, the second setting temperature Degree is less than first design temperature.
- 10. air conditioner according to claim 8, wherein the automatically cleaning controller is configured to：After first indoor heat exchanger completes automatically cleaning, the refrigerant flow direction switching device is adjusted to the compressor The state of compression refrigerant is provided to the outdoor unit heat-exchanging component；Detect the temperature of second indoor heat exchanger；According to electronic expansion described in the temperature adjustment of second indoor heat exchanger The aperture of valve so that be down to the 3rd design temperature at a temperature of second indoor heat exchanger；Keep exchanging heat in the second Room The aperture of electric expansion valve when being down to three design temperatures at a temperature of device, continue heat exchanger surface in the second Room Frosting, until meeting default second defrost condition；After the second defrost condition is met, the refrigerant flow direction switching device is adjusted to the compressor to the room Interior machine heat-exchanging component provides the state of compression refrigerant, and the aperture of the electric expansion valve is opened to maximum, makes described the Two indoor heat exchangers discharge heat, and the water formed using defrost takes away the pollutant of attachment, realizes second indoor heat exchanger Automatically cleaning, the second defrost condition includes：Be down at a temperature of second indoor heat exchanger the 4th design temperature or The time that the aperture of the electric expansion valve is kept is more than the second setting time；4th design temperature is set less than the described 3rd Constant temperature degree.
- 11. air conditioner according to claim 8, wherein the automatically cleaning controller is configured to：After the trigger signal of the air conditioner unlatching self-cleaning function is received, the building ring of the air conditioner room unit is measured Border temperature；When the operating ambient temperature is less than five design temperatures, the electric expansion valve is placed in slave mode, and perform First indoor heat exchanger first freezes the process heated again；When the operating ambient temperature is higher than five design temperatures, the initial opening of the electric expansion valve is kept, and Perform the overall automatically cleaning process of the indoor set heat-exchanging component.
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| CN201710639786.5A CN107514683B (en) | 2017-07-31 | 2017-07-31 | Air conditioner and indoor unit self-cleaning control method thereof |
| PCT/CN2018/096851 WO2019024722A1 (en) | 2017-07-31 | 2018-07-24 | Air conditioner and self-cleaning control method for indoor unit thereof |
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| CN201710639786.5A CN107514683B (en) | 2017-07-31 | 2017-07-31 | Air conditioner and indoor unit self-cleaning control method thereof |
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| WO2019024722A1 (en) | 2019-02-07 |
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