CN110470014A - Control method and device, air-conditioning for air-conditioner defrosting - Google Patents
Control method and device, air-conditioning for air-conditioner defrosting Download PDFInfo
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- CN110470014A CN110470014A CN201910714254.2A CN201910714254A CN110470014A CN 110470014 A CN110470014 A CN 110470014A CN 201910714254 A CN201910714254 A CN 201910714254A CN 110470014 A CN110470014 A CN 110470014A
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- 238000010257 thawing Methods 0.000 title claims abstract description 100
- 238000004378 air conditioning Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 52
- 239000003507 refrigerant Substances 0.000 claims abstract description 112
- 230000009467 reduction Effects 0.000 claims description 75
- 230000036760 body temperature Effects 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 description 21
- 238000010586 diagram Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 238000004891 communication Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 238000004590 computer program Methods 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000009916 joint effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- 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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- 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
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Combustion & Propulsion (AREA)
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- Signal Processing (AREA)
- Fluid Mechanics (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: in the case where air-conditioning is defrosted, and control reduces the running speed of outdoor fan and/or indoor fan;Obtain the refrigerant feed liquor temperature gap of outdoor heat exchanger and the predeterminated position temperature of outdoor heat exchanger;In the case where refrigerant feed liquor temperature gap meets the first defrosting exit criteria and predeterminated position temperature meets the second defrosting exit criteria, control stops reducing the running speed of outdoor fan and/or indoor fan.Judge that air-conditioning exits the opportunity of defrosting using the refrigerant feed liquor temperature gap and predeterminated position temperature of outdoor heat exchanger, improves the control precision for exiting defrosting to control air-conditioning;And change the heat exchange rate of corresponding heat exchanger and external environment by the adjustment of the revolving speed to indoor fan and outdoor fan, reducing temperature environment influences the aggravation of solidifying white degree.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 a kind of control method and device for air-conditioner defrosting,
Air-conditioning.
Background technique
Currently, the mainstream model of air-conditioning is mostly the heat exchange function for having cooling and warming 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:
Since the Defrost mode of above-mentioned several pairs of outdoor heat exchangers more or less all can be to the normal heating performance structure of air-conditioning
At influence, therefore air-conditioning will do it judgement before exiting defrosting, and then control whether air-conditioning exits defrosting according to judging result.
In the related technology, it removes generally by judging whether to exit to the mode compared with numerical value between outdoor environment temperature and frost point temperature
Frost.Since the solidifying white situation of outdoor heat exchanger can be influenced by many factors such as outdoor environment and self-operating state simultaneously,
Therefore the above-mentioned judgment mode for whether exiting defrosting mode is excessively rough, is easy to make air-conditioning exit defrosting mode in advance and cause to remove
Frost is not thorough, alternatively, after the completion of defrosting continuous service defrosting mode and influence the normal heating performance of air-conditioning.
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 provides a kind of control method and device for air-conditioner defrosting, air-conditioning, to solve related skill
The judgment mode that defrosting mode whether is exited in art is excessively rough, is easy to make air-conditioning exit defrosting mode in advance and cause defrosting not
Thoroughly, alternatively, after the completion of defrosting continuous service defrosting mode and the technical issues of influence air-conditioning normal heating performance.
In some embodiments, the control method for air-conditioner defrosting includes:
In the case where air-conditioning is defrosted, control reduces the operation of the outdoor fan and/or indoor fan of air-conditioning
Revolving speed;
Obtain the refrigerant feed liquor temperature gap of outdoor heat exchanger and the predeterminated position temperature of outdoor heat exchanger;
Meet the first defrosting exit criteria in refrigerant feed liquor temperature gap and predeterminated position temperature meets the second defrosting and exits
In the case where condition, control stops reducing the running speed of outdoor fan and/or indoor fan.
In some embodiments, the control device for air-conditioner defrosting includes processor and is stored with program instruction
Memory, processor are configured as when executing program instructions, and execute the above-mentioned control method for air-conditioner defrosting.
In some embodiments, the air-conditioning includes:
Refrigerant circulation circuit is connected by outdoor heat exchanger, indoor heat exchanger, throttling set and compressor by refrigerant pipeline
It constitutes;
Indoor fan, is configured as driving indoor air flow and indoor heat exchanger carries out heat exchange;
Outdoor fan, is configured as driving outdoor airflow and outdoor heat exchanger carries out heat exchange;
The above-mentioned control device for air-conditioner defrosting, is electrically connected with indoor fan, outdoor fan.
The control method and device for air-conditioner defrosting of embodiment of the present disclosure offer, air-conditioning, may be implemented following technology
Effect:
Air-conditioning utilizes the refrigerant feed liquor temperature gap and predeterminated position temperature of outdoor heat exchanger during Defrost operation
These parametric synthesis judge that air-conditioning exits the opportunity of defrosting, so as to effectively improve the control for exiting defrosting to control air-conditioning
Precision avoids air-conditioning from exiting defrosting mode in advance and defrosting is caused to be not thorough, alternatively, continuous service defrosting mould after the completion of defrosting
Formula and influence the normal heating performance of air-conditioning;And respectively by the adjustment operation change to indoor fan and the revolving speed of outdoor fan
The heat exchange rate of corresponding heat exchanger and external environment can either be realized for the refrigerant temperature and pressure in refrigerant circulation circuit
Adjustment, enable to finally flow into outdoor heat exchanger and carry out the refrigerant of defrost and reach preferable defrosting effect, while can also change
Temperature environment around kind outdoor heat exchanger, the aggravation for reducing temperature environment white degree solidifying on outdoor heat exchanger influence.
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 embodiment of the present 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.
A kind of control method for air-conditioner defrosting is provided in the embodiment of the present disclosure, as shown in Figure 1, including following step
It is rapid:
S101: in the case where air-conditioning is defrosted, the outdoor fan and/or indoor fan for reducing air-conditioning are controlled
Running speed.
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.
Optionally, judge by way of compared with numerical value between outdoor environment temperature and frost point temperature air-conditioning whether need into
Row defrosting.When outdoor environment temperature is lower than frost point temperature, then it is assumed that air-conditioning defrosts;When outdoor environment temperature is higher than
When frost point temperature, then it is assumed that air-conditioning is without defrosting.
By adjusting one or two of outdoor fan and indoor fan to corresponding Defrost operation revolving speed, can change
The heat exchange rate of the corresponding heat exchanger Shi Yuqi ambient enviroment of refrigerant, and then reach the mesh using the defrosting defrost of refrigerant self heat
's.
S102: the refrigerant feed liquor temperature gap of outdoor heat exchanger and the predeterminated position temperature of outdoor heat exchanger are obtained.
Real-time refrigerant feed liquor temperature and initial refrigerant of the refrigerant feed liquor temperature gap of outdoor heat exchanger for outdoor heat exchanger
The temperature gap of feed liquor temperature.Wherein, real-time refrigerant feed liquor temperature is to the cold of the refrigerant inlet pipe for flowing through outdoor heat exchanger
Matchmaker heats the refrigerant feed liquor temperature of the outdoor heat exchanger after preset time;Initial refrigerant feed liquor temperature, which is starting, changes to flowing through outdoor
The refrigerant feed liquor temperature of outdoor heat exchanger when the refrigerant heating of the refrigerant inlet pipe of hot device.
Optionally, air-conditioner outdoor unit is provided with the first temperature sensor, which can be used for detection stream
The real time temperature of the refrigerant of refrigerant inlet pipe through outdoor heat exchanger.Therefore, acquired refrigerant feed liquor in step s 102
Temperature can be the real time temperature of the refrigerant detected by first temperature sensor.Here, refrigerant inlet pipe is
When air-conditioning is run with heating mode refrigerant flow into outdoor heat exchanger via pipeline.
Sequence of flow of the refrigerant that compressor is discharged under heating mode in refrigerant circulation circuit are as follows: first flow through indoor heat exchange
Device flows through throttling set later and throttles, then flows into outdoor heat exchanger, finally flows back to compressor.The refrigerant flows into outdoor and changes
Before hot device, the temperature of refrigerant is indoors under the joint effect of the throttling action of the heat transfer process and throttling set of heat exchanger,
Refrigerant temperature gradually decreases;And under different outdoor working conditions, it is clear that flowed into the temperature of the refrigerant of outdoor heat exchanger also
It is different.For example, when there is frosting in air-conditioning, the case where temperature of the refrigerant of compressor discharge will be lower than non-frosting, simultaneously
Indoor environment is influenced by outdoor adverse circumstances, and it is more that refrigerant flows through the heat discharged after indoor heat exchanger, therefore, is finally flowed into
The temperature of the refrigerant of outdoor heat exchanger is relatively low numerical value, therefore refrigerant feed liquor temperature can reflect air-conditioning from side
Frosting situation.Refrigerant feed liquor temperature gap is smaller, illustrates that the frosting situation of outdoor heat exchanger is more serious;The refrigerant feed liquor temperature difference is got over
Greatly, illustrate that the defrosting of outdoor heat exchanger is more thorough.
Optionally, predeterminated position temperature includes the outdoor coil temperature of outdoor heat exchanger or the upper body of outdoor heat exchanger
Temperature.
Optionally, the coil pipe position of the outdoor heat exchanger of air-conditioner outdoor unit is provided with a second temperature sensor, this
Two temperature sensors can be used for detecting the real time temperature of coil pipe position.Therefore, acquired outdoor coil pipe used temperature in step s 102
Degree can be the real time temperature by coil pipe position detected by second temperature sensor.
The temperature change of the coil pipe position of outdoor heat exchanger can intuitively reflect in external outdoor environment temperature and interior
The temperature variations of the refrigerant pipeline of outdoor heat exchanger, are in addition typically also outdoor heat exchange under the refrigerant temperature joint effect in portion
Device is easy to appear the pipeline position of frosting problem.Therefore the outdoor coil temperature got, which can be used as, measures air-conditioning inside and outside pair
The reference factor that the frosting that outdoor heat exchanger generates jointly influences.
Optionally, the outdoor heat exchanger of air-conditioner outdoor unit is provided with a third temperature sensor, the third temperature sensing
Device can be used for detecting the upper body temperature of outdoor heat exchanger.Therefore, acquired upper body temperature can in step s 102
To be the real time temperature detected by the third temperature sensor.
The refrigerant inlet pipe of outdoor heat exchanger is set to lower part, and refrigerant goes out liquid and is set to top, therefore in heating mode
Lower refrigerant flows into outdoor heat exchanger from below, and flows out outdoor heat exchanger from top.Therefore upper casing temperature is by having flowed through room
Most of pipeline of external heat exchanger is simultaneously influenced with the temperature of the refrigerant after outdoor environment heat exchange, is able to reflect out in difference
The heat exchanger effectiveness of refrigerant under frosting situation.Under the situation of the non-frosting of air-conditioning, refrigerant absorb heat from outdoor environment it is more, therefore
The temperature for the upper body being affected by it is also higher;And in air-conditioning there are in the case where frosting, refrigerant absorbs heat from outdoor environment
It is less, therefore upper casing temperature is relatively low.In this way, room of the upper casing temperature of outdoor heat exchanger compared to outdoor heat exchanger lower part
Outer coil temperature more can accurately reflect the frosting degree of outdoor heat exchanger.
S103: meet the first defrosting exit criteria in refrigerant feed liquor temperature gap and predeterminated position temperature meets the second defrosting
In the case where exit criteria, control stops reducing the running speed of outdoor fan and/or indoor fan.
Optionally, the first defrosting exit criteria are as follows:
ΔT1≥ΔT01
Second defrosting exit criteria are as follows:
T2≥T02, and t2≥t02
Wherein, Δ T1For the refrigerant feed liquor temperature gap of outdoor heat exchanger, Δ T01For fiducial temperature threshold value, T2It is changed for outdoor
The predeterminated position temperature of hot device, T02For preset temperature, t2For T2≥T02Duration, t02For preset duration.
Optionally, Δ T01Value range be [4 DEG C, 7 DEG C], such as 4 DEG C, 5 DEG C, 6 DEG C, 7 DEG C.
Optionally, in the case where predeterminated position temperature is the outdoor coil temperature of outdoor heat exchanger, preset temperature (first
Preset temperature) be prestore detected in air-conditioner defrosting test process outdoor heat exchanger defrosting after the completion of outdoor coil pipe used temperature
The correction temperature of degree.After the completion of outdoor heat exchanger defrosting, outdoor coil temperature can occur centainly due to white water evaporation etc.
Fluctuation.Therefore outdoor coil temperature after the completion of defrosting to the outdoor heat exchanger that is detected in air-conditioner defrosting test process into
Row correction, improves the accuracy of defrosting exit criteria.
First preset temperature can be calculated by the following formula to obtain:
T021=* T001
Wherein, T021For the first preset temperature, α is the first proportionality coefficient, T001To be detected in air-conditioner defrosting test process
Outdoor coil temperature after the completion of the outdoor heat exchanger defrosting arrived.The value range of α be [1.1,1.3], for example, 1.1,1.15,
1.2、1.25、1.3。
Optionally, in the case where predeterminated position temperature is the upper body temperature of outdoor heat exchanger, preset temperature (second
Preset temperature) be prestore detected in air-conditioner defrosting test process outdoor heat exchanger defrosting after the completion of upper case body temperature
The correction temperature of degree.After the completion of outdoor heat exchanger defrosting, upper part case temperature can occur centainly due to white water evaporation etc.
Fluctuation.Therefore upper body temperature after the completion of defrosting to the outdoor heat exchanger that is detected in air-conditioner defrosting test process into
Row correction, improves the accuracy of defrosting exit criteria.
Second preset temperature can be calculated by the following formula to obtain:
T022=* T002
Wherein, T022For the second preset temperature, δ is the second proportionality coefficient, T002To be detected in air-conditioner defrosting test process
Upper body temperature after the completion of the outdoor heat exchanger defrosting arrived.The value range of δ be [1.1,1.3], for example, 1.1,1.15,
1.2、1.25、1.3。
In the defrosting exit criteria, the refrigerant feed liquor temperature gap of outdoor heat exchanger is greater than fiducial temperature threshold value, can be with
Side reflects that the defrost of outdoor heat exchanger outer surface is completed;The predeterminated position temperature of outdoor heat exchanger is greater than preset temperature and continues
Duration is greater than preset duration, and the heating performance that can reflect out outdoor heat exchanger restores at least frost or frostless situation.It therefore, can be with
Stop heating the refrigerant of the refrigerant inlet pipe for the outdoor heat exchanger for flowing through air-conditioning, exits the Defrost operation mode of air-conditioning.
It optionally, include the outdoor coil temperature of outdoor heat exchanger and the upper case of outdoor heat exchanger in predeterminated position temperature
In the case where temperature, the second defrosting exit criteria are as follows:
T21≥T22> T02, t21≥t02
Wherein, T21For the outdoor coil temperature of outdoor heat exchanger, T21For the upper body temperature of outdoor heat exchanger, t21For
T21≥T22> T02Duration.
In the defrosting exit criteria, the Rule of judgment that outdoor coil temperature is greater than upper body temperature is also added.In
Under the situation of the non-frosting of air-conditioning, refrigerant absorbs heat more from outdoor environment, therefore the upper body temperature being affected by it is also higher,
Typically larger than outdoor coil temperature;And in air-conditioning there are in the case where frosting, refrigerant absorb heat from outdoor environment it is less, therefore on
Portion's case temperature is relatively low, usually less than outdoor coil temperature.Therefore, increase outdoor coil temperature and be greater than upper body temperature
Rule of judgment, defrosting exit criteria are more accurate.
Optionally, control reduces the running speed of outdoor fan and/or indoor fan, comprising:
Outdoor fan target reduction of speed value and/or indoor fan target reduction of speed value are obtained according to refrigerant feed liquor temperature gap;
Current running speed based on outdoor fan, control reduce the fortune of outdoor fan according to outdoor fan target reduction of speed value
Row revolving speed;And/or the current running speed based on indoor fan, control reduce indoor wind according to indoor fan target reduction of speed value
The running speed of machine.
The embodiment that above-mentioned control reduces the running speed of outdoor fan and/or indoor fan includes three kinds of situations:
The first: obtaining the first outdoor fan target reduction of speed value according to refrigerant feed liquor temperature gap;Based on outdoor fan
Current running speed, control reduce the running speed of outdoor fan according to the first outdoor fan target reduction of speed value.
Second: the first indoor fan target reduction of speed value is obtained according to refrigerant feed liquor temperature gap;Based on indoor fan
Current running speed, control reduce the running speed of indoor fan according to the first indoor fan target reduction of speed value.
The third: obtaining the first outdoor fan target reduction of speed value and the first indoor fan mesh according to refrigerant feed liquor temperature gap
Mark reduction of speed value;Current running speed based on outdoor fan, control reduce outdoor wind according to the first outdoor fan target reduction of speed value
The running speed of machine;And the current running speed based on indoor fan, control reduce according to the first indoor fan target reduction of speed value
The running speed of indoor fan.
Optionally, outdoor fan target reduction of speed value is obtained according to refrigerant feed liquor temperature gap and/or indoor fan target drops
Speed value, comprising:
According to refrigerant feed liquor temperature gap, obtained from reduction of speed value incidence relation corresponding outdoor fan reduction of speed value and/or
Indoor fan reduction of speed value;
Using outdoor fan reduction of speed value as outdoor fan target reduction of speed value, and/or, using indoor fan reduction of speed value as interior
Blower target reduction of speed value.
Refrigerant feed liquor temperature gap is smaller, then illustrates that the frosting degree of outdoor heat exchanger of air conditioner is more serious, set at this time
The reduction of speed value of internal outer blower is larger, accelerates defrost;Refrigerant feed liquor temperature gap is larger, then illustrates that heating capacity is preferable, air-conditioning
The frosting lesser extent of outdoor heat exchanger can suitably reduce the reduction of speed value of inside and outside blower, reduce inside and outside blower reduction of speed to air-conditioning
The influence of normal heating performance.Therefore, the target reduction of speed value of inside and outside blower can be determined according to refrigerant feed liquor temperature gap.
It is above-mentioned that outdoor fan target reduction of speed value and/or indoor fan target reduction of speed value are obtained according to refrigerant feed liquor temperature gap
Embodiment include three kinds of situations:
The first: according to refrigerant feed liquor temperature gap, obtaining corresponding outdoor fan reduction of speed from reduction of speed value incidence relation
Value;Using outdoor fan reduction of speed value as outdoor fan target reduction of speed value.
Second: according to refrigerant feed liquor temperature gap, corresponding indoor fan reduction of speed is obtained from reduction of speed value incidence relation
Value;Using indoor fan reduction of speed value as indoor fan target reduction of speed value.
The third: according to refrigerant feed liquor temperature gap, obtaining corresponding outdoor fan reduction of speed from reduction of speed value incidence relation
Value and indoor fan reduction of speed value;Make using outdoor fan reduction of speed value as outdoor fan target reduction of speed value and by indoor fan reduction of speed value
For indoor fan target reduction of speed value.
It include one or more refrigerant feed liquor temperature gaps and outdoor by taking the third situation as an example, in reduction of speed value incidence relation
The corresponding relationship of blower reduction of speed value, indoor fan reduction of speed value.For example, showing a kind of optional refrigerant feed liquor temperature difference in table 1
The corresponding relationship of value and outdoor fan reduction of speed value, indoor fan reduction of speed value:
Table 1: reduction of speed value incidence relation
In reduction of speed value incidence relation, refrigerant feed liquor temperature gap and outdoor fan reduction of speed value are negative correlation, refrigerant feed liquor temperature
It spends difference and indoor fan reduction of speed value is negative correlation.I.e. refrigerant feed liquor temperature gap is bigger, then outdoor fan reduction of speed value, indoor wind
Machine reduction of speed value is smaller;And refrigerant feed liquor temperature gap is smaller, then outdoor fan reduction of speed value, indoor fan reduction of speed value are bigger.
In some embodiments, it after reducing the outdoor fan of air-conditioning and/or the running speed of indoor fan in control, also wraps
It includes:
Control reduces the running frequency of compressor;And/or control increases the flow aperture of throttling set.
By the running frequency of the compressor of reduction air-conditioning, heat absorption rate of the refrigerant in outdoor heat exchanger can reduce,
And then the outdoor heat exchanger temperature caused by can weakening because of refrigerant heat absorption further decreases, the bad shadow that frosting degree aggravates
It rings, so that improving air-conditioning is executing removing for the defrosting operation heated to the refrigerant of refrigerant inlet pipe and refrigerant outlet tube road
White effect;By increasing the flow aperture of the throttling set of air-conditioning, the restriction effect of throttling set can be reduced, to flow through section
The refrigerant of stream device is able to maintain higher temperature, preferably removes so that the subsequent refrigerant for flowing into outdoor heat exchanger be made to can be realized
White effect.
Fig. 2 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides.
A kind of control method for air-conditioner defrosting is provided in the embodiment of the present disclosure, as shown in Fig. 2, including following step
It is rapid:
S201: judge whether air-conditioning defrosts.
S202: in the case where air-conditioning is defrosted, outdoor fan target is obtained according to refrigerant feed liquor temperature gap
Reduction of speed value and indoor fan target reduction of speed value.
S203: the current running speed based on outdoor fan, control reduce outdoor wind according to outdoor fan target reduction of speed value
The running speed of machine.
S204: the current running speed based on indoor fan, control reduce indoor wind according to indoor fan target reduction of speed value
The running speed of machine.
S205: control reduces the running frequency of compressor.
S206: control increases the flow aperture of throttling set.
S207: the refrigerant feed liquor temperature gap of outdoor heat exchanger and the predeterminated position temperature of outdoor heat exchanger are obtained.
S208: judge whether refrigerant feed liquor temperature gap and predeterminated position temperature meet defrosting exit criteria.
S209: in the case where refrigerant feed liquor temperature gap and predeterminated position temperature meet defrosting exit criteria, control stops
Only reduce the running speed of outdoor fan and indoor fan, stop reducing the running frequency of compressor and stop increasing throttling set
Flow aperture.
In the present embodiment, by adjusting the operating status of the compressor of air-conditioning, outdoor fan, indoor fan or throttling set
Improving defrosting effect also will affect the normal heating performance of air-conditioning.Therefore full in refrigerant feed liquor temperature gap and predeterminated position temperature
In the case where foot defrosting exit criteria, control stops adjusting the compressor of air-conditioning, outdoor fan, indoor fan or throttling set
Operating status and the operating status for restoring normal when heating, restore the normal heating performance of 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) 30 and memory (memory) 31 can also include communication interface
(Communication Interface) 32 and bus 33.Wherein, processor 30, communication interface 32, memory 31 can pass through
Bus 33 completes mutual communication.Communication interface 32 can be used for information transmission.Processor 30 can call in memory 31
Logical order, to execute the control method for air-conditioner defrosting of above-described embodiment.
In addition, the logical order in above-mentioned memory 31 can be realized and as only by way of SFU software functional unit
Vertical product when selling or using, can store in a computer readable storage medium.
Memory 31 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 30 is stored in memory 31 by operation
Program instruction/module be used for air-conditioning in realization above method embodiment thereby executing functional application and data processing
The control method of defrosting.
Memory 31 may include storing program area and storage data area, wherein storing program area can storage program area, extremely
Application program needed for a few function;Storage data area, which can be stored, uses created data etc. according to terminal device.This
Outside, memory 31 may include high-speed random access memory, can also include nonvolatile memory.
The embodiment of the present disclosure 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;
Indoor fan, is configured as driving indoor air flow and indoor heat exchanger carries out heat exchange;
Outdoor fan, is configured as driving outdoor airflow and outdoor heat exchanger carries out heat exchange;
The above-mentioned control device for air-conditioner defrosting, is electrically connected with indoor fan, outdoor fan.
The air-conditioning that the embodiment of the present disclosure provides, utilizes the refrigerant feed liquor temperature gap and predeterminated position temperature of outdoor heat exchanger
These parametric synthesis judge that air-conditioning exits the opportunity of defrosting, so as to effectively improve the control for exiting defrosting to control air-conditioning
Precision;And pass through the corresponding heat exchanger of adjustment operation change and external environment to indoor fan and the revolving speed of outdoor fan
Heat exchange rate, can either realize for the adjustment of refrigerant temperature and pressure in refrigerant circulation circuit, make to finally flow into outdoor
The refrigerant that heat exchanger carries out defrost can reach preferable defrosting effect, while can also improve the temperature around outdoor heat exchanger
Environment, the aggravation for reducing temperature environment white degree solidifying on outdoor heat exchanger influence.
The embodiment of the present disclosure provides a kind of computer readable storage medium, is stored with computer executable instructions, described
Computer executable instructions are arranged to carry out the above-mentioned control method for air-conditioner defrosting.
The embodiment of the present disclosure provides a kind of computer program product, and the computer program product includes being stored in calculating
Computer program on machine readable storage medium storing program for executing, the computer program include program instruction, when described program instruction is calculated
When machine executes, the computer is made to execute the above-mentioned control 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 a ...", it is not excluded that
There is also other identical elements in the process, method or equipment for including the element.Herein, each embodiment emphasis
What is illustrated can be the difference from other embodiments, and the same or similar parts in each embodiment can refer to each other.It is right
For the method disclosed in embodiment, product etc., if it is corresponding with method part disclosed in embodiment, related place
It may refer 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 case where air-conditioning is defrosted, control reduces the operation of the outdoor fan and/or indoor fan of the air-conditioning
Revolving speed;
Obtain the refrigerant feed liquor temperature gap of the outdoor heat exchanger and the predeterminated position temperature of the outdoor heat exchanger;
Meet the first defrosting exit criteria in the refrigerant feed liquor temperature gap and the predeterminated position temperature meets the second defrosting
In the case where exit criteria, control stops reducing the running speed of the outdoor fan and/or the indoor fan.
2. control method according to claim 1, which is characterized in that
The first defrosting exit criteria are as follows:
ΔT1≥ΔT01
The second defrosting exit criteria are as follows:
T2≥T02, and t2≥t02
Wherein, Δ T1For the refrigerant feed liquor temperature gap of outdoor heat exchanger, Δ T01For fiducial temperature threshold value, T2For outdoor heat exchanger
Predeterminated position temperature, T02For preset temperature, t2For T2≥T02Duration, t02For preset duration.
3. control method according to claim 2, which is characterized in that the predeterminated position temperature includes the outdoor heat exchange
The upper body temperature of the outdoor coil temperature of device or the outdoor heat exchanger.
4. control method according to claim 2, which is characterized in that in the predeterminated position temperature include that the outdoor is changed
In the case where the upper body temperature of the outdoor coil temperature of hot device and the outdoor heat exchanger, the second defrosting exit criteria
Are as follows:
T21≥T22>T02, t21≥t02
Wherein, T21For the outdoor coil temperature of outdoor heat exchanger, T21For the outdoor coil temperature of outdoor heat exchanger, t21For T21≥
T22>T02Duration.
5. control method according to any one of claims 1 to 4, which is characterized in that control reduce the outdoor fan and/
Or the running speed of the indoor fan, comprising:
Outdoor fan target reduction of speed value and/or indoor fan target reduction of speed value are obtained according to the refrigerant feed liquor temperature gap;
Current running speed based on the outdoor fan, control reduce the outdoor according to the outdoor fan target reduction of speed value
The running speed of blower;And/or the current running speed based on the indoor fan, it controls according to the indoor fan target
Reduction of speed value reduces the running speed of the indoor fan.
6. control method according to claim 5, which is characterized in that according to refrigerant feed liquor temperature gap acquisition
Outdoor fan target reduction of speed value and/or the indoor fan target reduction of speed value, comprising:
According to the refrigerant feed liquor temperature gap, obtained from reduction of speed value incidence relation corresponding outdoor fan reduction of speed value and/or
Indoor fan reduction of speed value;
Using the outdoor fan reduction of speed value as the outdoor fan target reduction of speed value, and/or, by the indoor fan reduction of speed value
As the indoor fan target reduction of speed value.
7. control method according to claim 6, which is characterized in that in the reduction of speed value incidence relation, the refrigerant into
Liquid temperature gap and the outdoor fan reduction of speed value are negative correlation, the refrigerant feed liquor temperature gap and the outdoor fan reduction of speed
Value is negative correlation.
8. control method according to any one of claims 1 to 4, which is characterized in that reduce the room of the air-conditioning in control
After the running speed of outer blower and/or indoor fan, further includes:
Control reduces the running frequency of the compressor;And/or
Control increases the flow aperture of the throttling set.
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;
Indoor fan, is configured as driving indoor air flow and the indoor heat exchanger carries out heat exchange;
Outdoor fan, is configured as driving outdoor airflow and the outdoor heat exchanger carries out heat exchange;
The control device as claimed in claim 9 for being used for air-conditioner defrosting, is electrically connected with the indoor fan, outdoor fan.
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