Dishwasher fine filter pressure relief
AssigneeGeneral Electric Company
InventorsArjan Johannes Hegeman, Gregory Alan Meyer
Life of this patent
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Abstract
A fine filter assembly for a dishwasher includes a filter body, a filter screen coupled to the body; and a pressure relief tube. The pressure relief tube includes a substantially vertical portion having an open top for regulating pressure conditions in the filter body, thereby forming a standpipe that regulates pressure in the filter body. A column of fluid in the relief tube balances the operating pressure in the fine filter assembly. Pressure may be regulated in the fine filter assembly up to a maximum pressure determined by the height of the vertical portion of the tube.
Claims20
A fine filter assembly for a dishwasher, said fine filter assembly comprising:
- a filter body;
- a filter screen coupled to said body;
- and
- a pressure relief tube coupled to said body, said pressure relief tube comprising a substantially vertical portion for regulating pressure conditions in said filter body.
A dishwasher fluid circulation assembly comprising:
- a main pump assembly;
- a drain pump assembly in flow communication with said main pump assembly;
- and
- a fine filter assembly in flow communication with said main pump assembly and said drain pump assembly, said fine filter assembly comprising a body, a filter screen, and a pressure relief tube comprising at least a substantially vertical portion for regulating pressure conditions in said filter body.
A fine filter assembly in accordance with claim II wherein said fine filter assembly comprises an outlet and a check valve in flow communication with said outlet.
A dishwasher system comprising:
- a tub comprising a sump portion and at least one vertical wall;
- a fluid circulation assembly in flow communication with said sump portion, said fluid circulation assembly including a fine filter assembly;
- and
- a fine filter pressure relief tube in flow communication with said fine filter assembly, said pressure relief tube including a substantially vertical portion for regulation pressure in said fine filter assembly.
Dependencies are inferred from the claim text.