CA2504474A1 - Improved screw rotor device - Google Patents

Improved screw rotor device Download PDF

Info

Publication number
CA2504474A1
CA2504474A1 CA002504474A CA2504474A CA2504474A1 CA 2504474 A1 CA2504474 A1 CA 2504474A1 CA 002504474 A CA002504474 A CA 002504474A CA 2504474 A CA2504474 A CA 2504474A CA 2504474 A1 CA2504474 A1 CA 2504474A1
Authority
CA
Canada
Prior art keywords
rotors
pair
rotor
screw rotor
threads
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
Application number
CA002504474A
Other languages
French (fr)
Other versions
CA2504474C (en
Inventor
Charles K. Heizer
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.)
IMPERIAL RESEARCH LLC
Original Assignee
Individual
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
Priority claimed from US10/283,422 external-priority patent/US6719548B1/en
Priority claimed from US10/283,421 external-priority patent/US6719547B2/en
Application filed by Individual filed Critical Individual
Publication of CA2504474A1 publication Critical patent/CA2504474A1/en
Application granted granted Critical
Publication of CA2504474C publication Critical patent/CA2504474C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F01C1/14—Rotary-piston machines or engines 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
    • F01C1/16—Rotary-piston machines or engines 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/082—Details specially related to intermeshing engagement type machines or engines
    • F01C1/084—Toothed wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

A screw rotor device has a pair of intermeshing rotors (14, 16) that are rotatably mounted in a housing around a pair of axes (26, 28). The cross-sectional shape of the rotors can be identical, i.e., twin rotors, or the rotors may have different cross-sectional shapes, i.e., a male and female.
Generally, the screw rotor has an identical number of threads and the twisting of the cross-sectional shape along the respective rotor axes results in a helical shape for each rotor that intermeshes with the other rotor (14, 16).
Accordingly, the rotors (14, 16) can be referred to as having intermeshing helical element pairs (34, 36). In several aspects of the invention, the helical element pairs can be, in the alternative or in any combination, a phase-offset thread and a corresponding phase-offset groove, a pair of single-pitch buttress threads (50), or a pair of single-pitch concave/convex threads.
CA002504474A 2002-10-29 2003-10-28 Improved screw rotor device Expired - Fee Related CA2504474C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US10/283,422 US6719548B1 (en) 2002-10-29 2002-10-29 Twin screw rotor device
US10/283,421 US6719547B2 (en) 2001-10-19 2002-10-29 Offset thread screw rotor device
US10/283,422 2002-10-29
US10/283,421 2002-10-29
PCT/US2003/034158 WO2004040133A2 (en) 2002-10-29 2003-10-28 Improved screw rotor device

Publications (2)

Publication Number Publication Date
CA2504474A1 true CA2504474A1 (en) 2004-05-13
CA2504474C CA2504474C (en) 2008-09-09

Family

ID=32233091

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002504474A Expired - Fee Related CA2504474C (en) 2002-10-29 2003-10-28 Improved screw rotor device

Country Status (5)

Country Link
EP (1) EP1556610A2 (en)
AU (1) AU2003285043A1 (en)
CA (1) CA2504474C (en)
MX (1) MXPA05004582A (en)
WO (1) WO2004040133A2 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931308A (en) * 1957-03-29 1960-04-05 Improved Machinery Inc Plural intermeshing screw structures
NL285314A (en) * 1961-11-22 1900-01-01
US3138110A (en) * 1962-06-05 1964-06-23 Joseph E Whitfield Helically threaded intermeshing rotors
US3282495A (en) * 1964-04-29 1966-11-01 Dresser Ind Sealing arrangement for screw-type compressors and similar devices
US3841805A (en) * 1973-04-04 1974-10-15 Houdaille Industries Inc Screw liner
JP2620785B2 (en) * 1987-06-03 1997-06-18 住友重機械工業株式会社 Screw rotor tooth profile design method
JPH01208587A (en) * 1988-02-15 1989-08-22 Hitachi Ltd Screw rotor

Also Published As

Publication number Publication date
EP1556610A2 (en) 2005-07-27
WO2004040133A2 (en) 2004-05-13
WO2004040133A3 (en) 2004-07-01
MXPA05004582A (en) 2005-07-26
CA2504474C (en) 2008-09-09
AU2003285043A1 (en) 2004-05-25

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20091028