JP6446476B2 - スクリュー真空ポンプ - Google Patents
スクリュー真空ポンプ Download PDFInfo
- Publication number
- JP6446476B2 JP6446476B2 JP2016568175A JP2016568175A JP6446476B2 JP 6446476 B2 JP6446476 B2 JP 6446476B2 JP 2016568175 A JP2016568175 A JP 2016568175A JP 2016568175 A JP2016568175 A JP 2016568175A JP 6446476 B2 JP6446476 B2 JP 6446476B2
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- Prior art keywords
- curve
- screw
- arc
- rotation
- screw rotor
- 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.)
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- 239000011295 pitch Substances 0.000 claims description 16
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
Claims (2)
- ねじれ方向が逆方向で等ピッチの螺旋歯を夫々有する一対のスクリューロータを備え、これら一対のスクリューロータを非接触で互いに噛み合わせた状態でケーシングに格納し、両スクリューロータの同期回転によりケーシングの一端より吸気して他端より吐出するスクリュー真空ポンプであって、
螺旋歯の軸直角断面形状が、その歯底部を構成する、スクリューロータの回転中心を中心とする第1円弧と、その歯先部を構成する、スクリューロータの回転中心を中心とする第2円弧と、第1円弧と第2円弧とを夫々結ぶ第1曲線と第2曲線とで創成されるものにおいて、
スクリューロータの軸直角断面にて互いに直交する径方向の二軸方向をX軸方向及びY軸方向とし、
第1曲線は、両螺旋歯の歯面間の隙間をゼロとした場合の対をなす他方のスクリューロータの第2円弧上の点で創成される、このスクリューロータの回転中心から径方向の任意の距離における螺旋歯のピッチ角が異なるエピトロコイド曲線を基に、このエピトロコイド曲線の径方向における座標(Xt=2Acosθ−rdcos(2θ),Yt=2Asinθ−rdsin(2θ)、Aは両スクリューロータの回転中心間の距離の半分、rdは第2円弧の半径、θは回転角)を、当該座標と次式(数1)で算出される補正角(α)とに基づいて補正し、補正後の各座標(X=Xtcosα−Ytsinα,Y=Xtsinα+Ytcosα)を結んで描くものとしたことを特徴とするスクリュー真空ポンプ。
- 前記第2曲線は、外サイクロイド曲線とインボリュート曲線とを組み合わせて形成されることを特徴とする請求項1記載のスクリュー真空ポンプ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015000417 | 2015-01-05 | ||
JP2015000417 | 2015-01-05 | ||
PCT/JP2015/006242 WO2016110902A1 (ja) | 2015-01-05 | 2015-12-15 | スクリュー真空ポンプ |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2016110902A1 JPWO2016110902A1 (ja) | 2017-08-10 |
JP6446476B2 true JP6446476B2 (ja) | 2018-12-26 |
Family
ID=56355632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2016568175A Active JP6446476B2 (ja) | 2015-01-05 | 2015-12-15 | スクリュー真空ポンプ |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP6446476B2 (ja) |
KR (1) | KR101883894B1 (ja) |
CN (1) | CN107110156B (ja) |
TW (1) | TWI670418B (ja) |
WO (1) | WO2016110902A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107829931B (zh) * | 2017-11-02 | 2019-02-05 | 西安交通大学 | 一种双螺杆真空泵转子型线 |
CN107989792B (zh) * | 2018-01-22 | 2023-09-12 | 中国石油大学(华东) | 一种全光滑的螺杆转子 |
CN108050069B (zh) * | 2018-01-22 | 2023-07-25 | 中国石油大学(华东) | 一种低泄漏的全光滑的螺杆转子 |
CN110966265B (zh) * | 2018-09-28 | 2022-03-22 | 党祎贤 | 集射真空泵 |
CN111502999B (zh) * | 2020-05-11 | 2022-02-08 | 台州学院 | 一种干式螺杆真空泵及其螺杆转子 |
CN113779721B (zh) * | 2021-09-08 | 2023-11-14 | 浙江理工大学 | 一种基于包络面修正的特殊爪型真空泵型线设计方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5491267A (en) * | 1977-12-28 | 1979-07-19 | Oval Eng Co Ltd | Displacementttype flow meter with helical gear |
JP3979489B2 (ja) * | 2002-03-04 | 2007-09-19 | ナブテスコ株式会社 | スクリューロータ及びスクリュー機械 |
WO2005113984A1 (ja) | 2004-05-24 | 2005-12-01 | Nabtesco Corporation | スクリューロータ及びスクリュー式流体機械 |
JP4684671B2 (ja) * | 2005-02-04 | 2011-05-18 | 株式会社日立産機システム | スクリューロータ |
JP4570497B2 (ja) * | 2005-03-25 | 2010-10-27 | 北越工業株式会社 | スクリュロータ及びスクリュロータの歯形補正方法 |
CN201080914Y (zh) * | 2007-07-09 | 2008-07-02 | 刘彤贤 | 双螺杆真空流体泵 |
DE102008063281A1 (de) * | 2008-12-29 | 2010-07-01 | Oerlikon Leybold Vacuum Gmbh | Vakuumpumpe |
JP2012207660A (ja) * | 2011-03-11 | 2012-10-25 | Toyota Industries Corp | スクリュポンプ |
CN202926637U (zh) * | 2012-10-09 | 2013-05-08 | 台州职业技术学院 | 一种干式螺杆真空泵转子型线 |
TW201443341A (zh) * | 2013-05-07 | 2014-11-16 | Univ Nat Pingtung Sci & Tech | 雙螺桿壓縮機 |
-
2015
- 2015-12-15 JP JP2016568175A patent/JP6446476B2/ja active Active
- 2015-12-15 WO PCT/JP2015/006242 patent/WO2016110902A1/ja active Application Filing
- 2015-12-15 KR KR1020177021546A patent/KR101883894B1/ko active IP Right Grant
- 2015-12-15 CN CN201580072378.5A patent/CN107110156B/zh active Active
- 2015-12-22 TW TW104143172A patent/TWI670418B/zh active
Also Published As
Publication number | Publication date |
---|---|
TW201634812A (zh) | 2016-10-01 |
TWI670418B (zh) | 2019-09-01 |
CN107110156A (zh) | 2017-08-29 |
KR20170102324A (ko) | 2017-09-08 |
KR101883894B1 (ko) | 2018-08-01 |
JPWO2016110902A1 (ja) | 2017-08-10 |
WO2016110902A1 (ja) | 2016-07-14 |
CN107110156B (zh) | 2018-08-24 |
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