Noise reducing bleed air heat ejection device for a heating syst

Details Noise reducing bleed air heat ejection device for a heating syst Noise reducing bleed air heat ejection device for a heating syst

1999-05-14

2000-10-31

Wilson, Pamela

Ventilation

Vehicle

Having both inlet and outlet airways

454 71, 454 76, B60H 100

Patent

active

061394238

ABSTRACT:
A heat ejection device is disclosed for a heating system. The heat ejection device is adapted to mix ambient air from an interior with bleed air from a heat source. The heat ejection device includes a housing with an inner passage, an inlet and an outlet. The inlet is adapted to channel ambient air into the housing. The outlet is adapted to channel mixed heated and ambient air out of the housing. A dispenser is located in the housing between the housing inlet and outlet and includes an inner chamber which is adapted to receive heated air from a bleed line. The dispenser has a plurality of apertures formed in it which permit air to flow from the inner chamber into the inner passage for mixing with ambient air to form a flow of mixed air. An acoustically absorptive inlet liner is mounted on an inner surface of the housing at the housing inlet. The absorptive inlet liner is adapted to direct ambient air past the dispenser to minimize turbulence and absorb noise. An acoustically absorptive outlet liner is mounted on the inner surface of the housing downstream from the dispenser. The absorptive outlet liner is adapted to absorb noise generated within the heat ejection device caused by the mixing of the ambient and bleed air flows. A heating system incorporating the device is also disclosed.

REFERENCES:
patent: 2277982 (1942-03-01), Hosbein
patent: 3125286 (1964-03-01), Sanders
patent: 3511336 (1970-05-01), Rink et al.
patent: 4978064 (1990-12-01), Steiner
patent: 5114382 (1992-05-01), Steiner
patent: 5196653 (1993-03-01), Kiss
patent: 5197921 (1993-03-01), De Lank et al.

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