COMPRESSOR WITH DUAL CAPACITY

摘要

PURPOSE: A compressor with dual capacity is provided to improve efficiency by preventing increase of input of the compressor. CONSTITUTION: A compressor includes an eccentric part(21); an eccentric sleeve(30) and a relative rotation restrictive device. The eccentric part is placed on one end of a crank shaft and has a center(21a) eccentric with a rotating center(20a) of the crank shaft. The eccentric sleeve is a hollow cylinder joined to a periphery of the eccentric part so that a center thereof is eccentric with the center of the eccentric part. Only the eccentric part rotates or the eccentric sleeve rotates together with the eccentric part. The relative rotation restrictive device comprises a key member, systematically fixed on the eccentric part and the eccentric sleeve, and a track part, formed on either of the eccentric part or the eccentric sleeve to which one end of the key member is inserted, to restrict relative rotation of the eccentric part and the eccentric sleeve. The key member is a key(40) penetrating one side of the eccentric part and having an end mounted to the eccentric sleeve. The track part is a restrictive hole(32) formed on one side of the eccentric sleeve to have fixed angle range for the one end of the key is inserted to.