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1. (CN1166869) Multi-rotor helical-screw compressor

Office : China
Application Number: 96191315.0 Application Date: 30.10.1996
Publication Number: 1166869 Publication Date: 03.12.1997
Publication Kind : A
Prior PCT appl.: Application Number:PCTUS9617451 ; Publication Number:9716645 Click to see the data
IPC:
F04C 18/16
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
CPC:
F04C 18/084
F04C 18/165
Applicants: David N. Shaw
大卫·N·肖
Inventors: David N. Shaw
大卫·N·肖
Agents: ZHANG LANYING
上海专利商标事务所
Priority Data: 08550253 30.10.1995 US
Title: (EN) Multi-rotor helical-screw compressor
(ZH) 多转子螺旋压缩机
Abstract: front page image
(EN) A compressor includes a male rotor which is axially aligned with and in communication with two female rotors. The male rotor is driven by a motor, in other words the male rotor is the drive rotor. The male rotor comprises an inner cylindrical metal shaft with an outer composite material ring mounted thereon. The male rotor comprises an inner cylindrical metal shaft with an outer composite material ring 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.
(ZH)

一压缩机包括一与两个凹形转子轴向对齐和相配合的凸形转子。凸形转子是由电动机驱动的主动转子,它包括其上安装复合材料外环的圆柱形内金属轴。环包括若干一体地从其伸出的与各凹形转子上的多个齿槽啮合的凸形转子凸齿。这凸齿使得凹形转子与凸形转子之间的定位有一小间隙。该间隙小到足以使液体制冷剂自己提供足够的密封、冷却和润滑。凹形转子定位在凸形转子的相对两侧可平衡凸形转子上的径向负载,因此使径向支承负载达到最小。


Also published as:
EP0805923US5807091AU1996076006WO/1997/016645