CN110274401A - The two-stage compression circulation system of injector pressurization - Google Patents
The two-stage compression circulation system of injector pressurization Download PDFInfo
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- CN110274401A CN110274401A CN201910562469.7A CN201910562469A CN110274401A CN 110274401 A CN110274401 A CN 110274401A CN 201910562469 A CN201910562469 A CN 201910562469A CN 110274401 A CN110274401 A CN 110274401A
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- valve
- valve port
- heat exchanger
- injector
- reversal valve
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses the two-stage compression circulation systems of injector pressurization, belong to vapor compression heat pump field；The technical problem to be solved is that provide a kind of centre can easily be carried out refrigeration with tonifying Qi and be heated the two-stage compression circulation system of the injector pressurization switched over；Solve the technical solution of technical problem use are as follows: the two-stage compression circulation system of injector pressurization, in traditional secondary compression heat pump circulation, increase injector and gas-liquid separation device, reversal valve, second vapor injection is realized using gas-liquid separation device, the switching of cooling and warming is realized using reversal valve, reduces delivery temperature, power consumption is reduced simultaneously, realizes energy-saving and emission-reduction；It the composite can be widely applied to vapor compression heat pump field.
Description
Technical field
The two-stage compression circulation system of injector pressurization of the present invention, belongs to vapor compression heat pump technical field.
Background technique
For air source heat pump compared with other ways of heating such as electric heating, efficiency of energy utilization is higher, it can be in summer
Refrigeration, and can heat in winter, it is able to satisfy the demand in two season of summer in winter, and be to produce by low-temperature heat source of air higher than environment temperature
The hot water of degree or the heating combined equipment of hot wind, do not need fire coal, natural gas etc., therefore receive more and more attention, heat pump/refrigerating
The essence of circulation is all using compressor power consumption as cost, and realization is absorbed heat from low temperature environment, and will caloric receptivity and compressor power consumption
The heat of conversion is discharged into hot environment, so reducing compressor power consumption, the energy consumption ratio of raising system operation is energy-saving and emission-reduction
An urgent demand.
Currently, when under the special operation condition that winter outside air temperature is relatively low or summer outdoor temperature is higher, traditional air
Compressor pressure ratio constantly increases in the heat pump/refrigerating system of source, and the delivery temperature of compressor outlet increases, and it is bright to will lead to system performance
Aobvious decline, compressor can be out of service when excessive discharge temperature, therefore, how to allow air source heat pump system in extraneous harsh conditions
It is lower that higher heating efficiency is kept to become urgent problem, when environment temperature is lower, in order to expand traditional heat
The use scope of pump, at present using it is more be two-stage vapor compression heat pump/refrigeration system, but existing two stages of compression system
System cannot achieve second vapor injection and recycling restriction loss, can only carry out single refrigeration or heating, can not carry out cutting for mode
It changes.
Summary of the invention
The invention overcomes the deficiencies of the prior art, and provides a kind of centre can with tonifying Qi, facilitate carry out refrigeration with
The two-stage compression circulation system of the injector pressurization of heating mode switching.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: the two-stage compression circulation of injector pressurization
System, including high pressure stage compressor, low-pressure stage compressor, intermediate mixing arrangement, heat exchanger, injector, high pressure stage compressor go out
Mouth is connected with heat exchanger import, and heat exchanger exit is connected with injector import, injector outlet and low-pressure stage compressor inlet phase
Even, low pressure stage compressor outlet is connected with high pressure stage compressor import, the pipe that low-pressure stage compressor is connected with high-pressure unit compressor
Intermediate mixing arrangement is provided on road；
Heat exchanger includes ambient side heat exchanger and user side heat exchanger, and ambient side heat exchanger plays the work of evaporator in a heating mode
With playing condenser under refrigeration mode, user side heat exchanger plays condenser in a heating mode, under refrigeration mode
Play evaporator, high pressure stage compressor and heat exchanger connecting place are provided with the first reversal valve, and heat exchanger is connected with injector
Pipeline on be provided with the first gas-liquid separation device, the second gas-liquid is provided on the pipeline that injector is connected with low-pressure stage compressor
Separator.
First reversal valve is three-way diverter valve, and the first valve port a1 and hiigh pressure stage of first reversal valve compress
Machine outlet is connected, and the second valve port a2 of first reversal valve is connected with ambient side heat exchanger, first reversal valve
Third valve port a3 is connected with user side heat exchanger；
In cooling mode, the first valve port a1 of first reversal valve is connected to the second valve port a2, and third valve port a3 is closed,
In a heating mode, the first valve port a1 of first reversal valve is connected to third valve port a3, and the second valve port a2 is closed.
First throttling device is provided on the pipeline that first reversal valve is connected with user side heat exchanger.
The first gas-liquid separation device gaseous state outlet is connected with intermediate mixing arrangement, liquid outlet and injector phase
Even.
The second gas-liquid separation device gaseous state outlet is connected with low-pressure stage compressor, the second gas-liquid separation dress
It sets liquid outlet to be connected with heat exchanger, is provided with second on the pipeline that second gas-liquid separation device is connected with heat exchanger and changes
To valve, second reversal valve is three-way diverter valve, the first valve port a1 of second reversal valve and the second gas-liquid separation
The liquid outlet of device is connected, and the second valve port a2 of second reversal valve is connected with ambient side heat exchanger import, described
It is provided with third throttling set on the pipeline that second valve port a2 of the second reversal valve is connected with ambient side heat exchanger, described second
The third valve port a3 of reversal valve is connected with user side heat exchanger import；
In cooling mode, the first valve port a1 of second reversal valve is connected to third valve port a3, and the second valve port a2 is closed,
In a heating mode, the first valve port a1 of second reversal valve is connected to the second valve port a2, and third valve port a3 is closed.
Third reversal valve, the third commutation are provided on the pipeline that the user side heat exchanger is connected with injector
Valve is three-way diverter valve, and the first valve port a1 of the third reversal valve is connected with user side heat exchanger exit, the third
Second valve port a2 of reversal valve is connected with the first gas-liquid separator import, the third valve port a3 of the third reversal valve and injection
Device import is connected with ambient side heat exchanger exit；
In cooling mode, the first valve port a1 of the third reversal valve is connected to third valve port a3, and the second valve port a2 is closed,
In a heating mode, the first valve port a1 of the third reversal valve is connected to the second valve port a2, and third valve port a3 is closed.
First is provided on the pipeline that the third valve port a3 of the third reversal valve is connected with ambient side heat exchanger exit
Switch valve.
Second is provided on the pipeline that second valve port a2 of the third reversal valve is connected with the first gas-liquid separation device
Throttling set is provided with second switch valve on the pipeline that the ambient side heat exchanger is connected with the first gas-liquid separation device.
Compared with the prior art, the invention has the following beneficial effects: can be effective using injector and gas-liquid separation device
Recycling throttling process in expansion work, restriction loss can be effectively reduced, promote the inlet pressure of compressor, to reduce
The power consumption of compressor can effectively save electric energy, while use three-way diverter valve, it may be convenient to switching refrigeration and heating mould
The gas isolated can be supplemented in compressor by formula, gas-liquid separation device, reduced the pressure ratio and delivery temperature of compressor, made
System has good heating effect in the case where outdoor low temperature, improves systematic energy efficiency ratio, reduces energy consumption, reduces running cost
With.
Detailed description of the invention
Following further describes the present invention with reference to the drawings.
Fig. 1 is system connection schematic diagram of the invention.
Fig. 2 is that heating of the invention recycles schematic diagram.
Fig. 3 is refrigeration cycle schematic diagram of the invention.
In figure, 1 it is high pressure stage compressor, 2 is low-pressure stage compressor, 3 is intermediate mixing arrangement, 4 is injector, 5 is ring
Border side heat exchanger 6 is user side heat exchanger, 7 be the first reversal valve, 8 be the first gas-liquid separation device, 9 be the second gas-liquid separation
Device, 10 be the second reversal valve, 11 be third reversal valve, 12 be first switch valve, 13 be second switch valve, 14 be first throttle
Device, 15 be second throttling device, 16 be third throttling set.
Specific embodiment
As shown in Figure 1, the present invention is the two-stage compression circulation system of injector pressurization, including high pressure stage compressor 1, low pressure
Grade compressor 2, intermediate mixing arrangement 3, heat exchanger, injector 4, the outlet of high pressure stage compressor 1 are connected with heat exchanger import, exchange heat
Device outlet is connected with 4 import of injector, and the outlet of injector 4 is connected with 2 import of low-pressure stage compressor, and low-pressure stage compressor 2 exports
It is connected with 1 import of high pressure stage compressor, is provided on the pipeline that low-pressure stage compressor 2 is connected with high-pressure unit compressor 1 intermediate mixed
It attaches together and sets 3；Heat exchanger includes ambient side heat exchanger 5 and user side heat exchanger 6, and high pressure stage compressor 1 is set with heat exchanger connecting place
Be equipped with the first reversal valve 7, be provided with the first gas-liquid separation device 8 on the pipeline that heat exchanger is connected with injector 4, injector 4 with
The second gas-liquid separation device 9 is provided on the connected pipeline of low-pressure stage compressor 2, the first reversal valve 7 is three-way diverter valve, described
The first valve port a1 and high pressure stage compressor 1 outlet of the first reversal valve 7 be connected, the second valve port of first reversal valve 7
A2 is connected with ambient side heat exchanger 5, and the third valve port a3 of first reversal valve 7 is connected with user side heat exchanger 6；Freezing
Under mode, the first valve port a1 of first reversal valve 7 is connected to the second valve port a2, and third valve port a3 is closed, in heating mould
Under formula, the first valve port a1 of first reversal valve 7 is connected to third valve port a3, and the second valve port a2 is closed, the first reversal valve 7
First throttling device 14 is provided on the pipeline being connected with user side heat exchanger 6, the outlet of 8 gaseous state of the first gas-liquid separation device is in
Between mixing arrangement 3 be connected, liquid outlet is connected with injector 4,9 gaseous state of the second gas-liquid separation device export and low-pressure stage compressor
2 be connected, 9 liquid outlet of the second gas-liquid separation device is connected with heat exchanger, second gas-liquid separation device 9 with change
It is provided with the second reversal valve 10 on the connected pipeline of hot device, second reversal valve 10 is three-way diverter valve, described second
First valve port a1 of reversal valve 10 is connected with the liquid outlet of the second gas-liquid separation device 9, and the of second reversal valve 10
Two valve port a2 are connected with 5 import of ambient side heat exchanger, the second valve port a2 and ambient side heat exchanger of second reversal valve 10
Third throttling set 16, the third valve port a3 and user side heat exchanger of second reversal valve 10 are provided on connected pipeline
6 imports are connected；In cooling mode, the first valve port a1 of second reversal valve 10 is connected to third valve port a3, the second valve
Mouth a2 is closed, and in a heating mode, the first valve port a1 of second reversal valve 10 is connected to the second valve port a2, third valve port
A3 is closed, and is provided with third reversal valve 11, the third reversal valve on the pipeline that user side heat exchanger 6 is connected with injector 4
11 be three-way diverter valve, and the first valve port a1 of the third reversal valve 11 is connected with the outlet of user side heat exchanger 6, described the
Second valve port a2 of three reversal valves 11 is connected with 8 import of the first gas-liquid separator, the third valve port of the third reversal valve 11
A3 is connected with 4 import of injector and the outlet of ambient side heat exchanger 5；In cooling mode, the of the third reversal valve 11
One valve port a1 is connected to third valve port a3, and the second valve port a2 is closed, in a heating mode, the first of the third reversal valve 11
Valve port a1 is connected to the second valve port a2, and third valve port a3 is closed, the third valve port a3 and ambient side heat exchanger 5 of third reversal valve 11
First switch valve 12, the second valve port a2 of third reversal valve 11 and the first gas-liquid separation device are provided on the connected pipeline in outlet
It is provided with second throttling device 15 on 8 connected pipelines, the ambient side heat exchanger 5 is connected with the first gas-liquid separation device 8
Pipeline on be provided with second switch valve 13.
Apparatus of the present invention have two kinds of operating conditions of refrigeration and heating, and solid line indicates the pipeline of refrigerant circulation in Fig. 2 and Fig. 3, empty
Line indicates the pipeline that refrigerant does not circulate.
In cooling condition, first switch valve, the third valve port a3 of the first reversal valve, the second reversal valve the second valve port
The second valve port a2 closing of a2, third reversal valve, second switch valve are opened, the commutation of the first valve port a1 of the first reversal valve and first
Second valve port a2 of valve is connected to, and the third valve port a3 connection of the first valve port a1 and the second reversal valve of the second reversal valve, third are changed
The third valve port a3 of the first valve port a1 and third reversal valve to valve are connected to.Under such operating condition, ambient side heat exchanger 5 plays condensation and makees
With user side heat exchanger plays evaporation.The high temperature and high pressure gaseous refrigerant come out from high pressure stage compressor passes through the first commutation
Valve enters in ambient side heat exchanger, and heat exchange becomes liquid refrigerant, enters later by third throttling set and second switch valve
In first gas-liquid separation device, the gaseous refrigerant isolated enters in intermediate mixing arrangement, and liquid refrigerant is as primary stream
Body enters in injector, the low-temperature low-pressure refrigerant gas that injection comes out from user side heat exchanger in injector, two bursts of systems
Cryogen is sufficiently mixed in injector and after adherence pressure, into the second gas-liquid separation device, is separated into saturated liquid refrigeration
Agent and saturation gaseous refrigerant, saturated liquid refrigerant pass through the second reversal valve, and first throttling device enters user side heat exchanger
Middle heat exchange becomes gaseous refrigerant, completes externally refrigeration, is entered in injector by third reversal valve as a secondary fluid later,
Saturation gaseous refrigerant enters low-pressure stage compressor, by intermediate mixing arrangement, will come from low-pressure stage compressor and the first gas-liquid
After saturation gaseous refrigerant mixing in separator, returns in high pressure stage compressor, complete refrigeration cycle.
In heating condition, second switch valve, first reversal valve the second valve port a2, the third valve port a3 of the second reversal valve,
The third valve port a3 of third reversal valve is closed, and first switch valve is opened, the first valve port a1 and third valve port a3 of the first reversal valve
Connection, the first valve port a1 of the second reversal valve are connected to the second valve port a2, the first valve port a1 of third reversal valve and the second valve port
A2 connection.Under such operating condition, ambient side heat exchanger plays the role of evaporator, and user side heat exchanger plays condenser.From height
The high temperature and high pressure gaseous refrigerant come out in compressor of arbitrarily downgrading enters user side and changes by the first reversal valve and first throttling device
In hot device, condensing heat release in user side heat exchanger becomes liquid refrigerant, then passes through third reversal valve, second throttling device
Into in the first gas-liquid separation device, in the first gas-liquid separation device, the gaseous refrigerant isolated enters intermediate mixing dress
It sets, liquid refrigerant enters in injector as a fluid, the low-temperature low-pressure refrigerant that injection comes out from ambient side heat exchanger
Gas after two strands of refrigerants are sufficiently mixed adherence pressure in injector, into the second gas-liquid separation device, is separated into saturation
Liquid refrigerant and saturation gaseous refrigerant, saturated liquid refrigerant pass through third reversal valve, and third throttling set enters environment
In the heat exchanger of side, heat absorption is evaporated to gaseous refrigerant in ambient side heat exchanger, then by first switch valve as Secondary Flow
Body enters in injector, and saturation gaseous refrigerant enters in low-pressure stage compressor, by intermediate mixing arrangement, will come from low-pressure stage
It after saturation gaseous refrigerant mixing in compressor and the first gas-liquid separation device, returns in high pressure stage compressor, completes entire
Heating circulation.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Various change out.
Claims (8)
1. the two-stage compression circulation system of injector pressurization, it is characterised in that: including high pressure stage compressor (1), low-pressure stage compression
Machine (2), intermediate mixing arrangement (3), heat exchanger, injector (4), high pressure stage compressor (1) outlet are connected with heat exchanger import, change
Hot device outlet is connected with injector (4) import, and injector (4) outlet is connected with low-pressure stage compressor (2) import, low-pressure stage compression
Machine (2) outlet is connected with high pressure stage compressor (1) import, the pipeline that low-pressure stage compressor (2) is connected with high-pressure unit compressor (1)
On be provided with intermediate mixing arrangement (3)；
Heat exchanger includes ambient side heat exchanger (5) and user side heat exchanger (6), high pressure stage compressor (1) and heat exchanger connecting place
It is provided with the first reversal valve (7), is provided on the pipeline that heat exchanger is connected with injector (4) the first gas-liquid separation device (8), sprayed
The second gas-liquid separation device (9) are provided on the pipeline that emitter (4) is connected with low-pressure stage compressor (2).
2. the two-stage compression circulation system of injector pressurization according to claim 1, it is characterised in that: described first is changed
It is three-way diverter valve to valve (7), the first valve port a1 of first reversal valve (7) is connected with high pressure stage compressor (1) outlet,
Second valve port a2 of first reversal valve (7) is connected with ambient side heat exchanger (5), and the of first reversal valve (7)
Three valve port a3 are connected with user side heat exchanger (6)；
In cooling mode, the first valve port a1 of first reversal valve (7) is connected to the second valve port a2, and third valve port a3 is closed
It closes, in a heating mode, the first valve port a1 of first reversal valve (7) is connected to third valve port a3, and the second valve port a2 is closed
It closes.
3. the two-stage compression circulation system of injector pressurization according to claim 2, it is characterised in that: described first is changed
First throttling device (14) are provided on the pipeline being connected to valve (7) with user side heat exchanger (6).
4. the two-stage compression circulation system of injector pressurization according to claim 1, it is characterised in that: first gas
The outlet of liquid separating apparatus (8) gaseous state is connected with intermediate mixing arrangement (3), and liquid outlet is connected with injector (4).
5. the two-stage compression circulation system of injector according to claim 2 or 4 pressurization, it is characterised in that: described the
The outlet of two gas-liquid separation devices (9) gaseous state is connected with low-pressure stage compressor (2), described the second gas-liquid separation device (9) liquid
Outlet is connected with heat exchanger, is provided with the second commutation on the pipeline that second gas-liquid separation device (9) is connected with heat exchanger
Valve (10), second reversal valve (10) are three-way diverter valve, the first valve port a1 of second reversal valve (10) and the
The liquid outlet of two gas-liquid separation devices (9) is connected, and the second valve port a2 and ambient side of second reversal valve (10) exchange heat
Device (5) import is connected, and is arranged on the pipeline that the second valve port a2 of second reversal valve (10) is connected with ambient side heat exchanger
Have third throttling set (16), the third valve port a3 of second reversal valve (10) is connected with user side heat exchanger (6) import；
In cooling mode, the first valve port a1 of second reversal valve (10) is connected to third valve port a3, the second valve port a2
It closes, in a heating mode, the first valve port a1 of second reversal valve (10) is connected to the second valve port a2, third valve port a3
It closes.
6. the two-stage compression circulation system of injector pressurization according to claim 1, it is characterised in that: the user side
It is provided on the pipeline that heat exchanger (6) is connected with injector (4) third reversal valve (11), the third reversal valve (11) is three
First valve port a1 of logical reversal valve, the third reversal valve (11) is connected with user side heat exchanger (6) outlet, the third
Second valve port a2 of reversal valve (11) is connected with the first gas-liquid separator (8) import, the third of the third reversal valve (11)
Valve port a3 is connected with injector (4) import and ambient side heat exchanger (5) outlet；
In cooling mode, the first valve port a1 of the third reversal valve (11) is connected to third valve port a3, the second valve port a2
It closes, in a heating mode, the first valve port a1 of the third reversal valve (11) is connected to the second valve port a2, third valve port a3
It closes.
7. the two-stage compression circulation system of injector pressurization according to claim 6, it is characterised in that: the third is changed
First switch valve (12) are provided on the pipeline being connected to the third valve port a3 of valve (11) with ambient side heat exchanger (5) outlet.
8. the two-stage compression circulation system of injector pressurization according to claim 6, it is characterised in that: the third is changed
Second throttling device (15) are provided on the pipeline being connected to the second valve port a2 of valve (11) with the first gas-liquid separation device (8),
Second switch valve (13) are provided on the pipeline that the ambient side heat exchanger (5) is connected with the first gas-liquid separation device (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910562469.7A CN110274401A (en) | 2019-06-26 | 2019-06-26 | The two-stage compression circulation system of injector pressurization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910562469.7A CN110274401A (en) | 2019-06-26 | 2019-06-26 | The two-stage compression circulation system of injector pressurization |
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| CN110274401A true CN110274401A (en) | 2019-09-24 |
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ID=67963327
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| CN201910562469.7A Pending CN110274401A (en) | 2019-06-26 | 2019-06-26 | The two-stage compression circulation system of injector pressurization |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4718245A (en) * | 1986-05-06 | 1988-01-12 | Steenburgh Leon R Jr | Refrigeration system with bypass valves |
| CN206875754U (en) * | 2017-05-31 | 2018-01-12 | 珠海格力电器股份有限公司 | Using the heat pump and air-conditioning equipment of injector |
| CN108800678A (en) * | 2018-08-07 | 2018-11-13 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN208779749U (en) * | 2018-08-07 | 2019-04-23 | 珠海格力电器股份有限公司 | Air-conditioning system |
-
2019
- 2019-06-26 CN CN201910562469.7A patent/CN110274401A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4718245A (en) * | 1986-05-06 | 1988-01-12 | Steenburgh Leon R Jr | Refrigeration system with bypass valves |
| CN206875754U (en) * | 2017-05-31 | 2018-01-12 | 珠海格力电器股份有限公司 | Using the heat pump and air-conditioning equipment of injector |
| CN108800678A (en) * | 2018-08-07 | 2018-11-13 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN208779749U (en) * | 2018-08-07 | 2019-04-23 | 珠海格力电器股份有限公司 | Air-conditioning system |
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Application publication date: 20190924 |
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