Structural e water pump
US-2024401610-A1 · Dec 5, 2024 · US
Centrifugal pump
US9903388B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9903388-B2 |
| Application number | US-201514810549-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 28, 2015 |
| Priority date | Jul 29, 2014 |
| Publication date | Feb 27, 2018 |
| Grant date | Feb 27, 2018 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
What is claimed is: 1. A centrifugal pump comprising: a volute case having a volute internal flow channel formed therein; an impeller rotatably disposed in the volute case for forcing a fluid to flow along the volute internal flow channel; and at least two flow-channel recessed portions opening to the volute internal flow channel and formed so as to be recessed in a direction orthogonal to a direction of flow of the fluid, wherein respective parts of the at least two flow-channel recessed portions are successively smaller along the direction of flow of the fluid, each of the respective parts protruding from the volute internal flow channel in a radial outward direction of the impeller. 2. The centrifugal pump according to claim 1 , wherein the at least two flow-channel recessed portions each have an opening facing the volute internal flow channel, and a peripheral edge defining the opening, the peripheral edge having a straight section orthogonal to the direction of flow of the fluid.
Assignees
Inventors
Classifications
- F04D29/426Primary
especially adapted for liquid pumps · CPC title
Self-priming pumps · CPC title
suction eyes · CPC title
- F04D7/04Primary
the fluids being viscous or non-homogenous · CPC title
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- What does patent US9903388B2 cover?
- 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 dire…
- Who is the assignee on this patent?
- Honda Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F04D29/426. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 27 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).