Heating coil, induction heating equipment and manufacturing method for heating coil

A manufacturing method and technology for heating coils, which are used in coil manufacturing, induction heating, coil devices, etc., can solve the problems of large axial temperature difference of workpieces, slow heating efficiency of workpieces, limited axial distribution length, etc., so as to increase the number of coil turns, The effect of improving the heating efficiency and reducing the radial temperature difference inside the workpiece

Inactive Publication Date: 2011-05-18
深圳市恒拓科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing heating coil is generally only one-stage, so the axial distribution length is limited, resulting in a large axial temperature difference of the workpiece
In addition, due to the small number of coil turns per unit area, the heating efficiency of the workpiece is slow

Method used

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  • Heating coil, induction heating equipment and manufacturing method for heating coil
  • Heating coil, induction heating equipment and manufacturing method for heating coil
  • Heating coil, induction heating equipment and manufacturing method for heating coil

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Embodiment Construction

[0053] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0054] Such as figure 1 and figure 2 As shown, a heating coil includes a power cord 1 for connecting a transformer or a frequency converter; a coil 2 for generating magnetic flux, and the coil is similar to a circle; the heating coil includes a plurality of coils, and the plurality of coils 2 is at least two layers, and the multiple coils are at least two cakes. If the multiple continuous coils are distributed along a cylindrical surface, then the multiple coils are one layer; if the multiple continuous coils are distributed along multiple cylindrical surfaces, then the multiple coils are multiple layers. If the plurality of continuous coils are distributed in one plane, then the plurality of coils are a pie; if the plurality of continuous coils are distributed in multiple planes, then the plurality of coils are multi-cake.

[0055] The mul...

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Abstract

The invention provides a heating coil, which comprises a power wire used for connecting transformers or frequency converters, and a plurality of coils which are used for generating magnetic flux, and have at least two layers and at least two pancakes. The heating coil has the advantages that the heating coil adopts multiple layers and pancakes of coils closely connected together, and improves thecoil turns of unit area, thereby reducing the radial temperature difference inside workpieces and simultaneously improving heating efficiency. Additionally, multiple sections of coils are connected in parallel / series, so that the overall length of the coils is increased, thereby enlarging axial heating areas of the workpieces.

Description

【Technical field】 [0001] The invention relates to the technical field of induction heating, in particular to a heating coil, induction heating equipment and a manufacturing method of the heating coil. 【Background technique】 [0002] Induction heating is a heat treatment process that uses an induced current to locally heat the workpiece. This heat treatment process is often used for surface quenching, partial annealing or tempering, and sometimes for overall quenching and tempering. [0003] The existing heating coil for induction heating is a single-layer or single-cake type, and there are certain gaps for insulation between the coils forming the single-layer or single-cake. When the current flows through the coil, a magnetic flux is formed around the coil, and the workpiece contained in the middle of the coil generates an induced current, and the electric energy of the induced current is converted into heat energy, which increases the temperature of the workpiece. Due to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B6/44H05B6/40H05B6/02H01F41/04C21D1/42
CPCY02P10/25
Inventor 沈国强
Owner 深圳市恒拓科技有限公司
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