RU186611U1 - BATH FURNACE - Google Patents

Abstract

The utility model relates to the field of heat engineering, namely to domestic bath stoves, and is intended for heating the room and receiving steam, used mainly in individual baths. Sauna furnace contains a firebox, an ash pan, a grate, at least one chamber with heat storage loading, a convector cover, an exhaust manifold, a flame-flow divider, and an opening for installing a chimney. The divider is a perforated metal plate mounted at an angle of less than 90 ° to the heat transfer surface. The total cross-section of the divider openings is equal to or greater than the chimney cross-section. Convection openings on the convector casing are made below the level of the chamber for heat storage loading.

Description

The utility model relates to the field of heat engineering, namely to domestic bath stoves, and is intended for heating the room and receiving steam, used mainly in individual baths.

Known furnace for a bath according to the patent of the Russian Federation No. 2352865 "Furnace for a bath (options)" IPC F24B 9/00 publ. 04/20/2009, according to the first embodiment, the furnace contains a firebox, an ash pan, a grate, a convection hood. In the upper part of the furnace there are two chambers for heat storage loading, between the vertical walls of which, facing the center of the furnace, a cavity of the exhaust manifold is formed with an outlet pipe and side walls with windows for the passage of flue gases, and from the bottom two inclined plates forming its bottom with a gap in the middle, inclined guide walls are installed in the cavity, the side walls of the chambers for heat storage loading in its upper part and the upper wall of the exhaust manifold are bent at an angle to the mountains zontali and rest on a side wall of the furnace body, limiting on top flue areas, on which installed the entire width fireproof.

The closest analogue to the prototype of the claimed furnace is a furnace for a bath according to the second embodiment of RF patent No. 2352865 "A furnace for a bath (options)" IPC F24B 9/00 publ. 04/20/2009, containing, a furnace, an ash pan, a grate, a convector cover, two chambers for heat storage loading are installed in the upper part of the furnace, each of which has a trapezoid shape in cross section and a parallelogram in longitudinal section and between the inclined walls of which are facing to the center of the furnace, a cavity of the exhaust manifold is formed, bounded by the upper wall, with an outlet pipe installed in it and a slot in the lower part of the collector, while a divider is installed in the cavity of the exhaust manifold, moreover, and for the heat storage load, they are installed so in the furnace body that they form gaps with all its walls, while on the side walls of the tanks for the heat storage load, cut-offs are installed perpendicular to them over the entire width of the gas duct space, which are closely adjacent to the side walls of the furnace body, forming gas ducts holes, from above along the side walls of the furnace, the gas duct space is closed by a plate inclined to the center of the furnace, which mates with the frame bounding the furnace.

The disadvantage of this furnace in both cases is the creation of complex labyrinths for the products of fuel combustion, the increase in their passage time in the furnace, by installing cut-offs and partitions, the surfaces of which heat up during the initial period of the furnace’s operation and cannot subsequently collect heat from hot flue gases. The contact area of cutters and partitions with heat transfer surfaces is not significant, and in some cases even absent, which leads to inefficient heat removal., The presence of plates and cutters increases the metal consumption of the furnace. In the prototype, hot gas flow flows along heat transfer surfaces, while the maximum temperature of the gas flow is at its center. (Khoshev Yu.M. Summer baths and stoves. Design principles.-M: Book and business, p. 298)

The objective of the claimed utility model is to provide improved heat transfer between the combustion products of the fuel and heat-removing surfaces and to increase the efficiency of the furnace as a whole.

The technical result is achieved due to the fact that the bath furnace containing a furnace, an ash pan, a grate, at least one chamber with a heat storage load, a convection hood, an exhaust manifold, a gas-flame flow divider and a pipe for installing a chimney, according to the utility model , the divider, which is at least one perforated metal plate, is installed at an angle of less than 90 ° to the heat transfer surface.

The specified result is also achieved by the fact that the total cross section of the holes of the divider is equal to or greater than the cross section of the chimney.

The indicated result is also achieved by the fact that convection openings on the casing are made below the level of the chamber for heat storage loading.

The analysis of the prior art made it possible to establish that analogues that are characterized by a combination of features identical to all the features of the claimed technical solution are absent, which indicates the compliance of the claimed technical solution with the condition of patentability "novelty".

The perforated divider allows you to split the flame flow into many streams that are evenly distributed along the entire length of the heat transfer surface. The main advantage of the claimed utility model in comparison with the prototype is that the gas-flame flow is deployed so that it interacts on the heat transfer surface orthogonally or close to it, which contributes to more efficient heating of the heat transfer surface.

The location of the convection openings on the convector casing below the level of the chamber for heat storage loading contributes to the accumulation of hot air around the chamber with heat storage loading, prevents cooling of its side walls, and thereby improves heating of the heat storage load.

The essence of the utility model is illustrated by drawings.

In FIG. 1 shows a general view of the furnace.

In FIG. 2 is a vertical section through a furnace.

In FIG. 3 shows a horizontal section of the furnace

The bath furnace contains a firebox 1, an ash pan 2, a grate 3, in the example of a specific embodiment of the furnace, two chambers with a heat storage charge are provided: a closed chamber 4 and an open chamber 5. In the exhaust manifold 6, the side walls 7 are also the side walls of the heat storage charge chamber 5. The side walls 7 act as a heat transfer surface. On the bottom of the exhaust manifold 6, a gas-flame flow divider 8 is installed, which is a perforated metal plate installed at an angle less than 90 ° to the side wall 7. The holes on the divider 8 are made over the entire length of the heat transfer surface 7. The number and size of holes is selected experimentally and depends on furnace power and outlet pipe diameter. However, the total cross section of the openings of the divider must be equal to or greater than the cross section of the chimney. In the specific embodiment of the furnace, two dividers 8 are installed, on each side of the chamber 5 with a heat storage load to increase the heat removal area. In the bottom of the collector there is a hole with a pipe 9 for installing a chimney. The casing-convector 10 is made with convection openings 11, which are below the level of the chamber 5 for heat storage load.

The operation of the furnace is as follows.

In the furnace 1, fuel is placed on the grate 3, mainly firewood, and set fire to it. The draft adjustment to ensure normal combustion of the fuel is carried out by the necessary opening of the ash pan 2, which provides air to the fuel into the combustion chamber 1 through the grate 3 from the ash pan 2, necessary for burning air and optimize the combustion process. Hot air and gases formed from the combustion of fuel rise up the firebox 1, reaching the dividers 8, rush into the gas ducts and are divided into many streams. Thus, a high-temperature core of the flame flow is used for heating. The gas transfer streams are washed along the entire length of the heat transfer wall 7 of the chamber 5 for heat storage loading. After that, the cooled flue gases through the hole with the pipe 9 of the manifold 6 exit into the chimney.

The combination of the above features provided by the design of the furnace for the bath, provides a higher temperature heat storage load, fuel economy, which allows us to conclude that the efficiency of the furnace.

Claims (3)

1. Sauna furnace containing a firebox, an ash pan, a grate, at least one chamber with a heat storage load, a convection hood, an exhaust manifold, a flame-flow divider and a chimney installation hole, characterized in that the divider is at least one perforated a metal plate mounted at an angle of less than 90 ° to the heat transfer surface. 2. Sauna stove according to claim 1, characterized in that the total cross section of the holes of the divider is equal to or greater than the cross section of the chimney. 3. Sauna furnace according to claim 1, characterized in that the convection openings on the convector cover are made below the level of the chamber for heat storage loading.

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