JPH03123995U - - Google Patents
Info
- Publication number
- JPH03123995U JPH03123995U JP3186590U JP3186590U JPH03123995U JP H03123995 U JPH03123995 U JP H03123995U JP 3186590 U JP3186590 U JP 3186590U JP 3186590 U JP3186590 U JP 3186590U JP H03123995 U JPH03123995 U JP H03123995U
- Authority
- JP
- Japan
- Prior art keywords
- housing
- closed space
- shielding plate
- rotors
- discharge port
- 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
- 230000002093 peripheral effect Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
Description
第１図ａはルーツポンプの側面断面図、第１図
ｂは第１図ａのＡ−Ａ線に沿つてみた断面図、第
２図ａは一方のロータに固定された遮蔽板を示す
正面図、第２図ｂは第２図ａに示された遮蔽板の
側面図、第３図は第１閉鎖空間と第２閉鎖空間と
を連通せしめるように形成されたハウジングの別
の実施例を示す側面断面図、第４図は一対のロー
タの回転に伴うルーツポンプの作動状態の推移を
示す側面断面図、第５図はロータ回転角と第１閉
鎖空間および第２閉鎖空間の容積との関係を示す
線図、第６図はロータ回転角と第１閉鎖空間およ
び第２閉鎖空間内の気体圧力との関係を示す線図
、第７図は吐出口および遮蔽板の配置と形状を変
えた本考案の更に別の実施例を示す側面断面図で
ある。
１……ハウジング、２……ロータ、３……ロー
タ、４……吸入口、５……吐出口、１１……遮蔽
板、１２……第１の閉鎖空間、１３……第２の閉
鎖空間、１４……連通路。
Figure 1a is a side sectional view of the Roots pump, Figure 1b is a sectional view taken along line A-A in Figure 1a, and Figure 2a is a front view showing the shielding plate fixed to one rotor. Figure 2b is a side view of the shielding plate shown in Figure 2a, and Figure 3 shows another embodiment of the housing formed to communicate the first closed space and the second closed space. 4 is a side sectional view showing changes in the operating state of the Roots pump as the pair of rotors rotate, and FIG. 5 is a side sectional view showing changes in rotor rotation angle and volumes of the first closed space and the second closed space. Figure 6 is a diagram showing the relationship between the rotor rotation angle and the gas pressure in the first closed space and the second closed space, and Figure 7 is a diagram showing the relationship between the rotor rotation angle and the gas pressure in the first closed space and the second closed space. FIG. 6 is a side sectional view showing still another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Housing, 2... Rotor, 3... Rotor, 4... Suction port, 5... Discharge port, 11... Shielding plate, 12... First closed space, 13... Second closed space , 14... Communication path.
Claims (1)
をハウジング内に配置して、ハウジングの周壁面
に形成された吸入口からハウジング内に吸入した
気体をハウジングに形成された吐出口から吐出す
るようにしたルーツポンプにおいて、前記吐出口
をハウジングの軸方向端面上に形成すると共に、
一方のロータの軸方向端面上に吐出口を開閉制御
する遮蔽板を固定し、吸入口と反対側に位置する
ハウジング周壁および一対のロータにより形成さ
れる第１の閉鎖空間と、遮蔽板を具えたロータお
よびハウジング周壁間に形成される第２の閉鎖空
間とを連通路を介して互いに連通せしめ、前記連
通路によつて互いに連通された第１閉鎖空間と第
２閉鎖空間の容積が減少した後に遮蔽板が吐出口
を開口せしめるようにしたルーツポンプ。 A pair of biplane rotors that rotate while meshing with each other are arranged in the housing so that the gas sucked into the housing from an inlet formed in the peripheral wall of the housing is discharged from an outlet formed in the housing. In the Roots pump, the discharge port is formed on an axial end surface of the housing, and
A shielding plate for controlling opening and closing of the discharge port is fixed on the axial end surface of one of the rotors, and the shielding plate is provided with a first closed space formed by the housing peripheral wall located on the opposite side of the suction port and the pair of rotors. The rotor and the second closed space formed between the housing peripheral wall are communicated with each other via a communication path, and the volumes of the first closed space and the second closed space, which are communicated with each other by the communication path, are reduced. The roots pump was later designed with a shielding plate that opened the discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3186590U JP2534146Y2 (en) | 1990-03-29 | 1990-03-29 | Roots pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3186590U JP2534146Y2 (en) | 1990-03-29 | 1990-03-29 | Roots pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03123995U true JPH03123995U (en) | 1991-12-17 |
| JP2534146Y2 JP2534146Y2 (en) | 1997-04-30 |
Family
ID=31534662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3186590U Expired - Lifetime JP2534146Y2 (en) | 1990-03-29 | 1990-03-29 | Roots pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2534146Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100913239B1 (en) * | 2008-02-29 | 2009-08-24 | 서울메트로 | Separation zig of valve and bush of air compressor cylinder in train |
| KR100913238B1 (en) * | 2008-02-29 | 2009-08-24 | 서울메트로 | Separation zig of valve and bush of air compressor cylinder in train |
| TWI407014B (en) * | 2010-04-02 | 2013-09-01 |
-
1990
- 1990-03-29 JP JP3186590U patent/JP2534146Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100913239B1 (en) * | 2008-02-29 | 2009-08-24 | 서울메트로 | Separation zig of valve and bush of air compressor cylinder in train |
| KR100913238B1 (en) * | 2008-02-29 | 2009-08-24 | 서울메트로 | Separation zig of valve and bush of air compressor cylinder in train |
| TWI407014B (en) * | 2010-04-02 | 2013-09-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2534146Y2 (en) | 1997-04-30 |