Patent ID: 9746003
Date: 2017-08-29
CPC Classifications: F04D,Y10T

Claim:
1. A motor suspension for fans, the motor suspension comprising: a carrier configured to carry a fan that comprises a motor and a fan wheel, wherein the carrier is an air grille with radially extending braces and individual grille rings that are positioned coaxially to each other relative to a center axis of the air grille and are connected to each other by the radially extending braces; a monolithic inner support ring comprised of a flat annular part positioned in a radial plane of the air grille and further comprised of an annular upright rim connected to an outer radial circumference of the flat annular part, wherein the braces each have a radial inner end that is fastened to the annular upright rim; an outer support ring having a center axis coinciding with the center axis of the air grille, wherein the braces each have an angled radial outer end that is fastened to the outer support ring; wherein the inner support ring further comprises an interface configured to directly connect the fan and wherein the interface is arranged radially inwardly of the annular upright rim on the inner support ring, wherein the air grille alone carries the fan when the fan is directly connected to the interface on the inner support ring and wherein the air grille alone connects and supports the fan on a customer interface in that the outer support ring is connected to a free edge of a nozzle of the customer interface; wherein, for adapting the motor suspension to a vibration behavior of the fan, at least one of a feature selected from a number of the braces and a diameter of the braces is varied to effect a reduction of acoustic noises and/or natural resonances of the motor suspension.