Title:
INTERNAL INTERMEDIATE PRESSURE-TYPE TWO-STAGE COMPRESSION COMPRESSOR
Document Type and Number:
Japanese Patent JP2018188986
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an internal intermediate pressure-type two-stage compression compressor capable of preventing a lubricant from flowing more than it is set to a compression chamber of a high stage side.SOLUTION: A compressor has a first compression mechanism portion 30A performing low-stage compression of first stage, and a second compression mechanism portion 30B performing high-stage compression of second stage, as a compression mechanism portion 30, a lubricant supply passage 36 is formed on an intake passage 35B of the second compression mechanism portion 30B, a refrigerant gas compressed by the first compression mechanism portion 30A is discharged into a sealed container 10, the refrigerant gas is compressed by the second compression mechanism portion 30B and discharged to the outside of the sealed container 10, the lubricant is supplied from the lubricant supply passage 36 to a second compression chamber 34B of the second compression mechanism portion 30B by differential pressure between a case internal pressure of the sealed container 10 and a suction pressure in the intake passage 35B of the second compression mechanism portion 30B, and a sealed space 106 is not formed among a vane 33, a cylinder 31B and the piston 32B in swirling the piston 32B from the top dead center to a position of the intake passage 35B.SELECTED DRAWING: Figure 3
Inventors:
MATSUZAKI AKIRA
SATO TAKASHI
SATO TAKASHI
Application Number:
JP2017089843A
Publication Date:
November 29, 2018
Filing Date:
April 28, 2017
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
F04C29/02; F04C18/356; F04C23/02
Attorney, Agent or Firm:
Shinichi Abe
Yoshihiro Shimizu
Yuji Tsujida
Takaaki Ota
Yoshihiro Shimizu
Yuji Tsujida
Takaaki Ota