Centrifugal pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Jul 28, 2015
filing date -
Jul 29, 2014
priority date (Note) -
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Abstract
A centrifugal pump includes an impeller rotatably disposed in a volute case for forcing a fluid to flow along a volute internal flow channel formed in the volute case, and first to fourth flow-channel recessed portions opening to the volute internal flow channel. The first and fourth flow-channel recessed portions are formed so as to be recessed in a direction substantially orthogonal to a direction of flow of the fluid. In a self-priming operation, the fluid is introduced into the first and fourth recessed portions whereupon the prime fluid is stirred within internal spaces of the first and second flow-channel recessed portions.
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