WO2008001639A1 - Compressor - Google Patents

Compressor Download PDF

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Publication number
WO2008001639A1
WO2008001639A1 PCT/JP2007/062241 JP2007062241W WO2008001639A1 WO 2008001639 A1 WO2008001639 A1 WO 2008001639A1 JP 2007062241 W JP2007062241 W JP 2007062241W WO 2008001639 A1 WO2008001639 A1 WO 2008001639A1
Authority
WO
WIPO (PCT)
Prior art keywords
scroll member
orbiting scroll
oil supply
orbiting
pressure part
Prior art date
Application number
PCT/JP2007/062241
Other languages
French (fr)
Japanese (ja)
Inventor
Akiyoshi Higashiyama
Original Assignee
Sanden Corporation
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 Sanden Corporation filed Critical Sanden Corporation
Priority to EP07767139.4A priority Critical patent/EP2034187B1/en
Publication of WO2008001639A1 publication Critical patent/WO2008001639A1/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations 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
    • F04C23/008Hermetic pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02Rotary-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
    • F04C18/0207Rotary-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
    • F04C18/0246Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0253Details concerning the base
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02Lubrication; Lubricant separation
    • F04C29/028Means for improving or restricting lubricant flow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00Fluid
    • F04C2210/26Refrigerants with particular properties, e.g. HFC-134a
    • F04C2210/261Carbon dioxide (CO2)

Definitions

  • the present invention relates to a compressor used in an air conditioner, a cooling device, a hot water supply device, or the like that constitutes a refrigeration cycle or a heat pump cycle.
  • a fixed scroll member fixed to a housing and provided with a spiral body on one end surface of the end plate, and provided to face the fixed scroll member, the fixed scroll of the end plate is provided.
  • An orbiting scroll member provided with a spiral body on the member side, a drive shaft for orbiting the orbiting scroll member on a predetermined circular path, and provided on the opposite surface side of the orbiting scroll member spiral body to rotate the drive shaft
  • a bearing frame that is freely supported, and a back pressure chamber provided between the orbiting scroll member and the bearing frame is divided into a high-pressure portion located in the radial center and a low-pressure portion located radially outside.
  • An annular partition member and an orbiting scroll member are provided on the orbiting scroll member, and the high pressure portion and the low pressure portion are communicated at a predetermined orbiting position of the orbiting scroll member.
  • Which oil with an oil supply passage can flow to the low pressure portion is known (for example, see Patent Document 1).
  • Patent Document 1 Japanese Patent Laid-Open No. 2006-37896
  • an oil supply channel is formed inside the end plate of the orbiting scroll member by making a hole in a straight line from the outside of the orbiting scroll member with a tool such as a drill. is doing. Further, when forming an oil supply passage having a bend in the orbiting scroll member, a plurality of linear holes are formed from the outside of the orbiting scroll member, and the respective holes are connected to form an oil supply passage. . For this reason, in order to form the oil supply flow path, an operation of drilling holes or an operation of filling unused holes occurs, which may increase the number of processing steps and increase the manufacturing cost.
  • An object of the present invention is to provide a simple structure for lubricating oil supplied to a high pressure portion of a back pressure chamber. It is providing the compressor which can be distribute
  • the present invention is provided with a fixed scroll member fixed to a housing and provided with a spiral body on one end surface of the end plate, and provided to face the fixed scroll member.
  • a orbiting scroll member provided with a spiral body on the scroll member side, a drive shaft for orbiting the orbiting scroll member on a predetermined circular path, and provided on the opposite side of the spiral body of the orbiting scroll member;
  • the back pressure chamber between the orbiting scroll member and the bearing frame is located on the high-pressure part located on the radial center side and on the radial outer peripheral side.
  • An annular partition member for partitioning with the low-pressure portion positioned, and the high-pressure portion and the low-pressure portion at a predetermined orbiting position of the orbiting scroll member on the opposite side of the spiral body of the orbiting scroll member And oil groove is provided for communicating, Ru.
  • the high pressure portion and the low pressure portion of the back pressure chamber can be communicated with each other at a predetermined orbiting position of the orbiting scroll member.
  • the manufacturing cost it is possible to reduce the manufacturing cost.
  • FIG. 1 is a cross-sectional view of a compressor showing an embodiment of the present invention.
  • FIG. 2 is a diagram showing a positional relationship between a turning scroll member and a partition member.
  • FIG. 3 is a cross-sectional view of a main part of the compressor showing a state where a high pressure portion and a low pressure portion are communicated with each other by an oil supply groove.
  • This compressor is provided in a vertically long housing 10, an upper part in the housing 10, a compression part 20 for compressing the sucked refrigerant, and a lower part of the compression part 20 in the housing 10.
  • the hermetic compressor includes an electric motor 30 for driving the compression unit 20.
  • carbon dioxide that becomes supercritical when compressed is used as a refrigerant.
  • the housing 10 includes a housing body 11 that also serves as a cylindrical member arranged with a central axis directed in the vertical direction, and a pair of hemispheres that close the upper end opening and the lower end opening of the housing body 11.
  • Cap 12 A refrigerant discharge pipe 13 for discharging the refrigerant compressed in the compression unit 20 is connected to the cap 12 that closes the upper end opening of the housing body 10.
  • a refrigerant suction pipe 14 for sucking a refrigerant is connected to the peripheral surface of the housing body 11 where the compression unit 20 is located.
  • the compression unit 20 is provided on the upper side of the housing body 11 so as to partition the interior of the housing 10 up and down, and is provided below the fixed scroll member 21 so as to be fixed to the fixed scroll member 21. And a turning scroll member 22 that can turn without rotating.
  • the fixed scroll member 21 is also a disk-shaped member disposed with its central axis facing up and down, and a spiral body is provided on the lower surface side.
  • a refrigerant discharge hole 21a for discharging a compressed refrigerant is provided in the central portion of the fixed scroll member 21 in the radial direction.
  • the fixed scroll member 21 is formed with a communication passage 21b that communicates the inside of the spiral body of the fixed scroll member 21 with a low pressure portion of a back pressure chamber described later, and a back pressure adjusting valve 21c is provided in the communication passage 21b. It is provided.
  • the orbiting scroll member 22 is formed of a disk-like member provided so as to face the fixed scroll member 21, and a spiral body is provided on the upper surface side.
  • the upper end of the drive shaft 23 is connected to the lower surface side of the orbiting scroll member 22.
  • an oil supply groove 22a extending radially inward is provided on the lower surface side of the orbiting scroll member 22, A high pressure portion and a low pressure portion of a back pressure chamber, which will be described later, communicate with each other at a predetermined turning position of the member 22.
  • the drive shaft 23 is disposed with the central axis serving as the rotation center facing up and down, and the connecting portion 23a with the turning scroll member is provided so that the rotation center force of the drive shaft 23 is also eccentric.
  • the drive shaft 23 is rotatably supported by an upper frame 24 as a bearing frame provided so that the upper end side partitions the inside of the housing 10 up and down, and a lower frame provided so that the lower side partitions the inside of the housing 10 up and down. It is rotatably supported by 25.
  • the drive shaft 23 is rotated by using the electric motor 30 as power.
  • the rotation of the drive shaft 23 causes the orbiting scroll member 22 to rotate on a predetermined circular orbit.
  • the drive shaft 23 is provided with a lubricating oil flow passage 23b along the central axis, and the lubricating oil sucked by the oil pump 26 connected to the lower end side flows through the lubricating oil flow passage 23b. .
  • the upper frame 24 is provided such that the radially outer side on the upper surface side extends upward in the circumferential direction, and is connected to the lower surface of the fixed scroll member 21.
  • the orbiting scroll member 22 is housed in the space between the upper frame 24 and the fixed scroll member 21.
  • a back pressure chamber provided in a space between the lower surface of the orbiting scroll member 22 and the upper surface of the upper frame 24 is provided with a high pressure portion 24a positioned on the inner peripheral side and an outer peripheral portion.
  • a partition member 24c is provided for partitioning into a low-pressure part 24b located on the side.
  • the partition member 24c is made of a synthetic resin member or the like formed in an annular shape, and the lower surface of the turning scroll member 22 slides on the upper surface.
  • the oil supply groove 22a provided on the lower surface of the orbiting scroll member 22 is provided so as to be positioned on the high pressure portion 24a side with respect to the partition member 24c, and the orbiting scroll when the high pressure portion 24a and the low pressure portion 24b communicate with each other.
  • the end of the oil supply groove 22a is positioned on the low pressure part 24b side.
  • the space above the fixed scroll member 21 in the housing 10 is partitioned by a partition member 15 into a space 15a on the refrigerant discharge hole 21a side of the fixed scroll member 21 and a space 15b on the refrigerant discharge pipe 13 side. .
  • the space 15a on the refrigerant discharge hole 21a side is separated from the upper frame 24 and the lower frame 2 by the communication path 16 provided in the fixed scroll member 21 and the upper frame 24. It communicates with the space 17 between 5.
  • the space 17 is communicated with a space 15b on the refrigerant discharge pipe 13 side by a communication path 18 provided in the fixed scroll member 21 and the upper frame 24.
  • lubricating oil for lubricating each sliding portion in the housing 10 is stored, and the stored lubricating oil is stored in the space 19.
  • the oil pump 26 circulates the lubricating oil flow passage 23b of the drive shaft 23.
  • the electric motor 30 includes a rotor 31 provided in the space 17 and also having a permanent magnet force fixed to the drive shaft 23, and a stator 32 provided so as to surround the rotor 31 and fixed to the housing body 11. is doing.
  • the stator 32 includes a stator core 32a provided by laminating a plurality of electromagnetic steel plates in the direction of the central axis of the housing body 11, and a coil 32b wound around the stator core 32a.
  • the refrigerant that also flows into the housing 10 as well as the refrigerant suction pipe 14 flows into the compression unit 20 and is compressed between the spiral bodies of the fixed scroll member 21 and the orbiting scroll member 22 to discharge the refrigerant. It is discharged from the hole 21a into the space 15a.
  • the refrigerant discharged into the space 15a flows through the communication path 16 and flows into the space 17, cools the electric motor 30, flows through the communication path 18, flows into the space 15b, and flows out of the housing 10 from the refrigerant discharge pipe 13. leak.
  • the space 17 communicates with the back pressure chamber through a gap between the upper frame 24 and the drive shaft 23, the orbiting scroll member 22 is moved upward by the pressure of the space 17. The pushing force acts on.
  • the lubricating oil stored in the space 19 below the lower frame 25 is sucked by the oil pump 26 and flows through the lubricating oil flow passage 23b of the drive shaft 23.
  • the oil slides out and lubricates each sliding part.
  • the lubricating oil that has flowed into the high pressure portion 24a of the back pressure chamber passes through the oil supply groove 22a at a predetermined orbiting position of the orbiting scroll member 22 that orbits on a predetermined circular path.
  • the rotating scroll mechanism 22 is lubricated (not shown).
  • the lubricating oil flowing into the low pressure part 24b opens the back pressure regulating valve 21c and flows through the communication passage 21b, and the fixed scroll member 21 and the orbiting scroll member 22 And the sliding portion between the fixed scroll member 21 and the orbiting scroll member 22 is lubricated.
  • the high pressure portion 24a and the outer peripheral portion are located in the inner peripheral portion of the back pressure chamber provided in the space between the orbiting scroll member 22 and the upper frame 24.
  • An annular partition member 24c that partitions into a low-pressure part 24b positioned at a lower part of the orbiting scroll member 22 is connected to the lower surface of the orbiting scroll member 22 by connecting the high-pressure part 24a and the low-pressure part 24b at a predetermined orbiting position.
  • An oil supply groove 22a is provided to allow the lubricating oil supplied to the high pressure section 24a to flow to the low pressure section 24b.
  • the oil supply groove 22a is provided so as to be positioned on the high pressure portion 24a side, and the end portion of the orbiting scroll member 22 has a low pressure only when the high pressure portion 24a and the low pressure portion 24b communicate with each other. It is located on the part 24b side. As a result, the pressure can always be applied to the oil supply groove 22a by applying downward force upward, so that the partition member 24c is not damaged by the members around the oil supply groove 22a.
  • the oil supply groove 22a is provided so as to extend in the radial direction of the orbiting scroll member 22.
  • the high pressure portion 24a and the low pressure portion 24b can be communicated with each other with a minimum amount of processing of the orbiting scroll member 22, so that the manufacturing cost can be reduced.

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

Abstract

A compressor where lubricating oil supplied to a high-pressure section in a back pressure chamber is allowed to flow to a low-pressure section by using a simple structure. The compressor has an annular partition member for partitioning the back pressure chamber, provided between an orbiting scroll member and a bearing frame, into a high-pressure section located on the inner peripheral side of the back pressure chamber and a low-pressure section located on the outer peripheral side. An oil supply groove is formed in that surface of the orbiting scroll member that is on the opposite side of the spiral body, and the oil groove interconnects, at a predetermined position of orbiting of the orbiting scroll member, the high-pressure section and the low-pressure section. As a result, the lubricating oil supplied to the high-pressure section flows into the low-pressure section via the oil supply groove at the predetermined position of orbiting of the orbiting scroll member.

Description

明 細 書  Specification
圧縮機  Compressor
技術分野  Technical field
[0001] 本発明は、冷凍サイクルまたはヒートポンプサイクルが構成される空気調和装置、 冷却装置、給湯装置等に用いられる圧縮機に関するものである。  TECHNICAL FIELD [0001] The present invention relates to a compressor used in an air conditioner, a cooling device, a hot water supply device, or the like that constitutes a refrigeration cycle or a heat pump cycle.
背景技術  Background art
[0002] 従来、この種の圧縮機としては、ハウジングに固定され、鏡板の一端面に渦巻体が 設けられた固定スクロール部材と、固定スクロール部材と対向するように設けられ、鏡 板の固定スクロール部材側に渦巻体が設けられた旋回スクロール部材と、旋回スクロ 一ル部材を所定の円軌道上を旋回させる駆動シャフトと、旋回スクロール部材の渦巻 体の反対面側に設けられ、駆動シャフトを回転自在に支持する軸受フレームと、軸受 フレームに設けられ、旋回スクロール部材と軸受フレームとの間の背圧室を径方向中 央部に位置する高圧部と径方向外側に位置する低圧部とに仕切る環状の仕切部材 と、旋回スクロール部材に設けられ、旋回スクロール部材の所定の旋回位置で高圧 部と低圧部とを連通することにより、高圧部に供給された潤滑油を低圧部に流通可能 な給油流路を備えたものが知られている (例えば、特許文献 1参照)。  Conventionally, as this type of compressor, a fixed scroll member fixed to a housing and provided with a spiral body on one end surface of the end plate, and provided to face the fixed scroll member, the fixed scroll of the end plate is provided. An orbiting scroll member provided with a spiral body on the member side, a drive shaft for orbiting the orbiting scroll member on a predetermined circular path, and provided on the opposite surface side of the orbiting scroll member spiral body to rotate the drive shaft A bearing frame that is freely supported, and a back pressure chamber provided between the orbiting scroll member and the bearing frame is divided into a high-pressure portion located in the radial center and a low-pressure portion located radially outside. An annular partition member and an orbiting scroll member are provided on the orbiting scroll member, and the high pressure portion and the low pressure portion are communicated at a predetermined orbiting position of the orbiting scroll member. Which oil with an oil supply passage can flow to the low pressure portion is known (for example, see Patent Document 1).
特許文献 1:特開 2006 - 37896号公報  Patent Document 1: Japanese Patent Laid-Open No. 2006-37896
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0003] 従来の圧縮機では、給油流路を形成するために、旋回スクロール部材の外側から ドリル等の工具によって直線状に孔をあけることにより旋回スクロール部材の鏡板の 内部に給油流路を形成している。また、旋回スクロール部材に曲りを有する給油流路 を形成する場合には、直線状の孔を旋回スクロール部材の外側から複数開け、それ ぞれの孔を連通させて給油流路を形成している。このため、給油流路を形成するに は、孔をあける作業や使用しない孔を埋める作業が発生し、加工工数が多くなり製造 コストが高くなるおそれがある。 [0003] In a conventional compressor, in order to form an oil supply channel, an oil supply channel is formed inside the end plate of the orbiting scroll member by making a hole in a straight line from the outside of the orbiting scroll member with a tool such as a drill. is doing. Further, when forming an oil supply passage having a bend in the orbiting scroll member, a plurality of linear holes are formed from the outside of the orbiting scroll member, and the respective holes are connected to form an oil supply passage. . For this reason, in order to form the oil supply flow path, an operation of drilling holes or an operation of filling unused holes occurs, which may increase the number of processing steps and increase the manufacturing cost.
[0004] 本発明の目的とするところは、背圧室の高圧部に供給された潤滑油を簡単な構造 によって低圧部に流通させることのできる圧縮機を提供することにある。 課題を解決するための手段 An object of the present invention is to provide a simple structure for lubricating oil supplied to a high pressure portion of a back pressure chamber. It is providing the compressor which can be distribute | circulated to a low voltage | pressure part. Means for solving the problem
[0005] 本発明は前記目的を達成するために、ハウジングに固定され、鏡板の一端面に渦 卷体が設けられた固定スクロール部材と、固定スクロール部材と対向するように設け られ、鏡板の固定スクロール部材側に渦巻体が設けられた旋回スクロール部材と、旋 回スクロール部材を所定の円軌道上を旋回させるための駆動シャフトと、旋回スクロ 一ル部材の渦巻体の反対面側に設けられ、駆動シャフトを回転自在に支持するため の軸受フレームと軸受フレームに設けられ、旋回スクロール部材と軸受フレームとの 間の背圧室を径方向中央部側に位置する高圧部と径方向外周部側に位置する低 圧部とに仕切るための環状の仕切部材とを備え、旋回スクロール部材の渦巻体の反 対面側には、旋回スクロール部材の所定の旋回位置で高圧部と低圧部とを連通する ための給油溝が設けられて 、る。  [0005] In order to achieve the above object, the present invention is provided with a fixed scroll member fixed to a housing and provided with a spiral body on one end surface of the end plate, and provided to face the fixed scroll member. A orbiting scroll member provided with a spiral body on the scroll member side, a drive shaft for orbiting the orbiting scroll member on a predetermined circular path, and provided on the opposite side of the spiral body of the orbiting scroll member; Provided on the bearing frame and the bearing frame for rotatably supporting the drive shaft, the back pressure chamber between the orbiting scroll member and the bearing frame is located on the high-pressure part located on the radial center side and on the radial outer peripheral side. An annular partition member for partitioning with the low-pressure portion positioned, and the high-pressure portion and the low-pressure portion at a predetermined orbiting position of the orbiting scroll member on the opposite side of the spiral body of the orbiting scroll member And oil groove is provided for communicating, Ru.
[0006] これにより、旋回スクロール部材に給油溝を形成するという簡単な加工によって旋 回スクロール部材の所定の旋回位置で背圧室の高圧部と低圧部とが連通される。 発明の効果 [0006] Thereby, the high pressure portion and the low pressure portion of the back pressure chamber are communicated with each other at a predetermined turning position of the orbiting scroll member by a simple process of forming an oil supply groove in the orbiting scroll member. The invention's effect
[0007] 本発明によれば、旋回スクロール部材に簡単な力卩ェを施すことにより、旋回スクロー ル部材の所定の旋回位置で背圧室の高圧部と低圧部とを連通することができるので 、製造コストの低減を図ることが可能となる。  [0007] According to the present invention, by applying a simple force to the orbiting scroll member, the high pressure portion and the low pressure portion of the back pressure chamber can be communicated with each other at a predetermined orbiting position of the orbiting scroll member. Thus, it is possible to reduce the manufacturing cost.
[0008] 本発明の前記目的とそれ以外の目的と、特徴と、利益は、以下の説明と添付図面 によって明らかになる。  [0008] The above and other objects, features, and benefits of the present invention will become apparent from the following description and the accompanying drawings.
図面の簡単な説明  Brief Description of Drawings
[0009] [図 1]本発明の一実施形態を示す圧縮機の断面図である。 FIG. 1 is a cross-sectional view of a compressor showing an embodiment of the present invention.
[図 2]旋回スクロール部材と仕切部材との位置関係を示す図である。  FIG. 2 is a diagram showing a positional relationship between a turning scroll member and a partition member.
[図 3]給油溝によって高圧部と低圧部を連通した状態を示す圧縮機の要部断面図で ある。  FIG. 3 is a cross-sectional view of a main part of the compressor showing a state where a high pressure portion and a low pressure portion are communicated with each other by an oil supply groove.
符号の説明  Explanation of symbols
[0010] 10· ··ノヽウジング、 20· ··圧縮部、 21· ··固定スクロール部材、 22· ··旋回スクロール部 材、 22a…給油溝、 23· · ·駆動シャフト、 24· · ·上部フレーム、 24a…高圧部、 24b…低 圧部、 24c…仕切部材。 [0010] 10 ··· Nosing, 20 ··· Compression portion, 21 ··· Fixed scroll member, 22 ··· Orbiting scroll portion 22a ... oil supply groove 23 ... drive shaft 24 ... upper frame 24a ... high pressure part 24b ... low pressure part 24c ... partitioning member.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0011] この圧縮機は、縦長形状のハウジング 10と、ハウジング 10内の上部に設けられ、吸 入した冷媒を圧縮するための圧縮部 20と、ハウジング 10内の圧縮部 20の下方に設 けられ、圧縮部 20を駆動させるための電動機 30とを備えた密閉型圧縮機である。ま た、この圧縮機は、圧縮されることにより超臨界状態となる二酸ィ匕炭素が冷媒として 用いられる。 [0011] This compressor is provided in a vertically long housing 10, an upper part in the housing 10, a compression part 20 for compressing the sucked refrigerant, and a lower part of the compression part 20 in the housing 10. The hermetic compressor includes an electric motor 30 for driving the compression unit 20. In addition, in this compressor, carbon dioxide that becomes supercritical when compressed is used as a refrigerant.
[0012] ハウジング 10は、中心軸を上下方向に向けて配置した円筒状の部材カもなるハウ ジング本体 11と、ハウジング本体 11の上端開口及び下端開口を閉鎖する半球形状 に形成された一対のキャップ 12とからなる。ハウジング本体 10の上端開口を閉鎖す るキャップ 12には、圧縮部 20において圧縮した冷媒を吐出するための冷媒吐出管 1 3が接続されている。また、圧縮部 20の位置するハウジング本体 11の周面には、冷 媒を吸入するための冷媒吸入管 14が接続されている。  The housing 10 includes a housing body 11 that also serves as a cylindrical member arranged with a central axis directed in the vertical direction, and a pair of hemispheres that close the upper end opening and the lower end opening of the housing body 11. Cap 12 A refrigerant discharge pipe 13 for discharging the refrigerant compressed in the compression unit 20 is connected to the cap 12 that closes the upper end opening of the housing body 10. In addition, a refrigerant suction pipe 14 for sucking a refrigerant is connected to the peripheral surface of the housing body 11 where the compression unit 20 is located.
[0013] 圧縮部 20は、ハウジング本体 11の上部側にハウジング 10内を上下に仕切るように 固定された固定スクロール部材 21と、固定スクロール部材 21の下方に設けられ、固 定スクロール部材 21に対して自転することなく旋回可能な旋回スクロール部材 22と からなる。  [0013] The compression unit 20 is provided on the upper side of the housing body 11 so as to partition the interior of the housing 10 up and down, and is provided below the fixed scroll member 21 so as to be fixed to the fixed scroll member 21. And a turning scroll member 22 that can turn without rotating.
[0014] 固定スクロール部材 21は、中心軸を上下に向けて配置された円板状の部材カもな り、下面側に渦巻体が設けられている。固定スクロール部材 21の径方向中央部には 、圧縮した冷媒を吐出するための冷媒吐出孔 21aが設けられている。また、固定スク ロール部材 21には、固定スクロール部材 21の渦巻体の内側と後述する背圧室の低 圧部とを連通する連通路 21bが形成され、連通路 21bに背圧調整弁 21cが設けられ ている。  [0014] The fixed scroll member 21 is also a disk-shaped member disposed with its central axis facing up and down, and a spiral body is provided on the lower surface side. A refrigerant discharge hole 21a for discharging a compressed refrigerant is provided in the central portion of the fixed scroll member 21 in the radial direction. In addition, the fixed scroll member 21 is formed with a communication passage 21b that communicates the inside of the spiral body of the fixed scroll member 21 with a low pressure portion of a back pressure chamber described later, and a back pressure adjusting valve 21c is provided in the communication passage 21b. It is provided.
[0015] 旋回スクロール部材 22は、固定スクロール部材 21と対向するように設けられた円板 状の部材からなり、上面側に渦巻体が設けられている。旋回スクロール部材 22の下 面側には、駆動シャフト 23の上端が連結されている。また、旋回スクロール部材 22の 下面側には、径方向内側に径方向に延びる給油溝 22aが設けられ、旋回スクロール 部材 22の所定の旋回位置において後述する背圧室の高圧部と低圧部とを連通する ようになっている。 [0015] The orbiting scroll member 22 is formed of a disk-like member provided so as to face the fixed scroll member 21, and a spiral body is provided on the upper surface side. The upper end of the drive shaft 23 is connected to the lower surface side of the orbiting scroll member 22. In addition, an oil supply groove 22a extending radially inward is provided on the lower surface side of the orbiting scroll member 22, A high pressure portion and a low pressure portion of a back pressure chamber, which will be described later, communicate with each other at a predetermined turning position of the member 22.
[0016] 駆動シャフト 23は、回転中心となる中心軸を上下に向けて配置され、旋回スクロー ル部材との連結部 23aが駆動シャフト 23の回転中心力も偏心するように設けられて いる。駆動シャフト 23は、上端側がハウジング 10内を上下に仕切るように設けられた 軸受フレームとしての上部フレーム 24によって回転自在に支持され、下部側がハウ ジング 10内を上下に仕切るように設けられた下部フレーム 25によって回転自在に支 持されている。駆動シャフト 23は、電動機 30を動力として回転するようになっており、 駆動シャフト 23の回転によって旋回スクロール部材 22を所定の円軌道上を旋回させ るようになっている。また、駆動シャフト 23は、中心軸に沿って潤滑油流通路 23bが 設けられ、下端側に連結された油ポンプ 26によって吸引した潤滑油が潤滑油流通 路 23bを流通するようになって 、る。  [0016] The drive shaft 23 is disposed with the central axis serving as the rotation center facing up and down, and the connecting portion 23a with the turning scroll member is provided so that the rotation center force of the drive shaft 23 is also eccentric. The drive shaft 23 is rotatably supported by an upper frame 24 as a bearing frame provided so that the upper end side partitions the inside of the housing 10 up and down, and a lower frame provided so that the lower side partitions the inside of the housing 10 up and down. It is rotatably supported by 25. The drive shaft 23 is rotated by using the electric motor 30 as power. The rotation of the drive shaft 23 causes the orbiting scroll member 22 to rotate on a predetermined circular orbit. Further, the drive shaft 23 is provided with a lubricating oil flow passage 23b along the central axis, and the lubricating oil sucked by the oil pump 26 connected to the lower end side flows through the lubricating oil flow passage 23b. .
[0017] 上部フレーム 24は、上面側の径方向外側が周方向に亘つて上方に延びるように設 けられ、固定スクロール部材 21の下面に接続されている。旋回スクロール部材 22は 、上部フレーム 24と固定スクロール部材 21との間の空間に収容された状態となって いる。また、上部フレーム 24の上面には、旋回スクロール部材 22の下面と上部フレ ーム 24の上面との間の空間に設けられた背圧室を内周部側に位置する高圧部 24a と外周部側に位置する低圧部 24bとに仕切るための仕切部材 24cが設けられている 。仕切部材 24cは、環状に形成された合成樹脂等の部材からなり、上面を旋回スクロ 一ル部材 22の下面が摺動するようになって 、る。  The upper frame 24 is provided such that the radially outer side on the upper surface side extends upward in the circumferential direction, and is connected to the lower surface of the fixed scroll member 21. The orbiting scroll member 22 is housed in the space between the upper frame 24 and the fixed scroll member 21. Further, on the upper surface of the upper frame 24, a back pressure chamber provided in a space between the lower surface of the orbiting scroll member 22 and the upper surface of the upper frame 24 is provided with a high pressure portion 24a positioned on the inner peripheral side and an outer peripheral portion. A partition member 24c is provided for partitioning into a low-pressure part 24b located on the side. The partition member 24c is made of a synthetic resin member or the like formed in an annular shape, and the lower surface of the turning scroll member 22 slides on the upper surface.
[0018] 旋回スクロール部材 22の下面に設けられた給油溝 22aは、仕切部材 24cに対して 高圧部 24a側に位置するように設けられ、高圧部 24aと低圧部 24bを連通するときの 旋回スクロール部材 22の所定の旋回位置において給油溝 22aの端部が低圧部 24b 側に位置するようになって 、る。  [0018] The oil supply groove 22a provided on the lower surface of the orbiting scroll member 22 is provided so as to be positioned on the high pressure portion 24a side with respect to the partition member 24c, and the orbiting scroll when the high pressure portion 24a and the low pressure portion 24b communicate with each other. At the predetermined turning position of the member 22, the end of the oil supply groove 22a is positioned on the low pressure part 24b side.
[0019] ハウジング 10内の固定スクロール部材 21の上方の空間は、仕切部材 15によって 固定スクロール部材 21の冷媒吐出孔 21a側の空間 15aと冷媒吐出管 13側の空間 1 5bとに仕切られている。冷媒吐出孔 21a側の空間 15aは、固定スクロール部材 21及 び上部フレーム 24に設けられた連通路 16によって上部フレーム 24と下部フレーム 2 5との間の空間 17に連通されている。また、空間 17は、固定スクロール部材 21及び 上部フレーム 24に設けられた連通路 18によって冷媒吐出管 13側の空間 15bに連 通されている。更に、ハウジング 10内の下部フレーム 25の下方の空間 19には、ハウ ジング 10内の各摺動部を潤滑するための潤滑油が貯留されるようになっており、貯 留された潤滑油が油ポンプ 26によって駆動シャフト 23の潤滑油流通路 23bを流通 するようになっている。 The space above the fixed scroll member 21 in the housing 10 is partitioned by a partition member 15 into a space 15a on the refrigerant discharge hole 21a side of the fixed scroll member 21 and a space 15b on the refrigerant discharge pipe 13 side. . The space 15a on the refrigerant discharge hole 21a side is separated from the upper frame 24 and the lower frame 2 by the communication path 16 provided in the fixed scroll member 21 and the upper frame 24. It communicates with the space 17 between 5. The space 17 is communicated with a space 15b on the refrigerant discharge pipe 13 side by a communication path 18 provided in the fixed scroll member 21 and the upper frame 24. Further, in the space 19 below the lower frame 25 in the housing 10, lubricating oil for lubricating each sliding portion in the housing 10 is stored, and the stored lubricating oil is stored in the space 19. The oil pump 26 circulates the lubricating oil flow passage 23b of the drive shaft 23.
[0020] 電動機 30は、空間 17に設けられ、駆動シャフト 23に固定された永久磁石力もなる ロータ 31と、ロータ 31を囲むように設けられ、ハウジング本体 11に固定されたステー タ 32とを有している。ステータ 32は、複数の電磁鋼板をハウジング本体 11の中心軸 方向に積層することにより設けられたステータコア 32aと、ステータコア 32aに巻き付 けられたコイル 32bとを有して!/、る。  The electric motor 30 includes a rotor 31 provided in the space 17 and also having a permanent magnet force fixed to the drive shaft 23, and a stator 32 provided so as to surround the rotor 31 and fixed to the housing body 11. is doing. The stator 32 includes a stator core 32a provided by laminating a plurality of electromagnetic steel plates in the direction of the central axis of the housing body 11, and a coil 32b wound around the stator core 32a.
[0021] 以上のように構成された圧縮機において、電動機 30に通電することにより駆動シャ フト 23を回転させると、圧縮部 20において固定スクロール部材 21に対して旋回スク ロール部材 22が旋回する。このとき、旋回スクロール部材 22と仕切部材 24cとの位 置関係は図 2のようになる。  In the compressor configured as described above, when the drive shaft 23 is rotated by energizing the electric motor 30, the orbiting scroll member 22 rotates relative to the fixed scroll member 21 in the compression unit 20. At this time, the positional relationship between the orbiting scroll member 22 and the partition member 24c is as shown in FIG.
[0022] これにより、冷媒吸入管 14力もハウジング 10内に流入する冷媒は、圧縮部 20に流 入し、固定スクロール部材 21及び旋回スクロール部材 22の各渦巻体の間で圧縮さ れ、冷媒吐出孔 21aから空間 15aに吐出される。空間 15aに吐出された冷媒は、連 通路 16を流通して空間 17に流入して電動機 30を冷却し、連通路 18を流通して空間 15bに流入して冷媒吐出管 13からハウジング 10外に流出する。ここで、空間 17は上 部フレーム 24と駆動シャフト 23との隙間を介して背圧室と連通していることから、旋 回スクロール部材 22には、空間 17の圧力によって旋回スクロール部材 22を上方に 押し上げる力が作用する。  Thus, the refrigerant that also flows into the housing 10 as well as the refrigerant suction pipe 14 flows into the compression unit 20 and is compressed between the spiral bodies of the fixed scroll member 21 and the orbiting scroll member 22 to discharge the refrigerant. It is discharged from the hole 21a into the space 15a. The refrigerant discharged into the space 15a flows through the communication path 16 and flows into the space 17, cools the electric motor 30, flows through the communication path 18, flows into the space 15b, and flows out of the housing 10 from the refrigerant discharge pipe 13. leak. Here, since the space 17 communicates with the back pressure chamber through a gap between the upper frame 24 and the drive shaft 23, the orbiting scroll member 22 is moved upward by the pressure of the space 17. The pushing force acts on.
[0023] また、下部フレーム 25の下方の空間 19に貯留された潤滑油は、油ポンプ 26によつ て吸引されて駆動シャフト 23の潤滑油流通路 23bを流通し、駆動シャフト 23の上端 側から流出して各摺動部を潤滑する。背圧室の高圧部 24aに流入した潤滑油は、図 2 (b)及び図 3に示すように、所定の円軌道上を旋回する旋回スクロール部材 22の所 定の旋回位置において給油溝 22aを介して低圧部 24bに流入し、低圧部 24bに設け られた旋回スクロール部材 22の図示しな 、自転規制機構等を潤滑する。低圧部 24b に流入した潤滑油は、低圧部 24bの圧力が所定以上の圧力となると、背圧調整弁 21 cが開放されて連通路 21bを流通し、固定スクロール部材 21及び旋回スクロール部 材 22の各渦巻体の間に流入し、固定スクロール部材 21と旋回スクロール部材 22と の間の摺動部が潤滑される。 [0023] The lubricating oil stored in the space 19 below the lower frame 25 is sucked by the oil pump 26 and flows through the lubricating oil flow passage 23b of the drive shaft 23. The oil slides out and lubricates each sliding part. As shown in FIGS. 2 (b) and 3, the lubricating oil that has flowed into the high pressure portion 24a of the back pressure chamber passes through the oil supply groove 22a at a predetermined orbiting position of the orbiting scroll member 22 that orbits on a predetermined circular path. Into the low-pressure part 24b through the low-pressure part 24b. The rotating scroll mechanism 22 is lubricated (not shown). When the pressure of the low pressure part 24b becomes a predetermined pressure or higher, the lubricating oil flowing into the low pressure part 24b opens the back pressure regulating valve 21c and flows through the communication passage 21b, and the fixed scroll member 21 and the orbiting scroll member 22 And the sliding portion between the fixed scroll member 21 and the orbiting scroll member 22 is lubricated.
[0024] このように本実施形態の圧縮機によれば、旋回スクロール部材 22と上部フレーム 2 4との間の空間に設けられた背圧室を内周部に位置する高圧部 24aと外周部に位置 する低圧部 24bとに仕切る環状の仕切部材 24cを備え、旋回スクロール部材 22の下 面に、旋回スクロール部材 22の所定の旋回位置で高圧部 24aと低圧部 24bとを連通 することにより、高圧部 24aに供給された潤滑油を低圧部 24bに流通させることが可 能な給油溝 22aを設けている。これにより、旋回スクロール部材 22に簡単な加工を施 すことにより、旋回スクロール部材 22の所定の旋回位置で高圧部 24aと低圧部 24bと を連通することができるので、製造コストの低減を図ることが可能となる。  As described above, according to the compressor of the present embodiment, the high pressure portion 24a and the outer peripheral portion are located in the inner peripheral portion of the back pressure chamber provided in the space between the orbiting scroll member 22 and the upper frame 24. An annular partition member 24c that partitions into a low-pressure part 24b positioned at a lower part of the orbiting scroll member 22 is connected to the lower surface of the orbiting scroll member 22 by connecting the high-pressure part 24a and the low-pressure part 24b at a predetermined orbiting position. An oil supply groove 22a is provided to allow the lubricating oil supplied to the high pressure section 24a to flow to the low pressure section 24b. Thus, by performing a simple process on the orbiting scroll member 22, the high pressure portion 24a and the low pressure portion 24b can communicate with each other at a predetermined orbiting position of the orbiting scroll member 22, thereby reducing the manufacturing cost. Is possible.
[0025] また、給油溝 22aを、高圧部 24a側に位置するように設け、高圧部 24aと低圧部 24 bとを連通するときの旋回スクロール部材 22の所定の旋回位置においてのみ端部が 低圧部 24b側に位置するようにしている。これにより、給油溝 22aに常に下方力 上 方に向力つて圧力をカ卩えることができるので、給油溝 22aの周囲の部材によって仕切 部材 24cが傷つけられることはな 、。  [0025] Further, the oil supply groove 22a is provided so as to be positioned on the high pressure portion 24a side, and the end portion of the orbiting scroll member 22 has a low pressure only when the high pressure portion 24a and the low pressure portion 24b communicate with each other. It is located on the part 24b side. As a result, the pressure can always be applied to the oil supply groove 22a by applying downward force upward, so that the partition member 24c is not damaged by the members around the oil supply groove 22a.
[0026] また、給油溝 22aを、旋回スクロール部材 22の径方向に延びるように設けている。こ れにより、旋回スクロール部材 22の最小限の加工によって高圧部 24aと低圧部 24b とを連通することができるので、製造コストの低減を図ることが可能となる。  In addition, the oil supply groove 22a is provided so as to extend in the radial direction of the orbiting scroll member 22. As a result, the high pressure portion 24a and the low pressure portion 24b can be communicated with each other with a minimum amount of processing of the orbiting scroll member 22, so that the manufacturing cost can be reduced.
[0027] また、冷媒として二酸化炭素を用いたので、冷媒の漏洩等による地球温暖化ゃォ ゾン層破壊等の環境への影響を最小限とすることが可能となる。  [0027] Further, since carbon dioxide is used as the refrigerant, it is possible to minimize the influence on the environment such as global warming and ozone layer destruction due to refrigerant leakage or the like.
本明細書に記載した好ま ヽ態様は例示的なものであり限定的なものではな!、。発 明の範囲は添付のクレイムによって示されており、それらクレイムの意味の中に入る 全ての変形例は本発明に含まれるものである。  The preferred embodiments described herein are exemplary and not limiting! The scope of the invention is indicated by the appended claims, and all variations that fall within the meaning of these claims are intended to be included in the present invention.

Claims

請求の範囲 The scope of the claims
[1] ハウジング(10)に固定され、鏡板の一端面に渦巻体が設けられた固定スクロール部 材 (21)と、  [1] A fixed scroll member (21) fixed to the housing (10) and provided with a spiral on one end surface of the end plate;
固定スクロール部材(21)と対向するように設けられ、鏡板の固定スクロール部材(21 )側に渦巻体が設けられた旋回スクロール部材 (22)と、  An orbiting scroll member (22) provided to face the fixed scroll member (21) and having a spiral body on the fixed scroll member (21) side of the end plate;
旋回スクロール部材 (22)を所定の円軌道上を旋回させるための駆動シャフト(23)と 旋回スクロール部材(22)の渦巻体の反対面側に設けられ、駆動シャフト(23)を回 転自在に支持するための軸受フレーム(24)と  Drive shaft (23) for turning the orbiting scroll member (22) on a predetermined circular orbit and provided on the opposite side of the spiral body of the orbiting scroll member (22) so that the drive shaft (23) can be rotated. Bearing frame (24) to support
軸受フレーム(24)に設けられ、旋回スクロール部材(22)と軸受フレーム(24)との間 の背圧室を径方向中央部側に位置する高圧部(24a)と径方向外周部側に位置する 低圧部(24b)とに仕切るための環状の仕切部材(24c)とを備え、  Provided on the bearing frame (24), the back pressure chamber between the orbiting scroll member (22) and the bearing frame (24) is positioned on the high-pressure part (24a) located on the radial center side and on the radial outer peripheral side. An annular partition member (24c) for partitioning into the low pressure part (24b),
旋回スクロール部材(22)の渦巻体の反対面側には、旋回スクロール部材(22)の所 定の旋回位置で高圧部(24a)と低圧部(24b)とを連通するための給油溝(22a)が 設けられている  An oil supply groove (22a) for communicating the high pressure part (24a) and the low pressure part (24b) at a predetermined turning position of the orbiting scroll member (22) is provided on the opposite side of the spiral body of the orbiting scroll member (22). ) Is provided
圧縮機。  Compressor.
[2] 前記給油溝(22a)は、高圧部(24a)と低圧部(24b)を連通するとき以外は高圧部(2 4a)側に位置するように旋回スクロール部材(22)に設けられて 、る  [2] The oil supply groove (22a) is provided on the orbiting scroll member (22) so as to be positioned on the high pressure part (24a) side except when the high pressure part (24a) and the low pressure part (24b) are communicated. RU
請求項 1記載の圧縮機。  The compressor according to claim 1.
[3] 前記給油溝(22a)は、旋回スクロール部材(22)の径方向に延びるように設けられて いる  [3] The oil supply groove (22a) is provided to extend in the radial direction of the orbiting scroll member (22).
請求項 1記載の圧縮機。  The compressor according to claim 1.
[4] 前記給油溝(22a)は、旋回スクロール部材(22)の径方向に延びるように設けられ ている [4] The oil supply groove (22a) is provided to extend in the radial direction of the orbiting scroll member (22).
請求項 2記載の圧縮機。  The compressor according to claim 2.
[5] 前記冷媒は、二酸化炭素である [5] The refrigerant is carbon dioxide.
請求項 1乃至 4の何れか一項に記載の圧縮機。  The compressor according to any one of claims 1 to 4.
PCT/JP2007/062241 2006-06-27 2007-06-18 Compressor WO2008001639A1 (en)

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CN103375407A (en) * 2012-04-27 2013-10-30 比亚迪股份有限公司 Scroll compressor

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JP5071355B2 (en) * 2008-11-21 2012-11-14 パナソニック株式会社 Scroll compressor
JP5548586B2 (en) 2010-10-28 2014-07-16 日立アプライアンス株式会社 Scroll compressor
JP2012255430A (en) * 2011-02-07 2012-12-27 Panasonic Corp Compressor
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JP2008008161A (en) 2008-01-17
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EP2034187B1 (en) 2014-08-20

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