Scroll compressor

Patent metadata

Field	Value
Publication number	US-10240601-B2
Application number	US-201415113265-A
Country	US
Kind code	B2
Filing date	Oct 27, 2014
Priority date	Jan 22, 2014
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A scroll compressor has a sealed container inside which a working fluid is sealed; a frame fixed inside the sealed container; a fixed scroll provided with a fixed-side spiral body formed in a spiral shape on a fixed-side base plate fixed inside the sealed container; and a revolving scroll in which a revolving-side spiral body meshing with the fixed-side spiral body is provided on a revolving-side base plate. The frame includes a first welded point at which the frame is fixed by welding to the sealed container, and a revolving-scroll-receiving surface supports a bottom surface of the revolving-side base plate opposite to a surface thereof on which the revolving-side spiral body is provided. A frame outer peripheral groove provided in an outer periphery of the frame faces an inner periphery of the sealed container between the revolving-scroll-receiving surface and the first welded point.

First claim

The invention claimed is:

1. A scroll compressor, comprising:
a sealed container inside which a working fluid is sealed;
a frame fixed inside the sealed container;
a fixed scroll provided with a fixed-side spiral body formed in a spiral shape on a fixed-side base plate fixed inside the sealed container; and a revolving scroll in which a revolving-side spiral body meshing with the fixed-side spiral body is provided on a revolving-side base plate, the revolving scroll moving in a revolving manner,
wherein the frame includes a first welded point at which the frame is fixed by welding to the sealed container, a revolving-scroll-receiving surface supporting a bottom surface of the revolving-side base plate opposite to a surface thereof on which the revolving-side spiral body is provided, and a frame outer peripheral groove provided in an outer periphery of the frame facing an inner periphery of the sealed container and between the revolving-scroll-receiving surface and the first welded point, and
wherein a second welded point is provided between the frame outer peripheral groove and the revolving-scroll-receiving surface.

2. The scroll compressor according to claim 1 , wherein
the sealed container is fixed by plug welding to the frame and includes a first plug welding hole provided corresponding to the first welded point and a second plug welding hole corresponding to the second welded point, and
wherein the second plug welding hole has a smaller diameter than the first plug welding hole.

3. The scroll compressor according to claim 1 , wherein the frame outer peripheral groove has a rectangular cross-sectional shape when the frame is cut from the first welded point toward the revolving-scroll-receiving surface.

4. The scroll compressor according to claim 1 , wherein the frame outer peripheral groove is an annular groove extending all around the outer periphery of the frame.

5. The scroll compressor according to claim 1 , wherein
the frame includes a frame leg projecting from the outer periphery of the frame in a direction away from the revolving-scroll-receiving surface and along the inner periphery of the sealed container, and
wherein the first welded point is provided on the frame leg.

6. The scroll compressor according to claim 1 , including: a crankshaft provided on a bottom side of the revolving-side base plate to allow the revolving scroll to move in the revolving manner; and a frame bearing section provided at the frame to support the crankshaft in a slide bearing.

7. The scroll compressor according to claim 1 , wherein R32 refrigerant is used as the working fluid.

Assignees

• Johnson Controls—Hitachi Air Conditioning Tech Hong Kong Limited
• Hitachi Johnson Controls Air Conditioning Inc

Inventors

• Nakano Yasunori
• Hasegawa Shuji
• Nakamura Satoshi

Classifications

• F04C2210/268

  R32 · CPC title

• F04C2240/20

  Rotors · CPC title

• F04C18/0253 Primary

  Details concerning the base · CPC title

• F04C18/0215

  where only one member is moving · CPC title

• F01C21/10

  Outer members for co-operation with rotary pistons; Casings (casings for rotary engines or machines in general F16M) · CPC title