JPS60119397A - Sealed-type screw compressor - Google Patents
Sealed-type screw compressorInfo
- Publication number
- JPS60119397A JPS60119397A JP22616783A JP22616783A JPS60119397A JP S60119397 A JPS60119397 A JP S60119397A JP 22616783 A JP22616783 A JP 22616783A JP 22616783 A JP22616783 A JP 22616783A JP S60119397 A JPS60119397 A JP S60119397A
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- motor
- working fluid
- inlet
- casing
- 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
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
- 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
-
- 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
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
Abstract
Description
【発明の詳細な説明】
本発明は冷凍機又は空気調和機等に使用される密閉型ス
クリュ圧縮機に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hermetic screw compressor used in refrigerators, air conditioners, etc.
従来のこの種の圧縮機は第１図に示すように、圧縮機（
１，１を収納したケーシング（２）の上方にモータ（３
）を装置し、該モータ（３）の出力軸（４）と圧縮機（
１）の入力軸（５）をカップリング（６）により接続し
圧縮機（１）を作動せしめている。作動流体は入口（力
から入り、圧縮機（＋、）により圧縮されてケーシング
（２）内に排出され、デミスタ（８）により微細な油粒
を除去された後出口（９）から吐出される。A conventional compressor of this type is a compressor (
The motor (3) is placed above the casing (2) that houses the motors (1, 1).
), and the output shaft (4) of the motor (3) and the compressor (
1) is connected to the input shaft (5) by a coupling (6) to operate the compressor (1). The working fluid enters from the inlet (force), is compressed by the compressor (+,) and discharged into the casing (2), and is discharged from the outlet (9) after fine oil droplets are removed by the demister (8). .
しかし、これではケーシング（２）内が高圧となるのに
対し、該ケーシング（２）には圧縮機（１）の入力軸（
５）が貫通しているため、シールするのが難かしく、作
動流体の漏れ等ドラフルが多い。However, this results in high pressure inside the casing (2), while the input shaft (1) of the compressor (1) is located inside the casing (2).
5) is penetrated, so it is difficult to seal, and there are many draughts such as leakage of working fluid.
そのため、第２図に示すようにモータ（３）と圧縮機（
１）とを連結してケーシング００内に組み込み、該ケー
シング（２）を密閉容器Ｑｌ）内に収納し、シール性を
高めている。Therefore, as shown in Figure 2, the motor (3) and compressor (
1) are connected and assembled into the casing 00, and the casing (2) is housed in a closed container Ql) to improve sealing performance.
しかし、これだと密閉容器０υの頂部に入口（７）が設
けられ且つモータ（３）が上置となるため、入口（力か
ら入った作動流体が圧縮機（１）に入るまでの間、回転
により発熱したモータ（３）と接触して温度が上昇し、
熱膨張してしまう。従って、圧縮機（ＩＪに入る作動流
体が予め熱膨張してしまうので、圧縮機（１）による圧
縮効率が実質的に低下してしまうこととなる。However, in this case, the inlet (7) is provided at the top of the closed container 0υ, and the motor (3) is placed above, so that the inlet (7) is placed at the top of the airtight container. The temperature rises due to contact with the motor (3), which generates heat due to rotation.
It will thermally expand. Therefore, since the working fluid entering the compressor (IJ) is thermally expanded in advance, the compression efficiency of the compressor (1) is substantially reduced.
そのため、第３図に示すように密閉容器αη内に、モー
タ（３）及び圧縮機（１）を夫々上下に一体化して収納
し、入口（７）を密閉容器σηの下部（と設け、入口（
７）から入った作動流体を、直ちに圧縮機（１）で圧縮
するようにしている。Therefore, as shown in Fig. 3, the motor (3) and compressor (1) are housed in a sealed container αη in the upper and lower parts, respectively, and the inlet (7) is provided at the bottom of the sealed container ση. (
7) is immediately compressed by the compressor (1).
しかし、圧縮された作動流体は潤滑油と共にモータ（３
）の内部を通って上昇し、モータ（３）の外側を下降し
て排出口ａ■から排出され、圧縮された作動流体は密閉
容器αＤ内を上昇して該密閉容器０ηの頂部の出口（９
）から排出され、又分離した潤滑油は密閉容器Ｃ１，）
内下部に溜るため、作動流体の流れが複雑で潤滑油を分
離する際構造が問題となる。However, the compressed working fluid is transferred to the motor (3) along with lubricating oil.
), descends outside the motor (3), and is discharged from the discharge port a. The compressed working fluid rises within the closed container αD and reaches the outlet at the top of the closed container 0η. 9
The lubricating oil discharged from ) and separated is placed in a closed container C1,)
Because it accumulates in the inner lower part, the flow of the working fluid is complicated and the structure becomes a problem when separating the lubricating oil.
本発明は上述の従来の欠点を除去することを目的として
為したもので、圧縮機が上にモータが下になるよう一体
化して密閉容器内に収納し、入口から入る作動流体を直
ちに圧縮機で圧縮するようにすると共に内部構造を簡略
化することにより、圧縮効率を高め且つ潤滑油の分離を
確実になし得る密閉型スクリュ圧縮機にかかるものであ
る。The present invention has been made with the aim of eliminating the above-mentioned conventional drawbacks.The present invention is designed to eliminate the above-mentioned drawbacks of the conventional art. The present invention relates to a hermetic screw compressor that can improve compression efficiency and ensure separation of lubricating oil by compressing the oil and simplifying the internal structure.
以下、本発明の実施例を図面を参照しつつ説明する。Embodiments of the present invention will be described below with reference to the drawings.
第４図は本発明の一実施例であり、略円筒状の内側ケー
シング（へ）内下部にモータ（３）を固定し、該内側ケ
ーシング０：！Ｉ内上側に圧縮機（１）を固定し、該モ
ータ（３）の出力軸（４）と該圧縮機（１）の入力軸（
５）とを相互に嵌合せしめて連結し、該連結部０→を前
記内側ケーシングａ、ｌＩ内中間部の軸受α０で支持し
である。該内側ケーシング０４の上端部に蓋ｑＯを装着
しボルト０″Ｉ）にて固定し、前記圧縮機（１）の入力
軸（５）の上端部を前記蓋（４）にて軸受支持しである
。FIG. 4 shows an embodiment of the present invention, in which a motor (3) is fixed to the lower part of a substantially cylindrical inner casing, and the inner casing 0:! A compressor (1) is fixed to the upper side inside I, and the output shaft (4) of the motor (3) and the input shaft (
5) are fitted and connected to each other, and the connecting portion 0→ is supported by a bearing α0 located at an intermediate portion within the inner casings a and lI. A lid qO is attached to the upper end of the inner casing 04 and fixed with a bolt 0''I), and the upper end of the input shaft (5) of the compressor (1) is supported by a bearing on the lid (4). be.
蓋（イ）を装着した内側ケーシング時を外側ケーシング
Ｑ８）内に収納し、該外側ケーシング０８）の上端の開
口部に設けた環状座００にポル１１）にて締め付は固定
し、該外側ケーシングα８）内を密閉する。該外側ケー
シング（ト）の外側部に入口（７）を設け、該入口（７
）と前記圧縮機（１）下部の入口（２１）との間をパイ
プ（ハ）で直結し、圧縮機（１）内に作動流体を導入し
得るようにする。該圧縮機（１）の外周と内側ケーシン
グ０３の内周との間に流路（ハ）を設け、圧縮機（１）
上部に設けた出口（ハ）から排出された高圧の作動流体
がモータ（３）側へ流れるようにしである。該モータ（
３）の外周と内側ケーシングＣ１３の内周との間に流路
（ハ）を設け、更に内側ケーシング０４と外側ケーシン
グ（ト）との間の円筒状隙間翰の上部に円筒（イ）を配
置し、該円筒（イ）の上端を前記環状座０りの下面に固
着し、該円筒（イ）と外側ケーシングσ８）との間の環
状隙間（ハ）に油分離ニレメン１［を環状に配設し、該
環状隙間（ハ）の上部に環状の高圧流体溜り（ト）を形
成し、該高圧流体溜り一から外側ケーシングＱ８）側壁
に設けた出口（９）までパイプ０］）を配設しである。The inner casing with the lid (A) attached is stored in the outer casing Q8), and the annular seat 00 provided in the opening at the upper end of the outer casing 08) is tightened with a bolt 11). Seal the inside of the casing α8). An inlet (7) is provided on the outer side of the outer casing (T), and the inlet (7)
) and the inlet (21) at the bottom of the compressor (1) are directly connected by a pipe (c) so that working fluid can be introduced into the compressor (1). A flow path (c) is provided between the outer periphery of the compressor (1) and the inner periphery of the inner casing 03, and the compressor (1)
The high-pressure working fluid discharged from the outlet (c) provided at the top flows toward the motor (3). The motor (
A flow path (C) is provided between the outer periphery of 3) and the inner periphery of the inner casing C13, and a cylinder (A) is further placed above the cylindrical gap between the inner casing 04 and the outer casing (G). Then, the upper end of the cylinder (A) is fixed to the lower surface of the annular seat 0, and an oil separating element 1 [is arranged in an annular manner in the annular gap (C) between the cylinder (A) and the outer casing σ8). An annular high-pressure fluid reservoir (G) is formed in the upper part of the annular gap (C), and a pipe 0) is installed from the high-pressure fluid reservoir 1 to the outlet (9) provided on the side wall of the outer casing Q8). It is.
図中、に）は潤滑油タンクを示す。In the figure, ) indicates a lubricating oil tank.
以上のように構成したので、モータ（３）を駆動して圧
縮機（］〕の入力軸（５）を回転すると、入口（７）か
ら作動流体が吸入されパイプ＠を経て入口ｅ１）から圧
縮機（］）内に直ちに入り圧縮され、出口（ハ）から高
圧流体として排出される。With the above configuration, when the motor (3) is driven to rotate the input shaft (5) of the compressor (), the working fluid is sucked in from the inlet (7) and compressed from the inlet e1 via the pipe @. It immediately enters the machine (]), is compressed, and is discharged from the outlet (c) as a high-pressure fluid.
該高圧流体は多量に油滴、霧状の油粒子を含んだ状態で
、圧縮機（］）と内側ケーシング（１，３との間の流路
（イ）を下降し、モータ（３）周囲の流路（ハ）を更に
下降して回転により発熱したモータ（３）を冷却し内側
ケーシング（ハ）外に排出される。このとき、油滴は高
圧流体から分離して外側ケーシング（ト）底部の潤滑油
タンク６２に落下し貯溜される。The high-pressure fluid, containing a large amount of oil droplets and mist oil particles, descends through the flow path (a) between the compressor (]) and the inner casing (1, 3) and flows around the motor (3). The motor (3), which generates heat due to rotation, is further lowered down the flow path (c) and is discharged outside the inner casing (c).At this time, the oil droplets are separated from the high-pressure fluid and flow into the outer casing (g). It falls into the lubricating oil tank 62 at the bottom and is stored there.
内側ケーシングα東外に排出された高圧作動流体は円筒
状隙間（ハ）を上昇し、油分離エレメント（ホ）により
霧状の油粒子が除去されて高圧流体溜り（１）に移行し
、該高圧流体溜り（ト）からパイプ０１）を経て出口（
９）から吐出される。The high-pressure working fluid discharged to the east and outside of the inner casing α rises through the cylindrical gap (c), and the mist oil particles are removed by the oil separation element (e) and transferred to the high-pressure fluid reservoir (1). From the high pressure fluid reservoir (g) through pipe 01) to the outlet (
9).
以上の作動状態において、モータ（３）及び圧縮機（Ｌ
ｌの軸受部は圧縮された作動流体中に含まれる油により
潤滑され、モータ（３）及び圧縮機＋１１は円滑に運転
される。In the above operating conditions, the motor (3) and the compressor (L
The bearing portion of 1 is lubricated by oil contained in the compressed working fluid, and the motor (3) and compressor +11 are operated smoothly.
第５図は本発明の他の実施例であり、前記実施例と略同
様の構成において、内部を上下に仕切った円筒状の内側
ケーシングｕ印内に圧縮機（１）とモータ（３）を夫々
上下に配量収納し、上蓋Ｇ′３にて圧縮機（１）の入力
軸（５）上端部を支持し、中仕切■及び下蓋（ハ）にて
モータ（３）の出力軸（４）の上下端部を夫々支持しで
ある。FIG. 5 shows another embodiment of the present invention, in which a compressor (1) and a motor (3) are housed inside a cylindrical inner casing marked with a U mark, which is partitioned into upper and lower parts, in a configuration substantially similar to that of the previous embodiment. The input shaft (5) of the compressor (1) is supported by the upper cover G'3, and the output shaft (5) of the motor (3) is supported by the inner partition (■) and the lower cover (C). The upper and lower ends of 4) are supported respectively.
前記上蓋（ハ）に入口（力を設け、作動流体が圧縮機（
１）内に直ちに入り得るようにし、中仕切■に孔（至）
を設けると共に内側ケーシング曽の下部に出口＠を設け
、圧縮機（１）出口（ハ）から排出された高圧流体が孔
（ハ）を通りモータ（３）の周囲を下降して出口（ロ）
から排出するようにしである。The upper cover (C) is provided with an inlet (force), and the working fluid is supplied to the compressor (
1) Make a hole (to) in the middle partition so that it can be entered immediately.
At the same time, an outlet @ is provided at the lower part of the inner casing so that the high pressure fluid discharged from the outlet (c) of the compressor (1) passes through the hole (c) and descends around the motor (3) to the outlet (b).
It should be discharged from the tank.
該内側ケーシングσつと外側ケーシング０８）との間の
円筒状隙間（ハ）の上部に油分離エレメント（イ）を現
状に配設し、該円筒状隙間（ハ）の上部に環状の高圧流
体溜りＬＡｆ形成しである。図中０］）はパイプ、（９
）は出口を示す。An oil separation element (A) is currently installed in the upper part of the cylindrical gap (C) between the inner casing σ and the outer casing 08), and an annular high-pressure fluid reservoir is installed in the upper part of the cylindrical gap (C). LAf is not formed. 0]) in the figure is a pipe, (9
) indicates an exit.
本実施例の場合には、上蓋（ト）の入口（力から吸入さ
れた作動流体は直ちに圧縮機（１）に入り、圧縮されて
出口（ハ）から出た後下降し、孔（至）を通ってモータ
（３）の周囲を流れて発熱したモータ（３）を冷却し、
出口（（７）から内側ケーシングα■外に排出される。In the case of this embodiment, the working fluid sucked in from the inlet (force) of the upper cover (g) immediately enters the compressor (1), is compressed, exits from the outlet (c), and then descends to the hole (to). It flows around the motor (3) and cools the motor (3) which generates heat.
It is discharged from the outlet ((7) to the outside of the inner casing α■.
このとき油滴が分離して潤滑油タンク０りに溜り、高圧
流体は円筒状隙間（ハ）を上昇し、油分離エレメント（
４で霧状油粒子が分離された後高圧流体溜り（１）に溜
り、出口（９）から吐出される。At this time, the oil droplets separate and accumulate in the lubricating oil tank 0, and the high-pressure fluid rises through the cylindrical gap (c) and the oil separation element (
After the atomized oil particles are separated in step 4, they accumulate in a high-pressure fluid reservoir (1) and are discharged from an outlet (9).
なお、本発明の密閉型スクリュ圧縮機は上述の実施例の
みに限定されるものではなく本発明の要旨を逸脱しない
範囲内において種々変更を加え得ることは勿論である。It should be noted that the hermetic screw compressor of the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various changes may be made without departing from the gist of the present invention.
以上述べたように本発明の密閉型スクリュ圧縮機によれ
ば、下記の如き種々の優れた効果を発揮する。As described above, the hermetic screw compressor of the present invention exhibits various excellent effects as described below.
（Ｉ） 外部から導入される作動流体は直ちに圧縮機に
入って圧縮されるので、従来のように発熱したモータと
接触して熱膨張した後圧縮される構造でないため、圧縮
効率が低下することなく高効率である。(I) Since the working fluid introduced from the outside immediately enters the compressor and is compressed, it does not have a structure in which it comes into contact with the motor that generates heat, thermally expands, and then is compressed, resulting in a decrease in compression efficiency. It is highly efficient.
（ＩＩ） 作動流体の流れがシンプルになるので、内部
構造を簡略化することができ、潤滑油の分離も容易にな
し得る。(II) Since the flow of the working fluid is simplified, the internal structure can be simplified and the lubricating oil can be easily separated.
（ＩｉＤ 圧縮効率を高められ且つ内部構造を簡略化し
得るので、小型軽量化でき信頼性も向上できる。従って
、従来形に比べて３０〜４０優製作コストの低減を図り
得る。(IiD) Since the compression efficiency can be increased and the internal structure can be simplified, the size and weight can be reduced and the reliability can be improved. Therefore, the manufacturing cost can be reduced by 30 to 40 yu compared to the conventional type.
【図面の簡単な説明】
第１図は従来のスクリュ圧縮機の一例の説明図、第２図
は従来のスクリュ圧縮機の他の例の説明図、第６図は従
来のスクリュ圧縮機の更に他の例の説明図、第４図は本
発明の密閉型スクリュ圧縮機の説明図、第５図は本発明
の密閉型スクリュ圧縮機の他の例の説明図である。
（１）は圧縮機、（３）はモータ、（力は入口、（９）
は出口、Ｑ３４ま内側ケーシング、（ト）は外側ケーゾ
ング、（イ）は円筒状隙間、翰は油分離エレメント、（
１）は高圧流体溜りを示す。
特許出願人
石川島播磨重工業株式会社[Brief Description of the Drawings] Fig. 1 is an explanatory diagram of an example of a conventional screw compressor, Fig. 2 is an explanatory diagram of another example of a conventional screw compressor, and Fig. 6 is an explanatory diagram of another example of a conventional screw compressor. FIG. 4 is an explanatory diagram of another example of the hermetic screw compressor of the present invention, and FIG. 5 is an explanatory diagram of another example of the hermetic screw compressor of the present invention. (1) is the compressor, (3) is the motor, (force is the inlet, (9)
is the outlet, Q34 is the inner casing, (G) is the outer casing, (A) is the cylindrical gap, the handle is the oil separation element, (
1) indicates a high pressure fluid reservoir. Patent applicant Ishikawajima Harima Heavy Industries Co., Ltd.
Claims (1)
器の該内側ケーソンク内に、上側に圧縮機を配置すると
共に下側に前記圧縮機を駆動するモータを配置し、前記
密閉容器に入口を設け、該人口から吸入した作動流体を
圧縮機で圧縮し、圧縮した高圧作動流体を前記モータの
冷却に用いた後密閉容器外に吐出するよう構成したこと
を特徴とする密閉型スクリュ圧縮機。1) A compressor is arranged on the upper side and a motor for driving the compressor is arranged on the lower side in the inner caisson of a sealed container consisting of an outer casing and an inner casing, an inlet is provided in the sealed container, and A hermetic screw compressor, characterized in that a compressor compresses a working fluid inhaled from a human body, and the compressed high-pressure working fluid is used for cooling the motor and then discharged out of the closed container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22616783A JPS60119397A (en) | 1983-11-30 | 1983-11-30 | Sealed-type screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22616783A JPS60119397A (en) | 1983-11-30 | 1983-11-30 | Sealed-type screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60119397A true JPS60119397A (en) | 1985-06-26 |
Family
ID=16840917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22616783A Pending JPS60119397A (en) | 1983-11-30 | 1983-11-30 | Sealed-type screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60119397A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850816A (en) * | 1988-06-30 | 1989-07-25 | Bristol Compressors, Inc. | Refrigerant gas compressor unit |
| US4913634A (en) * | 1986-07-01 | 1990-04-03 | Hitachi, Ltd. | Screw compressor with slide valve movement preventing structure |
| US4995791A (en) * | 1988-11-25 | 1991-02-26 | Bristol Compressors, Inc. | Refrigerant gas compressor unit |
| WO2002014694A1 (en) * | 2000-08-16 | 2002-02-21 | Bitzer Kühlmaschinenbau Gmbh | Screw-type compressor |
| EP1207306A2 (en) * | 2000-11-17 | 2002-05-22 | FINI ELETTROCOSTRUZIONI MECCANICHE S.p.A. | Screw compressor |
| JP2010223145A (en) * | 2009-03-25 | 2010-10-07 | Hitachi Appliances Inc | Screw compressor |
| US8172559B2 (en) | 2007-12-25 | 2012-05-08 | Calsonic Kansei Corporation | Horizontal type electric compressor |
| WO2015083194A1 (en) * | 2013-12-02 | 2015-06-11 | 株式会社飯塚鉄工所 | Screw vacuum pump |
| WO2015128906A1 (en) * | 2014-02-28 | 2015-09-03 | 国立大学法人東北大学 | Oil supply component for screw exhaust pump, and screw exhaust pump provided with said component |
| CN106014993A (en) * | 2016-06-30 | 2016-10-12 | 杭州久益机械股份有限公司 | Integral air compressor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5749757A (en) * | 1980-09-09 | 1982-03-23 | Koshio Hatsue | Supporting method of solar energy collecting device |
| JPS58160587A (en) * | 1982-03-19 | 1983-09-24 | Hitachi Ltd | Enclosed motor driven compressor |
-
1983
- 1983-11-30 JP JP22616783A patent/JPS60119397A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5749757A (en) * | 1980-09-09 | 1982-03-23 | Koshio Hatsue | Supporting method of solar energy collecting device |
| JPS58160587A (en) * | 1982-03-19 | 1983-09-24 | Hitachi Ltd | Enclosed motor driven compressor |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4913634A (en) * | 1986-07-01 | 1990-04-03 | Hitachi, Ltd. | Screw compressor with slide valve movement preventing structure |
| US4850816A (en) * | 1988-06-30 | 1989-07-25 | Bristol Compressors, Inc. | Refrigerant gas compressor unit |
| US4995791A (en) * | 1988-11-25 | 1991-02-26 | Bristol Compressors, Inc. | Refrigerant gas compressor unit |
| WO2002014694A1 (en) * | 2000-08-16 | 2002-02-21 | Bitzer Kühlmaschinenbau Gmbh | Screw-type compressor |
| EP1207306A2 (en) * | 2000-11-17 | 2002-05-22 | FINI ELETTROCOSTRUZIONI MECCANICHE S.p.A. | Screw compressor |
| EP1207306A3 (en) * | 2000-11-17 | 2003-01-02 | FINI ELETTROCOSTRUZIONI MECCANICHE S.p.A. | Screw compressor |
| US8172559B2 (en) | 2007-12-25 | 2012-05-08 | Calsonic Kansei Corporation | Horizontal type electric compressor |
| JP2010223145A (en) * | 2009-03-25 | 2010-10-07 | Hitachi Appliances Inc | Screw compressor |
| WO2015083194A1 (en) * | 2013-12-02 | 2015-06-11 | 株式会社飯塚鉄工所 | Screw vacuum pump |
| WO2015128906A1 (en) * | 2014-02-28 | 2015-09-03 | 国立大学法人東北大学 | Oil supply component for screw exhaust pump, and screw exhaust pump provided with said component |
| JPWO2015128906A1 (en) * | 2014-02-28 | 2017-03-30 | 国立大学法人東北大学 | Oil supply part for screw exhaust pump and screw exhaust pump provided with the parts |
| CN106014993A (en) * | 2016-06-30 | 2016-10-12 | 杭州久益机械股份有限公司 | Integral air compressor |
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