| CPC F16K 11/074 (2013.01) [F16K 27/045 (2013.01)] | 20 Claims |
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1. A rotary disc valve comprising:
a rotatable assembly including:
a drive shaft configured to selectively rotate about an axis of rotation thereof, the drive shaft having a central shaft and a flow control wall extending outwardly from the central shaft, the flow control wall including an inner surface and an outer surface, the inner surface of the flow control wall defining a flow chamber within the drive shaft; and
a rotary disc coupled to the drive shaft and configured to rotate in unison therewith, the rotary disc including an inner flow passage and an outer flow passage formed therethrough, the inner flow passage always axially aligned with and fluidly coupled to the flow chamber of the drive shaft and the outer flow passage always fluidly coupled to the outer surface of the flow control wall; and
a fixed disc sealingly engaging the rotary disc, the fixed disc including a first flow opening, a second flow opening, and a third flow opening formed therethrough and disposed around the axis of rotation of the drive shaft, wherein the rotatable assembly is rotatably adjustable to a plurality of rotational positions via the selective rotation of the drive shaft about the axis of rotation thereof, wherein each of the rotational positions includes the inner flow passage of the rotary disc fluidly coupling the flow chamber of the drive shaft to a pair of the first flow opening, the second flow opening, and the third flow opening and the outer flow passage of the rotary disc fluidly coupling the outer surface of the flow control wall to a remaining one of the first flow opening, the second flow opening, and the third flow opening not forming the pair fluidly coupled to the inner flow passage.
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