| 摘要 |
A blower of the displacement type, comprising a stationary outer cylinder (10, 11) and an inner cylinder (32, 33, 34) eccentrically rotatably mounted in relation to the outer cylinder, a stationary shaft (14) arranged concentrically in the outer cylinder, and a number of vanes (39) which are individually rotatably mounted at one end thereof on the stationary shaft and have the other end thereof adjacent the inside surface of the outer cylinder and between the ends thereof are pivotally and displaceably mounted in the inner cylinder. Each vane at said other end thereof forms a flange (50) projecting at both sides of the vane and forming a seal against the inside surface of the outer cylinder. Moreover, the inner cylinder has axial partitions planes dividing the cylinder into sections. These sections extend between the vanes and the axial edge portions (37) thereof are angled towards the centre to form at adjacent axial edges thereof axial grooves (60) in the outside curved surface of the inner cylinder to receive the flanges therein. The invention also relates to a method in manufacturing the inner cylinder. |
