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Patent Searching and Data


Title:
COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2013/179658
Kind Code:
A1
Abstract:
A compressor has a drive shaft (3) supported by an upper bearing (7) and a lower bearing (9), a discharge port (22) provided in the lower bearing (9), and a lower discharge space (15b) composed of the lower bearing (9) and a lower valve cover (16b) for receiving hydraulic fluid compressed in a lower compression chamber (11b) and discharged from the discharge port (22). An oil holding unit (24) is provided adjacent to the lower discharge space (15b) which has a configuration that receives some of the oil stored in a sealed container (1) with an oil reservoir (19) in the bottom portion but suppresses the flow of the received oil more than the flow of the oil in the oil reservoir (19). Because the lower end surface of a boss (9a) in the central portion of the lower bearing (9) has a height which is equal to or lower than the lowest surface of the lower valve cover (16b), gas does not accumulate in the lower end portion of the drive shaft (3) which draws in the oil used to lubricate and seal the compression mechanism internally, thereby providing a compressor that is both highly efficient and highly reliable.

Inventors:
YOSHIDA HIROFUMI
OGATA TAKESHI
SHIOTANI YU
FUNAKOSHI DAISUKE
NAKAI HIROAKI
KARINO TSUYOSHI
Application Number:
PCT/JP2013/003382
Publication Date:
December 05, 2013
Filing Date:
May 29, 2013
Export Citation:
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Assignee:
PANASONIC CORP (JP)
International Classes:
F04C29/04; F04B39/06; F04C18/356
Foreign References:
JP2009002299A2009-01-08
JP2007177633A2007-07-12
JP2007309146A2007-11-29
JP2009127608A2009-06-11
JP2009002299A2009-01-08
JP2009127608A2009-06-11
Other References:
See also references of EP 2857690A4
Attorney, Agent or Firm:
ABE, Shinichi et al. (JP)
Shin-ichi Abe (JP)
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