JPS6351195U - - Google Patents

Info

Publication number
JPS6351195U
JPS6351195U JP1986144628U JP14462886U JPS6351195U JP S6351195 U JPS6351195 U JP S6351195U JP 1986144628 U JP1986144628 U JP 1986144628U JP 14462886 U JP14462886 U JP 14462886U JP S6351195 U JPS6351195 U JP S6351195U
Authority
JP
Japan
Prior art keywords
thread groove
molecular pump
suction side
rotor
spiral
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
Application number
JP1986144628U
Other languages
English (en)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1986144628U priority Critical patent/JPS6351195U/ja
Publication of JPS6351195U publication Critical patent/JPS6351195U/ja
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00Axial-flow pumps
    • F04D19/02Multi-stage pumps
    • F04D19/04Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
    • F04D19/044Holweck-type pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/52Casings; Connections of working fluid for axial pumps
    • F04D29/522Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Positive Displacement Air Blowers (AREA)

Description

【図面の簡単な説明】
第1図は第2図に示した横断面が方形状の螺旋
歯を外周に切つた円筒形ロータを示す図であり、
A図はその正面図、B図は左側面図、及びC図は
左側端部の正面展開図である。第2図は本考案の
一実施例によるねじ溝分子ポンプの正面側ケース
を除いた正面図である。第3図は従来の円筒形ロ
ータを示す第1図と対応する図である。 30……ロータ、32,34……前、後段部、
36……中空部、38……螺旋歯、40……切欠
き面、42……端面、44……歯溝、46……円
筒形ケース、40……吸気管、50……排気管、
ε……ねじれ角、ε……切欠き面の角度。

Claims (1)

    【実用新案登録請求の範囲】
  1. 横断面が方形状の螺旋歯を設けたロータ又は円
    筒形ケースを備えたねじ溝分子ポンプにおいて、
    上記螺旋歯の吸気側端部に切欠き面を設け、その
    吸気側に向く端面を線状にすることを特徴とする
    ねじ溝分子ポンプ。
JP1986144628U 1986-09-20 1986-09-20 Pending JPS6351195U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986144628U JPS6351195U (ja) 1986-09-20 1986-09-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986144628U JPS6351195U (ja) 1986-09-20 1986-09-20

Publications (1)

Publication Number Publication Date
JPS6351195U true JPS6351195U (ja) 1988-04-06

Family

ID=31055407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986144628U Pending JPS6351195U (ja) 1986-09-20 1986-09-20

Country Status (1)

Country Link
JP (1) JPS6351195U (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0462392U (ja) * 1990-10-05 1992-05-28
JP2001248587A (ja) * 1999-12-28 2001-09-14 Kashiyama Kogyo Kk 複合型真空ポンプ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49128306A (ja) * 1973-03-21 1974-12-09
JPS5385503A (en) * 1977-01-05 1978-07-28 Inst Francais Du Petrole Device for sucking and discharging liquid
JPS57191492A (en) * 1981-05-22 1982-11-25 Hitachi Ltd Molecular turbo-pump
JPS58155297A (ja) * 1981-12-14 1983-09-14 ユルトラ・ツエントリフユ−ゲ・ネ−デルランド・ナ−ムロ−ゼ・ヴエノ−トチヤツプ 高真空分子ポンプ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49128306A (ja) * 1973-03-21 1974-12-09
JPS5385503A (en) * 1977-01-05 1978-07-28 Inst Francais Du Petrole Device for sucking and discharging liquid
JPS57191492A (en) * 1981-05-22 1982-11-25 Hitachi Ltd Molecular turbo-pump
JPS58155297A (ja) * 1981-12-14 1983-09-14 ユルトラ・ツエントリフユ−ゲ・ネ−デルランド・ナ−ムロ−ゼ・ヴエノ−トチヤツプ 高真空分子ポンプ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0462392U (ja) * 1990-10-05 1992-05-28
JP2001248587A (ja) * 1999-12-28 2001-09-14 Kashiyama Kogyo Kk 複合型真空ポンプ

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