Induction heating device
AssigneeAktiebolaget Skf
InventorsAlberto Javier Herrera Caballero, Jens Kammann
Life of this patent
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Abstract
An induction heating device having a control box, a magnetic core provided with at least one inductor fed with a current by a power electronics that is controlled by a control circuit, the power electronics and the control circuit being disposed in the control box, a removeable closing yoke for completing the magnetic circuit of the magnetic core, and a plurality of temperature sensors. A plurality of metal articles are simultaneously heated so as to each reach a target temperature and according to a heating cycle during which the temperatures sensors monitor the temperatures of the plurality of the metal articles so that each metal article is connected to a temperature sensor that is not connected to any other metal article.
Claims9
An induction heating device comprising:
- a control box,
- a magnetic core provided with at least one inductor fed with a current by a power electronics that is controlled by a control circuit, the power electronics and the control circuit being disposed in the control box, the magnetic core having a first arm, a second arm and a third arm, the arms forming an integral U or C shaped core section, the first arm having a first central axis extending the length of the first arm, the second arm having a second central axis extending the length of the second arm, and the third arm having a third central axis extending the length of the third arm,
- a removeable closing yoke for completing a magnetic circuit of the magnetic core, the removeable closing yoke having a fourth central axis extending the length of the yoke, the removeable closing yoke being positioned across the open arms of the U or C shaped core section to complete the magnetic circuit of the magnetic core, and
- a plurality of temperature sensors, wherein
- a plurality of metal articles are simultaneously heated so as to each reach a target temperature and according to a heating cycle during which the temperature sensors monitor the temperatures of the plurality of the metal articles so that each metal article is connected to a temperature sensor that is not connected to any other metal article, and wherein
- each of the plurality of metal articles are axially spaced from each other along any of the first, second, third, and fourth central axes when the metal articles are heated.
A method to heat up several metal articles with an induction heating device, the method comprising the following steps:
- providing an induction heating device having:
- a control box,
- a magnetic core provided with at least one inductor fed with a current by a power electronics that is controlled by a control circuit, the power electronics and the control circuit being disposed in the control box, the magnetic core having a first arm, a second arm and a third arm, the arms forming an integral U or C shaped core section, the first arm having a first central axis extending the length of the first arm, the second arm having a second central axis extending the length of the second arm, and the third arm having a third central axis extending the length of the third arm,
- a removeable closing yoke for completing a magnetic circuit of the magnetic core, and a plurality of temperature sensors, the removeable closing yoke having a fourth central axis extending the length of the yoke, the removeable closing yoke being positioned across the open arms of the U or C shaped core section to complete the magnetic circuit of the magnetic core, wherein
- a plurality of metal articles are simultaneously heated so as to each reach a target temperature and according to a heating cycle during which the temperature sensors monitor the temperatures of the plurality of the metal articles so that each metal article is connected to a temperature sensor that is not connected to any other metal article the method further comprising the steps of:
- a. placing each of the plurality metal articles around any of the arms of the magnetic core or the closing yoke, each of the plurality of metal articles being axially spaced from each other along any of the first, second, third, and fourth central axes;
- b. connecting a unique temperature sensor to each metal article,
- c. setting for each temperature sensor the target temperature to be reached for each metal article;
- e. starting the heating cycle by a manual action consisting of pressing a button;
- f. heating up each of the several metal articles simultaneously.
Dependencies are inferred from the claim text.