WO2010029956A2 - Compresseur hermétique - Google Patents

Compresseur hermétique Download PDF

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Publication number
WO2010029956A2
WO2010029956A2 PCT/JP2009/065784 JP2009065784W WO2010029956A2 WO 2010029956 A2 WO2010029956 A2 WO 2010029956A2 JP 2009065784 W JP2009065784 W JP 2009065784W WO 2010029956 A2 WO2010029956 A2 WO 2010029956A2
Authority
WO
WIPO (PCT)
Prior art keywords
discharge
stator
lubricating oil
refrigerant
rotating shaft
Prior art date
Application number
PCT/JP2009/065784
Other languages
English (en)
Japanese (ja)
Other versions
WO2010029956A3 (fr
Inventor
憲幸 小林
Original Assignee
サンデン株式会社
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 サンデン株式会社 filed Critical サンデン株式会社
Priority to EP09813102A priority Critical patent/EP2327882A4/fr
Priority to AU2009292496A priority patent/AU2009292496B2/en
Priority to US13/063,164 priority patent/US20110165000A1/en
Priority to CN2009801350029A priority patent/CN102144097A/zh
Publication of WO2010029956A2 publication Critical patent/WO2010029956A2/fr
Publication of WO2010029956A3 publication Critical patent/WO2010029956A3/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/806—Pipes for fluids; Fittings therefor

Definitions

  • the present invention relates to a hermetic compressor, and more particularly, to a discharge passage for refrigerant and lubricating oil.
  • a scroll unit that performs a series of refrigerant suction, compression, and discharge processes is provided in a hermetic container, and lubricating oil is used for the scroll unit and the drive unit of the scroll unit.
  • This lubricating oil functions not only as a lubricant for the sliding surface and bearings in the scroll unit, but also as a seal for the sliding surface, and is stored in the oil storage chamber at the bottom of the hermetic container for temporary cooling. It circulates in the airtight container while mixing.
  • the refrigerant is often discharged out of the sealed container through a discharge pipe provided at the upper part of the sealed container.
  • the discharge pipe is provided at the upper part of the sealed container in this way, the refrigerant is discharged from the scroll unit.
  • a mechanism for guiding the lubricating oil and the refrigerant to the oil storage chamber at the lower part of the sealed container so as not to flow directly to the discharge pipe is required at the upper part of the scroll unit, and there is a problem that the number of parts increases and the structure tends to be complicated.
  • the discharge pipe is provided in the body portion of the sealed container, thereby simplifying the structure at the top of the scroll unit. JP-A-9-287579 JP 2004-316500 A JP 2006-132419 A
  • the present invention has been made based on the above-described circumstances, and the object of the present invention is to sufficiently separate the refrigerant from the lubricating oil and efficiently discharge the refrigerant outside the sealed container while simplifying the structure.
  • the object is to provide a hermetic compressor.
  • a hermetic compressor includes a cylindrical body, a discharge chamber formed above the body, and a lubrication formed below the body.
  • a sealed container having an oil storage chamber in which discharge pressure acts in the barrel, a rotary shaft extending through the barrel and supported rotatably via a bearing, and housed in the barrel and rotating
  • a stator including a rotor that is driven by energization and rotated integrally with the rotating shaft around the rotating shaft, an armature winding that rotates the rotor around the rotor, and the stator
  • An electric motor having a supply flow path for guiding lubricating oil to the oil storage chamber, and housed in the body portion on the upper side of the electric motor and driven by the rotating shaft to suck, compress and discharge the working fluid
  • a spindle frame that is disposed between the motor and the electric motor and fixes the compression unit and supports the rotating shaft via the bearing, and the compression unit, the inside
  • a discharge passage an oil separation plate that is provided in an upper portion of the stator and separates lubricating oil from a refrigerant guided from the discharge passage, and is provided on the trunk portion below the spindle frame, It has an oil separation plate and a discharge pipe for discharging the refrigerant that has passed through the stator to the outside of the hermetic container.
  • the discharge flow path is formed inside the compression unit and the main shaft frame and between the compression unit and the main shaft frame and the side wall surface of the trunk portion. It is the path
  • the discharge flow path is through a path of a hole drilled in the compression unit and the spindle frame.
  • the refrigerant and the lubricating oil are provided in at least one of the inside of the compression unit and the spindle frame and between the compression unit and the spindle frame and the inner wall surface of the body portion of the sealed container.
  • a discharge flow path is provided so as to lead to the stator of the electric motor, and the refrigerant is discharged from the discharge tube provided in the body of the closed container, so that the lubricating oil and the refrigerant are directly connected to the discharge tube. It is not necessary to provide a mechanism (discharge head) for guiding the oil storage chamber below the sealed container so as not to flow in the upper part of the compression unit, the structure of the upper part of the sealed container can be simplified, and the cost can be reduced.
  • the refrigerant and the lubricating oil pass through not only the oil separation plate but also the stator including the armature winding, so that the refrigerant and the lubricating oil can be reliably separated, and only the refrigerant can be discharged out of the sealed container satisfactorily. it can.
  • the hermetic compressor of the second aspect since the discharge flow path is a pipe, the refrigerant and the lubricating oil can be reliably guided to the stator of the electric motor with a simple structure.
  • the hermetic compressor of the third aspect since the discharge flow path passes through the passages of the holes provided in the compression unit and the spindle frame, the refrigerant and the lubricating oil are surely connected to the stator of the motor with a simpler structure. The cost can be reduced at the same time.
  • the hermetic compressor according to claim 4 since the discharge pipe is provided at a position symmetrical to the wiring of the electric motor with the rotating shaft interposed therebetween, the refrigerant can be smoothly and efficiently sealed with less interference with the wiring of the electric motor. It can be discharged outside.
  • FIG. 1 is a longitudinal sectional view of a hermetic compressor according to the present invention.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG.
  • Hermetic compressor 2 Housing (sealed container) 3 Body 6 Motor 8 Stator 12 Rotating Shaft 14 Spindle Frame 30 Scroll Unit 32 Fixed Scroll 52 Movable Scroll 60 Discharge Chamber 72 Discharge Pipe 90 Discharge Channel 96 Oil Separator Plate 98 Discharge Hole 100 Wiring
  • FIG. 1 shows a longitudinal section of a hermetic compressor according to the present invention.
  • the compressor 1 is a scroll type compressor and is incorporated in a refrigeration circuit such as a refrigeration apparatus or a heat pump type oil feeder.
  • the circuit includes a path through which a carbon dioxide refrigerant (hereinafter referred to as a refrigerant), which is an example of a working fluid, circulates.
  • the compressor 1 sucks the refrigerant from the path, compresses the refrigerant, and supplies the refrigerant toward the path.
  • the compressor 1 includes a housing (sealed container) 2, and the body 3 of the housing 2 is airtightly fitted on the upper and lower sides by an upper lid 4 and a lower lid 5, respectively.
  • An electric motor (electric motor, hereinafter referred to as a motor) 6 is accommodated in the body 3, and a rotating shaft 12 is disposed in the motor 6.
  • a rotor 7 having a permanent magnet is fixed to the outer peripheral side of the rotating shaft 12, and a stator 8 having an armature winding 9 is disposed on the outer peripheral side of the rotor 7.
  • the stator 8 is fixed by press-fitting a part of the outer peripheral side to the body portion 3.
  • the upper end side of the rotary shaft 12 is rotatably supported by the spindle frame 14 via a bearing 16.
  • the spindle frame 14 is joined and fixed to the body 3 by welding or the like.
  • a shielding member 80 is provided on the upper portion of the motor 6 so as to be fitted on the spindle frame 14 and extend radially to the outer peripheral portion of the stator 8.
  • the shielding member 80 the region of the rotor 7 and the stator 8 and the region of the outer periphery of the stator 8 are partitioned.
  • the lower end side of the rotating shaft 12 is rotatably supported by the countershaft frame 18 via the bearing 20.
  • An oil pump 22 is attached to the lower end side of the rotary shaft 12, and the pump 22 sucks lubricating oil in an oil storage chamber 23 formed inside the lower lid 5.
  • the lubricating oil is supplied to the motor 6 and the scroll unit (compression unit) 30 from the upper end of the rotating shaft 12 through an oil passage 24 formed in the rotating shaft 12 along the axial direction. It functions as a lubricant for bearings and a seal for sliding surfaces.
  • an inlet 19 for lubricating oil is formed at an appropriate position of the frame 18, and the lubricating oil supplied to each sliding portion in the compressor 1 is stored in the oil storage chamber via the inlet 19 as will be described later. 23 is stored.
  • the scroll unit 30 is disposed above the motor 6 in the body 3, and performs a series of processes of refrigerant suction, compression, and discharge.
  • the scroll unit 30 includes a movable scroll 52 and a fixed scroll 32, and the movable scroll 52 includes an end plate 54.
  • the end plate 54 has a spiral wrap extending toward the end plate 34 of the fixed scroll 32. It is integrally formed. These spiral wraps cooperate with each other to form a compression chamber, and this compression chamber moves from the radially outer peripheral side of the spiral wrap toward the center by the revolving motion of the movable scroll 52 with respect to the fixed scroll 32. In doing so, the volume is reduced and the refrigerant is compressed.
  • a boss 66 is formed on the lower surface side of the end plate 54, and this boss 66 is rotatably supported by the eccentric shaft 26 via the bearing 28.
  • the eccentric shaft 26 is integrally formed on the upper end side of the rotary shaft 12.
  • the rotation of the movable scroll 52 is blocked by a rotation blocking pin 68.
  • the fixed scroll 32 is fixed to the spindle frame 14, and the end plate 34 partitions the compression chamber side and the discharge chamber 60 side. Further, a discharge hole 36 communicating with the compression chamber side is formed through the end plate 34 at an appropriate position in the central portion of the fixed scroll 32. As shown in FIG.
  • the discharge flow path 90 is provided so as to guide the refrigerant containing lubricating oil from the discharge chamber 60 to the upper portion of the stator 8.
  • the discharge flow path 90 is composed of a hole path 92 formed in the scroll unit 30 and the spindle frame 14 and a pipe 94 communicating with the path 92, and the pipe 94 penetrates the shielding member 80. The refrigerant containing the lubricating oil is directly guided to the upper part of the stator 8.
  • An oil separation plate 96 that separates the lubricating oil from the refrigerant guided by the discharge flow path 90 is provided at the top of the stator 8.
  • the refrigerant containing the lubricating oil that has reached the discharge chamber 60 from the compression chamber is separated into the refrigerant and the lubricating oil through the discharge passage 90 and the oil separation plate 96 and the stator 8.
  • FIG. 2 a cross section taken along the line AA of FIG. 1 is shown, and a top view of the oil separation plate 96 is shown.
  • the oil separation plate 96 is provided with a plurality of constricted holes 98 concentrically as viewed from the upper surface thereof, and the refrigerant containing lubricating oil passes through these constricted holes 98 to form a compressed refrigerant. Separated into lubricating oil. Specifically, the refrigerant and the lubricating oil flow down not only in the oil separation plate 96 but also in the stator 8 including the armature winding 9, so that the lubricating oil adheres to the armature winding 9 and the refrigerant is surely cooled. And lubricating oil.
  • the body 3 is provided with a discharge pipe 72 positioned below the spindle frame 14, and the refrigerant separated from the lubricating oil is discharged outside the housing 2, that is, outside the compressor 1 through the discharge pipe 72. .
  • wiring 100 for operating the motor 6 is actually arranged along the inner surface of the side wall of the body portion 3, and the discharge pipe 72 sandwiches the rotating shaft 12.
  • the wiring 100 is provided at a symmetrical position.
  • the movable scroll 52 performs a turning motion without rotating as the rotary shaft 12 rotates. This orbiting movement of the movable scroll 52 causes the refrigerant to be sucked from the outer peripheral side of the scroll unit 30 toward the inside through the suction pipe 70.
  • the high-pressure compressed refrigerant containing the mist-like lubricating oil by stirring reaches the discharge chamber 60 through the discharge hole 36, circulates in the housing 2 through the discharge flow path 90, It is discharged out of the compressor 1 through a discharge pipe 72 provided in the body 3.
  • the high-pressure compressed refrigerant containing the lubricating oil is reliably separated from the lubricating oil by the oil separation plate 96 and the stator 8, and only the refrigerant is discharged out of the compressor 1 through the discharge pipe 72 and separated.
  • Lubricating oil drops and is stored in the oil storage chamber 23 through the inlet 19 provided in the lower part of the housing 2.
  • the lubricant supplied to the scroll unit 30 and the bearings 16, 28, etc. is changed in the direction of the substantially right angle by the oil discharge passage 84, and is a compressed refrigerant containing the lubricant passing through the discharge passage 90.
  • the air flows down in the stator 8 and is led to the oil storage chamber 23 through the introduction port 19 and stored.
  • the discharge flow path 90 is provided so as to guide the refrigerant and the lubricating oil directly to the upper portion of the stator 8 of the motor 6, and the discharge pipe 72 is connected to the spindle frame 14. It is arranged at the lower part 3 so as to be located below.
  • the hermetic compressor according to the present invention by providing the discharge pipe 72 in the body portion 3, there is no need to provide the discharge head disposed on the top of the scroll unit 30 as in the prior art, and the housing The structure of the upper part of 2 can be simplified and the cost can be reduced. Then, the refrigerant containing the lubricating oil is directly guided to the stator 8 through the discharge passage 90, and not only the oil separation plate 96 but also the stator 8 including the armature winding 9 is passed. Thus, the refrigerant and the lubricating oil can be separated, and only the refrigerant can be discharged out of the compressor 1 satisfactorily.
  • the discharge flow path 90 is constituted by a hole path 92 formed in the scroll unit 30 and the spindle frame 14 and a pipe (for example, a copper pipe) 94 communicating with the path 92. Therefore, the refrigerant and the lubricating oil can be reliably guided to the stator 8 of the motor 6 with a simple structure using the pipe 94, and the structure is further simplified by passing through the hole path 92, thereby reducing the cost. Can be planned. Further, since the discharge pipe 72 is provided at a position symmetrical to the wiring 100 with the rotating shaft 12 interposed therebetween, the refrigerant separated from the lubricating oil can be smoothly and efficiently removed from the compressor 1 with less interference with the wiring 96 of the motor 6. Can be discharged.
  • the discharge flow path 90 is configured by the hole 92 formed in the scroll unit 30 and the spindle frame 14 and the pipe 94 communicating with the path 92.
  • the flow path 90 may be constituted by only the pipe 94. That is, the pipe 94 is disposed inside the scroll unit 30 and the spindle frame 14 or between the scroll unit 30 and the spindle frame 14 and the side wall surface of the trunk portion 3, and the discharge chamber 60, the rotor 7, and the stator 8 are constituted by the pipe 94 alone. These areas may be communicated with each other.
  • the discharge flow path 90 is constituted only by the hole path 92 passing through the inside of the spindle frame 14, and the discharge chamber 60 and the rotor 7 and stator 8 areas are communicated only by the hole path 92. It may be.
  • the hermetic compressor is configured as the scroll compressor using the scroll unit 30 as the compressor 1.
  • the compressor 1 may perform a series of refrigerant suction, compression, and discharge processes.
  • the present invention is not limited to the scroll compressor, but can be applied to other types of hermetic compressors.
  • hermetic compressor capable of efficiently separating the refrigerant from the lubricating oil and efficiently discharging it out of the hermetic container while simplifying the structure, such as air conditioning, freezing, refrigeration, hot water supply, etc. Widely available as a compressor for

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
  • Rotary Pumps (AREA)

Abstract

L'invention concerne un compresseur hermétique à structure simplifiée et capable de séparer correctement un réfrigérant d'une huile lubrifiante, et d'évacuer efficacement le réfrigérant à l'extérieur d'un contenant hermétique. Un passage d'évacuation (90) est prévu soit dans une unité en spirale (30) et une enveloppe d'arbre principal (14) soit entre la surface de paroi interne d'un tambour (3) de contenant hermétique (2) et l'unité en spirale et l'enveloppe d'arbre principal, de manière à conduire le réfrigérant et l'huile lubrifiante directement vers un stator (8) de moteur électrique (6). Une plaque de séparation d'huile (96) pour séparer ladite huile du réfrigérant conduit depuis un passage d'évacuation est prévue au sommet du stator, et une conduite d'évacuation (72) pour l'évacuation du réfrigérant dont l'huile lubrifiante a été séparée, vers l'extérieur du contenant hermétique, est prévue dans le tambour se trouvant sous l'enveloppe d'arbre principal.
PCT/JP2009/065784 2008-09-09 2009-09-03 Compresseur hermétique WO2010029956A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09813102A EP2327882A4 (fr) 2008-09-09 2009-09-03 Compresseur hermétique
AU2009292496A AU2009292496B2 (en) 2008-09-09 2009-09-03 Hermetic compressor
US13/063,164 US20110165000A1 (en) 2008-09-09 2009-09-03 Hermetic Compressor
CN2009801350029A CN102144097A (zh) 2008-09-09 2009-09-03 密闭型压缩机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-230907 2008-09-09
JP2008230907A JP2010065556A (ja) 2008-09-09 2008-09-09 密閉型圧縮機

Publications (2)

Publication Number Publication Date
WO2010029956A2 true WO2010029956A2 (fr) 2010-03-18
WO2010029956A3 WO2010029956A3 (fr) 2010-05-14

Family

ID=42005590

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/065784 WO2010029956A2 (fr) 2008-09-09 2009-09-03 Compresseur hermétique

Country Status (6)

Country Link
US (1) US20110165000A1 (fr)
EP (1) EP2327882A4 (fr)
JP (1) JP2010065556A (fr)
CN (1) CN102144097A (fr)
AU (1) AU2009292496B2 (fr)
WO (1) WO2010029956A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6748874B2 (ja) * 2017-01-27 2020-09-02 パナソニックＩｐマネジメント株式会社 密閉型圧縮機
CN111373152B (zh) * 2017-08-08 2021-01-15 日立江森自控空调有限公司 旋转压缩机及其组装方法
KR102124490B1 (ko) * 2018-10-30 2020-06-19 엘지전자 주식회사 압축기
CN111441951A (zh) * 2019-01-17 2020-07-24 艾默生环境优化技术(苏州)有限公司 压缩机

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JPH09287579A (ja) 1996-04-22 1997-11-04 Hitachi Ltd 密閉形スクロール圧縮機
JP2004316500A (ja) 2003-04-15 2004-11-11 Fujitsu General Ltd 密閉形圧縮機
JP2006132419A (ja) 2004-11-05 2006-05-25 Fujitsu General Ltd 圧縮機

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JPH09287579A (ja) 1996-04-22 1997-11-04 Hitachi Ltd 密閉形スクロール圧縮機
JP2004316500A (ja) 2003-04-15 2004-11-11 Fujitsu General Ltd 密閉形圧縮機
JP2006132419A (ja) 2004-11-05 2006-05-25 Fujitsu General Ltd 圧縮機

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Title
See also references of EP2327882A4

Also Published As

Publication number Publication date
EP2327882A2 (fr) 2011-06-01
JP2010065556A (ja) 2010-03-25
CN102144097A (zh) 2011-08-03
AU2009292496A1 (en) 2010-03-18
EP2327882A4 (fr) 2012-07-18
WO2010029956A3 (fr) 2010-05-14
US20110165000A1 (en) 2011-07-07
AU2009292496B2 (en) 2012-08-02

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