Centrifugal pump for cryogenic pumped media

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10954952
APP PUB NO 20190085858A1
SERIAL NO

16134260

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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In a rotary direct-drive single-stage or multi-stage centrifugal pump (1) for cryogenic liquids, having a pump housing (2) for the pump (1) and an electric drive motor unit (12) in a motor housing (10) serving as a pump drive, wherein a shaft (11) of the drive motor unit (12) is mounted on two roller bearings (20; 21), and wherein at least one roller bearing (20; 21) is an unlubricated roller bearing, the structural design of the centrifugal pump (1) should be kept as simple as possible. This is achieved in that at least a first communicating connection, in particular a direct connecting channel (16), is configured between the pressure side (D) in the pump housing (2) and the roller bearing (21) on the pump housing side for a diverted part (FA1) of the main conveying flow (FH) of the cryogenic pumped medium to the roller bearing (21), and that a second communicating connection is configured between the roller bearing (21) on the pump housing side and the suction side (S) for the diverted part (FA2) of the cryogenic pumped medium back to the suction side (S) in the main conveying flow (FH) of the cryogenic pumped medium, so that a circulation of the diverted part (FA1, FA2) of the cryogenic pumped medium is ensured between the pressure side (D) in the pump housing (2) and only the roller bearing (21) on the pump housing side.

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Patent Owner(s)

Patent OwnerAddress
FIVES CRYOMEC AG4123 ALLSCHWIL

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boeglin, Stéphane Liebenswiller, FR 1 0

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