Compressor system

Patent metadata

Field	Value
Publication number	US-11519416-B2
Application number	US-202217651296-A
Country	US
Kind code	B2
Filing date	Feb 16, 2022
Priority date	Mar 26, 2021
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A compressor system includes a driving unit having a drive shaft, a plurality of compressors which compress a gas, and a transmission mechanism which increases a speed of a rotation of the drive shaft and transmits the rotation to the plurality of compressors. The transmission mechanism includes a main shaft which rotates together with the drive shaft and a plurality of gear mechanisms which transmit a rotation of the main shaft to the corresponding one compressor. The gear mechanism includes an auxiliary shaft which rotates together with an auxiliary gear meshing with the main gear, a plurality of first gears which rotate together with the auxiliary shaft, an output shaft to which an output gear meshing with the first gear is fixed and which is connected to the compressor, and a first bearing which rotatably supports the auxiliary shaft, and a second bearing which rotatably supports the output shaft.

First claim

What is claimed is:

1. A compressor system comprising:
a driving unit configured to rotationally drive and including a drive shaft which configured to rotate about an axis;
a plurality of compressors configured to compress a gas; and
a transmission mechanism configured to increase a speed of a rotation of the drive shaft and transmit the rotation of the drive shaft to the plurality of compressors,
wherein the transmission mechanism includes
a main shaft which configured to rotate together with the drive shaft,
a main gear fixed to the main shaft, and
a plurality of gear mechanisms disposed to surround the main shaft, wherein each of the plurality of gear mechanisms is configured to transmit a rotation of the main shaft to a corresponding one compressor, and
each of the plurality of the gear mechanisms includes
an auxiliary gear meshing with the main gear,
an auxiliary shaft to which the auxiliary gear is fixed and which configured to rotate together with the auxiliary gear,
a plurality of first gears disposed apart from each other in a circumferential direction to surround the auxiliary shaft and configured to rotate together with the auxiliary shaft,
an output gear meshing with the first gear,
an output shaft to which the output gear is fixed and which is connected to each of the plurality of compressors,
a first bearing rotatably supporting the auxiliary shaft, and
a second bearing rotatably supporting the output shaft.

2. The compressor system according to claim 1 ,
wherein the second bearing is a tilting pad bearing.

3. The compressor system according to claim 1 ,
wherein the plurality of compressors compress the gas having a molecular weight of 10 or less.

4. The compressor system according to claim 1 ,
wherein each of the plurality of the gear mechanisms is a planetary gear mechanism having a planetary gear as the first gear, and
the planetary gear mechanism has an internal gear fixed to the auxiliary shaft, formed in an annular shape centered on an axis of the output shaft, and meshing with a plurality of the planetary gears.

5. The compressor system according to claim 1 ,
wherein each of the plurality of the gear mechanisms includes
a first gear shaft to which the first gear is fixed and which is rotatable around a center line of the first gear,
a second gear fixed to the first gear shaft at a position distant from the first gear, and
a second auxiliary gear fixed to the auxiliary shaft at a position distant from the auxiliary gear and meshing with the second gear.

Assignees

• Mitsubishi Heavy Ind Compressor Corp

Inventors

• Miyata Hiroyuki
• Nagao Hideki
• Kobayashi Masahiro

Classifications

• F04D25/16

  Combinations of two or more pumps {; Producing two or more separate gas flows} · CPC title

• F04D17/10

  for compressing or evacuating · CPC title

• F16H1/28

  with gears having orbital motion · CPC title

• F04D25/163

  driven by a common gearing arrangement · CPC title

• F04D13/028 Primary

  the driving means being a planetary gear · CPC title