• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a mobile solid fuel firing system (2) with a heat exchanger (6), a solid fuel burner (38), a combustion chamber (4) with a firing bottom (44) and an overlying flue gas vent (54) which is in a flue gas discharge (56) Hot side of the heat exchanger (6) opens, and with an ambient air duct with a blower (32) for driving ambient air through the cold side of the heat exchanger (6). In order to achieve a particularly clean operable solid fuel firing system (2), it is proposed that the combustion chamber (4) has a deflection unit (48) arranged above the firing floor (44), which divides the combustion chamber (4) into an upper and a lower combustion chamber space (58 , 60) and at least 25% of the free cross-section of the combustion chamber (4) between the combustion chamber spaces (58, 60) obstructed.
    公开号:AT15103U1
    申请号:TGM442/2014U
    申请日:2014-12-17
    公开日:2016-12-15
    发明作者:
    申请人:Lasco Heutechnik Gmbh；
    IPC主号:
    专利说明:

    Description: The invention relates to a mobile solid fuel firing system with a heat exchanger, a solid fuel burner, a combustion chamber with a combustion bottom and an overlying flue gas outlet, which opens into a flue gas discharge to the hot side of the heat exchanger, and with an ambient air duct with a blower for driving ambient air through the cold side of the heat exchanger.
    A mobile solid fuel burning plant can be used for hay drying, for drying a building, for heating a tent or a building or for similar purposes. For this purpose, the solid fuel firing system is driven to its place of use, parked there and put into operation. After the end of the intended operation, the solid fuel firing system is moved back to a warehouse or to a next operating location. For operation, solid fuel is burned in the combustion chamber, with the heat released being supplied with the flue gas to a heat exchanger.
    For cooling the heat exchanger, this can be traversed by a cooling air flow, which dissipates the heat from the heat exchanger and passes in an air flow into the building, the tent, a Heutrocknungsraum or the like.
    When operating the mobile solid fuel burning plant at changing locations, there may be incidences that a particularly clean combustion is desired, for example when used for heating a marquee.
    It is an object of the present invention to provide a mobile solid fuel burning plant, which is particularly clean operable.
    This object is achieved by a mobile solid fuel burning plant of the type mentioned, in which the combustion chamber according to the invention comprises a deflector disposed above the combustion chamber, which divides the combustion chamber into an upper and a lower combustion chamber space and at least 25% of the free cross section of the combustion chamber between blocked the combustion chamber spaces. Conveniently, the deflection unit blocks at least 35%, in particular at least 45% of the cross section between the combustion chamber spaces.
    The invention is based on the consideration that a relatively high fly ash content in emerging from the solid fuel burning exhaust gas is not desired depending on the location. The separation of fly ash from the flue gas is therefore desirable. The deposition can take place in the entire flue gas path from the combustion chamber to the flue gas outlet, it being particularly advantageous to eliminate the fly ash already in the combustion chamber from the flue gas. The fly ash can then be removed with the large amount of fire ashes and need not be removed separately at another location of the flue gas duct.
    The invention is based on the further consideration that a discharge of fly ash from the flue gas can be done by forming vortices or kinks in the flue gas path, from which the fly ash is thrown out. This is advantageously done at a location where the fly ash is not swept up again by the rising hot flue gases. In order to achieve a conditional by vortex ash discharge from the flue gas, the invention proposes the arranged above the combustion floor deflection unit. It is located in the rising hot flue gas of the burning fire on the hearth and deflects the rising flue gases. By this deflection in the form of vortices or Rauchwegknicken fly ash is eliminated from the flue gas and can fall, for example, on the side of the combustion chamber down, since there may be a downwardly directed gas flow. The fly ash can reach the fire ash and be removed with this from the combustion chamber.
    By deflecting the further advantage can be achieved that the hot flue gases remain longer in a combustion region in the combustion chamber, so when behaves tively small combustion chamber good combustion can be achieved within the combustion chamber. The combustion chamber can be made smaller and the volume of the mobile solid fuel combustion system can be reduced. This is also conducive to a lighter weight of the furnace.
    Next, the firing system is a mobile firing system, which is therefore intended to be transported by a vehicle to its place of use, operated there and later operated again at another site. For this purpose, the combustion plant expediently comprises a load-bearing construction and a lifting element, which is prepared to lift the entire furnace by means of a lifting device on the lifting element. The lifting element may be an insert for a forklift, an upper attachment for a cable suspension of a crane or the like, so that the furnace can be raised and parked, for example, on a loading area. In particular, inserts for standardized forks of a forklift are advantageous. The load-bearing construction expediently comprises a support frame with supports to which side walls are fixed in a housing-like manner. It is also possible that the carrier are formed by folds of housing-forming wall panels. In order to achieve an easier movement of the firing system on site, it is advantageous if the firing system has its own drive unit with wheels. Practical are four wheels. For a safe stand during operation wheels are only on one side of the plant, e.g. two wheels, sufficient, connected to a non-rolling support unit, e.g. a wheelless support foot. With one or more handles, such as a grab bar on the ambient air inlet side, the furnace can easily be moved manually.
    The heat exchanger is suitably a gas-gas heat exchanger with a hot side, through which the hot flue gas is guided during operation of the mobile solid fuel combustion system, and a cold side, for example, ambient air out of the environment of the solid fuel burning system and heated there. Then the hot air from the furnace can be blown into the environment or an air hose.
    The solid fuel firing system is suitably prepared for the combustion of a biofuel furnace, ie a non-fossil fuel. Particularly advantageous is a wood-burning plant for use with, for example, wood chips or pellets. Accordingly, the solid fuel burner is made to burn solid, especially wood, and includes a fuel supply with an automatic feed unit for automatically feeding fuel into the combustion chamber, e.g. on the firebox. A feed motor of the feed unit can be controlled by a control unit, in particular depending on a combustion parameter, such as the combustion temperature, the exhaust gas temperature and / or the hot air temperature.
    The combustion chamber is suitably lined with Brennkammersteinen, for example fireclay bricks, to allow a high flue gas temperature in the combustion chamber and thus a low-emission combustion. The firebrick lining can surround the combustion chamber at least laterally. The combustion chamber comprises the combustion floor, which forms an area on which combustion takes place in the combustion chamber during operation of the combustion plant. The flue gas outlet may be an upper opening of the combustion chamber, which opens into the flue gas discharge leading to the hot side of the heat exchanger. The two combustion chamber spaces may comprise the space which is laterally surrounded by a fireclay lining. Also possible is the space of the combustion chamber between vertical combustion chamber walls and / or between the combustion floor and the combustion chamber ceiling.
    The ambient air duct may lead from an ambient air inlet in the housing of the firing system through the cold side of the heat exchanger and on to an ambient air outlet in the housing of the firing system. In the ambient air inlet - or at a distance to a fan radius to - the ambient air blower is expediently arranged, which pushes the ambient air into the housing of the furnace and back out of this. The ambient air duct expediently runs through the heat exchanger and in particular also at least laterally around the combustion chamber in order to cool it as well. The ambient air inlet and the ambient air outlet are expediently arranged in opposite sides of a housing of the furnace.
    The deflection unit divides the combustion chamber in the upper and lower combustion chamber space and blocks the access from the lower to the upper combustion chamber space at least partially. Advantageously, a direct access of the flue gas from the furnace bottom to the flue gas outlet is blocked, the direct access may be straight or on the line of the central smoke in absent deflector and full load operation. The deflection unit is advantageously arranged below a combustion chamber ceiling, so that the upper combustion chamber space can lie between the combustion chamber ceiling and the deflection unit.
    In an advantageous embodiment of the invention, the deflection unit is arranged vertically above the firing floor. The flue gas rising vertically upwards from the firing floor is prevented by the deflecting unit from further vertical upward movement and forced onto a bypass track, which can be bent sideways and leads upwards around the deflecting unit. The flue gas is thus deflected laterally by the deflecting unit and can flow out of the combustion chamber in the further course, in particular vertically upwards and further through the flue gas outlet. As a result of the deflection, the flue gas experiences a lateral acceleration, in particular from a lateral upward direction, which favors the separation of fly ash from the flue gas.
    Conveniently, the deflection unit is arranged in the form of an intermediate ceiling between the two combustion chamber spaces. A passage from one to the other combustion chamber space is blocked by a closed surface, so that a sweeping deflection of the flue gas and thus an effective ash discharge is made possible.
    A far-reaching turbulence of the flue gas associated with a relatively low flow resistance can be achieved when the deflection is arranged axially centrally in the combustion chamber. The combustion chamber axis expediently extends vertically and in particular through the geometric center of the combustion floor and / or in the vertical geometric center line of the combustion chamber with respect to the side walls. The flue gas can flow around the deflection unit expediently on all sides. Advantageously, the deflection unit is executed over the entire surface, so that a gas passage through the surface of the deflection is completely blocked. A central axial region of the combustion chamber can thereby be blocked in the vertical direction.
    Advantageously, the geometry of the combustion chamber is polygonal with more than four corners, such as pentagonal, hexagonal, octagonal or with a different number of corners, up to the round design. Further, it is advantageous if the deflection unit has a polygonal geometry with more than four corners, wherein the round geometry with infinite many corners should also be included. Expediently, the geometries of the combustion chamber and the deflection unit correspond, so that therefore both units have the same number of corners in their geometry. The corners are advantageously aligned in the same directions.
    Further, it is advantageous if the deflection unit around mutually opposite edge regions, expediently flowed over a peripheral region of the deflection of at least 360 °, wherein the angle can refer to an imaginary pointer, which rotates perpendicular to the axis of the combustion chamber. The flue gas can therefore flow around the edge region of the deflection unit over the circumference of at least 360 °, in particular at least 330 °. The angular range may be continuous or interrupted, e.g. by a suspension of the deflection unit. The edge, to which the degree refers, can thus be performed circumferentially or interrupted by one or more brackets or support elements with respect to a flow around in the region of the holder.
    A good turbulence of the flue gas in the combustion chamber can also be achieved if between the combustion chamber wall and the deflection a gap, in particular an annular gap, is present, whose width is less than 50% of the diameter of the deflection in the direction of the gap width. This is conveniently around the deflector so, with one or more portions of one or more support members carrying the deflector unit being excluded.
    A turbulence of the hot flue gas below the deflection unit, it is beneficial if it has a downwardly directed concave shape. Expediently, at least the predominant surface of the deflection unit is concave downwards, in particular at least 90%. Upwardly rising hot flue gas entering the central region of the deflector is forced onto a partially downwardly directed path, thereby promoting turbulence. Also an ash separation is favored thereby.
    Advantageously, the deflection comprises a plate which is from the top and from the bottom of the flue gas on or flow around and in particular causes most of the deflection of the flue gas in the combustion chamber. The deflection unit can thereby be made particularly simple and robust.
    A simple attachment of the deflection in the combustion chamber can be achieved if it has a support element with which it is attached to the combustion chamber, in particular mounted in this. Such a fastening is particularly simple when the combustion chamber has a lining with combustion chamber bricks and the deflection unit or a support element of the deflection unit is suspended via at least one combustion chamber brick. The combustion chamber brick expediently forms part of the vertical wall of the combustion chamber.
    An effective excretion of the very light fly ash from the combustion chamber can be achieved if the firing floor is at least on two opposite sides, in particular at least predominantly surrounded by a depression. In this depression, the fly ash can sink and there kept at least somewhat shadowed by the gas turbulence in the combustion chamber or fed into an ash collection unit. Conveniently, the depression is made around the firing floor and suitably extends directly to the vertical Brennkammerwandung. Advantageously, the depression is arranged vertically below the radially outwardly directed edge of the deflection unit. There excreted fly ash can fall down into the depression.
    Advantageously, the recess opens, in particular down into an ash collection unit, for example, an ash box, in particular below the combustion bottom. The ash collecting unit can completely surround the firing floor or be arranged around under the firing floor.
    In a further advantageous embodiment of the invention, the combustion bottom is a burner plate with a lower and in particular central opening, into which opens a fuel supply. Central combustion with a peripheral ash discharge can be easily achieved. The firing plate is expediently arranged at least predominantly, in particular completely below the deflecting unit.
    The mobile solid fuel combustion system expediently comprises a secondary air supply to the combustion chamber. This expediently flows laterally into the combustion chamber, so that air can be radiated laterally into the flames during operation. A good turbulence of the flue gas and thus an ash discharge, it is beneficial if the deflection is arranged at least predominantly above the secondary air supply into the combustion chamber. The secondary air supply can flow the air into the radially inwardly directed part of a flue gas vortex, so that the vortex is strengthened and the ash discharge is promoted. The secondary air supply is expediently arranged at least 270 ° about a combustion chamber axis, wherein in particular at least three Einstrahlelemente, in particular Einstrahlrohre, are present. A primary air feed can open into the combustion chamber from below, in particular through the combustion floor.
    Further, it is advantageous if the combustion chamber has a secondary air supply and the deflection unit is arranged to the secondary air supply, that the secondary air supply in nominal load operation radiates combustion air into a flue gas vortices generated by the deflection unit. The vortex can be strengthened and the ash discharge can be favored. Expediently, the combustion air opens pointedly into the vortex, expediently into an inwardly directed region of the vortex.
    In a turbulence and thus a good combustion, it is also beneficial if the combustion chamber has a secondary air supply with a plurality of Einstrahlelementen, which are arranged in the form of a vortex to each other. The vortex is expediently aligned with an axis parallel to the combustion chamber.
    In addition, the invention is directed to a method for burning solid fuel in a mobile solid fuel burning plant, wherein the solid fuel is burned on a combustion bottom of a combustion chamber of the solid fuel combustion system. Hot combustion gases rise from the combustion, meet according to the invention to a deflection unit arranged in the combustion chamber and flow around them laterally. Advantageously, the hot combustion gases continue to flow upward into an upper combustion chamber space above the deflection unit and from there into a flue gas outlet.
    The previously given description of advantageous embodiments of the inventions contains numerous features, which are given in the individual subclaims partially summarized in several. However, those skilled in the art will conveniently consider these features individually and summarize them to meaningful further combinations. In particular, these features can be combined individually and in any suitable combination with the device according to the invention and the method according to the invention.
    The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following description of an embodiment which will be explained in connection with the drawings. The embodiment is illustrative of the invention and does not limit the invention to the combination of features set forth therein, including functional features. In addition, suitable features of the exemplary embodiment can also be considered explicitly isolated and combined with the method according to the invention or the device according to the invention.
    1 shows a mobile solid fuel firing system with a combustion chamber, a heat exchanger and a circulation of ambient air through the heat exchanger, FIG. 2 shows the combustion chamber in a partially opened representation, FIG. 3 shows the combustion chamber with the combustion chamber ceiling removed in a plan view from above and Figure 4 is a schematic representation of flue gas in the combustion chamber, which is deflected by a deflector downwards.
    1 shows a schematic representation of a mobile solid fuel burning plant 2, which is prepared for transport to several different locations. The solid fuel firing system 2 comprises a combustion chamber 4 and a heat exchanger 6, which are mounted in a transport frame 8. The transport frame 8 comprises at its lower end insertion openings 10 for inserting the fork of a forklift. Laterally and above the transport frame 8 is formed formed by folds of the respective side panels or the plant ceiling, which together with the bottom form a transport-stable and weatherproof outer housing 12. To ensure good on-site mobility, the solid fuel firing system 2 is equipped with a four wheel 14 wheel system, of which the two rear wheels 14 have a pivot mechanism 16 for rotating the wheels 14 about a vertical axis. For pushing or pulling the solid fuel combustion system 2, a handle 18 is provided above an ambient air blower 32, which preferably extends over the entire width of the rear wall of the outer housing 12.
    1 shows the solid fuel combustion system 2 in a highly simplified and schematic manner, with essential elements, which are immaterial to the explanation of the invention, has been omitted for clarity. The mobile solid fuel combustion system 2 has a nominal power of 50 kW in this embodiment and is fueled with solid fuel, in particular wood, such as wood pellets. For this purpose, a non-illustrated fuel storage can be connected to the solid fuel burning plant 2 via a fuel channel, through which the solid fuel 20 reaches a delivery unit 22, which is shown only schematically in FIG. The delivery unit 22 comprises a screw conveyor, by means of which the fuel - controlled by an electrical control unit - is automatically conveyed into the combustion chamber 4 and there to a combustion bottom 44.
    The firing bottom 44 is designed in the form of a burner plate with a central opening, which opens into the conveyor unit 22, so that solid fuel 20 is pressed through the conveyor unit from below by the central opening of the burner plate upwards. The solid fuel 20 is distributed radially outward and rests on a focal surface of the burner plate and can be burned there.
    The resulting from the combustion of the solid fuel 20 hot flue gases are discharged upward from the combustion chamber 4 and fed through an exhaust path 24 of a hot side of the heat exchanger 6 from above. The flue gas is passed from top to bottom through the hot side of the heat exchanger 6 and reaches a flue gas fan 26. The cooled in the heat exchanger 6 flue gas is blown out of this by a flue gas discharge 28 from the solid fuel burning plant 2.
    To remove the heat of combustion from the flue gas stream a Kühlluftström is guided in a cooling air path 30 in a countercurrent flow to the exhaust path 24, so it first meets cooler system parts and then hotter system parts, so that the heated air at the cooler system parts nacherwärmt to the hotter system parts becomes. The cooling air is sucked as outside air or ambient air by an ambient air blower 32 directly from the environment of the solid fuel combustion system 2 and blown into the housing 12 of the solid fuel combustion system 2. The ambient air blower 32 is disposed in an inlet opening 36 of the housing 12. Within the housing 12, therefore, there is an overpressure relative to the surroundings of the solid fuel firing system 2.
    The ambient air is blown through the cold side of the heat exchanger 6 and heated there with heat from the hot side. It then flows around the combustion chamber 4 and is further heated there before it is blown through an outlet opening 34 of the housing 12 as warm air into the environment. The heated ambient air blown out of the outlet opening 34 is available with a maximum rated output of 50 kW, for example for drying the building. The combustion chamber 4 is cooled by the cooling air flow, so that its outside temperature remains relatively cool and suitable for mobile use.
    FIG 2 shows the combustion chamber 4 and the heat exchanger 6 in a more detailed, but still schematic way. The combustion chamber 4 is opened for better understanding to the viewer, so that the interior of the combustion chamber 4 is visible. The combustion chamber 4 is part of a solid fuel burner 38 having at the bottom an ash tray 40 for collecting the ash, the delivery unit 22, a primary air supply 42 with a not shown primary air blower, a combustion bottom 44 in the form of a burner plate, a secondary air supply 46, a deflection unit 48 and a combustion chamber ceiling 50 has. The combustion chamber 4 itself is lined with Brennkammersteinen 52, which are designed as firebricks. Below the combustion chamber ceiling 50 of the flue gas vent 54 is positioned, which opens into a flue gas discharge 56 to the heat exchanger 6 out.
    The combustion chamber 4 is divided into four areas: the upper flue gas vent 54, an upper combustion chamber space 58, a lower combustion chamber space 60 and a subspace 62 which is below the combustion floor 44 and above the ash container 40. The boundary between the two combustion chamber spaces 58, 60 is indicated in FIG. 2 by a dashed line.
    FIG. 3 shows the combustion chamber 4 from FIG. 2 with the combustion chamber ceiling 50 removed from above. Shown are the combustor bricks 52 within a combustor housing 64, the deflector 48, the secondary air supplies 46, and small sections of the conveyor unit 22 and the primary air supply 42, respectively.
    The deflection unit 48 is designed as a multi-part sheet with a hexagonal central region and six outer plates welded thereto, which together form an intermediate ceiling within the combustion chamber 4. The deflection unit 48 has a roof shape that is concavely curved downwards, the central region being arranged horizontally and the six side parts inclined slightly downwards. The deflection unit 48 is held by three support elements 66 which protrude over a series of combustion chamber bricks 52, embrace them outwardly, so that they are hung over these combustion bricks 52, as can be seen from the two front support elements 66 of FIG. With the deflection 48, the support members 66 are welded.
    Between the combustion chamber wall 68, which is formed in this embodiment by the combustor bricks 52 and the combustion chamber housing 64, and the edge 70 of the deflector 48 is an annular gap 72, the average gap width less than 20% of the clear diameter of the combustion chamber 4 within the combustion chamber wall 68 is less than 25% of the diameter of the deflection 48, also seen in the direction of the gap width. The deflection unit 48 obstructs approximately 50% of the free cross section of the combustion chamber 4 between the two combustion chamber spaces 58, 60. The annular gap 72, as well as the edge 70, run around the deflection unit 48 without interruption. The deflection unit 48 is central in the clear space of the combustion chamber 4, wherein this central arrangement can be seen in the horizontal direction.
    The combustion chamber 4 with its combustion chamber wall 68 has a polygonal geometry, which is simulated by the deflection unit 48. Again, this is polygonal with the same number of corners formed, in this case, six by the hexagonal geometry, the corners of the deflector 48 are indeed cut off a bit, yet in the corners of the combustion chamber 4 point.
    The five inlet nozzles of the secondary air supply 46 are arranged in the lower row of the two rows of combustion chamber bricks 52. They are not centered in particular somewhat obliquely aligned with the combustion chamber axis, so that the secondary air irradiated by them forms a vortex 82, in the embodiment shown in FIG 4 counterclockwise. The primary air is guided from below through the primary air supply 42 into a chamber 74 below the combustion bottom 44 and flows through openings in the combustion bottom 44 to the solid fuel 20 lying on the combustion bottom 44.
    As can be seen from FIG 2, the deflection unit 48 is disposed vertically above the Brennbo-dens 44, wherein the edge 70 extends radially beyond the edge of the combustion bottom 44. The firing bottom 44 is surrounded all around by a depression which is arranged below the edge 70 of the deflection unit 48. The depression is arranged between the radially outer edge of the combustion bottom 44 and the combustion chamber wall 68 and in the form of an annular gap, into which fuel combusted on the combustion bottom 44, which is pressed radially outward beyond the edge of the combustion bottom 44, can fall downwards. As the depression opens down into the ash collecting unit 40, the ash from the burning floor falls directly into the ash collecting unit 40.
    During operation of the solid fuel combustion system 2 solid fuel 20 is conveyed from below through the central opening of the combustion bottom 44 by the feed unit 22, so that the solid fuel comes to rest on the hearth 44. With the aid of a not shown ignition unit, the solid fuel 20 is ignited and begins to burn, as indicated by the flames in FIG. 2 and FIG. The primary air blower blows ambient air through the primary air duct 42 into the lower chamber 74 and thence through holes in the combustion bottom 44 into the burning solid fuel 20, so that the fire is ignited. The resulting from the combustion hot flue gases rise and are mixed by means of the secondary air supply 46 with other combustion air, so that at the level of the secondary air supply 46, an afterburning of the hot flue gases takes place.
    During combustion, burnt solid fuel 20 accumulates in the form of ash on the combustion floor 44. Due to the increasingly swelling current of new solid fuel 20, the ash is pressed radially outward and falls over the radially outer edge of the combustion bottom 44 down through the depression or the annular gap around the firing bottom 44 in the ash container 40. There, the ash collects 80 and can be removed from the ash container 40 after the end of the operation.
    As indicated in FIG. 4, the hot flue gases 76 rise under the deflection unit 48 and into the downwardly curved concave space of the deflection unit 48. There, they are laterally and again deflected a little way down until they flow around the outer edge 70 upwards, as indicated on the right side of FIG 4. The flue gases 76 take there an S-shaped path with two kinks before they flow to above and into the flue gas vent 54. Fly ash 78 is thrown outwards by its inertia in the upward bend of the flue gas path and sinks downwardly at the outer edge of combustion chamber 4 and lower combustion chamber space 60, respectively, as shown by the dashed arrows. This descent is facilitated by a downward flow prevailing at the edge of the lower combustion chamber space 60, which is created by the upwardly prevailing upward flows and the deflection unit 48, favored by the externally cooled combustion chamber wall 68. Through the depression or the gap around the combustion chamber bottom 44, the fly ash 78 sinks down into the ash container 40 to the ash 80 lying there.
    By the incoming during operation secondary air through the secondary air supply 46, the vortex formation of the flue gases 76 is favored below the deflection unit 48, as indicated on the left side of FIG 4. The vortex is generated by the concave shape downwardly directed flue gas flow on the one hand and by the secondary air feed 46 on the other hand, is blown through the air in the lower combustion chamber space 60 below the downward flue gas flow. In this case, the vortex 82 is situated so that the air radiated through the secondary air feed 46 is introduced into the combustion chamber 4 at an acute angle to the lower edge of the vortex 82. The air thus flows in the same direction as the vortex 82 in this region, so that the vortex formation is strengthened. From the vortex 82 fly ash 78 is thrown radially outward and falls down the edge of the lower combustion chamber space 60 and the Brennkammerwandung 68 down through the recess or the annular gap around the combustion chamber bottom 44 and reaches the ash container 40th
    By deflecting 48, the rising flue gases 76 are deflected down again so that they dwell longer in the combustion chamber 4, as without the deflector 48. In addition, the flue gases 76 are directed into the space of the afterburning, which determined by the secondary air supply 46 is. As a result, the flue gases 76 directed downwards again by the deflection unit 48 are again fed to the afterburning zone, so that a renewed afterburning and thus a very good combustion of the combustible gas fraction in the flue gas 76 is achieved. The combustion is thereby very complete and pollutant poor.
    In addition, can be achieved by the high residence time of the hot flue gases in the lower combustion chamber 60 there a very high temperature, favored by the Brennkammersteinauskleidung the combustion chamber 4, in particular the lower combustion chamber 60. This also favors the combustion, so they very complete and can be done with little material poor. Overall, a comparatively small combustion chamber 4 can thus produce a very good and very hot combustion, which is otherwise only possible with larger combustion chambers 4. In this way, the combustion chamber 4 can be kept very compact, which space and weight can be saved, which in particular the mobility of the mobile solid fuel burning plant 2 benefits.
    Due to the very good separation of fly ash 78 from the flue gas 76, a very pure exhaust gas flow in the flue gas discharge 28 can be achieved out of the solid fuel burning plant 2, so that the environment of the solid fuel burning plant 2 is little polluted by fly ash. This makes it suitable to be used in pollution-sensitive environments. Furthermore, the separation of the fly ash 78 from the flue gas 76 within the combustion chamber 4 has the advantage that less fly ash is collected within the heat exchanger 6, in particular in a lower ash container 84 below the heat exchanger 6. As a result, the cleaning of the heat exchanger 6 is facilitated. REFERENCE LIST 2 Solid Fuel Firing System 4 Combustion Chamber 6 Exchanger Housing 14 Wheel 16 Swing Mechanism 18 Handle 20 Solid Fuel 22 Delivery Unit 24 Exhaust Path 26 Flue Gas Blower 28 Flue Gas Removal 30 Cooling Air Path 32 Ambient Air Blower 34 Outlet Opening 36 Inlet 38 Solid Fuel Burner 40 Ash Tray 42 Primary Air Feed 44 Burning Tray 46 Secondary Air Feed 48 Deflection Unit 50 Combustor ceiling 52 Combustor block 54 Flue gas vent 56 Flue gas outlet 58 Upper combustion chamber space 60 Lower combustion chamber space 62 Lower space 64 Combustor housing 66 Support element 68 Combustion chamber wall 70 Edge 72 Annular gap 74 Chamber 76 Flue gas 78 Fly ash 80 Ash 82 Vortex 84 Ash container
    权利要求:
    Claims (17)
    [1]
    claims
    1. Mobile solid fuel combustion system (2) with a heat exchanger (6), a solid fuel burner (38), a combustion chamber (4) with a combustion bottom (44) and an overlying flue gas outlet (54) in a flue gas discharge (56) to the hot side of Heat exchanger (6) opens, and with an ambient air duct with a blower (32) for driving ambient air through the cold side of the heat exchanger (6), characterized in that the combustion chamber (4) above the combustion bottom (44) arranged deflecting unit (48) comprising the combustion chamber (4) in an upper and a lower combustion chamber space (58, 60) and at least 25% of the free cross section of the combustion chamber (4) between the combustion chamber spaces (58, 60) blocks.
    [2]
    2. Mobile solid fuel burning plant (2) according to claim 1, characterized in that the deflection unit (48) is arranged vertically above the firing floor (44).
    [3]
    3. Mobile solid fuel combustion system (2) according to claim 1 or 2, characterized in that the deflection unit (48) in the form of an intermediate ceiling between the two combustion chamber spaces (58, 60) is arranged.
    [4]
    4. Mobile solid fuel combustion system (2) according to any one of the preceding claims, characterized in that the deflection unit (48) is arranged axially centrally in the combustion chamber (4).
    [5]
    5. Mobile solid fuel combustion system (2) according to any one of the preceding claims, characterized in that the combustion chamber (4) and the deflection unit (48) have a polygonal geometry with more than four corners.
    [6]
    6. Mobile solid fuel firing system (2) according to any one of the preceding claims, characterized in that the deflection unit (48) over a circumferential region of at least 360 ° flow around.
    [7]
    7. Mobile solid fuel combustion system (2) according to one of the preceding claims, characterized in that between the combustion chamber wall (68) and the deflection unit (48) an annular gap (72) is arranged whose width is less than 50% of the diameter of the deflection unit (48). in the direction of the gap width.
    [8]
    8. Mobile solid fuel firing system (2) according to any one of the preceding claims, characterized in that the deflection unit (48) has a downwardly directed concave shape.
    [9]
    9. Mobile solid fuel firing system (2) according to one of the preceding claims, characterized in that the deflection unit (48) has a sheet metal, which can be flowed around from above and below by flue gas (76).
    [10]
    10. Mobile solid fuel combustion system (2) according to any one of the preceding claims, characterized in that the combustion chamber (4) has a lining with Brennkammersteinen (52) and the deflection unit (48) is fixed to Brennkammersteinen (52).
    [11]
    11. Mobile solid fuel firing system (2) according to any one of the preceding claims, characterized in that the combustion chamber (4) has a lining with Brennkammersteinen (52) and the deflection unit (48) is mounted on a combustion chamber brick (52).
    [12]
    12. Mobile solid fuel firing system (2) according to any one of the preceding claims, characterized in that the firing bottom (44) is surrounded by a recess around, which is located below the edge of the deflection unit (48).
    [13]
    13. Mobile solid fuel burning plant (2) according to claim 12, characterized in that the depression opens down into an ash collecting unit (40).
    [14]
    14. Mobile solid fuel firing system (2) according to one of the preceding claims, characterized in that the firing bottom (44) is a firing plate with a central opening into which opens a fuel supply.
    [15]
    15. Mobile solid fuel firing system (2) according to any one of the preceding claims, characterized in that the combustion chamber (4) has a lateral secondary air supply (46) and the deflection unit (48) above the secondary air supply (46) is arranged.
    [16]
    16. Mobile solid fuel combustion system (2) according to any one of the preceding claims, characterized in that the combustion chamber (4) has a secondary air supply (46) and the deflection unit (48) is arranged to the secondary air supply (46) that the secondary air supply (46) Rated load operation radiates combustion air into a flue gas vortex (82) generated by the deflection unit (48).
    [17]
    17. Mobile solid fuel combustion system (2) according to any one of the preceding claims, characterized in that the combustion chamber (4) has a secondary air supply (46) having a plurality of Einstrahlelementen which are aligned obliquely to the combustion chamber axis in such a way that the secondary air irradiated by them a vortex (82) forms. For this 2 sheets of drawings
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    同族专利:
    公开号 | 公开日
    DE202014105041U1|2014-10-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP3163162B1|2015-10-30|2020-07-15|LASCO Heutechnik GmbH|Mobile radiant heater|
    法律状态:
    2019-08-15| MM01| Lapse because of not paying annual fees|Effective date: 20181231 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE201420105041|DE202014105041U1|2014-10-21|2014-10-21|Mobile solid fuel firing system|
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