WO2011105662A1 - Refroidisseur d'eau - Google Patents

Refroidisseur d'eau Download PDF

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Publication number
WO2011105662A1
WO2011105662A1 PCT/KR2010/003721 KR2010003721W WO2011105662A1 WO 2011105662 A1 WO2011105662 A1 WO 2011105662A1 KR 2010003721 W KR2010003721 W KR 2010003721W WO 2011105662 A1 WO2011105662 A1 WO 2011105662A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
refrigerant
shell
compressor
chiller
Prior art date
Application number
PCT/KR2010/003721
Other languages
English (en)
Korean (ko)
Inventor
문정욱
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to EP10846689.7A priority Critical patent/EP2541164A4/fr
Priority to US13/580,812 priority patent/US20130061628A1/en
Publication of WO2011105662A1 publication Critical patent/WO2011105662A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/02—Details of evaporators
    • F25B2339/024—Evaporators with refrigerant in a vessel in which is situated a heat exchanger
    • F25B2339/0242—Evaporators with refrigerant in a vessel in which is situated a heat exchanger having tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/18—Safety or protection arrangements; Arrangements for preventing malfunction for removing contaminants, e.g. for degassing

Definitions

  • the present invention relates to a chiller for supplying cold water to cold water demand, and more particularly to a chiller capable of recovering oil inside an evaporator.
  • a chiller supplies cold water to a cold water demand source such as an air conditioner or a freezer, and includes a compressor, a condenser, an expander, and an evaporator through which the refrigerant is circulated.
  • the chiller consists of a water refrigerant heat exchanger to exchange heat between the refrigerant and water (hereinafter referred to as cold water), and is connected to the cold water demand source and the water pipe to circulate and supply cold water cooled by the refrigerant to the cold water demand destination.
  • the chiller discharges oil together with the refrigerant when the compressor is driven, and the oil passes through the condenser and the expander together with the refrigerant, and then flows into the evaporator and accumulates in the evaporator.
  • the oil introduced into the evaporator is located on the upper side of the refrigerant.
  • the oil prevents the outflow of the gaseous refrigerant, which may lower the capacity.
  • an object of the present invention is to provide a chiller that can maintain the oil level in the evaporator and can prevent a decrease in capacity due to oil excess.
  • Another object of the present invention is to provide a chiller capable of controlling the region of the refrigerant and the oil region to maximize the contact area between the refrigerant and the inner tube.
  • Still another object of the present invention is to provide a chiller capable of continuously cooling cold water without an oil recovery operation for recovering oil in the evaporator.
  • the chiller according to the present invention includes a compressor for compressing a refrigerant; A condenser for condensing the refrigerant compressed by the compressor; An expander to expand the refrigerant condensed in the condenser; A refrigerant expanded in the expander includes an evaporator for cooling cold water, the evaporator comprising: a shell having a space through which the refrigerant passes; An inner tube through which the cold water passes and the cold water arranged to exchange heat with the refrigerant; And an oil overflow member disposed inside the shell and forming an oil passage between the shell and flowing the oil through the oil passage to the inner bottom of the shell after the oil overflows the oil passage.
  • the oil overflow member has an accommodating space in which a refrigerant expanded from the expander is accommodated and at least a portion of the inner tube is located.
  • the oil overflow member has an upper surface open.
  • the oil overflow member includes a left portion spaced apart from an inner left side surface of the shell, and an inner right side surface of the shell and a right side spaced apart from the left side portion.
  • the oil overflow member has an inner tube through hole through which the inner tube penetrates at least one of the left side and the right side.
  • the oil overflow member further includes a circumference portion formed between the left side portion and the right side portion and forming the accommodation space between the left side portion and the right side portion.
  • the circumference is spaced apart from the shell.
  • the circumferential portion is formed in a semicircular shape in cross section.
  • An oil overflow member fixing member is installed between the shell and the oil overflow member to fix the oil overflow member spaced apart from the shell.
  • the shell has a coolant outlet formed at an upper portion thereof, an oil outlet formed at a lower portion thereof, and the oil overflow member is connected to a coolant inlet portion of the refrigerant expanded from the expander to the receiving space.
  • the shell has a coolant inlet portion through which the coolant inlet portion passes.
  • the refrigerant inlet portion penetrating portion is spaced apart from the oil outlet portion.
  • the oil outlet is connected to an oil return passage for recovering oil to the suction side of the compressor.
  • the chiller connects an ejector, an ejector pipe of the compressor and the ejector, and an ejector suction pipe for guiding a part of the high pressure refrigerant discharged from the compressor to the ejector, and the evaporator and the ejector to connect the ejector to the ejector.
  • An evaporator oil suction pipe for guiding oil in the evaporator to be sucked into the ejector when the refrigerant flows, and an ejector outlet pipe for recovering the refrigerant and oil passing through the ejector to the compressor.
  • the oil overflow member is installed at a height at which the oil can overflow when the compressor is fully driven.
  • the chiller according to the present invention configured as described above can be managed the maximum height of the oil inside the shell, the gas phase refrigerant can be sucked into the compressor quickly, the advantage of preventing the performance degradation due to the excessive height of the oil forming layer There is this.
  • the oil of the oil overflow member can be discharged quickly there is an advantage that the performance is improved.
  • FIG. 1 is a block diagram of an embodiment of a chiller according to the present invention.
  • FIG. 2 is a cross-sectional view of the evaporator shown in FIG.
  • FIG 3 is a cross-sectional view showing an evaporator of another embodiment of a chiller according to the present invention.
  • FIG. 1 is a block diagram of an embodiment of a chiller according to the present invention.
  • the chiller includes a compressor (2) for compressing a refrigerant, a condenser (4) for condensing the refrigerant compressed in the compressor (2), an expander (6) for expanding the refrigerant condensed in the condenser (4), and
  • the refrigerant expanded in the expander 6 includes an evaporator 8 for cooling the cold water.
  • the compressor 2 is to compress the refrigerant evaporated in the evaporator 8, may be composed of one of a rotary compressor, a scroll compressor, a screw compressor, may be configured to vary the operating capacity, and compress the refrigerant in multiple stages Can be configured.
  • the compressor 2 includes a compressor suction pipe 10 through which refrigerant evaporated in the evaporator 8 passes to be sucked into the compressor 2, and a compressor discharge pipe 12 through which refrigerant discharged from the compressor 2 passes. Connected.
  • An oil separator 14 may be installed between the compressor 2 and the condenser 4 to separate oil discharged with the refrigerant from the refrigerant when the refrigerant is discharged from the compressor 2.
  • the oil separator 14 is connected to the compressor suction pipe 10 and the oil recovery pipe 18, and the oil separated from the refrigerant in the oil separator 14 is passed through the oil recovery pipe 18 and the compressor suction pipe 10. Recovered to the compressor (2).
  • the condenser 4 is a condensation of the refrigerant compressed by the compressor 2, may be configured as a shell-tube type heat exchanger, it may be configured as a fin-tube type heat exchanger.
  • the condenser 4 When the condenser 4 is configured as a shell-tube type heat exchanger, a condensation space for condensing the refrigerant is formed inside the shell, and a cooling water tube through which the cooling water passes is disposed in the condensation space, and the cooling water tube is a cooling tower. It is connected to the cooling water supply source of the cooling water and the cooling water pipes (24) 26, the refrigerant is heat exchanged with the cooling water and condensed while passing through the shell.
  • a condenser fan installed around the condenser 4 supplies cold air, such as outdoor air, to the condenser 4, and the refrigerant passing through the tube passes through the outdoor air, etc. Heat exchanges with cold air to condense.
  • the condenser 4 is connected to the expander 6 and the condenser-expander connection pipe 28.
  • the expander 6 is the expansion of the refrigerant condensed in the condenser, consisting of a capillary tube or electronic expansion valves (EEV).
  • EEV electronic expansion valves
  • the evaporator 8 is a refrigerant evaporated in the expander 6 is evaporated, it is connected to the expander 6 and the expander-evaporator connecting pipe 30.
  • the evaporator 8 is composed of a shell-tube type heat exchanger, and the refrigerant introduced into the evaporator 8 is evaporated inside the evaporator 8 and drawn into the compressor suction pipe 10.
  • the oil which cannot be separated from the oil separator 14 passes through the condenser 4 and the expander 6 together with the refrigerant, and then flows into the evaporator 8 and is located above the liquid refrigerant of the evaporator 8. do.
  • the evaporator 8 is connected to an evaporator oil recovery passage 32 for recovering oil inside the evaporator 8 to the suction pipe 10 or the compressor 2 of the compressor.
  • the evaporator oil return flow path 32 is a kind of bypass flow path that allows oil to bypass some or all of the compressor suction pipe 10.
  • One end of the evaporator oil recovery flow path 32 is connected to the evaporator 8 and the other end is connected to one side of the suction pipe 10 of the compressor or one side of the compressor 2.
  • the evaporator oil recovery flow path 32 may recover oil only by the suction force of the compressor 2, and may also recover oil using the ejector 34.
  • the ejector 34 connects the compressor discharge pipe 12 and the ejector 34 to eject some of the high-pressure refrigerant discharged from the compressor 2.
  • the ejector suction pipe 36 guiding to the 34 and the evaporator 8 and the ejector 34 are connected so that the oil in the evaporator 8 is sucked into the ejector 34 when a high-pressure refrigerant flows through the ejector 34.
  • Guide evaporator oil suction pipe 38 and the ejector outlet pipe 40 for recovering the refrigerant and oil passing through the ejector 34 to the compressor suction pipe 10 or the compressor (2).
  • the ejector 34 may be configured as a vacuum ejector to generate a suction force on the evaporator oil suction pipe 38 when the refrigerant passing through the ejector suction pipe 36 passes through the ejector 34 at high speed.
  • the ejector 34 has a main flow path formed between the ejector suction pipe 36 and the evaporator oil suction pipe 38, and a confluence flow path is formed between the main flow path and the evaporator oil suction pipe 38.
  • the ejector 34 may have a confluence of the conduits orthogonal to the main flow passage, and the overall shape of the main flow passage and the confluence flow passage may have a “T” shape.
  • the evaporator 8 is connected to a cold water demand source such as a cooling coil and cold water pipes 42 and 44, and the cold water circulates through the cold water pipe 42, the evaporator 8, the cold water pipe 44, and the cold water demand destination, and the cold water demand destination. Cool down.
  • a cold water demand source such as a cooling coil and cold water pipes 42 and 44
  • FIG. 2 is a schematic diagram of the evaporator shown in FIG. 1
  • FIG. 3 is a partially cutaway sectional view of the evaporator shown in FIG. 1.
  • the evaporator 8 has a shell 52 having a space 50 through which a refrigerant passes, and an oil passage P disposed inside the shell 52 and forming an oil passage P between the shell 52 and the oil being oil.
  • the oil overflow member 54 which flows through the oil passage P and flows to the inner lower portion of the shell 52 through the oil passage P, and the inner tube 56 where the cold water passes and the cold water is arranged to exchange heat with the refrigerant.
  • the shell 52 forms an outer appearance of the evaporator 8, is formed in a cylindrical shape having a space 50 formed therein, and is formed long in the horizontal direction.
  • the shell 52 has a coolant outlet 62 formed at an upper portion thereof, and an oil outlet 64 formed at a lower portion thereof.
  • the shell 52 has a compressor suction pipe 10 connected to the refrigerant outlet 62, and an evaporator oil recovery passage 32 connected to the oil outlet 64.
  • the shell 52 is provided with a refrigerant inlet portion 66 through which the refrigerant inlet portion 76 to be described later passes.
  • the refrigerant inlet part 66 is spaced apart from the oil outlet 65.
  • the oil overflow member 54 has an accommodating space S formed therein, and the accommodating space S receives a refrigerant expanded from the expander 6 and an inner tube 56 is located therein.
  • the oil overflow member 54 is a partition member that partitions the space 50 of the shell 52 into the accommodation space S and the oil passage P, and is a kind of container in which refrigerant and oil are contained.
  • the introduced refrigerant is evaporated while exchanging heat with cold water of the inner tube 56 in the receiving space (S).
  • an oil forming layer A is formed at the top of the chiller, and a refrigerant layer B in which the refrigerant is located is formed below the oil forming layer A.
  • the inner tube 56 is It is preferable to be installed at a height lower than the upper end of the refrigerant layer (B).
  • the oil overflow member 54 has an upper surface open.
  • the gaseous refrigerant evaporated in the accommodation space S passes through the upper surface of the oil overflow member 54 and then flows out to the refrigerant outlet 62.
  • the oil overflow member 54 has a left portion 70 spaced apart from the inner left surface 52A of the shell 52, and a right portion 72 spaced apart from the inner right surface 52B and the left portion 70 of the shell 52. It includes.
  • the oil overflow member 54 has a gap between the left side 70 and the right side 72 greater than the gap between the left side 52A and the left side 70 of the shell 52, and the right side 52B of the shell 52. ) And the gap between the right side portion 72. That is, the length of the accommodation space (S) is formed longer than the length of the oil passage (P).
  • the oil overflow member 54 further includes a circumferential portion 74 formed between the left portion 70 and the right portion 72 and forming an accommodation space S between the left portion 70 and the right portion 72. do.
  • the circumference 74 is spaced apart from the shell 52.
  • the circumferential portion 74 is formed in a semicircular shape in cross section.
  • the circumferential portion 74 is connected to a refrigerant inlet 76 to allow the refrigerant expanded in the expander 6 to enter the accommodation space S.
  • the refrigerant inlet 76 is a communication tube communicating with the oil overflow member 54 such that the refrigerant expanded in the expander 6 directly flows into the oil overflow member 54.
  • the coolant inlet 76 is integrally formed with the oil overflow member 54 so as to be connected to the expander-evaporator connecting pipe 30 so that a part of the oil overflow member 54 may function as the coolant inlet 76. Do.
  • the refrigerant inlet 76 is a portion of the expander-evaporator connecting pipe 30 through the shell 52 is connected to the oil overflow member 54 by the portion of the expander-evaporator connecting pipe 30 is the refrigerant inlet It is also possible to function as 76.
  • the refrigerant inlet 76 has one end connected to the oil overflow member 54 and the other end connected to the expander-evaporator connection pipe 30 to communicate the expander-evaporator connection pipe 30 and the oil overflow member 54. It is also possible to consist of a connector.
  • the shell 52 and the oil overflow member 54 have a left oil passage formed between the left side 52A and the left side 70 of the shell 52, and the right side 52B and the right side of the shell 52.
  • a right oil passage is formed between the 72, and a circumferential oil passage is formed between the circumferential surface of the shell 52 and the circumferential portion 74.
  • At least one of the left portion 70 and the right portion 72 may be in close contact with the shell 52 so that at least one of the left oil passage and the right oil passage may not be formed.
  • the oil overflow member 54 may be such that the circumferential portion 74 is in close contact with the shell 52 so that the circumferential side oil passage is not formed.
  • both the left portion 70, the right portion 72, and the circumferential portion 74 may be spaced apart from the shell 52 to form an oil passage therebetween.
  • the oil overflow member 54 includes both the shell portion 52, the left portion 70, the right portion 72, and the circumference portion 74 so that the coolant filled in the upper portion of the accommodation space S of the oil overflow member 54 flows quickly. Preferably spaced apart).
  • oil overflow member fixing members 71, 73, 75 may be installed to fix the oil overflow member 54 to be spaced apart from the shell 52. have.
  • the oil overflow member 54 is a refrigerant and oil is contained in the receiving space (S) between the left portion 70, the right portion 72 and the circumference 74, the oil overflow member of the inner tube 56
  • the portion located in the accommodation space (S) of the (54) evaporates the refrigerant in the accommodation space (S)
  • the oil overflowed in the oil overflow member 54 is the oil overflow member 54 and the shell through the oil passage (P) It flows between 52, and it flows out.
  • the oil overflow member 54 is installed at a height at which oil can overflow when the compressor 2 is fully driven.
  • the oil overflow member 54 When the oil overflow member 54 is too high at the top of the oil, the oil cannot overflow, and when the height at the top is too low, the coolant may overflow into the oil passage P together with the oil even in the case of partial load. It is preferable to set the height of the upper end on the basis of the maximum load, and the height that the oil of the accommodation space (S) can overflow when the full drive of the compressor 2, that is, 100% capacity operation of the compressor 2 It is most desirable to set the top height to.
  • the oil overflow member 54 has an inner tube through hole 78 through which the inner tube 56 penetrates at least one of the left portion 70 and the right portion 72.
  • At least a portion of the inner tube 56 is installed to be located in the accommodation space (S), it is most preferably installed to be located inside the accommodation space (S) as much as possible.
  • the oil which is not separated from the refrigerant in the oil separator 14 flows together with the refrigerant to the condenser 4, the refrigerant condenses in the condenser 4, and the refrigerant and oil flow into the expander 6.
  • the condensed refrigerant expands in the expander 6 and enters the evaporator 8 together with the oil.
  • the refrigerant and oil introduced into the evaporator 8 are contained in the accommodation space S of the oil overflow member 54 through the refrigerant inlet 76.
  • the oil and the refrigerant contained in the accommodation space (S) are evaporated while the refrigerant is heat-exchanged with the inner tube (56), and the oil is positioned above the refrigerant layer (A) to form an oil forming layer (B), wherein the oil forming If the height of the layer B is higher than the top of the oil overflow member 54, oil and some liquid refrigerant flow over the top of the oil overflow member 54 into the oil passage P.
  • the gaseous refrigerant evaporated in the receiving space (S) of the oil overflow member 54 passes through the oil forming layer (B) remaining in the receiving space (S), wherein the maximum height of the oil forming layer (B) is constant
  • the gaseous refrigerant rapidly passes through the oil forming layer (B).
  • the gaseous refrigerant passing through the oil forming layer B passes through the refrigerant outlet 62 after the oil overflow member 54 flows upward, and is sucked into the compressor suction pipe 10.
  • the refrigerant sucked into the compressor suction pipe (10) is sucked into the compressor (2) together with the evaporator oil recovery flow path (32) and the oil recovered through the oil recovery pipe (18), and the oil and the refrigerant are circulated as described above. Recovery continues.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Lubricants (AREA)

Abstract

La présente invention porte sur un refroidisseur d'eau qui comprend : un compresseur apte à comprimer un fluide frigorigène ; un condenseur apte à condenser le fluide frigorigène comprimé par le compresseur ; un détendeur apte à détendre le fluide frigorigène condensé par le condenseur ; et un évaporateur dans lequel le fluide frigorigène détendu par le détendeur refroidit de l'eau froide. L'évaporateur comprend : une enveloppe comprenant intérieurement un espace à travers lequel le fluide frigorigène passe ; un tube intérieur à travers lequel de l'eau froide passe et qui est disposé de telle sorte que l'eau froide échange de la chaleur avec le fluide frigorigène ; et un élément de trop-plein d'huile disposé dans l'enveloppe et qui définit un passage d'huile entre l'élément de trop-plein d'huile et l'enveloppe, de telle sorte que l'huile déborde dans le passage d'huile puis s'écoule vers une partie intérieure plus basse de l'enveloppe, le long du passage d'huile. Etant donné que la hauteur maximale d'huile dans l'enveloppe peut être réglée, le fluide frigorigène gazeux peut être rapidement absorbé dans le compresseur pour empêcher la détérioration des performances due à une hauteur excessive d'une couche de mousse d'huile.
PCT/KR2010/003721 2010-02-25 2010-06-10 Refroidisseur d'eau WO2011105662A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10846689.7A EP2541164A4 (fr) 2010-02-25 2010-06-10 Refroidisseur d'eau
US13/580,812 US20130061628A1 (en) 2010-02-25 2010-06-10 Chiller

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2010-0017177 2010-02-25
KR1020100017177A KR20110097367A (ko) 2010-02-25 2010-02-25 칠러

Publications (1)

Publication Number Publication Date
WO2011105662A1 true WO2011105662A1 (fr) 2011-09-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/003721 WO2011105662A1 (fr) 2010-02-25 2010-06-10 Refroidisseur d'eau

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Country Link
US (1) US20130061628A1 (fr)
EP (1) EP2541164A4 (fr)
KR (1) KR20110097367A (fr)
WO (1) WO2011105662A1 (fr)

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JP6096551B2 (ja) * 2013-03-26 2017-03-15 荏原冷熱システム株式会社 ターボ冷凍機
KR101598697B1 (ko) * 2014-06-12 2016-02-29 엘지전자 주식회사 전열관
WO2015188266A1 (fr) * 2014-06-10 2015-12-17 Vmac Global Technology Inc. Procédés et appareil pour simultanément refroidir et séparer un mélange de gaz chaud et de liquide
CN105299944B (zh) * 2015-11-05 2018-01-23 谭洪德 一种满液式中央空调系统
KR101983667B1 (ko) 2016-09-29 2019-05-29 디앤이에스 주식회사 저유량 냉동기와 냉난방 유체의 저유량 제어를 이용한 냉난방 에너지절약형 자동제어 시스템
EP3688383A1 (fr) 2017-09-25 2020-08-05 Johnson Controls Technology Company Système d'éjecteur moteur à huile à deux étapes
JP7372136B2 (ja) * 2019-12-24 2023-10-31 株式会社前川製作所 油分離装置および油分離方法

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EP1477670A2 (fr) * 2003-05-08 2004-11-17 Kabushiki Kaisha Toyota Jidoshokki Dispositif séparateur d'huile pour compresseur à réfrigérant
JP2005055113A (ja) * 2003-08-06 2005-03-03 Denso Corp 蒸気圧縮式冷凍機
KR100590653B1 (ko) * 2004-06-17 2006-06-19 모딘코리아 유한회사 에어컨의 압축기 오일 분리장치
JP2006194534A (ja) * 2005-01-14 2006-07-27 Denso Corp エジェクタサイクル

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EP2541164A4 (fr) 2016-09-07

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