초록 ▼

A food service system for institutional or other use is provided by a stack of insulated trays and a cart. In one embodiment the cart includes a heating and/or cooling source with an outlet and a return. The trays are provided with openings to permit the passage of heated or cooled air from the outl

A food service system for institutional or other use is provided by a stack of insulated trays and a cart. In one embodiment the cart includes a heating and/or cooling source with an outlet and a return. The trays are provided with openings to permit the passage of heated or cooled air from the outlet through the stack to the return. In another embodiment the trays and cart are combined with a refrigeration unit and a heating unit to permit simultaneous heating and cooling of food portions held in the trays.

대표청구항 ▼

A food service system comprising a closed base structure having an inlet and an outlet provided therein, means to change the air temperature from the ambient means in said base structure for supplying forced air other than at ambient temperature through said outlet, a stack of matched separable tray

A food service system comprising a closed base structure having an inlet and an outlet provided therein, means to change the air temperature from the ambient means in said base structure for supplying forced air other than at ambient temperature through said outlet, a stack of matched separable trays each having compartments thermally insulated from each other disposed on top of said base structure, one compartment in each tray positioned over a corresponding compartment in a tray below to form a first column of compartments, another compartment in each tray positioned over a corresponding compartment in a tray below to form a second column of compartments, said trays disposed on said base structure with said first column positioned over said outlet and said second positioned over said inlet, openings around said compartments in said first and second columns permitting air to flow upward in said first column from said outlet and downward in said second column to said inlet and means having a closed passage connecting said first column to said second column.