Scroll compressor having a scroll supporter and/or movement limiter

Patent metadata

Field	Value
Publication number	US-9353745-B2
Application number	US-201313949380-A
Country	US
Kind code	B2
Filing date	Jul 24, 2013
Priority date	Mar 18, 2013
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

A scroll compressor having a scroll supporter and/or movement limiter is provided. The scroll compressor may include a casing, a main frame fixedly installed within the casing, a first scroll rotatably supported by the main frame, a second scroll supported by the main frame, such that the second scroll is movable in a vertical direction with respect to the first scroll, a guide that guides movement of the second scroll in the vertical direction, while preventing the second scroll from being rotated in an axial direction; and a movement limiter disposed on an inner wall of the casing and separated from the second scroll, the movement limiter being configured to limit a movement distance of the second scroll in an upward direction.

First claim

What is claimed is:

1. A scroll compressor, comprising:
a casing;
a main frame fixedly installed within the casing;
a first scroll rotatably supported by the main frame;
a second scroll supported by the main frame, such that the second scroll is movable in a vertical direction with respect to the first scroll;
a rotation preventer that prevents rotation of the second scroll in an axial direction;
a guide that guides movement of the second scroll in a vertical direction; and
a movement limiter provided on an inner wall of the casing separated from the second scroll, the movement limiter being configured to limit a movement distance of the second scroll in an upward direction, wherein the main frame includes at least one protrusion, that protrudes toward the second scroll in a vertical direction, and wherein the guide includes:
a first guide surface formed on an inner side of the at least one protrusion; and
a second guide surface formed on a lateral surface of the second scroll and provided to be in contact with the first guide surface.

2. The scroll compressor of claim 1 , wherein the guide is not fixed to the first scroll.

3. The scroll compressor of claim 1 , further including a discharge cover provided within the casing above the second scroll, the discharge cover dividing an interior of the casing into a suction space and a discharge space, wherein the movement limiter extends along an inner wall surface of the casing from a lower surface of the discharge cover.

4. The scroll compressor of claim 1 , wherein the movement limiter has an annular shape and is fixed to an inner wall surface of the casing.

5. The scroll compressor of claim 1 , wherein the movement limiter protrudes from the inner wall surface of the casing.

6. The scroll compressor of claim 1 , wherein the rotation preventer includes a guide pin inserted through the main frame and the second scroll.

7. The scroll compressor of claim 6 , wherein a lower end of the guide pin is inserted into a pin fixing hole provided in the at least one protrusion, and an upper end of the guide pin is in contact with the movement limiter in the vertical direction.

8. The scroll compressor of claim 1 , wherein the rotation preventer includes:
a key recess formed in the at least one protrusion; and
a key formed in the second scroll and inserted into the key recess, wherein the key is movable in the vertical direction.

9. A scroll compressor, comprising:
a casing;
a main frame fixedly installed within the casing, including at least one protrusion that protrudes in an axial direction;
a first scroll rotatably supported by the main frame;
a second scroll supported by the main frame, such that the second scroll is movable in a vertical direction with respect to the first scroll, wherein the second scroll includes a pin insertion portion installed at an upper portion of the at least one protrusion;
a guide pin inserted through the at least one protrusion of the main frame and the pin insertion portion of the second scroll that prevents the second scroll from being rotated in an axial direction;
a movement limiter provided on an inner wall of the casing and not attached to the second scroll, the movement limiter being configured to limit a movement distance of the second scroll in an upward direction;
a first guide surface formed on an inner side of the at least one protrusion; and
a second guide surface formed on a lateral surface of pin insertion portion and provided to be in contact with the first guide surface.

10. The scroll compressor of claim 9 , wherein the pin insertion portion is not fixed to the first scroll.

11. The scroll compressor of claim 9 , further including a discharge cover provided within the casing above the second scroll, the discharge cover dividing an interior of the casing into a suction space and a discharge space, wherein the movement limiter extends along an inner wall surface of the casing from a lower surface of the discharge cover.

12. The scroll compressor of claim 9 , wherein the movement limiter has an annular shape and is fixed to an inner wall surface of the casing.

13. The scroll compressor of claim 9 , wherein the movement limiter protrudes from the inner wall surface of the casing.

14. The scroll compressor of claim 9 , wherein the guide pin is inserted into a pin hole formed on the pin insertion portion.

15. The scroll compressor of claim 14 , wherein the pin insertion portion extends in a radial direction from a lateral surface of the second scroll.

16. The scroll compressor of claim 15 , wherein the second scroll moves upwardly until the pin insertion portion comes into contact with a lower end of the movement limiter.

17. The scroll compressor of claim 16 , wherein the movement limiter is disposed to be in contact with an upper portion of the guide pin.

18. The scroll compressor of claim 9 , wherein a lower end of the guide pin is inserted into a pin fixing hole provided in the at least one protrusion, and an upper end of the guide pin is in contact with the movement limiter in a vertical direction.

Assignees

• Lg Electronics Inc

Inventors

• Lee Munyoung
• Jang Sihyun
• Jin Honggyun

Classifications

• F04C27/005

  Axial sealings for working fluid · CPC title

• F04C18/0207 Primary

  both members having co-operating elements in spiral form · CPC title

• F04C18/0215 Primary

  where only one member is moving · CPC title

• F04C23/008

  Hermetic pumps · CPC title

• F04C14/28

  Safety arrangements; Monitoring · CPC title