JP3080230U - Liquid fuel burner - Google Patents

Abstract

(57) [Summary] (Corrected) [PROBLEMS] To provide a burner provided with a fuel chamber containing a liquid-absorbing and refractory material capable of completely absorbing liquid fuel without spilling. The fuel comprises a flammable first liquid and a non-flammable second liquid. With this configuration, the risk of soot generation and explosion during combustion is significantly reduced.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 SUMMARY OF THE INVENTION The present invention relates to a burner comprising a container defining a fuel chamber for containing fuel and having an opening therethrough for defining a combustion surface through the fuel chamber.

[0002]

[Prior art]

 Such burners using fuel paste as fuel are known from the prior art. Such a burner is simply a tin can, the top of which is provided with an opening having a cross section slightly smaller than the cross section of the can. The can is closed with a lid. When the lid is opened, the fuel paste can be put into the can through the opening. The fuel paste can be ignited by a bare flame such as a lighter or match, and when ignited, a flame extends about 10 cm above the can from the opening in the can. By extinguishing the flame with a lid, etc., the burner can be “extinguished”.

When the fuel paste in a can is used up, the can is usually discarded.

[0004]

[Problems to be solved by the invention]

 When the burner is used, the heat generated inside the can is transmitted through the side and bottom of the can, and the can becomes hot, which may leave a burn mark on the surface on which the can is placed. Also, for the burner users, handling the burning burner is dangerous because the cans become hot. The user may get burned when putting on the lid to put out the flame.

[0005] If the can is placed improperly with the lid open, the paste may leak from the opening and contaminate the environment. For example, even if the can is slightly tilted to the side, the gel-like paste spills out of the opening. This is not preferable from the viewpoint of safety.

[0006] Furthermore, when fuel paste is used for a burner, the fuel paste is supplied packed in each can, and when the fuel paste is used up, the entire can must be replaced with a new one. Get on. Disposal of empty cans as well as the problem of high costs must be avoided for environmental reasons.

[0007]

[Means for Solving the Problems]

 Therefore, an object of the present invention is to provide a burner of the kind described above, in which the fuel does not spill out of the container opening even if the container is improperly placed, and can be supplemented when the fuel is used up. To make a burner. The fuel used must be such that it does not soot during combustion and does not explode when refilled through the burner opening during combustion.

The present invention solves the above problem by disposing a liquid-absorbing and refractory material in a fuel chamber of a burner. The fuel used is a liquid, and is composed of a flammable first liquid and a nonflammable second liquid mixed with the first liquid.

The liquid-absorbing and refractory material absorbs all of the fuel in the combustion chamber, so that even if the container is turned upside down, no fuel will spill out of the opening in the container.

[0010] Another advantage of the burner of the present invention is that no heat is generated below the fuel surface in the fuel chamber. In the case of liquid fuels, the liquid insulates the container while the volatile components burn. For this reason, excessive heat generation on the support surface is particularly prevented. In addition, the user can touch a wide area of the container wall for a long time without getting burned. Since liquid fuel is obtained by adding nonflammable liquid to flammable liquid, soot generation during combustion and danger of explosion are greatly reduced. Also, according to the present invention, the risk of refueling the burner during combustion is relatively low.

[0011] Another advantage of the burner of the present invention is that it covers the liquid-absorbing refractory material with the liquid-permeable refractory material to keep it away from the container opening. The liquid-absorbing refractory material in the fuel chamber can generally fray rather than being a dense structure due to its required properties. By covering this material with a liquid permeable refractory material, the burning surface can be cleaned.

With regard to liquid fuels, it has surprisingly been found that the addition of non-combustible liquids to flammable liquids not only significantly reduces soot formation but also explosion risk. Here, it is more advantageous that the amount of nonflammable liquid is smaller than the amount of flammable liquid.

It has been found to be advantageous if the volume content of the first liquid is between 52% and 85% and the volume content of the second liquid is between 15% and 48%.

It has also been found to be advantageous if the first flammable liquid is ethanol and the second non-flammable liquid is water. Ethanol is already one of the most commonly used liquid fuels in the form of methylated spirit, not only for heating or heating, but also for cooking food for parties and camps, and therefore Inexpensive and easily available. Water is also a very cheap liquid and is readily available everywhere.

When the burner is used for cooking, it has proven advantageous if the volume content of ethanol is between 75% and 85% and the volume content of water is between 15% and 25%. Several tests have shown that compositions with the following mixing ratios are advantageous: volumetric content of ethanol 65% to 75%, volumetric content of water 25% to 35%; volumetric content of ethanol 52% to 60%, water volume content 30% to 48%, and sodium chloride volume content 5% to 18%. Preferably, the sodium chloride component is dissolved in water. The inclusion of sodium chloride completely eliminates the danger of explosion, so fuel can be replenished while the burner is in use. It is also advantageous if the flammable first liquid has been modified to contain 1% of methyl ethyl ketone (MEK).

A fuel of 1 × 10 ⁻³ m ³ with a volumetric content of 79% of denatured ethanol (containing 1% of MEK) and a volumetric content of water of 21% gives a burning time of 20 hours. The water may be ordinary tap water.

A fuel of 1 × 10 ⁻³ m ³ with a volume content of 70% of denatured ethanol (containing 1% of MEK) and a volume content of 30% of water can obtain a combustion time of about 18 hours.

Another advantage of the burner according to the invention is that the burner according to the invention may have an adjusting element for adjusting the opening size of the container opening. By adjusting the height of the flame using this element, the heat and light generated by the flame may be adjusted, and the amount of fuel used may be adjusted. Considering ease of use, in this case, the adjusting element is a sliding element, which is guided at the height of the container opening inside the container wall and which is used to continuously adjust the opening dimension of the container opening. Adjustment is advantageous.

In another advantageous embodiment, a lid part, which may be used, for example, for placing utensils, warming devices, etc., may be removably attached to the container of the burner according to the invention.

[0020]

[Embodiment of the invention]

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

FIG. 1 and FIG. 2 schematically show a sectional view and a plan view of the burner 1, respectively. The burner 1 has a container 3 with a container wall 3.1 and a container bottom 3.2. In this embodiment, since the cross section of the container 1 is circular, there is only one wall 3.1 of the container. In other embodiments, the container 3 may have any other desired cross section.

The surface of the container 3 facing the container bottom 3.2 is partially closed by a bayonet 3.3. The plug 3.3 defines, at its center, a container opening 3.5 having a vertical edge 3.4. The insert 3.3 is mounted on the upper edge 3.6 of the container wall 3.1. The plug-in part 3.3 has a first horizontal surface 3.7 between the container wall 3.1 and the vertical edge 3.4 and a vertical edge 3.3 immediately adjacent thereto. By having an inclined surface 3.8 extending towards 4, a so-called "overflow channel" is formed.

The container 3 contains a liquid-absorbing and fire-resistant, in particular a non-woven, preferably ceramic material 5. In other embodiments, any type of material that is liquid absorbing and fire resistant may be used.

Under the insert 3.3 and the container opening 3.5, the liquid-absorbing and fire-resistant material 5 is covered with a material 7 that is liquid-permeable and fire-resistant and has a dense structure. It is. The liquid permeable and refractory material 7 is any flexible material having the above-mentioned properties, and in this embodiment is preferably a woven fabric. This liquid-permeable and refractory material 7 can be liquid-permeable in one direction only and liquid-impermeable in the other direction. In this case, the liquid permeability is exhibited in the direction from the outside to the inside with respect to the container 3, and the direction from the inside to the outside is liquid-impermeable. However, in the liquid impermeable direction, the material 7 must be gas permeable.

The liquid-absorbing and refractory material 5 completely fills the combustion chamber 9 surrounded by the container 3. This makes it possible to absorb an optimal amount of liquid fuel. In other embodiments where less fuel must be used for a combustion chamber of the same size, the material 5 may correspondingly occupy less in the fuel chamber 9.

The fuel chamber 9 contains liquid fuel. Liquid fuel may be injected and refilled into the combustion chamber 9 through the liquid permeable coating material 7 via the container opening 3.5.

[0027] Liquid fuels generate flammable volatile components. When this component is heated (e.g. by igniting with an open flame), it burns upward through the cladding material 7 and the container opening 3.5, and the container wall 3.1 and the fuel wall below the fuel surface in the fuel chamber 9 Container bottom 3. Cool 2 When refilling the liquid fuel via the container opening 3.5, the plug-in 3. The overflow channel formed by 3 receives fuel that accidentally slipped off the container opening 3.5 during refilling. In order to transport the container safely without damaging the upper functional part, the surface of the container 3 facing the container bottom 3.2 may be covered with a lid (not shown).

The plug 3.3 may have, for example, on its vertical edge 3.4, a fastening element (not shown) for mounting the lid part 11 or a lid (not shown), For example, an element such as a screw, a slot and a notch for plug connection, in which a complementary fixing member is disposed in the mounting portion, can be considered.

In another embodiment, for example, the lid part 11 is connected to the container wall 3.1 or the insert part 3. 3 is also conceivable. The lid portion 11 in FIGS. 3 and 4 has a cylindrical housing 11.1 provided for the purpose of heating, for example, outwardly from the container opening 3.5, and the housing has a heat insulating property. Of the material 11.2. In this embodiment, braided steel is used as the heat insulating material 11.2. The heat-retaining material 11.2 is a hollow portion 11.1 extending from the container opening 3.5 for supplying oxygen. 3 The hollow section 11.3 of this embodiment has a conical shape and tapers upward. A plate 11.4 with a handle 11.5 is provided as a top cover.

On the burner side of the lid part 11 a fixing element (not shown) may be provided which cooperates with a complementary fixing element of the container 3.

When the lid part 11 is gripped by the handle 11.5 and fixed to the container 3 containing the fuel 7, the flame slightly extends into the hollow part 11.3 and warms the heat insulating material. Warm, warm materials release the accumulated heat to the surroundings.

On the container opening 3.5, a lid part having another function may be attached in the above-described manner so as to hold an object such as a cooking utensil.

The container 3 is preferably made of a steel plate. On its side there is provided a slide element (not shown) mounted on the container wall 3.1, which slide element can be moved substantially parallel to the same plane as the container opening 3.5. The size of the container opening may be continuously adjustable from a maximum position to a fully closed position. The slide element is preferably arranged in the opening of the container wall 3.1 and may have an opening, for example of a size corresponding to the opening dimension of the container opening 3.5, and Beyond the perimeter, it may be extendable on two opposite faces of the container 3. The extent of the extension depends on the movement of the slide element such that the slide opening partially or completely overlaps with the container opening 3.5 (open position) or partially or completely contracts from said overlap position (open position). (Closed position).

In summary, the present invention provides a burner that can be used easily and safely, is inexpensive, and can be used in various ways for cooking and warming at camps and parties.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a burner.

FIG. 2 is a schematic plan view of a burner.

FIG. 3 is a schematic view of a burner having a lid portion.

FIG. 4 is a schematic plan view of a lid portion of FIG.

Claims (18)

[Utility model registration claims] 1. A burner comprising a container defining a fuel chamber for containing fuel and having an opening communicating with the fuel chamber and defining a combustion surface. Provided in (9),
Further, the burner is characterized in that the fuel comprises a flammable first liquid and a nonflammable second liquid mixed with the first liquid. 2. The liquid-absorbent material (5) has a surface facing the opening (3.5) covered with a liquid-permeable and fire-resistant material (7). Claim 1
The burner described in. 3. The liquid absorbing and refractory material (5).
The burner according to claim 1 or 2, wherein is a non-woven fabric. 4. The burner according to claim 3, wherein the nonwoven fabric is made of ceramic. 5. The liquid permeable and refractory material (7) comprises:
5. A woven fabric having a dense structure.
The burner described in. 6. The burner according to claim 1, wherein the proportion of the second liquid is smaller than the proportion of the first liquid. 7. The volume content of the first liquid is from 52% to 8%.
5%, and the volume content of the second liquid is from 15% to 48%.
%. 8. The burner according to claim 1, wherein the first liquid is ethanol and the second liquid is water. 9. The volume content of ethanol is from 75% to 8%.
9. Burner according to claim 8, characterized in that it is 5% and the volume content of water is between 15% and 25%. 10. The burner according to claim 8, wherein the volume content of ethanol is 65% to 75% and the volume content of water is 25% to 35%. 11. The volume content of ethanol is between 52% and 60%, the volume content of water is between 30% and 48%, and also contains 5% to 18% by volume of sodium chloride. 9. The burner according to claim 8, wherein: 12. The burner according to claim 8, wherein sodium chloride is dissolved in water. 13. The burner according to claim 1, wherein the first liquid is denatured. 14. The burner according to claim 1, wherein the fuel contains 1% of methyl ethyl ketone. 15. Burner according to claim 1, characterized in that it is fixed to the container (3) and has a lid part extending above the container opening (3.5). 16. The burner according to claim 15, wherein the lid part is detachably fixed to the container (3). 17. The burner according to claim 1, further comprising an adjusting element for adjusting an opening dimension of the container opening (3.5). 18. The adjusting element is a sliding element which is guided parallel to the plane of the container opening (3.5) and in the container wall (3.1), said sliding element being used for opening the container opening. 18. Burner according to claim 17, characterized in that the size of the part (3.5) can be adjusted continuously.