Air distribution system

Details Air distribution system Air distribution system

1980-06-23

1982-08-17

Makay, Albert J.

Heat exchange

With valve or movable deflector for heat exchange fluid flow

With by-pass of heat exchanger or heat exchanger section

98 15, 98 38F, 165 42, B60H 306

Patent

active

043443567

ABSTRACT:
An air distribution system for a vehicle cab. The system uses two blowers: a first constant-volume blower for drawing fresh outside air into the cab and a second variable-speed blower for recirculating the inside air. An air filter is positioned upstream of both blowers for filtering out dust and other contaminants. As the fresh outside air passes through the first blower, it is mixed in a mixing zone with inside air which passes thorugh the second blower. This intermixed air is then passed through a temperature controller which includes a heating unit and an air conditioning unit. The temperature controller treats the air stream before it is routed through a series of ductwork to various parts of the operator's compartment of the cab. This two-blower air distribution system is a vast improvement over conventional air distribution systems in that it always provides for a positive air pressurization within the cab thereby preventing the influx of dust.

REFERENCES:
patent: 2123076 (1938-07-01), Madden
patent: 3401619 (1968-09-01), Sotory
patent: 3657992 (1972-04-01), Minnick, Jr.
patent: 3867980 (1975-02-01), Traver
patent: 3924524 (1975-12-01), Whisler
patent: 4007875 (1977-02-01), Stolz et al.
patent: 4072487 (1978-02-01), Irwin
patent: 4088364 (1978-05-01), Termont
patent: 4120527 (1978-10-01), Lawrence
patent: 4140047 (1979-02-01), Bowman

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