JP2551158B2 - Scroll compressor - Google Patents

Scroll compressor

Info

Publication number
JP2551158B2
JP2551158B2 JP1201920A JP20192089A JP2551158B2 JP 2551158 B2 JP2551158 B2 JP 2551158B2 JP 1201920 A JP1201920 A JP 1201920A JP 20192089 A JP20192089 A JP 20192089A JP 2551158 B2 JP2551158 B2 JP 2551158B2
Authority
JP
Japan
Prior art keywords
substrate
back pressure
scroll
operating pressure
joint
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.)
Expired - Fee Related
Application number
JP1201920A
Other languages
Japanese (ja)
Other versions
JPH0367083A (en
Inventor
善正 土井
仁 小沢
昌幸 森山
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.)
Daikin Industries Ltd
Original Assignee
Daikin 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP1201920A priority Critical patent/JP2551158B2/en
Publication of JPH0367083A publication Critical patent/JPH0367083A/en
Application granted granted Critical
Publication of JP2551158B2 publication Critical patent/JP2551158B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、可変容量形のスクロール形圧縮機、詳しく
は、固定及び可動スクロールを備え、圧縮途上の圧縮室
に開口する一対のバイパス孔をアンローダピストンの作
動で吸入側に連通又は遮断するようにしたスクロール形
圧縮機に関する。
Description: TECHNICAL FIELD The present invention relates to a variable displacement scroll compressor, more specifically, a fixed and movable scroll, and a pair of bypass holes that open to a compression chamber during compression. The present invention relates to a scroll-type compressor configured to communicate with or cut off from a suction side by operating an unloader piston.

(従来の技術) 従来、この種スクロール形圧縮機は、特願昭63−1533
02号(特開平1−318777号公報参照)において提案さ
れ、かつ、第4図に示したごとく、固定スクロール
(S)の上部側に一対のシリンダ(C)を設けて、該各
シリンダ(C)の内部にそれぞれアンローダピストン
(P)を進退自由に介装すると共に、前記各シリンダ
(C)のピストン進出方向先端側に、圧縮途上の圧縮室
内に開口するバイパス孔(H)を設ける一方、前記固定
スクロール(S)の上方側に、前記各シリンダ(C)に
おけるピストン(P)の背圧室(R)を閉鎖する上蓋
(B)を設けて、この上蓋(B)の内部に、該上蓋
(B)の上部側から導入される操作圧を前記各シリンダ
(C)の背圧室(R)に分配状に供給する操作圧通路
(A)をドリル加工などで形成して、該通路(A)から
前記各背圧室(R)に供給される操作圧で前記各ピスト
ン(P)を進退動させ、これに伴い前記各バイパス孔
(H)を開閉操作して、前記圧縮室をバイパス通路
(D)を介して低圧吸入側に連通又は遮断させることに
より、ロード運転とアンロード運転とを選択的に行うよ
うにしている。
(Prior Art) Conventionally, this type of scroll compressor is disclosed in Japanese Patent Application No. 63-1533.
No. 02 (see Japanese Laid-Open Patent Publication No. 1-318777), and as shown in FIG. 4, a pair of cylinders (C) is provided on the upper side of the fixed scroll (S), and each cylinder (C ), An unloader piston (P) is freely inserted and retracted, and a bypass hole (H) opening into the compression chamber during compression is provided at the tip end side of each cylinder (C) in the piston advancing direction. An upper lid (B) that closes the back pressure chamber (R) of the piston (P) in each cylinder (C) is provided above the fixed scroll (S), and inside the upper lid (B), An operating pressure passage (A) for supplying the operating pressure introduced from the upper side of the upper lid (B) to the back pressure chamber (R) of each cylinder (C) in a distributed manner is formed by drilling or the like, and the passage is formed. Operating pressure supplied from (A) to each of the back pressure chambers (R) By moving the pistons (P) forward and backward and opening and closing the bypass holes (H) accordingly, the compression chamber is communicated with or cut off from the low pressure suction side through the bypass passage (D). The load operation and the unload operation are selectively performed.

また、前記操作圧通路(A)は、通常、前記上蓋
(B)の外周一部から所定の奥内部にまで、ドリル加工
により通孔(A1)を形成して、この通孔端部側に結栓
(a)を設けると共に、前記上蓋(B)の上方中央部
に、前記通孔(A1)に連通する導入孔(A2)を開設する
一方、前記上蓋(B)の各背圧室(R)との対応部位
に、前記通孔(A1)からの操作圧を各背圧室(R)に導
入させる通孔(A3)をそれぞれ設けて構成される。
Further, the operation pressure passage (A) is usually formed by drilling a through hole (A1) from a part of the outer periphery of the upper lid (B) to a predetermined inner part, and the through hole end side is formed. A stopper (a) is provided, and an introduction hole (A2) communicating with the through hole (A1) is opened in the upper center portion of the upper lid (B), while each back pressure chamber (of the upper lid (B) ( R) is provided with a through hole (A3) for introducing the operating pressure from the through hole (A1) into each back pressure chamber (R).

(発明が解決しようとする課題) 所で、以上の構成では、前記上蓋(B)への前記操作
圧通路(A)の加工が非常に困難であり、しかも、前記
上蓋(B)の肉厚を大きくする必要があって材料の無駄
が大きく、更に、型式が異なるような場合で、前記固定
スクロール(S)などの大きさが変更されると、前記上
蓋(B)や操作圧通路(A)を変更する必要があるため
に、異なる型式間での共用化できないなどの問題があっ
た。
(Problems to be solved by the invention) However, with the above configuration, it is very difficult to process the operation pressure passage (A) in the upper lid (B), and the thickness of the upper lid (B) is large. However, if the size of the fixed scroll (S) is changed and the size of the fixed scroll (S) is changed, the upper cover (B) and the operating pressure passage (A Since there is a need to change), there was a problem that it cannot be shared between different types.

本発明は以上のような問題に鑑みてなしたもので、そ
の目的は、操作圧経路の形成が簡単にできて、しかも、
異なる型式間での部品共用化が可能なスクロール形圧縮
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 thereof is to easily form an operation pressure path, and
An object of the present invention is to provide a scroll compressor capable of sharing parts among different models.

(課題を解決するための手段) 上記目的を達成するために、本発明では、固定及び可
動スクロール(2)(3)を備え、該固定スクロール
(2)における渦巻体(2a)の突設側とは反対側で、圧
縮途上の圧縮室に開口する一対のバイパス孔(24)(2
4)との対向位置に、これらバイパス孔(24)(24)を
吸入側に連通又は遮断するアンローダピストン(5)
(5)を内装するための一対のシリンダ(21)(21)を
設けたスクロール形圧縮機において、前記シリンダ(2
1)(21)の開放部に、該各開放部を閉鎖して前記各ピ
ストン(5)(5)の背圧室(23)(23)を形成する閉
鎖部(61)(61)をもつ一枚の基板(6)を設けて、こ
の基板(6)の上面中央部に操作圧を導入する操作圧導
入管(71)の接続継手(7)を取付けると共に、前記基
板(6)の上面における前記各背圧室(23)(23)の対
応部に、該各背圧室(23)(23)に連通する操作圧の分
配継手(8)(8)をそれぞれ取付けて、これら各分配
継手(8)(8)と前記接続継手(7)との間を、それ
ぞれ直管(9)(9)を介して接続したのである。
(Means for Solving the Problems) In order to achieve the above object, the present invention includes a fixed scroll and a movable scroll (2) (3), and the fixed scroll (2) has a spiral body (2a) projecting side. A pair of bypass holes (24) (2
An unloader piston (5) that communicates or blocks these bypass holes (24) (24) with the suction side at a position facing the 4).
A scroll type compressor provided with a pair of cylinders (21) and (21) for housing (5), wherein the cylinder (2
1) The open part of (21) has a closed part (61) (61) that closes each open part to form a back pressure chamber (23) (23) of each piston (5) (5). A single substrate (6) is provided, and a connection joint (7) of an operating pressure introducing pipe (71) for introducing an operating pressure is attached to the central portion of the upper surface of the substrate (6), and the upper surface of the substrate (6) is attached. At the corresponding portions of the respective back pressure chambers (23) (23) in, the operating pressure distribution joints (8) (8) communicating with the respective back pressure chambers (23) (23) are attached, The joints (8) and (8) and the connection joint (7) were connected via the straight pipes (9) and (9), respectively.

(作用) 前記各背圧室(23)(23)に操作圧を導入する操作圧
経路は、固定スクロール(2)に設ける一対のシリンダ
(21)(21)の開放部を一枚の基板(6)で閉鎖し、こ
の一枚の基板(6)に、操作圧を導入するための操作圧
導入管(71)の接続継手(7)と、前記各背圧室(23)
(23)に対応する分配継手(8)(8)とを取付けて、
該各分配継手(8)(8)と前記接続継手(7)とを直
管(9)(9)で接続するだけで簡単に形成され、しか
も、配管も直管なので形成が容易であるのは勿論のこ
と、直管(9)(9)を予め長く形成しておくことによ
り、形式が異なっても、それぞれに対応して直管を切断
するだけでその長さを調整できるので配管形成が容易で
あり、さらに、このように型式が異なるような場合、基
板(6)の各継手(7)(8)の形成位置と直管(9)
の長さを調節するだけで操作圧経路を自由に設定できる
ので、その経路を簡単に形成できながら、接続継手
(7)や各分配継手(8)の共用化が可能となるのであ
る。
(Operation) The operation pressure path for introducing the operation pressure into each of the back pressure chambers (23) (23) has an open portion of a pair of cylinders (21) (21) provided in the fixed scroll (2) as a single substrate ( 6), the connection joint (7) of the operating pressure introducing pipe (71) for introducing the operating pressure to the single substrate (6), and the back pressure chambers (23).
Attach distribution joints (8) and (8) corresponding to (23),
The distribution joints (8) and (8) and the connection joint (7) are connected to each other by the straight pipes (9) and (9), and the pipes are straight pipes. Needless to say, by forming the straight pipes (9) (9) long in advance, even if the type is different, the length can be adjusted simply by cutting the straight pipes so that the pipe can be formed. In addition, when the types are different from each other, the positions where the joints (7) and (8) are formed on the substrate (6) and the straight pipe (9) are easily formed.
Since the operating pressure path can be freely set only by adjusting the length of, the connection joint (7) and each distribution joint (8) can be commonly used while the path can be easily formed.

(実施例) 第2図及び第3図は可変容量形のスクロール形圧縮機
を示しており、密閉ケーシング(1)の内方上部に、固
定スクロール(2)と、該固定スクロール(2)に対し
公転駆動される可動スクロール(3)とを、架構(4)
を介して上下対向状に支持すると共に、前記各スクロー
ル(2)(3)の各渦巻体(2a)(3a)間に形成される
二系統の圧縮室(X)(Y)内で、それぞれ吸入ポート
(11)(11)から吸入される吸入流体を圧縮し、この圧
縮流体を前記固定スクロール(2)の中央上部側に形成
した吐出孔(12)から、該吐出孔(12)に設けた吐出弁
(13)の開閉作動で外部に吐出させるようにしている。
(Embodiment) FIG. 2 and FIG. 3 show a variable capacity scroll type compressor, in which a fixed scroll (2) and a fixed scroll (2) are provided in an upper inner part of a hermetic casing (1). The movable scroll (3), which is driven to revolve, is connected to the frame (4).
And are supported in a vertically opposed manner via the respective scrolls (2) and (3) in the two-system compression chambers (X) (Y) formed between the scrolls (2a) and (3a), respectively. The suction fluid sucked from the suction ports (11) (11) is compressed, and the compressed fluid is provided in the discharge hole (12) from the discharge hole (12) formed in the upper center side of the fixed scroll (2). The discharge valve (13) is opened and closed to discharge outside.

また、前記固定スクロール(2)の上部側に、一対の
上部が開放した筒状のシリンダ(21)(21)を相対向状
に突設し、該各シリンダ(21)の内部に、それぞれアン
ローダピストン(5)(5)を進退自由に介装させて、
前記シリンダ(21)(21)の開放部に、該各開放部を同
時に閉鎖して前記各ピストン(5)(5)の背圧室(2
3)(23)を形成する一枚の基板(6)を配設し、前記
各ピストン(5)を前記各シリンダ(21)内に配設した
スプリング(22)で、前記各シリンダ(21)におけるピ
ストン(5)の上部側に形成した前記背圧室(23)(2
3)へと常時付勢させると共に、前記各シリンダ(21)
のピストン進出方向先端側に、圧縮行程途中の前記各圧
縮室(X)(Y)内に開口される一対のバイパス孔(2
4)(24)を設ける一方、前記固定スクロール(2)の
内部に、前記各バイパス孔(24)と各吸入室(11)とを
連通させるバイパス通路(25)を形成して、前記各シリ
ンダ(21)の背圧室(23)にそれぞれ高圧又は低圧の操
作圧を導入させることで、前記各ピストン(5)を進退
動させ、これに伴い前記各バイパス孔(24)を開閉操作
して、前記各圧縮室(X)(Y)を前記バイパス通路
(25)を介して前記吸入室(11)側に連通又は遮断させ
ることにより、ロード運転とアンロード運転とを選択的
に行うようにしている。
On the upper side of the fixed scroll (2), a pair of cylindrical cylinders (21) (21) whose upper parts are opened are provided so as to be opposed to each other, and inside the respective cylinders (21), unloaders are respectively provided. Insert the pistons (5) (5) freely back and forth,
The back pressure chambers (2) of the pistons (5) (5) are closed by simultaneously closing the open portions of the cylinders (21) (21).
3) A spring (22) in which one substrate (6) forming (23) is arranged, and each piston (5) is arranged in each cylinder (21), and each cylinder (21) is Of the back pressure chamber (23) (2) formed on the upper side of the piston (5) in
It is always urged to 3) and each cylinder (21)
A pair of bypass holes (2) opened in the compression chambers (X) (Y) in the middle of the compression stroke at the tip end side in the piston advancing direction
4) While providing the (24), a bypass passage (25) for communicating the bypass holes (24) with the suction chambers (11) is formed inside the fixed scroll (2) to form the cylinders. By introducing high or low operating pressure into the back pressure chamber (23) of (21), the pistons (5) are moved back and forth, and accordingly, the bypass holes (24) are opened and closed. By connecting or shutting off the compression chambers (X) (Y) to the suction chamber (11) side through the bypass passage (25), the load operation and the unload operation are selectively performed. ing.

しかして、以上の構成において、第1図で詳しく示し
たごとく、前記シリンダ(21)(21)の開放部に、該各
開放部を閉鎖して前記各ピストン(5)(5)の背圧室
(23)(23)を形成する閉鎖部(61)(61)をもつ一枚
の前記基板(6)を設けて、この基板(6)の上面中央
部に操作圧を導入する操作圧導入管(71)の接続継手
(7)を取付けると共に、前記基板(6)の上面におけ
る前記各背圧室(23)(23)の対応部に、該各背圧室
(23)(23)に連通する操作圧の分配継手(8)(8)
をそれぞれ取付けて、これら各分配継手(8)(8)と
前記接続継手(7)との間を、それぞれ直管(9)
(9)を介して接続させたのである。
Thus, in the above structure, as shown in detail in FIG. 1, the open portions of the cylinders (21) (21) are closed to close the back pressure of the pistons (5) (5). An operating pressure introduction for providing an operating pressure to the central portion of the upper surface of the substrate (6) by providing one substrate (6) having closed portions (61) (61) forming chambers (23) (23) The connection joint (7) of the pipe (71) is attached, and the back pressure chambers (23) (23) are attached to corresponding portions of the back pressure chambers (23) (23) on the upper surface of the substrate (6). Operating pressure distribution joint in communication (8) (8)
Are respectively attached, and the straight pipe (9) is provided between each of the distribution joints (8) (8) and the connection joint (7).
It was connected via (9).

具体的には、前記接続継手(7)を筒状に形成して、
この一方側開口端部を前記基板(6)の上面中央部にロ
ー付け手段などで一体に固定し、他方開口部側に前記操
作圧導入管(71)を接続して、該導入管(71)にゲージ
付き継手(72)を介して圧力管(73)を接続すると共
に、前記継手(7)の上下方向中間部で両側に、それぞ
れ前記各直管(9)を接続する接続口(74)を形成す
る。
Specifically, the connection joint (7) is formed into a tubular shape,
The opening end of the one side is integrally fixed to the central part of the upper surface of the substrate (6) by brazing means or the like, and the operation pressure introducing pipe (71) is connected to the other opening side of the introducing pipe (71). ) To the pressure pipe (73) via a gauged joint (72), and the straight pipe (9) is connected to both sides of the joint (7) at an intermediate portion in the vertical direction. ) Is formed.

また、前記各分配継手(8)は、長さ方向一側に径小
の取付部(81)を設けて、該取付部(81)を、前記基板
(6)における前記背圧室(23)との対応部位に設けた
取付孔(62)に挿入してロー付けなどを行うことで、前
記基板(6)上に取付けると共に、前記各分配継手
(8)の側部に接続口(82)を開設し、この接続口(8
2)と前記接続継手(7)の接続口(74)との間に前記
直管(9)をそれぞれロー付け手段などで接続させる。
Further, each of the distribution joints (8) is provided with a mounting portion (81) having a small diameter on one side in the length direction, and the mounting portion (81) is connected to the back pressure chamber (23) in the substrate (6). It is mounted on the substrate (6) by inserting it into a mounting hole (62) provided at a corresponding portion to and is brazed, and at the same time, is connected to a side portion of each distribution joint (8) with a connection port (82). Open this connection port (8
The straight pipe (9) is connected between 2) and the connection port (74) of the connection joint (7) by brazing means or the like.

そして、前記導入管(71)から前記接続継手(7)に
供給された操作圧を、前記各直管(9)を介して前記各
分配継手(8)へと分配し、この各分配継手(8)から
前記各背圧室(23)に供給される操作圧で、前記各ピス
トン(5)の制御を行うのである。
Then, the operating pressure supplied from the introduction pipe (71) to the connection joint (7) is distributed to the respective distribution joints (8) through the respective straight pipes (9), and the respective distribution joints ( The pistons (5) are controlled by the operating pressure supplied from 8) to the back pressure chambers (23).

以上のように、前記各背圧室(23)(23)に操作圧を
導入する操作圧経路は、固定スクロール(2)に設ける
一対のシリンダ(21)(21)の開放部を一枚の基板
(6)で閉鎖し、この一枚の基板(6)に、操作圧を導
入するためのもので操作圧導入管(71)の接続継手
(7)と、前記各背圧室(23)(23)に対応する分配継
手(8)(8)とを取付けて、該各分配継手(8)
(8)と前記接続継手(7)とを直管(9)(9)で接
続するだけで簡単に形成され、しかも、配管も直管なの
で形成が容易であるのは勿論のこと、直管(9)(9)
を予め長く形成しておくことにより、型式が異なって
も、それぞれに対応して直管を切断するだけでその長さ
を調整できるので配管形成が容易であり、さらに、この
ように型式が異なるような場合、基板(6)の各継手
(7)(8)の形成位置と直管(9)の長さを調節する
だけで操作圧経路を自由に設定できるので、その経路を
簡単に形成できながら、接続継手(7)や各分配継手
(8)の共用化が可能となるのである。
As described above, the operation pressure path for introducing the operation pressure into each of the back pressure chambers (23) (23) has a single opening portion of the pair of cylinders (21) (21) provided in the fixed scroll (2). The substrate (6) is closed, and a connection joint (7) for the operating pressure introducing pipe (71) for introducing an operating pressure into the single substrate (6) and the back pressure chambers (23). The distribution joints (8) and (8) corresponding to (23) are attached to each distribution joint (8).
(8) and the connection joint (7) are simply formed by connecting the straight pipes (9) and (9), and the pipe is also a straight pipe, so that the formation is easy, and the straight pipe is also easy. (9) (9)
Even if the model is different, the length can be adjusted by simply cutting the straight pipes corresponding to each type, so that the piping can be easily formed. In such a case, the operating pressure path can be freely set only by adjusting the formation positions of the joints (7) and (8) of the substrate (6) and the length of the straight pipe (9), and thus the path can be easily formed. Although it is possible, the connection joint (7) and each distribution joint (8) can be shared.

また、各図の実施例では、前記固定スクロール(2)
の上部側に、筒形状の油分離体(10a)とデミスタカバ
ー(10b)とから成るデミスタ(10)を固定して、デミ
スタ(10)で前記固定スクロール(2)の吐出孔(12)
から吐出される圧縮流体中の油を分離回収するようにし
ている。そして、前記カバー(10b)の上部側に設けた
凹陥部(10c)に前記基板(6)を当てがって、該基板
(6)の上部側から2本の固定ボルト(10d)を、前記
カバー(10b)の裏面側に溶接したナット(10e)へと螺
締すると共に、前記基板(6)と各シリンダ(21)の上
面との間を、各2本の計4本のボルト(10f)で螺締す
ることにより、前記基板(6)を簡単に支持可能とな
し、また、該基板(6)で前記デミスタ(10)の安定性
を保障するようにしている。
Further, in the embodiment of each drawing, the fixed scroll (2)
A demister (10) consisting of a cylindrical oil separator (10a) and a demister cover (10b) is fixed to the upper side of the, and the discharge hole (12) of the fixed scroll (2) is fixed by the demister (10).
The oil in the compressed fluid discharged from the oil is separated and collected. Then, the substrate (6) is applied to the concave portion (10c) provided on the upper side of the cover (10b), and the two fixing bolts (10d) are attached to the concave portion (10c) from the upper side of the substrate (6). It is screwed into a nut (10e) welded to the back side of the cover (10b), and two bolts (10f) are provided between the substrate (6) and the upper surface of each cylinder (21). The substrate (6) can be easily supported by screwing with (1) and the stability of the demister (10) is ensured by the substrate (6).

尚、前記カバー(10b)の外周部は、固定スクロール
(2)に結合する2本のボルト(10g)と、固定スクロ
ール(2)を貫通して架構(4)に結合する4本のボル
ト(10h)とで固定している。
The outer peripheral portion of the cover (10b) has two bolts (10g) connected to the fixed scroll (2) and four bolts (which penetrate the fixed scroll (2) and are connected to the frame (4) ( It is fixed with 10h).

(発明の効果) 以上説明したように、本発明のスクロール形圧縮機で
は、前記シリンダ(21)(21)の開放部に、該各開放部
を閉鎖して前記各ピストン(5)(5)の背圧室(23)
(23)を形成する閉鎖部(61)(61)をもつ一枚の基板
(6)を設けて、この基板(6)の上面中央部に操作圧
を導入する操作圧導入管(71)の接続継手(7)を取付
けると共に、前記基板(6)の上面における前記各背圧
室(23)(23)の対応部に、該各背圧室(23)(23)に
連通する操作圧の分配継手(8)(8)をそれぞれ取付
けて、この各分配継手(8)(8)と前記接続継手
(7)との間を、それぞれ直管(9)(9)を介して接
続したから、前記各背圧室(23)(23)に操作圧を導入
する操作圧経路を、一対のシリンダ(21)(21)の開放
部を同時に閉鎖する一枚の基板(6)に、前記接続継手
(7)と、前記各分配継手(8)(8)とを取付けて、
該各継手(7)(8)を直管(9)(9)で接続するだ
けで簡単に形成でき、しかも、配管も直管なので形成が
容易であるのは勿論のこと、直管(9)(9)を予め長
く形成しておくことにより、型式が異なっても、それぞ
れに対応して直管を切断するだけでその長さを調整でき
るので配管形成が容易であり、さらに、このように型式
が異なるような場合、基板(6)の各継手(7)(8)
の形成位置と直管(9)の長さを調節するだけで操作圧
経路を自由に設定できるので、その経路を簡単に形成で
きながら、接続継手(7)や各分配継手(8)の共用化
が可能となるのである。
(Effects of the Invention) As described above, in the scroll compressor of the present invention, the open portions of the cylinders (21) and (21) are closed to close the open portions of the pistons (5) and (5). Back Pressure Chamber (23)
A single substrate (6) having closed portions (61) (61) forming (23) is provided, and an operating pressure introducing pipe (71) for introducing an operating pressure to the central portion of the upper surface of the substrate (6) is provided. While attaching the connection joint (7), the operation pressure of the operation pressure communicating with the respective back pressure chambers (23) (23) is provided at the corresponding portion of the respective back pressure chambers (23) (23) on the upper surface of the substrate (6). Since the distribution joints (8) and (8) are attached, and the distribution joints (8) and (8) and the connection joint (7) are connected through the straight pipes (9) and (9), respectively. And connecting the operation pressure path for introducing the operation pressure to each of the back pressure chambers (23) (23) to a single substrate (6) that simultaneously closes the open portions of the pair of cylinders (21) (21). Attach the joint (7) and the distribution joints (8), (8),
The joints (7) and (8) can be easily formed simply by connecting them with the straight pipes (9) and (9), and the pipes are straight pipes. ) By forming (9) long in advance, even if the model is different, the length can be adjusted simply by cutting the straight pipe corresponding to each type, which facilitates the pipe formation. If the models are different from each other, each joint (7) (8) of the board (6)
Since the operating pressure path can be freely set only by adjusting the formation position of the pipe and the length of the straight pipe (9), the connection joint (7) and each distribution joint (8) can be shared while the path can be easily formed. It becomes possible.

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

第1図は本発明にかかるスクロール形圧縮機の要部を示
す断面図、第2図は同圧縮機の一部省略縦断面図、第3
図はその要部の平面図、第4図は従来例を示す断面図で
ある。 (2)……固定スクロール (21)……シリンダ (23)……背圧室 (24)……バイパス孔 (3)……可動スクロール (5)……アンローダピストン (6)……基板 (61)……閉鎖部 (7)……接続継手 (71)……操作圧導入管 (8)……分配継手 (9)……直管
FIG. 1 is a sectional view showing an essential part of a scroll type compressor according to the present invention, and FIG. 2 is a vertical sectional view in which the compressor is partially omitted.
FIG. 4 is a plan view of the main part, and FIG. 4 is a sectional view showing a conventional example. (2) …… Fixed scroll (21) …… Cylinder (23) …… Back pressure chamber (24) …… Bypass hole (3) …… Movable scroll (5) …… Unloader piston (6) …… Board (61) ) …… Closed part (7) …… Connection joint (71) …… Operating pressure introduction pipe (8) …… Distribution joint (9) …… Straight pipe

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭64−106990(JP,A) 特開 平1−147185(JP,A) 特開 昭57−110789(JP,A) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A 64-106990 (JP, A) JP-A 1-147185 (JP, A) JP-A 57-110789 (JP, A)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】固定及び可動スクロール(2)(3)を備
え、該固定スクロール(2)における渦巻体(2a)の突
設側とは反対側で、圧縮途上の圧縮室に開口する一対の
バイパス孔(24)(24)との対向位置に、これらバイパ
ス孔(24)(24)を吸入側に連通又は遮断するアンロー
ダピストン(5)(5)を内装するための一対のシリン
ダ(21)(21)を設けたスクロール形圧縮機において、
前記シリンダ(21)(21)の開放部に、該各開放部を閉
鎖して前記各ピストン(5)(5)の背圧室(23)(2
3)を形成する閉鎖部(61)(61)をもつ一枚の基板
(6)を設けて、この基板(6)の上面中央部に操作圧
を導入する操作圧導入管(71)の接続継手(7)を取付
けると共に、前記基板(6)の上面における前記各背圧
室(23)(23)の対応部に、該各背圧室(23)(23)に
連通する操作圧の分配継手(8)(8)をそれぞれ取付
けて、これら各分配継手(8)(8)と前記接続継手
(7)との間を、それぞれ直管(9)(9)を介して接
続したことを特徴とするスクロール形圧縮機。
1. A pair of fixed and movable scrolls (2) and (3), which are opposite to the projecting side of the scroll (2a) of the fixed scroll (2) and open to a compression chamber during compression. A pair of cylinders (21) for installing unloader pistons (5) (5) for communicating or blocking the bypass holes (24) (24) with the intake side at positions facing the bypass holes (24) (24). In the scroll type compressor provided with (21),
The back pressure chambers (23) (2) of the pistons (5) (5) are closed by closing the openings of the cylinders (21) (21).
Connection of an operating pressure introducing pipe (71) for introducing an operating pressure to the central portion of the upper surface of the substrate (6) by providing a single substrate (6) having closed portions (61) (61) forming the (3) A joint (7) is attached, and at the same time, the operation pressure is communicated with the corresponding back pressure chambers (23) (23) on the upper surface of the substrate (6) so as to communicate with the back pressure chambers (23) (23). The joints (8) and (8) are attached respectively, and the distribution joints (8) and (8) and the connection joint (7) are connected via the straight pipes (9) and (9), respectively. Characteristic scroll type compressor.
JP1201920A 1989-08-03 1989-08-03 Scroll compressor Expired - Fee Related JP2551158B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1201920A JP2551158B2 (en) 1989-08-03 1989-08-03 Scroll compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1201920A JP2551158B2 (en) 1989-08-03 1989-08-03 Scroll compressor

Publications (2)

Publication Number Publication Date
JPH0367083A JPH0367083A (en) 1991-03-22
JP2551158B2 true JP2551158B2 (en) 1996-11-06

Family

ID=16448990

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1201920A Expired - Fee Related JP2551158B2 (en) 1989-08-03 1989-08-03 Scroll compressor

Country Status (1)

Country Link
JP (1) JP2551158B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3750169B2 (en) * 1995-12-27 2006-03-01 ダイキン工業株式会社 Hermetic compressor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57110789A (en) * 1980-12-27 1982-07-09 Matsushita Electric Ind Co Ltd Control device for scroll type compressor
JPH01147185A (en) * 1987-12-01 1989-06-08 Mitsubishi Electric Corp Scroll compressor

Also Published As

Publication number Publication date
JPH0367083A (en) 1991-03-22

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