KR200307950Y1 - electric heat system using the low voltage - Google Patents

Abstract

purpose:

In particular, it is intended to eliminate the risk of electric leakage and electric shock caused when using the electric heating system in a place with high humidity, such as a plastic house, outdoors or on the ground.

Configuration:

1. a mat structure M having a heater 4 and a sensor 6,

2. Temperature controller (Tc) ,

① Power switch (sw) ② Power connection indicator (10)

③DC converter 12 ④12V constant voltage section 14

⑤Comparators (16) ⑥Portal Couplers (18)

⑦ Temperature setter (20) ⑧ Switchgear (22)

⑨Transformer (24)

Action:

The 110V / 220V power is supplied to the primary of the transformer 24 and the DC converter 12 by turning on the power switch sw.

Accordingly, the DC voltage of 12V without voltage fluctuation can be obtained through the DC converter 12 and the 12V constant voltage unit 14.

This is supplied to the comparator 16 as a power source, and the comparator 16 compares the signal input from the sensor 6 of the mat structure M with the value set by the temperature setter 20 and points 'B'. When the potential of the 'A' point becomes lower than the potential, the potential of the 'C' is set to the + potential, thereby turning off the 'LED' of the photocoupler 18.

Therefore, the 'triac' of the photocoupler 18 is turned off, and eventually, the switch 22 does not trigger the 'gate', so that the secondary voltage of the transformer 24, which is 30 V, is applied to the heater 4 of the mat structure M. ) Will not be supplied.

On the contrary, when the 'A' point potential becomes higher (+) than the 'B' point potential of the comparator 16, the 'C' point has a-potential, thereby turning on the 'LED' of the photocoupler 18. Therefore, the 'triac' of the photocoupler 18 is turned on, and eventually triggers the gate 22 of the switch 22, so that the secondary voltage of the transformer 24 of 30V is applied to the heater 4 of the mat structure M. Will be supplied to

Description

Electric heat system using the low voltage}

The present invention relates to an electrothermal heating system using a low voltage, and more particularly to an electrothermal heating system configured to generate heat by a low voltage of 30V or less.

In recent years, in addition to the traditional heating system, electric blankets, blankets, electric cushions and mats are widely used as a heating system, and as shown in FIG. 1, a power source 52 of 110 / 220V is directly connected to the heater 54. The temperature controller 56 is connected to each other to control the temperature.

Reference numeral '58' is a 'sensor' provided to detect the heating temperature of the heater 54 and the heater 54, '60' is electrically connected to the temperature controller 56, the temperature controller ( 56 is a 'control device' which controls the current interruption state applied to the heater 54 in consideration of the value obtained by operating 56) and the value detected from the temperature sensor 58. FIG.

By the way, the conventional heating system as described above has a structure that controls the temperature by supplying a commercial voltage of 110V / 220V directly to the heater, which includes the risk of electric leakage and electric shock.

The present invention was devised to improve this, and an object of the present invention is to enable a secondary voltage of a transformer to be supplied to a heater at a low voltage of 30 V or less, by using a transformer inductively coupled in a completely insulated state, Accordingly, the present invention aims to provide an electrothermal heating system using a low voltage, so that there is no fear of electric leakage or electric shock.

1 is a block diagram schematically showing the configuration of an example of a conventional electrothermal heating system;

Figure 2 is a block diagram for schematically showing the configuration of the electrothermal heating system according to the present invention,

3 is a circuit diagram showing in detail the configuration of the electrothermal heating system according to the present invention.

* Description of Signs of Major Parts of Drawings *

2: power 4: heater

6: sensor M: mat structure

Tc: Temperature controller sw: Power switch

10: power connection indicator 12: DC converter

14: 12V constant voltage section 16: comparator

18: Porter coupler 20: Temperature setter

22: switchgear 24: transformer

In order to achieve the above object, the present invention provides a mat structure (M) having a heater (4) and a sensor (6), and a temperature controller (Tc) electrically connected to the heater (4) of the mat structure (M). In the electrothermal heating system consisting of, the temperature controller (Tc), the power switch (sw) electrically connected to the power supply (2) of 110V / 220V; A power connection indicator 10 electrically connected to the power switch sw; A direct current converter (12) for converting an alternating current passing through the power connection indicator (10) into direct current; A 12V constant voltage unit 14 electrically connected to the DC converter 12 to maintain and output a DC output from the DC converter 12 at a stable voltage of 12V; The heater 4 which is electrically connected to the 12V constant voltage unit 14 so as to use the 12V voltage applied from the 12V constant voltage unit 14 as the comparator 16 power, and is output from the sensor 6. A comparator 16 electrically connected to the sensor 6 such that a sensed value of the heating temperature state is input to the 'A' point; The port coupler 18 and the switch 22 electrically connected to the 'C' point of the comparator 16 to perform the current interruption function according to the value output to the 'C' point of the comparator 16. ); A temperature setter 20 electrically connected to the point 'B' of the comparator 16 so that the temperature set value output therefrom is input to the point 'B' of the comparator 16; The power switch sw and the primary coil are electrically connected to the 110V / 220V voltage to a low voltage of 30V, and the secondary coil is inductively coupled to the primary coil and the insulating structure as described above. It provides a heat transfer heating system using a low voltage, characterized in that the secondary coil is configured to include; a transformer (24) electrically connected to the switch (22).

(Example)

Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings, in which like reference numerals designate like parts as in the prior art.

2 is a block diagram illustrating a schematic configuration of an electrothermal heating system according to the present invention, and FIG. 3 is a circuit diagram of the electrothermal heating system according to the present invention.

One embodiment of the present invention, the heater (4) by supplying a controlled current to the mat structure (M) having a heater (4) and a sensor (6), and the heater (4) embedded in the mat structure (M) It relates to a heat transfer heating system composed of a temperature controller (Tc) electrically connected to the heater (4) to enable the heat transfer function.

On the other hand, the temperature controller Tc as described above includes a power switch sw, a power connection indicator 10, a DC converter 12, a 12V constant voltage unit 14, a comparator 16, and a porter. The coupler 18 and the switch 22, the temperature setter 20, and the transformer 24 are comprised.

That is, the power switch sw is electrically connected to 110V / 220V to enable on / off operation, and the power connection indicator 10 made of a light emitting element such as an LED is electrically connected to the power switch sw. Connected to indicate whether or not current is being applied from the power source 2 described above.

In addition, the DC converter 12 electrically connected to the power connection indicator 10 has a structure including a plurality of diodes (D1), (D2), (D3), and D4, and performs alternating current passing through the power connection indicator (10). It is configured to convert to DC.

The direct current output from the DC converter 12 is maintained by the 12V constant voltage unit 14 made of the zener diode at a stable voltage of 12V so as to be output.

In addition, the comparator 16 is electrically connected to the 12V constant voltage unit 14, the sensor 6 and the temperature setter 20, etc., so that the DC voltage of 12v can be supplied with a stable power source. In addition, the sensing value for the heating temperature state of the heater 4 is input to the 'A' point, and the temperature set value from the temperature setter 20 is input to the 'B' point to compare and calculate these input values. The result is to be output.

In addition, the porter coupler 18 electrically connected to the point 'C' of the comparator 16 has a general structure that triggers the gate by turning on / off the triac as the LED blinks. In accordance with the control the operation of the switch 22 is provided to be connected to the porter coupler (18).

In addition, the switch 24 and the transformer 24 as described above, which is electrically connected between the heater 4 and the power switch sw, has an insulating coupling structure for inducing alternating current of 110V / 220V to a low voltage of 30V. It is provided.

That is, the power switch sw and the primary coil are electrically connected to each other so that the voltage of the power source 2 passing through the power switch sw can be stepped down to a low voltage of 30 V. The secondary coil is inductively coupled to the insulating coil, and the secondary coil is electrically connected to the switch 22.

The temperature setter 20 is electrically connected to the point 'B' of the comparator 16.

The electrothermal heating system according to the present invention configured as described above supplies 110V / 220V power to the primary of the transformer 24 and the DC converter 12 by turning on the power switch sw.

Accordingly, the DC voltage of 12V without voltage fluctuation can be obtained through the DC converter 12 and the 12V constant voltage unit 14.

This is supplied to the comparator 16 as a power source, and the comparator 16 compares the signal input from the sensor 6 of the mat structure M with the value set by the temperature setter 20 and points 'B'. When the potential of the 'A' point becomes lower than the potential, the potential of the 'C' is set to the + potential, thereby turning off the 'LED' of the photocoupler 18.

Therefore, the 'triac' of the photocoupler 18 is turned off, and eventually, the switch 22 does not trigger the 'gate', so that the secondary voltage of the transformer 24, which is 30 V, is applied to the heater 4 of the mat structure M. ) Will not be supplied.

On the contrary, when the 'A' point potential becomes higher (+) than the 'B' point potential of the comparator 16, the 'C' point has a-potential, thereby turning on the 'LED' of the photocoupler 18. Therefore, the 'triac' of the photocoupler 18 is turned on, and eventually triggers the gate 22 of the switch 22, so that the secondary voltage of the transformer 24 of 30V is applied to the heater 4 of the mat structure M. Will be supplied to

As described above, the heating system according to the present invention has an advantage in that the secondary voltage of the transformer can be supplied to the heater at a low voltage of 30 V or less, thereby eliminating the risk of electric leakage and electric shock.

Claims (1)

In the electrothermal heating system composed of a mat structure (M) having a heater (4) and a sensor (6) and a temperature controller Tc electrically connected to the heater (4) of the mat structure (M), Temperature controller (Tc) A power switch sw electrically connected to a power supply 2 of 110V / 220V; A power connection indicator 10 electrically connected to the power switch sw; A direct current converter (12) for converting an alternating current passing through the power connection indicator (10) into direct current; A 12V constant voltage unit 14 electrically connected to the DC converter 12 to maintain and output a DC output from the DC converter 12 at a stable voltage of 12V; An exothermic temperature of the heater 4 which is electrically connected to the 12V constant voltage unit 14 and output from the sensor 6 so as to use a 12V voltage applied from the 12V constant voltage unit 14 as its power source. A comparator 16 electrically connected to the sensor 6 such that a sensed value of the state is inputted to the 'A' point; The port coupler 18 and the switch 22 electrically connected to the 'C' point of the comparator 16 to perform the current interruption function according to the value output to the 'C' point of the comparator 16. ); A temperature setter 20 electrically connected to the point 'B' of the comparator 16 so that the temperature set value output therefrom is input to the point 'B' of the comparator 16; The power switch sw and the primary coil are electrically connected to the 110V / 220V voltage to a low voltage of 30V, and the secondary coil is inductively coupled to the primary coil and the insulating structure described above. The secondary coil is a transformer (24) electrically connected to the switch (22); characterized in that it comprises a, the heat transfer heating system using a low voltage.