Fixed scroll disk and scroll compressor having the same

Patent metadata

Field	Value
Publication number	US-11767844-B2
Application number	US-202117461276-A
Country	US
Kind code	B2
Filing date	Aug 30, 2021
Priority date	Aug 31, 2020
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

The present disclosure discloses a fixed scroll and a scroll compressor with the same. The fixed scroll includes: an end plate; a fixed scroll wrap protruding from one surface of the end plate; and an internal cavity formed in the end plate. By adopting the fixed scroll and the scroll compressor with the fixed scroll according to the embodiment of the present disclosure, a weight of the scroll compressor may be reduced for example.

First claim

What is claimed is:

1. A fixed scroll for scroll compressor, the fixed scroll comprising:
an end plate;
a fixed scroll wrap protruding from one surface of the end plate;

a plurality of internal cavities formed in the end plate arranged around an axis of the end plate;
discharge holes formed in the end plate and communicating the plurality of internal cavities with an environment external to the fixed scroll, which are configured to discharge material from the plurality of internal cavities during a manufacturing process; and
a port formed in the end plate,
wherein the plurality of internal cavities comprise two first internal cavities adjacent to the port and a plurality of second internal cavities arranged between the two first internal cavities in a circumferential direction, and
wherein the discharge holes comprise:

first communication holes which are located between and communicate the first internal cavity and the second internal cavity adjacent to each other, and which are located between and communicate two adjacent second internal cavities, and a second communication hole which communicates the two first internal cavities with the port.

2. The fixed scroll for scroll compressor according to claim 1 , wherein:
at least one internal cavity of the plurality of internal cavities comprises two inner walls facing each other in an axial direction of the end plate and two inner walls facing each other in a radial direction of the end plate.

3. The fixed scroll for scroll compressor according to claim 2 , wherein:
the end plate comprises a lug boss provided in a center of the other surface of the end plate, and at least some or all of the plurality of internal cavities are formed in the lug boss.

4. The fixed scroll for scroll compressor according to claim 1 , wherein:
the port comprises at least one of a suction port and an injection port of the compressor, or one or more dedicated ports.

5. The fixed scroll for scroll compressor according to claim 4 , wherein:
the end plate comprises a lug boss provided in a center of the other surface of the end plate, and at least some or all of the internal cavities are formed in the lug boss.

6. The fixed scroll for scroll compressor according to claim 1 , wherein:
each discharge hole has a cross section in a form of circular, elliptical or polygonal.

7. The fixed scroll for scroll compressor according to claim 1 , wherein:
the end plate comprises:
a plurality of reinforcing ribs arranged at intervals in a circumferential direction of the end plate;
a plurality of first recess portions formed between the plurality of reinforcing ribs; and
a plurality of second recess portions respectively formed in the plurality of reinforcing ribs,
wherein the plurality of internal cavities are respectively opposed to the plurality of the reinforcing ribs in a radial direction of the end plate, and
the plurality of first recess portions are respectively opposed to a partition wall between two adjacent inner cavities in the radial direction of the end plate.

8. The fixed scroll for scroll compressor according to claim 1 , wherein:
the end plate comprises a lug boss provided in a center of the other surface of the end plate, and at least some or all of the internal cavities are formed in the lug boss.

9. The fixed scroll for scroll compressor according to claim 1 , wherein:
the fixed scroll is formed by 3D printing.

10. A scroll compressor, comprising:
the fixed scroll according to claim 1 .

11. The fixed scroll for scroll compressor according to claim 1 , wherein:
in a plane perpendicular to an axial direction of the end plate, each internal cavity of the plurality of internal cavities has a cross section in a form of circular, elliptical or polygonal.

Assignees

• Danfoss Tianjin Ltd

Inventors

• Lin Jiangbo
• Ji Xiaokun

Classifications

• F04C18/0253 Primary

  Details concerning the base · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title

• F04C18/0246

  Details concerning the involute wraps or their base, e.g. geometry · CPC title

• F04C18/0261

  Details of the ports, e.g. location, number, geometry · CPC title

• F04C2/025

  the moving and the stationary member having co-operating elements in spiral form · CPC title