Heating device
AssigneeMahle International GmbH
InventorsChristoph Beerens, Antonio Menonna, Almir Zahirovic
Life of this patent
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Abstract
A heating device for heating a hollow component may include at least one inner induction coil and at least one outer induction coil, each configured to be heated. At least one element may be configured to influence a magnetic field formed between the inner and the outer induction coil during the operation of the heating device. The element may be arranged between the inner and the outer induction coils. Regions of the hollow component may be thinner and the thinner regions may be configured to heat more quickly than the remaining thicker regions. The thinner and thicker regions of the component may allow even heating of the component to be achieved.
Claims20
A heating device for heating a hollow component, comprising:
- at least one inner induction coil penetrating the component and configured to be heated, at least one outer induction coil surrounding the component and configured to be heated, wherein the at least one inner induction coil and the at least one outer induction coil each include a circular multi-turn coil arranged coaxially with the component, and wherein the component includes an asymmetric heat profile including at least a first heatable region and a second heatable region, and wherein the first heatable region heats more quickly than the second heatable region,
- at least one element disposed at least one of in a first position corresponding to the first heatable region and in a second position corresponding to the second heatable region, wherein the at least one element respectively is configured to influence a magnetic field forming between the inner and the outer induction coil during the operation of the heating device,
- wherein the at least one element in the first position is arranged between the inner and the outer induction coils and weakens the magnetic field in the first heatable region, and
- the at least one element in the second position is arranged at least one of within the inner induction coil and exterior to the outer coil with respect to the component and is configured to intensify the magnetic field in the second heatable region, wherein the at least one element facilitates even heating of the asymmetric heat profile of the component in response to being in the at least one of the first position and the second position during the operation of the heating device.
A method for heating a hollow component having a non-circular geometry, comprising:
- threading the component onto an inner induction coil surrounded by an outer induction coil, wherein the inner induction coil and the outer induction coil each include a circular multi-turn coil, and wherein the circular multi-turn coil of the inner induction coil is arranged in the component,
- positioning at least one element in a region of a base circle of the component between at least one of the induction coils and the component to influence a magnetic field being generated during the operation of a heating device, wherein the base circle has a first thickness less than a second thickness spaced away from the base circle, and
- energizing the inner induction coil and the outer induction coil to generate the magnetic field, wherein the magnetic field in the region of the base circle is weakened via the at least one element a sufficient amount to facilitate even heating of the component.
A method for heating a cam, comprising:
- threading the cam onto an inner induction coil surrounded by an outer induction coil, wherein the inner induction coil and the outer induction coil each include a circular multi-turn coil arranged coaxially to the cam, and wherein the circular multi-turn coil of the inner induction coil is arranged in the cam, and
- positioning at least one element in a region of a cam elevation within the inner induction coil for influencing a magnetic field being generated during the operation of a heating device, wherein the cam elevation has a first thickness greater than a second thickness spaced away from the cam elevation, energizing the inner and outer induction coils to generate the magnetic field, wherein the magnetic field in the region of the cam elevation is intensified via the at least one element and facilitates even heating of the cam.
Dependencies are inferred from the claim text.