Scroll compressor with improved scroll curves

Patent metadata

Field	Value
Publication number	US-10962006-B2
Application number	US-201816013104-A
Country	US
Kind code	B2
Filing date	Jun 20, 2018
Priority date	Sep 1, 2017
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

A scroll compressor includes a fixed scroll including a fixed mirror-like surface and a fixed wrap that is extended from the fixed mirror-like surface, formed in a hybrid curve, and includes a thick portion thicker than other portions; an orbiting scroll including an orbiting mirror-like surface and an orbiting wrap extended from the orbiting mirror-like surface and formed in a hybrid curve; and a rotating shaft configured to rotate the orbiting scroll, wherein the orbiting scroll revolves relative to the fixed scroll. A center of a curve of a center portion of the fixed wrap is located at a position offset by a predetermined distance in a direction of reducing a thickness of the thick portion of the fixed wrap from a center of the fixed mirror-like surface, and a center of a curve of a center portion of the orbiting wrap is offset to correspond to the fixed wrap.

First claim

What is claimed is:

1. A scroll compressor comprising:
a fixed scroll including a fixed mirror-like surface and a fixed wrap that is extended from the fixed mirror-like surface, is formed in a first hybrid curve, and includes a center portion, a thick portion extending radially outward from the center portion and a suction portion extending radially outward from the thick portion, the thick portion being that is thicker than the center and suction portions, a thickness of the thick portion depending on a center of a curve of the center portion;
an orbiting scroll including an orbiting mirror-like surface and an orbiting wrap that is extended from the orbiting mirror-like surface and is formed in a second hybrid curve; and
a rotating shaft configured to rotate the orbiting scroll, wherein the orbiting scroll revolves relative to the fixed scroll,
wherein the center of the curve of the center portion of the fixed wrap is located at a position that is radially offset from a center of the fixed mirror-like surface by a predetermined distance in a direction of reducing the thickness of the thick portion of the fixed wrap while still maintaining the thick portion of the fixed wrap to be thicker than the center and suction portions of the fixed wrap,
wherein a center of a curve of a center portion of the orbiting wrap is offset to correspond to the fixed wrap, and
wherein the center of the curve of the center portion of the fixed wrap is radially offset from the center of the fixed mirror-like surface by ½ or less of an eccentric distance between a center line of the rotating shaft and a center of the orbiting mirror-like surface of the orbiting scroll.

2. The scroll compressor of claim 1 , wherein
the center of the curve of the center portion of the fixed wrap is located at a position that is offset from the center of the fixed mirror-like surface in a direction in which the thickness of the thick portion of the fixed wrap is reduced and the thickness of a suction portion of the fixed wrap is increased.

3. The scroll compressor of claim 1 , wherein
each of the first hybrid curve and the second hybrid curve comprises an involute curve, at least one multidimensional curve, and at least one arc connected sequentially outward from the center portion.

4. The scroll compressor of claim 1 , wherein
each of the first hybrid curve and the second hybrid curve comprises a logarithmic spiral curve, at least one multidimensional curve, and at least one arc connected sequentially outward from the center portion.

5. The scroll compressor of claim 1 , wherein
each of the first hybrid curve and the second hybrid curve comprises at least one multidimensional curve and at least one arc connected sequentially outward from the center portion.

6. The scroll compressor of claim 1 , wherein
each of the first hybrid curve and second hybrid curve is formed by combining a plurality of multidimensional curves.

7. The scroll compressor of claim 1 , wherein
each of the first hybrid curve and second hybrid curve is formed by combining a plurality of arcs.

8. The scroll compressor of claim 1 , wherein
the center of the curve of the center portion of the fixed wrap is located at a position that is offset from the center of the fixed mirror-like surface in a direction in which the thickness of the thick portion of the fixed wrap is reduced and the thickness of the center portion of the fixed wrap is increased.

9. A scroll compressor comprising:
a first scroll including a fixed mirror-like surface and a first wrap extended from the fixed mirror-like surface;
a second scroll including an orbiting mirror-like surface and a second wrap extended from the orbiting mirror-like surface; and
a rotating shaft configured to cause the second scroll to revolve relative to the first scroll,
wherein the first wrap is formed of an inner curve and an outer curve which are hybrid curves and includes a center portion, a middle portion radially outward from the center portion and a suction portion radially outward from the middle portion, the middle portion being thicker than the suction portion, each of the center portion, the middle portion and the suction portion being formed from respective sections of the inner curve and the outer curve, the section of the inner curve forming the center portion being positioned together with the section of the inner curve forming the middle portion,
wherein a center of the section of the inner curve forming the center portion of the first wrap is radially offset by a predetermined distance from a center of the fixed mirror-like surface so that the section of the inner curve forming the middle portion of the first wrap is offset toward the section of the outer curve forming the middle portion,
wherein the second wrap includes an inner curve and an outer curve which are hybrid curves, and is formed to correspond to the inner curve of the first wrap, and
wherein the center of the section of the inner curve forming the center portion of the first wrap is radially offset from the center of the fixed mirror-like surface by ½ or less of an eccentric distance between a center line of the rotating shaft and a center of the orbiting mirror-like surface of the orbiting scroll.

10. The scroll compressor of claim 9 , wherein
the center of the section of the inner curve forming the center portion of the first wrap is located at a position that is offset from the center of the fixed mirror-like surface in a direction in which a thickness of the middle portion of the first wrap is reduced and a thickness of a suction portion of the first wrap is increased, while still maintaining the middle portion of the first wrap to be thicker than the suction portion of the first wrap.

11. The scroll compressor of claim 9 , wherein
the hybrid curve forming each of the inner curve of the first wrap and the outer curve of the second wrap comprises an involute curve, at least one multidimensional curve, and at least one arc connected sequentially outward from the center portion.

12. The scroll compressor of claim 9 , wherein
the hybrid curve forming each of the inner curve of the first wrap and the outer curve of the second wrap comprises a logarithmic spiral curve, at least one multidimensional curve, and at least one arc connected sequentially outward from the center portion.

13. The scroll compressor of claim 9 , wherein
the center of the section of the inner curve forming the center portion of the first wrap is located at a position that is offset from the center of the fixed mirror-like surface in a direction in which a thickness of the middle portion of the first wrap is reduced and a thickness of the center portion of the first wrap is increased, while still maintaining the middle portion of the first wrap to be thicker than the suction portion of the first wrap.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Eun-Suk
• Kim Byung-Gu
• Kim Do-Hyun
• Kim Yang-Sun

Classifications

• F04C18/0269 Primary

  Details concerning the involute wraps · CPC title

• F04C18/0215 Primary

  where only one member is moving · CPC title

• F04C28/22

  by changing the eccentricity between cooperating members · CPC title

• F04C2250/20

  of the rotor · CPC title