Molded core filter drier with filter media molded to core for use in heat pump systems

A filter-drier for drying refrigerant circulated in a refrigeration system by removing moisture therefrom, the filter-drier comprising:

• a casing having an inlet for receiving refrigerant, and an outlet for discharging refrigerant, the casing including opposed end portions and an intermediate portion disposed between said end portions;
• a molded core including inlet and outlet end portions having a through passage therebetween disposed in said casing between said casing inlet and outlet and receiving flow of refrigerant therethrough;
• holding means between said casing and said core for operatively holding the core in place;
• and
• a filter bonded to the core;
• the core passage having opposed open ends and the passage being lined with a filter;
• and
• the core passage open ends including annular portions, and the filter being bonded to said annular portions.

A filter-drier for drying refrigerant circulated in a heat pump refrigeration system by removing moisture therefrom, the filter-drier comprising:

• a casing having an inlet for receiving refrigerant and an outlet for discharging refrigerant, and opposed end plates each having inlet and outlet openings having check valves defining the direction of the flow;
• a molded core including inlet and outlet end portions having a through passage therebetween said core being disposed in said casing and held in place between said opposed end plates and receiving flow of refrigerant therethrough, said core including opposed inlet and outlet end faces and said passage being cylindrical;
• and
• a filter media including a cylindrical portion lining said passage and annular end portions, said filter media being molded to said core.

A filter-drier for drying refrigerant circulated in a refrigeration system by removing moisture therefrom, the filter-drier comprising:

• a casing having an inlet for receiving refrigerant, and an outlet for discharging refrigerant, the casing including opposed end portions and an intermediate portion disposed between said end portions;
• a molded core including inlet and outlet end portions having a through passage therebetween disposed and operatively held in said casing between said casing inlet and outlet and receiving flow of refrigerant therethrough;
• and
• a filter bonded to the core by adhesive.

A filter-drier for drying refrigerant circulated in a refrigeration system by removing moisture therefrom, the filter-drier comprising;

• a casing having an inlet for receiving refrigerant, and an outlet for discharging refrigerant, the casing including opposed end portions and an intermediate portion disposed between said end portions;
• a molded core including inlet and outlet end portions having a through passage therebetween disposed and operatively held in said casing between said casing inlet and outlet and receiving flow of refrigerant therethrough;
• a filter bonded to the core;
• and
• the core being formed from a desiccant/binder mix and the filter being bonded to the core by the binder.