Title:
真空ポンプ
Document Type and Number:
Japanese Patent JP7327132
Kind Code:
B2
Abstract:
To provide a vacuum pump which is improved in the cooling efficiency of a bearing, and elongated in a lubrication life of the bearing.SOLUTION: A bearing 50 is accommodated in an internal space 11 of a base 10, and a shaft 40 is rotatably supported by an inner ring 51 of the bearing 50. An outer ring 52 of the bearing 50 is fixed to the base 10 by a bearing outer ring fixing member 3. A lower opening 11a of the internal space 11 is blocked by a blocking part 61 of a cover member 60. Heat is transmitted between the bearing outer ring fixing member 3 and the blocking part 61 by a protrusion 62 which protrudes toward the bearing outer ring fixing member 3 from the blocking part 61, and the cover member 60 is cooled by a cooling part 70.SELECTED DRAWING: Figure 2
Inventors:
Masatsugu Manabe
Application Number:
JP2019221114A
Publication Date:
August 16, 2023
Filing Date:
December 06, 2019
Export Citation:
Assignee:
SHIMADZU CORPORATION
International Classes:
F04D19/04; F04D29/056
Domestic Patent References:
| JP2014043789A | ||||
| JP2016056750A | ||||
| JP3199803U | ||||
| JP62197795U | ||||
| JP62197794U | ||||
| JP2015190331A | ||||
| JP2006226267A | ||||
| JP2014506981A |
Attorney, Agent or Firm:
Masahiro Nakagawa
Yoshito Fukushima
Go Sakane
Hideyuki Sawamura
Yoshito Fukushima
Go Sakane
Hideyuki Sawamura