CN110469997A - For the control method of air-conditioner defrosting, device and air-conditioning - Google Patents
For the control method of air-conditioner defrosting, device and air-conditioning Download PDFInfo
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- CN110469997A CN110469997A CN201910686075.2A CN201910686075A CN110469997A CN 110469997 A CN110469997 A CN 110469997A CN 201910686075 A CN201910686075 A CN 201910686075A CN 110469997 A CN110469997 A CN 110469997A
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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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/31—Low ambient temperatures
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
This application involves air-conditioner defrosting technical fields, disclose a kind of control method for air-conditioner defrosting.Control method includes: the upper casing temperature of outdoor leaving air temp and outdoor heat exchanger that outdoor unit is obtained in the operation of air conditioner heating mode processes；After determining satisfaction defrosting entry condition according to the outdoor leaving air temp and the upper casing temperature, controls and frequency redution operation is carried out to the compressor of the air-conditioning.Whether the control method can meet the judgement of defrosting entry condition according to the outdoor leaving air temp of outdoor unit and the upper casing temperature of outdoor heat exchanger to air-conditioning, improve the control precision to control air-conditioner defrosting；And the heat exchange amount of outdoor heat exchanger and outdoor environment is reduced by the frequency redution operation to compressor, improve the frosting situation of outdoor heat exchanger, to reduce frost condensation to the adverse effect of air-conditioning itself heating performance.A kind of control device and air-conditioning for air-conditioner defrosting is also disclosed in the application.
Description
Technical field
This application involves air-conditioner defrosting technical fields, for example, be related to it is a kind of for the control method of air-conditioner defrosting, device and
Air-conditioning.
Background technique
Currently, the mainstream model of air-conditioning is mostly the heat exchange function for having refrigeration refrigeration double mode, here, air-conditioning is cryogenically
Under area or the biggish weather conditions of wind and snow, user is usually to adjust air-conditioning to heating mode, indoor to be promoted using air-conditioning
The temperature of environment；In air conditioner in operation heating operations, the outdoor heat exchanger of outdoor unit is to play to absorb from outdoor environment
The effect of the evaporator of heat is influenced by the temperature and humidity of outdoor environment, and the more ice of condensation is easy on outdoor heat exchanger
Frost, and meeting is so that the heating capacity of air-conditioning can be lower and lower, therefore imitates to guarantee to heat after simultaneously frost knot arrives certain thickness
Fruit avoids frost condensation excessive, it is therefore necessary to defrost to outdoor heat exchanger.
Here, the mode to defrost to outdoor heat exchanger is mainly include the following types: first is that reverse cycle defrosting, air-conditioning carry out
When reverse cycle defrosting, the high temperature refrigerant of compressor discharge first flows through outdoor heat exchanger, to melt frost using refrigerant heat；Second is that
Increase electric heater unit on the refrigerant pipeline of air-conditioning, the refrigerant for flowing into outdoor heat exchanger is heated using electric heater unit, in turn
Melt the frost condensed on outdoor heat exchanger using refrigerant heat；Third is that adjusting the air supply rates such as compressor, electric expansion valve
Operating parameter, to change the temperature and pressure state of refrigerant in refrigerant pipeline, making it also can be played to outdoor heat exchanger defrosting
Effect.
During realizing the embodiment of the present disclosure, at least there are the following problems in the related technology for discovery:
More or less all can in the process as shown in above-described embodiment to the defrosting of the Defrost mode of outdoor heat exchanger
Constituting on the normal heating performance of air-conditioning influences, therefore air-conditioning will do it defrosting judgement before defrosting, and then be tied according to judgement
Whether fruit control air-conditioning defrosts；In the related technology generally by numeric ratio between outdoor environment temperature and frost point temperature
Compared with mode carry out defrosting judgement, due to outdoor heat exchanger frosting device can simultaneously by outdoor environment and self-operating state
The influence of equal many factors, therefore above-mentioned defrosting judgment mode is excessively rough, it is difficult to meet air-conditioning to accurate triggering defrosting movement
Needs.
Summary of the invention
In order to which some aspects of the embodiment to disclosure have basic understanding, simple summary is shown below.It is described general
Including is not extensive overview, nor to determine key/critical component or describe the protection scope of these embodiments, but is made
For the preamble of following detailed description.
The embodiment of the present disclosure provide it is a kind of for the control method of air-conditioner defrosting, device and air-conditioning, to solve related skill
Air-conditioner defrosting judges the lower technical problem of accuracy in art.
In some embodiments, the control method for air-conditioner defrosting includes:
In the operation of air conditioner heating mode processes, the outdoor leaving air temp and outdoor heat exchanger of outdoor unit are obtained
Upper casing temperature；
After determining satisfaction defrosting entry condition according to the outdoor leaving air temp and the upper casing temperature, control to institute
The compressor for stating air-conditioning carries out frequency redution operation.
In some embodiments, the control device for air-conditioner defrosting includes:
Processor and the memory for being stored with program instruction, processor are configured as holding when executing described program instruction
Row such as above-mentioned some control methods as described in the examples for air-conditioner defrosting.
In some embodiments, the air-conditioning, comprising:
Refrigerant circulation circuit is connected by outdoor heat exchanger, indoor heat exchanger, throttling set and compressor by refrigerant pipeline
It constitutes；
Such as above-mentioned some control devices as described in the examples for air-conditioner defrosting, with the compression mechatronics.
The embodiment of the present disclosure provide for the control method of air-conditioner defrosting, device and air-conditioning, following technology may be implemented
Effect:
The control method for air-conditioner defrosting that the embodiment of the present disclosure provides can be according to the room of the outdoor unit acquired
Whether outer leaving air temp and the upper casing temperature of outdoor heat exchanger these parametric synthesis meet defrosting entry condition to air-conditioning
Judgement, so as to effectively improve to control air-conditioner defrosting control precision；And it is reduced by the frequency redution operation to compressor
The heat exchange amount of outdoor heat exchanger and outdoor environment, and then reduce because of the outdoor heat exchanger hull-skin temperature mistake caused by largely absorbing heat
The adverse effect of low temperature factor, so as to improve the frosting situation of outdoor heat exchanger, to reduce frost condensation to air-conditioning itself
The adverse effect of heating performance.
Above general description and it is discussed below be only it is exemplary and explanatory, be not used in limitation the application.
Detailed description of the invention
One or more embodiments are illustrated by corresponding attached drawing, these exemplary illustrations and attached drawing
The restriction to embodiment is not constituted, the element with same reference numbers label is shown as similar element in attached drawing, and attached drawing is not
Composition limitation, and wherein:
Fig. 1 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides；
Fig. 2 is the flow diagram for the control method for air-conditioner defrosting that the another embodiment of the disclosure provides；
Fig. 3 is the structural schematic diagram for the control device for air-conditioner defrosting that the embodiment of the present disclosure provides.
Specific embodiment
The characteristics of in order to more fully hereinafter understand the embodiment of the present disclosure and technology contents, with reference to the accompanying drawing to this public affairs
The realization for opening embodiment is described in detail, appended attached drawing purposes of discussion only for reference, is not used to limit the embodiment of the present disclosure.
In technical description below, for convenience of explanation for the sake of, disclosed embodiment is fully understood with providing by multiple details.
However, one or more embodiments still can be implemented in the case where without these details.It in other cases, is simplification
Attached drawing, well known construction and device can simplify displaying.
Fig. 1 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides.
As shown in Figure 1, providing a kind of control method for air-conditioner defrosting in the embodiment of the present disclosure, can be used for solving sky
Outdoor heat exchanger when running under sleet or low temperature severe cold condition is adjusted frosting occur, influence the problem of air-conditioning normal heating performance；
In embodiment, the main process flow steps of the control method include:
S101, in operation of air conditioner heating mode processes, obtain the outdoor leaving air temp and outdoor heat exchanger of outdoor unit
Upper casing temperature；
In embodiment, when frosting problem occurs in the outdoor heat exchanger of air-conditioner outdoor unit, outdoor environment is mostly in temperature
Lower, the biggish bad working environments of humidity, user is usually that air-conditioning is set as heating mode operation at this time, to utilize air-conditioning to room
Interior environment carries out heating heating.Therefore the control method for air-conditioner defrosting that the embodiment of the present disclosure provides is in air-conditioning to heat
The control flow enabled when mode operation.
When air-conditioning is with other such as refrigeration modes, the operation of dehumidification mode isotype, the room as corresponding to these modes
The problem of outer operating condition is generally not in air-conditioner outdoor unit frosting, thus it is optional, it is run in air-conditioning with other non-heating modes
When, the corresponding flow control process of the control method does not enable, and misses to avoid air-conditioning in operation refrigeration mode, dehumidification mode isotype
Triggering is acted for the defrosting of outdoor heat exchanger, is influenced air-conditioning and is normally freezed or dehumidification work process.
In an alternative embodiment, the outdoor unit of air-conditioning is provided with one first temperature sensor, which passes
Sensor can be used for detecting the leaving air temp of the real-time outlet air air-flow of outdoor unit；Therefore, acquired outdoor goes out in step s101
Air temperature can be the real time temperature by outdoor unit outlet air air-flow detected by first temperature sensor；
Optionally, the first temperature sensor is set on the air outlet grate of outdoor unit, to be at outdoor heat exchanger
On the outlet air path of outlet air air-flow, to improve the detection accuracy to outdoor leaving air temp.
In the embodiments of the present disclosure, outdoor leaving air temp be able to reflect out to a certain extent outdoor environment and outdoor unit into
The temperature variations in outdoor environment are discharged into after row heat exchange, and then are able to reflect out heat exchange amount or heat exchange effect between the two
Rate；For example, in the case where the housing outer surface for thering is frost to be condensed in outdoor heat exchanger, outdoor heat exchanger and outdoor outdoor environment
Between heat exchange amount reduce, heat exchange efficiency reduce, flow through outdoor heat exchanger air absorbed heat reduce, therefore compared to
The case where outdoor heat exchanger non-condensing frost, the temperature of outlet air air-flow wants more slightly higher；Therefore the outdoor leaving air temp got
Situation of change can be used as measure outdoor heat exchanger frosting degree reference factor.
In an alternative embodiment, the outdoor unit of air-conditioning is additionally provided with a second temperature sensor, the second temperature
Sensor can be used for detecting the real time temperature of the upper body or the refrigerant pipeline in top that flow through outdoor heat exchanger；Cause
This, acquired upper casing temperature can be the real-time temperature detected by the second temperature sensor in step s101
Degree；
In the present embodiment, the refrigerant inlet pipe of outdoor heat exchanger is set to lower part, and refrigerant goes out liquid and is set to top, because
Refrigerant flows into outdoor heat exchanger from below in a heating mode for this, and flows out outdoor heat exchanger from top；Therefore upper casing temperature
It is to be influenced by the most of pipeline for having flowed through outdoor heat exchanger and with the temperature of the refrigerant after outdoor environment heat exchange, it can
Reflect the heat exchanger effectiveness of the refrigerant under different frosting situations；Under the situation of the non-frosting of air-conditioning, refrigerant is from outdoor environment
The temperature for the upper body absorbed heat more, therefore be affected by it is also higher；And in air-conditioning there are in the case where frosting, refrigerant is from room
It absorbs heat in external environment less, therefore upper casing temperature is relatively low.In this way, the upper casing temperature of outdoor heat exchanger is changed compared to outdoor
The outdoor coil temperature of hot device lower part more can accurately reflect the frosting degree of outdoor heat exchanger.
S102, after being determined according to outdoor leaving air temp and upper casing temperature and meeting defrosting entry condition, control to air-conditioning
Compressor carry out frequency redution operation.
Here, air-conditioning presets a defrosting entry condition, can be according to acquiring when air-conditioning is run with heating mode
Parameter judge whether air-conditioning meets the defrosting entry condition；If it is satisfied, then air-conditioning need to outdoor heat exchanger into
Row defrosting；If conditions are not met, then air-conditioning is without defrosting to outdoor heat exchanger.
In the embodiments of the present disclosure, air-conditioning be according to the outdoor leaving air temp of outdoor unit acquired in step S101 and
The parameters such as the upper casing temperature of outdoor heat exchanger to whether meet defrosting entry condition judge；In this way, the embodiment of the present disclosure
It combines above-mentioned factor parameter jointly to judge air-conditioning with the presence or absence of frosting problem, can be greatly improved to air-conditioner defrosting
Precision is judged, so that the defrosting operation of air-conditioning triggering can be more in line with the real-time frosting situation of air-conditioning.
In an alternative embodiment, the defrosting entry condition in step S102 includes:
Tmax-TOutlet air≤ △ T1, TUpper housing max-TUpper housing≥△T2；
Wherein, TmaxFor the outdoor leaving air temp maximum value recorded after this booting operation of air-conditioning, TOutlet airGo out wind-warm syndrome for outdoor
Degree, TUpper housing maxUpper housing temperature maximum for the outdoor heat exchanger recorded after this booting operation of air-conditioning, TUpper housingIt is changed for outdoor
The upper casing temperature of hot device, △ T1 are preset first temperature difference threshold, and △ T2 is preset second temperature difference threshold.
In the defrosting entry condition, the height of the temperature gap between outdoor leaving air temp maximum value and outdoor leaving air temp
It is able to reflect out heat exchanger effectiveness of the outdoor environment from outdoor heat exchanger under different frosting situations；Such as in the non-frosting of air-conditioning
In the case of, outdoor leaving air temp is slightly lower, therefore the difference between outdoor leaving air temp maximum value and outdoor leaving air temp is larger；And
In air-conditioning there are in the case where frosting, outdoor leaving air temp is slightly higher, therefore outdoor leaving air temp maximum value and outdoor leaving air temp
Between difference it is small.In this way, one of the defrosting entry condition of the application is according to leaving air temp outdoor under operating condition outside different chamber
Temperature change carry out defrosting judgement.
In addition, the upper housing temperature maximum and outdoor heat exchanger of the outdoor heat exchanger recorded after this booting operation of air-conditioning
Upper casing temperature be also the heat absorption efficiency for being able to reflect out the refrigerant under different frosting situations in outdoor heat exchanger, thus and
It can be as the parameter for judging air-conditioning frosting degree.
Therefore, the defrosting entry condition in the embodiment of the present disclosure has comprehensively considered parameter under different working conditions and has changed outdoor
The appearance for the problems such as frosting of hot device influences, and can effectively improve the judgement precision to air-conditioner defrosting, reduces erroneous judgement, false triggering.
In the embodiments of the present disclosure, when according to outdoor leaving air temp and the determining satisfaction defrosting entry condition of upper casing temperature
Afterwards, the defrosting operation of air-conditioning includes that control carries out frequency redution operation to the compressor of air-conditioning.
In embodiment, by reducing the running frequency of the compressor of air-conditioning, it can reduce refrigerant in outdoor heat exchanger
Heat absorption rate, and then can weaken because refrigerant heat absorption caused by outdoor heat exchanger temperature further decrease, frosting degree adds
The adverse effect of weight is removed in execution to what the refrigerant of refrigerant inlet pipe and refrigerant outlet tube road was heated to improve air-conditioning
The defrosting effect of frost operation.
Here, it after air-conditioning exits defrosting, can control the running frequency for restoring compressor of air conditioner, exit defrosting to meet
Air-conditioning normally heats the frequency requirement of work afterwards.
In some alternative embodiments, it controls and frequency redution operation is carried out to the compressor of air-conditioning, comprising: obtained according to temperature gap
Take corresponding frequency reducing value；Current operation frequency based on compressor carries out frequency redution operation according to frequency reducing value.
Among these, temperature gap includes: the first temperature difference between outdoor leaving air temp maximum value and outdoor leaving air temp
Value, or, the second temperature difference between upper housing temperature maximum and upper casing temperature.
In technology contents above, the first temperature gap and second temperature difference are the sons of entry condition of hereinbefore defrosting
One of condition；It, can be according to the first temperature gap and the second temperature when therefore determining satisfaction defrosting entry condition in step s 102
It spends difference and speculates outdoor heat exchanger frosting degree, and then the frequency reducing value adjusted according to frequency of the frosting degree selection to compressor,
To meet the defrosting needs of air-conditioning.
For example, larger to air-conditioning heating performance degradation, then setting is to compression when the frosting degree of outdoor heat exchanger is higher
The frequency reducing value of machine is larger；Conversely, then setting is to this when the frosting degree of outdoor heat exchanger is lower.
Optionally, corresponding frequency reducing value is obtained according to temperature gap, comprising: according to the first temperature gap, from the first association
Corresponding first frequency reducing value is obtained in relationship, to carry out frequency redution operation according to the first frequency reducing value.
It here, include the corresponding relationship of one or more first temperature gaps and the first frequency reducing value in the first incidence relation.
For example, the corresponding relationship of a kind of optional first temperature gap and the first frequency reducing value is shown in table 1, as shown in the table,
| First temperature gap (unit: DEG C) | First frequency reducing value (unit: Hz) |
| A1 < Tmax-TOutlet air≤a2 | h11 |
| A2 < Tmax-TOutlet air≤a3 | h12 |
| A3 < Tmax-TOutlet air | h13 |
Table 1
In first incidence relation, the first frequency reducing value and the first temperature gap are negative correlation.I.e. the first temperature gap is bigger, then
First frequency reducing value is with regard to smaller；And the first temperature gap is smaller, then the first frequency reducing value is bigger.
It therefore, can be first true according to first incidence relation when in executing step S102 to the frequency redution operation of compressor
The fixed corresponding first frequency reducing value of first temperature gap, then according to the first frequency reducing value making frequency adjustment.
It is another optional, corresponding frequency reducing value is obtained according to temperature gap, comprising: according to second temperature difference, from second
Corresponding second frequency reducing value is obtained in incidence relation, to carry out frequency redution operation according to the second frequency reducing value.
It here, include the corresponding relationship of one or more second temperature differences and the second frequency reducing value in the second incidence relation.
For example, the corresponding relationship of a kind of optional second temperature difference and the second frequency reducing value is shown in table 2, as shown in the table,
| Second temperature difference (unit: DEG C) | Second frequency reducing value (unit: Hz) |
| B1 < TUpper housing max-TUpper housing≤b2 | h21 |
| B2 < TUpper housing max-TUpper housing≤b3 | h22 |
| B3 < TUpper housing max-TUpper housing | h23 |
Table 2
In second incidence relation, the second frequency reducing value and second temperature difference are negative correlation.That is second temperature difference is bigger, then
Second frequency reducing value is with regard to smaller；And second temperature difference is smaller, then the second frequency reducing value is bigger.
It therefore, can be first true according to second incidence relation when in executing step S102 to the frequency redution operation of compressor
The corresponding second frequency reducing value of second temperature difference is determined, then according to the second frequency reducing value making frequency adjustment.
In the above-described embodiments, the influence size due to the height of the frosting degree of outdoor heat exchanger to air-conditioning heating performance
Difference, and then it is different to influence amplitude to the temperature change of the first temperature gap with second temperature difference, therefore the application is respective
It is provided with an individual incidence relation, air-conditioning can select according to actual needs one of incidence relation to determine corresponding heating
Rate.
Optionally, the incidence relation specifically selected can also be determined according to the heating needs of active user, for example, current
When the heating needs of user are lower, then the second incidence relation is selected, at this time mainly in view of corresponding to second temperature difference
Influence of the outdoor units such as the upper casing temperature parameter to defrosting effect；And when the heating needs of active user are higher, then is selected
One incidence relation, at this time mainly in view of being influenced caused refrigerant heat exchanger and interior indoors by outdoor heat exchanger frosting
The situation of change of the heat exchanger effectiveness of environment, to guarantee heating performance.
Here, the negatively correlated ratio of the first incidence relation is greater than the negatively correlated ratio in the second incidence relation.I.e. same number
In the case of the temperature gap of value, corresponding first frequency reducing value is greater than corresponding in the second incidence relation in the first incidence relation
Two frequency reducing values.
Here, the heating needs of active user can heat temperature by the target set to air-conditioning and be determined；For example,
Air-conditioning is preset with a heating temperature threshold, when the target of user's actual set heating temperature is less than the heating temperature threshold, then
Illustrate that the heating needs of user at this time are lower；And when the target of user's actual set heating temperature is greater than or equal to the heating temperature
When threshold value, then illustrate the heating needs height of user at this time.
In this way, air-conditioning can not only be timely triggered in the embodiment of the present disclosure according to the practical frosting situation of air-conditioning for outdoor
The defrosting of heat exchanger operates, while the heating of user can also be taken into account when executing the defrosting to compressor frequency redution operation and operating
Demand, to fully ensure that air-conditioning during defrosting to the control requirement of users'comfort.
In other optional embodiment, after controlling the compressor to air-conditioning and carrying out frequency redution operation, further includes: control
Reduce the revolving speed of the indoor fan of air-conditioning.
In embodiment, pass through the revolving speed of the indoor fan of reduction air-conditioning, it is possible to reduce indoor heat exchanger and indoor environment
Exchange rate so that indoor heat exchanger outflow after flow into outdoor heat exchanger refrigerant can retain more heat, can
It improves using refrigerant heat to the defrosting effect of outdoor heat exchanger, the operation power consumption of heating devices heat refrigerant can also be reduced.
In other optional embodiment, after controlling the compressor to air-conditioning and carrying out frequency redution operation, further includes: control
Shut down the outdoor fan of air-conditioning.
It in embodiment, can also be with the heat exchange speed of less outdoor heat exchanger and outdoor environment by shutting down outdoor fan
Rate, the cryogenic conditions for reducing outdoor environment influence the unfavorable temperature of outdoor heat exchanger frosting, reduce the refrigerant heat of defrost
Heat dissipation, with guarantee defrosting during practical defrosting effect.
Fig. 2 is the flow diagram for the control method for air-conditioner defrosting that the another embodiment of the disclosure provides.
As shown in Fig. 2, the embodiment of the present disclosure provides another control method for air-conditioner defrosting, rate-determining steps master
Include:
S201, air-conditioning booting, are run with heating mode；
In the present embodiment, air-conditioning general user under the conditions of low temperature severe cold weather sets heating mode and opens as present mode
Machine operation.
S202, the indoor inlet air temperature T for detecting indoor unitAir inlet, indoor coil pipe TpAnd the upper housing of outdoor heat exchanger
Temperature TUpper housing；
S203, judge whether Tmax-TOutlet air≤ △ T1, TUpper housing max-TUpper housing>=△ T2, if so, thening follow the steps S204, such as
Fruit is no, then returns to step S202；
In the embodiments of the present disclosure, Tmax-TOutlet air≤ △ T1, TUpper housing max-TUpper housing>=△ T2 collectively form it is preset defrost into
Enter condition.
Here, after air-conditioning booting operation, temperature sensor real-time detection upper casing temperature, and the more upper casings that will test
Temperature is saved as historical data；Therefore it when executing the judgment step of step S203, can transfer in historical data
Multiple upper casing temperatures, and determine upper housing temperature maximum T by comparingUpper housing max；
If meeting the defrosting entry condition, illustrate that outdoor heat exchanger of air conditioner has frosting at this time；And if not
Meet the defrosting entry condition, then illustrates that frosting problem is not present in outdoor heat exchanger of air conditioner at this time.
S204, according to Tmax-TOutlet air, corresponding first frequency reducing value is obtained from the first incidence relation；
In the embodiments of the present disclosure, the specific executive mode of step S204 may refer to embodiment hereinbefore, herein not
It repeats.
S205, frequency redution operation is carried out to compressor according to the first frequency reducing value；Process terminates.
The control method for air-conditioner defrosting that the embodiment of the present disclosure provides can go out wind-warm syndrome according to the outdoor acquired
Whether degree and these parametric synthesis of upper casing temperature meet the judgement of defrosting entry condition to air-conditioning, so as to effectively improve
To the control precision of control air-conditioner defrosting；And changing for outdoor heat exchanger and outdoor environment is reduced by frequency redution operation to compressor
Heat, and then the adverse effect of the temperature factors such as outdoor heat exchanger hull-skin temperature is too low caused by reducing because largely absorbing heat,
So as to improve the frosting situation of outdoor heat exchanger, to reduce frost condensation to the adverse effect of air-conditioning itself heating performance.
In some alternative embodiments, after controlling to compressor progress frequency redution operation, further includes: obtain operation of air conditioner
State parameter in heating mode processes；After determining satisfaction defrosting exit criteria according to state parameter, control compressor switching
To heating working frequency.
Here, the state parameter in operation of air conditioner heating mode processes is at least one of following parameter type or several
Kind: outdoor environment temperature, refrigerant feed liquor temperature, refrigerant go out liquid temperature and outdoor coil temperature.It should be understood that in the application
The state parameter of acquisition is not limited to parameter type shown in above-described embodiment.
Corresponding, defrosting exit criteria is preset according to the parameter type specifically acquired, in general, in sky
Adjust and illustrate that outdoor heat exchanger has defrosted completions when meeting defrosting exit criteria, on outdoor heat exchanger there is no it is solidifying white or there is only
A small amount of solidifying frost, influences the normal heating performance of air-conditioning lower；For example, when parameter type is outdoor environment temperature, then it is a kind of
Optional defrosting exit criteria is that outdoor environment temperature is greater than or equal to preset outer circumstance temperature threshold value.
Then after acquiring outdoor environment temperature, according to outdoor environment temperature to whether meet defrosting exit criteria sentence
It is disconnected；If it is satisfied, then control restores the heating working frequency of compressor；If conditions are not met, then maintaining currently running work shape
State is constant.
In the embodiments of the present disclosure, air-conditioning is during control carries out frequency redution operation to compressor, in real time according to sky
The parameter of tune carry out to defrosting exit criteria judgement operation, with meet defrost exit criteria in the case where stop compressor with
Frequency operation after frequency reducing, so as to switch back into working frequency of the air-conditioning normally under heating state in time, to reduce defrosting behaviour
Make the influence that work is normally heated to air-conditioning.
Fig. 3 is the structural schematic diagram for the control device for air-conditioner defrosting that the embodiment of the present disclosure provides.
The embodiment of the present disclosure provides a kind of control device for air-conditioner defrosting, and structure is as shown in Figure 3, comprising:
Processor (processor) 300 and memory (memory) 301 can also include communication interface
(Communication Interface) 302 and bus 303.Wherein, processor 300, communication interface 302, memory 301 can
To complete mutual communication by bus 303.Communication interface 302 can be used for information transmission.Processor 300 can be called and be deposited
Logical order in reservoir 301, to execute the control method for air-conditioner defrosting of above-described embodiment.
In addition, the logical order in above-mentioned memory 301 can be realized by way of SFU software functional unit and conduct
Independent product when selling or using, can store in a computer readable storage medium.
Memory 301 is used as a kind of computer readable storage medium, can be used for storing software program, journey can be performed in computer
Sequence, such as the corresponding program instruction/module of the method in the embodiment of the present disclosure.Processor 300 is stored in memory 301 by operation
In program instruction/module, thereby executing functional application and data processing, i.e., in realization above method embodiment for sky
Adjust the control method of defrosting.
Memory 301 may include storing program area and storage data area, wherein storing program area can storage program area,
Application program needed at least one function；Storage data area, which can be stored, uses created data etc. according to terminal device.
In addition, memory 301 may include high-speed random access memory, it can also include nonvolatile memory.
Disclosure implementation additionally provides a kind of air-conditioning, comprising:
Refrigerant circulation circuit is connected by outdoor heat exchanger, indoor heat exchanger, throttling set and compressor by refrigerant pipeline
It constitutes；
For the control device of air-conditioner defrosting, with compression mechatronics.Here, which is
Control device shown in embodiment above.
Air-conditioning in the embodiment of the present disclosure can be detected accurately and judge that air-conditioning whether there is frosting problem, and in sky
In the case that tune has frosting, corresponding defrosting operation is carried out using above-mentioned control device and compressor, to reduce sky
The frost amount condensed on outdoor heat exchanger is adjusted, guarantees that air-conditioning can be normally to indoor environment system under the conditions of low temperature harsh climate
Heat promotes the usage experience of user.
The embodiment of the present disclosure additionally provides a kind of computer readable storage medium, is stored with computer executable instructions, meter
Calculation machine executable instruction is arranged to carry out the above-mentioned method for air-conditioner defrosting.
The embodiment of the present disclosure additionally provides a kind of computer program product, and computer program product includes being stored in computer
Computer program on readable storage medium storing program for executing, computer program include program instruction, when program instruction is computer-executed, are made
Computer executes the above-mentioned method for air-conditioner defrosting.
Above-mentioned computer readable storage medium can be transitory computer readable storage medium, be also possible to non-transient meter
Calculation machine readable storage medium storing program for executing.
The technical solution of the embodiment of the present disclosure can be embodied in the form of software products, which deposits
Storage in one storage medium, including one or more instruction is used so that computer equipment (can be personal computer,
Server or the network equipment etc.) execute embodiment of the present disclosure the method all or part of the steps.And storage above-mentioned is situated between
Matter can be non-transient storage media, comprising: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), with
Machine accesses a variety of Jie that can store program code such as memory (RAM, Random Access Memory), magnetic or disk
Matter is also possible to transitory memory medium.
Above description and attached drawing sufficiently illustrate embodiment of the disclosure, to enable those skilled in the art to practice
They.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment only represents
Possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can change.
The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.The embodiment of the present disclosure
Range includes the entire scope of claims and all obtainable equivalents of claims.When for the application
When middle, although term " first ", " second " etc. may be used in this application to describe each element, these elements should not be by
To the limitation of these terms.These terms are only used to differentiate an element with another element.For example, not changing description
Meaning in the case where, first element can be called second element, and same, and second element can be called first element,
As long as " first element " that is occurred unanimously renames and " second element " occurred unanimously renames.First
Element and second element are all elements, but can not be identical element.Moreover, word used herein is only used for describing
Embodiment and it is not used in limitation claim.As used in the description in embodiment and claim, unless context
It clearly illustrates, otherwise "one" (a) of singular, "one" (an) and " described " (the) is intended to equally include plural shape
Formula.Similarly, term "and/or" refers to and associated lists comprising one or more as used in this specification
Any and all possible combination.In addition, when in the application, term " includes " (comprise) and its modification " packet
Include " (comprises) and/or feature, entirety, step, operation, element and/or group including the statement such as (comprising) fingers
The presence of part, but it is not excluded for one or more other features, entirety, step, operation, element, component and/or these point
The presence or addition of group.In the absence of more restrictions, the element limited by sentence " including one ... ", it is not excluded that
There is also other identical elements in process, method or equipment including the element.Herein, each embodiment emphasis is said
Bright can be the difference from other embodiments, and the same or similar parts in each embodiment can refer to each other.For
For method, product disclosed in embodiment etc., if it is corresponding with method part disclosed in embodiment, related place can
Referring to the description of method part.
It will be appreciated by those of skill in the art that unit described in conjunction with the examples disclosed in the embodiments of the present disclosure and
Algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually with hard
Part or software mode execute, and can depend on the specific application and design constraint of technical solution.The technical staff
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The range of the embodiment of the present disclosure.The technical staff can be understood that, for convenience and simplicity of description, foregoing description
The specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, no longer superfluous herein
It states.
In embodiments disclosed herein, disclosed method, product (including but not limited to device, equipment etc.) can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
Divide, can be only a kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or
Component can be combined or can be integrated into another system, or some features can be ignored or not executed.In addition, shown
Or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit it is indirect
Coupling or communication connection can be electrical property, mechanical or other forms.The unit as illustrated by the separation member can be or
Person, which may not be, to be physically separated, and component shown as a unit may or may not be physical unit
With in one place, or may be distributed over multiple network units.Portion therein can be selected according to the actual needs
Point or whole unit realize the present embodiment.In addition, each functional unit in the embodiments of the present disclosure can integrate at one
In processing unit, it is also possible to each unit and physically exists alone, a list can also be integrated in two or more units
In member.
The flow chart and block diagram in the drawings show system, the method and computer program products according to the embodiment of the present disclosure
Architecture, function and operation in the cards.In this regard, each box in flowchart or block diagram can represent one
A part of module, section or code, a part of the module, section or code include it is one or more for realizing
The executable instruction of defined logic function.In some implementations as replacements, function marked in the box can also be with
Occur different from the sequence marked in attached drawing.For example, two continuous boxes can actually be basically executed in parallel, they
Sometimes it can also execute in the opposite order, this can be depended on the functions involved.Flow chart and block diagram institute in the accompanying drawings
In corresponding description, operation corresponding to different boxes or step can also be to be different from sequence hair disclosed in description
Raw, there is no specific sequences between sometimes different operations or step.For example, two continuous operations or step actually may be used
To be basically executed in parallel, they can also be executed in the opposite order sometimes, this can be depended on the functions involved.Block diagram
And/or the combination of each box in flow chart and the box in block diagram and or flow chart, it can the function as defined in executing
Can or the dedicated hardware based system of movement realize, or can come using a combination of dedicated hardware and computer instructions real
It is existing.
Claims (10)
1. a kind of control method for air-conditioner defrosting characterized by comprising
In the operation of air conditioner heating mode processes, the outdoor leaving air temp of outdoor unit and the upper casing of outdoor heat exchanger are obtained
Temperature；
After determining satisfaction defrosting entry condition according to the outdoor leaving air temp and the upper casing temperature, control to the sky
The compressor of tune carries out frequency redution operation.
2. control method according to claim 1, which is characterized in that the defrosting entry condition includes:
Tmax-TOutlet air≤ △ T1, TUpper housing max-TUpper housing≥△T2；
Wherein, TmaxFor the outdoor leaving air temp maximum value recorded after this booting operation of the air-conditioning, TOutlet airGo out for the outdoor
Air temperature, TUpper housing maxUpper housing temperature maximum for the outdoor heat exchanger recorded after this booting operation of the air-conditioning, TUpper housing
For the upper casing temperature of the outdoor heat exchanger, △ T1 is preset first temperature difference threshold, and △ T2 is preset second temperature difference threshold
Value.
3. control method according to claim 2, which is characterized in that the compressor of the air-conditioning drops in the control
Frequency operates, comprising:
Corresponding frequency reducing value is obtained according to temperature gap；Wherein, it includes: described that the temperature gap, which includes: the temperature gap,
The first temperature gap between outdoor leaving air temp maximum value and the outdoor leaving air temp, or, the upper housing maximum temperature
Second temperature difference between value and the upper casing temperature；
Based on the current operation frequency of the compressor, the frequency redution operation is carried out according to the frequency reducing value.
4. control method according to claim 3, which is characterized in that described to obtain corresponding frequency reducing according to temperature gap
Value, comprising:
According to first temperature gap, corresponding first frequency reducing value is obtained from the first incidence relation, according to described first
Frequency reducing value carries out the frequency redution operation；Alternatively,
According to the second temperature difference, corresponding second frequency reducing value is obtained from the second incidence relation, according to described second
Frequency reducing value carries out the frequency redution operation.
5. control method according to claim 4, which is characterized in that in first incidence relation, first temperature
Difference and the first frequency reducing value are negative correlation；
In second incidence relation, the second temperature difference and the second frequency reducing value are negative correlation.
6. control method according to claim 5, feature now with the negatively correlated ratio of first incidence relation is big
Negatively correlated ratio in second incidence relation.
7. control method according to any one of claims 1 to 6, which is characterized in that controlling the compression to the air-conditioning
After machine carries out frequency redution operation, further includes:
Control reduces the revolving speed of the indoor fan of the air-conditioning.
8. control method according to any one of claims 1 to 6, which is characterized in that controlling the compression to the air-conditioning
After machine carries out frequency redution operation, further includes:
The outdoor fan of the air-conditioning is shut down in control.
9. a kind of control device for air-conditioner defrosting, including processor and the memory for being stored with program instruction, feature exists
In the processor is configured to executing as claimed in any one of claims 1 to 8 be used for when executing described program instruction
The control method of air-conditioner defrosting.
10. a kind of air-conditioning characterized by comprising
Refrigerant circulation circuit connects structure by refrigerant pipeline by outdoor heat exchanger, indoor heat exchanger, throttling set and compressor
At；
The control device as claimed in claim 9 for being used for air-conditioner defrosting, with the compression mechatronics.
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