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Inductor and method for production of an inductor core unit for an inductor

An inductive coil and coil technology, applied in the direction of transformer/inductor magnetic core, transformer/inductor components, inductors, etc., can solve the problem of enhancing sound, reducing the working duration of the inductive coil, and reducing the mechanical stability of the inductive coil core unit and other problems to achieve the effect of improving working duration, prolonging working duration and life, and low sound.

Inactive Publication Date: 2010-12-29
OSRAM GMBH
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  • Abstract
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Problems solved by technology

[0003] It is considered unfavorable here that due to temperature changes during operation of such an induction coil, cracks form in the filling material of the interspaces of the induction coil core unit or in the magnetizable material of the induction coil core, which furthermore Leads to a marked increase in vocalization in the frequency range audible to humans and a reduction in the mechanical stability of the inductor core unit
This significantly reduces the operating duration of the inductance coil with low phonation

Method used

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  • Inductor and method for production of an inductor core unit for an inductor
  • Inductor and method for production of an inductor core unit for an inductor
  • Inductor and method for production of an inductor core unit for an inductor

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Embodiment Construction

[0022] figure 1 A cross-sectional view of the side of an induction coil core unit 10 is shown, which can be used for an induction coil. The inductor core unit 10 comprises an inductor core 12 comprising two inductor core parts 12a, 12b which are E-shaped in cross section. The inductor coil core parts 12a, 12b are arranged around a double T-shaped coil body 14 in cross-section, which serves on the one hand to increase the strength of the inductor coil when the coil body is wound several times with an electrical conductor not shown. inductance. Between the inductor coil core parts 12a, 12b and the coil body 14 there is an air gap 16 which has different gap widths in different sections 16a-16c. For mechanical stabilization, a filler material 18 is introduced into the section 16 b of the air gap 16 , which forms the middle path of the inductor coil. The sections 16a, 16c of the air gap 16 which form the outer legs of the two inductor core parts 12a, 12b (which here have a thick...

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Abstract

The invention relates to an inductor having an electrical conductor for production of a magnetic field and having at least one inductor core unit (10) which is arranged in the area of the conductor and comprises an inductor core (12) composed of material which can be magnetized, as well as at least one air gap (16) with a filling material (18) being introduced into at least one part of the air gap (16) in order to provide mechanical robustness, with the filling material (18) being formed such that it has a coefficient of thermal expansion (alphaF), the value of which is within a range of +-70% of the value of the coefficient of thermal expansion (alphaD) of the material which can be magnetized and of which the inductor core (12) is composed. The invention also relates to a method for production of an inductor core unit (10) for an inductor.

Description

technical field [0001] The invention relates to an induction coil of the type stated in the preamble of claim 1 and a method for producing an induction coil core unit of an induction coil of the type specified in the preamble of claim 8 . Background technique [0002] Such inductive coils are known to those skilled in the art as inductive components in electronics and are used, in particular, to store and redistribute electrical energy. For this purpose, the inductor includes an electrical conductor for generating a magnetic field and at least one inductor core unit arranged in the region of the electrical conductor, which itself includes an inductor core made of a magnetizable material. In order to achieve a magnetic flux density of the inductor core that is not too high, the inductor core includes at least one air gap, due to which the magnetic saturation of the inductor core only occurs at significantly higher field strengths and avoids Excessive heating of induction coi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F3/14H01F27/26H01F37/00
CPCH01F37/00H01F27/263H01F3/14Y10T29/4902H01F27/24
Inventor 弗里德里希·维察尼安德烈亚斯·胡贝尔
Owner OSRAM GMBH
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