CN110470008A - 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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- CN110470008A CN110470008A CN201910712411.6A CN201910712411A CN110470008A CN 110470008 A CN110470008 A CN 110470008A CN 201910712411 A CN201910712411 A CN 201910712411A CN 110470008 A CN110470008 A CN 110470008A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/31—Low ambient temperatures
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
This application involves air-conditioner defrosting technical fields, disclose a kind of control method for air-conditioner defrosting.Control method includes: to control and heat to the refrigerant inlet pipe for the outdoor heat exchanger for flowing through air-conditioning and the refrigerant on refrigerant outlet tube road in the case where air-conditioning is defrosted；The refrigerant of the outdoor coil temperature and outdoor heat exchanger that obtain outdoor heat exchanger goes out liquid temperature；In the case where outdoor coil temperature and refrigerant go out liquid temperature and meet defrosting exit criteria, control stops heating.Go out liquid temperature the two parametric synthesis using the coil temperature and refrigerant of outdoor heat exchanger and judge that air-conditioning exits the opportunity of defrosting, so as to effectively improve the control precision for exiting defrosting to control air-conditioning；And by the heating operation to the refrigerant for flowing through refrigerant inlet pipe 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
Technical field
This application involves air-conditioner defrosting technical fields, for example, be related to a kind of control method and device for air-conditioner defrosting,
Air-conditioning.
Background technique
Currently, the mainstream model of air-conditioning is mostly the heat exchange function for having cooling and warming double mode, here, air-conditioning is cryogenically
Under area or the biggish weather conditions of wind and snow, user is usually to adjust air-conditioning to heating mode, indoor to be promoted using air-conditioning
The temperature of environment；In air conditioner in operation heating operations, the outdoor heat exchanger of outdoor unit is to play to absorb from outdoor environment
The effect of the evaporator of heat is influenced by the temperature and humidity of outdoor environment, and the more ice of condensation is easy on outdoor heat exchanger
Frost, and meeting is so that the heating capacity of air-conditioning can be lower and lower, therefore imitates to guarantee to heat after simultaneously frost knot arrives certain thickness
Fruit avoids frost condensation excessive, it is therefore necessary to defrost to outdoor heat exchanger.
Here, the mode to defrost to outdoor heat exchanger is mainly include the following types: first is that reverse cycle defrosting, air-conditioning carry out
When reverse cycle defrosting, the high temperature refrigerant of compressor discharge first flows through outdoor heat exchanger, to melt frost using refrigerant heat；Second is that
Increase electric heater unit on the refrigerant pipeline of air-conditioning, the refrigerant for flowing into outdoor heat exchanger is heated using electric heater unit, in turn
Melt the frost condensed on outdoor heat exchanger using refrigerant heat；Third is that adjusting the air supply rates such as compressor, electric expansion valve
Operating parameter, to change the temperature and pressure state of refrigerant in refrigerant pipeline, making it also can be played to outdoor heat exchanger defrosting
Effect.
During realizing the embodiment of the present disclosure, at least there are the following problems in the related technology for discovery:
Since the Defrost mode of above-mentioned several pairs of outdoor heat exchangers more or less all can be to the normal heating performance structure of air-conditioning
At influence, therefore air-conditioning will do it judgement before exiting defrosting, and then control whether air-conditioning exits defrosting according to judging result.
In the related technology, it removes generally by judging whether to exit to the mode compared with numerical value between outdoor environment temperature and frost point temperature
Frost.Since the solidifying white situation of outdoor heat exchanger can be influenced by many factors such as outdoor environment and self-operating state simultaneously,
Therefore the above-mentioned judgment mode for whether exiting defrosting mode is excessively rough, is easy to make air-conditioning exit defrosting mode in advance and cause to remove
Frost is not thorough, alternatively, after the completion of defrosting continuous service defrosting mode and influence the normal heating performance of air-conditioning.
Summary of the invention
In order to which some aspects of the embodiment to disclosure have basic understanding, simple summary is shown below.It is described general
Including is not extensive overview, nor to determine key/critical component or describe the protection scope of these embodiments, but is made
For the preamble of following detailed description.
The embodiment of the present disclosure provides a kind of control method and device for air-conditioner defrosting, air-conditioning, to solve related skill
The judgment mode that defrosting mode whether is exited in art is excessively rough, is easy to make air-conditioning exit defrosting mode in advance and cause defrosting not
Thoroughly, alternatively, after the completion of defrosting continuous service defrosting mode and the technical issues of influence air-conditioning normal heating performance.
In some embodiments, the control method for air-conditioner defrosting includes:
In the case where air-conditioning is defrosted, control to the refrigerant inlet pipe of the outdoor heat exchanger for flowing through air-conditioning and
The refrigerant on refrigerant outlet tube road heats；
The refrigerant of the outdoor coil temperature and outdoor heat exchanger that obtain outdoor heat exchanger goes out liquid temperature；
In the case where outdoor coil temperature and refrigerant go out liquid temperature and meet defrosting exit criteria, control stops heating.
In some embodiments, the control device for air-conditioner defrosting includes processor and is stored with program instruction
Memory, processor are configured as when executing program instructions, and execute the above-mentioned control method for air-conditioner defrosting.
In some embodiments, the air-conditioning includes:
Refrigerant circulation circuit is connected by outdoor heat exchanger, indoor heat exchanger, throttling set and compressor by refrigerant pipeline
It constitutes；
First heater is set in the refrigerant inlet pipe of outdoor heat exchanger in a heating mode, is configured as pair
The refrigerant for flowing through refrigerant inlet pipe is heated；
Secondary heating mechanism is set to the refrigerant outlet tube road of outdoor heat exchanger in a heating mode, is configured as pair
The refrigerant for flowing through refrigerant outlet tube road is heated；
The above-mentioned control device for air-conditioner defrosting, is electrically connected with first heater, secondary heating mechanism respectively.
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 goes out the two ginsengs of liquid temperature during Defrost operation, using the coil temperature and refrigerant of outdoor heat exchanger
Number synthesis judges that air-conditioning exits the opportunity of defrosting, so as to effectively improve the control precision for exiting defrosting to control air-conditioning, keeps away
Exempt from air-conditioning to exit defrosting mode in advance and defrosting is caused to be not thorough, alternatively, continuous service defrosting mode and shadow after the completion of defrosting
Ring the normal heating performance of air-conditioning；And by the heating operation to the refrigerant for flowing through refrigerant inlet pipe and refrigerant outlet tube road,
The refrigerant temperature for flowing into outdoor heat exchanger can either be effectively improved and then melted using refrigerant heat and condensed on outdoor heat exchanger
Frost can also be improved the refrigerant temperature for being back to compressor, to promote heating efficiency, reduce frost condensation to air-conditioning itself
The adverse effect of heating performance.
Above general description and it is discussed below be only it is exemplary and explanatory, be not used in limitation the application.
Detailed description of the invention
One or more embodiments are illustrated by corresponding attached drawing, these exemplary illustrations and attached drawing
The restriction to embodiment is not constituted, the element with same reference numbers label is shown as similar element in attached drawing, and attached drawing is not
Composition limitation, and wherein:
Fig. 1 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides；
Fig. 2 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides；
Fig. 3 is the structural schematic diagram for the control device for air-conditioner defrosting that the embodiment of the present disclosure provides；
Fig. 4 is the structural schematic diagram for the air-conditioning that the embodiment of the present disclosure provides.
Specific embodiment
The characteristics of in order to more fully hereinafter understand the embodiment of the present disclosure and technology contents, with reference to the accompanying drawing to this public affairs
The realization for opening embodiment is described in detail, appended attached drawing purposes of discussion only for reference, is not used to limit the embodiment of the present disclosure.
In technical description below, for convenience of explanation for the sake of, disclosed embodiment is fully understood with providing by multiple details.
However, one or more embodiments still can be implemented in the case where without these details.It in other cases, is simplification
Attached drawing, well known construction and device can simplify displaying.
Fig. 1 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides.
A kind of control method for air-conditioner defrosting is provided in the embodiment of the present disclosure, as shown in Figure 1, including following step
It is rapid:
S101: in the case where air-conditioning is defrosted, the refrigerant feed liquor to the outdoor heat exchanger for flowing through air-conditioning is controlled
Pipeline and the heating of the refrigerant on refrigerant outlet tube road.
Optionally, judge by way of compared with numerical value between outdoor environment temperature and frost point temperature air-conditioning whether need into
Row defrosting.When outdoor environment temperature is lower than frost point temperature, then it is assumed that air-conditioning defrosts；When outdoor environment temperature is higher than
When frost point temperature, then it is assumed that air-conditioning is without defrosting.
The defrosting operation of air-conditioning includes that control goes out liquid to the refrigerant inlet pipe and refrigerant of the outdoor heat exchanger for flowing through air-conditioning
The refrigerant of pipeline is heated, and can either be effectively improved the refrigerant temperature for flowing into outdoor heat exchanger and then be melted using refrigerant heat
Change the frost condensed on outdoor heat exchanger, can also be improved the refrigerant temperature for being back to compressor, to promote heating efficiency, drops
Adverse effect of the low frost condensation to air-conditioning itself heating performance.
Optionally, it is provided with first heater at the refrigerant inlet pipe of outdoor heat exchanger of air conditioner, the first heating dress
It sets and is arranged to controllably heat the refrigerant for flowing through refrigerant inlet pipe.It, can be in the case where air-conditioning needs to defrost
First heater is opened in control；And in the case where air-conditioning is without heating, then keep the closed state of first heater.It is empty
It adjusts and is provided with secondary heating mechanism at the refrigerant outlet tube road of outdoor heat exchanger, which is arranged to controllably right
The refrigerant for flowing through refrigerant outlet tube road is heated.In the case where air-conditioning needs to defrost, unlatching the second heating dress can control
It sets；And in the case where air-conditioning is without heating, then keep the closed state of secondary heating mechanism.
In one embodiment, first heater and secondary heating mechanism are electromagnetic heater, and electromagnetic heater is
Refrigerant pipeline is heated using the principle of electromagnetic induction heating, and then is conducted heat to using refrigerant pipeline and flows through refrigerant pipeline
Refrigerant, to 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 should be understood that the type of first heater and secondary heating mechanism that the application is used to heat refrigerant is not
It is limited to above-mentioned electromagnetic heater, in the related technology the other types of heating device that can be used in directly or indirectly heating refrigerant
The technical solution of the application can also be applied, and covered within the scope of protection of this application.
S102: the refrigerant of the outdoor coil temperature and outdoor heat exchanger that obtain outdoor heat exchanger goes out liquid 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.
S103: in the case where outdoor coil temperature and refrigerant go out liquid temperature and meet defrosting exit criteria, control stops adding
Heat.
It is heated in the refrigerant by refrigerant inlet pipe and refrigerant outlet tube road to the outdoor heat exchanger for flowing through air-conditioning
In the process, using the outdoor coil temperature of outdoor heat exchanger and refrigerant go out liquid temperature the two 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.Therefore, the two parametric synthesis of liquid temperature judgement outdoor is gone out by the outdoor coil temperature of outdoor heat exchanger and refrigerant
The defrosting situation of heat exchanger can effectively improve the control precision for exiting defrosting to control air-conditioning, avoid air-conditioning from exiting in advance and remove
White mode and cause defrosting be not thorough, alternatively, after the completion of defrosting continuous service defrosting mode and influence air-conditioning and normally heat
Performance.
Optionally, defrost exit criteria are as follows:
T1≥T01, t1≥t01, T2≥T02, t2≥t02, and T0-T2< Δ T0
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, T0The initial refrigerant of outdoor heat exchanger goes out liquid temperature, Δ T when being switched on for air-conditioning0For
Fiducial temperature threshold value.
Optionally, the first preset temperature is in the air-conditioner defrosting test process prestored, after the completion of outdoor heat exchanger defrosting
The correction temperature of outdoor coil temperature.After the completion of outdoor heat exchanger defrosting, outdoor coil temperature can be due to originals such as white water evaporations
Because there is certain fluctuation.Therefore outdoor after the completion of defrosting to the outdoor heat exchanger detected in air-conditioner defrosting test process
Coil temperature 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, 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.
Initial refrigerant when air-conditioning is switched on goes out liquid temperature and the temperature difference for going out liquid temperature in real time of outdoor heat exchanger is able to reflect
The defrosting situation of outdoor heat exchanger.Air-conditioning be switched on when outdoor heat exchanger initial refrigerant go out liquid temperature be outdoor heat exchanger it is frostless or
Refrigerant when few frost goes out liquid temperature, and therefore, initial refrigerant when air-conditioning is switched on goes out liquid temperature and the refrigerant of outdoor heat exchanger goes out liquid
The temperature difference of temperature is smaller, shows that the frosting degree of outdoor heat exchanger is fewer, defrosts more thorough.
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；Initial refrigerant when air-conditioning is switched on goes out the real-time liquid temperature out of liquid temperature and outdoor heat exchanger
The temperature difference is less than fiducial temperature threshold value, further reflects when the heating performance of outdoor heat exchanger restores to outdoor heat exchanger to be switched on
State, outdoor heat exchanger defrosting are more thorough.Therefore, the refrigerant inlet pipe to the outdoor heat exchanger for flowing through air-conditioning can be stopped
Refrigerant heating, exit the Defrost operation mode of air-conditioning.
In the present embodiment, air-conditioning goes out liquid during Defrost operation, using the coil temperature and refrigerant of outdoor heat exchanger
The two parametric synthesis of temperature judge that air-conditioning exits the opportunity of defrosting, exit defrosting to control air-conditioning so as to effectively improve
Precision is controlled, avoids air-conditioning from exiting defrosting mode in advance and defrosting is caused to be not thorough, alternatively, continuous service removes after the completion of defrosting
White mode and influence the normal heating performance of air-conditioning.In addition, the defrosting operation of air-conditioning includes that the outdoor for flowing through air-conditioning is changed in control
The refrigerant inlet pipe of hot device and the refrigerant on refrigerant outlet tube road are heated, and can either be effectively improved and be flowed into outdoor heat exchanger
Refrigerant temperature melts the frost condensed on outdoor heat exchanger using refrigerant heat in turn, can also be improved and is back to compressor
Refrigerant temperature reduces frost condensation to the adverse effect of air-conditioning itself heating performance to promote heating efficiency.
Fig. 2 is the flow diagram for the control method for air-conditioner defrosting that the embodiment of the present disclosure provides.
A kind of control method for air-conditioner defrosting is provided in the embodiment of the present disclosure, as shown in Fig. 2, including following step
It is rapid:
S201: judge whether air-conditioning defrosts.
S202: it in the case where air-conditioning is defrosted, is changed according to refrigerant feed liquor temperature and the outdoor of outdoor heat exchanger
The temperature gap that the refrigerant of hot device goes out liquid temperature determines the first heating parameters of heating.
Optionally, the first heating parameters include the first object rate of heat addition or first object heating duration.
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 real time temperature of the refrigerant for the refrigerant inlet pipe for flowing through outdoor heat exchanger.Therefore, the institute in step S202
The refrigerant feed liquor temperature of the outdoor heat exchanger of acquisition can be the real-time temperature by refrigerant detected by third temperature sensor
Degree.Here, when refrigerant inlet pipe is run for air-conditioning with heating mode refrigerant flow into outdoor heat exchanger via pipeline.
The temperature gap that the refrigerant feed liquor temperature of outdoor heat exchanger and the refrigerant of outdoor heat exchanger go out liquid temperature is smaller, then says
Bright refrigerant heat absorption heating efficiency is lower, and the frosting degree of outdoor heat exchanger of air conditioner is more serious, needs to improve first object at this time
The rate of heat addition increases first object and heats duration, shortens first object heating interruption duration, accelerates defrost；Outdoor heat exchanger
The temperature gap that the refrigerant of refrigerant feed liquor temperature and outdoor heat exchanger goes out liquid temperature is larger, then illustrate refrigerant heat absorption heating efficiency compared with
Height, the frosting lesser extent of outdoor heat exchanger of air conditioner can suitably reduce the first object rate of heat addition, shorten first object heating
Duration increases first object heating interruption duration, plays the role of energy-efficient.Therefore, can according to the refrigerant of outdoor heat exchanger into
The temperature gap that liquid temperature and refrigerant go out liquid temperature determines the first heating parameters of heating.
Optionally, according to temperature gap, corresponding first rate of heat addition is obtained from the first rate of heat addition incidence relation simultaneously
Using first rate of heat addition as the first object rate of heat addition.
It include the corresponding relationship of one or more temperature gaps and first rate of heat addition in first rate of heat addition incidence relation.
For example, table 1 shows corresponding relationship (wherein, the Δ T=T of a kind of optional temperature gap and first rate of heat addition2-T3, Δ T is
The refrigerant feed liquor temperature and refrigerant of outdoor heat exchanger go out the temperature gap of liquid temperature, T3For the refrigerant feed liquor temperature of outdoor heat exchanger
Degree):
1: the first rate of heat addition incidence relation of table
| Temperature gap (unit: DEG C) | First rate of heat addition (unit: DEG C/min) |
| a11< Δ T≤a12 | V11 |
| a12< Δ T≤a13 | V12 |
| a13< Δ T | V13 |
In first rate of heat addition incidence relation, first rate of heat addition and temperature gap are negatively correlated.That is, temperature gap is got over
Greatly, first rate of heat addition is smaller；Temperature gap is smaller, and first rate of heat addition is bigger.
Optionally, according to temperature gap, corresponding first heating duration is obtained from the first heating duration incidence relation simultaneously
Duration is heated using the first heating duration as first object.
It include the corresponding relationship of one or more temperature gaps and the first heating duration in first heating duration incidence relation.
For example, table 2 shows the corresponding relationship of a kind of optional temperature gap and the first heating duration:
Table 2: the first heats duration incidence relation
| Temperature gap (unit: DEG C) | First heating duration (unit: min) |
| a11< Δ T≤a12 | t11 |
| a12< Δ T≤a13 | t12 |
| a13< Δ T | t13 |
In first heating duration incidence relation, the first heating duration and temperature gap are negatively correlated.That is, temperature gap is got over
Greatly, the first heating duration is smaller；Temperature gap is smaller, and the first heating duration is bigger.
S203: control is heated according to refrigerant of first heating parameters to the refrigerant inlet pipe for flowing through outdoor heat exchanger.
Corresponding first heating parameters (the first object rate of heat addition and the are being obtained according to the first heating parameters incidence relation
One target heats duration) after, it is heated according to corresponding first heating parameters.In the case where ensuring that air-conditioning normally defrosts,
The operation power consumption for reducing heating devices heat refrigerant to the greatest extent, plays the role of energy-efficient.
S204: the second heating parameters of heating are determined according to the degree of superheat of air-conditioning.
Optionally, the second heating parameters include that the second target heating rate or the second target heat 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, need to improve the second target at this time
The rate of heat addition increases by the second target and heats duration, shortens the second target heating interruption duration, improves the back pressure and temperature of air-conditioning
Degree；The degree of superheat of air-conditioning is smaller, then illustrates that the back pressure of air-conditioning and temperature are higher, can suitably reduce the second target heating speed
Rate shortens the second target and heats duration, increases the second target heating interruption duration, to reduce the function of secondary heating mechanism operation
Consumption, reduces the use cost of air-conditioning.Therefore, the second heating parameters of heating can be determined with the degree of superheat of air-conditioning.
Optionally, according to the degree of superheat, corresponding second rate of heat addition is obtained from the second rate of heat addition incidence relation and is incited somebody to action
Second rate of heat addition is as the second target heating rate.
It include the corresponding relationship of the one or more degrees of superheat and second rate of heat addition in second rate of heat addition incidence relation.Example
Such as, table 3 shows the corresponding relationship of a kind of optional degree of superheat and second rate of heat addition:
3: the second rate of heat addition incidence relation of table
| The degree of superheat (unit: DEG C) | Second rate of heat addition (unit: DEG C/min) |
| a21< SC≤a22 | V21 |
| a22< SC≤a23 | V22 |
| a23< SC | V23 |
In second rate of heat addition incidence relation, second rate of heat addition is positively correlated with the degree of superheat.That is, the degree of superheat is bigger, the
Two rates of heat addition are bigger；The degree of superheat is smaller, and second rate of heat addition is smaller.
Optionally, according to the degree of superheat, corresponding second heating duration is obtained from the second heating duration incidence relation and is incited somebody to action
Second heating duration heats duration as the second target.
It include the corresponding relationship of one or more degrees of superheat with the second heating duration in second heating duration incidence relation.Example
Such as, table 4 shows the corresponding relationship of a kind of optional degree of superheat and the second heating duration:
Table 4: the second heats duration incidence relation
| The degree of superheat (unit: DEG C) | Second heating duration (unit: min) |
| a21< SC≤a22 | t21 |
| a22< SC≤a23 | t22 |
| a23< SC | t23 |
In second heating duration incidence relation, the second heating duration is positively correlated with the degree of superheat.That is, the degree of superheat is bigger, the
Two heating durations are bigger；The degree of superheat is smaller, and the second heating duration is smaller.
S205: control is heated according to refrigerant of second heating parameters to the refrigerant outlet tube road for flowing through outdoor heat exchanger.
According to the second heating parameters incidence relation obtain corresponding second heating parameters (the second target heating rate and
Two targets heat duration) after, it is heated according to corresponding second heating parameters.In the feelings for ensuring the normal heating performance of air-conditioning
Under condition, reduces the operation power consumption of heating devices heat refrigerant to the greatest extent, play the role of energy-efficient.
S206: the refrigerant of the outdoor coil temperature and outdoor heat exchanger that obtain outdoor heat exchanger goes out liquid temperature.
S207: judge that outdoor coil temperature and refrigerant go out whether liquid temperature meets defrosting exit criteria.
S208: in the case where outdoor coil temperature and refrigerant go out liquid temperature and meet defrosting exit criteria, control stops adding
Heat.
In the present embodiment, heating devices heat refrigerant is defrosted and further increases the heating performance of air-conditioning, certain journey
Additional power consumption can be brought on degree.Therefore go out the case where liquid temperature meets defrosting exit criteria in outdoor coil temperature and refrigerant
Under, control stops heating, reduces the loss of heating device, reduces 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；
First heater 451 is set in the refrigerant inlet pipe of outdoor heat exchanger 41 in a heating mode, is configured
To be heated to the refrigerant for flowing through refrigerant inlet pipe；
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；
The above-mentioned control device 46 for air-conditioner defrosting, it is electric with first heater 451, secondary heating mechanism 452 respectively
Connection.
It is comprehensive to go out liquid temperature the two parameters using the coil temperature and refrigerant of outdoor heat exchanger for air-conditioning provided in this embodiment
Conjunction judges that air-conditioning exits the opportunity of defrosting, so as to effectively improve the control precision for exiting defrosting to control air-conditioning；And pass through
Heating operation to the refrigerant for flowing through refrigerant inlet pipe and refrigerant outlet tube road, can either effectively improve inflow outdoor heat exchanger
Refrigerant temperature so that melt the frost that condenses on outdoor heat exchanger using refrigerant heat, can also be improved and be back to compressor
Refrigerant temperature reduce frost condensation to the adverse effect of air-conditioning itself heating performance to promote heating efficiency.
The embodiment of the present disclosure provides a kind of computer readable storage medium, is stored with computer executable instructions, described
Computer executable instructions are arranged to carry out the above-mentioned control method for air-conditioner defrosting.
The embodiment of the present disclosure provides a kind of computer program product, and the computer program product includes being stored in calculating
Computer program on machine readable storage medium storing program for executing, the computer program include program instruction, when described program instruction is calculated
When machine executes, the computer is made to execute the above-mentioned control method for air-conditioner defrosting.
Above-mentioned computer readable storage medium can be transitory computer readable storage medium, be also possible to non-transient meter
Calculation machine readable storage medium storing program for executing.
The technical solution of the embodiment of the present disclosure can be embodied in the form of software products, which deposits
Storage in one storage medium, including one or more instruction is used so that computer equipment (can be personal computer,
Server or the network equipment etc.) execute embodiment of the present disclosure the method all or part of the steps.And storage above-mentioned is situated between
Matter can be non-transient storage media, comprising: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), with
Machine accesses a variety of Jie that can store program code such as memory (RAM, Random Access Memory), magnetic or disk
Matter is also possible to transitory memory medium.
Above description and attached drawing sufficiently illustrate embodiment of the disclosure, to enable those skilled in the art to practice
They.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment only represents
Possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can change.
The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.The embodiment of the present disclosure
Range includes the entire scope of claims and all obtainable equivalents of claims.When for the application
When middle, although term " first ", " second " etc. may be used in this application to describe each element, these elements should not be by
To the limitation of these terms.These terms are only used to differentiate an element with another element.For example, not changing description
Meaning in the case where, first element can be called second element, and same, and second element can be called first element,
As long as " first element " that is occurred unanimously renames and " second element " occurred unanimously renames.First
Element and second element are all elements, but can not be identical element.Moreover, word used herein is only used for describing
Embodiment and it is not used in limitation claim.As used in the description in embodiment and claim, unless context
It clearly illustrates, otherwise "one" (a) of singular, "one" (an) and " described " (the) is intended to equally include plural shape
Formula.Similarly, term "and/or" refers to and associated lists comprising one or more as used in this specification
Any and all possible combination.In addition, when in the application, term " includes " (comprise) and its modification " packet
Include " (comprises) and/or feature, entirety, step, operation, element and/or group including the statement such as (comprising) fingers
The presence of part, but it is not excluded for one or more other features, entirety, step, operation, element, component and/or these point
The presence or addition of group.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method or equipment for including the element.Herein, each embodiment emphasis
What is illustrated can be the difference from other embodiments, and the same or similar parts in each embodiment can refer to each other.It is right
For the method disclosed in embodiment, product etc., if it is corresponding with method part disclosed in embodiment, related place
It may refer to the description of method part.
It will be appreciated by those of skill in the art that unit described in conjunction with the examples disclosed in the embodiments of the present disclosure and
Algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually with hard
Part or software mode execute, and can depend on the specific application and design constraint of technical solution.The technical staff
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The range of the embodiment of the present disclosure.The technical staff can be understood that, for convenience and simplicity of description, foregoing description
The specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, no longer superfluous herein
It states.
In embodiments disclosed herein, disclosed method, product (including but not limited to device, equipment etc.) can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
Divide, can be only a kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or
Component can be combined or can be integrated into another system, or some features can be ignored or not executed.In addition, shown
Or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit it is indirect
Coupling or communication connection can be electrical property, mechanical or other forms.The unit as illustrated by the separation member can be or
Person, which may not be, to be physically separated, and component shown as a unit may or may not be physical unit
With in one place, or may be distributed over multiple network units.Portion therein can be selected according to the actual needs
Point or whole unit realize the present embodiment.In addition, each functional unit in the embodiments of the present disclosure can integrate at one
In processing unit, it is also possible to each unit and physically exists alone, a list can also be integrated in two or more units
In member.
The flow chart and block diagram in the drawings show system, the method and computer program products according to the embodiment of the present disclosure
Architecture, function and operation in the cards.In this regard, each box in flowchart or block diagram can represent one
A part of module, section or code, a part of the module, section or code include it is one or more for realizing
The executable instruction of defined logic function.In some implementations as replacements, function marked in the box can also be with
Occur different from the sequence marked in attached drawing.For example, two continuous boxes can actually be basically executed in parallel, they
Sometimes it can also execute in the opposite order, this can be depended on the functions involved.Flow chart and block diagram institute in the accompanying drawings
In corresponding description, operation corresponding to different boxes or step can also be to be different from sequence hair disclosed in description
Raw, there is no specific sequences between sometimes different operations or step.For example, two continuous operations or step actually may be used
To be basically executed in parallel, they can also be executed in the opposite order sometimes, this can be depended on the functions involved.Block diagram
And/or the combination of each box in flow chart and the box in block diagram and or flow chart, it can the function as defined in executing
Can or the dedicated hardware based system of movement realize, or can come using a combination of dedicated hardware and computer instructions real
It is existing.
Claims (10)
1. a kind of control method for air-conditioner defrosting characterized by comprising
In the case where air-conditioning is defrosted, control to the refrigerant inlet pipe of the outdoor heat exchanger for flowing through the air-conditioning and
The refrigerant on refrigerant outlet tube road heats；
The refrigerant of the outdoor coil temperature and the outdoor heat exchanger that obtain the outdoor heat exchanger goes out liquid temperature；
In the case where the outdoor coil temperature and the refrigerant go out liquid temperature and meet defrosting exit criteria, control stops adding
Heat.
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, and T0-T2<ΔT0
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, T0The initial refrigerant of outdoor heat exchanger when being switched on for air-conditioning goes out liquid temperature, Δ T0It is pre-
If temperature difference threshold.
3. control method according to claim 1 or 2, which is characterized in that control is to flowing through the cold of the outdoor heat exchanger
The refrigerant of matchmaker's inlet pipe heats, comprising:
Go out the temperature gap of liquid temperature according to the refrigerant of the refrigerant feed liquor temperature of the outdoor heat exchanger and the outdoor heat exchanger
Determine the first heating parameters of heating；
Control is heated according to refrigerant of first heating parameters to the refrigerant inlet pipe for flowing through the outdoor heat exchanger；
Wherein, first heating parameters include the first object rate of heat addition or first object heating duration.
4. control method according to claim 3, which is characterized in that according to the refrigerant feed liquor temperature of the outdoor heat exchanger
The first object rate of heat addition is determined with the temperature gap that the refrigerant of the outdoor heat exchanger goes out liquid temperature, comprising:
According to the temperature gap, corresponding first rate of heat addition is obtained from the first rate of heat addition incidence relation；
Using first rate of heat addition as the first object rate of heat addition.
5. control method according to claim 3, which is characterized in that according to the refrigerant feed liquor temperature of the outdoor heat exchanger
The first object heating duration is determined with the temperature gap that the refrigerant of the outdoor heat exchanger goes out liquid temperature, comprising:
According to the temperature gap, corresponding first heating duration is obtained from the first heating duration incidence relation；
Duration is heated using the first heating duration as the first object.
6. control method according to claim 1 or 2, which is characterized in that control is to flowing through the cold of the outdoor heat exchanger
The refrigerant on matchmaker's outlet tube road heats, comprising:
The second heating parameters of heating are determined according to the degree of superheat of the air-conditioning；
Control is heated according to refrigerant of second heating parameters to the refrigerant outlet tube road for flowing through the outdoor heat exchanger；
Wherein, second heating parameters include that the second target heating rate or the second target heat duration.
7. control method according to claim 6, which is characterized in that determine that second target adds according to the degree of superheat
Hot rate, comprising:
According to the degree of superheat, corresponding second rate of heat addition is obtained from the second rate of heat addition incidence relation；
Using second rate of heat addition as second target heating rate.
8. control method according to claim 6, which is characterized in that determine that second target adds according to the degree of superheat
Hot duration, comprising:
According to the degree of superheat, corresponding second heating duration is obtained from the second heating duration incidence relation；
Duration is heated using the second heating duration as second target.
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 refrigerant outlet tube road of the outdoor heat exchanger in a heating mode, is configured as pair
The refrigerant for flowing through refrigerant outlet tube road is heated；
The control device as claimed in claim 9 for being used for air-conditioner defrosting adds with the first heater, described second respectively
Thermal electrical connection.
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