Title:
SHAFT-SEALING DEVICE AND COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2016/103602
Kind Code:
A1
Abstract:
The present invention is a shaft-sealing device (20) for a compressor (51) and is provided with a rotating ring (22), which is fixed on a shaft (63) that is located inside a housing (53, 55, 57), and a fixed ring (21), which is fixed to a shaft hole formed in the housing and is for rotatably supporting the shaft that is inserted in the shaft hole. Multiple O-rings (23-26) for sealing between the housing and the fixed ring and/or between the shaft and the rotating ring are provided so as to line up side by side in the axial direction of the shaft. Of the multiple O-rings, the O-rings disposed on the coolant side towards the interior of the housing have better anti-foaming properties than the O-rings disposed on the atmospheric side towards the exterior of the housing. The O-rings disposed on the atmospheric side have better permeability resistance than the O-rings disposed on the coolant side. Such a configuration is able to satisfy the two requirements for anti-foaming properties and permeability resistance and is able to maintain sealing properties of the sealing surfaces for longer periods.
Inventors:
OKUMA TORU (JP)
AKIYAMA YOSHITAKA (JP)
TAKAHASHI TAKUTOU (JP)
AKIYAMA YOSHITAKA (JP)
TAKAHASHI TAKUTOU (JP)
Application Number:
PCT/JP2015/006088
Publication Date:
June 30, 2016
Filing Date:
December 08, 2015
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F16J15/34; F04B39/00; F16J15/18
Foreign References:
| JP2007198264A | 2007-08-09 | |||
| JP2006348851A | 2006-12-28 | |||
| JPS6391762U | 1988-06-14 | |||
| JP2002364534A | 2002-12-18 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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