Filter block and method of making the same

Details Filter block and method of making the same Filter block and method of making the same

1979-12-04

1981-05-12

Capossela, Ronald C.

Refrigeration

Refrigeration producer

With refrigerant treater

62 85, F25B 4300

Patent

active

042664080

ABSTRACT:
A filter-drier block for use in refrigeration systems to filter and remove moisture from the refrigerant fluid, and the method of making the block. The block is comprised of granular adsorbent material bound together to form a rigid block by the use of phenolic resin and polyisocyanate binders and characterized by a low pressure drop for fluid passing through the block. The method of making the block includes the steps of mixing dry adsorbent granules with solutions of the two binders, blow molding the mixture into a block, curing the resins with an alkaline gas, purging the block of the gas by passing air through the block, and heating the block to drive off the solvents for the binders. The invention also includes a refrigeration system utilizing the block.

REFERENCES:
patent: 3178022 (1966-04-01), Balogh
patent: 3238056 (1966-03-01), Pall et al.
patent: 3538020 (1970-11-01), Heskett et al.
patent: 3545227 (1970-12-01), Grahl
patent: 3572050 (1971-03-01), Bottum
patent: 3811347 (1974-05-01), Hayes
patent: 3853026 (1974-11-01), Heskett et al.
patent: 4072649 (1978-02-01), Kubens
patent: 4079031 (1978-03-01), Sardessai et al.

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