Reactor cooling device

A reactor cooling device comprising:

• a housing in which a coolant is stored, the housing having an inner wall surface portion that includes an inner wall surface;
• a reactor that is arranged in the housing, the reactor being arranged to extend along part of the inner wall surface portion of the housing, the reactor including a front-side outer side surface that faces the inner wall surface;
• a rotating body that is rotatably located below the reactor in the housing, the rotating body and the reactor being located so as to at least partially overlap with each other in a previously selected one of turning radius directions of the rotating body, a part of the rotating body being immersed in the coolant stored in the housing, the inner wall surface facing the reactor in the previously selected turning radius direction of the rotating body, and the reactor cooling device is configured to cause a part of the coolant splashed by the rotation of the rotating body to be in contact with the reactor to thereby cool the reactor;
• and
• a coolant flow passage defined between the inner wall surface and the front-side outer side surface facing each other, the coolant flow passage being arranged to enable the part of the coolant splashed by the rotating body to flow through the coolant flow passage, such that the flow of the part of the coolant contacts the reactor and continues flowing past the reactor.