| 摘要 |
A filter formed of a filter material, such as, fluororesin, cellulose ester, polycarbonate or silica fiber is provided in a refrigerant flow passage of a refrigeration system. In the refrigerant flow passage, the filter is sandwiched by porous members, or the filter is attached to a porous member by means of, such as, heat sealing. The filter may be provided in a drier provided in the refrigerant flow passage. Alternatively, the filter may be provided in the refrigerant flow passage within a sealed casing of a refrigerant compressor which is incorporated in the refrigeration system.
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