WO2023054809A1

WO2023054809A1 - Planar heating sheet using carbon thread as heating element

Info

Publication number: WO2023054809A1
Application number: PCT/KR2021/018208
Authority: WO
Inventors: 신석균
Original assignee: 지유엠아이씨 주식회사
Priority date: 2021-09-30
Filing date: 2021-12-03
Publication date: 2023-04-06
Also published as: KR20230046624A

Abstract

The present invention relates to a planar heating sheet using carbon thread as a heating element, wherein first carbon thread and second carbon thread, which generate high-temperature heat due to self-resistance when power is applied, are used, and current is made to flow in opposite directions in the first carbon thread and the second carbon thread, thus having the effects of offsetting magnetic fields and blocking electromagnetic waves, simplifying the manufacturing process, and preventing short circuiting between the carbon thread.

Description

Surface heating sheet using carbon yarn as a heating element

The present invention relates to a planar heating sheet, in particular, using a carbon fiber that generates high-temperature heat due to its own resistance when power is applied, while blocking electromagnetic waves to have a good effect on the user's health. It relates to a face heating sheet.

Heating devices that provide warmth by converting electrical energy into thermal energy, such as bed sheets, electric blankets, electric pads, electric mats, and electric pads, have a built-in face heating sheet that uses heat generated by the electrical resistance of the heating element when current is applied. there is.

However, due to the nature of emitting a certain amount of electromagnetic waves when current flows by supplying power to the face heating sheet, there is a high risk of adversely affecting the user's health, which not only acts as a cause to avoid using the face heating sheet, but also serves as a cause for avoiding the use of the face heating sheet. It has no choice but to adversely affect the marketability of the product.

For this reason, in recent years, carbon fiber known to have high electrical efficiency, relatively low generation of electromagnetic waves harmful to the human body, and emit far-infrared rays is mainly used as a heating element for face heating sheets, but this also cannot fundamentally prevent the generation of electromagnetic waves. There are limits.

The present invention has been made to solve the problems of the prior art, and can block electromagnetic waves by offsetting the magnetic field, simplify the manufacturing process, and use a carbon fiber as a heating element, which can prevent short circuits between carbon fibers. Its purpose is to provide

A planar heating sheet using carbon fiber as a heating element according to the present invention for solving the above problems includes a lower fabric; an upper fabric attached to an upper surface of the lower fabric; A plurality of first carbon yarns that are wired side by side at regular intervals between the lower fabric and the upper fabric, and both ends are folded upward and overlapped; A plurality of second carbon fibers that are wired side by side at regular intervals between the lower fabric and the upper fabric and alternately wired one by one with the first carbon fiber, but both ends are folded downward and overlapped; Attached one by one to both ends of the upper surface of the lower fabric, the end portion is folded upwards and overlapped to surround the end of the first carbon yarn, one of which is connected to the negative electrode of the power source to allow current to flow through the first carbon yarn. with a conductor; It is attached one by one to both ends of the bottom surface of the upper fabric, but the ends are folded downward and overlapped to surround the ends of the second carbon yarn, respectively, and one of them is connected to the positive electrode of the power source to allow current to flow through the second carbon yarn A second conductor that allows current to flow in the opposite direction to the direction in which current flows in 1 carbon yarn; and an insulator disposed between the first conductor and the second conductor.

Here, the distance between one first carbon yarn and one second carbon yarn forming a pair is formed to be smaller than the distance to the other neighboring pair.

And, the thermosetting adhesive film attached to the upper surface of the lower fabric and the lower surface of the upper fabric and attached between the first carbon yarn and the second carbon yarn; is configured to further include.

In addition, the thermosetting adhesive film is divided into pieces and arranged in a straight line along the longitudinal direction of the first carbon yarn and the second carbon yarn.

The planar heating sheet using the carbon yarn of the present invention configured as described above as a heating element has the advantage of blocking electromagnetic waves by canceling the magnetic field by allowing current to flow in opposite directions in the first carbon yarn and the second carbon yarn.

In the prior art, conductors were provided on the top and bottom of each carbon fiber, and then folded upward or downward, but in the present invention, only one conductor was provided on the top or bottom of the carbon fiber, and then folded and overlapped. There is an advantage in that the thickness is thinner compared to the sheet, and there is an advantage in preventing the phenomenon of exhaustion to the user's skin by such a thin thickness.

In addition, in a state where the lengths of the first carbon fiber and the first conductor attached to each other and the second carbon fiber and the second conductor attached to each other are matched, the first carbon fiber and the first conductor are folded upward, and the second carbon fiber and the second conductor are folded in an upward direction. Since the planar heating sheet is manufactured by folding the second conductor in a downward direction and inserting an insulator therebetween, there is an advantage in simplifying the manufacturing process.

In addition, the magnetic field canceling effect is achieved by making the distance between a pair of first and second carbon yarns wired adjacently while making the current flow in the opposite direction between the first carbon fiber and the second carbon fiber smaller than the distance between the other adjacent pair. can be maximized.

In addition, by attaching a thermosetting adhesive film between the first carbon yarn and the second carbon yarn, there is an advantage in preventing a short circuit between the carbon yarns.

1 is a diagram showing the disassembly of a planar heating sheet using a carbon yarn as a heating element according to the present invention.

Figure 2 is a view showing a combination of the planar heating sheet shown in Figure 1;

Figure 3 is an enlarged view of an important part of the planar heating sheet shown in Figure 2;

Figure 4 is a view showing the current flow of the planar heating sheet using the carbon yarn as a heating element according to the present invention.

Figure 5 is a diagram simply showing the process of manufacturing a planar heating sheet using a carbon yarn as a heating element according to the present invention.

Hereinafter, an embodiment of a planar heating sheet using carbon yarn as a heating element according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the disassembly of a planar heating sheet using carbon yarn as a heating element according to the present invention, FIG. 2 is a view showing the combination of the planar heating sheet shown in FIG. 1, and FIG. 3 is shown in FIG. It is an enlarged view of an important part of the planar heating sheet.

And, Figure 4 is a view showing the current flow of the planar heating sheet using the carbon yarn according to the present invention as a heating element.

In addition, Figure 5 is a diagram showing a simple process of manufacturing a planar heating sheet using a carbon yarn as a heating element according to the present invention.

The planar heating sheet using carbon yarn as a heating element according to the present invention includes a lower fabric 10, an upper fabric 20 attached to the upper surface of the lower fabric 10, the lower fabric 10 and the upper fabric 20 ) A plurality of first carbon yarns 30 wired side by side at regular intervals between, and a plurality of second carbon yarns 40 wired in parallel at regular intervals between the lower fabric 10 and the upper fabric 20 ) And, the first conductor 50 attached one by one to both ends of the upper surface of the lower fabric 10, the second conductor 60 attached one by one to both ends of the lower surface of the upper fabric 20, and the first Includes an insulator 70 disposed between the conductor 50 and the second conductor 60, and a thermosetting adhesive film 80 attached to the upper surface of the lower fabric 10 and the lower surface of the upper fabric 20 It is composed by

The upper fabric 20 of the lower fabric 10 has a certain width and length and is made of thin cloth or film, and is free to bend or bend. The lower fabric 10 and the upper fabric 20 are made of fabrics such as glass fiber, synthetic fiber, natural fiber, synthetic leather, full-length leather, PE, PET, etc. that can stably withstand high-temperature heat, or a high-temperature film. , It can be formed into an electrical insulator that can maintain shape stability without melting during thermal compression processing.

The first carbon yarn 30 generates high-temperature heat due to its resistance when external power is applied, and both ends are controlled by the adhesive A applied to the upper surface of the first conductor 50. 1 It is attached to the conductor 50, and the middle portion excluding both ends is attached to the lower fabric 10 by the adhesive (B) applied to the upper surface of the lower fabric 10. Both ends of the first carbon yarn 30 attached to the first conductor 50 are folded upward and overlapped.

Like the first carbon yarn 30, the second carbon yarn 40 generates high-temperature heat due to its resistance when external power is applied, and both ends are applied to the bottom surface of the second conductor 60. It is attached to the second conductor 60 by the applied adhesive (C), and the middle part except for both ends is attached to the upper fabric 20 by the adhesive (D) applied to the upper surface of the upper fabric 20. . Both ends of the second carbon yarn 40 attached to the second conductor 60 are folded downward and overlapped.

In other words, the first carbon yarn 30 and the second carbon yarn 40 are alternately wired one by one from one end of the lower fabric 10 and the upper fabric 20 toward the other end. At this time, the distance D1 between one first carbon yarn 30 and one second carbon yarn 40 constituting a pair is smaller than the distance D2 with the other adjacent pair.

In more detail, when one first carbon yarn 30 and one second carbon yarn 40 adjacent to each other at a certain distance D1 are viewed as a pair, this pair is the lower fabric 10 and the lower It is arranged at regular intervals (D2) between the fabrics (10).

That is, when the carbon fibers are wired in the order of the first carbon thread 30, the second carbon thread 40, the first carbon thread 30, the second carbon thread 40, the first carbon thread 30... , If the distance between the first carbon yarn 30 and the second carbon yarn 40 is D1 and the distance between the second carbon yarn 40 and the first carbon yarn 30 is D2, between the carbon yarns The distance of becomes D1, D2, D1, D2..., and at this time, D1 < D2.

A total of two first conductors 50 are installed, one at each end of the upper surface of the lower fabric 10, one of which is connected to the cathode or anode of the power source to allow current to flow through the first carbon company 30, The end portion is folded upward and overlaps to surround the end portion of the first carbon yarn 30 .

That is, the bottom surface of the first conductor 50 is attached to the upper surface of the lower fabric 10 by the adhesive (B), and the upper surface of the first conductor 50 is attached to the first carbon yarn by the adhesive (A). 30) and attached to the end.

A total of two second conductors 60 are installed on both ends of the lower surface of the upper fabric 20, one of which is connected to the positive or negative electrode of the power source to allow current to flow through the second carbon yarn 40. That is, when the first conductor 50 is connected to the negative electrode of the power source, the second conductor 60 is connected to the positive electrode of the power source, and when the first conductor 50 is connected to the positive electrode of the power source, the second conductor 60 ) is connected to the negative electrode of the power source, the direction in which the current flows in the first carbon yarn 30 and the direction in which the current flows in the second carbon yarn 40 are in opposite directions.

The end portion of the second conductor 60 is folded downward and overlapped to surround the end portion of the second carbon yarn 40 .

That is, the upper surface of the second conductor 60 is attached to the lower surface of the lower fabric 10 by the adhesive D, and the bottom surface of the second conductor 60 is attached to the second carbon yarn by the adhesive C. 40) is attached to the end.

The insulator 70 is disposed at both ends of the lower fabric 10 and the upper fabric 20, respectively, between the first conductor 50 and the second conductor 60 and between the first carbon yarn 30 and It is disposed between both ends of the second carbon thread 40. Accordingly, the current flowing between the first conductor 50 and the first carbon fiber 30 and the current flowing between the second conductor 60 and the second carbon fiber 40 do not affect each other.

The thermosetting adhesive film 80 is attached to the upper surface of the lower fabric 10 and the lower surface of the upper fabric 20, and is attached between the first carbon yarn 30 and the second carbon yarn 40. The thermosetting adhesive film 80 is firmly adhered to the lower fabric 10 and the upper fabric 20 by being pressurized/heated by a hot roller or the like.

Therefore, both ends of the first carbon thread 30 and the second carbon thread 40 are prevented from being synthesized by the insulator 70, and the first carbon thread 30 and the second carbon fiber thread excluding both ends are prevented from being synthesized. The middle portion of the main body 40 is prevented from being short-circuited between the first carbon yarn 30 and the second carbon yarn 40 by the thermosetting adhesive film 80 .

In other words, the thermosetting adhesive film 80 may be divided into pieces and arranged in a straight line along the longitudinal direction of the first carbon yarn 30 and the second carbon yarn 40, or a long tape not in the form of a piece. It may be manufactured in the form of a long arrangement along the longitudinal direction of the first carbon yarn 30 and the second carbon yarn 40 .

The present invention relates to a planar heating sheet using carbon yarn as a heating element, and is used in products such as bed sheets, electric blankets, electric blankets, and electric mats to provide warmth, so it can be widely used in industries producing such thermal products. .

Claims

The lower fabric 10 and;

an upper fabric 20 attached to an upper surface of the lower fabric 10;

A plurality of first carbon yarns 30 that are wired side by side at regular intervals between the lower fabric 10 and the upper fabric 20, but both ends are folded upward and overlapped;

While being wired side by side at regular intervals between the lower fabric 10 and the upper fabric 20, a plurality of second carbon yarns that are alternately wired with the first carbon yarns 30 one by one, but both ends are folded downward and overlapped. (40) and;

It is attached one by one to both ends of the upper surface of the lower fabric 10, but the ends are folded upwards and overlapped to surround the end of the first carbon yarn 30, one of which is connected to the negative electrode of the power source, and the first carbon yarn a first conductor (50) through which current flows through (30);

It is attached one by one to both ends of the bottom surface of the upper fabric 20, but the ends are folded downward and overlapped to surround the ends of the second carbon yarn 40, respectively, and one of them is connected to the positive electrode of the power supply to the second car. A second conductor 60 that allows current to flow in the main office 40 but in a direction opposite to the direction in which the current flows in the first carbon company 30;

A planar heating sheet using carbon yarn as a heating element, characterized in that composed of; an insulator 70 disposed between the first conductor 50 and the second conductor 60.
The method of claim 1,

A distance (D1) between one first carbon yarn (30) and one second carbon yarn (40) constituting a pair of carbon yarns, characterized in that formed smaller than the distance (D2) with the other neighboring pair. A surface heating element used as a heating element.
The method of claim 1,

A thermosetting adhesive film 80 attached to the upper surface of the lower fabric 10 and the lower surface of the upper fabric 20 and attached between the first carbon yarn 30 and the second carbon yarn 40; further included. A planar heating element using a carbon yarn as a heating element, characterized in that composed of.
The method of claim 3,

The thermosetting adhesive film 80 is divided into pieces and arranged in a straight line along the longitudinal direction of the first carbon yarn 30 and the second carbon yarn 40. .