An energy-saving biomass pellet hot air furnace

Abstract

This invention discloses an energy-saving biomass pellet hot air furnace, relating to the field of hot air furnace technology. It includes a feeding box, a heating chamber installed on one side of the feeding box, a furnace assembly and a heating chamber inside the heating box, and an air supply assembly installed on one side of the heating box. A heat exchange assembly is installed in the heating chamber and connected to the air supply assembly. A smoke chamber is located inside the heating box and contains multiple filter bag assemblies. A smoke purification assembly is installed on one side of the heating box and connected to the exhaust port of the heating box. This invention designs multiple heat exchange modules and heats and cools the airflow at different stages, significantly improving the overall thermal efficiency of the hot air furnace. By optimizing the heat exchange process, energy waste is minimized, and energy utilization is improved while ensuring system stability.

Description

Technical Field

[0001] This invention relates to the field of hot air furnace technology, specifically to an energy-saving biomass pellet hot air furnace. Background Technology

[0002] In recent years, my country has vigorously promoted the comprehensive utilization of renewable energy, encouraged the development of biomass energy, and increased its efforts to promote its utilization, thereby promoting the research and development and manufacturing of biomass pellet hot air furnaces. As a result, some biomass pellet furnace manufacturers have emerged.

[0003] Miniaturization of hot blast stoves is one of the directions of hot blast stove development. They have advantages such as small size, light weight, and easy movement and installation. They are widely used in scenarios that require fast and flexible heat sources. However, due to their relatively small power, the temperature and pressure of the exhaust gas are relatively high, and the demand for flue gas treatment is more urgent.

[0004] A search revealed a Chinese patent (publication number: CN214809574U) that discloses a smoke treatment device. The patent includes a filter box, an air inlet pipe at the end of the filter box away from the ground, a connecting pipe at the end of the filter box away from the air inlet pipe, a suction fan at the end of the connecting pipe away from the filter box, an air outlet pipe at the end of the suction fan away from the connecting pipe, and a filter element detachably connected to the filter box.

[0005] Traditional hot air furnace smoke purification equipment is usually complex in design, requires a large installation space, and has high requirements for operation and maintenance. These characteristics often lead to problems such as high cost, inconvenient operation, and difficult maintenance for small hot air furnace smoke treatment systems. Therefore, this invention proposes an energy-saving biomass pellet hot air furnace. Summary of the Invention

[0006] The purpose of this invention is to provide an energy-saving biomass pellet hot air furnace to solve the problems mentioned in the background art.

[0007] The present invention can be achieved through the following technical solution: an energy-saving biomass pellet hot air furnace, comprising a feeding box, a heating box and a smoke purification component, wherein the feeding box is connected to the heating box and the inside of the feeding box is provided with a feeding structure for conveying biomass fuel and combustion-supporting gas to the heating box;

[0008] The heating box is equipped with a furnace assembly and a heating chamber. The heating chamber is equipped with a heat exchange assembly. The furnace assembly heats the heat exchange assembly based on the biomass fuel conveyed by the feed box.

[0009] Furthermore, the side of the heating box is equipped with multiple dust removal ports, smoke exhaust ports, air outlets and air supply components. The air outlet of the heat exchange component is connected to the air outlet to deliver hot air out of the heating box.

[0010] The heating chamber is equipped with a smoke chamber located on one side of the furnace assembly and the heating chamber. The bottom of the smoke chamber is connected to the flue gas outlet, and the top of the smoke chamber is connected to the heating chamber. An active valve structure is built into the connection part to control the connection state between the smoke chamber and the heating chamber, thereby controlling the path of the smoke flow.

[0011] Furthermore, the smoke chamber is equipped with multiple filter bag assemblies;

[0012] The air outlet of the air supply component is connected to the air inlet of the heat exchange component, and is used to transport the gas to be heated to the heat exchange component for heating.

[0013] When in use, the smoke purification component is installed on one side of the heating box, and the smoke inlet of the smoke purification component is connected to the smoke outlet of the heating box, and the smoke enters the smoke purification component through the smoke outlet;

[0014] The smoke purification assembly includes a spiral tube, an assembly tube, and a purification chamber, wherein the assembly tube is used to connect to the exhaust port of the heating chamber;

[0015] The spiral tube includes a spiral inner pipe, and an outer pipe is sleeved on the outside of the inner pipe. The outer pipe is provided with an air inlet and an air outlet, and a flow channel is formed between the outer pipe and the inner pipe. The air inlet and air outlet of the outer pipe are respectively connected to the air supply assembly through a set of connecting pipes to realize the movement of gas in the flow channel.

[0016] The bottom and top of the inner pipe are connected to the assembly pipe and the purification box, respectively. The inner pipe is used to discharge the smoke moving along the assembly pipe into the purification box.

[0017] The direction of movement of the smoke within the inner duct is opposite to the direction of movement of the gas delivered by the air supply assembly between the outer and inner ducts.

[0018] The purification chamber is equipped with a one-way component, a multi-layer catalyst component, and an activated carbon fiber component installed sequentially along the direction of smoke movement. That is, after the smoke enters the purification chamber through the inner pipe, it first passes through the one-way component, then through each layer of catalyst component in sequence, and finally through the activated carbon fiber component to complete the smoke purification.

[0019] A further technical improvement of the present invention is that: the assembly pipe includes a connecting plate, the connecting plate is connected to the smoke inlet of the inner pipe, a folding pipe is installed on the lower side of the connecting plate, and an extension pipe is installed at the bottom of the folding pipe;

[0020] The connecting plate, folded tube, and extension tube are interconnected to facilitate the flow of smoke.

[0021] A further technical improvement of the present invention is that: the one-way component includes a housing, the housing is equipped with a plurality of one-way valve units, and the top of the housing is equipped with a removable reinforcing cover;

[0022] The reinforcing cover is used to secure each one-way valve unit inside the housing;

[0023] Furthermore, both the reinforced cover and the bottom of the box have a hollow structure, which can fix each one-way valve unit without affecting the passage of smoke.

[0024] A further technical improvement of the present invention is that: the one-way valve unit includes a unit column, the unit column adopts a semi-enclosed structure, and a Tesla valve structure is provided inside the unit column;

[0025] Furthermore, the Tesla valve structure within the unit column is connected to its unclosed side;

[0026] When in use, the individual unit columns fit together. The unit column, through the adjacent unit column or box, turns the unsealed side into a sealed state, thereby turning the internal Tesla valve structure into an upper and lower connected state, so that the smoke can pass through along the preset path.

[0027] A further technical improvement of the present invention is that: a recessed area is provided on one side of the top of each unit column, the recessed area is not connected to the Tesla valve structure inside the unit column, and a fixing component is installed inside the recessed area to facilitate the user to remove each unit column from the box for cleaning.

[0028] A further technical improvement of the present invention is that: the activated carbon fiber assembly includes two sets of winding mechanisms, which are respectively installed on both sides inside the purification box. Activated carbon fiber cloth is wound between the winding parts of the two sets of winding mechanisms, wherein the unfolded part of the activated carbon fiber cloth is its usage part, which is used to adsorb smoke when it passes through.

[0029] The hot air furnace presets the usage time for the two sets of winding mechanisms. After the preset usage time is reached, the winding parts of the two sets of winding mechanisms rotate synchronously, and the usage part of the activated carbon fiber cloth wound on the outside is replaced.

[0030] A further technical improvement of the present invention is that the area of ​​the purification box located under the activated carbon fiber cloth is narrowed towards the area where the activated carbon fiber cloth is used, so as to improve the quality of the smoke passing through the activated carbon fiber cloth.

[0031] A further technical improvement of the present invention is that: the heat exchange assembly includes a heat receiving pipe, which is arranged in an inclined manner inside the heating chamber to increase the heat radiation area between the heat receiving pipe and the furnace assembly;

[0032] An air supply pipe is installed at the bottom end of the heated pipe, and the air supply pipe is connected to the air outlet end of the air supply assembly.

[0033] A further technical improvement of the present invention is that: a cooling component is installed inside the smoke chamber on top of each filter bag assembly, the air inlet of the cooling component is connected to the air outlet of the air supply component, the air supply component diverts part of the air to the cooling component when supplying gas, and the air outlet of the cooling component is connected to the heat exchange component.

[0034] Before the smoke comes into contact with each filter bag assembly, it first comes into contact with the cooling assembly to be cooled down;

[0035] The cooling component includes multiple cooling layers, each cooling layer includes multiple parallel tubes, and the tubes at corresponding positions of each cooling layer are vertically distributed along the same axis, that is, each tube is arranged in an array inside the smoke chamber.

[0036] The heating box has a maintenance port at the top of the smoke chamber. When repairing or cleaning the cooling components, the maintenance port can be opened. The tubes arranged in the cooling component array help users extend their tools between the tubes of the cooling components, thus facilitating repair and cleaning.

[0037] A further technical improvement of the present invention is that an exhaust assembly is installed on top of the activated carbon fiber assembly inside the purification chamber. The exhaust assembly is used to exhaust the smoke inside the purification chamber and to provide additional driving force for the smoke.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] This invention designs multiple heat exchange modules and heats and cools the airflow at different stages, significantly improving the overall thermal efficiency of the hot air furnace. By optimizing the heat exchange process, energy waste is minimized, and energy utilization is improved while ensuring system stability.

[0040] Furthermore, by integrating multiple filtration, cooling, and heat exchange modules, the system can effectively remove harmful gases and particulate matter from smoke, significantly reducing pollutant emissions;

[0041] On the other hand, this invention employs a modular design, allowing key components such as heat exchangers and filters to be independently disassembled and maintained. Users can flexibly adjust the system according to actual operating conditions, reducing repair time and downtime costs in case of system failure. Simultaneously, the modular design makes regular cleaning and maintenance more convenient, ensuring long-term efficient system operation. This design also reduces the workload of maintenance personnel and improves the overall system's operational efficiency. Attached Figure Description

[0042] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0043] Figure 1 This is a schematic diagram of the structure of the present invention;

[0044] Figure 2 This is a rear view of the present invention;

[0045] Figure 3 This is a side sectional view of the smoke purification component in Embodiment 1 of the present invention;

[0046] Figure 4 For the present invention Figure 3 Enlarged view of the structure of section A;

[0047] Figure 5 This is a partial structural cross-sectional view of the unidirectional component in this invention;

[0048] Figure 6 This is a schematic diagram of the arrangement of the one-way valve units in this invention;

[0049] Figure 7 This is a side sectional view of the heating box in this invention;

[0050] Figure 8 This is a schematic diagram of the structure of the heat exchange component in this invention;

[0051] Figure 9 This is a side sectional view of the heating box in Embodiment 2 of the present invention;

[0052] Figure 10 This is a side sectional view of the smoke purification component in Embodiment 2 of the present invention;

[0053] In the diagram: 1. Feed box; 2. Heating box; 3. Furnace assembly; 4. Heating chamber; 5. Smoke chamber; 6. Air supply assembly; 7. Smoke purification assembly; 8. Connecting pipe; 9. Heat exchange assembly; 10. Filter bag assembly; 11. Cooling assembly; 71. Spiral tube; 711. Inner pipe; 712. Outer pipe; 72. Assembly pipe; 73. Purification box; 74. Catalyst assembly; 75. Activated carbon fiber assembly; 76. One-way assembly; 761. Box body; 762. One-way valve unit; 763. Reinforcing cover; 77. Exhaust assembly; 91. Heated pipe; 92. Air supply pipe. Detailed Implementation

[0054] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0055] Example 1

[0056] Please see Figure 1-8 As shown, the present invention provides an energy-saving biomass pellet hot air furnace, including a feeding box 1, a heating box 2 and a smoke purification component 7. The feeding box 1 is connected to the heating box 2, and the feeding box 1 is provided with a feeding structure inside for conveying biomass fuel and combustion-supporting gas to the heating box 2.

[0057] The heating box 2 is equipped with a furnace assembly 3 and a heating chamber 4. The heating chamber 4 is equipped with a heat exchange assembly 9. The furnace assembly 3 heats the heat exchange assembly 9 based on the biomass fuel conveyed by the feed box 1.

[0058] Furthermore, the side of the heating box 2 is provided with multiple dust removal ports, smoke exhaust ports, air outlets and air supply components 6. The air outlet of the heat exchange component 9 is connected to the air outlet to deliver hot air out of the heating box 2.

[0059] Inside the heating box 2, on one side of the furnace assembly 3 and the heating chamber 4, there is a smoke chamber 5. The bottom of the smoke chamber 5 is connected to the flue gas outlet, and the top of the smoke chamber 5 is connected to the heating chamber 4. The connection part has an active valve structure built in it to control the connection state between the smoke chamber 5 and the heating chamber 4, thereby controlling the path of the smoke flow.

[0060] Furthermore, the smoke chamber 5 is equipped with multiple filter bag assemblies 10. In this embodiment, the filter bag assemblies 10 are made of high-temperature resistant material. The heating box 2 is located on one side of each filter bag assembly 10, and each is provided with a corresponding maintenance port. When not in use, the maintenance port is sealed with a sealing component to prevent smoke leakage.

[0061] The air outlet of the air supply assembly 6 is connected to the air inlet of the heat exchange assembly 9, and is used to deliver the gas to be heated to the heat exchange assembly 9 for heating.

[0062] When in use, the smoke purification component 7 is installed on one side of the heating box 2, and the smoke inlet of the smoke purification component 7 is connected to the smoke outlet of the heating box 2. The smoke enters the smoke purification component 7 through the smoke outlet.

[0063] In this embodiment, the smoke purification component 7 has an extension on its outer side. When assembled with the heating box 2, a corresponding bracket is used to support the extension of the smoke purification component 7, and the bracket is screwed to the heating box 2.

[0064] The smoke purification assembly 7 includes a spiral tube 71, an assembly tube 72, and a purification chamber 73. The assembly tube 72 is used to connect to the exhaust port of the heating chamber 2.

[0065] The spiral tube 71 includes a spiral inner pipe 711, and an outer pipe 712 is sleeved on the outside of the inner pipe 711. The outer pipe 712 is provided with an air inlet and an air outlet, and a flow channel is formed between the outer pipe 712 and the inner pipe 711. The air inlet and air outlet of the outer pipe 712 are respectively connected to the corresponding parts of the air supply assembly 6 through a set of connecting pipes 8, so as to realize the movement of gas in the flow channel.

[0066] The bottom and top of the inner pipe 711 are connected to the assembly pipe 72 and the purification box 73, respectively. The inner pipe 711 is used to discharge the smoke moving along the assembly pipe 72 into the purification box 73.

[0067] The direction of movement of the smoke in the inner duct 711 is opposite to the direction of movement of the gas delivered by the air supply assembly 6 between the outer duct 712 and the inner duct 711.

[0068] Inside the purification chamber 73, a one-way component 76, a multi-layer catalyst component 74, and an activated carbon fiber component 75 are installed sequentially along the direction of smoke movement. That is, after the smoke enters the purification chamber 73 along the inner pipe 711, it first passes through the one-way component 76, then passes through each layer of catalyst component 74 in sequence, and finally passes through the activated carbon fiber component 75 to complete the smoke purification.

[0069] Furthermore, the purification chamber 73 has a cleaning port on one side of the one-way component 76. When in use, the one-way component 76 enters the purification chamber 73 through the cleaning port and is fixed with fasteners. The one-way component 76 also seals the cleaning port to prevent smoke leakage.

[0070] In this embodiment, the activated carbon fiber assembly 75 includes two sets of winding mechanisms, which are respectively installed on both sides inside the purification box 73. Activated carbon fiber cloth is wound between the winding parts of the two sets of winding mechanisms, wherein the unfolded part of the activated carbon fiber cloth is its usage part, used to adsorb smoke when it passes through.

[0071] By pre-setting the usage time for the two sets of winding mechanisms, after the preset usage time is reached, the winding parts of the two sets of winding mechanisms rotate synchronously, and the usage part of the activated carbon fiber cloth wound on the outside is replaced.

[0072] The purification chamber 73 is located in the area below the activated carbon fiber cloth, which narrows towards the area where the activated carbon fiber cloth is used, in order to improve the quality of the smoke passing through the activated carbon fiber cloth.

[0073] Please see Figure 3-4 As shown, the assembly pipe 72 includes a connecting plate, which is connected to the smoke inlet of the inner pipe 711. A folding pipe is installed on the lower side of the connecting plate, and an extension pipe is installed at the bottom of the folding pipe.

[0074] The connecting plate, folded tube, and extension tube are interconnected to facilitate the flow of smoke.

[0075] Furthermore, the extension tube includes a first sliding part connected to the folded tube, and a second sliding part is slidably connected to the outside of the first sliding part. The second sliding part is used to connect to the exhaust port of the heating box 2. At the same time, a sealing component is provided at the contact part of the first sliding part and the second sliding part to prevent smoke from escaping between the first sliding part and the second sliding part.

[0076] Please see Figure 5-6 As shown, the one-way component 76 includes a housing 761, inside which multiple one-way valve units 762 are installed, and a removable reinforcing cover 763 is installed on the top of the housing 761.

[0077] The reinforcing cover 763 is used to secure each one-way valve unit 762 inside the housing 761;

[0078] Furthermore, the bottom of both the reinforced cover 763 and the box 761 has a hollow structure, which can fix each one-way valve unit 762 without affecting the passage of smoke.

[0079] The one-way valve unit 762 includes a unit column, which has a semi-enclosed structure and a Tesla valve structure is installed inside the unit column.

[0080] Furthermore, the Tesla valve structure within the unit column is connected to its unclosed side;

[0081] When in use, the individual unit columns fit together. The unit column, through the adjacent unit column or box 761, turns the unclosed side into a closed state, thereby turning the internal Tesla valve structure into an upper and lower connected state, so that the smoke can pass through along the preset path.

[0082] Each unit column has a recessed area on one side of its top. The recessed area is not connected to the Tesla valve structure inside the unit column, and a fixing part is installed inside the recessed area to facilitate the user to remove each unit column from the box 761 for cleaning.

[0083] When cleaning the one-way component 76, first remove the fastener, then pull the one-way component 76 out of the cleaning port, then separate the reinforcing cover 763 from the housing 761, and pull it out of the housing 761 through the fasteners of each one-way valve unit 762.

[0084] After each one-way valve unit 762 is pulled out, its internal structure is cleaned from its unclosed side.

[0085] Please see Figure 7-8As shown, the heat exchange assembly 9 includes a heat-receiving pipe 91, which is arranged at an angle inside the heating chamber 4 to increase the heat radiation area between the heat exchange assembly 3 and the furnace chamber.

[0086] An air supply pipe 92 is installed at the bottom end of the heating pipe 91, and the air supply pipe 92 is connected to the air outlet end of the air supply assembly 6.

[0087] When using this invention:

[0088] The hot air furnace uses a blower to deliver air into the furnace assembly 3 for combustion support. The air forms a flow path with the smoke purification assembly 7 in the heating box 2, thereby driving the smoke to move along the smoke purification assembly 7.

[0089] The smoke purification component 7 is now assembled with the heating box 2. Then, two sets of connecting pipes 8 are used to connect the air inlet and air outlet of the outer pipe 712 in the smoke purification component 7 to the corresponding parts of the air supply component 6. When the air supply component 6 delivers gas to the heat exchange component 9, some of the gas flows along the flow channel between the outer pipe 712 and the inner pipe 711.

[0090] At the same time, the active valve structure between the smoke chamber 5 and the heating chamber 4 is opened, and the smoke chamber 5 and the heating chamber 4 are connected. The smoke enters the smoke chamber 5 along the connection between the smoke chamber 5 and the heating chamber 4.

[0091] As the smoke moves along the smoke chamber 5, it is filtered multiple times by each filter bag assembly 10. Then the smoke passes through the exhaust port of the heating box 2 and enters the smoke purification assembly 7, and enters the inner pipe 711 of the spiral tube 71 along the assembly pipe 72.

[0092] As the smoke moves along the inner pipe 711, it exchanges heat with the gas in the flow channel, thus achieving cooling.

[0093] The smoke then enters the purification chamber 73, passes through the one-way component 76 and comes into contact with each layer of catalyst components 74, and finally exits the smoke purification component 7 through the activated carbon fiber component 75.

[0094] Example 2

[0095] An energy-saving biomass pellet hot air furnace includes a feeding box 1, a heating box 2, and a smoke purification component 7. The feeding box 1 is connected to the heating box 2, and the feeding box 1 is provided with a feeding structure inside for conveying biomass fuel and combustion-supporting gas to the heating box 2.

[0096] The heating box 2 is equipped with a furnace assembly 3 and a heating chamber 4. The heating chamber 4 is equipped with a heat exchange assembly 9. The furnace assembly 3 heats the heat exchange assembly 9 based on the biomass fuel conveyed by the feed box 1.

[0097] Furthermore, the side of the heating box 2 is provided with multiple dust removal ports, smoke exhaust ports, air outlets and air supply components 6. The air outlet of the heat exchange component 9 is connected to the air outlet to deliver hot air out of the heating box 2.

[0098] Inside the heating box 2, on one side of the furnace assembly 3 and the heating chamber 4, there is a smoke chamber 5. The bottom of the smoke chamber 5 is connected to the flue gas outlet, and the top of the smoke chamber 5 is connected to the heating chamber 4. The connection part has an active valve structure built in it to control the connection state between the smoke chamber 5 and the heating chamber 4, thereby controlling the path of the smoke flow.

[0099] Furthermore, the smoke chamber 5 is equipped with multiple filter bag assemblies 10;

[0100] The air outlet of the air supply assembly 6 is connected to the air inlet of the heat exchange assembly 9, and is used to deliver the gas to be heated to the heat exchange assembly 9 for heating.

[0101] When in use, the smoke purification component 7 is installed on one side of the heating box 2, and the smoke inlet of the smoke purification component 7 is connected to the smoke outlet of the heating box 2. The smoke enters the smoke purification component 7 through the smoke outlet.

[0102] The smoke purification assembly 7 includes a spiral tube 71, an assembly tube 72, and a purification chamber 73. The assembly tube 72 is used to connect to the exhaust port of the heating chamber 2.

[0103] The spiral tube 71 includes a spiral inner pipe 711, an outer pipe 712 is sleeved on the outside of the inner pipe 711, the outer pipe 712 is provided with an air inlet and an air outlet, and a flow channel is formed between the outer pipe 712 and the inner pipe 711, and the air inlet and air outlet of the outer pipe 712 are respectively connected to the air supply assembly 6 through a set of connecting pipes 8.

[0104] The bottom and top of the inner pipe 711 are connected to the assembly pipe 72 and the purification box 73, respectively. The inner pipe 711 is used to discharge the smoke moving along the assembly pipe 72 into the purification box 73.

[0105] The direction of movement of the smoke in the inner duct 711 is opposite to the direction of movement of the gas delivered by the air supply assembly 6 between the outer duct 712 and the inner duct 711.

[0106] Inside the purification chamber 73, a one-way component 76, a multi-layer catalyst component 74, and an activated carbon fiber component 75 are installed sequentially along the direction of smoke movement. That is, after the smoke enters the purification chamber 73 along the inner pipe 711, it first passes through the one-way component 76, then passes through each layer of catalyst component 74 in sequence, and finally passes through the activated carbon fiber component 75 to complete the smoke purification.

[0107] Compared to Embodiment 1, in Embodiment 2, a cooling component 11 is installed on top of each filter bag assembly 10 inside the smoke chamber 5. The air inlet of the cooling component 11 is connected to the air outlet of the air supply assembly 6. When the air supply assembly 6 delivers gas, it diverts some air to the cooling component 11, and the air outlet of the cooling component 11 is connected to the heat exchange assembly 9.

[0108] Before the smoke comes into contact with each filter bag assembly 10, it first comes into contact with the cooling assembly 11 to cool it down.

[0109] The cooling component 11 includes multiple cooling layers, each of which includes multiple parallel tubes, and the tubes at corresponding positions of each cooling layer are vertically distributed along the same axis, that is, each tube is arranged in an array inside the smoke chamber 5.

[0110] The heating box 2 has a maintenance port on the top of the smoke chamber 5. When the cooling component 11 is being repaired or cleaned, the maintenance port is opened. The tubes arranged in the array of the cooling component 11 help the user to extend tools between the tubes of the cooling component 11, thus facilitating repair and cleaning.

[0111] Furthermore, an exhaust assembly 77 is installed on top of the activated carbon fiber assembly 75 inside the purification chamber 73. The exhaust assembly 77 is used to exhaust the smoke inside the purification chamber 73 and provide additional propulsion for the smoke.

[0112] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An energy-saving biomass pellet hot air furnace, comprising a feeding box (1), a heating box (2) installed on one side of the feeding box (1), a furnace assembly (3) and a heating chamber (4) disposed inside the heating box (2), and an air supply assembly (6) installed on one side of the heating box (2), a heat exchange assembly (9) installed inside the heating chamber (4), the heat exchange assembly (9) being connected to the air supply assembly (6), characterized in that ； A smoke chamber (5) is set inside the heating box (2), and multiple filter bag assemblies (10) are installed inside the smoke chamber (5), and the smoke chamber (5) is connected to the exhaust port of the heating box (2); A smoke purification assembly (7) is installed on one side of the heating chamber (2) and connected to the exhaust port of the heating chamber (2) during use. The smoke purification assembly (7) includes: The assembly tube (72) is connected to the exhaust port of the heating box (2); The purification chamber (73) is equipped with a one-way component (76), a multi-layer catalyst component (74) and an activated carbon fiber component (75) along the direction of smoke flow. The one-way component (76) includes a housing (761) with multiple one-way valve units (762) installed inside the housing (761) and a removable reinforcing cover (763) installed on the top of the housing (761). The bottom of both the reinforced cover (763) and the box (761) has a hollow structure; The one-way valve unit (762) includes a unit column, which has a semi-enclosed structure and a Tesla valve structure is provided inside the unit column. The Tesla valve structure within the unit column is connected to its unclosed side; Each unit column has a recessed area on one side of its top, and a fastener is installed inside the recessed area; The spiral pipe (71) includes an inner pipe (711) and an outer pipe (712) arranged in two layers from the inside to the outside. The inner pipe (711) is connected to the assembly pipe (72) and the purification box (73) for smoke circulation; The air inlet and outlet of the external pipe (712) are connected to the corresponding parts of the air supply assembly (6) for gas circulation; The direction of gas flow is opposite to the direction of smoke flow.

2. The energy-saving biomass pellet hot air furnace according to claim 1, characterized in that, The activated carbon fiber assembly (75) includes two sets of winding mechanisms, which are respectively installed on both sides inside the purification box (73). Activated carbon fiber cloth is wound between the winding parts of the two sets of winding mechanisms. The part of the activated carbon fiber cloth that is unfolded is the part in which it is used.

3. The energy-saving biomass pellet hot air furnace according to claim 2, characterized in that, The hot air furnace presets the usage time for the two sets of winding mechanisms. After the preset usage time is reached, the winding parts of the two sets of winding mechanisms rotate synchronously, and the usage part of the activated carbon fiber cloth wound on the outside is replaced.

4. The energy-saving biomass pellet hot air furnace according to claim 3, characterized in that, A cooling component (11) is installed inside the smoke chamber (5) on top of each filter bag assembly (10). The air inlet of the cooling component (11) is connected to the air outlet of the air supply component (6), and the air outlet of the cooling component (11) is connected to the heat exchange component (9).

5. The energy-saving biomass pellet hot air furnace according to claim 4, characterized in that, The cooling component (11) includes multiple cooling layers, each of which includes multiple parallel tubes, and the tubes at corresponding positions of each cooling layer are vertically distributed along the same axis.

6. The energy-saving biomass pellet hot air furnace according to claim 5, characterized in that, An exhaust assembly (77) is installed on top of the activated carbon fiber assembly (75) inside the purification chamber (73).

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