Tip seal for scroll compressor
AssigneeNtn Corporation
InventorsTakuya Ishii, Daichi Ito, Katsushi Takeo, Satoru Fukuzawa
Life of this patent
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Abstract
A tip seal 1 for a scroll compressor capable of reducing a frictional force between scroll members and the tip seal where the tip seal 1 has a spiral shape for sealing a compression chamber formed between a fixed scroll and a movable scroll in a scroll compressor provided with the fixed scroll. The movable scroll having a plurality of concave parts 4 being formed by partially notching a sliding surface 5 on the scroll members, the concave parts 4 being arranged on at least one of a spiral inner peripheral surface 1b or a spiral outer peripheral surface 1a. Each of the concave parts 4 being open to the inner peripheral surface 1b or the outer peripheral surface 1a.
Claims7
A tip seal for a scroll compressor comprising:
- the tip seal having a spiral shape for seating a compression chamber formed between a fixed scroll and a movable scroll in the scroll compressor,
- said tip seat comprising a plurality of concave parts formed by partially notching a sliding surface of the tip seal to form a notched sliding surface, the notched sliding surface of the tip seal, the notched sliding surface of the tip seal engaging one of the sliding surfaces of the fixed scroll or the sliding surface of an orbiting scroll, wherein
- said concave parts are arranged on at least one of a spiral inner peripheral surface or a spiral outer peripheral surface, and
- each of said concave parts opens to the spiral inner peripheral surface or the spiral outer peripheral surface and penetrates through at least a portion of the inner peripheral surface or the outer peripheral surface, wherein
- a planar shape of the concave part is a circular arc shape, and
- circular arc radii of the concave parts, that are arranged from a winding-start end part of the spiral of said tin seal toward a winding-finish endpart of the spiral of said tip seal, are increased continuously or stepwise.
Dependencies are inferred from the claim text.