To provide an evaporator capable of satisfactorily performing evaporation and securely enabling a reduction in size.
In this evaporator 10 for a thermoelectric generating device, an evaporation part 12 is is formed of the opposed faces 14A of plate-like parts 14, spaces between the opposed faces 14A are allowed to communicate with each other along the flow direction of a hot medium, and a critical heat flow flux rising means is formed by the opposed faces 14A themselves. Accordingly, in the spaces of the evaporation part 12, the bypassing of a liquid (condensed heat medium) from the downstream side can be produced in a specified portion, and the critical heat flow flux in the evaporation part 12 can be increased. By this, even if the evaporation part 12 is heated to a high temperature, film boiling is hard to be produced, and the condensed heat medium can be satisfactorily evaporated by nucleate boiling. As a result, since the evaporation of the condensed heat medium can be performed without any problem even if the evaporation part 12 is reduced in size to such a degree that is easily heated to a high temperature, the evaporation part 12 can be reduced in size accordingly to promote a reduction in size of the entire evaporator.
SHINTANI TOSHIYA
KADOTANI KANICHI
TANIMURA TOSHINOBU
Kanji Nakayama
Tsuyoshi Ishizaki