A biomass pellet fireplace based on temperature difference power generation

Abstract

The present invention relates to the technical field of biomass fuel equipment. A biomass particle fireplace based on temperature difference power generation comprises a fireplace body, a furnace, a feed port and a charging box are provided on the surface of the fireplace body, the charging box is placed at the bottom of the furnace, a plurality of heat dissipation pipes are provided above the furnace, a temperature difference power generation component, a feeding component and a smoke exhaust preheating component are provided in the fireplace body, and the furnace and the feeding component cooperate to perform uninterrupted combustion and heating. The present invention provides a biomass particle fireplace based on temperature difference power generation which can generate electricity and supply power by the temperature difference between the inside and outside of the fireplace when it is burning, and convert the heat energy of the fireplace into electrical energy, which can meet the heating demand, improve the comprehensive utilization rate of combustion, and realize the self-power supply of the fireplace equipment; it solves the technical problems existing in the prior art that part of the heat of the current biomass fireplace is wasted, the fuel utilization rate is reduced, the fireplace equipment needs external power support, is limited by the power supply, and increases the inconvenience of use.

Description

Technical Field

[0001] The invention relates to the technical field of biomass fuel equipment, and in particular to a biomass particle fireplace based on temperature difference power generation. Background Art

[0002] As a heating device, fireplaces are widely used because of their safety, high efficiency and ornamental value. Traditional biomass pellet fireplaces generate heat by burning biomass pellets for indoor heating or industrial heating. However, part of the heat is absorbed by the furnace wall but not effectively exchanged with the outside world, resulting in heat energy waste and reduced fuel utilization efficiency.

[0003] In addition, existing fireplace designs usually fail to effectively recover the waste heat in the flue gas, resulting in heat waste. If the waste heat of the flue gas can be effectively used to preheat the inlet air, it can not only reduce the flue gas emission temperature, but also improve the combustion efficiency, further improving the thermal efficiency and environmental performance of the fireplace.

[0004] With the popularization of electrification technology, users' demands for fireplaces have gradually diversified, such as the need to drive electrical equipment such as exhaust fans and blowers. However, these devices usually require external power support. In remote areas or mobile environments, the limitation of power supply increases the inconvenience of use, so there is a need for improvement. Summary of the invention

[0005] The present invention provides a biomass particle fireplace based on temperature difference power generation, which can generate electricity and supply power by means of the temperature difference between the inside and outside of the fireplace when it is burning, and convert the heat energy of the fireplace into electrical energy, which can not only meet the heating demand, but also improve the comprehensive utilization rate of combustion, realize the self-power supply of the fireplace equipment, reduce the dependence on external power supply, and improve the applicability in different environments; it solves the technical problems existing in the prior art that part of the heat of the current biomass fireplace is wasted, the fuel utilization rate is reduced, the thermal efficiency and environmental protection of the fireplace need to be improved, the fireplace equipment needs external power support, and in remote areas or mobile environments, it will be limited by the power supply, which increases the inconvenience of use.

[0006] The above technical problems of the present invention are solved by the following technical solutions: a biomass pellet fireplace based on temperature difference power generation, comprising a fireplace body, a furnace, a feed port and a charging box are provided on the surface of the fireplace body, the charging box is placed at the bottom of the furnace, a plurality of heat dissipation pipes for heating air are provided above the furnace, a temperature difference power generation component, a feeding component and a smoke exhaust preheating component are provided in the fireplace body, and the furnace and the feeding component cooperate to perform uninterrupted combustion and heating. The furnace in the fireplace body of the present invention generates a large amount of heat through the combustion of biomass particles, the temperature difference power generation component generates electricity by utilizing the temperature difference inside and outside the fireplace, and the heat energy of the fireplace is converted into electrical energy for driving other devices or electrical equipment. On the one hand, it reduces the waste of heat and improves the comprehensive utilization rate of fuel; on the other hand, it realizes the self-power supply of the fireplace equipment, reduces the dependence on the external power supply, and improves the applicability of the fireplace in remote areas or mobile scenarios.

[0007] Preferably, the thermoelectric power generation assembly includes a thermoelectric power generation sheet fixed on the outer wall of the furnace of the fireplace body, and a heat sink is arranged on the outer side of the thermoelectric power generation sheet, which uses the temperature difference to convert the heat energy in the fireplace into electrical energy to drive each load. When the fireplace body of the present invention is working, the biomass particles in the storage box are burned in the furnace to generate a large amount of heat, the temperature of the outer wall of the furnace rises, one side of the thermoelectric power generation sheet attached to the outer wall of the furnace is in a high temperature state, and the other side is under the effect of rapid heat exchange of the heat sink. After the temperature difference is formed on both sides of the thermoelectric power generation sheet, according to the Seebeck effect, voltage is generated on both sides of the thermoelectric power generation sheet, and the electrical energy generated by it is transmitted to the load through the wire.

[0008] Preferably, a silicone grease layer is filled between the thermoelectric power generation sheet and the heat sink, which can quickly transfer the heat of the thermoelectric power generation sheet to the heat sink, thereby improving the power generation capacity of the thermoelectric power generation sheet.

[0009] Preferably, the feeding assembly comprises a storage box fixed in the main body of the fireplace, a screw conveyor and a feeding motor are provided at the outlet below the storage box, a feeding pipe is provided at the discharge end of the screw conveyor, and the feeding pipe is connected to the furnace. After the feeding motor is started, the driving motor drives the screw conveyor to rotate, and the biomass particles in the storage box enter the furnace through the feeding port along the feeding pipe, and finally fall into the charging box to continue residual combustion, so that there is an uninterrupted fuel supply in the furnace.

[0010] Preferably, the smoke exhaust preheating assembly includes a smoke exhaust fan and a blower fixed in the fireplace body, and the blower is connected to the heat dissipation pipe; a smoke exhaust pipe and an air intake pipe are arranged horizontally at the bottom of the fireplace body, and a smoke recovery channel and an air return channel are arranged longitudinally in the fireplace body, and the smoke return channel is connected to the smoke exhaust fan. After the smoke exhaust fan is started, the high-temperature smoke is sucked into the smoke recovery channel after completing the heat exchange through the heat dissipation pipe, and finally discharged outdoors. In this process, the heat of the smoke is used to preheat the return air; at the same time, the exhaust effect of the smoke exhaust fan is to form a negative pressure inside the furnace, and the air preheated through the air return channel is sucked into the furnace to participate in the combustion, which can increase the temperature of the air entering the furnace and enhance the combustion efficiency.

[0011] Preferably, the flue gas return channel and the air return channel are arranged alternately. The flue gas recovery channel and the air return channel are arranged alternately, and the return air is preheated by using the heat of the flue gas, which can increase the temperature of the air entering the furnace and enhance the combustion efficiency.

[0012] Preferably, the smoke exhaust preheating assembly also includes an insulation plate spaced apart from the heat sink, with a channel for air circulation left between the insulation plate and the heat sink. Air enters through an air intake duct, passes through the space between the insulation plate and the heat sink, rises to the top, returns to the bottom along the air reflux channel, and then enters the furnace from the bottom of the fireplace.

[0013] The temperature difference power generation sheet is connected in parallel with the blower, the smoke exhaust fan, and the feed motor through a wire. The present invention generates electricity by utilizing the temperature difference inside and outside the fireplace, converting the heat energy of the fireplace into electrical energy for driving other devices or electrical equipment. On the one hand, it reduces the waste of heat and improves the comprehensive utilization rate of fuel; on the other hand, it realizes the self-power supply of the fireplace equipment, reduces the dependence on the external power supply, and improves the applicability of the fireplace in remote areas or mobile scenarios.

[0014] The power generation method of the biomass pellet fireplace based on temperature difference power generation is further described, characterized in that it includes the following steps: Step a: When the fireplace is working, the biomass particles in the furnace burn and generate a lot of heat. At this time, one side of the thermoelectric generator is in a high temperature state, and the temperature of the other side is rapidly reduced through rapid heat exchange with the air through the heat sink, forming a temperature difference. The thermoelectric generator generates voltage and transmits electrical energy to the load through wires, such as smoke exhaust fans, blowers and feeding motors.

[0015] Step b, when the blower is started, the lower temperature in the room is sucked into the heat dissipation pipe, and the high-temperature flue gas generated by the combustion in the furnace exchanges heat with the air in the heat dissipation pipe. The air absorbs the heat and releases it into the room.

[0016] Step c, when the smoke exhaust fan is started, the high-temperature smoke is sucked into the smoke recovery channel after completing heat exchange through the heat dissipation pipe, and is finally discharged to the outside through the smoke exhaust pipe; in this process, the waste heat of the smoke will preheat the air in the air return channel; at the same time, the exhaust action of the smoke exhaust fan forms a negative pressure in the furnace, and the air preheated in the air return channel is sucked into the furnace.

[0017] Step d, when the feeding motor is started, the driving motor drives the screw conveyor to rotate, and the biomass particles are transported to the feeding pipe, and enter the furnace through the feeding port, and fall into the charging box to continue to participate in combustion.

[0018] Therefore, the biomass particle fireplace based on temperature difference power generation of the present invention has the following advantages: it can generate electricity and power itself through the temperature difference between the inside and outside of the fireplace when it is burning, and convert the thermal energy of the fireplace into electrical energy, which can not only meet the heating needs, but also improve the comprehensive utilization rate of combustion, realize the self-power supply of the fireplace equipment, reduce the dependence on external power supply, and improve the applicability in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of a biomass particle fireplace based on temperature difference power generation according to the present invention.

[0020] Figure 2 yes Figure 1 Schematic diagram of the rear view stereo structure.

[0021] Figure 3 yes Figure 1 Schematic diagram of the explosion structure of the medium temperature difference power generation chip.

[0022] Figure 4 yes Figure 3 Schematic diagram of the three-dimensional structure of the screw conveyor.

[0023] In the figure, there are a fireplace body 1, a furnace 2, a feed port 3, a charging box 4, a heat dissipation pipe 5, a temperature difference power generation sheet 6, a heat sink 7, a storage box 8, a screw conveyor 9, a feeding motor 10, a feeding pipe 11, a smoke exhaust fan 12, a blower 13, a smoke exhaust pipe 14, an air intake pipe 15, a smoke recovery channel 16, an air return channel 17, and a heat insulation board 18. DETAILED DESCRIPTION

[0024] The technical solution of the invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0025] Example: like Figure 1 and 2As shown in Figures 3 and 4, a biomass pellet fireplace based on temperature difference power generation includes a fireplace body 1, a furnace 2 and a feed port 3 are provided on the surface of the fireplace body 1, a loading box 4 is placed at the bottom of the furnace 2, and a plurality of heat dissipation pipes 5 for heating the air are installed above the furnace 2. A temperature difference power generation component, a feeding component and a smoke exhaust preheating component are installed in the fireplace body 1, and the furnace 2 cooperates with the feeding component to achieve uninterrupted combustion and heat generation.

[0026] The temperature difference power generation component includes a temperature difference power generation sheet 6 fixed on the outer wall of the furnace 2 of the fireplace body 1, a heat sink 7 is fixedly installed on the outside of the temperature difference power generation sheet 6, and a silicone grease layer is filled between the temperature difference power generation sheet 6 and the heat sink 7. The temperature difference is used to convert the heat energy in the fireplace into electrical energy to drive various loads.

[0027] The feeding assembly includes a storage box 8 fixed in the fireplace body 1, a screw conveyor 9 and a feeding motor 10 are installed at the outlet below the storage box 8, a feeding pipe 11 is installed at the discharge end of the screw conveyor 9, and the feeding pipe 11 is connected to the furnace 2.

[0028] The smoke exhaust preheating assembly includes a smoke exhaust fan 12 and a blower 13 fixed in the fireplace body 1, and the blower 13 is connected to the heat dissipation pipe 5; a smoke exhaust pipe 14 and an air intake pipe 15 are horizontally installed at the bottom of the fireplace body 1, and a smoke recovery channel 16 and an air return channel 17 are longitudinally installed in the fireplace body 1, and the smoke return channel and the air return channel 17 are staggered; the smoke return channel is connected to the smoke exhaust fan 12.

[0029] The temperature difference power generation sheet 6 is connected in parallel with the blower 13, the smoke exhaust fan 12, and the feeding motor 10 through wires.

[0030] The smoke exhaust preheating assembly also includes an insulation board 18 spaced apart from the heat sink 7. A passage for air circulation is reserved between the insulation board 18 and the heat sink 7. Air enters through the air intake duct 15, passes through the space between the insulation board 18 and the heat sink 7, rises to the top, and then returns to the bottom along the air return passage 17, and then enters the furnace 2 from the bottom of the fireplace.

[0031] The power generation method of the present invention is as follows: Step a, when the fireplace is working, the biomass particles in the furnace 2 burn to generate a large amount of heat. At this time, one side of the thermoelectric power generation sheet 6 is in a high temperature state, and the temperature of the other side is rapidly reduced through rapid heat exchange with the air through the heat sink 7, forming a temperature difference. The thermoelectric power generation sheet 6 generates voltage and transmits electrical energy to the load through the wire, such as the smoke exhaust fan 12, the blower 13 and the feeding motor 10.

[0032] Step b, when the blower 13 is started, the lower temperature in the room is sucked into the heat dissipation pipe 5, and the high-temperature flue gas generated by the combustion in the furnace 2 exchanges heat with the air in the heat dissipation pipe 5, and the air absorbs the heat and releases it into the room.

[0033] Step c, when the smoke exhaust fan 12 is started, the high-temperature smoke is sucked into the smoke recovery channel 16 after completing the heat exchange through the heat dissipation pipe 5, and is finally discharged to the outside through the smoke exhaust pipe 14; in this process, the waste heat of the smoke will preheat the air in the air return channel 17; at the same time, the suction effect of the smoke exhaust fan 12 creates a negative pressure in the furnace 2, and the air preheated by the air return channel 17 is sucked into the furnace 2.

[0034] Step d, when the feeding motor 10 is started, the driving motor drives the screw conveyor 9 to rotate, and the biomass particles are transported to the feeding pipe 11, and enter the furnace 2 through the feed port 3, and fall into the charging box 4 to continue to participate in combustion.

[0035] When the fireplace body 1 of the present invention is working, a large amount of heat is generated by the combustion of biomass particles in the storage box 8 in the furnace 2, and the temperature of the outer wall of the furnace 2 increases. One side of the thermoelectric power generation sheet 6 attached to the outer wall of the furnace 2 is in a high temperature state, and the other side is in a state of rapid heat exchange due to the heat sink 7. After a temperature difference is formed on both sides of the thermoelectric power generation sheet 6, according to the Seebeck effect, a voltage is generated on both sides of the thermoelectric power generation sheet 6, and the generated electric energy is transmitted to the load, such as the smoke exhaust fan 12, the blower 13 and the feeding motor 10, through the wire.

[0036] When the blower 13 is started, the relatively low temperature air in the room is blown into the heat dissipation pipe 5. The high temperature flue gas generated by the combustion in the furnace 2 exchanges heat with the air in the heat dissipation pipe 5. The air absorbs the heat of the flue gas and releases it into the room, thereby increasing the temperature of the room.

[0037] When the smoke exhaust fan 12 is started, the high-temperature smoke is sucked into the smoke recovery channel 16 after completing the heat exchange through the heat dissipation pipe 5, and is finally discharged to the outside. In this process, the smoke recovery channel 16 and the air return channel 17 are arranged alternately, and the heat of the smoke is used to preheat the return air; at the same time, the exhaust effect of the smoke exhaust fan 12 is to form a negative pressure inside the furnace 2, and the air preheated by the air return channel 17 is sucked into the furnace 2 to participate in the combustion, which can increase the temperature of the air entering the furnace 2 and enhance the combustion efficiency.

[0038] At the same time, after the feeding motor 10 is started, the driving motor drives the screw conveyor 9 to rotate, and the biomass particles in the storage box 8 enter the furnace 2 through the feeding port 3 along the feeding pipe 11, and finally fall into the charging box 4 to continue the residual combustion, so that there is an uninterrupted fuel supply in the furnace 2.

[0039] The loads in the present invention include but are not limited to the smoke exhaust fan 12, the blower 13, and the feed motor 10. Other electrical equipment can also be connected to the temperature difference power generation sheet 6 to utilize the electrical energy outputted therefrom.

[0040] The present invention generates electricity by utilizing the temperature difference between the inside and outside of the fireplace, thereby converting the heat energy of the fireplace into electrical energy for driving other devices or electrical equipment. On the one hand, it reduces heat waste and improves the comprehensive utilization rate of fuel; on the other hand, it realizes self-power supply of the fireplace equipment, reduces dependence on external power supply, and improves the applicability of the fireplace in remote areas or mobile scenarios.

[0041] The present invention preheats the incoming air by utilizing the waste heat of the flue gas, thereby reducing the exhaust temperature of the flue gas and significantly improving the thermal efficiency of the fireplace.

[0042] The specific embodiments described herein are merely examples of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A biomass pellet fireplace based on temperature difference power generation, characterized by: It includes a fireplace main body, a furnace, a feed port and a loading box are provided on the surface of the fireplace main body, the loading box is placed at the bottom of the furnace, a plurality of heat dissipation pipes for heating the air are provided above the furnace, a temperature difference power generation component, a feeding component and a smoke exhaust preheating component are provided in the fireplace main body, and the furnace and the feeding component cooperate to carry out uninterrupted combustion and heat generation.

2. The biomass pellet fireplace based on temperature difference power generation according to claim 1, characterized in that: The temperature difference power generation assembly comprises a temperature difference power generation sheet fixed on the outer wall of the fireplace main body furnace, and a heat sink is arranged outside the temperature difference power generation sheet, which utilizes the temperature difference to convert the heat energy in the fireplace into electric energy to drive various loads.

3. The biomass pellet fireplace based on temperature difference power generation according to claim 2, characterized in that: A silicone grease layer is filled between the temperature difference power generation sheet and the heat sink.

4. The biomass pellet fireplace based on temperature difference power generation according to claim 1, characterized in that: The feeding assembly comprises a storage box fixed in the fireplace body, a screw conveyor and a feeding motor are arranged at the outlet below the storage box, a feeding pipe is arranged at the discharge end of the screw conveyor, and the feeding pipe is communicated with the furnace.

5. The biomass pellet fireplace based on temperature difference power generation according to claim 1, characterized in that: The smoke exhaust preheating assembly includes a smoke exhaust fan and a blower fixed in the fireplace body, and the blower is connected to the heat dissipation pipe; a smoke exhaust pipe and an air intake pipe are horizontally arranged at the bottom of the fireplace body, and a smoke recovery channel and an air return channel are longitudinally arranged in the fireplace body, and the smoke return channel is connected to the smoke exhaust fan.

6. The biomass pellet fireplace based on temperature difference power generation according to claim 5, characterized in that: The smoke return channel and the air return channel are arranged alternately.

7. The biomass pellet fireplace based on temperature difference power generation according to claim 5, characterized in that: The smoke exhaust preheating assembly also includes an insulation board spaced apart from the heat sink, with a passage for air circulation left between the insulation board and the heat sink. Air enters through an air intake duct, passes through the space between the insulation board and the heat sink, rises to the top, returns to the bottom along the air return passage, and then enters the furnace from the bottom of the fireplace.

8. A biomass pellet fireplace based on temperature difference power generation according to any one of claims 1 to 7, characterized in that: The temperature difference power generation sheet is connected in parallel with the blower, the smoke exhaust fan and the feeding motor through wires.

9. A power generation method of a biomass pellet fireplace based on temperature difference power generation according to any one of claims 1 to 7, characterized in that: The following steps are included: Step a: When the fireplace is working, the biomass particles in the furnace burn and generate a lot of heat. At this time, one side of the thermoelectric power generation sheet is in a high temperature state, and the temperature of the other side is rapidly reduced through rapid heat exchange with the air through the heat sink, forming a temperature difference. The thermoelectric power generation sheet generates voltage and transmits electrical energy to the load, such as the smoke exhaust fan, blower and feeding motor, through the wire; Step b, when the blower is started, the lower temperature in the room is sucked into the heat dissipation pipe, and the high-temperature flue gas generated by the combustion in the furnace exchanges heat with the air in the heat dissipation pipe, and the air absorbs the heat and releases it into the room; Step c, when the smoke exhaust fan is started, the high-temperature smoke is sucked into the smoke recovery channel after completing the heat exchange through the heat dissipation pipe, and is finally discharged to the outside through the smoke exhaust pipe; in this process, the waste heat of the smoke will preheat the air in the air return channel; at the same time, the exhaust effect of the smoke exhaust fan forms a negative pressure in the furnace, and the air preheated in the air return channel is sucked into the furnace; Step d, when the feeding motor is started, the driving motor drives the screw conveyor to rotate, and the biomass particles are transported to the feeding pipe, and enter the furnace through the feeding port, and fall into the charging box to continue to participate in combustion.

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