CN106766325A - Low-temperature air-conditioning system and air-conditioning - Google Patents
Low-temperature air-conditioning system and air-conditioning Download PDFInfo
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- CN106766325A CN106766325A CN201611046317.4A CN201611046317A CN106766325A CN 106766325 A CN106766325 A CN 106766325A CN 201611046317 A CN201611046317 A CN 201611046317A CN 106766325 A CN106766325 A CN 106766325A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 59
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000009835 boiling Methods 0.000 claims abstract description 13
- 239000003507 refrigerant Substances 0.000 claims description 105
- 238000001704 evaporation Methods 0.000 claims description 52
- 230000008020 evaporation Effects 0.000 claims description 49
- 238000009833 condensation Methods 0.000 claims description 37
- 230000005494 condensation Effects 0.000 claims description 37
- 238000005057 refrigeration Methods 0.000 claims description 18
- 230000005520 electrodynamics Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 11
- 239000000470 constituent Substances 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 25
- 239000002826 coolant Substances 0.000 description 16
- 238000004781 supercooling Methods 0.000 description 11
- 230000005484 gravity Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000002427 irreversible effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 241000009298 Trigla lyra Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002631 hypothermal effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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
- F25B39/00—Evaporators; Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
-
- 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
- F25B2400/23—Separators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides a kind of low-temperature air-conditioning system and air-conditioning, wherein, a kind of low-temperature air-conditioning system, including：Compressor, four-way valve, indoor heat exchanger, outdoor heat exchanger and throttling arrangement, the first valve port of four-way valve are connected with compressor, and the second valve port of four-way valve is connected with indoor heat exchanger, and the 3rd valve port of four-way valve is connected with outdoor heat exchanger, also includes：Supplementary heat exchanger, is connected with the outdoor heat exchanger；First separator, the first of the first separator is connected with supplementary heat exchanger, and second mouthful of the first separator is connected with indoor heat exchanger, and the 3rd mouthful of the first separator is connected through supplementary heat exchanger with the 4th mouthful of four-way valve.By technical scheme, the mode of low-temperature heating is realized using non-azeotropic mixed working medium, low boiling into the constituent content of evaporator is effectively increased, and then improves evaporability of the heat exchanger under extremely low environment temperature, enhance the effect of air-conditioning system low-temperature heating.
Description
Technical field
The present invention relates to household electrical appliance technical field, in particular to a kind of low-temperature air-conditioning system and a kind of air-conditioning.
Background technology
With the improvement of people ' s living standards with the enhancing of awareness of saving energy, with its energy-conservation, control is flexible, easily installs for air-conditioning
The features such as with safeguarding, vast average family is come into, and be increasingly widely applied.However, under low-temperature condition, due to
Than relatively low, the factor such as easy frosting of evaporator, the heat for causing refrigerant to be absorbed from air is substantially reduced evaporating temperature, heats effect
Fruit is deteriorated, and influences the using effect of user, often results in the complaint of client.
Therefore, a kind of low-temperature air-conditioning system how is designed, the constituent content that low boiling enters evaporator is improved, and then improve
Evaporability of the heat exchanger under extremely low environment temperature, the effect for strengthening air-conditioning system low-temperature heating turns into technology urgently to be resolved hurrily
Problem.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art or correlation technique.
Therefore, it is an object of the present invention to propose a kind of low-temperature air-conditioning system.
It is another object of the present invention to propose a kind of air-conditioning.
To achieve the above object, a kind of technical scheme according to the first aspect of the invention, it is proposed that low-temperature air-conditioning system,
Including：Compressor, four-way valve, indoor heat exchanger, outdoor heat exchanger and throttling arrangement, the first valve port and the compressor phase of four-way valve
Even, the second valve port of four-way valve is connected with indoor heat exchanger, and the 3rd valve port of four-way valve is connected with outdoor heat exchanger, also includes：
Supplementary heat exchanger, is connected with outdoor heat exchanger；First separator, the first of the first separator is connected with supplementary heat exchanger, the
Second mouthful of one separator is connected with indoor heat exchanger, and the 3rd mouthful of the first separator through the 4th of supplementary heat exchanger and four-way valve
Mouth is connected.
The low-temperature air-conditioning system of technology according to the present invention scheme, gas is realized by the first separator under gravity
Body is automatically separated with liquid, effectively increases gaseous coolant into the constituent content of evaporator, and then improve heat exchanger and exist
Evaporability under extremely low environment temperature, enhances the effect of air-conditioning system low-temperature heating.
The low-temperature air-conditioning system of above-mentioned technical proposal of the invention, can also have following technical characteristic：
According to above-mentioned technical proposal of the present invention, it is preferable that supplementary heat exchanger includes：Condensation part and evaporation part, wherein, it is cold
Solidifying portion includes：First interface, first interface is connected with outdoor heat exchanger；And second interface, second interface and the first separator
First be connected；Evaporation part includes：First entrance, first entrance is connected with the 3rd mouthful of the first separator；And first go out
Mouthful, first outlet is connected by the first pipeline with the 4th valve port of four-way valve.
In the technical scheme, when heating circulation, the first separator separate after liquid refrigerants with come from outdoor heat exchanger
Gaseous coolant mixing after, supplementary heat exchanger evaporation part, supplementary heat exchanger evaporation are entered by the first entrance of supplementary heat exchanger
Portion's evaporation endothermic；And the gaseous coolant after the separation of the first separator, enter auxiliary by the second interface of supplementary heat exchanger condensation part
Heat exchanger is helped, the refrigerant heat-shift with evaporation part, further condensation, increased the degree of supercooling of refrigerant, contribute to increase system
Refrigerating capacity, subsequently into outdoor heat exchanger evaporation endothermic, and then improve the heating effect of air-conditioning.During kind of refrigeration cycle, refrigerant
Flowed into by the first interface of supplementary heat exchanger, the first separator is then flow to by second interface.
According to above-mentioned technical proposal of the present invention, it is preferable that also include：Second separator, the entrance connection of the second separator
In on the first pipeline, the outlet of the second separator is connected with the air inlet of compressor, and refrigerant flows through second point by the first pipeline
From device, it flow in compressor.
In the technical scheme, mixing refrigerant enters the second separator by the first pipeline, is separated by the second separator
Afterwards, liquid refrigerants is discharged, prevents compressor from sucking liquid refrigerants and damaging, the gaseous coolant after separation flow to compressor, carries
The air injection enthalpy-increasing effect of compressor high, and then improve the service life of compressor.
Above-mentioned technical proposal of the invention, it is preferable that also include：Second pipeline, connects the first interface of condensation part
With outdoor heat exchanger, refrigerant in cooling mode, the condensation part of supplementary heat exchanger flow to by outdoor heat exchanger by the second pipeline,
Refrigerant in a heating mode, outdoor heat exchanger is flow to by the condensation part of supplementary heat exchanger by the second pipeline；3rd pipeline, connection
The 3rd mouthful of the evaporation part of supplementary heat exchanger and the first separator, refrigerant flow to supplementary heat exchanger from the 3rd mouthful of the first separator
Evaporation part.
In the technical scheme, during kind of refrigeration cycle, refrigerant flow to supplementary heat exchanger by the second pipeline from outdoor heat exchanger
Condensation part, into supplementary heat exchanger after be further subcooled, improve primary flow path refrigerant degree of supercooling, so as to improve whole air-conditioning system
The exchange capability of heat of system.When heating circulation, refrigerant flow to outdoor heat exchanger by the condensation part of supplementary heat exchanger by the second pipeline,
Refrigerant becomes the gaseous coolant of low-temp low-pressure by outdoor heat exchanger evaporation endothermic.3rd pipeline is used for the first separator point
The liquid refrigerants for separating out is flowed to the evaporation part of supplementary heat exchanger, and evaporation part makes liquid refrigerants evaporation endothermic.
Above-mentioned technical proposal of the invention, it is preferable that also include：First throttle device, on the second pipeline, control
Flow velocity and pressure of the refrigeration matchmaker in the second pipeline；Second throttling device, on the 3rd pipeline, controls in the 3rd pipeline,
Refrigerant flow to the flow velocity and pressure of the evaporation part of supplementary heat exchanger by the 3rd mouthful of the first separator.
In the technical scheme, when refrigerant flow to supplementary heat exchanger by outdoor heat exchanger, by first throttle device, become
The refrigerant of medium temperature and medium pressure, can make supplementary heat exchanger preferably to the further supercooling of refrigerant.Can be adjusted by second throttling device
Save the flow velocity and pressure of the refrigerant from the outflow of the first separator.
Above-mentioned technical proposal of the invention, it is preferable that also include：Control device, is connected with four-way valve, with first segment
Stream device is connected with second throttling device.
In the technical scheme, control device can change the connection direction of four-way valve, with reference to first throttle device and
Two throttling arrangements, can be controlled to the pressure of refrigerant, flow velocity and direction.
Above-mentioned technical proposal of the invention, it is preferable that control device also includes：It is in low-temperature air-conditioning system and is heated
Under pattern, the first valve port of control is connected with the second valve port, and the 4th valve port is connected with the 3rd valve port, and refrigerant can be by compressor through four-way
In valve flow to outdoor heat exchanger, the refrigerant that the refrigerant flowed out by first outlet flows out with indoor heat exchanger can also be mixed and flow to
Second separator；And be under refrigeration mode in low-temperature air-conditioning system, the first valve port of control is connected with the 3rd valve port, the 4th valve
Mouthful connected with the second valve port, during refrigerant can flow to indoor heat exchanger by compressor through four-way valve, can also be by by first outlet stream
The refrigerant that the refrigerant for going out flows out with outdoor heat exchanger mixes and flow to the second separator.
In the technical scheme, under heating mode, the first valve port and the second valve port are connected, and the 4th valve port and the 3rd valve port connect
Logical, compressor air-discharging enters four-way valve from the first valve port, is then flowed out from the second valve port, reaches indoor heat exchanger condensation heat release,
Afterwards by second mouthful of separator of entrance first of the first separator, gas realizes automatic point with liquid under gravity
From liquid refrigerants delivers to second throttling device throttling, and subsequently into the evaporation part channel for heat exchange of supplementary heat exchanger, liquid refrigerants steams
Hair heat absorption；Another road gaseous coolant, the condensation part of supplementary heat exchanger is entered from the first separator top, and the refrigerant with evaporation part is handed over
Heat exchange amount, further condensation increased degree of supercooling of the cryogenic fluid before the throttling of first throttle device, contribute to increase system
Refrigerating capacity.By after the throttling of first throttle device, into outdoor heat exchanger evaporation endothermic, becoming the gaseous coolant of low-temp low-pressure,
The second separator is reached after converging with the refrigerant from supplementary heat exchanger evaporation part, compressor is finally flowed back to, whole circulation is completed.
Under refrigeration mode, the first valve port is connected with the 3rd valve port, and the 4th valve port is connected with the second valve port.Compressor air-discharging is passed through
Cross the first valve port and enter four-way valve, then entering outdoor heat exchanger by the 3rd valve port condenses heat release, is then passed through first throttle
After control device tentatively throttling, become the refrigerant of the middle middle temperature of pressure, into the condensation part of supplementary heat exchanger, further condensation increases
Refrigerant fluid gets in the degree of supercooling of heat exchanger, contributes to the refrigerating capacity of increase system.Refrigerant enters first point afterwards
From device, gas is realized being automatically separated with liquid under gravity, wherein, liquid refrigerants delivers to second throttling device throttling
Afterwards, into the evaporation part evaporation endothermic of supplementary heat exchanger, after then converging with the low-temp low-pressure refrigerant from indoor heat exchanger, arrive
Up to the second separator, the suction line of compressor is returned to, complete kind of refrigeration cycle.
Any of the above-described technical scheme of the invention, it is preferable that refrigerant includes：The different refrigerant of various boiling points is mixed
The mixed non-azeotropic refrigerant for closing.
In the technical scheme, mixed non-azeotropic refrigerant does not have azeotropic point, and when level pressure is evaporated, temperature is continually changing by low
Slid to height；Then contrast when level pressure condenses.Therefore, condensation process cooling water is continually changing, and using this characteristic, subtracts
The heat transfer irreversible loss of small condenser and evaporator is improved the efficiency of kind of refrigeration cycle.
Any of the above-described technical scheme of the invention, it is preferable that throttling arrangement includes：It is electromagnetic type expansion valve, electronic
Formula expansion valve.
It is electromagnetic type expansion valve or electrodynamic type expansion valve, Ke Yishi by the way that throttling arrangement is selected in the technical scheme
Existing condensing pressure controls the flow of refrigerant to the throttling of evaporating pressure, so as to reach to the coolant throttle step-down in pipeline.
A kind of air-conditioning that the technical scheme of second aspect present invention is provided includes any one technology of first aspect present invention
The low-temperature air-conditioning system that scheme is provided, therefore the air-conditioning has any of the above-described whole of the low-temperature air-conditioning system of technical scheme offer
Beneficial effect, will not be repeated here.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Fig. 1 shows a low-temperature air-conditioning system schematic diagram according to an embodiment of the invention.
100 low-temperature air-conditioning systems, 102 compressors, 104 four-way valves, the valve ports of a first, the valve ports of b second, the valve ports of c the 3rd, d
Four valve ports, 106 indoor heat exchangers, 108 outdoor heat exchangers, 110 second separators, 112 first pipelines, 114 second pipelines, 116
First throttle device, 118 the 3rd pipelines, 120 second throttling devices, 122 first separators, 124 supplementary heat exchangers, e firsts,
The 3rd mouthful of second mouthful of f, g.
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied to be further described in detail the present invention.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not limited to following public affairs
The limitation of the specific embodiment opened.
Low-temperature air-conditioning system 100 according to an embodiment of the invention is specifically described with reference to Fig. 1.
As shown in figure 1, low-temperature air-conditioning system 100 includes according to an embodiment of the invention：Compressor 102, four-way valve
104th, indoor heat exchanger 106, outdoor heat exchanger 108 and throttling arrangement, the first valve port a and the phase of compressor 102 of four-way valve 104
Even, the second valve port b of four-way valve 104 is connected with indoor heat exchanger 106, the 3rd valve port c and outdoor heat exchanger of four-way valve 104
108 are connected, and also include：Supplementary heat exchanger 124, is connected with outdoor heat exchanger 108；First separator 122, the first separator 122
First e be connected with supplementary heat exchanger 124, second mouthful of f of the first separator 122 is connected with indoor heat exchanger 106, first point
From the 3rd mouthful of g being connected through supplementary heat exchanger 124 and the 4th valve port d of four-way valve 104 of device 122.
Low-temperature air-conditioning system 100, real under gravity by the first separator 122 according to an embodiment of the invention
Existing gas is automatically separated with liquid, and the mode of low-temperature heating is realized using non-azeotropic mixed working medium, effectively increases low boiling
Into the constituent content of evaporator, and then evaporability of the heat exchanger under extremely low environment temperature is improve, enhance low temperature empty
The effect of adjusting system low-temperature heating.
Low-temperature air-conditioning system 100 according to the abovementioned embodiments of the present invention, can also have following technical characteristic：
According to the above embodiment of the present invention, it is preferable that supplementary heat exchanger 124 includes：Condensation part and evaporation part, wherein,
Condensation part includes：First interface, first interface is connected with outdoor heat exchanger 108；And second interface, second interface with first point
First from device 122 is connected；Evaporation part includes：First entrance, first entrance is connected with the 3rd mouthful of the first separator 122；
And first outlet, first outlet is connected by the first pipeline 112 with the 4th valve port d of four-way valve 104.
In this embodiment, when heating circulation, the first separator 122 separate after higher boiling liquid refrigerants with from outdoor
After the gaseous coolant mixing of heat exchanger 108, the right side of supplementary heat exchanger 124 is entered by the first entrance of supplementary heat exchanger 124
Evaporation part, supplementary heat exchanger evaporation part evaporation endothermic；And the low boiling gaseous coolant after the separation of the first separator 122, by auxiliary
The second interface of the condensation part in the left side of heat exchanger 124 is helped to enter supplementary heat exchanger 124, the refrigerant heat-shift with evaporation part enters
One step is condensed, and increased the degree of supercooling of refrigerant, contributes to the refrigerating capacity of increase system, is evaporated subsequently into outdoor heat exchanger 108
Heat absorption, and then improve the heating effect of air-conditioning.During kind of refrigeration cycle, refrigerant is flowed into by the first interface of supplementary heat exchanger, so
The first separator is flow to by second interface afterwards.
According to the above embodiment of the present invention, it is preferable that also include：Second separator 110, the entrance of the second separator 110
It is connected on the first pipeline 112, the outlet of the second separator 110 is connected with the air inlet of compressor 102, refrigerant is by the first pipe
Road 112 flows through the second separator 110, flow in compressor 102.
In this embodiment, mixing refrigerant enters the second separator 110 by the first pipeline 112, by the second separator
After 110 separate, liquid refrigerants is discharged, prevent compressor 102 from sucking liquid refrigerants and damaging, the gaseous coolant after separation flow to
Compressor 102, improves the air injection enthalpy-increasing effect of compressor 102, and then improves the service life of compressor 102.
According to one embodiment of present invention, it is preferable that also include：Second pipeline 114, connects the first interface of condensation part
With outdoor heat exchanger 108, refrigerant in cooling mode, supplementary heat exchanger flow to by outdoor heat exchanger 108 by the second pipeline 114
124 condensation part, refrigerant flow to outdoor and changes by the second pipeline 114 in a heating mode, by the condensation part of supplementary heat exchanger 124
Hot device 108；3rd pipeline 118, connects the 3rd mouthful of evaporation part and first separator 122 of supplementary heat exchanger 124, and refrigerant is from the
3rd mouthful of g of one separator 122 flow to the evaporation part of supplementary heat exchanger 124.
In this embodiment, during kind of refrigeration cycle, refrigerant flow to auxiliary and changes by the second pipeline 114 from outdoor heat exchanger 108
The condensation part of hot device 124, into supplementary heat exchanger 124 after be further subcooled, improve primary flow path refrigerant degree of supercooling, so as to improve
The exchange capability of heat of whole air-conditioning system.When heating circulation, refrigerant passes through the second pipeline by the condensation part of supplementary heat exchanger 124
114 flow to outdoor heat exchanger 108, and refrigerant becomes the gaseous coolant of low-temp low-pressure by the evaporation endothermic of outdoor heat exchanger 108.The
Three pipelines 118 are used to flow the liquid refrigerants that the first separator 122 is isolated to the evaporation part of supplementary heat exchanger 124, evaporation
Portion makes liquid refrigerants evaporation endothermic.
According to one embodiment of present invention, it is preferable that also include：First throttle device 116, on the second pipeline,
Flow velocity and pressure of the control refrigerant in the second pipeline；Second throttling device 120, on the 3rd pipeline, control is in the 3rd pipe
In road, refrigerant flow to the flow velocity and pressure of the evaporation part of supplementary heat exchanger 124 by the 3rd mouthful of the first separator.
In this embodiment, when refrigerant flow to supplementary heat exchanger 124 by outdoor heat exchanger 108, by first throttle device
116, become the refrigerant of medium temperature and medium pressure, supplementary heat exchanger 124 can be made preferably to the further supercooling of refrigerant.By the second throttling
Device 120 can adjust the flow velocity and pressure of the refrigerant from the outflow of the first separator 122.
According to the abovementioned embodiments of the present invention, it is preferable that also include：Control device, is connected with four-way valve 104, with first
Throttling arrangement 116 is connected with second throttling device 120.
In this embodiment, control device can change the connection direction of four-way valve 104, with reference to first throttle device 116
With second throttling device 120, the pressure of refrigerant, flow velocity and direction can be controlled.
According to the abovementioned embodiments of the present invention, it is preferable that control device also includes：It is in low-temperature air-conditioning system and heats mould
Under formula, the first valve port a of control is connected with the valve ports of b second, and the valve ports of d the 4th are connected with the valve ports of c the 3rd, and refrigerant can be by compressor 102
In flowing to outdoor heat exchanger 108 through four-way valve 104, the refrigerant flowed out by first outlet can also be flowed with indoor heat exchanger 106
The refrigerant mixing for going out flow to the second separator 110；And be under refrigeration mode in low-temperature air-conditioning system, control the first valve port a
Connected with the 3rd valve port c, the 4th valve port d is connected with the second valve port b, refrigerant can flow to room by compressor 102 through four-way valve 104
In interior heat exchanger 106, the refrigerant that the refrigerant flowed out by first outlet flows out with outdoor heat exchanger 108 can also be mixed and flow to second
Separator 110.
In this embodiment, under heating mode, the first valve port a and the second valve port b is connected, the 4th valve port d and the 3rd valve port c
Connection, compressor 102 is vented from the first valve port a and enters four-way valve 104, is then flowed out from the second valve port b, reaches indoor heat exchanger
106 condensation heat releases, afterwards by second mouthful of first separator of entrance 122 of the first separator 122, gas under gravity
Realize being automatically separated with liquid, liquid refrigerants is delivered to second throttling device 120 and throttled, subsequently into the steaming of supplementary heat exchanger 124
Hair portion channel for heat exchange, liquid refrigerants evaporation endothermic；Another road gaseous coolant, auxiliary heat-exchanging is entered from the top of the first separator 122
The condensation part of device 124, the refrigerant heat-shift with evaporation part, further condensation, increased cryogenic fluid in first throttle device
Degree of supercooling before 116 throttlings, contributes to the refrigerating capacity of increase system.By after the throttling of first throttle device 116, being changed into outdoor
The evaporation endothermic of hot device 108, becomes the gaseous coolant of low-temp low-pressure, after converging with the refrigerant from the evaporation part of supplementary heat exchanger 124
The second separator 110 is reached, compressor 102 is finally flowed back to, whole circulation is completed.
Under refrigeration mode, the first valve port a is connected with the 3rd valve port c, and the 4th valve port d is connected with the second valve port b.Compressor
102 exhausts enter four-way valve 104 by the first valve port a, and then entering outdoor heat exchanger 108 by the 3rd valve port c condenses heat release,
After being then passed through the tentatively throttling of first throttle device 116, become the refrigerant of the middle middle temperature of pressure, into the condensation of supplementary heat exchanger 124
Portion, further condensation, increased the degree of supercooling that refrigerant fluid gets in heat exchanger 106, contribute to the refrigeration of increase system
Amount.Refrigerant enters the first separator 122 afterwards, and gas is realized being automatically separated with liquid under gravity, wherein, liquid is cold
Matchmaker is delivered to after second throttling device 120 throttles, into the evaporation part evaporation endothermic of supplementary heat exchanger 124, then with from interior
After the low-temp low-pressure refrigerant of heat exchanger 106 converges, the second separator 110 is reached, return to the suction line of compressor 102, completed
Kind of refrigeration cycle.
According to the abovementioned embodiments of the present invention, it is preferable that refrigerant includes：The different refrigerant of various boiling points is mixed
Mixed non-azeotropic refrigerant.
In this embodiment, mixed non-azeotropic refrigerant does not have an azeotropic point, when level pressure is evaporated, temperature be continually changing by it is low to
Height sliding；Then contrast when level pressure condenses.Using this characteristic, condensation process cooling water is continually changing, evaporation process
Cooled object temperature is that the continuous alternating temperature feature for reducing is adapted, reduce it is covert during heat transfer temperature difference, reduced
The irreversible loss of journey, and then reducing the heat transfer irreversible loss of condenser and evaporator enables the efficiency of kind of refrigeration cycle to carry
It is high.When the temperature approach between evaporating temperature and cooled object temperature, condensation temperature and surrounding medium temperature is smaller, kind of refrigeration cycle
Efficiency is higher.
Any of the above-described embodiment of the invention, it is preferable that first throttle device 116 includes：Electromagnetic type expansion valve,
Electrodynamic type expansion valve；And second throttling device 120 includes：Electromagnetic type expansion valve, electrodynamic type expansion valve.
In this embodiment, electromagnetic type expansion valve and electrodynamic type expansion valve can control the folding size of valve element, Jin Erke
With the flow velocity of refrigerant, flow direction and pressure in control piper.
Embodiment one：
As shown in figure 1, when winter it is cold, user opens air-conditioning, air-conditioning is transferred under heating mode, now the first valve
Mouthful a and the second valve port b is connected, and the 4th valve port d is connected with the 3rd valve port c, after mixed working fluid is through the compression of compressor 102, by the
One valve port a enters four-way valve 104, is then flowed out from the second valve port b, reaches the condensation heat release of indoor heat exchanger 106, wherein higher boiling
Component major part is condensed into liquid, and low boiling working fluid remains in that to be gaseous state.Afterwards by the first separator 122, in gravity
In the presence of gas and liquid realize being automatically separated, the higher boiling liquid refrigerants separated is saved by second throttling device 120
After stream, into supplementary heat exchanger on the right side of evaporation part evaporation endothermic；Another road low boiling gaseous coolant, from the of the first separator
The condensation part for entering on the left of supplementary heat exchanger flatly, the refrigerant heat-shift with evaporation part, further condensation, increased refrigeration stream
Degree of supercooling of the body before the throttling of first throttle device 116, contributes to the refrigerating capacity of increase system, then, is filled by first throttle
After putting 116 throttlings, into outdoor heat exchanger evaporation endothermic, become the gaseous coolant of low-temp low-pressure, steamed with from evaporative condenser
After the refrigerant of hair side converges, the second separator 6 is reached, compressor is returned into air intake duct pipeline, strengthen the injection effect of compressor
Really, the whole capability of compressor 102 is improved.
A kind of air-conditioning that the embodiment of second aspect present invention is provided includes any one embodiment of first aspect present invention
The air-conditioning system of offer, therefore the air-conditioning has any of the above-described whole beneficial effects of the air-conditioning system of embodiment offer, herein
Repeat no more.
Technical scheme is described in detail above in association with accompanying drawing, the present invention proposes a kind of low-temperature air-conditioning system,
Using the Component Separation Performance of Ternary of non-azeotropic mixed working medium, low boiling into the constituent content of evaporator is effectively increased, improve
Evaporability of the heat exchanger under more low ambient temperature, so as to improve the problem of air-conditioning system low temperature scarce capacity, strengthens air-conditioning
The ability that system hypothermia is heated.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of low-temperature air-conditioning system, including：Compressor (102), four-way valve (104), the indoor heat exchanger (106), outdoor
Heat exchanger (108) and throttling arrangement, the first valve port (a) of the four-way valve (104) are connected with the compressor (102), described
Second valve port (b) of four-way valve (104) is connected with the indoor heat exchanger (106), the 3rd valve port of the four-way valve (104)
C () is connected with the outdoor heat exchanger (108), it is characterised in that also include：
Supplementary heat exchanger (124), is connected with the outdoor heat exchanger (108)；
First separator (122), the first (e) of first separator (122) is connected with the supplementary heat exchanger (124),
Second mouthful (f) of first separator (122) is connected with the indoor heat exchanger (106), first separator (122)
3rd mouthful (g) is connected through the supplementary heat exchanger (124) with the 4th valve port (d) of the four-way valve (104).
2. low-temperature air-conditioning system according to claim 1, it is characterised in that the supplementary heat exchanger (124) includes：Condensation
Portion and evaporation part, wherein,
The condensation part includes：First interface, the first interface is connected with the outdoor heat exchanger (108)；And second connect
Mouthful, the second interface is connected with the first of first separator (122)；
The evaporation part includes：First entrance, the first entrance is connected with the 3rd mouthful of first separator (122)；With
And first outlet, the first outlet is connected by the first pipeline (112) with the 4th valve port (d) of the four-way valve 114.
3. low-temperature air-conditioning system according to claim 2, it is characterised in that also include：
Second separator (110), the entrance of second separator (110) is connected on first pipeline (112), and described
The outlet of two separators (110) is connected with the air inlet of the compressor (102), and refrigerant is flowed by first pipeline (112)
Through second separator (110), it flow in the compressor (102).
4. low-temperature air-conditioning system according to claim 3, it is characterised in that also include：
Second pipeline (114), connects first interface and the outdoor heat exchanger (108) of the condensation part, and refrigerant is in refrigeration mould
Under formula, the condensation of the supplementary heat exchanger (124) is flow to by second pipeline (114) by the outdoor heat exchanger (108)
Portion, the refrigerant in a heating mode, is flowed by the condensation part of the supplementary heat exchanger (124) by second pipeline (114)
To the outdoor heat exchanger (108)；
3rd pipeline (118), connects the evaporation part and the 3rd of first separator (122) of the supplementary heat exchanger (124)
Mouth (g), the refrigerant flow to the evaporation of the supplementary heat exchanger (124) from the 3rd mouthful (g) of first separator (122)
Portion.
5. low-temperature air-conditioning system according to claim 4, it is characterised in that also include：
First throttle device (116), on second pipeline (114), controls the refrigerant in second pipeline (114)
Interior flow velocity and pressure；
Second throttling device (120), on the 3rd pipeline (118), control is described in the 3rd pipeline (118)
Refrigerant is flow to the flow velocity and pressure of the evaporation part of the supplementary heat exchanger (124) by the 3rd mouthful (g) of first separator (122)
By force.
6. low-temperature air-conditioning system according to claim 5, it is characterised in that also include：
Control device, is connected with the four-way valve (104), with the first throttle device (116) and the second throttling device
(120) it is connected.
7. low-temperature air-conditioning system according to claim 6, it is characterised in that the control device also includes：
It is under heating mode in the low-temperature air-conditioning system, controls first valve port (a) with second valve port (b) even
Logical, the 4th valve port (d) is connected with the 3rd valve port (c), and the refrigerant can be by the compressor (102) through the four-way
Valve (104) is flowed in the outdoor heat exchanger (108), the refrigerant that will can be also flowed out by the first outlet and the room
The refrigerant mixing of interior heat exchanger (106) outflow flow to second separator (110)；And
It is under refrigeration mode in the low-temperature air-conditioning system, controls first valve port (a) with the 3rd valve port (c) even
Logical, the 4th valve port (d) is connected with second valve port (b), and the refrigerant can be by the compressor (102) through the four-way
Valve (104) is flowed in the indoor heat exchanger (106), the refrigerant that will can be also flowed out by the first outlet and the room
The refrigerant mixing of external heat exchanger (108) outflow flow to second separator (110).
8. low-temperature air-conditioning system according to any one of claim 1 to 7, it is characterised in that
The refrigerant includes：The mixed non-azeotropic refrigerant that the different refrigerant of various boiling points is mixed.
9. low-temperature air-conditioning system according to any one of claim 1 to 7, it is characterised in that
The throttling arrangement includes：Electromagnetic type expansion valve, electrodynamic type expansion valve.
10. a kind of air-conditioning, it is characterised in that including the low-temperature air-conditioning system any one of claim 1 to 9.
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| CN201611046317.4A CN106766325B (en) | 2016-11-22 | 2016-11-22 | Low-temperature air-conditioning system and air-conditioning |
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| CN109974321A (en) * | 2019-03-18 | 2019-07-05 | 嘉兴学院 | A kind of compound liquid storage device of rotary type intelligent freezer compressor |
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| CN106766325B (en) | 2019-08-06 |
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