Rotary air valve for air distribution system in vehicles

Details Rotary air valve for air distribution system in vehicles Rotary air valve for air distribution system in vehicles

1990-12-10

1992-01-14

Fox, John C.

Fluid handling

Systems

With flow control means for branched passages

251163, F16K 118

Patent

active

050801406

ABSTRACT:
A heating, ventilating and air conditioning system for vehicles incorporating a rotary air valve mounted in a housing for limited arcuate movement with respect to a pivot axis to adjust the amount of opening of two adjacent air flow windows to thereby control the routing and quantity of air flow through the heater core and a heater core bypass. The rotary valve is moved in a track radially spaced above peripheral edges in the housing defining the windows to eliminate frictional drag and wear of the sealing face of the air valve as well as the load on the motor or mechanical actuator. The valve is positioned at an infinitely variable number of positions for partial opening of the windows and a camming system is used to move the valve without drag into or from sealing positions with respect to the two windows.

REFERENCES:
patent: 3570539 (1971-03-01), Herring
patent: 4498528 (1985-02-01), Jacquet
patent: 4597414 (1986-07-01), Johnson
patent: 4627567 (1986-12-01), Thom
patent: 4683913 (1987-08-01), Hoffman et al.

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