RU216016U1 - Sauna stove powered by a blast gas burner - Google Patents

Abstract

The claimed utility model relates to heat engineering, namely to household sauna stoves, and is intended for heating a room and generating steam. A sauna stove operating on a blast gas burner includes a casing with convection holes, containers filled with heat storage material, formed by the walls of the furnace and casing, legs, a fuel channel passing into the furnace, which has an increase in height in the direction of flue gases, smoke channels. The furnace additionally includes a gas collector rack with a gas collector installed in the upper part of the furnace, in the upper part of the gas collector there is a chimney branch pipe, the smoke channels are made in the form of metal pipes with branches for connection with the furnace and the gas collector, where two branches of metal pipes are connected vertically to the upper part of the furnace , and two outlets of metal pipes are connected horizontally to the upper opposite side walls of the furnace. At the same time, serpentine metal pipes are connected to the outlets, connected respectively to the front and side parts of the gas collector, while the smoke channels together with the casing form a container filled with heat storage material. The technical result of the claimed furnace is to increase the efficiency of the bath furnace in the form of energy efficiency of heat transfer of combustible fuel.

Description

Application area

The utility model relates to heat engineering, namely to household sauna stoves and is intended for heating a room and generating steam.

State of the art

Currently, more and more sauna stoves are being developed with the desire to efficiently use the thermal energy obtained during the combustion of fuel, including increasing the time to maintain the temperature of the furnace with less fuel consumption, while obtaining additional useful properties, such as: control of convective flows, reduced the risks of fire danger, the ease of installation of chimneys when using blast gas equipment is much more difficult. However, for various reasons, the known technical solutions do not allow meeting the requirements to the maximum extent.

Below is a number of patented technical solutions-analogues, which are household sauna stoves.

Known technical solution disclosed in the patent RU 46561 U1 (IPC F24B 5/00; F24C 13/00; published: 2005.07.20) "Bath stove", which is a bath stove containing a body with a furnace in which burners of a gas burner are installed , and a branch pipe for the removal of gaseous products of combustion of fuel, a heater, a water heater heat exchanger inserted into the cavity of the furnace, and gas ducts in the form of labyrinths, the inlets of which communicate with the cavity of the furnace, and the outlets - with a branch pipe for the removal of gaseous products of combustion of fuel, characterized in that the heater installed so that its bottom is deepened into the cavity of the furnace, and gas ducts are adjacent to the side walls, formed by means of guide partitions-cut-offs installed on the inside of the side walls of the body, on the outside of which there are additional heat transfer elements, made, for example, in the form of ribs .

The disadvantage of this technical solution is the mandatory use of atmospheric gas burners, which require natural draft, under the action of which the movement of flue gases is carried out. Natural draft is created due to the difference in densities of the outside atmospheric air and gases in the chimney that removes combustion products. At the stove, the heater is surrounded by gas ducts on the sides, and the heating of the middle zone of the heater is not efficient enough, this is manifested by the lack of well-thought-out gas ducts. Also, the stove has an open design of the heater, which does not allow changing convective air flows, heats and dries the air as the stove heats up.

Also known is the technical solution disclosed in the patent RU 125312 U1 (IPK F24B 9/00; published: 2013.02.27) "Bath furnace with a gas blast burner", which is a bath furnace with a gas blast burner, containing a housing, a firebox, a container for heat storage material placed above the firebox, recessed into the firebox and having a common wall with it, a chimney, characterized in that it contains a reverse system of channels for flue gases, consisting of front, separated from each other, vertical channels formed by the front wall of the tank for heat storage material and the front wall of the housing, the rear vertical channels separated from each other, formed by the rear wall of the tank for heat storage material and the rear wall of the casing, and connecting the vertical channels and located in the volume of the tank for heat storage material, at least one horizontal channel for one turnover of flue gases , and revolutions, at least at least two.

The disadvantages of this technical solution are smoke channels with a large cross-sectional area, the number of which is limited by the technical capabilities of the furnace, the number of revolutions of the smoke channels is also limited by technical capabilities, to increase the number of which requires a significant increase in the dimensions of the furnace, and, accordingly, a significant increase in the volume of the heater and furnace power. Smoke channels affect the heating area of the heat storage material, so the heat transfer efficiency is reduced and limited by the design features of the furnace. The absence of a container for loading heat storage material on the sides of the furnace, which effectively heats the room and reduces the temperature of the metal walls of the furnace. The absence of a removable cover of the heater to adjust the intensity of convection air flows and save energy from the combustible fuel in heat storage materials. Uncontrolled convection currents of heated air intensively increase the temperature in the room, which can have a negative impact on health. Also, the chimney is made horizontally and directed towards the furnace with the burner installed, it is assumed that the further construction of the chimney should pass through the wall into the room with the burner installed, thus, the design of the furnace involves the installation of at least one obligatory horizontal passage element in the wall. The bottom of the furnace does not have additional protection against heating of the furnace installation site and requires special attention to the fire safety requirements of the room.

The objective of the utility model is to create a sauna stove with improved consumer properties, including efficiency and heat transfer efficiency of combustible fuel, reduced fire hazard and reduced health risks.

The technical result of the utility model is to increase the efficiency of the bath furnace in the form of energy efficiency of the heat transfer of the combustible fuel.

The claimed technical result is achieved by the fact that the sauna stove operating on a blast gas burner, including a casing with convection holes, containers filled with heat storage material formed by the walls of the furnace and casing, legs, a fuel channel passing into the furnace, a furnace having an increase in height in the direction of travel flue gases, at least 2 smoke channels in the form of metal pipes connected horizontally in the upper part of the furnace, at least 2 smoke channels in the form of metal pipes connected vertically in the upper part of the furnace; characterized in that the smoke channels in the form of metal pipes have a serpentine structure and together with the casing form a container filled with heat storage material, the smoke channels in the form of metal pipes are connected to a gas collector installed on the gas collector rack, in the upper part of the gas collector there is a chimney branch pipe, a gas collector rack attached to the top of the firebox. In this case, the casing is assembled from at least three parts. In this case, the casing may not have a rigid connection with the furnace. The oven has a removable lid. In this case, the fuel channel has a flange for mounting a gas burner.

Description of the claimed utility model

The utility model is an open-type sauna stove and is illustrated by the drawings shown in FIG. 1-4.

The casing 1 of the furnace is made of sheet metal 1.5 mm thick, and is located on legs 3 made of sheet metal 2 mm thick. The casing 1 does not have a mandatory rigid fixation to the furnace 5 and the fuel channel 4. There are convection holes in the lower part of the casing 1. The walls and bottom of the fuel channel 4 and the furnace 5 are made of a single sheet of metal 2 mm thick. The upper part of the fuel channel 4 and the furnace 5 are made of a single sheet of metal 2 mm thick. The furnace 5 has an ascending structure in the direction of the flue gases. In the upper part of the furnace 5, at least 2 smoke channels 8 are connected to the gas ducts 6, made in the form of branches of metal pipes 1.5 mm thick horizontally and at least 2 similar smoke channels vertically. At least 4 smoke channels 7 are connected to the smoke channels 8, made in the form of branches of metal pipes, made in the form of straight metal pipes 1.5 mm thick, while the location of the smoke channels 7 is horizontal. At least 8 smoke channels 8 are connected to the smoke channels 7, and at least 4 smoke channels 7 are connected to them, having a horizontal arrangement. The smoke channels 7 are connected to the gas collector 9, made of sheet metal 2 mm thick, with the help of at least 6 smoke channels 8. At the same time, at least 2 smoke channels 8 are connected to the gas collector 9 from the front side horizontally and at least 2 smoke channels 8 are attached to the sides of the gas collector 9 horizontally. The gas collector stand 10, made of 2 mm thick sheet metal, is attached vertically to the top of the furnace 5, and the gas collector 9 is attached to the gas collector stand 10 in its upper part. The chimney pipe 12, made of 2 mm thick sheet metal, is connected at the top of the gas collector 9 concentrically with the flue gas outlet.

Casing 1 is assembled from 3 parts at the places where casing 2 is attached, made in the form of bent edges of metal with holes with a diameter of 4 mm for fasteners. A removable cover of the heater can be attached to the attachment points of the casing 2.

The removable heater cover consists of the upper part of the heater cover 14, made of sheet metal 1.5 mm thick, attached to the left wall of the heater cover 16, made of sheet metal 1.5 mm thick, and the right wall of the heater cover 17, made of sheet metal 1.5 mm. The back wall of the heater cover 16 is attached to the top, left and right walls of the heater cover with M4 screws or rivets. An additional insert 18, made of sheet metal 1.5 mm thick, is attached to the rear wall of the heater cover 16. The top cover of the heater has a hinged cover 19 for access to the stones. The back wall of the stove cover is additionally fixed on the stove casing 1 with the help of brackets 20.

A flange 13 is attached to the front of the fuel channel 4 for attaching a gas burner. Any known gas burner can be attached to the gas burner flange.

A container with heat storage material (hereinafter referred to as the heater), formed by the walls of the furnace 5, the casing 1, as well as the smoke channels 8 and 7, has a large heating area of the heat storage material, to a greater extent due to the use of compact smoke channels made of metal pipes passing through a significant part of the stone.

The oven works as follows. A blast (pressure) gas burner is attached to flange 13 for attaching a gas burner. The gas burner modulates a horizontally directed flame into the furnace 5. Flue gas draft is forced by the burner. At the first stage of combustion, flue gases rush into the upper part of the furnace 5, while the walls and top of the furnace heat the heat storage material located on the outside. Then the flue gases through the flue holes 6 enter the smoke channels 8 and 7, while the smoke channels, heated from the flue gases, heat the heat storage material. Then the flue gases go to the gas collector 9, which combines them and directs them to the chimney branch pipe 12 for further smoke removal through the chimney.

Smoke channels 7 and 8 carry out efficient heating of the heater, as they have a compact shape and a serpentine structure that passes through the heater in the direction from the rear side of the stove to the front and back at least 4 times. This is achieved through the use of metal pipes in the construction of smoke channels. Metal pipes make it possible to design flue ducts with more complex turns and more compact compared to typical methods of manufacturing smoke ducts from sheet metal.

A heat exchanger or a tank for heating water of any known design can be installed on the chimney pipe.

At any time, you can install or remove a removable cover of the heater on the casing 1, which has additional effective functions, namely: increasing the temperature of the heat-storing material, maintaining the energy of the heat-storing material for a longer time, reducing air convection, blocking the free exit of steam for its additional overheating. To adjust the convection on the removable cover of the heater there is a hinged cover 19, when opened, the air convection increases, and when closed, it decreases. When water is poured onto the heated heat-storing material with a removable heater cover installed on the stove, the generated steam meets a partial barrier in the direction of travel, rushes down and exits through the convection and technical holes in the lower part of the stove casing 1.

Due to the fact that the casing 1 does not have a rigid fixation to the furnace 5, any additional known thermal insulation material can be laid between them in order to provide additional fire safety, if there are risks associated with the fire hazard of the room.

Thus, the claimed utility model has improved consumer properties, providing effective heating of stones, allows you to adjust the temperature and humidity parameters of the bath, change the modes of conservation and transfer of energy from the heat-accumulating material to the air of the room, while additionally protecting the skin and respiratory organs from dry heated air . The utility model allows the use of additional thermal insulation materials to reduce the risks associated with fire hazard and has industrial applicability.

Fig. 1. View of the furnace in a section from the side.

Fig. 2. View of the furnace from above.

Fig. 3. General view of the stove without the removable cover of the stove.

Fig. 4. General view of the stove with a removable heater cover.

Fig. 5. Top view of the removable cover of the heater.

Fig. 6. Side view of the removable cover of the heater.

Claims (8)

1. Stove for a bath, operating on a blast gas burner, including a casing with convection holes, containers filled with heat storage material formed by the walls of the furnace and casing, legs, a fuel channel that passes into the furnace, which has an increase in height in the direction of flue gases, smoke channels , characterized in that it additionally includes a gas collector rack with a gas collector installed in the upper part of the furnace, in the upper part of the gas collector there is a chimney branch pipe, the smoke channels are made in the form of metal pipes with outlets for connection with the furnace and the gas collector, where two outlets of metal pipes are connected to of the upper part of the furnace vertically, and two outlets of metal pipes are connected to the upper opposite side walls of the furnace horizontally, while serpentine metal pipes are connected to the outlets, connected respectively to the front and side parts of the gas collector, while the smoke channels together with the casing form a container filled with a heat accumulator rubbing material. 2. The furnace for a bath, working on a blast gas burner, according to claim 1, characterized in that the casing is assembled from at least three parts. 3. The furnace for a bath, operating on a blast gas burner, according to claim 1, characterized in that the smoke channels in the form of metal pipes pass inside a container with heat-storing material. 4. Furnace for a bath, working on a blast gas burner, according to paragraphs. 1 and 2, characterized in that the casing is not rigidly fixed to the furnace. 5. The furnace for a bath, operating on a blast gas burner, according to claim 1, characterized in that it has a removable cover for regulating convective flows. 6. Furnace for a bath, working on a blast gas burner, according to paragraphs. 1 and 5, characterized in that it has a removable cover with the possibility of installation or removal on the installed stove with a chimney. 7. The furnace for a bath, working on a blast gas burner, according to claim 1, characterized in that the fuel channel has a flange for attaching a gas burner. 8. Furnace for a bath, working on a blast gas burner, according to paragraphs. 1 and 2, characterized in that the casing is made of metal.

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