RU218641U1 - DEVICE FOR INSTALLATION ON A SAUNA FURNACE FOR AIR HEATING AND STEAM PRODUCTION - Google Patents

Abstract

The utility model relates to heat engineering, namely to the designs of devices for installation on a sauna stove. The device for installation on a sauna stove for heating air and generating steam consists of a hollow body in the form of a rectangular parallelepiped with three holes for doors on the front wall and evenly spaced holes arranged in a row on the side and rear walls, as well as a hole for the outlet of a pipe for connection with a chimney on the back wall, and an opening at the bottom for installation on a sauna stove, and a pipe located inside the body, which has two crosses with slide gates at the ends of the branches, and the diameter of the upper cross is larger than the diameter of the bottom, grates are located across the body at three levels, while two levels are located between the crosses, and the third - above the upper cross, there is also one gate valve in the pipe, located between the crosses. The technical result is the transfer of maximum energy to the stones in the furnace, accumulating heat, due to which the thermal load on the chimney is reduced and the high efficiency of the furnace is ensured. And also this design allows you to produce a firebox and bath procedures at the same time.

Description

The utility model relates to heat engineering, namely to the designs of devices for installation on a sauna stove. It is used as a superstructure on a sauna stove for direct heating of stone and heat accumulation.

A chimney-heat exchanger is known from the prior art (utility model patent RU 120485 U1, publ. 09/20/2012), which contains a hollow body with inlet and outlet nozzles, inside which a brake device is installed for flue gas deceleration and heat exchange. The braking device is made in the form of dampers with cutouts, while the dampers are installed inside the body and fixed on transverse axes with the possibility of rotation so that in the position when the dampers are located across the body, their cutouts form a zigzag gas duct, and levers are fixed on the axes outside the body, free the ends of which are connected with a common rod by means of hinges for setting the shutters in a predetermined position.

A furnace is known (patent US 4406276 A, publ. 09/27/1983), the ceramic casing of which covers the combustion chamber and the spiral chimney and consists of blocks superimposed on each other, each of which has the same cross-sectional shape as the section of the casing corresponding in height . The upper unit consists of a cover equipped with a chimney for connection to the chimney. The intermediate blocks comprise at least one set of blocks substantially identical in shape. To facilitate the construction of the furnace and ensure better use of the heat of flue gases, each of the blocks has an annular groove on each end facing the neighboring block, which is overlapped by the neighboring block and contains a refractory sealing cord sealing the joint between the indicated neighboring blocks. The firing chamber is surrounded by a refractory insert structure, which is located inside the blocks surrounding the firing chamber. Each of the blocks located above the plug-in structure contains a core surrounded by one turn of the helical flue gas channel.

The closest analogue is a wood-fired sauna stove for direct stone heating (patent for invention RU 2725714 C1, publ. 07/03/2020), the body of which has a cylindrical shape, and thermal insulation is placed on the inside of the body. Lockable openings are located in the lower part of the case around the perimeter. The furnace is located inside the body and is fixed on a platform with height-adjustable legs, on which the outer body of the furnace also stands. The firebox has a cylindrical shape, part of the firebox is a portal with a door. The bottom of the firebox is made inclined, in the central part it has an opening locked by a grate. In the upper part of the firebox there is a hole of such a shape that ensures the swirling of the outgoing pyrolysis gas. The air preparation chamber is the space between the firebox and the inside of the heat-insulated housing. The openings for the entry of heated air masses into the afterburning chamber of the pyrolysis gas have guides that provide a directed swirling entry into the afterburning chamber. At the same time, the pyrolysis gas afterburning chamber has a cylindrical shape, the lower part of the chamber is the upper part of the furnace, the side wall is the upper side part of the air preparation chamber, the upper part of the chamber is the bottom of the heater, and it has at least one hole, which has guides , providing the twisting of the outgoing burning pyrolysis gas. The heater is a cylindrical chamber in which the flame passes directly through the stones. In this case, the entry into the chamber of burning gases occurs through holes with guides that support further twisting of the flame. There are at least two openings in the upper part of the heater: one removes exhaust gases and passes into the chimney, blocked by a dead valve, the other with a door. The coal receiver is a rectangular drawer, tightly adjoining the lower part of the furnace, having guides in the upper part for moving the grate or the cover of the coal receiver along it. Handles are located in the front and rear parts of the coal receiver, while the coal receiver is located in the canister under the firebox.

The disadvantages of the above inventions are the high thermal load on the chimney, low efficiency and the inability to produce a firebox and bath procedures at the same time.

The task to be solved by the claimed utility model is the development of a design for installation on a sauna stove with a system of slide gates, as well as the creation of a gray sauna.

This problem is solved due to the fact that the device for installation on a sauna stove for heating air and generating steam consists of a hollow body in the form of a rectangular parallelepiped with three holes for doors on the front wall and evenly spaced holes arranged in a row on the side and rear walls, as well as a hole for the pipe exit for connection with a chimney on the back wall, and a hole at the bottom for installation on a sauna stove, inside the body there is a pipe with two crosses with slide gates at the ends of the branches, and the diameter of the upper cross is larger than the diameter of the lower one, grate bars are located across the body at three levels grilles, with two levels located between the crosses, and the third - above the upper cross, there is also one slide gate in the pipe, located between the crosses.

The technical result is the transfer of maximum energy to the stones in the furnace, accumulating heat, thereby reducing the thermal load on the chimney and ensuring high efficiency of the furnace. And also this design allows you to produce a firebox and bath procedures at the same time.

The concept of "bath" in gray "is, on the one hand, direct contact of flame and smoke with stones, on the other hand, the removal of flue gases to the outside, which allows you to keep the steam room clean.

The essence of the utility model is illustrated by drawings:

Fig. 1 - general view of the device;

Fig. 2 is a front view without the front wall of the housing.

The figures indicate: 1 - body; 2, 3, 4 - holes for doors; 5 - lower cross; 6 - upper cross; 7 - slide gate; 8, 9, 10 - grate; 11 - knob for adjusting the position of the slide gate.

A device for installation on a sauna stove for heating air and generating steam consists of a hollow body 1 in the form of a rectangular parallelepiped and a pipe located inside the body 1. Housing 1 has on the front wall two openings for doors 2,3 for supplying water to produce steam and one opening for door 4 for kindling the furnace. To connect the pipe to the chimney, on the back wall of the housing 1 there is a hole on top of the appropriate size. To install the structure on the sauna stove in the body 1 there is a hole at the bottom. Also on the side and rear walls of the housing 1 there are evenly spaced holes arranged in a row, which are needed for steam to escape. The pipe inside the housing contains two crosses 5,6, and the diameter of the upper cross 6 is greater than the diameter of the lower 5. To be able to control the trajectory of the movement of flue gases at the ends of the branches of the crosses 5, 6 slide gates are installed (not visible in the figures), also one slide gate 7 is installed in the pipe between the crosses 5, 6. Across the body on three levels there are grates 8, 9, 10, on which there is a stone for heat accumulation, while two levels are between the crosses 5, 6, and the third is above the upper cross 6.

The device is mounted on a furnace or other furnace unit from above through the lower crosspiece 5. Sliding dampers act as plugs, they close hermetically and thus do not allow the passage of flue gases and flames. The position of the slide gates is adjusted from the outside of the housing 1 using handles with a handle 11, for which there are corresponding holes on the walls of the housing 1. High-temperature flue gases and part of the flame during the combustion of firewood in the stove enter the device for installation on the sauna stove through the lower crosspiece 5, bypassing the main chimney channel. The removal of flue gases is carried out through the upper crosspiece 6. When the pipe is fully heated, the process of afterburning gases occurs. The grates 8, 9, 10 are installed on the ledges inside the housing 1 to the rear and front walls, two at the same level. The stone placed for heat accumulation on the grate 8, 9, 10, which are located at the levels between the crosses 5,6, is heated by an open fire and has a temperature of more than 500°C. This design is simple, easy to install on the furnace, and maintains high safety of use.

The device for installation on a sauna stove, including all its components, can be made of stainless steel or steel 09G2S.

The dimensions of the body 1 depend on the size of the stove and chimney, and the individual needs of the user. The optimal geometric parameters of the housing 1 may have the following dimensions, which are not limiting:

body height 1 - 1400 mm;

width - 460 mm;

depth -500 mm.

The diameter of the lower cross 5 can be 150 mm, and the upper 6 - 200 mm.

Test tests showed the maximum increase in the efficiency of the furnace, a significant decrease in the temperature of the outgoing gases and an increase in the temperature of bath stones when using the claimed utility model. The results are presented in table 1.

The device works as follows.

When the gate valve 7 is closed in the pipe between the crosses, four valves open at the ends of the branches of the lower 5 and upper 6 crosses, respectively, the stones located on the grates 8, 9 are heated by the direct exit of the flue gas directly from the furnace itself. Flue gases come from below. Accordingly, with this position of the slide dampers, the flue gases cannot go along a straight path, they go along the path through the branches of the crosses 5, 6. When the flue gases move along this path, they pass through the grates 8, 9 between the crosses on which lies a stone that accumulates heat, thereby heating it. Flue gases pass through the branches of the lower cross 5, rise up, are drawn into the branches of the upper cross 6 and then removed into the chimney. After the stone has warmed up (45-60 minutes), the slide valve 7 is opened in the pipe between the crosses, and the flue gases begin to go directly into the chimney. Four slide gates at the ends of the branches of the lower 5 and upper 6 crosses overlap. After that, the front door 3 is opened, through which water can be supplied to obtain steam in the area of heated stones, and a “gray” bath is obtained.

Thus, the advantages of using the claimed utility model are the ability to produce a firebox and bath procedures simultaneously due to the possibility of directing flue gases through the chimney directly, with the slide gates at the ends of the branches of the lower 5 and upper 6 crosses in the closed position and the slide gate 7 in the pipe between the crosses in the open position , high efficiency, transfer of maximum energy to the stones in the furnace due to the presence of crosses 5, 6 in the pipe, thereby reducing the thermal load on the chimney.

Claims (1)

Device for installation on a sauna stove for heating air and generating steam, consisting of a hollow body in the shape of a rectangular parallelepiped with three holes for doors on the front wall and evenly spaced holes arranged in a row on the side and rear walls, as well as a hole for the outlet of the pipe for connection with a chimney on the back wall, and a hole at the bottom for installation on a sauna stove, and located inside the pipe body, characterized in that the pipe has two crosses with slide gates at the ends of the branches, and the diameter of the upper cross is larger than the diameter of the lower, across the body at three levels grate, while two levels are located between the crosses, and the third - above the upper cross, there is also one gate valve in the pipe, located between the crosses.

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