Liquid purification or separation – Flow – fluid pressure or material level – responsive – Check valve
Patent
1978-04-20
1980-06-24
Cintins, Ivars C.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Check valve
210266, 210DIG6, B01D 2702
Patent
active
042094011
ABSTRACT:
A filter drier finding application in a refrigeration system, for example, includes a tubular housing having improved fluid flow characteristics within the filtering media of the filter drier. The filter drier includes an axial arrangement of elements commencing at the inlet end of the housing with an absorbent material fill portion which extends across the diameter of the housing. The absorbent material fill portion includes first and second boundary layers spaced from one another, and absorbent material positioned between the boundary layers. The boundary layers are pervious to fluid flow. The axially innermost boundary layer, with respect to the inlet, includes a central hub portion which seats a first end of a coil compression spring. The coil compression spring has a tubular body part and an enlarged second end. Filter media in the form of a fibrous material is mounted about the body part of a coil compression spring, the filter material being sized so that an unobstructed flow path exists between its outer periphery and the inner periphery of the housing. A retainer is mounted along the second end of the spring and closes the flow path so that fluid flow necessarily passes through the filter material toward the center of the filter. Finally, a final layer of fibrous filter material and a positioning plate are provided along the outlet end of the housing.
REFERENCES:
patent: 2583812 (1952-01-01), Briggs et al.
patent: 3308957 (1967-03-01), Klein
patent: 3680707 (1972-08-01), Zeek
patent: 3802564 (1974-04-01), Turman
patent: 3815752 (1974-06-01), Hoffman et al.
patent: 4029580 (1977-06-01), Lange
Cintins Ivars C.
Emerson Electric Co.
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