Compressor

Patent metadata

Field	Value
Publication number	US-10746162-B2
Application number	US-201816169189-A
Country	US
Kind code	B2
Filing date	Oct 24, 2018
Priority date	Nov 20, 2017
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

The present application discloses a compressor including a crank shaft, a first reciprocation converter, a first cylinder body, a first pressurizing portion, a second reciprocation converter, which is connected to the crank shaft with a phase different by 180 degrees from the first reciprocation converter, a second cylinder body, a second pressurizing portion, and a connecting portion configured to interconnect the compression chambers. The compression chambers are arranged so that a timing at which the gas is discharged from a specific compression chamber among the compression chambers becomes the same as a timing at which the discharged gas is suctioned into another compression chamber at a higher side by one stage than the specific compression chamber.

First claim

The invention claimed is:

1. A compressor comprising:
a first cylinder body including at least two compression chambers which are linearly aligned;
a first pressurizing portion configured to compress gas in the at least two compression chambers;
a second cylinder body including at least one compression chamber;
a second pressurizing portion configured to compress the gas in the at least one compression chamber with a predetermined phase difference between the first and second pressurizing portions; and
a connecting portion configured to interconnect the compression chambers,
wherein the compression chambers are arranged so that a timing at which the gas is discharged from each compression chamber is concurrent with a timing at which the gas is suctioned to another compression chamber at a higher side by one stage,
wherein the first cylinder body includes
a first low-stage cylinder having a first compression chamber, which is a compression chamber at a side of a lowest stage among the at least two compression chambers, and
a first mid-stage cylinder having a third compression chamber, which is a compression chamber at a higher side by two stages than the first compression chamber,

wherein the first pressurizing portion is configured to simultaneously compress the gas in the first and third compression chambers,
wherein the second cylinder body includes a second low-stage cylinder having a second compression chamber as the at least one compression chamber, the second compression chamber being a compression chamber at a higher side by one stage than the first compression chamber,
wherein the connecting portion includes
a first connecting path configured to interconnect the first and second compression chambers, and
a second connecting path configured to interconnect the second and third compression chambers,

wherein the second cylinder body further includes a second high-stage cylinder having a fourth compression chamber which is linearly aligned with the second compression chamber, the fourth compression chamber being a compression chamber at a higher side by one stage than the third compression chamber,
wherein the second pressurizing portion is configured to simultaneously compress the gas in the second and fourth compression chambers, and
wherein the connecting portion further includes a third connecting path configured to interconnect the third and fourth compression chambers.

2. The compressor according to claim 1 ,
wherein the first cylinder body further includes a first high-stage cylinder having a fifth compression chamber which is linearly aligned with the third compression chamber, the fifth compression chamber being a compression chamber at a higher side by one stage than the fourth compression chamber,
wherein the first pressurizing portion is configured to simultaneously compress the gas in the first, third and fifth compression chambers, and
wherein the connecting portion further includes a fourth connecting path configured to interconnect the fourth and fifth compression chambers.

3. A compressor comprising:
a first cylinder body including at least two compression chambers which are linearly aligned;
a first pressurizing portion configured to compress gas in the at least two compression chambers;
a second cylinder body including at least one compression chamber;
a second pressurizing portion configured to compress the gas in the at least one compression chamber with a predetermined phase difference between the first and second pressurizing portions; and
a connecting portion configured to interconnect the compression chambers,
wherein the compression chambers are arranged so that a timing at which the gas is discharged from each compression chamber is concurrent with a timing at which the gas is suctioned to another compression chamber at a higher side by one stage,
wherein the first cylinder body includes a first low-stage cylinder having a first compression chamber, which is a compression chamber at a side of a lowest stage among the at least two compression chambers, and a second compression chamber, which is a compression chamber at a higher side by one stage than the first compression chamber,
wherein the first pressurizing portion compresses the gas in the first compression chamber when the first pressurizing portion moves to one side in the first low-stage cylinder along a sliding direction, and compresses the gas in the second compression chamber when the first pressurizing portion moves to another side along the sliding direction,
wherein the second cylinder body includes a second low-stage cylinder having a third compression chamber as the at least one compression chamber, the third compression chamber being a compression chamber at a higher side by one stage than the second compression chamber,
wherein the second pressurizing portion compresses the gas in the third compression chamber concurrently with the first pressurizing portion compressing the gas in the first compression chamber,
wherein the connecting portion includes
a first connecting path configured to interconnect the first and second compression chambers, and
a second connecting path configured to interconnect the second and third compression chambers,

wherein the first cylinder body further includes a first high-stage cylinder having a fourth compression chamber which is linearly aligned with the second compression chamber, the fourth compression chamber being a compression chamber at a higher side by one stage than the third compression chamber,
wherein the first pressurizing portion is configured to simultaneously compress the gas in the second and fourth compression chambers, and
wherein the connecting portion further includes a third connecting path configured to interconnect the third and fourth compression chambers.

4. The compressor according to claim 3 ,
wherein the second cylinder body further includes a second high-stage cylinder having a fifth compression chamber linearly aligned with the third compression chamber, the fifth compression chamber being a compression chamber at a higher side by one stage than the fourth compression chamber,
wherein the second pressurizing portion is configured to simultaneously compress the gas in the third and fifth compression chambers, and
wherein the connecting portion further includes a fourth connecting path configured to interconnect the fourth and fifth compression chambers.

Assignees

• Kobe Steel Ltd

Inventors

• Nagura Kenji
• Fukuda Takayuki
• Yamasaki Ryosuke
• Ootsuka Tomohiro

Classifications

• F04B25/04

  having cylinders coaxial with, or parallel or inclined to, main shaft axis · CPC title

• F04B25/02

  of stepped piston type · CPC title

• F04B25/005 Primary

  with two cylinders · CPC title

• F04B39/123

  Fluid connections · CPC title

• F04B37/12

  to obtain high pressure · CPC title