RU126807U1 - HEATING FURNACE - Google Patents

Abstract

1. A heating furnace comprising a housing, inside which there is a combustion chamber with a loading door, a chimney in communication with the combustion chamber, and an ash chamber, and convection screens forming the first screening are fixed with a gap on the outside of the housing, at least on its side walls. circuit, characterized in that it contains additional convective screens fixed with a gap on the convective screens of the first screening circuit, forming a second screening circuit. 2. The heating furnace according to claim 1, characterized in that the convective screens of the first screening circuit are flanged to the furnace body. The heating furnace according to claim 1 or 2, characterized in that the convective screens of the second screening circuit are flanged to the furnace body. The heating furnace according to claim 1, characterized in that the upper wall of the housing is made in the form of a cooking floor.

Description

The utility model relates to devices for heating various rooms (country houses, greenhouses, garages, etc.) using solid fuel, mainly firewood.

Known furnaces for heating, having a metal casing framing the combustion chamber, called stove stoves. The walls of such furnaces are very hot and pose a risk of thermal burns when touched, which is especially critical when used in small rooms.

Known furnaces in which, in order to protect from the heated walls of the housing, as well as to increase convective heat transfer, convective screens are fixed outside the housing (Patents of the Russian Federation No. 85987 dated March 11, 2009, No. 93501 dated July 08, 2009, No. 2282790 dated 04.11 .2004, etc.).

Closest to the technical nature of the claimed is a heating device according to patent No. 93501 of 08.07.2009, IPC F24B 5/06. The device comprises a housing formed by a bottom, side, front, rear and upper walls; a chimney located in the upper part of the housing; grate; ash pan located under the grate; convective screens located outside the housing and mounted on its side, front and rear walls of the housing.

In addition, this device contains upper and lower gas guards, tubes for supplying secondary air, curved convective pipes along the side walls inside the casing, dividing the combustion space into the furnace and the upper zone. Convective pipes with their upper open ends fixed in the inclined parts of the side walls and communicate with atmospheric air, and the lower ends fixed in the openings of the bottom of the body. Convective pipes are made with straight and curved sections approaching the middle plane of the casing, forming a fire chamber and diverging in the upper part of the casing, forming the upper zone. The side walls of the casing are made flat with an inclined upper part and are connected to the upper wall, the front and rear walls of the casing are made flat. There is an ash box equipped with at least one air supply adjustment gate. The upper gas guards are an angled plate with holes along the bend line.

The device has the following common features with the claimed device: a casing inside which there is a combustion chamber with a loading door, a chimney in communication with the combustion chamber, and an ash chamber, and outside the casing, at least on the outer side walls of the casing, convective screens are fixed with a gap forming the first shielding circuit.

Convective screens protect from the heated walls of the device body, which reduces the risk of thermal injuries. However, the risk of thermal burns is not excluded, because convective screens themselves also heat up. In addition, a single circuit convective screens provide insufficient convective heat transfer (flow) from the walls of the housing.

The objective of the utility model is to increase the thermal safety of the heating furnace and increase convective heat transfer from the walls of the housing.

The problem is solved as follows. In the known device comprising a housing, inside which there is a combustion chamber with a loading door, a chimney in communication with the combustion chamber, and an ash chamber, and outside the housing, at least on its side walls, convective screens forming the first screening contour are fixed with a gap. , the following has been done: on the convective screens of the first screening circuit, additional convective screens are installed with a gap, forming the second screening circuit.

Convective screens can be installed on the side, front and rear walls of the furnace body. Convective screens of the second screening circuit can completely close the screens of the first screening circuit, or partially cover them, in the upper and middle parts, or in the upper part.

Convective screens of the second and / or first screening circuit can be made with upper edges bent to the furnace body or from the furnace body, or with upper and side edges with flanging.

The upper wall of the housing may be in the form of a hob.

Examples of a specific embodiment of a heating furnace are shown in FIGS. 1, 2. FIG. 1 shows a heating furnace with convective screens made with flanging, and FIG. 2 shows a heating furnace with convective screens made without flanging.

The heating furnace (1, 2) contains a housing 1, inside which there is a combustion chamber with a loading door 2, an ash chamber with a door 3 and a chimney 4. Convective shields 5 are fixed on the side walls outside the housing 1, and convective shields are fixed on them screens 6. The gap between the screens is 2-6 cm. Convective screens 5 and 6 can be flanged to the furnace body 1 (Fig. 1) or without flanging (Fig. 2). Convective screens 5 form the first screening contour, convective screens 6 form the second screening contour.

The heating furnace operates as follows.

The kindling of the furnace is carried out in a standard way: the kindling material is ignited in the combustion chamber, the loading door 2 is closed. Tongues of flame and gaseous products of fuel combustion heat the walls of the housing 1, from which the air is heated, rising through the air channel along the convective screens 5, heating the room. In this case, the convective screens 5 and the air rising through the air-conducting channel between the convective screens 5 and 6 are heated. The convective screens 6 are heated much less than the convective screens 5. Touching such a furnace does not cause burns. In addition, the presence of an additional air channel between the screens 5 and 6 increases convective heat transfer, which leads to an increase in the efficiency of the furnace.

The device has a simple to manufacture and reliable in operation design.

Thus, in comparison with the prototype, the proposed utility model can increase the thermal safety of the furnace, as well as increase the efficiency of the furnace by increasing convective heat transfer from the walls of the housing.

Claims (4)

1. A heating furnace comprising a housing, inside which there is a combustion chamber with a loading door, a chimney in communication with the combustion chamber, and an ash chamber, and convection screens forming the first screening are fixed with a gap outside the housing, at least on its side walls. circuit, characterized in that it contains additional convective screens, fixed with a gap on the convective screens of the first screening circuit, forming a second screening circuit. 2. The heating furnace according to claim 1, characterized in that the convective screens of the first screening circuit are flanged to the furnace body. 3. The heating furnace according to claim 1 or 2, characterized in that the convective screens of the second screening circuit are flanged to the furnace body. 4. The heating furnace according to claim 1, characterized in that the upper wall of the housing is made in the form of a cooking floor.

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