DE2616687A1 - Rotary piston unit with housing seals at 180 degrees - has rotor with seal strips radially moved by cam track and centrifugally compensated - Google Patents

Abstract

The rotary piston pump, compressor or engine has a housing containing two sealing elements arranged 180 deg. apart and in contact with the rotor. The rotor has a number of radial slots in which sealing strips are radially movable, three strips being provided if the unit is used as engine, and four for a pump or compressor. The strips are radially actiated by rollers engaging a curved cam track and centrifugal weights are provided which are so that they exactly compensate the centrifugal forces acting on the strips. Inlet and outlet ports are so arranged relative to the elements that the strips only move radially in the neutral pressure zones, where they are not exposed to differential pressure.

Description

Circular chamber pump (compressor, motor)

(Circular chamber unit) Sketches: Fig. I Axial section - top view Fig.II Radial section of the housing of the rotor (pump) in principle Fig. III Axial-radial section view Vane piston and piston carrier Fig. IV Principle engine Fig. V Two-part rotor The mode of operation is simple: @@ r 1800 are offset in a rin-shaped housing (1) two shoes (1a) attached, in the inner radius of which the runner (chamber floor) is (2) rotates. To avoid edge sealing, the housing and runner are designed to be round.

For assembly reasons, the runner is in two parts.

The rotor has three (motor) or four (pump / compressor) slots (2a), in which the vane pistons (3) are arranged to be radially displaceable.

The radial movement of the vane pistons (3) is controlled by means of the roller bolt (3a) through the link (6a). Inlet and outlet are via the Slots (1b) or (lc) in the housing ring.

The centrifugal force of the wing pistons is correspondingly negatively acting Flyweights (5) are precisely compensated so that there is no line pressure on the backdrop and sliding rollers arises.

The wing pistons (3) are only radial in the area of the shoes (1a) moved (backdrop).

Through the formation of the slots (lb) and (lc) or through their arrangement it is achieved that the coarse (3) only in the pressure-neutral space (no differential pressure on the vane pistons) must be moved radially.

This formation of the chambers causes the radial pressure on the Chamber bottom (runner) is balanced over 36o and that the engine in every bel. Position of the rotor, the full torque is available.

L e r s e i t e

Claims (1)

Claims: characterized in that shoes offset by @ur 1800 2 chambers are formed in the housing ring that the rotor (chamber bottom) is rotating, So it is not involved in the torque transmission that the runner (2 parts) with three or four slots are provided in which the vane pistons move radially can that the vane piston via the vane piston carrier the torque directly to the shaft or vice versa, that by choosing the number of vane pistons three or four a pulsation-free delivery on the other hand a constant torque is achieved that through the formation of the housing, rotor and wing piston with round edges simple seals can be used that by the arrangement the mus and inlet slots in the housing or grooves is achieved that the vane piston only have to be shifted radially in the pressure-neutral space that the pillow control the vane piston is made possible (line pressure) that the centrifugal force the wing is exactly compensated by negatively acting flyweights that by the basic concept causes radial or axial dimensions with the same performance conditions can be adapted extremely well to the operational requirements.