Rotorspinnkammer fuer eine Offen-End-Spinnvorrichtung

A rotary spinning chamber for an open-end spinning machine. The chamber has a bottom wall secured to a shaft for rotatably driving the spinning chamber, the bottom wall extending substantially perpendicularly to the shaft. A collecting surface is formed adjacent to and surrounding the outer periphery of the inner surface of the bottom wall for collecting fibers fed into the spinning chamber through a fiber feeding conduit. A plurality of air exhaust channels is provided for exhausting the air inside the spinning chamber for reducing the air pressure inside the spinning chamber to create an air flow through the fiber feeding conduit toward the interior of the spinning chamber. The inner surface of the bottom wall gradually bulges in the axial direction of the shaft toward the interior of the spinning chamber as the center of the inner surface is approached, and each of said exhaust channels has the air inlet opening thereof located in the inner surface and the air outlet opening thereof located in an outer peripheral surface of the spinning chamber at a position located radially outwardly of the air inlet opening.