Variable position low profile shutter valves

摘要

A method of mixing air in an HVAC system includes the step of simultaneously and differentially rotating the valve plates different degrees of rotation to differentially control air flowing in the housing. An assembly for controlling air flow in an HVAC system includes a mechanism for simultaneously and differentially rotating valves different degrees of rotation. The mechanism includes a control device on each shaft of each valve including a pin extending axially from each valve plate. A slide defines a plurality of serpentine slots with one of the pins slidably disposed in each of the slots. The slots each follow a path incongruent from one another for differentially rotating the valve plates in response to the slide sliding along the guide and the pins moving along the paths of the slots.