KR100378432B1 - Carbon polymer Heater for mat - Google Patents

Abstract

This invention is an invention in which a carbon polymer having good positive temperature characteristics is introduced into a mat heater according to the present invention, and is connected to both sides of a linear heating element carbon polymer (3) arranged in an insulator coating (5) and a carbon polymer (3). Electrodes 2, 4 for supplying a driving current to the carbon polymer 3, and the one electrode 2 is arranged in the form of a primary winding on the outer circumference of the center insulator 1 to form a linear carbon polymer ( 3) is connected to the inner surface, and at the same time, the other electrode 4 is connected in the form of a secondary winding to the outer circumference of the carbon polymer 3 to supply a driving current to the carbon polymer 3 and at the same time the two electrodes 2, 4 Carbon polymer heater for mats configured to attenuate electromagnetic waves leaking from The present invention provides a carbon polymer heater having good tensile strength and flexibility, and at the same time, eliminating the installation of an overheat protection switch, and attenuating electromagnetic waves by matching electrodes for supplying current to the carbon polymer with primary and secondary windings. To work.

Description

Carbon polymer heater for mat {

The present invention seeks to provide a carbon polymer heater for a mat for use in a mat for electric blankets, electric cushions, sleeping bags and the like.

Conventional heating element, which is one of the mat heating elements, generates electromagnetic waves by connecting the outer ends of the inner and outer layer conductors between the coil type inner and outer layer enameled copper wires to generate heat in the copper wires and to reverse the direction of the current flowing in the heating element. This heating element is used to offset the temperature, but using a temperature protector such as a bimetal switch to prevent overheating and using a semiconductor element temperature sensor for temperature control, which lowers the productivity of the final product. The temperature limit of the switch is narrow and at the same time, the temperature sensor detects the local temperature of the mat, and thus the temperature detection function is insufficient, and the production cost of the mat is increased by the use of a temperature rise prevention part and a temperature control part.

The heating element used in the conventional electric field rolled copper wire, and the primary winding is used as a heater for the heater, but the secondary winding is used as a sensor, but serious quality problems are raised because of poor insulation of the primary and secondary windings.

As another mat heating element, the planar heating element has excellent positive temperature resistance characteristics, but many disconnection defects are generated due to excessive flexibility of the heating element.

In order to solve the above problems, the present invention introduces a carbon polymer having a good positive temperature characteristic into a heater for a mat, and has a carbon polymer heater having good tensile strength and flexibility, and at the same time eliminating the installation of a thermal switch. The purpose is to provide.

Another object of the present invention is to provide a carbon polymer heater that operates to attenuate electromagnetic waves, such as in a magnetic field free wire.

1 is a partially cutaway perspective view of the inventive heater embodiment

2 is an enlarged cross-sectional view of the heater implementation of the present invention.

Figure 3 is a carbon polymer drive circuit diagram in the heater of the present invention

Fig. 4 is a graph of operating states of two constant temperature characteristic elements.

5 is a graph showing a specific temperature stable operation

6 is a graph of temperature vs. resistance characteristics of the inventive carbon polymer.

<Description of Drawing Major Symbols>

1: center insulator 2,4: electrode 3: carbon polymer 5: insulator coating

This invention is demonstrated according to attached drawing as follows.

1 and 2, the linear heating element carbon polymer 3 arranged in the insulator sheath 5 and the carbon polymer 3 are connected to both sides to supply driving current to the carbon polymer 3, as recited in Figs. Electrodes 2 and 4, and the one electrode 2 is arranged in the form of a primary winding on the outer circumference of the center insulator 1, connected to the inner surface of the linear carbon polymer 3, and at the same time the other electrode (4) is for mats configured to be connected to the outer periphery of the carbon polymer (3) in the form of a secondary winding to supply driving current to the carbon polymer (3) and to attenuate electromagnetic waves leaking from the two electrodes (2, 4). Carbon polymer heater.

FIG. 3 shows a state in which the carbon polymer 3 arranged as a linear heating element in the insulator sheath 5 is connected to a current through the electrodes 2 and 4, and FIGS. 1 and 2 are electrodes 2 and 4; The primary winding and the secondary winding of) are corresponded with the carbon polymer 3 interposed therebetween to reduce the leakage electromagnetic waves.

4 shows the operation of the two positive temperature characteristic elements.

One is that the variation in temperature and resistance values is directly proportional, and the resistance value changes with many temperature changes. Such a resistive element is not good because it cannot be expected to maintain a stable temperature as a heater for a mat aiming for a certain temperature stability as shown in FIG.

In FIG. 4, when the other element reaches a constant temperature, the resistance value rises rapidly, thereby achieving temperature stability with little change in temperature. Such a resistance element is applied to the mats and the driving time is controlled to maintain a constant temperature at a constant temperature as shown in FIG. This resistor has good characteristics as a heating element for mats.

In Fig. 6, temperature resistance characteristics of the carbon polymer 3 are cited as the resistors employed in this invention.

In FIG. 6, as the content (weight ratio) of carbon contained in the polymer is increased to 30%, 40%, or 60%, the temperature range in which the resistance value rapidly increases to 100 kΩ or more is increased as 45 ° C, 60 ° C, and 75 ° C. It is consistent with a resistor with good static temperature characteristics.

Inventive Examples 1, 2 and 3 are summarized in Table 1.

Table 1:

rescue Item standard Remarks Speaker material Example 1 Example 2 Example 3 GLASS Speaker diameter 0.6mm ± 10% Primary winding material Cu water 99.9% diameter 0.5mm Rolled to thickness 0.15mm Resistivity 10Ω / 18m 15Ω / 26m 16.5Ω / 30m Table 2 Graph Reference Winding S winding / Pitch 5mm Carbon polymer material Carbon, polymer Outer diameter 1.8mm ± 0.1mm thickness 0.45mm Secondary winding material Cu water 99.9% diameter 0.5mm Rolled to thickness 0.15mm Resistivity 15Ω / 18m 20Ω / 26m 22.5Ω / 30m Winding N winding / Pitch 5mm Insulation coating material Heat resistant PVC thickness 0.7mm diameter 3.2mm

Referring to Table 1, the present invention will be described in more detail as follows.

The center insulator 1 of FIG. 1 perspective view showing the internal structure of the carbon polymer heater is glass twisted yarn having an outer diameter of 0.6 mm having both flexibility and an insulated wire.

The one-side electrode 2 formed in the form of primary winding was a copper wire rolled with a thickness of 0.15mm, a wire diameter of 0.5mm, a purity of 99.9%, and a current resistance of 15Ω / 26m, and a pitch of 5mm and a winding direction 'S' winding. .

The linear carbon polymer 3 on the upper part of the primary winding has a linear ratio of 0.45 mm thick around the center insulator 1, in other words, homogeneously mixed with carbon in a polymer in a weight ratio of 15 to 80%. It is molded in a tubular shape. The carbon polymer 3 is in a state where the carbon particles are connected to each other at a low temperature, and has a low resistance value. When a current is supplied to the carbon polymer (3), a resistor circuit formed by carbon is formed in the resin (polymer) to generate heat. When the temperature of the polymer resin rises due to heat generation, the resin expands, and when the polymer resin reaches a constant expansion state, A gap is formed between the carbon particles to rapidly increase the resistance value, so that the current flowing through the polymer resin is nearly zero, thereby suppressing the temperature rise.

The electrode 4 arranged on the upper portion of the carbon polymer 3 in the form of a secondary winding is a copper wire having a thickness of 0.5 mm, a purity of 99.9%, and a current resistance of 20 Ω / 26 m with a thickness of 0.15 mm, a pitch of 5 mm, and a winding direction ' It was made to be N 'winding. The insulator coating 5 formed on the secondary winding was made of heat-resistant PVC (or silicone resin) with a thickness of 0.7 mm. The diameter of the heating element obtained as above was 3.2mm.

In order to reduce the resistance value of the primary and secondary windings, the length of the copper wire can be shortened and the diameter of the copper wire can be increased, but the heat emitted from the winding is effectively used for heating the mat and maintains practicality as a mat heater. For this purpose, the length of the copper wire is 18m, 26m, and 30m, the thickness of the copper wire is 0.5mm, and the rolling thickness of the copper wire is 0.15mm to optimize the diameter of the heater to about 3.2mm and at the same time, it is released by the composition of the primary and secondary windings. The electromagnetic wave can be attenuated.

The material, diameter, pitch, and length of the primary and secondary windings provided by the electrode can be arbitrarily selected within the resistance value as the electrode.

As described above, the present invention introduces a carbon polymer having good positive temperature characteristics into a heater for a mat, and provides a carbon polymer heater having good tensile strength and flexibility, and at the same time, eliminating the installation of a switch for preventing thermal transfer. The present invention provides a carbon polymer heater that operates to attenuate electromagnetic waves by matching an electrode for supplying current to the primary and secondary windings.

Claims (2)

In attenuating electromagnetic waves by matching the primary winding and the secondary winding, the carbon polymer (3) is connected to both sides of the linear heating element carbon polymer (3) arranged in the insulator coating (5) and the carbon polymer (3). Electrodes 2 and 4 for supplying a driving current to the electrodes, and the one electrode 2 is arranged on the outer circumference of the center insulator 1 in the form of a primary winding and connected to the inner surface of the linear carbon polymer 3. At the same time, the other electrode 4 is connected to the outer circumference of the carbon polymer 3 in the form of a secondary winding to supply a driving current to the carbon polymer 3 and simultaneously absorb electromagnetic waves leaked from the two electrodes 2 and 4. Carbon polymer heater for mats configured to attenuate. 2. The central insulator 1 is a glass twisted yarn having an outer diameter of 0.6 mm having both flexibility and an insulated wire, and one electrode 2 in the form of a primary winding has a current resistance of 15 Ω or less rolled to a thickness of 0.15 mm. The linear carbon polymer (3) is homogeneously mixed with carbon in the polymer at a weight ratio of 15 to 80%, and formed into a linear shape having a thickness of 0.45 mm on the upper portion of the central insulator (1). (4) is a conductive wire having a current resistance of 20 Ω or less rolled to a thickness of 0.15 mm, and the insulator coating (5) is a carbon polymer heater for mat composed of heat-resistant PVC.