US 9,999,338 B2Granted

Filter assembly for a dishwasher appliance

AssigneeHaier US Appliance Solution, Inc.

InventorJoel Charles Boyer

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Abstract

A filter assembly for filtering a wash fluid to be circulated by a circulation pump in a dishwasher appliance is provided. The filter assembly defines an axial direction and includes a first filter member including a first filter panel and defining a first discharge opening, and a second filter member including a second filter panel and defining a second discharge opening. The second filter panel is spaced from the first filter panel along the axial direction and configured in series flow with the first filter panel. The filter assembly further includes a circumferentially continuous discharge chamber disposed radially outward of the first filter member and the second filter member, the discharge chamber in fluid communication with the first filter member through the first discharge opening and in fluid communication with the second filter member through the second discharge opening.

Claims18

Dependent claims

A filter assembly for filtering a wash fluid to be circulated by a circulation pump in a dishwasher appliance, the filter assembly defining an axial direction, a radial direction orthogonal to the axial direction, and a circumferential direction extending around the axial direction, the filter assembly comprising:

a first filter member including a first filter panel and defining a first discharge opening, the first discharge opening oriented along the circumferential direction;
a second filter member including a second filter panel and defining a second discharge opening, the second discharge opening oriented along the circumferential direction, the second filter panel spaced from the first filter panel along the axial direction and configured in series flow with the first filter panel such that the wash fluid is filtered by the first filter panel and by the second filter panel prior to being recirculated by the circulation pump;
a circumferentially continuous discharge chamber disposed radially outward of the first filter member and the second filter member, the discharge chamber in fluid communication with the first filter member through the first discharge opening and in fluid communication with the second filter member through the second discharge opening;
a housing, the housing comprising a peripheral wall, and wherein the first filter member includes a first outer wall extending around a perimeter of the first filter panel and the second filter member includes a second outer wall extending around a perimeter of the second filter panel, wherein the first discharge opening is defined in the first outer wall and the second discharge opening is defined in the second outer wall, and wherein the discharge chamber is defined between the peripheral wall and the first and second outer walls:
a first guide member slanting inwardly along the radial direction from the first outer wall adjacent to the first discharge opening;
and
a second guide member slanting inwardly along the radial direction from the second outer wall adjacent to the second discharge opening.

4 more elements

A dishwasher appliance defining a vertical direction, the dishwasher appliance comprising:

a tub defining a wash chamber;
a sump positioned at a bottom portion of the tub along the vertical direction;
a circulation pump for circulating a wash fluid in the sump to the wash chamber;
and
a filter assembly disposed within the sump and in flow communication with the circulation pump, the filter assembly defining an axial direction generally parallel to the vertical direction of the dishwasher appliance, a radial direction orthogonal to the axial direction, and a circumferential direction extending around the axial direction, the filter assembly comprising:
a first filter member including a first filter panel and defining a first discharge opening, the first discharge opening oriented along the circumferential direction;
a second filter member including a second filter panel and defining a second discharge opening, the second discharge opening oriented along the circumferential direction, the second filter panel spaced from the first filter panel along the axial direction and configured in series flow with the first filter panel such that the wash fluid is filtered by the first filter panel and by the second filter panel prior to being recirculated by the circulation pump;
and
a circumferentially continuous discharge chamber disposed radially outward of the first filter member and the second filter member, the discharge chamber in fluid communication with the first filter member through the first discharge opening and in fluid communication with the second filter member through the second discharge opening.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/987,862Filed 5 Jan 2016
Published: US 2017/0188782 A16 Jul 2017
Granted: 19 Jun 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A47L 15/4202
Details: water filter means or strainers
A47L 15/4208
Water filter means or strainers: arrangements to prevent clogging of the filters, e.g. self-cleaning
A47L 15/4225
Water supply, recirculation or discharge arrangements; Devices therefor: arrangements or adaption of recirculation or discharge pumps
B01D 29/56
With multiple filtering elements, characterised by their mutual disposition: in series connection