Fluid heating device

A fluid heating device comprising:

• a container which has an outer cylindrical member and inner cylindrical members arranged inside the outer cylindrical member, fluid being supplied to a fluid space between an inner surface of the outer cylindrical member and outer surfaces of the inner cylindrical members in the container;
• lamp heaters arranged in the inner cylindrical members;
• a first nozzle member arranged on a leading end side of the lamp heaters and having an air supply port;
• and
• a first guide mechanism that guides first gas supplied from the air supply port of the first nozzle member, wherein
• the inner cylindrical members include a central inner cylindrical member arranged at a center of the outer cylindrical member in a plane orthogonal to a central axis of the outer cylindrical member, and a plurality of peripheral inner cylindrical members arranged around the central inner cylindrical member,
• the lamp heaters include a central lamp heater arranged in the central inner cylindrical member, and peripheral lamp heaters respectively arranged in the plurality of peripheral inner cylindrical members, and
• the first guide mechanism guides the first gas to a leading end side of the central lamp heater.