Apparatus and method for shielding an electronic module from electromagnetic radiation

An apparatus for shielding an electronic module from electromagnetic radiation, the apparatus comprising:

• a cover, the cover having a first surface and a second surface opposed to the first surface, the second surface having an edge defining a perimeter and having a recessed region relative to the edge;
• a wall disposed in the recessed region and substantially perpendicular thereto, the wall and at least a portion of the edge defining a compartment;
• an EMI-attenuating material formed in the compartment to at least partially shield the compartment from electromagnetic radiation;
• a plurality of fluid distributing manifolds formed in the first surface, each fluid distributing manifold having a recessed surface opposing the compartment;
• a fluid collecting conduit formed in the cover adjacent to at least a portion of a perimeter of the compartment, the fluid collecting conduit connecting the first surface and the second surface;
• and
• a plurality of nozzles formed in the recessed surface of each fluid distributing manifold, each nozzle having a receptacle end and a spray end, the spray end having an aperture, the receptacle end being in communication with the recessed surface and the spray end being in communication with the compartment,
• the receptacle end of each nozzle receiving a fluid from one of the plurality of fluid distributing manifolds, the spray end of each nozzle atomizing the fluid and discharging the atomized fluid through the aperture into the compartment, the fluid collecting conduit removing the fluid from the compartment.

A method for spray-cooling a shielded electronic module, the method comprising:

• providing a cover having a first surface and a second surface opposed to the first surface, the second surface having an edge defining a perimeter and having a recessed region, the recessed region having a wall disposed therein, the wall and at least a portion of the edge defining a compartment;
• applying an EMI-attenuating material to at least a portion of the compartment;
• supplying a fluid to a fluid distributing manifold formed in the cover;
• receiving the fluid by a nozzle disposed in the fluid distributing manifold, the nozzle having a spray end in communication with the compartment and an aperture disposed at a tip of the spray end;
• atomizing the fluid by the spray end of the nozzle;
• and
• discharging the atomized fluid into the compartment via the aperture.