JPS61128017A - Infrared ray burner - Google Patents

Abstract

PURPOSE:To provide an infrared ray burner having a high anti-corrosion characteristic by a method wherein organic silicon polymer is applied as a binder, coating material having non-organic filler agent dispersed and mixed therein is coated on the surfaces of the heat-resistant metallic wires and thereafter the wires are woven to form nets and then the wire nets are overlapped to each other to make a combustion surface. CONSTITUTION:Ferrite heat-resistant steel 2 is applied in heat-resistant metallic wires 7, organic silicon polymer having polyborosiloxane as a major constituent is applied as a binder, and then MgO is mixed with it as a filler agent. The agents are dispersed with attritor and made as paint material and then the heat-resistant metallic wires 7 are convered with it and processed. The heat- resistant metallic wires 7 having coated layers 6 are woven in a plain weave toform a wire not. Three layers of wire nets are overlapped to make an infrared ray burner. With the foregoing arrangement, thickness of the coated layer shows a uniform value and no cracks and peelings of the coated wires due to disturbances in thickness of coated film during heating and cooling operations are generated. Therefore, it is possible to prevent completely a corrosion of the wires.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an infrared burner mainly used for cooking, which has improved corrosion resistance and durability.

Conventional technology Conventional infrared burners with an infrared radiation surface include ceramic burners in which a large number of flame holes are provided in a fireproof plate whose main component is a front plate, wire mesh burners in which each wire mesh is used as a flame hole, A Bunsen burner was used to heat the surface of the refractory part, making it red-hot.

Problems that the invention aims to solve However, ceramic burners have weak mechanical strength, take a long time to heat up, and have low efficiency in generating infrared rays. wire mesh burners have an advantage in radiation efficiency because they use materials with excellent heat conduction; however, due to considerations for high-temperature corrosion, the temperature should not be set too high. When used for cooking, etc., it corrodes in a short period of time because it is exposed to corrosive environments such as steam, salt, oil, and seasonings, and it has various problems such as lack of durability. Ta.
The present invention solves these conventional problems and aims to provide an infrared burner in which the corrosion resistance of the wire mesh, which determines the durability of the burner, is dramatically improved.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention uses an organosilicon polymer containing siloxane as a main component as a binder, and disperses and mixes an inorganic filler in this binder. After coating the surface of the heat-resistant metal wire with the paint, the coated metal wire is braided to form a wire mesh, and a plurality of wire meshes are arbitrarily stacked to form a combustion surface.

Effects of the present invention Due to the above-described structure, the coating is applied in a linear manner, so there is no abnormality of the paint, no burrs, no smudges, no spots, etc., and the coating layer is finished uniformly, so cracks in the coating layer due to heating and rapid cooling are avoided. This product significantly improves durability and reliability by preventing wet corrosion on the gas supply side, abnormal oxidation on the red-hot side, and abnormal corrosion caused by salt and steam under repeated on-off cycles. It is something that can be done.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In Figs. 1 and 2, an infrared burner is constructed in the form of a plate, and 1 is a combustion surface 3 constructed by arbitrarily overlapping a plurality of wire meshes 2 to prevent blowing out due to gusts, etc., and 4 is a gas supply. 5 is a fixed frame for holding the combustion surface 1.

The wire mesh 2 is made of a heat-resistant metal wire 7 on whose surface a coating layer 6 of a paint containing an organosilicon polymer as a binder has been formed in advance, and is braided by a plain weave tatami weave or other method.

In the infrared burner, the gas mixed with air through the air suction port 3 and the mixing tube 4 reaches the inside of the combustion surface 1, and is ejected from the mesh of the wire mesh 2, igniting and burning at the same time, raising the temperature of the surface.
It glows red-hot at temperatures between 900°C and 900°C and emits strong infrared rays. When an infrared burner is used for cooking, a large amount of steam, salt, soy sauce, seasonings, etc., as described above, are present.

Here, since the combustion side of the wire mesh 2 is red-hot, it undergoes oxidation due to the high temperature. In addition, although the gas supply side portion is cooled by the gas and the temperature does not rise much, it is subject to severe corrosion in a mixed environment containing a large amount of crystal gas and salt. Infrared burners are used by stacking multiple infrared burners to ensure stable combustion by preventing blowing out due to gusts of wind during combustion, extinguishing due to sudden boiling over, or backfire phenomena. The heat-resistant metal wire 7 of the infrared burner is made of ferritic heat-resistant steel, especially Fs-Cr.
-AI based alloys are the most common. The infrared burner has a structure in which multiple sheets are stacked one on top of the other, and the gas supply side and the incandescent side are completely different in terms of temperature, use environment, and corrosion environment, but polyborosiloxane has excellent heat resistance, salt water corrosion resistance, oxidation resistance, and steam resistance. Since the coating layer 6 is formed of an organosilicon polymer mainly composed of There is no cutting of the wire mesh 2 due to progress, and the durability of the burner is greatly improved.

FCH-2 was used for the heat-resistant metal wire 7, an organosilicon polymer (SIC polymer/Showa Electric Cable SMR-32:l) containing polyborosiloxane as the main component was used as a binder, and MgO was mixed as a filler. The heat-resistant metal wire 7 was coated and treated with the abrasive paint using a lighter.The film thickness was 10 to 15μ, and the final coating was heated to 600"C for 15 minutes.
It is sintered separately. The heat-resistant metal wire 7 having the coating layer 6 was braided into a plain weave to form a wire mesh, and this wire mesh was stacked in three layers to form an infrared burner. The infrared burner of the present invention is installed in a gas staple, burns for 15 minutes, extinguishes for 15 minutes,
When the test of 8-hour combustion and 16-hour extinguishing was repeated, no cracks or peeling of the coating layer 6 was observed whether it was exposed to the gas supply side or the red-hot side, and it had excellent durability.

The coating layer of organosilicon polymer whose main component is polyborosiloxane does not change at all even when heated under red-hot conditions for a long time.
Although it is a dense film, it is highly flexible and has excellent adhesion. Furthermore, it is thought that heat resistance stability and the like were improved because an inorganic filler such as MgO was dispersed. The type and amount of filler added are not particularly limited and can be selected arbitrarily as appropriate.

Effects of the Invention As described above, according to the present invention, since the wire mesh is constructed by braiding heat-resistant metal wires coated with an organosilicon polymer, the thickness of the coating layer is uniform, and heating due to variations in film thickness is avoided. - No more cracking or peeling during cooling. Therefore, corrosion can be completely prevented, and there will be no reduction in combustibility, embrittlement of the wire mesh, poor combustion due to cutting, etc., and backfire phenomena, and the durability of the infrared burner can be significantly improved.

[Brief explanation of the drawing]

Figures 1a and b are plan views showing the infrared burner, section l1il.
Figure i and Figures 2a and 2b are a cross-sectional view and an enlarged cross-section of a main part showing an infrared burner according to an embodiment of the present invention. 1... combustion surface, 2... wire mesh, 6...
...Covering layer, 7...Heat-resistant metal wire. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure CFL) 2.Gaoka? (b)

Claims (1)

[Claims] After coating the heat-resistant metal wire with a paint made by using an organosilicon polymer mainly composed of polyborosiloxane as a binder and dispersing and mixing an inorganic filler into the binder,
An infrared burner in which the coated heat-resistant metal wires are braided to form a wire mesh, and a combustion surface is formed by overlapping an arbitrary number of the wire meshes.