KR20080046151A - Plane type heating apparatus - Google Patents

Abstract

A surface heating device is provided to maintain a contact state between an electrode layer and a connection terminal stably by inserting the connection terminal between an insulation substrate and an installation unit and heating the insulation substrate to a high temperature. A surface heating device includes an insulation substrate(10), a resistance heating layer(20), an electrode layer(30), an installation unit(40), and a conducting connection terminal(50). The resistance heating layer is formed on the insulation substrate, and generates a heat if a current is applied. The electrode layer is formed to be extended along an edge of the insulation substrate, and is coupled to the resistance heating layer. The installation unit of a non-conductor material has an installation groove into which the edge of the insulation substrate is inserted. The conducting connection terminal is contacted with the electrode layer and is arranged between the installation groove and the insulation substrate to apply a current.

Description

Planar heating apparatus {Plane type heating apparatus}

The present invention relates to a planar heating apparatus, and more particularly, to a planar heating apparatus in which a connection with an electrical terminal is stably maintained and heat is generated uniformly over the entire area.

Conventional electric heaters are used with a heating coil that generates heat when electricity is applied. However, a heating apparatus using a heating coil has a problem that the thermal efficiency is very low.

Various resistance heating elements are used as a means of replacing a heating coil. In particular, a resistance heating element such as a positive temperature coefficient thermistor (PTC) having a positive resistance temperature coefficient (PTC) is frequently used. PTC has the advantage that it can be used semi-permanently because of high thermal efficiency, low risk of fire and long life.

In recent years, a resistive heating element such as PTC is widely used in a plane type heating apparatus in which a heat generating portion forms a surface. According to the conventional planar heating apparatus, an electric terminal is connected to a resistance heating element formed on the surface of an insulating substrate, and heat is generated when a current is supplied to the resistance heating element through the electrical terminal. However, in the related art, since an electrical terminal is connected to any one point of the resistance heating element by soldering, when the resistance heating element is heated for 400 degrees or more, the solder melts and the connection between the resistance heating element and the electrical terminal occurs.

In addition, since the thermal expansion coefficients of the lead and the insulated substrate used for soldering are different, the temperature rises or falls during the heat generation of the resistive heating element, and there is a problem in that the connection between the resistive heating element and the electrical terminal is poor due to the cracks generated in the solder portion. .

In addition, since the electrical connection between the resistance heating element and the electrical terminal is made through only one point, there is a problem that heat is not generated evenly because a uniform resistance is not formed over the entire area of the resistance heating element.

In addition, in order to connect the resistance heating element and the electrical terminal, the soldering work must be performed, and thus, the assembly of the heating device is inconvenient and the maintenance is difficult.

It is an object of the present invention to provide a planar heating device in which heat is generated uniformly over the entire area.

Another object of the present invention is to provide a surface heating apparatus that can be stably maintained a connection with an electrical terminal even when heated to a high temperature.

Still another object of the present invention is to provide a surface heating apparatus that is simple to assemble and easy to maintain by connecting electrical terminals.

The present invention provides a planar heating apparatus in which a connection terminal is disposed between an insulating substrate and a mounting portion coupled to an edge of the insulating substrate.

The planar heating device according to the present invention includes an insulating substrate, a resistive heating layer formed on the insulating substrate and generating heat when a current is applied, an electrode layer extending along the edge of the insulating substrate and connected to the resistive heating layer, and And a mounting portion of a non-conducting material having a mounting groove into which an edge of the substrate is inserted, and an electrically conductive connecting terminal disposed between the mounting groove and the insulating substrate so as to contact the electrode layer and apply a current.

In the present invention, a plurality of insulating substrates may be disposed to face each other, and each of the connection terminals coupled to each of the insulating substrates may be electrically connected to each other.

In the present invention, a plurality of insulating substrates may be arranged in series so that side surfaces of each other face each other.

In the present invention, the planar heating device may further include a blowing device for blowing toward the insulating substrate.

In the present invention, the planar heating device may further include a casing surrounding the insulating substrate and the blower.

In the present invention, the casing may include an intake port through which external air is introduced, and an exhaust port through which the air inside is discharged to the outside.

In the present invention, the inlet port can be disposed above the insulated substrate, and the blower device can be arranged between the inlet port and the insulated substrate.

In the present invention, it may further include an air purification filter disposed in the inlet port to filter foreign matter from the air.

In the present invention, the exhaust port may be disposed below the insulating substrate.

In the present invention, the size of the intake port may be larger than the size of the exhaust port.

In the present invention, the casing may include a heat reflecting plate that reflects heat generated by the insulating substrate on the inner side facing the insulating substrate.

In the present invention, the casing may be provided with a decorative material on the outer surface.

In the planar heating apparatus of the present invention as described above, since a connection terminal is disposed between the mounting portion supporting the edge of the insulated substrate and the insulated substrate, the planar heating device contacts the electrode layer of the insulated substrate and applies current, thereby covering the entire area of the resistance heating element. There is an effect that heat is generated uniformly.

In addition, since the connection terminal is firmly inserted between the insulating substrate and the mounting portion, the insulating substrate can be heated to a high temperature so that the contact state between the electrode layer and the connection terminal can be stably maintained.

In addition, the connection between the electrode layer of the insulating substrate and the connection terminal is made by a simple method of arranging the connection terminal in the mounting portion and inserting the edge of the insulating substrate into the mounting portion, which is advantageous in assembling and maintaining the planar heating device.

In addition, it is possible to improve the heating efficiency by providing a blower that blows toward the insulating substrate, a casing surrounding the insulating substrate and the blower, and forced circulation of the heated air.

In addition, by installing a decorative material on the outer surface of the casing, the surface heating device can perform the function of interior decoration in addition to the heating function.

Hereinafter, the configuration and operation of the planar heating apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a planar heating apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view showing an assembled state of the planar heating apparatus according to the embodiment shown in FIG. 1, and FIG. 3 is an embodiment shown in FIG. 1. It is an exploded perspective view which shows the attaching part and connection terminal of the planar heating apparatus which concerns on an example.

The planar heating apparatus according to the embodiment shown in FIG. 1 includes an insulating substrate 10, a resistive heating layer 20 and an electrode layer 30 formed on the insulating substrate 10, and edges of the insulating substrate 10. The mounting part 40 couple | bonds and the connection terminal 50 which applies an electric current to the electrode layer 30 are provided.

The insulating substrate 10 is made of a material having heat resistance and electrical insulation such as quartz glass or ceramic.

The resistance heating layer 20 is formed on the surface of the insulating substrate 10. The resistance heating layer 20 is a part that generates heat by internal resistance when power is applied. By applying a conductive paint such as carbon black or a conductive polymer material having a positive temperature coefficient (PTC) characteristic to the surface of the insulating substrate 10, the resistive heating layer 20 functioning as a resistive heating element can be formed. have.

The resistive heating layer 20 is made of nickel chloride (NiCl 2), glycerin (C 3 H 5 (OH) 3), tin dichloride (SnCl 4), strontium chloride (SbCl 3), bismuth chloride (BiCl 3), ethanol (C 2 H 5 OH), and indium 200 ° C. to 700 comprising a composite material comprising at least one material selected from the group consisting of chloride (InCl 3), manganese chloride (MnCl 2), boric acid (H 3 BO 3), ferric chloride (FeCl 3), and nano powder tin (Sn) It may be formed by a method of vapor deposition at room temperature of ℃.

The resistive heating layer 20 can be operated even at low power and has high energy efficiency. In addition, the heating temperature may be controlled by controlling the flow of the current applied to the resistance heating layer 20.

In the insulating substrate 10, an electrode layer 30 extending along the edge of the insulating substrate 10 and connected to the resistance heating layer 20 is formed. The electrode layer 30 is a portion connected to the external connection terminal 50 in order to apply power supplied from the outside to the resistance heating layer 20. 1 and 2, the electrode layer 30 is connected to the top and bottom of the resistance heating layer 20, respectively.

The electrode layer 30 may be formed as a thin film by nano-coating a conductive material such as silver (Ag) on the insulating substrate 10. Since the electrode layer 30 should be electrically connected to the resistance heating layer 20, the electrode layer 30 may be formed to cover the edges of the upper and lower ends of the resistance heating layer 20. However, the present invention is not limited to such an arrangement direction or structure of the electrode layer 30. That is, the electrode layer 30 may be formed so as to cover the left and right edges of the resistance heating layer 20 by deforming from those shown in FIGS. 1 and 2. Alternatively, the electrode layer 30 is formed to form a predetermined pattern on the insulating substrate 10 so that the current can be evenly supplied to the entire area of the resistance heating layer 20, and the resistance heating layer 20 is formed on the electrode layer 30. Can be formed.

The insulating substrate 10 is supported by the mounting portion 40. The mounting part 40 is made of a non-conductive material having heat resistance, and has a mounting groove 43 having a size corresponding to the thickness of the insulating substrate 10. Therefore, the edge of the insulating substrate 10 on which the electrode layer 30 is formed is inserted into the mounting groove 43 of the mounting portion 40, whereby the insulating substrate 10 is stably supported by the mounting portion 40.

In the embodiment shown in FIGS. 1 and 2, the mounting portion 40 is installed at each of the four corners of the insulating substrate 10. The mounting portions 40 are fastened to the fixing plate 41 by bolts 42, so that the insulating substrate 10 and the mounting portion 40 may be fixed to a casing (not shown) surrounding them.

However, the present invention is not limited by the configuration of the mounting portion 40 and the fixing plate 41, and the like, and may be modified in various other forms. That is, two mounting parts may be used, which are manufactured by deforming the mounting part so as to extend along the edge of the insulating substrate and being respectively coupled to the upper edge and the lower edge of the insulating substrate. In addition, instead of using a separate fixing plate 41, a method of fixing the mounting portion directly to the casing (not shown) may be used.

The connection terminal 50 is disposed between the mounting portion 40 and the insulating substrate 10. The connection terminal 50 is made of a material having electrical conductivity such as copper, and has a size corresponding to the width of the electrode layer 30. The connection terminal 50 is connected to the wiring 51 for supplying power applied from the outside, and is in contact with the electrode layer 30 of the insulating substrate 10 and between the mounting groove 43 and the electrode layer 30 to supply power. Is placed on.

Since the size of the mounting groove 43 of the mounting portion 40 corresponds to the thickness of the insulating substrate 10 including the electrode layer 30 and the thickness of the connection terminal 50, the mounting groove 43 is connected to the mounting portion 40 with the insulating substrate 10. The terminal 50 is firmly fastened by an interference fit method. In this state, a current flows through an area where the connection terminal 50 and the electrode layer 30 contact each other. Therefore, when power is applied through the connection terminal 50, the current may be supplied evenly over the entire area of the resistance heating layer 20 through the electrode layer 30.

In addition, even when the insulating substrate 10 is heated to a high temperature, the contact between the connection terminal 50 and the electrode layer 30 can be stably maintained due to the compressive force acting between the mounting portions 40 and the contact surfaces of the insulating substrate 10. Can be.

The assembly of the planar heating device is a simple method of arranging the connecting terminal 50 between the insulating substrate 10 and the mounting portion 40 and then inserting the insulating substrate 10 into the mounting groove 43 of the mounting portion 40. Is made by. According to such a configuration, there is an advantage in that the disassembly and assembly of the mounting portion 40 and the insulating substrate 10 is easy even when performing maintenance.

4 is a perspective view of a planar heating apparatus according to another embodiment of the present invention, and the planar heating apparatus according to the embodiment shown in FIG. 4 includes a plurality of insulating substrates 110. The insulating substrates 110 are disposed such that the surfaces extending thereof face each other.

As shown in FIGS. 1 and 2, each of the insulating substrates 110 has a resistance heating layer 120 and an electrode layer 130 formed thereon, and the insulating substrates 110 are provided with a mounting groove of the mounting unit 140. 143).

In FIG. 4, the mounting unit 140 includes a plurality of mounting grooves 143 to mount the plurality of insulating substrates 110. However, the present invention is not limited to such a configuration, and a plurality of mounting parts may be manufactured to correspond to the respective insulating substrates 110, and the mounting parts may be connected by a fixing plate (not shown).

Electrically conductive connection terminals 150 are disposed between the insulating substrates 110 and the mounting grooves 143. The connection terminals 150 are in electrical contact with the electrode layers 130 formed on the surfaces of the insulating substrates 110, thereby transferring a current applied from the outside to the resistance heating layer 120 through the electrode layers. do.

Each of the connection terminals 150 connected to the insulating substrates 110 may be connected to each other by wiring. As a result, power may be simultaneously applied to the entirety of the insulating substrates 110. However, the present invention is not limited thereto, and each of the insulation substrates 110 may be independently controlled by wirings connected to each of the connection terminals 150 independently.

5 is a cross-sectional view of a planar heating apparatus according to still another embodiment of the present invention.

The planar heating device according to the embodiment shown in FIG. 5 includes the insulating substrate 10, the resistive heating layer 20 formed on the insulating substrate 10, and the same as the planar heating device according to the embodiment shown in FIG. 1. An electrode layer 30, a mounting portion 40 into which an edge of the insulating substrate 10 is inserted, and a connection terminal 50 disposed between the mounting portion 40 and the insulating substrate 10; It further includes the blower 60 which blows toward (10), and the casing 70 which surrounds the insulating board 10 and the blower 60. As shown in FIG.

The casing 70 is formed with an inlet port 71 through which air outside the planar heating apparatus flows in, and an exhaust port 72 through which air inside the planar heating apparatus is discharged to the outside.

In addition, the casing 70 may be provided with a circuit board 80 serving as a control unit for controlling the application of the current to the connection terminal 50. The circuit board 80 may also control driving of the blower device 60.

When the blower device 60 is operated, external air flows into the casing 70 through the inlet port 71, and an air flow 81 is generated through the insulating substrate 10 inside the casing 70. As a result, the air heated by the heat of the insulating substrate 10 may be discharged to the outside of the casing 70 through the exhaust port 72.

In order to improve the heat generation efficiency, the size D of the intake port 71 of the casing 70 may be smaller than the size d of the exhaust port 72. If the exhaust port 72 is smaller than the inlet port 71, a part of the flow of the air flow is diverted around the exhaust port 72 of the casing 70 to generate a backflow flow 82 toward the blower device 60. The backflow flow 82 changes to a flow toward the insulating substrate 10 again near the blower 60. Since the backflow flow 82 is air that was partially heated by the insulating substrate 10, the heat of the insulating substrate 10 can be efficiently reused by being reheated by the insulating substrate 10.

6 is a perspective perspective view of a planar heating apparatus according to still another embodiment of the present invention.

The planar heating apparatus according to the embodiment shown in FIG. 6 includes a plurality of insulating substrates 210, a resistive heating layer 220 and an electrode layer 230 formed on the insulating substrate 210, and an insulating substrate 210. An air blower 260 having a mounting portion 240 into which an edge is inserted, and a connection terminal 250 disposed between the mounting portion 240 and the insulating substrate 210, and blowing on the insulating substrate 210. And a casing 270 surrounding the insulating substrate 210 and the blower 260.

The plurality of insulating substrates 210 are arranged in series so that side surfaces of the insulating substrates 210 face each other. By arranging the insulating substrates 210 in such a structure, the entire thickness of the surface heating apparatus can be minimized to enable a slim design and at the same time, sufficient capacity to generate heat can be secured.

The casing 270 is formed with an intake port 271 through which air outside the planar heating apparatus flows, and an exhaust port 272 through which air inside the planar heating apparatus is discharged to the outside. The intake port 271 is disposed above the insulating substrate 210, and the exhaust port 272 is disposed below the insulating substrate 210. In addition, the blower 260 is disposed between the inlet port 271 and the insulating substrate 210.

In general, the air heated by the insulating substrate 210 is moved to the upper side of the space to be heated, heat tends to be wasted. However, as described above, when the blower 260 forms an air flow that sucks external air through the intake port 271 of the upper side of the insulating substrate 210, the air that has been heated and moved upward is insulated due to the air flow. It is moved back to the substrate 210 and reheated.

Since the air heated by the insulating substrate 210 is forcedly circulated due to the action of the blower 260, it is possible to save time required to heat the heating space to a desired temperature. Therefore, the energy consumption can be reduced, and thermal efficiency is increased.

7 is a side sectional view of a planar heating apparatus according to still another embodiment of the present invention. The planar heating apparatus according to the embodiment shown in FIG. 7 is installed on the wall surface 390, and includes an insulating substrate 310 and an insulating substrate 310 on which a resistance heating layer 320 and an electrode layer 330 are formed. Blown toward the mounting portion 340 into which the edge is inserted, the connection terminal 350 disposed between the mounting portion 340 and the insulating substrate 310 to apply a current to the electrode layer 330, and the insulating substrate 310. A blower device 360, an inlet 371 and an exhaust port 372, and a casing 370 that surrounds the insulating substrate 310 and the blower device 360 are provided.

The planar heating device may also have heat reflecting plates 383 and 384 disposed on the inner side of the casing 370 facing the insulating substrate 310. The heat reflectors 383 and 384 function to reflect heat toward the insulating substrate 310 such that heat radiated from the insulating substrate 310 is not directly radiated to the wall surface 390 or to the outside.

The planar heating device may have high temperature insulations 381 and 382 on the inner side of the casing 370. By using the high temperature insulating materials 381 and 382, the high temperature heat generated by the insulating substrate 310 is not directly transferred to the outside, thereby ensuring stability of the planar heating apparatus.

The planar heating apparatus may further include an air purification filter 380 disposed in the intake port 371. The air purification filter 380 filters out foreign matters contained in the air flowing through the intake port 371. The planar heating apparatus may maintain comfortable indoor air using the air purification filter 380, and greatly reduce the risk of fire by removing ignitable contaminants included in the air.

The planar heating device may further include a decorative material 385 on the outer surface of the casing 370. The decorative material 385 is to obtain an interior interior effect, and may include a picture or a picture attached to an outer surface of the casing 370, and a transparent glass disposed to cover the picture or a picture. In this way, the surface heating apparatus attached with the decorative material 385 may perform a function of decorating the room in addition to the heating function of heating the space.

Although the present invention has been described with reference to the above-described embodiments, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the appended claims.

1 is an exploded perspective view of a planar heating apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an assembled state of the planar heating device according to the embodiment shown in FIG. 1. FIG.

3 is an exploded perspective view showing a mounting portion and a connection terminal of the planar heating apparatus according to the embodiment shown in FIG. 1.

4 is a perspective view of a planar heating apparatus according to another embodiment of the present invention.

5 is a cross-sectional view of a planar heating apparatus according to still another embodiment of the present invention.

6 is a perspective perspective view of a planar heating apparatus according to still another embodiment of the present invention.

7 is a side sectional view of a planar heating apparatus according to still another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

41: fixed plate 390: wall surface

42: bolts 10, 110, 210, 310: insulating substrate

51: wiring 60, 260, 360: blower

80: circuit board 70, 270, 370: casing

81: Air flow 71, 271, 371: Intake vent

82: countercurrent flow 72, 272, 372: exhaust port

43, 143: mounting groove 30, 130, 230, 330: electrode layer

320: heating layer 40, 140, 240, 340: mounting portion

20, 120, 220: resistive heating layers 381, 382: high temperature insulation materials

380: air purification filter 383, 384: heat reflectors

385: decorative material 50, 150, 250, 350: connection terminal

Claims (12)

Insulating substrate; A resistive heating layer formed on the insulating substrate and generating heat when a current is applied; An electrode layer extending along an edge of the insulating substrate and connected to the resistance heating layer; A mounting portion of a non-conductive material having a mounting groove into which an edge of the insulating substrate is inserted; And And an electrically conductive connecting terminal disposed between the mounting groove and the insulating substrate so as to contact the electrode layer and apply a current. The method of claim 1, And a plurality of the insulating substrates are disposed to face each other, and each of the connection terminals coupled to each of the insulating substrates is electrically connected to each other. The method of claim 1, And a plurality of said insulated substrates are arranged in series so that side surfaces of each other face each other. The method of claim 1, And a blower for blowing toward the insulating substrate. The method of claim 4, wherein And a casing surrounding the insulating substrate and the blower. The method of claim 5, The casing is provided with an inlet port through which the outside air is introduced, and an exhaust port through which the inside air is discharged to the outside. The method of claim 6, The intake port is disposed above the insulated substrate, and the blower is disposed between the intake port and the insulated substrate. The method of claim 7, wherein And an air purifying filter disposed at the intake port to filter foreign matter from the air. The method of claim 6, And the exhaust port is disposed under the insulating substrate. The method of claim 6, And the size of the intake port is larger than that of the exhaust port. The method of claim 5, The casing is provided with a heat reflection plate on the inner side facing the insulating substrate, the heat reflecting plate reflecting the heat generated by the insulating substrate. The method of claim 5, The casing is provided with a decorative material on the outer surface, planar heating apparatus.

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