WO1991006773A1 - Scroll compressor - Google Patents

Scroll compressor Download PDF

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Publication number
WO1991006773A1
WO1991006773A1 PCT/JP1990/001421 JP9001421W WO9106773A1 WO 1991006773 A1 WO1991006773 A1 WO 1991006773A1 JP 9001421 W JP9001421 W JP 9001421W WO 9106773 A1 WO9106773 A1 WO 9106773A1
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WO
WIPO (PCT)
Prior art keywords
scroll
back pressure
pressure
compression
revolving
Prior art date
Application number
PCT/JP1990/001421
Other languages
French (fr)
Japanese (ja)
Inventor
Manabu Sakai
Michio Yamamura
Jiro Yuda
Yoshinori Kojima
Syuichi Yamamoto
Sadao Kawahara
Shigeru Muramatsu
Osamu Aiba
Original Assignee
Matsushita Electric Industrial Co., Ltd.
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 Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to KR1019910700686A priority Critical patent/KR920701685A/en
Publication of WO1991006773A1 publication Critical patent/WO1991006773A1/en

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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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid
    • 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

Definitions

  • the present invention relates to a scroll compressor.
  • the back pressure partition 2 1 (a lubricating oil force having a pressure equal to the discharge pressure of the compression mechanism acting on the center side of the back surface of the swivel end plate 11 ⁇ a bearing that accommodates the back pressure partition 21) By flowing into the back pressure partition band receiving groove 22 formed in the member, it is pressed against the back surface of the turning head 11.
  • the back pressure divider band force tends to become unstable, especially immediately after starting or depending on operating conditions, and the back pressure divider band is pressed against the back of the turning head plate. Without this, lubricating oil with excessive pressure flows into the back pressure chamber, which increases power loss due to sliding of the rotating end plate, reduces the efficiency of the compressor, and also reduces reliability. It is.
  • the present invention solves the above-mentioned problems.
  • the back pressure partitioning band operates so as to be constantly pressed against the rear surface of the turning head plate in a stable state.
  • the discharge pressure of the compression mechanism acts on the center side of the back of the cylinder, and an appropriate intermediate pressure between the discharge pressure and the suction pressure acts on the outside of the compression mechanism, with the aim of realizing stable operation.
  • a spring member is provided between the back pressure partition and a ring-shaped groove formed in a bearing member for accommodating the back pressure partition so that the back pressure partition is always pressed against the back surface of the turning head plate.
  • a ring-shaped member is provided between the spring member and the back pressure partition band in order to make the force of the spring member pressing the back pressure partition band uniform.
  • the lubricating oil having a pressure equal to the discharge pressure of the compression mechanism acting on the center of the back surface of the turning head plate more reliably flows into the groove formed in the bearing member accommodating the back pressure partition band.
  • a step is provided between the inner and outer axial support portions of a groove formed in a bearing member accommodating the back pressure partition so as to be pressed against the back surface of the turning head plate.
  • FIGS. 5 and 6 are longitudinal sectional views of another embodiment of the back pressure divider band.
  • FIG. 2 is a longitudinal section El of the scroll compressor according to one embodiment of the present invention.
  • FIG. 3 is an enlarged view of a compression mechanism of the compressor.
  • a stator 4 of an electric motor 3 for driving a compression mechanism 2 is fixed inside the closed casing 1, and a crank shaft 6 for driving the compression mechanism 2 is connected to a rotor 5 of the motor 3.
  • the compression mechanism 2 includes a fixed scroll 8 on a fixed frame 7, and a swiveling scroll blade 10 that engages with the fixed scroll 8 to form a plurality of compression work spaces 12.
  • a turning scroll 9 formed on a turning head plate 11 and an Oldham ring 13 that prevents the turning scroll 9 from rotating and only turns.
  • the turning drive shaft 14 provided on the side opposite to the blades 10 and the eccentric bearing 16 provided inside the main shaft 15 formed at one end of the crank shaft 6 are inserted into the crank shaft 6. Is supported by a bearing member 18 having a main bearing 17 for supporting the main shaft 15.
  • the back surface of the turning head plate 11 is slidable with the back surface of the turning head plate 11 to block the minute gap 19, and the discharge pressure of the compression mechanism 2 acts on the center side of the back surface of the turning head plate 11, and the outer side thereof is
  • a ring-shaped back pressure partition 21 is provided in the back pressure chamber 20 so as to apply an appropriate intermediate pressure between the discharge pressure and the suction pressure.
  • a spring member 23 that presses the back pressure partition band 21 against the back surface of the revolving end plate 11 is provided between the back pressure partition band 21 and a groove 22 formed in the bearing member 18. .
  • the pressure of the back pressure chamber 20 is determined by minute holes and gaps communicating with the back pressure chamber 20. Refrigerant sucked from the suction pipe 26 of the compressor, enters the compression mechanism 2 from the suction inlet 27 of the compression mechanism 2, and is compressed and discharged in the compression work space 12 From the outlet 28, it enters the discharge space 29 provided in the lower part of the compression mechanism 2, passes through the discharge communication hole 30 penetrating the fixed frame 7 and the outer periphery of the bearing member 18, passes through the space in the sealed container, and It is discharged outside the compressor from 31.
  • the refrigerant sucked in from the suction port 27 of the compression mechanism 2 is sequentially compressed in the compression work space 12 and discharged from the discharge port 28.
  • an axial thrust force is applied from the compression work space 12 to the turning head 11 of the turning scroll 9, so that the rear surface of the turning head 11 is pressed by the axial support 24 of the bearing member 18.
  • the minute gap 19 on the back side of the revolving head plate 11 is partitioned by a back pressure partition band 21, the discharge pressure of the compressor mechanism 2 acts on the center side, and the discharge pressure and suction pressure on the outside.
  • FIG. 5 shows a second embodiment of the present invention.
  • the spring member 23 is The force pressing the back pressure partition 21 acts uniformly.
  • FIG. 6 shows a third embodiment of the present invention, in which a shaft accommodating the back pressure partition 21 is shown.
  • the back pressure partitioning band is always pressed against the back surface of the turning head plate by the spring member and acts on the center side of the turning head plate immediately after start-up or irrespective of operating conditions.
  • the axial pressure added to the swivel head of the swivel scroll from the compression working space by the discharge pressure of the air and the appropriate intermediate pressure between the discharge pressure and the suction pressure acting on the outside. Alleviates the lasting force, reduces power loss due to sliding on the plane of the revolving head, and improves the efficiency of the compressor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

A spring member (23) is confined between a back pressure sealing band (21) and a ring groove (22) formed in a bearing member (18) housing this back pressure sealing band (21) so as to constantly press the back pressure sealing band (21) against the rear surface of a revolving mirror plate (11). The back pressure sealing band (21) is constantly pressed against the rear surface of the revolving mirror plate (11) by the spring member (23) irrespective of the conditions immediately after the start or the operating conditions, the thrust force applied in the axial direction to the revolving mirror plate (11) of the revolving scroll from a space for the compression works can be relieved due to the discharge pressure of a compressor mechanism acting on the center of the revolving mirror plate (11) and a suitable intermediate pressure between a discharge pressure acting on the outer portion of the plate and an intake pressure, whereby the power loss due to the sliding and the like made on the planar surface of the revolving mirror plate (11) is reduced, thus improving the working efficiency of the compressor.

Description

十 明 細 書  Jumei
発明の名称  Title of invention
ス ク ロ ール圧縮機  Scroll compressor
技術分野 Technical field
本発明はスク ロール圧縮機に関する ものである。  The present invention relates to a scroll compressor.
背景技術 Background art
従来のス ク ロ ール圧縮機 例えば特開平第 1 - 1 7 87 85号公報 などに示されているよ う 〖 第 1 図に示す旋回ス ク ロ ールの旋 回鏡板 1 1に圧縮作業空間か ら付加される軸方向ス ラ ス トカを緩 和するために前記旋回鏡板の背面の中心側に圧縮機構の吐出圧 力が作用 し その外側に吐出圧力と吸入圧力との間の適当な中 間の圧力が作用するよ う に 前記旋回鏡板 1 1と こ の旋回鏡板の 背面が摺動自在に接する軸受部材の軸方向支持部 24と の微小空 隙 1 9を背圧仕切帯 2 1で仕切っている。 そ して、 この背圧仕切帯 2 1 ( 旋回鏡板 1 1の背面の中心側に作用する圧縮機構の吐出圧 力と等しい圧力の潤滑油力 ί こ の背圧仕切帯 2 1を収容する軸受 部材に形成された背圧仕切帯収容溝 2 2に流入する こ とで旋回鏡 板 1 1の背面に押圧されている。  Conventional scroll compressor As shown in, for example, Japanese Patent Application Laid-Open No. 1-178785, etc. 圧 縮 Compression work is performed on the rotating mirror plate 11 of the revolving scroll shown in FIG. The discharge pressure of the compression mechanism acts on the center side of the back surface of the turning head plate to moderate the axial thruster added from the space, and an appropriate pressure between the discharge pressure and the suction pressure is applied to the outside thereof. A small gap 19 between the revolving head plate 11 and the axial support portion 24 of the bearing member slidably in contact with the back surface of the revolving head plate so that an intermediate pressure acts on the back pressure partition band 21 It is divided by. Then, the back pressure partition 2 1 (a lubricating oil force having a pressure equal to the discharge pressure of the compression mechanism acting on the center side of the back surface of the swivel end plate 11 ί a bearing that accommodates the back pressure partition 21) By flowing into the back pressure partition band receiving groove 22 formed in the member, it is pressed against the back surface of the turning head 11.
しか しなが ^ 上記従来技術で 背圧仕切帯力 特に始動 直後あるいは運転条件などによ って、 こ の背圧仕切帯の動作が 不安定とな りやすく、 そのた 旋回鏡板の背面に押圧されず に 背圧室に過大の圧力の潤滑油が流入 して、 旋回鏡板平面の 摺動などによる動力損失が増大 し 圧縮機の効率を低下させる と と もに 信頼性の低下を招 く ものである。  However, in the above-mentioned conventional technology, the back pressure divider band force tends to become unstable, especially immediately after starting or depending on operating conditions, and the back pressure divider band is pressed against the back of the turning head plate. Without this, lubricating oil with excessive pressure flows into the back pressure chamber, which increases power loss due to sliding of the rotating end plate, reduces the efficiency of the compressor, and also reduces reliability. It is.
発明の開示 そ こで本発明 上記課題を解決する もの 始動時などの いかなる運転条件においても常に背圧仕切帯が安定 した状態で 旋回鏡板の背面に押圧されるよ う に動作し これによ り旋回鏡 板の背面の中心側に圧縮機構の吐出圧力が作用 し その外側に 吐出圧力と吸入圧力との間の適当な中間の圧力が作用 し 安定 運転の実現を目的とする ものである。 Disclosure of the invention Therefore, the present invention solves the above-mentioned problems. Under any operating conditions such as start-up, the back pressure partitioning band operates so as to be constantly pressed against the rear surface of the turning head plate in a stable state. The discharge pressure of the compression mechanism acts on the center side of the back of the cylinder, and an appropriate intermediate pressure between the discharge pressure and the suction pressure acts on the outside of the compression mechanism, with the aim of realizing stable operation.
具体的に 背圧仕切帯と、 この背圧仕切帯を収容する軸受 部材に形成された リ ング状の溝との間 前記背圧仕切帯が常 に旋回鏡板の背面に押圧されるよ う にばね部材を設けた もので ある。  Specifically, between the back pressure partition and a ring-shaped groove formed in a bearing member for accommodating the back pressure partition so that the back pressure partition is always pressed against the back surface of the turning head plate. A spring member is provided.
ま 前記ばね部材が背圧仕切帯を押圧する力を均一にする ために このばね部材と背圧仕切帯との間に リ ング状の部材を 設けたものであ る。  Further, a ring-shaped member is provided between the spring member and the back pressure partition band in order to make the force of the spring member pressing the back pressure partition band uniform.
ま よ り確実に背圧仕切帯か 旋回鏡板の背面の中心側に 作用する圧縮機構の吐出圧力と等しい圧力の潤滑油が背圧仕切 帯を収容する軸受部材に形成された溝に流入して旋回鏡板の背 面に押圧される よ う に 前記背圧仕切帯を収容する軸受部材に 形成された溝の内側と外側の軸方向支持部で段差を設けたもの The lubricating oil having a pressure equal to the discharge pressure of the compression mechanism acting on the center of the back surface of the turning head plate more reliably flows into the groove formed in the bearing member accommodating the back pressure partition band. A step is provided between the inner and outer axial support portions of a groove formed in a bearing member accommodating the back pressure partition so as to be pressed against the back surface of the turning head plate.
(？め 。 (? Me.
図面の簡単な説明  BRIEF DESCRIPTION OF THE FIGURES
第 1 図 ' 背圧仕切帯の従来例の縦断面 ¾ 第 2 図は本発明 の一実施例の圧縮機の縦断面 第 3 図は同圧縮機の圧縮機構 部分の縦断面 ¾ 第 4 図は同圧縮機構の背圧仕切帯付近の縦断 面 El 第 5 図および第 6 図は背圧仕切帯の他の実施例の縦断面 図である。 発明を実施する ための最良の形態 Fig. 1 '' Longitudinal cross section of conventional example of back pressure partition strip ¾ Fig. 2 is a vertical cross section of a compressor according to one embodiment of the present invention Fig. 3 is a vertical cross section of a compression mechanism portion of the compressor ¾ Fig. 4 Longitudinal section near the back pressure divider band of the compression mechanism El FIGS. 5 and 6 are longitudinal sectional views of another embodiment of the back pressure divider band. BEST MODE FOR CARRYING OUT THE INVENTION
以下に本発明の一実施例を図面に基づいて説明する。 第 2 図 に本発明の一実施例のス ク ロール圧縮機の縦断面 El 第 3 図に 同圧縮機の圧縮機構部の拡大図を示す。 密閉容器 1 の内部に 圧縮機構 2 を駆動する電動機 3 の固定子 4 が固定さ れ こ の電 動機 3 の回転子 5 に圧縮機構 2 を駆動する ク ラ ン ク 軸 6 が結合 している。 圧縮機構 2 は固定枠体 7 に固定ス ク ロ ール 8 と、 こ の固定ス ク ロ ール 8 と嚙み合っ て複数個の圧縮作業空間 12を形 成する旋回スク ロ ール羽根 10を旋回鏡板 11の上に形成した旋回 スク ロ ール 9 と、 この旋回スク ロ ール 9 の自転を防止して旋回 のみをさせるオルダム リ ング 13とを有し 前記旋回鏡板 11の旋 回ス ク ロ ール羽根 10とは反対側に設けた旋回駆動軸 14 ^ ク ラ ンク軸 6 の一端に形成した主軸 15の内方に設け られた偏心軸受 16に嵌入され このク ラ ン ク軸 6 はその主軸 15を支承する主軸 受 17を有する軸受部材 18で支持されている。 ま 前記旋回鏡 板 11の背面に この背面と は摺動自在であ り、 微小隙間 19を遮 断して、 旋回鏡板 11の背面の中心側に圧縮機構 2 の吐出圧力が 作用 し その外側の背圧室 20に吐出圧力 と吸入圧力 との間の適 当な中間の圧力が作用するよ う に仕切る リ ング状の背圧仕切帯 21が配設されている。 さ らに この背圧仕切帯 21と、 軸受部材 18 に形成された溝 22との間に こ の背圧仕切帯 21を前記旋回鏡板 11の背面に押圧するばね部材 23が配設されている。 なお背圧室 20の圧力 こ の背圧室 20に連通 した微細な孔ゃ隙間などで決 ま る。 圧縮機の吸入管 26か ら吸入した冷媒 圧縮機構 2 の吸 入口 27か ら圧縮機構 2 に入り、 圧縮作業空間 12で圧縮され 吐 出口 28から圧縮機構 2 の下部に設けられた吐出空間 29に入り、 固定枠体 7 と軸受部材 18の外周部を貫通する吐出連通孔 30を通 り、 密閉容器内の空間を経て、 吐出管 31よ り圧縮機外部に吐出 される。 次に 本発明の一実施例の作用を説明する。 圧縮機構 2 の吸入口 27か ら吸入された冷媒 圧縮作業空間 12で順次圧 縮され 吐出口 28から吐出される。 この と き、 旋回ス ク ロ ール 9 の旋回鏡板 11に圧縮作業空間 12から軸方向スラ ス ト力が付加 され そのため旋回鏡板 11の背面が軸受部材 18の軸方向支持部 24に押圧されよ う とする。 しかし 旋回鏡板 11の背面の微小隙 間 19は背圧仕切帯 21で仕切られており、 その中心側には圧縮機 構 2 の吐出圧力が作用 し ま その外側には吐出圧力と吸入 圧力 との間の適当な中間の圧力が作用するの 前記圧縮作業 空間 12側から付加される軸方向スラ ス ト力は緩和され 軸受部 材 18の軸方向支持部 24での摺動損失は低減される。 特に 始動 直後あるいは運転条件などによ って、 旋回鏡板 11の背面の中心 に作用する圧力の潤滑油力 この背圧仕切帯 21を収容する軸受 部材 18に形成した溝 22に流入せずに 背圧仕切帯 21が動作しな いよ うな場合で ^ 第 4 図に示すよ う に 背圧仕切帯 21はばね 部材 23によ り安定して旋回鏡板 11の背面に押圧され これによ り、 旋回鏡板 11の背面に 常に前記圧縮作業空間 12側から付 加される軸方向スラ ス ト力を緩和する力が作用する。 ま た、 第 5 図は本発明の第 2 の実施例であ り、 背圧仕切帯 21とばね部材 23との間に リ ング状の部材 25を設ける こ とによ り、 ばね部材 23 が背圧仕切帯 21を押圧する力が均一に作用する。 さ らに 第 6 図は本発明の第 3 の実施例であ り、 背圧仕切帯 21を収容する軸 受部材に設けた溝 22の内側と外側とで段差 d を設ける し と によ り、 こ の溝に潤滑油が流入 しやす く なる。 An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a longitudinal section El of the scroll compressor according to one embodiment of the present invention. FIG. 3 is an enlarged view of a compression mechanism of the compressor. A stator 4 of an electric motor 3 for driving a compression mechanism 2 is fixed inside the closed casing 1, and a crank shaft 6 for driving the compression mechanism 2 is connected to a rotor 5 of the motor 3. The compression mechanism 2 includes a fixed scroll 8 on a fixed frame 7, and a swiveling scroll blade 10 that engages with the fixed scroll 8 to form a plurality of compression work spaces 12. A turning scroll 9 formed on a turning head plate 11 and an Oldham ring 13 that prevents the turning scroll 9 from rotating and only turns. The turning drive shaft 14 provided on the side opposite to the blades 10 and the eccentric bearing 16 provided inside the main shaft 15 formed at one end of the crank shaft 6 are inserted into the crank shaft 6. Is supported by a bearing member 18 having a main bearing 17 for supporting the main shaft 15. The back surface of the turning head plate 11 is slidable with the back surface of the turning head plate 11 to block the minute gap 19, and the discharge pressure of the compression mechanism 2 acts on the center side of the back surface of the turning head plate 11, and the outer side thereof is A ring-shaped back pressure partition 21 is provided in the back pressure chamber 20 so as to apply an appropriate intermediate pressure between the discharge pressure and the suction pressure. Further, a spring member 23 that presses the back pressure partition band 21 against the back surface of the revolving end plate 11 is provided between the back pressure partition band 21 and a groove 22 formed in the bearing member 18. . The pressure of the back pressure chamber 20 is determined by minute holes and gaps communicating with the back pressure chamber 20. Refrigerant sucked from the suction pipe 26 of the compressor, enters the compression mechanism 2 from the suction inlet 27 of the compression mechanism 2, and is compressed and discharged in the compression work space 12 From the outlet 28, it enters the discharge space 29 provided in the lower part of the compression mechanism 2, passes through the discharge communication hole 30 penetrating the fixed frame 7 and the outer periphery of the bearing member 18, passes through the space in the sealed container, and It is discharged outside the compressor from 31. Next, the operation of the embodiment of the present invention will be described. The refrigerant sucked in from the suction port 27 of the compression mechanism 2 is sequentially compressed in the compression work space 12 and discharged from the discharge port 28. At this time, an axial thrust force is applied from the compression work space 12 to the turning head 11 of the turning scroll 9, so that the rear surface of the turning head 11 is pressed by the axial support 24 of the bearing member 18. Try to. However, the minute gap 19 on the back side of the revolving head plate 11 is partitioned by a back pressure partition band 21, the discharge pressure of the compressor mechanism 2 acts on the center side, and the discharge pressure and suction pressure on the outside. When an appropriate intermediate pressure acts, the axial thrust force applied from the compression working space 12 side is reduced, and the sliding loss of the bearing member 18 at the axial support portion 24 is reduced. In particular, immediately after startup or depending on operating conditions, the lubricating oil force of the pressure acting on the center of the back surface of the turning head plate 11 does not flow into the groove 22 formed in the bearing member 18 that accommodates this back pressure partitioning band 21, In the case where the pressure divider band 21 does not operate ^ As shown in Fig. 4, the back pressure divider band 21 is stably pressed by the spring member 23 against the back of the turning head plate 11, thereby turning. A force for reducing the axial thrust force applied from the compression work space 12 side always acts on the back surface of the end plate 11. FIG. 5 shows a second embodiment of the present invention. By providing a ring-shaped member 25 between the back pressure partitioning band 21 and the spring member 23, the spring member 23 is The force pressing the back pressure partition 21 acts uniformly. FIG. 6 shows a third embodiment of the present invention, in which a shaft accommodating the back pressure partition 21 is shown. By providing the step d between the inside and the outside of the groove 22 provided in the receiving member, lubricating oil can easily flow into this groove.
産業上の利用可能性 Industrial applicability
以上のよ う に本発明によれば 始動直後あるいは運転条件な どによ らずに背圧仕切帯は常にばね部材によ り旋回鏡板の背面 に押圧され 旋回鏡板の中心側に作用する圧縮機構の吐出圧力 と、 その外側に作用する吐出圧力と吸入圧力との間の適当な中 間の圧力とによ って、 旋回スク ロールの旋回鏡板に圧縮作業空 間か ら付加される軸方向ス ラ ス ト力を緩和 し 旋回鏡板平面で の摺動などによ る動力損失が低減し 圧縮機の効率が向上する。  As described above, according to the present invention, the back pressure partitioning band is always pressed against the back surface of the turning head plate by the spring member and acts on the center side of the turning head plate immediately after start-up or irrespective of operating conditions. The axial pressure added to the swivel head of the swivel scroll from the compression working space by the discharge pressure of the air and the appropriate intermediate pressure between the discharge pressure and the suction pressure acting on the outside. Alleviates the lasting force, reduces power loss due to sliding on the plane of the revolving head, and improves the efficiency of the compressor.
ま た、 ばね部材が背圧仕切帯を押圧する力が均一であ る ので、 よ り前記効果が得られる。  Further, since the force of the spring member pressing the back pressure partition band is uniform, the above-mentioned effect is further obtained.

Claims

求 の 範 囲 Range of request
1. スク ロール圧縮機を、 固定枠体の上に形成した固定スク ロ ールと、 こ の固定スク ロールと互いに嚙み合わせて複数個の圧 縮空間を形成するよ う に配設した旋回ス ク ロールと、 こ の旋回 スク ロールの自転を防止するためのオルダム リ ングと、 旋回ス ク ロ ールを偏心旋回駆動する ク ラ ンク軸と、 こ のク ラ ンク軸の 一端を支承する主軸受とで構成し 前記固定枠体の周辺平面と 前記旋回ス ク ロ ー ルの旋回鏡板の周辺平面とを摺動自在に当接 させる と と もに 前記旋回鏡板の背面に微小空隙を介して軸方 向支持部を設け、 前記旋回鏡板の背面の中心側に圧縮機構の吐 出圧力が作用 し その外側に吐出圧力と吸入圧力との間の適当 な中間の圧力が作用する よ う に前記空隙を摺動自在に密封して 仕切る背圧仕切帯と、 こ の背圧仕切帯を前記旋回鏡板の背面に 押圧するばね部材とを設けたス ク ロール圧縮  1. A scroll compressor is provided with a fixed scroll formed on a fixed frame and a swivel arranged so as to form a plurality of compression spaces by interlocking with the fixed scroll. Scroll, Oldham ring to prevent rotation of this scroll scroll, crank shaft for eccentric rotation drive of the scroll scroll, and one end of this crank shaft A main bearing and a peripheral plane of the fixed frame body and a peripheral plane of the revolving head plate of the revolving scroll are slidably contacted with each other, and a small gap is provided on the back surface of the revolving head plate. An axial support portion is provided so that the discharge pressure of the compression mechanism acts on the center side of the back surface of the revolving head plate, and an appropriate intermediate pressure between the discharge pressure and the suction pressure acts on the outside thereof. A back pressure divider band that slidably seals and separates the gap; Scrolls compression provided with a spring member for pressing the back pressure specifications Setsutai on a back surface of the orbiting end plate
2. 背圧仕切帯と、 これを押圧するばね部材との間に リ ング状 の部材を設けた請求項 1 記載のスク 口 ール圧縮 &  2. The scroll compression & compression method according to claim 1, wherein a ring-shaped member is provided between the back pressure partition band and a spring member pressing the back pressure partition band.
3. 背圧仕切帯を収容する軸受部材に形成された溝の内側と外 側の前記微小空隙で段差を設けた請求項 1 または 2 記載のス ク ロール圧縮  3. The scroll compression according to claim 1, wherein a step is provided between the minute gaps inside and outside the groove formed in the bearing member that houses the back pressure partition band.
PCT/JP1990/001421 1989-11-02 1990-11-02 Scroll compressor WO1991006773A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910700686A KR920701685A (en) 1989-11-02 1990-11-02 Shroul Compressor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1287019A JPH03149382A (en) 1989-11-02 1989-11-02 Scroll compressor
JP1/287019 1989-11-02

Publications (1)

Publication Number Publication Date
WO1991006773A1 true WO1991006773A1 (en) 1991-05-16

Family

ID=17711986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/001421 WO1991006773A1 (en) 1989-11-02 1990-11-02 Scroll compressor

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JP (1) JPH03149382A (en)
KR (1) KR920701685A (en)
DE (1) DE4092013T1 (en)
WO (1) WO1991006773A1 (en)

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JP3338886B2 (en) * 1994-08-22 2002-10-28 松下電器産業株式会社 Hermetic electric scroll compressor
JP3608268B2 (en) * 1995-10-23 2005-01-05 松下電器産業株式会社 Scroll compressor
JP5494136B2 (en) * 2010-03-31 2014-05-14 ダイキン工業株式会社 Rotary compressor
CN113090527A (en) * 2021-04-19 2021-07-09 重庆超力高科技股份有限公司 Backpressure cavity seal structure, compressor and on-vehicle air conditioning system

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JPS5564180A (en) * 1978-11-08 1980-05-14 Hitachi Ltd Scroll fluid machine
JPS58110885A (en) * 1981-12-25 1983-07-01 Hitachi Ltd Scroll fluid machine
JPH01177482A (en) * 1987-12-28 1989-07-13 Matsushita Electric Ind Co Ltd Scroll compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101319672B (en) * 2007-06-06 2011-10-12 日立空调·家用电器株式会社 Cyclone compressor

Also Published As

Publication number Publication date
JPH03149382A (en) 1991-06-25
DE4092013T1 (en) 1991-10-10
KR920701685A (en) 1992-08-12

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