This invention pertains to a combustion air blower assembly for a furnace and more particularly, to an improved motor mounting arrangement for securing a motor to the casing of the combustion air blower assembly.
In the past, the motor in a combustion air blower assembly has been secured directly to the casing by screw means. To help dissipate vibration energy, it was suggested to provide rubber vibration mounts or grommets between the screws and a frame secured to the motor. A deficiency of such mounting arrangement was a relatively high noise level. This noise level was considered undesirable. Further, there was sometimes undesirable axial movement of the motor relative to the casing.
An object of the present invention is to provide improved mounting means for mounting an electric drive motor on the housing or casing of a combination air blower assembly, wherein deficiencies and disadvantages of prior constructions are obviated.
Another object of the present invention is to provide improved mounting means for securing an electric drive motor in close proximity to the casing of a combustion air blower assembly, while allowing motor flexure in a direction radial to the axis of the motor to dissipate torsional vibration energy and maintaining the structural integrity of the motor in the axis thereof.
A further object of the present invention is to provide a generally J-shaped isolation spring for uniquely mounting an electric drive motor on the casing of a combustion air blower assembly.
Other objects and advantages of the present invention will become more apparent hereinafter.