Modular induction fluid heater

Patent metadata

Field	Value
Publication number	US-9924565-B2
Application number	US-201414518131-A
Country	US
Kind code	B2
Filing date	Oct 20, 2014
Priority date	Apr 20, 2012
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

A device for electrically heating a fluid, in particular for use in an electrically operated motor vehicle, comprising an induction coil, which is integrated in an oscillating circuit and produces an alternating magnetic field, and at least one first inductor, which is positioned within the alternating magnetic field. The inductor can be arranged inside a module, through which a fluid to be heated can flow, and the induction coil is arranged outside the module.

First claim

What is claimed is:

1. A device for electrically heating a fluid for use in an electrically operated motor vehicle, the device comprising:
an induction coil that generates an alternating magnetic field; and
at least one inductor that is heatable by the alternating magnetic field, the inductor being arranged within the alternating magnetic field, wherein the inductor is arranged in an interior of a module that is adapted to have a fluid to be heated flow therethrough,
wherein a bottom housing part and a top housing part of the module each have a partition wall inside that runs centrally and divides the top housing part or the bottom housing part in each case into a first flow channel and a second flow channel, and wherein the first flow channel of the top housing part or of the bottom housing part is in fluid communication with an inlet or outlet of the module and the second flow channel of the top housing part is in fluid communication with the second flow channel of the bottom housing part,
wherein the induction coil is arranged outside of the module,
wherein the inductor seals fluid-tight with walls of the first flow channel and walls of the second flow channel of the top housing part or of the bottom housing part and the inductor divides an interior of the module into a top and bottom region,
wherein the first flow channel of the bottom housing part is in fluid communication via a first connection with the second flow channel of the bottom housing part, and the first flow channel of the top housing part is in fluid communication via a second connection with the second flow channel of the top housing part, and
wherein the first connection and the second connection each include an enclosed channel that extends outside of the module to connect the first flow channels to the second flow channels of the top and bottom housing parts.

2. The device according to claim 1 , wherein the induction coil is electrically integrated into an oscillating circuit.

3. The device according to claim 1 , wherein the inductor, to generate a turbulent surround-flow and/or through-flow, has surface elements, holes, and/or punches.

4. The device according to claim 1 , wherein the inductor, to generate a turbulent surround-flow, has a suitably shaped surface by embossing, beading, primary shaping and/or cutting deformation.

5. The device according to claim 1 , wherein the module is dividable.

6. The device according to claim 1 , wherein the inductor has an opening through which the second flow channel of the top region of the module is in fluid communication with the second flow channel of the bottom region of the module.

7. The device according to claim 1 , wherein a flow path of the fluid runs via a connector into the module, in the first flow channel of the bottom housing part, in the second flow channel of the bottom housing part through an opening of the inductor, in the second flow channel of the top housing part, in the first flow channel of the top housing part, and finally through a connector out of the module or in an opposite direction.

8. The device according to claim 1 , wherein at least one turbulence insert is arranged in the module with the inductor.

9. An assembly group having at least one first module and at least one second module, each according to the module of claim 1 , wherein one of the modules is arranged above and one of the modules below the induction coil.

10. The assembly group according to claim 9 , wherein a flow of the fluid passes through the individual modules in series or parallel.

Assignees

• Mahle Int Gmbh
• Behr Hella Thermocontrol Gmbh

Inventors

• Kohl Michael
• Pankratz Harri
• Trapp Ralph

Classifications

• B60H1/2221

  arrangements of electric heaters for heating an intermediate liquid (B60H1/034 takes precedence) · CPC title

• F24H9/0015

  in water channels · CPC title

• H05B6/10 Primary

  Induction heating apparatus, other than furnaces, for specific applications · CPC title

• F24H2250/08

  Induction · CPC title

• H05B6/108

  for heating a fluid · CPC title