Title:
潤滑剤水位制限装置を有する真空ポンプ
Document Type and Number:
Japanese Patent JP6933602
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a vacuum pump with a low-cost device, with which a lubricant level for a component of the vacuum pump to be lubricated can be adjusted and maintained correctly.SOLUTION: The vacuum pump has a lubricant level-limiting device 31 to limit the level 19 of a lubricant in a chamber 11 in which at least one component 13 to be lubricated by splash lubrication is arranged. The level-limiting device includes an overflow pipe 33 and a lubricant seal. The overflow pipe has a lower opening and an upper opening 41 projecting into the chamber, and is disposed in an opening 23 in a bottom 25 of the chamber. With the lubricant seal 45, the lower opening of the overflow pipe can be closed. Further, the upper opening of the overflow pipe is open and the position of the upper opening defines the level of lubricant in the chamber, and further, the upper opening is arranged adjacent to the component 13 to be lubricated.SELECTED DRAWING: Figure 6a
Inventors:
Christopher Cove
Application Number:
JP2018082058A
Publication Date:
September 08, 2021
Filing Date:
April 23, 2018
Export Citation:
Assignee:
Pfeiffer Vacuum Game Behr
International Classes:
F04B37/16; F04B35/01
Domestic Patent References:
| JP3117150U | ||||
| JP2014152811A | ||||
| JP2005226542A | ||||
| JP5967593U | ||||
| JP2002122089A |
Attorney, Agent or Firm:
Mitsufumi Esaki
Blacksmith
Shinsuke Nakamura
Blacksmith
Shinsuke Nakamura