CN110469970A - 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 PDF

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Publication number
CN110469970A
CN110469970A CN201910675274.3A CN201910675274A CN110469970A CN 110469970 A CN110469970 A CN 110469970A CN 201910675274 A CN201910675274 A CN 201910675274A CN 110469970 A CN110469970 A CN 110469970A
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CN
China
Prior art keywords
refrigerant
temperature
air
heating
outdoor
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Granted
Application number
CN201910675274.3A
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Chinese (zh)
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CN110469970B (en
Inventor
许文明
罗荣邦
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Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
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Priority to CN201910675274.3A priority Critical patent/CN110469970B/en
Publication of CN110469970A publication Critical patent/CN110469970A/en
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Classifications

    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2347/00—Details for preventing or removing deposits or corrosion
    • F25B2347/02—Details of defrosting cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/31—Low ambient temperatures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

This application involves air-conditioner defrosting technical fields, disclose a kind of control method for air-conditioner defrosting.Control method includes: to obtain indoor coil pipe, outdoor coil temperature, refrigerant feed liquor temperature and refrigerant in operation of air conditioner heating mode processes and go out liquid temperature；After going out liquid temperature according to indoor coil pipe, outdoor coil temperature, refrigerant feed liquor temperature and refrigerant and determining satisfaction defrosting entry condition, the refrigerant inlet pipe of outdoor heat exchanger and the refrigerant on refrigerant outlet tube road are heated in control.The control method can go out the judgement whether liquid temperature meets defrosting entry condition to air-conditioning according to indoor coil pipe, 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 and refrigerant outlet tube road, frost condensation is reduced to the adverse effect of air-conditioning itself heating performance.A kind of control device and air-conditioning for air-conditioner defrosting is also disclosed in the application.

Description

For the control method of air-conditioner defrosting, device and air-conditioning
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, indoor coil pipe, outdoor coil temperature, refrigerant feed liquor temperature are obtained Degree and refrigerant go out liquid temperature；
Go out according to the indoor coil pipe, the outdoor coil temperature, the refrigerant feed liquor temperature and the refrigerant Liquid temperature determines meet defrosting entry condition after, control to the refrigerant inlet pipe of the outdoor heat exchanger for flowing through the air-conditioning and cold The refrigerant on matchmaker's outlet tube road heats.
In some embodiments, the control device for air-conditioner defrosting includes:
Processor and the memory for being stored with program instruction, the processor is configured to executing described program instruction When, execute such as above-mentioned some control methods as described in the examples for air-conditioner defrosting.In some embodiments, the sky It adjusts, comprising:
Refrigerant circulation circuit is connected by outdoor heat exchanger, indoor heat exchanger, throttling set and compressor by refrigerant pipeline It constitutes；
First heater is set in the refrigerant inlet pipe of the outdoor heat exchanger in a heating mode, is configured To be heated to the refrigerant for flowing through the refrigerant inlet pipe；
Secondary heating mechanism is set to the outdoor heat exchanger on the refrigerant outlet tube road under the heating mode, quilt It is configured to heat the refrigerant for flowing through refrigerant outlet tube road；
Such as above-mentioned some control devices as described in the examples for air-conditioner defrosting, filled respectively with first heating It sets, secondary heating mechanism electrical connection.
The embodiment of the present disclosure provide for the control method of air-conditioner defrosting, device and air-conditioning, following technology may be implemented Effect:
The control method for air-conditioner defrosting that the embodiment of the present disclosure provides can be according to the indoor coil temperature acquired Degree, outdoor coil temperature, refrigerant feed liquor temperature and refrigerant go out these parametric synthesis of liquid temperature whether air-conditioning is met defrost into Enter the judgement of condition, so as to effectively improve the control precision to control air-conditioner defrosting；And by flowing through refrigerant inlet tube The heating operation of the refrigerant on road and refrigerant outlet tube road can either effectively improve the refrigerant temperature, in turn for flowing into outdoor heat exchanger Melt the frost condensed on outdoor heat exchanger using refrigerant heat, can also be improved the refrigerant temperature for being back to compressor, thus Heating efficiency is promoted, reduces 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 indoor coil pipe, outdoor coil temperature, refrigerant feed liquor Temperature and refrigerant go out liquid temperature；
In embodiment, when frosting problem occurs in the outdoor heat exchanger of air-conditioner outdoor unit, outdoor environment is mostly in temperature Lower, the biggish bad working environments of humidity, user is usually that air-conditioning is set as heating mode operation at this time, to utilize air-conditioning to room Interior environment carries out heating heating.Therefore the control method for air-conditioner defrosting that the embodiment of the present disclosure provides is in air-conditioning to heat The control flow enabled when mode operation.
When air-conditioning is with other such as refrigeration modes, the operation of dehumidification mode isotype, the room as corresponding to these modes The problem of outer operating condition is generally not in air-conditioner outdoor unit frosting, thus it is optional, it is run in air-conditioning with other non-heating modes When, the corresponding flow control process of the control method does not enable, and misses to avoid air-conditioning in operation refrigeration mode, dehumidification mode isotype Triggering is acted for the defrosting of outdoor heat exchanger, is influenced air-conditioning and is normally freezed or dehumidification work process.
In an alternative embodiment, the coil pipe position of the indoor heat exchanger of air conditioner indoor unit is provided with one first temperature Sensor, first temperature sensor can be used for detecting the real time temperature of its coil pipe position；Therefore, institute in step s101 The indoor coil pipe of acquisition can be the real time temperature by coil pipe position detected by first temperature sensor.
In the embodiments of the present disclosure, the temperature change of the coil pipe position of indoor heat exchanger is by the cold of inflow indoor heat exchanger The temperature of matchmaker directly affects, thus can reflect from side air-conditioning to the situation of change of the heating capacity of indoor environment, by It can change therewith in the heating capacity of the air-conditioning under different frosting situations, therefore indoor coil pipe is air-conditioner outdoor unit knot Reference factor of the white situation to the influence of fading height of air-conditioning heating ability.
In an alternative embodiment, one second temperature is provided at the coil pipe position of the outdoor heat exchanger of air-conditioner outdoor unit Sensor is spent, which can be used for detecting the real time temperature of its coil pipe position；Therefore, in step s101 Acquired outdoor coil temperature can be the real time temperature by coil pipe position detected by the second temperature sensor.
In the embodiments of the present disclosure, the temperature change of the coil pipe position of outdoor heat exchanger is can intuitively to reflect in outside Outdoor environment temperature and internal refrigerant temperature joint effect under outdoor heat exchanger refrigerant pipeline temperature variations, separately It is outside typically also the pipeline position that outdoor heat exchanger is easy to appear frosting problem；Therefore the outdoor coil temperature got can be made To measure the reference factor that air-conditioning inside and outside influences the frosting that outdoor heat exchanger generates jointly.
In an alternative embodiment, the outdoor unit of air-conditioning is additionally provided with a third temperature sensor, the third temperature Sensor can be used for detecting the real time temperature of the 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 third 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 one the 4th temperature sensor, the 4th temperature Sensor can be used for detecting the real time temperature of the refrigerant on the refrigerant outlet tube road for flowing through outdoor heat exchanger；Therefore, in step S101 In acquired refrigerant outlet tube road can be the real time temperature of the refrigerant detected by the 4th temperature sensor；
Here, when refrigerant outlet tube road is run for air-conditioning with heating mode refrigerant outflow outdoor heat exchanger via pipe Road.
In the embodiments of the present disclosure, the temperature for flowing out the refrigerant of outdoor heat exchanger is to can reflect out outdoor heat exchanger and room The heat exchanger effectiveness of external environment, and heat exchanger effectiveness then will receive the influence of the frosting degree of outdoor heat exchanger；Here, in air-conditioning Frosting degree is lower, in the case where frost thinner thickness, and influence of the frost to heat exchange is smaller, cold after flowing through outdoor heat exchanger The heat that matchmaker is absorbed is more；And in the case where air-conditioning frosting degree is higher, frost thickness is thicker, shadow of the frost to heat exchange Sound is larger, and the heat that the refrigerant after flowing through outdoor heat exchanger is absorbed is less.Therefore the refrigerant that acquires go out liquid temperature can be with Reference factor as the frosting degree for measuring air-conditioning heat exchanger.
S102, the determination of liquid temperature is being gone out completely according to indoor coil pipe, outdoor coil temperature, refrigerant feed liquor temperature and refrigerant After foot defrosting entry condition, control to the refrigerant inlet pipe for the outdoor heat exchanger for flowing through air-conditioning and the refrigerant on refrigerant outlet tube road It is heated.
Here, air-conditioning presets a defrosting entry condition, can be according to acquiring when air-conditioning is run with heating mode Parameter judge whether air-conditioning meets the defrosting entry condition；If it is satisfied, then air-conditioning need to outdoor heat exchanger into Row defrosting；If conditions are not met, then air-conditioning is without defrosting to outdoor heat exchanger.
In the embodiments of the present disclosure, air-conditioning is according to indoor coil pipe acquired in step S101, outdoor coil pipe used temperature Degree, refrigerant feed liquor temperature and refrigerant go out these parameters of liquid temperature to whether meeting defrosting entry condition and judge；Among these, Indoor coil pipe is able to reflect the attenuation degree of its heating performance under the influence of air-conditioning frosting, and outdoor coil temperature can be more The temperature variations of the sensitive refrigerant pipeline for reflecting outdoor heat exchanger, refrigerant feed liquor temperature are then to influence outdoor heat exchanger Case temperature internal temperature factor, and refrigerant go out liquid temperature be as reflection the current frosting degree of outdoor heat exchanger reference Factor；Air-conditioning is sentenced with the presence or absence of frosting problem jointly in this way, the embodiment of the present disclosure combines above-mentioned many factors parameter It is disconnected, the judgement precision to air-conditioner defrosting can be greatly improved, so that the defrosting operation of air-conditioning triggering can be more in line with sky Adjust real-time frosting situation.
In an alternative embodiment, the defrosting entry condition in step S102 includes:
Tp- T1≤△ T1, T2-Te>=△ T2, TLiquid out-TFeed liquor≤ △ T3, and TLiquid out-Te≤△T4；
Wherein, TpFor indoor coil pipe, TeFor outdoor coil temperature, TLiquid outGo out liquid temperature, T for refrigerantFeed liquorFor refrigerant feed liquor Temperature, T1 are initial indoor coil pipe when air-conditioning is switched on, and T2 is initial outdoor coil temperature when air-conditioning is switched on, and △ T1 is Preset first temperature difference threshold, △ T2 are preset second temperature difference threshold, and △ T3 is preset third temperature difference threshold, and △ T4 is pre- If the 4th temperature difference threshold.
In the defrosting entry condition, the temperature gap between indoor coil pipe and initial indoor coil pipe is able to reflect Heating capacity after air-conditioning booting is strong and weak.For example, air-conditioning heating ability decline, air-conditioning is opened in air-conditioning there are in the case where frosting The ascensional range of indoor coil pipe is limited after machine, thus the obtained indoor coil pipe of detection and initial indoor coil pipe it Between difference it is smaller；And the air-conditioning non-frosting the case where, air-conditioning heating ability is normal, and indoor coil pipe is upper after air-conditioning booting Increasing degree degree is larger, therefore the difference detected between obtained indoor coil pipe and initial indoor coil pipe is larger.
And the temperature gap between outdoor coil temperature and initial outdoor coil temperature can embody air-conditioning internal and external environment The situation of change of outdoor coil pipe used own temperature under joint effect；In general, outdoor environment operating condition is good, air-conditioning heating is normally transported When row, therefore, outdoor coil temperature is limited compared to the variable quantity of initial outdoor coil temperature；And when outdoor environment becomes easy Cause outdoor heat exchanger coagulate frost bad working environments when, then by outdoor environment temperature variation influenced, outdoor coil temperature decline compared with Fastly, so that it can also generate biggish fluctuation compared to the variable quantity of initial outdoor coil temperature；In this way, the application's removes One of white entry condition is to carry out defrosting judgement according to outdoor coil temperature under operating condition outside different chamber.
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.
In addition, when air-conditioning has frosting, due to the barrier of frost layer, between outdoor heat exchanger and outdoor environment Heat exchanger effectiveness reduce, at this time refrigerant temperature be influence outdoor coil temperature principal element, therefore when refrigerant go out liquid temperature with When temperature gap between outdoor coil temperature is smaller, then illustrate that there may be frosting problems for outdoor heat exchanger of air conditioner at this time.
Therefore, the defrosting entry condition in the embodiment of the present disclosure has comprehensively considered parameter under different working conditions and has changed outdoor The appearance for the problems such as frosting of hot device influences, and can effectively improve the judgement precision to air-conditioner defrosting, reduces erroneous judgement, false triggering.
In the embodiments of the present disclosure, when according to indoor coil pipe, outdoor coil temperature, refrigerant feed liquor temperature and refrigerant After liquid temperature determines satisfaction defrosting entry condition out, the defrosting operation of air-conditioning includes control to the outdoor heat exchanger for flowing through air-conditioning The refrigerant on refrigerant inlet pipe and refrigerant outlet tube road is heated.
Wherein, the temperature for flowing into the refrigerant of outdoor heat exchanger the heating for the refrigerant for flowing through refrigerant inlet pipe can be improved Degree, at this time since the refrigerant temperature for flowing into outdoor heat exchanger is higher, heat is transmitted to outdoor environment side, not only can benefit Refrigerant heat after being improved with temperature melts the frost of outdoor heat exchanger, while can also improve outflow outdoor heat exchanger, reflux To the refrigerant temperature of compressor, to enhance the heating performance of air-conditioning.
And refrigerant can compensate for during outdoor heat exchanger defrost to the heating of the refrigerant for flowing through refrigerant outlet tube road Thermal loss, and can be further improved the refrigerant temperature for being back to compressor.
Optionally, it is provided with first heater at the refrigerant inlet pipe of outdoor heat exchanger of air conditioner, the heating device quilt It is set as controllably heating the refrigerant for flowing through refrigerant inlet pipe；It is provided at the refrigerant outlet tube road of outdoor heat exchanger Secondary heating mechanism, the heating device are arranged to controllably heat the refrigerant for flowing through refrigerant outlet tube road.
Therefore in step s 102, go out according to indoor coil pipe, outdoor coil temperature, refrigerant feed liquor temperature and refrigerant After liquid temperature determines satisfaction defrosting entry condition, it can control and open first heater and secondary heating mechanism；And in basis Indoor coil pipe, outdoor coil temperature, refrigerant feed liquor temperature and refrigerant go out the determination of liquid temperature and are unsatisfactory for defrosting entry condition In the case of, then keep the closed state of first heater and secondary heating mechanism.
In one embodiment, first heater and secondary heating mechanism are electromagnetic heater, electromagnetic heater It is the principle heating refrigerant pipeline using electromagnetic induction heating, and then is conducted heat to using refrigerant pipeline and flow through refrigerant pipeline Refrigerant, with achieve the purpose that heat refrigerant.
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 for flowing through refrigerant inlet pipe is heated in control in step S102 It is refrigerant feed liquor heating parameters first to be determined according to temperature gap, allows and execute corresponding add according to refrigerant feed liquor heating parameters Heat operation.
Among these, for refrigerant feed liquor heating parameters, temperature gap includes: initial outdoor coil temperature and outdoor coil pipe used temperature The first temperature gap between degree, or, refrigerant goes out the second temperature difference between liquid temperature and refrigerant feed liquor temperature；Refrigerant feed liquor Heating parameters include the rate of heat addition and/or heating duration to the refrigerant for flowing through refrigerant inlet pipe.
Here, the first temperature gap and second temperature difference are respectively used to one of the sub- condition of defrosting entry condition Judgement；It, can be poor according to the first temperature gap and second temperature when therefore determining satisfaction defrosting entry condition in step s 102 Value speculates 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 temperature gap, comprising: according to the One temperature gap obtains corresponding first rate of heat addition from first rate incidence relation, to carry out according to first rate of heat addition Heating.
It here, include that one or more first temperature gaps are corresponding with first rate of heat addition in first rate incidence relation Relationship.Here, the corresponding relationship of a kind of optional first temperature gap and first rate of heat addition is shown in table 1, such as following table institute Show,
First temperature gap (unit: DEG C) First rate of heat addition (unit: DEG C/min)
A1 < T2-Te≤a2 v11
A2 < T2-Te≤a3 v12
A3 < T2-Te v13
Table 1
In first rate incidence relation, first rate of heat addition and the first temperature gap are to be positively correlated.That is the first temperature gap Bigger, then first rate of heat addition is higher；And the first temperature gap is smaller, then first rate of heat addition is lower.
It therefore, can first basis when in executing step S102 to the heating operation for the refrigerant for flowing through refrigerant inlet pipe The first rate incidence relation determines corresponding first rate of heat addition of the first temperature gap, is then carried out according to first rate of heat addition Heating.
It is another optional, the rate of heat addition to the refrigerant for flowing through refrigerant inlet pipe is determined according to temperature gap, comprising: root According to second temperature difference, corresponding second rate of heat addition is obtained from the second rate incidence relation, according to second rate of heat addition It is heated.
It here, include that one or more second temperature differences are corresponding with second rate of heat addition in the second rate incidence relation Relationship.Here, the corresponding relationship of a kind of optional second temperature difference and second rate of heat addition is shown in table 2, such as following table institute Show,
Second temperature difference (unit: DEG C) Second rate of heat addition (unit: DEG C/min)
B1 < TLiquid out-TFeed liquor≤b2 v21
B2 < TLiquid out-TFeed liquor≤b3 v22
B3 < TLiquid out-TFeed liquor v23
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 The second rate incidence relation determines corresponding second rate of heat addition of second temperature difference, is then carried out according to second rate of heat addition Heating.
In the above-described embodiments, due to the height of the frosting degree of outdoor heat exchanger to outdoor coil pipe used temperature variation with And the temperature change of temperature gap influences amplitude difference, therefore the application is to be each provided with an individual incidence relation, air-conditioning One of incidence relation can be selected to determine the corresponding rate of heat addition according to actual needs.
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 the first temperature gap institute at this time Influence of the height of corresponding outdoor coil temperature to defrosting effect；And when the heating needs of active user are higher, then it selects 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 The size that outdoor heat exchanger frosting suffered by temperature influences, so that refrigerant also can be improved refrigerant suction temperature after heating, to guarantee Heating performance.
Here, the heating needs of active user can heat temperature by the target set to air-conditioning and be determined；For example, Air-conditioning is preset with a heating temperature threshold, when the target of user's actual set heating temperature is less than the heating temperature threshold, then Illustrate that the heating needs of user at this time are lower；And when the target of user's actual set heating temperature is greater than or equal to the heating temperature When threshold value, then illustrate the heating needs height of user at this time.
In this way, air-conditioning can not only be timely triggered in the embodiment of the present disclosure according to the practical frosting situation of air-conditioning for outdoor The defrosting of heat exchanger operates, while the heating that user can also be taken into account when executing the defrosting heated to refrigerant and operating needs It asks, to fully ensure that air-conditioning during defrosting to the control requirement of users'comfort.
It similarly, in some alternative embodiments, can also be according to the first temperature gap, from the first duration incidence relation Corresponding first heating duration is obtained, to be heated according to the first heating duration.
Here, in the first duration incidence relation, the first heating duration and the first temperature gap are to be positively correlated.
Alternatively, obtaining corresponding second heating duration, from the second duration incidence relation according to second temperature difference to press It is heated according to the second heating duration.
Here, in the second duration incidence relation, the second heating duration and second temperature difference are negative correlation.
In the above-described embodiments, the first heating duration is obtained according to the first temperature gap and is obtained according to second temperature difference It takes the mode of the second heating duration to be referred to the control flow above-mentioned for obtaining the rate of heat addition according to temperature gap, does not make herein It repeats.
In further embodiments, liquid heating parameters are gone out for refrigerant, temperature gap includes: outdoor coil temperature and initial The first temperature gap between outdoor coil temperature, or, refrigerant goes out the third temperature difference between liquid temperature and outdoor coil temperature Value；It includes the rate of heat addition and/or heating duration to the refrigerant for flowing through refrigerant outlet tube road that refrigerant, which goes out liquid heating parameters,.
In technology contents above, the first temperature gap and third temperature gap are also the entry condition that hereinbefore defrosts One of sub- condition；It, can be according to the first temperature gap and third when therefore determining satisfaction defrosting entry condition in step s 102 Temperature gap speculates influence of the outdoor heat exchanger frosting to air-conditioning heating performance, and then is selected according to the Different Effects of heating performance The rate of heat addition and heating duration to the refrigerant for flowing through refrigerant outlet tube road, to meet the heating performance needs of air-conditioning.
For example, larger to air-conditioning heating performance degradation, then setting is to refrigerant when the frosting degree of outdoor heat exchanger is higher The rate of heat addition it is very fast, to improve the heat temperature raising speed to the refrigerant of outflow, suction temperature requirement can be met as early as possible； And setting is longer to the heating duration of refrigerant, stream can be heated for a long time under outdoor heat exchanger frosting serious situation Out outdoor heat exchanger, flow back to the refrigerant of compressor；Conversely, then setting is to refrigerant when the frosting degree of outdoor heat exchanger is lower The rate of heat addition it is lower, heating duration it is shorter, with reduce first heater operation power consumption, reduce the use cost of air-conditioning.
Optionally, the rate of heat addition to the refrigerant for flowing through refrigerant outlet tube road is determined according to temperature gap, comprising: according to the One temperature gap obtains the corresponding third rate of heat addition from third speed incidence relation, to carry out according to the third rate of heat addition Heating.
It here, include that one or more first temperature gaps are corresponding with the third rate of heat addition in third speed incidence relation Relationship.Here, the corresponding relationship of a kind of optional first temperature gap and the third rate of heat addition is shown in table 3, such as following table institute Show,
First temperature gap (unit: DEG C) The third rate of heat addition (unit: DEG C/min)
C1 < T2-Te≤c2 v31
C2 < T2-Te≤c3 v32
C3 < T2-Te v33
Table 3
In third speed incidence relation, the third rate of heat addition and the first temperature gap are to be positively correlated.That is the first temperature gap Bigger, then the third rate of heat addition is higher；And the first temperature gap is smaller, then the third rate of heat addition is lower.
It therefore, can first basis when in executing step S102 to the heating operation for the refrigerant for flowing through refrigerant outlet tube road The third speed incidence relation determines the corresponding third rate of heat addition of the first temperature gap, is then carried out according to the third rate of heat addition Heating.
It is another optional, the rate of heat addition to the refrigerant for flowing through refrigerant outlet tube road is determined according to temperature gap, comprising: root According to third temperature gap, corresponding 4th rate of heat addition is obtained from fourth rate incidence relation, according to the 4th rate of heat addition It is heated.
It here, include that one or more third temperature gaps are corresponding with the 4th rate of heat addition in fourth rate incidence relation Relationship.Here, the corresponding relationship of a kind of optional third temperature gap and the 4th rate of heat addition is shown in table 4, such as following table institute Show,
Third temperature gap (unit: DEG C) 4th rate of heat addition (unit: DEG C/min)
D1 < TLiquid out-Te≤d2 v41
D2 < TLiquid out-Te≤d3 v42
D3 < TLiquid out-Te v43
Table 4
In fourth rate incidence relation, the 4th rate of heat addition and third temperature gap are to be positively correlated.That is third temperature gap Bigger, then the 4th rate of heat addition is higher；And third temperature gap is smaller, then the 4th rate of heat addition is lower.
It therefore, can first basis when in executing step S102 to the heating operation for the refrigerant for flowing through refrigerant outlet tube road The fourth rate incidence relation determines corresponding 4th rate of heat addition of third temperature gap, is then carried out according to the 4th rate of heat addition Heating.
In the above-described embodiments, the influence size due to the height of the frosting degree of outdoor heat exchanger to air-conditioning heating performance Difference, and then it is different to influence amplitude to the temperature change of the first temperature gap with third temperature gap, therefore the application is respective It is provided with an individual incidence relation, air-conditioning can select according to actual needs one of incidence relation to determine corresponding heating Rate.
Optionally, the rate incidence relation specifically selected is referred to technology contents shown in embodiment above, herein It does not repeat.
It similarly, in some alternative embodiments, can also be according to the first temperature gap, from third duration incidence relation Corresponding third heating duration is obtained, to be heated according to third heating duration.
Here, in third duration incidence relation, third heats duration and the first temperature gap is to be positively correlated.
Alternatively, obtaining corresponding 4th heating duration, from the 4th duration incidence relation according to third temperature gap to press It is heated according to the 4th heating duration.
Here, in the 4th duration incidence relation, the 4th heating duration and third temperature gap are to be positively correlated.
In the above-described embodiments, it is referred to according to the mode that temperature gap obtains heating duration above-mentioned according to temperature difference Value obtains the control flow of the rate of heat addition, and therefore not to repeat here.
In some alternative embodiments, according to indoor coil pipe, outdoor coil temperature, refrigerant feed liquor temperature and cold After matchmaker goes out the determining satisfaction defrosting entry condition of liquid temperature, further includes: control reduces the running frequency of the compressor of air-conditioning.
In embodiment, by reducing the running frequency of the compressor of air-conditioning, it can reduce refrigerant in outdoor heat exchanger Heat absorption rate, and then can weaken because refrigerant heat absorption caused by outdoor heat exchanger temperature further decrease, frosting degree adds The adverse effect of weight is removed in execution to what the refrigerant of refrigerant inlet pipe and refrigerant outlet tube road was heated to improve air-conditioning The defrosting effect of frost operation.
Here, it after air-conditioning exits defrosting, can control the running frequency for restoring compressor of air conditioner, exit defrosting to meet Air-conditioning normally heats the frequency requirement of work afterwards.
In other optional embodiment, according to indoor coil pipe, outdoor coil temperature, refrigerant feed liquor temperature and After refrigerant goes out the determining satisfaction defrosting entry condition of liquid temperature, further includes: control reduces revolving speed or the pass of the outdoor fan of air-conditioning Stop outdoor fan, and/or, control reduces the revolving speed of the indoor fan of air-conditioning.
In embodiment, pass through the revolving speed of the indoor fan of reduction air-conditioning, it is possible to reduce indoor heat exchanger and indoor environment Exchange rate so that indoor heat exchanger outflow after flow into outdoor heat exchanger refrigerant can retain more heat, can It improves using refrigerant heat to the defrosting effect of outdoor heat exchanger, the operation power consumption of heating devices heat refrigerant can also be reduced.
Meanwhile by shutting down outdoor fan, can also be reduced with the exchange rate of less outdoor heat exchanger and outdoor environment The cryogenic conditions of outdoor environment influence the unfavorable temperature of outdoor heat exchanger frosting, reduce the heat dissipation of the refrigerant heat of defrost, To guarantee the practical defrosting effect during defrosting.
In other optional embodiment, according to indoor coil pipe, outdoor coil temperature, refrigerant feed liquor temperature and After refrigerant goes out the determining satisfaction defrosting entry condition of liquid temperature, further includes: control increases the flow aperture of the throttling set of air-conditioning.
In embodiment, by increasing the flow aperture of the throttling set of air-conditioning, the throttling effect of throttling set can be reduced Fruit is able to maintain higher temperature to flow through the refrigerant of throttling set, to enable the subsequent refrigerant for flowing into outdoor heat exchanger Enough realize preferable defrosting effect.
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 indoor coil pipe Tp, outdoor coil temperature Te, refrigerant feed liquor temperature TFeed liquorGo out liquid temperature with refrigerant TLiquid out；
S203, judge whether Tp- T1≤△ T1, T2-Te>=△ T2, TLiquid out-TFeed liquor≤ △ T3, and TLiquid out-Te≤ △ T4, if It is to then follow the steps S204, if it is not, then returning to step S202；
In the embodiments of the present disclosure, Tp- T1≤△ T1, T2-Te>=△ T2, TLiquid out-TFeed liquor≤ △ T3, and TLiquid out-Te≤△T4 Collectively form 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.
S204, according to T2-Te, corresponding first rate of heat addition is obtained from first rate incidence relation, and according to T2- Te, corresponding first heating duration is obtained from the first duration incidence relation；
S205, according to T2-Te, the corresponding third rate of heat addition is obtained from third speed incidence relation, and according to T2-Te, Corresponding third heating duration is obtained from third duration incidence relation；
In the embodiments of the present disclosure, the specific executive mode of step S204 and S205 may refer to embodiment hereinbefore, Therefore not to repeat here.
S206, first heater is opened according to first rate of heat addition and the first heating duration, and according to third The rate of heat addition and third heating duration open secondary heating mechanism；
In the embodiments of the present disclosure, first heater is set to the refrigerant inlet pipe of outdoor heat exchanger under heating mode On, it is configured as heating the refrigerant for flowing through the refrigerant inlet pipe.Secondary heating mechanism is set to room under heating mode The refrigerant outlet tube road of external heat exchanger, is configured as heating the refrigerant for flowing through the refrigerant outlet tube road.
Optionally, heating device is electromagnetic heater, therefore for the tune of first rate of heat addition and the third rate of heat addition Section can be realized by parameters such as the operating current of change electromagnetic heater or voltages.
S207, control reduce the running frequency of compressor to first frequency；Process terminates.
The control method for air-conditioner defrosting that the embodiment of the present disclosure provides can be according to the indoor coil temperature acquired Degree, outdoor coil temperature, refrigerant feed liquor temperature and refrigerant go out these parametric synthesis of liquid temperature whether air-conditioning is met defrost into Enter the judgement of condition, so as to effectively improve the control precision to control air-conditioner defrosting；And by flowing through refrigerant inlet tube The heating operation of the refrigerant on road and refrigerant outlet tube road can either effectively improve the refrigerant temperature, in turn for flowing into outdoor heat exchanger Melt the frost condensed on outdoor heat exchanger using refrigerant heat, can also be improved the refrigerant temperature for being back to compressor, thus Heating efficiency is promoted, reduces frost condensation to the adverse effect of air-conditioning itself heating performance.
In some alternative embodiments, the refrigerant for flowing through refrigerant inlet pipe and refrigerant outlet tube road is carried out in control After heating, further includes: obtain the state parameter in operation of air conditioner heating mode processes；Meet defrosting determining according to state parameter After exit criteria, control stops heating.
Here, the state parameter in operation of air conditioner heating mode processes is at least one of following parameter type or several Kind: outdoor environment temperature, refrigerant feed liquor temperature, refrigerant go out liquid temperature and outdoor coil temperature.It should be understood that in the application The state parameter of acquisition is not limited to parameter type shown in above-described embodiment.
Corresponding, defrosting exit criteria is preset according to the parameter type specifically acquired, in general, in sky Adjust and illustrate that outdoor heat exchanger has defrosted completions when meeting defrosting exit criteria, on outdoor heat exchanger there is no it is solidifying white or there is only A small amount of solidifying frost, influences the normal heating performance of air-conditioning lower；For example, when parameter type is outdoor environment temperature, then it is a kind of Optional defrosting exit criteria is that outdoor environment temperature is greater than or equal to preset outer circumstance temperature threshold value.
Then after acquiring outdoor environment temperature, according to outdoor environment temperature to whether meet defrosting exit criteria sentence It is disconnected；If it is satisfied, then control stops heating；If conditions are not met, then maintaining currently running working condition constant, convection current is still kept Heating through refrigerant inlet pipe.
In the embodiments of the present disclosure, air-conditioning carries out respectively to the refrigerant for flowing through refrigerant inlet pipe and refrigerant outlet tube road During heating, the judgement operation to defrosting exit criteria is carried out according to the parameter of air-conditioning in real time, to move back in satisfaction defrosting Stop the heating operation to refrigerant in the case where condition out, so that the power consumption of two heating devices of operation be effectively reduced.
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；
First heater 451 is set in the refrigerant inlet pipe of outdoor heat exchanger in a heating mode, is configured as The refrigerant for flowing through refrigerant inlet pipe is heated；
Secondary heating mechanism 452 is set to the refrigerant outlet tube road of outdoor heat exchanger 41 in a heating mode, is configured To be heated to the refrigerant for flowing through refrigerant outlet tube road；
For the control device 46 of air-conditioner defrosting, it is electrically connected respectively with first heater 451, secondary heating mechanism 452. Here, this is used for control device of air-conditioner defrosting as 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, obtain indoor coil pipe, outdoor coil temperature, refrigerant feed liquor temperature and Refrigerant goes out liquid temperature；
Going out liquid temperature according to the indoor coil pipe, the outdoor coil temperature, the refrigerant feed liquor temperature and the refrigerant After degree determines satisfaction defrosting entry condition, control goes out the refrigerant inlet pipe and refrigerant of the outdoor heat exchanger for flowing through the air-conditioning The refrigerant of liquid pipeline is heated.
2. control method according to claim 1, which is characterized in that the defrosting entry condition includes:
Tp- T1≤△ T1, T2-Te>=△ T2, TLiquid out-TFeed liquor≤ △ T3, and TLiquid out-Te≤△T4；
Wherein, the TpFor the indoor coil pipe, the TeFor the outdoor coil temperature, the TLiquid outGo out for the refrigerant Liquid temperature, the TFeed liquorFor the refrigerant feed liquor temperature, T1 is the initial indoor coil pipe when air-conditioning is switched on, and T2 is institute Initial outdoor coil temperature when air-conditioning booting is stated, △ T1 is preset first temperature difference threshold, and △ T2 is preset second temperature difference Threshold value, △ T3 are preset third temperature difference threshold, and △ T4 is preset 4th temperature difference threshold.
3. control method according to claim 2, which is characterized in that the described pair of refrigerant for flowing through refrigerant inlet pipe carries out The refrigerant feed liquor heating parameters of heating are determined according to temperature gap；And/or
The refrigerant that the described pair of refrigerant for flowing through refrigerant outlet tube road is heated goes out liquid heating parameters and is determined according to temperature gap；
For the refrigerant feed liquor heating parameters, the temperature gap includes: the initial outdoor coil temperature and the outdoor The first temperature gap between coil temperature, or, the refrigerant goes out the second temperature between liquid temperature and the refrigerant feed liquor temperature Spend difference；
When the refrigerant feed liquor heating parameters include the rate of heat addition and/or heating to the refrigerant for flowing through the refrigerant inlet pipe It is long；
Liquid heating parameters are gone out for refrigerant, the temperature gap include: the outdoor coil temperature with it is described initial outdoor coil pipe used The first temperature gap between temperature, or, the refrigerant goes out the third temperature difference between liquid temperature and the outdoor coil temperature Value；
The refrigerant goes out liquid heating parameters when including the rate of heat addition and/or heating to the refrigerant for flowing through refrigerant outlet tube road It is long.
4. control method according to claim 3, which is characterized in that described cold to flowing through according to temperature gap determination The rate of heat addition of the refrigerant of matchmaker's inlet pipe, comprising:
According to first temperature gap, 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；Or,
According to the second temperature difference, corresponding second rate of heat addition is obtained from the second rate incidence relation, according to institute Second rate of heat addition is stated to be heated.
5. control method according to claim 3, which is characterized in that described cold to flowing through according to temperature gap determination The heating duration of the refrigerant of matchmaker's inlet pipe, comprising:
According to first temperature gap, corresponding first heating duration is obtained from the first duration incidence relation, according to institute The first heating duration is stated to be heated；Or,
According to the second temperature difference, corresponding second heating duration is obtained from the second duration incidence relation, according to institute The second heating duration is stated to be heated.
6. control method according to claim 3, which is characterized in that described cold to flowing through according to temperature gap determination The rate of heat addition of the refrigerant on matchmaker's outlet tube road, comprising:
According to first temperature gap, the corresponding third rate of heat addition is obtained from third speed incidence relation, according to institute The third rate of heat addition is stated to be heated；Or,
According to the third temperature gap, corresponding 4th rate of heat addition is obtained from fourth rate incidence relation, according to institute The 4th rate of heat addition is stated to be heated.
7. control method according to claim 3, which is characterized in that described cold to flowing through according to temperature gap determination The heating duration of the refrigerant on matchmaker's outlet tube road, comprising:
According to first temperature gap, corresponding third heating duration is obtained from third duration incidence relation, according to institute Third heating duration is stated to be heated；Or,
According to the third temperature gap, corresponding 4th heating duration is obtained from the 4th duration incidence relation, according to institute The 4th heating duration is stated to be heated.
8. control method according to any one of claims 1 to 7, which is characterized in that according to the indoor coil pipe, After the outdoor coil temperature, the refrigerant feed liquor temperature and the refrigerant go out the determining satisfaction defrosting entry condition of liquid temperature, also Include:
Control reduces the running frequency of the compressor of the air-conditioning；Alternatively,
Control reduces the revolving speed of the outdoor fan of the air-conditioning or shuts down the outdoor fan, and/or, control reduces the sky The revolving speed of the indoor fan of tune；Alternatively,
Control increases the flow aperture of the throttling set of the air-conditioning.
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；
First heater 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；
Secondary heating mechanism is set to the outdoor heat exchanger on the refrigerant outlet tube road under the heating mode, is configured To be heated to the refrigerant for flowing through refrigerant outlet tube road；
The control device as claimed in claim 9 for being used for air-conditioner defrosting is filled with the first heater, the second heating respectively Set electrical connection.
CN201910675274.3A 2019-07-25 2019-07-25 Control method and device for defrosting of air conditioner and air conditioner Active CN110469970B (en)

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