Silicon steel core for transformers or choke coils

• US 20040178877A1
• Filed: 03/10/2003
• Published: 09/16/2004
• Est. Priority Date: 03/10/2003
• Status: Active Grant

• Current Assignee: Sun Trans Electronics Co., Ltd.
• Original Assignee: Jung Fong Electronics Co., Ltd.
• Inventors: Lin, Kuo-Liang
• Granted Patent: US 6,816,054 B2
• Time in Patent Office: Days
• US Class Current: 336/234
• CPC Class Codes: H01F 27/245 made from sheets, e.g. grain-oriented H01F27/26 takes precedence
• CPC Class Codes: H01F 3/14 Constrictions; Gaps, e.g. air-gaps in magnetic shunt paths H01F3/12
• CPC Class Codes: H01F 38/02 for non-linear operation

Abstract

An improved silicon steel core for transformers or choke coils includes at least one silicon steel sheet core which has at least two sets of silicon steel sheets that have respectively a magnetic flux section of a different length such that when two sets of the silicon steel sheet cores are coupled the magnetic flux sections form at least two gaps of different intervals. Thereby the silicone steel sheet sets of a smaller gap can provide adequate electric induction for the transformers or choke coils while the silicone steel sheet sets of a greater gap can reduce the saturated condition when the transformers or choke coils are in the high load condition so that the transformers or choke coils can reach a required electric induction without increasing the number of the silicon steel sheets or copper coils of the transformers or the choke coils, and prevent the transformers or choke coils from occurring saturation on the entire magnetic core in the high load.

Claims

1. An improved silicon steel core for transformers or choke coils comprising:

at least one silicon steel sheet core which has at least two sets of silicon steel sheets that have respectively a magnetic flux section of a different length such that when two sets of the silicon steel sheet core are coupled the magnetic flux sections form at least two gaps of different intervals to provide outputs of different powers.

2. The improved silicon steel core of claim 1, wherein each set of the silicon steel sheets consists of a plurality of silicon steel sheets.

3. The improved silicon steel core of claim 2, wherein the length of the magnetic flux sections is equal or unequal to selectively form a stepwise, a parabolic or an arched shape.

4. The improved silicon steel core of claim 1, wherein the gap formed between two magnetic flux sections of the two sets of the silicon steel sheet core has a spacer located therein, the spacer having a thickness for adjusting the gaps.

5. The improved silicon steel core of claim 4, wherein the spacer is selectively formed in a stepwise, a parabolic or an arched shape.

6. The improved silicon steel core of claim 1, wherein the silicon steel sheet core is selectively formed in U-shape, E-shape or I-shape.

7. The improved silicon steel core of claim 1, wherein the two sets of the silicon steel sheet core are formed in a same shape or different shapes.