Diffuser and method of operating diffuser
US-2015377249-A1 · Dec 31, 2015 · US
Compressor for supercharger of internal combustion engine
US10280936B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10280936-B2 |
| Application number | US-201214412719-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 6, 2012 |
| Priority date | Jul 6, 2012 |
| Publication date | May 7, 2019 |
| Grant date | May 7, 2019 |
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- Title
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Abstract
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In a compressor for a supercharger of an internal combustion engine comprising a shroud, an impeller, a vaneless diffuser, and a scroll, a hub-side wall of the vaneless diffuser is formed to be inclined to the opposite side to a shroud-side wall with respect to a direction perpendicular to a rotational axis of the impeller in the longitudinal cross section including the rotational axis of the impeller. With such a configuration, the amount of deposit formed on the hub-side wall of the vaneless diffuser is reduced.
First claim
Opening claim text (preview).
The invention claimed is: 1. A compressor for a supercharger of an internal combustion engine, comprising: a shroud formed inside a housing; an impeller having a hub rotatably disposed in the shroud and a plurality of blades attached to a surface of the hub, the surface comprising intersections with each of the blades and the hub; an annular vaneless diffuser that surrounds a periphery of the impeller; and a spiral scroll that surrounds a periphery of the vaneless diffuser, wherein the entire shroud-side wall and the entire hub-side wall of the vaneless diffuser are formed to be inclined in a direction toward the hub-side wall with respect to a direction perpendicular to the rotational axis of the impeller, and the entire shroud-side wall and the entire hub-side wall of the vaneless diffuser are formed to be inclined with respect to a line tangent to the surface at an outlet point of the hub. 2. The compressor for a supercharger of an internal combustion engine according to claim 1 , wherein the hub-side wall of the vaneless diffuser is formed to have the shape of a truncated conical surface. 3. The compressor for a supercharger of an internal combustion engine according to claim 1 , wherein the shroud-side wall of the vaneless diffuser is formed to be in parallel with a direction of the flow of oil mist ejected from the impeller. 4. The compressor for a supercharger of an internal combustion engine according to claim 1 , wherein the shroud-side wall of the vaneless diffuser is formed to have the shape of a truncated conical surface.
Assignees
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Classifications
for compressing or evacuating · CPC title
Outlet · CPC title
especially adapted for elastic fluid pumps · CPC title
the axes being inclined in relation to each other · CPC title
Bladed diffusers · CPC title
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- What does patent US10280936B2 cover?
- In a compressor for a supercharger of an internal combustion engine comprising a shroud, an impeller, a vaneless diffuser, and a scroll, a hub-side wall of the vaneless diffuser is formed to be inclined to the opposite side to a shroud-side wall with respect to a direction perpendicular to a rotational axis of the impeller in the longitudinal cross section including the rotational axis of the i…
- Who is the assignee on this patent?
- Yoeda Keiji, Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F04D29/422. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 07 2019 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).