Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
EXPANDER INTEGRATED COMPRESSOR, AND REFRIGERATING CYCLE APPARATUS
Document Type and Number:
Japanese Patent JP2007315227
Kind Code:
A
Abstract:

To suppress the heat transfer from oil to refrigerant in the expansion mechanism, in an expander integrated compressor having a compression mechanism and an expansion mechanism contained in a casing.

The inside of the casing 91 is partitioned into an upper space 50a and a lower space 70a by means of a partition wall 64. The compression mechanism 50 is arranged in the upper space 50a, and the expansion mechanism 70 is arranged in the lower space 70a. An upper oil reservoir 44 is formed on the bottom portion of the upper space 50a, and a lower oil reservoir 43 is formed on the bottom portion of the lower space 70a. An oil pump 76 is arranged on the lower portion of the rotary shaft 75 of the compression mechanism 50, and an oil supply passage 63 is formed in the rotary shaft 75. An oil pump 72 is arranged on the lower portion of the rotary shaft 73 of the expansion mechanism 70, and an oil supply passage 86 is formed in the rotary shaft 73. An oil supply passage 47 for supplying the oil existing in the upper oil reservoir 44 to the lower space 70a, and a valve 48 for opening and closing the oil supply passage 47 are arranged in the partition wall 64.

COPYRIGHT: (C)2008,JPO&INPIT


Inventors:
KAN KAISEI
MATSUI MASARU
HASEGAWA HIROSHI
OKAICHI ATSUO
OGATA YUJI
WADA MASANOBU
TAKAHASHI YASUFUMI
Application Number:
JP2006143831A
Publication Date:
December 06, 2007
Filing Date:
May 24, 2006
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
F01C21/04; F01C13/04; F04B39/02; F04B39/10; F04B39/12; F04C18/02; F04C29/02; F25B11/02
Domestic Patent References:
JP2003139059A2003-05-14
JP2005299632A2005-10-27
JP2004324595A2004-11-18
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano