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Patent Searching and Data


Title:
SLIDING BEARING AND PUMP
Document Type and Number:
WIPO Patent Application WO/2016/104535
Kind Code:
A1
Abstract:
The present invention relates to a sliding bearing (410) that is fixed to an axle opening (401) of an impeller (400) of a pump (100), and that rotatably supports the impeller (400) with respect to an axle (300), the sliding bearing being restricted in movement in the axle direction by a ring-shaped restriction member (310) fixed to the axle (300), wherein the sliding bearing has the following formed therein: lubrication grooves (412) that enables communication between a radial-direction inner side and outer side at an edge face (411) on the restriction member (310) side, and that lubricate by supplying cooling water onto the edge face (411); and dynamic pressure generation grooves (413) that generate dynamic pressure as a result of the introduction thereinto of the flow of the cooling water that occurs due to the rotation of the impeller (400). The present invention also relates to the pump (100), which is provided with the sliding bearing (410). Due to the foregoing, the present invention can mitigate an increase in rotational torque of the impeller (400) during high speed rotation.

Inventors:
YAMAMOTO SHINYA (JP)
YASU SATOSHI (JP)
HOSOE TAKESHI (JP)
TOKUNAGA YUICHIRO (JP)
CHIBA KEIICHI (JP)
Application Number:
JP2015/085884
Publication Date:
June 30, 2016
Filing Date:
December 22, 2015
Export Citation:
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Assignee:
EAGLE IND CO LTD (JP)
International Classes:
F16C17/10; F04B53/00; F04D13/02; F04D29/046; F16C33/10
Domestic Patent References:
WO2015146740A12015-10-01
Foreign References:
JP2005139917A2005-06-02
JP2012241774A2012-12-10
JPS63106427A1988-05-11
Other References:
See also references of EP 3239543A4
Attorney, Agent or Firm:
SERA Kazunobu et al. (JP)
Kazunobu Sera (JP)
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