Abstract: Inner claws of a fitting part 210 of a dial 105 are engaged with engaging grooves in a rotary encoder 320. A plurality of retaining projections are formed in the dial 105. The retaining projections project radially outward from the fitting part 210 at circumferential intervals from one another. A through hole 500 through which the fitting part 210 can pass and a plurality of recesses through which the plurality of retaining projections can pass are formed in a door frame 120. The plurality of retaining projections are allowed to pass through the recesses only when the retaining projections are coincident in circumferential phase with the recesses. The retaining projections are positioned on one side of the recess portions opposite to an operation part 200 side so as to be freely turnable in synchronism with turning of the operation part 200.

Abstract: A water tank 104 includes a tank main body 130 for storing water therein, and a decorative plate 131 attached to the tank main body 130 and having a height H1 higher than a height H2 of the tank main body. A handle portion is provided in a decorative plate 131 side bottom face of the tank main body 130. At an upper end of the decorative plate 131, a holding recess portion 139 is formed so as to allow a user to hold a top face of the tank main body 130 while gripping the handle portion.

Abstract: A cooker has a cooker main body and a discharged steam cooling unit placed at the top surface of the cooker main body. Inside the discharged steam cooling unit is a duct extending in the front/rear direction. The rear end of the duct is an inlet port connected to an outlet port of the cooker main body. A throat portion is formed in the duct. Air from a blower is blown into the throat portion through a nozzle to generate a suction force at the inlet port by an ejector effect. The duct is branched on the downstream side of the throat portion, and outlet ports are provided at the ends of the branched ducts. Ambient air is sucked in from a gap between the inlet port of the duct and the outlet port of the cooker main body.