3 - Technologies

The rotor consists of a disc (1), two concentric shoulders (4 and 8) arranged on both sides of the disc and two fixed blades (3 and 7) arranged on diametrically opposed sides of the disc, each one against the face of the disc and joined at the edge of the shoulders to obtain a balanced rotation unit. The rotor, machined from a single part or made from assembled components, is joined to a shaft supported by bearings and housed in a cylindrical chamber (2) arranged in a stator (item 9, Figure 2).

The stops (5 and 6) are housed in the stator. They are mobile and activated by mechanical, hydraulic, compressed-air or electrical means or by a combination of said means arranged at a distance from the cylindrical chamber so that the work volume is free from any form of lubrication and is able to operate dry and at high temperatures. This permits uninterrupted rotation of the rotor, the stops being positioned very close to the aforementioned shoulders during the work phase, in order to generate volume variations between the blades and the stops and the stops are retracted into the stator to allow the blades to pass from one side to the other.

In combination, the dimensions of the rotor faces associated with the stator faces, the dimensions of the stop faces associated with the rotor and stator faces, the play between the rotor faces and the associated stator faces, the play between the stop faces and the associated rotor and stator faces, and the arithmetic roughness of all the associated surfaces are defined so that they generate turbulences in said clearance in order to create a seal by controlled charge losses and generate neither friction nor the need for lubrication at these locations.