Air fan apparatus
First Claim
1. Air fan apparatus comprising a rigid frame mounted on a support base, said frame being provided with a top portion;
- fan means comprising two vertically spaced pairs of centrifugal air fans, the housing of said fans being each fixedly mounted on said frame, the fans of each pair being horizontally aligned, the rotors of each pair being disposed on a common axis, and a single drive shaft connecting the two rotors of each pair of fans, a single drive belt connecting said two drive shafts, a drive motor, a drive belt connecting said motor with one of the mentioned drive shafts to thereby drive the rotors mounted on the latter drive shaft and to simultaneously drive the other drive shaft and the rotors thereon through the single drive belt, and two vibration-damping components, one on each side of the fan means and extending between the support base and the top portion of the frame, said vibration-damping components mounting the two mentioned drive shafts and the drive motor, whereby the vibrations generated by the fan rotor and the drive motor are dampened during operation of both pairs of air fans.
0 Assignments
0 Petitions
Accused Products
Abstract
Apparatus comprising a plurality of centrifugal fans arranged in transverse pairs, one pair above the other, to discharge their air output into a common plenum, thereby reducing both the cost, weight and the volume of space that would be occupied by fewer larger air fans of like capacity, and also obtaining a more efficient air distribution in the respective upper and lower portions of the plenum. Each of said fans has its scroll-type housing fixedly mounted on a support frame and its fan rotor, shafts, bearings, drive motor, and drive, mounted on vibrationdamping components mounted on said frame which, thereby isolating said fan housing from the effects of such vibration.
38 Citations
2 Claims
-
1. Air fan apparatus comprising a rigid frame mounted on a support base, said frame being provided with a top portion;
- fan means comprising two vertically spaced pairs of centrifugal air fans, the housing of said fans being each fixedly mounted on said frame, the fans of each pair being horizontally aligned, the rotors of each pair being disposed on a common axis, and a single drive shaft connecting the two rotors of each pair of fans, a single drive belt connecting said two drive shafts, a drive motor, a drive belt connecting said motor with one of the mentioned drive shafts to thereby drive the rotors mounted on the latter drive shaft and to simultaneously drive the other drive shaft and the rotors thereon through the single drive belt, and two vibration-damping components, one on each side of the fan means and extending between the support base and the top portion of the frame, said vibration-damping components mounting the two mentioned drive shafts and the drive motor, whereby the vibrations generated by the fan rotor and the drive motor are dampened during operation of both pairs of air fans.
-
2. The air fan apparatus according to claim 1 in which only the shaft common to one pair of air fans is directly driven by the drive motor and the drive shaft common to the other pair of air fans being driven only by the shaft of the motor-driven pair of air fans.
Specification