Patent ID: 9683324
Date: 2017-06-20
CPC Classifications: D06F,F04D

Claim:
1. A fans-motor assembly for condenser laundry dryer machine, comprising: a drive shaft, extending along a longitudinal axis, which can be associated in a rotating manner with a frame of a laundry dryer machine and designed to be connected by means of a transmission belt to a rotating drum thereof; a fan for hot air and a fan for cold air integral in rotation with said drive shaft and designed to convey respectively a flow of drying air and a flow of cooling air along separate paths of said laundry dryer machine; a permanent magnet electric motor associated with said drive shaft and designed to move said drive shaft to rotate, comprising: an internal stator traversed by said drive shaft, said drive shaft being free to rotate within said internal stator; and an external rotor integral with said drive shaft; a belt tightener comprising: a bellcrank lever, distinct from the internal stator, lying on a plane transverse to said longitudinal axis and pivoting about said longitudinal axis, said bellcrank lever having two ends, a first end holding an axle with an idle pulley for the tightening of the transmission belt, a second end being configured to be connected to the frame of the laundry dryer machine via at least an elastic element; and a sleeve that can be associated in a rotating manner with the frame of the laundry dryer machine, said sleeve being rotatingly coupled on an intermediate portion of the drive shaft by means of at least two interposed ball bearings, said sleeve comprising: a first portion supporting the internal stator; and a second portion supporting the bellcrank lever; wherein said bellcrank lever is made in one part with the sleeve.