CN107504708A - Air-conditioning system and its control method - Google Patents
Air-conditioning system and its control method Download PDFInfo
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- CN107504708A CN107504708A CN201710756242.7A CN201710756242A CN107504708A CN 107504708 A CN107504708 A CN 107504708A CN 201710756242 A CN201710756242 A CN 201710756242A CN 107504708 A CN107504708 A CN 107504708A
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- conditioning system
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Classifications
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/04—Clogging
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a kind of air-conditioning system and its control method, air-conditioning system includes：Compressor, commutate component, outdoor heat exchanger, indoor heat exchanger, first throttle component and the second orifice union, first throttle component and the second orifice union are arranged in parallel between the second end of outdoor heat exchanger and the second end of indoor heat exchanger, first throttle component includes the first throttle device and the first valve component being arranged in series, second orifice union includes second throttling device and the second valve component being arranged in series, wherein, the first valve component and the second valve component is controlled to switch one of them being opened so that in first throttle device and second throttling device and play reducing pressure by regulating flow effect.According to the air-conditioning system of the present invention, the phenomenon of blocking can be avoided the occurrence of, there is good refrigeration, heating effect.
Description
Technical field
The present invention relates to cooling and warming technical field, more particularly, to a kind of air-conditioning system and its control method.
Background technology
Due to conventional refrigerants R22 and R410A GWP (global warming potential, greenhouse effects potential
Value) it is all higher, its substitute, such as R32 and R290, particularly natural refrigerant R290 have been engendered, has achieved good effect
Fruit.At present, major air-conditioning producer mostly uses R32 and R290, but because R290 is combustible refrigerant so that its system fills
Amount is smaller, and its system pressure is smaller, the partial pressure of lubricating oil is larger, and under worst cold case, refrigerant can be anxious with oil body
Increase severely plus, easily there is the phenomenon of block system, cause system oil starvation to lack refrigerant so that the refrigeration of system, heating effect compared with
Difference, the experience effect of user is reduced, and system longtime running can also burn compressor.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention proposes a kind of sky
Adjusting system, the air-conditioning system can avoid the occurrence of the phenomenon of blocking, have good refrigeration, heating effect.
The present invention also proposes a kind of control method of above-mentioned air-conditioning system.
The air-conditioning system of embodiment according to a first aspect of the present invention, including：Compressor, the compressor have exhaust outlet and
Gas returning port；Commutate component, and the commutation component includes first port to the 4th port, the first port and the second port
With one of conducting in the 3rd port, the 4th port with it is another in the second port and the 3rd port
One conducting, the first port are connected with the exhaust outlet, and the 4th port is connected with the gas returning port；Outdoor heat exchanger
And indoor heat exchanger, the first end of the outdoor heat exchanger are connected with the second port, the first end of the indoor heat exchanger
It is connected with the 3rd port；First throttle component and the second orifice union, the first throttle component and second throttling
Modules in parallel is disposed in the outdoor between the second end of heat exchanger and the second end of indoor heat exchanger, and the first throttle component includes
The first throttle device and the first valve component being arranged in series, second orifice union include the second throttling dress being arranged in series
Put with the second valve component, wherein, control first valve component and second valve component switching be opened so that institute
One of them stated in first throttle device and the second throttling device plays reducing pressure by regulating flow effect.
Air-conditioning system according to embodiments of the present invention, by being arranged in parallel first throttle component and second in air-conditioning system
Orifice union, and first throttle component includes the first throttle device and the first valve component that are arranged in series, the second orifice union
Including the second throttling device being arranged in series and the second valve component, the first valve component and the second valve component are opened in switching to be made
One of them obtained in first throttle device and second throttling device carries out reducing pressure by regulating flow to the refrigerant in air-conditioning system, avoids
Refrigerant and lubricating oil block air-conditioning system cause air-conditioning system can not normal operation, so as to ensure that the refrigeration of air-conditioning system,
Heating effect, the experience effect of user is improved, simultaneously as will not block in air-conditioning system, realize air-conditioning system
Long-term normal operation.
According to some embodiments of the present invention, first valve component includes the first valve body, first valve body and institute
The first end for stating first throttle device is connected.
According to some embodiments of the present invention, first valve component further comprises the second valve body, second valve
Body is connected with the second end of the first throttle device.
According to some embodiments of the present invention, second valve component includes the 3rd valve body, the 3rd valve body and institute
The first end for stating second throttling device is connected.
According to some embodiments of the present invention, second valve component further comprises the 4th valve body, the 4th valve
Body is connected with the second end of the second throttling device.
The control method of the air-conditioning system of embodiment according to a second aspect of the present invention, the air-conditioning system are according to the present invention
The air-conditioning system of first aspect embodiment, the air-conditioning system also include the temperature measuring equipment and controller being connected with each other, the survey
Warm device is used for the temperature for detecting outdoor environment temperature or the outdoor heat exchanger, and the control method includes：
Step S1：Open first valve component, close second valve component, the air-conditioning system is normally transported
OK；
Step S2：The controller receives the temperature detection result T of the temperature measuring equipment, contrasts the temperature detection result
T and the air-conditioning system start-up temperature T1, when the temperature detection result T is more than the start-up temperature Td of the air-conditioning system
When, the air-conditioning system keeps normal operation, when the temperature detection result T is less than or equal to the start-up temperature of the air-conditioning system
During Td, the controller starts the run time of the first valve component described in timing；
Step S3：When the Cumulative Elapsed Time t1 of first valve component reaches the switching time t of the air-conditioning system
When, when opening second valve component, close first valve component, and the accumulation of first valve component being run
Between t1 reset, what the controller contrasted the temperature detection result T and the air-conditioning system exits temperature T2, when the temperature
Testing result T is more than when exiting temperature T2 of the air-conditioning system, and the controller stops timing, when the temperature detection result
T is less than or equal to when exiting temperature T2 of the air-conditioning system, and the controller starts the operation of the second valve component described in timing
Time；
Step S4：When the Cumulative Elapsed Time t2 of second valve component reaches the switching time t of the air-conditioning system
When, when opening first valve component, close second valve component, and the accumulation of second valve component being run
Between t2 reset, what the controller contrasted the temperature detection result T and the air-conditioning system exits temperature T2, when the temperature
Testing result T is more than when exiting temperature T2 of the air-conditioning system, and the controller stops timing, when the temperature detection result
T is less than or equal to when exiting temperature T2 of the air-conditioning system, and the controller starts the operation of the first valve component described in timing
Time, and return to step S3.
The control method of air-conditioning system according to embodiments of the present invention, according to outdoor environment temperature or outdoor heat exchanger
Temperature, the switchover operation time by controlling the first valve component and the second valve component so that first throttle device and second
One of them in throttling arrangement carries out reducing pressure by regulating flow, first throttle device and the second throttling dress to the refrigerant in air-conditioning system
Put another in refrigerant and lubricating oil realize and voluntarily thaw, avoid refrigerant and lubricating oil from blocking air-conditioning system especially
Be cause when air-conditioning system is in low-temperature heating air-conditioning system can not normal operation, so as to ensure that the refrigeration of air-conditioning system, system
Thermal effect, the experience effect of user is improved, simultaneously as will not block in air-conditioning system, realize air-conditioning system
Long-term normal operation.
According to some embodiments of the present invention, first valve component includes the first valve body and the second valve body, and described
One valve body is connected with the first end of the first throttle device, the second end phase of second valve body and the first throttle device
Even；When the indoor heat exchanger is in refrigeration mode or dehumidification mode, refrigerant flows to described second by first valve body
Valve body, in step s3, second valve body is at least closed when closing first valve component, at the indoor heat exchanger
When heating mode, refrigerant flows to first valve body by second valve body, in step s3, closes first valve body
First valve body is at least closed during component.
According to some embodiments of the present invention, second valve component includes the 3rd valve body and the 4th valve body, and described
Three valve bodies are connected with the first end of the second throttling device, the 4th valve body and the second end phase of the second throttling device
Even；When the indoor heat exchanger is in refrigeration mode or dehumidification mode, refrigerant flows to the described 4th by the 3rd valve body
Valve body, in step s 4, the 4th valve body is at least closed when closing second valve component, at the indoor heat exchanger
When heating mode, refrigerant flows to the 3rd valve body by the 4th valve body, in step s 4, closes second valve body
The 3rd valve body is at least closed during component.
According to some embodiments of the present invention, when the air-conditioning system switches to defrosting mode by heating mode and is defrosting
When switching back into heating mode after end, first valve component and second valve component is controlled to switch after the scheduled time
Operation.
According to some embodiments of the present invention, the temperature measuring equipment is temperature sensor.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the schematic diagram of air-conditioning system according to embodiments of the present invention, wherein, air-conditioning system is in heating mode, arrow
Head represents the flow direction of refrigerant；
Fig. 2 is another schematic diagram of the air-conditioning system shown in Fig. 1, wherein, air-conditioning system is in the mould that freezes or dehumidify
Formula, arrow represent the flow direction of refrigerant；
Fig. 3 is the control method schematic diagram of air-conditioning system according to embodiments of the present invention.
Reference：
Air-conditioning system 100,
Compressor 1, exhaust outlet 11, gas returning port 12,
Commutate component 2, first port 21, second port 22, the 3rd port 23, the 4th port 24,
Outdoor heat exchanger 3, the first end 31 of outdoor heat exchanger, outdoor heat exchanger the second end 32,
Indoor heat exchanger 4, the first end 41 of indoor heat exchanger, indoor heat exchanger the second end 42,
First throttle component 5, first throttle device 51, the first valve component 52, the first valve body 521, the second valve body 522,
Second orifice union 6, second throttling device 61, the second valve component 62, the 3rd valve body 621, the 4th valve body 622.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that the orientation or position of the instruction such as term "left", "right", " interior ", " outer "
It is based on orientation shown in the drawings or position relationship to put relation, is for only for ease of the description present invention and simplifies description, rather than
Indicate or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore can not
It is interpreted as limitation of the present invention.In addition, define " first ", one can be expressed or be implicitly included to the feature of " second "
Or more this feature.In the description of the invention, unless otherwise indicated, " multiple " are meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The air-conditioning system 100 of embodiment according to a first aspect of the present invention is described below with reference to Fig. 1 and Fig. 2.
As depicted in figs. 1 and 2, air-conditioning system 100 according to embodiments of the present invention, including：Compressor 1, commutation component 2,
Outdoor heat exchanger 3, indoor heat exchanger 4, the orifice union 6 of first throttle component 5 and second.
Specifically, compressor 1 has exhaust outlet 11 and a gas returning port 12, and compressor 1 is by refrigerant compression into HTHP
Gas after by being discharged by exhaust outlet 11, refrigerant is returned in compressor 1 after circulation, then by gas returning port 12.Commutation
Component 2 includes first port 21, second port 22, the 3rd port 23 and the 4th port 24, first port 21 and second port 22
With one of conducting in the 3rd port 23, the 4th port 24 is led with another in the port 23 of second port 22 and the 3rd
Logical, first port 21 is connected with exhaust outlet 11, and the 4th port 24 is connected with gas returning port 12.The first end 31 of outdoor heat exchanger and
Two-port netwerk 22 is connected, and the first end 41 of indoor heat exchanger is connected with the 3rd port 23.
The orifice union 6 of first throttle component 5 and second is arranged in parallel in the second end 32 of outdoor heat exchanger and indoor heat exchange
Between second end 42 of device, first throttle component 5 includes the valve component 52 of first throttle device 51 and first being arranged in series, the
Two orifice unions 6 include the valve component 62 of second throttling device 61 and second being arranged in series, wherein, control the first valve component
52 and second valve component 62 switch be opened so that in first throttle device 51 and second throttling device 61 one of them rise
Acted on to reducing pressure by regulating flow.That is, open the first valve component 52, close the second valve component 62, now first throttle group
Part 5 is in the conduction state, the second orifice union 6 is in cut-off (being not turned on) state so that first throttle device 51 participates in air-conditioning
The circulation of refrigerant in system 100, second throttling device 61 are not involved in the circulation of refrigerant in air-conditioning system 100；Close first
Valve component 52, the second valve component 62 is opened, now first throttle component 5 is in cut-off state, the second orifice union 6 is in
Conducting state so that first throttle device 51 is not involved in the circulation of refrigerant in air-conditioning system 100, second throttling device 61 participates in
The circulation of refrigerant in air-conditioning system 100.
It is understood that in the running of air-conditioning system 100, its in the orifice union 6 of first throttle component 5 and second
In one it is in the conduction state, below with air-conditioning system 100 run original state under, first throttle component 5 be in lead
Logical state, the second orifice union 6 illustrate exemplified by being in cut-off state, certainly, in the original state that air-conditioning system 100 is run
Under, it is in the conduction state to can also be that first throttle component 5 is in cut-off state, the second orifice union 6.
As shown in Fig. 2 air-conditioning system 100 is run and is in refrigeration mode or dehumidification mode, the first port for the component 2 that commutates
21 turn on second port 22, and the 3rd port 23 turns on the 4th port 24.Direction as shown by the arrows in Figure 2, compressor 1 will
Refrigerant compression into HTHP gas and discharged by exhaust outlet 11, refrigerant by first port 21 enter commutation component 2,
And entered after flowing through the second port 22 of commutation component 2, the first end of outdoor heat exchanger 31 successively in outdoor heat exchanger 3；By
In the first valve component 52 is in open mode, the second valve component 62 is closed, refrigerant is by outdoor heat exchanger
First throttle component 5 is flow to after the outflow of second end 32, so as to which first throttle device 51 can carry out reducing pressure by regulating flow to refrigerant, and
Refrigerant is flow in indoor heat exchanger 4 by the second end 42 of indoor heat exchanger and exchanged heat afterwards, so as to adjust indoor temperature；Refrigeration
After agent is flowed out by the first end 41 of indoor heat exchanger again, entered by the 3rd port 23 of commutation component 2 in commutation component 2, and
Pass sequentially through the 4th port 24, gas returning port 12 is returned in compressor 1.So far, air-conditioning system 100 completes process of refrigerastion or removed
Wet process.
After air-conditioning system 100 runs a period of time, the first valve component 52 of switching to closed mode, the second valve component
62 to open mode, and now refrigerant can not flow in first throttle component 5, refrigerant by outdoor heat exchanger the second end 32
The second orifice union 6 is flow to after outflow, so as to which second throttling device 61 can carry out reducing pressure by regulating flow, then refrigerant to refrigerant
It is flow in indoor heat exchanger 4 and is exchanged heat by the second end 42 of indoor heat exchanger.
Thus, under the refrigeration mode or dehumidification mode of air-conditioning system 100, the first valve component 52 and second is opened in switching
Valve component 62 cause first throttle device 51 and second throttling device 61 in one of them to the refrigeration in air-conditioning system 100
Agent carries out reducing pressure by regulating flow, and the refrigerant in another in first throttle device 51 and second throttling device 61 voluntarily thaws, and keeps away
Exempt from refrigerant and lubricating oil block air-conditioning system 100 cause air-conditioning system 100 can not normal operation, so as to ensure that air-conditioning system
100 refrigeration, the experience effect of user is improved, simultaneously as will not block in air-conditioning system 100, realized
The long-term normal operation of air-conditioning system 100.
As shown in figure 1, air-conditioning system 100 is run and is in heating mode, the first port 21 of component 2 that commutates and the 3rd port
23 conductings, second port 22 turn on the 4th port 24.Direction as shown by the arrows in Figure 1, compressor 1 by refrigerant compression into
The gas of HTHP is simultaneously discharged by exhaust outlet 11, and refrigerant enters commutation component 2 by first port 21, and successively by changing
To the 3rd port 23 of component 2, indoor heat exchanger first end 41 after enter in indoor heat exchanger 4 and exchanged heat, with regulation
Indoor temperature；Because the first valve component 52 is in open mode, the second valve component 62 is closed, refrigerant is by room
First throttle component 5 is flow to after the second end 42 outflow of interior heat exchanger, so as to which first throttle device 51 can be carried out to refrigerant
Reducing pressure by regulating flow, then refrigerant flow in outdoor heat exchanger 3 and exchanged heat by the second end 32 of outdoor heat exchanger, refrigerant is from room
The first end 31 of external heat exchanger flows out, and is entered by the second port 22 of commutation component 2 in commutation component 2, and passes sequentially through
4th port 24, gas returning port 12 are returned in compressor 1.So far, air-conditioning system 100 completes heating operations.
After air-conditioning system 100 runs a period of time, the first valve component 52 of switching to closed mode, the second valve component
62 to open mode, and now refrigerant can not flow in first throttle component 5, refrigerant by indoor heat exchanger the second end 42
The second orifice union 6 is flow to after outflow, so as to which second throttling device 61 can carry out reducing pressure by regulating flow, then refrigerant to refrigerant
It is flow in outdoor heat exchanger 3 and is exchanged heat by the second end 32 of outdoor heat exchanger.
Thus, under the heating mode of air-conditioning system 100, the first valve component 52 and the second valve component 62 are opened in switching
So that one of them in first throttle device 51 and second throttling device 61 throttles to the refrigerant in air-conditioning system 100
Decompression, the refrigerant in another in first throttle device 51 and second throttling device 61 voluntarily thaw, avoid refrigerant and
Lubricating oil block air-conditioning system 100 cause air-conditioning system 100 can not normal operation, so as to ensure that the heating of air-conditioning system 100
Effect, the experience effect of user is improved, simultaneously as will not block in air-conditioning system 100, realize air-conditioning system
100 long-term normal operation.
Air-conditioning system 100 according to embodiments of the present invention, by being arranged in parallel first throttle component in air-conditioning system 100
5 and second orifice union 6, and first throttle component 5 includes the valve component 52 of first throttle device 51 and first that is arranged in series,
Second orifice union 6 includes the valve component 62 of second throttling device 61 and second being arranged in series, and the first valve body group is opened in switching
The valve component 62 of part 52 and second cause first throttle device 51 and second throttling device 61 in one of them to air-conditioning system
Refrigerant in 100 carries out reducing pressure by regulating flow, avoids refrigerant and lubricating oil from blocking air-conditioning system 100 and cause the nothing of air-conditioning system 100
Method normal operation, so as to ensure that the refrigeration of air-conditioning system 100, heating effect, the experience effect of user is improved, meanwhile, by
In that will not block in air-conditioning system 100, the long-term normal operation of air-conditioning system 100 is realized.
In a particular embodiment of the present invention, as depicted in figs. 1 and 2, the first valve component 52 includes the first valve body 521,
First valve body 521 is connected with the first end (for example, Fig. 1 and Fig. 2 left end) of first throttle device 51.Open the first valve body 521
The first valve component 52 is opened, first throttle component 5 is in the conduction state, and now first throttle device 51 can be to air-conditioning system
Refrigerant in system 100 carries out reducing pressure by regulating flow；Close the first valve body 521 and close the first valve component 52, first throttle component 5
In cut-off state, now first throttle device 51 can not be to the refrigerant progress reducing pressure by regulating flow in air-conditioning system 100, structure letter
List, it is easy to implement.Wherein, the first valve body 521 can also be connected with the second end of first throttle device 51；First valve body 521 can
Elect magnetic valve, but not limited to this as.
In further embodiment of the present invention, the first valve component 52 further comprises the second valve body 522, the second valve body
522 are connected with the second end (for example, right-hand member in Fig. 1 and Fig. 2) of first throttle device 51.Now, at the same open the first valve body
521 and second valve body 522 i.e. open the first valve component 52, first throttle component 5 is in the conduction state, first throttle device 51
Reducing pressure by regulating flow can be carried out to the refrigerant in air-conditioning system 100；When needing to close the first valve component 52, the first valve body is closed
521 and second at least one in valve body 522, that is to say, that the first valve body 521 can be simply turned off and the second valve body 522 is in
Open mode, can also be simply turned off the second valve body 522 and the first valve body 521 is in open mode, can also close the first valve body
521 and close the second valve body 522, now first throttle component 5 be in cut-off state, first throttle device 51 can not be to air-conditioning
Refrigerant in system 100 carries out reducing pressure by regulating flow, simple in construction, be easy to implement.Wherein, the second valve body 522 is chosen as magnetic valve,
But not limited to this.
As shown in figure 1, air-conditioning system 100 is in heating mode and first throttle component 5 participates in the circulation of refrigerant, now
Second orifice union 6 is not involved in the circulation of refrigerant, and refrigerant flows to outdoor heat exchanger by indoor heat exchanger 4 after reducing pressure by regulating flow
3, i.e. refrigerant flows to the first valve body 521 by the second valve body 522.Due to the temperature phase of refrigerant flowed out from indoor heat exchanger 4
The temperature of refrigerant for flowing to outdoor heat exchanger 3 after reducing pressure by regulating flow is higher, when needing to switch to the second orifice union 6
Participate in the circulation of refrigerant, when first throttle component 5 is not involved in the circulation of refrigerant, the first valve body 521 and the can be simply turned off
Two valve bodies 522 are open mode so that keep connecting between first throttle device 51 and indoor heat exchanger 4, i.e., first throttle fills
Putting the refrigerant in 51 from the refrigerant heat absorption that indoor heat exchanger 4 flows out, can realize the quick-thawing of first throttle component 5,
Avoid first throttle device 51 from blocking, ensure that the normal operation of air-conditioning system 100.
As shown in Fig. 2 air-conditioning system 100 is in refrigeration mode or dehumidification mode and first throttle component 5 participates in refrigerant
Circulation, now the second orifice union 6 be not involved in the circulation of refrigerant, refrigerant is flowed by outdoor heat exchanger 3 after reducing pressure by regulating flow
To indoor heat exchanger 4, i.e. refrigerant flows to the second valve body 522 by the first valve body 521.Due to the system flowed out from outdoor heat exchanger 3
The temperature of cryogen is higher relative to the temperature for the refrigerant that indoor heat exchanger 4 is flowed to after reducing pressure by regulating flow, when needs switch to
When second orifice union 6 participates in the circulation of refrigerant, first throttle component 5 is not involved in the circulation of refrigerant, the can be simply turned off
Two valve bodies 522 and the first valve body 521 are open mode so that the company of holding between first throttle device 51 and outdoor heat exchanger 3
Logical, i.e., the refrigerant in first throttle device 51 can realize first throttle group from the refrigerant heat absorption that outdoor heat exchanger 3 flows out
The quick-thawing of part 5, avoid first throttle device 51 from blocking, ensure that the normal operation of air-conditioning system 100.
Certainly, no matter air-conditioning system 100 is in heating mode, refrigeration mode or dehumidification mode, when needing to switch to
When two orifice unions 6 participate in the circulation of refrigerant, first throttle component 5 is not involved in the circulation of refrigerant, first can also be closed
Valve body 521 and close the second valve body 522, now the refrigerant in first throttle device 51 can be absorbed heat from surrounding environment, keep away
Exempt from first throttle device 51 to block, can equally ensure the normal operation of air-conditioning system 100.
In a particular embodiment of the present invention, the second valve component 62 includes the 3rd valve body 621, the 3rd valve body 621 and
The first end (for example, Fig. 1 and left end in Fig. 2) of two throttling arrangements 61 is connected.Open the 3rd valve body 621 and open the second valve body
Component 62, the second orifice union 6 is in the conduction state, and now second throttling device 61 can be to the refrigeration in air-conditioning system 100
Agent carries out reducing pressure by regulating flow；To close the 3rd valve body 621 and close the second valve component 62, the second orifice union 6 is in cut-off state,
Now second throttling device 61 can not carry out reducing pressure by regulating flow to the refrigerant in air-conditioning system 100, simple in construction, be easy to implement.
Wherein, the 3rd valve body 621 can also be connected with the second end of second throttling device 61；3rd valve body 621 is chosen as magnetic valve, but
Not limited to this.
Further, the second valve component 62 further comprises the 4th valve body 622, and the 4th valve body 622 and the second throttling fill
61 the second end (for example, Fig. 1 and right-hand member in Fig. 2) is put to be connected.Now, the 3rd valve body 621 and the 4th valve body 622 are opened while
The second valve component 62 is opened, the second orifice union 6 is in the conduction state, and second throttling device 61 can be to air-conditioning system
Refrigerant in 100 carries out reducing pressure by regulating flow；When needing to close the second valve component 62, the 3rd valve body 621 and the 4th valve body are closed
It is at least one in 622, that is to say, that the 3rd valve body 621 can be simply turned off and the 4th valve body 622 is in open mode, also may be used
To be simply turned off the 3rd valve body 621 and the 4th valve body 622 is in open mode, the 3rd valve body 621 can also be closed and close the
Four valve bodies 622, now the second orifice union 6 be in cut-off state, second throttling device 61 can not be to the system in air-conditioning system 100
Cryogen carries out reducing pressure by regulating flow, simple in construction, be easy to implement.Wherein, the 4th valve body 622 is chosen as magnetic valve, but not limited to this.
As shown in figure 1, air-conditioning system 100 is in heating mode and the second orifice union 6 participates in the circulation of refrigerant, now
First throttle component 5 is not involved in the circulation of refrigerant, and refrigerant flows to outdoor heat exchanger by indoor heat exchanger 4 after reducing pressure by regulating flow
3, i.e. refrigerant flows to the 3rd valve body 621 by the 4th valve body 622.Due to the temperature phase of refrigerant flowed out from indoor heat exchanger 4
The temperature of refrigerant for flowing to outdoor heat exchanger 3 after reducing pressure by regulating flow is higher, when needing to switch to first throttle component 5
Participate in the circulation of refrigerant, when the second orifice union 6 is not involved in the circulation of refrigerant, the 3rd valve body 621 and the can be simply turned off
Four valve bodies 622 are open mode so that keep connecting between second throttling device 61 and indoor heat exchanger 4, i.e., the second throttling dress
Putting the refrigerant in 61 from the refrigerant heat absorption that indoor heat exchanger 4 flows out, can realize the quick-thawing of the second orifice union 6.
As shown in Fig. 2 air-conditioning system 100 is in refrigeration mode or dehumidification mode and the second orifice union 6 participates in refrigerant
Circulation, now first throttle component 5 be not involved in the circulation of refrigerant, refrigerant is flowed by outdoor heat exchanger 3 after reducing pressure by regulating flow
To indoor heat exchanger 4, i.e. refrigerant flows to the 4th valve body 622 by the 3rd valve body 621.Due to the system flowed out from outdoor heat exchanger 3
The temperature of cryogen is higher relative to the temperature for the refrigerant that indoor heat exchanger 4 is flowed to after reducing pressure by regulating flow, when needs switch to
When first throttle component 5 participates in the circulation of refrigerant, the second orifice union 6 is not involved in the circulation of refrigerant, the can be simply turned off
Four valve bodies 622 and the 3rd valve body 621 are open mode so that the company of holding between second throttling device 61 and outdoor heat exchanger 3
Logical, i.e., the refrigerant in second throttling device 61 can realize the second throttling group from the refrigerant heat absorption that outdoor heat exchanger 3 flows out
The quick-thawing of part 6.
Certainly, no matter air-conditioning system 100 is in heating mode, refrigeration mode or dehumidification mode, when needing to switch to
When one orifice union 5 participates in the circulation of refrigerant, the second orifice union 6 is not involved in the circulation of refrigerant, the 3rd can also be closed
Valve body 621 and close the 4th valve body 622, now the refrigerant in second throttling device 61 can be absorbed heat from surrounding environment, keep away
Exempt from second throttling device 61 to block, can equally ensure the normal operation of air-conditioning system 100.
The control method of the air-conditioning system 100 of embodiment according to a second aspect of the present invention, air-conditioning system 100 are according to this hair
The air-conditioning system 100 of bright first aspect embodiment, air-conditioning system 100 also include the temperature measuring equipment and controller being connected with each other, surveyed
Warm device is used for the temperature for detecting outdoor environment temperature or outdoor heat exchanger 3, and temperature measuring equipment is chosen as temperature sensor, but not
It is limited to this.When air-conditioning system 100 is applied to air conditioner, air conditioner includes indoor apparatus of air conditioner and air-conditioner outdoor unit, wherein indoor
Heat exchanger 4 is located in indoor apparatus of air conditioner, and compressor 1, commutation component 2, outdoor heat exchanger 3, first throttle component 5 and second throttle
Component 6 is respectively positioned in air-conditioner outdoor unit.The control method of air-conditioning system 100 includes：
First, open the first valve component 52, close the second valve component 62, the normal operation of air-conditioning system 100, now the
One throttling arrangement 51 carries out reducing pressure by regulating flow to the refrigerant in air-conditioning system 100, and second throttling device 61 can not be to air-conditioning system
Refrigerant in 100 carries out reducing pressure by regulating flow.
Then, controller receives the temperature detection result T of temperature measuring equipment, reduced temperature testing result T and air-conditioning system 100
Start-up temperature T1.When temperature detection result T is more than the start-up temperature T1 of air-conditioning system 100, air-conditioning system 100 keeps normal
Operation, now the temperature of the refrigerant in first throttle device 51 and lubricating oil is higher, and first throttle device 51 will not block up
Plug, so as to which first throttle device 51 can normal operation, air-conditioning system 100 can long-term normal operations for a long time；Work as temperature detection
As a result when T is less than or equal to the start-up temperature T1 of air-conditioning system 100, the temperature of refrigerant and lubricating oil in first throttle device 51
Relatively low, controller starts the run time of the first valve component of timing 52.
Secondly, when the Cumulative Elapsed Time t1 of the first valve component 52 reaches the switching time t of air-conditioning system 100, beat
Open the second valve component 62, close the first valve component 52, now second throttling device 61 can be to the system in air-conditioning system 100
Cryogen carries out reducing pressure by regulating flow, and first throttle device 51 can not carry out reducing pressure by regulating flow to the refrigerant in air-conditioning system 100, and by the
The Cumulative Elapsed Time t1 of one valve component 52 is reset, meanwhile, controller reduced temperature testing result T and air-conditioning system 100
Exit temperature T2.
When temperature detection result T is more than when exiting temperature T2 of air-conditioning system 100, controller stops timing, and now second
The temperature of refrigerant and lubricating oil in throttling arrangement 61 is higher, and second throttling device 61 will not block, the second throttling group
The state that part 6 keeps current is run；When temperature detection result T is less than or equal to when exiting temperature T2 of air-conditioning system 100, the second section
The temperature of refrigerant and lubricating oil in stream device 61 is relatively low, and controller starts the run time of the second valve component of timing 62.
And the refrigerant and lubricating oil in first throttle device 51 can voluntarily thaw, avoid switching to first throttle device 51 again and transport
Blocked during row.
Then, when the Cumulative Elapsed Time t2 of the second valve component 62 reaches the switching time t of air-conditioning system 100, beat
Open the first valve component 52, close the second valve component 62, now first throttle device 51 can be to the system in air-conditioning system 100
Cryogen carries out reducing pressure by regulating flow, and second throttling device 61 can not carry out reducing pressure by regulating flow to the refrigerant in air-conditioning system 100, and by the
The Cumulative Elapsed Time t2 of two valve components 62 is reset, while controller reduced temperature testing result T and air-conditioning system 100 are moved back
Go out temperature T2.
When temperature detection result T is more than when exiting temperature T2 of air-conditioning system 100, controller stops timing, and now first
The temperature of refrigerant and lubricating oil in throttling arrangement 51 is higher, and first throttle device 51 will not block, first throttle group
The state that part 5 keeps current is run；When temperature detection result T is less than or equal to when exiting temperature T2 of air-conditioning system 100, first segment
The temperature of refrigerant and lubricating oil in stream device 51 is relatively low, and controller starts the run time of the first valve component of timing 52,
And return to step S3.And the refrigerant and lubricating oil in second throttling device 61 can voluntarily thaw, avoid switching to again
Two throttling arrangements 61 block when running.
It is understood that air-conditioning system 100 run original state under, can also be close the first valve component 52,
Open the second valve component 62 so that it is in the conduction state that first throttle component 5 is in cut-off state, the second orifice union 6, together
Sample is it is also ensured that the normal operation of air-conditioning system 100.Wherein, the switching time t, air-conditioning system 100 of air-conditioning system 100 startup
Temperature T1 and the temperature T2 that exits of air-conditioning system 100 can specifically be set according to actual conditions.
The control method of air-conditioning system 100 according to embodiments of the present invention, according to outdoor environment temperature or outdoor heat exchange
The temperature of device 3, the switchover operation time by controlling the first valve component 52 and the second valve component 62 so that first throttle fills
Put 51 and second throttling device 61 in one of them in air-conditioning system 100 refrigerant carry out reducing pressure by regulating flow, first throttle
Refrigerant and lubricating oil in another in device 51 and second throttling device 61, which are realized, voluntarily to thaw, and avoids refrigerant and profit
Lubricating oil blocks air-conditioning system 100 causes air-conditioning system 100 not transport normally when especially air-conditioning system 100 is in low-temperature heating
OK, so as to ensure that the refrigeration of air-conditioning system 100, heating effect, the experience effect of user is improved, simultaneously as air-conditioning system
It will not block in system 100, realize the long-term normal operation of air-conditioning system 100.
In a particular embodiment of the present invention, the first valve component 52 includes the first valve body 521 and the second valve body 522, the
One valve body 521 is connected with the first end of first throttle device 51, the second end phase of the second valve body 522 and first throttle device 51
Even.Specifically, the both ends of the first valve body 521 first end with first throttle device 51, the second end of outdoor heat exchanger respectively
32 are connected, the both ends of the second valve body 522 the second end with first throttle device 51, the phase of the second end 42 of indoor heat exchanger respectively
Even.
When air-conditioning system 100 is in refrigeration mode or dehumidification mode, outdoor heat exchanger 3 is condenser, indoor heat exchanger 4
For evaporator, refrigerant flows to indoor heat exchanger 4 by outdoor heat exchanger 3 after reducing pressure by regulating flow, i.e., refrigerant is by the first valve body 521
Flow to the second valve body 522.Because the temperature of refrigerant that is flowed out from outdoor heat exchanger 3 after reducing pressure by regulating flow relative to flowing to room
The temperature of the refrigerant of interior heat exchanger 4 is higher, in step s3, when closing the first valve component 52, is simply turned off the second valve body
522 and first valve body 521 be open mode so that keep connecting between first throttle device 51 and outdoor heat exchanger 3, i.e., the
Refrigerant in one throttling arrangement 51 can be from the refrigerant heat absorption that outdoor heat exchanger 3 flows out, to improve first throttle device 51
The temperature of inner refrigerant and lubricating oil, first throttle device 51 is avoided to block so that air-conditioning system 100 switches the first valve body
When component 52 is opened, the normal operation of air-conditioning system 100 ensure that.
Certainly, in step s3, when closing the first valve component 52, the second valve body 522 and closing first can also be closed
Valve body 521, cut-off state, first segment are now between first throttle device 51 and outdoor heat exchanger 3, indoor heat exchanger 4
Refrigerant and lubricating oil in stream device 51 can absorb heat to improve temperature from surrounding environment, avoid first throttle device 51 from sending out
Raw to block, equally ensure that can be with normal operation when the first valve component 52 of switching of air-conditioning system 100 is opened.
When air-conditioning system 100 is in heating mode, outdoor heat exchanger 3 is evaporator, and indoor heat exchanger 4 is condenser,
Refrigerant flows to outdoor heat exchanger 3 by indoor heat exchanger 4 after reducing pressure by regulating flow, i.e. refrigerant flows to first by the second valve body 522
Valve body 521.Because the temperature of refrigerant that is flowed out from indoor heat exchanger 4 after reducing pressure by regulating flow relative to flowing to outdoor heat exchanger
The temperature of 3 refrigerant is higher, in step s3, when closing the first valve component 52, is simply turned off the first valve body 521 and second
Valve body 522 is open mode so that keeps connecting between first throttle device 51 and indoor heat exchanger 4, i.e. first throttle device
Refrigerant in 51 can from the refrigerant heat absorption that indoor heat exchanger 4 flows out, with improve the inner refrigerant of first throttle device 51 and
The temperature of lubricating oil, first throttle device 51 is avoided to block so that air-conditioning system 100 switches the first valve component 52 and opened
When, it ensure that the normal operation of air-conditioning system 100.
Certainly, in step s3, when closing the first valve component 52, the first valve body 521 and closing second can also be closed
Valve body 522, cut-off state, first segment are now between first throttle device 51 and outdoor heat exchanger 3, indoor heat exchanger 4
Refrigerant and lubricating oil in stream device 51 can absorb heat to improve temperature from surrounding environment, avoid first throttle device 51 from sending out
Raw to block, equally ensure that can be with normal operation when the first valve component 52 of switching of air-conditioning system 100 is opened.
In other specific embodiments of the present invention, the second valve component 62 includes the 3rd valve body 621 and the 4th valve body
622, the 3rd valve body 621 is connected with the first end of second throttling device 61, the 4th valve body 622 and the second of second throttling device 61
End is connected.Specifically, the both ends of the 3rd valve body 621 first end with second throttling device 61, the of outdoor heat exchanger respectively
Two ends 32 are connected, the both ends of the 4th valve body 622 the second end with second throttling device 61, the second end 42 of indoor heat exchanger respectively
It is connected.
When air-conditioning system 100 is in refrigeration mode or dehumidification mode, outdoor heat exchanger 3 is condenser, indoor heat exchanger 4
For evaporator, refrigerant flows to indoor heat exchanger 4 by outdoor heat exchanger 3 after reducing pressure by regulating flow, i.e., refrigerant is by the 3rd valve body 621
Flow to the 4th valve body 622.Because the temperature of refrigerant that is flowed out from outdoor heat exchanger 3 after reducing pressure by regulating flow relative to flowing to room
The temperature of the refrigerant of interior heat exchanger 4 is higher, in step s 4, when closing the second valve component 62, is simply turned off the 4th valve body
622 and the 3rd valve body 621 be open mode so that keep connecting between second throttling device 61 and outdoor heat exchanger 3, i.e., the
Refrigerant in two throttling arrangements 61 can be from the refrigerant heat absorption that outdoor heat exchanger 3 flows out, to improve second throttling device 61
The temperature of inner refrigerant and lubricating oil, second throttling device 61 is avoided to block so that air-conditioning system 100 switches the second valve body
When component 62 is opened, the normal operation of air-conditioning system 100 ensure that.
Certainly, in step s 4, when closing the second valve component 62, the 4th valve body 622 and closing the 3rd can also be closed
Valve body 621, cut-off state, the second section are now between second throttling device 61 and outdoor heat exchanger 3, indoor heat exchanger 4
Refrigerant and lubricating oil in stream device 61 can absorb heat to improve temperature from surrounding environment, avoid second throttling device 61 from sending out
Raw to block, equally ensure that can be with normal operation when the second valve component 62 of switching of air-conditioning system 100 is opened.
When air-conditioning system 100 is in heating mode, outdoor heat exchanger 3 is evaporator, and indoor heat exchanger 4 is condenser,
Refrigerant flows to outdoor heat exchanger 3 by indoor heat exchanger 4 after reducing pressure by regulating flow, i.e. refrigerant flows to the 3rd by the 4th valve body 622
Valve body 621.Because the temperature of refrigerant that is flowed out from indoor heat exchanger 4 after reducing pressure by regulating flow relative to flowing to outdoor heat exchanger
The temperature of 3 refrigerant is higher, in step s 4, when closing the second valve component 62, is simply turned off the 3rd valve body 621 and the 4th
Valve body 622 is open mode so that keeps connecting between second throttling device 61 and indoor heat exchanger 4, i.e. second throttling device
Refrigerant in 61 can from the refrigerant heat absorption that indoor heat exchanger 4 flows out, with improve the inner refrigerant of second throttling device 61 and
The temperature of lubricating oil, second throttling device 61 is avoided to block so that air-conditioning system 100 switches the second valve component 62 and opened
When, it ensure that the normal operation of air-conditioning system 100.
Certainly, in step s 4, when closing the second valve component 62, the 3rd valve body 621 and closing the 4th can also be closed
Valve body 622, cut-off state, the second section are now between second throttling device 61 and outdoor heat exchanger 3, indoor heat exchanger 4
Refrigerant and lubricating oil in stream device 61 can absorb heat to improve temperature from surrounding environment, avoid second throttling device 61 from sending out
Raw to block, equally ensure that can be with normal operation when the second valve component 62 of switching of air-conditioning system 100 is opened.
Further, system is switched back into after air-conditioning system 100 switches to defrosting mode by heating mode and terminates in defrosting
During heat pattern, the first valve component 52 and the switchover operation of the second valve component 62 are controlled after the scheduled time.Specifically, air-conditioning is worked as
System 100 meets that air-conditioning system 100 opens defrosting during defrosting condition (for example, the temperature of outdoor heat exchanger 3 is less than defrosting temperature)
Pattern, can be now that indoor heat exchanger 4 freezes, outdoor heat exchanger 3 heats, after the completion of being defrosted by certain time, air-conditioning system
System 100 is again converted to heating mode, and after the scheduled time, controls the first valve component 52 and the second valve component 62 to cut
Change operation, that is to say, that before defrosting mode, first throttle component 5 throttling drop is carried out to the refrigerant in air-conditioning system 100
Press, after defrosting mode, switch to the second orifice union 6 and reducing pressure by regulating flow is carried out to the refrigerant in air-conditioning system 100；Or remove
Before white pattern, the second orifice union 6 reducing pressure by regulating flow is carried out to the refrigerant in air-conditioning system 100, after defrosting mode, switching
Reducing pressure by regulating flow is carried out to the refrigerant in air-conditioning system 100 to first throttle component 5.Thus, it further avoid air-conditioning system
100 block, and ensure 100 long-term normal operation of air-conditioning system.It is understood that the scheduled time can be according to actual conditions
It is specific to set.
Other of air-conditioning system 100 according to embodiments of the present invention are formed and operated for those of ordinary skill in the art
For be all known, be not detailed herein.
Air-conditioning system according to embodiments of the present invention is described in detail with a specific embodiment below with reference to Fig. 1-Fig. 3
100 and its control method.It is worth understanding, it is described below to be merely illustrative, rather than the concrete restriction to the present invention.
As depicted in figs. 1 and 2, air-conditioning system 100 includes compressor 1, commutation component 2, outdoor heat exchanger 3, indoor heat exchange
Device 4, first throttle component 5, the second orifice union 6 and the temperature measuring equipment and controller being connected with each other.
Specifically, compressor 1 has exhaust outlet 11 and gas returning port 12, and commutation component 2 includes first port 21, second port
22nd, the 3rd port 23 and the 4th port 24, first port 21 and one of conducting in the port 23 of second port 22 and the 3rd,
4th port 24 turns on another in the port 23 of second port 22 and the 3rd, and first port 21 is connected with exhaust outlet 11, the
Four ports 24 are connected with gas returning port 12.The first end 31 of outdoor heat exchanger is connected with second port 22, and the first of indoor heat exchanger
End 41 is connected with the 3rd port 23.
The orifice union 6 of first throttle component 5 and second is arranged in parallel in the second end 32 of outdoor heat exchanger and indoor heat exchange
Between second end 42 of device, first throttle component 5 includes first throttle device 51, the first valve body 521 and second being arranged in series
Valve body 522, the second orifice union 6 include second throttling device 61, the 3rd valve body 621 and the 4th valve body 622 being arranged in series, its
In, control first segment by controlling the state of the first valve body 521, the second valve body 522, the 3rd valve body 621 and the 4th valve body 622
The switchover operation of the stream orifice union 6 of component 5 and second is opened so that in first throttle device 51 and second throttling device 61
One of them plays reducing pressure by regulating flow effect.
The control method of air-conditioning system 100 is illustrated so that air-conditioning system 100 is in low-temperature heating operating mode as an example below,
The switching time t of wherein air-conditioning system 100 could be arranged to 2h (i.e. 2 hours), and the start-up temperature T1 of air-conditioning system 100 can be set
2 DEG C are set to, the temperature T2 that exits of air-conditioning system 100 could be arranged to 7 DEG C, and the temperature detection result T of temperature measuring equipment refers to room
External environment temperature.
Air-conditioning system 100 is run and is in heating mode, and the first port 21 of commutation component 2 turns on the 3rd port 23,
Second port 22 turns on the 4th port 24.Direction as shown by the arrows in Figure 1, compressor 1 is by refrigerant compression into high temperature height
The gas of pressure is simultaneously discharged by exhaust outlet 11, and refrigerant enters commutation component 2 by first port 21, and flows through commutation component successively
Enter in indoor heat exchanger 4 and exchanged heat after 2 the 3rd port 23, the first end 41 of indoor heat exchanger, to adjust Indoor Temperature
Degree；Because the first valve body 521 and the second valve body 522 are in open mode, the 3rd valve body 621 and the 4th valve body 622 extremely
Few one is closed, and refrigerant flows through the second valve body 522, first successively after being flowed out by the second end 42 of indoor heat exchanger
The valve body 521 of throttling arrangement 51 and first, first throttle device 51 can carry out reducing pressure by regulating flow to refrigerant, and then refrigerant is by room
Second end 32 of external heat exchanger, which is flow in outdoor heat exchanger 3, to be exchanged heat, and refrigerant flows out from the first end 31 of outdoor heat exchanger,
And by the second port 22 of commutation component 2 enter commutation component 2 in, and pass sequentially through the 4th port 24, gas returning port 12 returns
Into compressor 1.
When T=5 DEG C of the temperature detection result of temperature measuring equipment, controller receives the temperature detection result T of temperature measuring equipment, contrast
Temperature detection result T and air-conditioning system 100 start-up temperature T1, now startups of the temperature detection result T more than air-conditioning system 100
Temperature T1, the temperature of refrigerant and lubricating oil in first throttle device 51 is higher, and air-conditioning system 100 can be transported normally for a long time
OK；Outdoor environment temperature is reduced to 2 DEG C after 5 hours, T=2 DEG C of temperature detection result, and now temperature detection result T is equal to air-conditioning
The start-up temperature T1 of system 100, the temperature of refrigerant and lubricating oil in first throttle device 51 is relatively low, and controller starts timing
The run time of first valve body 521 and the second valve body 522.
When the Cumulative Elapsed Time t1 of the first valve body 521 and the second valve body 522 reaches 2 hours, the 3rd valve body 621 is opened
Still remained on the 4th valve body 622, the first valve body 521 of closing and the second valve body 522, now second throttling device 61
Reducing pressure by regulating flow can be carried out to the refrigerant in air-conditioning system 100, first throttle device 51 can not be to the system in air-conditioning system 100
Cryogen carries out reducing pressure by regulating flow, and the Cumulative Elapsed Time t1 of the first valve body 521 and the second valve body 522 is reset, meanwhile, controller
Reduced temperature testing result T and air-conditioning system 100 exit temperature T2.When temperature detection result T is more than moving back for air-conditioning system 100
When going out temperature T2, controller stops timing, and now the temperature of the refrigerant in second throttling device 61 and lubricating oil is higher, and second
Throttling arrangement 61 will not be blocked, and the state that the second orifice union 6 keeps current is run；When temperature detection result T be less than etc.
In air-conditioning system 100 when exiting temperature T2, the temperature of refrigerant and lubricating oil in second throttling device 61 is relatively low, controller
Start the run time of the valve body 621 of timing the 3rd and the 4th valve body 622.And between first throttle device 51 and indoor heat exchanger 4
Connection is kept, i.e. refrigerant in first throttle device 51 can be from the refrigerant heat absorption that indoor heat exchanger 4 flows out, to improve the
The temperature of the inner refrigerant of one throttling arrangement 51 and lubricating oil so that refrigerant and lubricating oil in first throttle device 51 can be certainly
Row thaws, and avoids blocking when switching to the operation of first throttle device 51 again.
When the Cumulative Elapsed Time t2 of the 3rd valve body 621 and the 4th valve body 622 reaches 2 hours, the first valve body 521 is opened
Still remained on the second valve body 522, the 3rd valve body 621 of closing and the 4th valve body 622, now first throttle device 51
Reducing pressure by regulating flow can be carried out to the refrigerant in air-conditioning system 100, second throttling device 61 can not be to the system in air-conditioning system 100
Cryogen carries out reducing pressure by regulating flow, and the Cumulative Elapsed Time t2 of the 3rd valve body 621 and the 4th valve body 622 is reset, meanwhile, controller
Reduced temperature testing result T and air-conditioning system 100 exit temperature T2.When temperature detection result T is more than moving back for air-conditioning system 100
When going out temperature T2, controller stops timing, and now the temperature of the refrigerant in first throttle device 51 and lubricating oil is higher, and first
Throttling arrangement 51 will not be blocked, and the state that first throttle component 5 keeps current is run；When temperature detection result T be less than etc.
In air-conditioning system 100 when exiting temperature T2, the temperature of refrigerant and lubricating oil in first throttle device 51 is relatively low, controller
Start the run time of timing the first valve body 521 and the second valve body 522, such cyclic switching.And second throttling device 61 and room
Connection, i.e., the refrigerant that the refrigerant in second throttling device 61 can flow out from indoor heat exchanger 4 are kept between interior heat exchanger 4
Heat absorption, to improve the temperature of the inner refrigerant of second throttling device 61 and lubricating oil so that the refrigerant in second throttling device 61
It can voluntarily be thawed with lubricating oil, avoid blocking when switching to the operation of second throttling device 61 again.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
- A kind of 1. air-conditioning system, it is characterised in that including：Compressor, the compressor have exhaust outlet and gas returning port；Commutate component, and the commutation component includes first port to the 4th port, the first port and the second port and One of conducting in 3rd port, the 4th port with it is another in the second port and the 3rd port Individual conducting, the first port are connected with the exhaust outlet, and the 4th port is connected with the gas returning port；Outdoor heat exchanger and indoor heat exchanger, the first end of the outdoor heat exchanger are connected with the second port, the interior The first end of heat exchanger is connected with the 3rd port；First throttle component and the second orifice union, the first throttle component and second orifice union are arranged in parallel in institute State between the second end of outdoor heat exchanger and the second end of the indoor heat exchanger, the first throttle component includes being arranged in series First throttle device and the first valve component, second orifice union includes the second throttling device and second that is arranged in series Valve component, wherein, control first valve component and second valve component switching to be opened so that the first segment One of them in stream device and the second throttling device plays reducing pressure by regulating flow effect.
- 2. air-conditioning system according to claim 1, it is characterised in that first valve component includes the first valve body, institute The first end that the first valve body is stated with the first throttle device is connected.
- 3. air-conditioning system according to claim 2, it is characterised in that first valve component further comprises the second valve Body, second valve body are connected with the second end of the first throttle device.
- 4. air-conditioning system according to claim 1, it is characterised in that second valve component includes the 3rd valve body, institute The 3rd valve body is stated with the first end of the second throttling device to be connected.
- 5. air-conditioning system according to claim 4, it is characterised in that second valve component further comprises the 4th valve Body, the 4th valve body are connected with the second end of the second throttling device.
- 6. a kind of control method of air-conditioning system, it is characterised in that the air-conditioning system is according to any one of claim 1-5 Described air-conditioning system, the air-conditioning system also include the temperature measuring equipment and controller being connected with each other, and the temperature measuring equipment is used for The temperature of outdoor environment temperature or the outdoor heat exchanger is detected, the control method includes：Step S1：Open first valve component, close second valve component, the air-conditioning system normal operation；Step S2：The controller receives the temperature detection result T of the temperature measuring equipment, contrast the temperature detection result T and The start-up temperature T1 of the air-conditioning system,When the temperature detection result T is more than the start-up temperature T1 of the air-conditioning system, the air-conditioning system keeps normal fortune OK,When the temperature detection result T is less than or equal to the start-up temperature T1 of the air-conditioning system, the controller starts timing The run time of first valve component；Step S3：When the Cumulative Elapsed Time t1 of first valve component reaches the switching time t of the air-conditioning system, beat Open second valve component, close first valve component, and by the Cumulative Elapsed Time t1 of first valve component Clearing, the controller contrast temperature detection result T and the air-conditioning system exit temperature T2,When the temperature detection result T is more than when exiting temperature T2 of the air-conditioning system, the controller stops timing,When the temperature detection result T is less than or equal to when exiting temperature T2 of the air-conditioning system, the controller starts timing The run time of second valve component；Step S4：When the Cumulative Elapsed Time t2 of second valve component reaches the switching time t of the air-conditioning system, beat Open first valve component, close second valve component, and by the Cumulative Elapsed Time t2 of second valve component Clearing, the controller contrast temperature detection result T and the air-conditioning system exit temperature T2,When the temperature detection result T is more than when exiting temperature T2 of the air-conditioning system, the controller stops timing,When the temperature detection result T is less than or equal to when exiting temperature T2 of the air-conditioning system, the controller starts timing The run time of first valve component, and return to step S3.
- 7. the control method of air-conditioning system according to claim 6, it is characterised in that first valve component includes the One valve body and the second valve body, first valve body are connected with the first end of the first throttle device, second valve body and institute The second end for stating first throttle device is connected；When the indoor heat exchanger is in refrigeration mode or dehumidification mode, refrigerant flows to described second by first valve body Valve body, in step s3, second valve body is at least closed when closing first valve component,When the indoor heat exchanger is in heating mode, refrigerant flows to first valve body by second valve body, in step In rapid S3, first valve body is at least closed when closing first valve component.
- 8. the control method of air-conditioning system according to claim 6, it is characterised in that second valve component includes the Three valve bodies and the 4th valve body, the 3rd valve body are connected with the first end of the second throttling device, the 4th valve body and institute The second end for stating second throttling device is connected；When the indoor heat exchanger is in refrigeration mode or dehumidification mode, refrigerant flows to the described 4th by the 3rd valve body Valve body, in step s 4, the 4th valve body is at least closed when closing second valve component,When the indoor heat exchanger is in heating mode, refrigerant flows to the 3rd valve body by the 4th valve body, in step In rapid S4, the 3rd valve body is at least closed when closing second valve component.
- 9. the control method of air-conditioning system according to claim 6, it is characterised in that when the air-conditioning system is by heating mould Formula switches to defrosting mode and when switching back into heating mode after defrosting terminates, and the first valve body group is controlled after the scheduled time Part and the second valve component switchover operation.
- 10. the control method of air-conditioning system according to claim 6, it is characterised in that the temperature measuring equipment passes for temperature Sensor.
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| CN114061125A (en) * | 2020-07-30 | 2022-02-18 | 广东美的暖通设备有限公司 | Control method and control device of air conditioning system, controller and air conditioning system |
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| CN107504708B (en) | 2019-12-27 |
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