Sliding vane machine
OwnerTorsten Alundinventor
Life of this patent
Estimating the term…
Abstract
In a sliding vane machine a work can be accomplished by a pressure fluid rotating a rotor provided with a plurality of sliding vanes, which function as turbine blades, whereby the work is taken out as a rotational motion at the rotor shaft. If the machine is designed as a pump the shaft is rotated and the vanes act as impeller blades. In both cases it is desirous if the machine can adapt its work in response to varying loads. In accordance with the invention this is achieved by providing the machine with pressure plates controlling the effective working area of said vanes, the pressure plates thereby being adjusted by a fluid pressure which by means of a pressure actuated valve can be varied the pressure-actuated valve itself being controlled by the fluid pressure in a conduit supplying the pressure fluid to the machine.
Claims4
A sliding vane machine comprising in combination a housing, a rotor being rotatable therein, a plurality of axial grooves spaced evenly along the circumference of said rotor, each one of said grooves supporting two vanes, which vanes are axially displaceable in said groove, between a first position in which they are entirely contained inside said groove, to a second position in which each separate vane projects axially from the rotor, a number of radially extending partition walls fixed in the housing and dividing the interior thereof into a plurality of pressure chambers, guide means in the housing adapted to bring said vanes to said first position when a groove, during the rotational movement of the rotor, passes one and each of said partition walls, a fluid inlet in each one of said pressure chambers, a fluid supply line common for all fluid inlets, a fluid outlet in each one of said pressure chambers, a fluid discharge conduit common for all fluid outlets, a pressure plate arranged axially displaceable at each axial side of said rotor and in engagement with the ends of the said vanes projecting from the said groove when the vanes are in their said second position, a number of slots arranged in said pressure plates for said partition walls, the axial position of said pressure plates being adjustable following pressure variations in a fluid-containing first space between the pressure plate surface remote from the said vanes and the adjacent end wall of the housing, and a pressure-actuated sliding valve body, slidingly arranged in a valve housing provided with a first conduit between the interior of the valve housing and said fluid-containing first space, a second conduit between the interior of the valve housing and a second low pressure space and a third conduit between the interior of the valve housing and a third, high pressure space connected to said supply line, said sliding valve body being displaceable in said valve housing to alternatively connect the said first conduit with either one of said second and said third conduits, for controlling fluid pressure in said first space.
Dependencies are inferred from the claim text.