Multistage sealed coolant pump

Details Multistage sealed coolant pump Multistage sealed coolant pump

2006-05-23

2006-05-23

Freay, Charles G. (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

C417S366000, C417S313000, C417S423500

Reexamination Certificate

active

07048520

ABSTRACT:
A multistage sealed pump is provided for use in an X-ray tube cooling system which is substantially more efficient than pumps of known construction and which provides substantially higher pumping pressure at lower motor current than conventionally. The pump employs multiple impellers which are plumbed in series and which are directly coupled to an electrical motor which with the impellers is submerged and runs in the coolant liquid. The impellers and motor are sealed within a housing and the pump unit is hermetically sealed, with no rotatable shaft seals being used or required. In one embodiment, the multistage pump employs a motor having oppositely extending motor shaft ends, with one or more impellers on each end of the motor shaft. The cooling liquid can be transferred from stage to stage by interconnecting tubing external of the housing or within the housing, through a hollow motor shaft, or through the motor casing. In another embodiment, the multiple impellers can be directly mounted on a shaft extending from a single end of the motor.

REFERENCES:
patent: 4105372 (1978-08-01), Mishina et al.
patent: 4229142 (1980-10-01), Le Dall et al.
patent: 4969803 (1990-11-01), Turanskyj
patent: 5215448 (1993-06-01), Cooper
patent: 5888053 (1999-03-01), Kobayashi et al.
patent: 6074092 (2000-06-01), Andrews
patent: 6155802 (2000-12-01), Choi et al.

Affiliated with

Also associated with

Rating

Multistage sealed coolant pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multistage sealed coolant pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multistage sealed coolant pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3646504