WO2013156789A3 - Screw machine with variable diameter rotors - Google Patents

Screw machine with variable diameter rotors Download PDF

Info

Publication number
WO2013156789A3
WO2013156789A3 PCT/GB2013/050996 GB2013050996W WO2013156789A3 WO 2013156789 A3 WO2013156789 A3 WO 2013156789A3 GB 2013050996 W GB2013050996 W GB 2013050996W WO 2013156789 A3 WO2013156789 A3 WO 2013156789A3
Authority
WO
WIPO (PCT)
Prior art keywords
pressure port
screw machine
variable diameter
low
high pressure
Prior art date
Application number
PCT/GB2013/050996
Other languages
French (fr)
Other versions
WO2013156789A2 (en
Inventor
Ahmed Kovacevic
Original Assignee
The City University
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 The City University filed Critical The City University
Publication of WO2013156789A2 publication Critical patent/WO2013156789A2/en
Publication of WO2013156789A3 publication Critical patent/WO2013156789A3/en

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)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

A positive displacement screw machine is described, which has a casing with a low-pressure port and a high-pressure port that are axially spaced apart. The casing defines a first bore and a second bore that extend along respective first and second axes from the low pressure port to the high pressure port. First and second meshing helical lobed rotors are arranged to contra-rotate within the respective first and second bores. 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.
PCT/GB2013/050996 2012-04-19 2013-04-19 Screw machine with variable diameter rotors WO2013156789A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB201206905A GB2501305A (en) 2012-04-19 2012-04-19 Screw machine with tapered diameter rotors
GB1206905.0 2012-04-19

Publications (2)

Publication Number Publication Date
WO2013156789A2 WO2013156789A2 (en) 2013-10-24
WO2013156789A3 true WO2013156789A3 (en) 2014-04-10

Family

ID=46261580

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2013/050996 WO2013156789A2 (en) 2012-04-19 2013-04-19 Screw machine with variable 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
KR102621304B1 (en) 2015-10-30 2024-01-04 가드너 덴버, 인크 Complex screw rotors
JP2021060003A (en) * 2019-10-07 2021-04-15 株式会社日立産機システム Screw compressor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6312242B1 (en) * 2000-05-12 2001-11-06 Industrial Technology Research Institute Asymmetric double screw rotor assembly

Family Cites Families (1)

* 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.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6312242B1 (en) * 2000-05-12 2001-11-06 Industrial Technology Research Institute Asymmetric double screw rotor assembly

Also Published As

Publication number Publication date
WO2013156789A2 (en) 2013-10-24
GB2501305A (en) 2013-10-23
GB201206905D0 (en) 2012-06-06

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