CN102252385A - Dual-circuit air-conditioning system - Google Patents
Dual-circuit air-conditioning system Download PDFInfo
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- CN102252385A CN102252385A CN2011101240687A CN201110124068A CN102252385A CN 102252385 A CN102252385 A CN 102252385A CN 2011101240687 A CN2011101240687 A CN 2011101240687A CN 201110124068 A CN201110124068 A CN 201110124068A CN 102252385 A CN102252385 A CN 102252385A
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- heat exchanger
- valve
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- indoor
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 22
- 238000005057 refrigeration Methods 0.000 claims abstract description 31
- 239000003507 refrigerant Substances 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 230000006835 compression Effects 0.000 claims abstract description 27
- 238000007906 compression Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims description 49
- 238000002955 isolation Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 14
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 238000007710 freezing Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000004146 energy storage Methods 0.000 abstract 1
- 239000002918 waste heat Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 6
- 238000003860 storage Methods 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a dual-circuit air-conditioning system which comprises a compression refrigeration circuit and a heat exchange circuit. The compression refrigeration circuit and the heat exchange circuit share an outdoor heat exchanger, an outdoor fan, an indoor heat exchanger and an indoor fan; both the outdoor heat exchanger and the indoor heat exchanger exchange heat through three fluids and respectively comprise a refrigerant pipeline, a water or anti-freezing solution pipeline and a fin; the compression refrigeration circuit is a closed loop which consists of a compressor, the refrigerant pipeline of the indoor heat exchanger, an expansion device and the refrigerant pipeline of the outdoor heat exchanger; and the heat exchange circuit is the closed loop which consists of a pump, the water or anti-freezing solution pipeline of the outdoor heat exchanger and the water or anti-freezing solution pipeline of the indoor heat exchanger. The dual-circuit air-conditioning system disclosed by the invention has high energy efficiency ratio and an energy storage function, can realize free cooling, can utilize energies at two sides of a hot pump system simultaneously, can give consideration to various cold and heat resources and can perform effective coupling with solar energy, waste heat and the like, and has the advantages of good heating effect, energy conservation, high efficiency, flexibility, convenience, low cost and good economical efficiency.
Description
Technical field
The present invention relates to technical field of heat exchange, relate in particular to a kind of double loop air-conditioning system.
Background technology
Conventional air-conditioning system be a Cooling and Heat Source with air or liquid (water or freezing liquid), and water or freezing liquid be generally from cooling tower, or by cooling such as seawater/river or source, ground or heat.But generally can not take into account air simultaneously or liquid is Cooling and Heat Source, promptly only use a kind of Cooling and Heat Source, perhaps air, perhaps liquid.
Conventional air-conditioning system heats room air with water or cold-producing medium, but generally only uses a kind of refrigerant, and promptly water or cold-producing medium are handled room air, and can not take into account dual mode simultaneously.
Conventional generally can not utilize the energy of compression refrigeration circulation both sides simultaneously, promptly utilize its heat and cold simultaneously based on the compression-type refrigeration air-conditioning system.
The conventional air-conditioning system based on compression-type refrigeration, especially air origin system, generally can not with other Cooling and Heat Source, carry out good lotus root as solar energy etc. and close.
The conventional air-conditioning system based on compression-type refrigeration generally can not effectively realize free cold supply, as directly utilizing outdoor cold air, realizes indoor cooling and need not compressor start.
The conventional air-conditioning system based on compression-type refrigeration generally can not realize accumulation of energy by efficiently, simply storing of cold and heat.
Conventional air source heat pump system, when outdoor temperature was low, because the problem of frosting, the process that heats usually was interrupted by defrost process, and causes heating effect relatively poor.
Conventional air source refrigeration system is a low-temperature receiver with the air, its condensation temperature height, energy consumption is big, and evaporation refrigeration type condenser since can not with existing air source condenser compatibility, use inconvenient.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of double loop air-conditioning system is provided.
The objective of the invention is to be achieved through the following technical solutions: a kind of double loop air-conditioning system, it contains compression refrigeration circuits and two loops of heat exchange loop, the shared outdoor heat exchanger of compression refrigeration circuits and heat exchange loop, outdoor fan, indoor heat exchanger and indoor fan; Outdoor heat exchanger and indoor heat exchanger are the heat exchanger of three fluid heat exchange, comprise refrigerant line, water or anti-icing fluid pipeline and fin; The closed circuit that compression refrigeration circuits is made up of the refrigerant line of refrigerant line, expansion gear and the outdoor heat exchanger of compressor, indoor heat exchanger; Heat exchange loop is by water or anti-icing fluid pipeline, the water of indoor heat exchanger or the closed circuit that the anti-icing fluid pipeline is formed of pump, outdoor heat exchanger; Outdoor heat exchanger and indoor heat exchanger are fixed with outdoor fan and indoor fan outward respectively.
Further, increase device for storing liquid, first valve and second valve between the outdoor heat exchanger of heat exchange loop and indoor heat exchanger, device for storing liquid forms pipeline structure in parallel with after second valve links to each other with first valve.
Further, also comprise an extraneous thermal source or a low-temperature receiver that links to each other with device for storing liquid.
Further, described device for storing liquid links to each other with pump by pipeline, on the pipeline between device for storing liquid and the pump, be provided with the 4th valve, on the pipeline between pump and the indoor heat exchanger, be provided with the 3rd valve, on the pipeline between outdoor heat exchanger and the indoor heat exchanger, be provided with the 5th valve.
Further, has first heat exchanger in the described device for storing liquid, first heat exchanger and outdoor heat exchanger are in parallel or connect, and are provided with the 7th valve on the pipeline between first heat exchanger and the expansion gear, are provided with the 6th valve on the pipeline between outdoor heat exchanger and the expansion gear; The isolation of selecting to realize first heat exchanger and refrigerant compression loop by the switch of the 6th valve and the 7th valve be connected, carry out flow distribution of refrigerant by the aperture of selecting the 6th valve and the 7th valve.
Further, have second heat exchanger in the described device for storing liquid, second heat exchanger and indoor heat exchanger are in parallel or connect; On the pipeline between second heat exchanger and the expansion gear, be provided with the 9th valve, on the pipeline between indoor heat exchanger and the expansion gear, be provided with the 8th valve; The isolation that realizes second heat exchanger and refrigerant compression loop by the 8th valve, the 9th valve be connected, carry out the assignment of traffic of cold-producing medium by the aperture of selecting the 8th valve, the 9th valve.
Further, first heat exchanger and second heat exchanger are set simultaneously in device for storing liquid.
Further, have first heat exchanger in the described device for storing liquid, first heat exchanger carries out parallel connection with outdoor heat exchanger and indoor heat exchanger simultaneously or connects.
The invention has the beneficial effects as follows, Energy Efficiency Ratio height of the present invention, has the accumulation of energy function, can realize free cooling, can utilize the energy of heat pump both sides simultaneously, can take into account multiple Cooling and Heat Source, can carry out effective lotus root with solar energy, used heat etc. and close, heating effect is good, and is energy-conservation, efficient, system is flexible, cost is low, good economy performance.
Description of drawings
Fig. 1 is a basic principle schematic of the present invention;
Fig. 2 is the heat exchanger schematic diagram of three kinds of fluid heat exchange;
Fig. 3 is the outdoor system principle schematic diagram that has evaporation-cooled device;
Fig. 4 is the system principle schematic diagram () that has device for storing liquid;
Fig. 5 is the system principle schematic diagram (two) that has device for storing liquid;
Fig. 6 is for having the system principle schematic diagram () of refrigerant/water (anti-icing fluid) heat exchanger;
Fig. 7 is for having the system principle schematic diagram (two) of refrigerant/water (anti-icing fluid) heat exchanger;
Fig. 8 is for having the system principle schematic diagram (three) of refrigerant/water (anti-icing fluid) heat exchanger;
Fig. 9 is for having the system principle schematic diagram (four) of refrigerant/water (anti-icing fluid) heat exchanger; Among the figure, outdoor heat exchanger 31, outdoor fan 33, indoor heat exchanger 32, indoor fan 34, compressor 11, expansion gear 12, refrigerant line 13, pump 21, water or anti-icing fluid pipeline 22, fin 35, evaporative type cooler 36, device for storing liquid 23, extraneous thermal source or low-temperature receiver 24, first valve 25, second valve 26, the 3rd valve 27, the 4th valve 28, the 5th valve 29, the 6th valve 14, the 7th valve 15, first heat exchanger 16, second heat exchanger 19, the 8th valve 17, the 9th valve 18.
The specific embodiment
Describe the present invention in detail with embodiment with reference to the accompanying drawings below, it is more obvious that purpose of the present invention and effect will become.
As shown in Figure 1, double loop of the present invention air-conditioning system contains compression refrigeration circuits 1 and 2 two loops of heat exchange loop, compression refrigeration circuits 1 and heat exchange loop 2 shared outdoor heat exchangers 31, outdoor fan 33, indoor heat exchanger 32 and indoor fan 34, compression refrigeration circuits 1 also contains compressor 11, expansion gear 12, annexes such as refrigerant line 13 and valve, heat exchange loop 2 also contain pump 21, water or anti-icing fluid pipeline 22 and pipeline fittings etc.
During refrigeration, outdoor air 4 flows through outdoor heat exchanger 31 and is heated, room air 5 flows through indoor heat exchanger 32 and is cooled, when outside air temperature is lower than indoor design temperature, can start pump 21 utilizes heat exchange loop 2 to realize cooling, when outside air temperature is higher than indoor design temperature, can stop pump 2, start compressor 11 and utilize compression refrigeration circuits 1 to realize cooling.
Compression refrigeration circuits can be single refrigeration, or singly heats, or heat pump, promptly freezes not only but also heat.
When compression refrigeration circuits 1 heats, when preventing frosting, can select loop 1 to be interrupted or operation defrosting continuously.
The refrigeration of compression refrigeration circuits 1, the conversion of heat-production functions can realize by the conversion of cold-producing medium cross valve (not marking among the figure).
Fig. 2 shows the principle of indoor heat exchanger 31 and indoor heat exchanger 32, be a kind of heat exchanger of three fluid heat exchange, promptly refrigerant line 13, water or anti-icing fluid pipeline 22, fin 35, air carries out heat exchange or carries out heat exchange with both simultaneously by fin 35 and cold-producing medium water (or anti-icing fluid).
Fig. 3 compared to Figure 1, difference is that the air inlet side at outdoor heat exchanger 31 is provided with evaporative type cooler 36, the outdoor air 4 back inlet chamber external heat exchanger 31 that is cooled behind evaporative type cooler 36.Outdoor devaporizer is indirect evaporation cooler or direct evaporative cooler.
Fig. 4 has increased device for storing liquid 23, first valve 25 and second valve 26 in heat exchange loop 2 on the basis of Fig. 1, device for storing liquid 23 forms pipeline structure in parallel with after second valve 26 links to each other with first valve 25.Device for storing liquid 23 and extraneous thermal source or low-temperature receiver 24(such as solar water heater etc.) link, also be provided with first valve 25 and second valve 26 in the heat exchange loop 2, make the device for storing liquid 24 and the other parts of heat exchange loop 2 to isolate, also can communicate.Device for storing liquid 24 can be used for accumulation of energy, comprises accumulation of heat or cold-storage.
As shown in Figure 5, on the basis of Fig. 4, device for storing liquid 23 links to each other with pump 21 by pipeline, on the pipeline between device for storing liquid 23 and the pump 21, be provided with the 4th valve 28, on the pipeline between pump 21 and the indoor heat exchanger 32, be provided with the 3rd valve 27, on the pipeline between outdoor heat exchanger 31 and the indoor heat exchanger 32, be provided with the 5th valve 29.
Fig. 6 has increased by first heat exchanger 16 and has placed device for storing liquid 23 on the basis of Fig. 4, when extraneous thermal source or low-temperature receiver do not have, also the device among Fig. 6 24 can be removed certainly.Heat exchanger 16 is arranged in parallel with outdoor heat exchanger 31, but the setting (not shown this situation among Fig. 6) of also can selecting to connect with heat exchanger 31, the isolation that can select realization first heat exchanger 16 and refrigerant compression loop 2 by the switch of the 6th valve 14 and the 7th valve 15 be connected, also can carry out flow distribution of refrigerant, thereby realize different mode operations by the aperture of selecting the 6th valve 14 and the 7th valve 15.First heat exchanger is a cold-producing medium in 16 1 fluid passages, is water or anti-icing fluid in another fluid passage.
For instance, when compression refrigeration circuits is made refrigerating operaton, can select the 6th valve 14 to close, outdoor fan 33 stops, and the 7th valve 15 is opened, 1 operation of refrigerant compression loop, liquid in the heat exchanger 16 heating device for storing liquid, the liquid of heat-storing device 23 can be used for heating health hot water etc.
Fig. 7 has increased by second heat exchanger 19 and has placed device for storing liquid 23, the second heat exchangers 19 in parallel with indoor heat exchanger 32 on the basis of Fig. 4, certain second heat exchanger 19 also can be connect with indoor heat exchanger 32 (a not shown this situation).The isolation that can realize second heat exchanger 19 and refrigerant compression loop 1 by the 8th valve 17, the 9th valve 18 be connected, also can carry out the assignment of traffic of cold-producing medium by the aperture of selecting the 8th valve 17, the 9th valve 18.Second heat exchanger is a cold-producing medium in 19 1 fluid passages, is water or anti-icing fluid in another fluid passage.
Fig. 7 can realize the various modes operation, as close the 8th valve 17, open the 9th valve 18, indoor fan 34 stops, compression refrigeration circuits 1 operation, liquid in heating of second heat exchanger 19 or the refrigeration device for storing liquid is realized accumulation of heat or cold-storage, also can and open the 9th valve 18 and all open the 8th valve 17, realizes cold-storage and accumulation of heat to space air 5 refrigeration or when heating.
As shown in Figure 8, first heat exchanger 16 and second heat exchanger 17 are set simultaneously in device for storing liquid 23.Fig. 8 is the combination of Fig. 6 and Fig. 7, but removes extraneous thermal source or low-temperature receiver 24, and system has greater functionality shown in Fig. 8, promptly than Fig. 6 and Fig. 7 more operational mode can be arranged.
As shown in Figure 9, first heat exchanger 16 carries out parallel connection with outdoor heat exchanger 31 and indoor heat exchanger 32 simultaneously or connects, and shown in the figure is situation in parallel.On the basis of Fig. 6, Fig. 7, increased simultaneously valve 20,40.To realize the type of flow of different cold-producing mediums.
Claims (8)
1. double loop air-conditioning system, it is characterized in that, it contains compression refrigeration circuits (1) and (2) two loops of heat exchange loop, compression refrigeration circuits (1) and the shared outdoor heat exchanger of heat exchange loop (2) (31), outdoor fan (33), indoor heat exchanger (32) and indoor fan (34) etc.; Outdoor heat exchanger (31) and indoor heat exchanger (32) are the heat exchanger of three fluid heat exchange, comprise refrigerant line (13), water or anti-icing fluid pipeline (22) and fin (35); The closed circuit that compression refrigeration circuits (1) is made up of the refrigerant line (13) of refrigerant line (13), expansion gear (12) and the outdoor heat exchanger (31) of compressor (11), indoor heat exchanger (32); Heat exchange loop (2) is by water or anti-icing fluid pipeline (22), the water of indoor heat exchanger (32) or the closed circuit that anti-icing fluid pipeline (22) is formed of pump (21), outdoor heat exchanger (31); Outer outdoor fan (33) and the indoor fan (34) of being fixed with respectively of outdoor heat exchanger (31) and indoor heat exchanger (32).
2. according to the described double loop of claim 1 air-conditioning system, it is characterized in that, between the outdoor heat exchanger (31) of heat exchange loop (2) and indoor heat exchanger (32), increase device for storing liquid (23), first valve (25) and second valve (26), device for storing liquid (23) forms pipeline structure in parallel with after second valve (26) links to each other with first valve (25).
3. according to the described double loop of claim 2 air-conditioning system, it is characterized in that, also comprise an extraneous thermal source that links to each other with device for storing liquid (23) or a low-temperature receiver (24).
4. according to the described double loop of claim 2 air-conditioning system, it is characterized in that, described device for storing liquid (23) links to each other with pump (21) by pipeline, on the pipeline between device for storing liquid (23) and the pump (21), be provided with the 4th valve (28), on the pipeline between pump (21) and the indoor heat exchanger (32), be provided with the 3rd valve (27), on the pipeline between outdoor heat exchanger (31) and the indoor heat exchanger (32), be provided with the 5th valve (29).
5. according to the described double loop of claim 2 air-conditioning system, it is characterized in that, has first heat exchanger (16) in the described device for storing liquid (23), first heat exchanger (16) and outdoor heat exchanger (31) are in parallel or connect, on the pipeline between first heat exchanger (16) and the expansion gear (12), be provided with the 7th valve (15), on the pipeline between outdoor heat exchanger (31) and the expansion gear (12), be provided with the 6th valve (14); The isolation of selecting to realize first heat exchanger (16) and refrigerant compression loop (2) by the switch of the 6th valve (14) and the 7th valve (15) be connected, carry out flow distribution of refrigerant by the aperture of selecting the 6th valve (14) and the 7th valve (15).
6. according to the described double loop of claim 2 air-conditioning system, it is characterized in that having second heat exchanger (19) in the described device for storing liquid (23), second heat exchanger (19) and indoor heat exchanger (32) are in parallel or connect; On the pipeline between second heat exchanger (19) and the expansion gear (12), be provided with the 9th valve (18), on the pipeline between indoor heat exchanger (32) and the expansion gear (12), be provided with the 8th valve (17); The isolation that realizes second heat exchanger (19) and refrigerant compression loop (1) by the 8th valve (17), the 9th valve (18) be connected, carry out the assignment of traffic of cold-producing medium by the aperture of selecting the 8th valve (17), the 9th valve (18).
7. according to the described double loop of claim 2 air-conditioning system, it is characterized in that, first heat exchanger (16) and second heat exchanger (19) are set in device for storing liquid (23) simultaneously.
8. according to the described double loop of claim 2 air-conditioning system, it is characterized in that having first heat exchanger (16) in the described device for storing liquid (23), first heat exchanger (16) carries out parallel connection with outdoor heat exchanger (31) and indoor heat exchanger (32) simultaneously or connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101240687A CN102252385A (en) | 2011-05-15 | 2011-05-15 | Dual-circuit air-conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101240687A CN102252385A (en) | 2011-05-15 | 2011-05-15 | Dual-circuit air-conditioning system |
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| CN102252385A true CN102252385A (en) | 2011-11-23 |
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| CN2011101240687A Pending CN102252385A (en) | 2011-05-15 | 2011-05-15 | Dual-circuit air-conditioning system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620489A (en) * | 2012-04-06 | 2012-08-01 | 广州市华德工业有限公司 | Air conditioner heat pump unit with antifreeze solution regenerated heat recovery device |
| DE102016115175A1 (en) * | 2016-08-16 | 2018-02-22 | Rittal Gmbh & Co. Kg | Cooling arrangement for the air conditioning of an IT environment and in particular for the data center air conditioning |
| CN111238160A (en) * | 2020-03-06 | 2020-06-05 | 辽宁凌烨冷热技术创新有限公司 | Cold-storage heat-storage cold-heat combined fresh box lunch distribution self-lifting cabinet and control method |
| CN113237145A (en) * | 2021-05-27 | 2021-08-10 | 深圳昂湃技术有限公司 | Heat pump air conditioning device and implementation method thereof |
| CN113483412A (en) * | 2021-06-21 | 2021-10-08 | 清华大学 | Multi-mode water-fluorine multi-split air conditioner system |
| CN114484750A (en) * | 2022-01-28 | 2022-05-13 | 青岛海尔空调电子有限公司 | Control method and device for air conditioning system, air conditioning system and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111238160A (en) * | 2020-03-06 | 2020-06-05 | 辽宁凌烨冷热技术创新有限公司 | Cold-storage heat-storage cold-heat combined fresh box lunch distribution self-lifting cabinet and control method |
| CN113237145A (en) * | 2021-05-27 | 2021-08-10 | 深圳昂湃技术有限公司 | Heat pump air conditioning device and implementation method thereof |
| CN113483412A (en) * | 2021-06-21 | 2021-10-08 | 清华大学 | Multi-mode water-fluorine multi-split air conditioner system |
| CN113483412B (en) * | 2021-06-21 | 2022-04-15 | 清华大学 | Multi-mode water-fluorine multi-split air conditioner system |
| CN114484750A (en) * | 2022-01-28 | 2022-05-13 | 青岛海尔空调电子有限公司 | Control method and device for air conditioning system, air conditioning system and storage medium |
| CN114484750B (en) * | 2022-01-28 | 2024-05-14 | 青岛海尔空调电子有限公司 | Control method and device for air conditioning system, air conditioning system and storage medium |
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Application publication date: 20111123 |