CN110057025A - Control method, device, computer product and the air-conditioning of air conditioner electronic expansion valve - Google Patents
Control method, device, computer product and the air-conditioning of air conditioner electronic expansion valve Download PDFInfo
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- CN110057025A CN110057025A CN201910290478.5A CN201910290478A CN110057025A CN 110057025 A CN110057025 A CN 110057025A CN 201910290478 A CN201910290478 A CN 201910290478A CN 110057025 A CN110057025 A CN 110057025A
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- Prior art keywords
- expansion valve
- air
- electric expansion
- indoor unit
- air conditioner
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The present invention discloses control method, device, computer product and the air-conditioning of a kind of air conditioner electronic expansion valve, is related to air-conditioning technical field, the case where to improve or correct electric expansion valve coolant leakage.Wherein, the control method of air conditioner electronic expansion valve includes: to obtain the coil temperature and indoor environment temperature of air conditioner indoor unit in the power-offstate；Judge whether air-conditioning meets the entry condition of coolant leakage amendment process；If so, controlling electric expansion valve to be regulated using the corresponding electric expansion valve of the indoor unit for meeting entry condition as electric expansion valve to be regulated and entering coolant leakage amendment process: adjusting electric expansion valve valve opening δ E to be regulated1Step；t2After time, adjusts electric expansion valve to be regulated and close valve δ E2Step；Wherein, δ E2> δ E1；If it is not, then continuing the judgement whether air-conditioning meets the entry condition of coolant leakage amendment process.The control method of air conditioner electronic expansion valve provided by the invention is for the case where improving or correcting electric expansion valve coolant leakage.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to a kind of control methods of air conditioner electronic expansion valve, device, calculating
Machine product and air-conditioning.
Background technique
It is dragged in more or multi-online air-conditioning system (i.e. the air-conditioning system that an outdoor unit drives more indoor units) one, usually
It is throttled using refrigerant of the electric expansion valve to air-conditioning system.Under refrigeration or dehumidification mode, in case of the interior shut down
The corresponding electric expansion valve of machine is not closed completely close situation, can make refrigerant at the corresponding electric expansion valve of indoor unit to have shut down
It reveals, easily leads to refrigerant energy loss, cause energy waste, while will also result in the indoor unit poor refrigerating efficiency of booting
And one drag unbalanced problem of freezing in more or multi-online air-conditioning system, influences the experience that user uses air-conditioning.
Summary of the invention
The embodiment of the present invention provides control method, device, computer product and the air-conditioning of a kind of air conditioner electronic expansion valve,
In the case that refrigerant leaks at the corresponding electric expansion valve of the indoor unit to have shut down, by opening electric expansion valve
Degree is controlled, the case where to improve or correct electric expansion valve coolant leakage.
The embodiment of the present invention adopts the following technical scheme that
In a first aspect, the embodiment of the present invention provides a kind of control method of air conditioner electronic expansion valve, comprising: obtain air-conditioning
The coil temperature and indoor environment temperature of indoor unit in the power-offstate.Judge whether air-conditioning meets coolant leakage amendment process
The entry condition of entry condition, the coolant leakage amendment process includes: in each indoor unit of shutdown, at least one indoor unit exists
T1 meets T in the period alwaysami-Tcoil≥δT；Wherein, TamiFor the corresponding indoor environment temperature of the indoor unit, TcoilFor institute
The coil temperature of indoor unit is stated, δ T is fiducial temperature.If so, the corresponding electronics of indoor unit for meeting the entry condition is swollen
Swollen valve controls the electric expansion valve to be regulated and enters coolant leakage amendment process: adjusting as electric expansion valve to be regulated
Save the electric expansion valve valve opening δ E to be regulated1Step；t2After time, adjusts the electric expansion valve to be regulated and close valve δ E2Step；Its
In, δ E2> δ E1.If it is not, then continuing the judgement whether air-conditioning meets the entry condition of coolant leakage amendment process.
The control method of air conditioner electronic expansion valve provided in an embodiment of the present invention utilizes the corresponding room of the indoor unit of each shutdown
The size of interior environment temperature and the difference of coil temperature judges whether occur at the corresponding electric expansion valve of indoor unit to have shut down
In the case where leaking, and leak at the corresponding electric expansion valve of the indoor unit to have shut down, make electric expansion valve to be regulated
Process is corrected into coolant leakage, is adjusted by the aperture to the electric expansion valve to be regulated, makes the electricity to be regulated
Sub- expansion valve completely closes, and avoids generation secondary refrigerant leakage at electric expansion valve, reduces refrigerant energy loss, also ensure simultaneously
The indoor unit of booting can reach preferable refrigeration effect, increase the reliability of air-conditioning, improve the body that user uses air-conditioning
It tests.
Optionally, the δ E1Value range be the electric expansion valve to be regulated total step number 8%~15%, institute
State δ E2Value range be the electric expansion valve to be regulated total step number 105~115%.
Optionally, during judging whether air-conditioning meets the entry condition of coolant leakage amendment process and described
Electric expansion valve to be regulated enters after the coolant leakage amendment process, and the control method of the air conditioner electronic expansion valve is also wrapped
Include: real-time judge is respectively shut down in indoor unit, if coil temperature corresponding at least one indoor unit is in t3In period always
Meet Tcoil< T1, and continue t3Time；Wherein, T1For shutdown temperature.If so, sending halt instruction to compressor, and export
Meet Tcoil< T1Electric expansion valve corresponding to the indoor unit of condition reveals fault warning.
Optionally, after described the step of sending halt instruction to compressor, the controlling party of the air conditioner electronic expansion valve
Method further include: the time of S3 ', compressor shutdown are greater than or equal to t4In the case where time, judgement continuously stops compressor transmission
Whether the number of machine instruction is greater than or equal to n times；If so, the compressor continues to remain shut off state；If it is not, then entering
S4'.S4 ', judges whether coil temperature corresponding to all indoor units is all satisfied Tcoil> T2, wherein T2For turn-on temperature；If
It is that power-on instruction then is sent to the compressor；If it is not, then the compressor continues to remain shut off state.
Optionally, the value range of the fiducial temperature is 8 DEG C~12 DEG C, and the value range of the shutdown temperature is -3 DEG C
~0 DEG C, the value range of the turn-on temperature is 3 DEG C~6 DEG C；The t1The value range of time is 20min~40min, institute
State t2The value range of time is 10s~15s, the t3The value range of time is 8min~12min, the t4Time takes
Value range is 3min~5min.
Optionally, when air-conditioning is switched on, after the temperature and pressure balance of refrigerant in the air-conditioning, execution judges the sky
The step of adjusting the entry condition for whether meeting coolant leakage amendment process.
Second aspect, the embodiment of the present invention also provide a kind of control device of air conditioner electronic expansion valve, the electronic expansion
The control device of valve includes: temperature sensor, is configured to obtain the corresponding coil temperature of each indoor unit to shut down in air-conditioning in real time
And indoor environment temperature.The judgement part being connected with the acquisition module, is configured to judge whether air-conditioning meets coolant leakage and repair
The entry condition of positive process.The entry condition of coolant leakage amendment process includes: in each indoor unit of shutdown, at least one
Indoor unit is in t1Always meet T in periodami-Tcoil>=δ T, and continue t1Time；Wherein, TamiIt is corresponding for the indoor unit
Indoor environment temperature, TcoilFor the coil temperature of the indoor unit, δ T is fiducial temperature.The processing being connected with the judgment module
Component is configured to when the judgment module determines that air-conditioning meets the entry condition of coolant leakage amendment process, will be described in satisfaction
The corresponding electric expansion valve of the indoor unit of entry condition controls the electric expansion valve to be regulated as electric expansion valve to be regulated
Process is corrected into the coolant leakage: adjusting the electric expansion valve valve opening δ E to be regulated1Step；t2After time, adjust it is described to
It adjusts electric expansion valve and closes valve δ E2Step；Wherein, δ E2> δ E1。
Beneficial effect achieved by the control device of air conditioner electronic expansion valve provided by the embodiment of the present invention, with first
The attainable beneficial effect of control method institute of air conditioner electronic expansion valve provided by aspect is identical, and this will not be repeated here.
The third aspect, the embodiment of the present invention also provide a kind of computer product, including one or more processors, the place
Reason device is configured as operation computer instruction, to execute the controlling party such as the described in any item air conditioner electronic expansion valves of first aspect
One or more steps in method.
Beneficial effect achieved by computer product provided by the embodiment of the present invention, with sky provided by first aspect
Adjust the attainable beneficial effect of control method institute of electric expansion valve identical, this will not be repeated here.
Fourth aspect, the embodiment of the present invention also provide a kind of air-conditioning, and the air-conditioning includes the air conditioner electric as described in second aspect
The control device of sub- expansion valve.
Beneficial effect achieved by air-conditioning provided by the embodiment of the present invention, with air conditioner electronic provided by first aspect
The attainable beneficial effect of control method institute of expansion valve is identical, and this will not be repeated here.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the schematic diagram of air conditioner circulating system in the embodiment of the present invention；
Fig. 2 is the flow chart of the control method of air conditioner electronic expansion valve in the embodiment of the present invention；
Fig. 3 is the schematic diagram of the control device of air conditioner electronic expansion valve in the embodiment of the present invention.
Appended drawing reference:
100- outdoor unit, 200- indoor unit,
1- compressor, 2- muffler,
3- four-way valve, 4- condenser,
5- filter, 6- outdoor environment temperature sensor,
7- suction temperature sensor, 8- exhaust gas temperature sensor,
9A, 9B, 9C, 9D, 9E- evaporator,
The thick valve of 10A, 10B, 10C, 10D, 10E-,
The thin valve of 11A, 11B, 11C, 11D, 11E-,
12A, 12B, 12C, 12D, 12E- tracheae temperature sensor,
13A, 13B, 13C, 13D, 13E- liquid pipe temperature sensor,
14A, 14B, 14C, 14D, 14E- indoor coil pipe sensor,
15A, 15B, 15C, 15D, 15E- indoor environment temperature sensor,
EEVA, EEVB, EEVC, EEVD, EEVE- electric expansion valve.
Specific embodiment
Below in conjunction with the attached drawing in the present patent application embodiment, the technical solution in the present patent application embodiment is carried out
Clearly and completely describing, it is clear that described embodiment is only the present patent application a part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the present patent application, those of ordinary skill in the art are without making creative work
Every other embodiment obtained belongs to the range of the present patent application protection.
One drags more or multi-gang air-conditioner, is the air-conditioning system that more indoor units are driven by an outdoor unit.The sky of the type
It adjusts the design parameter in each indoor unit different or under installation environment differs biggish situation, is easy to make the corresponding electricity of different indoor units
There is deviation in the aperture control of sub- expansion valve, leads to not the refrigeration need for meeting indoor unit according to the heat exchange amount that each indoor unit designs
It asks.
By taking one drags five air-conditionings as an example, as shown in Figure 1, one drags five air-conditionings to be an outdoor unit 100 while dragging five interiors
The air-conditioning of machine 200.Outdoor unit 100 generally includes compressor 1, muffler 2, four-way valve 3, condenser 4, filter 5, is used for
The electric expansion valve of throttling and oil eliminator not shown in the figure, condensation fan, outdoor controller etc..In indoor unit 200, often
Platform indoor unit 200 includes evaporator, motor, fan and indoor controller etc..Liquid refrigerant evaporation absorbs under refrigeration mode
Heat in air realizes refrigeration, passes through the ducting system heat convection of indoor unit 200.The evaporator of five indoor units 200 point
Not Wei 9A, 9B, 9C, 9D and 9E, each evaporator be correspondingly connected with one for throttling electric expansion valve, five electric expansion valves
It is followed successively by EEVA, EEVB, EEVC, EEVD and EEVE.
The outdoor unit 100 uses multitube system, and corresponding more set shut-off valves are connected by online pipe (liquid pipe and tracheae) and indoor unit
It connects, forms complete refrigerant circulation circuit.Every set shut-off valve separately includes thick valve and thin valve in the online pipe in every road.Each thick valve
Be set between the evaporator outlet and four-way valve of its corresponding indoor unit, wherein the corresponding thick valve of the online pipe in each road be 10A,
10B,10C,10D,10E；Each thin valve is set between its corresponding electric expansion valve and indoor machine evaporation entrance, wherein respectively
The corresponding thin valve of the online pipe in road is 11A, 11B, 11C, 11D, 11E.
It is additionally provided in the air-conditioning and is set to the outdoor environment temperature sensor 6 of outdoor unit 100, is set to compressor suction
Suction temperature sensor 7 near port, is respectively arranged at the exhaust gas temperature sensor 8 being set near exhaust outlet of compressor
Each tracheae temperature sensor 12A, 12B between four-way valve and each thick valve and at the thick valve, it 12C, 12D, 12E, is respectively set
Each liquid pipe temperature sensor 13A, 13B, 13C, 13D, 13E between each electric expansion valve and each thin valve, be respectively arranged at it is each
Indoor coil pipe sensor 14A, 14B, 14C, 14D, 14E in the middle part of indoor evaporator, and be respectively set at tunnel inlet
Indoor environment temperature sensor 15A, 15B, 15C, 15D, 15E.
When air-conditioning is in refrigeration or dehumidification mode operation, cold media gas is compressed into the refrigerant gas of high temperature and pressure through compressor 1
Body, after the discharge of the exhaust outlet of compressor 1, into four-way valve 3, refrigerant is in condenser 4 in the entrance condenser 4 of four-way valve 3
Carry out heat exchange with outdoor air, the cold media gas exothermic condensation of high temperature and pressure at medium temperature high pressure refrigerant liquid, if five
Indoor unit is switched on simultaneously, and refrigerant is then simultaneously by five electric expansion valve EEVA, EEVB, EEVC, EEVD, EEVE throttlings, throttling
The refrigerant liquid of low-temp low-pressure afterwards is respectively corresponded into five evaporators 9A, 9B, 9C, 9D, 9E, and refrigerant is in five evaporators
Heat exchange is carried out with the air in not chummery in 9A, 9B, 9C, 9D, 9E, the air by cooling is indoors under the action of blower
It is blown into interior, and then adjusts the temperature and humidity of five room environments, in the thermal evaporation of evaporator interior suction at gas, gas converges refrigerant
The General Logistics Department enters back into compressor 1, completes refrigeration cycle.If which indoor unit is not switched in five indoor units 200, in shutdown
State, then corresponding with the indoor unit 200 electric expansion valve is closed, refrigerant without the indoor unit evaporator.
When air-conditioning is in heating mode operation, cold media gas is compressed into the cold media gas of high temperature and pressure through compressor 1, through pressing
After the exhaust outlet discharge of contracting machine 1, machine is entered the room into four-way valve 3 is crossed, if five indoor units 200 are switched on simultaneously, high temperature and pressure
Cold media gas then simultaneously pass through five evaporators 9A, 9B, 9C, 9D, 9E, refrigerant is in five evaporators 9A, 9B, 9C, 9D, 9E
Carry out heat exchange with the air in five rooms respectively, air by heating is blown into interior under the action of blower indoors, adjusts
Save the environment temperature in five rooms, refrigerant in evaporator exothermic condensation at liquid, then respectively by valve 11A, 11B five thin,
11C, 11D, 11E are throttled by five electric expansion valves EEVA, EEVB, EEVC, EEVD, EEVE, the refrigerant of low-temp low-pressure after throttling
Liquid summarizes into condenser 4, carries out heat exchange with outdoor air in condenser 4, and heat absorption flashes to gas, is back to compression
Machine 1 completes heating circulation.It is opposite in shutdown indoor unit under heating mode if which indoor unit is not switched in five indoor units
Refrigerant will be caused to stockpile if the electric expansion valve answered completely closes, therefore the corresponding electric expansion valve of indoor unit that shuts down will retain
Certain aperture, so that it is guaranteed that refrigerant cannot be stockpiled excessively.
There is a situation where coolant leakages in case of at the corresponding electric expansion valve of indoor unit to have shut down for above-mentioned air-conditioning, hold
Refrigerant energy loss is easily led to, and influences the indoor unit refrigeration effect of booting, and be easy to cause refrigerant total amount in multiple interiors
Distribution is uneven in the evaporator of machine, and the refrigeration effect in turn resulting in each indoor unit is unbalanced.The embodiment of the present invention provides one kind
The control method of air conditioner electronic expansion valve is controlled by the aperture to electric expansion valve, to improve or correct electronic expansion
The case where the case where valve coolant leakage enables electric expansion valve to close tightly, prevents coolant leakage generation.
As shown in Fig. 2, the control method for the air conditioner electronic expansion valve that the embodiment of the present invention provides, comprising:
S1 obtains the coil temperature and indoor environment temperature of air conditioner indoor unit in the power-offstate.
S2, judges whether air-conditioning meets the entry condition of coolant leakage amendment process, and coolant leakage corrects the entrance of process
Condition includes: in each indoor unit of shutdown, at least one indoor unit is in t1Always meet T in periodami-Tcoil≥δT；Wherein,
TamiFor the corresponding indoor environment temperature of indoor unit, TcoilFor the coil temperature of indoor unit, δ T is fiducial temperature.
S3, if so, using the corresponding electric expansion valve of the indoor unit for meeting entry condition as electric expansion valve to be regulated,
It controls electric expansion valve to be regulated and enters coolant leakage amendment process: adjusting the electric expansion valve valve opening δ E to be regulated1Step；t2
After time, adjusts the electric expansion valve to be regulated and close valve δ E2Step；Wherein, δ E2> δ E1。
S4, if it is not, then continuing the judgement whether air-conditioning meets the entry condition of coolant leakage amendment process.
Under normal circumstances, air-conditioning is in refrigeration or dehumidification mode operation, the corresponding electric expansion valve of the indoor unit of shutdown
It is to close, after indoor unit shutdown, the refrigerant in coil pipe gradually evaporates, and the coil temperature that temperature sensor obtains is increasingly
Close to indoor environment temperature, after system is stablized, temperature that coil temperature and indoor environment temperature should be identical or between the two
Poor very little illustrates to there may be at corresponding electric expansion valve cold if coil temperature has big difference with indoor environment temperature
Matchmaker's leakage.
It, can be according to the actual condition of air-conditioning, to the corresponding indoor environment temperature of the indoor unit of each shutdown and disk based on this
The difference of tube temperature degree is preset.In some embodiments, the value range of fiducial temperature δ T can be 8 DEG C~12 DEG C, for example,
δ T can be 8 DEG C, 9 DEG C, 10 DEG C, 12 DEG C etc..
In addition, the refrigerant evaporation in coil pipe needs the regular hour, therefore, judges to close after due to indoor unit shutdown
During the difference of the corresponding indoor environment temperature of the indoor unit of machine and coil temperature, the difference needs to continue to exist certain
Time, to reduce the erroneous judgement to coolant leakage situation.In some embodiments, t1The value range of time can for 20min~
40min。t1If time setting is too short, the refrigerant accumulated in coil pipe not yet evaporates completely, and coil temperature is also relatively low, indoor ring
Border temperature and the difference of coil temperature are larger, be easy to cause erroneous judgement；t1If time setting is too long, refrigerant cannot be found in time
The problem of leakage, it is possible to cause the consequence of the serious frosting of indoor unit.
When the temperature difference of indoor environment temperature and coil temperature is greater than or equal to fiducial temperature, and continue t1Time, illustrate pair
There are coolant leakage at corresponding electric expansion valve at the electric expansion valve answered, need to take appropriate measures to correct refrigerant and let out
The case where leakage.
Electric expansion valve usually has initial actuating section, such as certain electric expansion valve needs 30 step ability of valve opening for the first time
It opens, therefore to electric expansion valve valve opening δ E to be regulated1When step number, valve opening step number cannot be too small, needs to be greater than electric expansion valve
Initial actuating section, on the one hand, guarantee that refrigerant can normally flow through, on the other hand, valve opening can make electronic expansion to be regulated
Valve events once, then can be by flowing through if stopping its closing since impurity is seized electric expansion valve to be regulated after valve opening
Refrigerant the foreign matter at electric expansion valve to be regulated is washed away.
The control method of air conditioner electronic expansion valve provided in an embodiment of the present invention utilizes the corresponding room of the indoor unit of each shutdown
The size of interior environment temperature and the difference of coil temperature judges whether occur at the corresponding electric expansion valve of indoor unit to have shut down
In the case where leaking, and leak at the corresponding electric expansion valve of the indoor unit to have shut down, make electric expansion valve to be regulated
Process is corrected into coolant leakage, is adjusted by the aperture to electric expansion valve to be regulated, makes electric expansion valve to be regulated
It completely closes, avoids generation secondary refrigerant leakage at electric expansion valve, reduce refrigerant energy loss, while also ensuring the room of booting
Interior machine can reach preferable refrigeration effect, increase the reliability of air-conditioning, improve the experience that user uses air-conditioning.
In some embodiments, δ E1Value range be electric expansion valve to be regulated total step number 8%~15%.Example
Such as, the total step number of electric expansion valve to be regulated is 500 steps, δ E1Can be for 40 steps, 50 steps, 60 steps, 70 steps or 75 steps etc., and example
Such as, the total step number of electric expansion valve to be regulated is 2000 steps, δ E1Can for 160 steps, 180 steps, 200 steps, 250 steps, 280 steps or
300 steps etc..
It, need to be to electronics to be regulated in order to guarantee have the refrigerant of sufficient flow to wash away the impurity at electric expansion valve to be regulated
After expansion valve progress valve opening after a period of time, then assign next instruction.In some embodiments, t2The value range of time is
10s~15s, such as t2It can be 10s, 12s or 15s.
The t after carrying out valve opening to electric expansion valve to be regulated2Time, then pass valve is carried out to electric expansion valve to be regulated.This
Inventive embodiments are by the way of the pass degree to one interference of electric expansion valve to be regulated, so that electric expansion valve to be regulated closes
Tightly.In some embodiments, δ E2Value range can for electric expansion valve to be regulated total step number 105~115%.Example
Such as, the total step number of electric expansion valve to be regulated is 500 steps, δ E2Can for 525 steps, 550 steps or 575 steps etc., in another example, wait adjust
The total step number for saving electric expansion valve is 2000 steps, δ E2It can be 2100 steps, 2200 steps or 2300 steps etc., so that electronics to be regulated
Expansion valve is fastened.
In some embodiments, during judging whether air-conditioning meets the entry condition of coolant leakage amendment process,
And electric expansion valve to be regulated enters after coolant leakage amendment process, the control method of air conditioner electronic expansion valve further include:
S1 ', real-time judge are respectively shut down in indoor unit, if coil temperature corresponding at least one indoor unit is in t3Time
Meet T always in sectioncoil< T1；Wherein, T1For shutdown temperature.
S2 ' if so, sending halt instruction to compressor, and is exported and is met Tcoil< T1Corresponding to the indoor unit of condition
Electric expansion valve reveals fault warning.
In some embodiments, shutdown temperature T1Value range can be -3 DEG C~0 DEG C.
When the indoor unit of shutdown meets Tcoil< T1When, illustrate secondary refrigerant leakage situation than more serious, in such case
Under, without waiting for t1Time judges whether air-conditioning meets the entry condition of coolant leakage amendment process, but can directly make sky
Compressor shutdown is adjusted, to prevent the too low indoor unit frosting of temperature, damage is generated to air-conditioning.Meanwhile it is serious for coolant leakage
Electric expansion valve can also issue leakage fault warning, externally to remind user.
In some embodiments, after the step of sending halt instruction to compressor, the controlling party of air conditioner electronic expansion valve
Method further include:
The time of S3 ', compressor shutdown are greater than or equal to t4In the case where time, judgement continuously sends compressor and shuts down
Whether the number of instruction is greater than or equal to n times；If so, compressor continues to remain shut off state；If it is not, then entering S4 '.
S4 ', judges whether coil temperature corresponding to all indoor units is all satisfied Tcoil> T2, wherein T2For booting temperature
Degree；If so, sending power-on instruction to compressor；If it is not, then compressor continues to remain shut off state.
That is, the frost that indoor unit is tied by refrigerant severe leakage gradually melts, coil pipe after compressor of air conditioner shutdown
Temperature gradually rises, until the coil temperature of each indoor unit is all satisfied Tcoil> T2, compressor can be restarted, air-conditioning is again
After booting, the refrigerant in air-conditioning reaches the state of temperature and pressure balance again.Judge air-conditioning with the presence or absence of electronics again at this time
At expansion valve the case where coolant leakage, if it is not, then the case where illustrating coolant leakage at electric expansion valve has been corrected, it is empty
Tune can continue to work normally；If it is, continuing to execute the measure of coolant leakage amendment process or close compressor.When continuous
The case where is greater than or equal to by n times, such as 3 times or 4 inferior, illustrates refrigerant serious leak for the number that compressor sends halt instruction
It always exists, by carrying out the operation of pass valve after valve opening in step S31 to electric expansion valve to be regulated, has been unable to reach expection
Effect does not continue to then be switched at this time.
In some embodiments, the value range of turn-on temperature is 3 DEG C~6 DEG C, such as can be 3 DEG C, 4 DEG C, 5 DEG C or 6
℃；t4The value range of time is 3min~5min, such as can be 3min, 4min or 5min.
In some embodiments, when air-conditioning is switched on, after the temperature and pressure balance of refrigerant in air-conditioning, it is empty to execute judgement
The step of adjusting the entry condition for whether meeting coolant leakage amendment process.
It is understood that when air-conditioning is just switched on, compressor just starts, in the indoor unit of booting, the temperature of refrigerant
It is also unstable with pressure；In addition, user is when the air conditioner is used, generally not multiple indoor units are all turned on simultaneously, can be gone out
During multiple indoor units operation now, and the case where open other indoor units, for having just enter into the indoor unit of refrigeration mode,
Stabilization is also not achieved in the temperature and pressure of its refrigerant.The temperature that above situation can be such that each temperature sensor detects is also unstable
It is fixed, in order to enhance the accuracy of judgement, it is greater than or equal to preset duration t in compressor start duration5Time, or the room of booting
Interior machine operation duration is all larger than or is equal to preset duration t5Time, (the corresponding electric expansion valve of the indoor unit of booting was non-initial opens
Degree) when, it is possible to determine that air-conditioning reaches the state of stable operation, and the temperature and pressure of refrigerant is also stable at this time.Wherein, when presetting
Long t5It can be arranged in advance.
In some embodiments, t5Value range can be 6min~12min.Illustratively, when the compressor of air-conditioning
After starting 10min, or the number of units of indoor unit of operation changes after 10min, it is believed that the temperature of refrigerant in air-conditioning
Degree and pressure have reached balance.
In several embodiments provided by the present invention, it should be understood that the side of each function of realization in each embodiment
Method process can integrate one independent part of formation together, be also possible to each method flow individualism, can also two
A or more than two method flows are integrated to form an independent part.
The embodiment of the present invention also provides the air conditioner electric for being able to carry out the control method embodiment of the above air conditioner electronic expansion valve
The control device of sub- expansion valve.Fig. 3 shows a kind of possible structural representation for the device that can implement above method embodiment
Figure.As shown in figure 3, in some embodiments of the invention, the control device of air conditioner electronic expansion valve includes the temperature being sequentially connected
Spend sensor, judgement part and processing component.
Wherein, temperature sensor is configured to the coil temperature obtained air conditioner indoor unit in the power-offstate and indoor environment temperature
Degree.For example, the temperature sensor can be indoor coil pipe sensor and indoor environment temperature sensor.
It is configured to judge the entrance whether air-conditioning meets coolant leakage amendment process with the judgement part that module is connected is obtained
Condition；The entry condition that coolant leakage corrects process includes: in each indoor unit of shutdown, at least one indoor unit is in t1Period
Inside meet T alwaysami-Tcoil>=δ T, and continue t1Time；Wherein, TamiFor the corresponding indoor environment temperature of indoor unit, TcoilFor
The coil temperature of indoor unit, δ T are fiducial temperature.
The processing component being connected with judgment module is configured to determine that air-conditioning meets coolant leakage amendment process in judgment module
Entry condition when, using the corresponding electric expansion valve of the indoor unit for meeting entry condition as electric expansion valve to be regulated, control
Electric expansion valve to be regulated enters coolant leakage amendment process: adjusting the electric expansion valve valve opening δ E to be regulated1Step；t2Time
Afterwards, it adjusts the electric expansion valve to be regulated and closes valve δ E2Step；Wherein, δ E2> δ E1。
The embodiment of the present invention can carry out function according to control device of the above method example to the air conditioner electronic expansion valve
The division of energy component, for example, each functional component of each function division (such as judgement part and processing component) can be corresponded to, it can also
With by two or more functional components in a processing module.Above-mentioned integrated component or module both can be using hard
The form of part is realized, can also be realized in the form of software function module.It should be noted that right in the embodiment of the present invention
The division of judgement part and processing component is schematical, only a kind of logical function partition, can be had in actual implementation another
Outer division mode.
Illustratively, the processing component can integrate on the outdoor controller of outdoor unit；Alternatively, judgement part and place
Reason component is integrated on the outdoor controller of outdoor unit；Alternatively, the judgement part is integrated on indoor controller, the place
Reason component is integrated on the outdoor controller of outdoor unit, indoor controller and outdoor controller communication connection.
In addition, all related contents for each step that above method embodiment is related to can quote corresponding function component
Function description, details are not described herein.
Beneficial effect achieved by the control device of air conditioner electronic expansion valve provided by the embodiment of the present invention, and it is above-mentioned
The attainable beneficial effect of control method institute of provided air conditioner electronic expansion valve is identical, and this will not be repeated here.
The embodiment of the present invention also provides a kind of computer product, including one or more processors, and processor is configured as
Computer instruction is run, to execute one or more steps in the control method such as the air conditioner electronic expansion valve of any of the above-described
Suddenly.Beneficial effect achieved by the computer product, and the control method of above-mentioned air conditioner electronic expansion valve institute is attainable has
Beneficial effect is identical, and this will not be repeated here.
In the above-described embodiments, all or part of can be come in fact by software, hardware, firmware or any combination thereof
It is existing.When being realized using software program, can entirely or partly occur in the form of a computer program product.The computer
Program product includes one or more computer instructions.When loading on computers and executing the computer program instructions, entirely
Portion is partly generated according to process or function described in the embodiment of the present invention.The computer can be general purpose computer, specially
With computer, computer network or other programmable devices.The computer instruction can store in computer-readable storage
In medium, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the meter
Calculation machine instruction can from a web-site, computer, server or data center by it is wired (such as coaxial cable, optical fiber,
Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, service
Device or data center's transmission.The computer readable storage medium can be any usable medium that computer can access or
It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be
Magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk
Solid State Disk (SSD)) etc..
The embodiment of the present invention also provides a kind of air-conditioning, and air-conditioning includes the control dress of air conditioner electronic expansion valve as described above
It sets.The type of the air-conditioning can there are many, the present invention is without limitation, for example, the air-conditioning can drag more air-conditionings for one,
It may be multi-gang air-conditioner；It can be convertible frequency air-conditioner, or constant speed air-conditioning.Those skilled in the art can according to need
The control method of the control device of air conditioner electronic expansion valve of the invention and air conditioner electronic expansion valve is used in air-conditioning.
Beneficial effect achieved by above-mentioned air-conditioning, and the control method of above-mentioned air conditioner electronic expansion valve institute is attainable has
Beneficial effect is identical, and this will not be repeated here.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (9)
1. a kind of control method of air conditioner electronic expansion valve characterized by comprising
Obtain the coil temperature and indoor environment temperature of air conditioner indoor unit in the power-offstate；
Judge whether air-conditioning meets the entry condition of coolant leakage amendment process, the entry condition of the coolant leakage amendment process
It include: in each indoor unit of shutdown, at least one indoor unit is in t1Always meet T in periodami-Tcoil≥δT；Wherein, Tami
For the corresponding indoor environment temperature of the indoor unit, TcoilFor the coil temperature of the indoor unit, δ T is fiducial temperature；
If so, using the corresponding electric expansion valve of the indoor unit for meeting the entry condition as electric expansion valve to be regulated, control
It makes the electric expansion valve to be regulated and corrects process into the coolant leakage: adjusting the electric expansion valve valve opening δ to be regulated
E1Step；t2After time, adjusts the electric expansion valve to be regulated and close valve δ E2Step；Wherein, δ E2> δ E1；
If it is not, then continuing the judgement whether air-conditioning meets the entry condition of coolant leakage amendment process.
2. the control method of air conditioner electronic expansion valve according to claim 1, which is characterized in that the δ E1Value range
It is the 8%~15% of the total step number of the electric expansion valve to be regulated, the δ E2Value range be the electronics to be regulated it is swollen
The 105~115% of the total step number of swollen valve.
3. the control method of air conditioner electronic expansion valve according to claim 1, which is characterized in that judging whether air-conditioning is full
During the entry condition of sufficient coolant leakage amendment process and the electric expansion valve to be regulated enters the coolant leakage
After amendment process, the control method of the air conditioner electronic expansion valve further include:
Real-time judge is respectively shut down in indoor unit, if coil temperature corresponding at least one indoor unit is in t3In period always
Meet Tcoil< T1；Wherein, T1For shutdown temperature；
If so, sending halt instruction to compressor, and exports and meet Tcoil< T1Electronic expansion corresponding to the indoor unit of condition
Valve reveals fault warning.
4. the control method of air conditioner electronic expansion valve according to claim 3, which is characterized in that described to be sent to compressor
After the step of halt instruction, the control method of the air conditioner electronic expansion valve further include:
The time of S3 ', compressor shutdown are greater than or equal to t4In the case where time, judgement continuously sends halt instruction to compressor
Number whether be greater than or equal to n times；If so, the compressor continues to remain shut off state；If it is not, then entering S4 '；
S4 ', judges whether coil temperature corresponding to all indoor units is all satisfied Tcoil> T2, wherein T2For turn-on temperature；If
It is that power-on instruction then is sent to the compressor；If it is not, then the compressor continues to remain shut off state.
5. the control method of air conditioner electronic expansion valve according to claim 4, which is characterized in that the fiducial temperature takes
Being worth range is 8 DEG C~12 DEG C, and the value range of the shutdown temperature is -3 DEG C~0 DEG C, and the value range of the turn-on temperature is 3
DEG C~6 DEG C；
The t1The value range of time is 20min~40min, the t2The value range of time is 10s~15s, the t3When
Between value range be 8min~12min, the t4The value range of time is 3min~5min.
6. the control method of air conditioner electronic expansion valve according to claim 1, which is characterized in that in air-conditioning booting, to
In the air-conditioning refrigerant temperature and pressure balance after, execute judge the air-conditioning whether meet coolant leakage correct process into
The step of entering condition.
7. a kind of control device of air conditioner electronic expansion valve, which is characterized in that the control device of the electric expansion valve includes:
Temperature sensor is configured to obtain the coil temperature and indoor environment temperature of air conditioner indoor unit in the power-offstate；
The judgement part being connected with the acquisition module is configured to judge the entrance whether air-conditioning meets coolant leakage amendment process
Condition；The entry condition of the coolant leakage amendment process includes: in each indoor unit of shutdown, at least one indoor unit is in t1When
Between meet T always in sectionami-Tcoil≥δT；Wherein, TamiFor the corresponding indoor environment temperature of the indoor unit, TcoilFor the room
The coil temperature of interior machine, δ T are fiducial temperature；
The processing component being connected with the judgment module is configured to determine that air-conditioning meets coolant leakage amendment in the judgment module
When the entry condition of process, using the corresponding electric expansion valve of the indoor unit for meeting the entry condition as electronic expansion to be regulated
Valve controls the electric expansion valve to be regulated and enters coolant leakage amendment process: adjusting the electric expansion valve to be regulated
Valve opening δ E1Step；t2After time, adjusts the electric expansion valve to be regulated and close valve δ E2Step；Wherein, δ E2> δ E1。
8. a kind of computer product, including one or more processors, which is characterized in that the processor is configured to operation meter
The instruction of calculation machine, one or more in control method to execute air conditioner electronic expansion valve as described in any one of claims 1 to 6
A step.
9. a kind of air-conditioning, which is characterized in that the air-conditioning includes the control dress of air conditioner electronic expansion valve as claimed in claim 7
It sets.
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| CN201910290478.5A CN110057025A (en) | 2019-04-11 | 2019-04-11 | Control method, device, computer product and the air-conditioning of air conditioner electronic expansion valve |
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| CN201910290478.5A CN110057025A (en) | 2019-04-11 | 2019-04-11 | Control method, device, computer product and the air-conditioning of air conditioner electronic expansion valve |
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| CN110486918A (en) * | 2019-08-27 | 2019-11-22 | 广东美的暖通设备有限公司 | Detection components, control method and air conditioner for air conditioner |
| CN110567095A (en) * | 2019-08-22 | 2019-12-13 | 宁波奥克斯电气股份有限公司 | Method for detecting and controlling abnormity of electronic expansion valve of multi-connected indoor unit |
| CN110594982A (en) * | 2019-09-19 | 2019-12-20 | 宁波奥克斯电气股份有限公司 | Air conditioner return air temperature detection, correction and control method |
| CN111397162A (en) * | 2020-03-30 | 2020-07-10 | 广东美的制冷设备有限公司 | Control method of air conditioner, multi-split air conditioner and storage medium |
| CN112303851A (en) * | 2020-10-29 | 2021-02-02 | 青岛海尔空调电子有限公司 | Control method for air conditioner and air conditioner using same |
| CN112361528A (en) * | 2020-11-09 | 2021-02-12 | 珠海格力电器股份有限公司 | Control method and control device of air conditioner, storage medium and processor |
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| CN113531783A (en) * | 2021-07-21 | 2021-10-22 | 四川虹美智能科技有限公司 | Refrigeration anti-freezing control method and device of multi-connected air conditioning system |
| CN114279043A (en) * | 2021-12-08 | 2022-04-05 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
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| CN113531783A (en) * | 2021-07-21 | 2021-10-22 | 四川虹美智能科技有限公司 | Refrigeration anti-freezing control method and device of multi-connected air conditioning system |
| CN113531783B (en) * | 2021-07-21 | 2022-06-28 | 四川虹美智能科技有限公司 | Refrigeration anti-freezing control method and device of multi-connected air conditioning system |
| CN114279043A (en) * | 2021-12-08 | 2022-04-05 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
| CN114279043B (en) * | 2021-12-08 | 2022-11-25 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
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