Scroll compressor with different sized gaps formed between inner and outer peripheral surfaces of scroll laps

Patent metadata

Field	Value
Publication number	US-10920775-B2
Application number	US-201816487060-A
Country	US
Kind code	B2
Filing date	Jun 7, 2018
Priority date	Jun 14, 2017
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

A scroll compressor includes a fixed scroll including a fixed scroll lap, and a movable scroll including a movable scroll lap. A first scroll lap is one of the fixed scroll lap and the movable scroll lap. A second scroll lap is an other of the fixed scroll lap and the movable scroll lap. A second thickness of the second scroll lap is larger than a first thickness of the first scroll lap. A first side face gap is formed between an inner line of the first scroll lap and an outer line of the second scroll lap. A second side face gap is formed between an outer line of the first scroll lap and an inner line of the second scroll lap. The second side face gap is larger than the first side face gap.

First claim

What is claimed is:

1. A scroll compressor comprising:
a fixed scroll including a fixed scroll lap; and
a movable scroll including a movable scroll lap,
the fixed and movable laps of the fixed and movable scrolls meshing with each other to form a compression chamber therebetween, and the movable scroll revolving in order to compress a fluid in the compressions chamber,
a first scroll lap being one of the fixed scroll lap and the movable scroll lap, a second scroll lap being an other of the fixed scroll lap and the movable scroll lap, and a second thickness of the second scroll lap being larger than a first thickness of the first scroll lap,
the second scroll lap including an inner peripheral side lap part and an outer peripheral side lap part,
the first scroll lap including a reciprocation lap part arranged to relatively reciprocate between the inner peripheral side lap part and the outer peripheral side lap part,
a first side face gap being formed between an inner peripheral surface of the first scroll lap and an outer peripheral surface of the second scroll lap in a state in which the reciprocation lap part of the first scroll lap is closest to the inner peripheral side lap part of the second scroll lap, the first side face gap being measured at a location where the reciprocation lap part of the first scroll lap is closest to the inner peripheral side lap part of the second scroll lap,
a second side face gap being formed between an outer peripheral surface of the first scroll lap and an inner peripheral surface of the second scroll lap in a state in which the reciprocation lap part of the first scroll lap is closest to the outer peripheral side lap part of the second scroll lap, the second side face gap being measured at a location where the reciprocation lap part of the first scroll lap is closest to the outer peripheral side lap part of the second scroll lap,
the outer peripheral surface of the first scroll lap being disposed radially outward of the inner peripheral surface of the first scroll lap relative to a shaft rotation axis, and the outer peripheral surface of the second scroll lap being disposed radially outward of the inner peripheral surface of the second scroll lap relative to the shaft rotation axis, and
the second side face gap being larger than the first side face gap.

2. The scroll compressor according to claim 1 , wherein
the second thickness is equal to or larger than 130% of the first thickness.

3. The scroll compressor according to claim 2 , wherein
the second side face gap is equal to or larger than 110% of the first side face gap.

4. The scroll compressor according to claim 3 , wherein
the second side face gap is equal to or larger than 120% of the first side face gap.

5. The scroll compressor according to claim 2 , wherein
a height of the first scroll lap is equal to or larger than seven times the first thickness.

6. The scroll compressor according to claim 2 , wherein
the first thickness is a thickness of the reciprocation lap part, and
the second thickness is a thickness of the outer peripheral side lap part.

7. The scroll compressor according to claim 2 , wherein
the first scroll lap is the movable scroll lap, and
the second scroll lap is the fixed scroll lap.

8. The scroll compressor according to claim 1 , wherein
the second side face gap is equal to or larger than 110% of the first side face gap.

9. The scroll compressor according to claim 8 , wherein
the second side face gap is equal to or larger than 120% of the first side face gap.

10. The scroll compressor according to claim 8 , wherein
a height of the first scroll lap is equal to or larger than seven times the first thickness.

11. The scroll compressor according to claim 8 , wherein
the first thickness is a thickness of the reciprocation lap part, and
the second thickness is a thickness of the outer peripheral side lap part.

12. The scroll compressor according to claim 8 , wherein
the first scroll lap is the movable scroll lap, and
the second scroll lap is the fixed scroll lap.

13. The scroll compressor according to claim 1 , wherein
a height of the first scroll lap is equal to or larger than seven times the first thickness.

14. The scroll compressor according to claim 13 , wherein
the first thickness is a thickness of the reciprocation lap part, and
the second thickness is a thickness of the outer peripheral side lap part.

15. The scroll compressor according to claim 13 , wherein
the first scroll lap is the movable scroll lap, and
the second scroll lap is the fixed scroll lap.

16. The scroll compressor according to claim 1 , wherein
the first thickness is a thickness of the reciprocation lap part, and
the second thickness is a thickness of the outer peripheral side lap part.

17. The scroll compressor according to claim 16 , wherein
the first scroll lap is the movable scroll lap, and
the second scroll lap is the fixed scroll lap.

18. The scroll compressor according to claim 1 , wherein
the first scroll lap is the movable scroll lap, and
the second scroll lap is the fixed scroll lap.

Assignees

• Daikin Ind Ltd

Inventors

• Nakai Ryouta
• Murakami Yasuhiro
• Mizushima Yasuo

Classifications

• F04C18/0215 Primary

  where only one member is moving · CPC title

• F04C29/04

  Heating; Cooling (of machines or engines in general F01P); Heat insulation (heat insulation in general F16L59/00) · CPC title

• F04C2230/602

  Gap; Clearance · CPC title

• F04C18/02

  of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents · CPC title

• F04C18/0276

  Different wall heights · CPC title