Electric heater device

Abstract

An electric heater device includes: a plurality of pipes stacked with each other through a predetermined clearance, a fluid flowing inside the plurality of pipes; a heating element that emits heat by being energized; and an electronic component module including an electronic component different from the heating element. The heating element and the electronic component module are disposed in the clearance between the plurality of pipes.

What is claimed is: 
     
         1 . An electric heater device comprising:
 a plurality of pipes stacked with each other through a predetermined clearance, a fluid flowing inside the plurality of pipes;   a heating element that emits heat by being energized; and   an electronic component module including an electronic component different from the heating element, wherein the heating element and the electronic component module are disposed in the clearance between the plurality of pipes.   
     
     
         2 . The electric heater device according to  claim 1 , wherein the electronic component includes a switching element of a driving circuit for the heating element. 
     
     
         3 . The electric heater device according to  claim 1 , wherein the electronic component includes a temperature sensor that detects temperature. 
     
     
         4 . The electric heater device according to  claim 3 , wherein
 the electronic component module and the pipe are in contact with each other at a first contact portion that is the most upstream in a flow direction of the fluid,   the electronic component module and the pipe are in contact with each other at a second contact portion that is the most downstream in the flow direction of the fluid, and   the electronic component module has a first temperature sensor disposed in the first contact portion and a second temperature sensor disposed in the second contact portion as the temperature sensor.   
     
     
         5 . The electric heater device according to  claim 3 , wherein
 the plurality of pipes includes a first pipe disposed to be in contact with only the electronic component module; and a second pipe positioned adjacent to the first pipe to be in contact with the electronic component module and the heating element,   the electronic component module has
 a first contact portion in contact with the first pipe that is the most upstream side in a flow direction of the fluid flowing through the first pipe, and 
 a second contact portion in contact with the second pipe that is the most downstream side in a flow direction of the fluid flowing through the second pipe, and 
   the electronic component module has a first temperature sensor disposed in the first contact portion and a second temperature sensor disposed in the second contact portion as the temperature sensor.   
     
     
         6 . The electric heater device according to  claim 3 , wherein
 the temperature sensor detects one of an inflow temperature which is a temperature of the fluid flowing into a pipe stacked body defined by the plurality of pipes and an outflow temperature which is a temperature of the fluid flowing out of the pipe stacked body, and   the electric heater device further comprises a calculator that calculates the other of the inflow temperature and the outflow temperature based on the temperature of the fluid detected by the temperature sensor.   
     
     
         7 . The electric heater device according to  claim 6 , wherein
 the calculator calculates the other of the inflow temperature and the outflow temperature based on a heat amount generated by the heating element and a flow rate of the fluid flowing through the pipe stacked body.   
     
     
         8 . The electric heater device according to  claim 6 , wherein
 the electronic component further includes a switching element of a driving circuit for the heating element, and   the calculator calculates the other of the inflow temperature and the outflow temperature based on a heat amount generated by the heating element, a flow rate of the fluid flowing through the pipe stacked body, and a heat amount generated by the switching element.