KR200380398Y1 - The electric heat mat controller by using heating rays which electromagnetic fields are shielded and offseted - Google Patents

Abstract

The present invention discloses the "electric magnetic field shielding and offset function disclosed in patent application No. 2003-0048770 (published no. 2003-0069924, Aug. 27, 2003) filed by the inventor and the applicant. The heating mat controller using the "heating wire having a", wherein the sensor winding constituting the heating wire is configured to detect the electrical resistance change proportional (or inversely) to the heating temperature as a temperature value so that the temperature of the heating winding is controlled to the set temperature. By doing so, the heat transfer mat temperature control with high reliability is achieved.

Description

Heat transfer mat controller using heating line that shields and cancels electromagnetic field {THE ELECTRIC HEAT MAT CONTROLLER BY USING HEATING RAYS WHICH ELECTROMAGNETIC FIELDS ARE SHIELDED AND OFFSETED}

The present invention relates to a heat transfer mat controller using a heating wire that shields and cancels electromagnetic fields (electric and magnetic fields).

In general, electric charges create an electric field in space, and moving charges, that is, electric currents, create an electric field surrounding it.

When a current flows through the conductor, a magnetic field is formed around the conductor, and when the current has a specific frequency, an alternating electric magnetic field is formed. At this time, the higher the charge, the larger the electric field, and the more the current flows, the larger the magnetic field. The magnetic field (electromagnetic wave) and electric field (electromagnetic wave) whose intensity changes periodically are Propagation through space is called electromagnetic waves.

Therefore, when an alternating current flows through the conductor, electromagnetic waves of a power source frequency (50/60 Hz) are naturally generated, and the electromagnetic waves stimulate and damage many places of the human body.

The most effective way to remove the above electric field is to surround the electric field generating source (conductor, heat mat, heat insulation, various electric equipment, etc.) with a conductor and completely shield it, and then connect the conductor to the earth and the electric field induced by the conductor is grounded. The most effective way to remove the magnetic field is to completely shield the magnetic field source with a high permeability metal to shield the magnetic field from being released to the outside.

And, if the heating wire is distributed over a large area like the heating mat, there is a method of completely wrapping the entire heating mat with a conductor to remove the electric field, and a method of completely wrapping the whole heating mat with a high permeability metal to remove the magnetic field. It is not realistic because of the high cost in terms of economy.

On the other hand, the present inventors, in order to solve the above problems, the sensor winding wound on the outer circumferential surface of the winding core to act as a temperature sensor, and the heating winding reciprocating in the opposite direction to the outer surface of the sensor winding to generate heat, and the heating winding outer peripheral surface A "heating wire having an electric magnetic field shielding and offset function" composed of a shielding winding wound around and a plurality of insulating members for maintaining insulation between each winding to effectively shield and offset the electric and magnetic fields generated from the heating winding. The patent application was issued on July 16, 2003, filed with No. 10-2003-0048770, and was published on August 27, 2003, special publication 2003-0069924.

As shown in Figs. 1 and 2, the heating wire disclosed in the patent draft is wound around the winding cores 1 (S2) at predetermined intervals on the outer circumferential surface of the insulation core 1 of a predetermined diameter (winding), and then to both sides of the winding core 1. An end thereof protrudes, the primary insulating member 2 of nylon is coated on the outer circumferential surface of the winding core 1 to a predetermined diameter, and wound (wound) return unit HC is wound on the outer circumferential surface of the primary insulating member 2. The heating winding H1 (H2) having a reciprocating winding in the opposite direction, the secondary insulating member (3) on the outer peripheral surface and the outer peripheral surface of the heating winding (H1) (H2) of the primary insulating member 2 to a predetermined diameter The shielding windings C1 and C2 are wound at predetermined intervals on the outer circumferential surface of the secondary insulating member 2, and then ends thereof protrude to both sides of the secondary insulating member 2, and the secondary insulating member ( 3) and the tertiary insulating member 4 are coated on the outer circumferential surface of the shielding windings C1 and C2 with a predetermined diameter to form the heating line HS.

AC power (110V / AC 220V) intermittently supplied by the heat transfer mat controller is supplied to the heat generating windings H1 and H2 to generate heat, and the sensor windings S1 and S2 are heat generating windings H1. The heating temperature of H2 is detected as a current (or voltage) and input to the temperature comparison part of the controller. The shield windings C1 and C2 are connected to the ground and are generated from the heating windings H1 and H2. Most (more than 90%) of the electric and magnetic fields are shielded and canceled out.

Since the heating windings H1 and H2 are reciprocated in the opposite direction to the outer circumferential surface of the primary insulating member 2, the current direction flowing to the heating windings H1 and H2 is reversed. Therefore, since the direction of the magnetic field generated from the heating windings H1 and H2 is reversed and the current value is the same, most of the generated magnetic fields are canceled out. The windings S1, S2, C1, and C2 are conductive wires such as copper or alloy wires, and the heating windings H1 and H2 are heating wires.

Therefore, the present invention has been devised to solve the above problems, and the patent application No. 2003-0048770 (published no. 2003-0069924, 2003. 8. 27.) using a "heating wire having an electric magnetic shielding and canceling function", wherein the sensor winding constituting the heating wire is a temperature value (voltage and / or current as a resistance change in proportion to (or inversely) the heating temperature) ) Is designed to control the temperature of the heating winding and control the heating mat temperature with high reliability.

In order to achieve the above object, a heating wire in the form of a wire composed of a sensor winding, a heating winding, and a shielding winding to shield and cancel an electromagnetic field, and a heating winding connected in series with a control command and serially connected to the heating winding Switching element for turning on / off the AC power supply (110V / 220V) supplied to the sensor, Sensing temperature input unit for inputting the temperature value of the sensor winding which senses the heat generation degree of the heating winding to the temperature comparing unit, and the user. A reference temperature setting unit for inputting a reference temperature set by the temperature comparison unit, a temperature comparison unit for outputting a control signal to generate a heating winding in a set temperature range by comparing the detected temperature with the reference temperature, and comparing the temperature Trigger part for controlling the switching element according to the control signal output from the part, and direct current for stably supplying the DC power required for operation to each circuit part. A ground selection circuit section for shielding and eliminating an electric field (harmful electromagnetic wave) generated from a heating winding by selecting a power supply section, an AC power supply terminal or another AC power supply terminal or a ground terminal and connecting the shielding winding to form a grounding circuit; It consists of a self-recovering poly switch which is connected between the circuit part and the shielding winding to block overcurrent.

In describing the present invention, the same elements in the drawings are denoted by the same reference numerals as much as possible, and detailed descriptions of related known configurations or functions will be omitted so as not to obscure the subject matter of the present invention.

Heat wire (HS) used in the present invention, as described above, the sensor winding (S1) (S2) is wound on the outer peripheral surface of the insulation core (1) of a predetermined diameter at a predetermined interval (winding), and then both ends of the core (1) Are respectively protruded, the primary winding member 2 of nylon material is coated on the outer circumferential surface of the winding core 1 to a predetermined diameter, and a heating winding having a winding return portion HC on the outer circumferential surface of the primary insulating member 2. (H1) and (H2) are reciprocated in the opposite direction so as not to contact each other, and the secondary insulating member (3) has a predetermined diameter on the outer circumferential surface of the primary insulating member (2) and the outer circumferential surface of the heating winding (H1) (H2). The shielding windings C1 and C2 are wound at predetermined intervals on the outer circumferential surface of the secondary insulating member 2, and ends thereof protrude to both sides of the secondary insulating member 2, respectively. 3) and the tertiary insulating member 4 are coated on the outer circumferential surface of the shielding windings C1 and C2 with a predetermined diameter to form a heating wire HS in the form of a wire.

The AC windings AC 110V / AC 220V supplied by the controller are supplied to the heating windings H1 and H2 to generate heat, and the sensor windings S1 and S2 are heating windings H1. H2 is detected as a current (or voltage) and input to the temperature comparison unit of the controller. The shield windings C1 and C2 are connected to the ground or ground through the ground terminal GROUND of the ground selection circuit unit G. It is configured to be grounded to the AC power supply terminal.

Since the heating windings H1 and H2 are reciprocated in the opposite direction to the outer circumferential surface of the primary insulating member 2, the flow of current and the direction in which the magnetic field is formed are reversed, respectively, and the heating values are the same. Most of the magnetic field generated from H2) is canceled, and shielded windings C1 and C2 positioned outside the heating line HS are connected to the ground terminal GROUND or one side AC power terminal of the ground selection circuit unit G. Since it is connected to the ground, most of the electric field generated from the heating windings H1 and H2 is shielded.

Therefore, most of the electric and magnetic fields (more than 90%) generated from the heating coils H1 and H2 are shielded and canceled to remove harmful electromagnetic waves harmful to the human body. Almost no planar shielding member is required.

The windings S1, S2, C1, and C2 are conductive wires such as copper or alloy wires, and the heating windings H1 and H2 are heating wires that generate heat.

In the present invention, the outer circumferential surfaces of the heater windings H1, H2, sensor windings S1, S2, and ground windings C1, C2 constituting the heating line HS have a predetermined thickness or a plurality of times. It is preferable to apply an insulating coating layer to prevent electrical contact or short circuit between the windings to improve safety, and the secondary insulating member 3 and the tertiary insulating member 4 are silicon having excellent heat resistance and insulation property. Use rubber to ensure safety.

3 is a circuit block showing an example of the present invention, a heating wire having a wire shape consisting of a sensor winding, a heating winding, and a shielding winding, and a trigger signal (ON / ON) of the temperature comparison unit C connected in series with the heating winding; Switching element (TH) for intermitting (on / off) the AC power (110V / 220V) supplied to the heating coil according to the OFF), and the sensor winding sensing the heating degree of the heating coil by voltage, current, or resistance change. A sensing temperature input unit for inputting a temperature value of the input unit into the temperature comparing unit C, a reference temperature setting unit for inputting a reference temperature set by the user to the temperature comparing unit C, and comparing the detected temperature with the reference temperature A temperature comparator C for outputting a control signal to heat the heating winding in a set temperature range, and a trigger part T for controlling the switching element TH according to a trigger signal output from the temperature comparator C. And each circuit part is necessary for operation The DC circuit can be supplied stably to supply current power (+ Vcc) and AC power terminal AC1 or other AC power terminal AC2 or ground terminal is connected to the shielding winding to form a ground circuit. Ground selection circuit section (G) for shielding and removing electric fields (harmful electromagnetic waves) generated from the windings, and automatic recovery type poly switch (PS) connected between the ground selection circuit section (G) and the shield winding to block overcurrent. .

The sensor winding is sensed as a temperature value (voltage and / or current) due to a change in electrical resistance that is proportional to or inversely proportional to the heating temperature of the heating winding, and is input to the temperature comparing unit C. In the case of using the resistance change method, power is supplied to the sensor winding through the pullup resistor. When the resistance value of the sensor winding increases in proportion to the heating temperature, the current supplied through the pullup resistor changes, and thus the temperature is sensed.

4 is a circuit diagram illustrating an embodiment of the present invention, wherein the fuse SF, the temperature fuse TF, the power switch SW, and the heating line HS are connected to both terminals AC1 and AC2 of the AC power source. The heater windings H1 and H2 and a switching element TH such as a triac TRAIC are connected in series.

In addition, a DC power supply unit consisting of a resistor R1, a capacitor C6, a diode D1 (D2), a capacitor C7, and a Zener diode ZD is connected to both terminals AC1 and AC2. DC constant voltage (+ Vcc) required for operation is supplied.

In addition, a ground selection circuit portion G having a ground terminal GROUND connected to both terminals AC1 and AC2 is connected. The ground selection circuit unit G selects one of an AC power terminal AC1, another AC power terminal AC2, or a ground terminal GROUND, and connects the shielding winding C1 (C2) of the heating line HS to a ground circuit. By so doing, the electric field (harmful electromagnetic waves) generated from the heating windings H1 and H2 is absorbed and removed.

A poly switch PS as a protection element is connected between the ground selection circuit unit G and the shield windings C1 and C2 of the heating line HS, so that the ground selection circuit unit G and the shielding winding ( When AC power of 110V / 220V is applied between C1) and C2, the heating line HS is protected by the poly switch PS.

In the poly switch, when an overcurrent flows into the circuit, the overcurrent is limited as the poly switch PS changes from a low resistor to a high resistor by Joule heat generated by the current. On the contrary, if the heating line HS is protected and the overcurrent factor is removed and the temperature of the device is lowered, the resistance value is returned to the low value of the initial state so that the circuit can be normally operated.

In general, a fuse used for overcurrent protection of an electronic product is operated as a single-use protection device when an overcurrent flows, and in order to restart the product, the fuse is inevitably replaced, and the switch is repeatedly turned on or off. In some cases, the poly switch (PS) is made of an electrically conductive polymer, which can be used semi-permanently without changing parts. In addition, the poly switch (PS) has excellent characteristics in harsh environmental conditions such as vibration, moisture, dust, and the like, compared to existing fuses and overcurrent protection devices, and has excellent characteristics in installation conditions such as workability.

The variable resistor R5 includes a resistor R4, a variable resistor R5, a resistor R1, a diode D3, and a capacitor C5 connected in series to both terminals AC1 and AC2. Is connected to the reference temperature setting section for setting the reference temperature voltage.

In addition, a sensing temperature input unit comprising resistors R2 and R3 connected to the sensor windings S1 and S2, a diode D4 and a capacitor C3 and C4, and a reference temperature voltage and a sensing temperature voltage are compared. The temperature comparison part C to judge, and the trigger part T which turn ON / OFF the switching element TH according to a temperature comparison value are comprised.

The primary insulating member 2 is positioned between the heater windings H1 (H2) and the sensor windings S1 (S2) of the heating wire HS, and the heater windings H1 (H2) and the shielding winding C1 ( The secondary insulation member 3 is located between C2), and the tertiary insulation member 4 is located on the outer periphery of the shield windings C1 and C2.

The reference temperature voltage and the input temperature voltage are rectified by the respective diodes D3 and D4 and then input to the temperature comparison unit C. The primary insulating member 2 may be a nylon thermistor as an NTC-based material in which leakage current changes in proportion to temperature, and of course, a PTC material may be used.

In the present invention, the ground selection circuit unit (G) is a circuit connection is selected by a manual or automatic selector method, the equivalent circuit is a movable terminal and an AC power supply line (AC1) connected to the poly switch PS as shown in FIG. It consists of a fixed terminal connected respectively to (AC2) and a ground terminal (GROUND).

5 is a circuit diagram of another embodiment of the present invention, unlike the sensor winding (S1) (S2) is detected as a voltage proportional to the heating temperature by using a resistance change proportional to the heating temperature sensor winding (S1) (S2) ) Will sense the temperature.

That is, the resistor R7 and the AC power supply terminal AC1 are connected in series to one sensor winding S2, and the resistor R2 and the power supply terminal AC2 are connected in series to the other sensor winding S1 and the sensor winding is connected in series. AC power is supplied to S1 and S2. When the internal resistance of the sensor windings S1 and S2 increases in proportion to the heating temperature of the heating lines H1 and H2, the resistance R7 is applied to the power supply. Since the current supplied to the sensor windings S1 and S2 changes, a temperature current proportional to the temperature and its temperature voltage can be obtained.

Therefore, it is possible to control the temperature by detecting the conductor electrical resistance of the sensor windings S1 and S2 that change according to the heating temperature of the heating windings H1 and H2.

In the case of the sensor windings C1 and C2 of FIG. 5, a conductor with a high resistance change is preferable according to the heating temperature, and the primary insulation member 2 may be made of silicon having better heat resistance and insulation resistance instead of nylon. Can be.

Then, the temperature voltage is rectified by the diode (D4) and then input to the temperature comparison unit (C) and compared with the reference temperature value, when the temperature comparison value is out of the set range, that is, the temperature is determined to compare the set temperature If the temperature rises further, the trigger signal T is turned off by outputting an off signal (LOW active) and the heat generation of the heating windings H1 and H2 is stopped. The temperature detection value according to the temperature drop is continuously inputted to the temperature comparison unit C to be compared with the set reference temperature value.

On the contrary, when the temperature judged to fall below the set temperature, the trigger unit T turns on the switching element TH by outputting an ON signal HIGH active and generating heat windings H1 and H2. As the heating of) resumes, the temperature rises, and the temperature detection value according to the temperature rise is continuously inputted to the temperature comparing unit (C) and compared with the set reference temperature value. In this process, the heating temperature is generated in the set temperature range. do.

In addition, in the case of the present invention Figure 5, since one side of the sensor winding (S2) is connected to the AC power source (AC) through the resistor (R4) according to the heating temperature of the heating winding (H1) (H2) sensor winding (S1) (S2) As the resistance of) changes, the input temperature value input to the temperature comparator C is also changed, and the input temperature value is compared with the reference temperature value in the temperature comparator C, and the temperature of the temperature comparator C The heating temperature of the heating windings H1 and H2 is controlled to the set temperature according to the control signal.

In addition, the pull-down resistor R2 connected to the sensor windings S1 and S2 is in physical contact with the temperature fuse TF, and the primary insulating member 1 is caused by excessive heat generation of the heating windings H1 and H2. When the heating coils H1 and H2 and the sensor windings S1 and S2 are shorted as they are melted, the resistor R2 is excessively heated, and thus, a temperature fuse in contact with the resistor R2. Excessive heat is immediately transferred to (TF) and the temperature fuse (TF) is fused, so that the AC power supplied to the circuit is cut off, thereby protecting the circuit and preventing damage to the heat transfer mat and fire.

In the present invention, since the heating winding H1 and H2 operate as an AC power source 110V / 220V, the switching element TH is preferably an onion switching element such as a triac TRAIC.

As described above, the present invention is capable of various substitution, modification and modification within the scope of the present invention without departing from the technical spirit of the present invention. It is not limited to the drawings shown.

As described above, the present invention obtains the sensed temperature value necessary for temperature control by using the resistance change of the sensor winding proportional to the heating temperature, thereby making it possible to achieve reliable temperature control.

In addition, the present invention has the effect that the magnetic field generated in the heating winding is canceled by the heating winding wound in the opposite direction, and the electric field is shielded by the shielding winding.

In addition, the present invention automatically cuts off the overcurrent by the automatic recovery poly switch when an overcurrent (or surge voltage) is applied between the earth selection circuit and the shield winding, and automatically recovers the circuit without replacing parts when the overcurrent is removed. It has the effect of being.

1 is a front configuration diagram of the heating wire of the present invention.

2 is an exploded perspective view of the heating wire of the present invention.

3 is a circuit block diagram of an embodiment of the inventive electrothermal mat controller.

4 is a circuit diagram of one embodiment of the inventive electrothermal mat controller.

5 is a circuit diagram of another embodiment of the inventive electrothermal mat controller.

6 is an internal equivalent circuit diagram of a ground selection circuit of the present invention.

<Explanation of symbols for main part of two sides>

(1)-Cire (2) -Primary Insulation

(3) -secondary insulation member (4)-3rd insulation member

(HS)-Heating coil (HC)-Cold return section of the heating coil

(S1) (S2)-Sensor winding (H1) (H2)-Heating winding

(C1) (C2)-Shielding winding (C)-Temperature comparison

(T)-Trigger Rejection (PS)-Poly Switch

(TH)-switching element (SF)-fuse

(TF)-Temperature Fuse (SW)-Power Switch

(R1) (R2) (R3) (R4) (R6) (R7)-Resistance (R5)-Variable resistor

(C1)-(C7)-capacitor (ZD)-Zener diode

(D1)-(D4)-Diode (GROUND)-Ground

(G)-Ground Selection Circuit

Claims (2)

A heating wire composed of a sensor winding, a heating winding, and a shielding winding to shield and offset an electromagnetic field, and an AC power supply (AC 110V / 220V) connected in series with the heating winding and supplied to the heating winding by a control command A sensing temperature input unit for inputting a switching element, a temperature value of a sensor winding electrically sensing the heat generation degree of the heating winding, to a temperature comparing unit, a reference temperature setting unit for inputting a reference temperature set by a user to the temperature comparing unit, and A temperature comparison unit for outputting a control signal to generate a heating winding in a set temperature range by comparing the detected temperature with a reference temperature, a trigger unit for controlling a switching element according to a control signal output from the temperature comparison unit, and a circuit operation In the heat transfer mat controller consisting of a DC power supply for stably supplying the DC power required for the; The sensor winding which is located inside the heating winding and detects the electrical resistance that changes according to the heating temperature of the heating winding and inputs it to the temperature comparison unit, among the AC power terminal AC1 or other AC power terminal AC2 or ground terminal. Heating wire that shields and cancels the electromagnetic field formed by a ground selection circuit part (G) connected to the shielding winding by selecting one, and a poly switch (PS) connected between the ground selection circuit part (G) and the shielding winding to block overcurrent. Heat transfer mat controller using. A heating wire composed of a sensor winding, a heating winding, and a shielding winding to shield and offset an electromagnetic field, and an AC power supply (AC 110V / 220V) connected in series with the heating winding and supplied to the heating winding by a control command A sensing temperature input unit for inputting a switching element, a temperature value of a sensor winding electrically sensing the heat generation degree of the heating winding, to a temperature comparing unit, a reference temperature setting unit for inputting a reference temperature set by a user to the temperature comparing unit, and A temperature comparison unit for outputting a control signal to generate a heating winding in a set temperature range by comparing the detected temperature with a reference temperature, a trigger unit for controlling a switching element according to a control signal output from the temperature comparison unit, and a circuit operation In the heat transfer mat controller consisting of a DC power supply for stably supplying the DC power required for the; The sensor winding which connects the resistance R7 to the one-side sensor winding S2 and the AC power supply terminal AC1 located inside the heating winding, and inputs the temperature value detected by the electrical resistance change corresponding to the heating temperature to the temperature comparison unit, and the AC A ground selection circuit section (G) for selecting one of a power supply terminal (AC1) or another AC power supply terminal (AC2) or a ground terminal (GROUND) to be connected to the shield winding, and is connected between the ground selection circuit section (G) and the shield winding Heat transfer mat controller using a heating wire that shields and cancels an electromagnetic field formed by a poly switch (PS) that blocks overcurrent.