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US 11,684,891 B2Granted
Hybrid low dew point compressed air dryer
AssigneeIngersoll-Rand Industrial U.S., Inc.
InventorCharles John Bergh
Life of this patent
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Abstract
The present disclosure is directed to a dryer system for drying compressed gas discharged from a compressor. The dryer system includes a refrigeration drying system operable for removing moisture from the compressed gas and a desiccant drying system with a desiccant wheel located in series downstream of the refrigeration drying system operable for removing additional moisture from the compressed gas.
Claims20
A dryer system for drying a pre-compressed fluid comprising:
- a fluid compressor operable to compress a working fluid, the working fluid compressed by the fluid compressor including liquid particles condensed in a gas flow;
- a dryer system for drying the compressed working fluid in fluid communication with the compressor, the dryer system comprising:
- a first heat exchanger having a pre-cooler portion for pre-cooling the compressed working fluid,
- a refrigeration drying system;
- and
- a desiccant drying system located downstream of the refrigeration drying system, the desiccant drying system operable for removing additional moisture from the working fluid wherein the desiccant drying system includes a desiccant wheel.
3 more elements
A gas dryer for a pre-compressed gas comprising:
- a primary gas flow path extending through a refrigerant dryer circuit and subsequently through a desiccant dryer circuit;
- a secondary gas flow path split off from the primary gas flow path upstream of the desiccant dryer circuit;
- a desiccant wheel positioned in the desiccant dryer circuit configured to remove additional moisture from the gas in the primary gas flow path;
- and
- a regeneration flow path extending through the desiccant wheel, the regeneration flow path in fluid communication with the secondary gas flow path;
- wherein the secondary gas flow path includes an outlet downstream of the desiccant wheel connected to the primary gas flow path upstream of an evaporator in the refrigerant drying circuit.
3 more elements
A method of drying a pre-compressed working fluid comprising:
- transporting a primary flow stream of pressurized working fluid discharged from a compression device through a primary flow path, the primary flow path extending through a refrigerant dryer circuit;
- separating the pressurized working fluid from the primary flow stream into first and second flow streams;
- transporting the primary flow stream through a desiccant dryer circuit;
- and
- separating moisture from the pressurized working fluid in a desiccant wheel located in the desiccant dryer circuit.
2 more elements
Dependencies are inferred from the claim text.