JPS5831205A - Wick - Google Patents

Abstract

PURPOSE:To enable to continue combustion in good condition for a wick, by composing a fuel vaporizing part with a porous body made of silica-alumina system, with heat-resistant, inorganic pigment added to it, and by providing a notched part on the edge of a vaporizing part. CONSTITUTION:A main wick 1 is composed of a porous body of silica-alumina system, and heat-resistant, inorganic pigment 4 is added to a fuel vaporizing part 3, while a flame spreading part 5, which is the edge of a vaporizing part 3, is provided with notched parts A. A wick, of which fuel vaporizing part 3 is made of a porous body of silica-alumina system, is such that the average diameter of a pore is 5-10mu, and the speed to suck up fuel is faster than that of ordinary glass fiber at the temperature which is under the condition where the fuel is vaporized, so that tar is hard to be accumulated in the wick. The characteristic to tar is improved by adding heat-resistant, inorganic pigment to the wick, because it makes the diameter of a pore all the more smaller. With such an arrangement, the tendency to laten a flame spreading time is inhibited, so that combustion in good condition can be assured for a wick for a long time.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lamp wick used in a liquid fuel melting device, and its purpose is to ensure that the flame always circulates quickly during ignition, and to eliminate odor during ignition and start-up.

The purpose of the present invention is to provide a lamp wick that suppresses the generation of soot, carbon oxide, etc. and can be used comfortably for a long period of time.

Liquid fuel combustion devices, which draw up liquid fuel through capillary action and vaporize the fuel from the surface of the fuel vaporizing part of the lamp wick exposed inside the combustion chamber and burn it, are widely used in oil stoves, etc. In fuel combustion devices, the fuel vaporization section is exposed to a high temperature and oxygen-containing atmosphere, so there has been a phenomenon in which tar-like substances are formed due to twisting, etc., and accumulated in the fuel vaporization section. If high-boiling point components (machine oil, light oil, salad oil, etc.) are mixed into the fuel, or if some of the fuel components have deteriorated, the generation and accumulation of the tar-like substance increases significantly.By the way, when igniting The fire rate of a fuel vaporizer is mainly determined by the heat capacity of the fuel vaporizer's nozzle.In other words, the higher the oil content in the fuel vaporizer, the larger the heat capacity, and the longer it takes for the fuel to reach the flash point after ignition. , the fire speed becomes slower.In the case of conventionally used wicks made of a mixture of glass fibers, flame-resistant fibers, starch fibers, etc., the fuel vaporization part is made thinner than the lower part to reduce the oil content and slow the fire speed. In this case, it shows very good fire performance initially, but as mentioned above, when kerosene mixed with different oils or altered kerosene is burned, the fire speed becomes even worse in a short time. It was getting late.

3.:.

The present invention eliminates these conventional drawbacks, suppresses the generation and accumulation of tar-like substances, and prevents the delay in fire-up time.Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings. do.

In the figure, 1 is the habitat, which is a silica-alumina porous material (
Silica:Alumina≠50:50 weight ratio). 2 is a wicking core made of braided cloth such as cotton or polypropylene.
It is connected to Habitat 1.

This is the upper part of the fuel vaporization section, which is exposed to the combustion chamber when installed in a liquid fuel combustion device (not shown). A heat-resistant inorganic pigment 4 is added to the fuel vaporization part 3, and a cutout part A is provided in the firing part 5 at the tip of the fuel vaporization part 3, which has a triangular shape. 6 is sewing thread, 7 is adhesive tape.

In the structure mentioned above, the fuel vaporization section 3 is provided with a notch A, and the heat capacity is small, so the fire-up time is a little slow in the initial stage of use compared to the conventional glass fiber wick. However, it heats up quickly enough that there is no problem in actual use. Therefore, in order to maintain a good fire circulation condition, the fuel f-'l is exposed to a high temperature atmosphere in the presence of oxygen in the tar vaporization section 3. In cases where different types of oils with different boiling points are included,
The case is remarkable. If tar begins to form inside the wick, the pressure in the capillary tube is strong.
Tar is pushed out to the surface and is easily decomposed and vaporized under high-temperature conditions, and the tar is ~, f'? tL7. As a way to increase the pressure inside the capillary, the furnace 4.1 vaporization section 3 is placed on the oil surface.
There are methods such as bringing the capillary closer to each other and reducing the diameter of the capillary. The kerosene wick d, which has been commonly used in the past and is mainly made of glass fiber, has an average pore diameter of approximately 40 μP degrees, and in the temperature range where fuel vaporization occurs, the kerosene suction linear velocity of this pore diameter is extremely high. Late, 1. Therefore, cool is not pushed out to the surface and accumulates inside. On the other hand, in the lamp wick in which the liquor alumina porous material of this example is used in the first fuel vaporizing section 3, the average pore diameter is 5 to 10 μm, and the temperature under the fuel vaporizing conditions is lower than that of the conventional lamp wick. The kerosene absorption speed is faster than that of glass fiber, and the tar inside is difficult to rot. Furthermore, by adding a heat-resistant inorganic pigment to the wick, the pore size becomes even smaller.
Furthermore, the tar properties are improved and good heating conditions can be maintained for a long time.

By the way, the test results are shown in the table below when using a portable oil stove with a wick diameter of 85 mm and a distance from the oil level to the fire pan of 90 mm, and using a fuel consisting of 60% diesel oil and 50% kerosene. The following three types of lamp wicks were used, and the heat-resistant inorganic pigments were Mn and Z.
A material whose main component is an oxide of n was used.

■It is a mixture of glass fiber and cotton, and the tip is thinner than the bottom (conventional product).■It is made of ceramic porous material and has a notch at the tip, giving it a triangular shape. , without heat-resistant inorganic pigment treatment (pre-inventive product) ■Those using a ceramic porous body, having a notch A in 1.1 parts of the tip, and adding heat-resistant inorganic pigment (this example) Item) As shown in the table above, the conventionally used lamp wick (No. 1), which is mainly composed of Hellas fiber, burns very quickly at first due to the thin tip part, but Tar accumulates over a short period of time, increasing the heat capacity and slowing down the fire. In addition, when using a silica-alumina porous material, the cable material has a high oil content, so even if the tip is made triangular and the oil impregnation () is reduced to a small force of 1°, the heat capacity is larger than that of a conventional glass core. Listen, the initial fire rate is a little slow. If a heat-resistant inorganic pigment is not added (Long 2), tar tends to accumulate and the fire rate slows down. However, by adding a heat-resistant inorganic pigment (%3), the generation and accumulation of tar is suppressed, and the deterioration of the cooking time is reduced. In addition,
The faster the heating time, the better, but even if it is about 20 seconds, it will not cause any problems in actual use.

As described above, since the wick of the present invention has little accumulation of tar, delay in fire-up time is suppressed and good combustion can be maintained.

[Brief explanation of the drawing]

The figure is a partial sectional view of a lamp wick in one embodiment of the present invention. 1... Inhabitation, 2... Suction core, 3...
... Combustion vaporization part, 4 ... Heat-resistant inorganic pigment,
6...Sewing thread, 7...Adhesive tape.

Claims (1)

[Claims] A lamp wick comprising a fuel vaporizing section made of a silica-alumina porous material to which a heat-resistant inorganic pigment has been added, and a notch provided in at least a part of the tip of the fuel vaporizing section.