JPH0942176A - Scroll compressor - Google Patents

Scroll compressor

Info

Publication number
JPH0942176A
JPH0942176A JP7211325A JP21132595A JPH0942176A JP H0942176 A JPH0942176 A JP H0942176A JP 7211325 A JP7211325 A JP 7211325A JP 21132595 A JP21132595 A JP 21132595A JP H0942176 A JPH0942176 A JP H0942176A
Authority
JP
Japan
Prior art keywords
ring
end plate
shaped leg
scroll
fixed scroll
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP7211325A
Other languages
Japanese (ja)
Inventor
Kazuhide Watanabe
和英 渡辺
Takamasa Iio
孝征 飯尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP7211325A priority Critical patent/JPH0942176A/en
Publication of JPH0942176A publication Critical patent/JPH0942176A/en
Pending legal-status Critical Current

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

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To lessen gas pressure acting on the end plate of a fixed scroll by providing a ring-shaped leg part on the outer face side of the end plate of the fixed scroll, and abutting the tip face of the ring-shaped leg part on the inside of the housing end part to turn the inner peripheral side of the ring- shaped leg part into a high pressure side and its outer peripheral side into a low pressure side. SOLUTION: A ring-shaped leg part 60 concentric with the center of an end plate 11 is provided on the outside of the end plate 11 of a fixed scroll 1, and the tip of the ring-shaped leg part 60 is sealedly abutted on the inner end face of a left housing 43 through a sealing member 61. The outer peripheral side of the ring-shaped leg part 60 is made to communicated with a low pressure intake chamber 47 by forming a groove 39 or the like to turn the outer peripheral side into a low pressure side 62.n addition to that, the inner peripheral side of the ring-shaped leg part 60 is made to communicate with a discharge port 13 for turning it into a high pressure side 63. Thus an area where high pressure gas acts on the outer face of the end plate 11 of the fixed scroll 1 lessens, and the deformation of the end plate 11 therefore becomes extremely narrow.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は空気調和機等に組み
込まれるスクロール型圧縮機に関する。
TECHNICAL FIELD The present invention relates to a scroll compressor incorporated in an air conditioner or the like.

【0002】[0002]

【従来の技術】従来のスクロール型圧縮機の1例が図2
に示されている。図2において、4はハウジングで、カ
ップ状右ハウジング49と、フレーム5と、カップ状左ハ
ウジング43とからなり、これらはボルト56によって互い
に締結されている。右ハウジング49の内部には電動モー
タMが配設され、左ハウジング43の内部にはスクロール
型圧縮機構Cがそれぞれ配設されている。
2. Description of the Related Art One example of a conventional scroll compressor is shown in FIG.
Is shown in In FIG. 2, reference numeral 4 denotes a housing, which includes a cup-shaped right housing 49, a frame 5, and a cup-shaped left housing 43, which are fastened together by bolts 56. An electric motor M is provided inside the right housing 49, and a scroll compression mechanism C is provided inside the left housing 43.

【0003】電動モータMとスクロール型圧縮機構Cは
回転シヤフト3を介して互いに連動連結されている。回
転シヤフト3の右端はサブベアリング51を介して右ハウ
ジング49に軸承され、左端はメインベアリング52を介し
てフレーム5に回転自在に軸承されている。そして、こ
の回転シヤフト3の左端部にはバランスウェイト35が設
けられている。
The electric motor M and the scroll type compression mechanism C are interlockingly connected to each other via a rotary shaft 3. The right end of the rotary shaft 3 is supported by the right housing 49 via a sub-bearing 51, and the left end is rotatably supported by the frame 5 via a main bearing 52. A balance weight 35 is provided at the left end of the rotary shaft 3.

【0004】電動モータMはロータMa とステータMb
からなり、ロータMa は回転シヤフト3に固定され、ス
テータMb は右ハウジング49に圧入することによって固
定されている。
The electric motor M includes a rotor Ma and a stator Mb.
The rotor Ma is fixed to the rotary shaft 3 and the stator Mb is fixed to the right housing 49 by press fitting.

【0005】スクロール型圧縮機構Cは固定スクロール
1、旋回スクロール2等からなる。
The scroll type compression mechanism C comprises a fixed scroll 1, an orbiting scroll 2 and the like.

【0006】固定スクロール1は端板11とその内面に立
設されたうず巻状ラップ12とを備え、この端板11の外周
面を左ハウジング43の内周面に密接させることによって
端板11の左側には吐出室46が形成され、右側には吸入室
47が限界されている。端板11の中央には吐出ポート13が
穿設され、この吐出ポート13は吐出弁17によって開閉さ
れるようになっている。この吐出弁17は弁押さえ18と共
にボルト19によって端板11に締結されている。
The fixed scroll 1 comprises an end plate 11 and a spiral wrap 12 provided upright on the inner surface of the end plate 11. The outer peripheral surface of the end plate 11 is brought into close contact with the inner peripheral surface of the left housing 43 to bring the end plate 11 into contact. A discharge chamber 46 is formed on the left side of the
47 is limited. A discharge port 13 is formed at the center of the end plate 11, and the discharge port 13 is opened and closed by a discharge valve 17. The discharge valve 17 is fastened to the end plate 11 by a bolt 19 together with a valve retainer 18.

【0007】端板11の内面の外周縁には円周上に等間隔
を隔てて複数の脚15が右方に向かって突設され、これら
脚15の先端面とこれに対向するようにフレーム5に突設
された突起36の先端面との間にシム37を介装し、フレー
ム5を貫通するボルト64を脚15に螺入することによって
固定スクロール1はフレーム5に固定されている。
On the outer peripheral edge of the inner surface of the end plate 11, a plurality of legs 15 are provided on the circumference at equal intervals so as to project rightward. The fixed scroll 1 is fixed to the frame 5 by interposing a shim 37 between it and the tip surface of the protrusion 36 projecting from the projection 5, and screwing a bolt 64 penetrating the frame 5 into the leg 15.

【0008】旋回スクロール2は端板21とこの内面に立
設されたうず巻状ラップ22とを備え、この端板21の外面
に立設されたボス23内にはドライブブッシュ32が旋回軸
受34を介して回転自在に嵌装されている。このドライブ
ブッシュ32に穿設されたスライド溝33内には回転シヤフ
ト3の左端に偏心して突設された偏心駆動ピン31がスラ
イド可能に嵌合されている。
The orbiting scroll 2 is provided with an end plate 21 and a spiral wrap 22 erected on the inner surface of the end plate 21, and a drive bush 32 is provided in an orbiting bearing 34 in a boss 23 erected on the outer surface of the end plate 21. It is rotatably fitted through. An eccentric drive pin 31 eccentrically provided at the left end of the rotary shaft 3 is slidably fitted in a slide groove 33 formed in the drive bush 32.

【0009】端板21とフレーム5との間にオルダムリン
ク等からなる自転阻止機構6が介装され、端板21の外面
はスラストベアリング53を介してフレーム5の左端面と
摺接するようになっている。
A rotation prevention mechanism 6 such as an Oldham link is interposed between the end plate 21 and the frame 5, and the outer surface of the end plate 21 is in sliding contact with the left end surface of the frame 5 via a thrust bearing 53. ing.

【0010】固定スクロール1と旋回スクロール2とを
相互に所定距離だけ偏心させ、かつ、180 度だけ角度を
ずらせて噛合させることによって複数個の密閉空間24が
形成されている。
A plurality of closed spaces 24 are formed by eccentric the fixed scroll 1 and the orbiting scroll 2 with respect to each other by a predetermined distance and meshing them by shifting the angle by 180 degrees.

【0011】電動モータMを駆動することによって、回
転シヤフト3、偏心駆動ピン31、ドライブブッシュ32、
旋回軸受34、ボス23等からなる旋回駆動機構を介して旋
回スクロール2が駆動され、旋回スクロール2は自転阻
止機構6によって自転を阻止されながら公転旋回半径の
円軌道上を公転旋回運動する。
By driving the electric motor M, the rotary shaft 3, the eccentric drive pin 31, the drive bush 32,
The orbiting scroll 2 is driven via an orbiting drive mechanism including an orbiting bearing 34, a boss 23, and the like, and the orbiting scroll 2 revolves on a circular orbit of an orbiting radius while being prevented from rotating by a rotation preventing mechanism 6.

【0012】すると、ガスが吸入口44を経て低圧室48に
入り、このガスはステータMb の外周に設けられた通路
58及びステータMb とロータMa との間隙59を通る過程
で電動モータMを冷却した後、フレーム5に設けられた
通路54、吸入室47を経て、密閉空間24内に吸入される。
Then, the gas enters the low pressure chamber 48 through the suction port 44, and this gas is passed through the passage provided on the outer periphery of the stator Mb.
After cooling the electric motor M while passing through the gap 59 between the stator 58 and the stator Ma and the rotor Ma, the electric motor M is sucked into the closed space 24 through the passage 54 and the suction chamber 47 provided in the frame 5.

【0013】そして、旋回スクロール2の公転旋回運動
により密閉空間24の容積が減少するのに伴って圧縮され
ながら中央部に至り、中央部から吐出ポート13を通り、
吐出弁17を押し開いて吐出室46内へ吐出され、ここから
吐出口45を経て外部に流出する。
As the volume of the closed space 24 decreases due to the orbiting motion of the orbiting scroll 2, the compressed space reaches the central portion while being compressed, and passes through the discharge port 13 from the central portion.
The discharge valve 17 is pushed open to be discharged into the discharge chamber 46, and then discharged to the outside through the discharge port 45.

【0014】[0014]

【発明が解決しようとする課題】上記従来のスクロール
圧縮機においては、その運転時、固定スクロール1の端
板11の外面にはその全面に亘って吐出室46内の高圧が作
用する。すると、固定スクロール1の端板11の変形( 中
央部が左方に膨出して皿状となる) が大きくなり、これ
に伴ってうず巻状ラップ12、22の先端面が端板21、11の
内面に噛み込んだり、これらの間の間隙、即ち、チップ
隙間からのガス洩れが増大する等の不具合があった。
In the conventional scroll compressor described above, the high pressure in the discharge chamber 46 acts on the entire outer surface of the end plate 11 of the fixed scroll 1 during its operation. Then, the deformation of the end plate 11 of the fixed scroll 1 (the central portion bulges leftward to form a dish) becomes larger, and the tip end faces of the spiral wraps 12 and 22 are accompanied by the deformation. There were problems such as being caught in the inner surface of the, and increasing gas leakage from the gap between them, that is, the chip gap.

【0015】[0015]

【課題を解決するための手段】本発明は上記課題を解決
するために発明されたものであって、その要旨とすると
ころは、固定スクロールとこれに噛み合う旋回スクロー
ルよりなるスクロール型圧縮機構をハウジング内に収容
設置し、上記固定スクロールを上記ハウジング内に固定
されたフレームに固定してなるスクロール圧縮機におい
て、上記固定スクロールの端板の外面側にリング状脚部
を設け、このリング状脚部の先端面を上記ハウジングの
端部内面に当接させることによって上記リング状脚部の
内周側を高圧側、外周側を低圧側としたことを特徴とす
るスクロール圧縮機にある。
SUMMARY OF THE INVENTION The present invention has been invented to solve the above-mentioned problems, and its gist is to provide a scroll type compression mechanism comprising a fixed scroll and an orbiting scroll meshing with the fixed scroll with a housing. A scroll compressor which is housed and installed in a fixed scroll and fixed to a frame fixed in the housing, wherein a ring-shaped leg portion is provided on an outer surface side of an end plate of the fixed scroll, and the ring-shaped leg portion is provided. The scroll compressor is characterized in that the inner peripheral side of the ring-shaped leg portion is set to the high pressure side and the outer peripheral side thereof is set to the low pressure side by bringing the tip end surface of the ring into contact with the inner surface of the end portion of the housing.

【0016】他の特徴とするところは、上記リング状脚
部の先端面にシール部材を設けたことにある。
Another feature is that a seal member is provided on the tip surface of the ring-shaped leg portion.

【0017】更に他の特徴とするところは、上記リング
状脚部を固定スクロールの端板の中心と同心状に形成し
たことにある。
Still another feature is that the ring-shaped leg portion is formed concentrically with the center of the end plate of the fixed scroll.

【0018】しかして、固定スクロールの端板外面の中
央部には高圧側の高圧が作用し、外周部には低圧側の低
圧が作用するので、端板の変形が小さくなる。
Since the high pressure on the high pressure side acts on the central portion of the outer surface of the end plate of the fixed scroll and the low pressure on the low pressure side acts on the outer peripheral portion, the deformation of the end plate is reduced.

【0019】[0019]

【発明の実施の形態】本発明の1実施形態が図1に示さ
れ、(A) は(B) のA−A線に沿う部分的横面図、(B) は
(A) のB矢に沿う横断面図である。図1(A) 、(B) に示
すように、固定スクロール1の端板11の外面には端板11
の中心と同心のリング状脚部60が設けられ、このリング
状脚部60の先端はシール部材61を介して左ハウジング43
の内端面に封密的に当接せしめられている。
BEST MODE FOR CARRYING OUT THE INVENTION One embodiment of the present invention is shown in FIG. 1, where (A) is a partial lateral view taken along the line AA of (B), and (B) is
It is a cross-sectional view taken along the arrow B of (A). As shown in FIGS. 1 (A) and 1 (B), the end plate 11 of the fixed scroll 1 is attached to the outer surface of the end plate 11.
A ring-shaped leg portion 60 concentric with the center of the ring-shaped leg portion 60 is provided.
Is tightly abutted against the inner end surface of the.

【0020】そして、端板11の外周面に配設されたシー
ル部材を省略し又は端板11の外周面又は外周縁に切り欠
き又は溝39を形成してリング状脚部60の外周側を低圧の
吸入室47と連通させることにより低圧側62とし、かつ、
リング状脚部60の内周側を吐出ポート13と連通させるこ
とにより高圧側63としている。他の構成は図2に示す従
来のものと同様であり、対応する部材には同じ符号を付
してその説明を省略する。
The sealing member disposed on the outer peripheral surface of the end plate 11 is omitted, or a notch or groove 39 is formed on the outer peripheral surface or the outer peripheral edge of the end plate 11 so that the outer peripheral side of the ring-shaped leg portion 60 is formed. The low pressure side 62 is established by communicating with the low pressure suction chamber 47, and
The inner peripheral side of the ring-shaped leg portion 60 is connected to the discharge port 13 to form the high pressure side 63. The other configuration is the same as that of the conventional one shown in FIG. 2, and the corresponding members are denoted by the same reference numerals and description thereof will be omitted.

【0021】しかして、スクロール圧縮機の運転時、旋
回スクロール2の公転旋回運動により圧縮室24で圧縮さ
れたガスは吐出ポート13から吐出弁17を押し開いて高圧
側63に吐出され、ここから吐出口45を経て外部に流出す
る。
During operation of the scroll compressor, however, the gas compressed in the compression chamber 24 by the orbiting motion of the orbiting scroll 2 is discharged from the discharge port 13 to the high pressure side 63 by pushing the discharge valve 17 open. It flows out through the outlet 45.

【0022】高圧側63はリング状脚部60の内周側に限界
され、リング状脚部60の外周側は低圧側62とされている
ので、高圧ガスが固定スクロール1の端板11の外面に作
用する面積は少なくなり、従って、端板11の変形は従来
のものに比し格段に少なくなる。
The high-pressure side 63 is limited to the inner peripheral side of the ring-shaped leg 60, and the outer peripheral side of the ring-shaped leg 60 is the low-pressure side 62, so that the high-pressure gas is the outer surface of the end plate 11 of the fixed scroll 1. Therefore, the deformation of the end plate 11 is remarkably reduced as compared with the conventional one.

【0023】この結果、うず巻状ラップ12、22が端板2
1、11の内面に噛み込んだり、チップ隙間が過大となる
のを防止しうるので、スクロール圧縮機の信頼性を向上
しうるとともにその性能低下を防止できる。
As a result, the spiral wraps 12 and 22 are attached to the end plate 2.
It is possible to prevent biting into the inner surfaces of 1 and 11 and to prevent the tip gap from becoming excessively large, so that it is possible to improve the reliability of the scroll compressor and prevent its performance from deteriorating.

【0024】[0024]

【発明の効果】本発明においては、固定スクロールの端
板の外面側にリング状脚部を設け、このリング状脚部の
先端面をハウジングの端部内面に当接させることによっ
てリング状脚部の内周側を高圧側、外周側を低圧側とし
たため、固定スクロールの端板に作用するガス圧力を従
来ののもに比し小さくすることができる。
According to the present invention, the ring-shaped leg portion is provided on the outer surface side of the end plate of the fixed scroll, and the tip end surface of the ring-shaped leg portion is brought into contact with the inner surface of the end portion of the housing. Since the inner circumference side is the high pressure side and the outer circumference side is the low pressure side, the gas pressure acting on the end plate of the fixed scroll can be made smaller than that of the conventional one.

【0025】従って、固定スクロールの端板の変形を従
来のものに比し低減できるので、うず巻状ラップの噛み
込みやチップ隙間が過大となるので未然に防止すること
ができる。この結果、スクロール圧縮機の信頼性を向上
しうるとともにその性能の低下を防止できる。
Therefore, since the deformation of the end plate of the fixed scroll can be reduced as compared with the conventional one, the spiral wrap can be prevented from being caught and the tip gap becomes excessive. As a result, it is possible to improve the reliability of the scroll compressor and prevent the performance of the scroll compressor from decreasing.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の1実施形態を示し、(A) は(B) のA−
A線に沿う部分的縦断面図、(B) は(A) のB−B線に沿
う横断面図である。
FIG. 1 shows an embodiment of the present invention, wherein (A) is (A) of (B).
FIG. 3B is a partial vertical sectional view taken along the line A, and FIG. 6B is a lateral sectional view taken along the line BB of FIG.

【図2】従来のスクロール圧縮機の縦断面図である。FIG. 2 is a vertical sectional view of a conventional scroll compressor.

【符号の説明】[Explanation of symbols]

C スクロール型圧縮機構 1 固定スクロール 11 端板 2 旋回スクロール 4 ハウジング 5 フレーム 60 リング状脚部 61 シール部材 62 低圧側 63 高圧側 C scroll type compression mechanism 1 fixed scroll 11 end plate 2 orbiting scroll 4 housing 5 frame 60 ring-shaped leg 61 seal member 62 low pressure side 63 high pressure side

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 固定スクロールとこれに噛み合う旋回ス
クロールよりなるスクロール型圧縮機構をハウジング内
に収容設置し、上記固定スクロールを上記ハウジング内
に固定されたフレームに固定してなるスクロール圧縮機
において、 上記固定スクロールの端板の外面側にリング状脚部を設
け、このリング状脚部の先端面を上記ハウジングの端部
内面に当接させることによって上記リング状脚部の内周
側を高圧側、外周側を低圧側としたことを特徴とするス
クロール圧縮機。
1. A scroll compressor in which a scroll type compression mechanism comprising a fixed scroll and an orbiting scroll meshing with the fixed scroll is housed and installed in a housing, and the fixed scroll is fixed to a frame fixed in the housing. A ring-shaped leg portion is provided on the outer surface side of the end plate of the fixed scroll, and the inner peripheral side of the ring-shaped leg portion is attached to the high pressure side by bringing the tip end surface of the ring-shaped leg portion into contact with the inner surface of the end portion of the housing. A scroll compressor characterized in that the outer peripheral side is a low pressure side.
【請求項2】 上記リング状脚部の先端面にシール部材
を設けたことを特徴とする請求項1記載のスクロール圧
縮機。
2. The scroll compressor according to claim 1, wherein a seal member is provided on a tip end surface of the ring-shaped leg portion.
【請求項3】 上記リング状脚部を固定スクロールの端
板の中心と同心状に形成したことを特徴とする請求項1
記載のスクロール圧縮機。
3. The ring-shaped leg portion is formed concentrically with the center of the end plate of the fixed scroll.
The scroll compressor as described.
JP7211325A 1995-07-28 1995-07-28 Scroll compressor Pending JPH0942176A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7211325A JPH0942176A (en) 1995-07-28 1995-07-28 Scroll compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7211325A JPH0942176A (en) 1995-07-28 1995-07-28 Scroll compressor

Publications (1)

Publication Number Publication Date
JPH0942176A true JPH0942176A (en) 1997-02-10

Family

ID=16604092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7211325A Pending JPH0942176A (en) 1995-07-28 1995-07-28 Scroll compressor

Country Status (1)

Country Link
JP (1) JPH0942176A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581293A (en) * 1978-12-15 1980-06-19 Sanden Corp Positive-displacement fluid compressor
JPS59111983U (en) * 1983-12-07 1984-07-28 サンデン株式会社 Scroll compressor
JPS60175890U (en) * 1984-05-02 1985-11-21 三菱重工業株式会社 Scroll type fluid machine
JPH0219677A (en) * 1988-07-08 1990-01-23 Sanden Corp Scroll type fluid compressor
JPH05180175A (en) * 1992-01-07 1993-07-20 Mitsubishi Electric Corp Scroll compressor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581293A (en) * 1978-12-15 1980-06-19 Sanden Corp Positive-displacement fluid compressor
JPS59111983U (en) * 1983-12-07 1984-07-28 サンデン株式会社 Scroll compressor
JPS60175890U (en) * 1984-05-02 1985-11-21 三菱重工業株式会社 Scroll type fluid machine
JPH0219677A (en) * 1988-07-08 1990-01-23 Sanden Corp Scroll type fluid compressor
JPH05180175A (en) * 1992-01-07 1993-07-20 Mitsubishi Electric Corp Scroll compressor

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