KR200310609Y1 - Hot wire control device using DC power - Google Patents

Abstract

The present invention prevents generation of electromagnetic waves by rectifying general household AC power to DC power, and prevents generation of electromagnetic waves, and improves stability of temperature control by supplying a constant voltage. As a heat ray control device using a power source,

It is connected between 220V / 60Hz driving power used for general heater and zigzag and heating wire which is reciprocally arranged to generate heat according to the power supply, and supplies AC power by rectifying DC power. In the hot wire control device using a DC power source; Bridge diode which consists of four diodes to rectify the AC power supplied from the driving power source into a DC power source, and is connected in series between the output terminal of the bridge diode to perform a smoothing of the output voltage. At the same time, the first and second capacitors (C1, C2) for performing the divided voltage, the silicon control rectifier (SCR1) is connected in parallel to the first capacitor (C1) and serves as a switch for determining the overall circuit operation; And a transistor Q1 that is turned on / off according to an external control signal B and outputs a control signal to a gate terminal of the silicon control rectifier SCR1.

Description

Heat wire control device using DC power supply {omitted}

The present invention relates to a heating wire control device using a direct current power source, and more particularly, an electric mat, an electric field plate having direct contact with a human body by constructing a circuit capable of removing electromagnetic waves from the heater body without changing the structure of the heater body. The present invention relates to a heat ray control device using a direct current power source such that the use of an electric heater is harmless to a human body.

Looking at the configuration and operation of the heater body and the temperature controller, such as a conventional electric plate and electric yoke, the heating wire and the heating wire for sensing the heat generated from the heating wire is covered with an insulator to form a cable for one heat generating unit of the heater body It is arranged zigzag inside. Then, a temperature controller is connected to the heater body to adjust the temperature.

Here, the heat sensitive wire has a negative temperature coefficient characteristic. When the temperature of the heating wire rises, the resistance of the heat sensitive wire decreases, and when the temperature of the heating wire decreases, the resistance of the heat sensitive wire increases. Therefore, when the resistance of the thermal line is increased or decreased, the current flowing in the thermal line is reduced or increased.

In brief operation, when the temperature of the heating wire becomes high, the resistance value of the heating wire decreases, and accordingly, the application time of the voltage supplied to the heating wire is delayed, so that a small amount of power is supplied to the heating wire, and thus the temperature of the heating wire is changed over time. Will be lowered accordingly. When the temperature of the heating wire is lowered, the resistance value of the thermal wire is increased, and accordingly, the time for applying the voltage supplied to the heating wire is shortened, so that a greater amount of power is supplied to the heating wire, and the temperature of the heating wire is increased over time. Will increase.

However, in the electric heaters such as the electric blanket and electric yoke according to the prior art as described above, since AC power used in a general home is directly supplied and has a structure in which a heating wire generates heat by receiving the power, it is possible to prevent generation of harmful electromagnetic waves. There is a problem that there is no.

In addition, by using an AC power supply with low stability of a constant voltage supply, a constant voltage is not supplied to the heating wire, and accordingly, it is difficult for the consumer to control the temperature of the heating wire to a desired temperature, causing consumer complaints. There is this.

The present invention has been made to solve the above problems, the purpose is to prevent the generation of electromagnetic waves by supplying the heating wire after rectifying the general household AC (AC) power to DC (DC) power, supplying a constant voltage This is to provide a heat ray control device using a DC power supply to improve the stability of the temperature control to be made.

In addition, another object of the present invention is a heating wire using a DC power supply to improve the accuracy of the operation by using a silicon controlled rectifier (SCR) as a switch means for determining the overall operation of the circuit according to the external control signal To provide a control device.

According to a preferred feature of the present invention for achieving the above object, it is connected between a 220V / 60Hz driving power used in a general heater and a zigzag reciprocating arrangement between the heating wire (heat wire) that generates heat in accordance with the power supply In the hot wire control device using a DC power supply for rectifying and supplying AC power to DC power,

A bridge diode which consists of four diodes and performs rectification of AC power supplied from the driving power source into a direct current (DC) power source, and is connected in series between the output terminal of the bridge diode to perform smoothing of the output voltage. At the same time, the first and second capacitors (C1, C2) for performing the divided voltage, the silicon control rectifier (SCR1) is connected in parallel to the first capacitor (C1) and serves as a switch for determining the overall circuit operation; A hot wire control device using a DC power supply comprising a transistor (Q1) to be turned on / off according to an external control signal (B) to output a control signal to the gate terminal of the silicon control rectifier (SCR1). to provide.

1 is a circuit diagram showing the configuration of a heat ray control device using a DC power supply according to the present invention

<Explanation of symbols for main parts of drawing>

10: driving power source 20: heat wire

30 controller 31 bridge diode

32: Fuse

C1, C2: Capacitor

SCR1: silicon controlled rectifier

Q1: transistor

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a circuit diagram showing the configuration of a heat ray control device using a DC power supply according to the present invention.

Referring to FIG. 1, reference numeral 10 denotes a driving power of 220V / 60Hz used for a heater in a general household, and 20 denotes a heating wire zigzag arranged in a reciprocating manner to generate heat according to the supply of power. A heat plate represents a heat plate, and 30 represents a controller connected between the driving power source 10 and the heating wire 20 to rectify and supply AC power to DC power.

The controller 30 is composed of one module, and is provided with four input / output terminals. In this case, ① and ② terminals are connected to the driving power source 10 and used as power input terminals, and ③ and ④ terminals are connected to the heating wire 20 and used as power output terminals.

Looking at the internal configuration of the controller 30, reference numeral 31 denotes a bridge diode consisting of four diodes to perform rectification from the alternating current (AC) power supplied from the driving power source 10 to a direct current (DC) power source. , 32 represents a fuse (FUSE) that is connected to the power input terminal ① is automatically opened when the overvoltage is applied to block the flow of current to protect the circuit.

In addition, reference numerals C1 and C2 denote first and second capacitors connected in series between the output terminals of the bridge diode 31 to perform smoothing of the output voltage and at the same time divide voltage, and SCR1 denotes the first capacitor. A silicon controlled rectifier connected in parallel to C1 and serving as a switch for determining overall circuit operation, and Q1 is turned on / off in response to an external control signal B. A transistor for outputting a control signal to the gate terminal of the silicon controlled rectifier SCR1 is shown. At this time, both ends of the second capacitor C2 are connected to the power output terminals ③ and ④ terminals, respectively.

The silicon controlled rectifier (SCR1) is composed of three terminals, an anode, a cathode, and a gate. When a signal is applied to the gate, a current flows between the anode and the cathode. No current flows between the and cathode and high voltage is maintained. The structure generally has a p-n-p-n four-layer structure, can withstand a voltage of 6000V or more, and can control a current of 3000A or more.

Meanwhile, reference numerals R1, R2, R3, R4, R5, R6, and R7 denote resistance, T denotes a transformer, and ZD1 denotes a zener diode.

Briefly describing the operation of the present invention having the configuration as described above are as follows.

When the external control signal B is input, the transistor Q1 is turned on, and thus a signal is input to the gate terminal of the silicon control rectifier SCR1. When the gate signal is input, a current flows between the anode and the cathode of the silicon control rectifier SCR1, and the entire circuit is started.

At this time, AC power supplied from the driving power source 10 is rectified from the bridge diode 31 to DC power to perform smoothing, and then output to the heating wire 20 to prevent generation of electromagnetic waves. It is possible to supply a stable and stable voltage.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention defined in the appended claims.

As described above, the heating wire control apparatus using a DC power supply according to the present invention is to prevent the generation of electromagnetic waves by supplying the heating wire after rectifying the AC power to a general household AC (DC) power supply, supplying a constant voltage By doing this, it is possible to improve the stability of the temperature control, there is an effect that can improve the satisfaction of consumers.

Claims (1)

It is connected between 220V / 60Hz driving power used for general heater and zigzag and heating wire which is reciprocally arranged to generate heat according to the power supply, and supplies AC power by rectifying DC power. In the hot wire control device using a DC power source, Bridge diode which consists of four diodes to rectify the AC power supplied from the driving power source into a DC power source, and is connected in series between the output terminal of the bridge diode to perform a smoothing of the output voltage. At the same time, the first and second capacitors (C1, C2) for performing the divided voltage, the silicon control rectifier (SCR1) is connected in parallel to the first capacitor (C1) and serves as a switch for determining the overall circuit operation; A transistor (Q1) configured to be turned on / off according to an external control signal (B) and output a control signal to a gate terminal of the silicon control rectifier (SCR1). Hot wire control device.