CN110470013A - Control method and device, air-conditioning for air-conditioner defrosting - Google Patents
Control method and device, air-conditioning for air-conditioner defrosting Download PDFInfo
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- CN110470013A CN110470013A CN201910713179.8A CN201910713179A CN110470013A CN 110470013 A CN110470013 A CN 110470013A CN 201910713179 A CN201910713179 A CN 201910713179A CN 110470013 A CN110470013 A CN 110470013A
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- air
- heating
- refrigerant
- temperature
- heat exchanger
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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
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
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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
-
- 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: in the case where air-conditioning is defrosted, and control enters reverse cycle defrosting mode and executes the first heating operation of the refrigerant to the refrigerant outlet tube road for the outdoor heat exchanger for flowing through air-conditioning；Outdoor coil temperature, the refrigerant for obtaining outdoor heat exchanger go out liquid temperature and upper body temperature；In the case where outdoor coil temperature, refrigerant go out liquid temperature and upper body temperature meets defrosting exit criteria, control exits reverse cycle defrosting mode and stops executing the first heating operation.It is exited using multiple temperature parameter comprehensive descision air-conditionings of outdoor heat exchanger the opportunity of defrosting, improves the control precision for exiting defrosting to control air-conditioning；And reverse cycle defrosting mode and by way of heating to the refrigerant for flowing through refrigerant outlet tube road, accelerate to reduce frost condensation to the adverse effect of air conditioning performance.A kind of control device and air-conditioning for air-conditioner defrosting is also disclosed in the application.
Description
Technical field
This application involves air-conditioner defrosting technical fields, for example, be related to a kind of control method and device for air-conditioner defrosting,
Air-conditioning.
Background technique
Currently, the mainstream model of air-conditioning is mostly the heat exchange function for having cooling and warming double mode, here, air-conditioning is cryogenically
Under area or the biggish weather conditions of wind and snow, user is usually to adjust air-conditioning to heating mode, indoor to be promoted using air-conditioning
The temperature of environment；In air conditioner in operation heating operations, the outdoor heat exchanger of outdoor unit is to play to absorb from outdoor environment
The effect of the evaporator of heat is influenced by the temperature and humidity of outdoor environment, and the more ice of condensation is easy on outdoor heat exchanger
Frost, and meeting is so that the heating capacity of air-conditioning can be lower and lower, therefore imitates to guarantee to heat after simultaneously frost knot arrives certain thickness
Fruit avoids frost condensation excessive, it is therefore necessary to defrost to outdoor heat exchanger.
Here, the mode to defrost to outdoor heat exchanger is mainly include the following types: first is that reverse cycle defrosting, air-conditioning carry out
When reverse cycle defrosting, the high temperature refrigerant of compressor discharge first flows through outdoor heat exchanger, to melt frost using refrigerant heat；Second is that
Increase electric heater unit on the refrigerant pipeline of air-conditioning, the refrigerant for flowing into outdoor heat exchanger is heated using electric heater unit, in turn
Melt the frost condensed on outdoor heat exchanger using refrigerant heat；Third is that adjusting the air supply rates such as compressor, electric expansion valve
Operating parameter, to change the temperature and pressure state of refrigerant in refrigerant pipeline, making it also can be played to outdoor heat exchanger defrosting
Effect.
During realizing the embodiment of the present disclosure, at least there are the following problems in the related technology for discovery:
Since the Defrost mode of above-mentioned several pairs of outdoor heat exchangers more or less all can be to the normal heating performance structure of air-conditioning
At influence, therefore air-conditioning will do it judgement before exiting defrosting, and then control whether air-conditioning exits defrosting according to judging result.
In the related technology, it removes generally by judging whether to exit to the mode compared with numerical value between outdoor environment temperature and frost point temperature
Frost.Since the solidifying white situation of outdoor heat exchanger can be influenced by many factors such as outdoor environment and self-operating state simultaneously,
Therefore the above-mentioned judgment mode for whether exiting defrosting mode is excessively rough, is easy to make air-conditioning exit defrosting mode in advance and cause to remove
Frost is not thorough, alternatively, after the completion of defrosting continuous service defrosting mode and influence the normal heating performance of air-conditioning.
Summary of the invention
In order to which some aspects of the embodiment to disclosure have basic understanding, simple summary is shown below.It is described general
Including is not extensive overview, nor to determine key/critical component or describe the protection scope of these embodiments, but is made
For the preamble of following detailed description.
The embodiment of the present disclosure provides a kind of control method and device for air-conditioner defrosting, air-conditioning, to solve related skill
The judgment mode that defrosting mode whether is exited in art is excessively rough, is easy to make air-conditioning exit defrosting mode in advance and cause defrosting not
Thoroughly, alternatively, after the completion of defrosting continuous service defrosting mode and the technical issues of influence air-conditioning normal heating performance.
In some embodiments, the control method for air-conditioner defrosting includes:
In the case where air-conditioning is defrosted, control enters reverse cycle defrosting mode and executes to flowing through air-conditioning
First heating operation of the refrigerant on the refrigerant outlet tube road of outdoor heat exchanger；
Outdoor coil temperature, the refrigerant for obtaining outdoor heat exchanger go out liquid temperature and upper body temperature；
In the case where outdoor coil temperature, refrigerant go out liquid temperature and upper body temperature meets defrosting exit criteria, control
System exits reverse cycle defrosting mode and stops executing the first heating operation.
In some embodiments, the control device for air-conditioner defrosting includes processor and is stored with program instruction
Memory, processor are configured as when executing program instructions, and execute the above-mentioned control method for air-conditioner defrosting.
In some embodiments, the air-conditioning includes:
Refrigerant circulation circuit is connected by outdoor heat exchanger, indoor heat exchanger, throttling set and compressor by refrigerant pipeline
It constitutes；
Heating device is set to the refrigerant outlet tube road of outdoor heat exchanger in a heating mode, is configured as to flowing through
The refrigerant on refrigerant outlet tube road is heated；
The above-mentioned control device for air-conditioner defrosting, is electrically connected with heating device.
The control method and device for air-conditioner defrosting of embodiment of the present disclosure offer, air-conditioning, may be implemented following technology
Effect:
Air-conditioning during Defrost operation, using the outdoor coil temperature of outdoor heat exchanger, refrigerant go out liquid temperature and on
Case temperature these three parametric synthesis in portion's judge that air-conditioning exits the opportunity of defrosting, exit so as to effectively improve to control air-conditioning
The control precision of defrosting avoids air-conditioning from exiting defrosting mode in advance and defrosting is caused to be not thorough, alternatively, continuing after the completion of defrosting
It runs defrosting mode and influences the normal heating performance of air-conditioning；And outdoor is changed using high temperature refrigerant by reverse cycle defrosting mode
Hot device defrosting, and further increased by way of being heated to the refrigerant for flowing through refrigerant outlet tube road and flowed under inverse circulation pattern
The refrigerant temperature of outdoor heat exchanger can effectively improve the defrosting efficiency to outdoor heat exchanger, accelerate to reduce frost condensation to sky
Adjust the adverse effect of itself heating performance.
Above general description and it is discussed below be only it is exemplary and explanatory, be not used in limitation the application.
Detailed description of the invention
One or more embodiments are illustrated by corresponding attached drawing, these exemplary illustrations and attached drawing
The restriction to embodiment is not constituted, the element with same reference numbers label is shown as similar element in attached drawing, and attached drawing is not
Composition limitation, and wherein:
Fig. 1 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides；
Fig. 2 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides；
Fig. 3 is the structural schematic diagram for the control device for air-conditioner defrosting that the embodiment of the present disclosure provides；
Fig. 4 is the structural schematic diagram for the air-conditioning that the embodiment of the present disclosure provides.
Specific embodiment
The characteristics of in order to more fully hereinafter understand the embodiment of the present disclosure and technology contents, with reference to the accompanying drawing to this public affairs
The realization for opening embodiment is described in detail, appended attached drawing purposes of discussion only for reference, is not used to limit the embodiment of the present disclosure.
In technical description below, for convenience of explanation for the sake of, disclosed embodiment is fully understood with providing by multiple details.
However, one or more embodiments still can be implemented in the case where without these details.It in other cases, is simplification
Attached drawing, well known construction and device can simplify displaying.
Fig. 1 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides.
A kind of control method for air-conditioner defrosting is provided in the embodiment of the present disclosure, as shown in Figure 1, including following step
It is rapid:
S101: in the case where air-conditioning is defrosted, control enters reverse cycle defrosting mode and executes to flowing through
First heating operation of the refrigerant on the refrigerant outlet tube road of the outdoor heat exchanger of air-conditioning.
In embodiment, when frosting problem occurs in the outdoor heat exchanger of air-conditioner outdoor unit, outdoor environment is mostly in temperature
Lower, the biggish bad working environments of humidity, user is usually that air-conditioning is set as heating mode operation at this time, to utilize air-conditioning to room
Interior environment carries out heating heating.Therefore the control method for air-conditioner defrosting that the embodiment of the present disclosure provides is in air-conditioning to heat
The control flow enabled when mode operation.
Optionally, judge by way of compared with numerical value between outdoor environment temperature and frost point temperature air-conditioning whether need into
Row defrosting.When outdoor environment temperature is lower than frost point temperature, then it is assumed that air-conditioning defrosts；When outdoor environment temperature is higher than
When frost point temperature, then it is assumed that air-conditioning is without defrosting.
Reverse cycle defrosting mode includes that the refrigerant flow direction of control air-conditioning is switched to the flow direction opposite with heating mode；In this kind
Under model process, the high temperature refrigerant of compressor discharge is first to flow through outdoor heat exchanger, so as to utilize the heat of high temperature refrigerant
Realize the defrosting operation to outdoor heat exchanger.Meanwhile under inverse circulation pattern, the refrigerant outlet tube road under heating mode is substantial
To become " refrigerant inlet pipe ", i.e., at this time refrigerant via under refrigeration mode refrigerant outlet tube road flow into outdoor heat exchanger；Cause
This, can be further improved the refrigerant temperature for flowing into indoor heat exchanger by the heating to the refrigerant for flowing through refrigerant outlet tube road,
So as to enhance actual defrosting effect.
Optionally, it is provided with a heating device at the refrigerant outlet tube road of outdoor heat exchanger of air conditioner, which is set
It is set to and controllably the refrigerant for flowing through refrigerant outlet tube road is heated.In the case where air-conditioning needs to defrost, can control out
Open heating device；And in the case where air-conditioning is without heating, then keep the closed state of heating device.
In one embodiment, heating device is electromagnetic heater, and electromagnetic heater utilizes electromagnetic induction heating
Principle heats refrigerant pipeline, and then the refrigerant for flowing through refrigerant pipeline is conducted heat to using refrigerant pipeline, cold to reach heating
The purpose of matchmaker.
Here, the corresponding refrigerant pipe section heated of electromagnetic heater is the pipeline section of the metal materials such as copper or irony,
Electromagnetic heater is mainly made of induction coil and power supply module, and induction coil is wound in above-mentioned refrigerant pipeline here
Section, power supply module can provide alternating current for induction coil；When induction coil is powered, the alternating current of induction coil is flowed through
The alternating magnetic field for passing through refrigerant pipe section is generated, which can make refrigerant inner tube segment generate vortex, so as to rely on
The energy of these vortex plays the role of heat temperature raising.
It is filled it should be understood that the type for the heating device that the application is used to heat refrigerant is not limited to above-mentioned electromagnetic heating
It sets, the other types of heating device that can be used in directly or indirectly heating refrigerant can also be using the application's in the related technology
Technical solution, and cover within the scope of protection of this application.
S102: the outdoor coil temperature of outdoor heat exchanger is obtained, refrigerant goes out liquid temperature and upper body temperature.
Optionally, the coil pipe position of the outdoor heat exchanger of air-conditioner outdoor unit is provided with one first temperature sensor, this
One temperature sensor can be used for detecting the real time temperature of coil pipe position.Therefore, acquired outdoor coil pipe used temperature in step s 102
Degree can be the real time temperature by coil pipe position detected by the first temperature sensor.
The temperature change of the coil pipe position of outdoor heat exchanger can intuitively reflect in external outdoor environment temperature and interior
The temperature variations of the refrigerant pipeline of outdoor heat exchanger, are in addition typically also outdoor heat exchange under the refrigerant temperature joint effect in portion
Device is easy to appear the pipeline position of frosting problem.Therefore the outdoor coil temperature got, which can be used as, measures air-conditioning inside and outside pair
The reference factor that the frosting that outdoor heat exchanger generates jointly influences.
Optionally, the outdoor heat exchanger of air-conditioner outdoor unit is provided with a second temperature sensor, second temperature sensing
Device can be used for detecting the real time temperature of the refrigerant on the refrigerant outlet tube road for flowing through outdoor heat exchanger.Therefore, institute in step s 102
The refrigerant of the outdoor heat exchanger of acquisition, which goes out liquid temperature, can be real-time temperature by refrigerant detected by second temperature sensor
Degree.Here, when refrigerant outlet tube road is run for air-conditioning with heating mode refrigerant outflow outdoor heat exchanger via pipeline.
The temperature for flowing out the refrigerant of outdoor heat exchanger is to can reflect out the heat exchange effect of outdoor heat exchanger and outdoor environment
Rate, and heat exchanger effectiveness then will receive the influence of the frosting degree of outdoor heat exchanger；Here, air-conditioning frosting degree is lower, ice
In the case that frost thickness are relatively thin, influence of the frost to heat exchange is smaller, the heat that the refrigerant after flowing through outdoor heat exchanger is absorbed
It is more；And in the case where air-conditioning frosting degree is higher, frost thickness is thicker, frost is affected to heat exchange, flows through room
The heat that refrigerant after external heat exchanger is absorbed is less.Therefore the refrigerant that acquires, which goes out liquid temperature and can be used as, measures air-conditioning and changes
The reference factor of the frosting degree of hot device.
Optionally, the outdoor heat exchanger of air-conditioner outdoor unit is provided with a third temperature sensor, the third temperature sensing
Device can be used for detecting the upper body temperature of outdoor heat exchanger.Therefore, acquired upper body temperature can in step s 102
To be the real time temperature detected by the third temperature sensor.
The refrigerant inlet pipe of outdoor heat exchanger is set to lower part, and refrigerant goes out liquid and is set to top, therefore in heating mode
Lower refrigerant flows into outdoor heat exchanger from below, and flows out outdoor heat exchanger from top.Therefore upper casing temperature is by having flowed through room
Most of pipeline of external heat exchanger is simultaneously influenced with the temperature of the refrigerant after outdoor environment heat exchange, is able to reflect out in difference
The heat exchanger effectiveness of refrigerant under frosting situation.Under the situation of the non-frosting of air-conditioning, refrigerant absorb heat from outdoor environment it is more, therefore
The temperature for the upper body being affected by it is also higher；And in air-conditioning there are in the case where frosting, refrigerant absorbs heat from outdoor environment
It is less, therefore upper casing temperature is relatively low.In this way, room of the upper casing temperature of outdoor heat exchanger compared to outdoor heat exchanger lower part
Outer coil temperature more can accurately reflect the frosting degree of outdoor heat exchanger.
S103: the case where outdoor coil temperature, refrigerant go out liquid temperature and upper body temperature meets defrosting exit criteria
Under, control exits reverse cycle defrosting mode and stops executing the first heating operation.
During heating by the refrigerant of the refrigerant inlet pipe to the outdoor heat exchanger for flowing through air-conditioning, outdoor is utilized
Outdoor coil temperature, the refrigerant of heat exchanger go out liquid temperature and upper body temperature these three parametric synthesis judge air-conditioning stop plus
Heat, the opportunity for exiting defrosting.Outdoor coil temperature more can sensitively reflect the different location refrigerant pipe of outdoor heat exchanger
The temperature variations on road；Refrigerant, which goes out liquid temperature and is able to reflect outdoor heat exchanger its heating performance in air-conditioning frosting, to decline
Subtract situation；Upper body temperature is able to reflect out the heat exchanger effectiveness of the refrigerant under different frosting situations.Therefore, it is changed by outdoor
Outdoor coil temperature, the refrigerant of hot device go out liquid temperature and upper body temperature these three parametric synthesis judge removing for outdoor heat exchanger
White situation can effectively improve the control precision for exiting defrosting to control air-conditioning, air-conditioning avoided to exit defrosting mode in advance and make
Be not thorough at defrosting, alternatively, after the completion of defrosting continuous service defrosting mode and influence the normal heating performance of air-conditioning.
Optionally, defrost exit criteria are as follows:
T1≥T01, t1≥t01, T2≥T02, t2≥t02, T3≥T03, and t3≥t03
Wherein, T1For the outdoor coil temperature of outdoor heat exchanger, T01For the first preset temperature, t1For T1≥T01It is lasting when
It is long, t01For the first preset duration, T2Go out liquid temperature, T for the refrigerant of outdoor heat exchanger02For the second preset temperature, t2For T2≥T02
Duration, t02For the second preset duration, T3For the upper body temperature of outdoor heat exchanger, T03For third preset temperature, t3
For T3≥T03Duration, t03For third preset duration.
Optionally, the first preset temperature is the outdoor heat exchanger defrosting detected in air-conditioner defrosting test process prestored
The correction temperature of outdoor coil temperature after the completion.After the completion of outdoor heat exchanger defrosting, outdoor coil temperature can be due to white water
There is certain fluctuation in the reasons such as evaporation.Therefore the outdoor heat exchanger defrosting detected in air-conditioner defrosting test process is completed
Outdoor coil temperature afterwards is corrected, and improves the accuracy of defrosting exit criteria.
First preset temperature can be calculated by the following formula to obtain:
T01=α * T001
Wherein, α is the first proportionality coefficient, T001For the outdoor heat exchanger defrosting detected in air-conditioner defrosting test process
Outdoor coil temperature after the completion.The value range of α is [1.1,1.3], for example, 1.1,1.15,1.2,1.25,1.3.
Optionally, the second preset temperature is the outdoor heat exchanger defrosting detected in air-conditioner defrosting test process prestored
Refrigerant after the completion goes out the correction temperature of liquid temperature.After the completion of outdoor heat exchanger defrosting, due to condensing on outdoor heat exchanger
The reasons such as white water evaporation will affect the heat exchanger effectiveness of outdoor heat exchanger and outdoor environment, and then the refrigerant detected is caused to go out liquid
Refrigerant after temperature and practical defrosting when outdoor heat exchanger stable operation goes out between liquid temperature deviation occur.Therefore in sky
Refrigerant after the completion of adjusting the outdoor heat exchanger detected in defrosting test process to defrost goes out liquid temperature and is corrected, and improves defrosting and moves back
The accuracy of condition out.
Second preset temperature can be calculated by the following formula to obtain:
T02=β * T002
Wherein, β is the second proportionality coefficient, T002For the outdoor heat exchanger defrosting detected in air-conditioner defrosting test process
Refrigerant after the completion goes out liquid temperature.The value range of β is [1.1,1.4], for example, 1.1,1.2,1.3,1.4.
Optionally, third preset temperature is the outdoor heat exchanger defrosting detected in air-conditioner defrosting test process prestored
The correction temperature of upper body temperature after the completion.After the completion of outdoor heat exchanger defrosting, upper part case temperature can be due to white water
There is certain fluctuation in the reasons such as evaporation.Therefore the outdoor heat exchanger defrosting detected in air-conditioner defrosting test process is completed
Upper body temperature afterwards is corrected, and improves the accuracy of defrosting exit criteria.
Third preset temperature can be calculated by the following formula to obtain:
T03=δ * T003
Wherein, δ is third proportionality coefficient, T003For the outdoor heat exchanger defrosting detected in air-conditioner defrosting test process
Upper body temperature after the completion.The value range of δ is [1.1,1.3], for example, 1.1,1.15,1.2,1.25,1.3.
Optionally, the value range of the first preset duration is [2s, 5s] (s: second), for example, 2s, 3s, 4s, 5s；Second is pre-
If the value range of duration is [2s, 5s], for example, 2s, 3s, 4s, 5s；The value range of third preset duration is [2s, 5s], example
Such as, 2s, 3s, 4s, 5s.
In the defrosting exit criteria, the outdoor coil temperature of outdoor heat exchanger is greater than the first preset temperature and duration
Greater than the first preset duration, it can intuitively reflect that the defrost of outdoor heat exchanger outer surface is completed；The refrigerant of outdoor heat exchanger goes out liquid
Temperature is greater than the second preset temperature and duration is greater than the second preset duration, can reflect out the heating performance of outdoor heat exchanger
Restore at least frost or frostless situation；The upper body temperature of outdoor heat exchanger is greater than third preset temperature and duration and is greater than the
Three preset durations can more accurately reflect outdoor heat exchanger outer surface defrost completion.Therefore, can stop to flowing through air-conditioning
Outdoor heat exchanger refrigerant inlet pipe refrigerant heating, exit the Defrost operation mode of air-conditioning.
In the present embodiment, air-conditioning is gone out during Defrost operation using the outdoor coil temperature of outdoor heat exchanger, refrigerant
Liquid temperature and upper body temperature these three parametric synthesis judge the opportunity that air-conditioning stops heating, exits defrosting, so as to have
Effect improves the control precision that defrosting is exited to control air-conditioning, avoids air-conditioning from exiting defrosting mode in advance and defrosting is caused to be not thorough,
Alternatively, after the completion of defrosting continuous service defrosting mode and influence the normal heating performance of air-conditioning.In addition, passing through reverse cycle defrosting
Mode using high temperature refrigerant to outdoor heat exchanger defrost, and to flow through refrigerant outlet tube road refrigerant heat by way of into
One step improves inverse circulation pattern and flows down into the refrigerant temperature of outdoor heat exchanger, can effectively improve the defrosting effect to outdoor heat exchanger
Rate accelerates to reduce frost condensation to the adverse effect of air-conditioning itself heating performance.
Fig. 2 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides.
A kind of control method for air-conditioner defrosting is provided in the embodiment of the present disclosure, as shown in Fig. 2, including following step
It is rapid:
S201: air-conditioning booting is run with heating mode.
S202: control executes the second heating operation to the refrigerant on the refrigerant outlet tube road for flowing through outdoor heat exchanger.
In order to promote the heating performance of air-conditioning as early as possible when air-conditioning is switched on, control is executed to flowing through outdoor heat exchanger
Second heating operation of the refrigerant on refrigerant outlet tube road.At this point, refrigerant flows out outdoor heat exchanger via refrigerant outlet tube road, and return
It is flow to compressor, therefore, the second heating operation can be improved the suction temperature for being back to the refrigerant of compressor, to improve air-conditioning
In the heating performance of start-up phase.
S203: the suction temperature of the compressor of air-conditioning is obtained.
In the present embodiment, the air return end of compressor of air conditioner is additionally provided with a temperature sensor, and the temperature sensor is available
Refrigerant temperature in detection stream cooled via return air end；Therefore the refrigerant temperature that real-time detection arrives can be obtained by the temperature sensor,
And as judging the suction temperature of temperature condition.
S204: judge whether the suction temperature of compressor meets preset temperature condition.
Optionally, temperature condition includes: that suction temperature is greater than or equal to preset suction temperature threshold value.
S205: when the suction temperature of compressor meets preset temperature condition, control stops the second heating operation.
In the case where suction temperature is greater than or equal to preset suction temperature threshold value, illustrate the heating performance of air-conditioning at this time
Can satisfy current heating needs, it can control and stop the second heating operation, in this way in the feelings for guaranteeing air-conditioning heating demand
Under condition, it is possible to reduce the power consumption of the second heating operation；And in the case where suction temperature is less than preset suction temperature threshold value, it says
The heating performance of bright air-conditioning at this time not yet meets current heating needs, therefore keeps the second heating operation constant.
S206: judge whether air-conditioning defrosts.
S207: in the case where air-conditioning is defrosted, the heating parameters of heating are determined according to the degree of superheat of air-conditioning.
Optionally, heating parameters include target heating rate, target heating duration or target heating interruption duration.
The degree of superheat of air-conditioning is usually to be directed to for condenser, refers to the refrigerant pressure pair of condensator outlet certain point
Difference between the saturation temperature answered and refrigerant actual temperature.The degree of superheat of air-conditioning can be calculated according to the following formula:
SC=TOutlet-TMiddle part
Wherein, SC is the degree of superheat of air-conditioning, TOutletFor condensator outlet temperature (indoor heat exchanger outlet temperature), TMiddle partIt is cold
Condenser middle portion temperature (indoor heat exchanger middle portion temperature).
The degree of superheat of air-conditioning is larger, then illustrates that the back pressure of air-conditioning and temperature are lower, needs to improve target heating at this time
Rate increases target and heats duration, shortens target heating interruption duration, improves the back pressure and temperature of air-conditioning；The mistake of air-conditioning
Temperature is smaller, then illustrates that the back pressure of air-conditioning and temperature are higher, can suitably reduce target heating rate, shortens target heating
Duration, increasing target heating interruption duration to reduce the power consumption of heating device operation reduces the use cost of air-conditioning.Therefore, may be used
The heating parameters of heating are determined with the degree of superheat of air-conditioning.
Optionally, according to the degree of superheat, the corresponding rate of heat addition is obtained from rate of heat addition incidence relation and by the rate of heat addition
As target heating rate.
It include the corresponding relationship of the one or more degrees of superheat and the rate of heat addition in rate of heat addition incidence relation.For example, table 1 shows
Go out the corresponding relationship of a kind of optional degree of superheat and the rate of heat addition:
Table 1: rate of heat addition incidence relation
| The degree of superheat (unit: DEG C) | The rate of heat addition (unit: DEG C/min) |
| a1<SC≤a2 | V1 |
| a2<SC≤a3 | V2 |
| a3<SC | V3 |
In rate of heat addition incidence relation, the rate of heat addition is positively correlated with the degree of superheat.That is, the degree of superheat is bigger, the rate of heat addition is got over
Greatly；The degree of superheat is smaller, and the rate of heat addition is smaller.
Optionally, according to the degree of superheat, corresponding heating duration is obtained from heating duration incidence relation and will heat duration
Duration is heated as target.
Heat includes one or more degrees of superheat and the corresponding relationship for heating duration in duration incidence relation.For example, table 2 shows
Go out the corresponding relationship of a kind of optional degree of superheat and heating duration:
Table 2: heating duration incidence relation
| The degree of superheat (unit: DEG C) | It heats duration (unit: min) |
| a1<SC≤a2 | t11 |
| a2<SC≤a3 | t12 |
| a3<SC | t13 |
It heats in duration incidence relation, heating duration is positively correlated with the degree of superheat.That is, the degree of superheat is bigger, heating duration is got over
Greatly；The degree of superheat is smaller, and heating duration is smaller.
Optionally, according to the degree of superheat, corresponding heating interruption duration is obtained from heating interruption duration incidence relation and is incited somebody to action
Heating interruption duration heats interruption duration as target.
It include the corresponding relationship of one or more degrees of superheat and heating interruption duration in heating interruption duration incidence relation.Example
Such as, table 3 shows the corresponding relationship of a kind of optional degree of superheat and heating interruption duration:
Table 3: heating interruption duration incidence relation
| The degree of superheat (unit: DEG C) | Heating interruption duration (unit: min) |
| a1<SC≤a2 | t21 |
| a2<SC≤a3 | t22 |
| a3<SC | t23 |
In heating interruption duration incidence relation, heating interruption duration and the degree of superheat are negatively correlated.That is, the degree of superheat is bigger, add
Heat interruption duration is smaller；The degree of superheat is smaller, and heating interruption duration is bigger.
S208: control enters reverse cycle defrosting mode and executes the refrigerant outlet tube to outdoor heat exchanger according to heating parameters
First heating operation of the refrigerant on road.
According to heating parameters incidence relation obtain corresponding heating parameters (target heating rate, target heating duration and
Target heating interruption duration) after, it executes according to corresponding heating parameters to the refrigerant on the refrigerant outlet tube road of outdoor heat exchanger
First heating operation.In the case where ensuring that air-conditioning normally defrosts, the operation power consumption of heating devices heat refrigerant is reduced to the greatest extent, rise
To energy-efficient effect.
S209: the outdoor coil temperature of outdoor heat exchanger is obtained, refrigerant goes out liquid temperature and upper body temperature.
S210: judge that outdoor coil temperature, refrigerant go out liquid temperature and whether upper body temperature meets defrosting exit criteria.
S211: the case where outdoor coil temperature, refrigerant go out liquid temperature and upper body temperature meets defrosting exit criteria
Under, control exits reverse cycle defrosting mode and stops executing the first heating operation.
In the present embodiment, control air-conditioning is entered reverse cycle defrosting mode and is further carried out using heating devices heat refrigerant
Defrosting, will affect the normal heating mode of air-conditioning and can bring additional power consumption to a certain extent.Therefore in outdoor coil pipe used temperature
In the case that degree, refrigerant go out liquid temperature upper body temperature satisfaction defrosting exit criteria, control exits reverse cycle defrosting mode simultaneously
Stop heating, restores the normal heating performance of air-conditioning, and reduce the loss of heating device, reduce the operating cost of air-conditioning.
Fig. 3 is the structural schematic diagram for the control device for air-conditioner defrosting that the embodiment of the present disclosure provides.
The embodiment of the present disclosure provides a kind of control device for air-conditioner defrosting, and structure is as shown in Figure 3, comprising:
Processor (processor) 30 and memory (memory) 31 can also include communication interface
(Communication Interface) 32 and bus 33.Wherein, processor 30, communication interface 32, memory 31 can pass through
Bus 33 completes mutual communication.Communication interface 32 can be used for information transmission.Processor 30 can call in memory 31
Logical order, to execute the control method for air-conditioner defrosting of above-described embodiment.
In addition, the logical order in above-mentioned memory 31 can be realized and as only by way of SFU software functional unit
Vertical product when selling or using, can store in a computer readable storage medium.
Memory 31 is used as a kind of computer readable storage medium, can be used for storing software program, journey can be performed in computer
Sequence, such as the corresponding program instruction/module of the method in the embodiment of the present disclosure.Processor 30 is stored in memory 31 by operation
Program instruction/module be used for air-conditioning in realization above method embodiment thereby executing functional application and data processing
The control method of defrosting.
Memory 31 may include storing program area and storage data area, wherein storing program area can storage program area, extremely
Application program needed for a few function；Storage data area, which can be stored, uses created data etc. according to terminal device.This
Outside, memory 31 may include high-speed random access memory, can also include nonvolatile memory.
Fig. 4 is the structural schematic diagram for the air-conditioning that the embodiment of the present disclosure provides.
The embodiment of the present disclosure provides a kind of air-conditioning, as shown in Figure 4, comprising:
Refrigerant circulation circuit passes through refrigerant by outdoor heat exchanger 41, indoor heat exchanger 42, throttling set 43 and compressor 44
Piping connection is constituted；
Heating device 45 is set to the refrigerant outlet tube road of outdoor heat exchanger 41 in a heating mode, is configured as pair
The refrigerant for flowing through refrigerant outlet tube road is heated；
The above-mentioned control device 46 for air-conditioner defrosting, is electrically connected with heating device 45.
Air-conditioning provided in this embodiment goes out liquid temperature and upper case body temperature using the coil temperature of outdoor heat exchanger, refrigerant
It spends these three parametric synthesis and judges that air-conditioning exits the opportunity of defrosting, so as to effectively improve the control for exiting defrosting to control air-conditioning
Precision processed；And it is defrosted using high temperature refrigerant to outdoor heat exchanger by reverse cycle defrosting mode, and by going out to flowing through refrigerant
The mode of the refrigerant heating of liquid pipeline further increases inverse circulation pattern and flows down into the refrigerant temperature of outdoor heat exchanger, can be effective
The defrosting efficiency to outdoor heat exchanger is improved, accelerates to reduce frost condensation to the adverse effect of air-conditioning itself heating performance.
The embodiment of the present disclosure provides a kind of computer readable storage medium, is stored with computer executable instructions, described
Computer executable instructions are arranged to carry out the above-mentioned control method for air-conditioner defrosting.
The embodiment of the present disclosure provides a kind of computer program product, and the computer program product includes being stored in calculating
Computer program on machine readable storage medium storing program for executing, the computer program include program instruction, when described program instruction is calculated
When machine executes, the computer is made to execute the above-mentioned control method for air-conditioner defrosting.
Above-mentioned computer readable storage medium can be transitory computer readable storage medium, be also possible to non-transient meter
Calculation machine readable storage medium storing program for executing.
The technical solution of the embodiment of the present disclosure can be embodied in the form of software products, which deposits
Storage in one storage medium, including one or more instruction is used so that computer equipment (can be personal computer,
Server or the network equipment etc.) execute embodiment of the present disclosure the method all or part of the steps.And storage above-mentioned is situated between
Matter can be non-transient storage media, comprising: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), with
Machine accesses a variety of Jie that can store program code such as memory (RAM, Random Access Memory), magnetic or disk
Matter is also possible to transitory memory medium.
Above description and attached drawing sufficiently illustrate embodiment of the disclosure, to enable those skilled in the art to practice
They.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment only represents
Possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can change.
The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.The embodiment of the present disclosure
Range includes the entire scope of claims and all obtainable equivalents of claims.When for the application
When middle, although term " first ", " second " etc. may be used in this application to describe each element, these elements should not be by
To the limitation of these terms.These terms are only used to differentiate an element with another element.For example, not changing description
Meaning in the case where, first element can be called second element, and same, and second element can be called first element,
As long as " first element " that is occurred unanimously renames and " second element " occurred unanimously renames.First
Element and second element are all elements, but can not be identical element.Moreover, word used herein is only used for describing
Embodiment and it is not used in limitation claim.As used in the description in embodiment and claim, unless context
It clearly illustrates, otherwise "one" (a) of singular, "one" (an) and " described " (the) is intended to equally include plural shape
Formula.Similarly, term "and/or" refers to and associated lists comprising one or more as used in this specification
Any and all possible combination.In addition, when in the application, term " includes " (comprise) and its modification " packet
Include " (comprises) and/or feature, entirety, step, operation, element and/or group including the statement such as (comprising) fingers
The presence of part, but it is not excluded for one or more other features, entirety, step, operation, element, component and/or these point
The presence or addition of group.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method or equipment for including the element.Herein, each embodiment emphasis
What is illustrated can be the difference from other embodiments, and the same or similar parts in each embodiment can refer to each other.It is right
For the method disclosed in embodiment, product etc., if it is corresponding with method part disclosed in embodiment, related place
It may refer to the description of method part.
It will be appreciated by those of skill in the art that unit described in conjunction with the examples disclosed in the embodiments of the present disclosure and
Algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually with hard
Part or software mode execute, and can depend on the specific application and design constraint of technical solution.The technical staff
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The range of the embodiment of the present disclosure.The technical staff can be understood that, for convenience and simplicity of description, foregoing description
The specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, no longer superfluous herein
It states.
In embodiments disclosed herein, disclosed method, product (including but not limited to device, equipment etc.) can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
Divide, can be only a kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or
Component can be combined or can be integrated into another system, or some features can be ignored or not executed.In addition, shown
Or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit it is indirect
Coupling or communication connection can be electrical property, mechanical or other forms.The unit as illustrated by the separation member can be or
Person, which may not be, to be physically separated, and component shown as a unit may or may not be physical unit
With in one place, or may be distributed over multiple network units.Portion therein can be selected according to the actual needs
Point or whole unit realize the present embodiment.In addition, each functional unit in the embodiments of the present disclosure can integrate at one
In processing unit, it is also possible to each unit and physically exists alone, a list can also be integrated in two or more units
In member.
The flow chart and block diagram in the drawings show system, the method and computer program products according to the embodiment of the present disclosure
Architecture, function and operation in the cards.In this regard, each box in flowchart or block diagram can represent one
A part of module, section or code, a part of the module, section or code include it is one or more for realizing
The executable instruction of defined logic function.In some implementations as replacements, function marked in the box can also be with
Occur different from the sequence marked in attached drawing.For example, two continuous boxes can actually be basically executed in parallel, they
Sometimes it can also execute in the opposite order, this can be depended on the functions involved.Flow chart and block diagram institute in the accompanying drawings
In corresponding description, operation corresponding to different boxes or step can also be to be different from sequence hair disclosed in description
Raw, there is no specific sequences between sometimes different operations or step.For example, two continuous operations or step actually may be used
To be basically executed in parallel, they can also be executed in the opposite order sometimes, this can be depended on the functions involved.Block diagram
And/or the combination of each box in flow chart and the box in block diagram and or flow chart, it can the function as defined in executing
Can or the dedicated hardware based system of movement realize, or can come using a combination of dedicated hardware and computer instructions real
It is existing.
Claims (10)
1. a kind of control method for air-conditioner defrosting characterized by comprising
In the case where air-conditioning is defrosted, control enters reverse cycle defrosting mode and executes to flowing through the air-conditioning
First heating operation of the refrigerant on the refrigerant outlet tube road of outdoor heat exchanger；
Obtain the outdoor coil temperature of the outdoor heat exchanger, refrigerant goes out liquid temperature and upper body temperature；
Go out liquid temperature in the outdoor coil temperature, the refrigerant and the upper body temperature meets the feelings of defrosting exit criteria
Under condition, control exits the reverse cycle defrosting mode and stops executing first heating operation.
2. control method according to claim 1, which is characterized in that the defrosting exit criteria are as follows:
T1≥T01, t1≥t01, T2≥T02, t2≥t02, T3≥T03, and t3≥t03
Wherein, T1For the outdoor coil temperature of outdoor heat exchanger, T01For the first preset temperature, t1For T1≥T01Duration,
t01For the first preset duration, T2Go out liquid temperature, T for the refrigerant of outdoor heat exchanger02For the second preset temperature, t2For T2≥T02Hold
Continuous duration, t02For the second preset duration, T3For the upper body temperature of outdoor heat exchanger, T03For third preset temperature, t3For T3
≥T03Duration, t03For third preset duration.
3. control method according to claim 1 or 2, which is characterized in that control is executed to flowing through the outdoor heat exchanger
Refrigerant outlet tube road refrigerant the first heating operation, comprising:
The heating parameters of heating are determined according to the degree of superheat of the air-conditioning；
Control is executed according to the heating parameters and is grasped to the first heating of the refrigerant on the refrigerant outlet tube road of the outdoor heat exchanger
Make；
Wherein, the heating parameters include target heating rate, target heating duration or target heating interruption duration.
4. control method according to claim 3, which is characterized in that determine that the target heats speed according to the degree of superheat
Rate, comprising:
According to the degree of superheat, the corresponding rate of heat addition is obtained from rate of heat addition incidence relation；
Using the rate of heat addition as the target heating rate.
5. control method according to claim 3, which is characterized in that when determining target heating according to the degree of superheat
It is long, comprising:
According to the degree of superheat, corresponding heating duration is obtained from heating duration incidence relation；
Duration is heated using the heating duration as the target.
6. control method according to claim 3, which is characterized in that between determining that the target heats according to the degree of superheat
Disconnected duration, comprising:
According to the degree of superheat, corresponding heating interruption duration is obtained from heating interruption duration incidence relation；
Interruption duration is heated using heating interruption duration as the target.
7. control method according to claim 1 or 2, which is characterized in that further include:
After the air-conditioning is switched on heating mode, control is executed to the cold of the refrigerant outlet tube road for flowing through the outdoor heat exchanger
The second heating operation of matchmaker.
8. control method according to claim 7, which is characterized in that after control executes second heating operation, also
Include:
Obtain the suction temperature of the compressor of the air-conditioning；
When the suction temperature of the compressor meets preset temperature condition, control stops second heating operation；
Wherein, the temperature condition includes: that suction temperature is greater than or equal to preset suction temperature threshold value.
9. a kind of control device for air-conditioner defrosting, including processor and the memory for being stored with program instruction, feature exists
In the processor is configured to executing as claimed in any one of claims 1 to 8 be used for when executing described program instruction
The control method of air-conditioner defrosting.
10. a kind of air-conditioning characterized by comprising
Refrigerant circulation circuit connects structure by refrigerant pipeline by outdoor heat exchanger, indoor heat exchanger, throttling set and compressor
At；
Heating device is set to the refrigerant outlet tube road of the outdoor heat exchanger in a heating mode, is configured as to flowing through
The refrigerant on refrigerant outlet tube road is heated；
The control device as claimed in claim 9 for being used for air-conditioner defrosting, is electrically connected with the heating device.
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