CN106482378A - Air conditioning system and its control method - Google Patents
Air conditioning system and its control method Download PDFInfo
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- CN106482378A CN106482378A CN201610910821.8A CN201610910821A CN106482378A CN 106482378 A CN106482378 A CN 106482378A CN 201610910821 A CN201610910821 A CN 201610910821A CN 106482378 A CN106482378 A CN 106482378A
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- Prior art keywords
- interface
- flow path
- heat exchanger
- conditioning system
- air conditioning
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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
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0403—Refrigeration circuit bypassing means for the condenser
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/05—Compression system with heat exchange between particular parts of the system
- F25B2400/054—Compression system with heat exchange between particular parts of the system between the suction tube of the compressor and another part of the cycle
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a kind of air conditioning system and its control method, described air conditioning system includes：Have the compressor of inlet and outlet, commutation assembly, First Heat Exchanger, the second heat exchanger, throttling arrangement, can the first flow path of break-make and second flow path, commutation assembly includes first to fourth interface, and first interface is connected with outlet, and the 3rd interface is connected with import；The first end of First Heat Exchanger is connected with second interface；The first end of the second heat exchanger is connected with the 4th interface；Throttling arrangement is located between the second end of First Heat Exchanger and the second end of the second heat exchanger；The first end of first flow path is connected between the import of compressor and first interface and the second end is connected between the second end of First Heat Exchanger and throttling arrangement；The first end of second flow path is connected between the import of compressor and first interface and the second end is connected between the second end of the second heat exchanger and throttling arrangement.According to the air conditioning system of the present invention, remain in the presence of a harsh environment normally run.
Description
Technical field
The present invention relates to art of refrigeration units, especially relate to a kind of air conditioning system and its control method.
Background technology
In correlation technique, under rugged environment, when such as outdoor environment temperature is higher than 60 DEG C, system opened by air-conditioner to air-conditioner
Chill formula, can be because compressor top cover temperature be too high, and the reason such as automatically controlled temperature exceeding standard is protected, and leads to air-conditioner normal
Run, when serious, even the automatically controlled case assembly of compressor, air-conditioner outdoor unit can be caused to burn；When outdoor environment temperature be less than-
When 20 DEG C, the condenser of air-conditioner outdoor unit usually cannot ensure heat exchange because frosting is excessive, thus leading in air conditioner chamber
The heating effect of machine is inconspicuous.However, often in these extreme environments, we but to maintain in room with greater need for air-conditioner
Temperature, thereby ensure that air-conditioner normal operation in extremely rugged environment is necessary.
In correlation technique, former Normal practice is to arrange temperature sensor in the air vent of compressor, when compressor
When delivery temperature exceedes a certain threshold value, the direct stoppage protection of compressor, to prevent it from burning.However, this protective measure is brought
The drawbacks of be that air-conditioner cannot normally run, impact user use.
Content of the invention
It is contemplated that at least solving one of technical problem present in prior art.For this reason, one object of the present invention
It is to propose a kind of air conditioning system it is ensured that air conditioning system remains to normally run in the presence of a harsh environment.
Further object is that proposing a kind of control method of above-mentioned air conditioning system.
Air conditioning system according to a first aspect of the present invention, including：Compressor, described compressor has inlet and outlet；Change
To assembly, described commutation assembly includes first to fourth interface, and one of in described first interface and the 3rd interface is with the
Two interfaces conducting, in described first interface and the 3rd interface another with described 4th interface conducting, described first interface with
Described outlet is connected, and described 3rd interface is connected with described import；First Heat Exchanger, the first end of described First Heat Exchanger and institute
State second interface to be connected；Second heat exchanger, the first end of described second heat exchanger is connected with described 4th interface；Throttling arrangement,
Described throttling arrangement is located between the second end of described First Heat Exchanger and the second end of described second heat exchanger；Can break-make
One stream, the first end of described first flow path is connected between the described import of described compressor and described first interface, described
Second end of first flow path is connected between described second end of described First Heat Exchanger and described throttling arrangement；Can break-make
Two streams, the first end of described second flow path is connected between the described import of described compressor and described first interface, described
Second end of second flow path is connected between described second end of described second heat exchanger and described throttling arrangement.
According to the air conditioning system of the present invention, by setting can the first flow path of break-make and second flow path it is ensured that air-conditioning
System remains to normally run in the presence of a harsh environment.
According to some embodiments of the present invention, described the of the described first end of described first flow path and described second flow path
One end shares a pipeline, the first end of described pipeline be connected to the described import of described compressor and described first interface it
Between, the second end of described pipeline is connected with first outlet pipeline and second outlet pipeline, the free end of described first outlet pipeline
It is connected between described second end of described First Heat Exchanger and described throttling arrangement, the free end of described second outlet pipeline is even
It is connected between described second end of described second heat exchanger and described throttling arrangement, wherein said first outlet pipeline is provided with
One stop valve, described second outlet pipeline is provided with the second stop valve.
According to some embodiments of the present invention, described throttling arrangement is electric expansion valve, capillary tube or capillary wick.
According to some embodiments of the present invention, described commutation assembly is cross valve.
According to some embodiments of the present invention, the entrance of described compressor is provided with reservoir.
The control method of air conditioning system according to a second aspect of the present invention, described air conditioning system is according to the present invention above-mentioned
The air conditioning system of one side, described control method comprises the following steps：
When described air conditioning system refrigerating operaton,
Detection outdoor environment temperature T1；
As described outdoor environment temperature T1During less than the first temperature predetermined threshold, control described first interface and described second
Interface conducting and described 3rd interface and described 4th interface conducting, and control described first flow path and described second flow path all disconnected
Open；
As described outdoor environment temperature T1During more than or equal to described first temperature predetermined threshold, control described first interface with
The conducting of described second interface and described 3rd interface and described 4th interface conducting, control described first flow path conducting and described the
Two streams disconnect；
When described air conditioning system heating operation,
Detection outdoor environment temperature T2；
As described outdoor environment temperature T2During more than second temperature predetermined threshold, control described first interface and the described 4th
Interface conducting and described second interface and described 3rd interface conducting, and control described first flow path and described second flow path all disconnected
Open；
As described outdoor environment temperature T2During less than or equal to described second temperature predetermined threshold, control described first interface with
Described 4th interface conducting and described second interface and described 3rd interface conducting, control the conducting of described second flow path and described the
One stream disconnects.
According to some embodiments of the present invention, the span of described first temperature predetermined threshold is 50 DEG C～60 DEG C.
According to some embodiments of the present invention, as described outdoor environment temperature T2During less than the 3rd temperature predetermined threshold, control
Make described first interface with described 4th interface conducting and described second interface is turned on described 3rd interface, control described second
Stream turned on once every first scheduled time, each conduction first predetermined hold-time, controlled described first flow path to break
Open；
As described outdoor environment temperature T2More than or equal to described 3rd temperature predetermined threshold, it is less than or equal to described second temperature
During predetermined threshold, control described first interface with described 4th interface conducting and described second interface is led with described 3rd interface
Logical, control described second flow path to turn on once every second scheduled time, each conduction second predetermined hold-time, control
Described first flow path disconnects, and wherein said 3rd temperature predetermined threshold is less than described second temperature predetermined threshold, and described first is pre-
Fix time less than described second scheduled time.
Alternatively, the span of described second temperature predetermined threshold is 0 DEG C～-4 DEG C, described 3rd temperature predetermined threshold
Span be -18 DEG C～-22 DEG C.
Alternatively, the span of described first scheduled time is 25 minutes～35 minutes, and described first continues pre- timing
Between span be 9 minutes～11 minutes；The span of described second scheduled time is 45 minutes～55 minutes, described the
The span of two predetermined hold-time is 9 minutes～11 minutes.
The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below
Substantially and easy to understand, wherein：
Fig. 1 is the schematic diagram of air conditioning system according to embodiments of the present invention.
Reference：
100：Air conditioning system；
1：Compressor；11：Import；12：Outlet；13：Reservoir；
2：Commutation assembly；21：First interface；22：Second interface；
23：3rd interface；24：4th interface；
3：First Heat Exchanger；4：Second heat exchanger；
5：Throttling arrangement；6：Pipeline；
71：First outlet pipeline；711：First stop valve；
72：Second outlet pipeline；721：Second stop valve.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has 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 describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ", " axle
To ", " radially ", the orientation of the instruction such as " circumferential " or position relationship be based on orientation shown in the drawings or position relationship, be only for
It is easy to describe the present invention and simplifies description, rather than the device of instruction or hint indication or element must have a specific side
Position, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In describing the invention, unless otherwise stated, " multiple " are meant that two
Individual or two or more.
In describing the invention, it should be noted that 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 is integrally connected；Can
To be to be mechanically connected or electrical connection；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Below with reference to Fig. 1, air conditioning system 100 according to embodiments of the present invention is described.Air conditioning system 100 can be split type
Air-conditioner.In the application explained below, with air conditioning system 100 can as detachable air conditioner as a example illustrate.Certainly,
It will be understood to those skilled in the art that air conditioning system 100 can also be other types of air conditioning system 100.
As shown in figure 1, the air conditioning system 100 such as detachable air conditioner of embodiment according to a first aspect of the present invention, including
Compressor 1, commutation assembly 2, First Heat Exchanger 3, the second heat exchanger 4, throttling arrangement 5, can the first flow path of break-make and can leading to
Disconnected second flow path.
Compressor 1 has import 11 and outlet 12.The cold-producing medium to be compressed of low-temp low-pressure enters into compression by import 11
In machine 1, discharge from outlet 12 after compressor 1 is compressed into the cold-producing medium of High Temperature High Pressure.Alternatively, compressor 1 is rotary
Compressor 1, but not limited to this.Further, reservoir 13 can be provided with, to prevent liquid refrigeration at the import 11 of compressor 1
Agent enters in compressor 1 and produces liquid hammer.
Commutation assembly 2 makes air conditioning system 100 have refrigeration simultaneously and heat two kinds of functions.Specifically, commutation assembly 2 includes
First interface 21, second interface 22, the 3rd interface 23 and the 4th interface 24, wherein in first interface 21 and the 3rd interface 23
Individual turn on second interface 22, another in first interface 21 and the 3rd interface 23 is turned on the 4th interface 24.That is,
When first interface 21 is turned on second interface 22, the 3rd interface 23 is turned on the 4th interface 24, and now air conditioning system 100 is permissible
Refrigerating operaton；When first interface 21 is turned on the 4th interface 24, the 3rd interface 23 is turned on second interface 22, now air-conditioning system
System 100 can be with heating operation.First interface 21 is connected with the outlet 12 of compressor 1, the import 11 of the 3rd interface 23 and compressor 1
It is connected.Alternatively, commutation assembly 2 is cross valve.It is understood that commutation assembly 2 can also be capable of for other above-mentioned
The part of conducting function.
The first end (for example, the upper end in Fig. 1) of First Heat Exchanger 3 is connected with the second interface 22 of commutation assembly 2, and second
The first end (for example, the left end in Fig. 1) of heat exchanger 4 is connected with the 4th interface 24 of commutation assembly 2.When air conditioning system 100 is
During detachable air conditioner, First Heat Exchanger 3 is outdoor heat exchanger (i.e. condenser), and the second heat exchanger 4 (steams for indoor heat exchanger
Send out device).
Throttling arrangement 5 is located at second end (for example, the lower end in Fig. 1) of First Heat Exchanger 3 and the second of the second heat exchanger 4
Between end (for example, the right-hand member in Fig. 1).Throttling arrangement 5 is used for the cold-producing medium flowing through it is played with the effect of reducing pressure by regulating flow.Optional
Ground, throttling arrangement 5 is electric expansion valve, capillary tube or capillary wick etc..
The first end (for example, the left end in Fig. 1) of first flow path is connected to the import 11 of compressor 1 and the assembly 2 that commutates
Between first interface 21, second end (for example, the right-hand member in Fig. 1) of first flow path is connected to above-mentioned the second of First Heat Exchanger 3
Between end and throttling arrangement 5.The first end (for example, the upper end in Fig. 1) of second flow path is connected to the import 11 of compressor 1 and changes
To between the first interface 21 of assembly 2, second end (for example, the lower end in Fig. 1) of second flow path is connected to the second heat exchanger 4
Between above-mentioned second end and throttling arrangement 5.
Wherein, first flow path and second flow path are conductings or separate, can according to the actual condition of air conditioning system 100 Lai
Concrete regulation, preferably to meet actual requirement.For example, when first flow path and second flow path are all separated, now air conditioning system
100 kind of refrigeration cycle that can carry out routine or heat circulation, that is, by compressor 1, commutation assembly 2, First Heat Exchanger 3, second change
Hot device 4 and the circulation stream of throttling arrangement 5 composition, the specific work process of this circulation stream is for those skilled in the art institute
Know, will not be described here.And when at least one of first flow path and second flow path turn on, from the outlet 12 of compressor 1
The cold-producing medium discharged divides two-way to flow：One tunnel flow direction commutation assembly 2, another road flows to above-mentioned in first flow path and second flow path
At least one, at this moment can ensure that air conditioning system 100 also can normally be run under extremely rugged environment.
Specifically, for example, when outdoor environment temperature high for example be higher than 60 DEG C when, for example split type sky of air conditioning system 100
Adjust device refrigerating operaton, the first interface 21 of commutation assembly 2 turns on second interface 22 and the 3rd interface 23 is led with the 4th interface 24
Logical, first flow path can be made simultaneously to turn on and so that second flow path is separated, thus, the high temperature discharged from the outlet 12 of compressor 1 is high
The cold-producing medium of pressure can be divided into two-way flowing, and a road cold-producing medium passes through to commutate the first interface 21 of assembly 2 and second interface 22 through the
One heat exchanger 3 condensation cooling, in addition a road cold-producing medium is without First Heat Exchanger 3 heat exchange, but by first flow path with above-mentioned
One road cold-producing medium enters throttling arrangement 5 reducing pressure by regulating flow after the mixing of the exit of First Heat Exchanger 3, subsequently into the second heat exchanger
4 evaporations, make room temperature reduce, and the cold-producing medium after heat exchange passes through to commutate the 4th interface 24 of assembly 2 and the 3rd interface 23 by pressing
The import 11 of contracting machine 1 is flowed back in compressor 1 and is compressed again, and the cold-producing medium after compression is discharged from the outlet 12 of compressor 1, such as
This moves in circles, to realize kind of refrigeration cycle.In the process, because an above-mentioned other road cold-producing medium is without First Heat Exchanger 3,
Thus the temperature of this road cold-producing medium is higher, thus improving the refrigerant temperature after throttling arrangement 5 throttling, and then the second heat exchange
The temperature of the inlet and outlet of device 4 all can raise, and the indoor set heat transfer intensity of detachable air conditioner diminishes, and heat exchange amount reduces, band
The inlet temperature of dynamic compressor 1 raises, and alleviates the load of the cylinder body of compressor 1, reduces the quantity of heat production of compressor 1, thus
Ensure that air conditioning system 100 can also even running in hot environment.
When extremely low such as less than -20 DEG C of outdoor environment temperature, air conditioning system 100 such as detachable air conditioner heats fortune
OK, the first interface 21 of commutation assembly 2 is turned on the 4th interface 24 and second interface 22 is turned on the 3rd interface 23, simultaneously permissible
So that second flow path is turned on and so that first flow path is separated, thus, the gas refrigeration of the High Temperature High Pressure discharged from the outlet 12 of compressor 1
Agent is divided into two-way：One tunnel, through commutating the first interface 21 of assembly 2 and the 4th interface 24 flows to the second heat exchanger 4, makes room heat up,
Second flow path is directly passed through with an above-mentioned road cold-producing medium in the exit of the second heat exchanger 4 in another road without the second heat exchanger 4
Throttling arrangement 5 reducing pressure by regulating flow is entered, the second interface 22 after First Heat Exchanger 3 heat exchange, through the assembly 2 that commutates after mixing
Flow to compressor 1 with the 3rd interface 23, send from the outlet 12 of compressor 1 again after being compressed in compressor 1, so circulate past
Multiple, to realize heating circulation.In the process, due to the cold-producing medium discharged from the outlet 12 of compressor 1, some does not enter
Enter the second heat exchanger 4 and be directly entered throttling arrangement 5, therefore improve the inlet temperature of First Heat Exchanger 3, be conducive to low temperature
The frost layer on First Heat Exchanger 3 surface in the off-premises station of detachable air conditioner under operating mode is melted, thus ensure that First Heat Exchanger 3
Heat transfer effect, improve the heating capacity of indoor set and the efficiency of air conditioning system 100.
And work as outdoor environment temperature be less than 60 DEG C, such as 37 DEG C, 42 DEG C when, air conditioning system 100 can carry out routine system
First flow path and second flow path now can all be disconnected by SAPMAC method, now complete from the cold-producing medium of outlet 12 discharge of compressor 1
The first interface 21 of portion's flow direction commutation assembly 2, and flow through First Heat Exchanger 3, throttling arrangement 5, the second heat exchanger 4 successively, and
It is back in compressor 11 by the import 11 of compressor 1 eventually and compressed again.When outdoor environment temperature is higher than -20 DEG C, example
During as 4 DEG C, what air conditioning system 100 can carry out routine heats circulation, now equally can will be equal to first flow path and second flow path
Disconnect, the cold-producing medium discharged from the outlet 12 of compressor 1 is all flowed to the first interfaces 21 of commutation assemblies 2, and flows through successively
Second heat exchanger 4, throttling arrangement 5, First Heat Exchanger 3, and be back in compressor 1 simultaneously eventually through the import 11 of compressor 1
Compressed again.
Thus, air conditioning system 100 such as detachable air conditioner according to embodiments of the present invention, by setting can break-make the
One stream and second flow path are it is ensured that air conditioning system 100 remains to normally run in the presence of a harsh environment.
Here, it should be noted that " 60 DEG C ", " -20 DEG C " of mentioning in this application etc. are merely illustrative, and not
It is understood that as limitation of the present invention.That is, the break-make situation of first flow path and second flow path can be according to real work
Situation is specifically arranged.For example, when outdoor environment temperature does not reach 60 DEG C, for example, 40 DEG C, 50 DEG C when it is also possible to make first flow path
Turn on and make second flow path to separate, to mitigate the load of compressor 1 cylinder body, reduce the quantity of heat production of compressor 1, thus ensureing to compress
The normal operation of machine 1, and extend the service life of compressor 1.And work as outdoor environment temperature and be higher than -20 DEG C, for example, -2
DEG C, -10 DEG C when it is also possible to so that second flow path is turned on and make first flow path separate, to mitigate the frosting situation of First Heat Exchanger 3,
Ensure its can normally heat exchange, make the heating effect of air conditioning system 100 good.
According to some alternative embodiments of the present invention, as shown in figure 1, the above-mentioned first end of first flow path and second flow path
Above-mentioned first end shares a pipeline 6, and the first end of this pipeline 6 is connected to the import 11 of compressor 1 and the first of commutation assembly 2
Between interface 21, the second end of this pipeline 6 is connected with first outlet pipeline 71 and second outlet pipeline 72, first outlet pipeline 71
Free end (for example, the right-hand member in Fig. 1) be connected between above-mentioned second end of First Heat Exchanger 3 and throttling arrangement 5, second goes out
The free end (for example, the lower end in Fig. 1) of mouthful pipeline 72 be connected to above-mentioned second end of the second heat exchanger 4 and throttling arrangement 5 it
Between, wherein first outlet pipeline 71 is provided with the first stop valve 711, and second outlet pipeline 72 is provided with the second stop valve 721.On
State pipeline 6 to keep connecting with first outlet pipeline 71 and second outlet pipeline 72 all the time, the first stop valve 711 and the second stop valve
721 are used for controlling the break-make of first outlet pipeline 71 and second outlet pipeline 72 respectively.
For example, when outdoor environment temperature high for example be higher than 60 DEG C when, air conditioning system 100 for example detachable air conditioner refrigeration
Run, the first interface 21 of commutation assembly 2 turns on second interface 22 and the 3rd interface 23 is turned on the 4th interface 24, may be used simultaneously
To open the first stop valve 711 and to close the second stop valve 721.Two can be divided from the cold-producing medium of compressor 1 High Temperature High Pressure out
Flow in road：One tunnel condenses cooling through First Heat Exchanger 3, is then passed through throttling arrangement 5 reducing pressure by regulating flow, finally enters the second heat exchange
Device 4 evaporation and heat-exchange, makes room temperature reduce；Above-mentioned pipeline 6 is then directly passed through after the first stop valve 711 in an other road,
Throttle through throttling arrangement 5, be changed into the cold-producing medium of high-temperature low-pressure, thus improving the inlet temperature of the second heat exchanger 4, Jin Erti
The high inlet temperature of compressor 1, alleviates the load of compressor 1 cylinder body, reduces the caloric value of compressor 1 it is ensured that air-conditioning
System 100 even running.
When extremely low such as less than -20 DEG C of outdoor environment temperature, air conditioning system 100 such as detachable air conditioner heats fortune
OK, the first interface 21 of commutation assembly 2 is turned on the 4th interface 24 and second interface 22 is turned on the 3rd interface 23, simultaneously permissible
Open the second stop valve 721 and close the first stop valve 711.From the gaseous refrigerant of compressor 1 High Temperature High Pressure out, a road
Flow through the second heat exchanger 4 heat exchange, another road high temperature and high pressure gaseous refrigerant then passes through above-mentioned pipeline 6 through the second stop valve 721
Afterwards, mix with the liquid refrigerant in the second heat exchanger 4 exit, flow through throttling arrangement 5, gas-liquid two-phase cold-producing medium afterwards flows through
First Heat Exchanger 3.Because now the inlet temperature of First Heat Exchanger 3 is complete compared to the first stop valve 711 and the second stop valve 721
Temperature during contract fully can significantly raise, and is thus advantageous to the frost on First Heat Exchanger 3 surface in off-premises station under low temperature environment
Melting layer, thus ensure that the heat transfer effect of First Heat Exchanger 3, improves the heating capacity of indoor set and the energy of air conditioning system 100
Effect.
And work as outdoor environment temperature be less than 60 DEG C, such as 37 DEG C, 42 DEG C when, air conditioning system 100 can carry out routine system
First stop valve 711 and the second stop valve 721 now can be turned off, now discharge from the outlet 12 of compressor 1 by SAPMAC method
Cold-producing medium all flow to the first interface 21 of commutation assembly 2, and flow through First Heat Exchanger 3, throttling arrangement 5 successively, second change
Hot device 4, and be back in compressor 1 eventually through the import 11 of compressor 1 and compressed again.When outdoor environment temperature is high
In -20 DEG C, such as when 4 DEG C, air conditioning system 100 can carry out routine heat circulation, now equally can be by the first stop valve
711 and second stop valve 721 be turned off, the cold-producing medium discharged from the outlet 12 of compressor 1 is by the of whole flow direction commutation assemblies 2
One interface 21, and flow through the second heat exchanger 4, throttling arrangement 5, First Heat Exchanger 3, and the import eventually through compressor 1 successively
11 are back in compressor 1 and are compressed again.
Thus, by using the air conditioning system 100 according to the present invention, both having can guarantee that under normal temperature environment, air-conditioning system
System 100 can normally run, and can guarantee that in the presence of a harsh environment, by changing the first stop valve 711 and the second stop valve 721 again
Opening and closing, to ensure the stable operation of compressor 1, and then to guarantee that air conditioning system 100 can be held in very hot such as 60 DEG C environment above
Persistently heat in continuous refrigeration, extremely cold such as less than -20 DEG C of environment, improve the stability of air conditioning system 100, greatly increase
The range of air conditioning system 100.
It is, of course, understood that first flow path and second flow path can also be respectively adopted two independent pipeline 6 (figures
Not shown).
The control method of the air conditioning system 100 of embodiment according to a second aspect of the present invention, wherein, air conditioning system 100 is root
Air conditioning system 100 according to the present invention above-mentioned first aspect embodiment.The concrete structure of air conditioning system 100 and operation principle etc. are at this
It is described in detail in application above description, will not be described here.
Wherein, the control method of air conditioning system 100 comprises the following steps：
When air conditioning system 100 refrigerating operaton,
Detection outdoor environment temperature T1；
As outdoor environment temperature T1During less than the first temperature predetermined threshold, control the first interface 21 and the of commutation assembly 2
Two interfaces 22 turn on and the 3rd interface 23 is turned on the 4th interface 24, and control first flow path and second flow path all to disconnect (now
Air conditioning system 100 carries out the kind of refrigeration cycle of routine)；
As outdoor environment temperature T1During more than or equal to the first temperature predetermined threshold, control the first interface 21 of commutation assembly 2
Turn on second interface 22 and the 3rd interface 23 is turned on the 4th interface 24, control first flow path conducting and second flow path disconnects
(now, when first flow path turns on and second flow path disconnects, two can be divided into from the cold-producing medium of compressor 1 High Temperature High Pressure out
Flow in road, a road condenses cooling through First Heat Exchanger 3, is then passed through throttling arrangement 5 expenditure and pressure, finally enters the second heat exchange
Device 4 evaporation and heat-exchange, makes room temperature reduce；An other road is then without First Heat Exchanger 3, but is directly over pipeline 6 and
One stream, is changed into the cold-producing medium of cryogenic high pressure, thus, after improving throttling, throttling arrangement 5 goes out afterwards through throttling arrangement 5 throttling
Temperature at mouthful, and then the inlet temperature of the second heat exchanger 4 and outlet temperature all can raise, and makes the second heat exchanger 4 heat transfer intensity
Diminish, heat exchange amount reduces, drive the inlet temperature of compressor 1 to raise, alleviate the load of compressor 1 cylinder body, reduce compression
The quantity of heat production of machine 1 is it is ensured that air conditioning system 100 even running in hot environment).
When air conditioning system 100 heating operation,
Detection outdoor environment temperature T2；
As outdoor environment temperature T2During more than second temperature predetermined threshold, control the first interface 21 and the of commutation assembly 2
Four interfaces 24 turn on and second interface 22 is turned on the 3rd interface 23, and control first flow path and second flow path all to disconnect (now
Air conditioning system 100 carry out routine heat circulation)；
As outdoor environment temperature T2During less than or equal to second temperature predetermined threshold, control the first interface 21 of commutation assembly 2
Turn on the 4th interface 24 and second interface 22 is turned on the 3rd interface 23, control second flow path conducting and first flow path disconnects
(now, when second flow path turns on and first flow path disconnects, from compressor 1 high-temperature high-pressure gas refrigerant out, a road stream
Through the second heat exchanger 4 heat exchange, another road high-temperature high-pressure gas refrigerant after above-mentioned pipeline 6 and second flow path with an above-mentioned road
Flow to throttling arrangement 5 after mixing with the cold-producing medium after the second heat exchanger 4 heat exchange, then flow through First Heat Exchanger 3.With respect to first
Stream and second flow path all disconnect, and cold-producing medium now is directly entered because some does not enter into the second heat exchanger 4
Throttling arrangement 5, therefore improves the inlet temperature of First Heat Exchanger 3, is conducive to the First Heat Exchanger 3 of off-premises station under worst cold case
The frost layer on surface is melted, thus ensure that the heat transfer effect of First Heat Exchanger 3, improves heating capacity and the air conditioning system of indoor set
100 efficiency).
Here, it should be noted that either outdoor environment temperature T1More than or equal to the first temperature predetermined threshold or room
External environment temperature T2Less than or equal to second temperature predetermined threshold, the break-make of first flow path and second flow path can be according to practical situation
To determine.
The control method of air conditioning system 100 according to embodiments of the present invention, is ensureing the same of normal refrigeration or heating operation
When, it is also ensured that the stable operation of compressor 1 under exceedingly odious operating mode, and then ensure that air conditioning system 100 can be
Persistently refrigeration the environment in extremely low such as less than -20 DEG C of outdoor temperature under the environment that high such as more than 60 DEG C of outdoor temperature
Under persistently heat, improve the stability of air conditioning system 100, substantially increase the range of air conditioning system 100.
According to some alternative embodiments of the present invention, the span of the first temperature predetermined threshold is 50 DEG C～60 DEG C (bags
Include endpoint value).The concrete numerical value of the first temperature predetermined threshold specifically can be arranged according to practical situation, preferably to meet reality
Require.For example, the first temperature predetermined threshold is 55 DEG C.
According to some embodiments of the present invention, as outdoor environment temperature T2During less than the 3rd temperature predetermined threshold, control the
One interface 21 is turned on the 4th interface 24 and second interface 22 is turned on the 3rd interface 23, controls second flow path predetermined every first
Time turns on once, each conduction first predetermined hold-time, controls first flow path to disconnect；As outdoor environment temperature T2Greatly
In equal to the 3rd temperature predetermined threshold, less than or equal to second temperature predetermined threshold when, control first interface 21 and the 4th interface 24
Turn on and second interface 22 is turned on the 3rd interface 23, control second flow path to turn on once every second scheduled time, lead every time
Lead to and continue the second predetermined hold-time, control first flow path to disconnect, the wherein the 3rd temperature predetermined threshold is less than second temperature and makes a reservation for
Threshold value, first scheduled time was less than for second scheduled time.Thus, by periodically open the second stop valve 721 be beneficial to low
Under warm operating mode, the frost layer on First Heat Exchanger 3 surface of off-premises station is melted it is ensured that the heat transfer effect of First Heat Exchanger 3, Er Qie
When second stop valve 721 is closed, the efficiency of compressor 1 can be improved, and then the efficiency of air conditioning system 100 can be lifted.And,
By Further Division is carried out to the outdoor environment temperature under worst cold case, and different controlling parties are taken to air conditioning system 100
Formula, specifically, as outdoor environment temperature T2When extremely low such as less than -20 DEG C, shortened for first scheduled time, the can be prevented effectively from
One heat exchanger 3 surface frosting, thus ensure that the heat transfer effect of First Heat Exchanger 3, improves the efficiency of air conditioning system 100.
Wherein, the first predetermined hold-time and the second predetermined hold-time can identical it is also possible to different.For example, in order to
Lift defrost effect further, as outdoor environment temperature T2When extremely low such as less than -20 DEG C, can be with proper extension second stop valve
721 service time (extending for first scheduled time).
Alternatively, the span of second temperature predetermined threshold is 0 DEG C～-4 DEG C (inclusion endpoint value), and the 3rd temperature makes a reservation for
The span of threshold value is -18 DEG C～-22 DEG C (inclusion endpoint value).Second temperature predetermined threshold and the 3rd temperature predetermined threshold
Concrete numerical value specifically can be arranged according to practical situation, preferably to meet actual requirement.For example, second temperature predetermined threshold is
0 DEG C, the 3rd temperature predetermined threshold is -20 DEG C.
Alternatively, the span of first scheduled time be 25 minutes～35 minutes (inclusion endpoint value), first continue pre-
The span fixed time is 9 minutes～11 minutes (inclusion endpoint value)；The span of second scheduled time be 45 minutes～
55 minutes (inclusion endpoint value), the span of the second predetermined hold-time is 9 minutes～11 minutes (inclusion endpoint value).Example
As first scheduled time was 30 minutes, and the first predetermined hold-time is 10 minutes, and second scheduled time was 50 minutes, and second holds
The continuous scheduled time is 10 minutes.It is understood that first scheduled time, the first predetermined hold-time, second scheduled time with
And second the concrete numerical value of predetermined hold-time specifically can be arranged according to practical situation, preferably to meet actual requirement.
According to a specific embodiment of the present invention, with the first temperature predetermined threshold be 55 DEG C, second temperature predetermined threshold
For 0 DEG C, the 3rd temperature predetermined threshold be -20 DEG C, first scheduled time be 30 minutes, the first predetermined hold-time be 10 minutes,
Second scheduled time be 50 minutes, the second predetermined hold-time be 10 minutes as a example illustrate.It should be noted that in this reality
Apply the said temperature value (the first temperature predetermined threshold is to the 3rd temperature predetermined threshold) being related in example or time (the first pre- timing
Between, the first predetermined hold-time, second scheduled time and the second predetermined hold-time) concrete numerical value be not limited in embodiment
The concrete numerical value being previously mentioned, it specifically can be arranged according to actual requirement, preferably to meet actual requirement.
As shown in figure 1, the refrigeration control method of air conditioning system 100 is as follows：
Air conditioning system 100, in refrigerating operaton, detects outdoor environment temperature T1；
As outdoor environment temperature T1During 55 DEG C of ＜, control the first interface 21 of commutation assembly 2 to turn on second interface 22 and
4th interface 24 and the 3rd interface 23 turn on, and (the first stop valve 711 and the second stop valve 721 exist to carry out conventional kind of refrigeration cycle
It is closed under normal circumstances)；
When outdoor environment temperature meets 55 DEG C≤T1When, control the first interface 21 of commutation assembly 2 to lead with second interface 22
Logical and the 4th interface 24 is turned on the 3rd interface 23, and opens the first stop valve 711, and the now outlet 12 of compressor 1 is discharged
High-temperature high-pressure refrigerant can divide two-way to flow, and lead up to commutation assembly 2 and condense cooling through First Heat Exchanger 3, be then passed through saving
Stream device 5 expenditure and pressure, finally enters the second heat exchanger 4 and evaporates, and so that room temperature is reduced；An other road is without the first heat exchange
The heat exchange of device 3, but throttling arrangement 5 import is reached by the first stop valve 711, above-mentioned with First Heat Exchanger 3 exit
The high pressure low temperature cold-producing medium on road is mixed.With the first stop valve 711 and the second stop valve 721 be turned off when situation compared with,
Now the opening of the first stop valve 711, improves the inlet and outlet of throttling arrangement 5, and then the import of the second heat exchanger 4
All can raise with outlet temperature, indoor set heat transfer intensity diminishes, heat exchange amount reduces, drive the inlet temperature of compressor 1 to raise, subtract
The light load of compressor 1 cylinder body, reduces the caloric value of compressor 1 it is ensured that air conditioning system 100 is steadily transported in hot environment
OK.
The heat-production control method of air conditioning system 100 is as follows：
Air conditioning system 100, in heating operation, detects outdoor environment temperature T2；
As outdoor environment temperature T2During 0 DEG C of ＞, control the first interface 21 of commutation assembly 2 and the 4th interface 24 turns on and the
Two interfaces 22 and the 3rd interface 23 turn on, and (the first stop valve 711 and the second stop valve 721 are logical to carry out the conventional circulation that heats
It is closed in the case of often)；
When outdoor environment temperature meets -20 DEG C≤T2When≤0 DEG C, the first interface 21 of commutation assembly 2 is controlled to connect with second
Mouth 22 turns on and the 4th interface 24 is turned on the 3rd interface 23, and the second stop valve 721 was opened once every 50 minutes simultaneously, open-minded
Once continue 10 minutes.From compressor 1 high-temperature high-pressure gas refrigerant out, a road flows through the second heat exchanger 4, another road rank
Flow through the second stop valve 721, the refrigeration of the gas refrigerant of High Temperature High Pressure and the second heat exchanger 4 cryogenic high pressure out to section property
Agent is mixed, then flow throttling device 5.Feelings when being turned off with respect to the first stop valve 711 and the second stop valve 721
Condition, cold-producing medium now has been directly entered throttling arrangement 5 because some does not enter into the second heat exchanger 4, is therefore lifted
The inlet temperature of First Heat Exchanger 3, is conducive to the frost layer on First Heat Exchanger 3 surface of off-premises station under worst cold case to melt, from
And ensure that the heat transfer effect of the First Heat Exchanger 3 of off-premises station, improve the heating capacity of indoor set and the energy of air conditioning system 100
Effect.
As outdoor environment temperature T2When ＜ -20 DEG C, control the first interface 21 of commutation assembly 2 to turn on second interface 22 and
4th interface 24 and the 3rd interface 23 turn on, and the second stop valve 721 was opened once every 30 minutes simultaneously, opens and once continues 10
Minute.Its effect is similar with above-mentioned operating mode with purpose.First Heat Exchanger 3 defrosts in time, to ensure the second heat exchange of indoor set
The heating effect of device 4.
In the description of this specification, reference term " embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features, the knot describing with reference to this embodiment or example
Structure, material or feature are contained at least one embodiment or the example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can combine in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
Multiple changes, modification, replacement and modification can be carried out to these embodiments in the case of the principle of the disengaging present invention and objective, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
1. a kind of air conditioning system is it is characterised in that include：
Compressor, described compressor has inlet and outlet；
Commutation assembly, described commutation assembly includes first to fourth interface, wherein in described first interface and the 3rd interface
Individual and second interface turns on, and another in described first interface and the 3rd interface is turned on described 4th interface, and described first
Interface is connected with described outlet, and described 3rd interface is connected with described import；
First Heat Exchanger, the first end of described First Heat Exchanger is connected with described second interface；
Second heat exchanger, the first end of described second heat exchanger is connected with described 4th interface；
Throttling arrangement, described throttling arrangement be located at the second end of described First Heat Exchanger and described second heat exchanger the second end it
Between；
Can break-make first flow path, the first end of described first flow path is connected to the described import and described first of described compressor
Between interface, the second end of described first flow path be connected to described second end of described First Heat Exchanger and described throttling arrangement it
Between；
Can break-make second flow path, the first end of described second flow path is connected to the described import and described first of described compressor
Between interface, the second end of described second flow path be connected to described second end of described second heat exchanger and described throttling arrangement it
Between.
2. air conditioning system according to claim 1 is it is characterised in that the described first end of described first flow path and described
The described first end of two streams shares a pipeline, and the first end of described pipeline is connected to described import and the institute of described compressor
State between first interface, the second end of described pipeline is connected with first outlet pipeline and second outlet pipeline, described first outlet
The free end of pipeline is connected between described second end of described First Heat Exchanger and described throttling arrangement, described second outlet pipe
The free end on road is connected between described second end of described second heat exchanger and described throttling arrangement, wherein said first outlet
Pipeline is provided with the first stop valve, and described second outlet pipeline is provided with the second stop valve.
3. air conditioning system according to claim 1 is it is characterised in that described throttling arrangement is electric expansion valve, capillary tube
Or capillary wick.
4. air conditioning system according to claim 1 is it is characterised in that described commutation assembly is cross valve.
5. air conditioning system according to claim 1 is it is characterised in that the entrance of described compressor is provided with reservoir.
6. a kind of control method of the air conditioning system according to any one of claim 1-5 is it is characterised in that include following
Step：
When described air conditioning system refrigerating operaton,
Detection outdoor environment temperature T1；
As described outdoor environment temperature T1During less than the first temperature predetermined threshold, control described first interface and described second interface
Conducting and described 3rd interface and described 4th interface conducting, and control described first flow path and described second flow path all to disconnect；
As described outdoor environment temperature T1During more than or equal to described first temperature predetermined threshold, control described first interface with described
Second interface conducting and described 3rd interface and described 4th interface conducting, control described first flow path conducting and described second
Road disconnects；
When described air conditioning system heating operation,
Detection outdoor environment temperature T2；
As described outdoor environment temperature T2During more than second temperature predetermined threshold, control described first interface and described 4th interface
Conducting and described second interface and described 3rd interface conducting, and control described first flow path and described second flow path all to disconnect；
As described outdoor environment temperature T2During less than or equal to described second temperature predetermined threshold, control described first interface with described
4th interface conducting and described second interface and described 3rd interface conducting, control described second flow path to turn on and described first-class
Road disconnects.
7. the control method of air conditioning system according to claim 6 is it is characterised in that described first temperature predetermined threshold
Span is 50 DEG C～60 DEG C.
8. the control method of the air conditioning system according to claim 6 or 7 is it is characterised in that work as described outdoor environment temperature T2
During less than the 3rd temperature predetermined threshold, control described first interface with described 4th interface turn on and described second interface with described
3rd interface conducting, controls described second flow path to turn on once every first scheduled time, each conduction first continues pre-
Fix time, control described first flow path to disconnect；
As described outdoor environment temperature T2Make a reservation for more than or equal to described 3rd temperature predetermined threshold, less than or equal to described second temperature
During threshold value, control described first interface with described 4th interface conducting and described second interface and described 3rd interface conducting, control
Make described second flow path to turn on once every second scheduled time, each conduction second predetermined hold-time, control described
First flow path disconnects,
Wherein said 3rd temperature predetermined threshold is less than described second temperature predetermined threshold, and described first scheduled time is less than described
Second scheduled time.
9. the control method of air conditioning system according to claim 8 is it is characterised in that described second temperature predetermined threshold
Span is 0 DEG C～-4 DEG C, and the span of described 3rd temperature predetermined threshold is -18 DEG C～-22 DEG C.
10. the control method of air conditioning system according to claim 8 is it is characterised in that taking of described first scheduled time
Value scope is 25 minutes～35 minutes, and the span of described first predetermined hold-time is 9 minutes～11 minutes；
The span of described second scheduled time is 45 minutes～55 minutes, the span of described second predetermined hold-time
For 9 minutes～11 minutes.
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| CN201610910821.8A CN106482378A (en) | 2016-10-19 | 2016-10-19 | Air conditioning system and its control method |
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| CN201610910821.8A CN106482378A (en) | 2016-10-19 | 2016-10-19 | Air conditioning system and its control method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2750229Y (en) * | 2004-07-12 | 2006-01-04 | 劳特斯空调(江苏)有限公司 | Air-conditioning system self-adapting apparatus |
| CN201251315Y (en) * | 2008-08-01 | 2009-06-03 | 广东美的电器股份有限公司 | Air conditioner capable of system protection under high temperature condition |
| JP2013053818A (en) * | 2011-09-05 | 2013-03-21 | Panasonic Corp | Air conditioner |
| CN105444448A (en) * | 2015-12-23 | 2016-03-30 | 广东美的暖通设备有限公司 | Refrigeration system and control method thereof |
| CN105570988A (en) * | 2015-12-31 | 2016-05-11 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN206160576U (en) * | 2016-10-19 | 2017-05-10 | 广东美的制冷设备有限公司 | Air conditioning system |
-
2016
- 2016-10-19 CN CN201610910821.8A patent/CN106482378A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2750229Y (en) * | 2004-07-12 | 2006-01-04 | 劳特斯空调(江苏)有限公司 | Air-conditioning system self-adapting apparatus |
| CN201251315Y (en) * | 2008-08-01 | 2009-06-03 | 广东美的电器股份有限公司 | Air conditioner capable of system protection under high temperature condition |
| JP2013053818A (en) * | 2011-09-05 | 2013-03-21 | Panasonic Corp | Air conditioner |
| CN105444448A (en) * | 2015-12-23 | 2016-03-30 | 广东美的暖通设备有限公司 | Refrigeration system and control method thereof |
| CN105570988A (en) * | 2015-12-31 | 2016-05-11 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN206160576U (en) * | 2016-10-19 | 2017-05-10 | 广东美的制冷设备有限公司 | Air conditioning system |
Non-Patent Citations (1)
| Title |
|---|
| 刘学志: "《现代汽车空调器原理检测维修技术》", 30 June 1995, 黄河出版社 * |
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