Abstract: A heating cooking apparatus includes a heating cooking chamber, a slide rail, a slide plate, a lid portion, a rotation shaft portion, and a holding portion. The heating cooking chamber includes a plate portion disposed at the outer periphery of an opening. The slide rail extends along a first predetermined direction. The slide plate moves along the slide rail. The lid portion is attached to the slide plate and opens and closes the opening. The rotation shaft portion rotates the slide rail using a second predetermined direction orthogonal to the first predetermined direction as a rotation axis. The holding portion holds the slide rail to be freely rotatable with respect to the heating cooking chamber.

Abstract: A heating cooking apparatus includes a heating cooking unit, a lid portion, a detection unit, light source units, and a control unit. The heating cooking unit includes a heating cooking chamber communicated with an opening. The lid portion moves between a closed position at which the lid portion covers the opening and an open position at which the lid portion opens the opening. The detection unit detects whether the lid portion is present at the closed position. The light source units, emit light into the heating cooking chamber. The control unit controls the light source units, when the detection unit detects that either a state of the lid portion being present at the closed position or a state of the lid portion not being present at the closed position is maintained for a predetermined period of time or longer.

Abstract: The invention relates to a fluid transport pipe. A first unit channel in which a channel cross-sectional area continuously decreases toward a downstream side and a second unit channel in which a channel cross-sectional area continuously increases toward the downstream side are alternately combined. A ratio A (=L/{[Smax]1/2-[Smin]1/2}) is set within a range in which a drag reduction rate RD becomes a positive value. The fluid transport pipe includes: a first opening formed in a channel wall of the first unit channel; a second opening formed in a channel wall of the second unit channel; and a bypass channel that allows by-passing of a flow from the first unit channel to the second unit channel through the openings.

Abstract: The invention relates to a fluid transport pipe. A first unit channel in which a channel cross-sectional area continuously decreases toward a downstream side and a second unit channel in which a channel cross-sectional area continuously increases toward the downstream side are alternately combined. A ratio A (=L/{[Smax]1/2-[Smin]1/2}) is set within a range in which a drag reduction rate RD becomes a positive value. The fluid transport pipe includes: a first opening formed in a channel wall of the first unit channel; a second opening formed in a channel wall of the second unit channel; and a bypass channel that allows by-passing of a flow from the first unit channel to the second unit channel through the openings.