Biomass heating and cooking multipurpose furnace

Abstract

The invention discloses a biomass heating and cooking multi-purpose stove, and relates to the technical field of biomass heating stoves, the biomass heating and cooking multi-purpose stove comprises a shell, a combustion cavity and a heat exchange cavity are arranged in the shell, a smoke exhaust fan is mounted in the shell, an air inlet of the smoke exhaust fan is communicated with a smoke pipeline, and the other end of the smoke pipeline is communicated with the combustion cavity; the smoke pipeline comprises a smoke pipe, the smoke pipe is arranged in the heat exchange cavity, the two ends of the smoke pipe are both communicated with the combustion cavity, and a first pipeline and a second pipeline are slidably assembled on the two sides of the smoke pipe in the horizontal direction; one end of the first pipeline and one end of the second pipeline are matched with the two ends of the smoke pipe respectively. The two ports of the flue gas pipe are alternately designed into the gas inlets, and the oxygen supply port with the variable area is adopted, so that the oxygen flow can be dynamically adjusted according to flue gas flow and alternate change of the gas inlets of the flue gas pipe, the combustion process is optimized, the combustion efficiency is improved, impurity accumulation is reduced, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of biomass heating stoves, in particular to a multi-purpose biomass heating and cooking stove. Background Art

[0002] Existing biomass heating devices usually adopt a one-way flue gas duct design. Since the flue gas carries a large amount of particulate matter, a dust layer will form on the inner wall of the flue gas duct. These dust and particulate matter will gradually accumulate during long-term use. In severe cases, it may cause pipe blockage, restrict the flow of flue gas, and affect the heat exchange efficiency of the heat exchange system. In addition, the single direction of flue gas flow makes cleaning and maintenance work cumbersome and difficult to completely remove dust. This problem not only reduces the efficiency of the equipment, but also increases the maintenance cost. Based on this, we propose a multi-purpose biomass heating and cooking stove. Summary of the invention

[0003] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides a multi-purpose stove for heating and cooking with biomass.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a biomass heating and cooking multi-purpose stove, comprising an outer shell, a combustion chamber and a heat exchange chamber are arranged inside the outer shell, and the combustion chamber is wrapped in the heat exchange chamber, a smoke exhaust fan is installed inside the outer shell, and an air inlet of the smoke exhaust fan is connected to a smoke pipeline, the other end of the smoke pipeline is connected to the combustion chamber, and the air outlet of the smoke exhaust fan is connected to the outdoors through a pipeline, the smoke pipeline comprises a smoke pipe, the smoke pipe is arranged in the heat exchange chamber and both ends of the smoke pipe are connected to the combustion chamber, and both sides of the smoke pipe are slidably equipped with a first pipe and a second pipe in a horizontal direction, one end of the first pipe and the second pipe are respectively adapted to the two ends of the smoke pipe, and the other ends of the first pipe and the second pipe are both connected to the air inlet of the smoke exhaust fan, the first pipe and the second pipe make synchronous and unidirectional linear reciprocating motions in the horizontal direction and are alternately connected to the first port or the second port of the smoke pipe.

[0005] Preferably, the first pipe or the second pipe is fixedly mounted on a mounting frame, and the mounting frame is slidably assembled in the outer shell along the horizontal direction. The lower ends of the first pipe and the second pipe are both equipped with movable boxes, and a fixed box is installed between the two movable boxes. The movable box is slidably sleeved in the fixed box along the horizontal direction, and the fixed box is communicated with the air inlet of the smoke exhaust fan; the two mounting frames are fixedly connected.

[0006] Preferably, a motor is fixedly installed inside the shell, a turntable is fixedly connected to the motor shaft of the motor, a yoke is eccentrically installed on the lower end surface of the turntable, a slide rod is slidably installed in the horizontal direction below the turntable, a slide rod begins to have a slide groove arranged vertically to the slide rod, and the yoke is slidably installed in the slide groove; the slide rod and the mounting frame are fixedly connected.

[0007] Preferably, the material combustion box includes a bottom plate, which is composed of a plurality of fixed plates and movable plates alternately spliced ​​in the horizontal direction, and the movable plate is slidably assembled on the fixed plate, a through first air hole is opened on the fixed plate, and the cross-section of the first air hole is a structure that is thick at both ends and thin in the middle, a second air hole is opened on the movable plate, and the second air hole has the same size specification as the thickest area in the first air hole, and the overlapping area of ​​the second air hole and the first air hole forms an oxygen supply port; during the switching of the air inlet of the flue gas pipe, the area of ​​the oxygen supply port is reduced; after the switching of the air inlet of the flue gas pipe is completed, the area of ​​the oxygen supply port is restored.

[0008] Preferably, the movable plate is arranged in an inclined manner, and the fixed plate is slidably assembled on the movable plate along the inclined surface of the movable plate; a triangular area is formed between the fixed plate and the adjacent movable plate.

[0009] Preferably, right side plates are installed at both ends of the fixed plate, and the positions of the side plates corresponding to the movable plates are provided with first inclined grooves with the same number as the movable plates, and the first inclined grooves are arranged in parallel with the fixed plate; sliders are installed at both ends of the movable plate, and a driving plate is slidably mounted on the outer side of the side plate in the horizontal direction, and the driving plate is provided with second inclined grooves with the same number as the first inclined grooves, and the second inclined grooves are arranged in an inclined surface perpendicular to the movable plate; the sliders are slidably mounted in the first inclined grooves and the second inclined grooves corresponding to them; the driving plate and the sliding rod are fixedly connected.

[0010] Preferably, a material storage box is installed at the upper end of the shell, and a material delivery pipe is installed at the lower end of the material storage box. The end of the material delivery pipe extends into the combustion chamber, and a material delivery auger is arranged in the material delivery pipe. A material combustion box and an ignition rod are arranged inside the combustion chamber, and the material combustion box is connected to the end of the material delivery pipe, and the ignition rod is located between the material delivery pipe and the material combustion box. An oxygen pipe is installed below the material combustion box, and the other end of the oxygen pipe extends to the outside of the shell and communicates with the indoor room; an air inlet and an air outlet communicating with the heat exchange chamber are provided on the outer surface of the shell, and a cross-flow fan is provided in the heat exchange chamber; a stove eye is provided in the shell at a position directly above the material delivery pipe.

[0011] Preferably, a T-tube is connected to the middle of the smoke pipe through a connecting pipe, the third end of the T-tube is connected to the fixing box through a pipeline, and a valve is installed on the pipeline; the two mounting frames are connected by an electric telescopic rod.

[0012] Preferably, a rack is fixedly mounted on the piston rod of the electric telescopic rod, the rack is slidably assembled in the housing along the horizontal direction, the rack is meshingly connected with a gear, the center of the gear is fixedly connected to a guide plate through a rotating shaft, and the guide plate is located in the combustion chamber.

[0013] Compared with the prior art, the present invention provides a multi-purpose biomass heating and cooking stove, which has the following beneficial effects: (1) In the present invention, during heating operation, the two ports of the smoke pipe are alternately designed as air inlets, so that the flow direction of the smoke in the smoke pipe changes alternately, reducing the deposition of impurities in the smoke pipe, thereby improving the heat exchange efficiency, reducing the maintenance frequency, and ensuring that the equipment maintains a good heating effect for a longer period of time; in addition, the direction of the smoke changes during the flow process, which reduces the speed of straight-line discharge and increases the residence time of the smoke, which is helpful for heat exchange and avoids excessive discharge, thereby ensuring the heat exchange efficiency and maintaining the stability of combustion.

[0014] (2) The overlapping area of ​​the first air hole and the second air hole forms an oxygen supply port, and the area of ​​the oxygen supply port can adjust the oxygen flow rate according to the alternating air intake demand of the flue gas duct. When the air intake of the flue gas duct is switched, the area of ​​the oxygen supply port is reduced, which helps to control the amount of oxygen during the combustion process; and after the alternation is completed, the area is restored to provide a higher oxygen flow rate to support combustion; the area adjustment of the oxygen supply port helps to maintain a stable oxygen supply in the furnace, reduce flame fluctuations caused by excessive or insufficient oxygen, avoid drastic temperature changes or uneven combustion, and thus ensure the smooth operation of the heating process.

[0015] (3) The movable plate and the fixed plate are spliced ​​to form the bottom plate of the material combustion box, and a triangular area is formed between the movable plate and its adjacent fixed plate. Ashes generated after the combustion of biomass fuel are accumulated in the triangular area. The movable plate makes a linear reciprocating motion along the inclined surface of the fixed plate, pushing the ashes accumulated in the triangular area to the next triangular area, thereby realizing the function of automatic ash cleaning; in addition, the triangular area can form an oxygen channel at the bottom of the biomass fuel, thereby increasing the contact area between the biomass fuel and oxygen at the bottom, and facilitating the complete combustion of the biomass fuel.

[0016] (4) During cooking, the two ports of the smoke pipe serve as air inlets at the same time. The smoke is sucked away by the smoke exhaust fan through the T-tube, which reduces the path length of the smoke in the smoke pipe and increases the smoke flow rate. The fast air circulation speed helps to maintain the high temperature and intensity of the flame, thereby ensuring the heat required for cooking.

[0017] (5) During heating operation, the guide plate is tilted toward the direction close to the first pipe, so that the guide plate forms a barrier to the smoke, increases the time the smoke stays in the combustion chamber, and improves the heat exchange efficiency; during cooking operation, the guide plate is tilted toward the direction close to the second pipe, guides the smoke to the port of the smoke pipe, accelerates the circulation of the smoke, and guides the flame to the stove eye, increasing the contact area between the flame and the pot. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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: Figure 1 It is a schematic cross-sectional structure diagram of the entire biomass heating and cooking multi-purpose stove in the embodiment at a first angle; Figure 2 It is a schematic diagram of the cross-sectional structure of the entire biomass heating and cooking multi-purpose stove at a second angle in the embodiment; Figure 3 It is a structural schematic diagram of the entire biomass heating and cooking multi-purpose stove in the embodiment; Figure 4 It is a schematic diagram of the entire biomass heating and cooking multi-purpose stove in the embodiment in a heating state; Figure 5 It is a schematic diagram of the entire biomass heating and cooking multi-purpose stove in the cooking state in the embodiment; Figure 6 It is a structural schematic diagram of the heat exchange chamber in the embodiment; Figure 7 This is a schematic diagram of the assembly of the smoke pipe and the guide plate in the embodiment; Figure 8 This is a schematic diagram of the assembly of the smoke pipe in the embodiment; Fig. 9 It is a schematic diagram of assembling the movable box and the fixed box in the embodiment; Fig.10 It is a schematic diagram of the assembly of the rotating disk and the push rod in the embodiment; Fig.11 This is a schematic diagram of the assembly of the guide plate in the embodiment; Fig.12 It is a structural schematic diagram of the material combustion box in the embodiment; Fig.13 This is a schematic diagram of a state in which the movable plate moves to a maximum distance in the embodiment; Fig.14 It is a schematic diagram of the assembly of the fixed plate in the embodiment; Fig.15 Schematic diagram of the assembly of the movable plate in the embodiment.

[0019] In the figure: 1. Shell; 2. Combustion chamber; 3. Cooker eye; 4. Material storage box; 5. Material delivery pipeline; 6. Material combustion box; 61. Fixed plate; 62. First air hole; 63. Movable plate; 64. Second air hole; 65. Side plate; 66. First chute; 67. Sliding block; 68. Driving plate; 69. Second chute; 7. Heat exchange chamber; 8. Smoke pipe; 81. Connecting pipe; 811. T-shaped pipe; 812. Valve; 82. First pipe; 83. Second pipe; 84. Movable box; 85. Fixed box; 86. Mounting frame; 861. Motor; 862. Turntable; 863. Yoke; 864. Sliding rod; 865. Sliding slot; 87. Electric telescopic rod; 9. Smoke exhaust fan; 10. Air inlet; 11. Crossflow fan; 12. Air outlet; 13. Ignition rod; 14. Oxygen tube; 15. guide plate; 151. gear; 152. rack. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention. Embodiment 1

[0021] This embodiment proposes a multi-purpose stove for heating and cooking with biomass, such as Figures 1 to 14 As shown, it includes an outer shell 1, a combustion chamber 2 and a heat exchange chamber 7 are arranged inside the outer shell 1, and the combustion chamber 2 is wrapped in the heat exchange chamber 7, a storage box 4 is installed on the upper end of the outer shell 1, and a material delivery pipe 5 is installed in communication with the lower end discharge port of the storage box 4, and the end of the material delivery pipe 5 extends into the combustion chamber 2, and a material delivery auger is arranged in the material delivery pipe 5, a material combustion box 6 and an ignition rod 13 are arranged inside the combustion chamber 2, the material combustion box 6 is connected to the end of the material delivery pipe 5, and the ignition rod 13 is located between the material delivery pipe 5 and the material combustion box 6, an oxygen pipe 14 is installed below the material combustion box 6, and the other end of the oxygen pipe 14 extends to the outside of the outer shell 1 and communicates with the room, a smoke exhaust fan 9 is installed inside the outer shell 1, and a smoke pipeline is installed in communication with the air inlet of the smoke exhaust fan 9, and the smoke pipeline The other end is communicated with the combustion chamber 2, and the outlet of the smoke exhaust fan 9 is communicated with the outdoors through a pipe. The outer surface of the shell 1 is provided with an air inlet 10 and an air outlet 12 communicated with the heat exchange chamber 7, and a cross-flow fan 11 is arranged in the heat exchange chamber 7; the biomass fuel stored in the storage box 4 is transported to the material combustion box 6 through the feed pipe 5, and the biomass fuel is ignited by the ignition rod 13. The high-temperature flue gas generated by the combustion gathers in the combustion chamber 2, and the smoke exhaust fan 9 is started to suck out the high-temperature flue gas through the flue gas pipeline and discharge it to the outdoors. At the same time, the oxygen in the room is input to the bottom of the material combustion box 6 through the oxygen pipe 14, so as to help the biomass fuel to be fully burned. A stove eye 3 is provided in the shell 1 at a position corresponding to the top of the feed pipe 5, and the cooker can be placed on the stove eye 3 for cooking.

[0022] When heating is performed: the stove eye 3 is closed, and the cross-flow fan 11 is started. The cross-flow fan 11 draws the low-temperature air in the room into the heat exchange chamber 7 through the air inlet 10. The low-temperature air in the room exchanges heat with the flue gas pipeline, and the heated air is discharged back into the room through the air outlet 12. During the entire heat exchange process, the flue gas moves along a fixed path. However, the flue gas generated by biomass fuel often contains more particulate matter and impurities. These particulate matter will be deposited on the inner wall of the flue gas pipeline as the flue gas flows. As time goes by, the carbon deposits and dust in the flue gas pipeline gradually increase, which not only affects the flow of the flue gas, but also affects the heat dissipation of the flue gas. It will also reduce the heat exchange efficiency, thereby causing a decrease in heating efficiency and increasing energy consumption. For this reason, the present invention designs the flue gas flow direction in the flue gas pipeline to be alternating, so as to avoid the flue gas flowing in the same direction for a long time. This can reduce the residence time of the flue gas on the pipeline wall, thereby reducing the chance of impurity deposition. Specifically: the flue gas pipeline includes a flue gas pipe 8, which is arranged in the heat exchange chamber 7 and both ends of the flue gas pipe 8 are connected to the combustion chamber 2. In this embodiment, the flue gas pipe 8 is in a U-shaped structure and is arranged in a vertical direction. Both sides of the flue gas pipe 8 are slidably equipped with a first pipe 82 and a second pipe 82 in a horizontal direction. The first pipe 82 and the second pipe 83 are respectively matched with the two ends of the smoke pipe 8, and the other ends of the first pipe 82 and the second pipe 83 are both connected to the air inlet of the smoke exhaust fan 9. The first pipe 82 and the second pipe 83 make synchronous and unidirectional linear reciprocating motions in the horizontal direction and are alternately connected to the first port or the second port of the smoke pipe 8. In the initial state, the first port of the smoke pipe 8 is connected to the combustion chamber 2, and the second port is connected to the second pipe 83. The smoke in the combustion chamber 2 is discharged to the outside through the smoke pipe 8 and the second pipe 83 in turn. When the first pipe 82 and the second pipe 83 are connected, the smoke in the combustion chamber 2 is discharged to the outside through the smoke pipe 8 and the second pipe 83. After the pipe 83 moves horizontally to the other side, the first port of the smoke pipe 8 is connected to the first pipe 82, the second port of the smoke pipe 8 is connected to the combustion chamber 2, and the smoke in the combustion chamber 2 is discharged to the outside through the first pipe 82 in turn; the first pipe 82 and the second pipe 83 are alternately connected to the smoke pipe 8, and the air inlet of the smoke pipe 8 changes alternately, so that the flow direction of the smoke in the smoke pipe 8 changes, effectively reducing the accumulation of impurities on the inner wall of the heat exchange chamber 7; and the direction of the smoke changes during the flow process, which reduces the speed of linear discharge, increases the residence time of the smoke, and improves the heat exchange efficiency.

[0023] Specifically, the first pipe 82 and the second pipe 83 are fixedly mounted on two mounting frames 86 respectively, and the mounting frames 86 are slidably assembled in the outer shell 1 along the horizontal direction. The lower ends of the first pipe 82 and the second pipe 83 are both installed with movable boxes 84, and a fixed box 85 is installed between the two movable boxes 84. The movable box 84 is slidably sleeved in the fixed box 85 along the horizontal direction, and the fixed box 85 is communicated with the air inlet of the smoke exhaust fan 9; the two mounting frames 86 are fixedly connected.

[0024] On the basis of the above scheme, the present embodiment adopts a slewing yoke mechanism to realize the linear reciprocating motion of the first pipe 82 and the second pipe 83 in the horizontal direction. Specifically, a motor 861 is fixedly installed inside the housing 1, and the motor shaft of the motor 861 is fixedly connected with a turntable 862, and a yoke 863 is eccentrically installed on the lower end surface of the turntable 862. A slide bar 864 is slidably installed in the horizontal direction below the turntable 862, and a slide groove 865 is provided on the slide bar 864 and is vertically arranged with the slide bar 864. The yoke 863 is slidably installed in the slide groove 865, and the slide bar 864 is fixedly connected with the mounting frame 86. When the motor 861 is started, the motor shaft of the motor 861 drives the turntable 862 to rotate, and the yoke 863 also slides in the slide groove 865, converting the rotational motion of the yoke 863 into the linear reciprocating motion of the slide bar 864 in the horizontal direction.

[0025] During the switching of the air inlet of the flue pipe 8, the direction of flue gas flow changes, resulting in changes in oxygen demand. If the oxygen supply flow rate fails to adapt to the change in flue gas flow rate, it may cause excessive or insufficient oxygen supply in certain stages, thereby affecting the completeness of combustion; for example: if there is too much oxygen, it may cause heat waste; if there is too little oxygen, combustion is incomplete, and smoke, carbon particles or other harmful substances may be produced, resulting in increased pollutant emissions; for this reason, the present invention designs the oxygen supply to change with the direction of the flue gas flow. When the air inlet of the flue pipe 8 is switched, the oxygen supply is reduced, which helps to control the amount of oxygen in the combustion process; and after the alternation is completed, the area is restored to provide a higher oxygen flow rate to support combustion. This flexible adjustment helps to maintain the stability of combustion and ensure that the oxygen in the combustion process is not excessive or insufficient, thereby improving combustion efficiency and heat exchange effects.

[0026] The present invention arranges the oxygen supply port on the material combustion box 6. Specifically, the material combustion box 6 includes a bottom plate and a vertical plate. The vertical plates are fixed on both sides of the bottom plate. In this embodiment, the vertical plate is a cavity structure and a leakage hole is arranged on one side close to the bottom plate. The vertical plate is connected to the room through a pipeline to introduce outdoor air to form a secondary oxygen supply. The bottom plate is composed of a plurality of fixed plates 61 and movable plates 63 alternately spliced ​​in the horizontal direction, and the movable plate 63 is slidably assembled on the fixed plate 61. A through first air hole 62 is provided on the fixed plate 61, and the cross-section of the first air hole 62 is a structure of thick at both ends and thin in the middle. A second air hole 64 is provided on the movable plate 63, and the size specification of the second air hole 64 is the same as that of the thickest area of ​​the first air hole 62. The overlapping area of ​​the second air hole 64 and the first air hole 62 forms the oxygen supply port. During the switching process of the air inlet of the flue gas pipe 8, the area of ​​the oxygen supply port is reduced. After the air inlet of the flue gas pipe 8 is switched, After completion, the area of ​​the oxygen supply port is restored; in the initial state, the first port of the flue pipe 8 is communicated with the combustion chamber 2, and the second port of the flue pipe 8 is communicated with the second pipe 83. At this time, the second air hole 64 just completely overlaps with the thickest area on the left side of the first air hole 62, and the area of ​​the oxygen supply port is in the maximum state; when the flue pipe 8 switches the air inlet, the second pipe 83 and the second pipe 83 move synchronously to the right, and the movable plate 63 moves synchronously to the right in the horizontal direction, so that the area of ​​the overlapping area of ​​the second air hole 64 and the first air hole 62 is reduced, that is, the area of ​​the oxygen supply port is reduced; when the second port of the flue pipe 8 is communicated with the combustion chamber 2, and the first port of the flue pipe 8 is communicated with the first pipe 82, the movable plate 63 moves to the right to the maximum distance, at this time, the second air hole 64 just completely overlaps with the thickest area on the right side of the first air hole 62, and the area of ​​the oxygen supply port is restored to the maximum state.

[0027] On the basis of the above scheme, the present invention designs the movable plate 63 to be inclined, and the fixed plate 61 is slidably assembled on the movable plate 63 along the inclined surface direction of the movable plate 63. In this embodiment, the movable plate 63 is inclined with the left side lower and the right side higher, and a triangular area is formed between the fixed plate 61 and the adjacent movable plate 63; the biomass material falls and gathers on the triangular area, and the ashes produced after combustion fall into the triangular area. When the movable plate 63 moves to the right along the inclined direction of the fixed plate 61, the ashes in the triangular area are pushed to the adjacent triangular area to avoid the accumulation of ashes. In addition, since the biomass material has a rod-like structure, when the biomass material falls and gathers on the triangular area, part of the biomass material will be placed on the triangular area. At this time, the triangular area forms an air flow channel, which increases the contact area between the biomass material at the bottom and oxygen, which is conducive to the complete combustion of the biomass material and reduces the formation of impurities.

[0028] In order to save manufacturing costs, the present invention also uses a slewing yoke structure to drive the linear reciprocating motion of the movable plate 63 in the direction of the inclined surface of the fixed plate 61. Specifically, the fixed plate 61 is equipped with side plates 65 at both ends, and the side plates 65 are provided with the same number of first inclined slots 66 as the movable plate 63 at the position corresponding to the movable plate 63, and the first inclined slots 66 are arranged parallel to the fixed plate 61; the movable plate 63 is equipped with sliders 67 at both ends, and the outer side of the side plates 65 is slidably mounted with a driving plate 68 in the horizontal direction, and the driving plate 68 is provided with the same number of second inclined slots 69 as the first inclined slots 66, and the second inclined slots 69 are arranged perpendicular to the inclined surface of the movable plate 63; the slider 67 is slidably mounted in the first inclined slots 66 and the second inclined slots 69 corresponding to it; the driving plate 68 is fixedly connected to the slide bar 864. The driving plate 68 performs linear reciprocating motion in the horizontal direction along with the slewing yoke structure, and then drives the fixed plate 61 to perform linear reciprocating motion along the inclined surface of the movable plate 63 through the first inclined slots 66 and the second inclined slots 69. Embodiment 2

[0029] like Figure 4 , Figure 5 , Figure 8 and Fig.11 As shown, this embodiment and the first embodiment adopt the same inventive concept, and the difference between this embodiment and the first embodiment is that: a T-tube 811 is sleeved on the middle part of the smoke pipe 8 through a connecting pipe 81, and the third end of the T-tube 811 is connected to the fixing box 85 through a pipeline, and a valve 812 is installed on the pipeline; the two mounting frames 86 are connected by an electric telescopic rod 87.

[0030] During cooking, the flame is mainly concentrated on the pot. The combustion process requires sufficient oxygen to ensure the stability of the flame and high-temperature output, and the exhaust speed is also accelerated. At this time, the electric telescopic rod 87 is started, and the piston rod of the electric telescopic rod 87 is extended and drives the movable box 84 to move to the right, so that the two ports of the smoke pipe 8 are connected to the combustion chamber 2 at the same time, and then the valve 812 is opened, so that the smoke in the combustion chamber 2 enters the fixed box 85 through the two ports of the smoke pipe 8 at the same time, reducing the movement length of the smoke in the pipe and increasing the exhaust speed. It should be noted that when starting the electric telescopic rod 87, it is necessary to ensure that the first port of the smoke pipe 8 is connected to the combustion chamber 2, and the second port of the smoke pipe 8 is connected to the second pipe 83.

[0031] On the basis of the above scheme, the present invention has a rack 152 fixedly mounted on the piston rod of the electric telescopic rod 87, the rack 152 is slidably assembled in the housing 1 along the horizontal direction, the rack 152 is meshedly connected with a gear 151, the center of the gear 151 is fixedly connected with a guide plate 15 through a rotating shaft, and the guide plate 15 is located in the combustion chamber 2. During heating operation, the guide plate 15 is inclined toward the direction close to the first pipe 82, forming a barrier for the smoke generated by combustion, prolonging the time of the smoke in the combustion chamber 2, and improving the heat exchange efficiency; during cooking operation, the piston rod of the electric telescopic rod 87 is extended, and the rack 152 also moves to the right, and drives the gear 151 to rotate, and the gear 151 drives the guide plate 15 to rotate toward the direction close to the second pipe 83, guiding the smoke generated by combustion into the port of the smoke pipe 8, and at the same time guiding the flame to the bottom of the stove eye 3.

[0032] In the description of the present invention, the terms "first", "second", "another", and "yet another" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A biomass heating and cooking multipurpose stove, comprising a shell (1), wherein a combustion chamber (2) and a heat exchange chamber (7) are arranged inside the shell (1), and the combustion chamber (2) is wrapped in the heat exchange chamber (7), and a smoke exhaust fan (9) is installed inside the shell (1), and an air inlet of the smoke exhaust fan (9) is connected to a smoke pipeline, and the other end of the smoke pipeline is connected to the combustion chamber (2), and the air outlet of the smoke exhaust fan (9) is connected to the outside through a pipeline, characterized in that: The flue gas pipeline comprises a flue gas pipe (8), which is arranged in a heat exchange chamber (7) and both ends of the flue gas pipe (8) are in communication with the combustion chamber (2); both sides of the flue gas pipe (8) are slidably mounted with a first pipe (82) and a second pipe (83) in a horizontal direction; one end of the first pipe (82) and the second pipe (83) are respectively matched with the two ends of the flue gas pipe (8); the other ends of the first pipe (82) and the second pipe (83) are in communication with an air inlet of a smoke exhaust fan (9); the first pipe (82) and the second pipe (83) perform synchronous and unidirectional linear reciprocating motion in a horizontal direction and are alternately in communication with a first port or a second port of the flue gas pipe (8).

2. The multi-purpose biomass heating and cooking stove according to claim 1 is characterized in that: The first pipe (82) and the second pipe (83) are respectively fixedly mounted on two mounting frames (86), the mounting frames (86) are slidably assembled in the housing (1) along the horizontal direction, movable boxes (84) are installed at the lower ends of the first pipe (82) and the second pipe (83), a fixed box (85) is installed between the two movable boxes (84), the movable box (84) is slidably sleeved in the fixed box (85) along the horizontal direction, and the fixed box (85) is communicated with the air inlet of the smoke exhaust fan (9); the two mounting frames (86) are fixedly connected.

3. The multi-purpose biomass heating and cooking stove according to claim 2 is characterized in that: A motor (861) is fixedly installed inside the housing (1); a motor shaft of the motor (861) is fixedly connected to a turntable (862); a yoke (863) is eccentrically installed on the lower end surface of the turntable (862); a slide bar (864) is slidably installed in a horizontal direction below the turntable (862); a slide groove (865) is provided on the slide bar (864) and is vertically arranged with the slide bar (864); the yoke (863) is slidably installed in the slide groove (865); and the slide bar (864) and the mounting frame (86) are fixedly connected.

4. The multi-purpose biomass heating and cooking stove according to any one of claims 1 to 3, characterized in that: The material combustion box (6) comprises a bottom plate, which is composed of a plurality of fixed plates (61) and movable plates (63) alternately spliced ​​in a horizontal direction, and the movable plate (63) is slidably assembled on the fixed plate (61), a through first air hole (62) is opened on the fixed plate (61), and the cross section of the first air hole (62) is a structure with thick ends and thin middle, a second air hole (64) is opened on the movable plate (63), and the size specification of the second air hole (64) is the same as that of the thickest area of ​​the first air hole (62), and the overlapping area of ​​the second air hole (64) and the first air hole (62) forms an oxygen supply port; during the switching process of the air inlet of the flue gas pipe (8), the area of ​​the oxygen supply port is reduced; after the switching of the air inlet of the flue gas pipe (8) is completed, the area of ​​the oxygen supply port is restored.

5. The multi-purpose biomass heating and cooking stove according to claim 4 is characterized in that: The movable plate (63) is arranged in an inclined manner, and the fixed plate (61) is slidably assembled on the movable plate (63) along the inclined surface direction of the movable plate (63); a triangular area is formed between the fixed plate (61) and the adjacent movable plate (63).

6. The multi-purpose biomass heating and cooking stove according to claim 5 is characterized in that: The fixed plate (61) is provided with right side plates (65) at both ends, and the side plates (65) are provided with first inclined grooves (66) having the same number as the movable plate (63) at positions corresponding to the movable plate (63), and the first inclined grooves (66) are arranged in parallel with the fixed plate (61); sliders (67) are provided at both ends of the movable plate (63); a driving plate (68) is slidably mounted on the outer side of the side plates (65) in a horizontal direction, and the driving plate (68) is provided with second inclined grooves (69) having the same number as the first inclined grooves (66), and the second inclined grooves (69) are arranged in an inclined surface perpendicular to the movable plate (63); the sliders (67) are slidably mounted in the first inclined grooves (66) and the second inclined grooves (69) corresponding to the sliders (67); and the driving plate (68) and the slide bar (864) are fixedly connected.

7. The multi-purpose biomass heating and cooking stove according to claim 1 is characterized in that: A material storage box (4) is installed at the upper end of the outer shell (1), and a material delivery pipe (5) is installed at the lower end of the material storage box (4) through a material outlet. The end of the material delivery pipe (5) extends into the combustion chamber (2), and a material delivery auger is arranged in the material delivery pipe (5). A material combustion box (6) and an ignition rod (13) are arranged inside the combustion chamber (2). The material combustion box (6) is connected to the end of the material delivery pipe (5), and the ignition rod (13) is located between the material delivery pipe (5) and the material combustion box (6). An oxygen pipe (14) is installed below the material combustion box (6), and the other end of the oxygen pipe (14) extends to the outside of the outer shell (1) and communicates with the room. An air inlet (10) and an air outlet (12) communicating with the heat exchange chamber (7) are provided on the outer surface of the outer shell (1), and a cross-flow fan (11) is arranged in the heat exchange chamber (7). A stove eye (3) is provided in the outer shell (1) at a position directly above the material delivery pipe (5).

8. The multi-purpose biomass heating and cooking stove according to claim 2 is characterized in that: A T-shaped tube (811) is sleeved on the middle of the smoke pipe (8) via a connecting tube (81); a third end of the T-shaped tube (811) is connected to a fixing box (85) via a pipeline, and a valve (812) is installed on the pipeline; the two mounting frames (86) are connected via an electric telescopic rod (87).

9. The multi-purpose biomass heating and cooking stove according to claim 8, characterized in that: A rack (152) is fixedly mounted on the piston rod of the electric telescopic rod (87). The rack (152) is slidably mounted in the housing (1) in a horizontal direction. The rack (152) is meshingly connected to a gear (151). The center of the gear (151) is fixedly connected to a guide plate (15) via a rotating shaft. The guide plate (155) is located in the combustion chamber (2).

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