Patent ID: 8999045
Filing Date: 2015-04-07
Classification: B01D

Abstract:
1. A regenerative air dryer system comprising: at least one dryer module including: a housing having a inlet air passage, an outlet air passage, and a wash air passage; a desiccant canister including a plurality of canister holes and a drying orifice, the desiccant canister mounted to the housing and in communication with the inlet and wash air passages via the plurality of canister holes and with the outlet air passage via the drying orifice; and a single controllable valve selectively moveable between a first position and a second position, wherein the single controllable valve, when in the first position, opens the inlet air passage and blocks the wash air passage to form a supply air flow path from the inlet air passage into the desiccant canister via the plurality of canister holes, through the desiccant canister in a first direction, and out of the desiccant canister to the outlet air passage via the drying orifice, and when in the second position, blocks the inlet air passage and opens the wash air passage to form a wash air flow path from the outlet air passage into the desiccant canister via the drying orifice, through the desiccant canister in a direction opposite the first direction, and out of the desiccant canister to the wash air passage via the plurality of canister holes.