JPH0388987A - Scroll type compressor - Google Patents

Scroll type compressor

Info

Publication number
JPH0388987A
JPH0388987A JP22646989A JP22646989A JPH0388987A JP H0388987 A JPH0388987 A JP H0388987A JP 22646989 A JP22646989 A JP 22646989A JP 22646989 A JP22646989 A JP 22646989A JP H0388987 A JPH0388987 A JP H0388987A
Authority
JP
Japan
Prior art keywords
hole
spiral
bypass
bypass hole
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.)
Granted
Application number
JP22646989A
Other languages
Japanese (ja)
Other versions
JP2551164B2 (en
Inventor
Yoshimasa Doi
土井 善正
Hitoshi Ozawa
仁 小沢
Yoshiaki Matoba
的場 好昭
Ryusuke Nagabuchi
長渕 龍介
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 JP1226469A priority Critical patent/JP2551164B2/en
Publication of JPH0388987A publication Critical patent/JPH0388987A/en
Application granted granted Critical
Publication of JP2551164B2 publication Critical patent/JP2551164B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the pressure loss of bypass flow by arranging a bypass hole for a compression chamber so that it opens to the inner side radially for the inner surface of the spiral, and putting it in communication with a valve seat part via a spread communication hole, which has a larger communicative area than the bypass hole and is formed within the wall thickness of the end plate of a stationary scroll. CONSTITUTION:During partial load operation the gas in a compression chamber A is led to a seat part from a bypass hole 7A via a spread communication hole 9, and the section area is enlarged at this communication hole 9. Thereby the speed of bypass flow sinks and the pressure loss is reduced. Further, this bypass hole 7A opens to the inner side radially at the inner surface 2a of the spiral of a stationary scroll 2, and the spread communication hole 9 is formed within the wall thickness of the end plate 21 of stationary scroll 2, so that the strength of the spiral is also assured.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、バイパス穴の開閉により容量制御を行うスク
ロール形圧縮機に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a scroll compressor whose capacity is controlled by opening and closing bypass holes.

(従来の技術) 一般に、第2図〜第4図に見られるように、固定スクロ
ール(2)の渦巻体(22)と可動スクロール(3)の
渦巻体(32)との間には、二系統の圧縮室(A、B)
が画成され、各圧縮室に対応してバイパス穴(7)は一
対(7A、7B)設けられる。この内、固定スクロール
(2)の渦巻内面(2a)と可動スクロール(3)の渦
巻外面(3b)とで画成される圧縮室(A)を吸入室(
11)に逃がすバイパス穴(7A)は、固定スクロール
(2)の渦巻内面(2a)側に位置されるものであり、
可動スクロール(3)の回動により摺接点(PA)がこ
の穴(7A)を通過する時(第3図の状態)、鎖式(7
A)は、可動スクロール(3)の渦巻体(32)の幅寸
法内で盲され、内周側に位置する圧縮室(B)と遮断さ
れなければならない。このため、鎖式(7A)は、固定
スクロール(2)の渦巻内面(2a)から径方向内方側
には大きく開口することはできない。
(Prior Art) Generally, as shown in FIGS. 2 to 4, there is a two-way structure between the spiral body (22) of the fixed scroll (2) and the spiral body (32) of the movable scroll (3). System compression chamber (A, B)
are defined, and a pair (7A, 7B) of bypass holes (7) are provided corresponding to each compression chamber. Among these, the compression chamber (A) defined by the spiral inner surface (2a) of the fixed scroll (2) and the spiral outer surface (3b) of the movable scroll (3) is the suction chamber (
The bypass hole (7A) for escape to 11) is located on the spiral inner surface (2a) side of the fixed scroll (2),
When the sliding contact (PA) passes through this hole (7A) due to the rotation of the movable scroll (3) (the state shown in Figure 3), the chain type (7
A) must be closed within the width dimension of the spiral body (32) of the movable scroll (3) and must be isolated from the compression chamber (B) located on the inner circumferential side. For this reason, the chain type (7A) cannot have a large opening radially inward from the spiral inner surface (2a) of the fixed scroll (2).

従来、このような固定スクロール(2)の渦巻内面(2
a)と可動スクロール(3)の渦巻外面(3b)とで画
成される圧縮室(A)側のバイパス穴(7A)の開口上
の制約から、特開昭57−148089号公報に開示さ
れ且つ第9図に示すように、バイパス穴(7A)の外縁
側を固定スクロール(2)の渦巻内面(2a)よりも径
方向外方側にくい込ませて形成し、開口面積をかせぐこ
とでバイパス流の圧力損失を低減するようにしている。
Conventionally, the spiral inner surface (2) of such a fixed scroll (2)
a) and the spiral outer surface (3b) of the movable scroll (3) due to restrictions on the opening of the bypass hole (7A) on the side of the compression chamber (A). In addition, as shown in Fig. 9, the outer edge side of the bypass hole (7A) is formed by being inserted into the radially outward side of the spiral inner surface (2a) of the fixed scroll (2) to increase the opening area. This is intended to reduce flow pressure loss.

(発明が解決しようとする課題) しかし、第9図のようにバイパス穴(7A)を固定スク
ロール(2)の渦巻内面(2a)よりも径方向外方側に
くい込ませて形成する構造では、バイパス穴(7A)を
閉じて全負荷運転を行う場合、鎖式(7A)を介して圧
縮流体が漏れる問題が起こる。すなわち、第2図に見ら
れるように、吸入室(11)と遮断されて圧縮動作が進
行している圧縮室(A)は、第3図に見られるように、
摺接点(PA)がバイパス穴(7A)を通過する際、固
定スクロール(2)の渦巻内面(2a)にくい込ませた
バイパス穴(7A)を介して吸入室(11)に連通して
しまうことになり、該圧縮室(A)の渦巻接線方向のシ
ール性が阻害されて圧縮流体が吸入側に漏れ、性能低下
を招くことになる。
(Problem to be Solved by the Invention) However, in the structure in which the bypass hole (7A) is embedded in the radially outward side of the spiral inner surface (2a) of the fixed scroll (2) as shown in FIG. When operating at full load with the bypass hole (7A) closed, the problem arises that compressed fluid leaks through the chain (7A). That is, as shown in FIG. 2, the compression chamber (A), which is isolated from the suction chamber (11) and where the compression operation is progressing, is separated from the suction chamber (11), as shown in FIG.
When the sliding contact (PA) passes through the bypass hole (7A), it communicates with the suction chamber (11) through the bypass hole (7A) inserted into the spiral inner surface (2a) of the fixed scroll (2). As a result, the sealing performance of the compression chamber (A) in the spiral tangential direction is impaired, and the compressed fluid leaks to the suction side, resulting in a decrease in performance.

その上、バイパス穴(7A)を固定スクロール(2)の
渦巻内面(2a)にくい込ませていると、固定スクロー
ル(2)の渦巻体(22)の根元部分の応力が高くなり
、渦巻体(22)の信頼性が損なわれる問題も起こる。
Moreover, if the bypass hole (7A) is embedded in the spiral inner surface (2a) of the fixed scroll (2), the stress at the root of the spiral body (22) of the fixed scroll (2) increases, and the spiral body ( 22) may also cause a problem of loss of reliability.

本発明の目的は、バイパス穴の開口部分の構造を工夫す
ることにより、渦巻のシール性及び信頼性を確保しなが
らバイパス流の圧力損失を低減できるスクロール形圧縮
機を提供するにある。
An object of the present invention is to provide a scroll compressor that can reduce the pressure loss of the bypass flow while ensuring the sealability and reliability of the volute by devising the structure of the opening of the bypass hole.

(課題を解決するための手段) そこで、本発明では、固定スクロール(2)の鏡板(2
1)に、該固定スクロール(2)の渦巻内面(2a)と
可動スクロール(3)の渦巻外面(3b)とで画成され
る圧縮室(A)に開口するバイパス穴(7A)を設けて
、該バイパス穴(7A)を、弁体(5)のシート部(6
)への着座又は離間により′吸入側に開閉するようにし
た構成において、前記バイパス穴(7A)を、固定スク
ロール(2)の渦巻内面(2a)に対し径方向内方側に
開口すると共に、前記バイパス穴(7A)を、該バイパ
ス穴(7A)よりも広い連通面積をもち、前記鏡板(2
1)の肉厚内に形成する拡開連通穴(9)を介して前記
シート部(6)に連通ずることにした。
(Means for solving the problem) Therefore, in the present invention, the end plate (2) of the fixed scroll (2)
1) is provided with a bypass hole (7A) that opens into a compression chamber (A) defined by the spiral inner surface (2a) of the fixed scroll (2) and the spiral outer surface (3b) of the movable scroll (3). , the bypass hole (7A) is connected to the seat part (6) of the valve body (5).
), the bypass hole (7A) is opened radially inward with respect to the spiral inner surface (2a) of the fixed scroll (2), and The bypass hole (7A) has a larger communication area than the bypass hole (7A) and is connected to the end plate (2).
It was decided to communicate with the seat portion (6) through an enlarged communication hole (9) formed within the wall thickness of 1).

(作用) 部分負荷運転時、第1図、第2図に示すように、圧縮室
(A)のガスは、バイパス穴(7A)から拡開連通穴(
9)を介してシート部(6)に連通され、拡開連通穴(
9)で通路面積が拡大されることによりバイパス流の流
速が低下され、圧力損失が低減できる。
(Function) During partial load operation, as shown in Figures 1 and 2, gas in the compression chamber (A) flows from the bypass hole (7A) to the expanded communication hole (
9) to the seat part (6), and the expanded communication hole (
By expanding the passage area in 9), the flow velocity of the bypass flow is reduced, and pressure loss can be reduced.

又、このバイパス穴(7A)は、固定スクロール(2)
の渦巻内面(2a)の径方向内方側に開口し、かつ、拡
開連通穴(9)は、固定スクロール(2)の鏡板(21
)の肉厚内に形成しているから、渦巻の強度も保証でき
る。
Also, this bypass hole (7A) is connected to the fixed scroll (2).
The enlarged communication hole (9) opens radially inward of the spiral inner surface (2a) of the fixed scroll (2).
), the strength of the spiral can be guaranteed.

更に、バイパス穴(7A)は固定スクロール(2)の渦
巻内面(2a)にくい込まないから、全負荷運転時、第
3図に示すように、固定スクロールの渦巻内面(2a)
と可動スクロール(3)の渦巻外面(3b)との間の摺
接点がバイパス穴(7A)を通過する際にも、内側の圧
縮室(A)が渦巻接線方向を介して吸入側に連通ずると
いった事態がなくなり、圧縮室(A)のシール性が保持
される。
Furthermore, since the bypass hole (7A) does not sink into the spiral inner surface (2a) of the fixed scroll (2), during full load operation, as shown in FIG.
Even when the sliding contact point between the spiral outer surface (3b) of the movable scroll (3) passes through the bypass hole (7A), the inner compression chamber (A) communicates with the suction side via the spiral tangential direction. This situation is eliminated, and the sealing performance of the compression chamber (A) is maintained.

(実施例) 第5図に示すものは、密閉ケーシング(1)の内部上方
に、各鏡板(21)(31)に端面にチップシール(2
0)(30)を嵌合した渦巻体(22)(32)を突設
した固定及び可動スクロール(2)(3)を、架橋(1
0)を介して支持すると共に、固定スクロール(2)の
中心部に設ける吐出穴(4)に吐出弁(41)を付設し
、可動スクロール(3)の公転駆動により、外周部の吸
入室(11)(11)から吸入する低圧ガスを、各渦巻
体(22)(32)間に形成される二系統の圧縮室(A
、)(B)で圧縮し、高圧ガスを吐出穴(4)から吐出
チャンバー(42)を経て吐出管(43)に吐出するよ
うにしている。
(Example) The one shown in Fig. 5 has chip seals (2
Fixed and movable scrolls (2) and (3) protruding from spiral bodies (22) and (32) fitted with
At the same time, a discharge valve (41) is attached to the discharge hole (4) provided in the center of the fixed scroll (2), and the suction chamber ( 11) The low pressure gas taken in from (11) is passed through two systems of compression chambers (A
, ) (B), and the high-pressure gas is discharged from the discharge hole (4) through the discharge chamber (42) and into the discharge pipe (43).

固定スクロール(2)には、二系統の圧縮室(A)(B
)に対応して一対のアンローダシリンダ(50)(一つ
のみを図示)を突設しており、該シリンダ(50)に、
スプリング(51)で開側に付勢されるポペット式の弁
体(5)を内装し、該弁体(5)のシート部(6)側に
、圧縮行程途中の各圧縮室(A)(B)に開口され、連
通路(80)を介して吸入室(11)に連通されるバイ
パス穴(7)を形成している。そしてシリンダ(50)
の背圧室(52)に、外部継手(81)、内部継手(8
2)、分配管(83)及び分配継手(84)をもつパイ
ロット通、路(80)を接続し、高圧のパイロット圧の
導入によりバイパス穴(7)を閉じて全負荷運転を、又
、低圧のパイロット圧の導入によりバイパス穴(7)を
開いて部分負荷運転を行うようにしている。
The fixed scroll (2) has two systems of compression chambers (A) and (B).
) is provided with a pair of unloader cylinders (50) (only one shown) protruding from the cylinders (50).
A poppet-type valve body (5) that is biased toward the open side by a spring (51) is installed inside, and each compression chamber (A) ( A bypass hole (7) is formed that is open to B) and communicated with the suction chamber (11) via a communication path (80). and cylinder (50)
In the back pressure chamber (52), an external joint (81) and an internal joint (8
2), connect the pilot passageway (80) with the distribution pipe (83) and the distribution joint (84), close the bypass hole (7) by introducing high pilot pressure and operate at full load; By introducing the pilot pressure, the bypass hole (7) is opened to perform partial load operation.

尚、第5図中、(44)は介挿え、(45)は油分離体
である。
In FIG. 5, (44) is an insert, and (45) is an oil separator.

又、第2図〜第3図に明示するように、上記二系統の圧
縮室は、固定スクロール(2)の渦巻内面(2a)と可
動スクロール(3)の渦巻外面(3b)とで画成される
第1圧縮室(A)と、固定スクロール(2)の渦巻外面
(2b)と可動スクロール(3)の渦巻内面(3a)と
で画成される第2圧縮室(B)とからなる。更に、上記
バイパス穴(7)はこれら第1及び第2圧縮室(A)(
B)に各々開口される第1及び第2バイパス穴(7A)
(7B)からなっており、これらバイパス穴(7A)(
7B)は、複数個の小さなキリ穴(70)で構成してい
る。
Moreover, as clearly shown in FIGS. 2 and 3, the two systems of compression chambers are defined by the spiral inner surface (2a) of the fixed scroll (2) and the spiral outer surface (3b) of the movable scroll (3). The second compression chamber (B) is defined by the spiral outer surface (2b) of the fixed scroll (2) and the spiral inner surface (3a) of the movable scroll (3). . Furthermore, the bypass hole (7) is connected to these first and second compression chambers (A) (
B) first and second bypass holes (7A) each opened in
(7B), and these bypass holes (7A) (
7B) is composed of a plurality of small drill holes (70).

以上の構成で第1図にも明示するように、第1バイパス
穴(7A)を、固定スクロール(2)の渦巻内面(2a
)に対し径方向内方側すなわち該渦巻内面(2a)から
外方にくい込まないように形成すると共に、この第1バ
イパス穴(7A)を、該バイパス穴(7A)よりも広い
連通面積をもち、固定スクロール(2)の鏡板(21)
の肉厚内に形成する拡開連通穴(8)を介してシート部
(6)に連通ずる。この拡開連通穴(9)は、具体的に
は、第2図〜第4図に示すように、バイパス穴(7)を
構成する複数個のキリ穴(70)を一つにまとめてシー
ト部(6)に連通ずる長穴(91)で構成している。尚
、2つのバイパス穴で生じる圧力損失を均等化するため
、第2バイパス穴(7B)も同様な拡開連通穴(9)を
介してシート部(6)に連通している。
With the above configuration, as shown in FIG. 1, the first bypass hole (7A) is connected to the spiral inner surface (2a) of the fixed scroll (2).
) is formed so that it does not sink in from the radially inward side, that is, the spiral inner surface (2a), and the first bypass hole (7A) has a wider communication area than the bypass hole (7A). , end plate (21) of fixed scroll (2)
It communicates with the seat part (6) through an enlarged communication hole (8) formed within the wall thickness of the seat part (6). Specifically, as shown in FIGS. 2 to 4, this expanded communication hole (9) is formed by combining a plurality of drilled holes (70) that constitute the bypass hole (7) into one sheet. It consists of an elongated hole (91) that communicates with the section (6). In order to equalize the pressure loss occurring in the two bypass holes, the second bypass hole (7B) also communicates with the seat portion (6) via a similar enlarged communication hole (9).

以上の構成によれば、部分負荷運転時、第2図に示すよ
うに、第1圧縮室(A)のガスは、バイパス穴(7A)
から拡開連通穴(9)を介してシート部(6)に連通さ
れ、拡開連通穴(9)で通路面積が拡大されることによ
りバイパス流の流速が低下され、圧力損失が低減できる
。これにより、良好な部分負荷運転が行える。
According to the above configuration, during partial load operation, as shown in FIG. 2, the gas in the first compression chamber (A) is
The bypass flow is communicated with the seat part (6) via the expanded communication hole (9), and the passage area is expanded by the expanded communication hole (9), thereby reducing the flow velocity of the bypass flow and reducing pressure loss. This allows good partial load operation.

又、この第1バイパス穴(7A)は、固定スクロール(
2)の渦巻内面(2a)の径方向内方側に開口し、かつ
、拡開連通穴(9)は、固定スクロール(2)の鏡板(
21)の肉厚内に形成しているから、渦巻体(21)の
強度も保証でき、該渦巻体(22)の信頼性も保たれる
Moreover, this first bypass hole (7A) is connected to the fixed scroll (
The expanding communication hole (9) opens radially inward of the spiral inner surface (2a) of 2) and is connected to the end plate (2) of the fixed scroll (2).
Since it is formed within the thickness of the spiral body (21), the strength of the spiral body (21) can be guaranteed, and the reliability of the spiral body (22) can also be maintained.

尚、この部分負荷運転時、バイパス動作の完了した圧縮
室(A)は、第4図に示すように、中心側の吐出穴(4
)に向けてだんだんと圧縮動作が進行されることになる
In addition, during this partial load operation, the compression chamber (A) where the bypass operation has been completed is connected to the discharge hole (4) on the center side, as shown in Fig. 4.
), the compression operation will gradually progress toward

一方、全負荷運転の場合は、第2図に示す状態から第3
図に示す状態に移り、摺接点(PA)tfit<イバス
穴(7A)を通過しても、バイパス穴(7A)は渦巻内
面(2a)にくい込んでいないため、圧縮動作の進行し
た内側の圧縮室(A)からtlli巻接線方接線方向が
多く漏れる事態を回避でき、圧縮室(A)のシール性が
保持されて性能の向上が図られる。
On the other hand, in the case of full load operation, from the state shown in Figure 2 to the third
Moving to the state shown in the figure, even if the sliding contact (PA) tfit<passing through the bus hole (7A), the bypass hole (7A) is not embedded in the spiral inner surface (2a), so the compression of the inside where the compression operation has progressed It is possible to avoid a situation in which a large amount of the tlli winding tangential direction leaks from the chamber (A), and the sealing performance of the compression chamber (A) is maintained, thereby improving performance.

以上の実施例では、拡開連通穴(9)を長穴(91)で
構成したが、第8図のように、バイパス穴(7A)を構
成する複数個のキリ穴(70)を数個づつまとめてシー
ト部(8)に連通する径大なキリ穴(92)で構成して
もよい。
In the above embodiment, the expansion communication hole (9) was constructed with an elongated hole (91), but as shown in FIG. They may be configured with large-diameter drill holes (92) that communicate with the seat portion (8).

又、バイパス穴(7A)は、複数個のキリ穴(70)で
構成したが、第7図又は第8図のように、固定スクロー
ル(2)の渦巻内面(2a)に沿う外縁をもつ細長穴(
700)で構成してもよく、そして、との細長穴、(7
00)を、第7図に示す長穴(81)や、又は第8図に
示す複数の径大なキリ穴(92)でシート部(8)に連
通ずるようにしてもよい。
In addition, the bypass hole (7A) is composed of a plurality of drilled holes (70), but as shown in FIG. hole(
700), and a slotted hole with (7
00) may be communicated with the seat portion (8) through an elongated hole (81) shown in FIG. 7 or a plurality of large diameter drilled holes (92) shown in FIG.

(発明の効果) 以上、本発明では、固定スクロール(2)の渦巻内面(
2a)と可動スクロール(3)の渦巻外面(3b)とで
画成される圧縮室(A)に対するバイパス穴(7A)を
、前記渦巻内面(2a)に対し径方向内方側に開口する
と共に、該バイパス穴(7A)よりも広い連通面積をも
ち、固定スクロール(2)の鏡板(21)の肉厚内に形
成する拡開連通穴(9)を介して弁体(5)のシート部
(6)に連通したから、渦巻のシール性及び信頼性を確
保できながらバイパス流の圧力損失を低減できるのであ
る。
(Effects of the Invention) As described above, in the present invention, the spiral inner surface (
2a) and the spiral outer surface (3b) of the movable scroll (3), a bypass hole (7A) for the compression chamber (A) is opened radially inward with respect to the spiral inner surface (2a), and The seat portion of the valve body (5) is connected to the seat portion of the valve body (5) through an enlarged communication hole (9) which has a communication area larger than the bypass hole (7A) and is formed within the wall thickness of the end plate (21) of the fixed scroll (2). (6), the pressure loss of the bypass flow can be reduced while ensuring the sealing performance and reliability of the vortex.

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

第1図は本発明に係るバイパス穴部分の要部拡大断面図
、第2図と第3図及び第4図は同作用を説明する渦巻平
面図、第5図は圧縮機の一部省略縦断面図、第6図と第
7図及び第8図は他の実施例を示す要部平面図、第9図
は従来例の要部断面図である。 (2)・・・・固定スクロール (3)・・・・可動スクロール (21)・・・・鏡板 (2a)・・・・渦巻内面 (3b)・・・・渦巻外面 (5)・・・・弁体 (6)・・・・シート部 (7A)・・・・バイパス穴 (9)・・・・拡開連通穴 第6図 第8図 第7図 第9図
Fig. 1 is an enlarged sectional view of the main part of the bypass hole portion according to the present invention, Figs. 2, 3, and 4 are spiral plan views explaining the same action, and Fig. 5 is a partially omitted longitudinal section of the compressor. 6, 7, and 8 are plan views of main parts showing other embodiments, and FIG. 9 is a sectional view of main parts of a conventional example. (2)... Fixed scroll (3)... Movable scroll (21)... End plate (2a)... Spiral inner surface (3b)... Spiral outer surface (5)...・Valve body (6)... Seat part (7A)... Bypass hole (9)... Expanding communication hole Fig. 6 Fig. 8 Fig. 7 Fig. 9

Claims (1)

【特許請求の範囲】[Claims] 1)固定スクロール(2)の鏡板(21)に、該固定ス
クロール(2)の渦巻内面(2a)と可動スクロール(
3)の渦巻外面(3b)とで画成される圧縮室(A)に
開口するバイパス穴(7A)を設けて、該バイパス穴(
7A)を、弁体(5)のシート部(6)への着座又は離
間により吸入側に開閉するようにしたスクロール形圧縮
機において、前記バイパス穴(7A)を、固定スクロー
ル(2)の渦巻内面(2a)に対し径方向内方側に開口
すると共に、前記バイパス穴(7A)を、該バイパス穴
(7A)よりも広い連通面積をもち、前記鏡板(21)
の肉厚内に形成する拡開連通穴(9)を介して前記シー
ト部(6)に連通したことを特徴とするスクロール形圧
縮機。
1) On the end plate (21) of the fixed scroll (2), the spiral inner surface (2a) of the fixed scroll (2) and the movable scroll (
A bypass hole (7A) is provided that opens into the compression chamber (A) defined by the spiral outer surface (3b) of 3).
7A) is configured to open and close on the suction side by seating or separating the valve body (5) from the seat portion (6). The end plate (21) is opened radially inward with respect to the inner surface (2a), and has a communication area wider than the bypass hole (7A), and has a communication area larger than the bypass hole (7A).
A scroll type compressor, characterized in that the scroll compressor communicates with the seat portion (6) through an enlarged communication hole (9) formed within the wall thickness of the scroll compressor.
JP1226469A 1989-08-31 1989-08-31 Scroll compressor Expired - Fee Related JP2551164B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1226469A JP2551164B2 (en) 1989-08-31 1989-08-31 Scroll compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1226469A JP2551164B2 (en) 1989-08-31 1989-08-31 Scroll compressor

Publications (2)

Publication Number Publication Date
JPH0388987A true JPH0388987A (en) 1991-04-15
JP2551164B2 JP2551164B2 (en) 1996-11-06

Family

ID=16845590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1226469A Expired - Fee Related JP2551164B2 (en) 1989-08-31 1989-08-31 Scroll compressor

Country Status (1)

Country Link
JP (1) JP2551164B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001132667A (en) * 1999-11-04 2001-05-18 Mitsubishi Heavy Ind Ltd Scroll compressor
EP1706587A2 (en) * 2004-01-07 2006-10-04 Carrier Corporation Scroll compressor with enlarged vapor injection port area
JP2011027117A (en) * 2010-11-08 2011-02-10 Hitachi Ltd Compressor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001132667A (en) * 1999-11-04 2001-05-18 Mitsubishi Heavy Ind Ltd Scroll compressor
EP1706587A2 (en) * 2004-01-07 2006-10-04 Carrier Corporation Scroll compressor with enlarged vapor injection port area
EP1706587A4 (en) * 2004-01-07 2010-01-27 Carrier Corp Scroll compressor with enlarged vapor injection port area
JP2011027117A (en) * 2010-11-08 2011-02-10 Hitachi Ltd Compressor

Also Published As

Publication number Publication date
JP2551164B2 (en) 1996-11-06

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