CN110470023A - 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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- CN110470023A CN110470023A CN201910714522.0A CN201910714522A CN110470023A CN 110470023 A CN110470023 A CN 110470023A CN 201910714522 A CN201910714522 A CN 201910714522A CN 110470023 A CN110470023 A CN 110470023A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 92
- 238000010257 thawing Methods 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000003507 refrigerant Substances 0.000 claims abstract description 144
- 238000010438 heat treatment Methods 0.000 claims abstract description 140
- 230000002441 reversible effect Effects 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 24
- 230000000875 corresponding effect Effects 0.000 claims description 21
- 230000002596 correlated effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 11
- 238000004891 communication Methods 0.000 description 7
- 238000009833 condensation Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 7
- 230000002411 adverse Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000004590 computer program Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000006698 induction Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 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
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
-
- 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)
- Signal Processing (AREA)
- Thermal Sciences (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 heats the refrigerant on the refrigerant outlet tube road for the outdoor heat exchanger for flowing through air-conditioning and controls the flow aperture for increasing the throttling set of air-conditioning；Obtain the outdoor coil temperature, heating times and heating duration of outdoor heat exchanger；In the case where outdoor coil temperature, heating times and defrosting time meet the first preset condition, control air-conditioning enters reverse cycle defrosting mode.On the opportunity for entering reverse cycle defrosting mode using the outdoor coil temperature of outdoor heat exchanger, heating times and heating duration comprehensive descision air-conditioning, improve the control precision for entering reverse cycle defrosting mode to control air-conditioning；And by the way that the flow aperture of throttling set is heated and increased to the refrigerant for flowing through refrigerant outlet tube road, improve the frosting situation of outdoor heat exchanger.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:
In the mode that above-mentioned several pairs of outdoor heat exchangers defrost, defrosted in the way of reverse cycle defrosting than more thoroughly,
But due to reverse cycle defrosting be change refrigerant flow path so that compressor discharge high temperature refrigerant first flow through outdoor heat exchanger with
Melt frost using refrigerant heat, the original heating mode of air-conditioning can be broken, the normal heating performance of air-conditioning is constituted biggish
It influences.Therefore, in the related technology, when outdoor heat exchanger needs to defrost, air-conditioning runs reverse cycle defrosting mode, can be to air-conditioning
Normal heating performance constitutes larger impact.
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
In art, when outdoor heat exchanger needs to defrost, air-conditioning runs reverse cycle defrosting mode, can be to the normal heating performance structure of air-conditioning
The technical issues of at larger impact.
In some embodiments, the control method for air-conditioner defrosting includes:
In the case where air-conditioning is defrosted, control to the refrigerant outlet tube road for the outdoor heat exchanger for flowing through air-conditioning
Refrigerant heats and controls the flow aperture for increasing the throttling set of air-conditioning；
Obtain the outdoor coil temperature, heating times and heating duration of outdoor heat exchanger；
Outdoor coil temperature, heating times and defrosting time meet the first preset condition in the case where, control air-conditioning into
Enter reverse cycle defrosting mode.
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 to the refrigerant outlet tube road of the outdoor heat exchanger in a heating mode, is configured as pair
The refrigerant for flowing through refrigerant outlet tube road is heated；
The above-mentioned control device for air-conditioner defrosting is electrically connected with the throttling set, the 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 heating time of the outdoor coil temperature, heating device of outdoor heat exchanger during Defrost operation
Number and heating these parametric synthesis of duration judges that air-conditioning enters the opportunity of reverse cycle defrosting mode, improve to control air-conditioning into
The control precision for entering reverse cycle defrosting mode avoids the air-conditioning when outdoor heat exchanger needs to defrost from running reverse cycle defrosting mode
And to the larger impact that the normal heating performance of air-conditioning is constituted；And by way of being heated to the refrigerant for flowing through refrigerant outlet tube road
The refrigerant temperature for being back to compressor is improved, to promote heating efficiency, reduces frost condensation to air-conditioning itself heating performance
Adverse effect；Meanwhile the flow aperture by increasing throttling set changes refrigerant temperature and pressure in refrigerant circulation circuit etc.,
The refrigerant for finally flowing into outdoor heat exchanger progress defrost is set to reach preferable defrosting effect, to reduce frost condensation to air-conditioning
The adverse effect of 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, control goes out liquid to the refrigerant for the outdoor heat exchanger for flowing through air-conditioning
The refrigerant of pipeline heats and controls the flow aperture for increasing the throttling set of air-conditioning.
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 on the refrigerant outlet tube road for the outdoor heat exchanger for flowing through air-conditioning
It heats and controls the flow aperture for increasing the throttling set of air-conditioning.It can be with by the heating to the refrigerant for flowing through refrigerant outlet tube road
The refrigerant temperature for flowing into indoor heat exchanger is further increased, so as to enhance actual defrosting effect；By increasing throttling dress
The flow aperture set changes refrigerant temperature and pressure in refrigerant circulation circuit etc., makes to finally flow into outdoor heat exchanger progress defrost
Refrigerant can reach preferable defrosting effect, to reduce frost condensation to the adverse effect of air-conditioning itself heating performance.
Optionally, it is provided with a heating device at the refrigerant outlet tube road of outdoor heat exchanger of air conditioner, which is set
It is set to and controllably the refrigerant for flowing through refrigerant outlet tube road 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 outdoor coil temperature, heating times and heating duration of outdoor heat exchanger are obtained.
Optionally, the coil pipe position of the outdoor heat exchanger of air-conditioner outdoor unit is provided with one first temperature sensor, this
One temperature sensor 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 the first 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.
Heating times are the refrigerant heating in preset time to the refrigerant outlet tube road for the outdoor heat exchanger for flowing through air-conditioning
Heating times；When the heating that a length of last heats the refrigerant on the refrigerant outlet tube road for the outdoor heat exchanger for flowing through air-conditioning when heating
It is long.
The refrigerant on the refrigerant outlet tube road for the outdoor heat exchanger for flowing through air-conditioning is heated in control, improves inflow outdoor and changes
The temperature of the refrigerant of hot device is to utilize the frost of the refrigerant heat thawing outdoor heat exchanger after temperature raising.It is halfway in defrost
In the case of, there can be the case where frequently heating defrost and extension of single heating defrost time.Therefore when heating times and heating
Whether the long heating defrosting operation that can be used as defrosts thorough reference factor.
S103: in the case where outdoor coil temperature, heating times and defrosting time meet the first preset condition, control is empty
It transfers in into reverse cycle defrosting mode.
Reverse cycle defrosting mode includes that the refrigerant flow direction of control air-conditioning is switched to the flow direction opposite with heating mode；In this kind
Under model process, the high temperature refrigerant of compressor discharge is first to flow through outdoor heat exchanger, so as to utilize the heat of high temperature refrigerant
Realize the defrosting operation to outdoor heat exchanger.
Optionally, the first preset condition are as follows:
T1≤T01, t1≥t01, N1≥N01, and t2≥t02
Wherein, T1For the outdoor coil temperature of outdoor heat exchanger, T01For the first preset temperature, t1For T1≤T01It is lasting when
It is long, t01For the first preset duration, N1For the heating times of the refrigerant heating to the refrigerant outlet tube road for flowing through outdoor heat exchanger, N01
To preset heating times, t2For N1The heating duration of the secondary refrigerant heating to the refrigerant outlet tube road for flowing through outdoor heat exchanger,
t02For the second preset duration.
Optionally, the value range of the first preset temperature is [3 DEG C, 6 DEG C] (DEG C: degree Celsius), for example, 3 DEG C, 4 DEG C, 5 DEG C,
6℃；The value range of first preset duration is [50s, 70s] (s: second), for example, 50s, 60s, 70s；Second preset duration takes
Being worth range is [2min, 4min] (min: minute), for example, 2min, 3min, 4min；The value range of default heating times is [2
It is secondary, 4 times], for example, 2 times, 3 times, 4 times.
For example, being less than 5 degree at outdoor coil temperature continuous 60 seconds, heating times are grown up when being more than 3 times and the 3rd time humidifications
In 3 minutes, then controls air-conditioning and enter reverse cycle defrosting mode.
Optionally, it controls and the refrigerant on the refrigerant outlet tube road for flowing through outdoor heat exchanger is heated, comprising:
Go out the temperature gap of liquid temperature according to the refrigerant that the initial refrigerant of outdoor heat exchanger goes out liquid temperature and outdoor heat exchanger
Determine the heating parameters of heating；
Control is heated according to refrigerant of the heating parameters to the refrigerant outlet tube road for flowing through outdoor heat exchanger；
Wherein, heating parameters include target heating rate, target heating duration or target heating interruption duration.
Optionally, the outdoor heat exchanger of air-conditioner outdoor unit is provided with a second temperature sensor, second temperature sensing
Device can be used for detecting the real time temperature of the refrigerant on the refrigerant outlet tube road for flowing through outdoor heat exchanger.Therefore, acquired outdoor is changed
The refrigerant of hot device, which goes out liquid temperature, can be real time temperature by refrigerant detected by second temperature sensor.Here, refrigerant
When outlet tube road is run for air-conditioning with heating mode refrigerant outflow outdoor heat exchanger via pipeline.
In the case where air-conditioning is defrosted, control adds the refrigerant on the refrigerant outlet tube road for flowing through outdoor heat exchanger
Heat, it is known that it is that the refrigerant under outdoor heat exchanger frosting situation goes out liquid temperature that the initial refrigerant of outdoor heat exchanger, which goes out liquid temperature,.With
The progress of heating defrosting operation, the refrigerant of outdoor heat exchanger go out liquid temperature and gradually rise.Therefore, the initial refrigerant of outdoor heat exchanger
The temperature gap (the first temperature gap) that liquid temperature and refrigerant go out liquid temperature out can reflect the defrosting situation of air-conditioning.First temperature
Difference is smaller, then illustrates that the frosting degree of outdoor heat exchanger of air conditioner is more serious, needs to improve the rate of heat addition at this time, increases heating
Duration shortens heating interruption duration, accelerates defrost；First temperature gap is larger, then illustrates the frosting journey of outdoor heat exchanger of air conditioner
Degree is lighter, can suitably reduce the rate of heat addition, shortens heating duration, increases heating and is interrupted duration, plays the role of energy-efficient.Cause
This, can determine the heating parameters of heating according to the first temperature gap.It is heated according to corresponding heating parameters, is ensuring sky
Levelling often in the case where defrosting, reduces the operation power consumption of heating devices heat refrigerant to the greatest extent, plays the role of energy-efficient.
Optionally, target heating rate is determined according to the first temperature gap, comprising:
According to the first temperature gap, the corresponding rate of heat addition is obtained from rate of heat addition incidence relation and makees the rate of heat addition
For target heating rate.
It include the corresponding relationship of one or more first temperature gaps and the rate of heat addition in rate of heat addition incidence relation.Example
Such as, table 1 shows corresponding relationship (wherein, the Δ T of a kind of optional first temperature gap and the rate of heat addition1=T2-TInitially, Δ T1
Initial refrigerant for outdoor heat exchanger goes out liquid temperature and refrigerant goes out the temperature gap of liquid temperature, TInitiallyFor the initial of outdoor heat exchanger
Refrigerant goes out liquid temperature):
Table 1: rate of heat addition incidence relation
| First temperature gap (unit: DEG C) | The rate of heat addition (unit: DEG C/min) |
| a11<ΔT1≤a12 | V1 |
| a12<ΔT1≤a13 | V2 |
| a13<ΔT1 | V3 |
In rate of heat addition incidence relation, the rate of heat addition and the first temperature gap are negatively correlated.That is, the first temperature gap is got over
Greatly, the rate of heat addition is smaller；First temperature gap is smaller, and the rate of heat addition is bigger.
Optionally, determine that target heats duration according to the first temperature gap, comprising:
According to the first temperature gap, corresponding heating duration is obtained from heating duration incidence relation and makees heating duration
Duration is heated for target.
Heat includes one or more first temperature gaps and the corresponding relationship for heating duration in duration incidence relation.Example
Such as, table 2 shows the corresponding relationship of a kind of optional first temperature gap and heating duration:
Table 2: heating duration incidence relation
| First temperature gap (unit: DEG C) | It heats duration (unit: min) |
| a11<ΔT1≤a12 | t11 |
| a12<ΔT1≤a13 | t12 |
| a13<ΔT1 | t13 |
It heats in duration incidence relation, heats duration and the first temperature gap is negatively correlated.That is, the first temperature gap is got over
Greatly, heating duration is smaller；First temperature gap is smaller, and heating duration is bigger.
Optionally, target heating interruption duration is determined according to the first temperature gap, comprising:
According to the first temperature gap, corresponding heating interruption duration is obtained from heating interruption duration incidence relation and will be added
Heat interruption duration heats interruption duration as target.
It include that one or more first temperature gaps are corresponding with heating interruption duration in heating interruption duration incidence relation
Relationship.For example, table 3 shows the corresponding relationship of a kind of optional first temperature gap and heating interruption duration:
Table 3: heating interruption duration incidence relation
In heating interruption duration incidence relation, heating interruption duration is positively correlated with the first temperature gap.That is, the first temperature
Difference is bigger, and heating interruption duration is bigger；First temperature gap is smaller, and heating interruption duration is smaller.
Optionally, control increases the flow aperture of throttling set, comprising:
In the case where the temperature gap of outdoor coil temperature and outdoor environment temperature is less than fiducial temperature threshold value, control increases
The flow aperture of big throttling set.
Optionally, air-conditioner outdoor unit is provided with a third temperature sensor, which can be used for sensing chamber
External environment temperature.Therefore, acquired outdoor environment temperature can be by real-time detected by the third temperature sensor
Temperature.
Optionally, the value range of fiducial temperature threshold value is [15 DEG C, 25 DEG C] (DEG C: degree Celsius), for example, 15 DEG C, 20 DEG C,
25℃。
The temperature gap (second temperature difference) of outdoor coil temperature and outdoor environment temperature is less than fiducial temperature threshold value, table
Bright air-conditioning is influenced by outdoor heat exchanger of air conditioner frosting, heating capacity decline.Therefore the flow that control increases throttling set is opened
Degree changes refrigerant temperature and pressure etc. in refrigerant circulation circuit, enables to finally flow into the refrigerant that outdoor heat exchanger carries out defrost
Enough reach preferable defrosting effect.
Optionally, control increases the flow aperture of throttling set, comprising:
Target flow aperture is determined according to second temperature difference；Wherein, target flow aperture is greater than the system in heating operations
Heat flow aperture；
The flow aperture of throttling set is adjusted to target flow aperture.
Second temperature difference is larger, then illustrates that air-conditioning heating ability is poor, and the frosting degree of outdoor heat exchanger of air conditioner is more
Seriously, setting target flow aperture is larger at this time, accelerates defrost；Second temperature difference is smaller, then illustrates that heating capacity is preferable, empty
The frosting lesser extent for adjusting outdoor heat exchanger can suitably reduce target flow aperture, and the flow for reducing increase throttling set is opened
Spend the influence to the normal heating performance of air-conditioning.Therefore, it can determine that the target flow of throttling set is opened according to second temperature difference
Degree.
Optionally, target flow aperture is determined according to second temperature difference, comprising:
According to second temperature difference, corresponding target flow aperture is obtained from flow aperture incidence relation and opens flow
Degree is used as target flow aperture.
It include the corresponding relationship of one or more second temperature differences and flow aperture in flow aperture incidence relation.Example
Such as, corresponding relationship (wherein, the Δ T of a kind of optional second temperature difference and flow aperture is shown in table 22=T1-T3, Δ T2
For second temperature difference, T3For outdoor environment temperature):
Table 2: flow aperture incidence relation
| Second temperature difference (unit: DEG C) | Flow aperture |
| a21<ΔT2≤a22 | B1 |
| a22<ΔT2≤a23 | B2 |
| a23<ΔT2 | B3 |
In flow aperture incidence relation, target flow aperture and second temperature difference are negative correlation.That is second temperature difference
Bigger, then target flow aperture is with regard to smaller；And second temperature difference is smaller, then target flow aperture is bigger.
In some embodiments, after controlling to the refrigerant heating on the refrigerant outlet tube road for flowing through outdoor heat exchanger, also
Include:
The refrigerant for obtaining outdoor heat exchanger goes out liquid temperature；
In the case where refrigerant goes out liquid temperature and meets the second preset condition, control stops to the refrigerant for flowing through outdoor heat exchanger
The refrigerant on outlet tube road heats.
The temperature for flowing out the refrigerant of outdoor heat exchanger is to can reflect out the heat exchange effect of outdoor heat exchanger and outdoor environment
Rate, and heat exchanger effectiveness then will receive the influence of the frosting degree of outdoor heat exchanger；Here, air-conditioning frosting degree is lower, ice
In the case that frost thickness are relatively thin, influence of the frost to heat exchange is smaller, the heat that the refrigerant after flowing through outdoor heat exchanger is absorbed
It is more；And in the case where air-conditioning frosting degree is higher, frost thickness is thicker, frost is affected to heat exchange, flows through room
The heat that refrigerant after external heat exchanger is absorbed is less.Therefore the refrigerant that acquires, which goes out liquid temperature and can be used as, measures air-conditioning and changes
The reference factor of the frosting degree of hot device.
Optionally, the second preset condition are as follows:
T2≥T02, and t3≥t03
Wherein, T2Go out liquid temperature, T for the refrigerant of outdoor heat exchanger02For the second preset temperature, t3For T2≥T02It is lasting when
It is long, t03For third preset duration.In second preset condition, the refrigerant of outdoor heat exchanger goes out liquid temperature greater than the second default temperature
It spends and duration is greater than third preset duration, the heating performance that can reflect out outdoor heat exchanger restores at least frost or frostless feelings
Condition.Therefore, the refrigerant heating to the refrigerant outlet tube road for the outdoor heat exchanger for flowing through air-conditioning can be stopped, heating device is reduced and add
The power consumption of hot refrigerant reduces the cost of operation of air conditioner.
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, control goes out liquid to the refrigerant for the outdoor heat exchanger for flowing through air-conditioning
The refrigerant of pipeline heats and controls the flow aperture for increasing the throttling set of air-conditioning.
S203: the refrigerant for obtaining outdoor heat exchanger goes out liquid temperature.
S204: judge that refrigerant goes out whether liquid temperature meets the second preset condition.
S205: in the case where refrigerant goes out liquid temperature and meets the second preset condition, control stops to flowing through outdoor heat exchanger
Refrigerant outlet tube road refrigerant heating.
S206: the outdoor coil temperature, heating times and heating duration of outdoor heat exchanger are obtained.
S207: judge whether outdoor coil temperature, heating times and defrosting time meet the first preset condition.
S208: in the case where outdoor coil temperature, heating times and defrosting time meet the first preset condition, control is empty
It transfers in into reverse cycle defrosting mode.
In the present embodiment, when using the outdoor coil temperature of outdoor heat exchanger, the heating times of heating device and heating
These long parametric synthesis judge that air-conditioning enters the opportunity of reverse cycle defrosting mode, air-conditioning frosting and other air-conditioning is normally made
Control air-conditioning enters reverse cycle defrosting mode in the halfway situation of the lesser Defrost mode defrosting of heat affecting, improves empty to control
The control precision into reverse cycle defrosting mode is transferred in, the air-conditioning when outdoor heat exchanger needs to defrost is avoided to run reverse cycle defrosting
Mode and to the normal heating performance of air-conditioning constitute larger impact.
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 to the refrigerant outlet tube road of outdoor heat exchanger 41 in a heating mode, is configured as pair
The refrigerant for flowing through refrigerant outlet tube road is heated；
The above-mentioned control device 46 for air-conditioner defrosting, is electrically connected with heating device 45, throttling set 43.
Air-conditioning utilizes the heating time of the outdoor coil temperature, heating device of outdoor heat exchanger during Defrost operation
Number and heating these parametric synthesis of duration judges that air-conditioning enters the opportunity of reverse cycle defrosting mode, improve to control air-conditioning into
Enter the control precision of reverse cycle defrosting mode；And it is improved and is back to by way of being heated to the refrigerant for flowing through refrigerant outlet tube road
The refrigerant temperature of compressor reduces frost condensation to the adverse effect of air-conditioning itself heating performance to promote heating efficiency；Together
When, the flow aperture by increasing throttling set changes refrigerant temperature and pressure etc. in refrigerant circulation circuit, makes to finally flow into
The refrigerant that outdoor heat exchanger carries out defrost can reach preferable defrosting effect, to reduce frost condensation to air-conditioning itself heating property
The adverse effect of energy.
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 outlet tube road for the outdoor heat exchanger for flowing through the air-conditioning
Refrigerant heats and controls the flow aperture for increasing the throttling set of the air-conditioning；
Obtain the outdoor coil temperature, heating times and heating duration of the outdoor heat exchanger；
In the case where the outdoor coil temperature, the heating times and the defrosting time meet the first preset condition, control
It makes the air-conditioning and enters reverse cycle defrosting mode.
2. control method according to claim 1, which is characterized in that first preset condition are as follows:
T1≤T01, t1≥t01, N1≥N01, and t2≥t02
Wherein, T1For the outdoor coil temperature of outdoor heat exchanger, T01For the first preset temperature, t1For T1≤T01Duration,
t01For the first preset duration, N1For the heating times of the refrigerant heating to the refrigerant outlet tube road for flowing through outdoor heat exchanger, N01For
Default heating times, t2For N1The heating duration of the secondary refrigerant heating to the refrigerant outlet tube road for flowing through outdoor heat exchanger, t02
For the second preset duration.
3. control method according to claim 1 or 2, which is characterized in that the flow that control increases the throttling set is opened
Degree, comprising:
In the case where the temperature gap of the outdoor coil temperature and outdoor environment temperature is less than fiducial temperature threshold value, control increases
The flow aperture of the big throttling set.
4. control method according to claim 3, which is characterized in that control increases the flow aperture of the throttling set,
Include:
Target flow aperture is determined according to the temperature gap；Wherein, the target flow aperture is greater than the system in heating operations
Heat flow aperture；
The flow aperture of the throttling set is adjusted to the target flow aperture.
5. control method according to claim 4, which is characterized in that determine the target flow according to the temperature gap
Aperture, comprising:
According to the temperature gap, corresponding target flow aperture is obtained from flow aperture incidence relation；
Using the flow aperture as the target flow aperture.
6. control method according to claim 5, which is characterized in that described default in the flow aperture incidence relation
Position temperature and the flow aperture are to be positively correlated.
7. control method according to claim 1 or 2, which is characterized in that in control to flowing through the outdoor heat exchanger
After the refrigerant heating on refrigerant outlet tube road, further includes:
The refrigerant for obtaining the outdoor heat exchanger goes out liquid temperature；
In the case where the refrigerant goes out liquid temperature and meets the second preset condition, control stops to flowing through the outdoor heat exchanger
The refrigerant on refrigerant outlet tube road heats.
8. control method according to claim 7, which is characterized in that second preset condition are as follows:
T2≥T02, and t3≥t03
Wherein, T2Go out liquid temperature, T for the refrigerant of outdoor heat exchanger02For the second preset temperature, t3For T2≥T02Duration,
t03For third preset duration.
9. a kind of control device for air-conditioner defrosting, including processor and the memory for being stored with program instruction, feature exists
In the processor is configured to executing as claimed in any one of claims 1 to 8 be used for when executing described program instruction
The control method of air-conditioner defrosting.
10. a kind of air-conditioning characterized by comprising
Refrigerant circulation circuit connects structure by refrigerant pipeline by outdoor heat exchanger, indoor heat exchanger, throttling set and compressor
At；
Heating device is set to the refrigerant outlet tube road of the outdoor heat exchanger in a heating mode, is configured as to flowing through
The refrigerant on refrigerant outlet tube road is heated；
The control device as claimed in claim 9 for being used for air-conditioner defrosting, is electrically connected with the throttling set, the heating device
It connects.
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| CN110470023B (en) | 2022-03-29 |
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