Long-burning heating stove

Abstract

This utility model relates to thermal power engineering, specifically to furnace heating systems based on solid fuel furnaces. The furnace's firebox is divided into two parts by a partition. The partition consists of two plates, and its height is equal to 2 / 3 of the firebox height. A gap is located between the plates, forming a vertical channel along the depth of the firebox for supplying air to the upper zone of the firebox from the ashpit. The lower part of the housing contains a ashpit, above which grates are located. The firebox outlet is connected to an exhaust pipe. The technical result is a simplified design and increased fuel combustion duration with a single load. 1 reference Item, 2 Illustrated Items.

Description

[0001] Technical field

[0002] The utility model relates to heat power engineering, namely to furnace heating systems based on solid fuel furnaces.

[0003] Technology Level

[0004] The problem with most traditional stoves is rapid fuel combustion. To increase combustion time, methods of restricting the air supply are commonly used, which leads to the wood smoldering, incomplete heat release, and reduced heating efficiency.

[0005] A known stove (Patent RU 176209, published January 12, 2018) consists of a metal body, ash pan, grate, and firebox. A horizontal partition creates a circular passageway between the stove body and the heater with a heat-accumulating load. The flue pipe communicates with its entrance through an opening in the upper part of the stove body and a window for cleaning the flue pipes.

[0006] The disadvantage of the known solution is the bulkiness of the design, since the presence of additional channels and a heater increases the dimensions of the stove compared to similar ones without heat-accumulating elements, which limits its use in small spaces.

[0007] In addition, there is a risk of overheating of the elements due to the concentration of hot gases in the channel passage, which can lead to local overheating of the metal, especially during intensive work.

[0008] A long-burning heating stove (Patent RU 2541968 dated January 19, 2015) is known. A loading door is located at the top of the body, and an ash door at the bottom. Two vertical air ducts are connected by a transverse air duct, which has an air intake opening at the top, protruding beyond the stove body. The upper ends of the vertical air ducts are sealed, and the lower ends enter the transverse air duct. Air is supplied to the combustion chamber through the inlet duct and movable windows in the two vertical air ducts - directly onto the upper surface of the fuel. Flue gases are discharged through the upper and lower chimney pipes, and the ratio of hot and cooled gases is regulated by a damper in the upper pipe (depending on the required temperature). Power is stabilized by a thermostat, the operation of which is based on temperature changes in the body dimensions.

[0009] The existing design ensures layered combustion of fuel from top to bottom, but has the following drawbacks: it is technologically complex and labor-intensive to manufacture, and significant chemical underburning occurs across the entire power generation range, reducing efficiency. Furthermore, this design has a limited ignition method: ignition is only possible during the initial loading; subsequent fuel loads ignite.

[0010] The essence of the utility model

[0011] The technical problem that the utility model is aimed at solving is the creation of a long-burning heating furnace of a simplified design that ensures the staged sequential combustion of fuel within a single volume of the combustion chamber while maintaining the flow of air into the combustion zone.

[0012] This problem is solved by achieving the technical result of the claimed utility model, which consists in increasing the duration of combustion with one load, as well as in stabilizing the combustion process by supplying air to the upper zone of the combustion chamber.

[0013] The technical result is achieved in that in a long-burning heating furnace containing a housing, at the bottom of which there is a ash pit, above which there is a firebox with a grate at its base, what is new is that the firebox is divided by a partition into two parts that communicate with each other in the upper part of the firebox, wherein the partition consists of two parallel metal plates that form a vertical channel that runs along the depth of the firebox, and the height of the partition is 2 / 3 of the height of the firebox, and each part of the firebox is equipped with a grate.

[0014] The body can be made of metal, heat-resistant steel.

[0015] The utility model is illustrated by drawings

[0016] Fig. 1 shows a general view of the heating stove, in Fig. 2 the arrows show the direction of the hot air flows.

[0017] The furnace consists of a metal body 1 with a firebox 2, which is divided by a partition 3 into two parts. The height of the partition is 2 / 3 of the height of the firebox 2. The height of the partition 3 was selected empirically and ensures an optimal ratio between the optimal volume of combustion zones and free space for gas circulation in the upper part of the firebox. Partition 3 consists of two parallel plates welded to the bottom and rear walls of the firebox 2. The plates form a vertical channel 10-15 mm wide along the depth of the firebox 2 for supplying air to the upper zone of the firebox from the ash pit 4, above which the grate 5 is located. The outlet of the firebox is connected to the exhaust pipe 6.

[0018] Device operation

[0019] The firewood is arranged in a U-shape in the firebox. Ignition occurs in one section of the firebox. Once combustion begins, the flame gradually spreads through the upper zone into the other section of the firebox. A vertical duct supplies air from the ash pit to the upper section of the firebox for afterburning.

[0020] Thus, the long-burning heating stove provides the following advantages:

[0021] - increasing the duration of combustion of one fuel batch, due to the division of the volume of the combustion chamber, the amount of fuel that is simultaneously in the stage of intensive combustion is reduced,

[0022] - stabilization of the combustion process and afterburning of volatile combustion products due to

[0023] supplying air through a vertical channel to the upper part of the combustion chamber.

[0024] Thus, the combination of essential features makes it possible to achieve the technical result claimed by this utility model.

Claims

1. A long-burning heating furnace comprising a housing with a ash pit at the bottom, above which is a firebox with a grate at its base, characterized in that the firebox is divided by a partition into two parts that communicate with each other at the top of the firebox, wherein the partition consists of two parallel metal plates that form a vertical channel running along the depth of the firebox, wherein the height of the partition is 2 / 3 of the height of the firebox, and each part of the firebox is equipped with a grate.

2. A long-burning heating stove according to paragraph 1, characterized in that the body is made of metal from heat-resistant steel.

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