Refrigeration – Air compressor – cooler and expander type
Patent
1992-11-13
1994-06-28
Bennet, Henry A.
Refrigeration
Air compressor, cooler and expander type
62 86, 62 87, 62402, 62 78, F25D 900, B01D 5304
Patent
active
053236246
ABSTRACT:
An air conditioning system (10), being powered by a supply of compressed air, includes an air cycle machine (12) and incorporates a pair of regenerable bed filters (44,46). In operation, the filters are alternately cycled in and out of service with one of the filters receiving pressurized air for filtration from the air cycle machine compressor (30), while a backflow of purge air is passed through the other filter to remove accumulated contaminants from the bed thereof, thereby regenerating the filter. The purge air comprises conditioned air from the air cycle machine turbine (32). The contaminant laden purge air discharging from the filter being cleansed, is passed to a subatmospheric pressure region (77) in the ram air duct (20) upstream of the air cycle machine fan (28) and downstream of the heat exchangers (22, 24) for venting therefrom to the atmosphere via the fan (28).
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Bennet Henry A.
Habelt William W.
Kilner Christopher B.
United Technologies Corporation
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