JPH04175488A - Screw compressor - Google Patents
Screw compressorInfo
- Publication number
- JPH04175488A JPH04175488A JP30499390A JP30499390A JPH04175488A JP H04175488 A JPH04175488 A JP H04175488A JP 30499390 A JP30499390 A JP 30499390A JP 30499390 A JP30499390 A JP 30499390A JP H04175488 A JPH04175488 A JP H04175488A
- Authority
- JP
- Japan
- Prior art keywords
- discharge port
- small cross
- casing
- space
- cross sectional
- 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
Links
- 230000003313 weakening effect Effects 0.000 abstract description 2
- 230000008961 swelling Effects 0.000 abstract 4
- 230000000694 effects Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【発明の詳細な説明】
（！集土の利用分野）
本発明は、油冷式およびオイルフリー式のスクリュ圧縮
機に関するものである。DETAILED DESCRIPTION OF THE INVENTION (! FIELD OF APPLICATION OF SOIL COLLECTION) The present invention relates to oil-cooled and oil-free screw compressors.
（従来の技術）
近年、作業環境の改善のためにスクリュ圧縮機の低騒音
化に対するユーザの要求はますます高まりつつある。(Prior Art) In recent years, user demands for lower noise from screw compressors have been increasing in order to improve the working environment.
そこで、従来スクリュ圧縮機の消音構造として、少なく
とも一つの絞り部を有する部材を介在させた消音装置を
吸込口、或は吐出口に取付けたもの（特開昭５４−５４
３０９号公報）、吐出口側に続く高圧チャンバ内におけ
るガス流路に消音室を形成する偏平マフラを介在させた
もの（特開昭５６−５４９８７号公報）等が提案されて
いる。Therefore, as a conventional sound muffling structure for a screw compressor, a sound muffling device with a member having at least one constricted part is attached to the suction port or the discharge port (Japanese Patent Laid-Open No. 54-54).
309 (Japanese Patent Application Laid-open No. 56-54987), and one in which a flat muffler forming a silencing chamber is interposed in a gas flow path in a high-pressure chamber following the discharge port side (Japanese Patent Laid-Open No. 56-54987) has been proposed.
（発明が解決しようとする課題）
上記従来のいずれの装置であっても消音構造の性能とそ
の容積とは密接に関係し、性能を向上させようとすれば
、必然的に大きなスペースが必要となっていた。しかし
、占有スペースの縮小に対するユーザの要求も強く、小
形でかつ性能がよい消音構造の開発が望まれていた。(Problems to be Solved by the Invention) In any of the above conventional devices, the performance of the sound deadening structure and its volume are closely related, and if the performance is to be improved, a large space is inevitably required. It had become. However, there is a strong demand from users for a reduction in the occupied space, and there has been a desire for the development of a small-sized, high-performance sound-deadening structure.
本発明は、上記要望に応えることを課題としてなされた
もので、消音性能の向上と小形化を可能としたスクリュ
圧縮機を提供しようとするものである。The present invention has been made in response to the above-mentioned needs, and aims to provide a screw compressor that has improved noise reduction performance and can be made smaller.
（課題を解決するための手段）
上記課題を解決するために、本発明は、吐出ポートに連
続して膨出空間と、上記吐出ポートから上記膨出空間に
流入した吐出ガスをＬ形に方向転換させて流す小断面流
路とをスクリュロータと同−ケーシングに設けて形成し
た。(Means for Solving the Problems) In order to solve the above problems, the present invention includes an expansion space continuous to a discharge port, and a direction in which the discharge gas flowing from the discharge port into the expansion space is directed in an L shape. A small cross-section channel for diverting the flow was provided in the same casing as the screw rotor.
（作用）
上記のように形成することにより、吐出ポートより吐出
された圧縮ガスが流れ方向をＬ形に転換する際にケーシ
ング内壁に当たるため、また吐出空間が一旦拡がり、そ
の後狭まることでガスの流動抵抗が変化し、ガス分子の
反射が起こるため、音が伝播し難くなるとともに、ケー
シング外に別途消音手段を設ける必要がなくなり装置全
体が小形になる。(Function) By forming as above, the compressed gas discharged from the discharge port hits the inner wall of the casing when the flow direction changes to an L shape, and the discharge space expands once and then narrows, resulting in gas flow. Since the resistance changes and gas molecules are reflected, it becomes difficult for sound to propagate, and there is no need to provide a separate sound damping means outside the casing, making the entire device more compact.
（実施例） 次に、本発明の一実施例を図面にしたがって説明する。(Example) Next, one embodiment of the present invention will be described with reference to the drawings.
第１図は、本発明の第１実施例に係るスクリュ圧縮機を
示し、縦方向に並列配置した互いに噛み合う雌雄一対の
スクリュロータ１．２を回転可能に収納したケーシング
３の吐出ポート４に連続して第［図中において吐出ポー
ト４から横方向に膨出空間５が形威しである。また、こ
の膨出空間５に続いて縦方向にスクリュロータ１．２を
収納したロータ室の壁部に沿って小断面流路６がスクリ
ュロータ！、２と同一のケーシング３に形威しである。FIG. 1 shows a screw compressor according to a first embodiment of the present invention, in which a pair of male and female screw rotors 1.2 arranged vertically in parallel and meshing with each other are connected to a discharge port 4 of a casing 3 rotatably housed. In the figure, a bulging space 5 extends from the discharge port 4 in the lateral direction. Further, following this bulging space 5, a small cross-section flow path 6 is formed longitudinally along the wall of the rotor chamber housing the screw rotor 1.2. , 2 is similar to the casing 3.
ここで、小断面なる表現は流路断面積が膨出空間５にお
けるものと比べて不連続的に小さくなっているという意
味で使用しである。Here, the expression "small cross section" is used to mean that the cross sectional area of the flow path is discontinuously smaller than that in the bulging space 5.
そして、このように圧縮ガスを吐出ポート４から容積の
大きい膨出空間５に吐出して、その壁部に衝突させ、方
向転換させた後、これに比べて断面積の小さい小断面流
路６に導くことにより音の伝播を弱め、騒音を低減させ
るようになっている。Then, after the compressed gas is discharged from the discharge port 4 into the large-volume expansion space 5, collides with the wall thereof, and is changed in direction, the compressed gas is discharged into the small-section flow path 6, which has a small cross-sectional area compared to this. It is designed to weaken the propagation of sound and reduce noise.
即ち、圧縮ガスを上記壁部に衝突させることと、圧縮ガ
スの流路断面積を変えることにより、ガスの流動抵抗を
変化させ、ガス分子の反射を起こさせることとにより音
の伝播を弱めている。That is, by colliding the compressed gas with the wall and changing the cross-sectional area of the flow path of the compressed gas, the flow resistance of the gas is changed and the gas molecules are reflected, thereby weakening the propagation of sound. There is.
また、膨出空間５から小断面流路６をロータ室の壁部に
沿わせて、スクリュロータ１，２と同一ケーシング３に
形成することにより別途消音構造を設けるものに比して
装置全体が小形となっている。In addition, by forming the small cross-section flow path 6 from the bulging space 5 along the wall of the rotor chamber in the same casing 3 as the screw rotors 1 and 2, the entire device can be made smaller compared to the case where a separate noise-dampening structure is provided. It is small in size.
なお、油冷式の圧縮機の場合は、ケーシング３の下方に
圧縮ガスとともに吐出された油を分離して回収する図示
しない油タンクが設けられるが、この場合には二点鎖線
で示すように小断面流路６に、さらにこれよりも小断面
の細管７を油タンク内にまで延設した状態で設けるのが
騒音低減のために好ましい。In the case of an oil-cooled compressor, an oil tank (not shown) is provided below the casing 3 to separate and recover the oil discharged together with the compressed gas. In order to reduce noise, it is preferable to provide a thin tube 7 having a smaller cross section in the small cross-section channel 6 and extending into the oil tank.
第２図は、本発明の第２実施例に係るスクリュ圧縮機を
示し、横方向に並列配置した互いに噛み合う雌雄一対の
スクリュロータ１．２（図面には二つのうちの一方のみ
が示しである）を回転可能に収納したケーシング３の吐
出ポート４に連続して、第２図において吐出ポート４か
ら縦方向に膨出空間５が形成しである。また、この膨出
空間５に続いて、横方向に、上記第１実施例と同様小断
面流路６が膨出空間５とともにスクリュロータ１．２゛
と同一のケーシング３に形成しである。FIG. 2 shows a screw compressor according to a second embodiment of the present invention, in which a pair of male and female screw rotors 1.2 (only one of the two is shown in the drawing) are arranged laterally in parallel and mesh with each other. ) is rotatably housed in the casing 3, and a bulging space 5 is formed in the vertical direction from the discharge port 4 in FIG. Further, following this bulging space 5, a small cross-section flow passage 6 is formed laterally in the same casing 3 as the screw rotor 1.2'' together with the bulging space 5, as in the first embodiment.
そして、このように形成することにより第１実施例の場
合と同様の作用により騒音を低減させるとともに、装置
全体が小形になるようにしである。By forming the device in this way, noise can be reduced by the same effect as in the first embodiment, and the entire device can be made smaller.
また、この装置が油冷式の場合には、第１実施例の場合
と同様に、二点鎖線で示すように、小断面流路６に続け
て図示しない油タンクの内部にまで延設した細管７を設
けるのが好ましい。In addition, when this device is an oil-cooled type, as in the case of the first embodiment, as shown by the two-dot chain line, the small cross-section flow path 6 is extended to the inside of the oil tank (not shown). Preferably, a capillary tube 7 is provided.
（発明の効果）
以上の説明より明らかなように、本発明によれば、吐出
ポートに連続して膨出空間と、上記吐出ポートから上記
膨出空間に流入した吐出ガスをＬ形に方向転換させて流
す小断面流路とをスクリュロータと同一ケーシングに設
けて形成しである。(Effects of the Invention) As is clear from the above description, according to the present invention, there is a bulging space continuous to the discharge port, and the direction of the discharged gas flowing from the discharge port into the bulging space is changed into an L shape. A small cross-section flow path through which the fluid flows is provided in the same casing as the screw rotor.
このため、吐出ポートから出た圧縮ガスがケーシング内
壁に当たることにより、また流路断面積が変わることに
より、ガスの流動抵抗が変化し、ガス分子の反射が生じ
、音が伝播し難くなり、騒音を低減させることができる
。For this reason, when the compressed gas coming out of the discharge port hits the inner wall of the casing and the cross-sectional area of the flow path changes, the flow resistance of the gas changes, causing reflection of gas molecules, making it difficult for sound to propagate, and causing noise. can be reduced.
また、膨出空間、小断面流路をスクリュロータと同一ケ
ーシングに設けであるので、装置全体を小形化できると
いう効果を奏する。Furthermore, since the bulging space and the small cross-section flow path are provided in the same casing as the screw rotor, the entire device can be made smaller.
第１図は本発明の第１実施例に係るスクリュ圧縮機の断
面図、第２図は本発明の第２実施例に係るスクリュ圧縮
機の断面図である。
３・・・ケーシング、４・・・吐出ボート、５・・・膨
出空間、６・・・小断面流路。
特 許 出 願 人 株式会社神戸製鋼所代 理 人
弁理士 前出 葆 ほか１名第１図
第２図FIG. 1 is a sectional view of a screw compressor according to a first embodiment of the invention, and FIG. 2 is a sectional view of a screw compressor according to a second embodiment of the invention. 3...Casing, 4...Discharge boat, 5...Bulging space, 6...Small cross-section channel. Patent applicant: Agent of Kobe Steel, Ltd.
Patent attorney Maeda Ao and 1 other person Figure 1 Figure 2
Claims (1)
トから上記膨出空間に流入した吐出ガスをＬ形に方向転
換させて流す小断面流路とをスクリュロータと同一ケー
シングに設けて形成したことを特徴とするスクリュ圧縮
機。(1) A bulging space continuous to the discharge port and a small cross-section flow path through which the discharge gas flowing into the bulging space from the discharge port is changed in direction in an L shape are provided in the same casing as the screw rotor. A screw compressor characterized by the following:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2304993A JP2704039B2 (en) | 1990-11-08 | 1990-11-08 | Screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2304993A JP2704039B2 (en) | 1990-11-08 | 1990-11-08 | Screw compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04175488A true JPH04175488A (en) | 1992-06-23 |
| JP2704039B2 JP2704039B2 (en) | 1998-01-26 |
Family
ID=17939787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2304993A Expired - Lifetime JP2704039B2 (en) | 1990-11-08 | 1990-11-08 | Screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2704039B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6638043B1 (en) * | 2002-06-28 | 2003-10-28 | Carrier Corporation | Diffuser for high-speed screw compressor |
| US6672856B1 (en) * | 2002-06-28 | 2004-01-06 | Carrier Corporation | Diffuser guide vanes for high-speed screw compressor |
| WO2005057014A1 (en) * | 2003-12-15 | 2005-06-23 | Bitzer Kühlmaschinenbau Gmbh | Worm compressor provided with a sound absorber |
| US7080977B2 (en) * | 2003-03-25 | 2006-07-25 | Carrier Corporation | Discharge diffuser for screw compressor |
| WO2010041120A3 (en) * | 2008-10-07 | 2010-12-09 | Eaton Corporation | High efficiency supercharger outlet |
| US8147231B2 (en) * | 2008-07-10 | 2012-04-03 | Kobe Steel, Ltd. | Screw compressor having rotor casing with removable discharge opening neighborhood portion |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2005330512A1 (en) | 2005-04-11 | 2006-10-19 | Carrier Corporation | Compressor muffler |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5846887U (en) * | 1981-09-28 | 1983-03-29 | 株式会社日立製作所 | screw compressor |
| JPS62191689A (en) * | 1986-01-31 | 1987-08-22 | スタル レフリジエレ−シヨン アクチ−ボラグ | Rotary compressor |
| JPS62218682A (en) * | 1986-03-19 | 1987-09-26 | Hitachi Ltd | Screw vacuum pump |
| JPH0240994U (en) * | 1988-09-14 | 1990-03-20 | ||
| JPH02124295U (en) * | 1989-03-24 | 1990-10-12 |
-
1990
- 1990-11-08 JP JP2304993A patent/JP2704039B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5846887U (en) * | 1981-09-28 | 1983-03-29 | 株式会社日立製作所 | screw compressor |
| JPS62191689A (en) * | 1986-01-31 | 1987-08-22 | スタル レフリジエレ−シヨン アクチ−ボラグ | Rotary compressor |
| JPS62218682A (en) * | 1986-03-19 | 1987-09-26 | Hitachi Ltd | Screw vacuum pump |
| JPH0240994U (en) * | 1988-09-14 | 1990-03-20 | ||
| JPH02124295U (en) * | 1989-03-24 | 1990-10-12 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6638043B1 (en) * | 2002-06-28 | 2003-10-28 | Carrier Corporation | Diffuser for high-speed screw compressor |
| US6672856B1 (en) * | 2002-06-28 | 2004-01-06 | Carrier Corporation | Diffuser guide vanes for high-speed screw compressor |
| US7080977B2 (en) * | 2003-03-25 | 2006-07-25 | Carrier Corporation | Discharge diffuser for screw compressor |
| WO2005057014A1 (en) * | 2003-12-15 | 2005-06-23 | Bitzer Kühlmaschinenbau Gmbh | Worm compressor provided with a sound absorber |
| US8147231B2 (en) * | 2008-07-10 | 2012-04-03 | Kobe Steel, Ltd. | Screw compressor having rotor casing with removable discharge opening neighborhood portion |
| WO2010041120A3 (en) * | 2008-10-07 | 2010-12-09 | Eaton Corporation | High efficiency supercharger outlet |
| CN101915241A (en) * | 2008-10-07 | 2010-12-15 | 伊顿公司 | High efficiency supercharger outlet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2704039B2 (en) | 1998-01-26 |
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