JPH0180688U - - Google Patents
Info
- Publication number
- JPH0180688U JPH0180688U JP1987176717U JP17671787U JPH0180688U JP H0180688 U JPH0180688 U JP H0180688U JP 1987176717 U JP1987176717 U JP 1987176717U JP 17671787 U JP17671787 U JP 17671787U JP H0180688 U JPH0180688 U JP H0180688U
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- oil
- screw
- transfer section
- rotor chamber
- 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
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 1
Description
第１図は本考案に係る油入りスクリユ真空ポン
プの断面図、第２図は第１図中のスクリユロータ
の歯溝部の展開図、第３図はロータ軸方向距離と
容積との関係を示す図、第４図はロータ軸方向距
離と圧力との関係を示す図、第５図はロータ回転
速度（または、ロータ周速）と到達真空度との関
係を示す図、第６図、第７図は本考案の他の実施
例を示す断面図、第８図は従来のオイルフリース
クリユ真空ポンプ、および従来の油入りスクリユ
圧縮機の構造をそのまま適用した油入りスクリユ
真空ポンプの断面図、第９図は第８図のスクリユ
ロータの歯溝部の展開図、第１０図はロータ軸方
向距離と容積との関係を示す図、第１１図はロー
タ軸方向距離と圧力との関係を示す図である。
２……吐出口、３……ロータ室、４……スクリ
ユロータ、７……注油口。
Figure 1 is a cross-sectional view of the oil-filled screw vacuum pump according to the present invention, Figure 2 is a developed view of the tooth groove portion of the screw rotor in Figure 1, and Figure 3 is a diagram showing the relationship between rotor axial distance and volume. , Figure 4 is a diagram showing the relationship between rotor axial distance and pressure, Figure 5 is a diagram showing the relationship between rotor rotational speed (or rotor circumferential speed) and ultimate vacuum degree, Figures 6 and 7. 8 is a sectional view showing another embodiment of the present invention, and FIG. 8 is a sectional view of a conventional oil-free screw vacuum pump and an oil-filled screw vacuum pump to which the structure of a conventional oil-filled screw compressor is applied as is. Figure 9 is a developed view of the tooth groove portion of the screw rotor in Figure 8, Figure 10 is a diagram showing the relationship between rotor axial distance and volume, and Figure 11 is a diagram showing the relationship between rotor axial distance and pressure. . 2...Discharge port, 3...Rotor chamber, 4...Screw rotor, 7...Lubrication port.
Claims (1)
、ガス閉込み空間である歯溝部の容積変化がない
移送区間を設けるとともに、移送区間または吐出
口に連通しない圧縮区間のロータ室内に油注入可
能に形成したことを特徴とする油入りスクリユ真
空ポンプ。 The winding angle of the screw rotor is set to 360° or more to provide a transfer section in which the volume of the tooth groove portion, which is a gas-trapping space, does not change, and the rotor chamber in the transfer section or the compression section that does not communicate with the discharge port is formed so that oil can be injected into the rotor chamber. An oil-filled screw vacuum pump featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176717U JPH0716064Y2 (en) | 1987-11-19 | 1987-11-19 | Oil-filled screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176717U JPH0716064Y2 (en) | 1987-11-19 | 1987-11-19 | Oil-filled screw vacuum pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0180688U true JPH0180688U (en) | 1989-05-30 |
| JPH0716064Y2 JPH0716064Y2 (en) | 1995-04-12 |
Family
ID=31468427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987176717U Expired - Lifetime JPH0716064Y2 (en) | 1987-11-19 | 1987-11-19 | Oil-filled screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716064Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999049219A1 (en) * | 1998-03-24 | 1999-09-30 | Taiko Kikai Industries Co., Ltd. | Screw rotor type wet vacuum pump |
| JP2015155652A (en) * | 2014-02-20 | 2015-08-27 | 日立アプライアンス株式会社 | Screw fluid machine and refrigeration cycle apparatus |
-
1987
- 1987-11-19 JP JP1987176717U patent/JPH0716064Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999049219A1 (en) * | 1998-03-24 | 1999-09-30 | Taiko Kikai Industries Co., Ltd. | Screw rotor type wet vacuum pump |
| DE19882900B4 (en) * | 1998-03-24 | 2004-04-15 | Taiko Kikai Industries Co., Ltd. | Screw rotor wet vacuum pump |
| JP2015155652A (en) * | 2014-02-20 | 2015-08-27 | 日立アプライアンス株式会社 | Screw fluid machine and refrigeration cycle apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0716064Y2 (en) | 1995-04-12 |
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