Scroll member and scroll-type fluid machine

Patent metadata

Field	Value
Publication number	US-9752579-B2
Application number	US-201415025017-A
Country	US
Kind code	B2
Filing date	Sep 29, 2014
Priority date	Sep 27, 2013
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

A scroll member includes a base having a panel and a spiral blade provided to extend from the panel toward another scroll member, resin layer L 1 formed on the base, and a plurality of grooves C formed on a surface of the resin layer. The plurality of grooves C are formed on the surface of resin layer L 1 . A cross-section of each groove C has a shape similar to a U-shape or a semicircle in which the width decreases toward the deeper position and the rate of change in width increases toward the bottom. Grooves C are formed by moving an edge of a cutting tool along the original surface of the resin layer, which is originally formed on base L 0 by application or the like.

First claim

The invention claimed is:

1. A scroll member arrangement comprising:
first and second scroll members interleaved with each other, the first scroll member comprising a panel and a spiral blade extending from the panel towards the second scroll member;
a resin layer formed on the spiral blade; and
a plurality of grooves formed on a surface of the resin layer of said spiral blade, each of the plurality of said grooves having a depth that is smaller than a pitch between two of the plurality of said grooves.

2. The scroll member according to claim 1 ,
wherein the plurality of said grooves have a width that is smaller than or equal to a pitch between adjacent grooves of the plurality of grooves.

3. The scroll member according to claim 1 ,
wherein the plurality of said grooves are formed in a direction other than along the length of the blade.

4. The scroll member according to claim 1 ,
wherein the plurality of said grooves have a spiral shape.

5. The scroll member according to claim 1 ,
wherein the plurality of said grooves are formed so as to be connected to other grooves formed on a surface adjacent to the surface on which the plurality of said grooves are formed.

6. A scroll fluid machine comprising:
a scroll member arrangement comprising:
first and second scroll members interleaved with each other, the first scroll member comprising a panel and a spiral blade extending from the panel towards the second scroll member;
a resin layer formed on the spiral blade; and
a plurality of grooves formed on a surface of the resin layer of said spiral blade, each of the plurality of said grooves having a depth that is smaller than a pitch between two of the plurality of said grooves;

wherein the second scroll member increases or reduces a volume of a space formed by the first and second scroll members through engagement with the first scroll member and rotating relative thereto.

Assignees

• Taiho Kogyo Co Ltd

Inventors

• Kanemitsu Hiroshi
• Akizuki Masanori

Classifications

• F04C18/0215

  where only one member is moving · CPC title

• F04C2230/91

  Coating · CPC title

• F04C18/0284 Primary

  Details of the wrap tips · CPC title

• F01C19/005

  Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements (vane construction F01C21/0809; piston rings and ring sealings of similar construction in general F16J9/00) · CPC title

• F01C19/08

  Axially-movable sealings for working fluids · CPC title