CN110469979A - 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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- CN110469979A CN110469979A CN201910682534.XA CN201910682534A CN110469979A CN 110469979 A CN110469979 A CN 110469979A CN 201910682534 A CN201910682534 A CN 201910682534A CN 110469979 A CN110469979 A CN 110469979A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 114
- 238000010257 thawing Methods 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims abstract description 165
- 239000003507 refrigerant Substances 0.000 claims abstract description 136
- 230000008569 process Effects 0.000 claims abstract description 13
- 230000000875 corresponding effect Effects 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 21
- 230000002596 correlated effect Effects 0.000 claims description 6
- 230000036760 body temperature Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 13
- 230000008859 change Effects 0.000 description 11
- 230000006870 function Effects 0.000 description 11
- 238000004891 communication Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000004590 computer program Methods 0.000 description 5
- 230000006698 induction Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000007791 dehumidification Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000009916 joint effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- 230000001276 controlling effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—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
- 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
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
-
- 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: to obtain the upper casing temperature of indoor coil pipe, outdoor coil temperature and outdoor heat exchanger in operation of air conditioner heating mode processes；After determining satisfaction defrosting entry condition according to indoor coil pipe, the outdoor coil temperature and upper casing temperature, control enters reverse cycle defrosting mode and executes the first heating operation to the refrigerant on the refrigerant outlet tube road for flowing through outdoor heat exchanger.Whether the control method meets the judgement of defrosting entry condition according to the upper casing temperature of indoor coil pipe, outdoor coil temperature and outdoor heat exchanger to air-conditioning, improves the control precision to control air-conditioner defrosting；And reverse cycle defrosting mode and by way of heating to the refrigerant for flowing through refrigerant outlet tube road, accelerate 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, obtains indoor coil pipe, outdoor coil temperature and outdoor and change
The upper casing temperature of hot device；
According to the indoor coil pipe, the outdoor coil temperature and the upper casing temperature determine meet defrost into
After entering condition, control enters reverse cycle defrosting mode and executes the refrigerant outlet tube to the outdoor heat exchanger for flowing through the air-conditioning
First heating operation of the refrigerant on road.
In some embodiments, the control device for air-conditioner defrosting includes:
Processor and the memory for being stored with program instruction, the processor is configured to executing described program instruction
When, execute 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；
Heating device is set to the outdoor heat exchanger on the refrigerant outlet tube road under the heating mode, is configured
To be heated to the refrigerant for flowing through refrigerant outlet tube road；
Such as above-mentioned some control devices as described in the examples for air-conditioner defrosting, it is electrically connected with the heating device.
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 coil temperature acquired
Degree, outdoor coil temperature 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 it is utilized by reverse cycle defrosting mode
High temperature refrigerant defrosts to outdoor heat exchanger, and is further increased by way of heating to the refrigerant for flowing through refrigerant outlet tube road
Inverse circulation pattern flows down into the refrigerant temperature of outdoor heat exchanger, can effectively improve the defrosting efficiency to outdoor heat exchanger, accelerates
Frost condensation is reduced 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；
Fig. 4 is the structural schematic diagram for the air-conditioning 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 coil pipe, outdoor coil temperature and outdoor are changed
The upper casing temperature of hot device；
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 coil pipe position of the indoor heat exchanger of air conditioner indoor unit is provided with one first temperature
Sensor, first temperature sensor can be used for detecting the real time temperature of its coil pipe position；Therefore, institute in step s101
The indoor coil pipe of acquisition can be the real time temperature by coil pipe position detected by first temperature sensor.
In the embodiments of the present disclosure, the temperature change of the coil pipe position of indoor heat exchanger is by the cold of inflow indoor heat exchanger
The temperature of matchmaker directly affects, thus can reflect from side air-conditioning to the situation of change of the heating capacity of indoor environment, by
It can change therewith in the heating capacity of the air-conditioning under different frosting situations, therefore indoor coil pipe is air-conditioner outdoor unit knot
Reference factor of the white situation to the influence of fading height of air-conditioning heating ability.
In an alternative embodiment, one second temperature is provided at the coil pipe position of the outdoor heat exchanger of air-conditioner outdoor unit
Sensor is spent, which can be used for detecting the real time temperature of its coil pipe position；Therefore, in step s101
Acquired outdoor coil temperature can be the real time temperature by coil pipe position detected by the second temperature sensor.
In the embodiments of the present disclosure, the temperature change of the coil pipe position of outdoor heat exchanger is can intuitively to reflect in outside
Outdoor environment temperature and internal refrigerant temperature joint effect under outdoor heat exchanger refrigerant pipeline temperature variations, separately
It is outside typically also the pipeline position that outdoor heat exchanger is easy to appear frosting problem；Therefore the outdoor coil temperature got can be made
To measure the reference factor that air-conditioning inside and outside influences the frosting that outdoor heat exchanger generates jointly.
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 coil pipe, outdoor coil temperature and upper casing temperature
Afterwards, control enters reverse cycle defrosting mode and executes to the refrigerant on the refrigerant outlet tube road for the outdoor heat exchanger for flowing through air-conditioning
First heating 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 is the indoor coil pipe of the indoor unit acquired in step S101, room
Whether outer coil temperature and these three parameters of upper casing temperature are to meeting defrosting entry condition and judge；Among these, indoor disk
Tube temperature degree is able to reflect the attenuation degree of its heating performance under the influence of air-conditioning frosting, outdoor coil temperature and upper casing temperature energy
The temperature variations of enough more sensitive different location refrigerant pipelines for reflecting outdoor heat exchanger, in this way, the disclosure is implemented
Example combines above-mentioned three kinds of factor parameters and is judged with the presence or absence of frosting problem air-conditioning jointly, can be greatly improved to air-conditioning
The judgement precision of defrosting, 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:
Tp- T1≤△ T1, T2-Te>=△ T2, TUpper housing max-TUpper housing>=△ T3,
And TLiquid out-TUpper housing≤△T4；
Wherein, TpFor indoor coil pipe, TeFor outdoor coil temperature, T1 is initial indoor coil temperature when air-conditioning is switched on
Degree, T2 are initial outdoor coil temperature when air-conditioning is switched on, TUpper housing maxFor the outdoor heat exchange recorded after this booting operation of air-conditioning
The upper housing temperature maximum of device, TUpper housingFor the upper casing temperature of outdoor heat exchanger, TLiquid outTo flow through outdoor heat exchanger in heating mould
The refrigerant of the refrigerant on the refrigerant outlet tube road under formula goes out liquid temperature, and △ T1 is preset first temperature difference threshold, and △ T2 is preset
Second temperature difference threshold, △ T3 are preset third temperature difference threshold, and △ T4 is preset 4th temperature difference threshold.
In the defrosting entry condition, the temperature gap between indoor coil pipe and initial indoor coil pipe is able to reflect
Heating capacity after air-conditioning booting is strong and weak.For example, air-conditioning heating ability decline, air-conditioning is opened in air-conditioning there are in the case where frosting
The ascensional range of indoor coil pipe is limited after machine, thus the obtained indoor coil pipe of detection and initial indoor coil pipe it
Between difference it is smaller；And the air-conditioning non-frosting the case where, air-conditioning heating ability is normal, and indoor coil pipe is upper after air-conditioning booting
Increasing degree degree is larger, therefore the difference detected between obtained indoor coil pipe and initial indoor coil pipe is larger.
And the temperature gap between outdoor coil temperature and initial outdoor coil temperature can embody air-conditioning internal and external environment
The situation of change of outdoor coil pipe used own temperature under joint effect；In general, outdoor environment operating condition is good, air-conditioning heating is normally transported
When row, therefore, outdoor coil temperature is limited compared to the variable quantity of initial outdoor coil temperature；And when outdoor environment becomes easy
Cause outdoor heat exchanger coagulate frost bad working environments when, then by outdoor environment temperature variation influenced, outdoor coil temperature decline compared with
Fastly, so that it can also generate biggish fluctuation compared to the variable quantity of initial outdoor coil temperature；In this way, the application's removes
One of white entry condition is to carry out defrosting judgement according to outdoor coil temperature under operating condition outside different chamber.
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.
It further include obtaining refrigerant to go out liquid temperature in step S101 meanwhile when setting this kind defrosting entry condition.
In an alternative embodiment, the outdoor unit of air-conditioning is additionally provided with one the 4th temperature sensor, the 4th temperature
Sensor can be used for detecting the real time temperature of the refrigerant on the refrigerant outlet tube road for flowing through outdoor heat exchanger；Therefore, in step S101
In acquired refrigerant outlet tube road can be the real time temperature of the refrigerant detected by the 4th temperature sensor；
Here, when refrigerant outlet tube road is run for air-conditioning with heating mode refrigerant outflow outdoor heat exchanger via pipe
Road.
In the embodiments of the present disclosure, the temperature for flowing out the refrigerant of outdoor heat exchanger is to can reflect out outdoor heat exchanger and room
The heat exchanger effectiveness of external environment, and heat exchanger effectiveness then will receive the influence of the frosting degree of outdoor heat exchanger；Here, in air-conditioning
Frosting degree is lower, in the case where frost thinner thickness, and influence of the frost to heat exchange is smaller, cold after flowing through outdoor heat exchanger
The heat that matchmaker is absorbed is more；And in the case where air-conditioning frosting degree is higher, frost thickness is thicker, shadow of the frost to heat exchange
Sound is larger, and the heat that the refrigerant after flowing through outdoor heat exchanger is absorbed is less.Therefore the refrigerant that acquires go out liquid temperature can be with
Reference factor as the frosting degree for measuring air-conditioning heat exchanger.
In addition, when air-conditioning has frosting, due to the barrier of frost layer, between outdoor heat exchanger and outdoor environment
Heat exchanger effectiveness reduces, and refrigerant temperature is the principal element for influencing outdoor heat exchanger at this time, the shell especially in top
Temperature；Therefore when refrigerant go out the temperature gap between liquid temperature and upper casing temperature it is smaller when, then illustrate to change outside air conditioning chamber at this time
There may be frosting problems for hot device.
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 the upper casing according to indoor coil pipe, outdoor coil temperature and outdoor heat exchanger
After the determining satisfaction defrosting entry condition of temperature, the defrosting operation of air-conditioning includes controlling into reverse cycle defrosting mode and execution
To the first heating operation of the refrigerant on the refrigerant outlet tube road for the outdoor heat exchanger for flowing through air-conditioning.
Wherein, reverse cycle defrosting mode includes that the refrigerant flow direction of control air-conditioning is switched to the flow direction opposite with heating mode；
Under this kind of model process, the high temperature refrigerant of compressor discharge is first to flow through outdoor heat exchanger, so as to utilize high temperature refrigerant
Heat realize to the defrosting operation of outdoor heat exchanger.
Meanwhile under inverse circulation pattern, the refrigerant outlet tube road under heating mode is substantially to become " refrigerant inlet tube
Road ", i.e., at this time refrigerant via under refrigeration mode refrigerant outlet tube road flow into outdoor heat exchanger；Therefore, by flowing through refrigerant
The heating of the refrigerant on outlet tube road can be further improved the refrigerant temperature for flowing into indoor heat exchanger, actual so as to enhance
Defrosting effect.
Optionally, it is provided with a heating device at the refrigerant outlet tube road of outdoor heat exchanger, which is arranged to
Controllably the refrigerant for flowing through refrigerant outlet tube road is heated.
Therefore in step s 102, in the upper casing according to indoor coil pipe, outdoor coil temperature and outdoor heat exchanger
Temperature determines meet defrosting entry condition after, can control operation reverse cycle defrosting mode and open the heating device and execute the
One heating operation；And it is determined not according to the upper casing temperature of indoor coil pipe, outdoor coil temperature and outdoor heat exchanger
In the case where meeting defrosting entry condition, then keeps heating mode constant and keep the closed state of the heating device.
In one embodiment, heating device is electromagnetic heater, and electromagnetic heater utilizes electromagnetic induction heating
Principle heats refrigerant pipeline, and then the refrigerant for flowing through refrigerant pipeline is conducted heat to using refrigerant pipeline, cold to reach heating
The purpose of matchmaker.
Here, the corresponding refrigerant pipe section heated of electromagnetic heater is the pipeline section of the metal materials such as copper or irony,
Electromagnetic heater is mainly made of induction coil and power supply module, and induction coil is wound in above-mentioned refrigerant pipeline here
Section, power supply module can provide alternating current for induction coil；When induction coil is powered, the alternating current of induction coil is flowed through
The alternating magnetic field for passing through refrigerant pipe section is generated, which can make refrigerant inner tube segment generate vortex, so as to rely on
The energy of these vortex plays the role of heat temperature raising.
It is filled it should be understood that the type for the heating device that the application is used to heat refrigerant is not limited to above-mentioned electromagnetic heating
It sets, the other types of heating device that can be used in directly or indirectly heating refrigerant can also be using the application's in the related technology
Technical solution, and cover within the scope of protection of this application.
In an alternative embodiment, in step S102 in first heating operation of the control to refrigerant outlet tube road,
The heating operation of the first heating operation can be determined according to temperature gap, and first heating is then executed according to heating operation and is grasped
Make.
Among these, temperature gap includes: the first temperature gap between initial outdoor coil temperature and outdoor coil temperature,
Second temperature difference between upper housing temperature maximum and upper casing temperature, or, refrigerant go out liquid temperature and upper casing temperature it
Between third temperature gap；Heating parameters include the rate of heat addition or heating duration of the first heating operation.
In technology contents above, the first temperature gap, second temperature difference and third temperature gap are also hereinbefore
One of the sub- condition for the entry condition that defrosts；It, can be according to first when therefore determining satisfaction defrosting entry condition in step s 102
Temperature gap, second temperature difference and third temperature gap speculate influence of the outdoor heat exchanger frosting to air-conditioning heating performance, into
And according to the selection of the Different Effects of heating performance to the rate of heat addition and heating duration of the refrigerant for flowing through refrigerant outlet tube road, with full
The heating performance of sufficient air-conditioning needs.
For example, larger to air-conditioning heating performance degradation, then setting is to refrigerant when the frosting degree of outdoor heat exchanger is higher
The rate of heat addition it is very fast, to improve the heat temperature raising speed to the refrigerant of outflow, suction temperature requirement can be met as early as possible；
And setting is longer to the heating duration of refrigerant, stream can be heated for a long time under outdoor heat exchanger frosting serious situation
Out outdoor heat exchanger, flow back to the refrigerant of compressor；Conversely, then setting is to refrigerant when the frosting degree of outdoor heat exchanger is lower
The rate of heat addition it is lower, heating duration it is shorter, with reduce first heater operation power consumption, reduce the use cost of air-conditioning.
Optionally, the rate of heat addition to the refrigerant for flowing through refrigerant outlet tube road is determined according to temperature gap, comprising: according to the
One temperature gap obtains corresponding first rate of heat addition from first rate incidence relation, to carry out according to first rate of heat addition
Heating.
According to the first temperature gap, corresponding first rate of heat addition is obtained from first rate incidence relation, according to
One rate of heat addition is heated.
It here, include that one or more first temperature gaps are corresponding with first rate of heat addition in first rate incidence relation
Relationship.Here, the corresponding relationship of a kind of optional first temperature gap and first rate of heat addition is shown in table 1, such as following table institute
Show,
| First temperature gap (unit: DEG C) | First rate of heat addition (unit: DEG C/min) |
| A1 < T2-Te≤a2 | v11 |
| A2 < T2-Te≤a3 | v12 |
| A3 < T2-Te | v13 |
Table 1
In first rate incidence relation, first rate of heat addition and the first temperature gap are to be positively correlated.That is the first temperature gap
Bigger, then first rate of heat addition is higher；And the first temperature gap is smaller, then first rate of heat addition is lower.
It therefore, can first basis when in executing step S102 to the heating operation for the refrigerant for flowing through refrigerant outlet tube road
The first rate incidence relation determines corresponding first rate of heat addition of the first temperature gap, is then carried out according to first rate of heat addition
Heating.
It is another optional, the rate of heat addition to the refrigerant for flowing through refrigerant outlet tube road is determined according to temperature gap, comprising: root
According to second temperature difference, corresponding second rate of heat addition is obtained from the second rate incidence relation, according to second rate of heat addition
It is heated.
It here, include that one or more second temperature differences are corresponding with second rate of heat addition in the second rate incidence relation
Relationship.Here, the corresponding relationship of a kind of optional second temperature difference and second rate of heat addition is shown in table 2, such as following table institute
Show,
| Second temperature difference (unit: DEG C) | Second rate of heat addition (unit: DEG C/min) |
| B1 < TUpper housing max-TUpper housing≤b2 | v21 |
| B2 < TUpper housing max-TUpper housing≤b3 | v22 |
| B3 < TUpper housing max-TUpper housing | v23 |
Table 2
In second rate incidence relation, second rate of heat addition and second temperature difference are to be positively correlated.That is second temperature difference
Bigger, then second rate of heat addition is higher；And second temperature difference is smaller, then second rate of heat addition is lower.
It therefore, can first basis when in executing step S102 to the heating operation for the refrigerant for flowing through refrigerant outlet tube road
The second rate incidence relation determines corresponding second rate of heat addition of second temperature difference, is then carried out according to second rate of heat addition
Heating.
It is another optional, the rate of heat addition to the refrigerant for flowing through refrigerant outlet tube road is determined according to temperature gap, comprising: root
According to third temperature gap, the corresponding third rate of heat addition is obtained from third speed incidence relation, according to the third rate of heat addition
It is heated.
It here, include that one or more third temperature gaps are corresponding with the third rate of heat addition in third speed incidence relation
Relationship.Here, the corresponding relationship of a kind of optional third temperature gap and the third rate of heat addition is shown in table 3, such as following table institute
Show,
| Third temperature gap (unit: DEG C) | The third rate of heat addition (unit: DEG C/min) |
| C1 < TLiquid out-TUpper housing≤c2 | v31 |
| C2 < TLiquid out-TUpper housing≤c3 | v32 |
| C3 < TLiquid out-TUpper housing | v33 |
Table 3
In third speed incidence relation, the third rate of heat addition and third temperature gap are negative correlation.That is third temperature gap
Bigger, then the third rate of heat addition is lower；And third temperature gap is smaller, then the third rate of heat addition is higher.
It therefore, can first basis when in executing step S102 to the heating operation for the refrigerant for flowing through refrigerant outlet tube road
The third speed incidence relation determines the corresponding third rate of heat addition of third temperature gap, is then carried out according to the third rate of heat addition
Heating.
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 amplitude difference is influenced on the temperature change of the first temperature gap, second temperature difference and third temperature gap, therefore
The application is to be each provided with an individual incidence relation, and air-conditioning can select according to actual needs one of incidence relation true
The fixed corresponding rate of heat addition.
Optionally, the rate incidence relation specifically selected can be determined according to the heating needs of active user, for example, working as
When the heating needs of preceding user are lower, then first rate incidence relation and the second rate incidence relation are selected, mainly examined at this time
Upper casing temperature corresponding to outdoor coil temperature corresponding to the first temperature gap and second temperature difference is considered to defrosting
The influence of effect；And when the heating needs of active user are higher, then the second rate incidence relation is selected, is mainly considered at this time
Go out the big of the influence of outdoor heat exchanger frosting suffered by liquid temperature to the refrigerant for being able to reflect the refrigerant temperature height for being back to compressor
It is small, so that refrigerant also can be improved refrigerant suction temperature after heating, to guarantee heating performance.
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 that user can also be taken into account when executing the defrosting heated to refrigerant and operating needs
It asks, to fully ensure that air-conditioning during defrosting to the control requirement of users'comfort.
It similarly, in some alternative embodiments, can also be according to the first temperature gap, from the first duration incidence relation
Corresponding first heating duration is obtained, to be heated according to the first heating duration.
Here, in the first duration incidence relation, the first heating duration and the first temperature gap are to be positively correlated.
Alternatively, obtaining corresponding second heating duration, from the second duration incidence relation according to second temperature difference to press
It is heated according to the second heating duration.
Here, in the second duration incidence relation, the second heating duration and second temperature difference are to be positively correlated.
Or according to third temperature gap, corresponding third heating duration is obtained from third duration incidence relation, with
It is heated according to third heating duration.
Here, in third duration incidence relation, third heats duration and third temperature gap is negative correlation.
In the above-described embodiments, it is referred to according to the mode that temperature gap obtains heating duration above-mentioned according to temperature difference
Value obtains the control flow of the rate of heat addition, and therefore not to repeat here.
In some alternative embodiments, in order to the heating performance of air-conditioning, this Shen can be promoted as early as possible when air-conditioning is switched on
Please control method the step of further include: after air-conditioning is switched on heating mode, control execute to the outdoor heat exchanger for flowing through air-conditioning
Refrigerant outlet tube road refrigerant the second heating operation.
At this point, refrigerant flows out outdoor heat exchanger via refrigerant outlet tube road, and it is back to compressor, therefore, the second heating
Operation can be improved the suction temperature for the refrigerant for being back to compressor, to improve air-conditioning in the heating performance of start-up phase.
Optionally, the application is after control executes the second heating operation, further includes: obtains the return air temperature of the compressor of air-conditioning
Degree；When the suction temperature of compressor meets preset temperature condition, control stops the second heating operation.
In the present embodiment, the air return end of compressor of air conditioner is additionally provided with a temperature sensor, and the temperature sensor is available
Refrigerant temperature in detection stream cooled via return air end；Therefore the refrigerant temperature that real-time detection arrives can be obtained by the temperature sensor,
And as judging the suction temperature of temperature condition.
In an alternative embodiment, temperature condition includes: that suction temperature is greater than or equal to preset suction temperature threshold
Value.
Here, in the case where suction temperature is greater than or equal to preset suction temperature threshold value, illustrate the system of air-conditioning at this time
Hot property can control can satisfy current heating needs and stop the second heating operation, guarantee that air-conditioning heating need in this way
In the case where asking, it is possible to reduce the power consumption of the second heating operation；And it is less than the feelings of preset suction temperature threshold value in suction temperature
Under condition, illustrate that the heating performance of air-conditioning at this time not yet meets current heating needs, therefore keep the second heating operation constant.
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, control open the second heating operation of heating device；
In the embodiments of the present disclosure, heating device is set to the refrigerant outlet tube road of outdoor heat exchanger under heating mode,
It is configured as heating the refrigerant for flowing through the refrigerant outlet tube road.
Optionally, air-conditioning is preset with the configuration informations such as the rate of heat addition of the second heating operation, therefore in step S202, empty
Tune can call preset configuration information, and control according to configuration information and execute the second heating operation；
S203, the suction temperature for obtaining compressor；
S204, judge whether TReturn-air≥TReturn-air threshold value, if so, S205 is thened follow the steps, if it is not, then returning to step
S203；
S205, stop executing the second heating operation；
S206, the indoor coil pipe T for detecting indoor unitp, outdoor coil temperature TeAnd the upper casing body temperature of outdoor heat exchanger
Spend TUpper housing；
S207, detection refrigerant feed liquor temperature TFeed liquorGo out liquid temperature T with refrigerantLiquid out；
S208, judge whether Tp- T1≤△ T1, T2-Te>=△ T2, TUpper housing max-TUpper housing>=△ T3, and TLiquid out-TUpper housing≤△
T4, if so, S209 is thened follow the steps, if it is not, then returning to step S206；
In the embodiments of the present disclosure, Tp- T1≤△ T1, T2-Te>=△ T2, TUpper housing max-TUpper housing>=△ T3, and TLiquid out-TUpper housing
≤ △ T4 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 S208, 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.
S209, according to T2-Te, corresponding first rate of heat addition is obtained from first rate incidence relation；
S210, according to T2-Te, corresponding first heating duration is obtained from the first duration incidence relation；
S211, control enter reverse cycle defrosting mode, and open and add according to first rate of heat addition and the first heating duration
Thermal；
Optionally, heating device is electromagnetic heater, therefore can be by changing electricity to the adjusting of first rate of heat addition
The parameters such as the operating current or voltage of magnetic heating device are realized.
The control method for air-conditioner defrosting that the embodiment of the present disclosure provides can be according to the indoor coil temperature acquired
Whether the parametric synthesis such as degree, outdoor coil temperature and upper casing temperature meet the judgement of defrosting entry condition to air-conditioning, so as to
To effectively improve the control precision to control air-conditioner defrosting；And utilize high temperature refrigerant to outdoor heat exchange by reverse cycle defrosting mode
Device defrosting, and further increase to flow down against circulation pattern by way of heating the refrigerant for flowing through refrigerant outlet tube road and enter the room
The refrigerant temperature of external heat exchanger can effectively improve the defrosting efficiency to outdoor heat exchanger, accelerate to reduce frost condensation to air-conditioning
The adverse effect of itself heating performance.
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.
Fig. 4 is the structural schematic diagram for the air-conditioning that the embodiment of the present disclosure provides.
As shown in figure 4, disclosure implementation additionally provides a kind of air-conditioning, comprising:
Refrigerant circulation circuit passes through refrigerant by outdoor heat exchanger 41, indoor heat exchanger 42, throttling set 43 and compressor 44
Piping connection is constituted；
Heating device 45 is set to the refrigerant outlet tube road of outdoor heat exchanger 41 in a heating mode, is configured as pair
The refrigerant for flowing through refrigerant outlet tube road is heated；
For the control device 46 of air-conditioner defrosting, it is electrically connected with heating device 45.Here, the control for being used for air-conditioner defrosting
Device 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 heating device, to reduce
The frost amount condensed on outdoor heat exchanger of air conditioner 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, indoor coil pipe, outdoor coil temperature and outdoor heat exchanger are obtained
Upper casing temperature；
Determining that meeting defrosting enters item according to the indoor coil pipe, the outdoor coil temperature and the upper casing temperature
After part, control enters reverse cycle defrosting mode and executes to the refrigerant outlet tube road for the outdoor heat exchanger for flowing through the air-conditioning
First heating operation of refrigerant.
2. control method according to claim 1, which is characterized in that the defrosting entry condition includes:
Tp- T1≤△ T1, T2-Te>=△ T2, TUpper housing max-TUpper housing>=△ T3,
And TLiquid out-TUpper housing≤△T4；
Wherein, the TpFor the indoor coil pipe, the TeFor the outdoor coil temperature, when T1 is that the air-conditioning is switched on
Initial indoor coil pipe, T2 be the air-conditioning be switched on when initial outdoor coil temperature, TUpper housing maxFor the air-conditioning this
The upper housing temperature maximum of the outdoor heat exchanger recorded after booting operation, TUpper housingFor the upper casing body temperature of the outdoor heat exchanger
Degree, the TLiquid outGo out liquid temperature to flow through the refrigerant of the refrigerant on the refrigerant outlet tube road of the outdoor heat exchanger in a heating mode,
△ T1 is preset first temperature difference threshold, and △ T2 is preset second temperature difference threshold, and △ T3 is preset third temperature difference threshold, △
T4 is preset 4th temperature difference threshold.
3. control method according to claim 2, which is characterized in that the first heating operation heats parameter is according to temperature
Difference determines；
Wherein, the temperature gap includes: the first temperature between the initial outdoor coil temperature and the outdoor coil temperature
Spend difference, the second temperature difference between the upper housing temperature maximum and the upper casing temperature, or, the refrigerant goes out liquid
Third temperature gap between temperature and the upper casing temperature；
The heating parameters include the rate of heat addition and/or heating duration of first heating operation.
4. control method according to claim 3, which is characterized in that determine first heating operation according to temperature gap
The rate of heat addition, comprising:
According to first temperature gap, corresponding first rate of heat addition is obtained from first rate incidence relation, according to institute
It states first rate of heat addition and executes the first heating operation；Or,
According to the second temperature difference, corresponding second rate of heat addition is obtained from the second rate incidence relation, according to institute
It states second rate of heat addition and executes the first heating operation；Or,
According to the third temperature gap, the corresponding third rate of heat addition is obtained from third speed incidence relation, according to institute
It states the third rate of heat addition and executes the first heating operation.
5. control method according to claim 3, which is characterized in that determine first heating operation according to temperature gap
The heating duration, comprising:
According to first temperature gap, corresponding first heating duration is obtained from the first duration incidence relation, according to institute
It states the first heating duration and executes the first heating operation；Or,
According to the second temperature difference, corresponding second heating duration is obtained from the second duration incidence relation, according to institute
It states the second heating duration and executes the first heating operation；Or,
According to the third temperature gap, corresponding third heating duration is obtained from third duration incidence relation, according to institute
It states third heating duration and executes the first heating operation.
6. control method according to claim 3, which is characterized in that the heating parameters of first heating operation with it is described
First temperature gap is to be positively correlated；
The heating parameters of first heating operation and the second temperature difference are to be positively correlated；
The heating parameters of first heating operation and the third temperature gap are negative correlation.
7. control method according to any one of claims 1 to 6, which is characterized in that further include:
After the air-conditioning is with heating mode booting, control executes the refrigerant for the outdoor heat exchanger for flowing through the air-conditioning
Second heating operation of the refrigerant of liquid pipeline.
8. control method according to claim 7, which is characterized in that after control executes the second heating operation, further includes:
Obtain the suction temperature of the compressor of the air-conditioning；
When the suction temperature of the compressor meets preset temperature condition, control stops second heating operation；
Wherein, the temperature condition includes: that suction temperature is greater than or equal to preset suction temperature threshold value.
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；
Heating device is set to the outdoor heat exchanger on the refrigerant outlet tube road under the heating mode, is configured as pair
The refrigerant for flowing through refrigerant outlet tube road is heated；
The control device as claimed in claim 9 for being used for air-conditioner defrosting, is electrically connected with the heating device.
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| CN110940136A (en) * | 2019-12-10 | 2020-03-31 | 珠海格力电器股份有限公司 | Refrigerator refrigerating system and defrosting control method thereof |
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