CN109827361A - The reverse cycle defrosting method, apparatus of air-conditioning system and air-conditioning system - Google Patents
The reverse cycle defrosting method, apparatus of air-conditioning system and air-conditioning system Download PDFInfo
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- CN109827361A CN109827361A CN201910238927.1A CN201910238927A CN109827361A CN 109827361 A CN109827361 A CN 109827361A CN 201910238927 A CN201910238927 A CN 201910238927A CN 109827361 A CN109827361 A CN 109827361A
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- air
- conditioning system
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- reverse cycle
- restricting element
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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
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
-
- 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
- F25B41/38—Expansion means; Dispositions thereof specially adapted for reversible cycles, e.g. bidirectional expansion restrictors
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- 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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- General Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
This application discloses a kind of air-conditioning system and the reverse cycle defrosting method, apparatus of air-conditioning system, wherein method includes: that control air-conditioning system carries out reverse cycle defrosting；The aperture of restricting element gradually decreases in reverse cycle defrosting process control air-conditioning system.According to the reverse cycle defrosting method of the air-conditioning system of the application, by the aperture for controlling restricting element during reverse cycle defrosting, it solves since restricting element lubricating oil blocks, lead to the problem of restricting element exception, the probability of restricting element Abnormal Blocking is greatly reduced, the stability and reliability of air-conditioning system are greatly strengthened.
Description
Technical field
This application involves air-conditioning system technical field, in particular to the reverse cycle defrosting of a kind of air-conditioning system and air-conditioning system
Method, apparatus.
Background technique
Under normal circumstances, frosting problem normally heats the winter of air-conditioning system and is affected, especially cold and humidity
Biggish area, frost layer is thicker not only to weaken outdoor unit heat transfer coefficient, so that air-conditioning system heating capacity is greatly reduced, and
It continues working and also will cause compressor damage.
Currently, the reverse cycle defrosting that relatively conventional air-conditioning system defrosts, realizes general heating by four-way valve commutation
The recycled back of circulation, after four-way valve commutation, outdoor unit becomes condenser, the height of compressor outlet from the evaporator of heating operations
Warm high-pressure refrigerant gradually melts the frost layer of outdoor unit.
However, during reverse cycle defrosting, indoor and outdoor blower is in closed state, indoor almost without heat transfer,
The heat of indoor unit cartridge storage at the end of energy for defrosting derives from compressor power consumption and heats, due to being compressed after adjusting
Machine power it is lower and throttle after the degree of superheat increase suddenly, it will cause restricting element lubricating oil clogging occur, cause to throttle
Element is abnormal, and restricting element Abnormal Blocking not only results in the decline of air-conditioning system ability, reduces the stability of air-conditioning system
And reliability.
Apply for content
The embodiment of the present application is solved by providing the reverse cycle defrosting method, apparatus of a kind of air-conditioning system and air-conditioning system
In the prior art since restricting element lubricating oil blocks, leads to the problem of restricting element exception, greatly reduce restricting element
The probability of Abnormal Blocking greatly strengthens the stability and reliability of air-conditioning system.
To achieve the goals above, this application provides a kind of reverse cycle defrosting methods of air-conditioning system, including following step
Rapid: control air-conditioning system carries out reverse cycle defrosting；Restricting element opens in the air-conditioning system described in reverse cycle defrosting process control
Degree gradually decreases.
In addition, can also be had according to the reverse cycle defrosting method of the air-conditioning system of the above embodiments of the present application following additional
Technical characteristic:
According to one embodiment of the application, restricting element in the air-conditioning system described in reverse cycle defrosting process control
Aperture gradually decrease, comprising:
Obtain the operation duration of the reverse cycle defrosting；According to operation duration, the aperture regulation of the restricting element is obtained
Amount obtains the throttling according to the aperture regulation amount and the restricting element in the first default aperture of defrosting start time
The aperture at element current time.
It is described that the aperture regulation amount of the restricting element is obtained according to operation duration according to one embodiment of the application,
It include: to obtain operation duration and the default product adjusted between step-length as the aperture regulation amount.
According to one embodiment of the application, after the aperture for obtaining the restricting element current time, further includes:
The aperture at the restricting element current time is identified less than the second default aperture, the aperture for controlling the restricting element is updated to institute
State the second default aperture.
According to one embodiment of the application, the control air-conditioning system carries out reverse cycle defrosting, comprising: identifies the sky
Adjusting system needs to terminate heating, and controlling the air-conditioning system terminates to heat and stop the first preset duration；Control the air-conditioning system
Four-way valve in system is from when front direction commutates to direction initialization and stops the second preset duration；Control the air-conditioning system enter it is inverse
Circulating defrosting mode.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in control
The aperture of restricting element presets aperture before heating terminates for third；The first element of the throttling is controlled after heating from described
Third is preset aperture and is adjusted to the first default aperture, until the air-conditioning system enters defrosting mode；Wherein, described first is default
Aperture is more than or equal to the third and presets aperture.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in identification
Draught head between the air-breathing air pressure and exhaust air pressure of air-conditioning system is less than the first preset value；The air-conditioning system is controlled to touch at once
Commutation of sending out four-way valve described.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in identification
Draught head between the air-breathing air pressure and exhaust air pressure of air-conditioning system is less than the second preset value；The air-conditioning system is controlled to touch at once
Hair enters the reverse cycle defrosting mode.
According to one embodiment of the application, restricting element in the air-conditioning system described in reverse cycle defrosting process control
Aperture gradually decrease, further includes: obtain the outlet temperature of condenser in the air-conditioning system；Identify that the outlet temperature is greater than
First set temperature controls the air-conditioning system and starts to adjust the aperture of the restricting element；The outlet temperature is persistently detected,
Identify that the outlet temperature is greater than the second set temperature, control the air-conditioning system terminates reverse cycle defrosting at once.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in control
Air-conditioning system terminates reverse cycle defrosting and stops third preset duration；Four-way valve in the air-conditioning system is controlled from the setting
Front direction is worked as described in commutating in direction, and stops the 4th preset duration；The air-conditioning system is controlled to restart to heat.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in control
The aperture of restricting element is the described second default aperture before defrosting terminates；Control the first element of the throttling after defrosting from
The second default aperture is adjusted to the described first default aperture, until the air-conditioning system enters heating mode；Wherein, described
First default aperture is greater than the described second default aperture.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in identification
Draught head between the air-breathing air pressure and exhaust air pressure of air-conditioning system is less than third preset value；The air-conditioning system is controlled to touch at once
Commutation of sending out four-way valve described.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in identification
Draught head between the air-breathing air pressure and exhaust air pressure of air-conditioning system is less than the 4th preset value；It controls the air-conditioning system and enters institute
State heating mode.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in acquisition
The outlet temperature of condenser in air-conditioning system；It identifies that the outlet temperature is less than third set temperature, controls the air-conditioning system
Start to adjust the aperture of the restricting element；The outlet temperature is persistently detected, identifies the outlet temperature less than the 4th setting
Temperature, controlling the air-conditioning system terminates to heat at once.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in control
The aperture of restricting element gradually reduces to the third from the 4th default aperture after heating again and presets aperture.
To achieve the goals above, this application provides a kind of counter-circulating defrosters of air-conditioning system, comprising: the first control
Molding block carries out reverse cycle defrosting for controlling air-conditioning system；Second control module, in reverse cycle defrosting process control institute
The aperture for stating restricting element in air-conditioning system gradually decreases.
In addition, can also be had according to the counter-circulating defroster of the air-conditioning system of the above embodiments of the present application following additional
Technical characteristic:
According to one embodiment of the application, second control module is specifically used for: obtaining the reverse cycle defrosting
Operation duration；According to operation duration, the aperture regulation amount of the restricting element is obtained, according to the aperture regulation amount and the section
Fluid element obtains the aperture at the restricting element current time in the first default aperture of defrosting start time.
According to one embodiment of the application, second control module is further used for:: obtain operation duration and pre-
If adjusting the product between step-length as the aperture regulation amount.
According to one embodiment of the application, the control module obtain the restricting element current time aperture it
Afterwards, it is also used to: identifying that the aperture at the restricting element current time less than the second default aperture, controls opening for the restricting element
Degree is updated to the described second default aperture.
According to one embodiment of the application, first control module is specifically used for: identifying the air-conditioning system needs
Terminate heating, controlling the air-conditioning system terminates to heat and stop the first preset duration；Control the four-way in the air-conditioning system
Valve is from when front direction commutates to direction initialization and stops the second preset duration；It controls the air-conditioning system and enters reverse cycle defrosting mould
Formula.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: third control
Module, the aperture for controlling the restricting element preset aperture before heating terminates for third；4th control module, for controlling
It makes the first element of the throttling to adjust from the default aperture of the third to the first default aperture after heating, until the air-conditioning
System enters defrosting mode；Wherein, the described first default aperture is more than or equal to the default aperture of the third.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the first identification
Module, the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure is less than the first preset value for identification；5th
Control module triggers the four-way valve at once and changes for controlling the air-conditioning system first preset duration that terminates to stay on
To.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the second identification
Module, the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure is less than the second preset value for identification；6th
Control module is triggered at once into described and inverse is followed for controlling the air-conditioning system second preset duration that terminates to stay on
Ring defrosting mode.
According to one embodiment of the application, second control module is specifically used for: obtaining cold in the air-conditioning system
The outlet temperature of condenser；It identifies that the outlet temperature is greater than the first set temperature, controls the air-conditioning system and start described in adjustment
The aperture of restricting element；The outlet temperature is persistently detected, identifies that the outlet temperature is greater than the second set temperature, described in control
Air-conditioning system terminates reverse cycle defrosting at once.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the 7th control
Module terminates reverse cycle defrosting and stops third preset duration for controlling the air-conditioning system；8th control module, for controlling
It makes four-way valve in the air-conditioning system and is commutated to from the direction initialization and described work as front direction, and the 4th preset duration of stop；
The air-conditioning system is controlled to restart to heat.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the 9th control
Module, the aperture for controlling the restricting element are the described second default aperture before defrosting terminates；Tenth control module is used
It is adjusted from the described second default aperture to the described first default aperture after defrosting in controlling the first element of the throttling, until
The air-conditioning system enters heating mode；Wherein, the described first default aperture is greater than the described second default aperture.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: third identification
Module, the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure is less than third preset value for identification；Tenth
One control module triggers the four-way valve commutation for controlling the air-conditioning system at once.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the 4th identification
Module, the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure is less than the 4th preset value for identification；Tenth
Two control modules, for controlling the air-conditioning system into the heating mode.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: obtain mould
Block, for obtaining the outlet temperature of condenser in the air-conditioning system；13rd control module, for identification outlet temperature
Less than third set temperature, controls the air-conditioning system and start to adjust the aperture of the restricting element；14th control module is used
In the lasting detection outlet temperature, identify that the outlet temperature less than the 4th set temperature, controls the air-conditioning system at once
Terminate heating.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the 15th control
Molding block, the aperture for controlling the restricting element are gradually reduced from the 4th default aperture to described after heating again
Third presets aperture.
To achieve the goals above, present applicant proposes a kind of air-conditioning system, the inverse circulation including above-mentioned air-conditioning system
Defroster.
To achieve the goals above, it present applicant proposes a kind of electronic equipment, including memory, processor and is stored in
On reservoir and the program that can run on a processor, which is characterized in that when the processor executes described program, realize above-mentioned
The reverse cycle defrosting method of air-conditioning system.
To achieve the goals above, present applicant proposes a kind of computer readable storage medium, it is stored thereon with computer
Program when the program is executed by processor, realizes the reverse cycle defrosting method of above-mentioned air-conditioning system.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
In this application, air-conditioning system can control to carry out reverse cycle defrosting, and in reverse cycle defrosting process control air-conditioning system
The aperture of restricting element gradually decreases in system, so that compressor is discharged to the lubricants capacity in air-conditioning system during defrosting
It reduces, effectively avoids blocking because of restricting element lubricating oil, lead to the problem of restricting element exception, it is different to greatly reduce restricting element
The probability often blocked greatly strengthens the stability and reliability of air-conditioning system.
Detailed description of the invention
Fig. 1 is the flow chart according to the reverse cycle defrosting method of the air-conditioning system of the embodiment of the present application；
Fig. 2 is the flow chart according to the reverse cycle defrosting method of the air-conditioning system of the application one embodiment；
Fig. 3 is the process of the initial method of electric expansion valve in the air-conditioning system according to one specific embodiment of the application
Figure；
Fig. 4 is the aperture adjustment schematic diagram according to the restricting element of the application one embodiment under different time；
Fig. 5 is the block diagram according to the counter-circulating defroster of the air-conditioning system of the embodiment of the present application；
Fig. 6 is the block diagram according to the air-conditioning system of the embodiment of the present application；
Fig. 7 is the block diagram according to the electronic equipment of the embodiment of the present application.
Specific embodiment
The application can control air-conditioning system and carry out reverse cycle defrosting, and in reverse cycle defrosting process control air-conditioning system
The aperture of restricting element gradually decreases, so that compressor is discharged to the lubricants capacity in air-conditioning system and subtracts during defrosting
It is few, it effectively avoids blocking because of restricting element lubricating oil, leads to the problem of restricting element exception, greatly reduce restricting element exception
The probability of blocking greatly strengthens the stability and reliability of air-conditioning system.
In order to better understand the above technical scheme, the exemplary reality of the disclosure is more fully described below with reference to accompanying drawings
Apply example.Although showing the exemplary embodiment of the disclosure in attached drawing, it being understood, however, that may be realized in various forms this public affairs
It opens and should not be limited by the embodiments set forth herein.It is to be able to thoroughly understand this on the contrary, providing these embodiments
It is open, and the scope of the present disclosure can be fully disclosed to those skilled in the art.
The reverse cycle defrosting of the air-conditioning system and air-conditioning system that are proposed according to the embodiment of the present application is described with reference to the accompanying drawings
Method, apparatus.
As shown in Figure 1, the reverse cycle defrosting method of the air-conditioning system the following steps are included:
S1, control air-conditioning system carry out reverse cycle defrosting.
It is produced bigger effect it should be understood that frosting problem can normally heat in the winter to air-conditioning system, it is especially cold
The biggish area of cold and humidity, frost layer is thicker not only to weaken outdoor unit heat transfer coefficient, so that air-conditioning system heating capacity is significantly
Decline, and continue working and also will cause compressor damage.Therefore, it can control air-conditioning system reverse cycle defrosting and solve this and ask
Topic.
It according to one embodiment of the application, controls air-conditioning system and carries out reverse cycle defrosting, comprising: identification air-conditioning system needs
Terminate to heat, control air-conditioning system terminates to heat and stop the first preset duration；Four-way valve in control air-conditioning system is from working as
Front direction commutates to direction initialization and stops the second preset duration；Control air-conditioning system enters reverse cycle defrosting mode.
It should be understood that carrying out reverse cycle defrosting in control air-conditioning system, may include the following two stage: heating stops
Machine to four-way valve commutation phase and four-way valve commutated to the defrosting stage.Specifically, it can need to terminate system in identification air-conditioning system
When hot, control air-conditioning system terminates to heat and stay for some time, and when the residence time reaching the first preset duration, controls air-conditioning
Four-way valve in system commutates from when front direction to direction initialization, and air-conditioning system stays for some time, and reaches when the residence time
When the second preset duration, control air-conditioning system enters reverse cycle defrosting mode.It should be noted that direction initialization, first default
Duration and the second preset duration can be set according to the actual situation, and the first preset duration and the second preset duration can be with one
It causes, can also be inconsistent, it is not particularly limited herein.
For example, when identifying that air-conditioning system needs to terminate heating, control air-conditioning system terminates to heat and stop 40s,
Four-way valve in air-conditioning system is controlled later from when front direction commutates to direction initialization and stops 40s again, controls air-conditioning later
System enters reverse cycle defrosting mode.It should be noted that on how to identify that air-conditioning system needs end heating will below
It is described in detail, to avoid redundancy, is not described in detail herein.
S2, the aperture of restricting element gradually decreases in reverse cycle defrosting process control air-conditioning system.
Currently, the relevant technologies are when carrying out reverse cycle defrosting, it is main that general heating circulation is realized by four-way valve commutation
Recycled back, after four-way valve commutation, outdoor unit becomes condenser, the high temperature and pressure of compressor outlet from the evaporator of heating operations
Refrigerant gradually melts the frost layer of outdoor unit.During reverse cycle defrosting, indoor and outdoor blower is in closed state, indoor
Almost without heat transfer, the heat of indoor unit cartridge storage at the end of the energy for defrosting derives from compressor power consumption and heats.
Therefore, it is asked safely caused by process air-breathing ultralow pressure phenomenon to terminate defrosting process as early as possible and defrost in order to prevent
Topic, restricting element aperture is often larger during defrosting.
However, although biggish restricting element aperture can guarantee defrosting initial stage biggish flow and avoid throttling in defrosting
The abnormal phenomenon of element, but without degree of supercooling and air entry refrigerant is in saturation before being easier to cause the throttling of defrosting middle and later periods
State causes more refrigerant accumulations to cause cylinder Wet Compression with absorbing gas belt liquid in liquid storage device.It is accumulated in liquid storage device a large amount of
Refrigerant means in two devices there is a serious shortage of refrigerant, for R290 refrigeration system lower for charging amount liquid storage device storage compared with
More refrigerants not only bad for heating initial stage air-conditioning system ability, and defrosting terminate four-way valve commutation after heating initial stage
Outdoor unit lacks air-breathing caused by refrigerant and crosses the very easy safety problem for causing R290 refrigeration cycle of low-temp low-pressure.
In addition, the larger refrigeration stream speed reduction after will also result in throttling of defrosting process restricting element aperture, leads to indoor unit pipe
Refrigerant pressure drag increases in road, so that lubricating oil measures greatly, reside in low-pressure area pipeline can not be biggish by the lower mass dryness fraction of speed
Refrigerant is taken away.After normal heating restricting element aperture is restored simultaneously, two devices, which lack refrigerant (especially outdoor unit), be will cause
Compressor horsepower it is lower and throttle after the degree of superheat increase suddenly, lead to the lubricating oil clogging of restricting element, cause throttling member
Part is abnormal.
It should be understood that restricting element Abnormal Blocking not only results in the decline of air-conditioning system ability, while suction side is held
Continuous negative pressure will cause compressor damage and safety accident occur, also, open greatly or open small throttling in entire reverse cycle defrosting process
Element aperture cannot achieve the optimization of performance and safety.In addition, the duration of heating downtime point and four-way valve commutating period
It will affect the pressure difference of system height pressure area after four-way valve commutates, in compression case body caused by pressure difference is excessive caused by flass
Refrigerant discharge process band oil increases, and not only will affect the heat transfer of defrosting process, will also result in lubricating oil in system and cross and often have section
Fluid element abnormal phenomenon.
Thus to solve the above-mentioned problems, the reverse cycle defrosting method of the air-conditioning system of the embodiment of the present application, by inverse
The aperture of restricting element gradually decreases in circulating defrosting process control air-conditioning system, and improving defrosting terminates the whole temperature of compressor
Degree can avoid excessively making at the end of defrosting so that compressor is discharged to the reduction of the lubricants capacity in air-conditioning system during defrosting
Cryogen is stored in compressor and liquid storage device；Meanwhile it can avoid defrosting shutdown and heating the low-temp low-pressure after initial stage valve, Ke Yiyou again
Effect solves defrosting process and heats the extremely oily blockage problem of initial stage restricting element again.
Combined with specific embodiments below, be described in detail how in reverse cycle defrosting process control air-conditioning system restricting element
Aperture gradually decrease, be described as follows:
Fig. 2 is the flow chart according to the reverse cycle defrosting method of the air-conditioning system shown in a specific illustrative embodiment.Such as
Shown in Fig. 2, in the specific embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system includes following step
It is rapid:
S201, control air-conditioning system carry out reverse cycle defrosting.
S202 obtains the operation duration of reverse cycle defrosting.
It should be understood that timing can be started by timer when controlling air-conditioning system and carrying out reverse cycle defrosting, with
Obtain the operation duration of air-conditioning system reverse cycle defrosting.Wherein, the method for the operation duration of above-mentioned acquisition reverse cycle defrosting is only
Illustratively, not as the limitation of the application.
S203 obtains the aperture regulation amount of restricting element, is existed according to aperture regulation amount and restricting element according to operation duration
The first default aperture of defrosting start time obtains the aperture at restricting element current time.
In one embodiment of the application, according to operation duration, the aperture regulation amount of restricting element is obtained, comprising: obtain
Take operation duration and the default product adjusted between step-length as aperture regulation amount.Wherein it is possible to be previously provided with operation duration
Mapping relations between the aperture regulation amount of restricting element, for example, can be by multiplying between operation duration and default adjusting step-length
Product is used as aperture regulation amount, and the default step-length that adjusts can be set according to the actual situation, in the operation for obtaining reverse cycle defrosting
After duration, aperture regulation amount can be obtained by calculating.
For example, as shown in figure 3, reverse cycle defrosting can be divided into two stages, reverse cycle defrosting process 3-1 stage and inverse
The circulating defrosting process 3-2 stage, defrost start when first preset aperture can be for B2, and in defrosting start time, throttling member
The aperture of part is gradually decreased by B2 as B3, and keeps the aperture B3 of restricting element constant in the reverse cycle defrosting process 3-1 stage.It is inverse
The circulating defrosting process 3-2 stage, it is assumed that the default step-length that adjusts can be Δ B, after getting the operation duration t of reverse cycle defrosting,
The aperture regulation amount of restricting element: Δ B*t can be obtained, wherein * is the product between operation duration and default adjusting step-length,
To which the first default aperture according to aperture regulation amount and restricting element in defrosting start time obtains restricting element current time
Aperture: B=B- Δ B*t.
It should be noted that the size of the first default aperture B2 and the maximum flow diameter and air-conditioning system pipe of restricting element
Relationship between diameter is related, when the maximum flow diameter of restricting element is less than 0.5 times of air-conditioning system caliber, the first default aperture
B2 is the maximum opening that restricting element allows, and otherwise the first default aperture B2 is 0.5 times of air-conditioning system caliber to guarantee high-low pressure
The rapid equalisation of area's pressure, the time for shortening the decline of height pressure difference；The size of the aperture B3 of restricting element is so that condensation temperature
The time for being raised to tep1 is most short, and the minimum value B3 of the 5th default aperture B3minThe numerical value of >=2B1；The default step-length that adjusts can be Δ
Constant of the B between 0-0.1B2；Operation duration t is that the constant and unit between 0-30 are the second.
According to one embodiment of the application, after the aperture for obtaining restricting element current time, further includes: identification throttling
For the aperture at element current time less than the second default aperture, the aperture for controlling restricting element is updated to the second default aperture.
It is understood that the increase of the operation duration with reverse cycle defrosting, the aperture meeting at restricting element current time
It is smaller and smaller, to guarantee the effect to defrost, as shown in figure 3, in the reverse cycle defrosting process 3-2 stage, when restricting element is current
When the aperture at quarter is less than the second default aperture B5, the aperture at control restricting element current time is that the second default aperture B5 is constant,
To effectively improve defrosting effect.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, as shown in figure 4, also wrapping
Include following steps:
S401, the aperture for controlling restricting element preset aperture before heating terminates for third.
S402, the first element of control throttling are preset aperture from third after heating and are adjusted to the first default aperture, until
Air-conditioning system enters defrosting mode；Wherein, the first default aperture is more than or equal to the default aperture of third.
It should be noted that the size that third presets aperture B1 is so that corresponding when heating operations delivery temperature td1 stablizes
Restricting element aperture, wherein the value range of delivery temperature td1 are as follows:+15 DEG C of environment temperature >=td1 >=+8 DEG C of environment temperature,
Also, when delivery temperature td1 is determined, a corresponding determining third presets aperture B1, and delivery temperature td1 is in value model
When enclosing interior fluctuation, third is preset aperture B1 and also can accordingly be fluctuated, but third presets restricting element caused by aperture B1 fluctuation and circulates
Area change range is less than 4% circulation area；The minimum value B5 of second default aperture B5min≥0.8B1。
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: identification air-conditioning
Draught head between the air-breathing air pressure and exhaust air pressure of system is less than the first preset value；Control air-conditioning system triggers four-way valve at once
Commutation.
It should be understood that can judge whether that heating is shut down according to the draught head between air-breathing air pressure and exhaust air pressure, when
Draught head between air-breathing air pressure and exhaust air pressure is less than certain value, such as when the first preset value, and control air-conditioning system terminates to make
Heat, and triggering four-way valve commutation at once, wherein the commutation of the four-way valve of control triggering at once is idealization operation, in practical control
When, allow that there are 3s errors.Wherein, the first preset value can be set according to the actual situation by those skilled in the art, herein
It is not specifically limited.
For example, the first preset value can be Δ p1, if Δ p1 is 0.03MPa, as the air-breathing air pressure of air-conditioning system and row
When draught head between gas air pressure is less than Δ p1, control air-conditioning system terminates to heat, and control four-way valve starts to commutate at once.It needs
It is noted that above-mentioned example is exemplary only, limited not as to the application.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: identification air-conditioning
Draught head between the air-breathing air pressure and exhaust air pressure of system is less than the second preset value；Control air-conditioning system is triggered at once into inverse
Circulating defrosting mode.
It should be understood that the embodiment of the present application can also be according to the gas between the air-breathing air pressure and exhaust air pressure of air-conditioning system
Pressure difference judges whether that four-way valve commutation terminates, and the draught head between air-breathing air pressure and exhaust air pressure is less than certain value, such as
When the second preset value, indicate that air-conditioning system four-way valve has commutated to direction initialization, i.e., commutation terminates, and controls air-conditioning system at once
Into reverse cycle defrosting mode.Wherein, the second preset value can be set according to the actual situation by those skilled in the art, herein
It is not specifically limited.
For example, the second preset value can be Δ p2, if Δ p2 is 0.03MPa, as the air-breathing air pressure of air-conditioning system and row
When draught head between gas air pressure is less than Δ p2, and control air-conditioning system enters reverse cycle defrosting mode at once.It needs to illustrate
It is that above-mentioned example is exemplary only, not as the limitation to the application.
It should be noted that Δ p1 and Δ p2 value range for 0.001~0.05MPa and can meet 0.8 Δ of Δ p2 <
P1, the immediate value in selection range when size relation exceeds value range.And when air-conditioning system does not have acquisition pressure difference item
When part, 10-60s can be stopped after control air-conditioning system terminates heating, control air-conditioning system triggers four-way valve commutation at once；And
And enter inverse follow by after front direction commutates to direction initialization, stopping 10-60s, control air-conditioning system in air-conditioning system four-way valve
Ring defrosting mode, above-mentioned stay time is exemplary only, is not particularly limited.
Further, according to one embodiment of the application, throttle member in reverse cycle defrosting process control air-conditioning system
The aperture of part gradually decreases, further includes: obtains the outlet temperature of condenser in air-conditioning system；Identification outlet temperature is greater than first and sets
Determine temperature, control air-conditioning system starts to adjust the aperture of restricting element；Persistently detect outlet temperature, identification outlet temperature is greater than the
Two set temperatures, control air-conditioning system terminate reverse cycle defrosting at once.
It is understood that the embodiment of the present application can also be according to the outlet temperature of condenser during reverse cycle defrosting
The aperture of restricting element is adjusted, such as the outlet temperature of condenser in air-conditioning system can be obtained by temperature sensor,
When the outlet temperature of condenser is greater than certain value, such as when the first set temperature, starts the aperture for adjusting restricting element, work as condensation
When the outlet temperature of device is greater than the second set temperature, control air-conditioning system terminates reverse cycle defrosting at once.
For example, as shown in figure 3, in reverse cycle defrosting start time, the aperture of restricting element is B2, if cold at this time
When the outlet temperature of condenser is greater than tep1, the aperture of restricting element is gradually decrease to B3 by B2；And it is in this stage, persistently right
The outlet temperature of condenser is detected, and when the outlet temperature of condenser is greater than tep2, control air-conditioning system terminates inverse at once
Circulating defrosting.The aperture for adjusting restricting element by the outlet temperature of condenser as a result, so that the aperture regulation of restricting element is more
Be it is accurate, improve defrosting adjust obtain high efficiency.
It should be noted that the entrance of condenser can be determined according to refrigerant flow direction in air-conditioning system refrigeration cycle
Position, for the value range of tep1 at -1~8 DEG C, the value range of tep2 meets tep2 > tep1 at 8~14 DEG C.
As a result, by the control to duration during reverse cycle defrosting and restricting element aperture, four-way valve commutation can avoid
Rear a large amount of refrigerants of oil sump shwoot simultaneously sweep along lubricating oil to go out compressor, and compressor during reverse cycle defrosting can be effectively prevented
Oil sump, which dissolves a large amount of refrigerants, causes viscosity too low, guarantees that mechanical part normally lubricate and sealed, while avoidable can be
The extremely oily clogging of restricting element that system occurs after heating booting, significantly enhances the stability of air-conditioner system operation
And reliability.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: control air-conditioning
System finishing reverse cycle defrosting simultaneously stops third preset duration；Four-way valve in control air-conditioning system is commutated to from direction initialization works as
Front direction, and stop the 4th preset duration；Control air-conditioning system restarts to heat.
It should be understood that after control air-conditioning system terminates reverse cycle defrosting, when air-conditioning system can control to stop one section
Between, when the residence time reaching third preset duration, the four-way valve controlled in air-conditioning system commutates from direction initialization to working as front
To, and control air-conditioning system and stay for some time, when the residence time reaching four preset durations, control air-conditioning system is opened again
Begin to heat.It should be noted that third preset duration and the 4th preset duration can be set according to the actual situation, third
Preset duration can be consistent with the 4th preset duration, can also be inconsistent, is not particularly limited herein.
For example, when identifying that air-conditioning system terminates reverse cycle defrosting, control air-conditioning system terminates reverse cycle defrosting, and
40s is stopped, air-conditioning system is controlled later and commutates from direction initialization to work as front direction, and stop 40s again, later control air-conditioning system
System restarts to heat.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in control
The aperture of restricting element is the described second default aperture before defrosting terminates；Control the first element of the throttling after defrosting from
The second default aperture is adjusted to the described first default aperture, until the air-conditioning system enters heating mode；Wherein, described
First default aperture is greater than the described second default aperture.
It should be understood that as shown in figure 3, control air-conditioning system terminate reverse cycle defrosting when, illustrate at this time without after
Continuous defrosting, can be to indoor heating, and the second default aperture B5 when can control the aperture of restricting element by reverse cycle defrosting increases
To the first default aperture B2, start to heat to control air-conditioning system.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in identification
Draught head between the air-breathing air pressure and exhaust air pressure of air-conditioning system is less than third preset value；The air-conditioning system is controlled to touch at once
Commutation of sending out four-way valve described.
For example, third preset value can be Δ p3, if Δ p3 is 0.03MPa, as the air-breathing air pressure of air-conditioning system and row
When draught head between gas air pressure is less than Δ p3, four-way valve is controlled at once and starts to commutate.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: described in identification
Draught head between the air-breathing air pressure and exhaust air pressure of air-conditioning system is less than the 4th preset value；It controls the air-conditioning system and enters institute
State heating mode.
For example, the 4th preset value can be Δ p4, if Δ p4 is 0.03MPa, as the air-breathing air pressure of air-conditioning system and row
When draught head between gas air pressure is less than Δ p4, air-conditioning system heating booting is controlled at once.
It should be noted that Δ p3 and Δ p4 value range for 0.001~0.05MPa and can meet Δ p3 > Δ p1,
0.8 Δ p3 of Δ p4 <, the immediate value in selection range when size relation exceeds value range.And when air-conditioning system does not have
When acquiring pressure differential, 10-60s can be stopped after control air-conditioning system terminates defrosting, control air-conditioning system triggers four-way at once
Valve commutation；And it is commutated by direction initialization to after front direction in air-conditioning system four-way valve, stops 10-60s, control air-conditioning system
Heating booting, and the aperture of restricting element is gradually decrease to the 4th default aperture B4, above-mentioned stop from the first default aperture B2
Duration is exemplary only, is not particularly limited.Wherein, the size of the 4th default aperture B4 is so that pressure of inspiration(Pi) is increased to one
As heating operations pressure time it is most short, and the maximum value B4 of the 4th default aperture B4maxThe numerical value of≤3B1.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: obtain air-conditioning
The outlet temperature of condenser in system；Identify that outlet temperature is less than third set temperature, control air-conditioning system starts adjustment throttling
The aperture of element；Outlet temperature is persistently detected, less than the 4th set temperature, control air-conditioning system terminates identification outlet temperature at once
Heating.
As shown in figure 3, after air-conditioning system heating booting, it may include heating booting to heating aperture starts changes phase 6-
1 starts to be changed to heating two stages of shutdown phase 6-2 with heating aperture, starts changes phase in heating booting extremely heating aperture
6-1 can judge whether to terminate the stage according to condensator outlet temperature, such as set temperature when condensator outlet temperature is less than third
When spending, wherein third set temperature can be tep3, and the aperture for controlling restricting element is reduced to third from the 4th default aperture B4
Default aperture B1；Can also be judged whether according to condensator outlet temperature, which terminates heating aperture, starts to be changed to heating shutdown phase 6-
2, such as when condensator outlet temperature is less than four set temperature values, wherein the 4th set temperature value can be tep4, and control is empty
Adjusting system terminates to heat at once.
It should be noted that the entrance of condenser can be determined according to refrigerant flow direction in air-conditioning system refrigeration cycle
Position, for the value range of tep3 at -8~2 DEG C, the value range of tep4 can be -6~-18 DEG C, and meet tep4 < tep3.
According to one embodiment of the application, the reverse cycle defrosting method of above-mentioned air-conditioning system, further includes: control throttling
The aperture of element gradually reduces to third from the 4th default aperture after heating again and presets aperture.
That is, as shown in figure 3, the aperture of restricting element will be reduced from the 4th default aperture B4 after heating again
Aperture B1 is preset for third, to guarantee heating effect, to greatly enhance the stability and reliability of air-conditioner system operation.
In addition, the opening size of above-mentioned restricting element is numerical value ideally, practical aperture can have fluctuation, but
Fluctuation range must not exceed 10%；The shutdown of air-conditioning system in the application is that Air-condition system control compressor shuts down,
It does not include artificial power-off shutdown behavior；And it shuts down in heating to four-way valve commutation phase 1, four-way valve and commutates to defrosting booting rank
It is not only to inhale that section 2, defrosting shutdown to four-way valve commutation phase 4 and four-way valve, which commutate to the heating end judgment basis of start-up phase 5,
Draught head between gas air pressure and exhaust air pressure, while each stage duration is respectively less than and is equal to 60s, and is not having pressure difference acquisition
When condition, it can directly take the constant between 10-60s as end judgment basis.
According to the reverse cycle defrosting method of the air-conditioning system of the embodiment of the present application, controllable air-conditioning system carries out inverse circulation and removes
Frost, and the aperture of restricting element gradually decreases in reverse cycle defrosting process control air-conditioning system.As a result, not by defrosting process
The disconnected temperature for reducing restricting element aperture and improving defrosting end compressor, compressor oil sump is molten during defrosting can be effectively prevented
Solving a large amount of refrigerants causes viscosity too low, guarantees that mechanical part is normally lubricated and sealed, and due to throttling during defrosting
Element aperture reduces so that delivery temperature improves, and the intracorporal Oil-gas Separation of motor upper casing is more abundant, is brought to air-conditioning from exhaust outlet
The lubricating oil of system is less, and defrosting terminates resident refrigerant total amount within the compressor and reduces, and the refrigerant in air-conditioning system is total
The extremely oily clogging of restricting element that the less avoidable system of more and lubricating oil occurs after heating booting is measured, is greatly reduced
The probability of restricting element Abnormal Blocking significantly enhances the stability and reliability of air-conditioning system operation.
Fig. 5 is the block diagram of the counter-circulating defroster of the air-conditioning system of the embodiment of the present application.As shown in figure 5, should
The counter-circulating defroster 10 of air-conditioning system includes: the first control module 100 and the second control module 200.
Wherein, the first control module 100 carries out reverse cycle defrosting for controlling air-conditioning system.Second control module 200 is used
It is gradually decreased in the aperture of the restricting element in reverse cycle defrosting process control air-conditioning system.
According to one embodiment of the application, second control module is specifically used for: obtaining the reverse cycle defrosting
Operation duration；According to operation duration, the aperture regulation amount of the restricting element is obtained, according to the aperture regulation amount and the section
Fluid element obtains the aperture at the restricting element current time in the first default aperture of defrosting start time.
According to one embodiment of the application, second control module is further used for:: obtain operation duration and pre-
If adjusting the product between step-length as the aperture regulation amount.
According to one embodiment of the application, the control module obtain the restricting element current time aperture it
Afterwards, it is also used to: identifying that the aperture at the restricting element current time less than the second default aperture, controls opening for the restricting element
Degree is updated to the described second default aperture.
According to one embodiment of the application, first control module is specifically used for: identifying the air-conditioning system needs
Terminate heating, controlling the air-conditioning system terminates to heat and stop the first preset duration；Control the four-way in the air-conditioning system
Valve is from when front direction commutates to direction initialization and stops the second preset duration；It controls the air-conditioning system and enters reverse cycle defrosting mould
Formula.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: third control
Module, the aperture for controlling the restricting element preset aperture before heating terminates for third；4th control module, for controlling
It makes the first element of the throttling to adjust from the default aperture of the third to the first default aperture after heating, until the air-conditioning
System enters defrosting mode；Wherein, the described first default aperture is more than or equal to the default aperture of the third.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the first identification
Module, the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure is less than the first preset value for identification；5th
Control module triggers the four-way valve at once and changes for controlling the air-conditioning system first preset duration that terminates to stay on
To.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the second identification
Module, the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure is less than the second preset value for identification；6th
Control module is triggered at once into described and inverse is followed for controlling the air-conditioning system second preset duration that terminates to stay on
Ring defrosting mode.
According to one embodiment of the application, second control module is specifically used for: obtaining cold in the air-conditioning system
The outlet temperature of condenser；It identifies that the outlet temperature is greater than the first set temperature, controls the air-conditioning system and start described in adjustment
The aperture of restricting element；The outlet temperature is persistently detected, identifies that the outlet temperature is greater than the second set temperature, described in control
Air-conditioning system terminates reverse cycle defrosting at once.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the 7th control
Module terminates reverse cycle defrosting and stops third preset duration for controlling the air-conditioning system；8th control module, for controlling
It makes four-way valve in the air-conditioning system and is commutated to from the direction initialization and described work as front direction, and the 4th preset duration of stop；
The air-conditioning system is controlled to restart to heat.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the 9th control
Module, the aperture for controlling the restricting element are the described second default aperture before defrosting terminates；Tenth control module is used
It is adjusted from the described second default aperture to the described first default aperture after defrosting in controlling the first element of the throttling, until
The air-conditioning system enters heating mode；Wherein, the described first default aperture is greater than the described second default aperture.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: third identification
Module, the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure is less than third preset value for identification；Tenth
One control module triggers the four-way valve commutation for controlling the air-conditioning system at once.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the 4th identification
Module, the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure is less than the 4th preset value for identification；Tenth
Two control modules, for controlling the air-conditioning system into the heating mode.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: obtain mould
Block, for obtaining the outlet temperature of condenser in the air-conditioning system；13rd control module, for identification outlet temperature
Less than third set temperature, controls the air-conditioning system and start to adjust the aperture of the restricting element；14th control module is used
In the lasting detection outlet temperature, identify that the outlet temperature less than the 4th set temperature, controls the air-conditioning system at once
Terminate heating.
According to one embodiment of the application, the counter-circulating defroster of above-mentioned air-conditioning system, further includes: the 15th control
Molding block, the aperture for controlling the restricting element are gradually reduced from the 4th default aperture to described after heating again
Third presets aperture.
It is proposed according to the embodiment of the present application, air-conditioning system can be controlled by the first control module and carry out reverse cycle defrosting,
And the aperture of restricting element gradually decreases in reverse cycle defrosting process control air-conditioning system by the second control module.As a result,
Constantly reduce the temperature that restricting element aperture improves defrosting end compressor by the process that defrosts, defrosting process can be effectively prevented
Middle compressor oil sump, which dissolves a large amount of refrigerants, causes viscosity too low, guarantees that mechanical part is normally lubricated and sealed, and defrost
In the process since restricting element aperture reduces so that delivery temperature raising, the intracorporal Oil-gas Separation of motor upper casing is more abundant, from row
The lubricating oil that port is brought to air-conditioning system is less, and defrosting terminates resident refrigerant total amount within the compressor and reduces, air-conditioning system
The restricting element that refrigerant total amount in system is more and the less avoidable system of lubricating oil occurs after heating booting is extremely oily stifled
Fill in phenomenon, greatly reduce the probability of restricting element Abnormal Blocking, significantly enhance air-conditioning system operation stability and can
By property.
As shown in fig. 6, the embodiment of the present application proposes a kind of air-conditioning system 30, which includes above-mentioned air-conditioning
The counter-circulating defroster 20 of system.
According to the air-conditioning system that the embodiment of the present application proposes, by the counter-circulating defroster of above-mentioned air-conditioning system,
Defrosting process constantly reduces the temperature that restricting element aperture improves defrosting end compressor, and defrosting can be effectively prevented and press in the process
Contracting engine oil pond, which dissolves a large amount of refrigerants, causes viscosity too low, guarantees that mechanical part is normally lubricated and sealed, and the process that defrosts
In due to restricting element aperture reduce so that delivery temperature improve, the intracorporal Oil-gas Separation of motor upper casing is more abundant, from exhaust outlet
The lubricating oil for being brought to air-conditioning system is less, and defrosting terminates resident refrigerant total amount within the compressor and reduces, in air-conditioning system
The extremely oily blocking of the restricting element that refrigerant total amount is more and the less avoidable system of lubricating oil occurs after heating booting it is existing
As greatly reducing the probability of restricting element Abnormal Blocking, significantly enhancing the stability and reliability of air-conditioning system operation.
As shown in fig. 7, the embodiment of the present application also proposed a kind of electronic equipment 1000 comprising: memory 1100, processing
Device 1200 and it is stored in the computer program that can be run on memory 1200 and on a processor, processor executes program, with reality
The reverse cycle defrosting method of existing above-mentioned air-conditioning system.
The embodiment of the present application also proposed a kind of computer readable storage medium, be stored thereon with computer program, the journey
When sequence is executed by processor, the reverse cycle defrosting method of above-mentioned air-conditioning system is realized.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
It should be noted that in the claims, any reference symbol between parentheses should not be configured to power
The limitation that benefit requires.Word "comprising" does not exclude the presence of component or step not listed in the claims.Before component
Word "a" or "an" does not exclude the presence of multiple such components.The application can be by means of including several different components
It hardware and is realized by means of properly programmed computer.In the unit claims listing several devices, these are filled
Several in setting, which can be, to be embodied by the same item of hardware.The use of word first, second, and third is not
Indicate any sequence.These words can be construed to title.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (19)
1. a kind of reverse cycle defrosting method of air-conditioning system, which comprises the following steps:
It controls air-conditioning system and carries out reverse cycle defrosting；
The aperture of restricting element gradually decreases in the air-conditioning system described in reverse cycle defrosting process control.
2. the method according to claim 1, wherein the air-conditioning system described in reverse cycle defrosting process control
The aperture of middle restricting element gradually decreases, comprising:
Obtain the operation duration of the reverse cycle defrosting；
According to operation duration, the aperture regulation amount of the restricting element is obtained, according to the aperture regulation amount and throttling member
Part obtains the aperture at the restricting element current time in the first default aperture of defrosting start time.
3. according to the method described in claim 2, obtaining the restricting element it is characterized in that, described according to operation duration
Aperture regulation amount, comprising:
The operation duration and the default product adjusted between step-length are obtained as the aperture regulation amount.
4. according to the method in claim 2 or 3, which is characterized in that described to obtain opening for the restricting element current time
After degree, further includes:
The aperture at the restricting element current time is identified less than the second default aperture, the aperture for controlling the restricting element updates
For the described second default aperture.
5. method according to claim 1-4, which is characterized in that the control air-conditioning system carries out inverse circulation and removes
Frost, comprising:
Identify that the air-conditioning system needs to terminate heating, controlling the air-conditioning system terminates to heat and stop the first preset duration；
The four-way valve in the air-conditioning system is controlled from when front direction commutates to direction initialization and stops the second preset duration；
It controls the air-conditioning system and enters reverse cycle defrosting mode.
6. according to the method described in claim 5, it is characterized by further comprising:
The aperture for controlling the restricting element presets aperture before heating terminates for third；
It controls the first element of the throttling to adjust from the default aperture of the third to the first default aperture after heating, until institute
It states air-conditioning system and enters defrosting mode；Wherein, the described first default aperture is more than or equal to the default aperture of the third.
7. according to the method described in claim 5, it is characterized by further comprising:
Identify the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure less than the first preset value；
It controls the air-conditioning system and triggers the four-way valve commutation at once.
8. the method according to claim 5 or 7, which is characterized in that further include:
Identify the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure less than the second preset value；
The air-conditioning system is controlled to be triggered at once into the reverse cycle defrosting mode.
9. according to the method described in claim 5, it is characterized in that, the air-conditioning system described in reverse cycle defrosting process control
The aperture of middle restricting element gradually decreases, further includes:
Obtain the outlet temperature of condenser in the air-conditioning system；
It identifies that the outlet temperature is greater than the first set temperature, controls the air-conditioning system and start to adjust opening for the restricting element
Degree；
The outlet temperature is persistently detected, identifies that the outlet temperature is greater than the second set temperature, it is vertical to control the air-conditioning system
Carving terminates reverse cycle defrosting.
10. according to the method described in claim 5, it is characterized by further comprising:
Controlling the air-conditioning system terminates reverse cycle defrosting and stops third preset duration；
Control four-way valve in the air-conditioning system from the direction initialization commutate to it is described work as front direction, and stop the 4th and preset
Duration；
The air-conditioning system is controlled to restart to heat.
11. according to the method described in claim 10, it is characterized by further comprising:
The aperture for controlling the restricting element is the described second default aperture before defrosting terminates；
It controls the first element of the throttling to adjust from the described second default aperture to the described first default aperture after defrosting, directly
Enter heating mode to the air-conditioning system；Wherein, the described first default aperture is greater than the described second default aperture.
12. according to the method described in claim 10, it is characterized by further comprising:
Identify that the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure is less than third preset value；
It controls the air-conditioning system and triggers the four-way valve commutation at once.
13. method described in 0 or 12 according to claim 1, which is characterized in that further include:
Identify the draught head between the air-breathing air pressure of the air-conditioning system and exhaust air pressure less than the 4th preset value；
The air-conditioning system is controlled into the heating mode.
14. according to the method described in claim 10, it is characterized by further comprising:
Obtain the outlet temperature of condenser in the air-conditioning system；
It identifies that the outlet temperature is less than third set temperature, controls the air-conditioning system and start to adjust opening for the restricting element
Degree；
The outlet temperature is persistently detected, identifies that less than the 4th set temperature, it is vertical to control the air-conditioning system for the outlet temperature
Carving terminates heating.
15. according to the method described in claim 10, it is characterized by further comprising:
Control the aperture of the restricting element gradually reduced after heating again from the 4th default aperture it is pre- to the third
If aperture.
16. a kind of counter-circulating defroster of air-conditioning system characterized by comprising
First control module carries out reverse cycle defrosting for controlling air-conditioning system；
Second control module, the aperture for restricting element in the air-conditioning system described in reverse cycle defrosting process control gradually drop
It is low.
17. a kind of air-conditioning system characterized by comprising the reverse cycle defrosting dress of air-conditioning system as claimed in claim 16
It sets.
18. a kind of electronic equipment, which is characterized in that on a memory and can be in processor including memory, processor and storage
The program of upper operation, which is characterized in that when the processor executes described program, realize as described in any in claim 1-15
Air-conditioning system reverse cycle defrosting method.
19. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
The reverse cycle defrosting method of the air-conditioning system as described in any in claim 1-15 is realized when execution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/128711 WO2020135589A1 (en) | 2018-12-29 | 2019-12-26 | Air conditioning system, and reverse-cycle defrosting method and device for same |
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| CN201811634354 | 2018-12-29 | ||
| CN2018116343546 | 2018-12-29 |
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| WO (1) | WO2020135589A1 (en) |
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| CN110822629A (en) * | 2019-11-22 | 2020-02-21 | 广东美的制冷设备有限公司 | Air conditioner refrigerant leakage detection method, air conditioner and readable storage medium |
| CN110848886A (en) * | 2019-11-28 | 2020-02-28 | 广东美的制冷设备有限公司 | Air conditioner, defrosting method thereof and computer readable storage medium |
| WO2020135589A1 (en) * | 2018-12-29 | 2020-07-02 | 广东美的制冷设备有限公司 | Air conditioning system, and reverse-cycle defrosting method and device for same |
| CN111412684A (en) * | 2020-04-20 | 2020-07-14 | 珠海格力电器股份有限公司 | Throttling element failure control method and air conditioner |
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| CN113465125B (en) * | 2021-06-17 | 2023-05-26 | 青岛海尔空调电子有限公司 | Defrosting control method, computer readable storage medium and control device for air conditioner |
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| WO2020135589A1 (en) | 2020-07-02 |
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