JPH0253685B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a wick for a combustion appliance used in an oil stove, an oil stove, etc. that use kerosene as fuel.

[Prior art and its problems]

Conventionally, this type of wick for a combustion appliance has a fuel suction part made of a thick woven or knitted fabric such as cotton yarn alone or a blend of cotton yarn and rayon, and a thick fabric such as glass fiber alone or a blend of glass fiber and carbon fiber on the upper part. It consisted of a flat or cylindrical core to which a heat-resistant combustion part consisting of a knitted or knitted body was integrally connected.

However, in terms of performance, wicks for combustion appliances with this type of structure have drawbacks such as the wick being soft and stiff, with large variations in dimensions, and poor fuel wicking performance. However, there are many drawbacks such as extremely low productivity, high costs, and the inability to increase production. In particular, since the fuel suction section mainly uses yarn, the above drawbacks cannot be improved.Furthermore, if woven fabric is used, the warp is made of very thick cotton yarn, such as 10 count 8-twist yarn, and the narrow width is used. In addition, due to the special weaving structure, the number of looms is limited, and the area used is large, so shortages of supply have often been a problem.

Several attempts have been made to improve the productivity of fabrics as fuel absorbing parts, but for example, in the case of knitted fabrics using a weft insertion warp knitting machine (ratssel knitting machine), the thickness of the fabric obtained is not sufficient, so The drawback was that unless measures were taken, such as stacking several layers, it was not possible to obtain the suction of fuel necessary to sustain combustion.

In addition, felt-like fabrics with random fiber orientation can have any thickness, but the direction of the capillary tubes required for fuel wicking is unstable and discontinuous, making it difficult to obtain sufficient fuel wicking. It was hot.

Furthermore, as an idea to increase the productivity of wicks for combustion appliances, a woven or knitted fabric mainly made of glass fibers is prepared in advance, and a smooth-surfaced felt made mainly of glass fiber wool is prepared separately. There is a known attempt to manufacture thick wicks for combustion appliances without using a special loom by placing the above-mentioned felt on both or one side of a cloth and needling them to join them together (Jikkosho). (See Publication No. 45-13978). However, in the wick for combustion appliances described in the same publication, the felt is intertwined with the woven or knitted fabric, so when combustion is stopped, the flow of fuel is blocked and a large amount of fuel is trapped inside the woven or knitted fabric. Since it is stored, it has the disadvantage of prolonging the extinguishing time.

In addition, as a similar structure, instead of the smooth-surfaced felt made of glass fiber wool, a felt made by intertwining metal fibers or carbon fibers and then compressing them is used (see Utility Model Application Publication No. 75434/1987). ), or those using felt made of carbonized wool-like acrylic synthetic fibers that are more heat resistant than glass fibers (see Japanese Utility Model Publication No. 140732/1983) are known. However, these wicks for combustion appliances also use woven or knitted fabrics mainly made of glass fiber, so like the wicks mentioned above,
A disadvantage is that a large amount of fuel remains in the woven or knitted fabric.

Other cores shown in Special Publication No. 49-36170 are:
The warp is simply a collection of fibers such as glass or cotton, but this warp is made by arranging thick threads in a single layer horizontally, with layers of mixed cotton-like fiber material on both the front and back sides of the warp. By inserting a special needle with a bulging part on the side in the thickness direction after polymerization, a woven fabric state with uneven parts is formed as a whole, so the capillary tubes made of the fibers are uneven, Moreover, it is not straight in the oil suction direction, and both outer surfaces are uneven and irregular, resulting in various problems.

[Purpose of the invention]

The purpose of the present invention is to ensure dimensional stability, smooth the vertical movement of the wick, eliminate the problem of oil leakage, and further form a large number of uniform and fine linear capillaries made of long fibers even in thick parts. By doing so, it is possible to obtain a high calorific value by increasing the suction speed of liquid fuel and burning a large amount of fuel, and by increasing the height (distance) from the liquid level to the combustion part, the fuel can be heated to a high temperature. An object of the present invention is to provide a wick for a combustion appliance that can be prevented from being heated to a high temperature.

[Structure of the invention]

That is, the wick for a combustion appliance according to the present invention is made of a plurality of thin long fiber fabrics formed by uniformly opening non-twisted tow and aligning the long fibers in parallel in the same direction in a substantially straight line. The short fiber web layer and the long fiber layer are alternately laminated so that the short fiber web layer is the outermost layer, and the long fiber layer is laminated in the longitudinal direction to form a long fiber layer. The short fiber web layer and the long fiber layer are made into a fuel wicking part by making the outer surface smooth and integrating the short fiber web layer and the long fiber layer so as not to peel off. It is characterized in that the long fibers are oriented in the fuel suction direction, and a heat-resistant combustion part is integrally connected to the upper part of the fuel suction part.

According to such a configuration, the long fibers of the plurality of long fiber fabrics constituting the long fiber layer are arranged substantially parallel, so that the large number of capillaries are arranged in substantially straight lines along the fuel suction direction. The same effect as provided in the outermost layer can be obtained, and excellent fuel wicking performance can be obtained, and the long fiber layer is reinforced by the short fiber web layer to prevent tearing. The smooth outer surface of the short fiber web layer allows for good fitting and sliding between the wick and the combustion device, eliminating oil leaks and poor vertical movement of the wick, and the overall body is strong and durable. A core body with good dimensional stability can be obtained.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 4, reference numeral 1 denotes a core body formed in a cylindrical shape, and the core body 1 has a structure in which a heat-resistant combustion part 3 is integrally connected to the upper part of a fuel suction part 2. Here, the core body 1 may be formed into a flat plate shape as shown in FIG.

The fuel suction part 2 includes a long fiber layer 4 of an appropriate thickness made of long fibers arranged in a straight line in a layered manner in the fuel suction direction.
and a short fiber web layer 5, with the long fiber layer 4 interposed between them so that the short fiber web layers are the outermost layers (Fig. 4), or the long fiber layer 4 and the short fiber web layer 5. are laminated alternately in multiple layers (Fig. 6), and the outer surfaces of the short fiber web layers 5 of both outer layers are made as smooth as possible and are integrated so as not to peel off. The long fiber layer 4 is formed by laminating in the thickness direction a plurality of thin long fiber fabrics formed by uniformly opening untwisted tow and aligning the long fibers in parallel in the same direction. be.

The long fibers forming the above-mentioned long fiber fabric are made by gradually and uniformly spreading untwisted tows of nylon, polyester, etc. while applying mechanical vibrations.
10962), such long fibers are arranged approximately parallel to each other, and if necessary, an adhesive is applied to give the desired shape stability and create the desired long fiber fabric. Then, the long fiber layer 4 is obtained by laminating a plurality of sheets of this long fiber fabric in the thickness direction so as to be suitable for fuel absorption.

In addition to nylon and polyester, the above-mentioned long fibers can be made of rayon, acetate, acrylic, vinylon, polyethylene, polypropylene, glass fiber, polyvinyl chloride, aramid, carbon fiber, etc. alone or in combination, but in particular nylon Thermoplastic synthetic fibers such as polyester, polyethylene, and polypropylene are suitable for carrying out the present invention because their long fibers can be easily aligned in parallel during stretching.

Furthermore, short fiber webs include artificial fibers such as rayon, acetate, nylon, acrylic, polyester, vinylon, polyethylene, polypropylene, glass fiber, polyvinyl chloride, aramid, and carbon fiber, and natural fibers such as cotton, hemp, and wool. A species or a mixture of two or more species can be used.

Further, as a means for integrating the long fiber layer 4 and the short fiber web layer 5, for example, as shown in FIG. A method is used in which the long fiber layer 4 and the short fiber web layer 5 are sewn together with a sewing thread 7 as shown in FIG. 8 (stitchbond method). A punch is preferable, and since it is necessary to smooth both outer surfaces of the short fiber web layer 5 which is the outermost layer during the integration, the needle punch has a bulge that curves the long fibers into an uneven shape. It is advisable to use a commonly used barbed needle (for example, organ felt needle...registered trademark) that does not have a side surface.

Furthermore, in terms of fuel wicking ability, the higher the weight ratio of the long fiber layer 4 to the short fiber web layer 5, the higher the fuel wicking ability; however, this is dependent on the desired performance of the combustion appliance. Preferably, the former is 100 and the latter is 20 to 200, and most preferably the former is 100 and the latter is 50 or less.

Next, an example of implementing the present invention will be given.

Untwisted tows of polyethylene terephthalate filaments with a single fiber of 1.5 denier and a total of 30,000 denier are aligned in parallel, and while applying mechanical vibration, the single fibers are gradually opened so that the single fibers are almost parallel with a uniform thickness. Then, an acrylic ester adhesive was applied to obtain a long fiber fabric having a basis weight of 40 g/m ² . 12 of these long fiber fabrics are piled up to form a long fiber layer, and on each side one polyethylene terephthalate short fiber web layer with a basis weight of 100 g/m ² made of polyethylene terephthalate short fibers of 3 denier x 51 mm is placed on each side, and needle punched. It was made into one piece so that it would not peel off. The resulting fabric had a thickness of 2.5 mm.

According to the above configuration, as shown in FIGS. 9 and 10, when the core body 1 is held between the inner cylinder 22 and the outer cylinder 23 for holding the core body in a combustion appliance, the fuel suction part 2 Due to the fuel suction effect of the long fiber layer 4, the fuel stored below is sucked up, and this fuel is combusted in the upper heat-resistant combustion section 3. In this case, the long fiber layer 4 is formed by laminating in the thickness direction a plurality of long fiber fabrics formed by aligning long fibers in a substantially straight line parallel to the fuel suction direction. The fine capillary tubes are formed in a substantially (substantially) straight shape, and the fuel is sucked up sufficiently and at a high speed.

Therefore, after determining the amount of fuel sucked up by the long fiber layer 4 in relation to the model used, if you want to increase or decrease the thickness of the core 1 without affecting this, it is necessary to adjust the amount of short fibers. This allows you to adjust the overall thickness. Furthermore, the long fiber layer 4 is reinforced by the short fiber web layer 5, and the outer surfaces of both outer layers are smooth, making it possible to obtain a strong core that is difficult to tear, as well as to eliminate oil leakage. This allows for good vertical movement.

〔Effect of the invention〕

The present invention allows the thickness of the core to be determined freely, and
A product with constant dimensions and no variation can be obtained, and since each long fiber of the multi-ply long fiber fabric that constitutes the long fiber layer in the fuel suction section is aligned parallel to the fuel suction direction, a large number of long fibers can be obtained. Since the uniform fine capillary tubes are formed in a substantially linear shape, the fuel can be sucked up sufficiently and quickly, thereby increasing the combustion efficiency. For this reason, for example, to generate a calorific value of 2200 Kcal/H, a conventional kerosene stove wick produces approximately 85 to
Whereas a diameter of 90 mm was required, in the present invention, a diameter of 65 mm is sufficient, and the entire kerosene stove can be made compact.

In addition, the outer surface of the short fiber web layer forming the outermost layers of the fuel wicking part is smooth and does not have irregularities like a fabric, so it can absorb strong products and eliminate oil leakage. This allows the core to move up and down smoothly, making it durable for long-term use.

[Brief explanation of drawings]

Figure 1 is a perspective view of a cylindrical core according to an embodiment of the present invention;
The figure is a longitudinal sectional view of Fig. 1, Fig. 3 is a partially cutaway slope view of the fuel suction part, Fig. 4 is a longitudinal sectional view of Fig. 3, and Fig. 5 is a longitudinal sectional view of Fig. 3.
The figure is a partially cutaway slope view of a flat core, Figure 6 is a cross-sectional view of a multi-layered structure, Figure 7 is an enlarged cross-sectional view of a needle-punched case, Figure 8 is an enlarged cross-sectional view of a stitch-bonded case, and Figure 9 is an enlarged cross-sectional view of a case of stitch bonding. The figure is a sectional view of the main part of the core housed in the instrument, and FIG. 10 is a sectional view taken along the line AA' in FIG. DESCRIPTION OF SYMBOLS 1... Core body, 2... Fuel suction part, 3... Heat resistant combustion part, 4... Long fiber layer, 5... Short fiber web layer.

Claims (1)

[Claims] 1. A method in which a plurality of thin long fiber fabrics formed by uniformly opening untwisted tow and aligning the long fibers in parallel in the same direction in a substantially straight line are laminated in the thickness direction. to form a long fiber layer, the short fiber web layer and the long fiber layer are alternately laminated so that the short fiber web layer is the outermost layer, and the outer surfaces of both outer layers are smoothed. The short fiber web layer and the long fiber layer are integrated without peeling to form a fuel wicking part, and the long fibers of the long fiber fabric in the long fiber layer constituting this fuel wicking part are used to absorb fuel. A wick for a combustion appliance, characterized in that a heat-resistant combustion part is integrally connected to the upper part of the fuel suction part in an upward direction. 2. Claim 1, in which the long fiber layer and the short fiber web layer are integrated by needle punching.
Wicks for combustion appliances as described in section. 3. Claim 1, in which the long fiber layer and the short fiber web layer are integrated by stitch bond.
Wicks for combustion appliances as described in section. 4. A patent claim in which the long fibers are one or a mixture of two or more of rayon, acetate, nylon, acrylic, polyester, vinylon, polyethylene, polypropylene, glass fiber, polyvinyl chloride, aramid, and carbon fiber. A wick for a combustion appliance as described in Scope 1. 5 The short fiber web is made of rayon, acetate, nylon, acrylic, polyester, vinylon, polyethylene, polypropylene, glass fiber, polyvinyl chloride, aramid, carbon fiber, cotton, linen,
The wick for a combustion appliance according to claim 1, which is made of one type or a mixture of two or more types of wool.