KR100977875B1 - Generation heat wire shielding electric field and magnetic field for householde electric appliance - Google Patents

Abstract

PURPOSE: A heating line for an electric device is provided to prevent the generation of a fire due to of the fire due to an electric leakage by forming a polyvinylchloride layer on the outer surface of a thin film layer. CONSTITUTION: A copper wire core(50) is made of a copper wire and a second insulation layer. The second insulation layer is formed in the outer surface of the copper wire. A heating line(60) generates a magnetic field which has the phase difference of 180° from the magnetic field which is generated from the copper wire. A grounding line bypasses an electric field to the ground. The grounding line is made of a plurality of iron wires or copper wires. A thin film layer(80) is electrically connected to the grounding line in order to shield the leakage of an electric field. A polyvinylchloride layer(90) is formed in the outer surface of the thin film layer.

Description

Heating wire shielding electric and magnetic fields for electric appliances {GENERATION HEAT WIRE SHIELDING ELECTRIC FIELD AND MAGNETIC FIELD FOR HOUSEHOLDE ELECTRIC APPLIANCE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to heating wires for shielding electric and magnetic fields for electric appliances, and in particular, can improve productivity, shield electric and magnetic fields (also referred to as electric waves and magnetic waves), and due to overheating of electric appliances. The present invention relates to a heating wire for shielding electric and magnetic fields for electric appliances that can prevent the occurrence of fire.

As a non-magnetic heating wire widely used in the prior art, it is disclosed in Korean Utility Model Registration No. 20-0168362 (Registration Date; November 09, 1999), which the applicant has applied for and registered.

The magnetic field heating wire disclosed in the Republic of Korea Utility Model Registration No. 20-0168362 is extruded by Teflon to have a plurality of strands of twisted copper wire 10 and a specific dielectric breakdown voltage, as shown in FIG. The first teflon layer 12 covering the copper wire 10 and the second teflon layer extruded with teflon on the outer circumferential surface of the first teflon layer 12 to increase the dielectric breakdown voltage of the first teflon layer 12. (14), and a heat generator (16) wound in a spiral shape on the second Teflon layer (14) to absorb heat and to release heat from the magnetic field emitted from the copper wire (10) when power is applied; While fixing the position of the heating element 16, and asbestos braided layer 18 braided asbestos on the heating element 16 to block a part of the heat generated from the heating element 16, and the asbestos braided layer ( 18) into an insulating layer 20 to be insulated by extrusion with silicon rubber Consists of.

In the above description, the copper wire 10 is a twisted wire twisted from 5 to 10 strands having a diameter of 0.2 mm to 0.5 mm and plated with tin on the outer circumferential surface thereof, and the asbestos braided layer 18 uses glass yarn (glass fiber). The insulating layer 20 is made of silicone rubber.

However, the conventional magnetic field-less heating wire configured as described above is extruded and made of teflon, so that the first and second teflon layers 12 and 14 are coated on the copper wire 10. 절연 An insulation breakdown voltage of 2000 V or more is generated, and the second Teflon layer 14 generates an insulation breakdown voltage of AC 10 kPa and 2000 V or more, and not only can withstand a total voltage of approximately AC 10 kPa and 4000 V or more, but also the second Teflon. The asbestos braided layer 18 is braided with glass yarn (glass fiber) on the heat generating element 16 wound in a spiral shape on the layer 14, and the heat generating element 16 made of nichrome wire by this asbestos braided layer 18 is formed. ) Is fixed.

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Accordingly, when the silicone rubber is extruded onto the heating element 16 and coated with an insulator, the heating element 16 wound on the second Teflon layer 14 in a spiral shape by the extrusion force is pushed to one side. Therefore, the production of non-defective heating wire can be prevented from occurring and the production yield can be improved, and the heat generated from the heating element 16 is transferred to the insulating layer 20 through the asbestos braided layer 18. Heat is transferred indirectly so that the insulating layer 20

It can be prevented from being deteriorated by heat, which can prolong the life of the magnetic field-free wire, and the heating element 16 is wound in a spiral shape on the second Teflon layer 14, so that the copper wire 10 and Even when power is applied between the heating elements 16, the magnetic field emitted from the copper wire 10 is absorbed by the heating element 16 so that the magnetic field does not leak to the outside.

However, the conventional magnetic field-free heating wire configured as described above has a problem of shielding the magnetic field, but cannot shield the electric field, and includes an expensive first and second teflon layers, and further includes an asbestos braiding layer and an insulating layer. In addition, there is a problem that the manufacturing cost can not be reduced, and when the heating wire is excessively heated, a dummyster connected in series to the heating wire is short-circuited to prevent the occurrence of fire by blocking the flow of current to the heating wire. In addition, in order to prevent a fire when the dummyster breaks down, a plurality of temperature detecting elements are disposed around the heating wire, and the temperature of the heat radiated from the heating wire is detected and output to a controller (not shown) to control the current from flowing in the heating wire. There are many ways to reduce manufacturing costs, such as electric mat stone beds that use heating wires. There was a problem.

The present invention is to solve the problems of the prior art as described above, an object of the present invention is to provide a heating wire for shielding the electric field and magnetic field for electric appliances that can improve the productivity.

Another object of the present invention is to provide a heating wire for shielding an electric field and a magnetic field for an electric appliance that can shield the electric and magnetic fields.

Still another object of the present invention is to provide a heating wire that shields an electric field and a magnetic field for an electric appliance that can prevent the occurrence of a fire due to overheating of the electric appliance.

Still another object of the present invention is to provide a heating wire for shielding an electric field and a magnetic field for an electric appliance, which can reduce manufacturing costs.

The present invention has been made to achieve the above object, the heating wire for shielding the electric field and magnetic field for the electric appliance of the present invention by extruding the insulator on the outer circumferential surface of the copper wire, the second insulating layer is molded and the copper wire core is applied power; Generates a magnetic field of 180 degrees out of phase with the magnetic field generated in the copper core to shield the magnetic field generated in the copper core when power is applied to the copper wire of the copper core, and generates a heating wire and an electric field to ground. A ground wire made of a plurality of strands of wire or copper wire to bypass, and the copper core, the heating wire and the ground wire is wound on the outer peripheral surface twisted to bypass the electric field passing through the heating wire to the ground to shield the leakage of the electric field electrical And a thin film layer made of a conductor, the copper core and the foot A PVC (Polyvinyl Chloride) line, to cover the ground line and the outer peripheral surface of the thin film layer so as to block the leakage current and isolation is characterized in that included in the PVC layer by extrusion molding.

According to the heating wire for shielding the electric and magnetic fields for electric appliances of the present invention, the productivity can be improved, the electric and magnetic fields can be shielded, and the excellent effect of preventing the occurrence of fire due to overheating of the electric appliances can be prevented. There is.

1 is a perspective view schematically showing a conventional magnetic field-free heating wire.
2 is a perspective view schematically showing a heating line for shielding an electric field and a magnetic field for an electric appliance according to an embodiment of the present invention.
3 is an enlarged perspective view of the copper wire core in FIG. 2.
4 is an enlarged cross-sectional view of a heating line in FIG. 2.

A heating line for shielding a magnetic field for an electric appliance according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 to 4, the heating wire shielding the electric field and the magnetic field for the electric appliance according to the embodiment of the present invention is formed by extruding an insulator on the outer circumferential surface of the copper wire 51 to form the second insulating layer 52. The copper core 50 to which power is applied, and the copper core 50 to shield the magnetic field generated in the copper core 50 when power is applied to the copper wire 51 of the copper core 50. A heating wire 60 for generating a magnetic field and a magnetic field having a phase difference of 180 degrees, and a ground wire 70 made of a plurality of strands (2 or 3 strands) of iron or copper wire to bypass the electric field to ground, The copper wire core 50, the heating wire 60, and the ground wire 70 are wound around the twisted outer circumferential surface and bypass the electric field passing through the heating wire 60 to ground to shield the leakage of the electric field to the ground wire 70. Electrically connected, conductor PVC extruded PVC to cover the outer circumferential surfaces of the thin film layer 80 and the copper core 50, the heating wire 60, the ground wire 70 and the thin film layer 80 to block the current leakage and insulate Layer 90 is included.

The heating wire 60 is wound around a plurality of strands of the polyester chamber 61 and the outer peripheral surface of the polyester chamber 61 in a spiral shape when the current flows in the copper wire 51 of the copper core 50 The copper-clad steel wire 62 spirally wound on the outer circumferential surface of the polyester chamber 61 so as to shield the magnetic field generated in the direction perpendicular to the flow direction of the current, the polyester chamber 61 and the copper-coated steel wire ( It consists of the 1st insulating layer 63 extruded and coated by the insulator on the outer peripheral surface of 62).

The heating wire 60 is a wire having a PTC (Positive Temperature Coefficient) temperature coefficient, the resistance of which increases when the current flows to a certain temperature and uses a single core or a core, and the ground wire 70 uses an iron core or pure copper wire. It is desirable to.

One side of the copper wire 51 constituting the copper wire core 50 and one side of the heating wire 60 are electrically connected.

The thin film layer 80 may be coated using any one selected from an aluminum thin film or a copper thin film, but most preferably, the thin film layer 80 is coated with an aluminum thin film.

The first insulator layer 63 and the second insulator layer 52 are preferably extruded using any one selected from insulating tape, synthetic resin, Teflon, nylon, or PVC.

The copper-clad steel wire 62 is a PTC wire whose resistance increases when heat is generated at a predetermined temperature. The copper-coated steel wire 62 is formed by coating copper (copper) with a predetermined thickness on the outer circumferential surface of the steel wire so as to increase conductivity, increase tensile strength, and reduce elongation. do.

The ground wire 70 uses a single core or a soft core, and it is preferable to use pure copper wire.

Next, the operation of the heating wire for shielding the electric field and magnetic field for an electric appliance according to an embodiment of the present invention configured as described above will be described.

First, one side end of the heating wire 60 and one end of the copper wire 51 constituting the copper core 50 are connected, and then the ground wire 70 is grounded. Then, the other end of the copper wire core 50 is +. When the pole power is applied and the negative power terminal is connected to the other end of the heating wire 60, the heating wire 60, the copper core 50, and the ground wire 70 are twisted adjacent to each other. The phase of the magnetic field generated in the vertical direction with respect to the current flowing in the copper wire 51 of 50 and the magnetic field generated in the vertical direction with respect to the current flowing in the heating line 60 form a phase difference of 180 degrees. The magnetic field generated at 50 and the magnetic field generated at the heating line 60 are canceled to shield (attenuate) the magnetic field generated at the copper core 50 and the magnetic field generated at the heating line 60.

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In other words, the copper-clad steel wire 62 is wound in a spiral shape on the outer circumferential surface of the polyester chamber 61 of the heating wire 60, and the positive pole is formed at the other end of the copper wire 51 constituting the copper wire core 50. When the power source is applied and the -power terminal is connected to the other end of the heating wire 60, one side of the copper-clad steel wire 62 and one side of the copper wire 51 constituting the copper wire core 50 are electrically connected. In addition, since the heating wire 60, the copper wire core 50 and the ground wire 70 are twisted adjacent to each other, the direction of the magnetic field generated in the vertical direction with respect to the current flowing through the copper wire core 50 and the heating wire The phase of the magnetic field generated in the vertical direction with respect to the current flowing through the copper-clad steel wire 62 of the 60 forms a phase difference of 180 degrees so that the magnetic field generated from the copper core 50 and the copper-stranded steel wire 62 of the heating wire 60 are formed. The magnetic field generated by The magnetic field generated in the magnetic field and the heating line (60) generated by the control (50) is shielded.

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In addition, as the current flows through the copper core 50 and the heating wire 60, heat is generated in the heating wire 60, and as the current flows in the copper core 50 and the heating wire 60. The generated electric field bypasses the ground through the ground line 70.

 The copper wire core 50 and the outer circumferential surface of the heating wire 60 are coated by extrusion molding any one selected from insulating tape, synthetic resin, Teflon, nylon or PVC, and the copper wire core 50 and the heating wire 60. And a thin film layer 80 coated with any one selected from an aluminum thin film or a copper thin film is disposed on the outer circumferential surface of the ground wire 70 twisted even when the middle of the ground line 70 covered with the thin film layer 80 is short-circuited. The electric field can be easily bypassed to ground through the ground line on the grounded side of the ground line 70 shorted to 80.

In addition, the outer circumferential surface of the copper core 50 and the heating wire 60 is coated by extrusion molding any one selected from insulating tape, synthetic resin, Teflon, nylon or PVC, and PVC is coated on the outer circumferential surface of the thin film layer 80. Since the extrusion coating with the extruded PVC layer 90, the insulation is greatly improved to prevent leakage of current to the outside to prevent the occurrence of fire due to a short circuit.

The copper wire core 50, the heating wire 60, and the ground wire 70 are twisted and the thin film layer 80 is disposed on the outer circumferential surface thereof while being wound with any one selected from an aluminum thin film or a copper thin film. Since the PVC layer 90 is formed by extruding PVC on the outer circumferential surface of the thin film layer 80, productivity can be improved, and the heating wire 60 is a constant temperature, for example, 60 ° C. or 80 ° C. (heating temperature is a heating wire. In the design of 60, the resistance value of the heating wire 60 is increased by reducing the current flowing through the heating wire 60 when heated to a temperature of the resistance value can be increased or decreased. It is possible to prevent the occurrence of fire due to overheating of the electric appliance.

Accordingly, the present invention can improve productivity, shield electric and magnetic fields, and prevent occurrence of fire due to overheating of an electric appliance.

In the above description, the specific embodiments have been shown and described, but the present invention is not limited thereto, for example, by those skilled in the art without departing from the concept of the present invention. Not only can the design be changed in various ways, but the design change is thus included in the concept of the present invention.

50: copper core 52: second insulating layer
60: heating element 61: polyester thread
62: copper steel wire 63: first insulating layer
70: ground wire 80: thin film layer
90: PVC layer

Claims (6)

The insulator is extruded on the outer circumferential surface of the copper wire 51 to form the second insulating layer 52, and when power is applied to the copper wire core 50 to which power is applied, and to the copper wire 51 of the copper wire core 50. By generating a magnetic field of 180 degrees out of phase with the magnetic field generated in the copper core 50 to shield the magnetic field generated in the copper core 50, the heating wire 60 to generate heat and bypass the electric field to ground A ground wire 70 made up of a plurality of strands of wire or copper wire and the copper core 50, the heating wire 60, and the ground wire 70 are wound around a twisted outer circumferential surface, and the electric field passing through the heating wire 60 is grounded. Electrically connected to the ground wire 70 to bypass the electric field and bypass the thin film layer 80 made of a conductor, the copper wire core 50, the heating wire 60, the ground wire 70, and the thin film layer. Leakage of current by covering the outer peripheral surface of 80 In the heating line and to block shield the electric and magnetic fields, for electrical household appliances, including a PVC layer 90 is extruded a PVC to insulate,
The heating wire 60 is a wire having a PTC temperature coefficient which increases resistance when a current flows to a certain temperature, and spirally forms a plurality of strands of polyester chamber 61 and an outer circumferential surface of the polyester chamber 61. Spiral shape on the outer circumferential surface of the polyester chamber 61 so as to shield a magnetic field generated in a direction perpendicular to the flow direction of the current when the current flows in the copper wire 51 constituting the copper wire core 50 And a first insulating layer 63 extruded and coated with an insulator on the outer circumferential surfaces of the polyester chamber 61 and the copper-clad steel wire 62 wound around the copper-clad steel wire 62.
The thin film layer (80) is a heating wire for shielding the electric and magnetic fields for electric appliances, characterized in that the coating of any one selected from aluminum thin film or copper thin film. delete delete delete delete The method of claim 1, wherein the copper-coated steel wire 62 is a PTC wire that increases resistance when heat generated at a predetermined temperature, shielding the electric and magnetic fields for electric appliances characterized in that the copper is coated with a predetermined thickness on the outer peripheral surface of the steel wire Heating wire.

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