Low-frequency induction heater

Details Low-frequency induction heater Low-frequency induction heater

H - Electricity

05

B

H05B 6/12 (2006.01) H05B 6/02 (2006.01)

Patent

CA 2056851

In a low-frequency induction heater comprising a primary side coil having a core and a secondary side conductive hollow cylindrical member surrounding the primary side coil, it is sought to improve the Joule heat generation efficiency and solve problems peculiar to composite materials such as thermal deformation, electrolytic corrosion and difficulty of manufacture by forming the conductive hollow cylindrical member using a sole stainless steel material having a thickness ranging from 2 mm to 6 mm. In a preferred embodiment, a coil 2 is wound around a rod-like core 1, which is in turn surrounded by a conductive hollow cylindrical member 3 made of a sole stainless steel material having a thickness ranging from 2 mm to 6 mm. When an AC current passes through the coil 2, an alternating magnetic field is set up in the axial direction of the coil 2, causing an inducted current in the conductive hollow cylindrical member 3. Joule heat is thus generated in the member 3 due to the electric resistance thereof.

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