Heating device

Patent metadata

Field	Value
Publication number	US-9848464-B2
Application number	US-201313948603-A
Country	US
Kind code	B2
Filing date	Jul 23, 2013
Priority date	Jul 24, 2012
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

The application relates to an induction heating device having a housing and a fluid duct. The fluid duct is arranged in the housing and has a fluid inlet and a fluid outlet. Inside the housing is an induction element which generates an alternating magnetic field and which is separated from the fluid duct in a sealed manner by at least one wall. The device also includes at least one metallic areal heating element arranged in the fluid duct which can be heated by the alternating magnetic field.

First claim

The invention claimed is:

1. A heating device comprising
a housing and a fluid duct, wherein the fluid duct is arranged in said housing and comprises a fluid inlet and a fluid outlet,
an induction element which generates an alternating magnetic field, wherein the induction element is arranged in the housing and is separated from the fluid duct in a sealed manner by at least one wall, wherein the induction element is a hollow cylindrical element,
at least two metallic areal heating elements, wherein the areal heating elements are heated by the alternating magnetic field, wherein the areal heating elements are arranged in the fluid duct, wherein the heating elements are hollow cylindrical elements, wherein at least one areal heating element is arranged radially outside the induction element and at least one areal heating element is arranged radially inside the induction element, wherein a fluid flows over and contacts both a radially outer side and a radially inner side of the at least one areal heating element arranged radially outside the induction element, and wherein the fluid flows over and contacts both a radially outer side and a radially inner side of the at least one areal heating element arranged radially inside the induction element,
wherein the wall consists essentially of a material which is transparent to magnetic fields, wherein the fluid flows over and contacts the at least one wall on both sides.

2. The heating device according to claim 1 ,
wherein the flow direction of the fluid on one side of the at least one areal heating element arranged radially outside the induction element is opposite to the flow direction on the other side of the at least one areal heating element arranged radially outside the induction element,
wherein the flow direction of the fluid on one side of the at least one areal heating element arranged radially inside the induction element is opposite to the flow direction on the other side of the at least one areal heating element arranged radially inside the induction element.

3. The heating device according to claim 1 , wherein the induction element is a hollow cylindrical coil.

4. The heating device according to claim 1 , wherein a control unit is provided for controlling the induction element.

5. The heating device according to claim 4 , wherein the control unit is connected to or integrated into the housing.

6. The heating device according to claim 1 , wherein the housing is composed of a material which absorbs magnetic fields or which is non-transparent to alternating magnetic fields.

7. The heating device of claim 1 , wherein the at least one areal heating element arranged radially outside the induction element is arranged entirely radially outside the induction element, and wherein the at least one areal heating element arranged radially inside the induction element is arranged entirely radially inside the induction element.

8. A heating device comprising:
a housing and a fluid duct, wherein the fluid duct is arranged in said housing and comprises a fluid inlet and a fluid outlet,
an induction element which generates an alternating magnetic field, wherein the induction element is arranged in the housing and is separated from the fluid duct in a sealed manner by at least one wall, wherein the induction element is a substantially planar element,
at least two metallic areal heating elements, wherein the areal heating elements are heated by the alternating magnetic field, wherein the areal heating elements are arranged in the fluid duct, wherein the areal heating elements are arranged adjacent on both sides to the induction element, wherein the heating elements are substantially planar elements, and wherein a fluid flows over and contacts both sides of the a first areal heating element of the areal heating elements, wherein the fluid flows over and contacts both sides of the a second areal heating element of the areal heating elements,
wherein the wall consists essentially of a material which is transparent to magnetic fields, wherein the fluid flows over and contacts the at least one wall on both sides.

9. The heating device according to claim 8 ,
wherein the flow direction of the fluid on one side of the first areal heating element is opposite to the flow direction on the other side of the first areal heating element,
wherein the flow direction of the fluid on one side of the second areal heating element is opposite to the flow direction on the other side of the second areal heating element.

10. The heating device according to claim 8 , wherein the induction element is a substantially planar areal coil.

11. The heating device according to claim 8 , wherein a control unit is provided for controlling the induction element.

12. The heating device according to claim 11 , wherein the control unit is connected to or integrated into the housing.

13. The heating device according to claim 8 , wherein the housing is composed of a material which absorbs magnetic fields or which is non-transparent to alternating magnetic fields.

Assignees

• Behr Gmbh & Co Kg
• Behr France Rouffach Sas
• Behr-Hella Thermocontrol Gmbh
• Mahle Int Gmbh

Inventors

• Kohl Michael
• Krumbach Karl-Gerd
• Lochmahr Karl
• Seewald Wolfgang
• Schunck Olivier
• Nagel Dirk
• Heeper Lars
• Stallein Matthias
• Steinkamp Michael
• Marquas Karsten
• Dicke Volker

Classifications

• B60H1/2221

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

• B60H2001/2271

  Heat exchangers, burners, ignition devices · CPC title

• F24H1/101

  using electric energy supply · CPC title

• F24D2200/08

  Electric heater · CPC title

• H05B6/108 Primary

  for heating a fluid · CPC title