CN101639306B - Refrigeration circulation system of heat exchanger of air conditioner outdoor unit - Google Patents

Refrigeration circulation system of heat exchanger of air conditioner outdoor unit Download PDF

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Publication number
CN101639306B
CN101639306B CN2008100539859A CN200810053985A CN101639306B CN 101639306 B CN101639306 B CN 101639306B CN 2008100539859 A CN2008100539859 A CN 2008100539859A CN 200810053985 A CN200810053985 A CN 200810053985A CN 101639306 B CN101639306 B CN 101639306B
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China
Prior art keywords
heat exchanger
refrigerant
gas
time
circulation
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Expired - Fee Related
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CN2008100539859A
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Chinese (zh)
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CN101639306A (en
Inventor
黄杨
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LG Electronics Tianjin Appliances Co Ltd
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LG Electronics Tianjin Appliances Co Ltd
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Priority to CN2008100539859A priority Critical patent/CN101639306B/en
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Application granted granted Critical
Publication of CN101639306B publication Critical patent/CN101639306B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a refrigeration system of a heat exchanger of an air conditioner outdoor unit. The refrigeration system is divided into twice circulation; when entering the heat exchanger through a main refrigerant inlet, gaseous refrigerant enters a heat exchanger through a plurality of first refrigerant inlet pipes connected in parallel for the first circulation; the gas-liquid mixed refrigerant after the first circulation flows into a gas-liquid separator outside the heat exchanger through a plurality of first refrigerant outlet pipes; the gaseous refrigerant flows back to the heat exchanger again through a secondary gaseous refrigerant inlet pipe positioned on the upper part of the gas-liquid separator for the secondary circulation in the gas-liquid separator; and the liquid refrigerant after the secondary circulation is converged with refrigerant at a secondary liquid refrigerant inlet pipe positioned on the lower part of the gas-liquid separator, continuously carries out heat exchange in the heat exchanger and finally flows out from a main refrigerant outlet. The refrigeration circulation system increases the length of a two-phase area, fully uses phase change of gas to exchange heat, and improves the efficiency of the whole refrigeration system.

Description

The refrigeration system of heat exchanger of air conditioner outdoor unit
Technical field
The present invention relates to a kind of air-conditioning, especially the refrigeration system of heat exchanger of air conditioner outdoor unit.
Background technology
Air-conditioning is a kind of device that makes its inner refrigerant carry out the refrigeration of being made up of compression process, condensation process, expansion process and evaporation process or heat circulation.When air-conditioning carries out kind of refrigeration cycle; The refrigerant that becomes high-temperature high-pressure state through compressor compresses can flow to condenser under the guiding of cross valve; And in condenser, dispel the heat to the outside; When flowing through expansion valve, significantly reduce its temperature and pressure then, this low temperature, low pressure refrigerant can absorb heat when flowing through evaporimeter subsequently, flow back in the compressor again through fluid reservoir at last.Wherein, compression process, condensation process and expansion process are in the off-premises station of air-conditioning, to carry out, and evaporation process then is to carry out under the effect of blowing fan and evaporimeter in indoor set.It is then opposite with above-mentioned kind of refrigeration cycle process to heat circulation.Air-conditioning is divided into domestic air conditioning and business air conditioner usually.Wherein business air conditioner is divided into duct type and embedded two kinds, and it mainly is used in the buildings such as office building, market.And the pipe type commercial indoor apparatus of air conditioner can be divided into vertical and horizontal two kinds according to its structure.
Which kind of air-conditioning no matter, the refrigeration system of its heat exchanger is as shown in Figure 1, under the parcel of the fin 100 of heat exchanger; Condenser pipe dish knot is in fin 100, and cold-producing medium is the overheated gas refrigerant when getting into condenser (heat exchanger), and the overheated gas refrigerant is 200 inflows from the refrigerant main entrance; When getting into heat exchanger, can be divided into a plurality of branch road refrigerant inlet pipes, in this example two branch road refrigerant inlet pipes; After refrigerant flows into from different refrigeration branch roads; Become liquid through after the heat exchange, after converging through elbow 300, flow out from refrigerant general export 400 at last.But each branch road flow of the heat exchanger of prior art is difficult for distributed uniform, thereby the part cold-producing medium can not be condensed into liquid, and the latent heat of condensation segment can not make full use of.The existence of gas so not only cause heat exchanger efficiency not high, owing to also can influence overall system efficiency.
Summary of the invention
Technical problem to be solved by this invention is, a kind of length that increases two-phase section is provided, and the refrigeration system of the heat exchanger of air conditioner outdoor unit of heat exchange is carried out in the phase transformation that makes full use of gas.
In order to solve the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of refrigeration system of heat exchanger of air conditioner outdoor unit; The condenser pipe of the fin parcel lower wall knot that is included in heat exchanger in fin, refrigerant main entrance that cold-producing medium gets into heat exchanger, through the refrigerant general export that refrigerant after the heat exchange flows out, said refrigeration system is divided into secondary cycle, when gaseous coolant gets into heat exchanger through the refrigerant main entrance; The circulation first time is carried out in the refrigerant inlet pipe entering heat exchange first time through a plurality of parallel connections; For the first time the refrigerant of the gas-liquid mixed after the circulation through a plurality of first time refrigerant go out in the gas-liquid separator that pipe flow into the heat exchanger outside, in gas-liquid separator, gaseous coolant flows back to heat exchanger once more through the gaseous coolant inlet pipe second time that is arranged in gas-liquid separator top; Carry out the circulation second time; Liquid refrigerants after the circulation converges with the liquid refrigerants inlet pipe second time that is positioned at the gas-liquid separator bottom for the second time, continues in heat exchanger, to carry out heat exchange again, flows out from the refrigerant general export at last.
Described first time, the refrigerant inlet pipe was positioned at the top of heat exchanger, and the gaseous coolant inlet pipe is positioned at the middle part of heat exchanger for the second time, and the liquid refrigerants inlet pipe is positioned at the middle and lower part of heat exchanger for the second time.
The invention has the beneficial effects as follows: increase the length of two-phase section, heat exchange is carried out in the phase transformation that makes full use of gas.Because the latent heat that discharges in the phase transition process changes much larger than sensible heat, thereby has improved efficiency of heat exchanger greatly.Simultaneously, can guarantee that cold-producing medium all is condensed into gas, improves the efficient of whole refrigeration system.
Description of drawings
Fig. 1 is the refrigeration system of the heat exchanger of air conditioner outdoor unit of prior art.
Fig. 2 is the refrigeration system of heat exchanger of air conditioner outdoor unit of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further explain:
As shown in Figure 2; The refrigeration system of heat exchanger of air conditioner outdoor unit of the present invention; The condenser pipe of the fin 1 parcel lower wall knot that is included in heat exchanger in fin, refrigerant main entrance 2 that cold-producing medium gets into heat exchanger, through the refrigerant general export 4 that refrigerant after the heat exchange flows out, said refrigeration system is divided into secondary cycle, when gaseous coolant gets into heat exchangers through refrigerant main entrance 2; The circulation first time is carried out in the refrigerant inlet pipe 5 entering heat exchanges first time through a plurality of parallel connections; For the first time the refrigerant of the gas-liquid mixed after the circulation through a plurality of first time refrigerant go out in the gas-liquid separator 3 that pipe 6 flow into the heat exchanger outside, in gas-liquid separator 3, gaseous coolant 8 flows back to heat exchanger once more through the gaseous coolant inlet pipe second time that is arranged in gas-liquid separator 3 tops; Carry out the circulation second time; For the second time the liquid refrigerants after the circulation 9 converges with the liquid refrigerants inlet pipe second time that is positioned at gas-liquid separator 3 bottoms, continues in heat exchanger, to carry out heat exchange again, flows out from refrigerant general export 4 at last.
Described first time, refrigerant inlet pipe 5 was positioned at the top of heat exchanger, and gaseous coolant inlet pipe 8 is positioned at the middle part of heat exchanger for the second time, and liquid refrigerants inlet pipe 9 is positioned at the middle and lower part of heat exchanger for the second time.
Cold-producing medium is an overheated gas when getting into condenser (heat exchange), and at first through the part of condenser, heat exchange gets into two-phase section.Import gas-liquid separator 3 with cold-producing medium this moment, at gas-liquid separator 3 gas-liquid two-phase in the cold-producing medium separated, and gas comes back to condensing heat-exchange in the heat exchanger, up to becoming liquid fully.Liquid mixing in condensed liquid and the gas-liquid separator is left heat exchanger after cold.The present invention increases the length of two-phase section, and heat exchange is carried out in the phase transformation that makes full use of gas.
In sum, content of the present invention is not confined in the above embodiments, and the knowledgeable people in the same area can propose other embodiment easily within technological guidance's thought of the present invention, but this embodiment is included within the scope of the present invention.

Claims (2)

1. the refrigeration system of a heat exchanger of air conditioner outdoor unit; The condenser pipe of the fin parcel lower wall knot that is included in heat exchanger in fin, refrigerant main entrance that cold-producing medium gets into heat exchanger, the refrigerant general export that flows out through refrigerant after the heat exchange; It is characterized in that said refrigeration system is divided into secondary cycle, when gaseous coolant gets into heat exchanger through refrigerant main entrance (2); The circulation first time is carried out in the refrigerant inlet pipe first time (5) entering heat exchange through a plurality of parallel connections; For the first time the refrigerant of the gas-liquid mixed after the circulation through a plurality of first time refrigerant go out in the gas-liquid separator (3) that pipe (6) flow into the heat exchanger outside, in gas-liquid separator (3), gaseous coolant flows back to heat exchanger once more through the gaseous coolant inlet pipe second time (8) that is arranged in gas-liquid separator (3) top; Carry out the circulation second time; Liquid refrigerants after the circulation converges with the liquid refrigerants inlet pipe second time (9) that is positioned at gas-liquid separator (3) bottom for the second time, continues in heat exchanger, to carry out heat exchange again, flows out from refrigerant general export (4) at last.
2. the refrigeration system of heat exchanger of air conditioner outdoor unit according to claim 1; It is characterized in that; The described refrigerant inlet pipe first time (5) is positioned at the top of heat exchanger, and gaseous coolant inlet pipe (8) is positioned at the middle part of heat exchanger for the second time, and liquid refrigerants inlet pipe (9) is positioned at the middle and lower part of heat exchanger for the second time.
CN2008100539859A 2008-07-29 2008-07-29 Refrigeration circulation system of heat exchanger of air conditioner outdoor unit Expired - Fee Related CN101639306B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008100539859A CN101639306B (en) 2008-07-29 2008-07-29 Refrigeration circulation system of heat exchanger of air conditioner outdoor unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008100539859A CN101639306B (en) 2008-07-29 2008-07-29 Refrigeration circulation system of heat exchanger of air conditioner outdoor unit

Publications (2)

Publication Number Publication Date
CN101639306A CN101639306A (en) 2010-02-03
CN101639306B true CN101639306B (en) 2012-07-18

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104677170B (en) * 2011-01-21 2017-12-05 大金工业株式会社 Heat exchanger and air-conditioning device
JP5741680B1 (en) * 2013-12-27 2015-07-01 ダイキン工業株式会社 Heat exchanger and air conditioner
CN110094902A (en) * 2019-05-29 2019-08-06 珠海格力电器股份有限公司 Refrigerant flow and its design method
CN113970126A (en) * 2020-07-07 2022-01-25 广东美的制冷设备有限公司 Air conditioner, control method of air conditioner and storage medium

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