JPS60200031A - Infrared panel heater - Google Patents

Abstract

PURPOSE:To prevent a peeling off of a ceramic coating by a method wherein the ceramic coating is immersed in a carbon fabric in a heater composed of a carbon fabric, ceramic coating and synthetic rubber or the like. CONSTITUTION:Ceramic infrared radiation coating 2 is immersed into an upper half of a carbon fabric 1 and a heat-resistant adhesive agent 3 is immersed into a lower half part thereof. This carbon fabric 1 is adhered to a reinforcement material 4 such as a mica or the like. At this time, a heating body 6 can be placed between the carbon fabric 1 and the reinforcement material 4. With this arrangement, the ceramic coating is held in the carbon fabric, resulting in that its peeling off can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an infrared panel heater using carbon fiber cloth, heat-resistant non-conductive resin or synthetic rubber, and ceramic paint.

The first aspect of the present invention is to use a carbon fiber cloth as a heating element and impregnate the carbon fiber cloth with a ceramic paint to prevent the ceramic paint film from peeling off easily. I did it with a purpose.

In the second aspect of the present invention, the carbon fiber cloth is used only for reinforcing the ceramic coating, and the heating element is provided separately, thereby creating an infrared panel heater of any shape such as circular or cylindrical. The purpose is to provide /.

Carbon fiber, which is an inorganic fibrous material whose main sensing component is carbon, such as carbon fiber or graphite fiber, has high heat resistance and emits infrared rays, but due to its high carbon purity, it exhibits emission wavelength characteristics approximately equal to that of the black body part d+1. . but.

When used alone, it is mechanically weak, easily damaged, and easily wetted, making it unsuitable for panel heaters.

Therefore, the present invention is capable of emitting long-wavelength infrared rays with an emissivity close to that of carbon fiber, which exhibits characteristics close to black body radiation, by impregnating this carbon fiber cloth with an easy-to-handle ceramic paint. In addition, we have completed the most suitable radiator using the most suitable ceramic paint for the purpose, such as one for the human body that reduces short wavelengths (approximately 4 microns) or less.

Ceramic infrared radiation coating made from ceramic has many features such as electrical insulation, high thermal cycleability, and water-based coating. However, this is easy to mess up.

Therefore, in the present invention, we take advantage of the properties of the carbon fiber cloth as a reinforcing material and put wire mesh into the mortar to make the mortar practically stronger. This ceramic infrared reflective coat was mechanically reinforced with carbon fiber cloth, as well as other gelatinous fibers.

Incidentally, a non-woven carbon fiber cloth may be low in cost, but it is very thin and mechanically weak and easily damaged as it is, and has low workability. Moreover, it is not possible to select infrared wavelength characteristics according to the purpose. However, even if this carbon fiber cloth is impregnated with ceramic infrared emitting paint (coat) as shown in series -1, the thickness is 2.
It is extremely thin, ~5 mm, and has a large area, usually several tens of centimeters squared. Therefore, it is mechanically weak and is not practical on its own.

Therefore, the present invention has put this into practical use by adhering it to a substrate, sheet, or other reinforcing material.

By the way, the present invention can be divided into two parts depending on the selection of the heating element.

The first method is to use the carbon fiber cloth as one body. In other words, if this carbon fiber cloth is impregnated with a ceramic infrared radiation paint after providing a pair of electrodes, this carbon fiber cloth can be used as a heater. Heating the coat emits suitable infrared radiation. Since the ceramic infrared radiation coating is non-conductive, differences in coating thickness do not change the electrical resistance of the carbon fiber cloth.

By the way, the number of carbon fiber cloths is not limited to one, and two or more sheets may be used in a stacked manner in order to reduce the electrical resistance within a fixed area. In this case, it is sufficient to impregnate only one piece of ceramic infrared emitting paint on each surface, but how many pieces should be impregnated is determined in relation to thermal conductivity and workability, which are related to cost and start-up speed. Be free.

The above-mentioned pair of electrodes can be formed in nine different ways, such as by bonding a conductive paint containing silver or copper, copper foil, or the like to the carbon fibers with a conductive heat-resistant adhesive.

In the present invention, to mechanically reinforce 9 or more,
This was adhered to reinforcing materials such as substrates and sheets. For this adhesion, the above-mentioned ceramic infrared radiation coating and carbon m
There is a method of impregnating textile fabric, attaching it to the reinforcing material before drying, and adhering it with this ceramic infrared emitting paint.

Furthermore, since ceramic paint, which is a water-soluble paint, is often difficult to adhere to commonly used substrates such as mica, a separate means of adhesion using a heat-resistant non-conductive adhesive is used. Of course, the former is much better in terms of cost and labor savings. This adhesive.

Non-conductivity is not required since ceramic paints are electrically insulating.

In the latter case, the adhesive may be silicone, epoxy resin, polyimide, fluorine, or other synthetic rubber such as polybutadiene, which has excellent heat resistance and electrical insulation properties. These are good because they can withstand 200°C. Or, in addition to these, furan resin.

Examples include oxyhenzoyl polyester, polyamide, reinforced polyamide, polyamimidone, polyallylsulfone, polybutadiene, thermosetting polybutadiene, polynistersulfone, polyphenylene sulfide, polyphenylenesulfone, polysulfone, and the like. However, if the heat resistance of this adhesive is low, it is not possible to apply sufficient heating to the ceramic coat for infrared radiation.

Now, regarding the reinforcing material mentioned above, this is a mica plate.

There are glass fibers, one asbestos board, etc., but the invention is not limited to this, and the surface of one piece of equipment may be used directly as a reinforcing material, and the material may be directly attached to the surface in a factory or the like when the equipment is manufactured.

However, this reinforcing material is selected in relation to the adhesive. If mica is used as the reinforcing material, water-based ceramic infrared emitting paint can be used directly as described in J-4.
I can't bring myself to dress up. Therefore, it is very good to use materials that are adhesive to ceramic paints, such as asbestos, from the point of view of labor saving. however.

Asbestos poses a lung cancer problem.

In addition, if the ceramic infrared ray emissive paint described in J- is of the type that dries at room temperature, the NFF of one culm can be greatly reduced.

Finally, although the ceramic coat mentioned above has insulation properties,
Since some materials are hygroscopic, it is best to thinly coat the surface opposite to the side facing the reinforcing material with a heat-resistant, moisture-proof paint that is transparent to infrared rays, such as glass. of course.

Far-infrared transparent, heat-resistant resin such as silicone varnish may also be used.

Next, the second invention will be described.

This does not use carbon fiber cloth as a heating element.
The carbon fiber cloth is exclusively used for reinforcing the ceramic infrared radiation coating, and one heating element is separately provided between the reinforcing material such as the substrate and the carbon fiber cloth impregnated with the ceramic infrared radiation coating.

Therefore, the structure of the same part of the sen is based on the above-mentioned first invention, and only the structure of the different part will be described below.

First, the position of the first heating element is as described above. Any free heating element can be used as this heating element. Therefore, by using a linear heating element, it is possible to manufacture an infrared panel heater of any shape.

Therefore, a heat-resistant non-conductive adhesive such as the one described above is used to bond the heating element to the reinforcing material such as the substrate.

However, if this heating element is covered with an insulating material, non-conductivity is not required. Next, this heating element and the carbon fiber cloth coated with the above-mentioned ceramic paint may be bonded with this adhesive, or a ceramic infrared paint may also be used as in the first invention. Of course, the latter is far superior in terms of cost and energy savings.

In the first invention, when a carbon fiber cloth is used as a reinforcing material for a substrate that requires the use of an adhesive such as a mica plate, the process may be carried out as follows.

First, apply a thin layer of high-concentration silicone varnish, such as Shin-Etsu Silicone KR255, to a mica plate, etc., but apply too dense a layer of silicone varnish, and attach the carbon fiber cloth thereto before it completely hardens, that is, before the organic solvent disappears. Leave for 1 hour to allow the organic solvent to disappear. At this time, you may add heat to speed up the process. After this, the ceramic infrared rays are applied with a penetrating coating of 6+i.

Note that the electrodes may be provided first or after being bonded to the mica plate. It is best to use silicone varnish etc. that is semi-impregnated and adhesive.

As a result, the non-conductive resin is semi-impregnated from one side of the carbon fiber cloth and adheres to the mica and the like. Then, on the other hand, the ceramic paint will be semi-impregnated. This is suitable for relatively thick carbon fiber cloth or when it is not necessary to take a high amount of radiation per single ohm surface.

By the way, in the present invention, if the reinforcing material is made of a flexible material, the panel can be made into a cylindrical or semi-cylindrical curved shape, making it possible to concentrate and diffuse infrared radiation, which can be used for various treatment devices and humidifiers. Suitable for utensils, etc.

If the angle of this curved surface is freely adjusted, it will be possible to match the winning object more freely, resulting in an excellent product.

The structure of the infrared panel heater of the present invention is as described above.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An infrared panel heater according to the present invention will be explained below using various embodiments thereof and together with the accompanying drawings.

FIG. 1 shows the first infrared panel heater according to the present invention.
1 is an enlarged side view of a part of an embodiment of the invention; FIG.

First, there is a carbon fiber cloth 1. This carbon fiber cloth 1
The upper half is impregnated with ceramic infrared radiation paint 2, and the lower half is heat resistant (resistant to about 200°C).
It is impregnated with a non-conductive adhesive 3. With this adhesive, the carbon fiber 7t51 is bonded to the reinforcing material 4 such as mica, which is the substrate, and is mechanically reinforced. In addition,
If this reinforcing material 4 is made of a material to which the water-soluble ceramic infrared emitting paint 2 adheres, the adhesive 3 described above is unnecessary and the entire carbon fiber cloth 1 can be impregnated with the ceramic infrared transmitting paint 2. Good. Furthermore, a portion of the electrode 5 that is electrically connected to the carbon weave 171 is provided. This condition is shown in dotted lines in the plan view of FIG.

Next, the second invention will be explained. This is shown in an enlarged side cross-sectional view of a portion of one embodiment thereof. First, as in the first invention, there is a carbon fiber cloth 1, the upper half of which is impregnated with a ceramic infrared radiation coating 2 and dried, and the lower half of which is impregnated with a thermally nonconductive coating 3. has been done.

And 9 heating elements 6 are connected to the above-mentioned carbon fiber cloth 1 and reinforcing material 4.
is established between. The carbon fiber 1 described above is bonded to this heating element 6. Of course, if this heating element 6 is made of a material to which the water-soluble ceramic infrared radiation coating 2 is attached, instead of the adhesive 3 described above,
Ceramic paint 2 on the entire carbon fiber cloth above
All you have to do is impregnate it.

Finally, the reinforcing material 4 is bonded to the heating element 6 using a heat-resistant non-conductive adhesive (not shown).

In both inventions, an infrared-transparent heat-resistant moisture-proof film 8 may be provided on the surface thereof, that is, on the side opposite to the side facing the reinforcing material 4, if necessary. These include glass paints and resins such as polyester, silicone, and resin.

Also, if the above reinforcing material is made flexible.

As shown in the perspective view of FIG. 4, a cylindrical panel heater 7 can be made. Similarly, it can be formed into nine curved surfaces as shown in the side views shown in FIGS. 5 and 6, and can be used for concentrating and diffusing infrared radiation. In addition, a wave-shaped surface shape or a corner-bent surface shape is also possible.

Finally, in the second invention, if the heating element 6 is made into a linear type as shown in the plan view shown in FIG.

It is possible to manufacture the infrared panel heater 7 in a completely free shape such as a circle.

As a result of the above, the infrared panel heater according to the present invention becomes a low-cost and labor-saving panel heater, and in one embodiment, various shapes, curved surfaces, and folded surfaces are possible. Its uses have been further expanded.

[Brief explanation of drawings]

Figure 1 shows 1 the 2nd diagram of the infrared panel heater according to the present invention.
1 is an enlarged side sectional view of a part of an embodiment of the invention; FIG. FIG. 2 is an enlarged side view of a part of an embodiment of the second invention. FIG. 3 is a plan view of the carbon fiber cloth and its pair of electrodes. FIG. 4 shows a perspective view of another embodiment. FIG. 5 is a side view of another embodiment, which uses concentrated infrared radiation. FIG. 6 is a side view similar to FIG. 5, and is of an infrared diffused radiation melt. FIG. 7 is a plan view of an embodiment of the heating element of the second invention. 1... Carbon fiber a 2... Ceramic infrared radiation paint 3... Adhesive 4... Reinforcement material 5... Electrode 6... Heating element 7... Infrared panel heater 8... Heat-resistant moisture-proof membrane patent applicant Kubo Shoji Co., Ltd. Patent attorney Takashi Miyagi 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Hiraito fL= ? Yamashoso F June 1980 2211 Commissioner of the Japan Patent Office Floating type, W Ge;
No. 55694 2 Name of the invention Infrared bar? , Le heater 3 Person making the amendment's relationship with the matter Patent applicant 4th Burial person 150 Telephone 4141-72021
1 Location 20 Norohiru 1-28-13 Matsuio, Shibuya-ku, Tokyo
Number of inventions to be added by 1 (1,su) to the amendment 77Yamamasa's detailed description of the invention in the detailed description of the invention "There is." followed by "In this case, the linear heating element has a
The heat cannot be balanced between the balanced area and the line. Therefore, this thermal imbalance results in lower infrared radiation efficiency. Therefore, when using a linear VI generator, a sheet of a good thermal conductor such as the same plate is installed between the 2 heating elements 6 and the ceramic infrared radiator 2 to average the heat fractionally. good. In this case, if necessary, an electrically insulating sheet such as a cloud (2) (a sheet with good conductivity may be provided) between the two heating elements 6 and the FJI conductive body. ” is inserted.

Claims (9)

[Claims] (1) Carbon fiber cloth, non-conductive ceramic infrared emitting paint impregnated into the carbon fiber cloth and dried, reinforcing material such as a substrate or sheet for mechanically reinforcing the carbon fiber cloth impregnated with the ceramic infrared emitting paint. , and a pair of electrodes that are electrically connected to the carbon fiber cloth described above. (2) Carbon fiber cloth, a non-conductive ceramic infrared ray paint impregnated into the carbon fiber cloth and dried, a substrate or sheet for mechanically reinforcing the carbon fiber cloth impregnated with the ceramic infrared radiation paint, etc. a reinforcing material, a heating element provided between the reinforcing material such as the substrate or sheet and the carbon fiber, and silicone or epoxy resin for bonding the heating element and the reinforcing material such as the substrate or sheet. ,
An infrared panel heater characterized by being composed of a heat-resistant non-conductive adhesive such as fluororesin, polyimide, synthetic rubber such as polybutadiene, etc. (3) The infrared panel heater according to claim (+) or (2), wherein the carbon fiber cloth is composed of two or more layers stacked on top of each other. (4) Claim (1) characterized in that the ceramic infrared emitting paint is of a type that dries at room temperature.
Or the infrared panel heater described in (2). (5) Claim (1) or (5) characterized in that the carbon fiber cloth is bonded to a reinforcing material such as a substrate or sheet for reinforcing the cloth with a ceramic infrared emitting paint.
The infrared panel heater described in 2). (6) Carbon fiber cloth is silicone, epoxy resin,
Claim (1) characterized in that the material is bonded to a reinforcing material such as a substrate or sheet with a heat-resistant non-conductive adhesive such as a synthetic rubber such as fluororesin, polyimide, or polybutadiene. Infrared panel heater as described. (7) Claims (1) characterized in that the reinforcing material such as a substrate or sheet for reinforcing is heat insulating.
) or the infrared panel heater described in (2). (8) The surface of the non-conductive ceramic infrared ray emitting paint impregnated with carbon fiber IG and dried is coated and the infrared rays transmitting material such as polynystil is applied to the surface opposite to the side facing the reinforcing material such as the substrate or sheet. Claims Fjlil (1) reciting that the invention is provided with thermal moisture-proofing and desorption.
Or the infrared panel heater described in (2). (9) Carbon fiber cloth is silicone, epoxy 4a4
The infrared ray according to claim (2), characterized in that the heating element is bonded to the heating element with a heat-resistant non-conductive adhesive such as synthetic rubber such as oil, fluororesin, polyimide, or polybutadiene. panel heater.