Ventilation and purge of a hydrogen blower

Details Ventilation and purge of a hydrogen blower Ventilation and purge of a hydrogen blower

2006-04-04

2006-04-04

Freay, Charles G. (Department: 3746)

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

C417S423800, C417S423110, C415S168200

Reexamination Certificate

active

07021907

ABSTRACT:
A hydrogen blower is provided and includes a housing having a drive unit and a compressor unit disposed therein. The drive unit is separated from the compressor unit by a neutral chamber, whereby the neutral chamber effectively seals the drive unit from the compressor unit. The drive unit includes a drive shaft, whereby the drive shaft extends generally between the drive unit and the compressor unit to selectively drive the compressor. In addition, the drive shaft fixedly supports a series of fan blades such that rotation of the drive shaft imparts a pressure on the neutral chamber to effectively seal the drive unit from the compressor unit. In this manner, the drive motor, compressor, and drive shaft may be packaged in a single housing while effectively sealing the drive unit from the compressor unit through cooperation between the fan blades and the neutral chamber.

REFERENCES:
patent: 3532444 (1970-10-01), Strub
patent: 4527960 (1985-07-01), DeSisto
patent: 4764086 (1988-08-01), Jesinger
patent: 6203294 (2001-03-01), Turley et al.
patent: 2003/0053907 (2003-03-01), Lippert et al.
patent: 1097614 (1961-01-01), None
patent: 1293390 (1969-04-01), None
patent: 2002246058 (2002-08-01), None
Drawing of prior art blower design, date unknown.

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