Patent ID: 7709769

Claim:
A steam cooker, comprising: a steam generator for generating steam; a steam temperature-raising device for raising a temperature of steam coming from the steam generator; a heating chamber provided with a ceiling steam outlet on its ceiling side, in which an object to be cooked is heated by steam supplied from the steam temperature-raising device via the ceiling steam outlet, said steam temperature-raising device including: a tray-shaped case having a recessed part which has a sidewall provided with a steam supply port through which steam from the steam generator enters the recessed part, the recessed part having a planar shape that is roughly symmetrical with respect to a center line of a steam flow entering through the steam supply port, the tray-shaped case being placed horizontally, with an opening of the recessed part directed downward, on the heating chamber at the ceiling steam outlet; a heater placed in the recessed part such that a planar shape of the heater is roughly symmetrical with respect to said center line; and a spiral heat radiation fin wound around the heater and having a fin pitch of 10 mm or less.