CN108131855A - Cooling cycle system and with its air conditioner - Google Patents
Cooling cycle system and with its air conditioner Download PDFInfo
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- CN108131855A CN108131855A CN201711399601.4A CN201711399601A CN108131855A CN 108131855 A CN108131855 A CN 108131855A CN 201711399601 A CN201711399601 A CN 201711399601A CN 108131855 A CN108131855 A CN 108131855A
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- compressor
- cooling cycle
- cycle system
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- gas
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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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
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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
- F25B31/00—Compressor arrangements
-
- 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
-
- 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
Abstract
The present invention provides a kind of cooling cycle system and there is its air conditioner, cooling cycle system includes：Evaporator；Compressor, the air entry of compressor are connected with the outlet of evaporator, wherein, compressor has gas supplementing opening；Gas supplementary structure, the gas outlet of gas supplementary structure are connected with gas supplementing opening；Gas cooler, the import of gas cooler are connected with the outlet of compressor；Expanding machine, the import of expanding machine are connected with the outlet of gas cooler, and the outlet of expanding machine is connected with the import of evaporator.The cooling cycle system of the present invention solves the problems, such as that cooling cycle system energy-saving effect of the prior art is poor.
Description
Technical field
The present invention relates to field of refrigeration, in particular to a kind of cooling cycle system and with its air conditioner.
Background technology
With the aggravation of Ozone depletion and global warming trend, the application of environmentally friendly refrigerant obtains extensive concern
With development.Wherein, CO2 refrigerants belong to natural refrigerant, and atmospheric ozone layer loss index (ODP) is zero, greenhouse effects index
(GWP) it is 1, it is harmless to human ecological environment.Meanwhile CO2 has very excellent thermal performance, and viscosity is low, latent heat is big etc., tool
There is good application prospect.
CO2 uses trans critical cycle form more since critical-temperature is only 31 DEG C in cooling/heating pump circulation.CO2 is across facing
Boundary's cycle is primarily present high operating pressure, throttling and crosses the shortcomings that heat loss is big.Such as in field of air conditioning, in typical case operating mode
Under, pressure at expulsion commonly reaches 10MPa, and pressure of inspiration(Pi) is about 1-4MPa, and huge pressure difference is to the reliability of Parts of Compressor
It has adverse effect on.Throttling causes greatly CO2 cycle efficienies low with heat loss is crossed, and it is big that the coefficient of performance lowly seriously restricts CO2
The application of range.
How to reduce the operation pressure of compressor in CO2 cooling/heating pump circulations and cross heat loss, how to reduce restriction loss
So as to improve CO2 performance of refrigerant systems coefficients, this is the emphasis and urgent problem to be solved of CO2 refrigeration cycle researchs.
Invention content
It is a primary object of the present invention to provide a kind of cooling cycle system and with its air conditioner, to solve existing skill
The problem of cooling cycle system energy-saving effect in art is poor.
To achieve these goals, according to an aspect of the invention, there is provided a kind of cooling cycle system, including：It steams
Send out device；Compressor, the air entry of compressor are connected with the outlet of evaporator, wherein, compressor has gas supplementing opening；Tonifying Qi knot
Structure, the gas outlet of gas supplementary structure are connected with gas supplementing opening；Gas cooler, the import of gas cooler and the outlet phase of compressor
Connection；Expanding machine, the import of expanding machine are connected with the outlet of gas cooler, the outlet of expanding machine and the import phase of evaporator
Connection.
Further, gas supplementary structure is flash vessel, and the import of flash vessel is connected with the outlet of expanding machine, and flash vessel goes out
Liquid mouth is connected with the import of evaporator.
Further, compressor further includes：Throttling set, throttling set are arranged on the liquid outlet and evaporator of flash vessel
On pipeline between import.
Further, compressor includes：First order compressor, the air entry of first order compressor and the outlet phase of evaporator
Connection；High stage compressor, the air inlet of high stage compressor are connected with the exhaust outlet of first order compressor, second level compression
The outlet of machine is connected with the import of gas cooler；Wherein, gas supplementing opening is arranged on the air inlet and first of high stage compressor
Between the exhaust outlet of grade compressor.
Further, the swept volume of first order compressor is VA, and the swept volume of high stage compressor is VB, wherein,
0.7≤VB/VA≤1.4。
Further, the swept volume of first order compressor is VA, and the swept volume of expanding machine is VC, wherein, 0.05≤
VC/VA≤0.4。
Further, the swept volume of expanding machine is VC, and the delivery space of expanding machine is VD, wherein, 1.5≤VD/VC≤
4.5。
Further, first order compressor and high stage compressor are integral type compressor.
Further, first order compressor and high stage compressor coaxial arrangement.
Further, first order compressor, high stage compressor and expanding machine coaxial arrangement.
Further, split-compressor subject to compressor.
Further, compressor is centrifugal compressor, screw compressor or scroll compressor.
According to another aspect of the present invention, a kind of air conditioner is provided, including cooling cycle system, cooling cycle system is
Above-mentioned cooling cycle system.
The cooling cycle system of the present invention passes through evaporator, compressor, gas supplementary structure, gas cooler and expansion function
Enough effectively reduce the energy loss in cooling cycle system.Wherein, the air entry of compressor is connected with the outlet of evaporator, mends
The gas outlet of depressed structure is connected with the gas supplementing opening of compressor, and the import of gas cooler is connected with the outlet of compressor, swollen
The import of swollen machine is connected with the outlet of gas cooler, and the outlet of expanding machine is connected with the import of evaporator.
During carrying out practically, the low-temperature low-pressure refrigerant in evaporator is compressed to high temperature and pressure refrigeration through compressor
Agent, during compressor compresses, gas supplementary structure fills into gaseous refrigerant into compressor.Due to the presence of expanding machine, in reality
In existing refrigerant expansion process, the acting ability lost in refrigerant expansion process can be effectively recycled, so as to reduce refrigeration cycle
The input power of system improves the coefficient of performance of cooling cycle system, so as to improve the energy saving of cooling cycle system
Effect solves the problems, such as that cooling cycle system energy-saving effect of the prior art is poor.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 shows the structure diagram of one embodiment of cooling cycle system according to the present invention；
Fig. 2 shows the structure diagrams of second embodiment of cooling cycle system according to the present invention；
Fig. 3 shows the structure diagram of the third embodiment of cooling cycle system according to the present invention；
Fig. 4 shows the structure diagram of the 4th embodiment of cooling cycle system according to the present invention；
Fig. 5 shows the pressure-enthalpy chart of the cooling cycle system of the present invention.
Wherein, above-mentioned attached drawing is marked including the following drawings：
10th, evaporator；20th, compressor；21st, first order compressor；22nd, high stage compressor；30th, gas supplementary structure；40th, it is swollen
Swollen machine；50th, gas cooler；60th, throttling set.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
The present invention provides a kind of cooling cycle systems, please refer to Fig.1 to Fig. 4, cooling cycle system includes：Evaporator
10；Compressor 20, the air entry of compressor 20 are connected with the outlet of evaporator 10, wherein, compressor 20 has gas supplementing opening；It mends
Depressed structure 30, the gas outlet of gas supplementary structure 30 are connected with gas supplementing opening；Gas cooler 50, the import of gas cooler 50 and pressure
The outlet of contracting machine 20 is connected；Expanding machine 40, the import of expanding machine 40 are connected with the outlet of gas cooler 50, expanding machine 40
Outlet be connected with the import of evaporator 10.
The present invention cooling cycle system by evaporator 10, compressor 20, gas supplementary structure 30, gas cooler 50 and
Expanding machine 40 can effectively reduce the energy loss in cooling cycle system.Wherein, the air entry of compressor 20 and evaporator 10
Outlet be connected, the gas outlet of gas supplementary structure 30 is connected with the gas supplementing opening of compressor 20, the import of gas cooler 50 with
The outlet of compressor 20 is connected, and the import of expanding machine 40 is connected with the outlet of gas cooler 50, the outlet of expanding machine 40
Import with evaporator 10 is connected.
During carrying out practically, the low-temperature low-pressure refrigerant 1 in evaporator 10 is compressed to high temperature and pressure through compressor 20
Refrigerant 4, during compressor compresses, gas supplementary structure 30 fills into gaseous refrigerant 7 into compressor 20.Due to expanding machine 40
Presence, in refrigerant expansion process is realized, the acting ability lost in refrigerant expansion process can be effectively recycled, so as to drop
The input power of low cooling cycle system improves the coefficient of performance of cooling cycle system, so as to improve refrigeration cycle
The energy-saving effect of system solves the problems, such as that cooling cycle system energy-saving effect of the prior art is poor.
In the present embodiment, using gaseous refrigerant, externally acting disappears progress adiabatic expansion expanding machine 40 in expanding machine 40
The interior energy of gas consumption body in itself is greatly lowered the pressure and temperature of gas and achievees the purpose that refrigeration and cooling.
Gas-liquid separation, tonifying Qi are carried out to the middle compression refrigerant 6 of gas-liquid two-phase formed in expanding machine 40 in order to realize
Structure 30 is flash vessel, and the import of flash vessel is connected with the outlet of expanding machine 40, liquid outlet and the evaporator 10 of flash vessel
Import is connected.
In the present embodiment, by the way that gas supplementary structure 30 is set as flash vessel, wherein, import and the expanding machine 40 of flash vessel
Outlet be connected, the liquid outlet of flash vessel is connected with the import of evaporator 10.Thus by the gaseous refrigerant 7 in flash vessel
Gas supplementing opening has been sent to, and liquid refrigerant 8 is entered in evaporator 10.
Preferably, as shown in Figures 1 to 4, compressor 20 further includes：Throttling set 60, throttling set 60 are arranged on flash distillation
On pipeline between the import of the liquid outlet and evaporator 10 of device.
In the present embodiment, liquid refrigerant 8 throttles by throttling set 60 forms the gas-liquid two-phase refrigeration of low-temp low-pressure
Agent 9.
For the concrete form of compressor, as shown in Figure 1 to Figure 3, compressor 20 includes：First order compressor 21, first
The air entry of grade compressor 21 is connected with the outlet of evaporator 10；High stage compressor 22, the air inlet of high stage compressor 22
Mouth is connected with the exhaust outlet of first order compressor 21, and the outlet of high stage compressor 22 is connected with the import of gas cooler 50
It is logical；Wherein, gas supplementing opening is arranged between the air inlet of high stage compressor 22 and the exhaust outlet of first order compressor 21.
In the present embodiment, pressure gas 2 during low-temperature low-pressure refrigerant 1 is formed after the compression of first order compressor 21, middle pressure
The gaseous refrigerant 7 isolated in exhaust 2 and evaporator 10 is mixed into middle compression refrigerant 3, then compress through high stage compressor 22
To high-temperature high-pressure refrigerant 4, heat formation high-pressure refrigerant 5 is discharged under the action of gas cooler 50, expanding machine 40 is realized
Refrigerant expands, and forms the middle compression refrigerant 6 of gas-liquid two-phase, two phase refrigerant realizes gas-liquid separation, gaseous state system in flash vessel
Cryogen 7 is filled between two-stage compressor, and liquid refrigerant 8 further throttles through throttling set 60 and forms the gas-liquid two of low-temp low-pressure
Phase refrigerant 9, and then absorption refrigeration in the vaporizer 10 form low-pressure gaseous refrigerant 1.
Preferably, the swept volume of first order compressor 21 is VA, and the swept volume of high stage compressor 22 is VB,
In, 0.7≤VB/VA≤1.4.
Preferably, the swept volume of first order compressor 21 is VA, and the swept volume of high stage compressor 22 is VB,
In, 0.9≤VB/VA≤1.2.
In the present embodiment, by the pressure differential of reasonable distribution first order compressor 21 and high stage compressor 22, make pressure
It contracts more efficient, operating is more steady.
Preferably, the swept volume of first order compressor 21 is VA, and the swept volume of expanding machine 40 is VC, wherein, 0.05
≤VC/VA≤0.4。
Preferably, the swept volume of first order compressor 21 is VA, and the swept volume of expanding machine 40 is VC, wherein, 0.1≤
VC/VA≤0.25。
In the present embodiment, pass through the swept volume of reasonable distribution first order compressor 21 and expanding machine 40 so that first
The discharge matching of grade compressor 21 and expanding machine 40 is better, is conducive to improve cycle efficiency.
Preferably, the swept volume of expanding machine 40 is VC, and the delivery space of expanding machine 40 is VD, wherein, 1.5≤VD/VC
≤4.5。
Preferably, the swept volume of expanding machine 40 is VC, and the delivery space of expanding machine 40 is VD, wherein, 2≤VD/VC≤
4。
In the present embodiment, by the swept volume and delivery space of reasonable distribution expanding machine 40, discharge expanding machine 40
The outlet of refrigerant state and gas supplementary structure 30 goes out liquid status matching effect more preferably, improves expansion efficiency, improves cycle efficiency.
In order to which rational distribution pressure is poor, Gas-supplying enthalpy-increasing effect is improved, realizes high efficiente callback of the expanding machine to expansion work, the
The swept volume of stage compressor 21 is VA, and the swept volume of high stage compressor 22 is VB, wherein, 0.7≤VB/VA≤1.4,
Further, 0.9≤VB/VA≤1.2.The swept volume of expanding machine 40 is VC, wherein, 0.05≤VC/VA≤0.4, further
Ground, 0.1≤VC/VA≤0.25.The delivery space of expanding machine 40 is VD, wherein, 1.5≤VD/VC≤4.5, further, 2≤
VD/VC≤4。
For one embodiment of this cooling cycle system, as shown in Figure 1, first order compressor 21 and second level compression
Machine 22 is independent compressor.
For second embodiment of this cooling cycle system, as shown in Fig. 2, first order compressor 21 and second level compression
Machine 22 is integral type compressor.
In the present embodiment, first order compressor 21 and high stage compressor 22 are integral type compressor, so as to improve the
The overall operation efficiency of stage compressor 21 and high stage compressor 22, and reduce cost, save space.
Preferably, first order compressor 21 and high stage compressor 22 are coaxially disposed.
For the third embodiment of this cooling cycle system, as shown in figure 3, first order compressor 21, second level compression
Machine 22 and expanding machine 40 are integral type compressor.
In the present embodiment, first order compressor 21, high stage compressor 22 and expanding machine 40 are an integral structure, from
And the overall operation effect of first order compressor 21, high stage compressor 22 and expanding machine 40 is improved, and substantially solve space,
Make circulating system structure simpler, more energy efficient.
Preferably, first order compressor 21, high stage compressor 22 and expanding machine 40 are coaxially disposed.
For the 4th embodiment of this cooling cycle system, as shown in figure 4, split-compressor subject to compressor 20.
Optionally, compressor 20 is centrifugal compressor, screw compressor or scroll compressor.
The present invention also provides a kind of air conditioners, and including cooling cycle system, cooling cycle system is followed for above-mentioned refrigeration
Loop system.
In Fig. 5, abscissa is the specific enthalpy h of refrigeration cycle refrigerant, and ordinate is pressure p.1-2 is compressed for the first order, will
Low pressure refrigerant 1 is compressed to middle pressure gas 2；First order compression exhaust 2 is mixed to form middle compression refrigerant 3 with medium pressure gas 7.3-4
It is compressed for the second level, by middle 3 compressor of compression refrigerant to high-pressure refrigerant 4.4-5 is high pressure gas cooling procedure, and refrigerant is put
Heat heats the external world.5-6 is the expansion process of expanding machine 40, recycles expansion work.Two phase refrigerants are realized in flash vessel
It is separated into liquid refrigerant 8 and gaseous refrigerant 7.Liquid refrigerant 8 forms low-temperature low-pressure refrigerant 9,9 after second throttles
The evaporation endothermic in evaporator freezes to the external world, form low-pressure gaseous refrigerant 1.
Wherein, the expansion work that h5-h6 is recycled for refrigeration cycle unit mass refrigerant of the present invention in expanding machine 40, h5-
H8 is the increased refrigerating capacity of refrigeration cycle unit mass refrigerant of the present invention.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
The present invention cooling cycle system by evaporator 10, compressor 20, gas supplementary structure 30, gas cooler 50 and
Expanding machine 40 can effectively reduce the energy loss in cooling cycle system.Wherein, the air entry of compressor 20 and evaporator 10
Outlet be connected, the gas outlet of gas supplementary structure 30 is connected with the gas supplementing opening of compressor 20, the import of gas cooler 50 with
The outlet of compressor 20 is connected, and the import of expanding machine 40 is connected with the outlet of gas cooler 50, the outlet of expanding machine 40
Import with evaporator 10 is connected.
During carrying out practically, the low-temperature low-pressure refrigerant 1 in evaporator 10 is compressed to high temperature and pressure through compressor 20
Refrigerant 4, during compressor compresses, gas supplementary structure 30 fills into gaseous refrigerant 7 into compressor 20.Due to expanding machine 40
Presence, in refrigerant expansion process is realized, the acting ability lost in refrigerant expansion process can be effectively recycled, so as to drop
The input power of low cooling cycle system improves the coefficient of performance of cooling cycle system, so as to improve refrigeration cycle
The energy-saving effect of system solves the problems, such as that cooling cycle system energy-saving effect of the prior art is poor.
The present invention cooling cycle system realize " Two-stage Compression+Gas-supplying enthalpy-increasing+expanding machine " and refrigeration cycle, can be effective
Solve three major issues present in money critical cycle (CO2)：It is poor that Two-stage Compression structure can effectively decompose compressor operating pressure, drop
The low load per stage compressor, and operational efficiency can be promoted；Gas-supplying enthalpy-increasing structure is by mending the exhaust of low-pressure stage compressor
Enter the refrigerant compared with low temperature, reduce the suction temperature of high stage compressor, so as to reduce the delivery temperature of compressor, effectively prevent
The problem of aging of compressor non-metallic component, improved adverse effect of the heat loss to compressor efficiency, at the same tonifying Qi cause into
Entering the refrigerant mass dryness fraction of evaporator reduces, and increases evaporation enthalpy difference, improves refrigerating capacity；Expanding machine structure can effectively recycle refrigeration
The acting ability lost in agent throttling process, so as to reduce the input power of cooling cycle system, improving performance coefficient.
It should be noted that term " first " in the description and claims of this application and above-mentioned attached drawing, "
Two " etc. be the object for distinguishing similar, and specific sequence or precedence are described without being used for.It should be appreciated that it uses in this way
Data can be interchanged in the appropriate case, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product or equipment not
Be necessarily limited to those steps clearly listed or unit, but may include not listing clearly or for these processes, side
The intrinsic other steps of method, product or equipment or unit.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made in opposite description to space used herein above.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of cooling cycle system, which is characterized in that including：
Evaporator (10)；
Compressor (20), the air entry of the compressor (20) are connected with the outlet of the evaporator (10), wherein, the pressure
Contracting machine (20) has gas supplementing opening；
Gas supplementary structure (30), the gas outlet of the gas supplementary structure (30) are connected with the gas supplementing opening；
Gas cooler (50), the import of the gas cooler (50) are connected with the outlet of the compressor (20)；
Expanding machine (40), the import of the expanding machine (40) are connected with the outlet of the gas cooler (50), the expansion
The outlet of machine (40) is connected with the import of the evaporator (10).
2. cooling cycle system according to claim 1, which is characterized in that the gas supplementary structure (30) be flash vessel, institute
The import for stating flash vessel is connected with the outlet of the expanding machine (40), the liquid outlet of the flash vessel and the evaporator (10)
Import be connected.
3. cooling cycle system according to claim 2, which is characterized in that the compressor (20) further includes：
Throttling set (60), the throttling set (60) be arranged on the liquid outlet of the flash vessel and the evaporator (10) into
On pipeline between mouthful.
4. cooling cycle system according to claim 1, which is characterized in that the compressor (20) includes：
First order compressor (21), the air entry of the first order compressor (21) are connected with the outlet of the evaporator (10)
It is logical；
High stage compressor (22), the air inlet of the high stage compressor (22) and the exhaust of the first order compressor (21)
Mouth is connected, and the outlet of the high stage compressor (22) is connected with the import of the gas cooler (50)；
Wherein, the gas supplementing opening is arranged on the air inlet of the high stage compressor (22) and the first order compressor (21)
Between exhaust outlet.
5. cooling cycle system according to claim 4, which is characterized in that the work of the first order compressor (21) is held
Product is VA, and the swept volume of the high stage compressor (22) is VB, wherein, 0.7≤VB/VA≤1.4.
6. cooling cycle system according to claim 4, which is characterized in that the work of the first order compressor (21) is held
Product is VA, and the swept volume of the expanding machine (40) is VC, wherein, 0.05≤VC/VA≤0.4.
7. cooling cycle system according to claim 4, which is characterized in that the swept volume of the expanding machine (40) is
VC, the delivery space of the expanding machine (40) is VD, wherein, 1.5≤VD/VC≤4.5.
8. cooling cycle system according to claim 4, which is characterized in that the first order compressor (21) and described
Split-compressor (22) is integral type compressor.
9. cooling cycle system according to claim 8, which is characterized in that the first order compressor (21) and described
Split-compressor (22) is coaxially disposed.
10. cooling cycle system according to claim 4, which is characterized in that the first order compressor (21), described
Split-compressor (22) and the expanding machine (40) coaxial arrangement.
11. cooling cycle system according to claim 1, which is characterized in that two-stage compression subject to the compressor (20)
Machine.
12. cooling cycle system according to claim 11, which is characterized in that the compressor (20) is centrifugal compressor
Machine, screw compressor or scroll compressor.
13. a kind of air conditioner, including cooling cycle system, which is characterized in that the cooling cycle system is claim 1 to 12
Any one of described in cooling cycle system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711399601.4A CN108131855A (en) | 2017-12-19 | 2017-12-19 | Cooling cycle system and with its air conditioner |
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| CN201711399601.4A CN108131855A (en) | 2017-12-19 | 2017-12-19 | Cooling cycle system and with its air conditioner |
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| CN109282538A (en) * | 2018-11-26 | 2019-01-29 | 珠海格力电器股份有限公司 | Gas-liquid separator and second throttle cooling cycle system |
| CN113251698A (en) * | 2021-04-29 | 2021-08-13 | 太原理工大学 | Large-temperature-difference multistage compression mixed working medium heat pump system suitable for recovering waste heat of power plant |
| CN114857807A (en) * | 2022-04-20 | 2022-08-05 | 南京久鼎环境科技股份有限公司 | For CO 2 Turboexpander of transcritical refrigerating system |
| CN115478920A (en) * | 2019-06-13 | 2022-12-16 | 李华玉 | Reverse single working medium steam combined cycle |
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