KR102604024B1 - Electric sofa using surface heating element - Google Patents

Abstract

The present invention relates to an electric sofa using a planar heating element. By using a planar heating element made of carbon nanomaterial, the temperature inside the electric sofa using a planar heating element can be quickly raised. By using a planar heating element that operates at low power, the temperature can be increased. It is possible to reduce the amount of electrical energy consumed to raise The purpose is to improve electrical stability by increasing the contact surface area with the electric passage and minimize contact resistance with the wire.
The electric sofa using a planar heating element according to the present invention includes a housing including a floor, a ceiling, and a plurality of side walls; And it is installed on at least one of the floor, ceiling, and side walls, and includes a planar heating element that increases the internal temperature of the housing.

Description

Electric sofa using planar heating element {ELECTRIC SOFA USING SURFACE HEATING ELEMENT}

The present invention relates to an electric sofa using a planar heating element, and more specifically, by using a planar heating element made of carbon nanomaterial, the temperature inside the electric sofa using a planar heating element can be quickly raised, and the planar heating element that operates at low power is used. As it is used, the amount of electrical energy consumed to increase the temperature can be reduced, and by coating the glass disk that makes up the planar heating element with CNT ink, a heating layer with excellent electrical characteristics can be formed. This relates to an electric sofa using a planar heating element that can improve electrical characteristics and electrical stability by increasing the contact surface area.

In general, planar heating elements are known to have an excellent heat generation rate and low power consumption rate because they generate heat in an area compared to a normal heating wire method, and can reduce power consumption by 20 to 40%. They rarely generate harmful electromagnetic waves and have a smooth surface. It has high durability and is very useful.

Due to these various usefulness, planar heating elements are installed in heating mattresses, insulating materials, blankets, building walls, inside partitions, and home heating devices and used for heating, or installed on vehicle windows and used to prevent frost, etc. Applies to.

In addition, planar heating elements are also applied to agricultural equipment such as greenhouses and various anti-freeze devices that melt snow on roads or parking lots or prevent freezing.

Furthermore, planar heating elements are also applied to refrigeration display case surfaces, window systems, bathroom mirrors, home appliances, and sporting goods such as goggles.

In this conventional planar heating element, the + pole conductor and the - pole conductor are usually placed at regular intervals on both sides of the glass disk, these + pole conductors and the - pole conductor are energized, and the carbon carbon heating element is used. It is placed between the +pole conductor and the -pole conductor.

As a result, it is configured to obtain heat energy by generating heat in the carbon carbon heating element by electrical energy applied to the + electrode conductor and - electrode conductor.

However, the carbon carbon heating element applied to the conventional planar heating element has a problem in that the electrical characteristics and electrical stability are not excellent because the contact surface area between the electrical passage formed of silver paste and the carbon carbon heating element is not large.

Registered Patent Publication No. 10-1610307 (2016.04.01.)

The present invention can quickly increase the temperature of an electric sofa using a planar heating element using a planar heating element made of carbon nanomaterial, and by using a planar heating element that operates at low power, the amount of electrical energy consumed to increase the temperature is reduced. By coating CNT ink on the glass disk that makes up the planar heating element, a heating layer with excellent electrical properties can be formed, and the contact surface area with the electrical path can be increased through a heating layer with small carbon particles. The purpose is to provide an electric sofa using a planar heating element that can minimize contact resistance with wires while improving electrical stability.

An electric sofa using a planar heating element according to an embodiment of the present invention includes a frame; a seating portion disposed on the upper surface of the frame and on which the user sits; And it includes a planar heating element embedded in the seating area to maintain heat retention.

And, the planar heating element includes a glass disk on which electrodes are formed; and a heating layer coated with CNT ink on the glass disc to generate heat by applying electricity, wherein the heating layer includes a heating unit on which the glass disc is seated, a reciprocating drive unit disposed on one side and the other of the heating unit, and , a heating and applicator including a trolley that reciprocates on the top of the glass disk seated on the heating unit by the reciprocating drive unit, and a spray unit that is mounted on the trolley and sprays CNT ink on the glass disk. The CNT ink is formed as the heating layer by evaporating the moisture contained in the glass plate while the glass plate is heated or sprayed simultaneously with heating.

In addition, it is attached to the glass plate through a PVB film and further includes a protective glass on which at least one of a picture, text, or logo is printed.

The electric sofa using a planar heating element according to the present invention can quickly increase the temperature inside the electric sofa using a planar heating element by using a planar heating element made of carbon nanomaterial, and by using a planar heating element that operates at low power, the temperature is lowered. The amount of electrical energy consumed to raise the temperature can be reduced, and a heating layer with excellent electrical properties can be formed by coating the glass disk that makes up the planar heating element with CNT ink. A heating layer with physical properties of small carbon particles can be formed. This has the effect of increasing the contact surface area with the electric passage, improving electrical stability while minimizing contact resistance with the wire.

Figure 1 is a diagram showing an electric sofa using a planar heating element according to an embodiment of the present invention.
Figure 2 is a block diagram showing the sequence of the planar heating element applied to the electric sofa using the planar heating element according to an embodiment of the present invention.
Figure 3 is a side view showing the process of washing and drying a glass disk through a washing dryer applied to an electric sofa using a planar heating element according to an embodiment of the present invention.
Figure 4 is a front view showing a heat processor and cooler applied to an electric sofa using a planar heating element according to an embodiment of the present invention.
Figure 5 is a front view showing a heating and applicator applied to an electric sofa using a planar heating element according to an embodiment of the present invention.
Figure 6 is a cross-sectional view showing a state in which a conductive material, a heating layer, and a protective glass are laminated on a glass disk applied to an electric sofa using a planar heating element according to an embodiment of the present invention.
Figure 7 is a front view showing a state in which a conductive material, a heating layer, an electric wire, and a protective glass are applied to a glass disk applied to an electric sofa using a planar heating element according to an embodiment of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to be understood by those skilled in the art. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Throughout the specification, similar parts are given the same reference numerals.

Figure 1 is a diagram showing an electric sofa using a planar heating element according to an embodiment of the present invention, and Figure 2 is a block diagram showing the sequence of an electric sofa using a planar heating element according to an embodiment of the present invention. 3 is a side view showing the process of washing and drying a glass disk through a washing dryer applied to an electric sofa using a planar heating element according to an embodiment of the present invention, and Figure 4 is a planar heating element according to an embodiment of the present invention. It is a front view showing a heat treater and a cooler applied to an electric sofa used, and Figure 5 is a front view showing a heating and applicator applied to an electric sofa using a planar heating element according to an embodiment of the present invention, and Figure 6 is an embodiment of the present invention. It is a cross-sectional view showing a state in which a conductive material, a heating layer and a protective glass are laminated on a glass plate applied to an electric sofa using a planar heating element according to an embodiment, and Figure 7 is an electrical diagram using a planar heating element according to an embodiment of the present invention. This is a front view showing the state in which the conductive material, heating layer, wires, and protective glass are applied to the glass plate applied to the sofa.

The electric sofa 100 using a planar heating element according to an embodiment of the present invention can be provided to the user by quickly raising the temperature using a planar heating element (P), a carbon nanomaterial, and operates at low power. This product can reduce the amount of electrical energy consumed to increase temperature by using (P).

To this end, the electric sofa 100 using a planar heating element according to an embodiment of the present invention may include at least one or more of a frame 110, a seating portion 120, and a planar heating element (P).

The frame 110 may be formed to have an approximately “L” cross-sectional shape.

Additionally, a backrest 111 is formed at the rear of the frame 110 to support the user's back.

In addition, armrests may be formed on both edges of the frame 110 to support the user's arms.

The frame 110 includes a seating portion, and the seating portion 120 is disposed on the upper surface of the seating portion.

The seating unit 120 includes an outer shell 121 and a cushion layer 122 filled with the inside of the outer shell 121 and formed of a cushion cushioning material.

Additionally, the cushion layer 122 can be completed by selectively combining cushion cushioning materials such as P, E, Foam, urethane, felt, sponge, cotton, sponge, etc.

The planar heating element (P) may be embedded in the seating portion 120 to maintain heat.

The planar heating element (P) includes a power input plug that is electrically connected to an outlet, which allows it to operate by receiving external power.

This planar heating element (P) may be embedded within the cushion layer 122.

In this case, the planar heating element (P) indirectly provides heat to the user seated in the seating unit 120 through the heating operation, and can also provide a cushioning feeling through the cushion layer 122.

As another example, the planar heating element (P) may be disposed on the upper surface of the seating unit 120 to directly transfer heat to the user, or disposed on the lower surface of the seating unit 120 to indirectly transfer heat to the user. You can.

Additionally, the electric sofa 100 using a planar heating element (P) according to an embodiment of the present invention may further include a protective case when the planar heating element (P) is placed on the bottom of the seating unit 120. there is.

Specifically, the protective housing is seated on the upper surface of the frame 110.

The protective housing may be formed into an approximately rectangular plate shape.

A receiving groove is formed on the upper surface of the protective housing, and the planar heating element (P) is accommodated in the receiving groove.

And, the seating unit 120 is jointly seated on the upper surface of the protective housing and the planar heating element (P).

Due to this, the protective housing supports the seating unit 120 and the user's load, prevents damage to the planar heating element (P), and allows the heat generated from the planar heating element (P) to rise through the mattress and be provided to the user. You can.

In the planar heating element (P) described above, the (+) electrode and the (-) electrode are connected and current flows to generate heat.

To this end, the planar heating element (P) may include a heat-resistant tempered glass plate and a conductive heating film formed on the surface of the tempered glass plate to allow current to flow.

The tempered glass plate allows the conductive heating film to be evenly distributed and laminated, and the conductive heating film generates heat enough to heat the heat medium.

This conductive heating film is formed by conventional deposition or spraying methods.

The conductive heating film layer uses a transparent conductive electrode material with high transparency. The transparent conductive material is either antimony-containing tin oxide (ATO) or indium-containing tin oxide (ITO). ), etc. are used.

Among these, ITO is widely used for reasons such as low resistivity.

Meanwhile, if necessary, fluorine-containing tin oxide (FTO), which has high heat resistance, chemical resistance, and wear resistance, high safety against high temperature and high voltage, resistance, and high transmittance, can be used.

The conductive heating film is a layer that generates heat using electricity and is not limited to the above description. For the formation of such a conductive heating film, conventionally known techniques may be applied.

The planar heating element described above includes a glass disc on which electrodes are formed and a heating layer.

In addition, the planar heating element includes a polishing step of polishing the glass disk (1), a washing and drying step of washing and drying the glass disk (1), a perforation step of perforating the glass disk (1), and a polishing step of polishing the glass disk (1). A printing step of printing the conductive materials (10a, 10b), a heat treatment step of heat treating the glass original plate (1), a cooling step of cooling the heat-treated glass original plate (1), and a glass original plate (1) and the glass original plate (1) ) at least one of the coating steps of coating the CNT (Carbon Nano Tube, hereinafter referred to as 'CNT') heating ink, which is the heating layer 20, on the conductive materials 10a and 10b printed on the It can be manufactured through

First, the polishing step (S100) is a step of polishing a glass original plate (1) cut to a certain size.

Specifically, in the polishing step, each edge and each corner of the glass plate 1 is polished using a polishing device such as a grinder, thereby smoothing the sharp, rough, and pointed sides of the glass plate 1. there is.

At this time, the glass original plate 1 may be formed of tempered glass.

In this way, by grinding each edge and each corner of the glass disk 1, it is possible to prevent the worker's hands from being cut in the process of manufacturing the planar heating element.

Meanwhile, after the polishing step, a washing and drying step (S200) is performed.

The washing and drying step is to remove dust and other foreign substances from the surface of the glass.

The washing and drying step is performed through a washing dryer (30).

As shown in FIG. 2, the washing dryer 30 may include a washing unit 32 and a drying unit 33.

The washing unit 32 and the drying unit 33 are arranged side by side on the upper side of the conveyor 31 that transports the glass plate 1.

The glass disk 1 is transported by the conveyor 31 and sequentially passes through the washing section 32 and the drying section 33.

The washing unit 32 is configured to spray washing water from the upper side of the conveyor 31 toward the glass disk 1.

Additionally, the drying unit 33 is disposed behind the washing unit 32 and is configured to spray warm air toward the glass disk 1 from the upper side of the conveyor 31.

That is, dust and other various foreign substances on the surface of the glass original plate 1 can be removed with the washing water sprayed from the washing unit 32, and the surface of the glass original plate 1 can be removed with warm air sprayed from the drying unit 33. It can dry the moisture on the surface.

In this way, after washing and drying the upper surface of the glass original plate 1 through the washing dryer 30, the glass original plate 1 is flipped 180 degrees and placed on the conveyor 31, and the part that was the bottom of the glass original plate 1 is replaced with the upper surface. This can be done by washing and drying through the washing unit 32 and drying unit 33.

Meanwhile, after the washing and drying step, a drilling step (S300) is performed.

The drilling step is a step of drilling a pair of holes (1a) for passing a pair of wires (3) in the glass disk (1) that has gone through the polishing step.

At this time, a pair of holes 1a is drilled in the line where the conductive materials 10a and 10b are printed in the glass plate 1.

The drawing shows an example in which conductive materials (10a, 10b) are printed on the right and left edges of the glass plate (1). Holes (1a) are also perforated on the right and left edge lines of the glass plate (1), respectively.

As an example, drilling of the glass disk 1 may be performed using an electric drill.

The electric drill can be automatically raised and lowered relative to the glass disc (1) through a lifting device such as a cylinder or cam.

After seating the glass disc (1) on the upper surface of the work table, lowering the electric drill to the glass disc (1) through a lifting device formed by a cylinder or cam, a hole (3) for protruding the wire (3) into the glass disc (1) 1a) can be drilled.

At this time, a total of two wires (3) can be applied as a pair, with + and - poles. In addition, since the conductive materials (10a, 10b), which will be described later, are printed in two lines each on one side and the other side of the glass plate (1), the wires (3) are applied in total of two pairs, and are applied to one side and the other side of the glass plate (1). It is electrically connected to the disposed conductive materials 10a and 10b.

Since the method of connecting the wires 3 to the conductive materials 10a and 10b is a commercialized technology in the field of planar heating elements, detailed description will be omitted.

Meanwhile, after the perforation step, a printing step (S400) is performed.

The printing step is a step of printing conductive materials (10a, 10b) to allow electricity to flow on the glass plate (1).

The conductive materials 10a and 10b are connected to the (+) electrode and the (-) electrode, that is, the wire 3 described above, so that electricity flows, thereby generating heat.

The conductive materials 10a and 10b may be formed of silver paste.

The conductive materials 10a and 10b are in the form of ink and are printed in the form of lines of a certain length on one side and the other side of the glass plate 1, respectively, to form an electric path.

In addition, the conductive materials 10a and 10b allow current to flow on the surface of the glass plate 1 and generate heat sufficient to heat the heating layer 20.

The method of printing the conductive materials 10a and 10b may be at least one of screen printing, offset printing, gravure printing, flexo printing, letterpress printing, inkjet printing, and roll-to-roll gravure printing, but is not limited thereto. does not

At this time, the electric path may mean a line printed with conductive material (10a, 10b), or it may mean a pattern by the line. The heating temperature of the electric passage can be set by adjusting the resistance value, and the resistance value of the heating element can be adjusted according to the heat treatment conditions and the conditions of the conductive materials 10a and 10b.

Additionally, in the electric sofa 100 using a planar heating element according to an embodiment of the present invention, the conductive materials 10a and 10b are not limited to silver paste, but include silver nano ink and carbon paste. ) and carbon nanotubes.

On the other hand, the conductive materials 10a and 10b may be transparent conductive electrode materials with high transparency. As a transparent conductive material, antimony-containing tin oxide (ATO) or indium-containing tin oxide (hereinafter referred to as 'ITO') may be used.

Meanwhile, after the printing step, a drying step (S500) of drying the glass original plate 1 is performed.

The drying step may be performed using equipment that generates warm air or hot air, or may be performed by naturally drying the glass plate 1 in a drying room.

Through this drying step, the conductive materials 10a and 10b can be dried and fixed to the glass plate 1.

And, when the conductive materials 10a and 10b are dried, the conductive materials 10a and 10b create a path for electricity to flow.

Meanwhile, after the drying step, a heat treatment step (S600) is performed to improve the strength of the glass plate 1 while depositing (fixing) the conductive materials 10a and 10b on the glass plate 1.

The heat treatment step may be performed by the heat processor 40.

The heat processor 40 includes a chamber 41 and a heating means 42.

The chamber 41 has an entrance through which the glass plate 1 enters and exits on one side, and a receiving space in which the glass plate 1 is accommodated is formed inside.

The heating means 42 are disposed on both inner walls of the chamber 41 and face each other with the glass disk 1 interposed therebetween. The heating means 42 can be applied to products that can generate heat, such as a heater or a heating wire.

The glass disk 1 can be entered and exited from the chamber 41 while being held by a plurality of tongs 43.

Vertical rods 44 having a certain length are each coupled to the tongs 43.

The upper sides of the vertical bars 44 are jointly fixed to one horizontal frame 45.

Then, the horizontal frame 45 is reciprocated in the horizontal direction by the transfer device 46, and the glass disc 1 held by the tongs 43 is transferred inside or outside the chamber 41.

As an example, the transfer device 46 may include a pair of rotating bodies arranged to be spaced apart from each other and a rotating member that rotates in the forward or reverse direction while forming an endless orbit around the pair of rotating bodies.

The rotating body may be formed of a pulley or sprocket.

The rotating member is formed as a timing belt when the rotating body is formed as a pulley, and as a chain when formed as a sprocket.

One of the pair of rotating bodies is rotated in the forward or reverse direction by the power of the motor.

And, a horizontal frame 45 is coupled to the rotating member.

Therefore, when the motor rotates the rotating body in the forward or reverse direction, the rotating member is rotated corresponding to the rotation direction of the motor. Ultimately, the glass disk 1 can be transported inside or outside the chamber 41 by controlling the rotation direction of the rotating body through the motor.

The glass disk 1 transferred to the inner space of the chamber 41 is heat treated through the heating operation of a heater or a heat wire.

At this time, the heat treatment temperature of the glass plate 1 using a heater or a heat wire in the heat treatment step may be about 700°C to 900°C, but is not limited thereto.

When the glass plate 1 is heat treated in this way, the conductive materials 10a and 10b (silver paste) are deposited on the glass plate 1. In addition, the deposited conductive materials (10a, 10b) serve as an electrical path through which the wire (3) can supply electricity to the glass disk (1) in the soldering process that proceeds later.

In addition, structural stability can be secured by strengthening the glass plate 1 to a certain level through heat treatment.

As a result, the glass disk 1 can be prevented from being damaged by various impacts or strong winds.

At this time, it should be noted that the transfer device 46 in the present invention is not limited to the above-described rotating body and rotating member, and may be replaced with any one selected from a rodless cylinder, a linear cylinder, and a rack pinion.

Meanwhile, after the heat treatment step, a cooling step (S700) is performed.

The cooling step is a step of cooling the heat-treated glass plate 1 to a certain temperature or higher.

The cooling step may be performed by the cooler 50.

The cooler 50 includes a pair of plates opposing each other on the inlet side of the chamber 41 and a flat plate 51 arranged at regular intervals in the vertical and horizontal directions, and cools air toward the glass disk 1. It includes a plurality of spray nozzles 52 capable of spraying and an air compressor (not shown) that supplies compressed air to the spray nozzles 52.

Accordingly, the glass original plate 1 taken out of the chamber 41 after completing the heat treatment step is placed between the flat plates 51, and the spray nozzles 52 are directed toward the glass original plate 1.

A certain area of the spray nozzles 52 is embedded inside the flat plate 51, and the remaining area protrudes from the flat plate 51 and faces the glass disk 1.

Additionally, branch pipes (not shown) connected to each of the spray nozzles 52 are embedded inside the flat plate 51.

The branch pipes are structured so that their interiors are interconnected.

One side of the branch pipe is connected to a supply pipe (not shown) connected to the air compressor.

For this reason, when the glass disk 1 is placed between the flat plates 51 and the air compressor is operated, the cold air generated from the air compressor is evenly sprayed onto the glass disk 1 through the spray nozzles 52. .

Meanwhile, a taping step may be performed after the cooling step.

The taping step is a step of attaching tape along the edge of the glass plate 1 to prevent CNT ink from being applied to the edge of the glass plate 1 in the subsequent coating step.

After applying and drying the CNT ink on the glass plate (1), remove the tape from the glass plate (1), attach the PVB film to the edge of the glass plate (1), and then attach the protective film.

Meanwhile, after the taping step, a coating step (S800) is performed.

The coating step is a step of forming the heating layer 20 by spraying CNT ink on the glass plate 1 and the electrical passages of the conductive materials 10a and 10b printed on the glass plate 1.

CNT is a long honeycomb-shaped carbon structure with a cylinder diameter of several tens of nanometers, and hexagons made of six carbon atoms are connected to each other to form a tube shape. CNT has similar electrical conductivity to copper, has the property of generating heat when electricity is applied, and has excellent electrical and mechanical properties.

In addition, CNTs have smaller carbon particles than conventional carbon-based heating inks, so they can increase the contact surface area with the electrical path formed by the conductive materials 10a and 10b, and thus the heating layer 20 and the glass disk 1 ), the microscopic space formed at the contact portion of the heating layer 20 and the electrical passage is reduced, thereby improving electrical stability.

In addition, in this coating step, CNT ink with carbon particles as small as tens of nanometers is applied to the glass plate (1) to increase the contact surface area, thereby providing the effect of minimizing contact resistance with the wire (3). .

A heating and applicator 60 is used to coat the CNT ink described above on the glass plate 1.

That is, the coating step is performed by automatically heating the glass plate 1 through the heating and applicator 60 and then automatically applying CNT ink to the glass plate 1 and the electric passage.

As shown in FIG. 4, the heating and applicator 60 includes a heating unit 61, a reciprocating drive unit 62, a trolley 63, and a spray unit 64.

The heating unit 61 may be formed in a flat plate shape.

Support legs 612 are coupled to both sides of the bottom of the heating unit 61.

Accordingly, the heating unit 61 supports the glass disk 1 at a predetermined distance from the ground.

At least one glass disk 1 is mounted on the upper surface of the heating unit 61.

A heating source 611 that generates heat to evaporate moisture contained in the CNT ink is embedded in the heating unit 61.

The heating source 611 can be applied to products that generate heat by receiving power, such as a heating wire or heating coil.

The heating source 611 may be embedded in a sine wave pattern, a sawtooth wave pattern, etc. to evenly heat the entire heating unit 61.

The heating unit 61 may be formed of a material such as metal with excellent thermal conductivity to evenly transfer the heat generated by the heating source 611 to the glass plate 1.

The reciprocating drive unit 62 is composed of a pair and is disposed on one side and the other side of the heating unit 61, respectively.

The reciprocating drive unit 62 may be formed of any one of a pneumatic cylinder such as a rodless cylinder or a liner cylinder, or a rack and pinion to move the trolley 63 and the spray unit 64 along the glass disk 1, The drawing shows an example formed of a pneumatic cylinder.

The trolley 63 may be formed to have a roughly 'ㄷ' cross-sectional shape.

Both sides of the bottom of the trolley 63 are coupled to the pistons of the reciprocating drive unit 62, respectively.

Accordingly, the trolley 63 and the spray unit 64 mounted on the trolley 63 are moved along the upper surface of the glass disk 1 by the reciprocating drive unit 62.

The spray unit 64 is mounted on a trolley 63 and sprays CNT ink while moving along the upper surface of the glass plate 1.

A reservoir (not shown) storing CNT ink to be supplied to the spray unit 64 may be installed in the trolley 63.

At this time, the spray unit 64 is applied as a type of product that sprays compressed air, and can spray CNT ink evenly on the glass plate 1, ultimately forming a heating layer of uniform thickness on the glass plate 1. (20) can be formed.

As described above, since one or two or more glass disks 1 can be seated on the heating unit 61, the spray units 64 can also be applied in numbers corresponding to the glass disks 1.

By applying a plurality of spray units 64, it is possible to form the heating layer 20 by spraying CNT ink on several glass plates 1 at once.

Furthermore, the spray unit 64 can be implemented to adjust its position to correspond to the gap between the glass disks 1.

To this end, the rail unit 65 is installed horizontally on the trolley 63, and a slider 66 that slides in the left and right directions along the rail unit 65 is installed on the spray unit 64, thereby forming the spray unit 64. ) and the glass disk (1) can be opposed 1:1 in the vertical direction.

In the coating step described above, the glass plate 1 is preheated by the heating unit 61, and then the CNT ink is automatically and evenly applied through the spray unit 64, so that the moisture contained in the CNT ink can be immediately evaporated. there is. Therefore, only CNT ink can be quickly and stably deposited and fixed on the glass plate 1.

Because of this, the process of drying the CNT ink applied to the glass plate 1 can be omitted, thereby shortening the time required to manufacture the planar heating element.

Furthermore, it is possible to prevent the CNT ink from spreading during the process of removing the glass plate 1 that has undergone the coating step in the heating unit 61.

Additionally, the heating temperature of the glass original plate 1 by the heating source 611 in the coating step may be about 100°C to 150°C, but in the present invention, the heating temperature of the glass original plate 1 is within the above-mentioned temperature range. It is stated that it is not limited.

The heating temperature of the glass plate 1 can be selectively changed depending on the size of the glass plate 1, the physical properties of the CNT ink, the amount of CNT ink, and various other conditions.

Meanwhile, after printing CNT ink on the glass plate 1, the wires 3 are connected to the electric passages formed by the conductive materials 10a and 10b on the glass plate 1, respectively.

At this time, the electric passage may be formed only on the front surface of the glass disk 1. In addition, the wire 3 may pass through the hole 1a formed in the glass plate 1 by the above-described drilling step from the rear direction of the glass plate 1 and be fixed to the electric passage by soldering.

Since the method of connecting the wire (3) to the electric passage is a commercialized technology in the field of planar heating element technology, detailed description will be omitted.

Meanwhile, after connecting the electric wire 3 to the electric path of the glass original plate 1, an attachment step (S900) of attaching the protective glass 2 to the front of the glass original plate 1 is performed.

The protective glass (2) can be attached to the glass plate (1) through a PVB (Polyvinyl Butyral) bonding film.

As described above, the PVB (Polyvinyl Butyral) bonding film may be attached to the edge area of the glass original plate 1.

As another example, the PVB (Polyvinyl Butyral) bonding film may be attached not only to the edge area of the glass plate 1 but also to the inner area of the edge.

At this time, the attachment of the glass plate 1 and the protective glass 2 can be accomplished through a vacuum press.

As an example, a PVB (Polyvinyl Butyral) bonding film is attached to the glass plate 1, and then the protective glass 2 is placed on it, and then the glass plate 1 and the protective glass 2 are separated by about 2 times through a vacuum press. By pressing for ~3 hours, the protective glass (2) can be attached to the glass plate (1).

The conventional planar heating element used a wire (3) soldered to the end of the electric passage of the glass plate (1) without a protective glass (2), but in this case, the wire (3) was exposed, causing a problem of being easily broken.

However, the electric sofa using a planar heating element according to the present invention attaches the protective glass (2) to the glass disk (1) to completely cover and protect the electric passage, wire (3), and heating layer (20), thereby protecting the wire ( 3) can be prevented from being broken, and the electric passage or the heating layer 20 can be prevented from being damaged.

Additionally, the protective glass 2 may be made of the same material as the glass plate 1.

Also, at least one of a polishing step, a washing drying step, and a heat treatment step may be performed on the protective glass 2.

Next, the microstructure of CNTs applied to the glass disk 1 will be described.

The following figures show electron microscope image analysis of a sample coated with CNTs on the surface of a glass plate (1).

The analysis equipment used was Hitachi, S-4200, Japan, and the acceleration voltage was 15KV.

In addition, there are five types of CNT for each resistance (200 ohm, 400 ohm, 600 ohm, 800 ohm, 1k ohm) applied to the surface of the glass plate (1).

The analysis method is image analysis by magnification (0.5K~50.0K) for the same resistance specimen: 200Ω (0.5~30.0K), 400Ω (0.5~50.0K), 600Ω (0.5~50.0K), 600Ω 50.0K, and binder estimation. Image, 800Ω (1.0~50.0K), 1.000Ω (0.5~30.0K).

In addition, images according to resistance changes were cross-analyzed, and the types included image analysis by resistance compared to the same magnification (1.0K), image analysis by resistance compared to the same magnification (10.0K), and image analysis by resistance compared to the same magnification (30.0K). ), Binder exposure image analysis (10.K) among 600 ohm and 1000 ohm specimens.

The analysis results are as follows.

go. Image analysis by magnification for the same resistance specimen (0.5K~50.0K)

A. 200Ω(0.5~30.0K)

Referring to Figures 1 to 4, at low magnification, the image of the CNT was not observed, and many non-conductive particle materials of about 10um in size were observed distributed on the CNT coating surface.

The thickness of CNTs was observed to range from 10 nm to 50 nm and their lengths varied.

It was observed that the non-conductive materials (10a, 10b), which appear to be binders, were not evenly distributed and clumped together.

Because a sufficient amount of CNTs are evenly distributed, no image is observed on the glass surface.

B. 400Ω (0.5~50.0K)

Referring to Figures 5 to 9, at low magnifications, the image of the CNT was not observed, and many non-conductive particle materials of about 10 um in size were observed distributed on the CNT coating surface.

In addition, the thickness of CNTs was observed to range from 10 nm to 50 nm and their lengths varied.

Additionally, it was observed that materials that appeared to be binders were not evenly distributed and were clumped together.

Additionally, the image of the glass surface was not observed accurately, and it was observed that the binder and CNT were evenly distributed.

C. 600Ω (0.5~50.0K)

Referring to Figures 10 to 14, at low magnification, many non-conductive particle materials of around 10um in size were observed distributed on the CNT coating surface.

In addition, the thickness of CNTs was observed to range from 10 nm to 50 nm and their lengths varied.

Additionally, it was observed that materials that appeared to be binders were not evenly distributed and were clumped together.

In addition, many images presumed to be images of the surface of the glass disk 1 were observed at low magnification.

Additionally, it was observed that the binder and CNTs were evenly distributed.

Also, at some high magnifications, images were observed in which CNTs were not applied and the binder was assumed to be exposed.

C-1 600Ω 50.0K, binder estimation image

Referring to Figures 15 to 17, CNTs were not applied in several areas and areas presumed to be binders were observed.

Additionally, it was observed that the exposed binder image, which was not observed between 200 and 400 ohms, was evenly visible in various areas starting from 600 ohms.

At this time, the size of the exposed binder area was observed to be around 10um.

D. 800Ω (1.0~50.0K)

Referring to Figures 18 to 21, at low magnification, many non-conductive particle materials of about 10 um in size were observed distributed on the CNT coating surface.

In addition, the thickness of CNTs was observed to range from 10 nm to 50 nm and their lengths varied.

Additionally, it was observed that materials that appeared to be binders were not evenly distributed and were clumped together.

And, an image presumed to be an image of the glass surface was observed widely at low magnification.

Additionally, it was observed that the binder and CNTs were evenly distributed.

Additionally, unlike the 600 ohm high magnification, no image presumed to have exposed binder was observed.

E. 1,0KΩ (0.5~50.0K)

Referring to Figures 22 to 26, at low magnification, a large number of irregular non-conductive particle materials of around 10um in size and amorphous non-conductive materials (10a, 10b) (dust) of 20um to 100um in size were observed distributed on the CNT coating surface. .

In addition, the thickness of CNTs was observed to range from 10 nm to 50 nm and their lengths varied.

Additionally, it was observed that materials that appeared to be binders were not evenly distributed and were clumped together.

And, the image presumed to be that of the glass disk 1 was observed very widely at low magnification.

In addition, an image was observed in which the binder and CNT were evenly distributed, but a material suspected to be a binder was partially agglomerated.

In addition, the estimated binder image observed at 600 ohm high magnification was observed to be larger and wider.

me. Image cross-analysis according to resistance change

A. Image analysis by resistance compared to the same magnification (1.0K)

Referring to Figure 27, as the resistance increased, more images presumed to be a glass surface or binder (red circle area) were observed. This phenomenon was observed larger and more intensely as the resistance increased.

Additionally, an image (yellow circle area) presumed to be an atypical impurity was observed at 1.0K ohm.

B. Image analysis by resistance compared to the same magnification (10.0K)

Referring to Figure 28, areas presumed to be binders were observed in all specimens, and various sizes and shapes were observed.

And, no differences were observed as magnification increased.

In addition, it was observed that CNTs were evenly applied regardless of magnification and type of specimen, only in areas where the binder was not exposed.

C. Image analysis by resistance compared to the same magnification (30.0K)

Referring to Figure 29, areas presumed to be binders (arrows) were observed in all specimens, and various sizes and shapes were observed.

Additionally, no differences in CNT application density were observed depending on the specimen.

In addition, it was observed that CNTs were evenly applied regardless of magnification and type of specimen, only in areas where the binder was not exposed.

D. Binder exposure image analysis (10.0K)

Referring to Figure 30, the binder exposed images were observed for the 600 and 1000 ohm specimens.

And, as the resistance went up, this area was observed more widely.

In conclusion, a large number of amorphous, low-conductivity impurities were applied in all areas, and as the resistance increased above 400 ohms, images suspected of exposing the binder were observed in many areas, and as the resistance increased, the conductivity suspected to be the binder increased. This low area was observed to be widely distributed, and at 1.0K ohm, an image suspected to be glass fragments was observed. 5. The thickness of the CNT was observed to be 10 to 50 nm and the length was observed to vary.

Next, the microstructure of the electrode and CNT coated on the glass disk 1 will be described.

The following figures show electron microscope image analysis of a sample coated with CNTs on the surface of a glass plate (1).

The analysis equipment used was Hitachi, S-4200, Japan, and the acceleration voltage was 10KV.

The specimens are two types of specimens with different thicknesses of electrodes (conductive materials (10a, 10b)) on the surface of the glass disk (1) and one specimen coated with CNT on the surface.

Then, a specimen was prepared by breaking the electrode and CNT coated specimen applied to the surface of the glass disk (1).

In addition, the surface analysis of the electrode and CNT-coated specimen was analyzed, and the cross-section of the specimen was analyzed to measure the thickness of the electrode and CNT coating. The standard for analysis direction is the coating layer upward, and the electrode hole of the electrode is downward (6 o'clock direction). It is based on the state toward .

The analysis method analyzed images according to the magnification of each part (0.5K~50.0K), specifically, CNT coated specimens (0.5~20.0K), thick electrode specimens (0.5~20.0K), and thin electrode specimens (0.5K~50.0K). ~20.0K) was analyzed.

Comparative analysis of the specimens included surface analysis for each section observed at the same magnification, and side analysis (thickness analysis) observed at the same magnification.

The names of each part used in the analysis are shown in the figure.

Figure shows the analysis position of the CNT-coated specimen.

go. Image analysis according to magnification for each part (0.5K~50.0K)

A. Surface and cross-sectional analysis of CNT coated specimen (A specimen) (0.5K~20.0K)

(Figure 31 Black electrode (cathode) - Analysis of electrode surface with CNT coating layer removed (left) 100 times, (right) 5,000 times)

Referring to Figure 31, it was observed that many pores ranging in size from hundreds of nm to several μm were present.

And, referring to (right) in Figure 31, numerous micropores (about 10nm) were observed on the surface.

(Figure 32 Black electrode (cathode) - cross-sectional analysis of the electrode with the CNT coating layer removed (5000 times))

Referring to Figure 32, it was observed that an electrode with a thickness of approximately 6㎛ was coated on the glass surface.

In addition, it was porous and had various sizes ranging from tens of nm to several μm.

(Figure 33 CNT coating surface analysis video)

Referring to Figure 33, the left image is an image of a location without electrodes, where CNTs were observed.

And, on the right, the CNT coating layer on the electrode was not observed.

(Figure 34 Cross-sectional analysis video according to CNT coating location)

Referring to Figure 34, a coated CNT layer of approximately 880 nm was observed on the plate (left).

And, (right) an electrode measuring approximately 6㎛ was observed on the plate.

Additionally, (right) a layer of approximately 900 nm was observed on the electrode layer.

And, (right) it was observed that the shape of the CNT almost disappeared on the surface.

Additionally, (right) a layer presumed to be carbon was observed, and interlayer separation was observed.

(Figure 35 Red electrode (anode) - Analysis of electrode surface with CNT coating layer removed (left) 100 times, (right) 5,000 times)

Referring to Figure 35, the same surface image as the cathode was observed.

In addition, it was observed that a large number of pores ranging in size from hundreds of nm to several μm were present.

Additionally, numerous micropores (around 10 nm) were observed on the surface. (Refer to the right image in Figure 35)

(Figure 36 Red electrode (anode) - cross-sectional analysis of electrode with CNT coating layer removed (5000 times))

Referring to Figure 36, it was observed that an electrode with a thickness of approximately 6㎛ was coated on the glass surface.

In addition, it was observed that it was porous and had various sizes ranging from tens of nm to several μm.

Additionally, it was observed that the coating layer was created with a relatively uniform thickness.

(Figure 37 CNT surface analysis video by location)

Referring to Figure 37, the left image is an image of a location without an electrode adjacent to the anode, where CNTs were observed.

And, on the right is the CNT coating layer on the anode, and like the cathode, no CNTs were observed.

(Figure 38 Cross-sectional analysis video by location)

Referring to Figure 38, a coated CNT layer of approximately 900 nm was observed on the plate (left).

And, (right) an electrode measuring approximately 6㎛ was observed on the plate.

Additionally, (right) a CNT layer of approximately 900 nm was observed on the electrode layer.

And, (right) the shape of the CNT on the surface was observed, unlike that of the cathode.

Additionally, separation between the anode and CNT layers was observed.

(Figure 39 Analysis video of the electrode surface on the glass disk (1))

Referring to Figure 39, the properties of the conductive material forming the electrode were observed to be the same.

Additionally, it was observed that the size of the micropores created on the surface were smaller and more distributed than those of the cathode.

Additionally, in the case of the anode, it was observed that large micropores were less distributed than the cathode.

(Figure 40 Video of electrode cross-section analysis on glass disk (1))

Referring to Figure 40, as a result of cross-sectional analysis, it was observed that the electrode thickness and shape of the two poles were similar.

B. Surface and cross-sectional analysis of thick electrode specimen (B specimen) coating (0.5~20.0K)

(Figure 41 Analysis image of left electrode surface of specimen B)

Referring to Figure 41, the micropores observed on the electrode surface of specimen A were not observed.

In addition, the voids and shape between particles forming the electrode were observed to be the same as the electrode of specimen A.

Additionally, many partial voids were observed. However, surface micropores were not observed.

(Figure 42 Cross-sectional image of the left electrode of the specimen)

Referring to Figure 42, an electrode coating layer of approximately 6㎛ was observed.

And, a number of pores were observed inside.

Additionally, no micropores were observed on the sample surface.

And, it was observed that the coating layer was formed relatively evenly.

(Figure 43 Analysis image of left electrode surface of specimen B)

Referring to Figure 43, the micropores observed on the electrode surface of specimen A were not observed.

In addition, the voids and shape between particles forming the electrode were observed to be the same as the electrode of specimen A.

Additionally, many partial voids were observed. However, surface micropores were not observed.

(Figure 44 Cross-sectional image of right electrode of specimen B)

Referring to Figure 44, an electrode coating layer of approximately 6㎛ was observed.

And, a number of pores were observed inside.

Additionally, no micropores were observed on the sample surface.

Additionally, it was observed that the coating layer was formed relatively evenly.

C. Surface and cross-sectional analysis of coating of thin electrode specimen (C specimen) (0.5~20.0K)

(Figure 45 Analysis image of left electrode surface of specimen C)

Referring to Figure 45, the micropores observed on the electrode surface of specimen A were not observed.

In addition, the voids and shape between particles forming the electrode were observed to be the same as the electrode of specimen A.

Additionally, many partial voids were observed, but no micropores on the surface were observed.

(Figure 46 Cross-sectional image of left electrode of specimen C)

Referring to Figure 46, an electrode coating layer of approximately 6㎛ was observed.

And, a number of pores were observed inside.

Additionally, no micropores were observed on the sample surface.

And, it was observed that the coating layer was formed relatively evenly.

(Figure 47 Analysis image of the right electrode surface of specimen C)

Referring to Figure 47, the micropores observed on the electrode surface of specimen A were not observed.

In addition, the voids and shape between particles forming the electrode were observed to be the same as the electrode of specimen A.

Additionally, many partial voids were observed, but no micropores on the surface were observed.

(Figure 48 Cross-sectional image of right electrode of specimen C)

Referring to Figure 48, an electrode coating layer of approximately 6㎛ was observed.

And, a number of pores were observed inside.

Additionally, no micropores were observed on the sample surface.

And, it was observed that the coating layer was formed relatively evenly.

me. Comparative analysis of specimens

A. Surface analysis of each part observed at the same magnification

(Figure 49 Sample surface analysis comparison video)

Referring to Figure 49, a large amount of micropores were observed on the surface of specimen A, but not in specimens B and C.

And, regardless of the type of specimen, no difference was observed between left and right specimens.

B. Side analysis observed at the same magnification (thickness analysis)

Figure 50 Comparison video of specimen cross-sectional analysis

Referring to Figure 50, a large amount of micropores were observed on the surface of specimen A, but not in specimens B and C.

And, regardless of the type of specimen, no difference was observed between left and right specimens.

In conclusion, summarizing the analysis results of specimen A, numerous pores were observed in the electrode from which the CNT coating layer was removed.

In addition, the electrode thickness was manufactured to be about 6 to 7 um thick, and it was observed that many large pores were present.

Additionally, the CNT coating layer was observed to have a thickness of 900 nm to 1 μm.

And, when the CNT coating layer was coated on the surface of the glass plate (1), CNTs were observed. However, when coated on the electrode, CNTs were not observed in the case of the cathode, and in the case of the anode, the CNT shape was observed although the amount was somewhat reduced.

Additionally, more numerous and smaller micropores were observed in the cathode.

Meanwhile, summarizing the analysis results of specimens B and C, no pores were observed on the electrode surface.

In addition, the electrode thickness was manufactured to be about 6 to 7 um thick, and it was observed that many large pores were present.

Additionally, no difference in surface microstructure between the left and right electrodes was observed, and the electrode thickness was also observed to be similar.

Meanwhile, if we summarize the comparative research analysis results for each specimen, It was observed that multiple pores were present.

And, the particle size was observed to be similar for all three specimens.

In addition, the cross-sectional thickness was similar, and it was observed that many large pores existed inside.

A person skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the scope of the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. must be interpreted.

1: glass plate 1a: hole
2: protective glass 3: electric wire
10: conductive material 20: heating layer
30: Washing dryer 31: Conveyor
32: washing section 33: drying section
40: heat treater 41: chamber
42: heating means 43: tongs
44: Vertical bar 45: Horizontal frame
46: transfer device 50: cooler
51: Flat plate 52: Spray nozzle
60: heating and applicator 61: heating unit
611: heating source 612: support leg
62: Reciprocating drive unit 63: Trolley
64: spray part 65: rail part
100: Electric sofa using planar heating element 110: Frame
111: backrest 120: seating area
121: outer shell 122: cushion layer

Claims (3)

frame;
a seating portion disposed on the upper surface of the frame and on which the user sits; and
It includes a planar heating element embedded in the seating area to maintain heat retention,
The planar heating element is,
A glass disk on which electrodes are formed; and
It includes a heating layer coated with CNT ink on the glass plate and generating heat by electric current,
The heating layer is,
At least a heating unit on which the glass disc is seated, a reciprocating drive unit disposed on one side and the other side of the heating unit, a trolley that reciprocates on the upper part of the glass disc seated on the heating unit by the reciprocating drive unit, and the trolley. It is mounted on one or more plates and is formed by a heating and applicator including a spray unit for spraying CNT ink on the glass plate. The CNT ink is sprayed while the glass plate is heated or simultaneously with heating, and the inherent moisture is evaporated. An electric sofa using a planar heating element formed from the heating layer.
delete According to paragraph 1,
An electric sofa using a planar heating element, which is attached to the glass plate through a PVB film and further includes a protective glass on which at least one of a picture, text, or logo is printed.

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