CN207317306U - Compression injection transcritical CO_2 circulates cold-hot combined supply system - Google Patents
Compression injection transcritical CO_2 circulates cold-hot combined supply system Download PDFInfo
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- CN207317306U CN207317306U CN201721333638.2U CN201721333638U CN207317306U CN 207317306 U CN207317306 U CN 207317306U CN 201721333638 U CN201721333638 U CN 201721333638U CN 207317306 U CN207317306 U CN 207317306U
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Abstract
The utility model provides a kind of compression injection Trans-critical cycle CO2Cold-hot combined supply system is circulated, it includes CO2Compression section, heating section and refrigerating section.Compression injection Trans-critical cycle CO2Circulation cold-hot combined supply system introduces cold and hot linkage and ejector refrigeration at the same time, is integrated by refrigeration, air-conditioning, for warm preparation high/low temperature domestic hot-water, and practicality is stronger, can obtain higher COP, and reduces comprehensive manufacture cost, reduces pollution；In aspect of performance, heating section can be obtained from 40~90 DEG C of different high/low temperature domestic hot-waters, and the use of the different aspect such as satisfaction drinks, heats, bathing, washing, has a good application prospect.
Description
Technical field
It the utility model is related to a kind of heat pump circulating system, and in particular to a kind of compression injection Trans-critical cycle CO2Circulate cold and hot
Co-feeding system.
Background technology
Carbon dioxide（CO2）As a kind of common natural refrigerant, its is nontoxic, non-combustible, Ozone Depletion Potential（ODP）
For 0, global greenhouse latent energy value（GWP）About 1, but refrigeration system does not produce carbon dioxide, therefore CO in itself2As refrigerant
When its actually active GWP be 0, have environment in terms of friendly.
Based on CO2Above-mentioned advantage, in common natural refrigerant, CO2It is most competitive, have in flammable and toxicity
The place strictly limited, carbon dioxide are ideal as refrigerant.In CO2In trans critical cycle, CO2Put as refrigerant
There are larger temperature glide, the temperature glide in thermal process just to match with required temperature-variable heat source, that is to say, that its work
The temperature rise of the exothermic process and cooling medium of matter matches, and has compared with traditional subcritical circulates isothermal condensation process incomparable
Advantage.
In addition, CO2Critical-temperature is 30.98 DEG C, and critical pressure is 7.38 MPa, is exchanged heat in Trans-critical cycle area and external agency
When do not undergo phase transition, therefore Trans-critical cycle CO2Circulation is exchanged there is no latent heat and condensation process.In view of CO2Higher critical pressure
Power, under the same conditions, Trans-critical cycle CO2Heat pump can heat the water to the temperature of higher.And existing CO2Heat pump system is more
Be be used for heating supply prepare domestic hot-water and and rare its is used for air conditioner refrigerating, therefore, develop it is a kind of realize refrigeration, air-conditioning,
High/low temperature domestic hot-water is prepared in the compression injection Trans-critical cycle CO of one for warm2Circulation cold-hot combined supply system has important show
Sincere justice.
Utility model content
The purpose of this utility model is in view of the deficiencies of the prior art, so as to provide a kind of compression injection Trans-critical cycle CO2Follow
Ring cold-hot combined supply system.
To achieve these goals, technical solution is used by the utility model：
A kind of compression injection Trans-critical cycle CO2Cold-hot combined supply system is circulated, it includes CO2Compression section, heating section and refrigerating section；
The CO2Compression section includes the first gas-liquid separator, Trans-critical cycle CO2Compressor and oil return separator, first gas
The exhaust outlet of liquid/gas separator connects the Trans-critical cycle CO2The entrance of compressor, the Trans-critical cycle CO2The outlet connection institute of compressor
The entrance of oil return separator is stated, the oil export of the oil return separator connects the Trans-critical cycle CO2The oil return opening of compressor；
The heating section includes at least one gas cooler and regenerator, and each gas cooler head and the tail connect, institute
The outlet for stating oil return separator is connected with the entrance of gas cooler described in First, and the gas cooler of end goes out
Mouth connects the gas access of the regenerator；
The refrigerating section includes injector, the second gas-liquid separator, the 3rd gas-liquid separator, the first evaporator, the second steaming
Send out device, heat supplement heat exchanger；The gas vent of the regenerator is respectively communicated with entrance and the institute of second gas-liquid separator
The main jet of injector is stated, the gas vent of the regenerator connects second gas-liquid separator by electric expansion valve
Entrance；The liquid outlet of second gas-liquid separator connects the entrance of first evaporator, the outlet of first evaporator
Connect the receiving chamber of the injector；The entrance of outlet connection the 3rd gas-liquid separator of the injector, the described 3rd
The liquid outlet of gas-liquid separator connects the entrance of second evaporator and the heat supplement heat exchanger by the 4th triple valve
Entrance, described in the outlet of second evaporator and the outlet of the heat supplement heat exchanger are connected by the 5th triple valve
The liquid inlet of regenerator, the liquid outlet of the regenerator connect the entrance of first gas-liquid separator.
Based on above-mentioned, the heating section further includes cold supplement heat exchanger, and the gas cooler at least two is described
The outlet of oil return separator is exchanged heat by the first triple valve and the entrance of gas cooler described in First and cold supplement
The entrance of device is connected, and each gas cooler is connected by triple valve head and the tail, the outlet of cold supplement heat exchanger and
The outlet of the gas cooler of end connects the gas access of the regenerator by the 3rd triple valve, and each gas is cold
But each triple valve between device is respectively communicated with pipeline between the cold supplement heat exchanger and the regenerator.
Based on above-mentioned, the condensed water entry and exit of the two neighboring gas cooler are connected, and the gas of end is cold
But the condensing water inlet of device is connected with the flow export of water inlet water pump.
Based on above-mentioned, the pipeline between the condensed water entry and exit of the two neighboring gas cooler passes through a section respectively
Stream valve is communicated with a water tank, and the condensation-water drain of gas cooler described in First connects a water tank, each water by a throttle valve
Connected between case by throttle valve.
Based on above-mentioned, the condensing water inlet of the gas cooler of end passes through the 4th throttle valve and the water inlet water pump
Flow export be connected.
Based on above-mentioned, the exhaust outlet of the 3rd gas-liquid separator is connected with the exhaust outlet of second gas-liquid separator
First gas-liquid separator.
The utility model has substantive distinguishing features and progress compared with the prior art, specifically, the utility model have with
Lower advantage：
1. by Trans-critical cycle CO2The cold-hot combined supply system of heat pump is effectively combined with spraying system, makes low-temperature receiver and heat source
It is fully utilized, and has recycled the utilization ratio for due to irreversible loss caused by expansion, substantially increasing the energy.
2. hot water temperature is layered, improves the profit of hot water by the way of multiple gas coolers in heating section
Use scope；Control aspect is heated, when some gas cooler is not required, is compensated, improved using cold supplement heat exchanger
The water outlet efficiency of hot water；Each gas cooler is corresponding with water tank respectively, can be with when a certain gas cooler is not required
The water yield of other gas coolers is improved by throttle valve；Each water tank is connected using series system head and the tail, when one of water
Box temperature degree can lean on higher level's water tank additional heat when reducing, and realize the circulation of hot water.
3. refrigerating section by injector and electric expansion valve, connects evaporator respectively, one can meet it is food refrigerated etc.
Low temperature cold source, another meets the high temperature low-temperature receiver such as air conditioner refrigerating, substantially increases the utilization rate of the energy.
4. two gas-liquid separators of refrigerating section are and CO2The gas-liquid separator of compression section is connected, and makes two gas-liquid separators
In unnecessary gas enter CO2Utilization is compressed again in compression section；Heating section is connected with refrigerating section by regenerator, in heating section system
CO after heat2CO after freezing in regenerator to refrigerating section2Heated, make full use of heat.
Brief description of the drawings
Fig. 1 is compression injection Trans-critical cycle CO in the utility model2Circulate the structure diagram of cold-hot combined supply system.
In figure：1. the first gas-liquid separator；2. Trans-critical cycle CO2Compressor；3. oil return separator；4. cold supplement is changed
Hot device；5. 6. injector of electric expansion valve；7. the second gas-liquid separator；8. the first evaporator；9. the 3rd gas-liquid separation
Device；10. the second evaporator；11. heat supplement heat exchanger；12. regenerator；13. first gas cooler；14. the second gas
Body cooler；15. third gas cooler；16. three-tank；17. the second water tank；18. the first water tank；19. water of intaking
Pump；20. the first triple valve；21. the second triple valve；22. the 6th triple valve；23. the 3rd triple valve；24. the 7th threeway
Valve；25. the 8th triple valve；26. the 4th triple valve；27. the 5th triple valve；28. the 4th throttle valve；29. first throttle
Valve；30. second throttle；31. the 3rd throttle valve；32. the 3rd throttle valve；33. the 3rd throttle valve；34. the 4th flow
Meter；35. first flowmeter；36. second flowmeter；37. the 3rd flowmeter.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
As shown in Figure 1, the present embodiment provides a kind of compression injection Trans-critical cycle CO2Cold-hot combined supply system is circulated, it includes CO2
Compression section, heating section and refrigerating section；
The CO2Compression section includes the first gas-liquid separator 1, Trans-critical cycle CO2Compressor 2 and oil return separator 3, described
The exhaust outlet of one gas-liquid separator 1 connects the Trans-critical cycle CO2The entrance of compressor 2, the Trans-critical cycle CO2The outlet of compressor 2
The entrance of the oil return separator 3 is connected, the oil export of the oil return separator 3 connects the Trans-critical cycle CO2Compressor 2 returns
Hydraulic fluid port；In the CO2In compression section, the first gas-liquid separator 1 is by CO2Gas-liquid separation, the gas input Trans-critical cycle CO2
Compressor 2, liquid are stayed in the first gas-liquid separator 1, prevent liquid from entering Trans-critical cycle CO2In compressor 2, liquid hammer is caused to show
As gas enters Trans-critical cycle CO2The supercriticality of high temperature and pressure, CO are compressed in compressor 22After compression, compressor oil is had
Overflow, for avoid compressor oil enter heating section influence heat exchange efficiency, into heating Duan Qianxu via the oil return separator 3 into
Row oil, the compressor oil of spilling is stored in the oil tank of oil return separator 3, as Trans-critical cycle CO2There are oil starvation feelings in compressor 2
During condition, oil return separator 3 can be Trans-critical cycle CO automatically2Compressor 2 carries out repairing.
The heating section includes cold supplement heat exchanger 4, first gas cooler 13, second gas cooler the 14, the 3rd
Gas cooler 15 and regenerator 12, first gas cooler 13 and second gas cooler 14 are connected by the second triple valve 21
Logical, second gas cooler 14 is connected with third gas cooler 15 by the 6th triple valve 22；The oil return separator 3 goes out
Mouth connects the entrance of the gas cooler 13 by the first triple valve 20 and the cold supplements the entrance of heat exchanger 4；It is described
The outlet of third gas cooler 15 and the outlet of cold supplement heat exchanger 4 connect the backheat by the 3rd triple valve 23
The gas access of device 12；Set on pipeline between cold supplement heat exchanger 4 and the regenerator 12 the 7th triple valve 24,
8th triple valve 25, the 7th triple valve 24 are connected with the 6th triple valve 22, and the 8th triple valve 25 is connected with the second triple valve 21.
In the heating section, CO2By the oil return separator 3, cold supplement heat exchanger 4, first gas cooler
13rd, second gas cooler 14, third gas cooler 15 are flowed into regenerator 12, and cooling water is via first gas cooler
13rd, second gas cooler 14, third gas cooler 15 realize heating, from third gas cooler 15 outflow wash one's face and rinse one's mouth etc. raw
Water is applied flexibly, flows out heating water from second gas cooler 14, drinking water is flowed out from first gas cooler 13, when not drinking
During water demand, controlled by the first triple valve 20, close the connection for flowing into first gas cooler 13, open the cold supplement
The pipeline connection of heat exchanger 4, the 8th triple valve 25 is connected with the second triple valve 21, makes CO2After heat exchanger 4 being supplemented by cold
Flow into second gas cooler 14, third gas cooler 15, when no heating water and drinking water needs, pass through control
First triple valve 20, the 8th triple valve 25 and the 7th triple valve 24 make CO2Not inflow gas cooler 13, gas cooler 14,
Heat exchanger 4 and third gas cooler 15 are supplemented directly through the cold；When there is no hot water demand, pass through control the one or three
Port valve 20, the 3rd triple valve 23, the 7th triple valve 24, the 8th triple valve 25 close CO2Inflow gas cooler 13, gas cooling
The pipeline of device 14, gas cooler 15, makes CO2Cold supplement heat exchanger 4 is flowed through to flow directly into regenerator 12.
The condensation-water drain of third gas cooler 15 is connected with the condensing water inlet of second gas cooler 14, the second gas
The condensation-water drain of body cooler 14 is connected with the condensing water inlet of first gas cooler 13；Third gas cooler 15 it is cold
The pipeline that condensate is exported between the condensing water inlet of second gas cooler 14 passes through first throttle valve 29, first flowmeter 35
Connect the first water tank 18；Between the condensation-water drain of second gas cooler 14 and the condensing water inlet of first gas cooler 13
Pipeline pass through second throttle 30, second flowmeter 36 connect the second water tank 17；The condensed water of first gas cooler 13 goes out
Mouth passes through the 3rd throttle valve 31, the 3rd flowmeter 37 connects three-tank 16；The condensing water inlet of third gas cooler 15 leads to
Cross the 4th throttle valve 28, the flow export of the 4th flowmeter connection water inlet water pump, the adjustment control water by each throttle valve to flow
Temperature.
The refrigerating section includes injector 6, the second gas-liquid separator 7, the 3rd gas-liquid separator 9, the first evaporator 8, the
Two evaporators 10, heat supplement heat exchanger 11；The gas vent of the regenerator 12 is respectively communicated with second gas-liquid separator 7
Entrance and the injector 6 main jet；The outlet of the regenerator 12 connects second gas by electric expansion valve 5
The entrance of liquid/gas separator 7；The pipeline of connection electric expansion valve 5 is mainly used for food refrigerated requirement of low temperature environment of Denging, connection injection
The pipeline of device 6 is mainly used for the high temperature refrigerating environment such as air-conditioning.
The liquid outlet of second gas-liquid separator 7 connects the entrance of first evaporator 8, first evaporator 8
Outlet connect the receiving chamber of the injector 6；The CO of first evaporator 8 outflow2Flow into the work of injector 6 and injector 6
The CO of nozzle outflow2Mixing is expanded, and the outlet of the injector 6 connects the entrance of the 3rd gas-liquid separator 9, described
The liquid outlet of 3rd gas-liquid separator 9 connects the entrance of second evaporator 10 by the 4th triple valve 26 and the heat is mended
The entrance of heat exchanger 11 is filled, the outlet of second evaporator 10 and the outlet of the heat supplement heat exchanger 11 pass through the five or three
Port valve 27 connects the liquid inlet of the regenerator 12, and the liquid outlet of the regenerator connects entering for the first gas-liquid separator 1
Mouthful；Make the CO after the outflow of injector 62Into after the 3rd gas-liquid separator 9, divided by the 4th triple valve 26 for two-way, all the way into
The 5th triple valve 27 is flowed into after entering the second evaporator 10 refrigeration, another way, which enters after heat supplement heat exchanger 11 freezes, to flow
Enter the 5th triple valve 27 with another way to converge, the CO after converging2After flowing into the heating of regenerator 12, into the first gas-liquid point
From being reused in device 1.
The exhaust outlet of 3rd gas-liquid separator 9 and the exhaust outlet of second gas-liquid separator 7 are and described first
Gas-liquid separator 1, allows the gas in the 3rd gas-liquid separator 9 and the second gas-liquid separator 7 to enter the first gas-liquid separator 1
In reuse.
In other embodiments, gas cooler connects the valve needed with the number and gas cooler of water tank with water tank
It can be arranged as required to.
Finally it should be noted that：Above example is only illustrating the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：It can still modify to specific embodiment of the present utility model or some technical characteristics are equally replaced
Change；Without departing from the spirit of technical solutions of the utility model, it should all cover in the claimed technical solution of the utility model
Among scope.
Claims (6)
- A kind of 1. compression injection Trans-critical cycle CO2Circulate cold-hot combined supply system, it is characterised in that：It includes CO2Compression section, heating section And refrigerating section；The CO2Compression section includes the first gas-liquid separator, Trans-critical cycle CO2Compressor and oil return separator, first gas-liquid point Exhaust outlet from device connects the Trans-critical cycle CO2The entrance of compressor, the Trans-critical cycle CO2The outlet connection of compressor is described to return The entrance of oil eliminator, the oil export of the oil return separator connect the Trans-critical cycle CO2The oil return opening of compressor；The heating section includes at least one gas cooler and regenerator, and each gas cooler head and the tail connect, described time The outlet of oil eliminator is connected with the entrance of gas cooler described in First, and the outlet of the gas cooler of end connects Lead to the gas access of the regenerator；The refrigerating section include injector, the second gas-liquid separator, the 3rd gas-liquid separator, the first evaporator, the second evaporator, Heat supplement heat exchanger；The gas vent of the regenerator is respectively communicated with the entrance of second gas-liquid separator and the injection The main jet of device, the gas vent of the regenerator connect the entrance of second gas-liquid separator by electric expansion valve； The liquid outlet of second gas-liquid separator connects the entrance of first evaporator, the outlet connection institute of first evaporator State the receiving chamber of injector；The outlet of the injector connects the entrance of the 3rd gas-liquid separator, the 3rd gas-liquid point Liquid outlet from device connects the entrance of second evaporator and the entrance of the heat supplement heat exchanger by the 4th triple valve, The outlet of second evaporator connects the regenerator with the outlet of the heat supplement heat exchanger by the 5th triple valve Liquid inlet, the liquid outlet of the regenerator connects the entrance of first gas-liquid separator.
- 2. compression injection Trans-critical cycle CO according to claim 12Circulate cold-hot combined supply system, it is characterised in that：The heating Section further includes cold supplement heat exchanger, and the gas cooler at least two, the outlet of the oil return separator passes through first Triple valve is connected with the entrance of the entrance of gas cooler described in First and cold supplement heat exchanger, each gas Cooler is connected by triple valve head and the tail, the outlet of the cold supplement heat exchanger and the outlet of the gas cooler of end By the gas access of the 3rd triple valve connection regenerator, each triple valve between each gas cooler is respectively communicated with Pipeline between the cold supplement heat exchanger and the regenerator.
- 3. compression injection Trans-critical cycle CO according to claim 22Circulate cold-hot combined supply system, it is characterised in that：It is two neighboring The condensed water entry and exit of the gas cooler are connected, the condensing water inlet and water inlet water of the gas cooler of end The flow export of pump is connected.
- 4. compression injection Trans-critical cycle CO according to claim 32Circulate cold-hot combined supply system, it is characterised in that：It is two neighboring Pipeline between the condensed water entry and exit of the gas cooler is communicated with a water tank, First institute by a throttle valve respectively The condensation-water drain for stating gas cooler connects a water tank by a throttle valve, is connected between each water tank by throttle valve.
- 5. the compression injection Trans-critical cycle CO according to claim 3 or 42Circulate cold-hot combined supply system, it is characterised in that：End The gas cooler condensing water inlet by the 4th throttle valve with it is described water inlet water pump flow export be connected.
- 6. compression injection Trans-critical cycle CO according to claim 52Circulate cold-hot combined supply system, it is characterised in that：Described 3rd The exhaust outlet of gas-liquid separator connects first gas-liquid separator with the exhaust outlet of second gas-liquid separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721333638.2U CN207317306U (en) | 2017-10-17 | 2017-10-17 | Compression injection transcritical CO_2 circulates cold-hot combined supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721333638.2U CN207317306U (en) | 2017-10-17 | 2017-10-17 | Compression injection transcritical CO_2 circulates cold-hot combined supply system |
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| CN207317306U true CN207317306U (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721333638.2U Active CN207317306U (en) | 2017-10-17 | 2017-10-17 | Compression injection transcritical CO_2 circulates cold-hot combined supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642916A (en) * | 2017-10-17 | 2018-01-30 | 郑州大学 | Compression injection Trans-critical cycle CO2Circulate cold-hot combined supply system |
| CN110966783A (en) * | 2019-12-23 | 2020-04-07 | 江苏苏净集团有限公司 | Two-stage throttling multi-temperature carbon dioxide heat pump unit |
-
2017
- 2017-10-17 CN CN201721333638.2U patent/CN207317306U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642916A (en) * | 2017-10-17 | 2018-01-30 | 郑州大学 | Compression injection Trans-critical cycle CO2Circulate cold-hot combined supply system |
| CN110966783A (en) * | 2019-12-23 | 2020-04-07 | 江苏苏净集团有限公司 | Two-stage throttling multi-temperature carbon dioxide heat pump unit |
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