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Inductance ballast iron-core

A magnetic ballast and iron core technology, which is applied in the direction of inductors, transformer/inductor magnetic cores, circuits, etc., can solve problems such as poor electrical performance of magnetic ballasts, safety accidents, and large electromagnetic noise

Inactive Publication Date: 2009-09-23
叶志伟 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inductive ballasts made of such an iron core, in long-term operation, due to the effects of electromagnetic force and operating temperature, the gap between the non-ferromagnetic material sheet filled in the magnetic gap of the iron core and the magnetic gap of the iron core There will be peeling between the end faces, so a lot of electromagnetic noise will be generated, and the electrical performance of the magnetic ballast will also deteriorate. In severe cases, the ballast will be damaged or even a safety accident will occur.

Method used

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Examples

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Effect test

Embodiment 1

[0015] see Figure 5 As shown, a magnetic ballast magnetic gap processing technology, taking the double magnetic gap circular iron core as an example, the processing procedure is as follows:

[0016] (1) A ring-shaped iron core 3 is wound into a circular iron core 3 by oriented silicon steel sheets along the paramagnetic direction, and then shaped by dipping in paint and drying.

[0017] (2) Manufacture the magnetic gap: along the direction of the central axis of the ring, cut the ring-shaped iron core 3 into two half-rings 3-1, 3-2 by cutting method, and form two end faces at each cutting edge 3-1-1 and 3-2-1.

[0018] (3) Embedding magnetic gap gasket 4: use two glass fiber epoxy boards 4 with a preset thickness, respectively embedded in the magnetic gap formed by the two half-rings 3-1, 3-2, and clamp them with a clamp , forming a ring-shaped magnetic ballast core with two symmetrically arranged magnetic gaps.

[0019] (4) Stainless steel argon arc welding: The stainless...

Embodiment 2

[0024] Example 2: The iron core of the inductance ballast for the 400W metal halide lamp and the 250W high pressure sodium lamp uses two magnetic gaps, and each magnetic gap uses a stainless steel solder joint with a width of 5 mm and a depth of 2 mm.

Embodiment 3

[0025] Example 3: The iron core of an inductive ballast for a 36W fluorescent lamp uses two magnetic gaps, and each magnetic gap uses a stainless steel solder joint with a width of 3 mm and a depth of 1 mm.

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Abstract

The invention discloses an inductance ballast iron core, which belongs to the technical field of inductance ballast iron core manufacturing. The inductance ballast manufactured by adopting the technology of the invention is safe and reliable in long-term operation, has stable electrical performance, and does not generate electromagnetic noise caused by the magnetic gap of the iron core. To this end, a solder joint of non-ferromagnetic material is welded between two opposing core end faces around the magnetic gap and forms an alloy connection.

Description

technical field [0001] The invention relates to the technical field of inductive ballast iron core manufacturing, in particular to an inductive ballast iron core related to a magnetic gap processing method. Background technique [0002] The magnetic ballast used in lighting appliances is actually a coil of iron core with a magnetic gap in a closed magnetic circuit. At present, among the magnetic ballasts with a relatively novel structure, the iron cores are made into various shapes to suit various applications, such as annular iron core 1, C-shaped iron core 2, O-shaped iron core 3, etc., see figure 1 -4 shown. But regardless of the shape, these inductive ballasts are made of oriented silicon steel sheets and wound along the paramagnetic direction, and then cut one or more magnetic gaps in the closed iron core to use Non-ferromagnetic material sheets and adhesives are used to fill the magnetic gap and bonded to the smooth core end faces on both sides of the magnetic gap. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/24H01F38/10
Inventor 叶志伟叶志祥
Owner 叶志伟
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