Draft inducer having a backward curved impeller

Details Draft inducer having a backward curved impeller Draft inducer having a backward curved impeller

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 27/02 (2006.01) F04D 25/06 (2006.01) F04D 29/28 (2006.01) F23L 17/00 (2006.01) H02P 7/29 (2006.01)

Patent

CA 2563471

A draft Inducer is disclosed. The draft Inducer includes an impeller (300) having one or more backward curved blades. The impeller is coupled to a motor (440) which is preferably a DC motor. The DC motor (440) resides at the center of the impeller (300) and is housed within the impeller structure (310). The draft Inducer may be mounted on a hot water heater between the hot and cold water pipes such that the impeller spins about a vertical axis.

L'invention se rapporte à un dispositif à tirage induit. Ce dispositif à tirage induit comporte une roue (300) ayant une ou plusieurs aubes inclinées vers l'arrière. Ladite roue est couplée à un moteur (440) qui est de préférence un moteur à courant continu (CC). Ce moteur CC (440) est disposé au centre de la roue (300) et il est logé à l'intérieur d'une structure de ladite roue (310). Ce dispositif à tirage induit peut être monté sur un dispositif de chauffage à eau chaude entre les conduites d'eau chaude et d'eau froide de sorte que la roue tourne autour d'un axe vertical.

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