JPH0252163B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wick for combustion appliances such as oil stoves and oil stoves that use kerosene as fuel. This invention relates to a wick for a combustion appliance that is made to be as good as possible.

Conventionally, there has been a wick for a combustion appliance in which a thick fabric made of cotton yarn or a blend of cotton yarn and rayon yarn is used as a fuel suction part, and a flame-resistant thick fabric made of glass fiber or glass fiber/carbon fiber is placed on top of it as a combustion part. It has been used for a long time as the most typical core.

Such cores, however, have the disadvantage of requiring the use of special machinery to produce thick fabrics, resulting in low productivity and high costs. In other words, thick fabrics use very thick cotton threads such as eight strands of #10 yarn as warp threads, have a special weaving structure, and are so thin that they cannot be fabricated using regular machines and are expensive. It was not possible to manufacture it with high productivity.

In order to increase the productivity of wicks for combustion appliances, a woven or knitted fabric made mainly of glass fibers is prepared in advance, and a smooth-surfaced felt made mainly of glass fiber wool is prepared separately. There is an attempt to manufacture a thick wick for a combustion appliance without using a special machine by placing the above-mentioned felt on both or one side of the wick and hammering them together with a needle machine needle. (Refer to Utility Model Publication No. 45-13978).

Also, as a similar structure, instead of the smooth-surfaced felt mainly made of glass fiber wool, a felt made by intertwining and compressing metal fibers or carbon fibers is used (see Utility Model Application Publication No. 50-75434). Or one using felt mainly made of wool-like acrylic synthetic resin fiber, which has better heat resistance than glass fiber (Japanese Utility Model Publication No. 49-140732).
It has been known. Since these wicks for combustion appliances also use woven or knitted fabrics mainly made of glass fibers, it is clear that they are wicks with improved oil storage properties like the previous wicks.

However, none of the above-mentioned wicks can be said to have excellent fuel suction performance, and they have had problems in achieving smooth combustion and other high calorific values.

Therefore, for the purpose of improving the fuel suction performance of the above-mentioned wick for combustion appliances, Japanese Patent Publication No. 49-36170 discloses the following:
Thick warp threads made by simply bunching or twisting glass, cotton, or other fibers are arranged horizontally, and the glass fiber material layers are deposited like cotton in different directions on both the front and back sides of the fibers, which are polymerized and processed from both the front and back sides. A combustion wick has been proposed in which a special needle is inserted to form uneven portions in the front and back directions of the warp threads, and the glass fiber material is embedded in the recessed portions. Sometimes, even if a warp yarn with simply bundled fibers is used, the fibrous material deposited on the front and back surfaces, like polymerized cotton, is inserted into both the front and back surfaces using a special needle with bulges on the front, back, left and right sides. As a result, unevenness is formed in the warp yarns in the front and back directions, and the fiber material is embedded in the recesses, so even though oil storage may be improved, capillary action is inhibited by the bending of the unevenness that occurs in the bundled fibers. Therefore, sufficient oil wicking action cannot be expected.

The present invention was made in view of the above circumstances, and provides good fuel wicking performance by aligning the long fibers constituting the heat-resistant combustion part of the wick for a combustion appliance in substantially one direction in the fuel wicking direction. The purpose is to demonstrate.

That is, in the wick for a combustion appliance of the present invention, the heat-resistant combustion part is formed by gradually expanding untwisted tow made of heat-resistant long fibers while applying mechanical vibration, and pulling the wick in substantially one direction. It is composed of one or more long fiber layers consisting of a large number of aligned heat-resistant long fibers, and multiple layers of heat-resistant short fiber random web layers, and these long fiber layers and short fiber web layers The short fiber random web layers are alternately laminated to form the outermost layer so that they are physically integrated so as not to peel off, and the direction of alignment of the heat-resistant long fibers is made parallel to the fuel suction direction. It is characterized by being connected to the suction part.

The wick for combustion appliances of the present invention can be suitably used as a wick for combustion appliances such as base tank type or cartridge tank type oil stoves and oil stoves. In other words, as the combustion time of base tank type combustion appliances increases, the fuel level in the base tank decreases, and as a result, with conventional wicks, the suction of fuel gradually decreases, resulting in a weakening of the firepower or a natural loss of fuel. However, since the wick of the present invention has high suction performance,
Even if the fuel level drops, the required amount of fuel can continue to be constantly supplied to the combustion section.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In Figs. 3 and 4, reference numeral 1 denotes a core formed in a cylindrical shape, to which fuel suction parts 3, 3' are integrally connected to the lower part of the heat-resistant combustion part 2 by means such as sewing with a sewing machine 4.
It is formed by 5 is a reinforcing tape coated and pasted on the outer surface of the connecting portion 4. In addition, core body 1
In addition to being cylindrical, it may also be flat.

The heat-resistant combustion section 2 comprises a non-twisted tow consisting of a large number of heat-resistant long fibers, such as carbon fibers, glass fibers, ceramic fibers, asbestos fibers, etc., alone or in a mixture, which are substantially aligned in one direction. As an example, both one or more layers of a fabric-like long fiber layer 2a and the short fiber random web layer 2b are formed by gradually expanding while applying mechanical vibration by the means shown in Japanese Patent Publication No. 50-10962. are laminated alternately so that the short fiber random web layer is located at the outermost layer (Figures 1 and 2), and are physically integrated by means such as needle punching or stitch bonding so as not to peel off, and the heat-resistant length is The fibers are connected to the upper part of the fuel suction parts 3, 3' as described above so as to be parallel to the fuel suction direction.

In order to give shape retention to the long fiber layer 2a, an appropriate adhesive may be applied when or after arranging the long fibers in one direction as described above. When integrating the web layers, it is necessary to insert the latter random short fiber web into a large number of aligned long fibers without bending them. The punch is
An ordinary needle with a hook-shaped hook on the side of the needle can be used. Furthermore, the long fiber layer 2a can be given a desired thickness by stacking a plurality of layers as necessary. 3
As shown in the figure and FIG. 4, the long fiber layer 2a
Short fiber random web layer 2b with one layer as an intermediate layer
From the structure with two layers as the outer layer, Figure 2 B,
As shown in C, a structure may be adopted in which a plurality of long fiber layers 2a and short fiber random web layers 2b are alternately laminated so that the short fiber random web layer 2b forms the outermost layer.

For the short fiber random web layer 2b, heat-resistant fibers such as carbon fibers, glass fibers, ceramic fibers, and asbestos fibers can be used alone or in combination.

Further, the fuel suction part 3 is made of, for example, rayon, which has good fuel suction characteristics, as shown in FIG.
Cellulose acetate, polyamide, acrylic,
It may be formed from woven or knitted fabrics of fibers such as polyester, polyvinyl formal, polyethylene, polypropylene, polyvinyl chloride, wholly aromatic polyamide, cotton, hemp, wool, etc. In Figs. As shown in the symbols in parentheses and in FIG. 4, the fuel wicking part 3 is made by physically integrating short fiber random web layers 3b by alternately laminating the long fiber layers 3a of the fibers with good fuel wicking properties and the short fiber random web layers 3b. '.

According to the present invention, the long fiber layer used in the heat-resistant combustion section gradually expands an untwisted tow consisting of a large number of heat-resistant long fibers aligned substantially in one direction while applying mechanical vibrations. Since the core is shaped like a fabric, the thickness of the core can be adjusted appropriately by selecting the number of long fiber layers, making processing accurate and easy. Since the random short fiber web is inserted between the long fibers in the fabric shape and does not impede the linearity of the long fibers, a large number of capillaries in the long fiber layer are aligned in parallel to the fuel suction direction. As a result, the fuel suction speed is significantly accelerated, and its performance is dramatically improved compared to conventional products, resulting in a high calorific value. By making the distance (height) of Even if the liquid level of the fuel decreases over time, good suction of fuel can be maintained and a constant supply of fuel can be achieved.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway plan view of a heat-resistant combustion wick according to an embodiment of the present invention, Fig. 2 is a sectional view of the main part, and Figs. 3 and 4 are partially cutaway slope views of a cylindrical wick. . 1... Wick for combustion appliance, 2... Heat resistant combustion part, 3,
3′... fuel suction part, 2a, 3a... long fiber layer,
2b, 3b... Short fiber random web layer.

Claims (1)

[Scope of Claims] 1. A wick for a combustion appliance in which a heat-resistant combustion part and a fuel suction part are vertically connected, wherein the heat-resistant combustion part applies mechanical vibration to an untwisted tow made of heat-resistant long fibers. A fabric-like long fiber layer or layers consisting of a large number of heat-resistant long fibers aligned in substantially one direction, formed by gradually expanding the fibers while being applied, and a heat-resistant short fiber random web layer. The long fiber layer and the short fiber web layer are laminated alternately so that the short fiber random web layer forms the outermost layer and are physically integrated so as not to peel off. A wick for a combustion appliance, characterized in that the heat-resistant long fibers are aligned in a direction parallel to the fuel suction direction and connected to the fuel suction part. 2. The wick for a combustion appliance according to claim 1, wherein a large number of long fibers in the long fiber layer are made of carbon fiber, glass fiber, ceramic fiber, asbestos fiber, etc. alone or in combination. 3. The wick for a combustion appliance according to claim 1, wherein the short fiber random web is made of carbon fiber, glass fiber, ceramic fiber, asbestos fiber, etc. alone or in combination. 4. The wick for a combustion appliance according to claim 1, wherein the long fiber layer and the heat-resistant combustion part are physically integrated so as not to separate by needle punching or stitch bonding. 5. The wick for a combustion appliance according to claims 1 to 4, wherein the fuel suction part is a woven fabric, a knitted fabric, or a woven (knitted) fabric. 6. The wick for a combustion appliance according to claims 1 to 4, wherein the fuel wick is formed by physically integrating long fiber layers and short fiber random web layers alternately laminated.