KR101496822B1 - The electric heating apparatus using circuit for intercepting electromagnetic interference - Google Patents

Abstract

The present invention relates to an electric heating apparatus using a heating wire applied with an electromagnetic blocking circuit and, more specifically, to an electric heating apparatus using a heating wire, of which an antenna cable collects electromagnetic waves and converts the collected electromagnetic waves into surface current and which discharges the surface current through the ground. To accomplish the above purpose, the electric heating apparatus using a heating wire applied with an electromagnetic blocking circuit includes: the heating wire (10) configured to convert electric energy into thermal energy; the antenna cable (20) provided to coil around the heating wire (10); a converter (30) connected to the antenna cable (20); an electromagnetic blocking circuit module (40) connected to the converter (30) and the antenna cable; and a power supply unit (50) configured to supply power. The electromagnetic blocking circuit module (40) includes: an input unit (41) configured to receive alternating current converted by the antenna cable (20); an input terminal configured to receive voltages input from a rectifying unit (42), by which the alternating current input to the input unit (41) is converted into direct current, and the outside; and a grounding unit (43) configured to create a ground connection with the voltages received from the input terminal.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric heating apparatus using an electric heating line,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating element using an electric heating wire to which an electromagnetic wave blocking circuit is applied, and more particularly to a heating element using an electric heating wire which collects electromagnetic waves to convert them into surface currents and discharges them through a ground.

The original name of the electromagnetic wave is an electric magnetic wave, which is abbreviated as an electromagnetic wave. It is a kind of electromagnetic energy generated in electric and magnetic flow. Because the electric field and the magnetic field repeatedly spread like waves, they are called electromagnetic waves.

It is widely known that the risk of radiation such as X-rays and gamma rays with high energy and the ultraviolet rays cause various diseases such as skin cancer. However, recent controversy over electromagnetic hazards has been the subject of 'Extremely Low Frequency' (ELF) in transmission and distribution lines and household appliances, and 'Radio Frequency (RF)' in radio frequency : RF).

In 1999, the International Agency for Research on Cancer (IARC), a United Nations agency, has classified electromagnetic waves into two classes of carcinogens. The World Health Organization (WHO) conducted a health impact assessment and environmental impact assessment to establish internationally agreed standards for exposure to electromagnetic waves between 0-300 GHz using approximately $ 600,000 a year from 1996 to 2005, Evaluation studies.

Recently, with the rapid development of electronic devices, many communication devices have come to be used, so that frequency bands used for communication are increasingly needed. Therefore, unlike the past that used the frequency band of several hundred MHz, nowadays, the frequency band of several GHz is used as the communication frequency band. The use of such a higher frequency band has increased the effect of EMI (electromagnetic interference) on communication disturbances. If the human body is exposed to electromagnetic waves, it can result in dermatitis, headache, chronic fatigue, premature birth, and birth defects. Therefore, a device and a blocking technique for effectively blocking electromagnetic waves are required.

As a technique for reducing electromagnetic waves, Korean Patent Registration No. 1383975 discloses a technique for converting an electromagnetic current generated by a power consumption / transport apparatus into a converted AC current. And a grounding part for providing the converting part with a ground generated using a voltage input from the outside. The electromagnetic wave conversion and blocking device includes first and second input terminals to which a voltage is inputted from the outside, a ground unit connected to the first and second input terminals to generate a ground using the voltage, A current input terminal to which a current is inputted from the outside, and a rectifier which is connected to the current input terminal and is grounded from the connection ground and / or the ground, to rectify the current input from the outside, And a conversion unit for converting the image data. However, the electromagnetic wave suppression apparatus of No. 1383975 is effective for electromagnetic waves in a low frequency band, but has a problem of insufficient reduction effect in a high frequency band of the KHz-MHz band.

Korean Patent Publication No. 1383975

As described above, since the electronic circuit is built in the power supply module, electromagnetic waves of high frequency and high output are emitted to the outside, which can adversely affect the user's body. Specifically, when the human body is exposed to electromagnetic waves, it can result in dermatitis, headache, chronic fatigue, premature birth, and birth defects. Therefore, a device and a blocking technique for effectively blocking electromagnetic waves are required.

However, the electromagnetic wave reduction apparatus of No. 1383975 is effective for electromagnetic waves in a low frequency band, but has a problem of insufficient reduction effect in a high frequency band of the KHz-MHz band.

Particularly, in the case of a heating device using an electric heating line such as an electric plate, which is exposed to a user for a long time, electromagnetic wave shielding is important, but electromagnetic wave collection and removal are not easy.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above problems, and an object of the present invention is to provide an electric heating element using an electric heating wire to which an electromagnetic wave interception circuit is applied, an electric heating element for converting electric energy into thermal energy, A converter 30 connected to the antenna line 20, an electromagnetic wave blocking circuit module 40 connected to the converter 30 and the antenna line, Wherein the electromagnetic wave interception circuit module 40 includes an input unit 41 to which the AC current converted by the antenna line 20 is input and an AC current input unit An electric heater using an electric heating line to which an electromagnetic wave interrupting circuit including a rectifying part 42 converted into a current, an input terminal for receiving a voltage input from the outside, and a grounding part 43 for generating a ground by a voltage received from the input terminal By providing it in order to solve the problems as described above.

By applying the electric heating device and the electromagnetic wave shielding method using the heating wire to which the electromagnetic wave blocking circuit of the present invention is applied, it is possible to effectively shield the electromagnetic wave generated from the heating wire, the converter or other parts.

In particular, the antenna wire of the present invention can be inserted into a sheet overlaid with a heating wire in the case of applying a mat, and in the case of a non-mat heating heater, the heating wire can be installed by being wound around the heating wire, Capture and absorb. Since the above-described configuration requires a relatively low installation cost, a replacement effect can be expected for an expensive electromagnetic wave rejection filter (CMEF)

Further, the electromagnetic wave interrupting circuit of the present invention includes the high frequency processing unit 44 for processing noise in the high frequency range, thereby reducing not only the low frequency band but also the electromagnetic wave in the high frequency band.

1 is a block diagram of a heating unit using an electric heating line to which an electromagnetic wave blocking circuit of the present invention is applied.
FIGS. 2A and 2B are diagrams illustrating examples of a heating wire and an antenna wire of a heating element using an electric heating wire to which the electromagnetic wave blocking circuit of the present invention is applied.
3 is a circuit diagram of Embodiment 1 of the electromagnetic wave interrupting circuit of the present invention.
4 is a circuit diagram of an electromagnetic wave interrupting circuit according to a second embodiment of the present invention.
5 is a circuit diagram of a third embodiment of the electromagnetic wave interrupting circuit of the present invention.
Fig. 6 is a flow chart of the electromagnetic wave blocking method of the electromagnetic wave blocking circuit of the present invention.
Fig. 7 is a measurement graph when the electromagnetic wave interrupting circuit of the present invention is not applied.
Fig. 8 is a measurement graph when the electromagnetic wave interrupting circuit according to the first embodiment of the present invention is applied.
Fig. 9 is a measurement graph when the electromagnetic wave blocking circuit according to the second embodiment of the present invention is applied.
10 is an exemplary diagram showing an automatic operation module to which an AC relay is applied to the electromagnetic wave interrupting circuit of the present invention.
11 is an exemplary diagram showing an automatic operation module in which four MOSFETs are applied to the electromagnetic wave blocking circuit of the present invention.
12 is a sectional view of another embodiment of the heating wire of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heating element using an electric heating wire to which an electromagnetic wave blocking circuit is applied, and more particularly to a heating element using an electric heating wire that collects electromagnetic waves by an antenna wire to convert them into surface currents, DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings.

FIGS. 2A and 2B are diagrams illustrating examples of a heating wire and an antenna wire of a heating element using an electric heating wire to which the electromagnetic wave blocking circuit of the present invention is applied.

As shown in FIG. 2A, the present invention is an electric heating mat (mat) to which an electromagnetic wave interrupting circuit is applied, the electric heating line 10 for converting electric energy into thermal energy, the upper and lower sheets a converter 30 connected to the antenna line 20 and connected to the converter 30 and an antenna line 20 connected to the antenna 30; An electromagnetic wave interrupting circuit module 40 and a power supply part 50 for supplying power to the electromagnetic wave interrupting circuit module 40. The electromagnetic interrupting circuit module 40 includes an input part 41 for receiving the AC current converted from the antenna line, 41 includes a rectifying section 42 for converting an alternating current inputted to a direct current into a direct current, an input terminal for receiving a voltage input from the outside, and a grounding section 43 for generating a ground with a voltage received from the input terminal When an electric wire that applies an electromagnetic Provide a hot air heater.

The present invention further includes an electric heating line 10 for converting electric energy into thermal energy, and an electric heating element 10 for converting the electric energy into heat energy, as shown in FIG. 2B, for application to an apparatus such as an electric heater, a toaster, A converter 30 connected to the antenna line 20, an electromagnetic wave blocking circuit module 40 connected to the converter 30 and the antenna line, The electromagnetic interference circuit module 40 includes an input unit 41 to which an AC current converted by the antenna line 20 is input and a power supply unit 50 to supply power to the AC An electromagnetic wave shielding circuit including an electromagnetic wave blocking circuit including a rectifying section 42 for converting a current into a direct current, an input terminal for receiving a voltage input from the outside, and a grounding section 43 for generating a ground with a voltage received from the input terminal, Using a heater to provide.

Fig. 2A shows a configuration in which an antenna wire 20 is inserted into a sheet 60 in an electric heater of a mat type, and collects the electromagnetic waves in the entire sheet. The antenna line 20 can be inserted into both the upper and lower sheets 60 as required and the antenna line 20 can be attached to one side of the sheet by replacing the insertion line.

FIG. 2B is an exemplary view showing a heating wire and an antenna wire of a heating element using an electric heating wire to which the electromagnetic wave blocking circuit of the present invention is applied. As shown in FIG. 2B, the antenna line 20 may be installed by winding the heating wire 10 therebetween. The antenna line 20 and the heating wire 10 may be placed side by side or the antenna wire 20 and the heating wire 10 may be fixed by a spacing member at a constant interval to maintain a constant distance . The antenna wire 20 may be made of metal fiber. When the antenna wire 20 is made of metal fibers, the antenna wire 20 may be wound in close contact with the heating wire 10.

The antenna line 20 may be formed of a plating or a conductive coating on the outer surface of the covering 11 of the heating wire 10 as shown in a sectional view of the heating wire 10 of FIG. 12A. 12B, the antenna wire 20 is formed on the outer surface of the cover 11 of the heating wire 10 by plating or a conductive coating, and then is coated with a nonconductive coating (not shown) for electrical safety. 21) may be applied.

That is, the antenna line 20 may be one selected from the group consisting of a metal fiber, a conductor plated on the heating wire coating, a conductive material coated on the heating wire coating, and an aluminum foil surrounding the heating wire coating.

In addition, the electromagnetic wave interception circuit module 40 may include a high frequency processing unit 44 for processing noise in a high frequency range.

The antenna line 20 of the present invention collects electromagnetic waves generated from the heating wire 10 and the converter 30 and converts them into surface currents. The collected electromagnetic waves are converted into a surface current, which is an alternating current, and are flowed to the electromagnetic wave interrupting circuit module 40. The alternating current is a surface current generated by the electromagnetic wave contacting the conductive object, and the surface current can flow along the surface of the conductive object. For example, the alternating current may be a current that is generated by various electronic devices converted into a surface current and flows to the ground. Alternatively, the alternating current may be an electromagnetic wave generated by an electronic device inside or outside the building, Current.

Further, the present invention includes an electromagnetic wave blocking circuit module to rectify the surface current, which is the alternating current, into a direct current.

3 is a circuit diagram of an electromagnetic wave interrupting circuit module according to a first embodiment of the present invention. The electromagnetic intercepting circuit module 40 includes an input unit 41 for receiving an AC current converted from the surface of the antenna line 20, A rectifying section 42 which is converted into a direct current, and a grounding section 43 which generates ground by a voltage input from the outside. This configuration limits the inrush current of the NTC, limits the surge by using a varistor, limits the input current voltage by using Ohm's law, adjusts the input voltage to almost zero in the rectifier circuit, So that the surface current of the electromagnetic wave is smoothly discharged through the ground through the mutual relation of the potentials. Through the above-described configuration, noise in a low frequency (less than 1000 Hz) section is eliminated.

In addition, the present invention further includes a high frequency processing unit 44 for reducing high frequency noise. The high frequency processing unit 44 consumes high frequency noise in the bead filter 441 and eliminates the high frequency noise through the varistor 442, Constant voltage is input to suppress unnecessary noise. In this case, the bead filter 441 may be a ferrite core. Thereafter, the noise is discarded to the antenna line 20 through the LC filter (CFI-104M is used in the present application), and the noise is collected through the input unit 41 and removed. On the other hand, when two lines are connected to the grounding unit 43, only one line may be connected and the other line may be constituted by the hold line 444 since high frequency may occur.

4 is a circuit diagram of an electromagnetic wave interrupting circuit according to a second embodiment of the present invention. The embodiment of FIG. 3 includes an EMI filter applied to the high-frequency processor 44. The EMI filter includes a decoupling capacitor 445, a pair of coils 446, and two capacitors 447 .

The bead filter 441 and the varistor 442 are the same as those in the first embodiment shown in FIG. 2, and a decoupling capacitor connected adjacent thereto preferably has a value between 0.1 uF and 1200 uF. In the case of the coil 446 provided adjacent to the decoupling capacitor 445, it is desirable to have a value between 0.3 uH to 50 mH for removing noise of kHz to MHz. The capacitor 447 disposed behind the coil 446 is used to reject the high frequency noises to the antenna line 20. The values of the two capacitors 447 are equal to each other and have a value of 3000 pF to 100 nF. The EMI filter of the present invention having the numerical limitations described above has a higher efficiency for an EMI filter built in a conventional SMPS which is at a level that slightly exceeds a reference value or exceeds a reference value.

In the second embodiment shown in Fig. 4, the low frequency noise removal is the same as the first embodiment shown in Fig.

Fig. 5 is a circuit diagram of an electromagnetic wave interrupting circuit according to a third embodiment of the present invention, which shows an electromagnetic interrupting circuit in which the interrupting circuit of the first embodiment is combined with the interrupting circuit of the second embodiment. This is because the blocking circuit of the first embodiment is different from the noise removing area for each frequency of the high-frequency processing unit 44 of the second embodiment, so that the two circuits are added in series, .

FIG. 6 is a flowchart of a method of interrupting the electromagnetic wave of the LED illumination device according to the present invention,

When the antenna wire 20 absorbs electromagnetic waves, a surface current is generated on the surface of the antenna line 20 by the absorbed electromagnetic waves. The high frequency region of the surface current, which is the alternating current, consumes high frequency noise from the bead filter as heat, And the low frequency region of the surface current, which is the AC current, is converted from the rectifying section (42) of the electromagnetic wave interrupting circuit module (40) to a DC current, and then the converted DC current is discharged through a ground Thereby blocking electromagnetic waves. At this time, the ground may be at least one selected from an outlet ground, a neutral ground, and a virtual ground.

That is, the present invention includes a step (s100) of absorbing electromagnetic waves generated from the heating wire 10; A step s200 of generating a surface current at the antenna line 20 by electromagnetic waves; A high frequency processor 44 (see FIG. 1) including a bead filter 441 installed in the electromagnetic wave interrupting circuit module 40 for eliminating high frequency noise by heat and a varistor 442 for receiving a constant voltage and suppressing generation of unnecessary noise, A high frequency processing step (s300) of processing the high frequency noise collected from the antenna line (20) through the antenna (20); A discharging step (S400) of discharging the low frequency region noise to the antenna line (20); Low frequency region noise collection step (s500); A rectifying part 42 for converting an alternating current inputted to the input part 41 into a direct current and an input part 42 for receiving a voltage inputted from the outside, And a grounding part 43 for generating a ground with a voltage received from the input terminal, the surface current being the alternating current is converted from a rectifying part of the electromagnetic interrupting circuit module to a direct current Step s600.

FIG. 7 is a graph of Ce test measurement when the electromagnetic interception circuit of the present invention is not applied, FIG. 8 is a graph of Ce test measurement when the electromagnetic interception circuit of the first embodiment of the present invention is applied, and FIG. 2 is a Ce test measurement graph when the electromagnetic wave interrupting circuit of Example 2 is applied. The uppermost line in each graph represents the reference value, the middle line represents the maximum value of the measured values, and the lower line represents the average value of the measured values.

As can be seen from the Ce test graphs of FIGS. 8 and 9, when the electromagnetic wave shielding circuit of the present invention is applied, it can be confirmed that electromagnetic waves are significantly reduced as compared with the Ce test graph of FIG.

In addition, the present invention provides an automatic operation module 45 for automatically activating the electromagnetic interference circuit module 40 regardless of the polarity directional connection of the power source. 10 and 11 show an embodiment in which an automatic operation module 45 is added to allow the electromagnetic interference circuit module 40 to be automatically operated irrespective of whether or not the user has connected the power in the correct direction . The automatic operation module 45 may be selectively added as needed, and the circuit diagrams of Figs. 10 and 11 are illustrative, and the present invention is not limited thereto. FIG. 10 shows an automatic operation module 45 to which an AC relay (DK-3S220VAC) 451 is applied, and FIG. 11 shows an automatic operation module 45 using four MOSFETs (IRFs) The automatic operation module 45 shown in Figs. 10 and 11 automatically operates the electromagnetic wave interrupting circuit module 40 regardless of the polarity directional connection of the power source as described above, thereby enabling operation of a more reliable device do.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it should be understood that various changes and modifications will be apparent to those skilled in the art. It is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the scope of protection of the present invention should be construed according to the following claims, and all technical ideas which fall within the scope of equivalence by alteration, substitution, substitution, Range. In addition, it should be clarified that some configurations of the drawings are intended to explain the configuration more clearly and are provided in an exaggerated or reduced size than the actual configuration.

10. Electric wire
20. Antenna wire
30. Converter
40. Electromagnetic Interference Circuit Module
41. Input unit
42. Rectifier
43. Grounding
50. Power supply

Claims (12)

In an electric heating mat (mat) to which an electromagnetic wave blocking circuit is applied,
An upper heating sheet 10 for converting electrical energy into heat energy; an upper and lower sheet 60 for storing the heating wire 10; an antenna wire 20 inserted or in contact with the sheet; A converter 30 connected to the converter 20 and an electromagnetic wave interrupting circuit module 40 connected to the converter 30 and the antenna line and a power supply 50 for supplying power,
The electromagnetic wave interrupting circuit module (40)
A rectifier 42 for converting an alternating current inputted to the input unit 41 into a direct current and an input for receiving an externally input voltage, And a grounding unit (43) for generating a ground by a voltage received from the input terminal.
In a heating element using an electric heating wire to which an electromagnetic wave blocking circuit is applied,
A converter 30 connected to the antenna line 20 and a control unit 30 connected to the antenna line 20 to convert the electric energy into heat energy; an antenna line 20 installed to wind the heating line 10; An electromagnetic wave interrupting circuit module 40 connected to the converter 30 and the antenna line, and a power supply unit 50 for supplying power,
The electromagnetic wave interrupting circuit module (40)
A rectifier 42 for converting an alternating current inputted to the input unit 41 into a direct current and an input for receiving an externally input voltage, And a grounding unit (43) for generating a ground by a voltage received from the input terminal.
3. The method according to claim 1 or 2,
The electromagnetic interference circuit module (40) includes a high frequency processor (44) for processing noise in a high frequency range.
The method of claim 3,
The high-frequency processing unit 44
A bead filter 441 for eliminating high frequency noise as heat and a varistor 442 for suppressing generation of unnecessary noise by receiving a constant voltage and an LC filter 443 for rejecting noise on the antenna line 20 Wherein the electromagnetic wave blocking circuit is applied to the heating element.
The method of claim 3,
The high frequency processor 44 includes a bead filter 441 for dissipating high frequency noise as heat and a varistor 442 for suppressing generation of unnecessary noise by receiving a constant voltage and an EMI filter for eliminating high frequency noise Wherein the electromagnetic wave blocking circuit is applied to the heating element.
The method of claim 3,
The antenna line 20 is installed over the entire heating line 10 to collect electromagnetic waves generated from the heating line 10 and convert it into a surface current,
Wherein the electromagnetic wave shielding circuit comprises one selected from a metal fiber, a conductor plated on the heating wire coating, a conductive material coated on the heating wire coating, and an aluminum foil covering the heating wire coating.
The method of claim 3,
Wherein the antenna line (20) converts the collected electromagnetic waves into a surface current, which is an alternating current, and sends the converted surface current to the input section (41) of the electromagnetic wave interception circuit module (40).
6. The method of claim 5,
The EMI filter for removing the high frequency noise includes a decoupling capacitor 445 and a pair of coils 446 and two capacitors 447 disposed adjacent to the decoupling capacitor 445 Which uses an electromagnetic wave shielding circuit.
9. The method of claim 8,
And the capacitors 447 provided at the rear of the coil 446 have the same value of 3000 pF to 100 nF for the two capacitors 447.
9. The method of claim 8,
And a coil 446 provided adjacent to the decoupling capacitor 445 has a value between 0.3 uH to 50 mH to remove noise in the kHz to MHz band.
A converter 30 connected to the antenna line 20; a transmission line 10 connected to the transmission line 10; a converter 30 connected to the antenna line 20; An electromagnetic wave shielding method using a heating wire including a converter (30), an electromagnetic wave interrupting circuit module (40) connected to an antenna line, and a power supply part (50)
I) absorbing electromagnetic waves generated from the heating wire 10 (s100);
Ii) a step s200 of generating a surface current at the antenna line 20 by electromagnetic waves;
(Iii) a high-frequency processing unit which is installed in the electromagnetic wave interrupting circuit module and includes a bead filter 441 for dissipating high-frequency noise as heat and a varistor 442 for receiving a constant voltage and suppressing generation of unnecessary noise, (S300) for processing the high frequency noise collected from the antenna line (20) through the antenna (44);
Iv) a discharging step (S400) of discharging the low-frequency region noise to the antenna line (20);
v) low frequency region noise collection step (s500);
vi) a rectifying section 42 for converting the alternating current inputted to the input section 41 into a direct current, and a rectifying section 42 for receiving a voltage inputted from the outside, Through an electromagnetic wave interrupting circuit module 40 including an input terminal and a grounding part 43 for generating a ground with a voltage received from the input terminal
A step (s600) of converting the surface current, which is the AC current, from the rectifying part of the electromagnetic wave blocking circuit module to a DC current;
Wherein the electromagnetic wave shielding method comprises the steps of:
12. The method of claim 11,
In the high-frequency processing step (s300), the high-frequency processing unit 44 includes an LC filter 443 for rejecting noise or an EMI filter for eliminating high-frequency noise. .

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