Antivibration suspension device for a blower
AssigneeOlivetti-Canon Industriale S.p.A.
InventorsMichele Olivero, Renato Bortolin
Life of this patent
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Abstract
In photocopying and/or printing machines, the blower or fan used for internal ventilation is suspended from the structure of the machine by springs slung between the blower casing and the machine structure to eliminate the transmission of vibrations to delicate members in the machine itself.
Claims9
An antivibration suspension device for a blower mounted on a rigid structure, said blower having a casing, an impeller with blades which rotates on said casing and a motor mounted on said casing so as to turn said impeller;
- having:
- the suspension device comprising two sets of springs anchored by first ends of said springs to opposite sides of said casing and by opposite ends of said springs to fixed points on said rigid structure, wherein each of said springs is slung between said casing and said rigid structure with an extension .delta.L of between 35% and 45% of the initial length of said spring.
Method for antivibration suspension of a blower on a rigid structure, said blower comprising a casing, an impeller having blades and a motor mounted on said casing so as to turn said impeller, the method comprising the following steps:
- (a) fitting two sets of springs, by anchoring first ends of said springs to opposite sides of said casing, each spring having dimensions such as to enable it to support a working load C given by C=KP/n, in which P is total weight of said blower, n is number springs, and K is a positive number of between 4 and 11.5;
- (b) slinging said springs between said casing and said rigid structure so as to bring about an extension .delta.L of each spring of between 35% and 45% of an initial length of said spring,
- (c) anchoring opposing ends of the springs of each set to fixed points on said rigid structure in such a way that at least two of said springs diverge by an angle .beta. of between 10.degree. and 30.degree.whereby said blower is suspended from said rigid structure in a relative position such that longitudinal axes of said springs of said sets form an angle .alpha. of between 5.degree. and 15.degree. relative to a horizontal straight line.
Dependencies are inferred from the claim text.