CN205747571U - A kind of straight swollen air-conditioning device of carbon dioxide - Google Patents

A kind of straight swollen air-conditioning device of carbon dioxide Download PDF

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Publication number
CN205747571U
CN205747571U CN201620064524.1U CN201620064524U CN205747571U CN 205747571 U CN205747571 U CN 205747571U CN 201620064524 U CN201620064524 U CN 201620064524U CN 205747571 U CN205747571 U CN 205747571U
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China
Prior art keywords
heat
air
conditioning
exchanger rig
carbon
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Application number
CN201620064524.1U
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Chinese (zh)
Inventor
黄保民
朱建章
邹志胜
孙兆军
陈后军
孔华彪
郭海超
邵华
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China Railway Design Corp
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Third Railway Survey and Design Institute Group Corp
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Priority to CN201620064524.1U priority Critical patent/CN205747571U/en
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Abstract

The utility model discloses a kind of straight swollen air-conditioning device of carbon dioxide, including compressor, the first heat-exchanger rig, the second heat-exchanger rig, throttling arrangement and refrigerant tubing;This air-conditioning device also includes switching valve;Compressor, switching valve, the first heat-exchanger rig, throttling arrangement and the second heat-exchanger rig are connected into closed cycle loop by refrigerant tubing;Carbon dioxide coolant is filled in refrigerant tubing.Second heat-exchanger rig includes air inlet, the second finned heat exchanger, the second blower fan and the air outlet connected the most in groups.The straight swollen air-conditioning device of carbon dioxide of the present utility model, during Winter heat supply, second finned heat exchanger and room air or outdoor air directly carry out heat exchange, need not first make hot water, then by hot water and air heat-exchange, thus decrease heat exchange link, simplify heating system, and wind pushing temperature is relatively low, such that it is able to the heating efficiency of carbon dioxide air-conditioning device is greatly improved, it is very suitable for large space heating.

Description

A kind of straight swollen air-conditioning device of carbon dioxide
Technical field
This utility model relates to a kind of straight swollen air-conditioning device, particularly relates to a kind of straight swollen air-conditioning device of carbon dioxide.
Background technology
Critical parameters (the critical temperature t of carbon dioxidec=31.06 DEG C, pc=7377.65kPa) determine mode and basic feature that carbon dioxide heat-pump circulation should use.Due to the critical temperature that it is relatively low, restricted by ambient temperature during cooling in summer and the needing of hot water temperature during Winter heat supply, determine Carbon Dioxide Application when art of heat pumps, the mode of trans critical cycle should be used.Due to the characteristic of its trans critical cycle, have in terms of providing domestic hot-water for warming up and surmount the conventional hot pump performance of freon.Carbon dioxide is natural refrigerant simultaneously, destruction and the accumulation effect of greenhouse effect to ozone layer, is almost negligible.
At present, carbon dioxide air source heat pump also begins to for heating, but hot water is first made all through source pump, then hot water is passed through radiator again, in fan coil or the end equipment such as air conditioning unit, heated by the heat exchange of wind with water, and the minimum return water temperature of all hot water heating modes is all more than 35 DEG C, exceed the critical temperature of carbon dioxide working medium, if heating backwater is passed directly in two sample carbon source pump, its heating efficiency can be the lowest, even run difficulty, at present, have tried to use following several ways to solve problem above, a kind of mode is by installing a set of water-loop heat pump additional at hot water side, source pump is entered back into after end return water temperature is down to meet the inflow temperature of source pump.Another mode is to change water-loop heat pump into heat exchanger, and by return pipe and refrigerant pipe heat exchange, both the above mode is very limited to the lifting effect of carbon dioxide heat-pump unit heating efficiency.
Utility model content
This utility model is for above-mentioned problems of the prior art, it is provided that a kind of straight swollen air-conditioning device of carbon dioxide.
This utility model is adopted the technical scheme that by this problem of solution:
A kind of straight swollen air-conditioning device of carbon dioxide, including compressor, the first heat-exchanger rig, the second heat-exchanger rig, throttling arrangement and the refrigerant tubing discharged after being compressed by carbon dioxide coolant;This air-conditioning device also includes switching valve;Compressor, switching valve, the first heat-exchanger rig, throttling arrangement and the second heat-exchanger rig are connected into closed cycle loop by refrigerant tubing;Carbon dioxide coolant is filled in refrigerant tubing.
The first described heat-exchanger rig includes the first finned heat exchanger and the first blower fan connected in groups.
The second described heat-exchanger rig includes air inlet, the second finned heat exchanger, the second blower fan and the air outlet connected the most in groups.
This utility model has the advantage that with good effect:
The straight swollen air-conditioning device of carbon dioxide of the present utility model, during Winter heat supply, second finned heat exchanger and room air or outdoor air directly carry out heat exchange, need not first make hot water, again by hot water and air heat-exchange, thus decrease heat exchange link, simplify heating system, simultaneously, owing to indoor air temperature or outside air temperature in winter are below less than 20 DEG C, less than carbon dioxide critical temperature 31.06 DEG C, and wind pushing temperature is relatively low, such that it is able to the heating efficiency of carbon dioxide air-conditioning device is greatly improved, it is very suitable for large space heating.
Accompanying drawing explanation
Fig. 1 is the structural representation of the straight swollen air-conditioning device of carbon dioxide of the present utility model.
Critical piece symbol description in accompanying drawing:
1: the first finned heat exchanger 2: the first blower fans
3: throttling arrangement 4: switching valve
5: compressor 6: refrigerant tubing
7: the second blower fans 8: the second finned heat exchangers
9: air inlet 10: air outlet.
Detailed description of the invention
Referring to the drawings and specific embodiment swollen air-conditioning device straight to carbon dioxide of the present utility model is described further.Following each embodiment is merely to illustrate this utility model and is not limitation of the utility model.
Fig. 1 is the structural representation of the straight swollen air-conditioning device of carbon dioxide of the present utility model.As it is shown in figure 1, the straight swollen air-conditioning device of carbon dioxide of the present utility model, including compressor the 5, first heat-exchanger rig, the second heat-exchanger rig, throttling arrangement 3 and the refrigerant tubing 6 discharged after carbon dioxide coolant is compressed.This air-conditioning device also includes switching valve 4;Compressor 5, switching valve the 4, first heat-exchanger rig, throttling arrangement 3 and the second heat-exchanger rig are connected into closed cycle loop by refrigerant tubing 6.Carbon dioxide coolant is filled in refrigerant tubing 6.
First heat-exchanger rig includes the first finned heat exchanger 1 and the first blower fan 2 connected in groups.Second heat-exchanger rig includes air inlet the 9, second finned heat exchanger the 8, second blower fan 7 and the air outlet 10 connected the most in groups.Air inlet the 9, second finned heat exchanger the 8, second blower fan 7 and air outlet 10 connect the most in groups, form air circulation duct.
The operation principle of the straight swollen air-conditioning device of carbon dioxide of the present utility model is as follows:
Compressor, switching valve, the first finned heat exchanger, the second finned heat exchanger, throttling arrangement, refrigerant tubing are arranged in series, by the switching valve on refrigerant tubing, it is achieved different operational modes:
When winter needs heat supply, by changing the direction of switching valve, make the carbon dioxide coolant of High Temperature High Pressure from compressor out after, first flow through the second finned heat exchanger, and by opening the second blower fan, make Cryogenic air enter from air inlet, flow through the second finned heat exchanger and become high temperature air after the carbon dioxide coolant heat exchange of High Temperature High Pressure, discharge from air outlet, send into and need the room of heating to heat;And carbon dioxide coolant enters in throttling arrangement after becoming cryogenic high pressure, the first finned heat exchanger is entered back into after becoming low-temp low-pressure, and by opening the first blower fan, outdoor air is made to flow through the first finned heat exchanger and become Cryogenic air and enter outdoor again after the carbon dioxide coolant heat exchange of low-temp low-pressure, and after the heat of carbon dioxide coolant absorption chamber outer air, flow back to again in compressor, form a heating circulation.
When needing refrigeration summer, by changing the direction of switching valve, make the carbon dioxide coolant of High Temperature High Pressure from compressor out after, first flow through the first finned heat exchanger, and by opening the first blower fan, outdoor air is made to flow through the first finned heat exchanger and become high temperature air and enter outdoor again after the carbon dioxide coolant heat exchange of High Temperature High Pressure, and carbon dioxide coolant enters in throttling arrangement after becoming cryogenic high pressure after outdoor air release heat, become low-temp low-pressure and enter back into the second finned heat exchanger, and by opening the second blower fan, high temperature air is made to enter from air inlet, flow through the second finned heat exchanger and become Cryogenic air after the carbon dioxide coolant heat exchange of low-temp low-pressure, discharge from air outlet, send into and need the room of refrigeration to carry out cooling, carbon dioxide coolant flows back in compressor again, form one for SAPMAC method.
Existing carbon dioxide air source heat pump first makes hot water owing to using, and is passed through in radiator, fan coil or the end equipment such as air conditioning unit the most again, is heated by the heat exchange of wind with water, and its heating efficiency is relatively low, also cannot popularization and application.And this device eliminates the hot water link of centre, by wind and finned heat exchanger direct heat transfer, both reduced the condensation temperature of air-conditioning device, and made again the temperature of condenser inlet less than critical temperature.The straight swollen air-conditioning device of carbon dioxide of the present utility model, solve current carbon dioxide air source heat pump when heating, due to the return water temperature problem that the heating efficiency that causes is too low higher than carbon dioxide critical temperature, especially for large space heating house, north cold area or use the building of all-air air conditioning system to provide a kind of practical energy saving and environment friendly heating plant.

Claims (1)

1. the straight swollen air-conditioning device of carbon dioxide, including compressor (5), the first heat-exchanger rig, the second heat-exchanger rig, throttling arrangement (3) and refrigerant tubing (6);It is characterized in that: this air-conditioning device also includes switching valve (4);Compressor (5), switching valve (4), the first heat-exchanger rig, throttling arrangement (3) and the second heat-exchanger rig are connected into closed cycle loop by refrigerant tubing (6);Refrigerant tubing fills carbon dioxide coolant in (6);First heat-exchanger rig includes the first finned heat exchanger (1) and the first blower fan (2) connected in groups;Second heat-exchanger rig includes air inlet (9), the second finned heat exchanger (8), the second blower fan (2) and the air outlet (10) connected the most in groups.
CN201620064524.1U 2016-01-25 2016-01-25 A kind of straight swollen air-conditioning device of carbon dioxide Active CN205747571U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620064524.1U CN205747571U (en) 2016-01-25 2016-01-25 A kind of straight swollen air-conditioning device of carbon dioxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620064524.1U CN205747571U (en) 2016-01-25 2016-01-25 A kind of straight swollen air-conditioning device of carbon dioxide

Publications (1)

Publication Number Publication Date
CN205747571U true CN205747571U (en) 2016-11-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105605821A (en) * 2016-01-25 2016-05-25 铁道第三勘察设计院集团有限公司 Carbon dioxide direct extension air conditioning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105605821A (en) * 2016-01-25 2016-05-25 铁道第三勘察设计院集团有限公司 Carbon dioxide direct extension air conditioning device

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GR01 Patent grant
C14 Grant of patent or utility model
CP01 Change in the name or title of a patent holder

Address after: 300142 Hebei District, Zhongshan Road, No. 10,

Patentee after: China Railway Design Group Limited

Address before: 300142 Hebei District, Zhongshan Road, No. 10,

Patentee before: China Railway Third Survey and Design Institute Group Ltd.

CP01 Change in the name or title of a patent holder