JPH02144686U - - Google Patents
Info
- Publication number
- JPH02144686U JPH02144686U JP5356589U JP5356589U JPH02144686U JP H02144686 U JPH02144686 U JP H02144686U JP 5356589 U JP5356589 U JP 5356589U JP 5356589 U JP5356589 U JP 5356589U JP H02144686 U JPH02144686 U JP H02144686U
- Authority
- JP
- Japan
- Prior art keywords
- ports
- flow path
- valve
- check valve
- 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.)
- Granted
Links
- 238000000926 separation method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Description
第１図は本考案に係るスクリユ圧縮機の全体構
成図、第２図は第１図中のコントローラにおける
制御フローを示す図、第３図は従来のスクリユ圧
縮機の全体構成図、第４図は第３図に示す装置に
おける圧力変化の一例を示す図である。
１…吸気調節弁、２…スクリユ圧縮機本体、３
…１次クーラ、４…逆止弁、５…２次クーラ、６
…ドレン分離排出手段、８…第１流路、９…第２
流路、１１…圧力スイツチ、１２…分岐流路、１
３…開閉弁、１４…コントローラ。
Figure 1 is an overall configuration diagram of the screw compressor according to the present invention, Figure 2 is a diagram showing the control flow in the controller in Figure 1, Figure 3 is an overall configuration diagram of a conventional screw compressor, and Figure 4 4 is a diagram showing an example of pressure change in the apparatus shown in FIG. 3. FIG. 1...Intake control valve, 2...Screw compressor main body, 3
...Primary cooler, 4...Check valve, 5...Secondary cooler, 6
...Drain separation/discharge means, 8...First flow path, 9...Second
Channel, 11... Pressure switch, 12... Branch channel, 1
3...Opening/closing valve, 14...Controller.
Claims (1)
ユロータを用いたスクリユ圧縮機本体から順番に
１次クーラ、逆止弁、２次クーラ、ドレン分離排
出手段を経由する第１流路と、この流路の１次ク
ーラと逆止弁との間の部分から分岐して、上記ａ
，ｂポートとは連通しない上記吸気調節弁のｃ，
ｄポートに至る第２流路とを有するとともに、上
記逆止弁の下流側に、この下流側部分の圧力を検
出可能に圧力スイツチを設けて、この圧力スイツ
チにより、この部分の圧力が設定値以下の場合に
はａ，ｂポートを開、ｃ，ｄポートを閉とする一
方、設定値を超えた場合にはａ，ｂポートを閉あ
るいは絞り、ｃ，ｄポートを開とするように形成
したスクリユ圧縮機において、上記第１流路の逆
止弁と２次クーラとの間の部分から分岐させた分
岐流路に、開閉弁を設けるとともに、上記圧力が
上記設定値を超えた場合には、一定時間だけ上記
開閉弁を開とするコントローラを設けたことを特
徴とするオイルフリー式スクリユ圧縮機。 After passing through the a and b ports of the intake control valve, the first flow path starts from the main body of the screw compressor using the screw rotor and passes through the primary cooler, check valve, secondary cooler, and drain separation/discharge means in order; Branching from the part of the flow path between the primary cooler and the check valve,
, c of the above intake control valve that does not communicate with port b,
A pressure switch is provided on the downstream side of the check valve to be able to detect the pressure in this downstream part, and the pressure switch adjusts the pressure in this part to the set value. In the following cases, ports a and b are opened and ports c and d are closed, while if the set value is exceeded, ports a and b are closed or throttled and ports c and d are opened. In the screw compressor, an on-off valve is provided in a branch flow path branched from a portion between the check valve of the first flow path and the secondary cooler, and when the pressure exceeds the set value, The oil-free screw compressor is characterized in that it is provided with a controller that opens the on-off valve for a certain period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5356589U JPH0749029Y2 (en) | 1989-05-10 | 1989-05-10 | Oil-free screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5356589U JPH0749029Y2 (en) | 1989-05-10 | 1989-05-10 | Oil-free screw compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02144686U true JPH02144686U (en) | 1990-12-07 |
| JPH0749029Y2 JPH0749029Y2 (en) | 1995-11-13 |
Family
ID=31574861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5356589U Expired - Lifetime JPH0749029Y2 (en) | 1989-05-10 | 1989-05-10 | Oil-free screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0749029Y2 (en) |
-
1989
- 1989-05-10 JP JP5356589U patent/JPH0749029Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0749029Y2 (en) | 1995-11-13 |
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