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GB201206905D0 - Screw machine with variable diameter rotors - Google Patents

Screw machine with variable diameter rotors

Info

Publication number
GB201206905D0
GB201206905D0 GBGB1206905.0A GB201206905A GB201206905D0 GB 201206905 D0 GB201206905 D0 GB 201206905D0 GB 201206905 A GB201206905 A GB 201206905A GB 201206905 D0 GB201206905 D0 GB 201206905D0
Authority
GB
United Kingdom
Prior art keywords
pressure port
rotor
screw machine
variable diameter
low
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.)
Withdrawn
Application number
GBGB1206905.0A
Other versions
GB2501305A (en
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.)
City St Georges University of London
Original Assignee
City University of London
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 City University of London filed Critical City University of London
Priority to GB1206905.0A priority Critical patent/GB2501305A/en
Publication of GB201206905D0 publication Critical patent/GB201206905D0/en
Priority to PCT/GB2013/050996 priority patent/WO2013156789A2/en
Publication of GB2501305A publication Critical patent/GB2501305A/en
Withdrawn legal-status Critical Current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
    • F01C1/082—Details specially related to intermeshing engagement type machines or engines
    • F01C1/084—Toothed wheels
    • 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
    • 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
    • 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
    • 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
    • F04C2250/00—Geometry
    • F04C2250/20—Geometry of the rotor
    • F04C2250/201—Geometry of the rotor conical shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

A positive displacement screw machine 100 comprising a casing 106 with a low-pressure port 116 and a high-pressure port 122 axially spaced apart, where the casing defines a first bore 126 and a second bore 128 that extend along respective first and second axes from the low pressure port to the high pressure port. There are first 102 and second 104 meshing helical lobed rotors arranged to contra-rotate within the respective first and second bores, where the first rotor has an outside diameter that tapers in a direction substantially parallel to the first axis moving from the low pressure port to the high pressure port, and the second rotor has a root diameter that tapers in a direction substantially parallel to the second axis moving from the high pressure port to the low pressure port. The root diameter of the first rotor and the outside diameter of the second rotor may be constant.
GB1206905.0A 2012-04-19 2012-04-19 Screw machine with tapered diameter rotors Withdrawn GB2501305A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1206905.0A GB2501305A (en) 2012-04-19 2012-04-19 Screw machine with tapered diameter rotors
PCT/GB2013/050996 WO2013156789A2 (en) 2012-04-19 2013-04-19 Screw machine with variable diameter rotors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1206905.0A GB2501305A (en) 2012-04-19 2012-04-19 Screw machine with tapered diameter rotors

Publications (2)

Publication Number Publication Date
GB201206905D0 true GB201206905D0 (en) 2012-06-06
GB2501305A GB2501305A (en) 2013-10-23

Family

ID=46261580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1206905.0A Withdrawn GB2501305A (en) 2012-04-19 2012-04-19 Screw machine with tapered diameter rotors

Country Status (2)

Country Link
GB (1) GB2501305A (en)
WO (1) WO2013156789A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3368771B1 (en) 2015-10-30 2021-03-31 Gardner Denver Inc. Complex screw rotors
JP7657540B2 (en) * 2019-10-07 2025-04-07 株式会社日立産機システム Screw Compressor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2684417B1 (en) * 1991-11-28 1994-01-07 Alcatel Cit SCREW TYPE VACUUM PUMP.
TW515480U (en) * 2000-05-12 2002-12-21 Ind Tech Res Inst Non-symmetrical dual spiral rotors apparatus

Also Published As

Publication number Publication date
WO2013156789A2 (en) 2013-10-24
WO2013156789A3 (en) 2014-04-10
GB2501305A (en) 2013-10-23

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)