CN106839312A - The control method and control device and air-conditioner of defrost are not shut down - Google Patents
The control method and control device and air-conditioner of defrost are not shut down Download PDFInfo
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- CN106839312A CN106839312A CN201710065351.4A CN201710065351A CN106839312A CN 106839312 A CN106839312 A CN 106839312A CN 201710065351 A CN201710065351 A CN 201710065351A CN 106839312 A CN106839312 A CN 106839312A
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- defrost
- heat exchanger
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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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a kind of control method and control device and air-conditioner for not shutting down defrost.Wherein, a kind of control method for not shutting down defrost, including：When air-conditioner is in heating mode, the temperature T1 and T2 of the first outdoor heat exchanger and the second outdoor heat exchanger are detected respectively；The first outdoor heat exchanger is recorded respectively and the second outdoor heat exchanger is in the duration t1 and t2 of heating mode；Judge whether T1 and t1 and T2 and t2 reach defrost condition respectively；Defrost is carried out according to judged result the first outdoor heat exchanger of control or the second outdoor heat exchanger.By technical scheme; compressor is not shut down during realizing outdoor heat exchanger defrost; indoor set continues the purpose of continuously heating; defrost speed is accelerated, so that the defrost time is saved, while avoiding the problem of high frequent start and stop during correlation technique defrost; reach saving energy consumption; the purpose of air-conditioning fault rate is reduced, air conditioner heat-production comfortableness, reliability is effectively improved, Consumer's Experience is lifted.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of control method for not shutting down defrost and control dress
Put, further relate to a kind of air-conditioner.
Background technology
At present, the Defrost mode that heat pump (air-conditioning) system is generally used for：Compressor shutdown, then four-way valve commutation, then
Start compressor defrosting.Its specific defrosting process is：--- stop compressor --- four-way valve commutation --- into defrosting mode
--- --- four-way valve commutation --- starts compressor and heats --- anti-cold wind --- end to stop compressor to start compressor defrosting
Defrosting bring influence, normally heat.This Defrost mode has the following disadvantages：
One, a defrosting cycle need start and stop compressor 2 times, start high energy consumption, big to power network impact, and frequent start-stop can be carried
The fault rate of high compressor.
Secondly, the commutation of start/stop of compressor, four-way valve about need 5 minutes, whole defrosting process about need 12 minutes with
On, severe condition is such as run into, defrosting time can be longer, and interior is no heating capacity output during defrosting, this
The heating effect of heat pump can be had a strong impact on, heating capacity is reduced, the comfortableness of air-conditioning is reduced.
Therefore, how a kind of control method for not shutting down defrost is provided, air conditioner fault rate is reduced, as urgently solving at present
Problem certainly.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art or correlation technique.
Therefore, it is an object of the present invention to propose a kind of control method for not shutting down defrost.
It is another object of the present invention to propose a kind of control device for not shutting down defrost.
A further object of the present invention is to propose a kind of air-conditioner.
In view of this, the present invention proposes a kind of control method for not shutting down defrost, and for air-conditioner, air-conditioner includes the
One outdoor heat exchanger and the second outdoor heat exchanger, the control method that defrost is not shut down include：Heating mode is in air-conditioner
When, the temperature T1 and T2 of the first outdoor heat exchanger and the second outdoor heat exchanger are detected respectively；The first outdoor heat exchanger is recorded respectively
With the duration t1 and t2 that the second outdoor heat exchanger is in heating mode；Judge whether T1 and t1 and T2 and t2 reach defrost respectively
Condition；Defrost is carried out according to judged result the first outdoor heat exchanger of control or the second outdoor heat exchanger.
The control method for not shutting down defrost of the invention, into after heating mode, by detecting the first Room respectively
The temperature T of external heat exchanger1With the temperature T2 of the second outdoor heat exchanger, meanwhile, the first outdoor heat exchanger and second Room are recorded respectively
External heat exchanger is in the time t1 and t2 for heating working condition, so as to monitor the order of severity of its frosting, and is sentenced by T1 and t1
Whether disconnected first outdoor heat exchanger has reached the condition of defrosting, judges whether the second outdoor heat exchanger has reached by T2 and t2 and removes
The condition of frost, defrost is carried out according to judged result to the first outdoor heat exchanger or the second outdoor heat exchanger, realizes outdoor heat exchange
Compressor is not shut down during device defrost, and indoor set continues the purpose of continuously heating, defrost speed is accelerated, so that saving
The white time, while avoiding the problem of high frequent start and stop during correlation technique defrost, saving energy consumption is reached, reduce air-conditioning
The purpose of fault rate, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
In addition, according to the above-mentioned control method for not shutting down defrost of the present invention, can also have following additional technology special
Levy：
In the above-mentioned technical solutions, it is preferable that according to judged result to the first outdoor heat exchanger or the second outdoor heat exchanger
Carrying out defrost includes：When T1 and t1 reach defrost condition, and T2 and t2 control the first outdoor heat exchanger when being not up to defrost condition
Carry out defrost；After first outdoor heat exchanger starts defrost, T1 described in real-time detection, and record first outdoor heat exchange
The defrost time t1' of device, judges whether the T1 and t1' reaches and exits defrost condition；And in the case where the judgment result is yes,
The first outdoor heat exchanger is controlled to exit defrost.
In the technical scheme, when T1 and t1 reach defrost condition, and T2 and t2 are when being not up to defrost condition, illustrate first
Outdoor heat exchanger reaches defrost condition, now controls the first outdoor heat exchanger to carry out defrost, continues to monitor the first outdoor heat exchanger
Temperature T1, and record defrosting time t1', after T1 or t1' reach the condition for exiting defrosting, then control the first outdoor heat exchanger
Defrosting mode is exited, the second outdoor heat exchanger, still in heating mode, is realized during defrosting by the first outdoor heat exchanger
Compressor is not shut down, and indoor set continues the purpose of continuously heating, accelerates defrost speed, so that save the defrost time, together
When avoid the problem of high frequent start and stop during correlation technique defrost, reach saving energy consumption, reduce air-conditioning fault rate
Purpose, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
In any of the above-described technical scheme, it is preferable that when T2 and t2 reach defrost condition, and T1 and t1 are not up to defrost bar
During part, the second outdoor heat exchanger of control carries out defrost；After second outdoor heat exchanger starts defrost, described in real-time detection
T2, and the defrost time t2' of second outdoor heat exchanger is recorded, judge whether the T2 and t2' reaches and exit defrost condition；
And in the case where the judgment result is yes, the second outdoor heat exchanger of control exits defrost.
In the technical scheme, when T2 and t2 reach defrost condition, and T1 and t1 are when being not up to defrost condition, illustrate second
Outdoor heat exchanger reaches defrost condition, now controls the second outdoor heat exchanger to carry out defrost, continues to monitor the second outdoor heat exchanger
Temperature T2, and record defrosting time t2', work as T2Or after t2' reaches the condition for exiting defrosting, then control the second outdoor heat exchanger
Defrosting mode is exited, the first outdoor heat exchanger, still in heating mode, is realized during defrosting by the second outdoor heat exchanger
Compressor is not shut down, and indoor set continues the purpose of continuously heating, accelerates defrost speed, so that save the defrost time, together
When avoid the problem of high frequent start and stop during correlation technique defrost, reach saving energy consumption, reduce air-conditioning fault rate
Purpose, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
In any of the above-described technical scheme, it is preferable that when T1 and t1 and T2 and t2 reaches defrost condition simultaneously, by T1
Contrasted with T2；When T1 is less than T2, the first outdoor heat exchanger of control starts defrost；When T1 is more than T2, second Room is controlled
External heat exchanger starts defrost.
In the technical scheme, when T1 and t1 and T2 and t2 reaches defrost condition simultaneously, the first outdoor heat exchange is illustrated
Device and the second outdoor heat exchanger have all reached defrost condition, in this case, are contrasted by by T1 and T2, according to contrast
The outdoor heat exchanger of output control first or second starts defrost, when T1 is less than T2, illustrates the temperature of the first outdoor heat exchanger
Lower, then the degree of the first outdoor heat exchanger surface frosting is more serious, now, the first outdoor heat exchanger of control starts defrost；
Conversely, the temperature of the second outdoor heat exchanger of explanation is lower, then the degree of the second outdoor heat exchanger surface frosting is more serious, this
When, the second outdoor heat exchanger of control starts defrost；Enable the leading defrost of serious outdoor heat exchanger of frosting degree, it is to avoid
Heating effect is influenceed when frosting is serious, it is ensured that air-conditioner normally runs, effectively improve air conditioner heat-production comfortableness, while also dropping
Low air conditioner fault rate, lifts the reliability of air-conditioner.
In any of the above-described technical scheme, it is preferable that when T1 is equal to T2, further contrasted t1 and t2；Work as t1
During more than t2, the first outdoor heat exchanger of control starts defrost；When t1 is less than t2, the second outdoor heat exchanger of control starts defrost.
In the technical scheme, when T1 is identical with T2, by contrasting the first outdoor heat exchanger and the second outdoor heat exchanger
Duration t1 and t2 in heating mode, control the first or second outdoor heat exchanger to start defrost according to comparing result, work as t1
During more than t2, illustrate that the first outdoor heat exchanger heating operation time is longer, easy frosting now controls the first outdoor heat exchanger to open
Beginning defrost；Conversely, the second outdoor heat exchanger heating operation time of explanation is longer, easy frosting now controls the second outdoor heat exchange
Device starts defrost；Enable the leading defrost of serious outdoor heat exchanger of frosting degree, it is to avoid influence is heated when frosting is serious
Effect, it is ensured that air-conditioner normally runs, effectively improves air conditioner heat-production comfortableness, while air conditioner fault rate is also reduced,
Lift the reliability of air-conditioner.
In any of the above-described technical scheme, it is preferable that when t1 is equal to t2, according to default preferential defrost sequential control first
Outdoor heat exchanger or the second outdoor heat exchanger defrost.
In the technical scheme, when t1 is equal to t2, by the preferential defrost that pre-sets sequentially, control first is outdoor
Heat exchanger or the second outdoor heat exchanger defrost so that during one of outdoor heat exchanger defrost, another outdoor heat exchanger is still located
In heating operations, compressor is not shut down during realizing outdoor heat exchanger defrost, and indoor set continues the mesh of continuously heating
, defrost speed is accelerated, so that the defrost time is saved, while avoiding high frequent start and stop during correlation technique defrost
Problem, reach saving energy consumption, reduce the purpose of air-conditioning fault rate, effectively improve air conditioner heat-production comfortableness, reliability,
Lifting Consumer's Experience.
In any of the above-described technical scheme, it is preferable that defrost when the first outdoor heat exchanger and different the second outdoor heat exchanger.
In the technical scheme, defrost during by the first outdoor heat exchanger and different the second outdoor heat exchanger, it is ensured that its
In an outdoor heat exchanger defrost when, another outdoor heat exchanger realizes outdoor heat exchanger still in heating mode
Compressor is not shut down during frost, and indoor set continues the purpose of continuously heating, defrost speed is accelerated, so that when saving defrost
Between, while avoiding the problem of high frequent start and stop during correlation technique defrost, saving energy consumption is reached, reduce air-conditioning failure
The purpose of rate, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
The present invention also proposes a kind of control device for not shutting down defrost, and for air-conditioner, air-conditioner is changed including the first outdoor
Hot device and the second outdoor heat exchanger, the control device that defrost is not shut down include：Detection unit, heats for being in air-conditioner
During pattern, the temperature T1 and T2 of the first outdoor heat exchanger and the second outdoor heat exchanger are detected respectively；Recording unit, for remembering respectively
Record the first outdoor heat exchanger and the second outdoor heat exchanger is in the duration t1 and t2 of heating mode；First judging unit, for dividing
Do not judge whether T1 and t1 and T2 and t2 reach defrost condition；Control unit, for outdoor according to judged result control first
Heat exchanger or the second outdoor heat exchanger carry out defrost.
The control device for not shutting down defrost of the invention, into after heating mode, by detecting the first Room respectively
The temperature T1 of the external heat exchanger and temperature T2 of the second outdoor heat exchanger, meanwhile, the first outdoor heat exchanger and second Room are recorded respectively
External heat exchanger is in the time t1 and t2 for heating working condition, so as to monitor the order of severity of its frosting, and is sentenced by T1 and t1
Whether disconnected first outdoor heat exchanger has reached the condition of defrosting, judges whether the second outdoor heat exchanger has reached by T2 and t2 and removes
The condition of frost, defrost is carried out according to judged result to the first outdoor heat exchanger or the second outdoor heat exchanger, realizes outdoor heat exchange
Compressor is not shut down during device defrost, and indoor set continues the purpose of continuously heating, defrost speed is accelerated, so that saving
The white time, while avoiding the problem of high frequent start and stop during correlation technique defrost, saving energy consumption is reached, reduce air-conditioning
The purpose of fault rate, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
In addition, according to the above-mentioned control device for not shutting down defrost of the present invention, can also have following additional technology special
Levy：
In the above-mentioned technical solutions, it is preferable that control unit is according to judged result to the first outdoor heat exchanger or second Room
External heat exchanger carries out defrost to be included：When T1 and t1 reach defrost condition, and T2 and t2 control the first Room when being not up to defrost condition
External heat exchanger carries out defrost；After the first outdoor heat exchanger starts defrost, T1 is detected, and record the defrost of the first outdoor heat exchanger
Time t1', the second judging unit exits defrost condition for judging whether the T1 and t1' reaches；And in judged result be yes
In the case of, the first outdoor heat exchanger of control exits defrost.
In the technical scheme, when T1 and t1 reach defrost condition, and T2 and t2 are when being not up to defrost condition, illustrate first
Outdoor heat exchanger reaches defrost condition, now controls the first outdoor heat exchanger to carry out defrost, continues to monitor the first outdoor heat exchanger
Temperature T1, and record defrosting time t1', after T1 or t1' reach the condition for exiting defrosting, then control the first outdoor heat exchanger
Defrosting mode is exited, the second outdoor heat exchanger, still in heating mode, is realized during defrosting by the first outdoor heat exchanger
Compressor is not shut down, and indoor set continues the purpose of continuously heating, accelerates defrost speed, so that save the defrost time, together
When avoid the problem of high frequent start and stop during correlation technique defrost, reach saving energy consumption, reduce air-conditioning fault rate
Purpose, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
In any of the above-described technical scheme, it is preferable that when T2 and t2 reach defrost condition, and T1 and t1 are not up to defrost bar
During part, control unit the second outdoor heat exchanger of control carries out defrost；After the second outdoor heat exchanger starts defrost, T2 is detected, and
Record the defrost time t2' of the first outdoor heat exchanger, the second judging unit is additionally operable to judge whether the T2 and t2' reaches to move back
Go out defrost condition；And in the case where the judgment result is yes, control unit controls the second outdoor heat exchanger to exit defrost.
In the technical scheme, when T2 and t2 reach defrost condition, and T1 and t1 are when being not up to defrost condition, illustrate second
Outdoor heat exchanger reaches defrost condition, now controls the second outdoor heat exchanger to carry out defrost, continues to monitor the second outdoor heat exchanger
Temperature T2, and record defrosting time t2', after T2 or t2' reach the condition for exiting defrosting, then control the second outdoor heat exchanger
Defrosting mode is exited, the first outdoor heat exchanger, still in heating mode, is realized during defrosting by the second outdoor heat exchanger
Compressor is not shut down, and indoor set continues the purpose of continuously heating, accelerates defrost speed, so that save the defrost time, together
When avoid the problem of high frequent start and stop during correlation technique defrost, reach saving energy consumption, reduce air-conditioning fault rate
Purpose, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
In any of the above-described technical scheme, it is preferable that the first comparing unit, for being reached as T1 and t1 and T2 and t2 simultaneously
During to defrost condition, T1 and T2 are contrasted；When T1 is less than T2, control unit controls the first outdoor heat exchanger beginning
Frost；When T1 is more than T2, control unit controls the second outdoor heat exchanger to start defrost.
In the technical scheme, when T1 and t1 and T2 and t2 reaches defrost condition simultaneously, the first outdoor heat exchange is illustrated
Device and the second outdoor heat exchanger have all reached defrost condition, in this case, are contrasted by by T1 and T2, according to contrast
The outdoor heat exchanger of output control first or second starts defrost, when T1 is less than T2, illustrates the temperature of the first outdoor heat exchanger
Lower, then the degree of the first outdoor heat exchanger surface frosting is more serious, now, the first outdoor heat exchanger of control starts defrost；
Conversely, the temperature of the second outdoor heat exchanger of explanation is lower, then the degree of the second outdoor heat exchanger surface frosting is more serious, this
When, the second outdoor heat exchanger of control starts defrost；Enable the leading defrost of serious outdoor heat exchanger of frosting degree, it is to avoid
Heating effect is influenceed when frosting is serious, it is ensured that air-conditioner normally runs, effectively improve air conditioner heat-production comfortableness, while also dropping
Low air conditioner fault rate, lifts the reliability of air-conditioner.
In any of the above-described technical scheme, it is preferable that the second comparing unit, when T1 is equal to T2, further by t1 and t2
Contrasted；When t1 is more than t2, control unit controls the first outdoor heat exchanger to start defrost；When t1 is less than t2, control is single
Unit's the second outdoor heat exchanger of control starts defrost.
In the technical scheme, when T1 is identical with T2, by contrasting the first outdoor heat exchanger and the second outdoor heat exchanger
Duration t1 and t2 in heating mode, control the first or second outdoor heat exchanger to start defrost according to comparing result, work as t1
During more than t2, illustrate that the first outdoor heat exchanger heating operation time is longer, easy frosting now controls the first outdoor heat exchanger to open
Beginning defrost；Conversely, the second outdoor heat exchanger heating operation time of explanation is longer, easy frosting now controls the second outdoor heat exchange
Device starts defrost；Enable the leading defrost of serious outdoor heat exchanger of frosting degree, it is to avoid influence is heated when frosting is serious
Effect, it is ensured that air-conditioner normally runs, effectively improves air conditioner heat-production comfortableness, while air conditioner fault rate is also reduced,
Lift the reliability of air-conditioner.
In any of the above-described technical scheme, it is preferable that when t1 be equal to t2 when, control unit according to default preferential defrost sequentially
Control the first outdoor heat exchanger or the second outdoor heat exchanger defrost.
In the technical scheme, when t1 is equal to t2, by the preferential defrost that pre-sets sequentially, control first is outdoor
Heat exchanger or the second outdoor heat exchanger defrost so that during one of outdoor heat exchanger defrost, another outdoor heat exchanger is still located
In heating operations, compressor is not shut down during realizing outdoor heat exchanger defrost, and indoor set continues the mesh of continuously heating
, defrost speed is accelerated, so that the defrost time is saved, while avoiding high frequent start and stop during correlation technique defrost
Problem, reach saving energy consumption, reduce the purpose of air-conditioning fault rate, effectively improve air conditioner heat-production comfortableness, reliability,
Lifting Consumer's Experience.
In any of the above-described technical scheme, it is preferable that defrost when the first outdoor heat exchanger and different the second outdoor heat exchanger.
In the technical scheme, defrost during by the first outdoor heat exchanger and different the second outdoor heat exchanger, it is ensured that its
In an outdoor heat exchanger defrost when, another outdoor heat exchanger realizes outdoor heat exchanger still in heating mode
Compressor is not shut down during frost, and indoor set continues the purpose of continuously heating, defrost speed is accelerated, so that when saving defrost
Between, while avoiding the problem of high frequent start and stop during correlation technique defrost, saving energy consumption is reached, reduce air-conditioning failure
The purpose of rate, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
The present invention also proposes a kind of air-conditioner, and the air-conditioner includes the first outdoor heat exchanger and the second outdoor heat exchanger, bag
Include the control device for not shutting down defrost of any one of above-mentioned technical proposal.
Air-conditioner of the invention, by not shutting down the control device of defrost, realizes outdoor heat exchanger defrost process
Middle compressor is not shut down, and indoor set continues the purpose of continuously heating, accelerates defrost speed, so that the defrost time is saved, together
When avoid the problem of high frequent start and stop during correlation technique defrost, reach saving energy consumption, reduce air-conditioning fault rate
Purpose, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
In the above-mentioned technical solutions, it is preferable that also include：First sensor, is arranged on the first outdoor heat exchanger；With
Two sensors, are arranged on the second outdoor heat exchanger.
In the technical scheme, passed by being respectively provided with first sensor and second on first, second outdoor heat exchanger
Sensor, can detect the temperature of first, second outdoor heat exchanger, so that the order of severity of outdoor heat exchanger frosting is analyzed, to enter
One step judges whether outdoor heat exchanger reaches defrost and exit defrost condition there is provided condition.
Additional aspect of the invention and advantage will become obvious in following description section, or by practice of the invention
Recognize.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 shows the schematic flow sheet of the control method for not shutting down defrost according to an embodiment of the invention；
Fig. 2 shows that the idiographic flow of the control method for not shutting down defrost according to an embodiment of the invention is illustrated
Figure；
Fig. 3 shows the schematic block diagram of the control device for not shutting down defrost according to an embodiment of the invention；
Fig. 4 shows the schematic block diagram of the control device for not shutting down defrost according to another embodiment of the invention
Fig. 5 shows the schematic block diagram of the control device for not shutting down defrost according to still a further embodiment；
Fig. 6 shows the schematic block diagram of the control device for not shutting down defrost according to still another embodiment of the invention；
Fig. 7 shows the schematic block diagram of air-conditioner according to an embodiment of the invention；
Fig. 8 a show air-conditioner according to an embodiment of the invention first outdoor heat exchanger in a heating mode
The whole machine schematic diagram of frost；
Fig. 8 b show air-conditioner according to an embodiment of the invention second outdoor heat exchanger in a heating mode
The whole machine schematic diagram of frost.
Wherein, the corresponding relation in Fig. 8 a to Fig. 8 b between reference and component names is：
802 compressors, 804 first four-way valves, 806 second four-way valves, 808 first outdoor heat exchangers, 810 second outdoors are changed
Hot device, 812 first throttle devices, 814 second throttling devices, 816 indoor heat exchangers, 818 first triple valves, 820 second threeways
Valve, 822 high-pressure air pipes.
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied to be further described in detail the present invention.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
As shown in figure 1, the schematic flow sheet of the control method for not shutting down defrost according to an embodiment of the invention：
Step 102, when air-conditioner is in heating mode, detects the first outdoor heat exchanger and the second outdoor heat exchanger respectively
Temperature T1 and T2；
Step 104, record respectively the first outdoor heat exchanger and the second outdoor heat exchanger be in heating mode duration t1 and
t2；
Step 106, judges whether T1 and t1 and T2 and t2 reach defrost condition respectively；
Step 108, defrost is carried out according to judged result the first outdoor heat exchanger of control or the second outdoor heat exchanger.
In this embodiment, into after heating mode, by the temperature T1 and for detecting the first outdoor heat exchanger respectively
The temperature T2 of two outdoor heat exchangers, meanwhile, the first outdoor heat exchanger is recorded respectively and the second outdoor heat exchanger is in and heats work
Whether the time t1 and t2 of state, so as to monitor the order of severity of its frosting, and judge the first outdoor heat exchanger by T1 and t1
The condition of defrosting is reached, has judged whether the second outdoor heat exchanger has reached the condition of defrosting by T2 and t2, tied according to judgement
Fruit carries out defrost to the first outdoor heat exchanger or the second outdoor heat exchanger, and compressor is not during realizing outdoor heat exchanger defrost
Shut down, indoor set continues the purpose of continuously heating, accelerates defrost speed, so that the defrost time is saved, while avoiding phase
The problem of high frequent start and stop during the technology defrost of pass, reaches saving energy consumption, reduces the purpose of air-conditioning fault rate, effectively
Air conditioner heat-production comfortableness, reliability are improved, Consumer's Experience is lifted.
In the above embodiment, it is preferable that being entered to the first outdoor heat exchanger or the second outdoor heat exchanger according to judged result
Row defrost includes：When T1 and t1 reach defrost condition, and T2 and t2 be when being not up to defrost condition, and the first outdoor heat exchanger of control enters
Row defrost；After first outdoor heat exchanger starts defrost, T1 described in real-time detection, and record first outdoor heat exchanger
Defrost time t1', judge whether the T1 and t1' reaches and exit defrost condition；And in the case where the judgment result is yes, control
Make the first outdoor heat exchanger and exit defrost.
In this embodiment, when T1 and t1 reach defrost condition, and T2 and t2 are when being not up to defrost condition, illustrate the first Room
External heat exchanger reaches defrost condition, now controls the first outdoor heat exchanger to carry out defrost, continues to monitor the first outdoor heat exchanger
Temperature T1, and defrosting time t1' is recorded, after T1 or t1' reach the condition for exiting defrosting, then control the first outdoor heat exchanger to move back
Go out defrosting mode, the second outdoor heat exchanger, still in heating mode, is realized during defrosting by the first outdoor heat exchanger
Compressor is not shut down, and indoor set continues the purpose of continuously heating, accelerates defrost speed, so that the defrost time is saved, while
The problem of high frequent start and stop during correlation technique defrost is avoided, saving energy consumption is reached, the mesh of air-conditioning fault rate is reduced
, air conditioner heat-production comfortableness, reliability are effectively improved, lift Consumer's Experience.
In the above embodiment, it is preferable that when T2 and t2 reaches defrost condition, and T1 and t1 are when being not up to defrost condition,
Controlling the second outdoor heat exchanger carries out defrost；After second outdoor heat exchanger starts defrost, T2 described in real-time detection, and remember
The defrost time t2' of second outdoor heat exchanger is recorded, is judged whether the T2 and t2' reaches and is exited defrost condition；And sentencing
Disconnected result is in the case of being, the second outdoor heat exchanger of control exits defrost.
In this embodiment, when T2 and t2 reach defrost condition, and T1 and t1 are when being not up to defrost condition, illustrate second Room
External heat exchanger reaches defrost condition, now controls the second outdoor heat exchanger to carry out defrost, continues to monitor the second outdoor heat exchanger
Temperature T2, and defrosting time t2' is recorded, after T2 or t2' reach the condition for exiting defrosting, then control the second outdoor heat exchanger to move back
Go out defrosting mode, the first outdoor heat exchanger, still in heating mode, is realized during defrosting by the second outdoor heat exchanger
Compressor is not shut down, and indoor set continues the purpose of continuously heating, accelerates defrost speed, so that the defrost time is saved, while
The problem of high frequent start and stop during correlation technique defrost is avoided, saving energy consumption is reached, the mesh of air-conditioning fault rate is reduced
, air conditioner heat-production comfortableness, reliability are effectively improved, lift Consumer's Experience.
In the above embodiment, it is preferable that when T1 and t1 and T2 and t2 reaches defrost condition simultaneously, T1 and T2 are entered
Row contrast；When T1 is less than T2, the first outdoor heat exchanger of control starts defrost；When T1 is more than T2, the second outdoor heat exchange is controlled
Device starts defrost.
In this embodiment, when T1 and t1 and T2 and t2 reaches defrost condition simultaneously, the first outdoor heat exchanger is illustrated
Defrost condition is all reached with the second outdoor heat exchanger, in this case, has been contrasted by by T1 and T2, tied according to contrast
Fruit the first or second outdoor heat exchanger of control starts defrost, when T1 is less than T2, illustrates the temperature of the first outdoor heat exchanger more
Low, then the degree of the first outdoor heat exchanger surface frosting is more serious, now, the first outdoor heat exchanger of control starts defrost；Instead
It, illustrates that the temperature of the second outdoor heat exchanger is lower, then the degree of the second outdoor heat exchanger surface frosting is more serious, now,
The second outdoor heat exchanger is controlled to start defrost；Enable the leading defrost of serious outdoor heat exchanger of frosting degree, it is to avoid finish
Heating effect is influenceed when white serious, it is ensured that air-conditioner normally runs, and effectively improves air conditioner heat-production comfortableness, while also reducing
Air conditioner fault rate, lifts the reliability of air-conditioner.
In the above embodiment, it is preferable that when T1 is equal to T2, further t1 and t2 are contrasted；When t1 is more than t2
When, the first outdoor heat exchanger of control starts defrost；When t1 is less than t2, the second outdoor heat exchanger of control starts defrost.
In this embodiment, when T1 is identical with T2, by contrasting at the first outdoor heat exchanger and the second outdoor heat exchanger
In the duration t1 and t2 of heating mode, the first or second outdoor heat exchanger is controlled to start defrost according to comparing result, when t1 is big
When t2, illustrate that the first outdoor heat exchanger heating operation time is longer, easy frosting now controls the first outdoor heat exchanger to start
Defrost；Conversely, the second outdoor heat exchanger heating operation time of explanation is longer, easy frosting now controls the second outdoor heat exchanger
Start defrost；Enable the leading defrost of serious outdoor heat exchanger of frosting degree, it is to avoid influence heats effect when frosting is serious
Really, it is ensured that air-conditioner normally runs, air conditioner heat-production comfortableness is effectively improved, while also reducing air conditioner fault rate, is carried
Rise the reliability of air-conditioner.
In the above embodiment, it is preferable that when t1 is equal to t2, being changed according to the default preferential outdoor of defrost sequential control first
Hot device or the second outdoor heat exchanger defrost.
In this embodiment, when t1 is equal to t2, by the preferential defrost that pre-sets sequentially, the first outdoor of control is changed
Hot device or the second outdoor heat exchanger defrost so that during one of outdoor heat exchanger defrost, another outdoor heat exchanger still in
In heating operations, compressor is not shut down during realizing outdoor heat exchanger defrost, and indoor set continues the purpose of continuously heating,
Defrost speed is accelerated, so that the defrost time is saved, while avoiding high frequent start and stop during correlation technique defrost
Problem, reaches saving energy consumption, reduces the purpose of air-conditioning fault rate, effectively improves air conditioner heat-production comfortableness, reliability, carries
Rise Consumer's Experience.
In any of the above-described embodiment, it is preferable that defrost when the first outdoor heat exchanger and different the second outdoor heat exchanger.
Defrost when in this embodiment, by the first outdoor heat exchanger and different the second outdoor heat exchanger, it is ensured that wherein
During one outdoor heat exchanger defrost, another outdoor heat exchanger realizes outdoor heat exchanger defrost still in heating mode
During compressor do not shut down, indoor set continue continuously heating purpose, defrost speed is accelerated, so that when saving defrost
Between, while avoiding the problem of high frequent start and stop during correlation technique defrost, saving energy consumption is reached, reduce air-conditioning failure
The purpose of rate, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
As shown in Fig. 2 the idiographic flow of the control method for not shutting down defrost according to an embodiment of the invention is illustrated
Figure：
Step 202, under heating mode, the temperature T1 and T2 of the first outdoor heat exchanger of detection and the second outdoor heat exchanger, and
Duration t1 and t2 in heating mode；
Step 204, judges whether T1 and t1 and T2 and t2 reach defrost condition；
Step 206, defrost is carried out according to judged result the first outdoor heat exchanger of control or the second outdoor heat exchanger；
Step 208, when T1 and t1 reach defrost condition, and T2 and t2 be when being not up to defrost condition, and the first outdoor of control is changed
Hot device carries out defrost；
Step 210, judges whether T1 and t1' reaches and exits defrost condition；If so, performing step 212, otherwise, step is returned to
Rapid 208；
Step 212, exiting the first outdoor heat exchanger carries out defrost；
Step 214, when T2 and t2 reach defrost condition, and T1 and t1 be when being not up to defrost condition, and the second outdoor of control is changed
Hot device carries out defrost；
Step 216, judges whether T2 and t2' reaches and exits defrost condition；If so, performing step 218, otherwise, step is returned to
Rapid 214；
Step 218, exiting the second outdoor heat exchanger carries out defrost；
Step 220, when T1 and t1 and T2 and t2 reaches defrost condition simultaneously, T1 and T2 is contrasted；
Whether step 222, judge T1 less than T2, if so, performing step 208, otherwise, performs step 224；
Whether step 224, judge T2 less than T1, if so, performing step 214, otherwise, performs step 226；
Whether step 226, judge t1 more than t2, if so, performing step 208, otherwise, performs step 228；
Whether step 228, judge t2 more than t1, if so, performing step 214, otherwise, performs step 230；
Step 230, according to the default outdoor heat exchanger of defrost sequential control first or the second outdoor heat exchanger defrost.
In this embodiment, when air-conditioner is in heating mode, by the temperature T for detecting the first outdoor heat exchanger respectively1
With the temperature T2 of the second outdoor heat exchanger, meanwhile, the first outdoor heat exchanger and the second outdoor heat exchanger recorded respectively be in and heat
The time t1 and t2 of working condition, so as to monitor the order of severity of its frosting, and judge the first outdoor heat exchanger by T1 and t1
Whether the condition of defrosting is reached, has judged whether the second outdoor heat exchanger has reached the condition of defrosting by T2 and t2, according to sentencing
Disconnected result carries out defrost in turn to the first outdoor heat exchanger and the second outdoor heat exchanger so that one of outdoor heat exchanger defrost
When, another outdoor heat exchanger still in heating mode, do not shut down during realizing outdoor heat exchanger defrost by compressor, indoor
Machine continues the purpose of continuously heating, accelerates defrost speed, so that the defrost time is saved, while avoiding correlation technique defrost
During high frequent start and stop problem, reach saving energy consumption, reduce the purpose of air-conditioning fault rate, effectively improve air-conditioning
Device heats comfortableness, reliability, lifts Consumer's Experience.
As shown in figure 3, the schematic block diagram of the control device for not shutting down defrost according to an embodiment of the invention：
Detection unit 302, for when air-conditioner is in heating mode, the first outdoor heat exchanger and second Room being detected respectively
The temperature T1 and T2 of external heat exchanger；
Recording unit 304, heating mode is in for recording the first outdoor heat exchanger and the second outdoor heat exchanger respectively
Duration t1 and t2；
First judging unit 306, for judging whether T1 and t1 and T2 and t2 reach defrost condition respectively；
Control unit 308, for controlling the first outdoor heat exchanger or the second outdoor heat exchanger according to judged result
Frost.
The control device for not shutting down defrost of the invention, into after heating mode, by detecting the first Room respectively
The temperature T1 of the external heat exchanger and temperature T2 of the second outdoor heat exchanger, meanwhile, the first outdoor heat exchanger and second Room are recorded respectively
External heat exchanger is in the time t1 and t2 for heating working condition, so as to monitor the order of severity of its frosting, and is sentenced by T1 and t1
Whether disconnected first outdoor heat exchanger has reached the condition of defrosting, judges whether the second outdoor heat exchanger has reached by T2 and t2 and removes
The condition of frost, defrost is carried out according to judged result to the first outdoor heat exchanger or the second outdoor heat exchanger, realizes outdoor heat exchange
Compressor is not shut down during device defrost, and indoor set continues the purpose of continuously heating, defrost speed is accelerated, so that saving
The white time, while avoiding the problem of high frequent start and stop during correlation technique defrost, saving energy consumption is reached, reduce air-conditioning
The purpose of fault rate, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
As shown in figure 4, the schematic block diagram of the control device for not shutting down defrost according to another embodiment of the invention：
Detection unit 402, for when air-conditioner is in heating mode, the first outdoor heat exchanger and second Room being detected respectively
The temperature T1 and T2 of external heat exchanger；
Recording unit 404, heating mode is in for recording the first outdoor heat exchanger and the second outdoor heat exchanger respectively
Duration t1 and t2；It is additionally operable to record the first outdoor heat exchanger defrosting time t1'；
First judging unit 406, for judging whether T1 and t1 and T2 and t2 reach defrost condition respectively；
Control unit 408, for controlling the first outdoor heat exchanger or the second outdoor heat exchanger according to judged result
Frost；
Second judging unit 410, defrost condition is exited for judging whether the T1 and t1' reaches.
In this embodiment, when T1 and t1 reach defrost condition, and T2 and t2 are when being not up to defrost condition, illustrate the first Room
External heat exchanger reaches defrost condition, now controls the first outdoor heat exchanger to carry out defrost, and detection unit 402 continues to monitor the first Room
The temperature T1 of external heat exchanger, the record defrosting time t1' of recording unit 404, after T1 or t1' reach the condition for exiting defrosting, control
Make the first outdoor heat exchanger and exit defrosting mode, by the first outdoor heat exchanger during defrosting, the second outdoor heat exchanger is still
In heating mode, realize compressor and do not shut down, indoor set continues the purpose of continuously heating, accelerates defrost speed, from
And the defrost time is saved, while avoiding the problem of high frequent start and stop during correlation technique defrost, saving energy consumption is reached,
The purpose of air-conditioning fault rate is reduced, air conditioner heat-production comfortableness, reliability is effectively improved, Consumer's Experience is lifted.
In the above embodiment, it is preferable that when T2 and t2 reaches defrost condition, and T1 and t1 are when being not up to defrost condition,
Control unit the second outdoor heat exchanger of control carries out defrost；After the second outdoor heat exchanger starts defrost, T2 is detected, and record the
The defrost time t2' of one outdoor heat exchanger, the second judging unit is additionally operable to judge whether T2 and t2' reaches to exit defrost condition；
And in the case where the judgment result is yes, control unit controls the second outdoor heat exchanger to exit defrost.
In this embodiment, when T2 and t2 reach defrost condition, and T1 and t1 are when being not up to defrost condition, illustrate second Room
External heat exchanger reaches defrost condition, now controls the second outdoor heat exchanger to carry out defrost, and detection unit 402 continues to monitor second Room
The temperature T2 of external heat exchanger, the record defrosting time t2' of recording unit 404, after T2 or t2' reach the condition for exiting defrosting, control
Make the second outdoor heat exchanger and exit defrosting mode, by the second outdoor heat exchanger during defrosting, the first outdoor heat exchanger is still
In heating mode, realize compressor and do not shut down, indoor set continues the purpose of continuously heating, accelerates defrost speed, from
And the defrost time is saved, while avoiding the problem of high frequent start and stop during correlation technique defrost, saving energy consumption is reached,
The purpose of air-conditioning fault rate is reduced, air conditioner heat-production comfortableness, reliability is effectively improved, Consumer's Experience is lifted.
As shown in figure 5, the schematic block diagram of the control device for not shutting down defrost according to another embodiment of the invention：
Detection unit 502, for when air-conditioner is in heating mode, the first outdoor heat exchanger and second Room being detected respectively
The temperature T1 and T2 of external heat exchanger；
Recording unit 504, heating mode is in for recording the first outdoor heat exchanger and the second outdoor heat exchanger respectively
Duration t1 and t2；It is additionally operable to record the first outdoor heat exchanger defrosting time t1' and the second outdoor heat exchanger defrosting time t2'；
First judging unit 506, for judging whether T1 and t1 and T2 and t2 reach defrost condition respectively；
Control unit 508, for controlling the first outdoor heat exchanger or the second outdoor heat exchanger according to judged result
Frost；
Second judging unit 510, defrost condition is exited for judging whether the T1 and t1' reaches；It is additionally operable to judge institute
State T2 and t2' and whether reach and exit defrost condition；
First comparing unit 512, for when T1 and t1 and T2 and t2 reaches defrost condition simultaneously, T1 and T2 being carried out
Contrast, when T1 is less than T2, control unit controls the first outdoor heat exchanger to start defrost；When T1 is more than T2, control unit control
Make the second outdoor heat exchanger and start defrost.
In this embodiment, when T1 and t1 and T2 and t2 reaches defrost condition simultaneously, the first outdoor heat exchanger is illustrated
Defrost condition is all reached with the second outdoor heat exchanger, in this case, has been contrasted by by T1 and T2, tied according to contrast
Fruit the first or second outdoor heat exchanger of control starts defrost, when T1 is less than T2, illustrates the temperature of the first outdoor heat exchanger more
Low, then the degree of the first outdoor heat exchanger surface frosting is more serious, now, the first outdoor heat exchanger of control starts defrost；Instead
It, illustrates that the temperature of the second outdoor heat exchanger is lower, then the degree of the second outdoor heat exchanger surface frosting is more serious, now,
The second outdoor heat exchanger is controlled to start defrost；Enable the leading defrost of serious outdoor heat exchanger of frosting degree, it is to avoid finish
Heating effect is influenceed when white serious, it is ensured that air-conditioner normally runs, and effectively improves air conditioner heat-production comfortableness, while also reducing
Air conditioner fault rate, lifts the reliability of air-conditioner.
As shown in fig. 6, the schematic block diagram of the control device for not shutting down defrost according to another embodiment of the invention：
Detection unit 602, for when air-conditioner is in heating mode, the first outdoor heat exchanger and second Room being detected respectively
The temperature T1 and T2 of external heat exchanger；
Recording unit 604, heating mode is in for recording the first outdoor heat exchanger and the second outdoor heat exchanger respectively
Duration t1 and t2；It is additionally operable to record the first outdoor heat exchanger defrosting time t1' and the second outdoor heat exchanger defrosting time t2'；
First judging unit 606, for judging whether T1 and t1 and T2 and t2 reach defrost condition respectively；
Control unit 608, for controlling the first outdoor heat exchanger or the second outdoor heat exchanger according to judged result
Frost；
Second judging unit 610, defrost condition is exited for judging whether the T1 and t1' reaches；It is additionally operable to judge institute
State T2 and t2' and whether reach and exit defrost condition；
First comparing unit 612, for when T1 and t1 and T2 and t2 reaches defrost condition simultaneously, T1 and T2 being carried out
Contrast, when T1 is less than T2, control unit controls the first outdoor heat exchanger to start defrost；When T1 is more than T2, control unit control
Make the second outdoor heat exchanger and start defrost；
Second comparing unit 614, for when T1 is equal to T2, further being contrasted t1 and t2；When t1 is more than t2,
Control unit controls the first outdoor heat exchanger to start defrost；When t1 is less than t2, control unit controls the second outdoor heat exchanger to open
Beginning defrost.
In this embodiment, when T1 is identical with T2, by contrasting at the first outdoor heat exchanger and the second outdoor heat exchanger
In the duration t1 and t2 of heating mode, the first or second outdoor heat exchanger is controlled to start defrost according to comparing result, when t1 is big
When t2, illustrate that the first outdoor heat exchanger heating operation time is longer, easy frosting now controls the first outdoor heat exchanger to start
Defrost；Conversely, the second outdoor heat exchanger heating operation time of explanation is longer, easy frosting now controls the second outdoor heat exchanger
Start defrost；Enable the leading defrost of serious outdoor heat exchanger of frosting degree, it is to avoid influence heats effect when frosting is serious
Really, it is ensured that air-conditioner normally runs, air conditioner heat-production comfortableness is effectively improved, while also reducing air conditioner fault rate, is carried
Rise the reliability of air-conditioner.
In the above embodiment, it is preferable that when t1 is equal to t2, control unit is according to default preferential defrost sequential control the
One outdoor heat exchanger or the second outdoor heat exchanger defrost.
In this embodiment, when t1 is equal to t2, by the preferential defrost that pre-sets sequentially, the first outdoor of control is changed
Hot device or the second outdoor heat exchanger defrost so that during one of outdoor heat exchanger defrost, another outdoor heat exchanger still in
In heating operations, compressor is not shut down during realizing outdoor heat exchanger defrost, and indoor set continues the purpose of continuously heating,
Defrost speed is accelerated, so that the defrost time is saved, while avoiding high frequent start and stop during correlation technique defrost
Problem, reaches saving energy consumption, reduces the purpose of air-conditioning fault rate, effectively improves air conditioner heat-production comfortableness, reliability, carries
Rise Consumer's Experience.
In any of the above-described embodiment, it is preferable that defrost when the first outdoor heat exchanger and different the second outdoor heat exchanger.
Defrost when in this embodiment, by the first outdoor heat exchanger and different the second outdoor heat exchanger, it is ensured that wherein
During one outdoor heat exchanger defrost, another outdoor heat exchanger realizes outdoor heat exchanger defrost still in heating mode
During compressor do not shut down, indoor set continue continuously heating purpose, defrost speed is accelerated, so that when saving defrost
Between, while avoiding the problem of high frequent start and stop during correlation technique defrost, saving energy consumption is reached, reduce air-conditioning failure
The purpose of rate, effectively improves air conditioner heat-production comfortableness, reliability, lifts Consumer's Experience.
As shown in fig. 7, the schematic block diagram of air-conditioner according to an embodiment of the invention：Including any of the above-described embodiment
The control device 702 for not shutting down defrost.By not shutting down the control device 702 of defrost, outdoor heat exchanger defrost is realized
Compressor is not shut down in journey, and indoor set continues the purpose of continuously heating, accelerates defrost speed, so that the defrost time is saved,
While avoiding the problem of high frequent start and stop during correlation technique defrost, saving energy consumption is reached, reduce air-conditioning fault rate
Purpose, effectively improve air conditioner heat-production comfortableness, reliability, lift Consumer's Experience.
In the above embodiment, it is preferable that also including：First sensor, is arranged on the first outdoor heat exchanger；With second
Sensor, is arranged on the second outdoor heat exchanger.
In this embodiment, by being respectively provided with first sensor and the second sensing on first, second outdoor heat exchanger
Device, can detect the temperature of first, second outdoor heat exchanger, so that the order of severity of outdoor heat exchanger frosting is analyzed, to enter one
Step judges whether outdoor heat exchanger reaches defrost and exit defrost condition there is provided condition.
Specific embodiment, reference picture 8a to Fig. 8 b descriptions, heat pump (air-conditioning) of the invention mainly includes：Compressor
802nd, the first four-way valve 804, the second four-way valve 806, the first triple valve 818, the second triple valve 820, the first outdoor heat exchanger
808th, the second outdoor heat exchanger 810, first throttle device 812, second throttling device 814, indoor heat exchanger 816, the first sensing
(position of according to actual needs, layouting can be with the first outdoor heat exchanger 808 for device, second sensor, wherein first sensor cloth
It is the positions such as import, centre, the outlet of the first outdoor heat exchanger), second sensor cloth (root on the second outdoor heat exchanger 810
According to being actually needed, position of layouting can be the positions such as import, centre, the outlet of the second outdoor heat exchanger.It is, of course, also possible to including
Other parts, these parts and application thereof and installation settings are no longer detailed herein known to the technical staff of air-conditioner system
Explanation.
When the first outdoor heat exchanger 808 reaches defrosting condition, and the second outdoor heat exchanger 810 not up to defrosting condition when：
Under this kind of state, then first the first outdoor heat exchanger 808 is defrosted, the first outdoor heat exchanger 808 is not held during defrosting
The defrosting instruction of the second outdoor heat exchanger of row 810.Its action sequence is：It is connected to " being defrosted to the first outdoor heat exchanger 808 "
Instruction after, the first triple valve 818 first commutates (be switched to the state turned on the E pipes of the second four-way valve 806), then the 1st
Port valve 804 commutates (be switched to the state that the outdoor heat exchanger 808 of high-pressure air pipe 822 and first is turned on), and it is " right to be so achieved that
First outdoor heat exchanger 808 is defrosted ", as shown in Figure 8 a.During defrosting, first sensor monitors the first outdoor heat exchanger
808 temperature T1, primary control program record defrosting time t1', after T1 or t1' reach the condition for exiting defrosting, then performs " first
Outdoor heat exchanger 808 exits defrosting " instruction, specific action sequence is：First four-way valve 804 first commutates and (is switched to a high pressure
The state of the conducting of 822 and first triple valve of tracheae 818), then the first triple valve 818 commutates and (is switched to and the first four-way valve 804
E pipes conducting state), thus exited the defrosting state of the first outdoor heat exchanger 808.
When the second outdoor heat exchanger 810 reaches defrosting condition, and the first outdoor heat exchanger 808 not up to defrosting condition when：
Under this kind of state, then first the second outdoor heat exchanger 810 is defrosted, the second outdoor heat exchanger 810 is not held during defrosting
The defrosting instruction of the first outdoor heat exchanger of row 808.Its action sequence is：It is connected to " being defrosted to the second outdoor heat exchanger 810 "
Instruction after, the second triple valve 820 first commutates (be switched to the state turned on the E pipes of the first four-way valve 804), then the 2nd 4
Port valve 806 commutates (be switched to the state that the outdoor heat exchanger 810 of high-pressure air pipe 822 and second is turned on), and it is " right to be so achieved that
Second outdoor heat exchanger 810 is defrosted ", as shown in Figure 8 b.During defrosting, second sensor monitors the second outdoor heat exchanger
810 temperature T2, primary control program record defrosting time t2', after T2 or t2' reach the condition for exiting defrosting, then performs " second
Outdoor heat exchanger 810 exits defrosting " instruction, specific action sequence is：Second four-way valve 806 first commutates and (is switched to a high pressure
The state of the conducting of 822 and second triple valve of tracheae 820), then the second triple valve 820 commutates and (is switched to and the second four-way valve 806
E pipes conducting state), thus exited the defrosting state of the second outdoor heat exchanger 810.
When the first outdoor heat exchanger 808 and the second outdoor heat exchanger 810 reach defrosting condition simultaneously, under this kind of state,
Then first T1, T2 are contrasted：
If T1<T2, then first defrost to the first outdoor heat exchanger 808, and the first outdoor heat exchanger 808 completes to defrost and move back
After out, then the second outdoor heat exchanger 810 is defrosted；
If T2<T1, then first defrost to the second outdoor heat exchanger 810, and the second outdoor heat exchanger 810 completes to defrost and move back
After out, then the first outdoor heat exchanger 808 is defrosted；
If T1=T2, t1 and t2 are contrasted：Work as t1>During t2, then first the first outdoor heat exchanger 808 is removed
Frost, after the first outdoor heat exchanger 808 completes to defrost and withdraw, then defrosts to the second outdoor heat exchanger 810；Work as t2>t1
When, then first the second outdoor heat exchanger 810 is defrosted, after the second outdoor heat exchanger 810 completes to defrost and withdraw, then to the
One outdoor heat exchanger 808 is defrosted.
If T1=T2, and t1=t2, then in primary control program the defrosting of preassignment one priority.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (16)
1. a kind of control method for not shutting down defrost, for air-conditioner, the air-conditioner includes the first outdoor heat exchanger and second
Outdoor heat exchanger, it is characterised in that the control method for not shutting down defrost includes：
When the air-conditioner is in heating mode, first outdoor heat exchanger and second outdoor heat exchanger are detected respectively
Temperature T1 and T2；
Record respectively first outdoor heat exchanger and second outdoor heat exchanger be in the heating mode duration t1 and
t2；
Judge whether the T1 and t1 and the T2 and t2 reach defrost condition respectively；
Defrost is carried out according to judged result control first outdoor heat exchanger or second outdoor heat exchanger.
2. the control method for not shutting down defrost according to claim 1, it is characterised in that it is described according to judged result to institute
Stating the first outdoor heat exchanger or second outdoor heat exchanger carries out defrost and includes：
When the T1 and t1 reach defrost condition, and the T2 and t2 control first outdoor to change when being not up to defrost condition
Hot device carries out defrost；
After first outdoor heat exchanger starts defrost, the T1 is detected, and record the defrost of first outdoor heat exchanger
Time t1', judges whether the T1 and t1' reaches and exits defrost condition；
And in the case where the judgment result is yes, control first outdoor heat exchanger to exit defrost.
3. the control method for not shutting down defrost according to claim 1, it is characterised in that
When the T2 and t2 reach defrost condition, and the T1 and t1 control second outdoor to change when being not up to defrost condition
Hot device carries out defrost；
After second outdoor heat exchanger starts defrost, the T2 is detected, and record the defrost of second outdoor heat exchanger
Time t2', judges whether the T2 and t2' reaches and exits defrost condition；
And in the case where the judgment result is yes, control second outdoor heat exchanger to exit defrost.
4. the control method for not shutting down defrost according to claim 1, it is characterised in that
When the T1 and t1 and T2 and t2 reaches defrost condition simultaneously, the T1 and the T2 are contrasted；
When the T1 is less than the T2, first outdoor heat exchanger is controlled to start defrost；
When the T1 is more than the T2, second outdoor heat exchanger is controlled to start defrost.
5. the control method for not shutting down defrost according to claim 4, it is characterised in that
When the T1 is equal to the T2, further the t1 and the t2 are contrasted；
When the t1 is more than the t2, first outdoor heat exchanger is controlled to start defrost；
When the t1 is less than the t2, second outdoor heat exchanger is controlled to start defrost.
6. the control method for not shutting down defrost according to claim 5, it is characterised in that
When the t1 is equal to the t2, according to the first outdoor heat exchanger or described second described in default preferential defrost sequential control
Outdoor heat exchanger defrost.
7. the control method for not shutting down defrost according to any one of claim 1 to 6, it is characterised in that
Defrost when first outdoor heat exchanger is different with second outdoor heat exchanger.
8. a kind of control device for not shutting down defrost, for air-conditioner, the air-conditioner includes the first outdoor heat exchanger and second
Outdoor heat exchanger, it is characterised in that the control device for not shutting down defrost includes：
Detection unit, for when the air-conditioner is in heating mode, first outdoor heat exchanger and described being detected respectively
The temperature T1 and T2 of the second outdoor heat exchanger；
Recording unit, mould is heated for recording first outdoor heat exchanger and second outdoor heat exchanger respectively in described
The duration t1 and t2 of formula；
First judging unit, for judging whether the T1 and t1 and the T2 and t2 reach defrost condition respectively；
Control unit, for controlling first outdoor heat exchanger or second outdoor heat exchanger according to judged result
Frost.
9. the control device for not shutting down defrost according to claim 8, it is characterised in that described control unit is according to judgement
Result carries out defrost to first outdoor heat exchanger or second outdoor heat exchanger to be included：When the T1 and t1 reach defrost
Condition, and the T2 and t2 control first outdoor heat exchanger to carry out defrost when being not up to defrost condition；
Second judging unit, for after first outdoor heat exchanger starts defrost, detecting the T1, and record described first
The defrost time t1' of outdoor heat exchanger, judges whether the T1 and t1' reaches and exits defrost condition；
And in the case where the judgment result is yes, control first outdoor heat exchanger to exit defrost.
10. the control device for not shutting down defrost according to claim 8, it is characterised in that
When the T2 and t2 reach defrost condition, and the T1 and t1 be when being not up to defrost condition, described control unit control institute
Stating the second outdoor heat exchanger carries out defrost；
Second judging unit, for after second outdoor heat exchanger starts defrost, detecting the T2, and records described
The defrost time t2' of the second outdoor heat exchanger, judges whether the T2 and t2' reaches and exits defrost condition；
And in the case where the judgment result is yes, described control unit controls second outdoor heat exchanger to exit defrost.
11. control devices for not shutting down defrost according to claim 8, it is characterised in that
First comparing unit, when the T1 and t1 and T2 and t2 reaches defrost condition simultaneously, by the T1 and described
T2 is contrasted；
When the T1 is less than the T2, described control unit controls first outdoor heat exchanger to start defrost；
When the T1 is more than the T2, described control unit controls second outdoor heat exchanger to start defrost.
12. control devices for not shutting down defrost according to claim 11, it is characterised in that
Second comparing unit, when the T1 is equal to the T2, is further contrasted the t1 and the t2；
When the t1 is more than the t2, described control unit controls first outdoor heat exchanger to start defrost；
When the t1 is less than the t2, described control unit controls second outdoor heat exchanger to start defrost.
13. control devices for not shutting down defrost according to claim 12, it is characterised in that
When the t1 is equal to the t2, described control unit is according to the first outdoor heat exchange described in default preferential defrost sequential control
Device or the second outdoor heat exchanger defrost.
14. control device for not shutting down defrost according to any one of claim 8 to 13, it is characterised in that
Defrost when first outdoor heat exchanger is different with second outdoor heat exchanger.
A kind of 15. air-conditioners, the air-conditioner includes the first outdoor heat exchanger and the second outdoor heat exchanger, it is characterised in that bag
Include the control device for not shutting down defrost as any one of claim 8 to 14.
16. air-conditioners according to claim 15, it is characterised in that also include：
First sensor, is arranged on first outdoor heat exchanger；With
Second sensor, is arranged on second outdoor heat exchanger.
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| CN201710065351.4A CN106839312A (en) | 2017-02-06 | 2017-02-06 | The control method and control device and air-conditioner of defrost are not shut down |
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| CN201710065351.4A CN106839312A (en) | 2017-02-06 | 2017-02-06 | The control method and control device and air-conditioner of defrost are not shut down |
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| CN108954677A (en) * | 2018-07-23 | 2018-12-07 | 广东美的暖通设备有限公司 | Defrosting control method, defrosting control system and the storage medium of multi-line system |
| CN110195921A (en) * | 2019-06-06 | 2019-09-03 | 珠海格力电器股份有限公司 | Defrosting control method and device capable of continuously heating, air conditioning unit and equipment |
| WO2023071153A1 (en) * | 2021-10-28 | 2023-05-04 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner, and air conditioner control apparatus and air conditioner |
| WO2023071151A1 (en) * | 2021-10-28 | 2023-05-04 | 青岛海尔空调器有限总公司 | Air conditioning defrost control method, control device and air conditioner |
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| CN108954677A (en) * | 2018-07-23 | 2018-12-07 | 广东美的暖通设备有限公司 | Defrosting control method, defrosting control system and the storage medium of multi-line system |
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| WO2023071153A1 (en) * | 2021-10-28 | 2023-05-04 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner, and air conditioner control apparatus and air conditioner |
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