SCROLL COMPRESSOR
First Claim
1. A scroll compressor comprising:
- a casing;
a compression mechanism housed in the casing, the compression mechanism including a fixed scroll and an orbiting scroll;
a driving shaft housed in the casing, the drive shaft being engaged with the orbiting scroll;
a bearing oil supply passage configured to supply the lubricating oil from an oil reservoir located in the casing to a bearing location in the compression mechanism, the bearing location being disposed with the driving shaft; and
a groove communication passage,the compression mechanism being configured to discharge a compressed fluid into the casing and to generate a pressing force pressing the orbiting scroll against the fixed scroll,the orbiting scroll having an end plate with a thrust sliding surface and the fixed scroll having a thrust sliding surface, the thrust sliding surfaces of the fixed scroll and the orbiting scroll being in sliding contact with each other,one of the thrust sliding surfaces of the orbiting scroll and the fixed scroll includes an oil groove arranged such that a lubricating oil flows into the oil groove,the bearing oil supply passage not being in communication with he oil groove, andthe groove communication passage connecting the oil groove to the oil reservoir in the casing.
1 Assignment
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Accused Products
Abstract
A scroll compressor (10) includes a bearing oil supply passage (70) configured to supply a refrigeration oil from an oil reservoir (18) located in a casing (15) to a bearing of a driving shaft (60). An oil groove (80) which communicates only with the oil reservoir (18) in the casing (15) through a connection passage (86) and a capillary tube (87) is formed on a thrust sliding surface (35) of a fixed scroll (30). Since the bearing oil supply passage (70) is not in communication with the oil groove (80), even when an orbiting scroll (40) is tilted and a pressure of the oil groove (80) decreases, a pressure of the bearing oil supply passage (70) does not decrease, and accordingly, the refrigeration oil is supplied from the bearing oil supply passage (70) to the bearing of the driving shaft (60).
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Citations
20 Claims
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1. A scroll compressor comprising:
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a casing; a compression mechanism housed in the casing, the compression mechanism including a fixed scroll and an orbiting scroll; a driving shaft housed in the casing, the drive shaft being engaged with the orbiting scroll; a bearing oil supply passage configured to supply the lubricating oil from an oil reservoir located in the casing to a bearing location in the compression mechanism, the bearing location being disposed with the driving shaft; and a groove communication passage, the compression mechanism being configured to discharge a compressed fluid into the casing and to generate a pressing force pressing the orbiting scroll against the fixed scroll, the orbiting scroll having an end plate with a thrust sliding surface and the fixed scroll having a thrust sliding surface, the thrust sliding surfaces of the fixed scroll and the orbiting scroll being in sliding contact with each other, one of the thrust sliding surfaces of the orbiting scroll and the fixed scroll includes an oil groove arranged such that a lubricating oil flows into the oil groove, the bearing oil supply passage not being in communication with he oil groove, and the groove communication passage connecting the oil groove to the oil reservoir in the casing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification