Title:
GAS BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/162018
Kind Code:
A1
Abstract:
A gas bearing device according to one embodiment comprises: a housing that is provided around a rotary shaft and forms an annular gap between the housing and the rotary shaft; a top foil that is provided so as to surround the rotary shaft within the annular gap; and a backup foil member that is provided so as to surround the top foil on the outside of the top foil within the annular gap, and is configured to elastically support the top foil. The backup foil member is configured by: a middle side backup foil that is disposed in a middle side region that includes at least a center position in the axial direction of the rotary shaft, and is made up of a plurality of layers of back foils; and end side backup foils that are disposed in end side regions on both sides of the middle side region in the axial direction, and are made up of a single layer or a plurality of layers of backup foils having a number of layers less than that in the middle side region.
Inventors:
FUTAE TAKAYA (JP)
NISHIDA HIDEAKI (JP)
ISAYAMA SHUICHI (JP)
SHIBATA NAOMICHI (JP)
TANAKA SHINGO (JP)
NISHIDA HIDEAKI (JP)
ISAYAMA SHUICHI (JP)
SHIBATA NAOMICHI (JP)
TANAKA SHINGO (JP)
Application Number:
PCT/JP2022/007295
Publication Date:
August 31, 2023
Filing Date:
February 22, 2022
Export Citation:
Assignee:
MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD (JP)
International Classes:
F16C27/02; F16C17/02
Domestic Patent References:
| WO2021166395A1 | 2021-08-26 |
Foreign References:
| JP2021046913A | 2021-03-25 | |||
| JP2005009556A | 2005-01-13 |
Attorney, Agent or Firm:
SSIP PATENT ATTORNEY CORPORATION (JP)
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