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JP2008008161A - Compressor - Google Patents

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Publication number
JP2008008161A
JP2008008161A JP2006176931A JP2006176931A JP2008008161A JP 2008008161 A JP2008008161 A JP 2008008161A JP 2006176931 A JP2006176931 A JP 2006176931A JP 2006176931 A JP2006176931 A JP 2006176931A JP 2008008161 A JP2008008161 A JP 2008008161A
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Japan
Prior art keywords
scroll member
orbiting scroll
pressure part
compressor
orbiting
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Pending
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JP2006176931A
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Japanese (ja)
Inventor
Akiyoshi Higashiyama
彰良 東山
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Sanden Corp
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Sanden Corp
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Publication date
Application filed by Sanden Corp filed Critical Sanden Corp
Priority to JP2006176931A priority Critical patent/JP2008008161A/en
Priority to EP07767139.4A priority patent/EP2034187B1/en
Priority to PCT/JP2007/062241 priority patent/WO2008001639A1/en
Publication of JP2008008161A publication Critical patent/JP2008008161A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0253—Details concerning the base
    • 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
    • F04C29/028—Means for improving or restricting lubricant flow
    • 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
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • F04C2210/261—Carbon dioxide (CO2)

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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

<P>PROBLEM TO BE SOLVED: To provide a compressor enabling lubrication oil supplied to a high pressure part of a back pressure chamber to flow to a low pressure part with a simple structure. <P>SOLUTION: The compressor is equipped with an annular partition member 24c for dividing the back pressure chamber provided in a space between an orbiting scroll member 22 and an upper flame 24 into the high pressure part 24a situated at an inner peripheral part and the low pressure part 24b situated at an outer peripheral part and is provided in a lower surface of the orbiting scroll member 22 with an oil supply groove 22a for bringing the high pressure part 24a and the low pressure part 24b into communication at a predetermined orbiting position of the orbiting scroll member 22 to enable the lubrication oil supplied to the high pressure part 24a to flow to the low pressure part 24b. With the simple processing made to the orbiting scroll member 22, the high pressure part 24a and the low pressure part 24b can be brought into communication at the predetermined orbiting position of the orbiting scroll member 22 and a manufacturing cost can be reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

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。   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.

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）。
特開２００６−３７８９６号公報 Conventionally, as this type of compressor, a fixed scroll member fixed to a housing and provided with a spiral body on one end face of the end plate, and provided to face the fixed scroll member, the spiral body on the fixed scroll side of the end plate A orbiting scroll member provided with a rotating scroll member, a drive shaft for orbiting the orbiting scroll member on a predetermined circular path, and a bearing frame provided on the opposite surface side of the spiral body of the orbiting scroll member and rotatably supporting the drive shaft. A ring-shaped partition member provided on the bearing frame, which divides a back pressure chamber between the orbiting scroll member and the bearing frame into a high-pressure portion located in the radial center portion and a low-pressure portion located radially outside, and the orbiting scroll The lubricating oil supplied to the high-pressure part is circulated to the low-pressure part by connecting the high-pressure part and the low-pressure part at a predetermined turning position of the orbiting scroll. Those with capacity of oil supply passage is known (e.g., see Patent Document 1).
JP 2006-37896 A

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するため、加工工数が多くなり製造コストが高くなるという問題点があった。   In the conventional compressor, in order to form the oil supply passage, the oil supply passage is formed inside the end plate of the orbiting scroll member by making a straight hole with a tool such as a drill from the outside of the orbiting scroll member. . 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 an oil supply flow path, the operation | work which opens a hole and the operation | work which fills the hole which is not used generate | occur | produces, There existed a problem that processing man-hours increased and manufacturing cost became high.

本発明は前記問題点に鑑みてなされたものであり、そ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。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a compressor capable of circulating lubricating oil supplied to the high pressure portion of the back pressure chamber to the low pressure portion with a simple structure. It is to provide.

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を備え、固定スクロール部材の渦巻体及び旋回スクロール部材の渦巻体の間で冷媒を圧縮するようにした圧縮機において、前記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環状の仕切部材を備え、旋回スクロールの渦巻体の反対面側に、旋回スクロールの所定の旋回位置で高圧部と低圧部とを連通可能な給油溝を設けている。   In order to achieve the above object, the present invention provides a fixed scroll member fixed to a housing and provided with a spiral body on one end face of the end plate, and provided so as to face the fixed scroll member. A revolving scroll member provided with a body, a drive shaft for revolving the revolving scroll member on a predetermined circular path, and a bearing frame that is provided on the opposite side of the spiral body of the revolving scroll member and rotatably supports the drive shaft And a back pressure between the orbiting scroll member and the bearing frame provided in the bearing frame, wherein the refrigerant is compressed between the spiral body of the fixed scroll member and the spiral body of the orbiting scroll member. An annular partition member that divides the chamber into a high-pressure portion located on the radially central portion side and a low-pressure portion located on the radially outer peripheral portion side; Of the opposite side of the spiral body is provided with a communicable oil supply groove and a high pressure portion and a low pressure portion at a predetermined turning position of the orbiting scroll.

これにより、旋回スクロール部材に給油溝を形成するのみの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。   Thus, the high pressure portion and the low pressure portion of the back pressure chamber are communicated with each other at a predetermined orbiting position of the orbiting scroll member by simple processing only by forming an oil supply groove in the orbiting scroll member.

本発明によれば、旋回スクロール部材に簡単な加工を施すことにより、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。   According to the present invention, by performing simple processing on 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. It becomes possible to plan.

図１乃至図３は本発明の一実施形態を示すもので、図１は圧縮機の断面図、図２は旋回スクロール部材と仕切部材との位置関係を示す図、図３は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。   1 to 3 show an embodiment of the present invention, FIG. 1 is a sectional view of a compressor, FIG. 2 is a view showing a positional relationship between a turning scroll member and a partition member, and FIG. It is principal part sectional drawing of the compressor which shows the state which connected the part and the low voltage | pressure part.

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、圧縮によって超臨界状態となる二酸化炭素が冷媒として用いられる。   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 provided below the compression part 20 in the housing 10. It is a hermetic compressor provided with an electric motor 30 for driving the motor. In this compressor, carbon dioxide that becomes a supercritical state by compression is used as a refrigerant.

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から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１３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 made of a cylindrical member having a central axis oriented in the vertical direction, and a pair of caps 12 formed in a hemispherical shape that closes the upper end opening and the lower end opening of the housing body 11. . 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 refrigerant is connected to the peripheral surface of the housing body 11 where the compression unit 20 is located.

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。   The compression unit 20 is provided on the upper side of the housing body 11 so as to partition the inside of the housing 10 up and down, and is provided below the fixed scroll member 21, and rotates relative to the fixed scroll member 21. And a revolving scroll member 22 that can be revolved.

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からなり、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の径方向中央部の上面側には、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。   The fixed scroll member 21 is made of a disk-like member arranged with its central axis facing up and down, and a spiral body is provided on the lower surface side. A refrigerant discharge hole 21 a for discharging a compressed refrigerant is provided on the upper surface side of the central portion in the radial direction of the fixed scroll member 21. 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, which will be described later, and a back pressure adjustment valve 21c is provided in the communication passage 21b. ing.

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。   The orbiting scroll member 22 is a disk-shaped 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. Further, an oil supply groove 22a extending radially inward is provided on the lower surface side of the orbiting scroll member 22, and a high pressure portion and a low pressure portion of a back pressure chamber, which will be described later, are provided at a predetermined orbiting position of the orbiting scroll member 22. It comes to communicate.

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の回転中心から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を潤滑油流通路２３ｂに流通させるようになっている。   The drive shaft 23 is disposed with the central axis serving as the rotation center facing up and down, and the connecting portion 23 a with the orbiting scroll member is provided so as to be eccentric from the rotation center of the drive shaft 23. 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 25 provided so that the lower side partitions the inside of the housing 10 up and down. Is rotatably supported by. The drive shaft 23 is rotated by using the electric motor 30 as power, and the orbiting scroll member 22 is rotated on a predetermined circular orbit by the rotation of the drive shaft 23. The drive shaft 23 is provided with a lubricating oil flow passage 23b along the central axis so that the lubricating oil sucked by the oil pump 26 connected to the lower end side is circulated through the lubricating oil flow passage 23b.

上部フレーム２４は、上面側の径方向外側が周方向に亘っ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、上面を旋回スクロール部材２２の下面が摺動するようになっている。   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 on the outer peripheral side and the high pressure portion 24a positioned on the inner peripheral side. A partition member 24c for partitioning with the low-pressure part 24b located is provided. The partition member 24c is made of a member such as a synthetic resin formed in an annular shape, and the lower surface of the orbiting scroll member 22 slides on the upper surface.

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いる。   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 member 22 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 located on the low pressure part 24b side at a predetermined turning position.

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１５ｂ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によってハウジング１０内の上部フレーム２４と下部フレーム２５との間の空間１７に連通されている。また、ハウジング１０内の上部フレーム２４と下部フレーム２５との間の空間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。   A space above the fixed scroll member 21 in the housing 10 is partitioned by a partition member 15 into a space 15 a on the refrigerant discharge hole 21 a side and a space 15 b on the refrigerant discharge pipe 13 side of the fixed scroll member 21. The space 15 a on the refrigerant discharge hole 21 a side is communicated with the space 17 between the upper frame 24 and the lower frame 25 in the housing 10 by the communication path 16 provided in the fixed scroll member 21 and the upper frame 24. A space 17 between the upper frame 24 and the lower frame 25 in the housing 10 is communicated with a space 15 b on the refrigerant discharge pipe 13 side by a communication path 18 provided in the fixed scroll member 21 and the upper frame 24. . Furthermore, 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 used as an oil pump. 26 circulates through the lubricating oil flow passage 23 b of the drive shaft 23.

電動機３０は、上部フレーム２４と下部フレーム２５との間の空間１７に設けられ、駆動シャフト２３に固定された永久磁石からなるロータ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とを有している。   The electric motor 30 is provided in the space 17 between the upper frame 24 and the lower frame 25, is provided with a rotor 31 made of a permanent magnet fixed to the drive shaft 23, and is provided so as to surround the rotor 31, and is fixed to the housing body 11. The stator 32 is provided. The stator 32 has a stator core 32a provided by laminating a plurality of electromagnetic steel plates in the central axis direction of the housing body 11, and a coil 32b wound around the stator core 32a.

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.

これにより、冷媒吸入管１４からハウジング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。   As a result, the refrigerant flowing into the housing 10 from 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, and the space 15a from the refrigerant discharge hole 21a. Discharged. The refrigerant discharged into the space 15 a flows through the communication path 16 and flows into the space 17 to cool the electric motor 30, flows through the communication path 18 and flows into the space 15 b, 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 pushed upward by the orbiting scroll member 22 by the pressure of the space 17. Force acts.

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によっ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の図示しない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の圧力が所定以上となると、背圧調整弁２１ｃ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。   Further, 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, flows out from the upper end side of the drive shaft 23, and flows into each slide. Lubricate moving parts. As shown in FIGS. 2B and 3, the lubricating oil flowing into the high pressure portion 24a of the back pressure chamber passes through the oil supply groove 22a at a predetermined turning position of the orbiting scroll member 22 that revolves on a predetermined circular orbit. Then, it flows into the low pressure part 24b and lubricates a rotation restricting mechanism (not shown) of the orbiting scroll member 22 provided in the low pressure part 24b. When the pressure of the low pressure portion 24b becomes equal to or higher than the predetermined pressure, the lubricating oil flowing into the low pressure portion 24b opens the back pressure regulating valve 21c and flows through the communication passage 21b, and each spiral body of the fixed scroll member 21 and the orbiting scroll member 22 The sliding portion between the fixed scroll member 21 and the orbiting scroll member 22 is lubricated.

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２４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を設けたので、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、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 back pressure chamber provided in the space between the orbiting scroll member 22 and the upper frame 24 has the high pressure portion 24a positioned at the inner peripheral portion and the low pressure positioned at the outer peripheral portion. An annular partition member 24c that partitions into a part 24b is provided, and the high pressure part 24a and the low pressure part 24b are connected to the lower surface of the orbiting scroll member 22 at a predetermined orbiting position on the lower surface of the orbiting scroll member 22, thereby supplying the high pressure part 24a. Since the oil supply groove 22a through which the lubricated oil can be circulated to the low-pressure portion 24b is provided, the revolving scroll member 22 is simply processed so that the high-pressure portion 24a The low-pressure part 24b can be communicated with each other, and the manufacturing cost can be reduced.

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２４ｂ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たので、給油溝２２ａに常に下方から上方に向かって圧力を加えることができ、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い。   Further, the oil supply groove 22a is provided so as to be located on the high pressure portion 24a side, and the end portion is located on the low pressure portion 24b side only at a predetermined turning position of the orbiting scroll member 22 when the high pressure portion 24a and the low pressure portion 24b are communicated. Since it is located, pressure can always be applied to the oil supply groove 22a from below to above, and the partition member 24c is not damaged by the members around the oil supply groove 22a.

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たので、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、製造コストの低減を図ることが可能となる。   Further, since 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 by a minimum processing of the orbiting scroll member 22, and the manufacturing cost can be reduced. Reduction can be achieved.

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やオ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。   In addition, 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 leakage of the refrigerant.

本発明の一実施形態を示す圧縮機の断面図Sectional drawing of the compressor which shows one Embodiment of this invention 旋回スクロール部材と仕切部材との位置関係を示す図The figure which shows the positional relationship of a turning scroll member and a partition member 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Cross-sectional view of the main part of the compressor showing a state in which the high-pressure part and the low-pressure part are communicated by the oiling groove

符号の説明Explanation of symbols

１０…ハウジング、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。   DESCRIPTION OF SYMBOLS 10 ... Housing, 20 ... Compression part, 21 ... Fixed scroll member, 22 ... Orbiting scroll member, 22a ... Oil supply groove, 23 ... Drive shaft, 24 ... Upper frame, 24a ... High pressure part, 24b ... Low pressure part, 24c ... Partition member .

Claims (4)

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を備え、固定スクロール部材の渦巻体及び旋回スクロール部材の渦巻体の間で冷媒を圧縮するようにした圧縮機において、
前記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環状の仕切部材を備え、
旋回スクロールの渦巻体の反対面側に、旋回スクロールの所定の旋回位置で高圧部と低圧部とを連通可能な給油溝を設けた
ことを特徴とする圧縮機。 A fixed scroll member fixed to the housing and provided with a spiral body on one end surface of the end plate; a revolving scroll member provided to face the fixed scroll member and provided with a spiral body on the fixed scroll side of the end plate; A drive shaft for turning the scroll member on a predetermined circular orbit, and a bearing frame provided on the opposite surface side of the spiral body of the orbiting scroll member and rotatably supporting the drive shaft; In the compressor that compresses the refrigerant between the spiral bodies of the orbiting scroll member,
An annular partition member provided on the bearing frame, which partitions a back pressure chamber between the orbiting scroll member and the bearing frame into a high pressure portion located on the radial center portion side and a low pressure portion located on the radially outer peripheral side. Prepared,
A compressor characterized in that an oil supply groove capable of communicating a high-pressure part and a low-pressure part at a predetermined turning position of the orbiting scroll is provided on the opposite surface side of the orbiting scroll. 前記給油溝を、高圧部側に位置するように設けた
ことを特徴とする請求項１記載の圧縮機。 The compressor according to claim 1, wherein the oil supply groove is provided so as to be positioned on a high-pressure part side. 前記給油溝を、旋回スクロール部材の径方向に延びるように設けた
ことを特徴とする請求項１または２記載の圧縮機。 The compressor according to claim 1 or 2, wherein the oil supply groove is provided so as to extend in a radial direction of the orbiting scroll member. 前記冷媒として二酸化炭素を用いた
ことを特徴とする請求項１乃至３の何れか一項に記載の圧縮機。 The compressor according to any one of claims 1 to 3, wherein carbon dioxide is used as the refrigerant.
JP2006176931A 2006-06-27 2006-06-27 Compressor Pending JP2008008161A (en)

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JP2006176931A JP2008008161A (en) 2006-06-27 2006-06-27 Compressor
EP07767139.4A EP2034187B1 (en) 2006-06-27 2007-06-18 Scroll compressor
PCT/JP2007/062241 WO2008001639A1 (en) 2006-06-27 2007-06-18 Compressor

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JP2010121578A (en) * 2008-11-21 2010-06-03 Panasonic Corp Scroll compressor
CN102628442A (en) * 2011-02-07 2012-08-08 松下电器产业株式会社 Compressor
KR101287716B1 (en) 2010-10-28 2013-07-18 히타치 어플라이언스 가부시키가이샤 Scroll compressor
CN105889064A (en) * 2016-06-15 2016-08-24 珠海格力节能环保制冷技术研究中心有限公司 Scroll compressor and air conditioner
CN106151043A (en) * 2015-04-07 2016-11-23 珠海格力节能环保制冷技术研究中心有限公司 Screw compressor upper bracket and there is its screw compressor

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CN103375407B (en) * 2012-04-27 2016-04-27 比亚迪股份有限公司 A kind of scroll compressor
CN207795583U (en) * 2017-12-27 2018-08-31 艾默生环境优化技术(苏州)有限公司 Oil supply mechanism and horizontal compressor with same

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JPH1122665A (en) * 1997-06-30 1999-01-26 Matsushita Electric Ind Co Ltd Hermetic electric scroll compressor
JPH11280678A (en) * 1998-03-31 1999-10-15 Fujitsu General Ltd Scroll compressor

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JP4329528B2 (en) * 2003-12-19 2009-09-09 株式会社豊田自動織機 Scroll compressor
JP2006037896A (en) 2004-07-29 2006-02-09 Matsushita Electric Ind Co Ltd Scroll compressor

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JPH1122665A (en) * 1997-06-30 1999-01-26 Matsushita Electric Ind Co Ltd Hermetic electric scroll compressor
JPH11280678A (en) * 1998-03-31 1999-10-15 Fujitsu General Ltd Scroll compressor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010121578A (en) * 2008-11-21 2010-06-03 Panasonic Corp Scroll compressor
KR101287716B1 (en) 2010-10-28 2013-07-18 히타치 어플라이언스 가부시키가이샤 Scroll compressor
CN102628442A (en) * 2011-02-07 2012-08-08 松下电器产业株式会社 Compressor
CN106151043A (en) * 2015-04-07 2016-11-23 珠海格力节能环保制冷技术研究中心有限公司 Screw compressor upper bracket and there is its screw compressor
CN105889064A (en) * 2016-06-15 2016-08-24 珠海格力节能环保制冷技术研究中心有限公司 Scroll compressor and air conditioner

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EP2034187A1 (en) 2009-03-11

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