Patent ID: 6428410
Filing Date: 2002-08-06
Classification: F24F,Y10T

Abstract:
A vacuum ventilation system comprising:a venturi vacuum pump unit including a vacuum-pump housing defining a compressed-air inlet, a pump vacuum inlet, and a pump exhaust port, said vacuum pump unit receiving compressed air at said compressed-air inlet and exhausting said compressed air at said pump exhaust port, with a flow of said compressed air through said vacuum-pump housing causing a venturi ventilation suction at said pump vacuum inlet; a control-valve unit rigidly attached to said vacuum-pump housing at said compressed-air inlet and including a movable valve for regulating flow of compressed fluid through said control-valve unit to said compressed-air inlet, said control valve unit having an upstream inlet for receiving compressed air from a compressed-air source and regulating the amount of compressed air fed to said compressed-air inlet of said vacuum pump housing in response to movement of said movable valve and thereby controlling the amount of ventilation suction at said pump vacuum inlet; and a mount system rigidly attached to said venturi vacuum pump unit for mounting said vacuum ventilation system at a work station, wherein said mount system includes a rigid mount adapter having a first end for being rigidly attached to said vacuum-pump housing at said pump vacuum inlet and a second end for being rigidly attached to a pipe through which a ventilation suction at said pump vacuum inlet is applied.