Biomass heating furnace

Abstract

The utility model provides a biomass cooking stove, which relates to the technical field of cooking stoves, and comprises a stove body and a main cabinet, the main cabinet is fixed on one side of the stove body, a hearth is arranged in the stove body, the upper end and the lower end of the hearth are respectively communicated with an ash discharge chamber and a heat conduction cavity, and an ignition disc is arranged between the ash discharge chamber and the hearth in a separated manner. The ignition disc is of a hollow plate surface structure with a built-in electric igniter, the ignition disc is communicated with a smoke exhaust chamber on one side of the ash discharge chamber, and a smoke exhaust fan is connected outside the smoke exhaust chamber; the biomass heating furnace has the advantages that the heat conduction cavity, the heat conduction base and the ignition disc are arranged in the hearth in an up-and-down opposite mode, fuel flames combusted under negative pressure are used for heating the spiral pipe in the heat conduction base, and heat conduction and heat exchange among the spiral pipe, the heat conduction base and the heat conduction cavity are used for heating the heat conduction base and the ignition disc. Therefore, heat energy supply to the cooking plate and the warm air window functional area is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of heating stoves, in particular to a biomass heating stove. Background Art

[0002] Biomass pellet fuel is essentially the direct combustion of biomass energy, a processed and utilized form of biomass. Direct combustion methods can be categorized as stove combustion, boiler combustion, garbage combustion, and solid fuel combustion. Solid fuel combustion is a newly popularized technology, solidifying biomass into a solid form before burning it in traditional coal-fired equipment. Its advantages include fully utilizing biomass energy to replace coal, reducing CO2 and SO2 emissions, and contributing to environmental protection, greenhouse gas emissions control, mitigating climate change, and reducing the occurrence of natural disasters.

[0003] Existing cooking stoves that use biomass pellets as the main heating fuel take into account both heating and cooking functions, and mainly achieve heating and cooking by combustion heating in the furnace. Since the direct fire heating method has the problem of combustion flue gas leakage polluting the indoor air environment, a negative pressure combustion heating furnace is used to avoid flue gas leakage. However, in actual use, due to the influence of negative pressure combustion heating, the fuel combustion is insufficient and the indirect heat conduction effect is poor, and the actual fuel thermal energy utilization rate and heating effect are not ideal. Utility Model Content

[0004] In view of the above technical problems existing in the prior art, a biomass cooking stove is provided to solve the problems of low combustion utilization rate of biomass fuel and poor heating effect in the prior art.

[0005] The purpose and effect of this utility model are achieved by the following specific technical means:

[0006] A biomass cooking stove comprises a stove body and a main cabinet, the main cabinet being fixed to one side of the stove body, a furnace being provided in the stove body, an ash discharge chamber and a heat conduction cavity being connected at the upper and lower ends of the furnace respectively, an ignition plate being provided between the ash discharge chamber and the stove body, the ignition plate being a hollow plate structure with a built-in electric igniter, the ignition plate being connected to a smoke exhaust chamber on one side of the ash discharge chamber, and the smoke exhaust chamber being connected to a smoke exhaust fan, a heat conduction seat being provided between the heat conduction cavity and the stove body, and a spiral pipe for internal drainage of water being provided in the heat conduction seat;

[0007] The furnace body is encapsulated with a furnace plate, and a cooking plate is embedded in the furnace plate. The inner side of the cooking plate is connected to the heat conduction cavity, and the outer side of the heat conduction cavity is penetrated by a warm air window with a built-in fan;

[0008] The main cabinet is provided with a control panel and a silo, a feeding channel is provided through the bottom of the silo, the other end of the feeding channel is connected to the furnace, and a feeding shaft is axially provided in the feeding channel, and the feeding shaft is driven by a built-in feeding motor.

[0009] A further preferred solution is that the hollow surface of the ignition disk is connected to a bucket mouth structure.

[0010] A further preferred solution is that an air ring is sleeved on the outer edge of the ignition disk, the outer end of the air ring is connected to an air intake pipe, and the air intake pipe is externally connected to an external air pipe.

[0011] A further preferred solution is that the outer end of the furnace is connected to the furnace body with a furnace door.

[0012] A further preferred solution is that the outer edge of the connection end between the furnace and the heat conducting seat is sealed with fireproof bricks.

[0013] A further preferred solution is that the heat-conducting cavity is a cavity wall structure with high thermal conductivity, the heat-conducting cavity and the spiral tube are encapsulated, and the spiral tube is externally connected to a replaceable pump head.

[0014] A further preferred solution is that a base plate is fixed on the outer side of the spiral tube of the heat conducting seat, and the base plate is connected to the wall of the heat conducting cavity.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This biomass cooking stove arranges a heat-conducting cavity, a heat-conducting seat and an ignition plate structure that are opposite to each other in the furnace, so as to utilize the fuel flame burning under negative pressure to heat the spiral tube in the heat-conducting seat, and utilizes the heat conduction and heat exchange between the spiral tube, the heat-conducting seat and the heat-conducting cavity to realize the supply of heat energy to the functional areas of the cooking plate and the warm air window. At the same time, through the separated furnace and heat-conducting cavity structure, the hot air flow is blown to the outside of the warm air window through the circulation exchange of external air flow and internal air flow, and synchronous heating is realized in conjunction with the furnace body temperature, thereby improving the thermal utilization rate and heating effect of the biomass fuel of the cooking stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal planar structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal planar structure of the main cabinet of the present utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the heat conducting seat of the present utility model.

[0021] Markings in the figure: 1-furnace body; 2-main cabinet; 3-furnace plate; 4-cooking plate; 5-silo; 6-control panel; 7-warm air window; 8-furnace door; 9-ash discharge chamber; 10-heat conduction cavity; 11-furnace; 12-feeding channel; 13-external air pipe; 14-smoke exhaust chamber; 15-smoke exhaust fan; 16-ignition plate; 17-inlet pipe; 18-heat conduction seat; 19-gas ring; 20-feeding shaft; 21-feeding motor; 22-coil pipe; 23-base plate; 24-pump pipe head. DETAILED DESCRIPTION

[0022] See also Figure 1-4 , further illustrate the embodiments of the present utility model;

[0023] A biomass cooking stove includes a stove body 1 and a main cabinet 2. The main cabinet 2 is fixed to one side of the stove body 1. A furnace 11 is provided in the stove body 1. The upper and lower ends of the furnace 11 are respectively connected to an ash discharge chamber 9 and a heat conduction chamber 10. An ignition plate 16 is provided between the ash discharge chamber 9 and the stove 11. The ignition plate 16 is a hollow plate structure with a built-in electric igniter. The ignition plate 16 is connected to a smoke exhaust chamber 14 on one side of the ash discharge chamber 9. The smoke exhaust chamber 14 is externally connected to a smoke exhaust fan 15. A heat conduction seat 18 is provided between the heat conduction chamber 10 and the stove 11. A spiral pipe 22 for internal drainage of water is provided in the heat conduction seat 18.

[0024] The furnace body 1 is encapsulated with a furnace plate 3, and a cooking plate 4 is embedded in the furnace plate 3. The inner side of the cooking plate 4 is connected to the heat conduction cavity 10, and the outer side of the heat conduction cavity 10 is penetrated by a warm air window 7 with a built-in fan;

[0025] The main cabinet 2 is provided with a control panel 6 and a silo 5. A feed channel 12 is provided through the bottom of the silo 5. The other end of the feed channel 12 is connected to the furnace 11. A feed shaft 20 is axially provided in the feed channel 12, and the feed shaft 20 is driven by a built-in feed motor 21.

[0026] In the biomass cooking stove, the furnace 11 mainly uses the ash discharge chamber 9 and the heat conduction cavity 10 arranged above and below as the slag collection chamber and heat energy collection chamber after the fuel is burned. The biomass fuel is mainly supplied by the hopper 5 in the main cabinet 2 for fuel particles, and the supply is driven by the working brake of the feeding motor 21 to drive the feeding shaft 20 to rotate axially, and then the fuel particles that sink to the bottom of the hopper 5 are pushed to the end of the material channel 12 through the spiral surface of the feeding shaft 20, and slide into the furnace 11 along the slope of the material channel 12, and finally fall on the ignition plate 16. Since the furnace 11 is closed and adopts a sunken smoke exhaust chamber 14 structure, when the fuel is burned under negative pressure, the flue gas and the heat energy it carries can first be heat-exchanged through the heat conduction seat 18, and then along the cavity wall of the furnace 11, and be sucked by the smoke exhaust fan 15 and discharged into the external flue gas duct, so as to further utilize the heat energy in the flue gas for heating;

[0027] The heat energy from the fuel combustion is mainly collected and exchanged through the spiral tube 22 in the heat-conducting seat 18, so as to utilize the heat energy generated by the fuel combustion to heat the heat-conducting cavity 10. The heat-conducting cavity 10 is separated by the heat-conducting seat 18 and is mainly connected to the heat-conducting cavity 10 through the external cooking pan 4 to meet the cooking function requirements of the warm cooking stove. At the same time, the built-in fan in the warm air window 7 can be used to draw in external air flow and then perform secondary hot air blowing by contacting and exchanging heat with the cavity wall of the heat-conducting cavity 10, so as to cooperate with the baking and heating during the combustion of the furnace body 1 structure itself, thereby performing further heating and improving the heating effect of the warm cooking stove.

[0028] At the same time, the above-mentioned electric control method is based on the control of the control board 6 on the main cabinet 2, and its control method is based on the existing PCB control circuit.

[0029] The hollow surface of the ignition plate 16 is connected to the bucket mouth structure, such as Figure 3 As shown, the hollow surface of the ignition plate 16 mainly serves as the bearing surface of the biomass fuel. The slag produced after the combustion of the biomass fuel will fall into the bucket mouth structure through the gaps in the hollow surface and eventually be discharged into the ash discharge chamber 9. The bucket mouth structure improves the slag collection effect from the ignition plate 16 to the ash discharge chamber 9.

[0030] On the basis of the above, an air ring 19 is provided on the outer edge of the ignition disk 16, and the outer end of the air ring 19 is connected to the air intake pipe 17, and the air intake pipe 17 is connected to the external air pipe 13. The external air can be connected through the external air pipe 13 to control the opening and closing of the air intake pipe 17 by opening and closing, so as to provide fresh air to the end of the ignition disk 16 along the air ring 19, so as to control the oxygen supply of the furnace 11 during negative pressure combustion and control its fuel combustion rate.

[0031] The outer end of the furnace 11 is connected to the furnace body 1 with a furnace door 8 , which mainly serves as an external door 8 structure to facilitate users to clean the furnace 11 .

[0032] The outer edge of the connection end between the furnace 11 and the heat-conducting seat 18 is blocked with fire-proof bricks. Since the furnace 11 and the heat-conducting seat 18 adopt a direct-fire combustion heating structure, the fire-proof bricks blocked on the outside further provide a way for the flame to concentrate heating to the bottom of the heat-conducting seat 18 when the fuel burns, thereby avoiding the flame heating the side of the furnace 11 and affecting the heating effect and the heat exchange efficiency of the heat-conducting seat 18.

[0033] The heat-conducting cavity 10 has a cavity wall structure with high thermal conductivity. The heat-conducting cavity 10 and the spiral tube 22 are encapsulated, and the spiral tube 22 is externally connected to a replaceable pump pipe head 24. The spiral tube 22 filled with water can use the specific heat capacity of the water to cover the cavity wall structure of the heat-conducting cavity 10 to ensure the heat supply effect to the cooking plate 4 and the warm air window 7 after the heat-conducting seat 18 is heated.

[0034] The heat conducting seat 18 is fixed with a base plate 23 on the outside of the spiral tube 22, and the base plate 23 is connected to the wall of the heat conducting cavity 10. Figure 4 As shown, the connected base plate 23 structure is further utilized to connect the spiral tube 22 and the wall structure of the heat conduction cavity 10 , thereby improving the heat conduction effect and efficiency of the heat conduction cavity 10 and the heat conduction seat 18 .

[0035] Working principle: When installing the biomass cooking stove, the external air pipe 13 is connected to the external air environment, the outlet end of the smoke exhaust fan 15 is connected to the smoke exhaust pipe, and then the silo 5 is opened to fill it with biomass fuel particles;

[0036] During use, the control panel 6 is used to sequentially turn on the feeding motor 21 and the ignition disk 16 igniter. The feeding shaft 20 is driven axially by braking the feeding motor 21, so that the biomass fuel particles at the bottom of the silo 5 are pushed to the feeding channel 12 along the surface of the feeding shaft 20 in a spiral manner, and finally fall onto the ignition disk 16 in the heat conduction cavity 10. The ignition disk 16 igniter is used to make the fuel burn under negative pressure in the heat conduction cavity 10. The fuel combustion will gradually heat the heat conduction seat 18, and the water in the spiral tube 22 in the heat conduction seat 18 absorbs heat and transfers the heat energy to the heat conduction cavity 10 for use by the cooking plate 4 on the heat conduction cavity 10. The user can place cooking utensils on the cooking plate 4 for heating operation, and at the same time, the fan in the warm air window 7 can be braked to blow the hot air through the air flow circulating through the external circuit after being heated by the heat conduction cavity 10.

[0037] During the process, the residue produced by the combustion of the fuel will fall into the ash discharge chamber 9 through the hollow surface of the ignition disk 16. The user can later clean it by opening the door of the ash discharge chamber 9. During the process, the smoke produced by the combustion of the fuel will be braked by the smoke exhaust fan and sucked into the external smoke exhaust pipe along the smoke exhaust chamber 14. During the process, the air intake pipe 17 can be opened and closed to provide fresh air to the end of the ignition disk 16 along the air ring 19 to control the combustion rate of the fuel in the furnace 11.

Claims

1. A biomass cooking stove, comprising a stove body (1) and a main cabinet (2), wherein the main cabinet (2) is fixed to one side of the stove body (1), and is characterized in that: A furnace (11) is provided in the furnace body (1), and the upper and lower ends of the furnace (11) are respectively connected to an ash discharge chamber (9) and a heat conduction cavity (10), and an ignition disk (16) is provided between the ash discharge chamber (9) and the furnace (11), and the ignition disk (16) is a hollow plate structure with a built-in electric igniter, and the ignition disk (16) is connected to a smoke exhaust chamber (14) on one side of the ash discharge chamber (9), and the smoke exhaust chamber (14) is externally connected to a smoke exhaust fan (15), and a heat conduction seat (18) is provided between the heat conduction cavity (10) and the furnace (11), and a spiral pipe (22) for internal drainage water is provided in the heat conduction seat (18); A stove plate (3) is encapsulated on the furnace body (1), and a cooking plate (4) is embedded in the stove plate (3); the inner side of the cooking plate (4) is connected to the heat conduction cavity (10); and a warm air window (7) with a built-in fan is provided on the outer side of the heat conduction cavity (10); The main cabinet (2) is provided with a control panel (6) and a silo (5); a feeding channel (12) is provided through the bottom of the silo (5); the other end of the feeding channel (12) is connected to the furnace (11); a feeding shaft (20) is axially provided in the feeding channel (12), and the feeding shaft (20) is driven by a built-in feeding motor (21).

2. A biomass cooking stove according to claim 1, characterized in that: The hollow surface of the ignition plate (16) is connected to the bucket mouth structure.

3. The biomass cooking stove according to claim 2, characterized in that: An air ring (19) is sleeved on the outer edge of the ignition disk (16), and the outer end of the air ring (19) is connected to an air intake pipe (17), and the air intake pipe (17) is externally connected to an external air pipe (13).

4. The biomass cooking stove according to claim 1, characterized in that: The outer end of the furnace (11) is connected to a furnace door (8) on the furnace body (1).

5. The biomass cooking stove according to claim 1, characterized in that: The outer edge of the connection end between the furnace (11) and the heat conducting seat (18) is sealed with fireproof bricks.

6. The biomass cooking stove according to claim 1, characterized in that: The heat-conducting cavity (10) is a cavity wall structure with high heat conductivity. The heat-conducting cavity (10) and the spiral tube (22) are encapsulated, and the spiral tube (22) is externally connected to a replaceable pump head (24).

7. The biomass cooking stove according to claim 6, characterized in that: The heat conducting seat (18) is fixed with a base plate (23) on the outside of the spiral tube (22), and the base plate (23) is connected to the wall of the heat conducting cavity (10).

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