Abstract: A fluid heating device includes a container in which fluid is supplied between an inner surface of an outer cylindrical member and outer surfaces of the inner cylindrical members, lamp heaters arranged in an inner cylindrical members, a nozzle member arranged on a leading end side of the lamp heaters and having an air supply port, and a guide mechanism that guides gas supplied from the air supply port of the nozzle member. The inner cylindrical members include a central inner cylindrical member arranged at a center of the outer cylindrical member, and 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 peripheral inner cylindrical members. The guide mechanism guides the gas to a leading end side of the central lamp heater.

Abstract: A fluid heating device includes an outer cylindrical member, and inner cylindrical members arranged inside the outer cylindrical member, a container in which fluid is supplied to a fluid space between an inner surface of the outer cylindrical member and outer surfaces of the inner cylindrical members, 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. 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.