SU1368502A1 - Axial fan inlet device - Google Patents

Abstract

The invention makes it possible to increase the productivity of the fan. The guide element is made in the form of a partition into, one end 7 of which is located at the level of the root part 8 of the blades 9, bent in the direction of its rotation and facing the convex surface 10 to the radial window 4, the other end 11 is in contact with the shell 5 from the latter. With this design, a part of the air entrained by the blades forms a circulating flow, which coincides with the direction of rotation of the impeller, and, striking the partition, flows into the root part of the blades 2 Il.

Description

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Claims (1)

Claim An axial fan inlet device, comprising an inlet pipe installed in front of the impeller, having two parallel rotor planes of rotation of the impeller, end walls connected to them to form a radial inlet window and a guide element located between the end walls, characterized in that, with In order to increase fan performance, the guide element is made in the form of a partition, one end of which is located at the level of the root part of the impeller blades, zognut in the rotating direction thereof and a convex surface facing to the radial window, and the other - is contacted with obe3Q gull by the latter.