Publication

Rotary piston machine

2001
Patents

Abstract

A rotary piston machine having a housing (1) provided with a cavity (2) comprising a rotor (6', 6) rotating around a first axis and a compression plate (16) dividing said cavity into separate volumes, the machine further being provided with at least one inlet port and one outlet port. Said cavity (2) is provided with a spherical wall portion (3) and is closed by means of a top cover (13). The rotor is provided with a conical part (6) reaching into said cavity (2) which conical part is provided with a slot (15) through the virtual tip of the cone perpendicular to the base of the same. The compression plate (16) is provided with a circular edge portion having essentially the same radius as the spherical wall portion (3) of said cavity and is arranged sliding in a pivoting movement in said slot (15). The plate (16) has further a straight edge portion (22) arranged at the level of the virtual tip of the cone and is arranged for rotation in said cavity in a plane parallel to the top cover (13) which compression plate during operation is thus rotating at the same speed as the cone around said first axis while simultaneously pivoting around a second axis perpendicular to said first axis.

Official source

https://infoscience.epfl.ch/entities/publication/3a76dfe0-efb1-4aa7-a6e1-6d9edb9f8202

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2001
Patents

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/3a76dfe0-efb1-4aa7-a6e1-6d9edb9f8202

About this result

Related concepts (32)

Rotation

Rotation or rotational motion is the circular movement of an object around a central line, known as axis of rotation. A plane figure can rotate in either a clockwise or counterclockwise sense around a perpendicular axis intersecting anywhere inside or outside the figure at a center of rotation. A solid figure has an infinite number of possible axes and angles of rotation, including chaotic rotation (between arbitrary orientations), in contrast to rotation around a axis.

Cone

A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. A cone is formed by a set of line segments, half-lines, or lines connecting a common point, the apex, to all of the points on a base that is in a plane that does not contain the apex. Depending on the author, the base may be restricted to be a circle, any one-dimensional quadratic form in the plane, any closed one-dimensional figure, or any of the above plus all the enclosed points.

Screw axis

A screw axis (helical axis or twist axis) is a line that is simultaneously the axis of rotation and the line along which translation of a body occurs. Chasles' theorem shows that each Euclidean displacement in three-dimensional space has a screw axis, and the displacement can be decomposed into a rotation about and a slide along this screw axis. Plücker coordinates are used to locate a screw axis in space, and consist of a pair of three-dimensional vectors. The first vector identifies the direction of the axis, and the second locates its position.

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Rotary piston machine

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