Granule furnace

Abstract

The utility model relates to a kind of granule furnaces, comprising: furnace body, burner, first grill and fire baffle are equipped in it, wherein, the fire baffle is located between the burner and the first grill, and the fire baffle periphery and the furnace body lateral wall between there is smoke gap;First smoke guide plate, set in the furnace body rear side and along upward extension;Upper cover, with the furnace body form relatively rotatable arrangement, the upper cover is used to cover set in the furnace body and relatively the furnace body is unfolded;When the upper cover cover set in the furnace body, the upper cover, first smoke guide plate and the furnace body form smoke chamber, the rear end of the upper cover and the upper edge of the first smoke guide plate are misaligned in horizontal direction and form between the two exhaust gap with the smoke chamber communication;The upper edge of the first smoke guide plate is located between the exhaust gap and the smoke chamber.The granule furnace provided by the utility model does not need additional facilities chimney and other exhaust structure, and the structure compactness is high, and the occupied space is small.

Description

Technical Field

[0001] This utility model relates to the field of oven technology, and in particular to a pellet oven. Background Technology

[0002] A pellet oven is a device that uses pellet fuel to cook food. The pellet fuel used is mostly biomass pellet fuel made from materials such as sawdust and straw. This material produces fewer pollutants when burned, making it more environmentally friendly than traditional fuels like coal. It also heats up quickly and has high heating efficiency. During combustion, the fuel in a pellet oven produces waste gases such as carbon dioxide, water vapor, particulate matter, and carbon monoxide. Timely and safe removal of these waste gases not only avoids the risk of carbon monoxide poisoning but also ensures a stable airflow through the exhaust system, guaranteeing a sufficient supply of oxygen for combustion and maintaining high efficiency.

[0003] The exhaust structure of a pellet furnace typically consists of a flue pipe, a chimney, a windproof cap, and connectors. The flue pipe connects the internal space of the furnace to the chimney and discharges the exhaust gas into the chimney. The chimney is usually a vertical pipe extending to the external environment. It uses the thermal pressure effect to create a natural suction force to drive the exhaust gas out. This exhaust structure has strict requirements on size and installation location. It usually requires a large space and the installation location is relatively fixed, which affects the flexibility of the internal structure of the pellet furnace. Utility Model Content

[0004] The first technical problem solved by this utility model is to provide a pellet furnace that can effectively improve structural compactness and reduce the space occupied.

[0005] The first technical problem mentioned above is solved by the following technical solution:

[0006] A pellet furnace, comprising:

[0007] The furnace body contains a burner, a first grill and a baffle plate. The baffle plate is located between the burner and the first grill, and there is a smoke outlet gap between the baffle plate and the side wall of the furnace body.

[0008] The first smoke guide plate is disposed on the rear side of the furnace body and extends upward;

[0009] The upper cover is rotatably configured relative to the furnace body, and the upper cover is used to cover the furnace body and unfold relative to the furnace body;

[0010] When the upper cover is placed on the furnace body, the upper cover, the first smoke guide plate and the furnace body enclose a smoke chamber. The rear end of the upper cover and the upper edge of the first smoke guide plate are offset in the horizontal direction and a smoke exhaust gap communicating with the smoke chamber is formed between them. The upper edge of the first smoke guide plate is located between the smoke exhaust gap and the smoke chamber.

[0011] The pellet furnace described in this utility model has the following advantages compared with the prior art:

[0012] The gaps around the baffle plate allow the flue gas generated by the burner to enter the smoking chamber through the smoke outlet gap, forming a circulating airflow. The first smoke guide plate is located on the rear side of the furnace body and extends vertically upward, guiding the flue gas upward along the rear side of the furnace body and directing the smoke upward to the top of the upper cover, forming a directional flue gas flow path. The flue gas at the top of the upper cover is blocked and flows back into the smoking chamber, forming a cycle until there is enough smoke inside the smoking chamber. When the gas inside the furnace is under pressure, it can be discharged through the smoke outlet gap between the rear end of the upper cover and the upper end of the smoke guide plate. While ensuring the smoking effect, there is no need to set up an additional protruding chimney structure, which can reduce the overall height of the furnace body and reduce the lateral space occupied by the furnace body. The upper cover and the furnace body are rotatably connected, and no space needs to be reserved for the installation of a chimney when opening. The pellet furnace provided by this utility model can achieve automatic smoke discharge while ensuring the smoking effect, reducing size and space occupation, eliminating the need for a separate chimney, and saving manufacturing costs.

[0013] In one embodiment, when the upper cover is placed on the furnace body, in the vertical direction, the upper edge of the first smoke guide plate is lower than the rear edge of the upper cover, the height difference h between the upper edge of the first smoke guide plate and the rear edge of the upper cover is ≤10mm, or the upper edge of the first smoke guide plate is flush with the rear edge of the upper cover.

[0014] In one embodiment, the horizontal distance d between the rear edge of the top cover and the first smoke guide plate is ≤15mm.

[0015] In one embodiment, the first smoke guide plate is formed with a smoke guide curved surface protruding toward the rear side of the furnace body, and the front end of the upper cover is an arc-shaped structure that protrudes toward the outside of the furnace body and tilts toward the rear side of the furnace body.

[0016] In one embodiment, a second smoke guide plate and a third smoke guide plate extending vertically upward are respectively provided on both sides of the first smoke guide plate, and the second smoke guide plate and the third smoke guide plate are hinged to the upper cover.

[0017] In one embodiment, the pellet oven further includes a second grill, and a support member is provided on the side of the second smoke guide plate and the third smoke guide plate facing the interior of the oven body. The support member extends horizontally into the interior of the oven body from the second smoke guide plate and the third smoke guide plate, and the support member is used to support the second grill.

[0018] In one embodiment, a baffle plate is provided at the rear end of the top cover, and the baffle plate is higher than the upper edge of the first smoke guide plate.

[0019] In one embodiment, a first reinforcing portion is formed on both side walls of the top cover, the first reinforcing portion being recessed from the side walls of the top cover into the interior of the furnace body.

[0020] In one embodiment, the transition surface between the first reinforcing part and the side wall of the upper cover is an inclined surface.

[0021] In one embodiment, a second reinforcing portion is formed on both the second and third smoke guide plates, and each of the second reinforcing portions is recessed into the inner side of the furnace body from the second and third smoke guide plates respectively. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of a pellet furnace with the top cover in an open state, according to an embodiment of the present invention;

[0024] Figure 2 A side view of the pellet furnace with its top cover in a closed state, according to an embodiment of the present invention.

[0025] Figure 3 A schematic diagram of the rear structure of a pellet furnace with its top cover in a closed state, according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the internal structure of a pellet furnace with a second baking rack installed, according to an embodiment of the present invention.

[0027] Figure 5 A schematic diagram of the internal structure of a pellet furnace with its top cover in a closed state, according to an embodiment of the present invention.

[0028] Figure 6 for Figure 5A magnified view of a section at point A in the middle;

[0029] To make the above and other objects, features, advantages and embodiments of this utility model more apparent and understandable, the appended symbols are explained as follows:

[0030] 100. Furnace body; 110. Burner; 120. First grill; 130. Fire baffle; 140. Smoke chamber; 141. Smoke exhaust gap; 200. Top cover; 210. Water baffle; 220. First reinforcing part; 300. First smoke guide plate; 400. Second smoke guide plate; 410. Second reinforcing part; 500. Third smoke guide plate; 600. Second grill; 700. Support component. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] Traditional outdoor pellet ovens are mostly cylindrical, enclosed structures. The flue gas produced during combustion is typically discharged through a chimney. This makes the structure of traditional pellet ovens and their chimneys relatively fixed, making it difficult to adapt their shape or internal structure to diverse usage needs. Furthermore, the chimneys are difficult to manufacture, have poor optimization effects, and occupy a large amount of space. (See also...) Figures 1-6 An embodiment of this utility model provides a pellet furnace to address the above-mentioned problems, comprising:

[0038] The furnace body 100 is provided with a burner 110, a first grill 120 and a baffle plate 130. The baffle plate 130 is located between the burner 110 and the first grill 120, and there is a smoke outlet gap between the baffle plate 130 and the side wall of the furnace body 100.

[0039] The first smoke guide plate 300 is disposed on the rear side of the furnace body 100 and extends upward;

[0040] The upper cover 200 is rotatably configured relative to the furnace body 100. The upper cover 200 is used to cover the furnace body 100 and to unfold relative to the furnace body 100.

[0041] When the upper cover 200 is placed on the furnace body 100, the upper cover 200, the first smoke guide plate 300 and the furnace body 100 enclose a smoke chamber 140. The rear end of the upper cover 200 and the upper edge of the first smoke guide plate 300 are horizontally offset and a smoke exhaust gap 141 communicating with the smoke chamber 140 is formed between them. The upper edge of the first smoke guide plate 300 is located between the smoke exhaust gap and the smoke chamber 140.

[0042] The pellet oven's outer shell is typically made of metal, and the burner 110 refers to the combustion container for the pellet fuel. The grill rack is a support used in the pellet oven to hold food. A baffle plate 130 is positioned between the burner 110 and the first grill rack 120, with gaps around its edges against the side walls of the oven body 100. This baffle plate blocks the high-temperature flames directly emitted by the burner 110, preventing localized scorching of the food on the grill and allowing heat to diffuse evenly into the smoke chamber 140 through the gaps. The gaps also guide the circulation of heat and smoke within the oven, improving heating uniformity. When the top cover 200 is closed, the enclosed space formed by the top cover and the oven body 100 constitutes the smoke chamber 140. The smoke and hot air generated by the burner 110 are confined within the smoke chamber 140, baking the food. The first smoke guide plate 300 is installed on the rear side of the furnace body 100. The rear side of the furnace body 100 refers to the side of the pellet furnace away from the operator when in use, while the side closer to the operator is the front side. By placing the first smoke guide plate 300 on the rear side of the furnace body 100, the smoke can be guided to flow in the direction of the exhaust gap 141. By reasonably setting the size of the exhaust gap 141, the air pressure and exhaust speed when the smoke is discharged can be controlled. Exhausting smoke through the exhaust gap 141 eliminates the need for protruding structures such as chimneys. There is no need to reserve installation space for chimneys during installation, which can reduce the size and space occupied by the pellet furnace and save manufacturing costs.

[0043] The pellet furnace described in this utility model has the following advantages compared with the prior art:

[0044] The gaps around the baffle plate allow the flue gas generated by the burner to enter the smoking chamber through the smoke outlet gap, forming a circulating airflow. The first smoke guide plate is located on the rear side of the furnace body and extends vertically upward, guiding the flue gas upward along the rear side of the furnace body and directing the smoke upward to the top of the upper cover, forming a directional flue gas flow path. The flue gas at the top of the upper cover is blocked and flows back into the smoking chamber, forming a cycle until there is enough smoke inside the smoking chamber. When the gas inside the furnace is under pressure, it can be discharged through the smoke outlet gap between the rear end of the upper cover and the upper end of the smoke guide plate. While ensuring the smoking effect, there is no need to set up an additional protruding chimney structure, which can reduce the overall height of the furnace body and reduce the lateral space occupied by the furnace body. The upper cover and the furnace body are rotatably connected, and no space needs to be reserved for the installation of a chimney when opening. The pellet furnace provided by this utility model can achieve automatic smoke discharge while ensuring the smoking effect, reducing size and space occupation, eliminating the need for a separate chimney, and saving manufacturing costs.

[0045] In one embodiment, such as Figure 6 As shown, when the upper cover 200 is installed on the furnace body 100, in the vertical direction, the upper edge of the first smoke guide plate 300 is lower than the rear edge of the upper cover 200, and the height difference h between the upper edge of the first smoke guide plate 300 and the rear edge of the upper cover 200 is ≤10mm, or the upper edge of the first smoke guide plate 300 is flush with the rear edge of the upper cover 200. Here, the upper edge of the first smoke guide plate 300 refers to the edge of the first smoke guide plate 300 at its highest point in the vertical direction, and the rear edge of the upper cover 200 refers to the edge of the upper cover 200 located at the rear of the furnace body 100. If the upper edge of the first smoke guide plate 300 is higher than the rear edge of the upper cover 200, it will obstruct the exhaust of smoke and affect the smooth exhaust of smoke. Therefore, setting the upper edge of the first smoke guide plate 300 to be lower than or flush with the rear edge of the upper cover 200 can make the exhaust of smoke smoother. However, if the height difference between the two is too large, the food in the smoking chamber 140 will not be fully smoked and will exhaust smoke. Therefore, controlling the height difference between the two to less than or equal to 10mm can control the exhaust speed of smoke while ensuring smooth exhaust of smoke, so that the food in the oven can be fully heated.

[0046] In one embodiment, such as Figure 6 As shown, when the upper cover 200 is placed on the furnace body 100, the horizontal distance d of the exhaust gap 141 is ≤15mm in the horizontal direction. If the horizontal distance between the rear edge of the upper cover 200 and the first smoke guide plate 300 is too large, it will accelerate the exhaust speed, resulting in excessive smoke loss and insufficient circulation within the smoking chamber 140, thus affecting the smoking effect of the food. Therefore, setting the horizontal distance between the rear edge of the upper cover 200 and the first smoke guide plate 300 to less than or equal to 15mm allows the smoke to circulate fully within the smoking chamber 140, ensuring that the food is fully heated while maintaining the efficiency of smoke exhaust.

[0047] In one embodiment, such as Figures 1-6 As shown, the first smoke guide plate 300 has a smoke guide curved surface protruding towards the rear side of the furnace body 100, and the front end of the upper cover 200 is an arc-shaped structure that protrudes outward from the furnace body 100 and tilts towards the rear side of the furnace body 100. The cross-sectional shape of the first smoke guide plate 300 can be arc-shaped, polygonal, or an irregular curve, etc., as long as its shape can guide the flue gas upward; this application does not limit this. When the first smoke guide plate 300 is an arc-shaped structure protruding towards the rear of the oven body 100, the flue gas flows upward along the first smoke guide plate 300 and also tends to flow towards the front of the oven body 100. This can promote the flow of flue gas from the rear of the oven body 100 to the front. The front end of the upper cover 200 protrudes outward from the oven body 100 and tilts towards the rear of the oven body 100. This can guide the smoke flowing out from the gap between the first smoke guide plate 300 and the upper cover 200 to flow downward along the arc and tilt direction of the upper cover 200. The rising flue gas from the front of the oven body 100 will flow towards the rear and middle of the oven body 100 under the action of the upper cover 200. The rising flue gas from the front and rear of the oven body 100 gathers at the top of the grill and forms a vortex. This can promote the circulation of flue gas in the smoking chamber 140 and prolong the residence time of the airflow around the food, so that the food in different positions can be fully heated.

[0048] In one embodiment, such as Figure 1 As shown, a second smoke guide plate 400 and a third smoke guide plate 500 extending vertically upward are respectively provided on both sides of the first smoke guide plate 300. The second smoke guide plate 400 and the third smoke guide plate 500 are hinged to the upper cover 200. The second smoke guide plate 400 and the third smoke guide plate 500 are provided on both sides of the first smoke guide plate 300 and hinged to the upper cover 200. They not only guide the flue gas to flow upward from both sides of the furnace body 100, promoting the circulation of the flue gas, but also provide an installation base for the upper cover 200. There is no need to set up additional support components to fix the upper cover 200, thereby making the structure of the pellet furnace more compact.

[0049] In one embodiment, such as Figure 1 and Figure 5 The pellet oven also includes a second grill 600. A support member 700 is provided on the side of the second smoke guide plate 400 and the third smoke guide plate 500 facing the interior of the oven body 100. The support member 700 extends horizontally into the oven body 100 from the second smoke guide plate 400 and the third smoke guide plate 500, and supports the second grill 600. As shown, the support member 700 can be a horizontal plate structure. While supporting the second grill, it can also block the rising smoke from both sides of the smoking chamber 140, promoting the smoke to flow towards the center of the smoking chamber 140 and improving the smoking effect of the food.

[0050] In one embodiment, such as Figures 2-6 As shown, a baffle plate 210 is provided at the rear end of the upper cover 200, and the baffle plate 210 is higher than the upper edge of the first smoke guide plate 300. The baffle plate 210 can prevent external water droplets from entering the smoke chamber 140, affecting the normal operation of the burner 110 or the taste of the food. When the pellet oven is used outdoors, it can also provide rain protection.

[0051] In one embodiment, such as Figures 1-5 As shown, first reinforcing portions 220 are formed on both side walls of the upper cover 200. The first reinforcing portions 220 are recessed from the side walls of the upper cover 200 into the interior of the furnace body 100. The recessed first reinforcing portions 220 can disperse the thermal stress of the side walls at high temperatures by changing the stress pattern of the material, reducing deformation or cracking caused by frequent heating and cooling. At the same time, they can also play a guiding role, promote flue gas circulation, and further optimize the heat distribution inside the furnace.

[0052] In one embodiment, such as Figure 1 , 3 As shown in Figure 5, the transition surface between the first reinforcing part 220 and the side wall of the upper cover 200 is an inclined surface. Setting this transition surface as an inclined surface can avoid stress concentration caused by right angle or acute angle connection, thereby reducing the deformation of the upper cover 200 during use.

[0053] In one embodiment, a second reinforcing portion 410 is formed on both the second smoke guide plate 400 and the third smoke guide plate 500, and each of the second reinforcing portions 410 is recessed into the inner side of the furnace body 100 from the second smoke guide plate 400 and the third smoke guide plate 500, respectively.

[0054] In one exemplary embodiment, a smoke exhaust system for a pellet smoke extraction oven is provided, comprising an upper cover assembly, a left splash guard assembly, a middle splash guard assembly, and a right splash guard assembly. A schematic diagram of the new smoke exhaust system for the pellet smoke extraction oven is shown below. Figure 3 The top cover, oven body, and three splash guards form a closed cavity. A flue for exhaust is designed between the top cover and the middle splash guard. The front of the top cover is designed with a backward-sloping arc structure, using the air duct to guide the airflow from the front to the end. Meanwhile, the airflow from the rear of the oven body rises with the airflow, forming an inward vortex as it passes the large curvature of the rear middle splash guard. The two airflows converge above the grill rack, causing the airflow to stagnate around the food. Driven by a continuous flow of airflow, a vortex gradually forms and converges at point R at the rear of the top cover. Once the rated pressure is reached, the airflow is discharged through the gap between the top cover and the middle splash guard, forming a cycle. The optimal gap width for the new flue area is 13.6mm, and the height difference between the top cover and the middle splash guard is 6.1mm. Figure 4The top cover and the perimeter of the oven body are sealed by a structure, and the pivot support design is located on both sides of the left and right splash guards, making it easy for users to open the top cover during use. The smoked pellet oven and its exhaust system provided in the above embodiment can reduce the product's footprint and save costs. Compared with a barrel-shaped oven body and exhaust through a chimney structure, the structure is more flexible and conducive to product upgrades and iterations. The grilling area inside a traditional pellet oven is in a semi-enclosed state, which is not conducive to users taking out food. The newly designed exhaust system, combined with the splash guard assembly, makes the grilling area open, making it convenient for users to take out food and improving the user experience. An exhaust gap is formed between the oven top cover and the oven body. This exhaust gap is located above the grilling cavity and at a relatively high position from the grilling rack. The rear splash guard of the oven top cover is bent to guide the airflow, and the front end of the top cover is also bent to guide the airflow, forming a smoke circulation channel, which helps to make the smoke distribution more even. The two-layer grilling rack supports on the left and right splash guards can block the smoke coming out from the sides, forcing the smoke to move towards the center to participate in the circulation, thereby further improving the uniformity of smoke distribution inside the oven and thus improving the grilling effect.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pellet furnace, characterized in that, include: The furnace body (100) is provided with a burner (110), a first grill (120) and a baffle plate (130) inside. The baffle plate (130) is located between the burner (110) and the first grill (120), and there is a smoke outlet gap between the baffle plate (130) and the side wall of the furnace body (100). The first smoke guide plate (300) is disposed on the rear side of the furnace body (100) and extends upward; The upper cover (200) is rotatably disposed relative to the furnace body (100), and the upper cover (200) is used to cover the furnace body (100) and unfold relative to the furnace body (100); When the upper cover (200) is placed on the furnace body (100), the upper cover (200), the first smoke guide plate (300) and the furnace body (100) enclose a smoke chamber (140). The rear end of the upper cover (200) and the upper edge of the first smoke guide plate (300) are horizontally offset and a smoke exhaust gap (141) is formed between them, which communicates with the smoke chamber (140). The upper edge of the first smoke guide plate (300) is located between the smoke exhaust gap (141) and the smoke chamber (140).

2. The pellet furnace according to claim 1, characterized in that, When the upper cover (200) is placed on the furnace body (100), in the vertical direction, the upper edge of the first smoke guide plate (300) is lower than the rear edge of the upper cover (200), the height difference h between the upper edge of the first smoke guide plate (300) and the rear edge of the upper cover (200) is ≤10mm, or the upper edge of the first smoke guide plate (300) is flush with the rear edge of the upper cover (200).

3. The pellet furnace according to claim 1, characterized in that, When the upper cover (200) is placed on the furnace body (100), the horizontal spacing d of the exhaust gap (141) is ≤15mm in the horizontal direction.

4. The pellet furnace according to claim 1, characterized in that, The first smoke guide plate (300) has a smoke guide curved surface that protrudes toward the rear side of the furnace body (100), and the front end of the upper cover (200) is an arc-shaped structure that protrudes toward the outside of the furnace body (100) and tilts toward the rear side of the furnace body (100).

5. The pellet furnace according to claim 1, characterized in that, The first smoke guide plate (300) has an upwardly extending second smoke guide plate (400) and a third smoke guide plate (500) on both sides, and the second smoke guide plate (400) and the third smoke guide plate (500) are hinged to the upper cover (200).

6. The pellet furnace according to claim 5, characterized in that, The pellet oven also includes a second grill (600), and a support member (700) is provided on the side of the second smoke guide plate (400) and the third smoke guide plate (500) facing the interior of the oven body (100). The support member (700) extends horizontally into the interior of the oven body (100) from the second smoke guide plate (400) and the third smoke guide plate (500), and the support member (700) is used to support the second grill (600).

7. The pellet furnace according to claim 1, characterized in that, A baffle plate (210) is provided at the rear end of the upper cover (200), and the baffle plate (210) is higher than the upper edge of the first smoke guide plate (300).

8. The pellet furnace according to claim 1, characterized in that, A first reinforcing part (220) is formed on both sides of the top cover (200), and the first reinforcing part (220) is recessed into the furnace body (100) from the side wall of the top cover (200).

9. The pellet furnace according to claim 8, characterized in that, The transition surface between the first reinforcing part (220) and the side wall of the upper cover (200) is an inclined surface.

10. The pellet furnace according to claim 6, characterized in that, A second reinforcing part (410) is formed on both the second smoke guide plate (400) and the third smoke guide plate (500), and each of the second reinforcing parts (410) is recessed into the inside of the furnace body (100) from the second smoke guide plate (400) and the third smoke guide plate (500).

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