US 12,280,421 B2
Molten metal filter device for casting vehicle components
Thomas J. Boone, Ann Arbor, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Jun. 23, 2023, as Appl. No. 18/340,226.
Prior Publication US 2024/0424551 A1, Dec. 26, 2024
Int. Cl. B22C 9/08 (2006.01); B22D 11/119 (2006.01); C22B 9/02 (2006.01)
CPC B22C 9/086 (2013.01) [B22D 11/119 (2013.01); C22B 9/023 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A molten metal filter device, comprising:
a housing having an interior surface defining an inlet channel, an outlet channel, and a chamber in fluid communication with the inlet channel and the outlet channel, wherein the inlet channel is configured to convey a flow of molten metal into the chamber and the outlet channel is configured to direct the flow of molten metal out of the chamber;
a heat conductive partition wall disposed between the inlet channel and the outlet channel, wherein the outlet channel is operable to convey the flow of molten metal in a direction counter-current to the direction of the flow of molten metal through the inlet channel, and
a first filter element disposed in the inlet channel, wherein the first filter element includes a form factor occupying a cross-section of the inlet channel perpendicular to a direction of the flow of molten metal through the inlet channel.