Recuperative air heater of revolving type. RU patent 2520274.
 Device and method to control non-combustible remains in recuperative heaters that contain such device / 2503886Device to control non-combustible remains comprises a recuperator (5), connected by one end with a combustion chamber (3), and with the other one to a pipe (4) of fuel inlet and a pipe (8) of furnace gases exhaust, these pipes are equipped with valves (2; 10) for alternation between the stages of inlet and outlet via the recuperator, this device also comprises a blowing circuit (1), connected to the recuperator (5) for blowdown from fuel, which it contains to the stage of removal, at the same time the specified circuit (1) of blowing is also provided to blow the pipe of fuel inlet (4), at the same time the device comprises a suction generator. The blowing circuit (1) includes a gas ejector (1.3). The circuit (1) of blowing includes a circulation fan. The blowing circuit (1) includes an inlet connected with an injection nozzle of the fuel inlet valve (2). The blowing circuit (1) directs the blown fuel to the combustion chamber (3). The device comprises a sensor (1.4), which determines, when all fuel has been blown from the recuperator (5). The sensor (1.4) is a temperature sensor. |
 Method to install modular multipass heat exchanger / 2500955Method to install a modular multipass heat exchanger includes installation of heat exchange modules with heat exchange tubes, by installation of heat exchange tubes, at least in two rows on a rectangular tube sheet and their closure by covering walls, headers of coolant supply and drain and at least one storage tank between two adjacent rows of heat exchange tubes. Tubes are installed in one plane. And installation of heat exchange modules with heat exchange tubes on a support frame by means of serial installation of heat exchange modules on it and connection of heat exchange modules with the help of covering walls at the side of the annular space by links. Preliminary shop installation of the heat exchanger is carried out. Heat exchange modules are installed on the support frame one after another in series in a horizontal plane. On the first heat exchange module and the support frame they mount aligning units for subsequent orientation of the first heat exchange module on the support frame in process of installation on the facility. Then the second heat exchange module is joined to the first heat exchange module. Flanged inserts are mounted on the first heat exchange module, through welding to end walls of the headers of coolant supply and drain, and a link in the form of a rectangular metal strip. Links are welded to the covering wall. On the second heat exchange module and the support frame they mount aligning units. And further, until the preliminary installation of the heat exchanger on the support frame is not completed. In case of final installation on the facility, the heat exchange modules are installed on the support frame one after another in series in the horizontal plane with fixation in aligning units. Flanges units of the previous heat exchange module are welded to the end walls of the following heat exchange module, forming a cavity of the working coolant. Links of the previous heat exchange module are welded to the end walls of the following heat exchange module, forming a cavity of the working coolant. Then bases of heat exchange modules are welded to the support frame. |
 Recuperator for radiant tubular burner / 2494309Heat recuperator for a radiant tubular burner includes a burner pipe and a discharge pipe. Burner is installed at the burner pipe inlet. Recuperator is installed at the discharge pipe outlet and includes a heat exchanger. Heat exchanger is located inside a connection pipe having the possibility of being connected to the discharge pipe. Heat exchanger includes a guide section for direction of the air that is subject to pre-heating to a tip located on the recuperator end on the flue gas inlet side, and a return section opening to a line supplying the air to the burner. The tip determines the way for changing combustion air flow direction to the opposite one and for its direction to the return section. Some portion of flue gases is carried over with combustion air and mixed with it. Heat exchanger occupies only some part of the connection pipe cross section, and the other part remains free for passage of flue gases to the outlet. Guide section of heat exchanger includes many heat exchange tubes parallel to the connection pipe axis. Both fluid media have parallel flows flowing in opposite directions. Heat exchange tubes are opened inside the tip. An air circuit is made in the form of a loop. The return section is offset in radial direction relative to the tubes of the guide section. Cross sections of heat exchange tubes and the return section are located on the outer side relative to each other. |
 Counterflow plate matrix-ring small-sized ceramic recuperator / 2450210Proposed counterflow plate ceramic matrix-ring recuperator is designed in the form of a row of cylindrical heat-exchange matrices of identical width and different diameter. Matrices are installed one into another coaxially. The matrix is a cylindrical sleeve assembled in the form of a pile of flat circular sheets - plates with holes and transverse slots that create a system of longitudinal channels when the plates are folded, and whenever matrices are coaxially installed one into another - a system of short transverse channels with a certain circumferential pitch. Holes in circular sheets create axial channels in the space, in which flows of heated air and heating gases that do not mix anywhere move separately in opposite directions. Along the perimetre of walls of openings in each plate with a certain pitch there is at least one intensifier arranged to renew a border layer, for instance, in the form of transverse grooves, systems of holes, ledges, etc. |
 Modular thermal power station on wood fuel granules / 2425282Modular thermal power station on wood fuel granules includes supply mechanism of wood fuel granules (5a), combustion chamber, ash removal device and Stirling engine (22), recuperator (11) of waste gas for pre-heating of air for combustion (10); at that, wood fuel granules are gasified with some portion of this hot air (13); at that, some portion (13) of hot combustion air (10) is directed from above grate (4) to gasification combustion chamber (3a) and thus, combustible gas (18) together with ash is ingested with pressure blower (7) of side channel through grate (4) downwards; at that, combustible gas (18) under grate (4) is mixed with pulse of flow of the rest portion (14) of hot combustion air (10) so that low lambda value is kept near limitation as to CO, and combustion in central nozzle (19) is stabilised depending on temperature in combustion chamber (3b), or flameless combustion state is set with increasing temperature in combustion chamber (3b); at that, in combustion chamber (3b) the potential vortex appears (20), which intensively mixes waste gas (6), combustible gas (18) and hot combustion air (14) so that combustible gas (18) and ash particles are completely combusted. Ash together with waste gas (6) is drawn through recuperator (11) of waste gas and heat exchanger (24) connected after it with temperature of waste gases below due point; at that, such high flow velocity is maintained so that ash particles cannot deposit on heat exchanger walls; ash particles in heat exchanger (24) with temperature of waste gases below due point are mixed with water vapour condensate appearing there; at that, soluble components are dissolved in water vapour condensate, and non-soluble component parts are washed away or entrapped with water vapour condensate and waste gas flow (6), and even small particles are washed away by means of internal mixing of waste gas (6), ash particles and water vapour condensate from waste gas (6). Waste gas - water vapour condensate - ash mixture is separated before and after pressure blower (7) of side channel in separator (27) of waste gas and condensate of water vapour, for example in cyclone. |
 Polyfunctional air heater / 2422728Air heater includes the housing inside which pack of flat and perforated plates is arranged; the above plates are arranged in turn, which form gas and air channels between each other; holes in perforated plates are arranged in pairs in rows one opposite the other and equipped with washers made from dielectric material, through which wire pieces are also passed in pairs, perpendicular and at an angle relative to flat plates. Wire pieces are made from various metals and soldered on ends between each other, thus forming zigzag-shaped nets. At that, all nets of the same cross section are connected to each other in series through side holes in flat plates with wire pieces soldered to their ends, thus forming multi-row zigzag-shaped nets arranged one above the other in tiers in all gas and air channels; at that, each multi-row zigzag-shaped net is connected with its ends to collectors of electric charges, which are in their turn connected to terminals. |
 Method and device of radiation heating of industrial furnace / 2422726Radiation heating device of industrial furnace includes assembly (1) of the first burner, which includes the first burner (2) forming hot exit gas due to fuel combustion with combustion air, the first air supplying device (60) through which plenum air is supplied to the first burner (2), and the first tube (20) of radiation heating, which includes rear end section (20a) connected to the first burner (2), and front end section (20b) located at some distance from rear end section (20a) with possibility of passage of hot exit gas, which is formed with the first burner (2), from rear end section (20a) to front end section (20b) of the first tube (20) of radiation heating and transfer on this way of heat energy to tubular wall of the first tube (20) of radiation heating, assembly (1') of the second burner, which includes the second burner (2') forming hot exit gas owing to fuel combustion with combustion air, the second air supplying device (60') through which plenum air is supplied to the second burner (2'), and the second tube (20') of radiation heating, which includes rear end section (20a') connected to the second burner (2') and front end section (20b') located at some distance from rear end section (20a) with possibility of passage of hot exit gas, which is formed with the second burner (2'), from rear end section (20a') to front end section (20b') of the second tube (20') of radiation heating and transfer on this way of heat energy to tubular wall of the second tube (20') of radiation heating; the first connecting element (50) connecting rear end section (20a) of the first tube (20) of radiation heating to front end section (20b') of the second tube (20') of radiation heating so that at least some amount of exit gas, formed in the second tube (20') of radiation heating can be transferred to the first burner (2) and again combusted by using the first burner (2), the second connecting element (50') attaching rear end section (20a') of the second tube (20') of radiation heating to front end section (20b) of the first tube (20) of radiation heating so that at least some amount of exit gas formed in the first tube (20) of radiation heating can be transferred to the second burner (2') and again combusted by using the second burner (2'). Each connecting element is equipped with injection nozzle (76, 76') which injects exit gas from tube (20, 20') of radiation heating, which is connected to it. Injection nozzle (76, 76') is provided with possibility of movable adjustment providing the control of the amount of exit gas drawn from tube (20, 20') of radiation heating, which is connected to it. |
 Net recuperator / 2419034Invention refers to compact and efficient net recuperator. The essence of the invention is like follows: heat exchanging surface of the recuperator corresponds to packages (modules) combined of certain amount of net matrixes (nets), i.e. composed of tubular structures interlaced out of thin-wall tubes. |
 Regenerative heat exchanger / 2395037In regenerative heat exchanger containing intermediate accumulator there used is blow pipe turned on bearings, which has nozzles for delivery water and air on free end. According to invention, the intermediate accumulator forms symmetric axis for two blow pipes located mirror-like opposite each other; each of those pipes has one nozzle for delivery air and water. Owing to mirror-like location of two blow pipes there provided on one hand is good cleaning, and besides reliable discharge of separated contaminations and big gap between cleaning processes is possible. |
 Counter-flow laminar matrix-circular ceramic recuperator / 2391614Air-gas counter-flow laminar matrix-circular compact ceramic recuperator consists of row of cylinder heat exchanging matrixes of various diametre arranged coaxially one in another. Also each matrix is made as a cylinder cartridge assembled as a pile of flat circular leaves-plates with holes and cross slits with specified circular step; the plates are designed for separate motion of air flows in them and for exhaust of hot gas. Notably, these air and gas flows never mix at their motion in space along spiral stepped cylinder channels and along short cross channels. |
 Fire air heater / 2246074Fire air heater has air duct which received ring fuel manifold with outlet ports oriented in the direction of air flow. The combustion stabilizer is made of ring cone, V- or U-shaped in cross-section, whose diverging member abuts against the manifold over its periphery from the side of inflowing air. The ignition device is mounted downstream of the fuel manifold. |
 Recuperative heat exchanger / 2246088The recuperative heat exchanger has rigidly fastened tube plates with tubes installed in them in concentric circles, the tube cavities communicate with one another for supply of the heat-transfer agent, connections for supply and discharge of the heat-transfer agent by means of which the tube cavities are connected, the heat exchanger has intermediate tubes, the cavity of each tube communicates with the cavities of the two adjacent tubes by means of two branches, and the cavities of the delivery and discharge branches communicate with the cavities of the first and last tube of the formed tube coil, the interaxial distance between the last and first tubes in the adjacent concentric circles equals the interaxial distance of the branches, the length of the tubes installed in the adjacent concentric circles differs by the value equal or exceeding the size of the branches fastened on the tubes. Besides, pouring holes are made in the tube plates for communication of the cavities between the plates, the heat exchanger is provided with a perforated or cellular casing and lugs fastened on the plates, it is also provided with a perforated tube with a connection for discharge of the heated heat-transfer agent, it is installed in the holes heat-transfer agent, it is installed in the holes made in the center of the tube plates. |
 Stage-type tubular air heater / 2246665Proposed heater ensures increase of temperature head of heat-transfer agents due to delivery of air to sections from one side on all tiers. Stage-type tubular air heater includes columns divided into heat-exchange sections and tiers connected by means of inlet preheated and cold air collectors and gas collectors and bypass air boxes provided with mixing units and dispensing pipes; inlet preheated air collectors are divided in heat-exchange zone into sections by means of partitions having equalizing ports at each tier; dispensing pipes of mixing unit are connected in parallel with cold air inlet collectors. |
 Glass-block air heater / 2247281According to proposed invention heat of smoke gases from boiler units and industrial furnaces is used for heating air delivered for burning. Air heater contains pack of glass blocks of heat-exchange members made of heat-resistant low-alkali reinforced or non-reinforced glass secured between two tube plates through seals by bolts and placed in housing with cover. Said glass heat-exchange members are essentially multichannel or single-channel glass blocks with air channels having rough surface of glass and, through wall, gas channels with smooth surface of glass, all arranged lengthwise each block. Glass blocks are arranged in multiple-row bond system with formation of through like channels lengthwise the pack interconnected in length through flexible seals with gaskets between rows, side surfaces of blocks and housing. |
 Regenerative air heater / 2265775Regenerative power heater comprises at least two sections which receive at least two heat exchanging units and diffuser and contraction pipe for supplying and discharging fluid to be cooled, and collectors for supplying and discharging the fluid to be heated. The heat exchangers are composed of four branches of heat exchanging pipes. The collectors are connected with the heat exchange pipes through individual pipe plates embedded directly into the wall of the corresponding collector for supplying and discharging air. Each of the heat exchanging pipes is provided with four or five or six bends. |
 Heat exchange block of regenerative air heater / 2266473In heat-exchange block of regenerative air heater, preferably block-sectioned, bank of heat exchange pipes is made four-drive and multi-row and has heat exchange pipes, positioned primarily in horizontal rows with vertical and horizontal gaps between each other filled with distancing elements, while geometrical characteristics of heat-exchange pipes of bank are decided on dependently on coefficients, first one of which concerns relation of volume, filled with heat exchange pipes in block, to common inner volume of heat exchange block, and second coefficient - relation of length of inner surface of heat exchange pipe to area of surface heat exchange, while relation of total length of heat exchange pipes, enveloped in transverse direction, to total length of inner areas of all heat exchange pipes of bank is 0,78-0,92, relation of sum of lengths of portions of heat exchange pipes, enveloped in longitudinal direction, to total length of inner areas of all pipes of bank is 0,05-0,18, and relation of sum of lengths of bend portions to total length of inner areas of all pipes of bank is 0,01-0,03. |
 Bank of heat exchange pipes for regenerative air heater / 2266474Bank of heat exchange pipes of regenerative air heater is made four-drive, multi-row and is formed by rows of heat exchange pipes, positioned with vertical and horizontal gaps filled with distancing elements, while for external branches of bank distancing elements, providing for distancing of heat exchange pipes along horizontal and vertical lines and their spatial holding, are formed by separator with openings for passing of pipes, made with possible holding in body of regenerative air heater, and for inner branches of pipes bank, distancing elements are made in form of folded plates, having alternating bearing portions positioned on two sides of plates, one on each of upper and lower shelves of fold for bearing contact of appropriate lower and upper projections of folded plates of similar heights and two inclined portions connecting projections, forming bearing elements for abutment of bank pipes, while together folded distancing elements form additional composite, spatial at least in cross-section, bearing grid, for at least appropriate branch of bank with longitudinal and transverse steps of elements forming it, appropriate for longitudinal and transverse steps of heat exchange pipes of bank. |
 Pipe row of regenerative air heater / 2266475Pipe row of regenerative air heater is made four-drive, while length of inner area of pipe in row is selected dependently on geometrical parameters of pipes, composing pipe row, and on step between longitudinal axes of adjacent pipes of rectilinear branches at different portions of rows, while step and length of inner area of heat exchange pipes of minimal and maximal length is selected in proposed range dependently on pipe diameter. Position of heat exchange pipes in row is selected with fulfilling of criterion, in accordance to which relation of area of inner surface of heat exchange pipes on rectilinear branches of row, positioned perpendicularly to flow of substance to be cooled, to volume, contoured by conditional planes, touching external surfaces of heat exchange pipes of row, with consideration of spaces between pipes, is 0,02-0,12 m-1. |
 Heat-exchange block of regenerating air heater / 2266476Heat-exchange block of regenerative air heater, preferably block-sectioned, has body consisting of spatial frame, bottom, upper lid and end walls, collectors for injection and drainage of heated substance with pipe boards and multi-route multi-row bank of heat-exchange pipes, forming appropriately in each row an even number of rectilinear multi-pipe branches, including at least two internal and two external ones, joined in portions by bends of primarily similar radius for all pipes, while bottom, lid and one of end walls of block body are made in form of panels with casing of rigidity elements, forming flat rod systems, and spatial frame of block is formed by additional set of flat rod systems of frames of noted panels with intermediate posts connecting them and with bodies of collectors for injection and drainage of heated substance rigidly connected to them, which in turn are connected to bottom of block and to each other by two-ring diaphragms and displacer of inter-pipe environment, while portions of bodies of collectors for injection and drainage of heated substance with built-in pipe boards and inter-pipe environment displacer form together additional spatially developed rigid end wall of block body, and along longitudinal sides, frame is made with possible holding of respectively elements of diffuser and convergent tube for injection and drainage of cooled down substance, while cross section area of each collector is about 1,8-3,5 of total area of through section of heat-exchange pipes in the block. |
 Cyclonic heat-exchanging member of recuperator / 2278329Cyclonic heat-exchanging member comprises ring and central passages that are defined by inner and outer pipes plugged from one end and connected to the branch pipes for supplying and discharging air. The branch pipe for supplying air is mounted on the outer pipe tangentially. The inner pipe is shifted along the radius from the axis of the outer pipe in the direction opposite to the direction of inflowing of the high-temperature gas to the heating member. |
FIELD: ventilation.
SUBSTANCE: air heater includes a housing of cylindrical shape with air inlet and outlet branch pipes, a combustion chamber in the form of a cylindrical shell with a heat exchanger made of tubes installed in headers and located parallel to combustion chamber surface, and a stack. Transverse partitions are installed between the housing and the combustion chamber, an inlet header is connected to the combustion chamber, and an outlet header is located on the opposite side and connected to the stack; turbulisers made in the form of bent bands are installed in heat exchanger tubes, and the outlet header is equipped with a condensate drain branch pipe located inside a condensate warm-up branch pipe connected to an outlet air duct branch pipe with heated air.
EFFECT: improving heating efficiency of heat carrier and operating reliability of an air heater under ambient air low temperature application conditions.
2 cl, 3 dwg
The invention relates to a device for heating and ventilation of air and used for heating and ventilation of industrial and residential buildings, as well as in mobile installations.
Known air heater contains a shell with pipes for inlet and outlet of the air inside the shell of a furnace with burner device and the chimney, convection part is made in the form of pipes connected with the ends collectors (p. RF №2126942). The furnace are connected with the chimney, made in the form of three horizontally installed pipes connected double taps. The smoke flue pipes with longitudinal ribs, and around each pipe is placed corrugated grid. Convection part is made as connected with collectors pipes with internal partitions, parallel to the airflow. Convection part is made separately from the furnace with the chimney.
The constructive position of the furnace with chimney and convection part is that the device is stretched horizontally and has a large size. The location of the pipe convective part in parallel air flow leads to the creation of a laminar flow of heated air, which greatly reduces the heat transfer coefficient. Running inside the flat channel partitions, and outside chimney corrugated grid increases the turbulence of the flow and increases heat dissipation, but this significantly complicated the whole structure and increasing complexity of manufacturing.
Known air heater selected as a prototype that contains the body of cylindrical shape with pipes for inlet and outlet air, combustion in the form of a cylindrical glass with heat exchanger, made of tubes installed in reservoirs and along the cylindrical surface of the combustion chamber and chimney, between the body and the combustion chamber is established cross partitions, input collector connected to the combustion chamber, and the output collector is located on the opposite side and is connected to the chimney (patent RF №2296270). The heater does not provide sufficient air heating during operation in conditions of low temperature and condensation and subsequent possible freezing of, interferes with the normal operation of the device.
Object of the present invention is to increase the efficiency of heating of the heat carrier and reliability of the stove in the conditions of use at low temperatures of ambient air.
The problem is solved due to the fact that in the recuperative air heater revolver-type containing the body of cylindrical shape with pipes for inlet and outlet air, combustion in the form of a cylindrical glass with heat exchanger, made of tubes installed in reservoirs and placed parallel to the surface of the cylindrical combustion chamber and chimney, between the body and the combustion chamber is established cross partitions, input collector connected to the combustion chamber, and the output collector is located on the opposite side and is connected to the chimney, according to the invention, in the tubes of the heat exchanger installed energizers, made in the form of curved lines and output collector is equipped with a condensate drain outlet, located inside the pipe heating condensate connected to the branch pipe output pipe with hot air.
Transverse partitions are made in the form of semirings, covering the combustion chamber and exploded along the combustion chamber, while they are deployed to each other at an angle of at least 180 C and linked longitudinal septae.
The technical result is achieved owing to such design features as: the presence of a condensate drain outlet, located directly in the pipe heating condensate connected to outlet duct, and the presence turbulizer inside heat-exchange pipes, and enhance the efficiency and reliability of heat removal cooled air heater when used at low temperatures of ambient air.
Due to the location of the parallel pipes cylindrical surface of the combustion chamber, and the presence of transverse bulkheads, made in the form of semirings exploded along the combustion chamber and rotated relative to each other at an angle of at least 180 degrees and related longitudinal septa, leads to the heated air moves in a spiral, washing all pipe heat exchanger, which increases the heat transfer coefficient, because there is a change of the mode of movement of air from laminar to turbulent, i.e. result in the intensive mixing of layers of hot and cold air.
The presence turbulizer inside the pipes, made in the form of bent tapes, further increase the transfer of heat air flow, i.e. heat transfer efficiency is improved by intensive mixing of hot gas inside the pipes. The formed condensate in liquid form, when working in the climatic conditions of low temperatures, prone to freezing. Supply output collector condensate drain outlet, located inside the pipe heating condensate connected to outlet duct with warm air leads to the solution of this problem, an opportunity to use the data of the air heater when working environment with low temperatures.
The above distinctive features are new in comparison with the prototype, so the invention meets the criterion of "novelty".
Patent research has showed that in the studied prior art do not have the same technical solution, i.e. the proposed technical solution is not clear from the studied art and, therefore, meets the criterion of "inventive step".
This solution may be reproduced by industrial way, therefore, it meets the criterion of "industrial applicability".
The invention is illustrated by drawings, where figure 1 presents a General view of the heater; on figure 2 schematically shows running inside; figure 3 - section a-a in figure 2.
Regenerative air-heater revolver-type contains a body 1, combustion 2, made in the form of a cylindrical glass, located on the outside of the housing 1 burner (not shown), fan motor 3, flue 4. Inside 1 side burner is adjacent input collector 5, and from the side of the chimney 4 - output collector 6. Around the combustion chamber 2 parallel to its surface by means of tube sheets 7 and transverse bulkheads 8, are the tubes 9 energizers 10 inside, in the form of bent tapes. Cross partitions 8 made in the form of semirings exploded along the combustion chamber 2 and deployed to each other at an angle of at least 180 degrees. Cross partitions 8 interconnected longitudinal septa 11. Inlet manifold 5 is connected to the combustion chamber 2 through tube 7 and has a flange (not shown) for connection with case 1 and a hole for the installation of a torch. Output collector 6 are connected to the video 1 through a second tube 7 and flange (not shown) and includes the chimney 4 and nipple discharge 12, located inside the pipe heating condensate 13. The inlet duct 14 connected to the fan with electric motor 5. Output duct 15 is located on the body 1 by the input collector 5 and contains nozzle selection of warm air 16, connected by a flexible hose 17 with a pipe heating condensate 13.
The device works as follows.
Products of combustion flue gases enter the combustion chamber 2 through the inlet manifold 5 in the tubes 9 and through the collector outlet 6 in the chimney 4. Cold air through the inlet duct 14 enters the space between buildings 1 and combustion chamber 2. Washing pipes 9 and avoiding cross partitions 8 related longitudinal septa 11, air, moving in a spiral, heated and comes out through the outlet duct 15. Formed in turbulent flow involves the transfer of heat between the air and the walls of heating elements.
Flue gases, having reached the end wall of the combustion chamber 2, go back through the inlet manifold 5, pipes 9, output collector 6 enter the chimney 4. In this arrangement, movement is afterburning of oxidizer-rich gas in the combustion 2, which also increases the efficiency of combustion gases, and thus increases the efficiency of heat transfer.
The proposed set-up with the above design features that will allow to increase the efficiency of heat transfer during operation of the stove, especially at low ambient temperatures. The heater provides air heating up to the temperature from 90-200°N air Heater cost-effective, reliable and convenient in operation. As the case of the round form, it allowed installing the stove with the orientation of input and output flanges as needed.
1. Regenerative air-heater revolver-type containing the body of cylindrical shape with pipes for inlet and outlet air, combustion in the form of a cylindrical glass with heat exchanger, made of tubes installed in reservoirs and placed parallel to the surface of the cylindrical combustion chamber, and the chimney, between the body and the combustion chamber is established cross partitions, input collector connected to the combustion chamber, and the output collector is located on the opposite side and is connected to the chimney, characterized in that the heat exchanger tubes installed energizers, made in the form of curved lines and output collector is equipped with a condensate drain outlet, located inside the pipe heating condensate connected to the branch pipe output pipe with hot air.