CN110470000A - 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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- CN110470000A CN110470000A CN201910686078.6A CN201910686078A CN110470000A CN 110470000 A CN110470000 A CN 110470000A CN 201910686078 A CN201910686078 A CN 201910686078A CN 110470000 A CN110470000 A CN 110470000A
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- air
- conditioning
- temperature
- indoor
- defrosting
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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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
-
- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (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 the indoor inlet air temperature that indoor unit is obtained in the operation of air conditioner heating mode processes, indoor coil pipe and outdoor heat exchanger；After determining satisfaction defrosting entry condition according to the indoor inlet air temperature, indoor coil pipe and the upper casing temperature, control increases the flow aperture of the throttling set of the air-conditioning.Whether the control method can meet the judgement of defrosting entry condition according to the upper casing temperature of indoor inlet air temperature, indoor coil pipe and outdoor heat exchanger to air-conditioning, improve the control precision to control air-conditioner defrosting；And the flow aperture by increasing throttling set changes refrigerant temperature and pressure in refrigerant circulation circuit etc., and the refrigerant for finally flowing into outdoor heat exchanger progress defrost is enable to reach preferable defrosting effect.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, obtain indoor inlet air temperature, the indoor coil pipe of indoor unit with
And the upper casing temperature of outdoor heat exchanger；
Determining that meeting defrosting enters item according to the indoor inlet air temperature, indoor coil pipe and the upper casing temperature
After part, control increases the flow aperture of the throttling set of the air-conditioning.
In some embodiments, the 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, it is electrically connected with the throttling set.
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 indoor air inlet temperature acquired
Degree, indoor coil pipe and these parametric synthesis of the upper casing temperature of outdoor heat exchanger enter to whether air-conditioning meets defrosting
The judgement of condition, so as to effectively improve the control precision to control air-conditioner defrosting；And the flow by increasing throttling set
Aperture changes refrigerant temperature and pressure in refrigerant circulation circuit etc., enables to finally flow into the refrigerant that outdoor heat exchanger carries out defrost
Reach preferable defrosting effect, enough to reduce frost condensation to the adverse effect of air-conditioning itself 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 indoor inlet air temperature, the indoor coil pipe of indoor unit with
And the upper casing temperature of outdoor heat exchanger；
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 indoor unit of air-conditioning is provided with one first temperature sensor, which passes
Sensor can be used for detecting the inlet air temperature that indoor unit enters the wind air-flow in real time；Therefore, in step s101 it is acquired it is indoor into
Air temperature can be the real time temperature that air-flow is entered the wind by indoor unit detected by first temperature sensor；
Optionally, on the first temperature sensor is set in the air outlet grate or wind inlet channel of indoor unit air inlet, with
It is on the outlet air path of air inlet air-flow of indoor unit, to improve the detection accuracy to indoor air temperature.
In addition, the indoor unit of air-conditioning is provided with a second temperature sensor, which can be used for sensing chamber
The real time temperature of the coil pipe position of interior machine indoor heat exchanger；Therefore, acquired indoor coil pipe can be in step s101
It is by indoor unit detected by the second temperature sensor into the real time temperature at coil pipe position；
In the embodiments of the present disclosure, in the case that outdoor environment is more severe, the low temperature of outdoor environment can be to air-conditioning
Heating performance and indoor environment temperature constitute influence, make air-conditioning heating performance decline, flow into indoor heat exchanger refrigerant temperature
It reduces, and reduces indoor environment；Here, influence variation of the outdoor environment variation to the heating performance of air-conditioning becomes apparent,
Therefore, outdoor environment can be judged according to the situation of change of the temperature gap between indoor coil pipe and indoor inlet air temperature
Severe degree, and then judge whether outdoor heat exchanger is likely to occur solidifying white problem；The indoor inlet air temperature that gets in this way and
Indoor coil pipe is to can be used as the reference factor for measuring outdoor heat exchanger frosting degree.
In an alternative embodiment, the outdoor unit of air-conditioning is additionally provided with a third temperature sensor, the third 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 third 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, satisfaction defrosting entry condition is being determined according to indoor inlet air temperature, indoor coil pipe and upper casing temperature
Afterwards, control increases the flow aperture of the throttling set of air-conditioning.
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 is the indoor inlet air temperature of the indoor unit acquired in step S101, room
Whether inner coil pipe temperature and these three parameters of the upper casing temperature of outdoor heat exchanger are to meeting defrosting entry condition and judge；
Air-conditioning is judged with the presence or absence of frosting problem jointly in this way, the embodiment of the present disclosure combines above-mentioned three kinds of factor parameters, it can
The judgement precision to air-conditioner defrosting is greatly improved, so that can be more in line with air-conditioning real-time for the defrosting operation of air-conditioning triggering
Frosting situation.
In an alternative embodiment, the defrosting entry condition in step S102 includes:
△Tmax- △ T >=△ T1, TUpper housing max-TUpper housing≥△T2；
Wherein, △ TmaxFor air-conditioning, this is switched between the indoor coil pipe recorded after operation and outdoor leaving air temp
Maximum difference, △ T are the heat-exchange temperature difference between indoor coil pipe and outdoor leaving air temp, TUpper housing maxFor air-conditioning, this is opened
The upper housing temperature maximum of the outdoor heat exchanger recorded after machine operation, TUpper housingFor the upper casing temperature of outdoor heat exchanger, △ T1
For preset first temperature difference threshold, △ T2 is preset second temperature difference threshold.
In the defrosting entry condition, maximum difference between indoor coil pipe and indoor inlet air temperature, with indoor coil
The height of the temperature gap between heat-exchange temperature difference between temperature and indoor inlet air temperature can reflect different frosting shapes
Indoor heat exchanger effectiveness under condition；Such as in the case where air-conditioning non-frosting, indoor coil pipe and indoor inlet air temperature compared with
Height, therefore △ TmaxIt is typically used for indicating under the non-frosting situation of air-conditioning in the difference of indoor coil pipe and indoor inlet air temperature
Limit；And in air-conditioning there are in the case where frosting, since air-conditioning is influenced more obvious, indoor coil pipe by outdoor environment
Become larger with the difference of indoor inlet air temperature, being mostly can be beyond the difference upper limit in the case of previous non-frosting.In this way, the application's removes
One of white entry condition is to carry out defrosting judgement according to the temperature change speed of inlet air temperature indoor under operating condition outside different chamber.
Optionally, △ TmaxThe indoor coil pipe of record usually in air-conditioning booting operation setting time and it is indoor into
Generally not yet there is frosting problem in the setting time of air-conditioning booting operation in maximum difference between air temperature, and such as 5 points
Clock, 10 minutes etc.；I.e. the maximum difference is difference upper limit when air-conditioning does not occur frosting problem；
Alternatively, △ TmaxIt is also possible to before air-conditioning products dispatch from the factory the simulation of operation that is switched at different temperatures by air-conditioning
The numerical value that experimental data obtains.
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, meet when according to indoor inlet air temperature, indoor coil pipe and upper casing temperature are determining
After the entry condition that defrosts, the defrosting operation of air-conditioning includes the flow aperture that control increases the throttling set of air-conditioning.
In embodiment, by increasing the flow aperture of the throttling set of air-conditioning, the throttling effect of throttling set can be reduced
Fruit is able to maintain higher temperature to flow through the refrigerant of throttling set, to enable the subsequent refrigerant for flowing into outdoor heat exchanger
Enough realize preferable defrosting effect.
Here, after air-conditioning exits defrosting, it can control and restore air-conditioner throttling device to former flow aperture rate, moved back with meeting
Air-conditioning normally heats the throttling requirement of work after defrosting out.
In some alternative embodiments, control increases the flow aperture of the throttling set of air-conditioning, comprising: according to indoor coil
Temperature determines corresponding target flow aperture；The throttling set of air-conditioning is adjusted to target flow aperture.
Wherein, target flow aperture is greater than the heating flow aperture in heating mode processes.
Optionally, corresponding target flow aperture is determined according to indoor coil pipe, comprising: according to indoor coil pipe,
Corresponding first object flow aperture is obtained, from the first incidence relation to adjust throttling dress according to first object flow aperture
It sets.
It here, include that one or more indoor coil pipes are corresponding with first object flow aperture in the first incidence relation
Relationship.For example, the corresponding relationship of a kind of optional indoor coil pipe and first object flow aperture is shown in table 1, it is as follows
Shown in table,
| Indoor coil pipe (unit: DEG C) | First object flow aperture |
| A1 < Tp≤a2 | B11 |
| A2 < Tp≤a3 | B12 |
| A3 < Tp | B13 |
Table 1
In first incidence relation, first object flow aperture and indoor coil pipe are to be positively correlated.That is indoor coil pipe
Bigger, then first object flow aperture is bigger；And indoor coil pipe is smaller, then first object flow aperture is with regard to smaller.
It therefore, can be first according to first association when adjusting operation to the aperture of throttling set in executing step S102
Relationship determines the corresponding first object flow aperture of indoor coil pipe, then carries out aperture tune according to first object flow aperture
It is whole.
It is another optional, corresponding target flow aperture is determined according to indoor coil pipe, comprising: according to indoor coil temperature
The rate temperature change of degree obtains corresponding second target flow aperture, according to the second target stream from the second incidence relation
It measures aperture and adjusts throttling set.
It here, include the rate temperature change and the second target of one or more indoor coil pipes in the second incidence relation
The corresponding relationship of flow aperture.For example, showing a kind of rate temperature change and second of optional indoor coil pipe in table 2
The corresponding relationship of target flow aperture, as shown in the table,
| Rate temperature change (unit: DEG C/min) | Second target flow aperture |
| B1 < △ Tp/t≤b2 | B21 |
| B2 < △ Tp/t≤b3 | B22 |
| B3 < △ Tp/t | B23 |
Table 2
In second incidence relation, the rate temperature change of the second target flow aperture and indoor coil pipe is to be positively correlated.
I.e. rate temperature change is bigger, then the second target flow aperture is bigger；And rate temperature change is smaller, then the second target flow
Aperture is with regard to smaller.
It therefore, can be first according to second association when adjusting operation to the aperture of throttling set in executing step S102
Relationship determines the corresponding second target flow aperture of the rate temperature change of indoor coil pipe, then according to the second target flow
Aperture carries out aperture adjustment.
In the above-described embodiments, indoor coil pipe and its rate temperature change are to respectively correspond indoor coil for a long time
It is also different on the influence of the speed of indoor environment temperature with the situation of change in the short time, therefore the application is respectively to set
It is equipped with an individual incidence relation, air-conditioning can select one of incidence relation to determine corresponding heating speed according to actual needs
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 first incidence relation is selected, is carried out with being changed according to the indoor coil pipe in long-time
Adjustment；And when the heating needs of active user are higher, then select the second incidence relation, to avoid in the short time by indoor coil
Rate temperature change influence causes indoor environment temperature to decline obvious problem.
Here, the negatively correlated ratio of the first incidence relation is less 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 less 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 can also take into account user's when the defrosting that the flow executed to throttling set is adjusted operates
Heating needs, to fully ensure that air-conditioning during defrosting to the control requirement of users'comfort.
In other optional embodiment, after the flow aperture that control increases the throttling set of air-conditioning, further includes: control
System reduces 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 the flow aperture that control increases the throttling set of air-conditioning, further includes: control
System shuts 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 △ T- △ Tmax>=△ T1, TUpper housing max-TUpper housing>=△ T2, if so, S204 is thened follow the steps,
If it is not, then returning to step S202；
In the embodiments of the present disclosure, △ T- △ Tmax>=△ T1, TUpper housing max-TUpper housing>=△ T2 collectively forms preset defrosting
Entry 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 indoor coil pipe Tp, corresponding first object flow aperture 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, throttling set is adjusted according to the first object flow aperture；Process terminates.
The control method for air-conditioner defrosting that the embodiment of the present disclosure provides can be according to the indoor air inlet temperature acquired
Degree, indoor coil pipe and these parametric synthesis of the upper casing temperature of outdoor heat exchanger enter to whether air-conditioning meets defrosting
The judgement of condition, so as to effectively improve the control precision to control air-conditioner defrosting；And the flow by increasing throttling set
Aperture changes refrigerant temperature and pressure in refrigerant circulation circuit etc., enables to finally flow into the refrigerant that outdoor heat exchanger carries out defrost
Reach preferable defrosting effect, enough to reduce frost condensation to the adverse effect of air-conditioning itself heating performance.
In some alternative embodiments, after the flow aperture of throttling set for increasing air-conditioning in control, further includes: obtain
State parameter in operation of air conditioner heating mode processes；After determining satisfaction defrosting exit criteria according to state parameter, control section
Stream device switches to heating flow aperture.
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 flow aperture of throttling set；If conditions are not met, then maintaining currently running work
State is constant.
In the embodiments of the present disclosure, air-conditioning is in controlling the flow adjustment process to throttling set, in real time according to air-conditioning
Parameter carry out to defrosting exit criteria judgement operation, with meet defrost exit criteria in the case where stop throttling set with
The operation of present flow rate aperture is removed so as to switch back into heating flow aperture of the air-conditioning normally under heating state in time with reducing
Frost operation normally heats the influence of work 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, it is electrically connected with throttling set.Here, the control device for being used for air-conditioner defrosting
For 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 throttling set device, with
The frost amount condensed on outdoor heat exchanger of air conditioner is reduced, guarantees that air-conditioning can be normally to indoor ring under the conditions of low temperature harsh climate
Border heating, 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, indoor inlet air temperature, indoor coil pipe and the room of indoor unit are obtained
The upper casing temperature of external heat exchanger；
Meet defrosting entry condition determining according to the indoor inlet air temperature, indoor coil pipe and the upper casing temperature
Afterwards, control increases the flow aperture of the throttling set of the air-conditioning.
2. control method according to claim 1, which is characterized in that the defrosting entry condition includes:
△Tmax- △ T >=△ T1, TUpper housing max-TUpper housing≥△T2；
Wherein, △ TmaxFor the air-conditioning, this is switched between the indoor coil pipe recorded after operation and outdoor leaving air temp
Maximum difference, △ T are the heat-exchange temperature difference between the indoor coil pipe and the outdoor leaving air temp, TUpper housing maxFor institute
State the upper housing temperature maximum of the outdoor heat exchanger recorded after this booting operation of air-conditioning, TUpper housingFor the outdoor heat exchanger
Upper casing temperature, △ T1 are preset first temperature difference threshold, and △ T2 is preset second temperature difference threshold.
3. control method according to claim 2, which is characterized in that the control increases the throttling set of the air-conditioning
Flow aperture, comprising:
Corresponding target flow aperture is determined according to the indoor coil pipe；Wherein, the target flow aperture is greater than described
Heating flow aperture in heating mode processes；
The throttling set of the air-conditioning is adjusted to the target flow aperture.
4. control method according to claim 3, which is characterized in that described to determine corresponding mesh according to indoor coil pipe
Mark flow aperture, comprising:
According to the indoor coil pipe, corresponding first object flow aperture is obtained from the first incidence relation, according to institute
It states first object flow aperture and adjusts the throttling set.
5. control method according to claim 4, which is characterized in that in first incidence relation, the indoor coil
Temperature and the first object flow aperture are to be positively correlated.
6. control method according to claim 3, which is characterized in that described to determine corresponding mesh according to indoor coil pipe
Mark flow aperture, comprising:
According to the rate temperature change of the indoor coil pipe, corresponding second target flow is obtained from the second incidence relation
Aperture, to adjust the throttling set according to the second target flow aperture.
7. control method according to any one of claims 1 to 6, which is characterized in that increase the section of the air-conditioning in control
After the flow aperture for flowing device, 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 increase the section of the air-conditioning in control
After the flow aperture for flowing device, 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, is electrically connected with the throttling set.
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| CN201910686078.6A CN110470000B (en) | 2019-07-28 | 2019-07-28 | Control method and device for defrosting of air conditioner and air conditioner |
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| CN201910686078.6A CN110470000B (en) | 2019-07-28 | 2019-07-28 | Control method and device for defrosting of air conditioner and air conditioner |
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| CN110470000B (en) | 2022-04-15 |
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