Scroll assembly and scroll compressor

Patent metadata

Field	Value
Publication number	US-11746779-B2
Application number	US-202217899838-A
Country	US
Kind code	B2
Filing date	Aug 31, 2022
Priority date	Sep 2, 2021
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

A scroll assembly includes an orbiting scroll and a cross ring. The orbiting scroll is configured to have a bottom plate. A plurality of bayonets and two positioning slots are provided on the outer peripheral surface of the bottom plate. The bayonets are adapted to be clamped by a chuck of a turning tool. The cross ring is configured to have an annular body and two positioning pins. An annular groove adapted for being formed by turning is provided on the lower surface of the bottom plate of the orbiting scroll, and a chamfer is formed on the edge of the annular groove formed by the intersection of the circumferential vertical surface of the positioning groove and the lower surface of the bottom plate.

First claim

What is claimed is:

1. A scroll assembly adapted for a scroll compressor, comprising:
an orbiting scroll configured to have a bottom plate with an upper surface, a lower surface and an outer peripheral surface, and a scroll arranged on the upper surface of the bottom plate, and the outer peripheral surface of the bottom plate being provided with:
a plurality of bayonets adapted to be clamped by a chuck of a turning tool for turning the orbiting scroll by the turning tool; and
two positioning slots, each of which being generally “ ” shaped and the two positioning slots being arranged centrally symmetrically relative to a center of the orbiting scroll when viewed in the direction of a central axis of the orbiting scroll, wherein each of the positioning slots comprises two radial vertical surfaces, a circumferential vertical surface and an opening facing outwards in a radial direction of the orbiting scroll; and

a cross ring configured to have an annular body and two positioning pins provided on an upper surface of the annular body, the two positioning pins being centrally symmetrically arranged relative to a center of the cross ring, wherein in the state where the orbiting scroll is assembled to the cross ring, the lower surface of the bottom plate is slidably fitted on the upper surface of the annular body, each of the positioning pins is inserted into a corresponding positioning slot, and the positioning pins are slidable back and forth respectively relative to the corresponding positioning slots in the radial direction of the orbiting scroll, so that the orbiting scroll is slidable back and forth relative to the cross ring in the radial direction of the orbiting scroll,
wherein an annular groove adapted for being formed by turning is provided on the lower surface of the bottom plate of the orbiting scroll, and the annular groove is sized such that a chamfer is formed on an edge of the annular groove formed by the intersection of the circumferential vertical surface of the corresponding positioning slot and the lower surface of the bottom plate.

2. The scroll assembly according to claim 1 , wherein a diameter of the neutral circle of the annular groove is greater than a distance between the circumferential vertical surfaces of the two positioning slots in the radial direction of the orbiting scroll.

3. The scroll assembly according to claim 2 , wherein a cross-sectional profile of the annular groove is “Λ” shaped.

4. A scroll compressor, wherein the scroll compressor comprises the scroll assembly according to claim 2 .

5. The scroll assembly according to claim 1 , wherein a cross-sectional profile of the annular groove is “Λ” shaped.

6. A scroll compressor, wherein the scroll compressor comprises the scroll assembly according to claim 5 .

7. The scroll assembly according to claim 1 , wherein the chamfer is a 45° chamfer or a non-45° chamfer.

8. The scroll assembly according to claim 7 , wherein each of the two positioning pins is configured to have a vertical surface opposite to the circumferential vertical surface of the corresponding positioning slot, and an inner fillet is formed at the edge where the vertical surface of each of the two positioning pins intersects with the upper surface of the annular body.

9. The scroll assembly according to claim 8 , wherein a radius of the inner fillet is less than or equal to a length of the right-angled side of the chamfer.

10. A scroll compressor, wherein the scroll compressor comprises the scroll assembly according to claim 9 .

11. A scroll compressor, wherein the scroll compressor comprises the scroll assembly according to claim 8 .

12. A scroll compressor, wherein the scroll compressor comprises the scroll assembly according to claim 7 .

13. A scroll compressor, wherein the scroll compressor comprises the scroll assembly according to claim 1 .

Assignees

• Danfoss Tianjin Ltd

Inventors

• Yang Zhuangzhi
• Zhang Xiaoping
• Li Zhi

Classifications

• F04C2/04 Primary

  of internal axis type · CPC title

• F04C15/00

  Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00 (of pumps specially adapted for elastic fluids F04C18/00 - F04C29/00) · CPC title

• F04C18/0215 Primary

  where only one member is moving · CPC title

• F04C23/008

  Hermetic pumps · CPC title

• F04C2230/10

  by removing material · CPC title