Motor Cooling and Noise Reduction in a Copier
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Feb-01
A motor provides mechanical power to both a positive pressure air pump and a vacuum air pump. The characteristics of the devices which use the positive and negative pressure air is that a bleed port must be provided in each in order to obtain the proper air pressure/flow balance. By locating the motor, the two pumps and both bleed ports within a sound-proof enclosure, the air within the enclosure is maintained at a relatively low temperature, and the motor is thus cooled, due to the fact that fresh air continuously passes out of one bleed port and into the other, causing ambient temperature air to circulate within the enclosure, and yet the noise of the motor is contained within the enclosure.