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1. (AU1996076006) Multi-rotor helical-screw compressor

Office : Australia
Application Number: 76006/96 Application Date: 30.10.1996
Publication Number: 1996076006 Publication Date: 17.07.1997
Publication Kind : A
Prior PCT appl.: Application Number:US1996017451 ; Publication Number: Click to see the data
IPC:
F04C 18/16
F04C 18/08
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
C
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
18
Rotary-piston pumps specially adapted for elastic fluids
08
of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12
of other than internal-axis type
14
with toothed rotary pistons
16
with helical teeth, e.g. chevron-shaped, screw type
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
C
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
18
Rotary-piston pumps specially adapted for elastic fluids
08
of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
CPC:
F04C 18/084
F04C 18/165
Applicants: Shaw, David N.
Inventors: Shaw, David N.
Priority Data: 550253 30.10.1995 US
Title: (EN) Multi-rotor helical-screw compressor
Abstract:
(EN) A compressor (90) includes a male rotor (42) which is axially aligned with and in communication with two female rotors (44, 46). The male rotor is driven by a motor (92), in other words the male rotor is the drive rotor. The male rotor has a plurality of lobes (48-55) which intermesh with a plurality of flutes (56-67) on each of the female rotors. The male rotor comprises an inner cylindrical metal shaft (82) with an outer composite material ring (84) mounted thereon. The ring includes the lobes of the male rotor integrally depending therefrom. The lobes of the male rotor being comprised of a composite material allows positioning of the female rotors at a small clearance from the male drive rotor. This clearance is small enough that the liquid refrigerant itself provides sufficient sealing, cooling and lubrication. The positioning of the female rotors on opposing sides of the male rotor balances the radial loading on the male rotor thereby minimizing radial bearing loads.
Also published as:
EP0805923US5807091CN1166869WO/1997/016645