Fluid-heating device

A fluid-heating device for heating fluid, comprising:

• a heater configured to generate heat upon application of current;
• an electric component configured to control the application of the current to the heater;
• a tank having an opening portion, the tank being configured to accommodate the heater;
• a top-plate portion configured to close the opening portion of the tank, the top-plate portion being configured to form a fluid chamber through which the fluid flows;
• and
• a first communication port and a second communication port configured to allow the fluid to flow through the fluid chamber, and
• a heating portion formed so as to cover a surroundings of the heater, the heating portion being configured to heat the fluid, wherein
• the electric component is provided on an outer side of the fluid chamber along the top-plate portion,
• the first communication port and the second communication port are arranged on a same side with respect to the heater,
• the first communication port is arranged so as to face the heater, and
• the second communication port is arranged so as to face a portion between the first communication port and the top-plate portion,
• the top-plate portion includes a heat releasing projected portion, the heat releasing projected portion being projected out into the fluid chamber from a back side of a contact portion with which the electric component is brought into contact, and
• the heat releasing projected portion is not in contact with the heating portion.

A fluid-heating device for heating fluid, comprising:

• a heater configured to generate heat upon application of current;
• an electric component configured to control the application of the current to the heater;
• a tank having an opening portion, the tank being configured to accommodate the heater;
• a top-plate portion configured to close the opening portion of the tank, the top-plate portion being configured to form a fluid chamber through which the fluid flows;
• and
• a first communication port and a second communication port configured to allow the fluid to flow through the fluid chamber, wherein
• the electric component is provided on an outer side of the fluid chamber along the top-plate portion,
• the first communication port and the second communication port are arranged on a same side with respect to the heater,
• the first communication port is arranged so as to face the heater,
• the second communication port is arranged so as to face a portion between the first communication port and the top-plate portion,
• the tank includes
• a first wall surface at which the first communication port and the second communication port open;
• and
• a second wall surface configured to oppose the first wall surface with the heater located therebetween, and
• the second wall surface is inclined with respect to a center line of the first communication port such that the fluid is guided to the top-plate portion, the fluid being supplied from the first communication port to the fluid chamber.