Stepped-disc pump
OwnerDietrich Denschinventor
Life of this patent
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Abstract
The invention relates to a stepped-disc pump with at least two mutually engaging rotors rotating at the same speed in opposite directions and constructed from stepped discs arranged in a row on a shaft and each having only one engagement segment, adjacent stepped discs being in each case mutually offset by a defined angle and being constructed and arranged in such a way that, together with the casing, they form closed delivery chambers. The characteristic feature of the invention is that the offset angle .alpha. is equal to the angle .beta. which is obtained by connecting the points of intersection (5.sub.1, 5.sub.2) of the envelope circles of the rotors (2, 3) to the centers (M.sub.1, M.sub.2) thereof, and that the offset angle .alpha. is equal to 360.degree./n, n being an integer greater than 3.
Claims2
A stepped disc pump comprising a casing, at least two mutually engaging rotors, each of which is mounted on a shaft, means for rotating said rotors at the same speed in opposite directions, each of said rotors having stepped discs arranged in a row on the shaft and each having only one engagement segment, adjacent stepped discs being in each case mutually offset by a defined angle and being constructed and arranged in such a way that, together with with said casing, they form closed delivery chambers, the offset angle .alpha. is equal to the angle .beta. which is obtained by connecting the points of intersection (5.sub.1,5.sub.2) of the envelope circles of said rotors (2,3) to the centers (M.sub.1,M.sub.2) thereof, and that the offset angle .alpha. is equal to 360.degree./n, n being an integer greater than three.
Dependencies are inferred from the claim text.