JPS60207A - Wick for petroleum burning appliance - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lamp wick for oil-burning appliances, and uses a thin ceramic fiber plate hardened with a flexible binder in the combustion part of the wick to prevent the formation of tar-like substances due to bad fuel. The objective was to improve the characteristics.

Light wicks for oil burners such as kerosene stoves have two burning parts made of woven fabric mainly made of glass fiber, and a lower suction part made of woven fabric made mainly of cotton or cotton fiber. Most of them are. The biggest problem with appliances that use such wicks is that a tar-like substance is generated on the wick, causing the wick to become damaged.
Lower operation becomes impossible or combustion deteriorates (no longer burns)
The most common cause of this is thought to be that the fuel is oxidized and turns into tar (altered). Other possible causes include, for example, if white kerosene is used as a regular fuel, foreign parts such as salad oil or light oil may be mixed in with it, or variations in the boiling point of the fuel itself may occur. In any case, it is clear that bad fuel is one of the causes of tar formation.

Next, when we carefully examine the process of tar production, we find that a wick that is resistant to bad kerosene is one that has a low temperature that allows it to remain extremely soft even when tar-like substances are produced. In order to achieve this, it has become clear that the amount of oil contained in the combustion part of the wick must be increased. In other words, the large amount of oil contained in the combustion part of the wick lowers the temperature of the wick, and the tar produced is soft and small in amount, and the tar dissolves in the abundant kerosene and spreads below the wick. There is a tendency for tar to not be concentrated in one place, resulting in a longer service life.

Even in the case of current lamp wicks that have a combustion section made mainly of glass fiber, one way to increase the oil content in the combustion section is to minimize the distance from the oil surface to the combustion section, or in other words, the suction height of the wick. Although it is possible to obtain considerable effects by Reducing the distance to the terminal increases the risk of fire, etc.

one! Since the glass fibers themselves are relatively thick, measuring 6 to 9 microns, their oil content is low no matter how they are woven or made into non-woven fabrics. This led to the idea that ceramic fibers could be used in thinner fibers. Alumina (Al2O2)
Ceramic fibers containing almost half and half of silica (S 102 ) have a melting point of 1300° C. and are extremely heat resistant, so there is no need to worry about melting even if the fibers are quite thin, 2 to 3 μm in diameter. However, it is difficult to use it as thread because it cannot be made into long fibers and is somewhat brittle, and it is currently difficult to use it as a woven fabric for lamp wicks. As a result of investigating a method similar to that used to produce Japanese paper and hardening it with an inder, it became clear that a lamp wick with very good performance could be obtained.

However, in constructing a lamp wick using ceramic fibers, there were the following problems.

(1) Ceramic fiber hardened with an inorganic binder is brittle, making it difficult to sew or form into a cylinder, making it difficult to mass-produce, and lacking in dimensional accuracy.

(2) When ceramic fibers hardened with an inorganic binder are installed in the combustion section to form a wick, it is difficult to connect them to the suction section, and there is a risk of uneven wicking from the suction section to the combustion section. As a result, the ``abundant oil content'' characteristic of ceramics is lost, and there is a possibility that combustion deterioration due to tar may occur.

(3) Even if ceramic fibers hardened with either an inorganic binder or an organic binder are used, the strength is weaker than that of a conventional woven fabric sewn.

(4) The thicker the ceramic fiber plate, the greater the variation in thickness, making it difficult to achieve dimensional accuracy. (
For example, if the burning part of the wick is made of a material with a thickness of 3 mm,
The thickness variation is ±1mm, and the actual core thickness is 2cm to 4cm.
When the thickness becomes thinner, a gap is created between the wick and the wick outer cylinder, and the combustion part and tank are connected by this gap.
This may lead to backfire to the tank, combustion changes due to changes in the oil level in the tank, and in the worst case, an explosion. Moreover, if the thickness increases, the bottom part of the core -j1 becomes heavy, and in the worst case, it becomes impossible to operate the core up and down.

(6) If the combustion part of the wick is made of a single thin ceramic fiber plate, it will take a long time to ignite, turn around, and raise the wick temperature because it contains a lot of oil. As a result, the ignition time and crater time become longer, and the time in the casing for ignition and stable combustion becomes longer, and during this time a large amount of unused gas (Co
, H.C.

etc.) occurs.

(6) As stated in item 5, ceramics make fire circulation worse. However, as a countermeasure to this, we use glass instead of fire wicks.
It is conceivable to construct it with a woven fabric with low oil content, such as cotton or soap, but if the combustion section is constructed by attaching a thin fire wick to either side of the flat plate of ceramic fiber, the ignition will occur between the top and bottom of the wick. Since the wick is highly flexible, the wick outer tube also gets caught in the wick guide tube, easily damaging the wick itself and deteriorating the fire running characteristics.

The present invention eliminates the drawbacks mentioned above, and one embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, 1 is a thin plate 1 of ceramic fiber hardened with a flexible binder.

2 is a fire core material mainly made of glass fiber (or woven fabric), which is used to speed up the fire speed during ignition. 3 is formed.

4 In the upper part of Vi9, the k side is made of a blended yarn of cotton and cotton, and the lower part to be immersed in the fuel is made of a knitted fabric made of polypropylene fiber, which is a chemically synthesized fiber with lipophilic and hydrophobic properties.

The combustion part 3 and the suction part 4 are joined by sewing with their end faces abutting and held by a stainless steel cylindrical supporter 5 via a tape 6 coated with adhesive on the outer surface, and the tape 6 is held by the supporter 6. It is held firmly in place by cut-up claws 7. In Fig. 2, 8 and 9 are the wick guide tubes, 1
0 is the combustion cylinder.

The feature of this embodiment lies in the configuration of the combustion section 3, and focusing on this point, the configuration and effects will be described below.

(1) By stacking a plurality of thin plates 1 made of ceramic fibers hardened with a flexible binder, a highly flexible combustion section can be constructed.

Comparing the flexibility, (bending angle that causes cracking) 4.Three thickness board made of ceramic fiber hardened with an inorganic binder → 20' (B) 'Three thickness board made of ceramic fiber hardened with a Cl binder. → 60° (q 3 plates made of ceramic fiber hardened with a flexible binder and sewn together with a thickness of 1 inch (this example product) → 900 or more) Double-layered special flexible binder When the combustor 3 is constructed by stacking a plurality of thin plates 1 made of ceramic fibers, it can be easily constructed into a cylinder, and it can also be sewn together, improving mass production and creating a low-cost, low-loss lamp wick. It enables the production of

In addition, the wicking part 4 and the combustion part 3 can be sewn and joined in the same way as conventional wicks, which reduces the wicking properties of the wick and stabilizes the durability of ceramic fibers against bad kerosene. Figure 3 shows the combustion deterioration of defective kerosene in which o, i% of sarada oil was mixed into the kerosene, and compared to the conventional product (A line), this example product (R) It can be seen that the deterioration time is long.

(The tensile strength is improved by constructing the combustion section 3 by stacking a plurality of thin plates 1 made of ceramic fibers hardened with a 21F3T flexible binder.Comparing the tensile strengths, (8) A plate made of ceramic fibers hardened with an inorganic binder. Thickness of 3mm → 2~s Kg/mt (B) E]'Thickness of 3mm thick made by hardening ceramic fiber with flexible binder → 4~7kg/m♂(C) OJ'With flexible binder Three 1mm-thick plates made of hardened ceramic and fiberglass are sewn together (this example product) → 10 Kp /
To provide a stable lamp wick with improved strength of mn+ or higher.

(3) By stacking a plurality of thin plates 1 to form the combustion section, variations in the thickness of ceramics can be reduced.

That is, the thinner the thin plate 1 made of ceramic fiber is, the smaller the variation in plate thickness is. It has become extremely flexible, and the thickness can be adjusted by controlling the strength during suture.

This makes it possible to create lamp wicks with less variation.
The wick can be moved up and down smoothly, and the wick can be manufactured safely without dimensional variations that could lead to backfire into the tank.

(4) Thin fire core material 2 can be sewn between a plurality of thin plates 1, ignition and lighting time can be shortened, and stable combustion can be started immediately.

Therefore, generation of unburned gas components (CO, HC, soot, etc.) can be reduced.

Furthermore, by sewing together the fire core material 2, the strength of the combustion part 3 can be further improved.

7) As described above, according to the present invention, it is possible to provide a lamp wick for an oil-burning appliance that has excellent heat resistance, poor combustion resistance, and material properties.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a lamp wick for an oil-burning appliance according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing the lamp wick installed in an oil-burning appliance, and FIG. This is a graph showing. 1... thin plate, 2... fire core material, 3...
...burning part, 4 ... ... ψ deficiency" 2 parts. Name of agent: Patent attorney Masao Nakao and 1 other person 2nd
Figure 3

Claims (3)

[Claims] (1) A lamp wick for an oil-burning appliance characterized by using a thin ceramic fiber plate hardened with a flexible binder in the combustion part of the wick. (2) The lamp wick for an oil-burning appliance according to claim 1, characterized in that the ceramic fiber thin plate is laminated with a thin woven fabric made of threads mainly made of heat-resistant fibers such as glass. (3) The oil-burning appliance according to claim 1, characterized in that the tip of a thin woven fabric made of threads mainly made of heat-resistant fibers such as glass is made to protrude from the tip of the thin ceramic fiber plate. Light wick.