JPH03213679A - Multi-cylinder rotary compressor - Google Patents

Multi-cylinder rotary compressor

Info

Publication number
JPH03213679A
JPH03213679A JP983390A JP983390A JPH03213679A JP H03213679 A JPH03213679 A JP H03213679A JP 983390 A JP983390 A JP 983390A JP 983390 A JP983390 A JP 983390A JP H03213679 A JPH03213679 A JP H03213679A
Authority
JP
Japan
Prior art keywords
release
suction
valve
rotary compressor
hole
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
JP983390A
Other languages
Japanese (ja)
Inventor
Satoshi Suzuki
聡 鈴木
Yutaka Sato
豊 佐藤
Taiichi Kobayakawa
泰一 小早川
Yoshinori Shirafuji
好範 白藤
Sunao Takimoto
滝本　直
Shoji Hagiwara
正二 萩原
Kenji Suzuki
鈴木　賢志
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 Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP983390A priority Critical patent/JPH03213679A/en
Publication of JPH03213679A publication Critical patent/JPH03213679A/en
Pending legal-status Critical Current

Links

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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
    • 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
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • 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
    • F04C23/00—Combinations 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
    • F04C23/001—Combinations 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 of similar working principle
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/70—Safety, emergency conditions or requirements
    • F04C2270/72—Safety, emergency conditions or requirements preventing reverse rotation
    • 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
    • F04C23/00—Combinations 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
    • F04C23/008—Hermetic pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE:To prevent abnormal pressure rise on the suction side of a compression chamber at reverse rotation of a motor element by providing a release hole which opens into an enclosed vessel through a sluice valve pinchedly held between mutual compression element on the suction port part of the compression element, and opening/closing it with a plate-like release valve. CONSTITUTION:When a drive shaft 3 is rotated with a motor element 2, eccentric parts 3a, 3b and rolling pistons 9, 10 are rotated, refrigerant gas is introduced to an upper side cylinder 7 from a refrigerant storage vessel 15 through a suction pipe 17, also to a lower cylinder 8 through suction pipes 18, 20 provided with a non-return valve 19 between, and discharged outside the machine after compressed. In such multicylinder rotary compressor, a release port 8b communicating the outside of the lower cylinder 8 to the inside of a suction port 8a is provided. Further, a guide hole 13a communicating to the release port 8b is provided on a partition plate 13, a disc-like release valve 25 is loosely fitted in the hole 13a, and also the guide hole 13a is opened into an enclosed vessel 1 with a cutout 13b.

Description

【発明の詳細な説明】 ［産業上の利用分野コ この発明は複数の圧縮要素を有する多気筒回転式圧縮機
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a multi-cylinder rotary compressor having a plurality of compression elements.

［従来の技術］ 第３図は、例えば実開昭６３−１１３７８９号公報に示
された従来の多気筒回転式圧縮機を示す縦断面図である
。[Prior Art] FIG. 3 is a longitudinal sectional view showing a conventional multi-cylinder rotary compressor disclosed in, for example, Japanese Utility Model Application Publication No. 113789/1989.

図中、　（１）は密閉容器、　（２）は密閉容器（１）
の上部に収納された電動要素、　（３）は電動要素（２
）の駆動軸で、１８０°の位相差をもって偏心部（３ａ
）（３ｂ）が並設され、上軸受（４）及び下軸受（５）
により支持されている。　（７）は上側シリンダ、　（
８）は下側シリンダで、それぞれ偏心部（３ａ）　（３
ｂ）に嵌装されたローリングピストン（９）　（１０）
が収納され、それぞれ吸入口（７ａ）　（８ａｌが設け
られそれぞれ管（１１）が接続され、これに管（１２）
が圧入されている。上側及び下側シリンダ（７１（８）
は仕切板（１３）により仕切られて上下に独立した圧縮
室を形成している。この圧縮室はそれぞれベーン（図示
しない）により、吐出室及び吸入室に分割されている。In the diagram, (1) is a closed container, (2) is a closed container (1)
The electric element (3) is housed in the upper part of the electric element (2
), the eccentric part (3a
) (3b) are installed in parallel, the upper bearing (4) and the lower bearing (5)
Supported by (7) is the upper cylinder, (
8) is the lower cylinder, and the eccentric part (3a) (3
b) Rolling pistons (9) (10) fitted in
are housed, each has an inlet (7a) (8al) and is connected to a pipe (11), which is connected to a pipe (12).
is press-fitted. Upper and lower cylinders (71 (8)
are partitioned by a partition plate (13) to form upper and lower independent compression chambers. This compression chamber is divided into a discharge chamber and a suction chamber by vanes (not shown).

（１４）は密閉容器（１）の底部に貯留される潤滑油、
（１５）は密閉容器（１）の外側に固定板（１６）で固
定された冷媒貯留容器、（１７）は冷媒貯留容器（１５
）と上側シリンダ（７）の吸入口（７ａ）の管（１１）
に接続された吸入管、（１８）は同じく冷媒貯留容器（
１５）に接続された吸入管、（１９）は吸入管（１８）
に接続され、ハウジング（１９ａｌ　、弁体（１９ｂ）
及び押ばね（１９ｃ）により構成された逆上弁、（２０
）は逆止弁（１９）と下側シリンダ（８）の吸入口（８
ａ）の管（１１）に接続された吸入管である。(14) is lubricating oil stored at the bottom of the closed container (1);
(15) is a refrigerant storage container fixed to the outside of the closed container (1) with a fixing plate (16), and (17) is a refrigerant storage container (15).
) and the pipe (11) of the inlet (7a) of the upper cylinder (7)
The suction pipe (18) connected to the refrigerant storage container (
15) is connected to the suction pipe, (19) is the suction pipe (18)
connected to the housing (19al, valve body (19b)
and a reverse valve (20
) is the check valve (19) and the suction port (8) of the lower cylinder (8).
This is the suction pipe connected to the pipe (11) in a).

従来の多気筒回転式圧縮機は上記のように構成され、電
動要素（２）により駆動軸（３）が回転すると、偏心部
（３ａ）　（３ｂｌ及びローリングピストン（９）（ｌ
Ｏ）が回転し、冷媒サイクルシステムからの冷媒ガスは
、冷媒貯留容器（１５）に入り、続いて吸入管（１７）
を通じて上側シリンダ（７）に導入され、吸入管（１８
）、逆止弁（Ｉ９）及び吸入管（２０）を通じて下側シ
リンダ（８）に導入される。逆止弁（１９）は、運転停
止時圧力差によって駆動軸が逆転するのを防止するため
に設けられている。A conventional multi-cylinder rotary compressor is constructed as described above, and when the drive shaft (3) is rotated by the electric element (2), the eccentric portion (3a) (3bl and rolling piston (9) (l)
O) rotates and the refrigerant gas from the refrigerant cycle system enters the refrigerant storage container (15) and then into the suction pipe (17)
is introduced into the upper cylinder (7) through the suction pipe (18
), is introduced into the lower cylinder (8) through the check valve (I9) and the suction pipe (20). The check valve (19) is provided to prevent the drive shaft from rotating in reverse due to a pressure difference when the operation is stopped.

［発明が解決しようとする課題］ 上記のような従来の多気筒回転式圧縮機では、吸入管の
一方に逆止弁（１９）が設けられているため、電動要素
（２）が誤結線等で逆回転すると、逆止弁（１９）を備
えた下側シリンダ（８）の圧縮室の吸入側の圧力が異常
に上昇し、逆止弁（１９）の損傷、駆動軸（３）の焼付
き等が発生する可能性があるという問題点がある。[Problems to be Solved by the Invention] In the conventional multi-cylinder rotary compressor as described above, since a check valve (19) is provided on one side of the suction pipe, the electric element (2) may be connected incorrectly, etc. If it rotates in the opposite direction, the pressure on the suction side of the compression chamber of the lower cylinder (8) equipped with the check valve (19) will rise abnormally, resulting in damage to the check valve (19) and burnout of the drive shaft (3). There is a problem that sticking may occur.

この発明は上記問題点を解決するためになされたもので
、電動要素が逆回転したときも、圧縮室の吸入側圧力が
異常上昇することもなく、逆止弁の損傷も防止できるよ
うにした多気筒回転式圧縮機を提供することを目的とす
る。This invention was made to solve the above problems, and even when the electric element rotates in reverse, the pressure on the suction side of the compression chamber does not rise abnormally, and damage to the check valve can be prevented. The purpose is to provide a multi-cylinder rotary compressor.

［課題を解決するための手段］ この発明に係る多気筒回転式圧縮機は、逆止弁が設けら
れた吸入管に連結された圧縮要素の吸入口部に、圧縮要
素相互間に挟まれた仕切板を介して密閉容器内に開口す
るリリース孔を設け、仕切板にリリース孔を開閉する板
状のリリース弁を設けたものである。[Means for Solving the Problems] A multi-cylinder rotary compressor according to the present invention has a compressor sandwiched between the compression elements at the suction port of the compression element connected to the suction pipe provided with the check valve. A release hole that opens into the closed container through a partition plate is provided, and a plate-shaped release valve that opens and closes the release hole is provided in the partition plate.

［作　用］ この発明においては、逆止弁に通じる圧縮要素の吸入口
部にリリース孔を設け、仕切板に板状のリリース弁を設
けたため、圧縮室の圧力が上昇すると、リリース孔が開
き、圧縮室内の高温冷媒ガスはリリース孔から密閉容器
内へ排出され、圧縮室が異常高圧になることはない。[Function] In this invention, a release hole is provided in the suction port of the compression element leading to the check valve, and a plate-shaped release valve is provided in the partition plate, so that when the pressure in the compression chamber increases, the release hole opens. The high-temperature refrigerant gas in the compression chamber is discharged from the release hole into the closed container, so that the compression chamber does not become under abnormally high pressure.

［実施例１ 第１図及び第２図はこの発明の一実施例を示す図で、第
１図は縦断面図、第２図は要部分解斜視図であり、従来
装置と同様の部分は同一符号で示す。[Example 1] Figures 1 and 2 are views showing one embodiment of the present invention, with Figure 1 being a longitudinal sectional view and Figure 2 being an exploded perspective view of the main parts. Indicated by the same symbol.

図中、（８ｂ）は下側シリンダ（８）の外側と吸入口（
８ａ）内とを連通するリリース孔、　（１３ａ）はリリ
ース孔（８ｂ）に連通ずる案内穴で、切欠き（１３ｂ）
により密閉容器（１）内に開口している。（２５）は案
内穴ｆ１３ａ）内に遊嵌された円盤状のリリース弁であ
る。In the figure, (8b) indicates the outside of the lower cylinder (8) and the intake port (
(13a) is a guide hole that communicates with the release hole (8b), and the notch (13b)
It opens into the closed container (1). (25) is a disc-shaped release valve that is loosely fitted into the guide hole f13a).

上記のように構成された多気筒回転式圧縮機において、
電動要素（２）が誤結線等で逆回転を開始すると、駆動
油（３）も逆転し、正転時の吸入室の冷媒ガスが吸入管
（１７）　（２０１内へ流出する。吸入管（１７）につ
いては、冷媒貯留容器（１５）と連通しているため、上
側シリンダ（７）の吸入室圧力は上昇しない。しかし、
吸入管（２０）は逆上弁（１９）と連結されており、弁
体（９）が流通路を閉塞しているため、冷媒ガスの逃げ
道がなくなり、下側シリンダ（８）の吸入室圧力は上昇
する。ここで、リリース孔（８ｂ）を閉塞していたリリ
ース弁（２５）は、上記圧力によって案内穴（１３ａ）
内を上昇する。これにより、切欠き（１３ｂｌ　を介し
て吸入室と密閉容器（１）内とは連通し、吸入室で圧力
上昇を開始していた冷媒ガスは解放される。In the multi-cylinder rotary compressor configured as above,
When the electric element (2) starts to rotate in reverse due to incorrect wiring, etc., the driving oil (3) also rotates in the reverse direction, and the refrigerant gas in the suction chamber during normal rotation flows out into the suction pipe (17) (201. As for 17), since it communicates with the refrigerant storage container (15), the suction chamber pressure of the upper cylinder (7) does not increase.However,
The suction pipe (20) is connected to the reverse valve (19), and since the valve body (9) blocks the flow path, there is no escape route for the refrigerant gas, and the suction chamber pressure of the lower cylinder (8) decreases. will rise. Here, the release valve (25) which had been blocking the release hole (8b) closes the guide hole (13a) due to the above pressure.
rise within. As a result, the suction chamber and the inside of the closed container (1) communicate through the notch (13bl), and the refrigerant gas whose pressure has started to rise in the suction chamber is released.

また、電動要素（２）が正転した場合、又は正転から停
止した場合は、リリース弁（２５）は高圧の密閉容器（
１１の内圧によって、下側シリンダ（８）に押圧され、
リリース孔（８ｂ）を閉塞しているため、支障は生じな
い。In addition, when the electric element (2) rotates in the normal direction or stops from normal rotation, the release valve (25) closes the high-pressure closed container (
Pressed against the lower cylinder (8) by the internal pressure of 11,
Since the release hole (8b) is closed, no problem occurs.

なお、リリース機構としては、例えば実開昭５９−５２
０８６号公報に示されるものがあるが、リリース機構は
複雑である。これに対し、実施例のリリース弁（２５）
は単に１枚の円板であるに過ぎず、ばね等も用いられて
おらず、極めて簡単な構造である。In addition, as a release mechanism, for example,
There is a release mechanism shown in Japanese Patent No. 086, but the release mechanism is complicated. In contrast, the release valve (25) of the embodiment
It is simply a single disk, and does not use any springs or the like, and has an extremely simple structure.

［発明の効果］ 以上説明したとおりこの発明では、逆止弁が設けられた
吸入管に連結された圧縮要素の吸入口部に、圧縮要素相
互間に挟まれた仕切弁を介して密閉容器内に開口するリ
リース孔を設け、仕切板にリリース孔を開閉する板状の
リリース弁を設けたので、圧縮室の圧力が上昇すると、
リリース弁が開き、圧縮室内の高圧冷媒ガスはリリース
孔から密閉容器内へ排出され、圧縮室が異常高圧になる
ことはな（、電動要素が逆回転したときでも、逆止弁の
損傷及び駆動軸の焼付きを防止でき、かつこれが極めて
簡単な構成で実現できる効果がある。[Effects of the Invention] As explained above, in the present invention, the suction port of the compression element connected to the suction pipe provided with the check valve is connected to the inside of the closed container through the gate valve sandwiched between the compression elements. A release hole that opens to
The release valve opens, and the high-pressure refrigerant gas in the compression chamber is discharged from the release hole into the sealed container, preventing abnormally high pressure in the compression chamber (even if the electric element rotates in the opposite direction, there will be no damage to the check valve or This has the advantage of being able to prevent the shaft from seizing, and which can be achieved with an extremely simple configuration.

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

第１図はこの発明による多気筒回転式圧縮機の一実施例
を示す縦断面図、第２図は第１図の要部分解斜視図、第
３図は従来の多気筒回転式圧縮機を示す縦断面図である
。 図中、　（１）は密閉容器、　（２）は電動要素、　（
６）は圧縮要素、（８ａ）は吸入口、（８ｂ）はリリー
ス孔、（１３）は仕切板、　（１３ａ）は案内穴、　（
１３ｂ）は切欠き、（１５）は冷媒貯留容器、（１７１
（Ｉｌｌ）は吸入管、（１９）は逆止弁、（２０）は吸
入管、（２５）はリリース弁である。 なお、図中同一符号は同一部分を示す。FIG. 1 is a longitudinal sectional view showing an embodiment of a multi-cylinder rotary compressor according to the present invention, FIG. 2 is an exploded perspective view of the main part of FIG. 1, and FIG. 3 is a diagram showing a conventional multi-cylinder rotary compressor. FIG. In the figure, (1) is a closed container, (2) is an electric element, (
6) is a compression element, (8a) is an inlet, (8b) is a release hole, (13) is a partition plate, (13a) is a guide hole, (
13b) is a notch, (15) is a refrigerant storage container, (171
(Ill) is a suction pipe, (19) is a check valve, (20) is a suction pipe, and (25) is a release valve. Note that the same reference numerals in the figures indicate the same parts.

Claims (1)

【特許請求の範囲】[Claims] 　密閉容器内に仕切板を挟んで配設され電動要素により
駆動される圧縮要素を収納し、上記密閉容器に隣接して
冷媒貯留容器を配置し、この冷媒貯留容器と上記密閉容
器の圧縮要素とをそれぞれ吸入管で連結し、これらの吸
入管の内少なくとも一つに逆止弁を設けた圧縮機におい
て、上記逆止弁が設けられた吸入管に連結された上記圧
縮要素の吸入口部に上記仕切板を介して上記密閉容器内
に開口するリリース孔を設け、上記仕切板に上記リリー
ス孔を開閉する板状のリリース弁を設けたことを特徴と
する多気筒回転式圧縮機。A compression element arranged in a closed container with a partition plate in between and driven by an electric element is housed, a refrigerant storage container is arranged adjacent to the closed container, and the refrigerant storage container and the compression element of the closed container are connected. are connected to each other by suction pipes, and at least one of these suction pipes is provided with a check valve, and the suction port of the compression element connected to the suction pipe provided with the check valve is A multi-cylinder rotary compressor, characterized in that a release hole opening into the closed container through the partition plate is provided, and a plate-shaped release valve for opening and closing the release hole is provided in the partition plate.
JP983390A 1990-01-19 1990-01-19 Multi-cylinder rotary compressor Pending JPH03213679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP983390A JPH03213679A (en) 1990-01-19 1990-01-19 Multi-cylinder rotary compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP983390A JPH03213679A (en) 1990-01-19 1990-01-19 Multi-cylinder rotary compressor

Publications (1)

Publication Number Publication Date
JPH03213679A true JPH03213679A (en) 1991-09-19

Family

ID=11731133

Family Applications (1)

Application Number Title Priority Date Filing Date
JP983390A Pending JPH03213679A (en) 1990-01-19 1990-01-19 Multi-cylinder rotary compressor

Country Status (1)

Country Link
JP (1) JPH03213679A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003269804A (en) * 2002-03-13 2003-09-25 Sanyo Electric Co Ltd Refrigerant circuit device
EP1344938A3 (en) * 2002-03-13 2004-06-09 Sanyo Electric Co., Ltd. Multistage rotary compressor and refrigeration circuit system
CN105782041A (en) * 2016-04-28 2016-07-20 珠海格力节能环保制冷技术研究中心有限公司 Multi-stage compressor, air conditioner system and control method of multi-stage compressor
US20220290672A1 (en) * 2020-10-14 2022-09-15 Guangdong Meizhi Compressor Co., Ltd. Compressor and refrigeration system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003269804A (en) * 2002-03-13 2003-09-25 Sanyo Electric Co Ltd Refrigerant circuit device
EP1344938A3 (en) * 2002-03-13 2004-06-09 Sanyo Electric Co., Ltd. Multistage rotary compressor and refrigeration circuit system
EP2233742A3 (en) * 2002-03-13 2012-08-08 Sanyo Electric Co., Ltd. Multistage rotary compressor and refrigeration circuit system
CN105782041A (en) * 2016-04-28 2016-07-20 珠海格力节能环保制冷技术研究中心有限公司 Multi-stage compressor, air conditioner system and control method of multi-stage compressor
US20220290672A1 (en) * 2020-10-14 2022-09-15 Guangdong Meizhi Compressor Co., Ltd. Compressor and refrigeration system
US12085079B2 (en) * 2020-10-14 2024-09-10 Guangdong Meizhi Compressor Co., Ltd. Compressor and refrigeration system

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