SLOW-BURNING LOG

Abstract

The invention relates to warming, heating devices for warming and cooking, and it can be utilized in household, in the field, in camping and in any touristic events as a source of stand-alone flame for warming, cooking, as well as for illumination. A slow-burning log that is made of a solid-fuel material of a vegetable origin has upper, lower and side surfaces, at least two vertical through incisions that extend from the upper surface to the lower one and intersect with each other thereby forming a general through vertical hole that begins in a midsection of the upper surface. The vertical through incisions are made as partially inner incisions, and beginning from the upper surface they do not extend to the side surface of the log, while in the lower section of the log they extend to the side surface thereby forming side entrances for air delivery on the side surface. The vertical through incisions are made in a shape of trapezoid or rectangular grading into the trapezoid or a rectangular grading into another rectangular or in any other shape or in the form of any figure. The side entrances are made with dimensions calculated with consideration of air volume that is delivered therethrough and required to maintain uniform stable burning process. The slow-burning log comprises an ignition agent arranged at least in the general vertical through hole. The slow-burning log may be made with a removable support for a reservoir for cooking. The slow-burning log is made with a handle. Technical effect lies in increase of the burning time, provision of uniform long-term burning, provision of uniform cooling of the log body along the entire perimeter of the vertical through incisions while also providing uniform delivery of air from the bottom to the vertical through incisions along the entire perimeter thereof in order to provide stability of the burning temperature and uniform gradual burning of the log, allowing adjustment of the burning process providing slowing down thereof, increase of fabricability, reduction of labor intensity of production.

Claims

1. A slow-burning log made of a solid-fuel material of a vegetable origin, the log having upper, lower and side surfaces, at least two vertical through incisions that extend from the upper surface to the lower one and intersect with each other thereby forming a general through vertical hole that begins in a midsection of the upper surface, characterized in that the vertical through incisions are made as partially inner incisions, and beginning from the upper surface they do not extend to the side surface of the log, while in the lower section of the log they extend to the side surface thereby forming side entrances for air delivery on the side surface.

2. The slow-burning log according to claim 1, characterized in that the vertical through incisions are made in a shape of trapezoid or rectangular grading into the trapezoid or a rectangular grading into another rectangular or in any other shape or in the form of any figure.

3. The slow-burning log according to claim 1, characterized in that the side entrances are made with dimensions calculated with consideration of air volume that is delivered therethrough and required to maintain uniform stable burning process.

4. The slow-burning log according to claim 1, characterized in that it comprises an ignition agent arranged at least in the general vertical through hole.

5. The slow-burning log according to claim 1, characterized in that it is made with a removable support for a reservoir for cooking.

6. The slow-burning log according to claim 1, characterized in that it is made with a handle.

Description

[0029] The essence of the claimed technical solution will be explained below referring to the illustrative material, which presents: FIG. 1an overall view of the slow-burning log with the embodiment of the vertical through holes in the shape of trapezoid;

[0030] FIG. 2an overall view of the slow-burning log with the embodiment of the vertical through holes in the complex shape;

[0031] FIG. 3a top view of the slow-burning log;

[0032] FIG. 4a bottom view of the slow-burning log;

[0033] FIGS. 5, 6, 7, 8examples of embodiments of the slow-burning log: FIG. 5a top view, FIG. 6a bottom view, FIG. 7a side view, FIG. 8a fragment of the overall bottom view.

[0034] The proposed slow-burning log comprises: upper surface 1; side surface 2; lower surface 3; vertical through incisions 4, which are partially, preferably in the upper and middle section of the log, made internal, i.e. such that they do not extend to the side surface of the log beginning from the upper surface, while they are made opened in the lower section of the log, extend to the side surface forming side entrances 5 for air delivery on the side surface 2. The side entrances 5 represent a portion of the vertical through incisions, continuation thereof and at the same time they represent ventilation holes or gaps 5 depending on the way they are made relative to the lower surface: holes in case of making them without intersection with the lower surface, and gaps in case of coupling with the lower surface. Dimensions of the side entrances are calculated with consideration of the air volume required to maintain uniform stable burning process that is caused by a number and dimensions of the vertical through incisions, overall dimensions of the log in general.

[0035] The vertical through incisions 4, when intersecting, form a general through vertical hole 6. The vertical through incisions 4, if there are two of them made, intersect in the midsection of the log, preferably at right angle. If the log has a regular round shape, the central longitudinal axis of the general through hole 6 may coincide with the central longitudinal axis of the log. When the log is made with three or more vertical through incisions 4, they are distributed uniformly, while intersecting approximately at equal angles. In this case the side entrances are distributed along perimeter of the side surface in the lower section of the log.

[0036] The claimed device may comprise the vertical through incisions 4 having various shape and dimensions depending on the shape and dimensions of the upper surface, side surface and lower surface, as well as on prospective operating conditions.

[0037] The claimed slow-burning log may be made with a handle for convenient use.

[0038] Furthermore, the slow-burning log may comprise an ignition agent mounted in the general vertical through hole and/or walls of the vertical through incisions may be soaked with a highly flammable substance for rapid ignition.

[0039] The proposed slow-burning log is used preferably in any touristic events and in campings, as well as in fireplaces as a source of stand-alone fire for warming, cooking or as a source for illumination in the following way.

[0040] The slow-burning log is arranged with its lower surface 3 on another surface. The ignition agent arranged in the general through hole or a wick of this agent extending therefrom is scorched. Afterwards, gradual uniform slow inflammation of the slow-burning log occurs.

[0041] Air that cools the walls of the vertical through incisions 4 and allows maintaining stable slowed down burning process is delivered to the vertical through incisions 4 through the side entrances 5, which are uniformly arranged along the perimeter of the side surface 2 in the lower section of the log. In this case, it is provided that air is sufficiently supplied through the side entrances 5 along the uniformly distributed ventilation passages to the burning zone to maintain stable fire, the passages not changing the dimension thereof up to almost complete combustion of the log, in contrast to other known devices, that provides stability, increased burning duration of the claimed device. By sealing the side entrances 5 with supplementary means, the air delivery volume to the burning zone and thus the burning intensity, light and heat output of the slow-burning log is adjusted, if necessary, e.g., at strong wind.

[0042] After scorching the slow-burning log, it is possible to arrange the reservoir suitable for cooking and/or warming water on the upper surface 1. In case when the vertical through incisions 4 on the upper surface are completely sealed due to high dimension of the reservoir for cooking, it is necessary to use a support for arranging the reservoir at a distance from the upper surface 1 in order to prevent fire from fading out.

[0043] Preferably, the slow-burning log is made from timber. Various wood species are used, preferably, birch.

[0044] It has been experimentally established that making the vertical through incisions, according to the claimed structural solution being proposed, leads to increase of the burning time of the device, since such structure allows uniform distribution of air that is delivered through the side entrances to the vertical through incisions along the inner walls of the vertical through incisions while cooling them in order to slow down the burning process and simultaneously maintaining the burning process providing stability thereof, as well as cause long-term preservance of integrity of the device in view of causing slowed down and gradual combustion of the inner walls of the vertical through incisions.

[0045] Upon comparison of the proposed technical solution with the analogues known from the prior art, it is concluded that the slow-burning log meets the criterium of inventive step, since it is presented with qualitative structural changes of making the vertical through incisions thereby producing the ventilation system of air supply to the burning zone that provides achievement of said technical effect being not established in the existing prior art earlier.

[0046] Structures of the slow-burning log having the claimed set of essential features have not been revealed from existing sources of patent and scientific and technical information, thus, the presented technical solution meets the criterium of novelty.

[0047] Also according to the results of experimental practice examination, the proposed technical solution is suitable for use, since it does not contain any materials, which could not be reproduced at the actual science and engineering development stage, therefore, the present technical solution is considered to be compliant with the criterium of industrial applicability.