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US 11,298,652 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 including:
- a second heat exchanger located downstream from the first heat exchanger, the second heat exchanger having a cooler for further reducing the temperature of the compressed working fluid, and
- a coalescing filter located downstream from the second heat exchanger, operable for removing moisture from the working fluid;
- 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.
5 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 coalescing filter located in the refrigerant dryer circuit configured to remove moisture from a gas in the primary gas flow path prior to entering the desiccant dryer circuit;
- a secondary gas flow path split off from the primary gas flow path downstream of the coalescing filter and 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.
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;
- filtering from the pressurized working fluid, in a coalescing filter located in the refrigerant dryer circuit, at least one of solid particles and liquid particles condensed in the pressurized working fluid;
- 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, downstream of the coalescing filter.
2 more elements
Dependencies are inferred from the claim text.