Aspera S.r.l.

Aspera A.p.a.

Marek Zgliczynski

Federigo Peruzzi

Giancarlo Sesona

A method for and an apparatus for assembly of rotating ring rotary compressors is disclosed. A cylinder, shaft, roller and supports are initially assembled together, fixing means being kept in a slackened position. A preliminary centering operation is then carried out for bringing the axis of the shaft into a diametral plane of the cylinder constituting a predetermined reference plane. This operation is carried out by orientation of the shaft into two angular positions spaced from each other by 180.degree.. The shaft is then oriented relative to the cylinder, the region of maximum eccentricity of the core being brought into the said reference plane. The support and the cylinder (this latter with the interposition of the roller) are then pressed onto the shaft by a thrust exerted in the said predetermined plane. They are thus brought into and held in a position of firm mutual contact: the cylinder on the roller, the roller on the eccentric core of the shaft and the support on the shaft at the sides of the eccentric core. The shaft and the support being kept in the position of firm contact, the cylinder is then given a relative movement of a predetermined magnitude in the opposite direction from the direction of the force previously exerted. The magnitude of this movement identifies the minimum aperture which is established, in use, between the outer surface of the roller and the wall of the compression chamber.

Method and apparatus for the assembly of rotary compressors particularly

The motor compressor comprises a hermetic casing in which are mounted a reciprocating compressor and a reversible electric motor having a common vertical shaft with an axial duct for conveying lubricating oil from a centrifugal pump located at the lower end of the shaft to an outlet located at its upper end. The outlet of the axial duct is constituted by an elbow tube which is fixed to the upper end of the shaft and has an inclined end portion extending upwardly and radially outwardly with respect to the axis of the shaft.

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Turin, Italy

Marek Zgliczynski