Axial fan and a method of manufacturing a blower pipe therefor

摘要

An axial fan comprising a circular-cylindrical blower pipe configured about a center axis and comprising one or more plates that are bent and subsequently joined at opposing plate rims for forming the circular-cylindrical blower pipe; and wherein the circular-cylindrical blower pipe has two opposing ends; wherein the blower pipe is, at both its ends, bent outwards at right angles to the outside of the blower pipe for forming a mounting flange. The blower pipe comprises a rust-resistant metal plate or a steel plate which is coated with a rust-resistant material at least on the outside and the inside of the blower pipe; and in that the plate rims are joined in a rim-by-rim manner, without overlap, by soldering or welding with a rust-resistant filler material.

主权项

1. An axial fan comprising:
a circular-cylindrical blower pipe configured about a center axis and having an inner side and an outer side, wherein:
the blower pipe is configured with a fan rotor,the fan rotor has a rotor shaft that coincides with the center axis of the circular-cylindrical blower pipe,the blower pipe comprises at least one plate that is bent and subsequently joined at opposing plate rims for forming the circular-cylindrical blower pipe,the blower pipe has two opposing ends,the blower pipe is, at least at its one end, bent outwards at right angles to the outside of the blower pipe for forming a mounting flange on which means are provided for mounting of the axial fan in a tubing system,the at least one plate comprises a rust-resistant metal plate at least on the outside and the inside of the blower pipe, andthe opposed plate rims extend along a same plane, and are joined in a rim-by-rim manner, without overlap, by soldering with a rust-resistant filler material.