Split type biomass hot blast stove

Abstract

The utility model relates to the technical field of hot-blast stoves, in particular to a split type biomass hot-blast stove which comprises a stove body, a combustion chamber arranged in the stove body, a heat transfer assembly, a filter cartridge and an exhaust port, and a first feeding port used for feeding biomass particles and a second feeding port used for adding traditional fuel are formed in the two sides of the lower portion of the combustion chamber correspondingly. The first feeding port and the second feeding port both communicate with the combustion chamber, and the heat transfer assembly exhausts hot air generated in the combustion chamber from the exhaust port through the filter cartridge. According to the split type biomass hot-blast stove, biomass particles can be placed in the combustion chamber through the first feeding opening to be combusted, pollution generated by biomass combustion is small, energy conservation and emission reduction are achieved, and pollution is reduced; and meanwhile, other fuels can be put into the combustion chamber through the second feeding hole, so that the combustion reaction in the combustion chamber is intensified, and the efficiency of the hot-blast stove is improved.

Description

Technical Field

[0001] This application relates to the field of hot blast stove technology, specifically to a split-type biomass hot blast stove. Background Technology

[0002] Hot air furnaces have wide applications in people's production and daily life. They work by using the heat released from fuel combustion to heat air through high-temperature flue gas, bringing the air temperature to the required standard for use in fields such as domestic heating, industrial production, thermosetting, and grain drying. Currently, hot air furnaces typically use coal as fuel; however, coal combustion causes significant environmental pollution.

[0003] In order to achieve energy conservation, emission reduction and pollution reduction, this application can provide a split-type biomass hot air furnace to solve the above problems. Utility Model Content

[0004] In order to achieve energy conservation, emission reduction and less pollution, this application provides a split-type biomass hot air furnace.

[0005] The technical solution for a split-type biomass hot air furnace provided in this application is as follows:

[0006] A split-type biomass hot air furnace includes a furnace body, a combustion chamber disposed within the furnace body, a heat transfer component, a filter cartridge, and an exhaust port. The lower part of the combustion chamber has a first feed port for feeding biomass pellets and a second feed port for adding conventional fuel on both sides. Both the first feed port and the second feed port are connected to the combustion chamber. The heat transfer component discharges the hot air generated in the combustion chamber through the filter cartridge and out of the exhaust port.

[0007] Furthermore, the bottom of the combustion chamber is provided with ventilation holes, including a first ventilation zone and a second ventilation zone arranged concentrically from the center outwards. The first ventilation zone is kept in a ventilation state, and the second ventilation zone can be set to a ventilation state or a closed state.

[0008] Furthermore, the split-type biomass hot air furnace includes a first ventilation duct and a second ventilation duct, wherein the first ventilation duct is connected to the first ventilation zone and the second ventilation duct is connected to the second ventilation zone.

[0009] Furthermore, the first ventilation duct includes a first ventilation chamber located below the combustion chamber, a first air inlet opened on the side of the first ventilation chamber, and a vertical branch pipe adapted to the first ventilation area, wherein the vertical branch pipe connects the first ventilation chamber and the first ventilation area.

[0010] Furthermore, the second ventilation duct includes a second ventilation chamber located between the combustion chamber and the first ventilation chamber and a second air inlet opened on the side of the second ventilation chamber. The second ventilation chamber has a top surface communicating with the second ventilation area, and the second ventilation chamber is provided with a through hole to accommodate the vertical branch pipe passing through.

[0011] Furthermore, a baffle plate is provided inside the second air inlet, and the baffle plate is connected to a control component, which controls the baffle plate to close or open the second air inlet.

[0012] Furthermore, the heat transfer assembly includes a first heat transfer tube, a first heat-gathering chamber, a second heat transfer tube, a second heat-gathering chamber, and a third heat transfer tube. The first heat-gathering chamber is located at the bottom of the furnace body and behind the combustion chamber. The first heat transfer tube connects the combustion chamber and the first heat-gathering chamber. The second heat-gathering chamber is located above the first heat-gathering chamber. The second heat transfer tube connects the first heat-gathering chamber and the second heat-gathering chamber. The filter cartridge is located on the side of the combustion chamber. The third heat transfer tube connects the second heat-gathering chamber and the filter cartridge.

[0013] Furthermore, the two ends of the first heat transfer tube are respectively connected to the upper part of the combustion chamber and the top of the first heat-gathering chamber, and the two ends of the second heat transfer tube are respectively connected to the top of the first heat-gathering chamber and the bottom of the second heat-gathering chamber.

[0014] Furthermore, there are multiple second heat transfer tubes, and these multiple second heat transfer tubes are evenly spaced.

[0015] Furthermore, the first heat-gathering chamber is equipped with an ash-cleaning port for cleaning furnace ash.

[0016] Beneficial effects achieved:

[0017] The split-type biomass hot air furnace disclosed in this application can place biomass pellets into the combustion chamber for combustion through the first feed port, resulting in less pollution from biomass combustion, thereby achieving energy saving, emission reduction, and pollution reduction; at the same time, it can place other fuels into the combustion chamber through the second feed port, thereby intensifying the combustion reaction in the combustion chamber and improving the efficiency of the hot air furnace. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the first ventilation zone and the second ventilation zone according to an embodiment of this application;

[0020] Figure 3 This is a cross-sectional view of a ventilation chamber according to an embodiment of this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Combustion chamber; 2. First feed inlet; 3. Second feed inlet; 4. First ventilation zone; 5. Second ventilation zone; 6. Ventilation chamber; 7. First air inlet; 8. First ventilation chamber; 9. Vertical branch pipe; 10. Second air inlet; 11. Second ventilation chamber; 12. First heat transfer pipe; 13. First heat concentration chamber; 14. Second heat transfer pipe; 15. Second heat concentration chamber; 16. Third heat transfer pipe; 17. Filter cartridge; 18. Exhaust port. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] This application discloses a split-type biomass hot air furnace.

[0027] Please refer to Figure 1-3A split-type biomass hot air furnace includes a furnace body (not shown in the figure), a combustion chamber 1, a heat transfer assembly, a filter cylinder 17, and an exhaust port 18. The combustion chamber 1, the heat transfer assembly, and the filter cylinder 17 are disposed within the furnace body. The exhaust port 18 is connected to the top of the filter cylinder 17 and extends beyond the furnace body surface. The hot air generated in the combustion chamber 1 is filtered within the filter cylinder 17 by the heat transfer assembly and finally discharged through the exhaust port 18. The combustion chamber 1 is cylindrical, with a first feed inlet 2 for feeding biomass pellets on its lower front side and a second feed inlet 3 for feeding traditional fuels such as firewood and coal on its right side. Biomass pellets and traditional fuels can burn together at the bottom of the combustion chamber 1. The first feed inlet 2 is circular and can be connected to a biomass discharge bin via a circular pipe. The second feed inlet 3 can be rectangular, allowing larger pieces of firewood or coal to be placed into the combustion chamber 1. The second feed inlet 3 can also serve as an ignition port for igniting the fuel in the combustion chamber 1. Workers place biomass pellets into the combustion chamber 1 through the first feed inlet 2, and put conventional fuel into the combustion chamber 1 through the second feed inlet 3 and ignite it. The two fuels generate hot gas in the combustion chamber 1, thus achieving the effect of using biomass fuel and conventional fuel.

[0028] In practice, the split-type biomass hot air furnace disclosed in this application can be connected to other equipment, such as a dryer, through the exhaust port. This split design allows the hot air furnace to be applied more flexibly in multiple scenarios; and it also allows for more flexible handling should a malfunction occur.

[0029] In one embodiment of this application, optionally, the bottom of the combustion chamber 1 has multiple through holes, including a first ventilation zone 4 and a second ventilation zone 5 concentrically arranged from its center outwards. That is, the first ventilation zone 4 is circular, and the second ventilation zone 5 is annular. The first ventilation zone 4 can be kept in a ventilation state, and the second ventilation zone 5 can be set to a ventilation state or a closed state. When the second ventilation zone 5 is set to a ventilation state, both the first ventilation zone 4 and the second ventilation zone 5 will play a ventilation role, and outside air will enter the combustion chamber 1 through the first ventilation zone 4 and the second ventilation zone 5, which can intensify the combustion of fuel and improve the combustion efficiency. When the second ventilation zone 5 is set to a closed state, only the first ventilation zone 4 can be ventilated, and the unburned fuel in its middle can be injected higher, so that the fuel can be fully burned.

[0030] Specifically, the biomass hot air furnace includes a first ventilation pipe and a second ventilation pipe. A ventilation chamber 6 is located below the combustion chamber 1, and the ventilation chamber 6 includes a first ventilation chamber 8 and a second ventilation chamber 11. A first air inlet 7 is provided on the side of the first ventilation chamber 8, and a vertical branch pipe 9 is connected to the top of the first ventilation chamber 8. The vertical branch pipe 9 connects upwards to the first ventilation area 4, and the cross-sectional shape of the vertical branch pipe 9 is the same as that of the first ventilation area 4. The aforementioned first air inlet 7 and the vertical branch pipe 9 of the first ventilation chamber 8 constitute the first ventilation pipe and communicate with the first ventilation area 4. The second ventilation chamber 11 is located between the combustion chamber 1 and the first ventilation chamber 8. A second air inlet 10 is provided on the side of the second ventilation chamber 11, and the second ventilation chamber 11 has an unsealed top surface adapted to the second ventilation area 5. The vertical branch pipe 9 passes through the second ventilation chamber 11 and connects to the first ventilation area 4. The aforementioned second air inlet 10 and second ventilation chamber 11 constitute a second ventilation duct, connected to the second ventilation zone 5. This can be understood as follows: the top surface of the second ventilation chamber 11 has a circular through-hole adapted to the outer diameter of the second ventilation zone 5, and the bottom surface of the second ventilation chamber 11 has a circular through-hole adapted to the outer diameter of the vertical branch pipe 9. The vertical branch pipe 9 passes through the circular through-holes on the bottom and top surfaces of the second ventilation chamber 11 from bottom to top, connecting to the first ventilation zone 4. This allows outside air to enter the combustion chamber 1 via the first air inlet 7, the first ventilation chamber 8, the vertical branch pipe 9, and the first ventilation zone 4, and also via the second air inlet 10, the second ventilation chamber 11, and the second ventilation zone 5. The first and second ventilation ducts are independent of each other; by controlling the opening and closing state of the second ventilation duct, the fire intensity within the combustion chamber 1 can be adjusted.

[0031] A wind deflector can be installed inside the second air inlet 10. The wind deflector is connected to a control component, which can control the wind deflector to block or avoid the second air inlet 10, thereby controlling the ventilation of the second ventilation zone 5. In one embodiment shown in the figure, the control component is a control handle. Rotating the control handle causes the wind deflector to rotate within the second air inlet 10. By controlling the rotation angle of the wind deflector, the air intake volume can be adjusted.

[0032] After the hot blast stove is used, the vent at the bottom of the combustion chamber can also be used as an ash discharge hole. The ash produced by the fuel can be discharged from the combustion chamber 1 through the vent to prevent the ash from occupying the space inside the combustion chamber 1 and affecting the combustion effect. In a preferred embodiment based on this, ash cleaning ports can be provided on the sides of the first ventilation chamber 8 and the second ventilation chamber 11 to facilitate timely cleaning of the ash.

[0033] In one embodiment of this application, optionally, the heat transfer assembly includes a first heat transfer pipe 12, a first heat-gathering chamber 13, a second heat transfer pipe 14, a second heat-gathering chamber 15, and a third heat transfer pipe 16. The first heat-gathering chamber 13 is located behind the combustion chamber 1, the first heat transfer pipe 12 connects the combustion chamber and the first heat-gathering chamber 13, the second heat-gathering chamber 15 is located above the first heat-gathering chamber 13, the second heat transfer pipe 14 connects the first heat-gathering chamber 13 and the second heat-gathering chamber 15, the filter cartridge 17 is located on the side of the combustion chamber 1, and the third heat transfer pipe 16 connects the second heat-gathering chamber 15 and the filter cartridge 17. The hot gas generated in the combustion chamber 1 passes sequentially through the first heat transfer pipe 12, the first heat-gathering chamber 13, the second heat transfer pipe 14, the second heat-gathering chamber 15, and the third heat transfer pipe 16 to reach the filter cartridge 17, and is discharged from the exhaust port 18 after filtration. During this process, because hot air of varying temperatures is generated during combustion, the heat transfer components can extend the heat transfer time. As the hot air passes through the first heat-gathering chamber 13 and the second heat-gathering chamber 15, it accumulates in the first heat-gathering chamber 13, making the temperature of the hot air more uniform. The uniformly heated hot air then enters the second heat-gathering chamber 15 for further homogenization, thus obtaining the stable hot air required by the hot air furnace. Furthermore, some of the floating ash produced during combustion can settle down during this process, reducing impurities in the hot air. To facilitate the cleaning of floating ash, the first heat-gathering chamber 13 can be equipped with a cleaning port. Moreover, due to the relatively large volume of the first heat-gathering chamber 13, multiple cleaning ports can be provided on its side for comprehensive cleaning.

[0034] Furthermore, since hot air has a lower density than cold air, it will rise. In order to ensure that the hot air can flow better in the heat transfer tube, the first heat transfer tube 12 can be a bent tube, with one end connected to the upper part of the combustion chamber 1 and the other end connected to the top of the first heat-gathering chamber 13; the second heat transfer tube 14 can be a vertical straight tube, with one end connected to the top of the first heat-gathering chamber 13 and the other end connected to the bottom of the second heat-gathering chamber 15.

[0035] Furthermore, multiple second heat transfer tubes 14 can be configured, and these multiple second heat transfer tubes 14 are evenly spaced. By configuring multiple second heat transfer tubes 14 with relatively small inner diameters, the outflow rate of hot gas in the first heat-gathering chamber 13 can be made less than the outflow velocity, thereby ensuring the flow of hot gas while allowing relatively more hot gas to accumulate in the first heat-gathering chamber 13 to achieve the purpose of uniform temperature. Similarly, the inner diameter of the third heat transfer tube 16 can be smaller than the inner diameter of the first heat transfer tube 12.

[0036] In one embodiment of this application, optionally, multiple filter screens may be arranged inside the filter cylinder 17 from top to bottom to ensure that clean hot air is ultimately obtained. Optionally, the lower part of the filter cylinder 17 may be provided with an ash removal port for cleaning furnace ash.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A split-type biomass hot air furnace, characterized in that, The furnace includes a furnace body, a combustion chamber disposed within the furnace body, a heat transfer assembly, a filter cartridge, and an exhaust port. The lower part of the combustion chamber has a first feed port for feeding biomass pellets and a second feed port for adding conventional fuel on both sides. Both the first feed port and the second feed port are connected to the combustion chamber. The heat transfer assembly discharges the hot gas generated in the combustion chamber through the filter cartridge and from the exhaust port.

2. The split-type biomass hot air furnace according to claim 1, characterized in that, The bottom of the combustion chamber is provided with ventilation holes, including a first ventilation zone and a second ventilation zone arranged concentrically from the center outwards. The first ventilation zone is kept in a ventilation state, and the second ventilation zone can be set to a ventilation state or a closed state.

3. The split-type biomass hot air furnace according to claim 2, characterized in that, The furnace body is provided with a first ventilation pipe and a second ventilation pipe that connect to the outside of the furnace body. The first ventilation pipe is connected to the first ventilation area, and the second ventilation pipe is connected to the second ventilation area.

4. The split-type biomass hot air furnace according to claim 3, characterized in that, The first ventilation duct includes a first ventilation chamber located below the combustion chamber, a first air inlet opened on the side of the first ventilation chamber, and a vertical branch pipe adapted to the first ventilation area. The vertical branch pipe connects the first ventilation chamber and the first ventilation area.

5. The split-type biomass hot air furnace according to claim 4, characterized in that, The second ventilation duct includes a second ventilation chamber located between the combustion chamber and the first ventilation chamber and a second air inlet opened on the side of the second ventilation chamber. The second ventilation chamber has a top surface communicating with the second ventilation area, and the second ventilation chamber is provided with a through hole to accommodate the vertical branch pipe passing through.

6. The split-type biomass hot air furnace according to claim 5, characterized in that, The second air inlet is provided with a baffle plate, and the baffle plate is connected to a control component, which controls the baffle plate to close or open the second air inlet.

7. The split-type biomass hot air furnace according to claim 1, characterized in that, The heat transfer assembly includes a first heat transfer tube, a first heat-gathering chamber, a second heat transfer tube, a second heat-gathering chamber, and a third heat transfer tube. The first heat-gathering chamber is located at the bottom of the furnace body and behind the combustion chamber. The first heat transfer tube connects the combustion chamber and the first heat-gathering chamber. The second heat-gathering chamber is located above the first heat-gathering chamber. The second heat transfer tube connects the first heat-gathering chamber and the second heat-gathering chamber. The filter cartridge is located on the side of the combustion chamber. The third heat transfer tube connects the second heat-gathering chamber and the filter cartridge.

8. The split-type biomass hot air furnace according to claim 7, characterized in that, The two ends of the first heat transfer tube are respectively connected to the upper part of the combustion chamber and the top of the first heat-gathering chamber, and the two ends of the second heat transfer tube are respectively connected to the top of the first heat-gathering chamber and the bottom of the second heat-gathering chamber.

9. The split-type biomass hot air furnace according to claim 8, characterized in that, There are multiple second heat transfer tubes, and the multiple second heat transfer tubes are evenly spaced.

10. The split-type biomass hot air furnace according to claim 8, characterized in that, The first heat-gathering chamber is equipped with an ash-cleaning port for cleaning furnace ash.

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