Smokeless firewood stove with firepower control system

Abstract

The utility model belongs to the technical field of fire stoves, and particularly relates to a smokeless firewood stove with a firepower control system, a combustion chamber of the firewood stove is provided with a fire blocking ring, and the fire blocking ring is larger at the lower part and smaller at the upper part, so that fire is easier to gather and firepower is strong; one end, positioned on two sides of the fire blocking ring, of the smoke return flue is blocked, and the other end is opened to form a smooth smoke return flue for discharging smoke, so that smoke is prevented from overflowing, and the comfort of a kitchen environment is improved; and when the temperature inside the combustion chamber reaches a certain high temperature, secondary combustion can be formed when the smoke passes through the smoke return flue, sufficient combustion is achieved, fuel is saved, and smoke is reduced. And 2, the smokeless firewood stove with the firepower control system is provided with the firepower control system comprising a primary air inlet valve baffle and a stove door baffle, so that the firepower can be accurately controlled, and different cooking requirements are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of stoves, and in particular relates to a smokeless wood stove with a fire control system. Background Art

[0002] Traditional wood-fired stoves are difficult to control because of the difficulty in controlling the size of the fire and produce a lot of smoke during the combustion process, which has a certain impact on the environment and human health. Among them, the fuel inlet and air inlet of traditional wood-fired stoves are generally open, and the amount of air entering during the combustion process is uncontrolled, allowing the firewood to burn freely. Regardless of whether more firepower is needed when cooking, the combustion state is the same, which not only causes fuel waste, but also cannot adjust the firepower according to demand, making it inconvenient to use. In addition, the interior of the combustion chamber of the current wood-fired stove is a cylindrical space. When the firewood burns inside, it is easy for incomplete combustion to occur, and a lot of smoke will often be generated during the combustion process. The smoke can easily overflow from the fuel inlet into the kitchen, polluting the kitchen environment and being detrimental to human health. Utility Model Content

[0003] The utility model aims to provide a smokeless wood-fired stove with a fire control system, so as to achieve the effects of strong firepower, fuel saving, precise firepower control, reduced smoke generation, and improved kitchen environment comfort through the smokeless wood-fired stove with a fire control system.

[0004] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0005] A combustion chamber of a wood-fired stove is provided, which is located in the stove body and includes a fire barrier, a smoke return duct, a fuel inlet, an air inlet and a smoke exhaust port. The fire barrier is in the shape of a ring that is larger at the bottom and smaller at the top, and the top of the fire barrier is a flame outlet. The return smoke duct is located between the outer wall of the fire barrier and the inner wall of the stove body, and the return smoke duct is arranged around the outer circumference of the fire barrier; the smoke exhaust port is arranged on the inner wall of the stove body, and the smoke exhaust port is connected to the internal smoke port of the stove body; the fuel inlet and the air inlet are respectively arranged on the upper and lower sides of the stove body, the front end of the fire barrier is provided with a notch connected to the fuel inlet, the bottom of the fire barrier is a ventilation grille, and the air inlet is connected to the bottom of the ventilation grille; one side of the notch of the fire barrier extends to the inner wall of the stove body to form a smoke-blocking wall, the head end of the return smoke duct is the return smoke inlet located on the other side of the notch, and the end is blocked by the smoke-blocking wall.

[0006] Preferably, the smoke exhaust port is located at the rear of the return smoke duct.

[0007] The second aspect of the present invention is to provide a smokeless wood-fired stove with a fire control system, comprising a stove body, in which the combustion chamber of the wood-fired stove described above is arranged; it also includes a fire control system and a smoke exhaust system, the fire control system including a primary air intake valve baffle arranged at the air inlet, and a movable stove door baffle arranged at the fuel inlet, the primary air intake valve baffle and the stove door baffle are respectively provided with an air intake control valve; the smoke exhaust system includes an internal flue and an outdoor chimney arranged in the stove body.

[0008] Preferably, a first-gear air intake control valve, a second-gear air intake control valve, and a third-gear air intake control valve are provided on the primary air intake valve baffle, and a secondary air intake control valve is provided on the stove door baffle.

[0009] Preferably, a fire-resistant glass observation window is also provided on the stove door baffle.

[0010] Preferably, the inner diameter of the outdoor chimney is 180-220 mm and the height is 5-7 m.

[0011] Preferably, the secondary air intake control valve includes a valve plate arranged on the rear side of the stove door baffle, a first air intake grille hole is provided on the stove door baffle, a second air intake grille hole is correspondingly provided on the valve plate, and a toggle rod passing through the stove door baffle is provided on the valve plate. In the process of moving the valve plate by the toggle rod, when the first air intake grille hole overlaps with the second air intake grille hole, the secondary air intake control valve is fully opened.

[0012] Compared with the existing technology, the beneficial effects of the present invention are as follows: 1. The combustion chamber of the wood-fired stove is provided with a fire barrier, which is larger at the bottom and smaller at the top, making it easier to gather fire and having a strong firepower; the return flue is located on both sides of the fire barrier, with one end blocked and the other end open to form a smooth return flue for exhausting smoke, preventing smoke from overflowing and improving the comfort of the kitchen environment; and when a certain high temperature is reached inside the combustion chamber, the smoke can form a secondary combustion when passing through the return flue, achieving full combustion, saving fuel, and reducing smoke generation. 2. The smokeless wood-fired stove with a firepower control system is provided with a firepower control system including a primary air intake valve baffle and a stove door baffle, so that the firepower can be precisely controlled to meet different cooking needs, and the firepower control operation is simple and safe to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic structural diagram of an embodiment of a combustion chamber of a wood-fired stove according to the present invention inside the stove body.

[0015] Figure 2 The utility model is a schematic diagram of the three-dimensional structure of a smokeless wood stove with a fire control system according to an embodiment of the present invention.

[0016] Figure 3 The present invention is a schematic structural diagram of a stove door baffle in an embodiment of a smokeless wood-fired stove with a fire control system.

[0017] Figure 4 The present invention is a schematic structural diagram of a valve plate behind a stove door baffle in one embodiment of a smokeless wood-fired stove with a fire control system.

[0018] Figure 5 The utility model is a schematic diagram of the three-dimensional structure of the primary air intake valve baffle in an embodiment of the smokeless wood-fired stove with a fire control system.

[0019] In the figure, the numbers are indicated as: fire barrier 1, gap 11, smoke blocking wall 12, outer wall of fire barrier 13, return flue 2, return smoke inlet 21, fuel inlet 3, air inlet 4, smoke exhaust port 5, ventilation fence 6, pot body 7, stove door baffle 8, secondary air intake control valve 81, valve plate 811, toggle lever 812, fire-resistant glass observation window 82, primary air intake valve baffle 9, first-gear air intake control valve 91, second-gear air intake control valve 92, third-gear air intake control valve 93, stove body 10, stove body inner wall 101, strip platform 102, outdoor chimney 20. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In one embodiment, a combustion chamber of a wood-burning stove is provided, Figure 1As shown, the combustion chamber is located in the stove body 10, which is filled with refractory bricks and refractory materials. The combustion chamber of the wood stove includes a fire barrier 1, a return flue 2, a fuel inlet 3, an air inlet 4 and a smoke exhaust port 5. The fire barrier 1 is in the shape of a ring with a larger bottom and a smaller top, that is, a ring wall similar to an inverted cone, so that the fire barrier 1 forms a cover structure, which is used to gather fire when the fuel burns inside. The top of the fire barrier 1 is a flame outlet, and the burning flame heats the pot body above from the flame outlet. The return flue 2 is located between the outer wall 13 of the fire barrier 1 and the inner wall 101 of the stove body 10. The return flue 2 is arranged around the outer periphery of the fire barrier 1. The return flue 2 is used to discharge the smoke generated by the combustion inside the fire barrier 1 to the smoke exhaust port 5. The smoke exhaust port 5 is set on the inner wall 101 of the stove body 10. The smoke exhaust port 5 is connected to the internal flue of the stove body 10. The internal flue of the stove body 10 is a flue arranged inside the stove body 10, and the end of the internal flue is connected to the chimney. The fuel inlet 3 and the air inlet 4 are respectively arranged on the upper and lower sides of the stove body 10. The front end of the fire barrier 1 is provided with a notch 11 connected to the fuel inlet 3. Firewood can be directly placed into the fire barrier 1 through the fuel inlet 3. The bottom of the fire barrier 1 is a ventilation grille 6. The ventilation grille 6 is formed by setting up steel bars at intervals when building the stove body 10, or by directly placing a steel screen there. The bottom of the ventilation grille is an ash chamber. The air inlet 4 is connected to the bottom of the ventilation grille 6. The ventilation grille is used to draw air from the air inlet 4 to promote combustion, and to drop the ash left by the burning firewood downward. The left side of the notch 11 of the fire barrier 1 extends to the inner wall of the stove body 10 to form a smoke blocking wall 12. The return smoke duct 2 ends at the return smoke inlet 21 located to the right of the notch 11, and the end is blocked by the smoke blocking wall 12. This allows the return smoke duct 2 to form a channel leading to the smoke exhaust port 5, which is conducive to smooth smoke exhaust and prevents smoke from flowing out due to disordered smoke flow.

[0022] It can be seen from the above embodiments that the combustion chamber of the wood stove is provided with a spiral fire barrier 1, which is larger at the bottom and smaller at the top, making it easier to gather fire and having a strong firepower; the return flue 2 is located on both sides of the fire barrier 1, with one end blocked and the other end open to form a smooth return flue 2 for exhausting smoke, preventing smoke from overflowing and improving the comfort of the kitchen environment; and when a certain high temperature is reached inside the combustion chamber, secondary combustion can be formed when the smoke passes through the return flue 2, thereby achieving sufficient combustion, saving fuel and reducing smoke generation.

[0023] Furthermore, in another embodiment, Figure 1 As shown, in the combustion chamber of the wood-fired stove, the smoke exhaust port 5 is arranged at the rear of the return smoke duct 2, so that the smoke return inlet 21 of the return smoke duct 2 is long enough from the smoke exhaust port 5 to promote the combustion and smooth circulation of smoke.

[0024] In one embodiment, a smokeless wood-burning stove with a fire control system is provided. Figure 1-5 As shown, the smokeless wood-fired stove with a fire control system includes a stove body 10. This unitary structure is made of materials such as refractory bricks and refractory castables, offering excellent thermal insulation. The stove body 10 houses the combustion chamber of the wood-fired stove in the previous embodiment. The smokeless wood-fired stove with a fire control system in this embodiment has three combustion chambers, capable of heating three pots. For example, the rightmost combustion chamber has an air inlet 4 located at the lower right side of the stove body 10, and a fuel inlet 3 located at the upper right side of the stove body 10. Firewood is added through the fuel inlet and burned in the internal fire barrier to heat the pot 7 above. The smokeless wood-fired stove with a fire control system also includes a fire control system and a smoke exhaust system. The fire control system includes a primary air intake valve damper 9 disposed at the air inlet 4 and a movable stove door damper 8 disposed at the fuel inlet 3. Each of the primary air intake valve damper 9 and the stove door damper 8 is provided with an air intake control valve. By adjusting the different air intake control valves on the primary air intake valve damper 9 and the stove door damper 8, the size of the air inlet can be adjusted, thereby controlling the oxygen content in the combustion chamber and adjusting the firepower. The smoke exhaust system includes an internal flue disposed within the stove body 10 and an outdoor chimney 20. The smoke exhaust ports in the three combustion chambers are connected to the outdoor chimney 20 through the internal flue in the stove body 10.

[0025] This smokeless wood-fired stove with a fire control system utilizes a combustion chamber with a fire barrier and a smoke return duct within the stove body 10, along with a smoke exhaust system within the stove body 10. This results in fuel savings, high thermal efficiency, and minimal smoke generation during combustion, reducing environmental pollution and harm to human health. By providing a fire control system comprising a primary air intake valve damper 9 and a stove door damper 8, the firepower can be precisely controlled to meet diverse cooking needs. Furthermore, the firepower control is simple to operate and safe to use.

[0026] Furthermore, in another embodiment, Figure 5 As shown, the primary air intake valve baffle 9 in the smokeless wood-fired stove with a fire control system is provided with a first-speed air intake control valve 91, a second-speed air intake control valve 92, and a third-speed air intake control valve 93, and the stove door baffle 8 is provided with a secondary air intake control valve 81. The first-speed air intake control valve 91, the second-speed air intake control valve 92, and the third-speed air intake control valve 93 on the primary air intake valve baffle 9, and the secondary air intake control valve 81 on the stove door baffle 8 can be opened and closed separately to adjust the amount of incoming air.

[0027] Furthermore, in another embodiment, Figure 3 and Figure 4As shown, the secondary air intake control valve 81 in the smokeless wood-fired stove with a fire control system includes a valve plate 811 disposed on the rear side of the stove door baffle. A guide groove extending left and right is provided on the rear side of the secondary air intake control valve 81. The lower edge of the valve plate 811 is disposed in the guide groove. A toggle lever 812 is provided on the valve plate 811, which passes through the stove door baffle 8. The toggle lever 812 can drive the valve plate 811 to move left and right. A first air intake grille hole is provided on the stove door baffle 8, and a second air intake grille hole is correspondingly provided on the valve plate 811. When the valve plate 811 is moved by the toggle lever 812, when the first and second air intake grille holes overlap, the secondary air intake control valve 81 is fully open. In other states, the valve plate 811 partially blocks the first grille hole.

[0028] The first-gear air intake control valve 91 , the second-gear air intake control valve 92 , and the third-gear air intake control valve 93 on the primary air intake valve baffle 9 have the same structure as the secondary air intake control valve 81 on the stove door baffle 8 .

[0029] Furthermore, in another embodiment, Figure 3 As shown, the stove door baffle 8 in the smokeless wood stove with a fire control system is also provided with a fire-resistant glass observation window 82 for observing the combustion situation inside the combustion chamber. Figure 2 As shown, a strip-shaped platform 102 is provided in the middle of the front side of the stove body 10, which can be used to place the stove door baffle 8.

[0030] Additionally, in another embodiment, Figure 2 As shown, the outdoor chimney 20 in the smokeless wood-fired stove with a fire control system has an internal diameter of 180 to 220 mm and a height of 5 to 7 meters. For example, the chimney 20 can have an internal diameter of 180 mm and a height of 5 meters, or an internal diameter of 200 mm and a height of 6 meters, or an internal diameter of 220 mm and a height of 7 meters. The chimney 20 generally has a horizontal pipe section at the bottom to allow it to pass through the kitchen wall.

[0031] The smoke exhaust system composed of the internal flue and the outdoor chimney 20 naturally discharges the smoke generated by combustion to the outside through the physical suction of the outdoor chimney 20. Among them, the convection of hot air causes the air pressure inside the outdoor chimney 20 to decrease, and a large amount of cold air continuously flows in from the air inlet, ensuring that the smoke in the combustion chamber can be quickly discharged, thereby achieving the effect of no smoke escaping from the stove mouth and no smoke indoors.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smokeless wood-fired stove with a fire control system, characterized by: The vents are formed at the top of the stove body and are used to vent the smoke from the burner to the outside of the stove body, and the vents are used to vent the smoke from the burner to the outside of the stove body. The stove also includes a fire control system and a smoke exhaust system. The fire control system includes a primary air intake valve baffle provided at the air inlet and a movable stove door baffle provided at the fuel inlet. The primary air intake valve baffle and the stove door baffle are respectively provided with air intake control valves. The smoke exhaust system includes an internal flue provided in the stove body and an outdoor chimney. The inner diameter of the outdoor chimney is 180-220 mm and the height is 5-7 m.

2. The smokeless wood-fired stove with a fire control system according to claim 1, characterized in that: A first-gear air intake control valve, a second-gear air intake control valve, and a third-gear air intake control valve are provided on the primary air intake valve baffle, and a secondary air intake control valve is provided on the stove door baffle.

3. The smokeless wood-fired stove with a fire control system according to claim 1, characterized in that: The stove door baffle is also provided with a fire-resistant glass observation window.

4. The smokeless wood-fired stove with a fire control system according to claim 2, characterized in that: The secondary air intake control valve includes a valve plate arranged on the rear side of the stove door baffle, a first air intake grille hole is provided on the stove door baffle, a second air intake grille hole is correspondingly provided on the valve plate, and a toggle rod passing through the stove door baffle is provided on the valve plate. When the first air intake grille hole and the second air intake grille hole overlap during the process of moving the valve plate by the toggle rod, the secondary air intake control valve is fully opened.

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