Abstract: A printing apparatus includes a head that faces a medium supported by a medium support unit and ejects a liquid, an interference object sensor including a detector that detects an interference object with the head, and a cover that can switch the detector to a shielded state and to an exposed state.

Abstract: A plurality of heat transfer pipes have a circumferential portion arranged at a short distance from an inner surface of a heat exchanger case while they are bundled to form a pipe group and a first chord which retracts toward a center in a direction of cylinder diameter from an arc formed by the circumferential portion. The plurality of bundled heat transfer pipes are loaded in the exchange case such that the first chord and an inner surface of the heat exchange case on a side where a heat exchange medium inlet port is attached are opposed to each other. By making a flow of a heat exchange medium to each heat transfer pipe uniform, a heat exchanger capable of obtaining high heat exchange performance is obtained.

Abstract: A heat exchanger includes a case, a bottom member and a plurality of heat transfer pipes (a pipe group) loaded in the heat exchanger case, in which blood flows from one end through the bottom member. The bottom member has an annular wall, a bottom surface, and a blood inlet port. The bottom surface is opposed to one end of the heat transfer pipe. The bottom surface includes a groove portion and a raised bottom portion provided on each of opposing end sides of the groove portion. The raised bottom portion is inclined such that a distance between the raised bottom portion on a side where the blood inlet port is provided and one end of the heat transfer pipe is smaller than a distance between the raised bottom portion opposite to the side where the blood inlet port is provided and one end of the heat transfer pipe.

Abstract: A heat exchanger includes a case, a bottom member and a plurality of heat transfer pipes (a pipe group) loaded in the heat exchanger case, in which blood flows from one end through the bottom member. The bottom member has an annular wall, a bottom surface, and a blood inlet port. The bottom surface is opposed to one end of the heat transfer pipe. The bottom surface includes a groove portion and a raised bottom portion provided on each of opposing end sides of the groove portion. The raised bottom portion is inclined such that a distance between the raised bottom portion on a side where the blood inlet port is provided and one end of the heat transfer pipe is smaller than a distance between the raised bottom portion opposite to the side where the blood inlet port is provided and one end of the heat transfer pipe.

Abstract: A plurality of heat transfer pipes have a circumferential portion arranged at a short distance from an inner surface of a heat exchanger case while they are bundled to form a pipe group and a first bowstring-shaped portion which retracts toward a center in a direction of cylinder diameter from an arc formed by the circumferential portion. The plurality of bundled heat transfer pipes are loaded in the exchange case such that the first bowstring-shaped portion and an inner surface of the heat exchange case on a side where a heat exchange medium inlet port is attached are opposed to each other. By making a flow of a heat exchange medium to each heat transfer pipe uniform, a heat exchanger capable of obtaining high heat exchange performance is obtained.