초록 ▼

A conventional fuel cell comprises a plurality of cell elements stacked via separator plates, each cell element comprising an electrolyte plate, and cathode and an anode which sandwich the electrolyte plate. A power generation part of the fuel cell is defined by the electrolyte plate, cathode and an

A conventional fuel cell comprises a plurality of cell elements stacked via separator plates, each cell element comprising an electrolyte plate, and cathode and an anode which sandwich the electrolyte plate. A power generation part of the fuel cell is defined by the electrolyte plate, cathode and an anode. Oxidizing gas and fuel gas are supplied to each cell element in the same direction but the direction is opposite the gas flow of an adjacent cell element. In the improvement, preheating devices are provided next to the power generation part as a part of the fuel cell in the direction gases flow, in a manner such that both incoming and outgoing gases pass through the preheating device. The preheating device includes a plurality of heat exchange promoting elements in the form of projections provided on both faces of the separator plate.

대표청구항 ▼

A fuel cell comprising a plurality of fuel cell elements stacked via separator plates, each cell element comprising an electrolyte plate, cathode and an anode, the electrolyte plate being sandwiched by the cathode and the anode, oxidizing gas and fuel gas being supplied to each cell element in the s

A fuel cell comprising a plurality of fuel cell elements stacked via separator plates, each cell element comprising an electrolyte plate, cathode and an anode, the electrolyte plate being sandwiched by the cathode and the anode, oxidizing gas and fuel gas being supplied to each cell element in the same direction in one cell element but in the direction opposite the gas flow of an adjacent cell element, passages for the oxidizing gas and the fuel gas being formed by projections provided on both faces of the separator plate, and the stack of the cathode and the anode defining a power generation part of the fuel cell, characterized in that preheating devices are proivded as a part of the fuel cell next to the power generation part in the direction of said gases flow, in a manner such that both incoming and outgoing gases pass thrugh the preheating devices and said preheating deivce comprises heat exchange promoting elements provided on both faces of the separator plate, such that the heat is transferred from the outgoing gases to the incoming gases.