Rotary heat exchanger

A rotary heat exchanger comprising:

• a tubular-shaped heat transfer tubular body which is rotatable with a central axis as a rotation center, which allows a first medium to flow therein, and outside of which a second medium having a temperature different from a temperature of the first medium is disposed;
• at least one of an outer sliding contact member which is in sliding contact with an outer circumferential surface of the heat transfer tubular body and an inner sliding contact member which is in sliding contact with an inner circumferential surface of the heat transfer tubular body;
• a central member which is provided on an inner side of the heat transfer tubular body in a radial direction, which is fixed coaxially with the heat transfer tubular body and through which the first medium circulates from one side to the other side in the axial direction;
• and
• a pair of bearings which is respectively located at the one side and the other side of an end of the central member in the axial direction;
• wherein
• the heat transfer tubular body is rotatably supported with respect to the central member via the bearings disposed at the one side and the other side of end portions of the central member in the axial direction,
• the heat transfer tubular body has a relay member which is provided at the other side of the central member and supplies the first medium circulating inside the central member between the heat transfer tubular body and the central member, and
• the relay member is formed so that the first medium circulates therein and rotates with a main body portion of the heat transfer tubular body, and supplies the first medium to the other side of the central member in the axial direction than the other side of the central member.