CN101140122B - Heat pump machine group of combined throttling set - Google Patents

Heat pump machine group of combined throttling set Download PDF

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Publication number
CN101140122B
CN101140122B CN2007101331459A CN200710133145A CN101140122B CN 101140122 B CN101140122 B CN 101140122B CN 2007101331459 A CN2007101331459 A CN 2007101331459A CN 200710133145 A CN200710133145 A CN 200710133145A CN 101140122 B CN101140122 B CN 101140122B
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China
Prior art keywords
throttling arrangement
pipeline
throttling
refrigeration
check valve
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CN2007101331459A
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CN101140122A (en
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顾卫平
白俊文
王洋
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Wuxi Tongfang Artificial Environment Co Ltd
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Wuxi Tongfang Artificial Environment Co Ltd
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Abstract

This invention relates to a throttle device being able to stably and efficiently run when a heat pump air conditioning unit implements heating and refrigeration in the cold area, which is formed by a compressor, a reversing valve, a gas-liquid separator, an indoor heat exchanger, a liquid storage device, a flash evaporator and an outdoor heat exchanger through pipeline connections; through the optimal combination of the three throttle device components, the invention increases the running stability and use range of a heat pump system, improves the heating capacity of an air source heat pump under the low temperature environment, reduces the attenuation of heating capacity with the reduction of environmental temperature, and simplifies the structure and lowers the cost.

Description

Use the source pump of combination throttling arrangement
Technical field
The present invention relates to the air conditioner energy saving technical field, particularly the throttling arrangement that cold district heat pump air conditioner unit can stable and high effective operation when heating and freeze.
Background technology
Under low temperature environment, there is multiple factor to cause air source heat pump heating capacity deficiency, the heating capacity decay.Its reason can reduce that refrigerant flow minimizing, excessive discharge temperature, compression ratio increase, frosting problem, compression power consumption reduce, the design of the static state of system causes that restricting element does not seriously match or the like under the worst cold case.In the existing heat pump, at heating condition and the shared throttling arrangement of cooling condition, the heating performance coefficient index (COP) that has satisfied the air source heat pump handpiece Water Chilling Units afterwards, can not guarantee that this source pump is energy-conservation, promptly can not guarantee to satisfy the requirement of coefficient of performance of refrigerating (COP) under cooling condition.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of and improve the heating capacity of air source heat pump under low temperature environment, reduce the source pump of the use combination throttling arrangement of the attenuation that heating capacity reduces with environment temperature.
According to technical scheme provided by the invention, use the source pump of combination throttling arrangement to comprise compressor, reversal valve, indoor heat exchanger, flash vessel, outdoor heat exchanger, described parts connect by pipeline, it is characterized in that, the source pump of described use combination throttling arrangement comprises a throttling arrangement, described throttling arrangement comprises and heats throttling arrangement, refrigeration throttling device and shared throttling arrangement, on the described pipeline that heats before throttling arrangement is positioned at described flash vessel, described refrigeration throttling device is positioned in the refrigerating circuit of described source pump, and described shared throttling arrangement is positioned on the heating of described source pump and the common return that freezes.
Described throttling arrangement and the shared throttling arrangement of heating finished jointly and heated circulation throttling process; Described refrigeration throttling device and shared throttling arrangement are finished kind of refrigeration cycle throttling process jointly; Described shared throttling arrangement is that heat pump heats circulation and the shared throttling arrangement of kind of refrigeration cycle.
The described throttling arrangement that heats is that single capillary and many capillary parallelings that are in series with magnetic valve form; Unlatching by magnetic valve and disconnect and control the circulation of each capillary or open circuit.Described refrigeration throttling device is made of separately capillary.Described shared throttling arrangement is formed by connecting by electric expansion valve and capillary serial or parallel connection; Wherein, capillary is provided with and heats check valve.
Heating throttling arrangement constitutes with single electric expansion valve or single capillary; Perhaps form by electric expansion valve and capillary serial or parallel connection.Refrigeration throttling device is made up of electric expansion valve and capillary serial or parallel connection.Shared throttling arrangement is formed by single electric expansion valve or single capillary.Single restricting element is a heating power expansion valve in the combination throttling arrangement.
Use the source pump of combination throttling arrangement to comprise compressor, reversal valve, indoor heat exchanger, reservoir, flash vessel, outdoor heat exchanger, gas-liquid separator, heat throttling arrangement, refrigeration throttling device, shared throttling arrangement.Exhaust outlet of compressor joins by pipeline and reversal valve and outdoor heat exchanger, outdoor heat exchanger joins by pipeline and refrigeration throttling device and refrigeration check valve and reservoir, the refrigeration check valve by outdoor heat exchanger to the reservoir unilaterally connected, reservoir joins by pipeline and indoor heat exchanger, the pipeline that picks out on the indoor heat exchanger is connected on the reversal valve, reversal valve is connected with gas-liquid separator by pipeline, gas-liquid separator is connected with the compressor air suction mouth by pipeline, parallel connection heats throttling arrangement on the pipeline at refrigeration throttling device and refrigeration check valve two ends, flash vessel and heat check valve, heat check valve be arranged on the pipeline that flash vessel bottom place stretches out and by flash vessel to the outdoor heat exchanger unilaterally connected, flash vessel and compressor gas supplementing opening are joined to the unilaterally connected bypass check valve of compressor by pipeline and the flash vessel that is provided with on this pipeline, are provided with filter and shared throttling arrangement on the pipeline between outdoor heat exchanger and the refrigeration check valve.It is characterized in that: on the pipeline between reservoir and the flash vessel, be provided with and heat throttling arrangement, refrigeration throttling device with heat throttling arrangement and flash vessel and be and be connected in parallel, this flash vessel with heat check valve and connect, this refrigeration throttling device connect with the refrigeration check valve, heats on the junction of the pipeline between the check valve and the pipeline between the filter in the pipeline that flows into refrigeration throttling device and outflow and is provided with shared throttling arrangement.
The present invention has increased the stability and the scope of application of heat pump operation by the optimum organization of three throttling arrangement assemblies; Improved the heating capacity of air source heat pump under low temperature environment; Reduced the attenuation that heating capacity reduces with environment temperature.Make simultaneously designs simplification again, cost reduces.The embodiment of the optimum organization by above-mentioned three throttling arrangement assemblies, under heating condition, each control temperature spot of net for air-source heat pump units has all obtained optimization, can increase stability and the scope of application of net for air-source heat pump units at cold district, improve heating capacity, reduce the attenuation that heating capacity reduces with environment temperature.Under cooling condition, the refrigerating circuit refrigeration throttling device in series can solve shared throttling arrangement (preferentially selecting by heating condition) and the unmatched problem of system again.Make throttling arrangement can take into account refrigeration simultaneously and heat two kinds of operating modes.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation that heats throttling arrangement among the present invention.
Fig. 3 is the structural representation of the refrigeration throttling device among the present invention.
Fig. 4 is the structural representation of the shared throttling arrangement among the present invention.
The specific embodiment
As shown in the figure: use the source pump of combination throttling arrangement to comprise compressor 1, reversal valve 2, indoor heat exchanger 3, reservoir 4, flash vessel 7, outdoor heat exchanger 10, gas-liquid separator 11, heat throttling arrangement 13, refrigeration throttling device 14, shared throttling arrangement 15.Compressor 1 exhaust outlet joins by pipeline and reversal valve 2 and outdoor heat exchanger 10, outdoor heat exchanger 10 joins by pipeline refrigeration check valve 9 and reservoir 4, the refrigeration check valve 9 by outdoor heat exchanger 10 to reservoir 4 unilaterally connecteds, reservoir 4 joins by pipeline and indoor heat exchanger 3, the pipeline that picks out on the indoor heat exchanger 3 is connected on the reversal valve 2, reversal valve 2 links to each other with gas-liquid separator 11, and gas-liquid separator 11 links to each other with compressor 1 air entry.Flash vessel 7 in parallel and heat check valve 8 on the pipeline at refrigeration check valve 9 two ends, heat check valve 8 be arranged on the pipeline that flash vessel 7 bottoms places stretches out and by flash vessel 7 to outdoor heat exchanger 10 unilaterally connecteds, flash vessel 7 and compressor 1 join to compressor 1 unilaterally connected bypass check valve 12 by pipeline and the flash vessel 7 that is provided with on this pipeline, on the pipeline between outdoor heat exchanger 10 and the refrigeration check valve 9, be provided with filter 6, on the pipeline between reservoir 4 and the flash vessel 7, be provided with and heat throttling arrangement 13, on the pipeline that heats between throttling arrangement 13 and the reservoir 4, heating pipeline between check valve 8 and the filter 6 puts on the shelf and makes cold throttling arrangement 14, this refrigeration throttling device 14 is connected with refrigeration check valve 9, heat on the junction of the pipeline between the check valve 8 and the pipeline between the filter 6 in pipeline that flows into refrigeration throttling device 14 and outflow and to be provided with shared throttling arrangement 15, heat in pipeline that flows out refrigeration check valve 9 and inflow on the junction of pipeline of throttling arrangement 13 and the pipeline between the reservoir 4 and be provided with filter 5, reversal valve 2 is a four-way change-over valve, as shown in Figure 1.
Air source heat pump heats circulation (among Fig. 1 shown in the double-head arrow): high-temperature high-pressure refrigerant is discharged from compressor 1 and is entered indoor heat exchanger 3 by four-way change-over valve 2; After carrying out exchange heat, indoor heat exchanger 3 enters reservoir 4; Heat throttling arrangement 13 and connect reservoir 4 and flash vessel 7, refrigerant liquid enters flash vessel 7 through heating after throttling arrangement 13 is finished a throttling, saturated refrigerant vapour enters compressor 1 by bypass check valve 12 by gas supplementing opening in flash vessel 7, refrigerant liquid is finished inlet chamber external heat exchanger 10 behind the second throttle by shared throttling arrangement 15, cold-producing medium is sucked by compressor 1 by entering gas-liquid separator 11 behind the four-way change-over valve 2 after absorbing heat by outdoor heat exchanger 10.Finish and once heat circulation.
Air source heat pump kind of refrigeration cycle (among Fig. 1 shown in single arrow): high-temperature high-pressure refrigerant is discharged by four-way change-over valve 2 inlet chamber external heat exchangers 10 from compressor 1; Carry out exchange heat after shared throttling arrangement 15 is finished a throttling at outdoor heat exchanger 10, enter reservoir 4 back inflow indoor heat exchangers 3 after finishing second throttle by refrigeration throttling device 14 again, cold-producing medium is sucked by compressor 1 by entering gas-liquid separator 11 behind the four-way change-over valve 2 after absorbing heat by indoor heat exchanger 3.Finish kind of refrigeration cycle one time.
The characteristics of native system are to heat throttling arrangement 13 and shared throttling arrangement 15 and finish jointly and heat circulation throttling process; Refrigeration throttling device 14 and shared throttling arrangement 15 are finished kind of refrigeration cycle throttling process jointly.Shared throttling arrangement 15 heats circulation and the shared throttling arrangement of kind of refrigeration cycle for heat pump.The problem that heating condition and cooling condition can not be taken into account when the arrangement form of this throttling arrangement had solved the system matches of present existence.
The present invention makes up throttling arrangement can a plurality of specific embodiments, and wherein five embodiment are expressed as follows:
Embodiment 1
Shown in Fig. 2,3 and 4, the throttling arrangement among the present invention comprises: heat throttling arrangement 13, refrigeration throttling device 14, shared throttling arrangement 15.Wherein, heat throttling arrangement 13 and be preferably capillary 18 and the many capillaries that are in series with magnetic valve 19 18 combination throttling arrangement in parallel, as shown in Figure 2; Refrigeration throttling device 14 is that capillary 18 constitutes separately, as shown in Figure 3; Shared throttling arrangement 15 is that electric expansion valve 16 is in parallel with capillary 18.Wherein, capillaceous being provided with heats check valve 17.As shown in Figure 4.Such compound mode has solved electric expansion valve 16 and has satisfied heating condition, but under cooling condition unmatched problem.
Embodiment 2
Heat the single electric expansion valve 16 of throttling arrangement 13 usefulness among the embodiment 1 and replace, or single capillary 18 replaces.And described electric expansion valve 16 and capillary 18 serial or parallel connections composition.
Embodiment 3
The single capillary 18 of refrigeration throttling device 14 usefulness replaces among the embodiment 1, and described electric expansion valve 16 and capillary 18 serial or parallel connections composition.
Embodiment 4
The single electric expansion valve 16 of shared throttling arrangement 15 usefulness replaces among the embodiment 1, or single capillary 18 replaces.And described electric expansion valve 16 and capillary 18 serial or parallel connections composition.
Embodiment 5
Single restricting element replaces with heating power expansion valve in the foregoing description.
Though five preferred embodiments of the present invention are described in the accompanying drawings; still it will be appreciated that; the present invention is not limited to disclosed embodiment, does manyly to rearrange, revise and substitute under the precursor of spirit of the present invention, also belongs to protection scope of the present invention.

Claims (9)

1. one kind is used the source pump that makes up throttling arrangement, comprise compressor (1), reversal valve (2), indoor heat exchanger (3), flash vessel (7), outdoor heat exchanger (10), above-mentioned parts connects by pipeline, it is characterized in that, the source pump of described use combination throttling arrangement comprises a throttling arrangement, described throttling arrangement comprises and heats throttling arrangement (13), refrigeration throttling device (14) and shared throttling arrangement (15), the described throttling arrangement (13) that heats is positioned on the preceding pipeline of described flash vessel (7), described refrigeration throttling device (14) is positioned in the refrigerating circuit of described source pump, and described shared throttling arrangement (15) is positioned on the heating of described source pump and the common return that freezes;
Described throttling arrangement (13) and the shared throttling arrangement (15) of heating finished jointly and heated circulation throttling process; Described refrigeration throttling device (14) and shared throttling arrangement (15) are finished kind of refrigeration cycle throttling process jointly; Described shared throttling arrangement (15) heats circulation and the shared throttling arrangement of kind of refrigeration cycle for heat pump.
2. the source pump of use combination throttling arrangement according to claim 1 is characterized in that the described throttling arrangement (13) that heats is single capillary (18) and many capillary (18) formation in parallel that are in series with magnetic valve (19); Unlatching by magnetic valve (19) and disconnect and control the circulation of each capillary (18) or open circuit.
3. the source pump of use combination throttling arrangement according to claim 1 is characterized in that described refrigeration throttling device (14) is made of separately capillary (18).
4. the source pump of use combination throttling arrangement according to claim 1 is characterized in that described shared throttling arrangement (15) is formed by connecting by electric expansion valve (16) and capillary (18) serial or parallel connection; Wherein, capillary (18) is provided with and heats check valve (17).
5. the source pump of use combination throttling arrangement according to claim 1 is characterized in that, heats throttling arrangement (13) and constitutes with single electric expansion valve (16) or single capillary (18); Perhaps form by electric expansion valve (16) and capillary (18) serial or parallel connection.
6. the source pump of use combination throttling arrangement according to claim 1 is characterized in that refrigeration throttling device (14) is made up of electric expansion valve (16) and capillary (18) serial or parallel connection.
7. the source pump of use combination throttling arrangement according to claim 1 is characterized in that shared throttling arrangement (15) is formed by single electric expansion valve (16) or single capillary (18).
8. the source pump of use combination throttling arrangement according to claim 1 is characterized in that single restricting element is a heating power expansion valve in the combination throttling arrangement.
9. the source pump of use combination throttling arrangement according to claim 1, it is characterized in that, the exhaust outlet of compressor (1) joins by pipeline and reversal valve (2) and outdoor heat exchanger (10), outdoor heat exchanger (10) passes through pipeline, refrigeration check valve (9) joins with reservoir (4), the refrigeration check valve (9) by outdoor heat exchanger (10) to reservoir (4) unilaterally connected, reservoir (4) joins by pipeline and indoor heat exchanger (3), the pipeline that picks out on the indoor heat exchanger (3) is connected on the reversal valve (2), reversal valve (2) links to each other with gas-liquid separator (11), and gas-liquid separator (11) links to each other with the air entry of compressor (1); Flash vessel in parallel (7) and heat check valve (8) on the pipeline at refrigeration check valve (9) two ends, the described check valve (8) that heats is connected in series mutually with flash vessel (7), and, the described check valve (8) that heats is arranged on the pipeline that stretches out at place, flash vessel (7) bottom, and by flash vessel (7) to outdoor heat exchanger (10) unilaterally connected, flash vessel (7) and compressor (1) join to the unilaterally connected bypass check valve of compressor (1) (12) by pipeline and the flash vessel (7) that is provided with on this pipeline, on the pipeline between outdoor heat exchanger (10) and the refrigeration check valve (9), be provided with second filter (6), on the pipeline between reservoir (4) and the flash vessel (7), be provided with and heat throttling arrangement (13), heat the pipeline between throttling arrangement (13) and the reservoir (4) and heat check valve (8) and second filter (6) between pipeline enclosure set up refrigeration throttling device (14), this refrigeration throttling device (14) is connected with refrigeration check valve (9), on the junction of the pipeline that the pipeline that flows into refrigeration throttling device (14) and outflow heat check valve (8) and the pipeline between second filter (6), be provided with shared throttling arrangement (15), be provided with first filter (5) on the junction of the pipeline that the pipeline that flows out refrigeration check valve (9) and inflow heat throttling arrangement (13) and the pipeline between the reservoir (4), reversal valve (2) is a four-way change-over valve.
CN2007101331459A 2007-09-30 2007-09-30 Heat pump machine group of combined throttling set Active CN101140122B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2007101331459A CN101140122B (en) 2007-09-30 2007-09-30 Heat pump machine group of combined throttling set

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Application Number Priority Date Filing Date Title
CN2007101331459A CN101140122B (en) 2007-09-30 2007-09-30 Heat pump machine group of combined throttling set

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CN101140122B true CN101140122B (en) 2011-05-18

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Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101280979A (en) * 2008-05-26 2008-10-08 刘雄 Air conditioner heat pump device
CN103411353A (en) * 2013-07-26 2013-11-27 宁波奥克斯空调有限公司 Air-source low-temperature twin-stage compression heat pump air conditioner
CN105042925A (en) * 2015-08-05 2015-11-11 广东美的制冷设备有限公司 Air conditioning system and air conditioner with same
CN105157086A (en) * 2015-09-24 2015-12-16 无锡同方人工环境有限公司 Heating strengthening type heat supply air source heat pump system for heating radiator
CN106440552A (en) * 2016-09-12 2017-02-22 重庆美的通用制冷设备有限公司 Heat pump unit
CN106595142A (en) * 2017-02-06 2017-04-26 刘勇 Expansion device and CO2 heat pump provided with enhanced vapor injection circuit and used in arctic weather
CN108278717A (en) * 2018-01-22 2018-07-13 广东美的制冷设备有限公司 Progress control method, device, air conditioner and computer readable storage medium
CN108344114A (en) * 2018-01-22 2018-07-31 广东美的制冷设备有限公司 Progress control method, device, air conditioner and computer readable storage medium
CN108317684A (en) * 2018-01-22 2018-07-24 广东美的制冷设备有限公司 Progress control method, device, air conditioner and computer readable storage medium
CN108332372A (en) * 2018-01-22 2018-07-27 广东美的制冷设备有限公司 Progress control method, device, air conditioner and computer readable storage medium
CN108168039A (en) * 2018-01-22 2018-06-15 广东美的制冷设备有限公司 Progress control method, device, air conditioner and computer readable storage medium
CN111854056A (en) * 2019-04-26 2020-10-30 珠海格力电器股份有限公司 Control method of heat pump system

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