CN110470019A - 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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- CN110470019A CN110470019A CN201910714266.5A CN201910714266A CN110470019A CN 110470019 A CN110470019 A CN 110470019A CN 201910714266 A CN201910714266 A CN 201910714266A CN 110470019 A CN110470019 A CN 110470019A
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- 238000010257 thawing Methods 0.000 title claims abstract description 112
- 238000004378 air conditioning Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 52
- 239000003507 refrigerant Substances 0.000 claims abstract description 183
- 238000010438 heat treatment Methods 0.000 claims abstract description 96
- 230000036760 body temperature Effects 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 5
- 238000009833 condensation Methods 0.000 abstract description 5
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- 230000015572 biosynthetic process Effects 0.000 abstract description 3
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- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 230000000875 corresponding effect Effects 0.000 description 14
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- 230000000694 effects Effects 0.000 description 12
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- 238000004891 communication Methods 0.000 description 7
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- 230000006698 induction Effects 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
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- 238000005859 coupling reaction Methods 0.000 description 3
- 230000002596 correlated effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
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- 230000008020 evaporation Effects 0.000 description 2
- 230000009916 joint effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 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
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 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
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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
-
- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (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 control and heat to the refrigerant of the refrigerant inlet pipe for the outdoor heat exchanger for flowing through air-conditioning in the case where air-conditioning is defrosted；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 heating.Judge that air-conditioning exits the opportunity of defrosting using the refrigerant feed liquor temperature gap and predeterminated position temperature these parametric synthesis of outdoor heat exchanger, so as to effectively improve the control precision for exiting defrosting to control air-conditioning；And by the heating operation to the refrigerant for flowing through refrigerant inlet pipe, the refrigerant temperature for flowing into outdoor heat exchanger is improved, melts the frost of condensation using refrigerant heat.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 to the refrigerant inlet pipe for the outdoor heat exchanger for flowing through air-conditioning
Refrigerant heating；
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 heating.
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；
Heating device is set in the refrigerant inlet pipe of outdoor heat exchanger in a heating mode, is configured as to flowing through
The refrigerant of refrigerant inlet pipe is heated；
The above-mentioned control device for air-conditioner defrosting, is electrically connected with heating device.
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 the heating operation of the refrigerant by the refrigerant inlet pipe to outdoor heat exchanger,
The refrigerant temperature for flowing into outdoor heat exchanger is effectively improved, and then melts the frost condensed on outdoor heat exchanger using refrigerant heat,
To reduce frost condensation to the adverse effect of air-conditioning itself heating performance.
Above general description and it is discussed below be only it is exemplary and explanatory, be not used in limitation the application.
Detailed description of the invention
One or more embodiments are illustrated by corresponding attached drawing, these exemplary illustrations and attached drawing
The restriction to embodiment is not constituted, the element with same reference numbers label is shown as similar element in attached drawing, and attached drawing is not
Composition limitation, and wherein:
Fig. 1 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides；
Fig. 2 is the flow diagram for the control method for air-conditioner defrosting that the 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；
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.
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 refrigerant feed liquor to the outdoor heat exchanger for flowing through air-conditioning is controlled
The refrigerant of pipeline heats.
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.
The defrosting operation of air-conditioning includes that control carries out the refrigerant of the refrigerant inlet pipe for the outdoor heat exchanger for flowing through air-conditioning
Heating, to improve the temperature for the refrigerant for flowing into outdoor heat exchanger, at this time since the refrigerant temperature for flowing into outdoor heat exchanger is higher, heat
It measures and is transmitted to outdoor environment side, can use the frost that the refrigerant heat after temperature improves melts outdoor heat exchanger.
Optionally, it is provided with a heating device at the refrigerant inlet pipe of outdoor heat exchanger of air conditioner, which is set
It is set to and controllably the refrigerant for flowing through refrigerant inlet pipe is heated.In the case where air-conditioning needs to defrost, can control out
Open heating device；And in the case where air-conditioning is without heating, then keep the closed state of 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.
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 heating.
During heating by the refrigerant of the refrigerant inlet pipe to the outdoor heat exchanger for flowing through air-conditioning, outdoor is utilized
The refrigerant feed liquor temperature gap of heat exchanger and the temperature integrated judgement air-conditioning of the predeterminated position of outdoor heat exchanger stop heating, exit and remove
The opportunity of frost.Refrigerant feed liquor temperature gap can reflect the frosting situation of air-conditioning from side；Outdoor coil temperature can be more
Sensitively reflect the temperature variations of the different location refrigerant pipeline of outdoor heat exchanger；Upper body temperature is able to reflect out
The heat exchanger effectiveness of refrigerant under different frosting situations.Therefore, pass through the refrigerant feed liquor temperature gap of outdoor heat exchanger and outdoor
The defrosting situation of the multiple parameters comprehensive descision outdoor heat exchanger such as predeterminated position temperature of heat exchanger, can effectively improve to control
Air-conditioning exits the control precision of defrosting, avoids air-conditioning from exiting defrosting mode in advance and defrosting is caused to be not thorough, alternatively, having defrosted
The normal heating performance of air-conditioning is influenced at rear continuous service defrosting mode.
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, predeterminated position temperature includes the outdoor coil temperature of outdoor heat exchanger or the upper body of outdoor heat exchanger
Temperature.
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=α * 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=δ * 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, it controls and the refrigerant for the refrigerant inlet pipe for flowing through outdoor heat exchanger is heated, comprising:
The heating parameters of heating are determined according to refrigerant feed liquor temperature gap；
Control is heated according to refrigerant of the heating parameters to the refrigerant inlet pipe for flowing through outdoor heat exchanger；
Wherein, heating parameters include target heating rate or target heating duration.
The refrigerant feed liquor temperature gap of outdoor heat exchanger is smaller, then illustrates that the frosting degree of outdoor heat exchanger of air conditioner is more tight
Weight needs to improve at this time the rate of heat addition, increases heating duration, shortens heating interruption duration, accelerates defrost；The refrigerant feed liquor temperature difference compared with
Greatly, then the frosting lesser extent for illustrating outdoor heat exchanger of air conditioner can suitably reduce the rate of heat addition, shorten heating duration, increase
Heating interruption duration, plays the role of energy-efficient.Therefore, it can be determined and be heated according to the refrigerant feed liquor temperature gap of outdoor heat exchanger
Heating parameters.It is heated according to corresponding heating parameters, in the case where ensuring that air-conditioning normally defrosts, reduces heating to the greatest extent
Device heats the operation power consumption of refrigerant, plays the role of energy-efficient.
Optionally, target heating rate is determined according to refrigerant feed liquor temperature gap, comprising:
According to refrigerant feed liquor temperature gap, the corresponding rate of heat addition is obtained from rate of heat addition incidence relation and will heat speed
Rate is as target heating rate.
It include the corresponding relationship of one or more refrigerant feed liquor temperature gaps and the rate of heat addition in rate of heat addition incidence relation.
For example, table 1 shows the corresponding relationship of a kind of optional refrigerant feed liquor temperature gap and the rate of heat addition:
Table 1: rate of heat addition incidence relation
| Refrigerant feed liquor temperature gap (unit: DEG C) | The rate of heat addition (unit: DEG C/min) |
| a1<ΔT1≤a2 | V1 |
| a2<ΔT1≤a3 | V2 |
| a3<ΔT1 | V3 |
In rate of heat addition incidence relation, the rate of heat addition and refrigerant feed liquor temperature gap are negatively correlated.That is, refrigerant feed liquor temperature
Difference is bigger, and the rate of heat addition is smaller；Refrigerant feed liquor temperature gap is smaller, and the rate of heat addition is bigger.
Optionally, determine that target heats duration according to refrigerant feed liquor temperature gap, comprising:
According to refrigerant feed liquor temperature gap, when obtaining corresponding heating duration from heating duration incidence relation and will heat
It is long that target is used as to heat duration.
Heat includes one or more refrigerant feed liquor temperature gaps and the corresponding relationship for heating duration in duration incidence relation.
For example, table 2 shows the corresponding relationship of a kind of optional refrigerant feed liquor temperature gap and heating duration:
Table 2: heating duration incidence relation
| Refrigerant feed liquor temperature gap (unit: DEG C) | It heats duration (unit: min) |
| a1<ΔT1≤a2 | t1 |
| a2<ΔT1≤a3 | t2 |
| a3<ΔT1 | t3 |
It heats in duration incidence relation, heats duration and refrigerant feed liquor temperature gap is negatively correlated.That is, refrigerant feed liquor temperature
Difference is bigger, and heating duration is smaller；Refrigerant feed liquor temperature gap is smaller, and heating duration is bigger.
In some embodiments, it after controlling to the refrigerant heating for the refrigerant inlet pipe for flowing through outdoor heat exchanger, also wraps
It includes:
Control reduces the running frequency of compressor；Alternatively,
Control reduces the revolving speed of outdoor fan or shuts down outdoor fan；Alternatively,
Control reduces the revolving speed of indoor fan；Alternatively,
Control increases the flow aperture of throttling set.
In the present embodiment, it heats by the refrigerant to the refrigerant inlet pipe for flowing through outdoor heat exchanger to defrost
In the case where, further by adjusting the operating status of the compressor of air-conditioning, outdoor fan, indoor fan or throttling set, mention
Defrosting effect of the height to the defrosting operation of the refrigerant for the refrigerant inlet pipe for flowing through outdoor heat exchanger.
Optionally, control reduces the running frequency of compressor.In embodiment, pass through the operation of the compressor of reduction air-conditioning
Frequency can reduce heat absorption rate of the refrigerant in outdoor heat exchanger, and then can weaken the outdoor caused by absorbing heat because of refrigerant
The adverse effect that heat exchange temperature further decreases, frosting degree aggravates is executing to improve air-conditioning to refrigerant inlet pipe
The defrosting effect for the defrosting operation heated with the refrigerant on refrigerant outlet tube road.
Optionally, control reduces the revolving speed of outdoor fan or shuts down outdoor fan.In embodiment, outdoor by reducing
The revolving speed of blower shuts down outdoor fan, it is possible to reduce the exchange rate of outdoor heat exchanger and outdoor environment reduces outdoor
The cryogenic conditions of environment influence the unfavorable temperature of outdoor heat exchanger frosting, reduce the heat dissipation of the refrigerant heat of defrost, to protect
Practical defrosting effect during card defrosting.
Optionally, control reduces the revolving speed of indoor fan.In embodiment, turned by the indoor fan of reduction air-conditioning
Speed, it is possible to reduce the exchange rate of indoor heat exchanger and indoor environment, so as to flow into outdoor heat exchange after indoor heat exchanger outflow
The refrigerant of device can retain more heat, can improve the defrosting effect using refrigerant heat to outdoor heat exchanger, can also be with
Reduce the operation power consumption of heating devices heat refrigerant.
Optionally, control increases the flow aperture of throttling set.In embodiment, pass through the throttling set of increase air-conditioning
Flow aperture can reduce the restriction effect of throttling set, be able to maintain higher temperature to flow through the refrigerant of throttling set,
To make the subsequent refrigerant for flowing into outdoor heat exchanger can be realized preferable defrosting 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, determine that the heating of heating is joined according to refrigerant feed liquor temperature gap
Number.
S203: control is heated according to refrigerant of the heating parameters to the refrigerant inlet pipe for flowing through outdoor heat exchanger.
S204: the compressor of air-conditioning, the operating status of outdoor fan, indoor fan or throttling set are adjusted.
S205: the refrigerant feed liquor temperature gap of outdoor heat exchanger and the predeterminated position temperature of outdoor heat exchanger are obtained.
S206: judge whether refrigerant feed liquor temperature gap meets the first defrosting exit criteria and whether predeterminated position temperature is full
Foot the second defrosting exit criteria.
S207: 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 heating and stop to adjust the compressor of air-conditioning, outdoor fan, indoor fan or throttling dress
The operating status set.
In the present embodiment, additional power consumption can be brought to a certain extent since heating devices heat refrigerant is defrosted, and
It also can shadow by adjusting the operating status raising defrosting effect of the compressor of air-conditioning, outdoor fan, indoor fan or throttling set
Ring the normal heating performance of air-conditioning.Therefore meet the feelings of defrosting exit criteria in refrigerant feed liquor temperature gap and predeterminated position temperature
Under condition, control stops heating and stop to adjust the operation shape of the compressor of air-conditioning, outdoor fan, indoor fan or throttling set
State reduces the loss of heating device and restores 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.
Fig. 4 is the structural schematic diagram for the air-conditioning that the embodiment of the present disclosure provides.
The embodiment of the present disclosure provides a kind of air-conditioning, as shown in Figure 4, 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 in the refrigerant inlet pipe of outdoor heat exchanger 41 in a heating mode, is configured as pair
The refrigerant for flowing through refrigerant inlet pipe is heated；
The above-mentioned control device 46 for air-conditioner defrosting, is electrically connected with heating device 45.
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 by the heating operation to the refrigerant for flowing through refrigerant inlet pipe, the refrigerant temperature for flowing into outdoor heat exchanger, benefit are improved
The frost for melting condensation with refrigerant heat realizes removing for air-conditioning in the case of not breaking air-conditioning normal heating operation state
Frost operation, promotes the usage experience of user.
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 to the refrigerant inlet pipe for the outdoor heat exchanger for flowing through the air-conditioning
Refrigerant heating；
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 heating.
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 is to flowing through the outdoor heat exchange
The refrigerant of the refrigerant inlet pipe of device heats, comprising:
The heating parameters of heating are determined according to the refrigerant feed liquor temperature gap；
Control is heated according to refrigerant of the heating parameters to the refrigerant inlet pipe for flowing through the outdoor heat exchanger；
Wherein, the heating parameters include target heating rate or target heating duration.
6. control method according to claim 5, which is characterized in that according to refrigerant feed liquor temperature gap determination
Target heating rate, comprising:
According to the refrigerant feed liquor temperature gap, the corresponding rate of heat addition is obtained from rate of heat addition incidence relation；
Using the rate of heat addition as the target heating rate.
7. control method according to claim 5, which is characterized in that according to refrigerant feed liquor temperature gap determination
Target heats duration, comprising:
According to the refrigerant feed liquor temperature gap, corresponding heating duration is obtained from heating duration incidence relation；
Duration is heated using the heating duration as the target.
8. control method according to any one of claims 1 to 4, which is characterized in that change in control to flowing through the outdoor
After the refrigerant heating of the refrigerant inlet pipe of hot device, further includes:
Control reduces the running frequency of the compressor；Alternatively,
Control reduces the revolving speed of the outdoor fan or shuts down the outdoor fan；Alternatively,
Control reduces the revolving speed of the indoor fan；Alternatively,
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；
Heating device is set in the refrigerant inlet pipe of the outdoor heat exchanger in a heating mode, is configured as to flowing through
The refrigerant of the refrigerant inlet pipe 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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| CN113357848A (en) * | 2020-03-06 | 2021-09-07 | 青岛海尔智能技术研发有限公司 | Heat exchanger and household electrical appliance |
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