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Patent Searching and Data


Title:
OPEN TYPE REFRIGERANT COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2018/030245
Kind Code:
A1
Abstract:
The objective of the present invention is to improve the lubricating performance of a rolling bearing and a shaft sealing member by making it possible to form a refrigerant guide channel on an inner circumferential surface of a bearing press fitting portion into which the rolling bearing is press fitted, without causing a deterioration in the performance of the rolling bearing. An open type refrigerant compressor (1) is provided with: a housing (2); provided inside the housing (2), a compressing mechanism which compresses a refrigerant gas including lubricating oil, and a drive shaft (5) which drives the compressing mechanism; a rolling bearing (7) which is press fitted into a shaft hole (8) through which the drive shaft (5) projects to the outside from the housing (2), and which axially supports the drive shaft (5); a shaft sealing member (9) which is provided in the shaft hole (8) in such a way as to be positioned to the outside of the rolling bearing (7); and at least one refrigerant guide channel (25) formed in an inner circumferential surface of a bearing press fitting portion (8a) into which the rolling bearing (7) is press fitted. The refrigerant guide channel (25) is formed in such a way as to have a prescribed angle of inclination α relative to the direction of a central axis line C of the drive shaft (5).

Inventors:
SATO, Hajime (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
MIYAMOTO, Yoshiaki (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
MIZUNO, Hisao (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
NOGUCHI, Akihiro (C/O CHURYO ENGINEERING CO. LTD, 60-1, Aza Kutanjo, Iwatsuka-cho, Nakamura-ku, Nagoya-sh, Aichi 62, 〒4530862, JP)
GOTO, Takashi (C/O CHURYO ENGINEERING CO. LTD, 60-1, Aza Kutanjo, Iwatsuka-cho, Nakamura-ku, Nagoya-sh, Aichi 62, 〒4530862, JP)
SHIKANAI, Toshiyuki (C/O CHURYO ENGINEERING CO. LTD, 60-1, Aza Kutanjo, Iwatsuka-cho, Nakamura-ku, Nagoya-sh, Aichi 62, 〒4530862, JP)
GOTO, Syusaku (C/O CHURYO ENGINEERING CO. LTD, 60-1, Aza Kutanjo, Iwatsuka-cho, Nakamura-ku, Nagoya-sh, Aichi 62, 〒4530862, JP)
Application Number:
JP2017/028130
Publication Date:
February 15, 2018
Filing Date:
August 02, 2017
Export Citation:
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Assignee:
MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. (16-5, Konan 2-Chome Minato-k, Tokyo 15, 〒1088215, JP)
International Classes:
F04B39/00; F04B39/02; F04C27/00; F04C29/02
Foreign References:
JP2005023849A2005-01-27
JPH10339286A1998-12-22
JP2005023849A2005-01-27
Other References:
See also references of EP 3450754A4
Attorney, Agent or Firm:
FUJITA, Takaharu (37F The Landmark Tower Yokohama, 2-2-1 Minatomirai, Nishi-ku, Yokohama-sh, Kanagawa 37, 〒2208137, JP)
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