JPH02308997A - Noise suppressor for rotary compressor - Google Patents

Noise suppressor for rotary compressor

Info

Publication number
JPH02308997A
JPH02308997A JP13205889A JP13205889A JPH02308997A JP H02308997 A JPH02308997 A JP H02308997A JP 13205889 A JP13205889 A JP 13205889A JP 13205889 A JP13205889 A JP 13205889A JP H02308997 A JPH02308997 A JP H02308997A
Authority
JP
Japan
Prior art keywords
cylinder
small space
pressure chamber
vane
low pressure
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.)
Granted
Application number
JP13205889A
Other languages
Japanese (ja)
Other versions
JPH0726633B2 (en
Inventor
Masayuki Hara
正之 原
Toshiyuki Ebara
俊行 江原
Yasunori Kiyokawa
保則 清川
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP1132058A priority Critical patent/JPH0726633B2/en
Publication of JPH02308997A publication Critical patent/JPH02308997A/en
Publication of JPH0726633B2 publication Critical patent/JPH0726633B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE:To eliminate the disturbance of intake by providing a space opened in the cylinder of a rotary compressor provided with a vane for separating the cylinder into a low pressure and a high pressure, and placing an opening at a rotational angle of 180 degree from an intake port as a relatively low pressure portion. CONSTITUTION:A rotary compression element 4 in a closed vessel 1 is provided with a roller 7 which is fitted to the eccentric portion 6 of a rotary shaft and which is rotated in a cylinder and a vane 10 which separates the cylinder into a low pressure chamber 5 and a high pressure chamber 8. The upper bearing portion of the cylinder 5 is sinked to provide a small space 19 and the small space is opened in the cylinder within the rotational angle of 180 degree from an intake port 17 as a vane 10 is a point of origin. The small space 19 is opened on the way of a compression stroke to dampen the pulsation of pressure to reduce the level of pressure waves discharged. Relatively low pressure fluid at the first half of a compression stroke is remained in the small space 19 so that a backward flow to an intake stroke is little and flow-in from an intake port 17 is not disturbed.

Description

【発明の詳細な説明】 (り産業上の利用分腎 この発明は回転圧縮機に係り、特にシリンダ内で発生す
る圧力脈動による騒音を低減するものに関する。
DETAILED DESCRIPTION OF THE INVENTION This invention relates to a rotary compressor, and more particularly to one that reduces noise caused by pressure pulsations occurring within a cylinder.

(ロ)従来の技術 従来の回転圧縮機は例えば実開昭60−32585号公
報に示されているように構成されている。ここで、この
公報を参考に従来例を説明する。第6図乃至第8図にお
いて、50は密閉容器で、この密閉容器内には電動要素
51が上側に、回転圧縮要素52が下側に夫々収納され
ている。
(B) Prior Art A conventional rotary compressor is constructed as shown in, for example, Japanese Utility Model Application No. 60-32585. Here, a conventional example will be explained with reference to this publication. In FIGS. 6 to 8, reference numeral 50 denotes a closed container, in which an electric element 51 is housed on the upper side, and a rotary compression element 52 is housed on the lower side.

回転圧縮要素52はシリンダ53と、回転軸54の偏心
部55によりシリンダ53内を回転するローラ56と、
このローラに接してシリンダ53内を高圧室57と低圧
室58とに区画するベーン59と、シリンダ53の開口
を封じる上軸受部60と下軸受部61とで構成されてい
る。62は吸込ポートで、この吸込ポートはシリンダ5
3の個壁に設けられている。63は吐出ポートで、この
吐出ポートは下軸受部61に設けられている。吐出ポー
ト63の出口側には吐出弁64が配設されている。65
は下軸受部61の表面を覆う吐出マフラ体で、その内部
に吐出マフラ室66を形成している。67は上軸受部6
0のシリンダ53に接触する面倒に設けられた小空間で
、この小空間は導入路68を介してシリンダ53内に連
通している。しかも、導入路68はベーン59を基点と
して1806〜250″′の回転角の範囲内に設けられ
ている。
The rotary compression element 52 includes a cylinder 53, a roller 56 that rotates within the cylinder 53 by an eccentric portion 55 of a rotating shaft 54,
It is comprised of a vane 59 that comes into contact with this roller and divides the inside of the cylinder 53 into a high pressure chamber 57 and a low pressure chamber 58, and an upper bearing part 60 and a lower bearing part 61 that close the opening of the cylinder 53. 62 is a suction port, and this suction port is connected to cylinder 5.
It is installed on 3 individual walls. 63 is a discharge port, and this discharge port is provided in the lower bearing portion 61. A discharge valve 64 is disposed on the outlet side of the discharge port 63. 65
is a discharge muffler body that covers the surface of the lower bearing portion 61, and has a discharge muffler chamber 66 formed therein. 67 is the upper bearing part 6
This small space is conveniently provided in contact with the cylinder 53 of No. 0, and this small space communicates with the inside of the cylinder 53 via an introduction path 68. Moreover, the introduction path 68 is provided within a rotation angle range of 1806 to 250'' with the vane 59 as the base point.

この構造の回転圧縮機ではシリンダ53内に導入路68
を介して連通ずる小空間67によりこのシリンダ内で流
体を吸入・圧縮する際に発生する圧力脈動が減衰され、
回転圧縮機が圧力脈動で振動を起こさないようにしてい
る。
In a rotary compressor with this structure, an introduction passage 68 is provided in the cylinder 53.
The pressure pulsations that occur when fluid is sucked and compressed within this cylinder are attenuated by the small space 67 communicating through the cylinder.
This prevents the rotary compressor from vibrating due to pressure pulsations.

(ハ)発明が解決しようとする課題 しかしながら、導入路68はベーン59を基点として1
80°〜250°の回転角の範囲のシリンダ53内に開
口しているため、小空間67内に圧縮行程の後半の高圧
流体が残留し、吸入行程のシリンダ53内に小空間67
内の高圧流体が逆流してこのシリンダ内の低圧室58の
圧力を上昇させ、シリンダ53内に吸入ポート62から
流体が流入しずらくなり、冷凍能力を低下させる問題が
あった。
(c) Problems to be Solved by the Invention However, the introduction path 68 is one point with the vane 59 as the base point.
Since it opens into the cylinder 53 in the rotation angle range of 80° to 250°, high-pressure fluid from the latter half of the compression stroke remains in the small space 67, and the small space 67 remains inside the cylinder 53 during the suction stroke.
There is a problem in that the high-pressure fluid inside flows back and increases the pressure in the low-pressure chamber 58 within the cylinder, making it difficult for fluid to flow into the cylinder 53 from the suction port 62, reducing the refrigerating capacity.

この発明は上記の問題を解決するもので、シリンダ内で
発生する圧力脈動を減衰させる小空間内に残留する流体
で冷凍能力が低下しないようにした回転圧縮機の消音装
置を提供することを目的としたものである。
The present invention solves the above-mentioned problems, and aims to provide a muffling device for a rotary compressor that prevents the refrigerating capacity from decreasing due to fluid remaining in a small space that attenuates pressure pulsations occurring within a cylinder. That is.

(ニ)課題を解決するだめの手段 この発明は密閉容器内に回転軸を有する電動要素と、こ
の電動要素の回転軸によって駆動される回転圧縮要素と
を収納し、この圧縮要素を、シリンダと、回転軸の偏心
部と、この偏心部によってシリンダ内を回転するローラ
と、このローラに接してシリンダ内を低圧室と高圧室と
に区画するベーンと、シリンダの開口を封じる軸受部と
で構成し、前記軸受部に高圧室に連通ずる吐出ポートと
、この吐出ポートを開閉する吐出弁とを設け、かつ、シ
リンダに低圧室に連通ずる吸込ポートを設げ、前記シリ
ンダ内で圧縮された流体を吐出ポートから密閉容器内に
吐出するようにした回転圧縮機において、前記シリンダ
あるいは軸受部にシリンダ内に開口する空間を設け、こ
の空間を、ベーンを基点として吸入ポートから回転角1
80°までの範囲のシリンダ内に開口させたものである
(d) Means for Solving the Problems This invention houses an electric element having a rotating shaft in a closed container and a rotary compression element driven by the rotating shaft of the electric element, and connects this compression element to a cylinder. , consists of an eccentric part of the rotating shaft, a roller that rotates inside the cylinder by this eccentric part, a vane that comes into contact with the roller and divides the inside of the cylinder into a low pressure chamber and a high pressure chamber, and a bearing part that seals the opening of the cylinder. The bearing section is provided with a discharge port that communicates with the high pressure chamber and a discharge valve that opens and closes this discharge port, and the cylinder is provided with a suction port that communicates with the low pressure chamber, and the fluid compressed in the cylinder is provided with a suction port that communicates with the low pressure chamber. In a rotary compressor configured to discharge from a discharge port into a closed container, a space opening into the cylinder is provided in the cylinder or the bearing, and this space is opened at a rotation angle of 1 from the suction port with the vane as a reference point.
It has an opening in the cylinder with an angle of up to 80°.

(ホ)作用 この発明は上記のように構成したことにより、シリンダ
内で圧縮された流体に発生ずる圧力脈動を減衰させる空
間を圧縮行程の前半のシリンダ内に開口し、前記空間内
に残留する流体が吸入行程のシリンダ内に逆流しても低
圧圧力の上昇を抑えてこのシリンダ内に低温の流体が流
入しずらくならないようにしたものである。
(e) Operation By having the above-described structure, this invention opens a space in the cylinder in the first half of the compression stroke that dampens the pressure pulsations generated in the fluid compressed in the cylinder, and the fluid remains in the space. Even if fluid flows backward into the cylinder during the suction stroke, the rise in low-pressure pressure is suppressed to prevent low-temperature fluid from flowing into the cylinder.

くべ)実施例 以1この発明を第1図乃至第3図に示す実施例に基いて
説明する。
1) Embodiment 1 This invention will be explained based on the embodiment shown in FIGS. 1 to 3.

1は密閉容器で、この容器内には上側に回転軸2を有す
る電動要素3が、下側にこの電動要素の回転軸2によっ
て駆動される回転圧縮要素4が夫々収納されている。回
転圧縮要素4はシリンダ5と、回転軸2の偏心部6と、
この偏心部に嵌合わされてシリンダ5内を回転するロー
ラ7と、とのローラに接してシリンダ5内を低圧室8と
高圧室9とに区画するベーン10と、シリンダ5の開口
を封じる上軸受部11及び下軸受部12と、この上軸受
部の表面を覆うように取付けた吐出マフラ体13とによ
り構成されている。上軸受部11にはシリンダ5の高圧
室9と、吐出マフラ体13の内部に形成された吐出マフ
ラ室14とを連通ずる吐出ポート15が設げられている
。そして、この吐出ポートの出口側の上軸受部11には
吐出ポート15を開閉する吐出弁16が取付けられてい
る。17はシリンダ5に形成された吸込ポートで、この
吸込ポートは低圧室8に連通している。
Reference numeral 1 denotes a closed container, in which an electric element 3 having a rotating shaft 2 on the upper side and a rotary compression element 4 driven by the rotating shaft 2 of the electric element on the lower side are housed. The rotary compression element 4 includes a cylinder 5, an eccentric portion 6 of the rotating shaft 2,
A roller 7 that fits into the eccentric portion and rotates inside the cylinder 5; a vane 10 that contacts the rollers and divides the inside of the cylinder 5 into a low pressure chamber 8 and a high pressure chamber 9; and an upper bearing that closes the opening of the cylinder 5. 11, a lower bearing part 12, and a discharge muffler body 13 attached to cover the surface of the upper bearing part. The upper bearing portion 11 is provided with a discharge port 15 that communicates the high pressure chamber 9 of the cylinder 5 with a discharge muffler chamber 14 formed inside the discharge muffler body 13 . A discharge valve 16 for opening and closing the discharge port 15 is attached to the upper bearing portion 11 on the outlet side of the discharge port. 17 is a suction port formed in the cylinder 5, and this suction port communicates with the low pressure chamber 8.

18は吐出管で、この吐出管は密閉客器1の土壁に取付
けられている。
18 is a discharge pipe, and this discharge pipe is attached to the earthen wall of the closed container 1.

19はシリンダ5に設けた小空間で、この小空間はシリ
ンダ5の上軸受部11側の端面に凹みを設けて形成され
るとともに、ベーン10を基点として吸込ポート17か
ら180°の回転角の範囲のシリンダ5内に開口されて
いる。
Reference numeral 19 denotes a small space provided in the cylinder 5. This small space is formed by providing a recess in the end face of the cylinder 5 on the upper bearing portion 11 side. It opens into the cylinder 5 of the range.

このように構成された回転圧縮機の消音装置におい−C
1吸込ポート17からシリンダ5内に流入した流体はロ
ーラ7とベーン10との協働によって圧縮され、吐出ポ
ート15から吐出弁16を開放して吐出マフラ体13の
吐出マフラ室14に吐出される。そして、この吐出マフ
ラ体内の流イ本は密閉客器1内を介して吐出管18から
外部冷却回路(図示せず)へ吐出される。
In the muffler for a rotary compressor constructed in this way-C
1. Fluid flowing into the cylinder 5 from the suction port 17 is compressed by the cooperation of the rollers 7 and the vanes 10, and is discharged from the discharge port 15 into the discharge muffler chamber 14 of the discharge muffler body 13 by opening the discharge valve 16. . The fluid in the discharge muffler body is then discharged from the discharge pipe 18 to an external cooling circuit (not shown) through the closed passenger unit 1.

シリンダ5に設けた小空間19は圧縮途中のシリンダ5
内に開口+dせることにより、圧縮行程の流体の圧力脈
動成分を吸収して減衰し、吐出ポート15から吐出マフ
ラ室14へ吐出される流体の圧力波のレベルを低減して
いる。しかも、小空間19はベーン10を基点として吸
込ポート17から180°の回転角の範囲のシリンダ5
内に開口きれることにより、圧縮行程前半の圧力の比較
的低い流体が小空間19内に残留し、吸入行程の低圧室
8に小空間19から逆流する実質的な流体の量を少なく
している。そのため、吸入行程のシリンダ5内の低圧室
8の流体は小空間19から逆流する流体でほとんど圧力
上昇することがなく、シリンダ5内に吸込ポート17か
ら流体が流入しすらくならないようにされている。
The small space 19 provided in the cylinder 5 is the cylinder 5 in the middle of compression.
By providing an opening +d inside, pressure pulsation components of the fluid in the compression stroke are absorbed and attenuated, and the level of pressure waves of the fluid discharged from the discharge port 15 to the discharge muffler chamber 14 is reduced. Moreover, the small space 19 is located within the cylinder 5 within a rotation angle range of 180° from the suction port 17 with the vane 10 as the base point.
By opening inward, fluid with a relatively low pressure in the first half of the compression stroke remains in the small space 19, and the substantial amount of fluid flowing back from the small space 19 into the low pressure chamber 8 in the suction stroke is reduced. . Therefore, the pressure of the fluid in the low pressure chamber 8 in the cylinder 5 during the suction stroke hardly increases due to the fluid flowing back from the small space 19, and the fluid is prevented from flowing into the cylinder 5 from the suction port 17. There is.

また、小空間19はシリンダ5内の高圧室9の有効容積
に比べ極めて/、11さい容積にすることにより、圧縮
機の冷凍壕力の低下を抑えられるようにしている。
Further, by making the volume of the small space 19 extremely small by 11 times compared to the effective volume of the high pressure chamber 9 in the cylinder 5, it is possible to suppress a decrease in the refrigerating force of the compressor.

したがって、この発明は圧縮行程前半のシリンダ5内に
連通ずる小空間19を設けることにより、圧力脈動を吸
収して外部に生じる騒音を低減するとともに、小空間1
9内に残留する流体による冷凍能力の低下も防止できる
ようにしたものである。
Therefore, by providing a small space 19 that communicates with the cylinder 5 in the first half of the compression stroke, the present invention absorbs pressure pulsations and reduces noise generated outside.
It is also possible to prevent a decrease in the refrigerating capacity due to fluid remaining in the refrigeration chamber 9.

尚、上記説明においては、ノ」\空間19を上軸受部1
1側のシリンダ5の端面に設けて説明したが、第4図の
ようにシリンダ5の中央に穴をあけ−C小空間20を形
成しても、また、第5図のようにシリンダ5に接触する
上軸受部11の接触面に切欠いて小空間21を形成して
もよいことは言うまでもない。更に、小空間は圧縮行程
の前半のシリンダ内に連通していれば、どのような形状
、位置でもよいことは言うまでもない。
In the above description, the space 19 is referred to as the upper bearing part 1.
Although the explanation has been given by providing a hole in the end face of the cylinder 5 on the first side, even if a hole is made in the center of the cylinder 5 as shown in FIG. It goes without saying that the small space 21 may be formed by cutting out the contact surface of the upper bearing part 11 that comes in contact with the upper bearing part 11 . Furthermore, it goes without saying that the small space may have any shape or position as long as it communicates with the inside of the cylinder in the first half of the compression stroke.

〈ト)発明の効果 以上のようにこの発明によれば、シリンダ内で圧縮行程
時の圧力脈動を減衰する小空間をベーンを基点として吸
込ポートから180°の回転角のシリンダ内に開口させ
るように設けたのであるから、前記小空間内に残留する
流体の圧力を低くし、冷凍能力の低下を防止できるとと
もに、小空間内に残留した流体での吸入行程の低圧室の
圧力の上昇を防止し、低圧室に吸込ポートから流入する
流体が阻止されて低温の流体の供給不足を防止できるよ
うにしたものである。
(g) Effects of the Invention As described above, according to the present invention, a small space that damps pressure pulsations during the compression stroke in the cylinder is opened into the cylinder at a rotation angle of 180° from the suction port with the vane as the base point. Therefore, it is possible to lower the pressure of the fluid remaining in the small space and prevent a decrease in the refrigerating capacity, and also prevent the fluid remaining in the small space from increasing the pressure in the low pressure chamber during the suction stroke. However, fluid flowing into the low-pressure chamber from the suction port is blocked, thereby preventing insufficient supply of low-temperature fluid.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例を示す回転圧縮機の縦断面
図、第2図は同じく第1図のA−A線断面図、第3図は
同じくシリンダに設けた空間を示す要部拡大断面図、第
4図は他の実施例を示すシリンダに設けた空間の要部拡
大断面図、第5図はその他の実施例を示すシリンダに設
けた空間の要部拡大断面図、第6図は従来例を示す回転
圧縮機の縦断面図、第7図は同じく第6図のB−B線断
面図、第8図は同じく共鳴室を示す要部拡大断面図であ
る。 1・・・密閉容器、 2・・・回転軸、 3・・・電動
要素、4・・・回転圧縮要素、 5・・・シリンダ、 
 6・・・偏心部、 7・・・ローラ、 8・・・低圧
室、 9・・・高圧室、10・・・ベーン、  11・
・・上軸受部、  12・・・下軸受部、  15・・
・吐出ボー1−1 16・・・吐出弁、17・・・吸込
ポート、  19,20,21・・・小空間。
Fig. 1 is a longitudinal sectional view of a rotary compressor showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a main part showing the space provided in the cylinder. 4 is an enlarged sectional view of a main part of a space provided in a cylinder showing another embodiment; FIG. 5 is an enlarged sectional view of a main part of a space provided in a cylinder showing another embodiment; FIG. The figure is a longitudinal cross-sectional view of a rotary compressor showing a conventional example, FIG. 7 is a cross-sectional view taken along the line B--B of FIG. 6, and FIG. DESCRIPTION OF SYMBOLS 1... Airtight container, 2... Rotating shaft, 3... Electric element, 4... Rotating compression element, 5... Cylinder,
6... Eccentric part, 7... Roller, 8... Low pressure chamber, 9... High pressure chamber, 10... Vane, 11.
...Upper bearing part, 12...Lower bearing part, 15...
・Discharge bow 1-1 16...Discharge valve, 17...Suction port, 19, 20, 21...Small space.

Claims (1)

【特許請求の範囲】[Claims] 1、密閉容器内に回転軸を有する電動要素と、この電動
要素の回転軸によって駆動される回転圧縮要素とを収納
し、この圧縮要素はシリンダと、回転軸の偏心部と、こ
の偏心部によってシリンダ内を回転するローラと、この
ローラに接してシリンダ内を低圧室と高圧室とに区画す
るベーンと、シリンダの開口を封じる軸受部とを有する
ようにし、前記軸受部には高圧室に連通する吐出ポート
と、この吐出ポートを開閉する吐出弁とが設けられ、か
つ、シリンダには低圧室に連通する吸込ポートが設けら
れ、前記シリンダ内で圧縮された流体を吐出ポートから
密閉容器内に吐出するようにした回転圧縮機において、
前記シリンダあるいは軸受部にはシリンダ内に開口する
空間が設けられ、この空間はベーンを基点として吸込ポ
ートから回転角180°までの範囲のシリンダ内に開口
させたことを特徴とする回転圧縮機の消音装置。
1. An electric element having a rotating shaft and a rotary compression element driven by the rotating shaft of this electric element are housed in a closed container, and this compression element has a cylinder, an eccentric part of the rotating shaft, and a rotary compression element driven by the eccentric part. The cylinder has a roller that rotates inside the cylinder, a vane that comes into contact with the roller and divides the inside of the cylinder into a low-pressure chamber and a high-pressure chamber, and a bearing that closes an opening of the cylinder, and the bearing is connected to the high-pressure chamber. The cylinder is provided with a discharge port that opens and closes the discharge port, and a suction port that communicates with a low pressure chamber. In a rotary compressor that discharges
A rotary compressor characterized in that the cylinder or the bearing part is provided with a space that opens into the cylinder, and this space opens into the cylinder in a range from the suction port to a rotation angle of 180 degrees with the vane as the base point. Silencer.
JP1132058A 1989-05-25 1989-05-25 Silencer for rotary compressor Expired - Lifetime JPH0726633B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1132058A JPH0726633B2 (en) 1989-05-25 1989-05-25 Silencer for rotary compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1132058A JPH0726633B2 (en) 1989-05-25 1989-05-25 Silencer for rotary compressor

Publications (2)

Publication Number Publication Date
JPH02308997A true JPH02308997A (en) 1990-12-21
JPH0726633B2 JPH0726633B2 (en) 1995-03-29

Family

ID=15072532

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1132058A Expired - Lifetime JPH0726633B2 (en) 1989-05-25 1989-05-25 Silencer for rotary compressor

Country Status (1)

Country Link
JP (1) JPH0726633B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6270329B1 (en) * 1999-06-11 2001-08-07 Hiatchi, Ltd. Rotary compressor
US6336800B1 (en) * 1999-07-28 2002-01-08 Lg Electronics Inc. Rotary compressor
JP2002213355A (en) * 2001-01-18 2002-07-31 Daikin Ind Ltd Silencing mechanism for compressor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106704199A (en) * 2017-01-19 2017-05-24 珠海凌达压缩机有限公司 Flange and have its amortization structure, compressor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6270329B1 (en) * 1999-06-11 2001-08-07 Hiatchi, Ltd. Rotary compressor
US6336800B1 (en) * 1999-07-28 2002-01-08 Lg Electronics Inc. Rotary compressor
JP2002213355A (en) * 2001-01-18 2002-07-31 Daikin Ind Ltd Silencing mechanism for compressor

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JPH0726633B2 (en) 1995-03-29

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