Hella Kgaa Hueck and Company

Dennis Marburg

Ingo Geue

Theodor Hüser

Udo Schubert

Thomas Valeiras

A vane pump with a pump housing in which a cam ring is constructed or arranged, and wherein a rotor is provided that is mounted in the cam ring so that it can rotate about a rotational axis , wherein the cam ring has an inner contour with a variable radius that varies between a maximum radius and a minimum radius in the circumferential direction about the rotational axis , wherein, in the radial gap between the inner contour and the rotor , a number of lift sections is constructed with pump chambers constructed in these sections, and wherein vane elements are mounted on the rotor , wherein these elements slide against the inner contour of the cam ring and limit the pump chambers in the circumferential direction. According to the invention, the radius of the inner contour varies about the rotational axis according to the function: r=r+a&#xb7;sin(n&#xb7;&#x3c6;), where r=(r+r)/2, a =(r&#x2212;r)/2, and &#x3c6;=phase angle of the radius (r) between (r) and (r) in the direction of rotation of the rotor .

Growing community of inventors

Lippstadt, Germany

Dennis Marburg