CN106871382A - Air conditioner without shutting Defrost operation method - Google Patents
Air conditioner without shutting Defrost operation method Download PDFInfo
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- CN106871382A CN106871382A CN201710214514.0A CN201710214514A CN106871382A CN 106871382 A CN106871382 A CN 106871382A CN 201710214514 A CN201710214514 A CN 201710214514A CN 106871382 A CN106871382 A CN 106871382A
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- Prior art keywords
- heat exchanger
- outdoor heat
- control
- control valve
- valve
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
Abstract
The invention discloses a kind of air conditioner without shutting Defrost operation method.Air conditioner without shutting operation Defrost method includes：Control air-conditioning heating operation；Detection outdoor coil temperature；The working condition of outdoor heat exchanger is adjusted according to outdoor coil temperature；When outdoor heat exchanger is adjusted to pre-conditioned, the temperature deviation between detection indoor temperature and design temperature；The working condition of outdoor heat exchanger is adjusted according to temperature deviation so that the operation heat absorption of one of the first outdoor heat exchanger and the second outdoor heat exchanger, another operation heat release defrost.According to above-mentioned technical proposal, air conditioner without shutting Defrost operation can be made, improve comfort of air conditioner.
Description
Technical field
The present invention relates to air-conditioning technique field, in particular to a kind of air conditioner without shutting Defrost operation method.
Background technology
Existing air-conditioning is possible to the situation of frosting occur during heating operation, and frosting is reached after certain degree just
Need to carry out defrost, otherwise heating effect worse and worse, but existing air-conditioning indoor heating during defrosting stops, or even
Can decline indoor temperature, i.e., uncomfortable also not energy-conservation.
The content of the invention
The purpose of the present invention is to propose to a kind of air conditioner without shutting Defrost operation method, air conditioner without shutting can be made to defrost
Operation, improves comfort of air conditioner.
According to an aspect of the invention, there is provided a kind of air conditioner without shutting operation Defrost method, including：Control air-conditioning
Heating operation；Detection outdoor coil temperature；The working condition of outdoor heat exchanger is adjusted according to outdoor coil temperature；Work as room
When external heat exchanger is adjusted to pre-conditioned, the temperature deviation between detection indoor temperature and design temperature；According to temperature deviation pair
The working condition of outdoor heat exchanger is adjusted so that the operation of one of the first outdoor heat exchanger and the second outdoor heat exchanger is inhaled
Heat, another operation heat release defrost.
Preferably, the step of being adjusted to the working condition of outdoor heat exchanger according to outdoor coil temperature includes：Work as b<a
<T1 or b<T1<During a, control first controls valve, the 4th control valve, the 5th control valve, the 7th control valve to open, control second
Control valve, the 3rd control valve and the 6th control valve are closed, control the first outdoor heat exchanger heat absorption, the second outdoor heat exchanger heat release
Frost, wherein a are the coil temperature of the first outdoor heat exchanger, and b is the coil temperature of the second outdoor heat exchanger, and T1 is design temperature.
Preferably, it is pre-conditioned including：The coil temperature of the second outdoor heat exchanger is more than T2 and is continued above time t1.
Preferably, the step of being adjusted to the working condition of outdoor heat exchanger according to temperature deviation includes：
As temperature deviation pn≤T3, control second controls valve, the 3rd control valve, the 5th control valve and the 7th control valve to beat
Open, control first controls valve, the 4th control valve, the 6th control valve to close, and controls the first outdoor heat exchanger heat release defrost, second Room
External heat exchanger absorbs heat.
Preferably, the step of being adjusted to the working condition of outdoor heat exchanger according to temperature deviation also includes：Work as temperature
During deviation pn ＞ T3, the second outdoor heat exchanger stops defrost operation, and the first outdoor heat exchanger of control and the second outdoor heat exchanger are same
When absorb heat and continue the t2 times；Control second controls valve, the 3rd control valve, the 5th control valve and the 7th control valve to open, control
First control valve, the 4th control valve, the 6th control valve are closed, and control the first outdoor heat exchanger heat release defrost, the second outdoor heat exchange
Device absorbs heat.
Preferably, the step of being adjusted to the working condition of outdoor heat exchanger according to temperature deviation also includes：Detection the
The coil temperature of one outdoor heat exchanger；When the first outdoor heat exchanger coil temperature more than T4 and duration more than t3 when, control
Make the 3rd control valve, the 5th control valve and the 6th control valve to open, control first controls valve, the second control valve, the 4th control valve
Closed with the 7th control valve, the first outdoor heat exchanger of control and the second outdoor heat exchanger absorb heat.
Preferably, the step of being adjusted to the working condition of outdoor heat exchanger according to outdoor coil temperature includes：When not
Meet b<a<T1 or b<T1<During a, control second controls valve, the 3rd control valve, the 5th control valve and the 7th control valve to open,
Control first controls valve, the 4th control valve, the 6th control valve to close, and controls the first outdoor heat exchanger heat release defrost, and second is outdoor
Heat exchanger absorbs heat, and wherein a is the coil temperature of the first outdoor heat exchanger, and b is the coil temperature of the second outdoor heat exchanger, and T1 is to set
Constant temperature degree.
Preferably, it is pre-conditioned including：The coil temperature of the first outdoor heat exchanger is more than T5 and is continued above time t4.
Preferably, the step of being adjusted to the working condition of outdoor heat exchanger according to temperature deviation also includes：Work as temperature
During deviation pn≤T6, control first controls valve, the 4th control valve, the 5th control valve, the 7th control valve to open, and control second is controlled
Valve, the 3rd control valve and the 6th control valve are closed, control the first outdoor heat exchanger heat absorption, the second outdoor heat exchanger heat release defrost.
Preferably, the step of being adjusted to the working condition of outdoor heat exchanger according to temperature deviation also includes：Work as temperature
During deviation pn ＞ T6, the first outdoor heat exchanger stops defrost operation, and the first outdoor heat exchanger of control and the second outdoor heat exchanger are same
When absorb heat and continue the t5 times；Control first controls valve, the 4th control valve, the 5th control valve, the 7th control valve to open, control the
Two control valves, the 3rd control valve and the 6th control valve are closed, control the first outdoor heat exchanger heat absorption, the second outdoor heat exchanger heat release
Defrost.
Preferably, the step of being adjusted to the working condition of outdoor heat exchanger according to temperature deviation also includes：Detection the
The coil temperature of two outdoor heat exchangers；When the second outdoor heat exchanger coil temperature more than T7 and duration more than t6 when, control
Make the 3rd control valve, the 5th control valve and the 6th control valve to open, control first controls valve, the second control valve, the 4th control valve
Closed with the 7th control valve, the first outdoor heat exchanger of control and the second outdoor heat exchanger absorb heat.
Above-mentioned technical proposal of the invention, during operation of air conditioner, first to the coil temperature of outdoor heat exchanger
Detected, adjusted come the defrost order to the first outdoor heat exchanger and the second outdoor heat exchanger by outdoor coil temperature
Save so that the more serious leading defrost of outdoor heat exchanger of solidifying frost problem, afterwards outdoor heat exchanger slight to coagulating frost problem again
Carry out defrost so that the first outdoor heat exchanger and the second outdoor heat exchanger replace defrost, defrosting is not shut down in realization；Work as outdoor heat exchange
When device is adjusted to pre-conditioned, illustrate that two outdoor heat exchangers have completed defrost, therefore now just can be to indoor temperature
Deviation is detected, and operation of air conditioner is further adjusted according to testing result so that air-conditioning can keep higher
On the basis of operational energy efficiency, quick regulation is carried out to indoor temperature so that indoor temperature can be rapidly achieved user's requirement, improve
The operational energy efficiency of air-conditioning, reduces operating cost.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows and meets implementation of the invention
Example, and be used to explain principle of the invention together with specification.
Fig. 1 is the structured flowchart of the air-conditioner of one embodiment of the invention；
Fig. 2 is the flow chart of the air conditioner without shutting operation Defrost method of one embodiment of the invention；
Fig. 3 is the flow chart of the air conditioner without shutting operation Defrost method of one embodiment of the invention.
Description of reference numerals：110th, compressor；120th, four-way valve；130th, indoor heat exchanger；140th, first throttle device；
150th, the first outdoor heat exchanger；160th, the second outdoor heat exchanger；170th, second throttling device；181st, the first control valve；182nd,
Two control valves；183rd, the 3rd control valve；184th, the 4th control valve；185th, the 5th control valve；186th, the 6th control valve；187th, the 7th
Control valve.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Other embodiments can include structure, logic, it is electric, process and it is other changes.Embodiment
Only represent possible change.Unless explicitly requested, otherwise single components and functionality is optional, and the order for operating can be with
Change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The scope of bright embodiment includes the gamut of claims, and all obtainable of claims is equal to
Thing.Herein, each embodiment can individually or generally be represented that it is convenient that this is used for the purpose of with term " invention ",
And if in fact disclosing the invention more than, the scope for being not meant to automatically limit the application is any single invention
Or inventive concept.Herein, such as first and second or the like relational terms be used only for by an entity or operation with
Another entity or operation make a distinction, without requiring or implying between these entities or operation there is any actual relation
Or order.And, term " including ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion so that
So that process, method or equipment including a series of key elements not only include those key elements, but also including being not expressly set out
Other key elements, or also include be this process, method or the intrinsic key element of equipment.In the feelings without more limitations
Under condition, the key element limited by sentence "including a ...", it is not excluded that in the process including the key element, method or equipment
In also there is other identical element.Each embodiment herein is described by the way of progressive, and each embodiment is stressed
Be all difference with other embodiment, between each embodiment identical similar portion mutually referring to.For implementing
For example disclosed method, product etc., because it is corresponding with method part disclosed in embodiment, so the comparing of description is simple
Single, related part is referring to method part illustration.
With reference to shown in Figure 1, the embodiment of the invention provides a kind of air-conditioner, including compressor 110, four-way valve 120,
Indoor heat exchanger 130, outdoor heat exchanger and first throttle device 140, first throttle device 140 are disposed in the interior heat exchanger
Between 130 and outdoor heat exchanger, outdoor heat exchanger includes the first outdoor heat exchanger 150 and the second outdoor heat exchanger 160, air-conditioner
During heating operation, there is the first outdoor heat exchanger 150 to absorb heat and for the first outdoor heat exchanger 150 and the second outdoor heat exchanger 160
First working condition of the heat release of two outdoor heat exchanger 160, the heat release of the first outdoor heat exchanger 150 and the second outdoor heat exchanger 160 are inhaled
The 3rd work shape that second working condition and the first outdoor heat exchanger 150 and the second outdoor heat exchanger 160 of heat are absorbed heat
State, wherein the heat exchange area of the first outdoor heat exchanger 150 is S1, the heat exchange area of the second outdoor heat exchanger 160 is S2, wherein S1
>S2。
When needing to defrost the second outdoor heat exchanger 160, air-conditioning can be controlled to be in the first working condition, now compressed
The HTHP refrigerant of the compression of machine 110 first passes through the second outdoor heat exchanger 160 and the heat release of indoor heat exchanger 130, for indoor system
Heat and the defrost of the second outdoor heat exchanger 160, the refrigerant of exchanged heat return to compressor after being absorbed heat through the first outdoor heat exchanger 150
110；When needing to defrost the first outdoor heat exchanger 150, air-conditioning can be controlled to be in the second working condition, now compressor
The HTHP refrigerant of 110 compressions first passes through the first outdoor heat exchanger 150 and the heat release of indoor heat exchanger 130, for indoor heating
With the defrost of the first outdoor heat exchanger 150, the refrigerant of exchanged heat returns to compressor after being absorbed heat through the second outdoor heat exchanger 160
110；When air-conditioner outdoor unit need not defrost, air-conditioning can be controlled to be in the 3rd working condition, the now compression of compressor 110
HTHP refrigerant first passes through the heat release of indoor heat exchanger 130, and for indoor heating, the refrigerant of exchanged heat is changed through the first outdoor
150 and second outdoor heat exchanger of hot device 160 returns to compressor 110 after absorbing heat.
Wherein the heat exchange area of the first outdoor heat exchanger 150 is S1, and the heat exchange area of the second outdoor heat exchanger 160 is S2,
The heat exchange area S=S1+S2, optional S1=70%S, S2=30%S of outdoor heat exchanger.Those skilled in the art can be with root
The size of S1 and S2 is set according to being actually needed, and S1 and S2 can also be identical, and the heat exchange area of two outdoor heat exchangers is arranged to
Different value, can both meet indoor heating amount demand, it is also possible to protect to adjust air-conditioning according to the heat exchange amount difference of indoor demand
Card outdoor heat exchanger alternately defrosts, to improve the comfort level of air-conditioning.
According to above-mentioned technical proposal, when air conditioner heat-production runs, when needing to defrost outdoor heat exchange, can first to second
Outdoor heat exchanger 160 is defrosted, i.e., air-conditioning is in the first working condition, first the first outdoor heat exchanger 150 can also be carried out
Defrosting, i.e. air-conditioning are in the second working condition, after the outdoor heat exchanger defrosting for defrosting in the ban is finished, then to another outdoor heat exchange
Device defrosts, and when so ensuring that air-conditioner defrosting, indoor heating does not stop, and indoor heat exchanger 130 is constantly in heat release work
State, improves the comfort level of air-conditioning.
As shown in figure 1, the embodiment of the invention provides a kind of air-conditioner, the first end C of the first outdoor heat exchanger 150 passes through
First pipeline is connected with the first interface A of four-way reversing valve, is connected with the second interface B of four-way reversing valve by the second pipeline,
The first end E of the second outdoor heat exchanger 160 is connected by the 3rd pipeline with the first interface A of four-way reversing valve, by the 4th pipe
Road is connected with the second interface B of four-way reversing valve, and the 5th pipeline, are included between indoor heat exchanger 130 and outdoor heat exchanger
Six pipelines and the 7th pipeline, the first end G of the 5th pipeline are connected in the first end of indoor heat exchanger 130, the 6th pipeline and
The first end of seven pipelines is commonly connected to the second end H of the 5th pipeline, and the second end of the 6th pipeline is connected to the first outdoor heat exchange
The first end C of device 150, the second end of the 7th pipeline is connected to tie point and the second branch road, and tie point is connected to
Second end D of one outdoor heat exchanger 150, the second branch road is connected to the second end F of the second outdoor heat exchanger 160, on the first pipeline
The first control valve 181 is provided with, the second control valve 182 is provided with the second pipeline, the 3rd control valve is provided with the 3rd pipeline
183, the 4th control valve 184 is provided with the 4th pipeline, the 5th control valve 185 and first throttle device is provided with the 5th pipeline
140, the 6th control valve 186 is provided with the 6th pipeline, the 7th control valve 187 is provided with the 7th pipeline, set on the second branch road
It is equipped with second throttling device 170.
Wherein, the 5th control valve 185 is used to cut off the path of indoor heat exchanger 130 and outdoor heat exchanger, so that the later stage is empty
When tune is safeguarded, after outdoor heat exchanger refrigerant flows back to compressor, there is no new refrigerant inflow.
When air-conditioning heating runs, the refrigerant of HTHP flows out from the second interface B of four-way valve 120, the first outdoor heat exchange
The first end C of device 150 is connected by the second pipeline with the second interface B of four-way valve 120, and the second control valve 182 is used to control height
The refrigerant of warm high pressure flows through the heat release of the first outdoor heat exchanger 150, for the defrost of the first outdoor heat exchanger 150, while first is outdoor
The first end C of heat exchanger 150 is connected by the first pipeline with the first interface A of four-way valve 120, and the first control valve 181 is used to control
The refrigerant that system was absorbed heat through the first outdoor heat exchanger 150 flows back to compressor 110, during the first 150 normal work of outdoor heat exchanger, the
Two control valves 182 are closed, and the first control valve 181 is opened, and when the first outdoor heat exchanger 150 needs defrost, control second controls valve
182 are opened, and the first control valve 181 is closed.The first end E of the second outdoor heat exchanger 160 is by the 4th pipeline and four-way valve 120
Second interface B is connected, and the 4th control valve 184 is used to control the refrigerant of HTHP to flow through the heat release of the second outdoor heat exchanger 160, uses
In the defrost of the second outdoor heat exchanger 160, while the first end E of the second outdoor heat exchanger 160 is by the 3rd pipeline and four-way valve 120
First interface A connections, the 3rd control valve 183 is used to control the refrigerant that was absorbed heat through the second outdoor heat exchanger 160 to flow back to compression
Machine 110, during the second 160 normal work of outdoor heat exchanger, the 4th control valve 184 is closed, and the 3rd control valve 183 is opened, second Room
When external heat exchanger 160 needs defrost, control the 4th controls valve 184 to open, and the 3rd control valve 183 is closed.
In the empty hot heating and defrosting course of work, when air-conditioning is in the first working condition, the first control valve the 181, the 4th is controlled
The control control valve 187 of valve 185 and the 7th of valve processed 184, the 5th is opened, and the second control control valve 183 and the 6th of valve the 182, the 3rd is controlled
Valve processed 186 is closed, and the refrigerant of the compression of compressor 110 flows out through the second interface B of four-way valve 120, and it is outdoor that a part flows into second
The heat release of heat exchanger 160 a, part flows into the heat release of indoor heat exchanger 130, flows through the refrigerant of the second outdoor heat exchanger 160 through second section
The first outdoor heat exchanger 150 is returned to after stream device 170 to absorb heat, flow through the HTHP refrigerant of indoor heat exchanger 130 through first segment
The first outdoor heat exchanger 150 is also returned to after stream device 140 to absorb heat, refrigerant is from after the heat absorption of the first outdoor heat exchanger 150 through four-way valve
120 first interface A flow back into compressor 110；When air-conditioning is in the second working condition, the second control valve the 182, the 3rd is controlled
The control control valve 187 of valve 185 and the 7th of valve the 183, the 5th is opened, and the first control control valve 184 and the 6th of valve the 181, the 4th is controlled
Valve 186 is closed, and the refrigerant of the compression of compressor 110 flows out through the second interface B of four-way valve 120, and a part flows into the first outdoor and changes
The heat release of hot device 150 a, part flows into the heat release of indoor heat exchanger 130, flows through the refrigerant of the first outdoor heat exchanger 150 through the second throttling
The first outdoor heat exchanger 150 is returned to after device 170 to absorb heat, and flows through the refrigerant of indoor heat exchanger 130 after first throttle device 140
The second outdoor heat exchanger 160 can be returned to through second throttling device 170 again to absorb heat, refrigerant absorbs heat from the second outdoor heat exchanger 160
Compressor 110 is flow back into by the first interface A of four-way valve 120.
Air-conditioning heating does not defrost in the course of work, when air-conditioning may be at three working conditions, when air-conditioning is in the 3rd work
When making state, the 3rd control control control valve 186 of valve 185 and the 6th of valve the 183, the 5th is opened, and the first control valve 181, second is controlled
The control control valve 187 of valve 184 and the 7th of valve processed 182, the 4th is closed, and the refrigerant of the compression of compressor 110 is through the second of four-way valve 120
Interface B flows out, and all flows into the heat release of indoor heat exchanger 130, and the refrigerant from the outflow of indoor heat exchanger 130 is through first throttle device
The first outdoor heat exchanger 150 is first passed through after 140 to absorb heat, then by passing through the second outdoor heat exchanger 160 after second throttling device 170
Heat absorption, whole refrigerants gasify more thorough all by throttling twice；Air-conditioning heating not defrost and be also in the course of work
Four working conditions, when air-conditioning is in four working conditions, the first control control control valve 185 of valve the 183, the 5th of valve the 181, the 3rd
Opened with the 7th control valve 187, the second control control control valve 186 of valve 184 and the 6th of valve the 182, the 4th is closed, compressor 110
The refrigerant of compression flows out through the second interface B of four-way valve 120, the heat release of indoor heat exchanger 130 is all flowed into, from indoor heat exchanger
The refrigerant of 130 outflows first passes through the heat release of indoor heat exchanger 130, and the first Room is passed through through the rear portion refrigerant of first throttle device 140
External heat exchanger 150 absorbs heat and directly return to compressor 110 through the first interface A of four-way valve 120, and another part refrigerant is by the second throttling
Absorbed heat by the second outdoor heat exchanger 160 after device 170 and return to compressor 110 through the first interface A of four-way valve 120 again, by
The refrigerant of two outdoor parallel operations gasifies more thorough by throttling twice.
As shown in Figures 2 and 3, the embodiment of the present invention additionally provides a kind of air conditioner without shutting operation Defrost method, including：
Control air-conditioning heating operation；Detection outdoor coil temperature；The working condition of outdoor heat exchanger is carried out according to outdoor coil temperature
Regulation；When outdoor heat exchanger is adjusted to pre-conditioned, the temperature deviation between detection indoor temperature and design temperature；According to temperature
Degree deviation the working condition of outdoor heat exchanger is adjusted so that the first outdoor heat exchanger and the second outdoor heat exchanger wherein it
One operation heat absorption, another operation heat release defrost.
During operation of air conditioner, the coil temperature first to outdoor heat exchanger is detected, by outdoor coil temperature
It is adjusted come the defrost order to the first outdoor heat exchanger and the second outdoor heat exchanger so that the more serious room of solidifying frost problem
The leading defrost of external heat exchanger, carries out defrost so that the first outdoor heat exchanger to coagulating the slight outdoor heat exchanger of frost problem again afterwards
Replace defrost with the second outdoor heat exchanger, defrosting is not shut down in realization；When outdoor heat exchanger is adjusted to pre-conditioned, two are illustrated
Outdoor heat exchanger has completed defrost, therefore now just indoor temperature deviation can be detected, and according to testing result
Operation of air conditioner is further adjusted so that air-conditioning can be on the basis of operational energy efficiency higher be kept, to indoor temperature
Carry out quick regulation so that indoor temperature can be rapidly achieved user's requirement, improve the operational energy efficiency of air-conditioning, reduction runs into
This.
The step of being adjusted to the working condition of outdoor heat exchanger according to outdoor coil temperature includes：Work as b<a<T1 or
b<T1<During a, control first controls the control control control valve 187 of valve the 185, the 7th of valve the 184, the 5th of valve the 181, the 4th to open, and controls
The second control control control valve 186 of valve 183 and the 6th of valve the 182, the 3rd is closed, and the first outdoor heat exchanger 150 of control absorbs heat, and second
The heat release defrost of outdoor heat exchanger 160, wherein a is the coil temperature of the first outdoor heat exchanger, and b is the coil pipe of the second outdoor heat exchanger
Temperature, T1 is design temperature.
Work as b<a<T1 or b<T1<During a, the surface temperature and the first outdoor heat exchanger of the second outdoor heat exchanger 160 are illustrated
150 surface temperature reaches solidifying frost temperature, but the temperature of the second outdoor heat exchanger 160 is lower, therefore frosting problem is tighter
Weight, heat transfer effect is worse, or the surface temperature of the second outdoor heat exchanger 160 reaches solidifying frost temperature, and the first outdoor heat exchanger
150 surface temperature is not up to solidifying frost temperature, and the first outdoor heat exchange with larger heat exchange amount can be made under both of these case
Device 150 absorbs heat, the heat release defrost of the second outdoor heat exchanger 160 with smaller heat exchange amount.For b<a<For the situation of T1, due to
The defrost time of the first outdoor heat exchanger 150 is more than the defrost time of the second outdoor heat exchanger 160, therefore the second outdoor of control is changed
Hot device 160 is earlier than the defrost of the first outdoor heat exchanger 150, it is also possible to reduce the defrost time during being heated to interior,
Influence of the outdoor solidifying frost to air-conditioning heating is reduced, it is ensured that the trouble-free operation of indoor heating, while by with larger heat exchange amount
First outdoor heat exchanger 150 ensures that the stabilization of interior is heated, can be synchronous complete on the basis of air conditioning high efficiency energy-saving run is realized
The defrost treatment of paired second outdoor heat exchanger 160, that realizes the second outdoor heat exchanger 160 does not shut down defrosting operation.
It is pre-conditioned including：The coil temperature of the second outdoor heat exchanger 160 is more than T2 and is continued above time t1.When second
The coil temperature of outdoor heat exchanger 160 is more than T2 and is continued above time t1, then illustrate the defrost temperature of the second outdoor heat exchanger 160
Degree and defrost time have been enough to provide enough defrost heats, meet the heat of the abundant defrost of the second outdoor heat exchanger 160
Amount demand, therefore now it is considered that the second outdoor heat exchanger 160 has completed defrost.
The step of being adjusted to the working condition of outdoor heat exchanger according to temperature deviation includes：As temperature deviation pn≤T3
When, control second controls the control control control valve 187 of valve 185 and the 7th of valve the 183, the 5th of valve the 182, the 3rd to open, control first
The control control control valve 186 of valve the 184, the 6th of valve the 181, the 4th is closed, and controls the heat release defrost of the first outdoor heat exchanger 150, second
Outdoor heat exchanger 160 absorbs heat.After the second outdoor heat exchanger 160 completes defrost, if indoor temperature deviation is less than preset value,
Then only needing to less heat can just meet the heating needs of interior, even if only the second outdoor heat exchanger 160 absorbs heat, or
Indoor heating provides enough heats.Therefore now, after it is determined that the second outdoor heat exchanger 160 completes defrost, it is possible to control
Making the first outdoor heat exchanger 150 carries out heat release defrost, while control the second outdoor heat exchanger 160 to absorb heat interior is heated,
Ensure the normal operation of indoor heating, while realizing that the defrosting of not shutting down of outdoor heat exchanger is operated.
The step of being adjusted to the working condition of outdoor heat exchanger according to temperature deviation also includes：As temperature deviation pn>
During T3, the second outdoor heat exchanger 160 stops defrost operation, and the first outdoor heat exchanger 150 of control and the second outdoor heat exchanger 160 are same
When absorb heat and continue the t2 times；Control second controls the control control control valve of valve 185 and the 7th of valve the 183, the 5th of valve the 182, the 3rd
187 open, and control first controls the control control valve 186 of valve the 184, the 6th of valve the 181, the 4th to close, and controls the first outdoor heat exchanger
150 heat release defrosts, the second outdoor heat exchanger 160 absorbs heat.
If temperature deviation pn>T3, then illustrate also there is larger difference between indoor temperature and design temperature, therefore ought need
Quick regulation is carried out to indoor temperature, when it is reached user's design temperature as early as possible, it is necessary to which outdoor heat exchanger can be provided
Larger heat, meets the heating needs of indoor heat exchanger 130, now relies solely on the first outdoor heat exchanger 150 or second Room
The shortage of heat to be provided of external heat exchanger 160 can now be changed with meeting the heating needs of interior in the second outdoor
After hot device 160 completes defrost, just stop the defrost heat release of the second outdoor heat exchanger 160, while temporarily not controlling the first outdoor to change
Hot device 150 carries out heat release defrost so that the first outdoor heat exchanger 150 and the second outdoor heat exchanger 160 absorb heat simultaneously, it is ensured that indoor
Needs are heated, after two outdoor heat exchangers absorb heat and continue for some time simultaneously, now indoor temperature deviation reduces, can be only
By the second outdoor heat exchanger 160 for interior provides heat exchange heat, therefore the first outdoor heat exchanger 150 can now be put
Thermalization frost, it is also possible to reduce to the influence caused by indoor temperature regulation when taking this kind of working condition, when reduction user uses
Uncomfortable row, improve user use feeling.
The step of being adjusted to the working condition of outdoor heat exchanger according to temperature deviation also includes：Detect that the first outdoor is changed
The coil temperature of hot device 150；When the first outdoor heat exchanger 150 coil temperature more than T4 and duration more than t3 when, control
The 3rd control control control valve 186 of valve 185 and the 6th of valve the 183, the 5th is opened, and control first controls the control valve of valve 181, second
182nd, the 4th control control valve 187 of valve 184 and the 7th is closed, and controls the first outdoor heat exchanger 150 and the second outdoor heat exchanger 160
Heat absorption.When the first outdoor heat exchanger 150 coil temperature more than T4 and duration more than t3 when, then illustrate the first outdoor heat exchange
The defrost of device 150 continue for time enough, it is ensured that the first outdoor heat exchanger 150 completes defrost, now, the first outdoor heat exchange
The outdoor heat exchanger 160 of device 150 and second completes defrost circulation, can control the first outdoor heat exchanger 150 and second Room
External heat exchanger 160 is absorbed heat, and the governing speed of indoor temperature is improved with this so that indoor temperature can meet as soon as possible
The requirement of user.
The step of being adjusted to the working condition of outdoor heat exchanger according to outdoor coil temperature includes：When being unsatisfactory for b<a<
T1 or b<T1<During a, control second controls control control 187 dozens, the valve of control of valve 185 and the 7th of valve the 183, the 5th of valve the 182, the 3rd
Open, control first controls the control control valve 186 of valve the 184, the 6th of valve the 181, the 4th to close, and the first outdoor heat exchanger 150 of control is put
Thermalization frost, the second outdoor heat exchanger 160 absorbs heat, and wherein a is the coil temperature of the first outdoor heat exchanger, and b is the second outdoor heat exchange
The coil temperature of device, T1 is design temperature.When being unsatisfactory for b<a<During T1, it is divided into various situations, such as a<b<T1, or a<T1<
B, or T1<a<B etc..In the case of these, because the surface temperature of the first outdoor heat exchanger 150 is lower, therefore the possibility of frost is coagulated
Property is bigger, in air conditioner heat-production running, it is necessary to the heat release defrost of the first outdoor heat exchanger of priority acccess control 150, second Room
External heat exchanger 160 absorbs heat so that the defrost of one of the first outdoor heat exchanger 150 and the second outdoor heat exchanger 160, another
There is provided indoor heating institute calorific requirement, that realizes air-conditioning does not shut down defrosting operation, at the same avoid causing indoor temperature adjustment compared with
Big influence so that indoor temperature can be remained in OK range, meets the comfort level requirement of human body.
When defrost is carried out to the first outdoor heat exchanger 150 first, it is pre-conditioned including：First outdoor heat exchanger 150
Coil temperature is more than T5 and is continued above time t4.When the so that the coil temperature of outdoor heat exchanger is more than T5 and is continued above the time
T4, the then defrost temperature and defrost time for illustrating the first outdoor heat exchanger 150 has been enough to provide enough defrost heats, full
The heat demand of the abundant defrost of the first outdoor heat exchanger 150 of foot, therefore now can consider the first outdoor heat exchanger 150
Complete defrost.
The step of being adjusted to the working condition of outdoor heat exchanger according to temperature deviation also includes：When temperature deviation pn≤
During T6, control first controls the control control control valve 187 of valve the 185, the 7th of valve the 184, the 5th of valve the 181, the 4th to open, control second
The control control control valve 186 of valve 183 and the 6th of valve the 182, the 3rd is closed, and the first outdoor heat exchanger 150 of control absorbs heat, and second is outdoor
The heat release defrost of heat exchanger 160.After the first outdoor heat exchanger 150 completes defrost, if indoor environment temperature and design temperature
Between difference illustrate that indoor environment temperature is adjusted substantially in values, then and only need to less heat in place and can just expire
Sufficient indoor heating demand, namely only the first outdoor heat exchanger 150 absorbs heat, it is possible to for indoor heating provides enough heats, because
This now, it is determined that the first outdoor heat exchanger 150 complete defrost after, it is possible to control the second outdoor heat exchanger 160 to be put
Thermalization frost, while control the first outdoor heat exchanger 150 to absorb heat being heated to interior, it is ensured that the normal operation of indoor heating, together
The defrosting of not shutting down of Shi Shixian outdoor heat exchangers is operated.
The step of being adjusted to the working condition of outdoor heat exchanger according to temperature deviation also includes：As temperature deviation pn>
During T6, the first outdoor heat exchanger 150 stops defrost operation, and the first outdoor heat exchanger 150 of control and the second outdoor heat exchanger 160 are same
When absorb heat and continue the t5 times；Control first controls the control control control valve of valve the 185, the 7th of valve the 184, the 5th of valve the 181, the 4th
187 open, and control second controls the control control valve 186 of valve 183 and the 6th of valve the 182, the 3rd to close, and controls the first outdoor heat exchanger
150 heat absorptions, the heat release defrost of the second outdoor heat exchanger 160.
If the difference between indoor environment temperature and design temperature exceeds values, indoor environment temperature is illustrated
Difference between design temperature is larger, relies solely on the first shortage of heat to be provided of outdoor heat exchanger 150 to meet
The quick regulation demand of indoor temperature, therefore now can just stop the first Room after the first outdoor heat exchanger 150 completes defrost
The defrost heat release of external heat exchanger 150, while temporarily not controlling the second outdoor heat exchanger 160 to carry out heat release defrost so that the first Room
The outdoor heat exchanger 160 of external heat exchanger 150 and second absorbs heat simultaneously, it is ensured that indoor heating needs, when two outdoor heat exchangers simultaneously
After heat absorption is continued for some time, now indoor temperature deviation reduces, and can only rely on the first outdoor heat exchanger 150 for interior carries
For heat exchange heat, therefore can now heat release defrost be carried out to the second outdoor heat exchanger 160, it is also possible to which this kind of work is taken in reduction
To the influence caused by indoor temperature regulation during state, uncomfortable row when user uses is reduced, improve the use feeling of user.
The step of being adjusted to the working condition of outdoor heat exchanger according to outdoor environment temperature also includes：Detection second Room
The coil temperature of external heat exchanger 160；When the second outdoor heat exchanger 160 coil temperature more than T7 and duration more than t6 when,
The 3rd control control control valve 186 of valve 185 and the 6th of valve the 183, the 5th is controlled to open, control first controls valve 181, second to control
The control control valve 187 of valve 184 and the 7th of valve the 182, the 4th is closed, and controls the first outdoor heat exchanger 150 and the second outdoor heat exchanger
160 heat absorptions.When the second outdoor heat exchanger 160 coil temperature more than T7 and duration more than t6 when, then illustrate the second outdoor
The defrost of heat exchanger 160 continue for time enough, it is ensured that the second outdoor heat exchanger 160 completes defrost, and now, first is outdoor
The outdoor heat exchanger 160 of heat exchanger 150 and second completes defrost circulation, can control the first outdoor heat exchanger 150 and the
Two outdoor heat exchangers 160 are absorbed heat, and the governing speed of indoor temperature are improved with this so that indoor temperature can be as soon as possible
Meet the requirement of user.
In above-mentioned each parameter, T1 is, for example, -5 DEG C, and T2 is, for example, 6 DEG C, and T3 is, for example, 2 DEG C, and T4 is, for example, 6 DEG C, T5
It it is such as 6 DEG C, T6 is, for example, 2 DEG C, and T7 is, for example, 6 DEG C, and t1 is, for example, 1min, and t2 is, for example, 10min, and t3 is, for example, 1min, t4
It is such as 1min, t5 is, for example, 15min, and t6 is, for example, 1min.
It should be appreciated that the invention is not limited in the flow and structure that are described above and be shown in the drawings,
And can without departing from the scope carry out various modifications and changes.The scope of the present invention is only limited by appended claim
System.
Claims (11)
1. a kind of air conditioner without shutting runs Defrost method, it is characterised in that including：
Control air-conditioning heating operation；
Detection outdoor coil temperature；
The working condition of outdoor heat exchanger is adjusted according to outdoor coil temperature；
When outdoor heat exchanger is adjusted to pre-conditioned, the temperature deviation between detection indoor temperature and design temperature；
The working condition of outdoor heat exchanger is adjusted according to temperature deviation so that the first outdoor heat exchanger and the second outdoor are changed
The operation heat absorption of one of hot device, another operation heat release defrost.
2. air conditioner without shutting according to claim 1 runs Defrost method, it is characterised in that described according to outdoor coil pipe used
The step of temperature is adjusted to the working condition of outdoor heat exchanger includes：
Work as b<a<T1 or b<T1<During a, control first controls valve, the 4th control valve, the 5th control valve, the 7th control valve to open,
Control second controls valve, the 3rd control valve and the 6th control valve to close, control the first outdoor heat exchanger heat absorption, the second outdoor heat exchange
Device heat release defrost, wherein a is the coil temperature of the first outdoor heat exchanger, and b is the coil temperature of the second outdoor heat exchanger, and T1 is to set
Constant temperature degree.
3. air conditioner without shutting according to claim 2 runs Defrost method, it is characterised in that the pre-conditioned bag
Include：
The coil temperature of the second outdoor heat exchanger is more than T2 and is continued above time t1.
4. air conditioner without shutting according to claim 3 runs Defrost method, it is characterised in that described according to temperature deviation
The step of working condition to outdoor heat exchanger is adjusted includes：
As temperature deviation pn≤T3, control second controls valve, the 3rd control valve, the 5th control valve and the 7th control valve to open,
Control first controls valve, the 4th control valve, the 6th control valve to close, and controls the first outdoor heat exchanger heat release defrost, and second is outdoor
Heat exchanger absorbs heat.
5. air conditioner without shutting according to claim 3 runs Defrost method, it is characterised in that described according to temperature deviation
The step of working condition to outdoor heat exchanger is adjusted also includes：
As temperature deviation pn ＞ T3, the second outdoor heat exchanger stops defrost operation, controls the first outdoor heat exchanger and second Room
External heat exchanger absorbs heat and continues the t2 times simultaneously；
Control second controls valve, the 3rd control valve, the 5th control valve and the 7th control valve to open, and control first controls valve, the 4th
Control valve, the 6th control valve are closed, and control the first outdoor heat exchanger heat release defrost, the heat absorption of the second outdoor heat exchanger.
6. the air conditioner without shutting according to claim 4 or 5 runs Defrost method, it is characterised in that described according to temperature
The step of deviation is adjusted to the working condition of outdoor heat exchanger also includes：
Detect the coil temperature of the first outdoor heat exchanger；
When the first outdoor heat exchanger coil temperature more than T4 and duration more than t3 when, control the 3rd controls valve, the 5th to control
Valve processed and the 6th control valve are opened, and control first controls valve, the second control valve, the 4th control valve and the 7th control valve to close, control
Make the first outdoor heat exchanger and the heat absorption of the second outdoor heat exchanger.
7. air conditioner without shutting according to claim 1 runs Defrost method, it is characterised in that described according to outdoor coil pipe used
The step of temperature is adjusted to the working condition of outdoor heat exchanger includes：
When being unsatisfactory for b<a<T1 or b<T1<During a, control second controls valve, the 3rd control valve, the 5th control valve and the 7th control
Valve is opened, and control first controls valve, the 4th control valve, the 6th control valve to close, and controls the first outdoor heat exchanger heat release defrost, the
Two outdoor heat exchangers absorb heat, and wherein a is the coil temperature of the first outdoor heat exchanger, and b is the coil temperature of the second outdoor heat exchanger,
T1 is design temperature.
8. air conditioner without shutting according to claim 7 runs Defrost method, it is characterised in that the pre-conditioned bag
Include：
The coil temperature of the first outdoor heat exchanger is more than T5 and is continued above time t4.
9. air conditioner without shutting according to claim 8 runs Defrost method, it is characterised in that described according to temperature deviation
The step of working condition to outdoor heat exchanger is adjusted also includes：
As temperature deviation pn≤T6, control first controls valve, the 4th control valve, the 5th control valve, the 7th control valve to open, control
System second controls valve, the 3rd control valve and the 6th control valve to close, control the first outdoor heat exchanger heat absorption, the second outdoor heat exchanger
Heat release defrost.
10. air conditioner without shutting according to claim 3 runs Defrost method, it is characterised in that described inclined according to temperature
The step of difference is adjusted to the working condition of outdoor heat exchanger also includes：
As temperature deviation pn ＞ T6, the first outdoor heat exchanger stops defrost operation, controls the first outdoor heat exchanger and second Room
External heat exchanger absorbs heat and continues the t5 times simultaneously；
Control first controls valve, the 4th control valve, the 5th control valve, the 7th control valve to open, and control second controls valve, the 3rd control
Valve processed and the 6th control valve are closed, control the first outdoor heat exchanger heat absorption, the second outdoor heat exchanger heat release defrost.
The 11. air conditioner without shutting operation Defrost method according to claim 9 or 10, it is characterised in that described according to temperature
The step of degree deviation is adjusted to the working condition of outdoor heat exchanger also includes：
Detect the coil temperature of the second outdoor heat exchanger；
When the second outdoor heat exchanger coil temperature more than T7 and duration more than t6 when, control the 3rd controls valve, the 5th to control
Valve processed and the 6th control valve are opened, and control first controls valve, the second control valve, the 4th control valve and the 7th control valve to close, control
Make the first outdoor heat exchanger and the heat absorption of the second outdoor heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710214514.0A CN106871382B (en) | 2017-04-01 | 2017-04-01 | Defrosting operation method for air conditioner without stopping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710214514.0A CN106871382B (en) | 2017-04-01 | 2017-04-01 | Defrosting operation method for air conditioner without stopping |
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| Publication Number | Publication Date |
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| CN106871382A true CN106871382A (en) | 2017-06-20 |
| CN106871382B CN106871382B (en) | 2020-05-29 |
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| CN201710214514.0A Active CN106871382B (en) | 2017-04-01 | 2017-04-01 | Defrosting operation method for air conditioner without stopping |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297138A (en) * | 2018-09-13 | 2019-02-01 | 海信科龙电器股份有限公司 | A kind of defrosting judgment method and device |
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| CN106871382B (en) | 2020-05-29 |
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Effective date of registration: 20200909 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Co-patentee after: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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Effective date of registration: 20201030 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee before: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. |
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