Scroll-type fluid transferring machine with gap adjustment between scroll members

摘要

A scroll-type fluid transferring machine has stationary and oscillatable scroll members, each being provided with a base plate and a wrap plate projecting from a surface of the base plate, which are combined in such a manner that a plurality of compression chambers are formed by the surfaces of the base plates and wrap plates and a fluid contained in the chambers is transferred, compressed or expanded by the revolution of the oscillatable scroll member. The scroll-type fluid transferring machine comprises a first fine adjustment element having the same spiral form as the wrap plate of the stationary scroll member; a second fine adjustment element having the same spiral form as the wrap plate of the oscillatable scroll member; a first guide groove having the same spiral form as the first fine adjustment element and being formed in the top end surface of the wrap plate of the stationary scroll member; a second guide groove having the same spiral form as the second fine adjustment element and being formed in the top end surface of the wrap plate of the oscillatable scroll member, wherein the first and second fine adjustment elements are respectively received in the first and second guide grooves so that gaps between the end surface of the wrap plates and the surface of the base plates facing the wrap plates are finely adjusted.