Motor cooling fan blade assembly with finger guard

Details Motor cooling fan blade assembly with finger guard Motor cooling fan blade assembly with finger guard

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/18 (2006.01) F04D 25/08 (2006.01) F04D 29/32 (2006.01) F04D 29/34 (2006.01) H02K 9/04 (2006.01)

Patent

CA 2354807

A prop fan blade assembly for a draft inducer motor cooling fan used in a high efficiency furnace includes rings concentric with and attached to an outer blade guard. Cooling air is drawn through the concentric rings by the fan and blown onto the motor. The rings function as a finger guard while producing a confined airflow pattern which does not interfere with burner operation.

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