KR102065699B1 - A Disposable stove tin with convection current control plate - Google Patents

Abstract

The present invention is to insert the convection control plate 130 into the container 110 containing the solid fuel or gel fuel to increase the combustion time of the fuel and the total weight of the fuel is burned, the interior of the container 110 Insert the convection control plate 130 in the form of a V or inverted V or a simple inclined plate into the fuel, and the open fuel surface gradually decreases to control the amount of convective heat generated therein. Oxygen introduced through the inlet 112 of the container 110 along the inclined plate 132 of 130 is prevented from entering the fuel surface and extinguishing prematurely, and complete combustion is performed.

Description

Disposable stove tin with convection current control plate

The present invention installs a convection throttling plate that can control the direction and amount of convection heat inside a can container filled with solid fuel or gel fuel, and is easy to use as a heating stove that can cure concrete or increase the room temperature in a winter construction site for a long time. A disposable fuel can is provided with a convection throttle plate for use.

Every year, winter construction sites use curing fuels to maintain concrete curing temperatures. In the past, low-cost lignite was used mainly, but recently, various curing fuels (charcoal stoves, hot air fans, alcohol jelly fuels, etc.) are used to replace lignite. .

Among these, the most common lignite and charcoal stoves are the main sources of harmful gases, carbon monoxide and fine dust. As industrial accidents occur every year, the use of solid fuels or gel fuels, which can replace them, is increasing. .

However, in the case of highly stable alcohol-based fuel, there is a limit in meeting the various combustion time and calories required by the customer due to the limitation of the container standard (uniformation of the manufacturer's container standard) and the combustion time. Due to its short burning time, it is difficult to completely replace low-cost lignite or charcoal stoves that can be used for more than 10 hours.

In general, construction sites need to start curing in the evening and keep warm until the next morning, so it is urgent to develop curing fuel that can last 10 hours or more.

Alcohol-based solid fuels or gel fuels are combusted by continuously reacting the oxygen of the internal alcohol or volatile vapor with oxygen injected from the lid of the container, and the amount of oxygen required for the combustion reaction according to the lid of the container. It stays in this constant state and burns.

These solid fuels or gel fuels have a steady balance between oxygen and fuel vapor introduced through the lid of the container during combustion, and a continuous combustion reaction proceeds. At this time, as the combustion reaction progresses, the surface of the fuel descends to the bottom of the vessel, and a strong convective heat flow occupies the front of the vessel, which interrupts the input of oxygen and thus the balance between the vapor of the fuel and the oxygen is broken. Will stop the combustion of solid fuel or gel fuel.

Oxygen is injected into a certain amount by the open cross-sectional area of the lid of the container, and the amount of oxygen that is less than the vapor of the solid fuel or gel fuel is longer to extend the combustion time by arbitrarily adjusting the amount of oxygen. Doing so may cause incomplete combustion.

Therefore, commercially available solid fuels or gel fuels are limited to 17L or 18L, and 20L can be manufactured as a container, but it is not commercialized as a fuel container due to the stopping of combustion.

As described in Table 1 below, the experiment was completed to vary the lid area of the 20L square container to confirm the combustion weight, calorie value and final combustion depth of the fuel per hour. When the diameter of the hole is reduced based on the hole diameter of 186 mm, the amount of fuel burned is drastically reduced, and thus the combustion is stopped without emitting heat necessary for use. On the contrary, in order to finally burn to the bottom surface, if the size of the inlet is increased to 200 mm for the purpose of increasing oxygen input, the combustion weight per hour increases, which is not suitable for prolonging the combustion time.

Container size
(W x D x D) (mm) Initial Fuel Weight (kg) Vessel Inlet Diameter (mm) Combustion weight
(kg) Combustion depth
(mm) Burning time
(hr) Calories per hour (kcal) 20L square can
230 X 230 X 375 16.5 90 5 128 (stop burning) 16 1,381 120 7.7 186 (stop burning) 12 2,874 145 9.9 235 (Stop Burn) 9.5 4,677 164 11.3 265 (burn out) 8.5 5,902 186 14.2 326 (stop burning) 9.5 6,150 191 15.3 349 (Stop Burn) 10 6,853 195 15.6 356 (burn out) 9.5 7,374 200 16.5 375 (combustion complete) 9 8,162

* Commercially available products are 17L products with a diameter of 186mm and a depth of 320mm and a 18L product with 340mm.

Patent Document 1 discloses a combustion method and a combustion apparatus that extends the combustion life of a solid alcohol fuel, which burns the solid alcohol fuel in an adiabatic portion made of adiabatic ceramics to extend the combustion life compared to a conventional container which is not insulated. Although it can be made, but there is a problem that the practicality is poor due to the cost and manufacturing problems to apply to a large size can container for cement curing such as the present invention.

Patent Document 2 discloses a technique for having an ideal combustion time by manufacturing a diameter and height, a diagonal length, and an inlet size of a container containing a solid fuel in a predetermined ratio, but for commercially available cement curing There is a problem that it is impossible to apply to a large can container and it is difficult to change the size of the can container accordingly.

Patent document 3 includes a can body and a support member, the can body forms a receiving space for accommodating the solid fuel, and the support member is inserted into and maintained in at least a portion of the solid fuel while the cake is generated due to the combustion of the solid fuel. Separation from solid fuel enables efficient combustion of solid fuel, which may be regarded as a technique for securing a normal combustion of solid fuel rather than a technique for extending the combustion time of solid fuel.

In addition, Patent Document 4 has a partition with a hole formed in the upper surface of the case containing the solid fuel, the partition is positioned in close contact with the upper surface of the fuel in accordance with the fuel consumption, that is, the amount of fuel contained in the case, the position from the outside when burning fuel It is designed to perform a combination of wind shield and fire control to block the wind.

Japanese Laid-Open Patent Publication No. 2003-194303 (published Jul. 9, 2003) Japanese Laid-Open Patent Publication No. 2013-053770 (Mar. 21, 2013) Korean Patent Publication No. 10-2017-0140061 (published Dec. 20, 2017) Korea Registration Utility Model No. 20-0438677 (registered Feb. 20, 2008)

The present invention has been made in view of the problem of the combustion time of the solid fuel or gel fuel used for curing the concrete at the construction site or for interior finishing work or heating, the object of the present invention is to provide a solid fuel or The gel fuel can be kept in the same size as the container and the combustion time of the easy-to-use and easy-to-use fuel can be exceeded 10 hours for concrete curing or heating in the construction site without the need for fuel replacement or additional supply. A disposable fuel can can be provided.

In order to achieve the above object, the present invention is a disposable fuel can filled with various solid fuels or gel fuels based on alcohol or paraffin wax, and the lid is opened and closed at the upper inlet. A disposable fuel can is provided with a convection throttle blocking a portion of the fuel surface.

According to one embodiment of the present invention, the convection control plate is formed to have a smaller surface area of the fuel toward the bottom of the container.

According to an embodiment of the present invention, the convection control plate is inserted before or after the filling of fuel, or after opening the container of fuel to insert it to induce the flow and amount of convection heat during combustion and the direction of oxygen injection. can do.

According to one embodiment of the invention, the convection control plate is formed in an oblique direction to help the combustion of the fuel located under the convection control plate as the progress of the combustion is configured so that the convection heat is released to the outside during combustion .

According to an embodiment of the present invention, the surface of the fuel is divided into three parts in the state that the convection control plate is inserted, so that the surface area of the combusted fuel on the top of the convection control plate decreases toward the bottom of the container. It is configured to allow oxygen to be fed into the interior along the convection throttle inside the vessel.

According to an embodiment of the present invention, the convection control plate includes a structure that becomes narrower in width toward the bottom in an inverted trapezoidal structure, and is configured in an inclined plate structure or V-shaped or inverted V-shaped to divide fuel inside.

According to the embodiment, when the convection control plate is inserted, the direction and amount of convective heat generated during combustion and the direction and amount of oxygen introduced can be adjusted, and even in 20L beyond the limit of the existing 17L or 18L square products. Combustion is possible.

According to the present invention, because the combustion time is extended by more than 10 hours by inserting the convection control plate without changing the container of the concrete curing or heating fuel to be used conventionally during the concrete curing or finishing work in the winter construction site By the next morning, the operator will be able to minimize the operator's additional work and to burn fuel stably and continuously without additional fuel supply.

1 is a perspective view of a disposable fuel can according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view illustrating a state in which fuel in a fuel can is burned in FIG. 1;
3 is a cross-sectional view showing a state of the end of combustion in FIG.
4 is a cross-sectional view showing a convection heat and oxygen input state in a fuel can without a convection control plate;
5 is a perspective view of a disposable fuel can according to another embodiment of the present invention;
6 is a perspective view of a disposable fuel can according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments that do not limit the present invention will be described in detail.

1 illustrates a disposable fuel can with a convection control plate according to an embodiment of the present invention, and FIGS. 2 and 3 show the state of the middle combustion stage and the end stage of combustion in the fuel can illustrated in FIG. 1, respectively. It is a cross section.

As shown in the figure, the fuel can 100 according to the present embodiment has a cube-shaped container 110 having a square cross-sectional shape in plan view, and an inlet 112 formed on the upper surface of the container 110. Cover lid 120 and the convection control plate 130 provided in the interior of the container 110, the interior space of the container 110 is filled with alcohol-based solid fuel or gel fuel.

In this embodiment, the container 110, the lid 120 and the solid fuel or gel fuel is the same as the conventional disposable fuel can, so description thereof will be omitted, and the shape and function of the convection control plate 130 below This will be described.

According to the present embodiment, the convection control plate 130 may be made of a non-combustible material, for example, a metal plate, which is the same material as that of the container 110, and is immersed in fuel filled in the inside of the container 110. As the height of the fuel changes as the fuel is burned at, the convection heat emitted from the surface of the fuel by the combustion of oxygen and the fuel from the outside is allowed to enter and exit without being disturbed.

That is, when the fuel F is lowered as shown in FIG. 4 when the fuel is combusted in the conventional fuel can, the convective heat R emitted from the surface of the fuel in the space of the fuel can 11 is rotated. As the solid arrow formed is stagnated at the middle part of the fuel can, it acts as a kind of barrier to block the oxygen (O; downward downward solid line) from being supplied to the surface of the fuel. Although there was a phenomenon of extinguishing, the fuel can according to the present embodiment is a container by the convection control plate 130 even if the fuel level is lowered as the fuel F is burned, as shown in FIGS. 2 and 3. (110) By preventing convection heat (R) formed in the inner space from forming a layer, oxygen (O) can be introduced into the surface of the fuel from the outside of the container 110, so that extinguishing is performed early. Without the container 110 is there.Aye to be completely burned up in the bottom part of the fuel.

In the figure, code Q is radiant heat emitted to the outside.

In the present embodiment, the convection control plate 130 is generally formed in a V-shape to divide the fuel surface inside the container 110 into an intermediate region and an outer region three times, and the surface area of the intermediate region decreases toward the lower side and the outer region. The surface area of the area is intended to be large.

As a result, in the initial stage of combustion, convection heat is not generated in the vessel and combustion heat (radiant heat) is released to the outside, and oxygen (O) flows into the vessel 110 from the outside and comes into contact with the surface of the fuel (F), thereby ensuring stable combustion. When the surface height of the fuel is lowered by the passage of the combustion time, that is, when the level of the fuel is lowered, an empty space is generated inside the container 110 as shown in FIG. 2. In the convection heat (R) to form a layer while turning, but the convection heat (R), which occurs mainly in the middle region by the convection control plate 130 does not occupy the entire interior space of the container 110, empty gap Through the outside oxygen (O) is introduced through it to reach the surface of the fuel (F) is made a stable combustion, at this time, the surface area of the fuel (F) that the combustion is made in a V shape As the convection control plate 130 is made smaller downward, the generation amount of convective heat (R) gradually decreases, so that the fuel F located at the bottom of the container 110 may be burned as shown in FIG. 3. Until the inflow of oxygen (O) is stable until it is possible to prevent the phenomenon that was turned off during the combustion.

In the figure, reference numeral 132 denotes an inclined plate of the convection control plate 130, reference numeral 134 denotes a bottom plate, and reference numeral 132a denotes a concave portion of the inclined plate 132.

In the present embodiment, the convection control plate 130 is not limited to the right and left width and the vertical length of the inclined plate 132 as shown in the drawings, while reducing the generation of convection heat toward the inside of the container 110 downwards. Oxygen introduced from the outside can be produced in a variety of specifications according to the width and height of the container so as to flow smoothly.

According to the present embodiment, as the combustion of the fuel F proceeds, the surface area of the fuel F is gradually reduced by the convection control plate 130 to appropriately reduce the amount of convective heat R generated therein. Oxygen (O) introduced through the inlet 112 of the upper surface of the container 110 along the inclined plate 132 of the convection control plate 130 is effectively introduced into the fuel surface to prevent premature extinguishing and complete combustion. Will be.

On the other hand, in the present embodiment, the convection control plate 130 has a concave curved surface in the longitudinal length direction of the lower surface portion of the inclined plate 132 to help the combustion of the lower portion of the convection control plate 130 during the combustion of solid fuel or gel fuel. Also through the recessed portion 132a, the inflow of oxygen O and the radiant heat Q can be released to the outside.

In addition, according to the present embodiment, the convection control plate 130 helps to completely burn to the bottom of the fuel F, as well as increase the combustion time of the fuel F, which is the lower the fuel F By reducing the surface area of), the combustion time can be extended by gradually reducing the amount of combustion.

Convection control plate 130 according to this embodiment forms a V-shape to help the combustion of the fuel (F) located in the lower portion of the convection control plate 130 as the progress of the combustion convection heat (R) during combustion Rather than staying inside the container 110, the container 110 is discharged to the outside through the inlet 112 of the upper surface of the container 110.

On the other hand, in order to minimize the effect of powder agglomeration through incomplete combustion during combustion of fuel, when a small amount of fuel is filled and burned in a clean container that has not been combusted, the powder agglomerates are not formed. The combustion is stopped due to fuel remaining on the bottom surface, which is the limit of the balance between the generated convective heat and the injected oxygen, which is the main cause of the combustion stop. It will be able to proceed.

When the convection control plate 130 is inserted into the container 110 as in the present embodiment, since the direction and area of the convection heat generated during combustion and the direction of oxygen to be injected are adjusted, Beyond the limit, it was found that combustion was possible even in a 20L container.

5 shows a fuel can 100 having a convection control plate 130 according to another embodiment of the present invention, and FIG. 6 is a fuel provided with a convection control plate 130 according to another embodiment of the present invention. Can 100 is shown in the present invention, in the present invention, the convection control plate 130 is introduced into the container 110 in the form of a simple straight slope plate 132 as shown in Figure 5, or shown in Figure 6 As described above, the inclined plate 132 on both sides may be manufactured in an inverted V shape, and the surface area of the fuel burned by the convection control plate 130 in the process of burning the fuel inside the container 110 may also be manufactured. By gradually reducing the amount of convective heat generated, the combustion time can be extended by gradually reducing the amount of heat of combustion.

Table 2 below shows the results of the combustion test of the conventional two types of fuel cans and fuel cans according to Examples 1 and 3 of the present invention. The average calorific value per hour was decreased, and the conventional fuel cans 1 and 2 were not completely burned, but the combustion was stopped, but in the embodiment of the present invention, it was confirmed that complete combustion was made. .

division Conventional fuel cans 1 Conventional Fuel Cans 2 Example 1 Example 3 Tare size (mm)
(W x D x D) 230 X 230 X 375mm Vessel Inlet Diameter (mm) 186 structure none Two steel plates 18 mm wide and 428 mm long and 20 mm wide Insert one bottom plate 40mm wide and 250mm high Height 235 mm, Bottom width 180 mm Iron plate width 180 mm Triangle insert

interior

Gel fuel filling weight (kg): a 16 16 16 16 Weight after combustion (kg): b 2.9 1.6 0 0 Combustion amount (kg): a-b 13.1 14.4 16 16 Burning time (hr) 9hr 10hr 11hr 40min 12hr 10min Average calories per hour (kcal) 6,530 6,480 6,000 5,760 result Stop combustion
(17L conformity: commercialization) Stop combustion
(18L conformity: commercialization) Complete combustion
(20L conformity: uncommercialization) Complete combustion
(20L conformity: uncommercialization) Bottom view after combustion

100: fuel can
110: container
112: entrance
120: lid
130: convection throttle
132: inclined plate
132a: concave
134: bottom plate
F: fuel
R: convective heat
O: oxygen
Q: radiant heat

Claims (6)

Disposable fuel cans filled with solid fuel or gel fuel inside the container and open / closed at the top of the container.
The fuel can is disturbed by convection heat emitted from the surface of the fuel by combustion of oxygen and fuel supplied from the outside as the height of the fuel is changed as the fuel is burned while being submerged in the fuel filled in the container. Convection throttle plate is provided to block a portion of fuel surface so that the fuel can enter and exit. The convective throttle plate has a V-shaped structure that divides the fuel surface inside the vessel into three sections. This gradually decreases, the disposable fuel can with a convection throttle, characterized in that the surface area of the fuel in the outer region gradually increases.
delete delete The method according to claim 1,
The convection throttle plate may be inserted in the packaging of the solid fuel or gel fuel, the disposable fuel can with a convection throttle plate, characterized in that can be inserted when opened and used after packaging.
The method according to claim 1,
The convection throttle plate is a disposable fuel can with a convection throttle plate, characterized in that it is curved in the longitudinal direction to help the combustion of the lower portion of the convection throttle plate during the combustion of solid fuel or gel fuel. delete

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