Firewood, biomass particle and fuel oil integrated stove

Abstract

The utility model discloses a firewood, biomass particle and fuel oil integrated stove which comprises a stove frame and a stove body, a stove shell is installed on the stove frame, the stove body is fixedly arranged on the stove frame, a hearth is arranged in the stove body, the rear side of the hearth is communicated with a smoke outlet pipe, the top of the hearth is used for placing cookware, and a stove head assembly is installed at the bottom of the hearth. A biomass particle box for providing biological particles for the furnace end assembly and a fuel tank for improving fuel oil are arranged on the furnace frame, and a hot air return groove is formed in the position, located on the periphery of the furnace end assembly, of the inner bottom of the stove body; the front end of the stove shell is provided with a firewood opening for throwing firewood for the furnace end assembly, the smoke outlet is connected with a dust removal water tank through a pipe, and the dust removal water tank is connected with a chimney through a smoke conveying pipe and an induced draft fan. According to the firewood, biomass particle and fuel oil integrated stove, firewood, biomass particles and fuel oil can be adopted as fuel for combustion, the combustion firepower is strong, ignition and combustion are fast, and black smoke is not prone to being generated.

Description

Technical Field

[0001] This utility model relates to the technical field of stoves, specifically to an integrated stove that combines firewood, biomass pellets, and fuel oil. Background Technology

[0002] Biomass pellets are produced by cold-forming and densifying crushed biomass straw, forestry waste, and other raw materials using pressure rollers and ring dies at room temperature. The density of the raw materials is generally 0.1-0.13 tons per square meter, while the density of the pellets after forming is 1.1-1.3 tons per square meter. This facilitates storage and transportation and significantly improves the combustion performance of biomass. After compression molding, the volume of biomass is greatly reduced, making it easier to transport, store, and use. This solves a key problem in the large-scale utilization of biomass, making this technology and equipment highly suitable for biomass power generation, clean energy transformation of industrial boilers, and new cooking fuels in rural areas.

[0003] Research has found that stoves currently burning biomass pellets that use firewood as fuel tend to produce black smoke, which cannot meet the needs of the catering industry. Therefore, firewood should not be used as fuel when there is a temporary shortage of biomass pellets and firewood is available. Summary of the Invention

[0004] The purpose of this utility model is to address the problems existing in the prior art by providing an integrated stove that combines firewood, biomass pellets, and fuel oil. This integrated stove can use firewood, biomass pellets, and fuel oil as fuels, resulting in strong combustion, rapid ignition, and minimal black smoke production.

[0005] This utility model is achieved using the following technical solution:

[0006] An integrated stove for firewood, biomass pellets, and fuel oil includes a stove frame and a stove body. A stove shell is mounted on the stove frame, and the stove body is fixedly mounted on the stove frame. The stove body contains a combustion chamber, with a flue pipe connected to the rear side of the combustion chamber. The top of the combustion chamber is used to place cookware, and the bottom of the combustion chamber houses a burner assembly. The stove frame is equipped with a biomass pellet box for supplying biomass pellets to the burner assembly and a fuel tank for increasing fuel oil levels. A regenerative air duct is located at the bottom of the stove body, around the outer periphery of the burner assembly. This regenerative air duct allows the heat generated during combustion to circulate and tumble with the airflow, preventing direct exhaust and reducing the heat of the flue gas, thus improving the utilization rate of the heat energy generated during combustion. A firewood inlet is located at the front of the stove shell for feeding firewood into the burner assembly. The flue pipe is connected to a dust collection water tank, which is connected to a chimney via a flue pipe and an induced draft fan.

[0007] A further preferred embodiment: the furnace head assembly includes a bottom-sealed oxygen supply cylinder, the lower part of which is connected to a blower via a blower pipe; a bottom-sealed combustion cylinder is fitted over the upper part of the oxygen supply cylinder, a retaining ring is provided on the outer periphery of the upper end of the combustion cylinder, the retaining ring is fitted onto a retaining platform on the upper part of the oxygen supply cylinder, the outer wall of the combustion cylinder does not contact the inner wall of the oxygen supply cylinder, leaving a gap, the cylinder wall of the combustion cylinder is provided with multiple air distribution holes in a ring shape, and the retaining ring is provided with multiple air passage holes communicating with the inner cavity of the oxygen supply cylinder; the... The bottom of the fuel tank is connected to a fuel supply pipe, on which a fuel outlet valve is installed. The fuel supply pipe extends to the top of the combustion chamber, and a pulse igniter is installed at the top of the fuel supply pipe. The bottom outlet of the biomass pellet box is connected to a screw conveyor. The outlet end of the screw conveyor is located between the fuel supply pipe and the combustion chamber. The end of the screw conveyor near the combustion chamber is connected to the blower pipe through a vent pipe. The firewood inlet is higher than the top of the combustion chamber, and the firewood extends from the top of the combustion chamber.

[0008] A further preferred embodiment: an operation panel and a fuel switch are installed on the stove shell in front of the stove frame; the operation panel is equipped with operation keys for controlling the operation of the blower, induced draft fan and pulse igniter and a display screen for displaying the working status, and the fuel switch controls the operation of the oil outlet valve.

[0009] A further preferred embodiment: the bottom of the dust removal water tank is provided with a slag discharge port, and a discharge valve is installed at the slag discharge port; when there is too much dust in the dust removal water tank, the discharge valve is opened to discharge the water and dust in the dust removal water tank together, and it can be put back into use after refilling with new water.

[0010] A further preferred embodiment: the top of the fuel tank is provided with a fuel filler neck for easy refueling.

[0011] A further preferred embodiment: the top of the rear end of the stove frame is provided with a rear baffle, and a water tap for easy access to water for cooking is installed on the rear baffle; the upper outer periphery of the stove body is tightly connected to the top surface of the stove shell, the top surface of the stove shell is provided with a water-blocking rim, and a drain outlet is provided on the top surface of the stove shell for easy drainage.

[0012] This integrated stove for firewood, biomass pellets, and fuel oil features a biomass pellet box on the stove frame to supply biomass pellets to the burner assembly and a fuel oil tank to enhance fuel oil production. A regenerating air duct is located at the bottom of the stove body around the burner assembly. A firewood inlet for adding firewood to the burner assembly is located at the front of the stove shell. A dust removal water tank is connected to the exhaust pipe, and the dust removal water tank is connected to a chimney via a smoke supply pipe and an induced draft fan. This combination of structures enables the use of firewood, biomass pellets, and fuel oil for combustion, resulting in a powerful fire, rapid ignition, and minimal black smoke production. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the integrated firewood, biomass pellet, and fuel oil stove.

[0014] Figure 2 This is a schematic diagram of the planar structure of the integrated stove that combines firewood, biomass pellets, and fuel oil.

[0015] Figure 3 This is a front cross-sectional view of the integrated firewood, biomass pellet, and fuel oil stove.

[0016] Figure 4 This is a side sectional view of the integrated stove that combines firewood, biomass pellets, and fuel oil.

[0017] Figure 5 This is a schematic diagram of the installation and connection structure of the burner head assembly;

[0018] The component names corresponding to the serial numbers in the diagram are:

[0019] 1. Stove frame, 2. Blower, 3. Control panel, 4. Stove shell, 5. Fuel switch, 6. Biomass pellet box, 7. Oil inlet, 8. Fuel tank, 9. Firewood inlet, 10. Rear baffle, 11. Chimney, 12. Water tap, 13. Water baffle, 14. Exhaust fan, 15. Smoke conveying pipe, 16. Dust removal water tank, 17. Ash discharge port, 18. Stove head assembly, 19. Blower pipe, 20. Air distribution pipe, 21. Screw conveyor, 22. Oil outlet valve, 23. Oil conveying pipe, 24. Pulse igniter, 25. Smoke exhaust pipe, 26. Stove body, 27. Regenerating air duct, 28. Oxygen supply cylinder, 29. Combustion cylinder, 30. Air distribution hole, 31. Snap ring, 32. Air passage hole. Detailed Implementation

[0020] The technical solutions of the invention will be clearly and completely described below with reference to the embodiments. The described embodiments are only a part of the present utility model, and not all of the embodiments.

[0021] Example 1

[0022] An integrated stove for firewood, biomass pellets, and fuel oil includes a stove frame 1 and a stove body 26. A stove shell 4 is installed on the stove frame 1, and the stove body 26 is fixedly installed on the stove frame 1. The stove body 26 contains a furnace chamber, and a flue pipe 25 is connected to the rear side of the furnace chamber. The top of the furnace chamber is used to place cookware, and a burner assembly 18 is installed at the bottom of the furnace chamber. The stove frame 1 is provided with a biomass pellet box 6 for supplying biomass pellets to the burner assembly 18 and a fuel tank 8 for increasing fuel oil. A regenerating air duct 27 is provided at the bottom of the stove body 26 on the outer periphery of the burner assembly 18. A firewood inlet 9 is provided at the front end of the stove shell 4 for feeding firewood into the burner assembly 18. The flue pipe 25 is connected to a dust removal water tank 16, and the dust removal water tank 16 is connected to a chimney 11 through a smoke supply pipe 15 and an induced draft fan 14.

[0023] The burner assembly 18 includes a bottom-sealed oxygen supply cylinder 28, with a blower 2 connected to the lower inner part of the oxygen supply cylinder 28 via a blower pipe 19; a bottom-sealed combustion cylinder 29 is fitted over the upper inner part of the oxygen supply cylinder 28, with a retaining ring 31 on the outer periphery of the upper end of the combustion cylinder 29, which is engaged with a retaining platform on the upper inner part of the oxygen supply cylinder 28. The outer wall of the combustion cylinder 29 does not contact the inner wall of the oxygen supply cylinder 28, leaving a gap. Multiple air distribution holes 30 are arranged in a ring on the cylinder wall of the combustion cylinder 29, and multiple air passage holes 32 communicating with the inner cavity of the oxygen supply cylinder 28 are provided on the retaining ring 31; the fuel tank 8... An oil supply pipe 23 is connected to the bottom, and an oil outlet valve 22 is installed on the oil supply pipe 23. The oil supply pipe 23 extends to the top of the combustion tube 29, and a pulse igniter 24 is installed at the position where the oil supply pipe 23 extends to the top of the combustion tube 29. A screw conveyor 21 is connected to the bottom outlet of the biomass pellet box 6. The outlet end of the screw conveyor 21 is located between the oil supply pipe 23 and the combustion tube 29. The end of the screw conveyor 21 near the combustion tube 29 is connected to the blower pipe 19 through the air distribution pipe 20. The height of the firewood inlet 9 is higher than the top of the combustion tube 29, and the firewood extends from the top of the combustion tube 29.

[0024] An operation panel 3 and a fuel switch 5 are installed on the stove shell 4 in front of the stove frame 1. The operation panel 3 is equipped with operation keys for controlling the operation of the blower 2, the induced draft fan 14 and the pulse igniter 24 and a display screen for displaying the working status. The fuel switch 5 controls the operation of the oil outlet valve 22.

[0025] The bottom of the dust removal water tank 16 is provided with a slag discharge port 17, and a discharge valve is installed on the slag discharge port 17.

[0026] The fuel tank 8 is provided with a fuel filler port 7 on its top.

[0027] The stove frame 1 has a rear baffle 10 at the top of its rear end, and a water tap 12 for easy water access during cooking is installed on the rear baffle 10; the upper outer periphery of the stove body 26 is tightly connected to the top surface of the stove shell 4, and the top surface of the stove shell 4 is provided with a water-blocking rim 13.

[0028] When the integrated firewood, biomass pellet, and fuel oil stove of this application uses biomass pellets as fuel, the fuel outlet valve 22 is opened via fuel switch 5, and fuel in fuel tank 8 flows from fuel pipe 23 to combustion chamber 29. The screw conveyor 21 is activated via control panel 3 to transport biomass pellets from biomass pellet box 6 to combustion chamber 29, where they come into contact with the fuel. Pulse igniter 24 ignites the fuel, and the biomass pellets are then ignited. The fuel outlet valve 22 can then be closed. Blower 2 supplies oxygen to oxygen supply cylinder 28 and combustion chamber 29 through blower pipe 19 and distribution pipe 20, thus achieving biomass pellet combustion. Firewood can then be added through firewood inlet 9, enabling mixed combustion of firewood and biomass pellets. When firewood is used as fuel, the fuel outlet valve 22 is opened via fuel switch 5, and fuel in fuel tank 8 flows from fuel pipe 23 to combustion chamber 29. The blower 2 is started via control panel 3, supplying oxygen to oxygen supply cylinder 28 and combustion chamber 29 through blower pipe 19 and distribution pipe 20. Firewood is added through firewood inlet 9, bringing it into contact with the fuel. Pulse igniter 24 ignites the fuel, thus igniting the firewood and achieving combustion. The flue gas produced by combustion enters the dust removal water tank 16 through exhaust pipe 25 for purification and dust removal. Then, under the action of induced draft fan 14, it is transported through smoke conveying pipe 15 and discharged from chimney 11.

[0029] The above description is not intended to limit the present utility model, nor is the present utility model limited to the above examples. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A stove integrating firewood, biomass pellets, and fuel oil, comprising a stove frame (1) and a stove body (26), wherein a stove shell (4) is installed on the stove frame (1), the stove body (26) is fixedly installed on the stove frame (1), the stove body (26) contains a furnace chamber, a flue pipe (25) is connected to the rear side of the furnace chamber, the top of the furnace chamber is used to place cookware, and a burner assembly (18) is installed at the bottom of the furnace chamber; the stove frame (1) is provided with a biomass pellet box (6) for providing biomass pellets to the burner assembly (18) and a fuel tank (8) for increasing fuel oil, characterized in that: The inner bottom of the stove body (26) is provided with a heat recovery air trough (27) on the outer periphery of the burner assembly (18); the front end of the stove shell (4) is provided with a firewood inlet (9) for feeding firewood into the burner assembly (18); the exhaust pipe (25) is connected to a dust removal water tank (16); the dust removal water tank (16) is connected to a chimney (11) through a smoke conveying pipe (15) and an induced draft fan (14).

2. The integrated stove combining firewood, biomass pellets, and fuel oil according to claim 1, characterized in that: The burner assembly (18) includes a bottom-sealed oxygen supply cylinder (28), and a blower (2) is connected to the lower part of the oxygen supply cylinder (28) through a blower pipe (19); a bottom-sealed combustion cylinder (29) is fitted over the upper part of the oxygen supply cylinder (28), and a retaining ring (31) is provided on the outer periphery of the upper end of the combustion cylinder (29). The retaining ring (31) is fitted onto the retaining platform in the upper part of the oxygen supply cylinder (28). The outer wall of the combustion cylinder (29) does not contact the inner wall of the oxygen supply cylinder (28), leaving a gap. The cylinder wall of the combustion cylinder (29) is provided with multiple air distribution holes (30) in a ring shape, and the retaining ring (31) is provided with multiple air passage holes (32) communicating with the inner cavity of the oxygen supply cylinder (28); the bottom of the fuel tank (8) The part is connected to an oil supply pipe (23), and an oil outlet valve (22) is installed on the oil supply pipe (23). The oil supply pipe (23) extends to the top of the combustion tube (29), and a pulse igniter (24) is installed at the position where the oil supply pipe (23) extends to the top of the combustion tube (29). The bottom outlet of the biomass pellet box (6) is connected to a screw conveyor (21). The discharge end of the screw conveyor (21) is located between the oil supply pipe (23) and the combustion tube (29). The end of the screw conveyor (21) near the combustion tube (29) is connected to the blower pipe (19) through the air distribution pipe (20). The height of the firewood inlet (9) is higher than the top of the combustion tube (29), and the firewood extends from the top of the combustion tube (29).

3. The integrated stove combining firewood, biomass pellets, and fuel oil according to claim 1, characterized in that: An operation panel (3) and a fuel switch (5) are installed on the stove shell (4) in front of the stove frame (1); the operation panel (3) is equipped with operation keys for controlling the operation of the blower (2), the induced draft fan (14) and the pulse igniter (24) and a display screen for displaying the working status; the fuel switch (5) controls the operation of the oil outlet valve (22).

4. The integrated stove combining firewood, biomass pellets, and fuel oil according to claim 1, characterized in that: The bottom of the dust removal water tank (16) is provided with a slag discharge port (17), and a discharge valve is installed at the slag discharge port (17).

5. The integrated stove combining firewood, biomass pellets, and fuel oil according to claim 1, characterized in that: The stove frame (1) is provided with a rear baffle (10) at the top of the rear end, and a water tap (12) is installed on the rear baffle (10) for easy water access during cooking; the upper outer periphery of the stove body (26) is tightly connected to the top surface of the stove shell (4), and a water-blocking rim (13) is provided on the top surface of the stove shell (4).

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