Thrust bearing assembly with flow path restriction
US-9896965-B2 · Feb 20, 2018 · US
Centrifugal turbo machinery
US10801520B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10801520-B2 |
| Application number | US-201816102971-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 14, 2018 |
| Priority date | Aug 16, 2017 |
| Publication date | Oct 13, 2020 |
| Grant date | Oct 13, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A centrifuge turbo machinery includes an impeller which rotates about an axis to pressure-feed fluid flowing along the axis to an outer side in a radial direction, and a casing which accommodates the impeller and has a facing surface facing the impeller in an axial direction. A convex portion relatively close to the impeller and extending in the radial direction and a concave portion relatively spaced apart from the impeller and extending in the radial direction are alternately and continuously formed on the facing surface in a circumferential direction.
First claim
Opening claim text (preview).
What is claimed is: 1. A centrifuge turbo machinery comprising: an impeller which rotates around an axis to pressure-feed fluid flowing along the axis to an outer side in a radial direction; and a casing which accommodates the impeller and has a facing surface facing the impeller in an axial direction, wherein a convex portion, which is relatively close to the impeller and extending in the radial direction, and a concave portion, which is relatively spaced apart from the impeller and extending in the radial direction, are alternately and continuously formed on the facing surface in a circumferential direction, wherein the impeller includes a disc fixed to a shaft for rotating the impeller, a plurality of blades provided on the disc, and a cover which covers the blade, and wherein the facing surface has a surface facing the disc in the casing in the axial direction, and a surface facing the cover in the casing in the axial direction. 2. The centrifuge turbo machinery according to claim 1 , wherein the convex portion and the concave portion are formed in an entire region of a portion of the facing surface facing the disc and an entire region of a portion of the facing surface facing the cover. 3. The centrifuge turbo machinery according to claim 1 , wherein the convex portion and the concave portion are formed only in a partial region of the facing surface facing the disc on a radially outer side in the radial direction and a partial region of the facing surface facing the cover on a radially outer side in the radial direction. 4. A centrifuge turbo machinery comprising: an impeller which rotates around an axis to pressure-feed fluid flowing along the axis to an outer side in a radial direction; and a casing which accommodates the impeller and has a facing surface facing the impeller in an axial direction, wherein a convex portion, which is relatively close to the impeller and extending in the radial direction, and a concave portion, which is relatively spaced apart from the impeller and extending in the radial direction, are alternately and continuously formed on the facing surface in a circumferential direction, and wherein an inclination from a bottom end of the concave portion to a protruding end of the convex portion of the impeller in the rotational direction is greater than an inclination from a protruding end of the convex portion to a bottom end of the concave portion of the impeller in the rotational direction.
Assignees
Inventors
Classifications
- F04D29/2272Primary
for influencing flow or boundary layer · CPC title
with special measures · CPC title
of the vertically split casing type · CPC title
especially adapted for elastic fluid pumps · CPC title
for compressors · CPC title
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Frequently asked questions
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- What does patent US10801520B2 cover?
- A centrifuge turbo machinery includes an impeller which rotates about an axis to pressure-feed fluid flowing along the axis to an outer side in a radial direction, and a casing which accommodates the impeller and has a facing surface facing the impeller in an axial direction. A convex portion relatively close to the impeller and extending in the radial direction and a concave portion relatively…
- Who is the assignee on this patent?
- Mitsubishi Heavy Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification F04D29/2272. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Oct 13 2020 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).