Gas compressor

Patent metadata

Field	Value
Publication number	US-2015132168-A1
Application number	US-201314401217-A
Country	US
Kind code	A1
Filing date	May 20, 2013
Priority date	Jun 4, 2012
Publication date	May 14, 2015
Grant date	—

Abstract

A compressor ( 100 ) comprises: a compressor main body ( 60 ) being formed so that one cycle of stroke is performed by a compression room ( 43 ) which is partitioned by a rotor ( 50 ), cylinder ( 40 ), both side blocks ( 20, 30 ), and vanes ( 58 ) during one revolution of the rotor ( 50 ); a cyclone block ( 70 ) which separates a refrigerant oil (R) from refrigerant gas (G), wherein a second discharge section ( 46 ) which discharge the refrigerant gas (G) when the pressure inside the compression room ( 43 ) reaches the discharge pressure before the compression room ( 43 ) faces a first discharge section ( 45 ) is formed, and a communicating path ( 39 ) which connects a discharge chamber ( 45 a ) in the first discharge section ( 45 ) and a discharge chamber ( 46 a ) in the second discharge section ( 46 ) is formed on the upper stream side of than the cyclone block ( 70 ).

First claim

1 . A gas compressor comprising:
an approximately cylindrical rotor being rotatable around a shaft; a cylinder having an inner circumferential surface which has a contour shape surrounding the rotor from the outside of an outer circumferential surface of the rotor; a plurality of plate-like vanes disposed to be projectable from the rotor toward the outside by a back pressure from a vane groove which is formed in the rotor; two side blocks contacting and shielding both end surfaces of the rotor and the cylinder; a compressor main body including inside thereof a plurality of compression rooms which are partitioned by the rotor, the cylinder, the two side blocks, and the vanes, and each compression room being formed so as to perform only one cycle of suction, compression, and discharge of the gas through the first discharge section in the cylinder during one revolution of the rotor; and an oil separator separating oil from the gas discharged from the compressor main body, the oil being separated from the gas while the gas passes through the oil separator, wherein the cylinder includes a second discharge section discharging the gas inside the compression room when the pressure of the gas inside the compression room reaches the discharge pressure before the compression room faces the first discharge section by the rotation of the rotor, and a communicating path connecting the first discharge section and the second discharge section is formed on an upper stream side of a flow of the gas than the oil separator.

2 . The gas compressor according to claim 1 , wherein a discharge path connecting the first discharge section and the oil separator is formed.

3 . The gas compressor according to claim 1 , wherein the communicating path is a cutout section or a through-hole which is formed on the outer-circumferential surface of the cylinder and connects the first discharge section and the second discharge section.

4 . The gas compressor according to claim 1 , wherein the communicating path is a groove which is formed on at least one of the two side blocks and connects the first discharge section and the second discharge section.

5 . The gas compressor according to claim 1 , wherein a discharge path connecting the first discharge section and the oil separator is formed, and the communicating path is a cutout section or a through-hole which is formed on the outer-circumferential surface of the cylinder and connects the first discharge section and the second discharge section.

6 . The gas compressor according to claim 1 , wherein a discharge path connecting the first discharge section and the oil separator is formed, and the communicating path is a groove which is formed on at least one of the two side blocks and connects the first discharge section and the second discharge section.

Assignees

• Calsonic Kansei Corp

Inventors

• Tsuda Masahiro
• Shimaguchi Hirotada
• Osaki Tatsuya
• Hirono Kouji
• Kaneko Shizuma

Classifications

• F04C2/22

  of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member · CPC title

• F04C15/06 Primary

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title

• F04C18/3441

  the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation · CPC title

• F04C23/008 Primary

  Hermetic pumps · CPC title

• F04C29/026

  Lubricant separation · CPC title