Low Noise Exhaust System

Abstract

A low noise exhaust system for use with household or industrial gas or water pumping equipment, such as kitchen or bathroom exhaust systems. The system includes a blower assembly mounted outside the building's enclosure or barrier surface to relocate the primary noise source outdoors. The blower assembly is connected to the indoor exhaust pipe via a flex tube and an inlet pipe. A filter system is mounted inside the blower assembly's inlet end to absorb high-frequency acoustic energy and filter grease. The system utilizes multiple vibration isolators and an adhesive plate to decouple the blower assembly from the building structure, and is designed with various configurations to create acoustic impedance mismatches throughout the system, thereby maximizing transmission loss and significantly reducing the indoor noise level. The outdoor mounting location, is lower than the indoor pipe connector, and facilitates grease drainage away from the indoor hood.

Dependencies are inferred from the claim text.