Regenerative pump and casing thereof
AssigneeNippondenso Co., Ltd.
InventorsMotoya Ito, Minoru Yasuda, Atsushige Kobayashi
Life of this patent
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Abstract
A regenerative pump includes a casing which a recessed fluid flow passage interconnecting a suction port and a discharge port is formed in an arcuate shape. An impeller is provided rotatably with respect to the casing and formed with a plurality of vane members which face the recessed fluid flow passage. A recessed damping portion is formed in a terminal end portion of the recessed fluid flow passage on a discharge port side thereof to begin at a position corresponding to the discharge port and extend along a rotating direction of the impeller. The recessed damping portion has a depth which is smaller than that of a main depth of the recessed fluid flow passage and substantially constant.
Claims21
A regenerative pump comprising:
- a casing which a recessed fluid flow passage interconnecting a suction port and a discharge port is formed in an arcuate shape;
- and
- an impeller provided rotatably with respect to said casing and formed with a plurality of vane members which face said recessed fluid flow passage, wherein a recessed damping portion is formed in a terminal end portion of said recessed fluid flow passage on a discharge port side thereof to begin at a position corresponding to the discharge port and extend along a rotating direction of said impeller, and said recessed damping portion has a depth which is smaller than that of a main depth of said recessed fluid flow passage and substantially constant.
A regenerative pump comprising:
- a casing in which a recessed fluid flow passage interconnecting a suction port and a discharge port is formed in an arcuate shape;
- and an impeller provided rotatably with respect to the formed with a plurality of vane members which face the recessed fluid flow passage, wherein a recessed damping portion is formed in a terminal end portion of said recessed fluid flow passage on a discharge port side thereof to begin at a position corresponding to the discharge port and extend along a rotating direction of said impeller, and said recessed damping portion is surrounded by a vertical wall which extends substantially perpendicularly to inner surfaces of said casing.
Dependencies are inferred from the claim text.