Induction cooking

An induction cooking appliance comprising:

• a generally planar, relatively thin cooktop that has an edge along its perimeter, the cooktop having an upper surface and a lower surface;
• power electronics;
• a plurality of electrical coils that are separated by and located just below the lower surface of the cooktop;
• a coil drive system that is located below the cooktop and is operatively connected to the coils such that the coil drive system provides alternating current that directly causes the coils to produce a time-varying electromagnetic field;
• a controller that controls the provision of alternating, current by the coil drive system to the coils;
• a user-operable control that is operationally coupled to the controller;
• a divider spaced below the cooktop and below the coils, where a cooling plenum is defined between the lower surface of the cooktop and the divider and has air inlet openings in or proximate the edge of the cooktop, and wherein the electrical coils are located in the cooling plenum;
• wherein the coil drive system is located in a volume that is located below the cooling plenum and that is separate from the cooling plenum and;
• one or more fans that draw air into the cooling plenum and thus over the lower surface of the cooktop and over the coils, to cool both the cooktop and the coils;
• and
• wherein the cooling plenum further comprises baffles that span the spaces between the coils, the baffles extending essentially from the lower surface of the cooktop to the divider, so as to inhibit air flow through the plenum other than over the coils and over the bottom of the cooktop.