JPS6258077A - Screw compressor - Google Patents
Screw compressorInfo
- Publication number
- JPS6258077A JPS6258077A JP19587685A JP19587685A JPS6258077A JP S6258077 A JPS6258077 A JP S6258077A JP 19587685 A JP19587685 A JP 19587685A JP 19587685 A JP19587685 A JP 19587685A JP S6258077 A JPS6258077 A JP S6258077A
- Authority
- JP
- Japan
- Prior art keywords
- slide valve
- rotor
- screw compressor
- groove
- low pressure
- 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
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は容量制御用のスライド弁を備えたスクリュー圧
縮−に係り、特にスライド弁を収納するシリンダの構造
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a screw compression device equipped with a slide valve for capacity control, and particularly to the structure of a cylinder housing the slide valve.
従来、スクリュー圧縮機のスライド弁部の構造に関して
は、実開昭５５−１４０７８号、米国特許第４２８１９
７５号等が知られている。しかし、これらの先行技術は
、スライド弁をロータ側方向に押しつける力を低減する
ことＶＣ関しては何ら考慮されておらず、スライド弁を
支持する案内キーに大きな力が作用して、案内キーがｑ
耗し、さらにスライド弁とロータが接触するという問題
があった。Conventionally, regarding the structure of the slide valve part of a screw compressor, Japanese Utility Model Application No. 55-14078 and U.S. Pat. No. 42819
No. 75 etc. are known. However, these prior art technologies do not consider reducing the force that pushes the slide valve toward the rotor, and a large force acts on the guide key supporting the slide valve, causing the guide key to q
In addition, there was a problem that the slide valve and the rotor came into contact with each other.
本発明の目的は、スクリュー圧縮機の運転中にスライド
弁をロータ側に押しつける荷重を低減することにより、
スライド弁を支持する案内キーの摩耗を防止するととも
に、ロータとスライド弁が接触するのを防止し、安全に
運転できるスクリュー圧縮機を提供することにある。The purpose of the present invention is to reduce the load that presses the slide valve against the rotor side during operation of the screw compressor.
It is an object of the present invention to provide a screw compressor which can be operated safely by preventing wear of a guide key supporting a slide valve and preventing contact between a rotor and a slide valve.
上記目的を達成するため本発明け、スライド弁を収納す
るシリンダの反ロータ側部に圧縮機の低圧側と連通ずる
溝を設けたこと５ｃ特徴とするものである。In order to achieve the above object, the present invention is characterized in that a groove communicating with the low pressure side of the compressor is provided on the side opposite to the rotor of the cylinder housing the slide valve.
以下、本発明の一実施例を第１図乃至第５図を用いて説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.
第１図は容量制御用のスライド弁を備えたスクリュー圧
縮機、第２図は第１図のＡ−Ａ断面図、第３図は第１図
のＢ矢視図である。FIG. 1 is a screw compressor equipped with a slide valve for capacity control, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 3 is a view taken along arrow B in FIG.
雄ロータ１、雌ロータ２けケーシング３に形成された２
つの円筒状穴４内に回転自在に収納され、雄ロータ１の
１端の軸１ａけ電動機５Ｖ′ｃ結合されている。ロータ
の一端は吸入口６に連通する低圧室７に面し、他端は圧
縮ガスを吐出する高圧室８に面している。円筒状穴４の
壁の一部を形成するように配設したスライド弁９け軸方
向に移動可能にンリンダ＋ＯＶｃ収納されている。シリ
ンダ１００反ロータ側位置には連通溝１１ａＶｃよって
低圧室７と連通する溝１１が形成されている。スライド
弁９Ｖｃけロッド１２の一端が連結され、ロッド１２の
他端にはシリンダ１４に摺動可能に嵌合されたピストン
１３が結合されている。スライド弁９の外周部２ケ所に
は、スライド弁９が軸方向にのみ移動可能に案内キー１
５を備えている。2 formed in the casing 3 with 1 male rotor and 2 female rotors
It is rotatably housed in two cylindrical holes 4, and connected to an electric motor 5V'c with a shaft 1a at one end of the male rotor 1. One end of the rotor faces a low pressure chamber 7 that communicates with the suction port 6, and the other end faces a high pressure chamber 8 that discharges compressed gas. A slide valve 9 disposed so as to form a part of the wall of the cylindrical hole 4 is housed in the cylinder +OVc so as to be movable in the axial direction. A groove 11 that communicates with the low pressure chamber 7 through a communication groove 11aVc is formed at a position on the opposite side of the cylinder 100 to the rotor. One end of a rod 12 is connected to the slide valve 9Vc, and a piston 13 slidably fitted into a cylinder 14 is connected to the other end of the rod 12. Guide keys 1 are provided at two locations on the outer circumference of the slide valve 9 to allow the slide valve 9 to move only in the axial direction.
It is equipped with 5.
上記のようｖＣＰ＃成されたスクリュー圧縮機において
、作動ガスは吸入口６から低圧室７に流入し７たのち准
、雌ロータの歯溝間へ流入する。電動機５！Ｆ−よって
駆動される雄ロータ１は、雌ロータ２と噛み合いながら
回転１２、その噛み合いによる歯溝間の容積変化を利用
してガスを圧縮する。圧縮されたガスは高圧室８に吐出
されたのち外部へ流出する。圧縮ガスの使用目的により
、その使用量が減少したときには、シリンダ１４内の圧
力を制御してピストン＋３ｔ−移動させる。第１図にお
いてピストン１３が右方向に移動すると、ロッド１２ｖ
Ｃよって連結されたスライド弁９も右方向に移動する。In the screw compressor configured as vCP# as described above, the working gas flows into the low pressure chamber 7 from the suction port 6, and then flows between the tooth spaces of the female rotor. Electric motor 5! The male rotor 1 driven by the F- rotates 12 while meshing with the female rotor 2, and compresses gas by utilizing the volume change between the tooth spaces due to the meshing. The compressed gas is discharged into the high pressure chamber 8 and then flows out. When the amount of compressed gas used decreases depending on the intended use of the compressed gas, the pressure inside the cylinder 14 is controlled to move the piston +3t-. In FIG. 1, when the piston 13 moves to the right, the rod 12v
The slide valve 9 connected by C also moves to the right.
スライド弁９が右方向に移動すると、准雌ロータ１，２
の歯溝で形成される圧縮室の圧縮開始時期が遅れて圧縮
カス量が減少するものである。スライド弁９を収納する
シリンダ１０の反ロータ側に設けた溝１１は、連通溝１
１３Ｖｃよって低圧室７と連通しているから、圧縮機の
運転中は常に低圧の圧力が作用している。When the slide valve 9 moves to the right, the semi-female rotors 1 and 2
The compression start time of the compression chamber formed by the tooth grooves is delayed, and the amount of compressed debris is reduced. A groove 11 provided on the anti-rotor side of the cylinder 10 that houses the slide valve 9 is connected to the communication groove 1.
Since it communicates with the low pressure chamber 7 through 13Vc, low pressure is always applied during the operation of the compressor.
圧縮機の運転中、スライド弁の軸と直角方向に作用する
力としては、ロータ側から作用する圧縮室の圧力による
力と、背面部ＶＣ作用する圧力による力がある。スライ
ド９Ｆ９の外周部に設けた案内キー１５け、スライド弁
９７″）軸方向への移動を案内すると共に、スライド弁
９Ｖζ作用する上記の力を支承している。During operation of the compressor, the forces acting in the direction perpendicular to the axis of the slide valve include a force due to the pressure in the compression chamber acting from the rotor side and a force due to the pressure acting on the back surface VC. The guide key 15 provided on the outer periphery of the slide 9F9 guides the movement of the slide valve 97'' in the axial direction and supports the above-mentioned force acting on the slide valve 9Vζ.
従来のスライド弁の背面に作用する力の低減について考
慮（２ていない構造では、低圧側の圧力をＰＳ高圧側と
圧力才Ｐｄとすると、スライド弁の背面部の軸方向圧力
分布ｌ／′ｉ第４図に示す如くなる。これに対して本発
明のスライド弁を収納するシリンダに低圧溝を設けた場
合は、第５図に示す如くなり、背面に作用して、スライ
ド弁をロータ側に押］７つける力を大１扁に低ｌ戚でき
る。従って案内キー１５に負荷される力も低減され、そ
の摩耗が防ＩＥできるから、スライド弁がロータ側に押
しつけられて、ロータと接触するのを防止できる。Considering the reduction of the force acting on the back surface of the conventional slide valve (in a structure without 2), if the pressure on the low pressure side is PS and the pressure on the high pressure side is Pd, then the axial pressure distribution on the back surface of the slide valve is l/'i The result will be as shown in Figure 4.On the other hand, if a low pressure groove is provided in the cylinder housing the slide valve of the present invention, the result will be as shown in Figure 5, which acts on the back surface and moves the slide valve toward the rotor. The force applied to the guide key 15 can be reduced to 1. Therefore, the force applied to the guide key 15 is also reduced, and its wear can be prevented, so that the slide valve is pressed against the rotor and does not come into contact with the rotor. can be prevented.
以上説明したように本考案によれば、スライド弁の背面
に作用してスライド弁をロータ側に押しつける力を低減
することができるので、スライド弁を案内する案内キー
の摩耗を防止できると共に、ロータとスライド弁が接触
するのを防止するから、長時間安全に運転できるスクリ
ュー圧縮機が得られる。As explained above, according to the present invention, it is possible to reduce the force that acts on the back surface of the slide valve and presses the slide valve toward the rotor, thereby preventing wear on the guide key that guides the slide valve, and This prevents the slide valve from coming into contact with the screw compressor, resulting in a screw compressor that can be operated safely for long periods of time.
第１図は本発明の一実施例を示すスクリュー圧縮機の部
分縦断面図、第２図は第１図のＡ−Ａ線断面図、第３図
は第１図のＢ矢視図、第４図は従来のスライド弁背面の
圧力分布図、第５図は本発明のスライド弁背面の圧力分
布図である。
１・・・雄ロータ ２・・・雌ロータ ３・・・ケ
ーシング ９・・・スライド弁 １０・・・シリン
ダ１１・・・溝 Ｚａ・・・連通溝。
寥１（！ｌ
尊’ｓｌＸＪFIG. 1 is a partial vertical sectional view of a screw compressor showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. FIG. 4 is a pressure distribution diagram on the back surface of a conventional slide valve, and FIG. 5 is a pressure distribution diagram on the back surface of the slide valve of the present invention. 1... Male rotor 2... Female rotor 3... Casing 9... Slide valve 10... Cylinder 11... Groove Za... Communication groove.寥1(!l Takashi'slXJ
Claims (1)
を収納する一対の相交わる円筒状穴を形成するケーシン
グ、このケーシングに前記円筒状穴と交わるように形成
されたスライド弁用シリンダ、このシリンダに収納され
軸方向に移動可能に配置されたスライド弁を備え、スラ
イド弁が前記円筒状穴の壁の一部を形成するように構成
されたスクリュー圧縮機において、スライド弁を収納す
るシリンダの反ロータ側の一部に溝を設け、該溝を圧縮
機の低圧部と連通したことを特徴とするスクリュー圧縮
機。A pair of male and female rotors that mesh with each other, a casing forming a pair of intersecting cylindrical holes for housing the rotors, a slide valve cylinder formed in the casing to intersect with the cylindrical holes, and housing in the cylinder. In a screw compressor, the screw compressor includes a slide valve arranged to be movable in the axial direction, and the slide valve forms a part of the wall of the cylindrical hole. A screw compressor, characterized in that a groove is provided in a part of the screw compressor, and the groove is communicated with a low pressure section of the compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19587685A JPS6258077A (en) | 1985-09-06 | 1985-09-06 | Screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19587685A JPS6258077A (en) | 1985-09-06 | 1985-09-06 | Screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6258077A true JPS6258077A (en) | 1987-03-13 |
Family
ID=16348454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19587685A Pending JPS6258077A (en) | 1985-09-06 | 1985-09-06 | Screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6258077A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5274597A (en) * | 1990-10-04 | 1993-12-28 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor memory device capable of driving divided word lines at high speed |
| JP2007142245A (en) * | 2005-11-21 | 2007-06-07 | Ricoh Co Ltd | Flow palette, solder flow apparatus and soldering method |
| EP2031249A2 (en) | 2007-08-30 | 2009-03-04 | Hitachi Appliances, Inc. | Capacity control device for screw compressor |
| CN103527485A (en) * | 2012-07-02 | 2014-01-22 | 珠海格力电器股份有限公司 | Slide valve for screw compressor and screw compressor including slide valve |
| CN108150417A (en) * | 2017-12-13 | 2018-06-12 | 西安交通大学 | A kind of compressor slide valve of accessible movement |
-
1985
- 1985-09-06 JP JP19587685A patent/JPS6258077A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5274597A (en) * | 1990-10-04 | 1993-12-28 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor memory device capable of driving divided word lines at high speed |
| JP2007142245A (en) * | 2005-11-21 | 2007-06-07 | Ricoh Co Ltd | Flow palette, solder flow apparatus and soldering method |
| EP2031249A2 (en) | 2007-08-30 | 2009-03-04 | Hitachi Appliances, Inc. | Capacity control device for screw compressor |
| CN103527485A (en) * | 2012-07-02 | 2014-01-22 | 珠海格力电器股份有限公司 | Slide valve for screw compressor and screw compressor including slide valve |
| CN108150417A (en) * | 2017-12-13 | 2018-06-12 | 西安交通大学 | A kind of compressor slide valve of accessible movement |
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