CN206291521U - Air-conditioning system - Google Patents
Air-conditioning system Download PDFInfo
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- CN206291521U CN206291521U CN201620723190.4U CN201620723190U CN206291521U CN 206291521 U CN206291521 U CN 206291521U CN 201620723190 U CN201620723190 U CN 201620723190U CN 206291521 U CN206291521 U CN 206291521U
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Abstract
The utility model discloses a kind of air-conditioning system, including be sequentially communicated and formed coolant loop twin-tub independent compression compressor, reversing unit, outdoor heat exchanger, first throttle unit, gas-liquid separator, the second throttling unit, indoor heat exchanger；The compressor is respectively arranged with the first gas returning port and the second gas returning port.Reversing unit is filled by the first liquid storage and connected with first gas returning port, and the gas vent of the gas-liquid separator is connected with second gas returning port；The setting of the coolant throttle degree of first throttle element and the second restricting element causes that the span of gas outlet temperature Tm=(T2+T3)/2+ △ t, the △ t of the gas-liquid separator is 2 DEG C~4 DEG C；Wherein, T2 is the coil temperature of indoor heat exchanger under refrigeration mode, and T3 is the outlet temperature of outdoor heat exchanger under refrigeration mode.The utility model causes that air-conditioning system operates in high energy efficiency state.
Description
Technical field
The utility model is related to refrigeration technology field, more particularly to a kind of air-conditioning system.
Background technology
Current air-conditioning refrigeration system after throttling and into the gaseous refrigerant before evaporator to not optimizing circulation
Design, causes gaseous refrigerant to influence evaporator heat exchange performance, and increases compressor compresses power consumption, so as to have influence on air-conditioner
Efficiency level.Air injection enthalpy-increasing and Two-stage Compression technology can improve heating capacity water of the air-conditioning system under low temperature and ultralow temperature
It is flat, but for the operating mode that air-conditioning is commonly used, efficiency lifting is very limited.
For example according to the specified refrigerating/heating in GB/T 7725-2004 room air conditioners, middle refrigerating/heating work
Under under condition, the air-conditioning efficiency situation operated under specified refrigerating/heating, middle refrigerating/heating operating mode of existing air-conditioning system
It is as follows：
| Specified refrigeration | Centre refrigeration | It is specified to heat | Centre heats | |
| Ability | 3400.4 | 1650 | 4280 | 2193 |
| Power | 828.3 | 299 | 1263 | 436 |
| The coefficient of performance | 4.11 | 5.52 | 3.39 | 5.03 |
Utility model content
Main purpose of the present utility model is to provide a kind of air-conditioning system, it is intended to improve the efficiency of air-conditioning system.
To achieve the above object, the utility model proposes a kind of air-conditioning system, including twin-tub independent compression compressor,
Reversing unit, outdoor heat exchanger, first throttle unit, gas-liquid separator, the second throttling unit, indoor heat exchanger and the first liquid storage
Fill；Wherein, the compressor is respectively arranged with the first gas returning port and the second gas returning port, the first cylinder of the first gas returning port connection with
The delivery space ratio range of the second cylinder of the second gas returning port connection is 1%~10%；
The reversing unit includes the first valve port to the 4th valve port, in first valve port and the second valve port and the 3rd valve port
One of connection, the 4th valve port connects with another in second valve port and the 3rd valve port, described
One valve port is connected with the exhaust outlet, and the 4th valve port is connected with first fluid reservoir；
The first end of the outdoor heat exchanger is connected with second valve port, the first end of the indoor heat exchanger with it is described
3rd valve port is connected；
The gas-liquid separator includes gas vent, first interface and second interface, the gas vent and described second
Gas returning port is connected, and the first interface is connected with the second end of the outdoor heat exchanger, and the second interface is changed with the interior
Second end of hot device is connected, the first throttle element of being connected between the first interface and the outdoor heat exchanger, and described the
Connected between two interfaces and the indoor heat exchanger second restricting element；
In the air-conditioning system, the setting of the coolant throttle degree of the first throttle element and the second restricting element is caused
The span of the gas outlet temperature Tm=(T2+T3) of the gas-liquid separator/2+ △ t, △ t is -2 DEG C~4 DEG C；Wherein,
T2 is the coil temperature of indoor heat exchanger under refrigeration mode, and T3 is the outlet temperature of outdoor heat exchanger under refrigeration mode.
Preferably, the T2 is the outlet temperature of indoor heat exchanger under heating mode, and T3 is outdoor heat exchange under heating mode
The coil temperature of device.
Preferably, the span of the △ t is -1 DEG C~3 DEG C.
Preferably, refrigerant of the coolant throttle degree of second throttling unit less than or equal to the first throttle unit
Throttle degree.
Preferably, the first throttle unit includes the first electric expansion valve, the first capillary, the first bidirectional throttling valve
Any one；Or the first throttle unit includes second capillary and the first one-way throttle valve of concatenation, and described first
The cut-off direction of one-way throttle valve is the direction that refrigerant flows from outdoor heat exchanger to the gas-liquid separator.
Preferably, second throttling unit includes the second electric expansion valve, three capillary, the second bidirectional throttling valve
Any one；Or second throttling unit includes the 4th capillary and the second one-way throttle valve of concatenation, and second is unidirectional
The cut-off direction of choke valve is the direction that refrigerant flows from the indoor heat exchanger to the gas-liquid separator.
Preferably, the air-conditioning system also includes the connecting tube positioned at the outdoor heat exchanger with the first throttle unit
On road and the refrigerant heat exchanger and check valve that are arranged in parallel, and the check valve is led when air-conditioning system runs on heating mode
It is logical, end when refrigeration mode is run on.
Preferably, the air-conditioning system also includes the connecting tube positioned at the first throttle unit with the gas-liquid separator
The first refrigerant heat exchange unit on road；Or,
The second refrigerant heat exchange unit on connecting line positioned at the gas-liquid separator with second throttling unit.
Preferably, the first refrigerant heat exchange unit is refrigerant heat exchanger, or the first refrigerant heat exchange unit includes
The refrigerant heat exchanger and check valve being arranged in parallel, and the check valve turns on when air-conditioning system runs on heating mode, in fortune
Row ends when refrigeration mode；And/or,
Second refrigerant heat exchange unit be refrigerant heat exchanger, or the second refrigerant heat exchange unit include be arranged in parallel it is cold
Matchmaker's heat exchanger and check valve, and the check valve turns on when air-conditioning system runs on heating mode, is running on refrigeration mode
When end.
Preferably, the air-conditioning system also includes on the gas-liquid separator with the connecting line of the compressor
3rd refrigerant heat exchange unit.
Preferably, the 3rd refrigerant heat exchange unit is refrigerant heat exchanger, or the 3rd refrigerant heat exchange unit includes
Refrigerant heat exchanger and the first magnetic valve, the second magnetic valve, first magnetic valve connected with refrigerant heat exchanger after again with described
Two magnetic valves are arranged in parallel.
Preferably, the air-conditioning system is also filled including the second liquid storage, and second liquid storage fills one end with the compressor
Second gas returning port is connected, and the other end is connected with the gas vent of the gas-liquid separator.
Air-conditioning system of the present utility model, in the case where compressor, outdoor heat exchanger, indoor heat exchanger are certain, foundation
Tm=(T2+T3)/2+ △ t, the coolant throttle degree to first throttle unit and the second throttling unit is configured, can cause
The air-conditioning system of the design operate in specified refrigerating/heating in GB/T 7725-2004 room air conditioners, middle refrigeration/
Heat down, keep high energy efficiency operation.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the structural representation of the utility model air-conditioning system first embodiment；
Fig. 2 is the structural representation of the utility model air-conditioning system second embodiment；
Fig. 3 is the structural representation of the utility model air-conditioning system 3rd embodiment；
Fig. 4 is the structural representation of the utility model air-conditioning system fourth embodiment；
Fig. 5 is the structural representation of the embodiment of the utility model air-conditioning system the 5th；
Fig. 6 is the structural representation of the utility model air-conditioning system sixth embodiment；
Fig. 7 is the structural representation of the embodiment of the utility model air-conditioning system the 7th；
Fig. 8 is the structural representation of the embodiment of the utility model air-conditioning system the 8th；
Fig. 9 is the structural representation of the embodiment of the utility model air-conditioning system the 9th；
Figure 10 is the structural representation of the embodiment of the utility model air-conditioning system the tenth；
Figure 11 is the structural representation of the embodiment of the utility model air-conditioning system the 11st；
Figure 12 is the structural representation of the embodiment of the utility model air-conditioning system the 12nd.
The realization of the utility model purpose, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of the utility model protection.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
Relative position relation, motion conditions for being only used for explaining between each part under a certain particular pose (as shown in drawings) etc., such as
When really the particular pose changes, then directionality indicates also correspondingly to change therewith.
In addition, it is related to the description of " first ", " second " etc. to be only used for describing purpose in the utility model, without being understood that
To indicate or implying its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ",
At least one this feature can be expressed or be implicitly included to the feature of " second ".In addition, the technical side between each embodiment
Case can be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme
It will be understood that the combination of this technical scheme does not exist when appearance is conflicting or cannot realize, also not in the utility model requirement
Protection domain within.
The utility model proposes a kind of air-conditioning system.
Refer to Fig. 1 and Fig. 2, air-conditioning system provided by the utility model, including：It is sequentially communicated and is formed coolant loop
Twin-tub independent compression compressor 1, reversing unit 2, outdoor heat exchanger 3, first throttle unit 4, gas-liquid separator 5, second
Throttling unit 6, indoor heat exchanger 7.Wherein compressor 1 includes housing, and the first cylinder 11 and the second cylinder 12 are provided with the housing,
Housing is externally provided with the first fluid reservoir 13 and the second fluid reservoir 14.The exhaust connected with reversing unit 2 is additionally provided with the housing of compressor 1
The first gas returning port that mouth is connected with the air entry of the first cylinder 11, and second time connected with the air entry of the second cylinder 12
Gas port.First liquid storage fills 13 one end and is connected with reversing unit 2, and the other end is connected with the first gas returning port；Second liquid storage fills 14 one end
Gas vent with gas-liquid separator 5 is connected, and the other end is connected with the second gas returning port.It is understood that second liquid storage is filled
14 can also omit.It is to further improve the stability of air-conditioning system to be communicated with the second fluid reservoir 14 in the second gas returning port.
This air-conditioning passes through the independent compression of the first cylinder 11 and the second cylinder 12, from after the compression of the discharge of the first cylinder 11
Refrigerant and the refrigerant from after the compression of the discharge of the second cylinder 12 are drained into housing 1 and then are discharged from exhaust outlet respectively.In addition, gas
The gas vent of liquid/gas separator 5 directly connects the gas returning port of compressor 1, and the refrigerant by first throttle unit passes through gas-liquid separation
After device 5, gaseous coolant circulates compression by the gas vent of gas-liquid separator 5 to second cylinder 12 of compressor, reduces compression
Power consumption, improving energy efficiency.
Specifically, the span of the delivery space ratio of the cylinder 11 of above-mentioned second cylinder 12 and first is 1%~10%.
Further, the span of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 1%~9%, it is preferable that second
The span of the delivery space ratio of the cylinder 11 of cylinder 12 and first is 4%~9%.Such as the second cylinder 12 and the first cylinder
11 delivery space ratio can be the parameter such as 4%, 5%, 8% or 8.5%.
Above-mentioned reversing unit 2 is preferably four-way valve, and it passes through the first liquid storage filling 13 and is connected with the first gas returning port, reversing unit
2 include in the first valve port D to the 4th valve port S, the first valve port D and the second valve port C and the 3rd valve port E it is one of connect, the
Four valve port S are connected with another in the second valve port C and the 3rd valve port E, the exhaust outlet phase of the first valve port D and compressor 1
Even, the 4th valve port S is connected with the first fluid reservoir 13.The first end of outdoor heat exchanger 3 is connected with the second valve port C, indoor heat exchanger 4
First end be connected with the 3rd valve port E.Specifically, when heating and air conditioner 100 is freezed, the first valve port D and the second valve port C connects
Logical and the 3rd valve port E is connected with the 4th valve port S, and when air-conditioning system is heated, the first valve port D is connected and second with the 3rd valve port E
Valve port C is connected with the 4th valve port S.
Gas-liquid separator 5 includes gas vent, first interface and second interface, and gas vent is connected with the second gas returning port,
First interface is connected with the second end of outdoor heat exchanger 3, and second interface is connected with the second end of indoor heat exchanger 7, first interface
Series connection first throttle unit 4, the second throttling unit of being connected between second interface and indoor heat exchanger 7 and outdoor heat exchanger 3 between
6。
The setting of the coolant throttle degree of the present embodiment first throttle element 4 and the second restricting element 6 causes gas-liquid separation
The span of the gas outlet temperature Tm=(T2+T3) of device 5/2+ △ t, △ t is -2 DEG C~4 DEG C；Wherein, under refrigeration mode
When, T2 is the coil temperature of indoor heat exchanger, and T3 is the outlet temperature of outdoor heat exchanger.When under heating mode, the T2 is room
The outlet temperature of interior heat exchanger, T3 is the coil temperature of outdoor heat exchanger.Further, the span of △ t can also be -1
DEG C~3 DEG C.Such as △ t can be 0.5 DEG C, the parameters such as 1.8 DEG C.
When air-conditioning system 100 is freezed, the HTHP refrigerant discharged from the exhaust outlet of compressor 1 passes through the first valve port D
Being recycled in outdoor heat exchanger 3 with the second valve port C carries out condensation cooling, and the liquid refrigerants recycled from outdoor heat exchanger 3 passes through
Gas-liquid separation is carried out in being recycled to gas-liquid separator 5 from first interface after the one-level reducing pressure by regulating flow of first throttle unit 4, is isolated
The intermediate pressure gaseous coolant for coming is recycled in the second cylinder 12 from gas vent and is compressed.
The intermediate pressure liquid refrigerant recycled from the second interface of gas-liquid separator 5 is by the two of the second throttling unit 6
Level reducing pressure by regulating flow Posterior circle is exchanged heat to reduce indoor environment temperature to indoor heat exchanger 7 is interior, is recycled from indoor heat exchanger 7
Refrigerant be recycled in the first fluid reservoir 13 by the 3rd valve port E and the 4th valve port S, from the refrigerant that the first fluid reservoir 13 is recycled
It is recycled in the first cylinder 11 and is compressed.
When heating and air conditioner 100 is heated, the HTHP refrigerant recycled from the exhaust outlet of compressor 1 passes through first
Valve port D and the 3rd valve port E carry out condensation cooling to raise indoor environment temperature in being recycled to indoor heat exchanger 7, become liquid cold
Matchmaker is recycled to the second throttling unit 6, and promoting the circulation of qi is entered by being recycled in gas-liquid separator 5 from second interface after one-level reducing pressure by regulating flow
Liquid is separated, and the intermediate pressure gaseous coolant separated is recycled in the second cylinder 12 from gas vent and is compressed.
The intermediate pressure liquid refrigerant recycled from the first interface of gas-liquid separator 5 is by the two of first throttle unit 4
Level reducing pressure by regulating flow Posterior circle is exchanged heat to outdoor heat exchanger 3 is interior, and the refrigerant recycled from outdoor heat exchanger 3 passes through the second valve port
C and the 4th valve port S are recycled in the first fluid reservoir 13, and the refrigerant recycled from the first fluid reservoir 13 is recycled to the first cylinder 11
Inside it is compressed.
Thus analysis understands, when heating and air conditioner 100 is run, the refrigerant of different pressures state has respectively entered the
In one cylinder 11 and the second cylinder 12, the first cylinder 11 and the complete independently compression process of the second cylinder 12, from the row of the first cylinder 11
Refrigerant after the compression for going out and the refrigerant from after the compression of the discharge of the second cylinder 12 are discharged in housing 10 after mixing from exhaust outlet row
Go out, simultaneously because the span of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 1%~10%, flow is less
And pressure state refrigerant higher is drained into less second cylinder 12 of delivery space and is compressed, such that it is able to improve energy
Effect, energy-saving and emission-reduction.
Simultaneously by being provided with gas-liquid separator 5 between outdoor heat exchanger 3 and indoor heat exchanger 7, so that gas-liquid separator 5
It is expelled back into after a part of gaseous coolant is separated in the second cylinder 12 and is compressed, room is flowed into when thus reducing refrigeration
Gas content in the refrigerant of interior heat exchanger 7, and reduce the gas being flowed into when heating in the refrigerant of outdoor heat exchanger 3 and contain
Amount, reduces influence of the gaseous coolant to indoor heat exchanger 7 or the heat exchange property of outdoor heat exchanger 3 as evaporator, from
And heat exchange efficiency can be improved, reduce compressor compresses power consumption.
Air-conditioning system of the present utility model, in the case where compressor, outdoor heat exchanger, indoor heat exchanger are certain, foundation
Tm=(T2+T3)/2+ △ t, the coolant throttle degree to the throttling unit 6 of first throttle unit 4 and second is configured, and can make
Obtain specified refrigerating/heating, middle system that the air-conditioning system of the design is operated in GB/T 7725-2004 room air conditioners
It is cold/to heat down, keep high energy efficiency operation.
It is single to the throttling of first throttle unit in this air-conditioning system 4 and second according to Tm=(T2+T3)/2+ △ t in following table
After the coolant throttle degree of unit is configured, this air-conditioning system is operated under specified refrigerating/heating, middle refrigerating/heating
Air-conditioning efficiency situation.
| Specified refrigeration | Centre refrigeration | It is specified to heat | Centre heats | |
| Ability | 3434.4 | 1699 | 4408 | 2226 |
| Power | 811.7 | 293 | 1250 | 425 |
| The coefficient of performance | 4.23 | 5.81 | 3.53 | 5.24 |
From the foregoing, it will be observed that this air-conditioning system is operated under specified refrigeration, the coefficient of performance is 4.23, is lifted compared to conventional scheme
3.92%；When operating in middle refrigeration, the coefficient of performance is 5.81, compared to conventional scheme lifting 5.07%；Operate in specified heating
When, the coefficient of performance is 3.53, compared to conventional scheme lifting 4.1%；When operating in centre and heating, the coefficient of performance is 5.24, is compared
Conventional scheme lifting 4.2%.Therefore, the efficiency that this air-conditioning system is operated under GB operating condition is obtained compared with the prior art
Very big raising.
Specifically, the first throttle unit 4 of this air-conditioning system can be following several set-up modes：
Fig. 1 to Fig. 3 is refer to, in the first set-up mode, first throttle unit 4 can be the first electric expansion valve.Herein
Plant under set-up mode, because the aperture of the first electric expansion valve can adjust, therefore the flow of refrigerant can be adjusted arbitrarily.
In the second set-up mode, first throttle unit 4 can be the first capillary or the first two-way section being separately provided
Stream valve.Under this kind of set-up mode, the production cost of air-conditioning can be further saved, and save the installing space of air-conditioning.
Fig. 4 and Fig. 5 is refer to, in the 3rd set-up mode, first throttle unit 4 may include the second capillary for mutually concatenating
41 and first one-way throttle valve 42, and first one-way throttle valve 42 cut-off direction for refrigerant from outdoor heat exchanger 7 to institute
State the direction of the flowing of gas-liquid separator 5.It should be understood that the stream in refrigerant of the second capillary 41 and the first one-way throttle valve 42
Installation site on dynamic direction can be exchanged.Under compared to the first set-up mode, the production cost of air-conditioning can be saved.This air-conditioning system
Under system operation refrigeration mode, the first one-way throttle valve 42 plays throttling action to refrigerant, then after refrigerant exchanges heat from outdoor heat exchanger 3,
By after the reducing pressure by regulating flow of the second capillary 41 and the first one-way throttle valve 42, into gas-liquid separator 5.This operation of air conditioner is heated
During pattern, the first one-way throttle valve 42 does not play throttling action to refrigerant, and the liquid for recycling intermediate pressure from gas-liquid separator is cold
Matchmaker only after the second capillary 41 carries out second throttle step-down, into the evaporative cooling of outdoor heat exchanger 3.
Specifically, second throttling unit 6 of this air-conditioning system can be following several set-up modes：
In the first set-up mode, the second throttling unit 6 can be the second electric expansion valve.Under this kind of set-up mode, by
Be can adjust in the aperture of the second electric expansion valve, therefore the flow of refrigerant can be adjusted arbitrarily.
In the second set-up mode, the second throttling unit 6 can be the three capillary or the second two-way section being separately provided
Stream valve.Under this kind of set-up mode, the production cost of air-conditioning can be further saved, and save the installing space of air-conditioning.
In the 3rd set-up mode, the second throttling unit 6 can be the 4th capillary 61 and the second one-way throttle for mutually concatenating
Valve 62, and the cut-off direction of the second one-way throttle valve 62 is to be flowed to the refrigerant of the gas-liquid separator from the indoor heat exchanger
Direction.It should be understood that the installation site on the flow direction of refrigerant of the 4th capillary 61 and the second one-way throttle valve 62
Can exchange.Under this kind of set-up mode, the production cost and the flow to refrigerant that can save air-conditioning are effectively adjusted.This
Under air-conditioning system operation heating mode, the second one-way throttle valve 62 plays throttling action to refrigerant, then refrigerant is changed from indoor heat exchanger 7
After heat, by after the reducing pressure by regulating flow of the 4th capillary 61 and the second one-way throttle valve 62, into gas-liquid separator 5.This air-conditioning is transported
During row refrigeration mode, the second one-way throttle valve 62 does not play throttling action to refrigerant, from the intermediate pressure that gas-liquid separator 5 is recycled
Liquid refrigerants only after the 4th capillary 61 carries out second throttle step-down, get in the evaporative cooling of heat exchanger 7.
It should be noted that the air-conditioning system of the present embodiment, any one in various set-up modes of first throttle unit 4
Kind can with various set-up modes of the second throttling unit 6 any one be combined.Such as in first throttle unit 4 and second section
Flow in a kind of combination of unit 6, first throttle unit 4 is electric expansion valve, the second throttling unit 6 is the capillary for mutually concatenating
Pipe and one-way throttle valve.In another combination, first throttle unit 4 is capillary and one-way throttle valve, the second throttling
Unit 6 is electric expansion valve.It is to be appreciated that there are various combinations in the throttling unit 6 of first throttle unit 4 and second,
This will not enumerate.
This air-conditioning system in above-mentioned refrigeration and heating operations, in order under realizing worst hot case, air-conditioning system normal reliable
Operation, the utility model will also set refrigerant heat exchange unit in the correct position of refrigerant pipeline, by circulating refrigerant, to air-conditioning system
The electronic control module of system is lowered the temperature.It is specific as follows：
Fig. 6 is refer to, in a kind of scheme, in refrigerant heat exchange unit application air-conditioning system, outdoor heat exchanger 3 is recycled
The refrigerant without throttling carry out cooling treatment, in this fashion, on the connecting line of outdoor heat exchange 3 and first throttle unit 4
And refrigerant heat exchanger 8 and check valve 9 have been arranged in parallel, and check valve 9 is turned on when air-conditioning system runs on heating mode, in fortune
Row ends when refrigeration mode.I.e. cooling operation mode when, refrigerant from outdoor heat exchanger 3 heat exchange after, by refrigerant heat exchanger 8
Heat exchange, so as to the electronic control module to outdoor unit carries out cooling treatment, it is ensured that under hot environment, the safe work of the electric-controlled plate of outdoor unit
Make.During heating operation mode, refrigerant sequentially passes through the second restricting element 6 and first throttle element 4 from after indoor heat exchanger heat exchange
Throttling after, refrigerant temperature has declined a lot, if being exchanged heat again, the temperature of refrigerant heat exchanger 8 can be caused too low, easily
Condensed water is produced, can there is potential safety hazard when refrigerant heat exchanger 8 is contacted with the electronic control module of outdoor unit, so under heating mode
Check valve 9 is turned on, it is not necessary to exchanged heat by refrigerant.
Incorporated by reference to reference picture 7 and Fig. 8, in another scheme, refrigerant heat exchange unit is applied in air-conditioning system, to outdoor
Refrigerant that heat exchanger 3 is recycled and by the throttling of first throttle unit 4 carries out cooling treatment, in this fashion, this air-conditioning system
System can set the first refrigerant heat exchange single 15 on the connecting line of first throttle unit 4 and gas-liquid separator 5.Incorporated by reference to reference picture
9 and Figure 10, this air-conditioning system also can set the second refrigerant and change on connecting line of the gas-liquid separator 5 with the second throttling unit 7
Hot cell 16.Wherein the first refrigerant heat exchange unit 15 can be refrigerant heat exchanger, or the first refrigerant heat exchange unit 15 may include simultaneously
Join the refrigerant heat exchanger and check valve for setting, and check valve is turned on when air-conditioning system runs on heating mode, is running on system
End during chill formula；Second refrigerant heat exchange unit 16 can be refrigerant heat exchanger, or the second refrigerant heat exchange unit 16 may include simultaneously
Join the refrigerant heat exchanger and check valve for setting, and check valve is turned on when air-conditioning system runs on heating mode, is running on system
End during chill formula.
Figure 11 and Figure 12 is refer to, in other schemes, refrigerant heat exchange unit is applied in air-conditioning system, to gas-liquid separation
The gaseous coolant that device 5 is isolated carries out cooling treatment.In this way, air-conditioning system is in gas-liquid separation 5 and the company of compressor 1
Adapter is provided with the 3rd refrigerant heat exchange unit 17 on road.3rd refrigerant heat exchange unit 17 can be refrigerant heat exchanger, or the 3rd is cold
Matchmaker's heat exchange unit 17 may include refrigerant heat exchanger and the first magnetic valve, the second magnetic valve, wherein, the first magnetic valve exchanges heat with refrigerant
It is arranged in parallel with the second magnetic valve again after device series connection.
It should be noted that the combination of above-mentioned first throttle element 4, the second restricting element 6 and refrigerant heat exchange structure
It is not limited in the structure shown in accompanying drawing, in actual application, each structure can be formed according to different demands
Combination.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
It is every utility model of the present utility model design under, the equivalent structure made using the utility model specification and accompanying drawing content
Conversion, or directly/be used in other related technical fields indirectly and be included in scope of patent protection of the present utility model.
Claims (12)
1. a kind of air-conditioning system, it is characterised in that compressor, reversing unit, outdoor heat exchanger including twin-tub independent compression,
One throttling unit, gas-liquid separator, the second throttling unit, indoor heat exchanger and the first liquid storage are filled；Wherein, the compressor difference
It is provided with the first gas returning port and the second gas returning port, the second gas that the first cylinder that the first gas returning port is connected is connected with the second gas returning port
The delivery space ratio range of cylinder is 1%~10%；
The reversing unit includes the first valve port to the 4th valve port, its in first valve port and the second valve port and the 3rd valve port
In a connection, the 4th valve port connects with another in second valve port and the 3rd valve port, first valve
Mouth is connected with the exhaust outlet, and the 4th valve port is connected with first fluid reservoir；
The first end of the outdoor heat exchanger is connected with second valve port, the first end of the indoor heat exchanger and the described 3rd
Valve port is connected；
The gas-liquid separator includes gas vent, first interface and second interface, the gas vent and second return-air
Mouthful it is connected, the first interface is connected with the second end of the outdoor heat exchanger, the second interface and the indoor heat exchanger
The second end be connected, the first throttle element of being connected between the first interface and the outdoor heat exchanger, described second connects
Mouthful connected second restricting element and the indoor heat exchanger between；
In the air-conditioning system, the setting of the coolant throttle degree of the first throttle element and the second restricting element causes described
The span of the gas outlet temperature Tm=(T2+T3) of gas-liquid separator/2+ △ t, △ t is -2 DEG C~4 DEG C；Wherein, T2 is
The coil temperature of indoor heat exchanger under refrigeration mode, T3 is the outlet temperature of outdoor heat exchanger under refrigeration mode.
2. air-conditioning system as claimed in claim 1, it is characterised in that the T2 also under heating mode indoor heat exchanger go out
Mouth temperature, T3 is also the coil temperature of outdoor heat exchanger under heating mode.
3. air-conditioning system as claimed in claim 1 or 2, it is characterised in that the span of the △ t is -1 DEG C~3 DEG C.
4. air-conditioning system as claimed in claim 1 or 2, it is characterised in that the coolant throttle degree of second throttling unit
Less than or equal to the coolant throttle degree of the first throttle unit.
5. air-conditioning system as claimed in claim 1, it is characterised in that the first throttle unit includes the first electronic expansion
Any one of valve, the first capillary, the first bidirectional throttling valve；Or the first throttle unit includes the second capillary of concatenation
Pipe and the first one-way throttle valve, and first one-way throttle valve cut-off direction for refrigerant from the outdoor heat exchanger to described
The direction of gas-liquid separator flowing.
6. air-conditioning system as claimed in claim 1, it is characterised in that second throttling unit includes the second electronic expansion
Any one of valve, three capillary, the second bidirectional throttling valve；Or second throttling unit includes the 4th capillary of concatenation
Pipe and the second one-way throttle valve, and the second one-way throttle valve cut-off direction for refrigerant from the indoor heat exchanger to the gas-liquid
The direction of the flowing of separator.
7. air-conditioning system as claimed in claim 1, it is characterised in that the air-conditioning system also includes being located at the outdoor heat exchange
On device and the connecting line of the first throttle unit and the refrigerant heat exchanger and check valve that are arranged in parallel, and the check valve exists
Air-conditioning system is turned on when running on heating mode, is ended when refrigeration mode is run on.
8. air-conditioning system as claimed in claim 1, it is characterised in that the air-conditioning system also includes being located at the first throttle
The first refrigerant heat exchange unit on unit and the connecting line of the gas-liquid separator；Or,
The second refrigerant heat exchange unit on connecting line positioned at the gas-liquid separator with second throttling unit.
9. air-conditioning system as claimed in claim 8, it is characterised in that the first refrigerant heat exchange unit is refrigerant heat exchanger,
Or the first refrigerant heat exchange unit includes the refrigerant heat exchanger and check valve that are arranged in parallel, and the check valve is in air-conditioning system
System is turned on when running on heating mode, is ended when refrigeration mode is run on；And/or,
Second refrigerant heat exchange unit is refrigerant heat exchanger, or the second refrigerant heat exchange unit includes that the refrigerant that is arranged in parallel is changed
Hot device and check valve, and the check valve turns on when air-conditioning system runs on heating mode, is cut when refrigeration mode is run on
Only.
10. air-conditioning system as claimed in claim 1, it is characterised in that the air-conditioning system also includes that being located at the gas-liquid divides
The 3rd refrigerant heat exchange unit on connecting line from device with the compressor.
11. air-conditioning systems as claimed in claim 10, it is characterised in that the 3rd refrigerant heat exchange unit exchanges heat for refrigerant
Device, or the 3rd refrigerant heat exchange unit includes refrigerant heat exchanger and the first magnetic valve, the second magnetic valve, first electromagnetism
Valve is arranged in parallel with second magnetic valve again after being connected with refrigerant heat exchanger.
12. air-conditioning systems as claimed in claim 1, it is characterised in that the air-conditioning system is also filled including the second liquid storage, described
Second liquid storage fills one end and is connected with the second gas returning port of the compressor, and the other end connects with the gas vent of the gas-liquid separator
Connect.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620723190.4U CN206291521U (en) | 2016-07-08 | 2016-07-08 | Air-conditioning system |
| PCT/CN2016/113735 WO2018006569A1 (en) | 2016-07-08 | 2016-12-30 | Air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620723190.4U CN206291521U (en) | 2016-07-08 | 2016-07-08 | Air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206291521U true CN206291521U (en) | 2017-06-30 |
Family
ID=59094071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620723190.4U Active CN206291521U (en) | 2016-07-08 | 2016-07-08 | Air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206291521U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972852A (en) * | 2016-07-08 | 2016-09-28 | 广东美的制冷设备有限公司 | Air conditioning system |
| CN115200179A (en) * | 2022-06-28 | 2022-10-18 | 珠海格力电器股份有限公司 | Air conditioning system, throttling control method and device thereof, and storage medium |
-
2016
- 2016-07-08 CN CN201620723190.4U patent/CN206291521U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972852A (en) * | 2016-07-08 | 2016-09-28 | 广东美的制冷设备有限公司 | Air conditioning system |
| CN115200179A (en) * | 2022-06-28 | 2022-10-18 | 珠海格力电器股份有限公司 | Air conditioning system, throttling control method and device thereof, and storage medium |
| CN115200179B (en) * | 2022-06-28 | 2023-09-29 | 珠海格力电器股份有限公司 | Air conditioning system, throttle control method and device thereof and storage medium |
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