Scroll pump having axially compliant spring element
US-9429020-B2 · Aug 30, 2016 · US
Scroll fluid machine including a pair of fixed scrolls and an orbiting scroll
US10844719B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10844719-B2 |
| Application number | US-201615544186-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 22, 2016 |
| Priority date | Jan 28, 2015 |
| Publication date | Nov 24, 2020 |
| Grant date | Nov 24, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
One of a pair of a fixed scroll and an orbiting scroll is the scroll including a step portion provided only at a predetermined position along a spiral direction on a blade bottom surface of a spiral wrap, and the other one of the scrolls is the scroll including a step portion provided only at a predetermined position along a spiral direction on a blade tip surface of a spiral wrap. A blade bottom surface of an end plate of the fixed scroll is set as a reference surface for setting a chip gap between both the scrolls. When a wrap height of the spiral wrap of the orbiting scroll is represented by (L) (Lo, Li) and a wrap height of the spiral wrap of the fixed scroll is represented by (lo, li), L (Lo, Li)>1 (lo, li) is satisfied.
First claim
Opening claim text (preview).
The invention claimed is: 1. A scroll fluid machine comprising: a pair of a fixed scroll and an orbiting scroll having a structure in which spiral wraps are erected on end plates, respectively, and the spiral wraps engage with each other, wherein one of the fixed scroll and the orbiting scroll is a scroll including a step portion provided only at a predetermined position along a spiral direction on a blade bottom surface of the spiral wrap, and the other one of the fixed scroll and the orbiting scroll is a scroll including a step portion provided only at a predetermined position along a spiral direction on a blade tip surface of the spiral wrap, an entire blade bottom surface of the end plate of the scroll which does not include the step portion on the blade bottom surface is set as a reference surface for setting a chip gap between the blade bottom surface of the end plate of the scroll and the blade tip surface of the spiral wrap of a counterpart scroll to engage with the scroll, a wrap height of the spiral wrap of the scroll including the step portion on the blade bottom surface is made to be equal to a distance from the reference surface to the blade bottom surface on which the step portion is formed, and when the wrap height of the spiral wrap of the scroll including the step portion on the blade bottom surface is represented by L and a wrap height of the spiral wrap of the scroll which does not include the step portion on the blade bottom surface is represented by 1, L>1 is satisfied, so that the blade tip surface of the scroll including the step portion on the blade bottom surface is brought into contact with the reference surface, and the blade tip surface of the scroll which does not include the step portion on the blade bottom surface is not brought into contact with the blade bottom surface of the scroll including the step portion on the blade bottom surface. 2. The scroll fluid machine according to claim 1 , wherein the fixed scroll is the scroll which does not include the step portion on the blade bottom surface.
Assignees
Inventors
Classifications
Details of the wrap tips · CPC title
Axially-movable sealings for working fluids · CPC title
Different wall heights · CPC title
- F01C1/0215Primary
where only one member is moving · CPC title
where only one member is moving · CPC title
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Frequently asked questions
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- What does patent US10844719B2 cover?
- One of a pair of a fixed scroll and an orbiting scroll is the scroll including a step portion provided only at a predetermined position along a spiral direction on a blade bottom surface of a spiral wrap, and the other one of the scrolls is the scroll including a step portion provided only at a predetermined position along a spiral direction on a blade tip surface of a spiral wrap. A blade bott…
- Who is the assignee on this patent?
- Mitsubishi Heavy Ind Thermal Systems Ltd
- What technology area does this patent fall under?
- Primary CPC classification F01C1/0215. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Nov 24 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).