JP3119580U - Power factor improving device and iron core of power factor improving device - Google Patents

Abstract

Provided is a power factor improving device that reduces waste of materials, suppresses the generation of defective products, provides an excellent heat dissipation effect, prevents occurrence of abnormal noise and interference of low-frequency ripples, and an iron core used for the device .
A long-sized silicon steel sheet or amorphous magnetic sheet having a predetermined width is wound by curving a corner portion, and an annular iron core pattern is formed by cutting along a diameter. The outer periphery of the iron core formed by joining two symmetrical core members 32 so that their cut surfaces face each other is covered with the coil 20.
[Selection] Figure 4

Description

  The present invention relates to a power factor corrector and an iron core of the power factor corrector.

  The power supply used in electrical equipment such as personal computers and servers usually uses an inductor or the like to control and adjust the input time and waveform of AC current so that it matches the voltage waveform of DC current as much as possible. , Improving the energy use efficiency of electrical equipment. This is called power factor correction (PFC).

A conventional coil type power factor correction apparatus is shown in FIG. This type of power factor correction apparatus is formed by wrapping a UU-type iron core 10 with a coil 20, and converts electricity and magnetism to each other to form a magnetic field around a conducting wire through which a current flows.
When the coils around which the conductive wires are wound are brought close to each other and a current flows, magnetic energy is generated in the coils. When the current decreases, the magnetic energy in the coil tries to prevent the current from changing.
Therefore, the coil type power factor correction device filters the noise in the current, stabilizes the current in the circuit to prevent the interference of electromagnetic waves, and preserves and releases the electrical energy in the dew in the form of a magnetic field. The current can be adjusted. For this reason, it is widely applied to a power supply device, a monitor device, an exchange, a motherboard, a scanner, a telephone, a modem, and the like.

A UU-type iron core 10 used in a conventional coil-type power factor correction apparatus combines two U-shaped steel members 11 formed by laminating U-shaped silicon steel plates 111 in the thickness direction, and each U-shaped steel member 11 is a covering member. Inserted inside, the tips are in contact with each other.
However, since the silicon steel plates 111 constituting the U-shaped steel member 11 are respectively press-formed, waste materials of 30% to 60% are generated in the manufacturing process, and the materials are wasted and the cost is increased.
In addition, the coil member is damaged due to the quality of the press-formed silicon steel plate 111 during assembly, and there is a problem that the insulation state is affected and a defective product is easily born.

  In addition, since the coil type power factor correction device is a highly sensitive magnetic device, “copper loss” and “iron loss” often occur. If tight coupling is difficult, magnetic resistance and interlayer capacitance are generated, and in the situation where the magnetic force is lost rapidly, if the magnetic path between the silicon steel plates 111 is incomplete, the heat dissipation becomes slow, and the heat dissipation efficiency of the electrical equipment It also has an adverse effect.

  The problem to be solved by the present invention is to reduce the waste of materials, suppress the generation of defective products, obtain an excellent heat dissipation effect, and prevent the occurrence of abnormal noise and interference of low-frequency ripple and An object of the present invention is to provide a power factor improving apparatus and an iron core for the power factor improving apparatus used for this.

The power factor improvement device of the present invention cuts an annular iron core prototype along a diameter by winding a long silicon steel sheet or amorphous magnetic sheet with a predetermined width so that the corners are curved and overlapping in a radial direction. The outer periphery of the iron core formed by joining the two symmetrical core materials formed so as to face each other is covered with a coil.
In addition, the iron core of the power factor improving device of the present invention is an annular iron core prototype in which a long silicon steel sheet or amorphous magnetic sheet having a predetermined width is wound so that the corners are curved and overlapped in the radial direction. Two symmetrical core materials formed by cutting along the diameter are joined so that their cut surfaces face each other.

According to the present invention, since the iron core is formed from the annular iron core prototype around which the sheet is wound, it is possible to reduce the cost and reduce the waste of materials as compared with the case where the press-formed plates are laminated. In addition, the layers are tightly coupled and the generation of defective products can be reduced. Moreover, since two core materials are inserted and joined to a coil, an assembly is easy.
Furthermore, the crystal structure of the iron core is non-directional and has no sharp corners, so magnetic leakage is unlikely to occur, and magnetic leakage causes abnormal noise and low-frequency ripple interference in the outer shell and peripheral members of electrical equipment. Can be prevented.
In addition, the coil that is the heat generating part is arranged on the outer periphery of the iron core, and the iron core is an annular shape with no corners, so the heat dissipation area is large and the air flows easily. Heat can be removed and a high heat dissipation function can be obtained.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. In addition, the same code | symbol is attached | subjected to the member which is common in a prior art example.
As shown in FIGS. 2 and 4, the power factor correction apparatus of the present invention is formed by wrapping the outer periphery of an iron core 30 with a coil 20.
As shown in FIG. 3, the iron core 30 is formed by using an annular iron core prototype 31 in which long sheets 311 having a predetermined width are wound so as to overlap in the radial direction and the corners are curved. To do. The sheet 311 is a silicon steel sheet or an amorphous magnetic sheet.

As shown in FIG. 4, the annular core prototype 31 is cut along its diameter (short axis in the example shown in the figure) to form two symmetrical core members 32.
Then, the core members 32 are inserted into the opening portions at both ends of the two coils 20 arranged in parallel adjacent to each other so that the core members 32 straddle the two coils 20 from the cut surfaces. Join each other with the cut surfaces facing each other.
Thereby, while forming the cyclic | annular iron core 30 formed by connecting the two core materials 32, the outer periphery of the iron core 30 is coat | covered with the coil 20. FIG.

  In this manner, the sheet 311 is wound to form the annular core prototype 31, which is cut into the core material 32, and the two core materials 32 are inserted into the coil 20, and then joined again to form the iron core 30. As a result, the stacked layers are tightly coupled, and there is no dimensional deviation in the joint surface between the core members 32, so that generation of defective products and waste of materials can be suppressed.

The perspective view of the conventional power factor improvement apparatus. The perspective view of the power factor improvement apparatus which shows the Example of this invention. The perspective view of the cyclic | annular iron core original pattern which concerns on the Example of this invention. The disassembled perspective view of the power factor improvement apparatus which shows the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 UU type iron core 11 U type steel member 111 Silicon steel plate 20 Coil 30 Iron core 31 Annular iron core prototype 311 Sheet 32 Core material

Claims (2)

  Two symmetric silicon steel sheets or amorphous magnetic sheets with a predetermined width are wound in such a way that the corners are curved, and two annular symmetrical cores are formed by cutting along the diameter. A power factor improving apparatus characterized in that the outer periphery of an iron core formed by joining core materials so that their cut surfaces face each other is covered with a coil. Two symmetric silicon steel sheets or amorphous magnetic sheets with a predetermined width are wound in such a way that the corners are curved, and two annular symmetrical cores are formed by cutting along the diameter. An iron core of a power factor correction device formed by joining core materials so that their cut surfaces face each other.

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