JPH0313718A - Flame reaction object for ignitor - Google Patents

Abstract

PURPOSE:To enhance the coating strength when the coloring material is coated on a coloring material supporting piece by twining a plurality of element strands which make up the coloring material supporting piece so that there may be sufficient roughness on its surface. CONSTITUTION:The flame reaction object 3 for igniter comprises a coloring material support piece 1 and a coloring material 2 which shows a flame reaction, and the flame reaction support piece 1 has a twined structure where a plurality of element strands are twined. The coloring material 2 is coated on the surface of the coloring material support piece 1, and is chosen from suitable metallic oxides such as Cu2O, B2O3, In2O3, etc. which show a flame reaction depending on the flame color intended. Considering three factors of shock resistance, coloring starting time and coloring sustaining time, as the diameter of wire element, phi0.1 - 0.3 is best suited. The coating of the coloring material 2 on the coloring material support piece 1 should preferably be made firmly by a baking means. This way, the surface becomes sufficiently rough to allow the coloring material to firmly be coated on it.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to the structure of a flame reaction member for an igniter that colors the flame generated in an igniter such as a lighter using a flame reaction, and in particular, The present invention relates to an improvement in a flame color reaction member for an igniter, in which a coloring material exhibiting the following properties is adhered to a coloring material support serving as a base.

[Prior art]

The technical idea of coloring the flame of an igniter using flame color reaction has already been proposed, for example, in Utility Model Application No. 59-805.
There is No. 0, and the present applicant also filed a Utility Application No.
No. 5055 and Utility Application No. 1-9521 have already been filed.

However, there are still various problems inherent in the practical application of such flame reaction members for igniters.

[Problems with the prior art] That is, in such a conventional flame reaction member for an igniter, after ignition, the start time until the flame reaction member for an igniter is heated and exhibits a flame reaction is long (the start of color development is slow). There was a problem.

In addition, flame-reactive members for igniters, in which a color-forming material that exhibits a flame-color reaction is coated on a color-forming material support such as a thin metal plate or metal wire, serve as a base, and when an impact is applied, the color-forming material applied There was also the problem that the flame color reaction performance deteriorated due to falling off.

Furthermore, it is conceivable to use a large amount of coloring material in order to lengthen the duration of coloring, but it is practically difficult to apply too much coloring material to the coloring material support, so There was also the problem that the duration of color development was short because the amount was small.

The present invention aims to propose a structure of a flame reaction member for an igniter that is useful in practice and solves these problems.

[Means for solving problems]

In order to solve the above-mentioned problems, in the present invention, a coloring material support to which a coloring material exhibiting a flame reaction is deposited is constructed by twisting together a plurality of wire rods serving as a base material.

[Embodiments of the invention]

The present invention will be described in detail below with reference to the drawings.

In FIG. 1, reference numeral 3 denotes a flame color reaction member for an igniter, which is composed of a coloring material support 1 and a coloring material 2 exhibiting a flame color reaction.

The coloring material support 1 has a twisted wire structure in which a plurality of wire rods serving as a base are twisted together.

The coloring material 2 is adhered to the surface of the coloring material support 1.

Needless to say, the color forming material 2 is an appropriate metal oxide that exhibits a flame reaction, such as Cuz○, B2O3, InzO.
3 etc. and select as appropriate depending on the desired flame color.

The details will be explained in several paragraphs below.

■ Assuming that the amount of heat generated by the combustion of the flammable gas ejected from the nozzle of the igniter is constant, the smaller the heat capacity of the flame reaction member for the igniter, the faster the temperature rise of the flame reaction member for the igniter. The color starts to develop faster.

Therefore, the wire diameter of the wire rod serving as the base body should be made as small as possible, but on the other hand, if the wire diameter of the wire rod is made smaller than a certain limit, the flame reaction member for the igniter must be preformed into a certain shape. This is disadvantageous because it easily deforms due to impact, resulting in performance deterioration. Furthermore, if the wire diameter is too small, it becomes difficult to coat the wire with sufficient coloring material to ensure a sufficient duration of coloring, which is not preferable.

Therefore, when considering the above-mentioned three factors of impact resistance, color development start time 4, and color development duration, it is concluded that the wire diameter within a certain range is suitable for use in flame color reaction members of igniters. Become. The present inventor has determined that the above range is φ0.1 to φ0.
It was confirmed through experiments that 3 is the optimal value. Of course, the optimum wire diameter is not the same depending on the type or size of the igniter, but as long as it is within the above range, a substantially sufficient overall performance can be obtained.

■Next, in the flame reaction member 3 for an igniter, which has a structure in which the coloring material 2 is applied to the support 1, if the coloring material 2 is simply applied to the support 1, it will not adhere due to impact or the like. The coloring material may fall off and its coloring performance may be impaired. Therefore, it is desired that this adhesion be strong.

Therefore, it is preferable that the coloring material 2 be firmly adhered to the coloring material support l by baking.

For example, it is accomplished through the following steps. That is, first, the coloring material 2 is pulverized into a fine powder, and a solvent such as water or alcohol is added thereto to form a slurry having an appropriate viscosity. Next, the color forming material support 1 is immersed in this solution, then pulled out, and baked by heating it to a high temperature of 800° C. or higher. Repeat this dipping and baking process as many times as necessary.

■ The duration of coloring is proportional to the absolute amount of coloring material 2, and if coloring material 2 is in lumps or extremely thick, the heat capacity of the coloring material increases, so the temperature must rise quickly. Therefore, the time required to start coloring becomes significantly longer, and the coloring becomes less vivid.

Therefore, as a countermeasure to this problem, the flame reaction member for an igniter having the above-mentioned structure is formed into a coil shape by winding it a plurality of times as shown in FIG. It is preferable to aim for a further increase in . In this case, increasing the winding diameter of the coiled flame color reaction member 3 for the igniter can increase the amount of coloring material 2 deposited, but increasing the diameter beyond a certain level means that the flame color reaction member 3 for the igniter Since the heat capacity of the member 3 increases, the time required to start coloring becomes longer, which is disadvantageous. Therefore, there is also an appropriate range for this winding diameter. According to experiments, although the situation differs depending on the type and size of the igniter, φ0.6 to φ1. It has been found that a winding of the flame reaction member 3 for an igniter within a range of 8 is optimal.

(2) Since the coefficients of thermal expansion of the coloring material 2 and the coloring material support 1 do not match, the coloring material generally does not fit into the support.

Therefore, when the coloring material 2 is applied directly to the support 1, its adhesion strength is low. Some coloring materials 2 do not adapt to the support 1 at all and cannot be deposited thereon.

Therefore, when the support 1 is ignited to form an oxide film on the surface of the support, the coloring material 2 becomes more compatible, has increased adhesive strength, and has considerable impact resistance. The purpose of forming the oxide film is to alleviate the stress strain that occurs at the interface between the coloring material 2 and the support 1 due to the difference in thermal expansion coefficient between the two.

From this point of view, it is desirable that the support be heat resistant and capable of forming an oxide film. Such a support 1, that is, a wire rod as a base, is made of, for example, a nickel-chromium (Ni-Cr) alloy, an iron-chromium (Fe-C
r) A wire made of an alloy can be mentioned.

By the way, in order to easily replace the flame color reaction member 3 for an igniter with the igniter, it is preferable to support the flame color reaction member 3 for an igniter with a frame to form the flame reaction member 3 for an igniter. . In the embodiments shown in FIGS. 3 and 4, the above-described flame reaction member 3 for an igniter is clamped and supported by a frame 4 so that it can be easily attached to the igniter and replaced. , which have been newly created as flame reaction members 5 and 6 for igniters. The frame body 4 is, for example, a metal frame having a U-shaped cross section and formed into a circular shape. The flame color reaction member 3 for the igniter
are cut to an appropriate length, placed inside the frame 4, and their both ends are positioned in the internal space of the U-shaped cross section. Then, force is applied to the frame 4 from above and below. By caulking, the igniter flame reaction member 3 is clamped and fixed. In addition, as shown in Fig. 5, the igniter flame reaction member 3 is sandwiched between two ring-shaped frames 4a and 4b of the same size, and the two frames are fixed together by pressure welding in this state. death,
This may also be used as a flame reaction member 7 for an igniter. In addition,
The number of flame reaction members for the igniter may be one or more, and is selected as appropriate. In the embodiment shown in FIG. 3, three flame reaction members 3 for an igniter are arranged substantially parallel to each other inside the frame 4.

In addition, if the frame 4 and the like that sandwich the igniter flame reaction member 3 are formed of a material with as low thermal conductivity as possible, the heat of the igniter flame reaction member 3 will not be transferred to the frame 4, and the igniter flame reaction member 3 will be prevented from being transmitted to the frame 4. Since the flame reaction member 3 is kept at a high temperature, the flame reaction member 5.6 for an igniter has good characteristics such as color development start time and color clarity.
Alternatively, it is 7, which is more suitable.

FIG. 6 shows the flame reaction member 5 (or 6.
7) is shown attached to the igniter 8 (lighter).

[Effects of the Invention] As described below, in the present invention, a coloring material support is constructed by twisting together a plurality of wire rods serving as a base.

If the wires are twisted in this way, sufficient irregularities can be formed on the surface, and when a coloring material is applied, the degree of adhesion becomes strong. Furthermore, since it is a stranded wire, the heat capacity is smaller than that of a single wire of the same diameter, so the temperature rises quickly and the time it takes to start coloring is also faster.

[Brief explanation of drawings]

Fig. 1 is a partially sectional side view of a flame reaction member for an igniter according to an embodiment of the present invention, Fig. 2 is an external view of another embodiment, and Figs. 3 and 4 are other embodiments. FIG. 5 shows a side sectional view of another embodiment, and FIG. 6 shows an embodiment of the igniter including the flame color reaction member of the present invention. . 1... Coloring material support, 2... Coloring material, 3.4.5
．． 6...Flame reaction member for igniter, 8...Igniter.

Claims (1)

[Scope of Claims] A flame color reaction member for an igniter, which is formed by adhering a color former that exhibits a flame color reaction to a color former support, and is disposed near a combustible gas jetting part of the igniter, comprising the steps of: A flame reaction member for an igniter, characterized in that the body is made up of a plurality of twisted wire rods serving as a base material.