CN104913455A - Defrosting control method, defrosting control device and defrosting control terminal for air conditioner - Google Patents

Defrosting control method, defrosting control device and defrosting control terminal for air conditioner Download PDF

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Publication number
CN104913455A
CN104913455A CN201510307034.XA CN201510307034A CN104913455A CN 104913455 A CN104913455 A CN 104913455A CN 201510307034 A CN201510307034 A CN 201510307034A CN 104913455 A CN104913455 A CN 104913455A
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defrost
conditioner
compressor
air
time
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CN104913455B (en
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孙兴
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Midea Group Co Ltd
Midea Group Wuhan Refrigeration Equipment Co Ltd
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Midea Group Co Ltd
Midea Group Wuhan Refrigeration Equipment Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02Defrosting cycles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a defrosting control method for an air conditioner. The defrosting control method includes acquiring the running time of a compressor of the air conditioner, tube temperatures T2 of an evaporator and current room temperatures T1 when the air conditioner is in a heating running mode; judging whether defrosting starting conditions are met or not according to the running time of the compressor, the tube temperatures T2 of the evaporator and the current room temperatures T1; carrying out defrosting on the air conditioner according to preset modes when the defrosting starting conditions are met; determining defrosting parameters in defrosting procedures, completing defrosting when the defrosting parameters meet defrosting completion conditions and enabling the air conditioner to be in the heating running mode. The invention further discloses a defrosting control device and a defrosting control terminal for the air conditioner. The defrosting control method, the defrosting control device and the defrosting control terminal have the advantages that defrosting effects can be improved, and accordingly heating results can be improved.

Description

The defrosting control method of air-conditioner, device and terminal
Technical field
The present invention relates to air-conditioning technical field, particularly relate to the defrosting control method of air-conditioner, device and terminal.
Background technology
Along with the development of terminal technology, increasing terminal enters in the middle of daily life and work, such as, and air-conditioning etc.For movable heat pump air-conditioning, movable heat pump operation of air conditioner heats a period of time, after condenser temperature drops to frost point, condenser surface starts frosting, and air-conditioner band frost runs, and the frost that condenser is tied can not remove, more long-pending thicker, even icing, have a strong impact on heating effect.After heating shutdown, the frost on condenser melts, and a large amount of condensed water will overflow chassis, have a strong impact on user.Existing defrost process is easily not long for running time due to complete machine after the frequent defrost occurred when parameter formulates inaccurate and variable working condition, invalid defrost and defrost, causes defrost weak effect, and then makes heating effect poor.
Foregoing, only for auxiliary understanding technical scheme of the present invention, does not represent and admits that foregoing is prior art.
Summary of the invention
Main purpose of the present invention is to provide a kind of defrosting control method of air-conditioner, device and terminal, be intended to solve existing defrost process easily because complete machine after the frequent defrost occurred when parameter formulates inaccurate and variable working condition, invalid defrost and defrost is not long for running time, cause defrost weak effect, and then make the problem of heating effect difference.
For achieving the above object, the defrosting control method of a kind of air-conditioner that the embodiment of the present invention provides, comprising:
When air-conditioner is in heating operation mode, obtain the compressor operating time of described air-conditioner, evaporator tube temperature T2 and current room temperature T1;
The unlocking condition meeting defrost is judged whether according to described compressor operating time, described T2 and described T1;
After meeting the unlocking condition of defrost, according to predetermined manner, defrost is carried out to described air-conditioner;
Determine the defrost parameter of defrost process, when described defrost parameter meets defrost termination condition, terminate defrost, enter heating operation mode.
Preferably, describedly judge whether that the step of the unlocking condition meeting defrost comprises according to described compressor operating time, the gentle described current room temperature of described evaporator tube:
According to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, after described compressor continuous operating time reaches default running time, calculate the temperature difference △ T of described T2 and described T1;
Determine the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
When described △ T ', described T2 and described △ T all meet temperature conditions corresponding to defrost, judge the unlocking condition meeting defrost.
Preferably, describedly judge whether that the step of the unlocking condition meeting defrost comprises according to described compressor operating time, the gentle described current room temperature of described evaporator tube:
According to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, default running time is reached at described compressor continuous operating time, and described T2 and described T1 is when meeting corresponding temperature conditions respectively, calculate the temperature difference △ T of described T2 and described T1;
Determine the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
Interval Preset Time collection is described △ T ' once;
After the continuous number of times declined of described △ T ' reaches preset times, record the time t needed for described △ T ' decline preset temperature value;
When described t, described T2 and described △ T all meet temperature conditions corresponding to defrost, judge the unlocking condition meeting defrost.
Preferably, describedly judge whether that the step of the unlocking condition meeting defrost comprises according to described compressor operating time, the gentle described current room temperature of described evaporator tube:
After described compressor accumulated running time reaches default accumulated running time, judge whether described △ T ' and described t all meets corresponding temperature conditions;
When described △ T ' and described t all meets corresponding temperature conditions, judge the unlocking condition meeting defrost.
Preferably, describedly according to predetermined manner, the step that described air-conditioner carries out defrost to be comprised:
The corresponding defrost time is determined according to described compressor operating time;
According to predetermined manner, described air-conditioner is carried out to the defrost of described defrost time.
In addition, for achieving the above object, the embodiment of the present invention also provides a kind of defrosting control device of air-conditioner, comprising:
Acquisition module, for when air-conditioner is in heating operation mode, obtains the compressor operating time of described air-conditioner, evaporator tube temperature T2 and current room temperature T1;
Judge module, for judging whether according to described compressor operating time, described T2 and described T1 the unlocking condition meeting defrost;
Defrost module, for after meeting the unlocking condition of defrost, carries out defrost according to predetermined manner to described air-conditioner;
Control module, for determining the defrost parameter of defrost process, when described defrost parameter meeting defrost termination condition, terminating defrost, entering heating operation mode.
Preferably, described judge module comprises:
Computing unit, for according to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, after described compressor continuous operating time reaches default running time, calculates the temperature difference △ T of described T2 and described T1;
Amending unit, for determining the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
Judging unit, during for all meeting temperature conditions corresponding to defrost at described △ T ', described T2 and described △ T, judges the unlocking condition meeting defrost.
Preferably, described judge module also comprises collecting unit and record cell,
Described computing unit, also for according to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, default running time is reached at described compressor continuous operating time, and described T2 and described T1 is when meeting corresponding temperature conditions respectively, calculate the temperature difference △ T of described T2 and described T1;
Described amending unit, also for determining the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
Described collecting unit, for interval Preset Time collection once described △ T ';
Described record cell, after the number of times for declining continuously at described △ T ' reaches preset times, records the time t needed for described △ T ' decline preset temperature value;
Described judging unit, time also for all meeting temperature conditions corresponding to defrost at described t, described T2 and described △ T, judges the unlocking condition meeting defrost.
Preferably, described judging unit, also for after described compressor accumulated running time reaches default accumulated running time, judges whether described △ T ' and described t all meets corresponding temperature conditions; Also for when described △ T ' and described t all meets corresponding temperature conditions, judge the unlocking condition meeting defrost.
Preferably, described defrost module comprises;
Determining unit, for determining the corresponding defrost time according to described compressor operating time;
Defrost unit, for carrying out the defrost of described defrost time to described air-conditioner according to predetermined manner.
In addition, for achieving the above object, the embodiment of the present invention also provides a kind of terminal, comprises processor, and described processor is used for when air-conditioner is in heating operation mode, obtains the compressor operating time of described air-conditioner, evaporator tube temperature T2 and current room temperature T1; The unlocking condition meeting defrost is judged whether according to described compressor operating time, described T2 and described T1; After meeting the unlocking condition of defrost, according to predetermined manner, defrost is carried out to described air-conditioner; Determine the defrost parameter of defrost process, when described defrost parameter meets defrost termination condition, terminate defrost, enter heating operation mode.
The present invention carrys out comprehensive descision the need of entering defrosting operation by compressor operating time, evaporator tube temperature T2 and current room temperature T1, make defrost entry time more accurate, effectively avoid existing defrost process easily because after the frequent defrost occurred when parameter formulates inaccurate and variable working condition, invalid defrost and defrost, complete machine is not long for running time, cause defrost weak effect, and then make the problem of heating effect difference.Improve defrost effect, and then improve heating effect.
Accompanying drawing explanation
Fig. 1 is the configuration diagram of one embodiment of the invention air-conditioner;
Fig. 2 is the schematic flow sheet of the preferred embodiment of the defrosting control method of air-conditioner of the present invention;
Fig. 3 is the present invention judges whether to meet unlocking condition one embodiment of defrost schematic flow sheet according to described compressor operating time, described T2 and described T1;
Fig. 4 is the present invention judges whether to meet another embodiment of unlocking condition l of defrost schematic flow sheet according to described compressor operating time, described T2 and described T1;
Fig. 5 is the present invention judges whether to meet the another embodiment of unlocking condition of defrost schematic flow sheet according to described compressor operating time, described T2 and described T1;
Fig. 6 is the high-level schematic functional block diagram of the preferred embodiment of the defrosting control device of air-conditioner of the present invention;
Fig. 7 is the refinement high-level schematic functional block diagram of module one embodiment in Fig. 6;
Fig. 8 is the refinement high-level schematic functional block diagram of another embodiment of judge module in Fig. 6;
Fig. 9 is the refinement high-level schematic functional block diagram of another embodiment of defrost module in Fig. 6.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The primary solutions of the embodiment of the present invention is: when air-conditioner is in heating operation mode, obtains the compressor operating time of described air-conditioner, evaporator tube temperature T2 and current room temperature T1; The unlocking condition meeting defrost is judged whether according to described compressor operating time, described T2 and described T1; After meeting the unlocking condition of defrost, according to predetermined manner, defrost is carried out to described air-conditioner; Determine the defrost parameter of defrost process, when described defrost parameter meets defrost termination condition, terminate defrost, enter heating operation mode.Comprehensive descision is carried out the need of entering defrosting operation by compressor operating time, evaporator tube temperature T2 and current room temperature T1, make defrost entry time more accurate, effectively avoid existing defrost process easily because after the frequent defrost occurred when parameter formulates inaccurate and variable working condition, invalid defrost and defrost, complete machine is not long for running time, cause defrost weak effect, and then make the problem of heating effect difference.Improve defrost effect, and then improve heating effect.
Current existing defrost process is easily not long for running time due to complete machine after the frequent defrost occurred when parameter formulates inaccurate and variable working condition, invalid defrost and defrost, causes defrost weak effect, and then makes the problem of heating effect difference.
The invention provides a kind of air-conditioner, with reference to figure 1,1 is water pump, and 2 is water level switch, 3 is condenser, and 4 is chassis, and 5 is air draft spiral case, 6 is evaporimeter, and evaporimeter windward side structure is furnished with temperature-sensing probe A1, and the position weldering sleeve that middle part revealed by evaporimeter is furnished with temperature-sensing probe A2.
Based on the problems referred to above and air-conditioner, the invention provides a kind of defrosting control method of air-conditioner.
With reference to the schematic flow sheet that Fig. 2, Fig. 2 are the preferred embodiment of the defrosting control method of air-conditioner of the present invention.
In one embodiment, the defrosting control method of described air-conditioner comprises:
Step S10, when air-conditioner is in heating operation mode, obtains the compressor operating time of described air-conditioner, evaporator tube temperature T2 and current room temperature T1;
In the present embodiment, described T2 is evaporator tube temperature, T1 is evaporimeter return air temperature, i.e. room temperature, when air-conditioner is in heating operation mode, obtain the compressor operating time of described air-conditioner, described T2 and described T1, described compressor operating time comprises compressor continuous operating time and accumulated running time.
Step S20, judges whether according to described compressor operating time, described T2 and described T1 the unlocking condition meeting defrost;
After getting described compressor operating time, described T2 and described T1, judge whether according to described compressor operating time, described T2 and described T1 the unlocking condition meeting defrost.
Concrete, with reference to figure 3, describedly judge whether that the process of the unlocking condition meeting defrost can comprise according to described compressor operating time, described T2 and described T1:
Step S21, according to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, after described compressor continuous operating time reaches default running time, calculates the temperature difference △ T of described T2 and described T1;
Step S22, determines the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
Step S23, when described △ T ', described T2 and described △ T all meet temperature conditions corresponding to defrost, judges the unlocking condition meeting defrost.
In the present embodiment, in a heating mode, after compressor runs 8min minute continuously, start to sample and record △ T, then revising △ T according to windscreen, correction value is △ T '.Describedly according to windscreen, the rule that △ T revises to be comprised:
△ T ' during gentle breeze shelves=△ T,
△ T ' during low wind shelves=△ T,
△ T ' during apoplexy shelves=△ T+3,
△ T ' during high wind shelves=△ T+5.
When △ T ' decline is more than or equal to 6 DEG C, i.e. △ △ T '=△ T ' max-△ T ' >=6 DEG C, then described △ T ' meets the condition entering defrost.As long as this condition meets once, then think that this condition meets until as defrost always.△ T ' max is the maximum in △ T ', and △ T ' is the mean value in △ T ' or minimum, or according to the value different from maximum that user's set-up mode calculates.
The condition of △ T demand fulfillment table 1 or table 2.
Compressor accumulated running time is between 45-120min, and described T2 and T1 satisfies condition, and namely the temperature difference △ T of described T2 and T1 satisfies condition:
Wind shelves △T
Gao Feng <TH DEFROST
Apoplexy <TM DEFROST
Low wind <TL DEFROST
Table 1
Compressor accumulated running time is at more than 120min, and described T2 and described T1 satisfies condition:
Wind shelves △T
Gao Feng <TH DEFROST+2
Apoplexy <TM DEFROST+2
Low wind <TL DEFROST+2
Table 2
When described △ T ', described T2 and described △ T all meet temperature conditions corresponding to defrost, judge the unlocking condition meeting defrost.In the present embodiment, described default running time, in other embodiments of the present invention, also can also be 10min or 12min etc., the performance according to air-conditioner be arranged in order to run 8min continuously.It is meet △ T ' max-△ T ' >=6 degree that described △ T ' meets corresponding temperature conditions, and in other embodiments of the present invention, also all right △ T ' max-△ T ' >=8 DEG C or 10 DEG C etc., arranged according to household air-conditioner.
Described T2 meets temperature conditions corresponding to defrost, comprising:
The current T2 < 48 DEG C when inner blower wind speed is low wind;
The current T2 < 46 DEG C when inner blower wind speed is apoplexy;
The current T2 < 43 DEG C when inner blower wind speed is high wind.Described 48 DEG C, 46 DEG C and 43 DEG C is preferred settings, also can also be other values, arranges difference according to household air-conditioner difference.
Concrete, with reference to figure 4, describedly judge whether that the process of the unlocking condition meeting defrost can also comprise according to described compressor operating time, described T2 and described T1:
Step S24, according to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, default running time is reached at described compressor continuous operating time, and described T2 and described T1 is when meeting corresponding temperature conditions respectively, calculate the temperature difference △ T of described T2 and described T1;
Step S25, determines the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
Step S26, interval Preset Time collection is described △ T ' once;
Step S27, after the continuous number of times declined of described △ T ' reaches preset times, records the time t needed for described △ T ' decline preset temperature value;
Step S28, when described t, described T2 and described △ T all meet temperature conditions corresponding to defrost, judges the unlocking condition meeting defrost.
In the present embodiment, in a heating mode, after compressor runs 8 minutes continuously, when-5 DEG C of <T1<45 DEG C and-5 DEG C <T2<45 DEG C start to sample and record △ T, according to wind shelves, △ T is revised again, correction value is △ T ', record △ T ' often declines 0.8 degree of time t used (every 5 seconds, sampling should be carried out △ T ', to decline 0.8 degree of time t used for downward trend just starts timing temperature when sampling △ T ' for continuous 5 times), as 1min<t<FALL08CTM min, (FALL08CTM is: time parameter unit minute of E side, suggestion was with 20 minutes), then described t meets corresponding defrost condition.As long as this condition meets once, then think that this condition meets until enter defrosting always.In the present embodiment, described default running time is preferably 8min, described T2 and described T1 meets corresponding temperature conditions respectively and is preferably-5 DEG C <T1<45 DEG C and-5 DEG C of <T2<45 DEG C, described Preset Time is preferably 5s, and preset times is preferably 5 times.Also can need to arrange according to air-conditioner actual performance or user in other embodiments of the invention.The defrost condition that described T2 and described △ T need meet is as foregoing description, and this is no longer going to repeat them.
In the process whether calculating t satisfies condition, when occurring just sampling after wind speed change then waits 2min (also can also be 3min or 4min etc.) △ T ', when collecting △ T ' and rising: if the △ T ' that current △ T ' is greater than the starting point of current decline 0.8 degree is initial, then rejudge the downward trend (△ T ' often decline 0.8 degree of time t used reset) of △ T ', after this there is maximum (△ T ' is initial new) as △ T ' and start to decline, then with the initial new starting point for decline 0.8 degree of △ T ', restart timing, record △ T ' often declines 0.8 degree of time t used (every 5 seconds, sampling should be carried out △ T ', to decline 0.8 degree of time t used for downward trend just starts timing temperature when sampling △ T ' for continuous 5 times).If the △ T ' that current △ T ' is less than or equal to the starting point of current decline 0.8 degree is initial, then before, accumulation △ T ' the 0.8 degree of time t used that often declines remains valid.Under heating mode, after compressor runs 8 minutes continuously, when changing current wind speed with remote controller, actual wind speed must change in 3 seconds, and ran by wind speed setting, then described t satisfies condition.
Concrete, with reference to figure 5, describedly judge whether that the process of the unlocking condition meeting defrost can also comprise according to described compressor operating time, the described current room temperature of described evaporator tube gentleness:
Step S29, after described compressor accumulated running time reaches default accumulated running time, judges whether described △ T ' and described t all meets corresponding temperature conditions;
Step S31, when described △ T ' and described t all meets corresponding temperature conditions, judges the unlocking condition meeting defrost.
In the present embodiment, after compressor runs 8 minutes continuously, and after t adds up operation >=45min, if there is gentle breeze, described t satisfies condition, and described △ T ' meets △ △ T '=△ T ' max-△ T ' >=2 DEG C, then judge that described △ T ' satisfies condition, after described t and described △ T ' satisfies condition, judge to meet defrost condition.
In other embodiments of the present invention, defrost condition meet can also comprise: power on first, shut down after again start or translative mode, more than 45 minutes are reached when the time of running accumulative after compressor runs 8 minutes continuously, if air quantity is high, normal, basic wind and described T2 and described △ T meets corresponding temperature conditions, then judge to meet defrost condition; If windscreen is gentle breeze or blowing-out machine, then judge to meet defrost condition, if wind shelves change, just judge after 2 minutes be changed to meet defrost condition, and need the time of defrost to be set to 10 minutes.
Step S30, after meeting the unlocking condition of defrost, carries out defrost according to predetermined manner to described air-conditioner;
Concrete, reference table 3, determines the corresponding defrost time according to described compressor operating time, namely determines the defrost time according to compressor accumulated running time runtime, according to predetermined manner, described air-conditioner is carried out to the defrost of described defrost time.Predetermined manner comprises: compressor leaves, cross valve closes (refrigerating operaton), windward office, and leeward office, utilize the rapid defrost of heat that condenser under refrigerating state sends, and now fan must be closed, and prevents blowing cold air.
Compressor accumulated running time runtime (minute) The defrost time (minute)
Situation 1 Runtime=45 10
Situation 2 45<runtime≤60 7.5(DT1)
Situation 3 60<runtime≤90 8.5(DT1+1)
Situation 4 90<runtime≤120 10(DT1+2.5)
Situation 5 120<runtime 12(DT1+4.5)
Table 3
Step S40, determines the defrost parameter of defrost process, when described defrost parameter meets defrost termination condition, terminates defrost, enters heating operation mode.
Concrete, the condition exiting defrost comprises:
Exit one: compressor current meets or exceeds IDEFROST in continuous seven seconds, this current value stochastic pattern is different and different.
Exit two: the defrost time arrives.
Exit three: enter defrosting after 3 minutes, if T2 >=2 DEG C, terminate defrosting immediately.(every 5s detects a T2 value)
Exit four: enter defrosting after 2 minutes, start to detect T2 (every 5s detects a T2 value) value, and record T2 minimum T2min, if at (from recording to obtain timing T2min) in 4 minutes, occur that T2-T2min >=2 are DEG C (during T2≤-15 DEG C, think T2=-15 DEG C), then terminate defrosting.Otherwise, by exiting one, exit two or exit three and exit defrosting.
Meeting above-mentioned arbitrary exit criteria, namely exit defrost.In defrost process, if to break down, shut down or translative mode, exit defrost immediately.
In order to better describe defrosting control process of the present invention, above-mentioned defrost flow process comprises:
1, heating operation, when T2-T1 condition meets, running time, optimum 40 minutes of empirical tests, then entered defrost.
2, defrost action, compressor leaves, cross valve closes (refrigerating operaton), windward office, and leeward office, utilize the heat that condenser under refrigerating state sends, rapid defrost, and now fan must be closed, and anti-ly blows a cold wind over.
3, defrost process, is greater than 7 minutes when the time, then drive lower blower fan, by the steam of defrost generation outside exhaust duct discharge chamber, until defrost terminates.
4, defrost process, when chassis water level arrives water level switch 2, water pump 1 leaves, and through drainpipe toward extracardiac pumping, time of pumping 80 ~ 100s, the optimum 90s of empirical tests, makes water lev el control at water level switch less than 2, avoids condensed water to overflow chassis.
5, defrost process, the defrost time meets the requirements of the time, optimum 10 minutes, or current value reaches and exits current value, meets any one condition and enters defrost tenth skill.
6, defrost tenth skill, lower blower fan is opened, and compresses office simultaneously, 30 ~ 40 seconds, and after optimum 35 seconds, cross valve is opened, and opens, go up motor simultaneously and open after 3 seconds compressors.
7, after defrost tenth skill, ordinary hot heat pump heating state is recovered.
The present embodiment carrys out comprehensive descision the need of entering defrosting operation by compressor operating time, evaporator tube temperature T2 and current room temperature T1, make defrost entry time more accurate, effectively avoid existing defrost process easily because after the frequent defrost occurred when parameter formulates inaccurate and variable working condition, invalid defrost and defrost, complete machine is not long for running time, cause defrost weak effect, and then make the problem of heating effect difference.Improve defrost effect, and then improve heating effect.
The defrosting control method of corresponding above-mentioned air-conditioner, propose a kind of defrosting control device of air-conditioner, with reference to figure 6, the control device of described air-conditioner comprises: acquisition module 10, judge module 20, defrost module 30 and control module 40.
Described acquisition module 10, when air-conditioner is in heating operation mode, obtains the compressor operating time of described air-conditioner, evaporator tube temperature T2 and current room temperature T1;
In the present embodiment, described T2 is evaporator tube temperature, T1 is evaporimeter return air temperature, i.e. room temperature, when air-conditioner is in heating operation mode, obtain the compressor operating time of described air-conditioner, described T2 and described T 1, described compressor operating time comprises compressor continuous operating time and accumulated running time.
Described judge module 20, for judging whether according to described compressor operating time, described T2 and described T1 the unlocking condition meeting defrost;
After getting described compressor operating time, described T2 and described T1, judge whether according to described compressor operating time, described T2 and described T1 the unlocking condition meeting defrost.
Concrete, with reference to figure 7, described judge module 20 comprises: computing unit 21, amending unit 22 and judging unit 23,
Described computing unit 21, for according to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, after described compressor continuous operating time reaches default running time, calculate the temperature difference △ T of described T2 and described T1;
Described amending unit 22, for determining the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
Described judging unit 23, during for all meeting temperature conditions corresponding to defrost at described △ T ', described T2 and described △ T, judges the unlocking condition meeting defrost.
In the present embodiment, in a heating mode, after compressor runs 8min minute continuously, start to sample and record △ T, then revising △ T according to windscreen, correction value is △ T '.Describedly according to windscreen, the rule that △ T revises to be comprised:
△ T ' during gentle breeze shelves=△ T,
△ T ' during low wind shelves=△ T,
△ T ' during apoplexy shelves=△ T+3,
△ T ' during high wind shelves=△ T+5.
When △ T ' decline is more than or equal to 6 DEG C, i.e. △ △ T '=△ T ' max-△ T ' >=6 DEG C, then described △ T ' meets the condition entering defrost.As long as this condition meets once, then think that this condition meets until as defrost always.△ T ' max is the maximum in △ T ', and △ T ' is the mean value in △ T ' or minimum, or according to the value different from maximum that user's set-up mode calculates.
The condition of △ T demand fulfillment table 1 or table 2.
Compressor accumulated running time is between 45-120min, and described T2 and T1 satisfies condition, and namely the temperature difference △ T of described T2 and T1 satisfies condition:
Compressor accumulated running time is at more than 120min, and described T2 and described T1 satisfies condition:
When described △ T ', described T2 and described △ T all meet temperature conditions corresponding to defrost, judge the unlocking condition meeting defrost.In the present embodiment, described default running time, in other embodiments of the present invention, also can also be 10min or 12min etc., the performance according to air-conditioner be arranged in order to run 8min continuously.It is meet △ T ' max-△ T ' >=6 degree that described △ T ' meets corresponding temperature conditions, and in other embodiments of the present invention, also all right △ T ' max-△ T ' >=8 DEG C or 10 DEG C etc., arranged according to household air-conditioner.
Described T2 meets temperature conditions corresponding to defrost, comprising:
The current T2 < 48 DEG C when inner blower wind speed is low wind;
The current T2 < 46 DEG C when inner blower wind speed is apoplexy;
The current T2 < 43 DEG C when inner blower wind speed is high wind.Described 48 DEG C, 46 DEG C and 43 DEG C is preferred settings, also can also be other values, arranges difference according to household air-conditioner difference.
Concrete, with reference to figure 8, described judge module 20 also comprises: collecting unit 24 and record cell 25,
Described computing unit 21, also for according to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, default running time is reached at described compressor continuous operating time, and described T2 and described T1 is when meeting corresponding temperature conditions respectively, calculate the temperature difference △ T of described T2 and described T1;
Described amending unit 22, also for determining the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
Described collecting unit 24, for interval Preset Time collection once described △ T ';
Described record cell 25, after the number of times for declining continuously at described △ T ' reaches preset times, records the time t needed for described △ T ' decline preset temperature value;
Described judging unit 23, time also for all meeting temperature conditions corresponding to defrost at described t, described T2 and described △ T, judges the unlocking condition meeting defrost.
In the present embodiment, in a heating mode, after compressor runs 8 minutes continuously, when-5 DEG C of <T1<45 DEG C and-5 DEG C <T2<45 DEG C start to sample and record △ T, according to wind shelves, △ T is revised again, correction value is △ T ', record △ T ' often declines 0.8 degree of time t used (every 5 seconds, sampling should be carried out △ T ', to decline 0.8 degree of time t used for downward trend just starts timing temperature when sampling △ T ' for continuous 5 times), as 1min<t<FALL08CTM min, (FALL08CTM is: time parameter unit minute of E side, suggestion was with 20 minutes), then described t meets corresponding defrost condition.As long as this condition meets once, then think that this condition meets until enter defrosting always.In the present embodiment, described default running time is preferably 8min, described T2 and described T1 meets corresponding temperature conditions respectively and is preferably-5 DEG C <T1<45 DEG C and-5 DEG C of <T2<45 DEG C, described Preset Time is preferably 5s, and preset times is preferably 5 times.Also can need to arrange according to air-conditioner actual performance or user in other embodiments of the invention.The defrost condition that described T2 and described △ T need meet is as foregoing description, and this is no longer going to repeat them.
In the process whether calculating t satisfies condition, when occurring just sampling after wind speed change then waits 2min (also can also be 3min or 4min etc.) △ T ', when collecting △ T ' and rising: if the △ T ' that current △ T ' is greater than the starting point of current decline 0.8 degree is initial, then rejudge the downward trend (△ T ' often decline 0.8 degree of time t used reset) of △ T ', after this there is maximum (△ T ' is initial new) as △ T ' and start to decline, then with the initial new starting point for decline 0.8 degree of △ T ', restart timing, record △ T ' often declines 0.8 degree of time t used (every 5 seconds, sampling should be carried out △ T ', to decline 0.8 degree of time t used for downward trend just starts timing temperature when sampling △ T ' for continuous 5 times).If the △ T ' that current △ T ' is less than or equal to the starting point of current decline 0.8 degree is initial, then before, accumulation △ T ' the 0.8 degree of time t used that often declines remains valid.Under heating mode, after compressor runs 8 minutes continuously, when changing current wind speed with remote controller, actual wind speed must change in 3 seconds, and ran by wind speed setting, then described t satisfies condition.
Further, described judging unit 23, also for after described compressor accumulated running time reaches default accumulated running time, judges whether described △ T ' and described t all meets corresponding temperature conditions; Also for when described △ T ' and described t all meets corresponding temperature conditions, judge the unlocking condition meeting defrost.
In the present embodiment, after compressor runs 8 minutes continuously, and after t adds up operation >=45min, if there is gentle breeze, described t satisfies condition, and described △ T ' meets △ △ T '=△ T ' max-△ T ' >=2 DEG C, then judge that described △ T ' satisfies condition, after described t and described △ T ' satisfies condition, judge to meet defrost condition.
In other embodiments of the present invention, defrost condition meet can also comprise: power on first, shut down after again start or translative mode, more than 45 minutes are reached when the time of running accumulative after compressor runs 8 minutes continuously, if air quantity is high, normal, basic wind and described T2 and described △ T meets corresponding temperature conditions, then judge to meet defrost condition; If windscreen is gentle breeze or blowing-out machine, then judge to meet defrost condition, if wind shelves change, just judge after 2 minutes be changed to meet defrost condition, and need the time of defrost to be set to 10 minutes.
Described defrost module 30, for after meeting the unlocking condition of defrost, carries out defrost according to predetermined manner to described air-conditioner;
Concrete, with reference to figure 9, described defrost module 30 comprises determining unit 31, for determining the corresponding defrost time according to described compressor operating time, that is, reference table 3, determines the defrost time according to compressor accumulated running time runtime, defrost unit 32, for carrying out the defrost of described defrost time to described air-conditioner according to predetermined manner.Predetermined manner comprises: compressor leaves, cross valve closes (refrigerating operaton), windward office, and leeward office, utilize the rapid defrost of heat that condenser under refrigerating state sends, and now fan must be closed, and prevents blowing cold air.
Described control module 40, for determining the defrost parameter of defrost process, when described defrost parameter meeting defrost termination condition, terminating defrost, entering heating operation mode.
Concrete, the condition exiting defrost comprises:
Exit one: compressor current meets or exceeds IDEFROST in continuous seven seconds, this current value stochastic pattern is different and different.
Exit two: the defrost time arrives.
Exit three: enter defrosting after 3 minutes, if T2 >=2 DEG C, terminate defrosting immediately.(every 5s detects a T2 value)
Exit four: enter defrosting after 2 minutes, start to detect T2 (every 5s detects a T2 value) value, and record T2 minimum T2min, if at (from recording to obtain timing T2min) in 4 minutes, occur that T2-T2min >=2 are DEG C (during T2≤-15 DEG C, think T2=-15 DEG C), then terminate defrosting.Otherwise, by exiting one, exit two or exit three and exit defrosting.
Meeting above-mentioned arbitrary exit criteria, namely exit defrost.In defrost process, if to break down, shut down or translative mode, exit defrost immediately.
In order to better describe defrosting control process of the present invention, above-mentioned defrost flow process comprises:
1, heating operation, when T2-T1 condition meets, running time, optimum 40 minutes of empirical tests, then entered defrost.
2, defrost action, compressor leaves, cross valve closes (refrigerating operaton), windward office, and leeward office, utilize the heat that condenser under refrigerating state sends, rapid defrost, and now fan must be closed, and anti-ly blows a cold wind over.
3, defrost process, is greater than 7 minutes when the time, then drive lower blower fan, by the steam of defrost generation outside exhaust duct discharge chamber, until defrost terminates.
4, defrost process, when chassis water level arrives water level switch 2, water pump 1 leaves, and through drainpipe toward extracardiac pumping, time of pumping 80 ~ 100s, the optimum 90s of empirical tests, makes water lev el control at water level switch less than 2, avoids condensed water to overflow chassis.
5, defrost process, the defrost time meets the requirements of the time, optimum 10 minutes, or current value reaches and exits current value, meets any one condition and enters defrost tenth skill.
6, defrost tenth skill, lower blower fan is opened, and compresses office simultaneously, 30 ~ 40 seconds, and after optimum 35 seconds, cross valve is opened, and opens, go up motor simultaneously and open after 3 seconds compressors.
7, after defrost tenth skill, ordinary hot heat pump heating state is recovered.
The present embodiment carrys out comprehensive descision the need of entering defrosting operation by compressor operating time, evaporator tube temperature T2 and current room temperature T1, make defrost entry time more accurate, effectively avoid existing defrost process easily because after the frequent defrost occurred when parameter formulates inaccurate and variable working condition, invalid defrost and defrost, complete machine is not long for running time, cause defrost weak effect, and then make the problem of heating effect difference.Improve defrost effect, and then improve heating effect.
Accordingly, based on the defrosting control device of above-mentioned air-conditioner, the present invention also provides a kind of terminal, comprises processor, described processor is used for when air-conditioner is in heating operation mode, obtains the compressor operating time of described air-conditioner, evaporator tube temperature T2 and current room temperature T1; The unlocking condition meeting defrost is judged whether according to described compressor operating time, described T2 and described T1; After meeting the unlocking condition of defrost, according to predetermined manner, defrost is carried out to described air-conditioner; Determine the defrost parameter of defrost process, when described defrost parameter meets defrost termination condition, terminate defrost, enter heating operation mode.Described processor completes each function in above-described embodiment for the defrosting control device calling described air-conditioner.Described terminal includes but not limited to air-conditioner, the electronic equipments such as the mobile phone be connected with described air-conditioner, pad.In the present embodiment, described terminal is preferably air-conditioner.
The terminal that the present embodiment provides carrys out comprehensive descision the need of entering defrosting operation by compressor operating time, evaporator tube temperature T2 and current room temperature T1, make defrost entry time more accurate, effectively avoid existing defrost process easily because after the frequent defrost occurred when parameter formulates inaccurate and variable working condition, invalid defrost and defrost, complete machine is not long for running time, cause defrost weak effect, and then make the problem of heating effect difference.Improve defrost effect, and then improve heating effect.
The present invention also provides a kind of memory further, described memory is for storing the defrosting control program of described air-conditioner, described memory is connected with the processor of described terminal, and the processor of described terminal calls the defrosting control program execution following steps of the described air-conditioner that described memory stores:
When air-conditioner is in heating operation mode, obtain the compressor operating time of described air-conditioner, evaporator tube temperature T2 and current room temperature T1;
The unlocking condition meeting defrost is judged whether according to described compressor operating time, described T2 and described T1;
After meeting the unlocking condition of defrost, according to predetermined manner, defrost is carried out to described air-conditioner;
Determine the defrost parameter of defrost process, when described defrost parameter meets defrost termination condition, terminate defrost, enter heating operation mode.
Further, in one embodiment, the defrosting control program that processor calls the described air-conditioner stored in memory can perform following operation:
According to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, after described compressor continuous operating time reaches default running time, calculate the temperature difference △ T of described T2 and described T1;
Determine the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
When described △ T ', described T2 and described △ T all meet temperature conditions corresponding to defrost, judge the unlocking condition meeting defrost.
Further, in one embodiment, the defrosting control program that processor calls the described air-conditioner stored in memory can perform following operation:
According to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, default running time is reached at described compressor continuous operating time, and described T2 and described T1 is when meeting corresponding temperature conditions respectively, calculate the temperature difference △ T of described T2 and described T1;
Determine the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
Interval Preset Time collection is described △ T ' once;
After the continuous number of times declined of described △ T ' reaches preset times, record the time t needed for described △ T ' decline preset temperature value;
When described t, described T2 and described △ T all meet temperature conditions corresponding to defrost, judge the unlocking condition meeting defrost.
Further, in one embodiment, the defrosting control program that processor calls the described air-conditioner stored in memory can perform following operation:
After described compressor accumulated running time reaches default accumulated running time, judge whether described △ T ' and described t all meets corresponding temperature conditions;
When described △ T ' and described t all meets corresponding temperature conditions, judge the unlocking condition meeting defrost.
Further, in one embodiment, the defrosting control program that processor calls the described air-conditioner stored in memory can perform following operation:
The corresponding defrost time is determined according to described compressor operating time;
According to predetermined manner, described air-conditioner is carried out to the defrost of described defrost time.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprising some instructions in order to make a station terminal equipment (can be mobile phone, computer, server, air-conditioner, or the network equipment etc.) perform method described in each embodiment of the present invention.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (11)

1. a defrosting control method for air-conditioner, is characterized in that, comprising:
When air-conditioner is in heating operation mode, obtain the compressor operating time of described air-conditioner, evaporator tube temperature T2 and current room temperature T1;
The unlocking condition meeting defrost is judged whether according to described compressor operating time, described T2 and described T1;
After meeting the unlocking condition of defrost, according to predetermined manner, defrost is carried out to described air-conditioner;
Determine the defrost parameter of defrost process, when described defrost parameter meets defrost termination condition, terminate defrost, enter heating operation mode.
2. the defrosting control method of air-conditioner as claimed in claim 1, is characterized in that, describedly judges whether that the step of the unlocking condition meeting defrost comprises according to described compressor operating time, the gentle described current room temperature of described evaporator tube:
According to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, after described compressor continuous operating time reaches default running time, calculate the temperature difference △ T of described T2 and described T1;
Determine the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
When described △ T ', described T2 and described △ T all meet temperature conditions corresponding to defrost, judge the unlocking condition meeting defrost.
3. the defrosting control method of air-conditioner as claimed in claim 1, is characterized in that, describedly judges whether that the step of the unlocking condition meeting defrost comprises according to described compressor operating time, the gentle described current room temperature of described evaporator tube:
According to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, default running time is reached at described compressor continuous operating time, and described T2 and described T1 is when meeting corresponding temperature conditions respectively, calculate the temperature difference △ T of described T2 and described T1;
Determine the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
Interval Preset Time collection is described △ T ' once;
After the continuous number of times declined of described △ T ' reaches preset times, record the time t needed for described △ T ' decline preset temperature value;
When described t, described T2 and described △ T all meet temperature conditions corresponding to defrost, judge the unlocking condition meeting defrost.
4. the defrosting control method of air-conditioner as claimed in claim 3, is characterized in that, describedly judges whether that the step of the unlocking condition meeting defrost comprises according to described compressor operating time, the gentle described current room temperature of described evaporator tube:
After described compressor accumulated running time reaches default accumulated running time, judge whether described △ T ' and described t all meets corresponding temperature conditions;
When described △ T ' and described t all meets corresponding temperature conditions, judge the unlocking condition meeting defrost.
5. the defrosting control method of the air-conditioner as described in any one of Claims 1-4, is characterized in that, describedly comprises the step that described air-conditioner carries out defrost according to predetermined manner:
The corresponding defrost time is determined according to described compressor operating time;
According to predetermined manner, described air-conditioner is carried out to the defrost of described defrost time.
6. a defrosting control device for air-conditioner, is characterized in that, comprising:
Acquisition module, for when air-conditioner is in heating operation mode, obtains the compressor operating time of described air-conditioner, evaporator tube temperature T2 and current room temperature T1;
Judge module, for judging whether according to described compressor operating time, described T2 and described T1 the unlocking condition meeting defrost;
Defrost module, for after meeting the unlocking condition of defrost, carries out defrost according to predetermined manner to described air-conditioner;
Control module, for determining the defrost parameter of defrost process, when described defrost parameter meeting defrost termination condition, terminating defrost, entering heating operation mode.
7. the defrosting control device of air-conditioner as claimed in claim 6, it is characterized in that, described judge module comprises:
Computing unit, for according to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, after described compressor continuous operating time reaches default running time, calculates the temperature difference △ T of described T2 and described T1;
Amending unit, for determining the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
Judging unit, during for all meeting temperature conditions corresponding to defrost at described △ T ', described T2 and described △ T, judges the unlocking condition meeting defrost.
8. the defrosting control device of air-conditioner as claimed in claim 7, it is characterized in that, described judge module also comprises collecting unit and record cell,
Described computing unit, also for according to described compressor operating time determination compressor accumulated running time and compressor continuous operating time, default running time is reached at described compressor continuous operating time, and described T2 and described T1 is when meeting corresponding temperature conditions respectively, calculate the temperature difference △ T of described T2 and described T1;
Described amending unit, also for determining the correction value of described △ T according to described compressor accumulated running time, according to described correction value correction, △ T obtains revised temperature difference △ T ';
Described collecting unit, for interval Preset Time collection once described △ T ';
Described record cell, after the number of times for declining continuously at described △ T ' reaches preset times, records the time t needed for described △ T ' decline preset temperature value;
Described judging unit, time also for all meeting temperature conditions corresponding to defrost at described t, described T2 and described △ T, judges the unlocking condition meeting defrost.
9. the defrosting control device of air-conditioner as claimed in claim 7, it is characterized in that, described judging unit, also for after described compressor accumulated running time reaches default accumulated running time, judges whether described △ T ' and described t all meets corresponding temperature conditions; Also for when described △ T ' and described t all meets corresponding temperature conditions, judge the unlocking condition meeting defrost.
10. the defrosting control device of the air-conditioner as described in any one of claim 6 to 9, is characterized in that, described defrost module comprises;
Determining unit, for determining the corresponding defrost time according to described compressor operating time;
Defrost unit, for carrying out the defrost of described defrost time to described air-conditioner according to predetermined manner.
11. 1 kinds of terminals, is characterized in that, comprise processor, and described processor is used for when air-conditioner is in heating operation mode, obtains the compressor operating time of described air-conditioner, evaporator tube temperature T2 and current room temperature T1; The unlocking condition meeting defrost is judged whether according to described compressor operating time, described T2 and described T1; After meeting the unlocking condition of defrost, according to predetermined manner, defrost is carried out to described air-conditioner; Determine the defrost parameter of defrost process, when described defrost parameter meets defrost termination condition, terminate defrost, enter heating operation mode.
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CN110631188B (en) * 2018-06-25 2021-07-30 重庆海尔空调器有限公司 Defrosting control method and device for air conditioner
CN110631192B (en) * 2018-06-25 2021-09-21 青岛海尔空调器有限总公司 Defrosting control method and device for air conditioner
CN109855236A (en) * 2019-02-01 2019-06-07 青岛海尔空调器有限总公司 The defrosting control method and computer storage medium of air-conditioner with fixed frequency
CN111895596A (en) * 2019-05-06 2020-11-06 青岛海尔空调器有限总公司 Control method and device for defrosting of air conditioner and air conditioner
CN111637592A (en) * 2020-04-24 2020-09-08 广东志高暖通设备股份有限公司 Chassis deicing control method and device, storage medium and air conditioner
CN111637592B (en) * 2020-04-24 2021-10-22 广东志高暖通设备股份有限公司 Chassis deicing control method and device, storage medium and air conditioner
CN112178992A (en) * 2020-09-15 2021-01-05 珠海格力电器股份有限公司 Defrosting control method and device and heating unit
CN112178992B (en) * 2020-09-15 2021-09-21 珠海格力电器股份有限公司 Defrosting control method and device and heating unit
CN115682305A (en) * 2022-10-14 2023-02-03 珠海格力电器股份有限公司 Method and device for controlling refrigeration operation of air conditioner
CN115682305B (en) * 2022-10-14 2024-05-10 珠海格力电器股份有限公司 Method and device for controlling refrigeration operation of air conditioner

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