ELECTRIC HEATER DEVICE

• US 20190309991A1
• Filed: 04/02/2019
• Published: 10/10/2019
• Est. Priority Date: 04/10/2018
• Status: Abandoned Application

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: FUKUDA, Takayuki
• Application Number:
  US16/372,458
• Publication Number:
  US 20190309991A1
• Time in Patent Office: Days
• CPC Class Codes: F24H 1/121 using electric energy supply
• CPC Class Codes: F24H 15/174 Supplying heated water with desired temperature or desired range of temperature
• CPC Class Codes: F24H 15/20 characterised by control inputs
• CPC Class Codes: F24H 15/215 before heating
• CPC Class Codes: F24H 15/219 after heating
• CPC Class Codes: F24H 15/238 Flow rate
• CPC Class Codes: F24H 15/269 Time, e.g. hour or date
• CPC Class Codes: F24H 15/37 of electric heaters
• CPC Class Codes: F24H 15/407 using electrical switching, e.g. TRIAC
• CPC Class Codes: F24H 3/085 The tubes containing an electrically heated intermediate fluid, e.g. water
• CPC Class Codes: F24H 9/1818 Arrangement or mounting of electric heating means
• CPC Class Codes: F24H 9/2028 Continuous-flow heaters
• CPC Class Codes: H05B 2203/023 Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system
• CPC Class Codes: H05B 3/50 heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins

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.

Claims

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.