CN110469960A - For the control method of air-conditioner defrosting, device and air-conditioning - Google Patents
For the control method of air-conditioner defrosting, device and air-conditioning Download PDFInfo
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- CN110469960A CN110469960A CN201910671536.9A CN201910671536A CN110469960A CN 110469960 A CN110469960 A CN 110469960A CN 201910671536 A CN201910671536 A CN 201910671536A CN 110469960 A CN110469960 A CN 110469960A
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- refrigerant
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- heating
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
Abstract
This application involves air-conditioner defrosting technical fields, disclose a kind of control method for air-conditioner defrosting.Control method includes: to obtain the first outdoor coil temperature, refrigerant feed liquor temperature and refrigerant in the operation of air conditioner heating mode processes and go out liquid temperature；After going out liquid temperature according to first outdoor coil temperature, the refrigerant feed liquor temperature and the refrigerant and determining satisfaction defrosting entry condition, the refrigerant of the refrigerant inlet pipe for the outdoor heat exchanger for flowing through the air-conditioning is heated in control.The control method that the embodiment of the present disclosure provides can go out the judgement whether liquid temperature meets defrosting entry condition to air-conditioning according to outdoor coil temperature, refrigerant feed liquor temperature and refrigerant, improve the control precision to control air-conditioner defrosting；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, and then melt the frost condensed on 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 it is a kind of for the control method of air-conditioner defrosting, device and
Air-conditioning.
Background technique
Currently, the mainstream model of air-conditioning is mostly the heat exchange function for having refrigeration refrigeration double mode, here, air-conditioning is cryogenically
Under area or the biggish weather conditions of wind and snow, user is usually to adjust air-conditioning to heating mode, indoor to be promoted using air-conditioning
The temperature of environment；In air conditioner in operation heating operations, the outdoor heat exchanger of outdoor unit is to play to absorb from outdoor environment
The effect of the evaporator of heat is influenced by the temperature and humidity of outdoor environment, and the more ice of condensation is easy on outdoor heat exchanger
Frost, and meeting is so that the heating capacity of air-conditioning can be lower and lower, therefore imitates to guarantee to heat after simultaneously frost knot arrives certain thickness
Fruit avoids frost condensation excessive, it is therefore necessary to defrost to outdoor heat exchanger.
Here, the mode to defrost to outdoor heat exchanger is mainly include the following types: first is that reverse cycle defrosting, air-conditioning carry out
When reverse cycle defrosting, the high temperature refrigerant of compressor discharge first flows through outdoor heat exchanger, to melt frost using refrigerant heat；Second is that
Increase electric heater unit on the refrigerant pipeline of air-conditioning, the refrigerant for flowing into outdoor heat exchanger is heated using electric heater unit, in turn
Melt the frost condensed on outdoor heat exchanger using refrigerant heat；Third is that adjusting the air supply rates such as compressor, electric expansion valve
Operating parameter, to change the temperature and pressure state of refrigerant in refrigerant pipeline, making it also can be played to outdoor heat exchanger defrosting
Effect.
During realizing the embodiment of the present disclosure, at least there are the following problems in the related technology for discovery:
More or less all can in the process as shown in above-described embodiment to the defrosting of the Defrost mode of outdoor heat exchanger
Constituting on the normal heating performance of air-conditioning influences, therefore air-conditioning will do it defrosting judgement before defrosting, and then be tied according to judgement
Whether fruit control air-conditioning defrosts；In the related technology generally by numeric ratio between outdoor environment temperature and frost point temperature
Compared with mode carry out defrosting judgement, due to outdoor heat exchanger frosting device can simultaneously by outdoor environment and self-operating state
The influence of equal many factors, therefore above-mentioned defrosting judgment mode is excessively rough, it is difficult to meet air-conditioning to accurate triggering defrosting movement
Needs.
Summary of the invention
In order to which some aspects of the embodiment to disclosure have basic understanding, simple summary is shown below.It is described general
Including is not extensive overview, nor to determine key/critical component or describe the protection scope of these embodiments, but is made
For the preamble of following detailed description.
The embodiment of the present disclosure provide it is a kind of for the control method of air-conditioner defrosting, device and air-conditioning, to solve related skill
Air-conditioner defrosting judges the lower technical problem of accuracy in art.
In some embodiments, the control method for air-conditioner defrosting includes:
In the operation of air conditioner heating mode processes, the first outdoor coil temperature, refrigerant feed liquor temperature and refrigerant are obtained
Liquid temperature out；
Satisfaction is determined going out liquid temperature according to first outdoor coil temperature, the refrigerant feed liquor temperature and the refrigerant
After the entry condition that defrosts, the refrigerant of the refrigerant inlet pipe for the outdoor heat exchanger for flowing through the air-conditioning is heated in control.
In some embodiments, the control device for air-conditioner defrosting includes:
Processor and the memory for being stored with program instruction, the processor is configured to executing described program instruction
When, execute the control method for air-conditioner defrosting in above-mentioned some embodiments.
In some embodiments, the air-conditioning, comprising:
Refrigerant circulation circuit is connected by outdoor heat exchanger, indoor heat exchanger, throttling set and compressor by refrigerant pipeline
It constitutes；
Heating device is set in the refrigerant inlet pipe of the outdoor heat exchanger in a heating mode, is configured as pair
The refrigerant for flowing through the refrigerant inlet pipe is heated；
The control device for air-conditioner defrosting as described in above-mentioned some embodiments, is electrically connected with the heating device.
The embodiment of the present disclosure provide for the control method of air-conditioner defrosting, device and air-conditioning, following technology may be implemented
Effect:
The control method for air-conditioner defrosting that the embodiment of the present disclosure provides can be according to the outdoor coil pipe used temperature acquired
Degree, refrigerant feed liquor temperature and refrigerant go out the judgement whether these parametric synthesis of liquid temperature meet defrosting entry condition to air-conditioning,
So as to effectively improve the control precision to control air-conditioner defrosting；And pass through the heating to the refrigerant for flowing through refrigerant inlet pipe
Operation can effectively improve the refrigerant temperature for flowing into outdoor heat exchanger, and then be melted using refrigerant heat and be coagulated on outdoor heat exchanger
The frost of knot, to reduce frost condensation to the adverse effect of air-conditioning itself heating performance.
Above general description and it is discussed below be only it is exemplary and explanatory, be not used in limitation the application.
Detailed description of the invention
One or more embodiments are illustrated by corresponding attached drawing, these exemplary illustrations and attached drawing
The restriction to embodiment is not constituted, the element with same reference numbers label is shown as similar element in attached drawing, and attached drawing is not
Composition limitation, and wherein:
Fig. 1 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides；
Fig. 2 is the flow diagram for the control method for air-conditioner defrosting that the another embodiment of the disclosure provides；
Fig. 3 is the structural schematic diagram for the control device for air-conditioner defrosting that the embodiment of the present disclosure provides；
Fig. 4 is the structural schematic diagram for the air-conditioning that the embodiment of the present disclosure provides.
Specific embodiment
The characteristics of in order to more fully hereinafter understand the embodiment of the present disclosure and technology contents, with reference to the accompanying drawing to this public affairs
The realization for opening embodiment is described in detail, appended attached drawing purposes of discussion only for reference, is not used to limit the embodiment of the present disclosure.
In technical description below, for convenience of explanation for the sake of, disclosed embodiment is fully understood with providing by multiple details.
However, one or more embodiments still can be implemented in the case where without these details.It in other cases, is simplification
Attached drawing, well known construction and device can simplify displaying.
Fig. 1 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides.
As shown in Figure 1, providing a kind of control method for air-conditioner defrosting in the embodiment of the present disclosure, can be used for solving sky
Outdoor heat exchanger when running under sleet or low temperature severe cold condition is adjusted frosting occur, influence the problem of air-conditioning normal heating performance；
In embodiment, the main process flow steps of the control method include:
S101, in operation of air conditioner heating mode processes, obtain the first outdoor coil temperature, refrigerant feed liquor temperature and refrigerant
Liquid temperature out；
In embodiment, when frosting problem occurs in the outdoor heat exchanger of air-conditioner outdoor unit, outdoor environment is mostly in temperature
Lower, the biggish bad working environments of humidity, user is usually that air-conditioning is set as heating mode operation at this time, to utilize air-conditioning to room
Interior environment carries out heating heating.Therefore the control method for air-conditioner defrosting that the embodiment of the present disclosure provides is in air-conditioning to heat
The control flow enabled when mode operation.
When air-conditioning is with other such as refrigeration modes, the operation of dehumidification mode isotype, the room as corresponding to these modes
The problem of outer operating condition is generally not in air-conditioner outdoor unit frosting, thus it is optional, it is run in air-conditioning with other non-heating modes
When, the corresponding flow control process of the control method does not enable, and misses to avoid air-conditioning in operation refrigeration mode, dehumidification mode isotype
Triggering is acted for the defrosting of outdoor heat exchanger, is influenced air-conditioning and is normally freezed or dehumidification work process.
In an alternative embodiment, one first temperature is provided at the coil pipe position of the outdoor heat exchanger of air-conditioner outdoor unit
Sensor is spent, which can be used for detecting the real time temperature of its coil pipe position；Therefore, in step s101
The first acquired outdoor coil temperature can be the real-time temperature by coil pipe position detected by first temperature sensor
Degree.
In the embodiments of the present disclosure, the temperature change of the coil pipe position of outdoor heat exchanger is can intuitively to reflect in outside
Outdoor environment temperature and internal refrigerant temperature joint effect under outdoor heat exchanger refrigerant pipeline temperature variations, separately
It is outside typically also the pipeline position that outdoor heat exchanger is easy to appear frosting problem；Therefore the outdoor coil temperature got can be made
To measure the reference factor that air-conditioning inside and outside influences the frosting that outdoor heat exchanger generates jointly.
In an alternative embodiment, the outdoor unit of air-conditioning is additionally provided with a second temperature sensor, the second temperature
Sensor can be used for detecting the real time temperature of the refrigerant for the refrigerant inlet pipe for flowing through outdoor heat exchanger；Therefore, in step S101
In acquired refrigerant feed liquor temperature can be the real time temperature of the refrigerant detected by the second temperature sensor；
Here, when refrigerant inlet pipe is run for air-conditioning with heating mode refrigerant flow into outdoor heat exchanger via pipe
Road.
In the embodiments of the present disclosure, the temperature for flowing into the refrigerant of outdoor heat exchanger is the shell for directly influencing outdoor heat exchanger
The internal temperature factor of temperature；Here, when air-conditioning is run with heating mode, outdoor heat exchanger absorbs heat from outdoor environment
Amount, heat transfer sequence are the refrigerant in outdoor environment-outdoor heat exchanger shell-outdoor heat exchange enclosure interior pipeline；Due to heat
The temperature difference between the two of conduction can influence heat conduction efficiency, therefore flow into the temperature height of the refrigerant of outdoor heat exchanger
It is the thermal conduction rate that can change temperature from the refrigerant in outdoor heat exchanger shell internally pipeline, and then room can be influenced
The variation of external heat exchanger case temperature；Therefore the refrigerant feed liquor temperature got, which can be used as, measures air-conditioning internal temperature situation pair
The reference factor that outdoor heat exchanger frosting influences.
In an alternative embodiment, the outdoor unit of air-conditioning is additionally provided with a third temperature sensor, the third temperature
Sensor can be used for detecting the real time temperature of the refrigerant on the refrigerant outlet tube road for flowing through outdoor heat exchanger；Therefore, in step S101
In acquired refrigerant outlet tube road can be the real time temperature of the refrigerant detected by the third temperature sensor；
Here, when refrigerant outlet tube road is run for air-conditioning with heating mode refrigerant outflow outdoor heat exchanger via pipe
Road.
In the embodiments of the present disclosure, the temperature for flowing out the refrigerant of outdoor heat exchanger is to can reflect out outdoor heat exchanger and room
The heat exchanger effectiveness of external environment, and heat exchanger effectiveness then will receive the influence of the frosting degree of outdoor heat exchanger；Here, in air-conditioning
Frosting degree is lower, in the case where frost thinner thickness, and influence of the frost to heat exchange is smaller, cold after flowing through outdoor heat exchanger
The heat that matchmaker is absorbed is more；And in the case where air-conditioning frosting degree is higher, frost thickness is thicker, shadow of the frost to heat exchange
Sound is larger, and the heat that the refrigerant after flowing through outdoor heat exchanger is absorbed is less.Therefore the refrigerant that acquires go out liquid temperature can be with
Reference factor as the frosting degree for measuring air-conditioning heat exchanger.
S102, according to the first outdoor coil temperature, refrigerant feed liquor temperature and refrigerant go out liquid temperature determine meet defrost into
After entering condition, the refrigerant of the refrigerant inlet pipe for the outdoor heat exchanger for flowing through air-conditioning is heated in control.
Here, air-conditioning presets a defrosting entry condition, can be according to acquiring when air-conditioning is run with heating mode
Parameter judge whether air-conditioning meets the defrosting entry condition；If it is satisfied, then air-conditioning need to outdoor heat exchanger into
Row defrosting；If conditions are not met, then air-conditioning is without defrosting to outdoor heat exchanger.
In the embodiments of the present disclosure, air-conditioning be according to the first outdoor coil temperature acquired in step S101, refrigerant into
Liquid temperature and refrigerant go out these three parameters of liquid temperature to whether meet defrosting entry condition judge；Among these, first is outdoor
Coil temperature can be more sensitive the refrigerant pipeline for reflecting outdoor heat exchanger temperature variations, refrigerant feed liquor temperature is then
It is to influence the internal temperature factor of the case temperature of outdoor heat exchanger, and refrigerant, which goes out liquid temperature, is worked as reflection outdoor heat exchanger
The reference factor of preceding frosting degree；In this way, the embodiment of the present disclosure combines whether above-mentioned three kinds of factor parameters jointly deposit air-conditioning
Judged in frosting problem, the judgement precision to air-conditioner defrosting can be greatly improved, so that the defrosting behaviour of air-conditioning triggering
Work can be more in line with the real-time frosting situation of air-conditioning.
In an alternative embodiment, the defrosting entry condition in step S102 includes:
△Te/ t >=V and TLiquid out-TFeed liquor≤△T；
Wherein, TeFor the first outdoor coil temperature, △ Te/ t is TeRate temperature change in unit time t, V are pre-
If rate temperature change threshold value；TLiquid outGo out liquid temperature, T for refrigerantFeed liquorFor refrigerant feed liquor temperature, △ T is preset temperature difference threshold.
In the defrosting entry condition, rate temperature change of the outdoor coil temperature within the unit time can embody air-conditioning
The variation speed situation of outdoor coil pipe used own temperature under internal and external environment joint effect；In general, good, empty in outdoor environment operating condition
When modulation heat operates normally, the temperature change fluctuation for flowing into the refrigerant of outdoor unit is little, therefore, the variation speed of outdoor coil temperature
Rate also fluctuates smaller；And when outdoor environment becomes the bad working environments for being easy to cause outdoor heat exchanger to coagulate frost, then by outdoor environment
The influence of temperature change, outdoor coil temperature decline is very fast, so that its rate temperature change can also generate biggish fluctuation；
In this way, one of the defrosting entry condition of the application is the temperature change speed according to outdoor coil temperature under operating condition outside different chamber
Carry out defrosting judgement.
Meanwhile the defrosting entry condition in the embodiment of the present disclosure also increases to have and goes out liquid temperature T to refrigerantLiquid outWith refrigerant feed liquor
Temperature TFeed liquorBetween temperature gap height judgement, if the two temperature gap is smaller, illustrate refrigerant heat absorption heating efficiency compared with
It is low, it may be possible to caused by air-conditioning frosting, therefore just to need to defrost to outdoor heat exchanger of air conditioner in that case；Cause
This, the defrosting entry condition of the application also introduces the sub- condition that defrosting judgement is carried out according to refrigerant liquid in-out temperature, with into one
Step improves the accuracy to defrosting judgement.
Therefore, the defrosting entry condition in the embodiment of the present disclosure has comprehensively considered parameter under different working conditions and has changed outdoor
The appearance for the problems such as frosting of hot device influences, and can effectively improve the judgement precision to air-conditioner defrosting, reduces erroneous judgement, false triggering.
In the embodiments of the present disclosure, true when going out liquid temperature according to the first outdoor coil temperature, refrigerant feed liquor temperature and refrigerant
After fixed satisfaction defrosting entry condition, the defrosting operation of air-conditioning includes the refrigerant inlet tube controlled to the outdoor heat exchanger for flowing through air-conditioning
The refrigerant on road is heated, to improve the temperature for the refrigerant for flowing into outdoor heat exchanger, at this time due to flowing into the cold of outdoor heat exchanger
Matchmaker's temperature is higher, and heat is transmitted to outdoor environment side, and the refrigerant heat after not only being improved using temperature melts room
The frost of external heat exchanger, while the refrigerant temperature that outflow outdoor heat exchanger can also be improved, be back to compressor, to enhance air-conditioning
Heating performance.
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；Therefore in step s 102, according to the first outdoor disk
After tube temperature degree, refrigerant feed liquor temperature and refrigerant go out the determining satisfaction defrosting entry condition of liquid temperature, unlatching heating device can control；
And the feelings that liquid temperature determines the entry condition that is unsatisfactory for defrosting are being gone out according to the first outdoor coil temperature, refrigerant feed liquor temperature and refrigerant
Under condition, then the closed state of heating device is kept.
In one embodiment, heating device is electromagnetic heater, and electromagnetic heater utilizes electromagnetic induction heating
Principle heats refrigerant pipeline, and then the refrigerant for flowing through refrigerant pipeline is conducted heat to using refrigerant pipeline, cold to reach heating
The purpose of matchmaker.
Here, the corresponding refrigerant pipe section heated of electromagnetic heater is the pipeline section of the metal materials such as copper or irony,
Electromagnetic heater is mainly made of induction coil and power supply module, and induction coil is wound in above-mentioned refrigerant pipeline here
Section, power supply module can provide alternating current for induction coil；When induction coil is powered, the alternating current of induction coil is flowed through
The alternating magnetic field for passing through refrigerant pipe section is generated, which can make refrigerant inner tube segment generate vortex, so as to rely on
The energy of these vortex plays the role of heat temperature raising.
It is filled it should be understood that the type for the heating device that the application is used to heat refrigerant is not limited to above-mentioned electromagnetic heating
It sets, the other types of heating device that can be used in directly or indirectly heating refrigerant can also be using the application's in the related technology
Technical solution, and cover within the scope of protection of this application.
In an alternative embodiment, the refrigerant feed liquor to the outdoor heat exchanger for flowing through air-conditioning is being controlled in step S102
When the refrigerant of pipeline is heated, heating parameters first can be determined according to rate temperature change or temperature gap, then basis adds
Thermal parameter executes corresponding heating operation.Among these, temperature gap includes: that refrigerant goes out between liquid temperature and refrigerant feed liquor temperature
Temperature gap；Heating parameters include the rate of heat addition and/or heating duration to the refrigerant for flowing through refrigerant inlet pipe.
Here, rate temperature change and temperature gap are to be respectively used to sentencing to one of the sub- condition of defrosting entry condition
It is disconnected；It, can be according to the first rate temperature change and temperature gap when therefore determining satisfaction defrosting entry condition in step s 102
Speculate the frosting degree of outdoor heat exchanger, and then according to the different selections of frosting degree to the refrigerant for flowing through refrigerant inlet pipe
The rate of heat addition and/or heating duration.
For example, when the frosting degree of outdoor heat exchanger is higher, then setting is very fast to the rate of heat addition of refrigerant, with raising pair
The heat temperature raising speed of refrigerant can meet defrosting temperature requirement as early as possible；And setting is longer to the heating duration of refrigerant,
So that refrigerant heat, which has time enough to conduct to the outer surface of outdoor heat exchanger, carries out defrost；Conversely, in outdoor heat exchanger
When frosting degree is lower, then setting is lower to the rate of heat addition of refrigerant, heating duration is shorter, to reduce the function of heating device operation
Consumption, reduces the use cost of air-conditioning.
Optionally, the rate of heat addition to the refrigerant for flowing through refrigerant inlet pipe is determined according to rate temperature change, comprising: root
According to rate temperature change, corresponding first rate of heat addition is obtained from first rate incidence relation, according to first rate of heat addition
It is heated.
It here, include that one or more rate temperature changes are corresponding with first rate of heat addition in first rate incidence relation
Relationship.Here, the corresponding relationship of a kind of optional rate temperature change and first rate of heat addition is shown in table 1, such as following table institute
Show,
| Rate temperature change (unit: DEG C/min) | First rate of heat addition (unit: DEG C/min) |
| V1 < △ Te/t≤V2 | v11 |
| V2 < △ Te/to≤V3 | v12 |
| V3 < △ Te/to | v13 |
Table 1
In first rate incidence relation, first rate of heat addition and rate temperature change are to be positively correlated.That is rate temperature change
Bigger, then first rate of heat addition is higher；And the first temperature gap is smaller, then first rate of heat addition is lower.
It therefore, can first basis when in executing step S102 to the heating operation for the refrigerant for flowing through refrigerant inlet pipe
Then corresponding first rate of heat addition of first rate incidence relation temperature rate of change is carried out according to first rate of heat addition
Heating.
It is another optional, the rate of heat addition to the refrigerant for flowing through refrigerant inlet pipe is determined according to temperature gap, comprising: root
According to temperature gap, corresponding second rate of heat addition is obtained from the second rate incidence relation, to carry out according to second rate of heat addition
Heating；
Here, include that one or more temperature gaps are corresponding with second rate of heat addition in the second rate incidence relation to close
System.Here, the corresponding relationship of a kind of optional temperature gap and second rate of heat addition is shown in table 2, as shown in the table,
Table 2
In second rate incidence relation, second rate of heat addition and temperature gap are negative correlation.I.e. temperature gap is bigger, then and
Two rates of heat addition are lower；And temperature gap is smaller, then second rate of heat addition is higher.
It therefore, can first basis when in executing step S102 to the heating operation for the refrigerant for flowing through refrigerant inlet pipe
Corresponding second rate of heat addition of second rate incidence relation temperature difference, is then added according to second rate of heat addition
Heat.
In the above-described embodiments, since the height of the frosting degree of outdoor heat exchanger is to outdoor coil pipe used rate temperature change
And the temperature change of temperature gap influences amplitude difference, therefore the application is to be each provided with an individual incidence relation, it is empty
Tune can select according to actual needs one of incidence relation to determine the corresponding rate of heat addition.
Optionally, the rate incidence relation specifically selected can be determined according to the heating needs of active user, for example, working as
When the heating needs of preceding user are lower, then first rate incidence relation is selected, mainly considers rate temperature change institute at this time
The influence to defrosting effect such as corresponding outdoor coil temperature；And when the heating needs of active user are higher, then select second
Rate incidence relation, at this time mainly in view of the refrigerant for being able to reflect the refrigerant temperature height for being back to compressor goes out liquid temperature
The size that suffered outdoor heat exchanger frosting influences, so that refrigerant also can be improved refrigerant suction temperature after heating, to guarantee to heat
Performance.
Here, the heating needs of active user can heat temperature by the target set to air-conditioning and be determined；For example,
Air-conditioning is preset with a heating temperature threshold, when the target of user's actual set heating temperature is less than the heating temperature threshold, then
Illustrate that the heating needs of user at this time are lower；And when the target of user's actual set heating temperature is greater than or equal to the heating temperature
When threshold value, then illustrate the heating needs height of user at this time.
In this way, air-conditioning can not only be timely triggered in the embodiment of the present disclosure according to the practical frosting situation of air-conditioning for outdoor
The defrosting of heat exchanger operates, while the heating that user can also be taken into account when executing the defrosting heated to refrigerant and operating needs
It asks, to fully ensure that air-conditioning during defrosting to the control requirement of users'comfort.
It similarly, in some alternative embodiments, can also be according to rate temperature change, from the first duration incidence relation
Corresponding first heating duration is obtained, to be heated according to the first heating duration.
Here, in the first duration incidence relation, the first heating duration and rate temperature change are to be positively correlated.
Alternatively, according to temperature gap, corresponding second heating duration is obtained from the second duration incidence relation, according to the
Two heating durations are heated.
Here, in the second duration incidence relation, the second heating duration and second temperature difference are negative correlation.
In the above-described embodiments, the first heating duration is obtained according to rate temperature change and obtains the according to temperature gap
The mode of two heating durations is referred to the control flow above-mentioned for obtaining the rate of heat addition, and therefore not to repeat here.
In some alternative embodiments, in control to the refrigerant of the refrigerant inlet pipe for the outdoor heat exchanger for flowing through air-conditioning
After being heated, further includes: obtain the second outdoor coil temperature；Determining that meeting defrosting exits according to the second outdoor coil temperature
After condition, control stops heating.
Wherein, defrosting exit criteria includes: that the second outdoor coil temperature is greater than or equal to preset external disk temperature threshold value and holds
Continuous setting duration.
In the embodiments of the present disclosure, air-conditioning is during heating the refrigerant for flowing through refrigerant inlet pipe, in real time
The outdoor coil temperature according to air-conditioning carry out to defrosting exit criteria judgement operation, with meet defrosting exit criteria feelings
Stop the heating operation to refrigerant under condition, so that the power consumption of heating operation be effectively reduced.
Fig. 2 is the flow diagram for the control method for air-conditioner defrosting that the another embodiment of the disclosure provides.
As shown in Fig. 2, the embodiment of the present disclosure provides another control method for air-conditioner defrosting, rate-determining steps master
Include:
S201, air-conditioning booting, are run with heating mode；
In the present embodiment, air-conditioning general user under the conditions of low temperature severe cold weather sets heating mode and opens as present mode
Machine operation.
S202, detection outdoor coil temperature Te, refrigerant feed liquor temperature TFeed liquorGo out liquid temperature T with refrigerantLiquid out；
S203, the rate temperature change △ T for calculating outdoor coil temperature Tee/t；
S204, judge whether △ Te/ t >=V and TLiquid out-TFeed liquor≤ △ T, if so, S205 is thened follow the steps, if it is not, then
Return to step S202；
In the embodiments of the present disclosure, △ Te/ t >=V and TLiquid out-TFeed liquor≤ △ T collectively forms preset defrosting entry condition.
If meeting the defrosting entry condition, illustrate that outdoor heat exchanger of air conditioner has frosting at this time；And if not
Meet the defrosting entry condition, then illustrates that frosting problem is not present in outdoor heat exchanger of air conditioner at this time.
S205, according to △ Te/ t obtains corresponding first rate of heat addition from first rate incidence relation；
S206, according to △ Te/ t obtains corresponding first heating duration from the first duration incidence relation；
In the embodiments of the present disclosure, the specific executive mode of step S205 and S206 may refer to embodiment hereinbefore,
Therefore not to repeat here.
S207, heating device is opened according to first rate of heat addition and the first heating duration；Process terminates.
In the embodiments of the present disclosure, heating device is set in the refrigerant inlet pipe of outdoor heat exchanger under heating mode,
It is configured as heating the refrigerant for flowing through the refrigerant inlet pipe.
Optionally, heating device is electromagnetic heater, therefore can pass through change for the adjusting of first rate of heat addition
The parameters such as the operating current or voltage of electromagnetic heater are realized.
The control method for air-conditioner defrosting that the embodiment of the present disclosure provides can be according to the outdoor coil pipe used temperature acquired
Degree, refrigerant feed liquor temperature and refrigerant go out the judgement whether these parametric synthesis of liquid temperature meet defrosting entry condition to air-conditioning,
So as to effectively improve the control precision to control air-conditioner defrosting；And pass through the heating to the refrigerant for flowing through refrigerant inlet pipe
Operation can effectively improve the refrigerant temperature for flowing into outdoor heat exchanger, and then be melted using refrigerant heat and be coagulated on outdoor heat exchanger
The frost of knot, to reduce frost condensation to the adverse effect of air-conditioning itself heating performance.
Fig. 3 is the structural schematic diagram for the control device for air-conditioner defrosting that the embodiment of the present disclosure provides.
The embodiment of the present disclosure provides a kind of control device for air-conditioner defrosting, and structure is as shown in Figure 3, comprising:
Processor (processor) 300 and memory (memory) 301 can also include communication interface
(Communication Interface) 302 and bus 303.Wherein, processor 300, communication interface 302, memory 301 can
To complete mutual communication by bus 303.Communication interface 302 can be used for information transmission.Processor 300 can be called and be deposited
Logical order in reservoir 301, to execute the control method for air-conditioner defrosting of above-described embodiment.
In addition, the logical order in above-mentioned memory 301 can be realized by way of SFU software functional unit and conduct
Independent product when selling or using, can store in a computer readable storage medium.
Memory 301 is used as a kind of computer readable storage medium, can be used for storing software program, journey can be performed in computer
Sequence, such as the corresponding program instruction/module of the method in the embodiment of the present disclosure.Processor 300 is stored in memory 301 by operation
In program instruction/module, thereby executing functional application and data processing, i.e., in realization above method embodiment for sky
Adjust the control method of defrosting.
Memory 301 may include storing program area and storage data area, wherein storing program area can storage program area,
Application program needed at least one function；Storage data area, which can be stored, uses created data etc. according to terminal device.
In addition, memory 301 may include high-speed random access memory, it can also include nonvolatile memory.
Fig. 4 is the structural schematic diagram for the air-conditioning that the embodiment of the present disclosure provides.
As shown in figure 4, disclosure implementation additionally provides a kind of air-conditioning, comprising:
Refrigerant circulation circuit passes through refrigerant by outdoor heat exchanger 41, indoor heat exchanger 42, throttling set 43 and compressor 44
Piping connection is constituted；
Heating device 45 is set 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；
For the control device 46 of air-conditioner defrosting, it is electrically connected with heating device 45.Here, the control for being used for air-conditioner defrosting
Device is control device shown in embodiment above.
Air-conditioning in the embodiment of the present disclosure can be detected accurately and judge that air-conditioning whether there is frosting problem, and in sky
In the case that tune has frosting, corresponding defrosting operation is carried out using above-mentioned control device and heating device, to reduce
The frost amount condensed on outdoor heat exchanger of air conditioner guarantees that air-conditioning can be normally to indoor environment system under the conditions of low temperature harsh climate
Heat promotes the usage experience of user.
The embodiment of the present disclosure additionally provides a kind of computer readable storage medium, is stored with computer executable instructions, institute
It states computer executable instructions and is arranged to carry out the above-mentioned method for air-conditioner defrosting.
The embodiment of the present disclosure additionally provides a kind of computer program product, and the computer program product includes being stored in meter
Computer program on calculation machine readable storage medium storing program for executing, the computer program include program instruction, when described program instruction is counted
When calculation machine executes, the computer is made to execute the above-mentioned method for air-conditioner defrosting.
Above-mentioned computer readable storage medium can be transitory computer readable storage medium, be also possible to non-transient meter
Calculation machine readable storage medium storing program for executing.
The technical solution of the embodiment of the present disclosure can be embodied in the form of software products, which deposits
Storage in one storage medium, including one or more instruction is used so that computer equipment (can be personal computer,
Server or the network equipment etc.) execute embodiment of the present disclosure the method all or part of the steps.And storage above-mentioned is situated between
Matter can be non-transient storage media, comprising: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), with
Machine accesses a variety of Jie that can store program code such as memory (RAM, Random Access Memory), magnetic or disk
Matter is also possible to transitory memory medium.
Above description and attached drawing sufficiently illustrate embodiment of the disclosure, to enable those skilled in the art to practice
They.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment only represents
Possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can change.
The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.The embodiment of the present disclosure
Range includes the entire scope of claims and all obtainable equivalents of claims.When for the application
When middle, although term " first ", " second " etc. may be used in this application to describe each element, these elements should not be by
To the limitation of these terms.These terms are only used to differentiate an element with another element.For example, not changing description
Meaning in the case where, first element can be called second element, and same, and second element can be called first element,
As long as " first element " that is occurred unanimously renames and " second element " occurred unanimously renames.First
Element and second element are all elements, but can not be identical element.Moreover, word used herein is only used for describing
Embodiment and it is not used in limitation claim.As used in the description in embodiment and claim, unless context
It clearly illustrates, otherwise "one" (a) of singular, "one" (an) and " described " (the) is intended to equally include plural shape
Formula.Similarly, term "and/or" refers to and associated lists comprising one or more as used in this specification
Any and all possible combination.In addition, when in the application, term " includes " (comprise) and its modification " packet
Include " (comprises) and/or feature, entirety, step, operation, element and/or group including the statement such as (comprising) fingers
The presence of part, but it is not excluded for one or more other features, entirety, step, operation, element, component and/or these point
The presence or addition of group.In the absence of more restrictions, the element limited by sentence " including one ... ", it is not excluded that
There is also other identical elements in process, method or equipment including the element.Herein, each embodiment emphasis is said
Bright can be the difference from other embodiments, and the same or similar parts in each embodiment can refer to each other.For
For method, product disclosed in embodiment etc., if it is corresponding with method part disclosed in embodiment, related place can
Referring to the description of method part.
It will be appreciated by those of skill in the art that unit described in conjunction with the examples disclosed in the embodiments of the present disclosure and
Algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually with hard
Part or software mode execute, and can depend on the specific application and design constraint of technical solution.The technical staff
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The range of the embodiment of the present disclosure.The technical staff can be understood that, for convenience and simplicity of description, foregoing description
The specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, no longer superfluous herein
It states.
In embodiments disclosed herein, disclosed method, product (including but not limited to device, equipment etc.) can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
Divide, can be only a kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or
Component can be combined or can be integrated into another system, or some features can be ignored or not executed.In addition, shown
Or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit it is indirect
Coupling or communication connection can be electrical property, mechanical or other forms.The unit as illustrated by the separation member can be or
Person, which may not be, to be physically separated, and component shown as a unit may or may not be physical unit
With in one place, or may be distributed over multiple network units.Portion therein can be selected according to the actual needs
Point or whole unit realize the present embodiment.In addition, each functional unit in the embodiments of the present disclosure can integrate at one
In processing unit, it is also possible to each unit and physically exists alone, a list can also be integrated in two or more units
In member.
The flow chart and block diagram in the drawings show system, the method and computer program products according to the embodiment of the present disclosure
Architecture, function and operation in the cards.In this regard, each box in flowchart or block diagram can represent one
A part of module, section or code, a part of the module, section or code include it is one or more for realizing
The executable instruction of defined logic function.In some implementations as replacements, function marked in the box can also be with
Occur different from the sequence marked in attached drawing.For example, two continuous boxes can actually be basically executed in parallel, they
Sometimes it can also execute in the opposite order, this can be depended on the functions involved.Flow chart and block diagram institute in the accompanying drawings
In corresponding description, operation corresponding to different boxes or step can also be to be different from sequence hair disclosed in description
Raw, there is no specific sequences between sometimes different operations or step.For example, two continuous operations or step actually may be used
To be basically executed in parallel, they can also be executed in the opposite order sometimes, this can be depended on the functions involved.Block diagram
And/or the combination of each box in flow chart and the box in block diagram and or flow chart, it can the function as defined in executing
Can or the dedicated hardware based system of movement realize, or can come using a combination of dedicated hardware and computer instructions real
It is existing.
Claims (10)
1. a kind of control method for air-conditioner defrosting characterized by comprising
In the operation of air conditioner heating mode processes, obtains the first outdoor coil temperature, refrigerant feed liquor temperature and refrigerant and go out liquid
Temperature；
Satisfaction defrosting is determined going out liquid temperature according to first outdoor coil temperature, the refrigerant feed liquor temperature and the refrigerant
After entry condition, the refrigerant of the refrigerant inlet pipe for the outdoor heat exchanger for flowing through the air-conditioning is heated in control.
2. control method according to claim 1, which is characterized in that the defrosting entry condition includes:
△Te/ t >=V and TLiquid out-TFeed liquor≤△T；
Wherein, the TeFor first outdoor coil temperature, the △ Te/ t is the TeTemperature in unit time t becomes
Change rate, V is preset rate temperature change threshold value；The TLiquid outGo out liquid temperature, the T for the refrigerantFeed liquorFor the refrigerant
Feed liquor temperature, △ T are preset temperature difference threshold.
3. control method according to claim 1, which is characterized in that described pair of outdoor heat exchanger for flowing through the air-conditioning
The heating parameters that the refrigerant of refrigerant inlet pipe is heated are determined according to the rate temperature change or temperature gap；
Wherein, the temperature gap includes: the temperature gap that the refrigerant goes out between liquid temperature and the refrigerant feed liquor temperature；
The heating parameters include the rate of heat addition and/or heating duration to the refrigerant for flowing through the refrigerant inlet pipe.
4. control method according to claim 3, which is characterized in that determined according to the rate temperature change to flowing through
State the rate of heat addition of the refrigerant of refrigerant inlet pipe, comprising:
According to the rate temperature change, corresponding first rate of heat addition is obtained from first rate incidence relation, according to institute
First rate of heat addition is stated to be heated.
5. control method according to claim 3, which is characterized in that according to temperature gap determine to flow through the refrigerant into
The rate of heat addition of the refrigerant of liquid pipeline, comprising:
According to the temperature gap, corresponding second rate of heat addition is obtained from the second rate incidence relation, according to described
Two rates of heat addition are heated.
6. control method according to claim 3, which is characterized in that determined according to the rate temperature change to flowing through
State the heating duration of the refrigerant of refrigerant inlet pipe, comprising:
According to the rate temperature change, corresponding first heating duration is obtained from the first duration incidence relation, according to institute
The first heating duration is stated to be heated.
7. control method according to claim 3, which is characterized in that according to temperature gap determine to flow through the refrigerant into
The heating duration of the refrigerant of liquid pipeline, comprising:
According to the temperature gap, corresponding second heating duration is obtained from the second duration incidence relation, according to described the
Two heating durations are heated.
8. control method according to any one of claims 1 to 7, which is characterized in that in control to flowing through the air-conditioning
After the refrigerant of the refrigerant inlet pipe of outdoor heat exchanger is heated, further includes:
Obtain the second outdoor coil temperature；
After determining satisfaction defrosting exit criteria according to second outdoor coil temperature, control stops heating；
Wherein, the defrosting exit criteria includes: that the second outdoor coil temperature is greater than or equal to preset external disk temperature threshold value and holds
Continuous setting 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 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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Cited By (1)
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|---|---|---|---|---|
| WO2022227567A1 (en) * | 2021-04-28 | 2022-11-03 | 青岛海尔空调器有限总公司 | Control method for dual compressor air conditioner |
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