RU104674U1 - BATH FURNACE - Google Patents

Abstract

 1. Sauna furnace, comprising a casing enclosed by a casing repeating in cross-section the shape of the casing, a combustion chamber with a chimney, a pipe for removing gaseous products of fuel combustion, a heater, a pre-heating remote tunnel, and a removable water tank, a water heater heat exchanger, characterized in that the furnace is formed by the walls of parts of different thicknesses, creating inclined surfaces; the plate under the grate is made in the entire length of the furnace; there is a frame around the grate that prevents the complete removal of solid fuel combustion products from the grate plate; removable panels are used in the casing design; the system for fixing the casing on the body of the product consists of corner inserts having stiffeners fixed on the body of the product, lower fasteners of removable panels of the casing, additionally fixing the corner inserts and creating a frame of rigidity in the lower part of the casing; the upper decorative frame that creates the frame of rigidity in the upper part of the casing is removable for ease of removal / installation of casing panels; a heat exchanger with two threaded nozzles located respectively in the upper and lower parts, is made in the form of a box rigidly mounted on one of the walls of the product body; the heater and the top of the furnace, made in the form of a prism with a section of a trapezoid, form a system of self-cleaning chimneys; the bottom of the furnace has the shape of a prism with a section of a trapezoid; chimney windows at the top of the furnace are triangular; on the top of the furnace there are pads; the cutter is located above the furnace and is made in the form of a channel; a decorative overlay on the frame of the pre-heating tunnel covering the mounting gaps is made with

Description

The utility model relates to household appliances, namely to heating devices intended for heating rooms of small baths with the simultaneous production of hot water and steam.

Known technical solution according to patent RU No. 2062956 C1, publ. 06/27/1996, in which the sauna furnace contains a fenced-in combustion chamber with a chimney, a cavity for heat storage elements located above the vault of the combustion chamber, as well as a removable water tank and heat exchange element. The disadvantage is the complex and yet not sufficiently reliable design of the connection of the water tank with the combustion chamber. The location of the tank in the upper part of the furnace creates inconvenience in operation. A disadvantage of the known furnace is also low efficiency (from 15 to 40%) and, as a result, significant fuel overruns. In addition, the efficiency of the known furnaces is affected by the lack of heat exchange between the burning fuel and the heat storage load of the heater.

Known technical solution according to patent RU No. 221909 C2, publ. 12/10/2004, according to which the sauna stove is made in the form of a volumetric metal structure containing a firebox with a chimney, a stove, and a water heater operating both on wood and other, in particular, gaseous, fuels. A well-known sauna furnace contains a housing with a furnace, in which burners of a gas burner device are installed, and a pipe for removing gaseous products of fuel combustion, a heater, a water heater heat exchanger introduced into the furnace cavity, and gas ducts made in the form of labyrinths, the inlets of which communicate with the furnace cavity, and outputs - with a pipe for the removal of gaseous products of combustion of fuel. A disadvantage of the known furnace is that the design does not allow for a high intensity of heat transfer between the burning fuel and the heat storage load of the heater. In addition, it is complex, low-tech, and the location of the water tank on the roof of the furnace can lead to overheating of the water in the tank before the room and the heat-accumulating load of the heater heat up to the required temperatures.

Known technical solution according to patent RU No. 45508 U1, publ. 05/10/2005, in which the furnace for the bath contains a enclosed furnace chamber with a chimney, a cavity for heat storage loading, located above the arch of the furnace chamber, as well as a removable water tank and heat exchange element, characterized in that it is additionally equipped with a secondary afterburner located in the cavity for heat storage loading in front of the chimney, a flue gas cut-off screen is mounted inside the afterburner, mounted on the rear wall of the chamber with a gap between its edges and the side walls of the chambers a flue, on the outside of which, on the roof of the combustion chamber, heat transfer fins are installed, the door of the combustion chamber is enclosed by a protruding casing with a flange, and the water tank with its side wall is adjacent to the casing of the rear wall of the combustion chamber, with which it is connected through a heat exchange element made, for example , in the form of a boiler. The disadvantage is the inadequate safety of operation: in case of burning the bottom of the furnace, the ash box only partially prevents the burning particles from falling onto the floor of the room. In addition, the heat exchanger reduces the useful volume of the furnace, which leads to low efficiency, and the disadvantage is the inability to increase the volume of heated water through the use of additional tanks.

Closest to the claimed solution is a technical solution according to patent RU No. 46561 U1, publ. 07/10/2005, in which the sauna stove contains a housing with a furnace and a pipe for removing gaseous products of fuel combustion, a heater, a water heater heat exchanger introduced into the furnace cavity, and gas ducts in the form of labyrinths, the entrances of which communicate with the furnace cavity and the exits from a nozzle for the removal of gaseous products of fuel combustion, the heater is installed so that its bottom is buried in the cavity of the furnace, equipped with a grate, ash box and entrance door, and the ducts adjacent to the flue guides are adjacent to the side walls c-stripper installed on the inside of the side walls of the housing, on the outer side of which set of heat transfer elements formed, for example, in the form of ribs. The disadvantage of the design of the prototype is that the design is one-piece, and this requires the use of material with a thickness determined by the power of the equipment, and also increases the assembly time. The prototype has rectangular chimneys on the side of the furnace, which impairs traction. In addition, the ash box only partially covers the bottom, which increases the risk of fire.

The task to which the claimed utility model is directed is to improve the design of the sauna stove. The task to which the claimed utility model is directed is to create a simple, economical to manufacture and operate, convenient and safe to use furnace for a small bath, which provides heating of the bath room while receiving hot water and steam.

The technical result of the claimed utility model is to increase the productivity, efficiency, as well as the efficiency of the bath furnace by increasing the heat exchange between the burning fuel and the heat storage load of the heater, increasing its heat transfer, and increasing the safety of operation.

To achieve a technical result, the following furnace design is proposed (Fig. 1). An octagonal firebox consists of several assembly units (1, 9, 10), to increase the rigidity of the structure and the formation of inclined surfaces, which allows to achieve the effect of flowing around the fire surfaces of the firebox and, as a result, to increase the service life of the product, with lower metal consumption without compromising operational characteristics and simplification of assembly technology. The plate (2) under the grate is made in the entire length of the furnace to increase the fire safety of the product. The frame (3) around the grate prevents the complete removal of solid fuel combustion products from the grate plate (2), which, in turn, contributes to the formation of a protective ash layer on it, which is additional protection against burning and increases the service life of the product. The use of removable panels (4) in the casing design allows to achieve model versatility, in options for installing a hinged tank (23) on models without a heat exchanger (left, right, rear left, and right), which allows a future user to independently choose the configuration he needs, in accordance with personal needs. If necessary, in the modification of the product for the heat exchanger (7), removable casing panels allow the use of hinged and remote tanks at the same time. To maintain rigidity in the presence of removable panels (4), the original design of both the casing itself and its fixation on the product body is intended. Consists of: corner inserts (5) having three or more stiffeners, securely fixed to the product body; lower fastenings (24) of removable casing panels, simultaneously additionally fixing corner inserts and creating a stiffening frame in the lower part of the casing; upper decorative frame (6) creating a frame of rigidity in the upper part of the casing. This design allows you to keep the casing stiffness, even when removing all panels. The upper decorative frame (6) is removable for ease of removal / installation of casing panels if necessary (tank installation, furnace maintenance). The removable upper frame increases the manufacturability of product repair in case of mechanical damage; greatly simplifies the process of replacing the product at the end of its life. The heat exchanger (7) with two threaded pipes located respectively in the upper and lower parts is made in the form of a box rigidly fixed to one (or several) of the walls of the product body.

Kamenka (8) and the top of the furnace (10), made in the form of a trapezoid, form a system of self-cleaning chimneys, where due to rolling unburned fuel particles along the inclined surface of the top of the furnace and spilling them into special slotted gaps between the top of the furnace and the side walls, they burn out . Lighter particles burn out in the upper tapering part of the chimney. The bottom of the furnace (9) of a trapezoidal shape, provides the rolling of combustion products to the ash box (20). The chimney windows at the top of the furnace (10) are made of a triangular shape, which, coupled with the use of trimmed material for the manufacture of lining-amplifiers (11), increased the manufacturability of the manufacturing process. Pads (11) on the top of the furnace are designed to strengthen the place of the most likely occurrence of burnout and increase the operational life of the product. The cutter (12) in the shape of a channel, in addition to the main function of changing the direction of movement of smoke gases, provides additional protection against burning and increases the manufacturability of the product assembly. The pre-heating tunnel (13), made as a whole with the furnace of the product, increases the useful working volume of the furnace. In addition, the use of sufficiently thick-walled metal in the manufacture of the pre-heating tunnel and lining it with an additional layer of steel, for example, frame (14), increases the rigidity of the structure, which allows the product to be embedded in brickwork without the use of additional supporting elements (corners, channels, etc. ) The tightness of the assembly of the pre-heating tunnel (13) significantly increases the fire safety of the product. The decorative overlay (15) on the pre-heating tunnel frame, covering the mounting gaps remaining after embedding the product in the brickwork, is removable to facilitate installation of the product and replacing the product after the end of its useful life. The chipper (16) is U-shaped on the rear wall of the furnace, mounted horizontally with curved shelves, which ensures the presence of an “air pocket” between it and the furnace wall at the place of the greatest probability of burnout, which creates additional protection and increases the product's life. A fender (17), similar in shape and location, installed on the firebox door (19) prevents overheating of the door and the handle of the firebox door. The furnace door (19) is installed at an angle to the front wall of the furnace (18) located vertically, which contributes to its easy closure and, in addition, insures the user from errors during operation. The door (19) is equipped with additional shelves that increase fire safety during operation. The prefabricated design of the product allows the use of materials with different thicknesses depending on the required power.

Differences from the prototype. The design of the claimed utility model is welded rather than solid, which reduces assembly time and increases the productivity of manufacturing products without compromising product quality. In addition, in the manufacture of a one-piece sheet metal construction, the possibilities of increasing heat transfer are limited: the greatest efficiency is achieved with a material thickness of 4-5 mm, higher - heat transfer efficiency is lost, lower - the design becomes short-lived. In the inventive design of the furnace, the furnace is formed by the walls of parts of different thicknesses, which gives a reduction in production costs and at the same time increases the service life, fire safety increases, and efficiency also increases, i.e. heat output, the furnace cools more slowly. The prototype ash box closes the lower part only partially, which increases the risk of fire. The prototype rectangular chimneys are located on the side of the furnace, which impairs traction. In the claimed design, the chimneys have a trapezoidal shape and are located directly above the firebox. This reduces the heating time of the furnace to a working state, and also contributes to the self-cleaning of the furnace. The prototype casing is non-removable, which makes it difficult to care for the product. Unlike the prototype, the claimed design of the casing is removable, which improves the possibility of care and increases the service life of the product. In the prototype, the water heater heat exchanger is made in the form of a U-shaped pipe connected to a removable water tank, which reduces the efficiency. The claimed design of the heat exchanger with two threaded pipes located respectively in the upper and lower parts, is made in the form of a box, rigidly fixed to one of the walls (or several walls) of the product body.

The advantages of the claimed utility model:

- removable side panels for outweighing mounted tanks;

- octagonal firebox, which allows you to save the geometry when heated.

- U-shaped cutter, which serves to increase the service life of the product.

- the plate under the grate is located along the entire length of the furnace, which increases the fire safety of the operation of the claimed design;

- around the perimeter, the protective casing has an octagonal section that repeats the shape of the case, which allows you to save the geometry of the product when heated;

- when installing the upper tank on the smoke pipe, the open-type heater is converted to closed;

- the reservoir under the stones is made with stiffeners, which retains its shape when heated.

Thus, the technical result is achieved by the fact that in a sauna furnace containing a body with a furnace, a pipe for removing gaseous products of fuel combustion, a heater, a water heater heat exchanger, flues, the inlets of which communicate with the cavity of the furnace, and the outputs with a pipe for removing gaseous products of combustion fuel, the furnace has the form of a multifaceted prism and, in contrast to the prototype, is formed by the walls of parts of different thicknesses that create inclined surfaces, which allows to achieve the effect of flame flowing around the furnace surfaces increase the life of the product at a lower metal content and simplifying assembly technology. The grate plate is made in the entire length of the firebox to increase the fire safety of the product. Around the grate there is a frame that prevents the complete removal of solid fuel combustion products from the grate plate, which contributes to the formation of a protective ash layer on it and provides additional protection against burning, which increases the service life of the product. The casing design uses removable panels, which provides versatility in the installation of a hinged tank on models without a heat exchanger (left, right, rear left, and right), makes it possible to individually select the desired configuration. If necessary, in the modification of the product for the heat exchanger, removable casing panels allow the use of hinged and remote tanks at the same time. Preservation of rigidity in the presence of removable panels is ensured by the design of the casing, repeating along the perimeter the configuration of the housing at intervals, and its fixation system on the housing of the product, consisting of corner inserts having at least three or more stiffeners fixed to the body of the product; lower fasteners of removable casing panels, additionally fixing corner inserts and creating a stiffening frame in the lower part of the casing; the upper decorative frame creating the stiffening frame in the upper part of the casing is removable for ease of removal / installation of casing panels when installing the tank or servicing the furnace. The removable upper frame increases the manufacturability of product repair in case of mechanical damage; greatly simplifies the process of replacing the product at the end of its life. The heat exchanger with two threaded nozzles located respectively in the upper and lower parts is made in the form of a box rigidly mounted on one (or several) of the walls of the product body. The heater and the top of the furnace, made in the form of a prism with a section of a trapezoid, form a system of self-cleaning chimneys, where due to rolling unburned fuel particles along the inclined surface of the top of the furnace and spilling them into special slotted gaps between the top of the furnace and the side walls, they burn out. Lighter particles burn out in the upper tapering part of the chimney. The bottom of the furnace is of a trapezoidal shape, provides the rolling of combustion products to the ash box. The chimney windows at the top of the furnace are triangular, the pads on the top of the furnace are designed to strengthen the place of the most likely occurrence of burnout and increase the operational life of the product. The cutter is made in the form of a channel and is located above the firebox, and in addition to the function of changing the direction of movement of smoke gases, it provides additional protection against burning and increases the manufacturability of the product assembly. The pre-heating tunnel is made as one unit with the furnace of the product, which increases the useful working volume of the furnace. In addition, the use of sufficiently thick-walled metal in the manufacture of the pre-heating tunnel and lining it with an additional layer of steel, for example, with a frame, increases the rigidity of the structure, which allows embedding the product in brickwork without the use of additional supporting elements (corners, channels, etc.). The tightness of the pre-furnace tunnel assembly increases the fire safety of the product. The decorative overlay on the frame of the pre-heating tunnel, closing the mounting gaps remaining after embedding the product in the brickwork, is removable to facilitate installation of the product and replacing the product after the end of its useful life. The U-shaped chipper on the rear wall of the furnace is installed horizontally with curved shelves, providing an “air pocket” between it and the furnace wall at the place of the most likely occurrence of burnout, which creates additional protection and increases the life of the product. A chimney mounted on the fire door that is similar in shape and location prevents overheating of the door and the handle of the fire door. The furnace door is installed at an angle to the front wall of the furnace, located vertically, which contributes to its easy closure and, in addition, insures the user from errors during operation. The door is equipped with additional shelves that increase fire safety during operation. The prefabricated design of the product allows the use of materials with different thicknesses depending on the required power.

The presence of additional heat transfer elements (for example, in the form of ribs located in a enclosed casing space, lining-amplifiers) increases the heat transfer of the furnace and provides more uniform heating of the bath room, which helps to improve its microclimate.

The essence of the claimed utility model is illustrated by the images presented in figures 1-5:

figure 1 - General view of the bath furnace,

figure 2 is a front view of the bath furnace (in section);

figure 3 - bath stove, side view (in section);

figure 4 is a top view;

5 is a remote element A; Where

1 - side wall;

2 - a plate under the grate;

3 - grate frame;

4 - removable panel;

5 - corner insert;

6 - top decorative frame;

7 - heat exchanger;

8 - heater;

9 - bottom of the furnace;

10 - top of the furnace;

11 - pad amplifier;

12 - cutter;

13 - pre-furnace tunnel;

14 - frame pre-heating tunnel;

15 - overlay decorative removable;

16 - furnace chipper;

17 - a chipper of a door;

18 - the front wall of the furnace;

19 - firebox door;

20 - ash pan-scoop;

21 - cast iron grate;

22 - chimney pipe;

23 - tank mounted;

24 - lower casing fasteners.

The furnace operates as follows.

Through the open door 19, solid fuel (firewood) is placed in the furnace on the grate 21, the ash box 20 is pulled out, the fuel is ignited. Gaseous products of combustion of fuel entering the furnace through openings in the top of the furnace 10 through the right and left chimney are connected in the cutter 12 and are sent to the pipe 22, the side walls of the heater 1 and the housing are heated. From the heated walls of the furnace, air is heated in the air ducts formed by the walls of the casing and the housing. Cold, denser air displaces lighter hot from these channels and, when heated, rises. Cooling off at the ceiling and walls of the bathhouse, the air goes down and enters the stove again. Simultaneously with the heating of the air, the water circulating in the heat exchanger 7 connected to a water tank (not shown) is heated, which can be placed at a distance from the furnace and is not limited in the volume of heated water. Also, water is heated in the tank, mounted directly on the side wall of the furnace.

Claims (7)

1. Sauna furnace, comprising a casing enclosed by a casing repeating in cross section the shape of the casing, a combustion chamber with a chimney, a pipe for removing gaseous products of fuel combustion, a heater, a pre-heating remote tunnel, as well as a removable water tank, a water heater heat exchanger, characterized in that the furnace is formed by the walls of parts of different thicknesses, creating inclined surfaces; the plate under the grate is made in the entire length of the furnace; there is a frame around the grate that prevents the complete removal of solid fuel combustion products from the grate plate; removable panels are used in the casing design; the system for fixing the casing on the body of the product consists of corner inserts having stiffeners fixed on the body of the product, lower mounts of removable panels of the casing, additionally fixing the corner inserts and creating a frame of rigidity in the lower part of the casing; the upper decorative frame creating the stiffening frame in the upper part of the casing is removable for ease of removal / installation of casing panels; a heat exchanger with two threaded nozzles located respectively in the upper and lower parts, is made in the form of a duct rigidly fixed to one of the walls of the product body; the heater and the top of the furnace, made in the form of a prism with a section of a trapezoid, form a system of self-cleaning chimneys; the bottom of the furnace has the shape of a prism with a section of a trapezoid; chimney windows at the top of the furnace are triangular; on the top of the furnace there are pads; the cutter is located above the furnace and is made in the form of a channel; the decorative overlay on the frame of the pre-heating tunnel, closing the mounting gaps, is removable; A U-shaped chipper on the rear wall of the furnace is installed horizontally with curved shelves, which ensures the presence of an air gap between it and the furnace wall at the place of the highest probability of burnout; the furnace door is installed at an angle to the front wall of the furnace, located vertically, and is equipped with additional shelves; a U-shaped chipper is installed on the firebox door with curved shelves horizontally, preventing overheating of the door and the handle of the firebox door. 2. Sauna furnace according to claim 1, characterized in that due to the removable casings, the right / left location of the tank mounted on the furnace is provided, or the simultaneous installation of several tanks on one furnace; if necessary, in the modification of the product for the heat exchanger, removable casing panels allow the use of hinged and remote tanks at the same time. 3. Sauna furnace according to claim 1, characterized in that the upper location of the tank is provided, while the stove heater is converted into a closed one. 4. Sauna stove according to claim 1, characterized in that a rear tank arrangement is provided. 5. Sauna furnace according to claim 1, characterized in that it is made without a heat exchanger. 6. Sauna furnace according to claim 1, characterized in that in the manufacture of the pre-furnace tunnel using thick-walled metal and sheathe it with an additional layer of steel, for example, a frame. 7. Sauna stove according to claim 1, characterized in that in the prefabricated structure of the product, materials with different thicknesses are used depending on the required power.