Scroll compressor
US-10125769-B2 · Nov 13, 2018 · US
Scroll compressor with non-uniform gap
US11047384B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11047384-B2 |
| Application number | US-201716313642-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 30, 2017 |
| Priority date | Jul 6, 2016 |
| Publication date | Jun 29, 2021 |
| Grant date | Jun 29, 2021 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A scroll compressor includes fixed and orbiting scrolls, and satisfies at least one of a first condition and a second condition. In the first condition, a first gap between a distal end of the first wrap and the second base changes heading from an outer peripheral side of the first wrap to an inner peripheral side. In the second condition, a second gap between a distal end of the second wrap and the first base changes heading from an outer peripheral side of the second wrap to an inner peripheral side. A rate of change in the first gap in one area is greater than a rate of change in the first gap in another area. A rate of change in the second gap in one area is greater than a rate of change in the second gap in another area.
First claim
Opening claim text (preview).
What is claimed is: 1. A scroll compressor comprising: a fixed scroll having a first base and a first wrap with a spiral shape formed on the first base; and an orbiting scroll that forms a compression chamber together with the fixed scroll, the orbiting scroll having a second base and a second wrap with a spiral shape formed on the second base, the scroll compressor satisfying at least one of a first condition in which a first gap between a distal end of the first wrap and the second base changes heading from an outer peripheral side of the first wrap to an inner peripheral side and a rate of change in the first gap from a center of the first wrap to an intermediate point of the first wrap is 4.5 to 5.5 times greater than a rate of change in the first gap from the intermediate point of the first wrap to an outer peripheral end of the first wrap, the intermediate point of the first wrap being disposed at 540° from the center of the first wrap, and a second condition in which a second gap between a distal end of the second wrap and the first base changes heading from an outer peripheral side of the second wrap to an inner peripheral side and a rate of change in the second gap from a center of the second wrap to an intermediate point of the second wrap is 4.5 to 5.5 times greater than a rate of change in the second gap from the intermediate point of the second wrap to an outer peripheral end of the second wrap, the intermediate point of the second wrap being disposed at 540° from the center of the second wrap. 2. The scroll compressor according to claim 1 , wherein the first gap changes in a stepwise manner heading from the outer peripheral side of the first wrap to the inner peripheral side, and the second gap changes in a stepwise manner heading from the outer peripheral side of the second wrap to the inner peripheral side. 3. The scroll compressor according to claim 2 , wherein at least one of the first wrap and the second base is formed in a stepwise manner, whereby the first gap changes in a stepwise manner heading from the outer peripheral side of the first wrap to the inner peripheral side, at least one of the second wrap and the first base is formed in a stepwise manner, whereby the second gap changes in a stepwise manner heading from the outer peripheral side of the second wrap to the inner peripheral side, the at least one of the first wrap and the second base includes at least one step portion in a range from the center of the first wrap to the intermediate point of the first wrap, and the at least one of the second wrap and the first base includes at least one step portion in a range from the center of the second wrap to the intermediate point of the second wrap. 4. The scroll compressor according to claim 1 , wherein the fixed scroll and the orbiting scroll compress refrigerant that includes more than 50 wt % R32 as refrigerant.
Assignees
Inventors
Classifications
Casings or housings · CPC title
Gap; Clearance · CPC title
- F04C18/0276Primary
Different wall heights · CPC title
- F04C18/0215Primary
where only one member is moving · CPC title
R32 · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11047384B2 cover?
- A scroll compressor includes fixed and orbiting scrolls, and satisfies at least one of a first condition and a second condition. In the first condition, a first gap between a distal end of the first wrap and the second base changes heading from an outer peripheral side of the first wrap to an inner peripheral side. In the second condition, a second gap between a distal end of the second wrap an…
- Who is the assignee on this patent?
- Daikin Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification F04C18/0276. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 29 2021 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).