03-08-2017 дата публикации
Номер: US20170218955A1
Принадлежит:
A rotary compressor includes a cylinder having a cylinder chamber and bush groove, a piston housed in the cylinder chamber, a blade formed with the piston to separate the cylinder chamber into low and high pressure chambers, and a pair of bushes. The bushes are fitted in the bush groove with flat surfaces facing each other to hold the blade. The flat surface of at least the bush on the low-pressure side has a crowned portion starting from a position closer to the back pressure space than a swing center position, and extending toward an edge of the bush closer to the cylinder chamber. The swing center position is where a gap between the blade and the bush is constant while the piston rotates eccentrically. 21. The rotary compressor of claim , wherein {'br': None, '0.2≦α'}, 'a parameter α, which is a ratio of L′ to L, satisfies'}where L represents a length of the flat surface of the bush before being subjected to the crowning process, and L′ represents a length between the edge of the at least one bush closer to the cylinder chamber and the crowning start position.31. The rotary compressor of claim , wherein {'br': None, 'α<0.5'}, 'a parameter α, which is a ratio of L′ to L, satisfies'}where L represents a length of the flat surface of the bush before being subjected to the crowning process, and L′ represents a length between the edge of the at least one bush closer to the cylinder chamber and the crowning start position.{'b': '4', 'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, '. The rotary compressor of , wherein'}a shift length x , which is a distance from the flat surface of the bush {'br': None, 'i': 'x≦α·C'}, 'to a crowning end position, satisfies'}where C represents a total length of gaps between the flat surfaces of the pair of bushes and the blade and gaps between the curved surfaces of the pair of bushes and the bush groove.51. The rotary compressor of claim , whereinthe crowned portion is in a form of an arc in contact with the blade at the crowning start ...
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