DE3277846D1 - Method for producing a pair of screw rotors of a screw compressor - Google Patents

Method for producing a pair of screw rotors of a screw compressor

Info

Publication number
DE3277846D1
DE3277846D1 DE8282108865T DE3277846T DE3277846D1 DE 3277846 D1 DE3277846 D1 DE 3277846D1 DE 8282108865 T DE8282108865 T DE 8282108865T DE 3277846 T DE3277846 T DE 3277846T DE 3277846 D1 DE3277846 D1 DE 3277846D1
Authority
DE
Germany
Prior art keywords
tooth form
rotors
screw
tooth
producing
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.)
Expired
Application number
DE8282108865T
Other languages
German (de)
Inventor
Katsuhiko Kasuya
Hidetomo Mori
Mitsuru Fujiwara
Tetsuzo Matsunaga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 by Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3277846D1 publication Critical patent/DE3277846D1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/084—Toothed wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Abstract

The screw compressor includes female (1) and male (2) rotors in meshing engagement, one having a tooth form (8) which in normal temp. conditions is used as a basic tooth form. When this tooth form is thermally deformed, it is used to generate another rotor tooth form (10). The thermally deformed tooth (9) is expanded by heat generated during operation of the rotors, while the further tooth form (10) is a normal temp. version of the deformed tooth form. When determining desired tooth forms, backlash should be taken into consideration.
DE8282108865T 1982-09-24 1982-09-24 Method for producing a pair of screw rotors of a screw compressor Expired DE3277846D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82108865A EP0104265B1 (en) 1982-09-24 1982-09-24 Method for producing a pair of screw rotors of a screw compressor

Publications (1)

Publication Number Publication Date
DE3277846D1 true DE3277846D1 (en) 1988-01-28

Family

ID=8189243

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282108865T Expired DE3277846D1 (en) 1982-09-24 1982-09-24 Method for producing a pair of screw rotors of a screw compressor

Country Status (2)

Country Link
EP (1) EP0104265B1 (en)
DE (1) DE3277846D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106912B1 (en) * 1982-10-25 1988-01-27 Hitachi, Ltd. Screw rotor machine
JP2619468B2 (en) * 1988-04-06 1997-06-11 株式会社日立製作所 Oil-free screw fluid machine
JP3240851B2 (en) * 1994-09-09 2001-12-25 株式会社日立製作所 Dry screw fluid machine
DE19941787B4 (en) * 1999-09-02 2011-06-16 Leybold Vakuum Gmbh Screw vacuum pump with screw flights with changing pitch
DE102013110091B3 (en) * 2013-09-13 2015-02-12 Pfeiffer Vacuum Gmbh Roots pump with two rotors
GB2608630A (en) * 2021-07-08 2023-01-11 Leybold Gmbh Screw pump, screw rotor, method of manufacturing a screw rotor, and use of a screw pump or a screw rotor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB968195A (en) * 1960-08-30 1964-08-26 Howden James & Co Ltd Improvements in or relating to rotary engines and compressors
BE792576A (en) * 1972-05-24 1973-03-30 Gardner Denver Co SCREW COMPRESSOR HELICOIDAL ROTOR
DE2361068A1 (en) * 1973-12-07 1975-06-19 Demag Ag ROTARY LISTON COMPRESSORS, IN PARTICULAR DRY OR FLOODED SCREW COMPRESSORS
US4140445A (en) * 1974-03-06 1979-02-20 Svenka Rotor Haskiner Aktiebolag Screw-rotor machine with straight flank sections

Also Published As

Publication number Publication date
EP0104265A1 (en) 1984-04-04
EP0104265B1 (en) 1987-12-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition