Biomass pellet burner

Abstract

This utility model belongs to the field of burner technology, specifically relating to a biomass pellet burner, including a combustion chamber and an upper shell. The lower port of the upper shell is fixedly installed at the upper port of the combustion chamber, and the upper port of the upper shell serves as a feeding port. A screen plate is installed on the lower side of the combustion chamber. Vertical plates are movably mounted on at least one side of the outer side of the upper shell, and these vertical plates can be lowered and fixed within the combustion chamber. The combustion space enclosed between the vertical plates is smaller than the total volume of the combustion chamber, or the volume of the combustion space enclosed by the vertical plates and the inner wall of the combustion chamber is smaller than the total volume of the combustion chamber. The vertical plates, movably mounted on at least one side of the outer side of the upper shell, can be lowered and fixed within the combustion chamber. The newly enclosed combustion space is smaller than the total volume of the combustion chamber. A smaller combustion space results in a slower combustion rate for the pellet fuel, allowing for a longer combustion time. This allows for selection of a suitable combustion space based on actual flame requirements, making the burner more flexible in use.

Description

Technical Field

[0001] This utility model belongs to the field of burner technology, specifically relating to a biomass pellet burner. Background Technology

[0002] As people's living standards improve, more people choose to experience the beauty of nature through outdoor camping. A wood-burning stove is an important tool for outdoor camping, used for heating or cooking. Traditional wood-burning stoves burn dry branches and charcoal, but these methods cannot provide long-lasting heating. Therefore, burners that burn biomass pellet fuel have been developed, which can continuously provide biomass pellet fuel for starting a fire. Existing pellet burners burn biomass pellet fuel within the combustion chamber. The heat output and burning speed of the biomass pellet fuel cannot be changed, making them inflexible in use. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a biomass pellet burner that can change the combustion speed of biomass pellet fuel.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a biomass pellet burner, comprising a combustion chamber and an upper shell, the lower port of the upper shell being fixedly installed at the upper port of the combustion chamber, the upper port of the upper shell being a feeding port, a screen plate being installed on the lower side of the combustion chamber, and a vertical plate being vertically and retractably arranged on the outer side of at least one side of the upper shell, the vertical plate being lowered and fixed in the combustion chamber; the combustion space enclosed between the vertical plates is smaller than the total volume of the combustion chamber, or the volume of the combustion space enclosed by the vertical plates and the inner wall of the combustion chamber is smaller than the total volume of the combustion chamber.

[0005] Preferably, the combustion chamber consists of two side plates and two inclined side flaps. The two side plates are vertical and opposite to each other, and the two side flaps are opposite to each other. Two vertical plates are installed on the outer side of the upper shell corresponding to the two side flaps in a liftable manner.

[0006] Preferably, a fixing plate is fixedly provided on the side of the upper housing, and an elongated hole is vertically opened on the fixing plate. Fixing parts are provided on both sides of the vertical plate, and round holes are opened on the fixing parts. The fixing parts of the vertical plate are fixedly connected to the fixing plate by fixing nuts and bolts.

[0007] Preferably, the combustion chamber has a trapezoidal longitudinal section, with the two ends of the lower side of the side flap rotatably connected to two side plates, and a transparent observation window is installed on at least one side flap.

[0008] Preferably, a plurality of air inlets are provided on the two side plates, and combustion baffles are fixedly and spaced apart on the outer sides of the two side plates.

[0009] Preferably, a material distribution plate is provided in the middle of the corresponding feed port in the combustion chamber. The material distribution plate is composed of two horizontal plates connected together. The two horizontal plates are inclined and their upper sides are fixedly connected. The lower sides of the two horizontal plates are inclined in a direction away from each other.

[0010] Preferably, a screen plate mounting port is provided on one side of the lower port of the combustion chamber. One end of the screen plate is installed into the combustion chamber through the mounting port, and the other end of the screen plate is fixedly connected to the combustion chamber by connecting bolts.

[0011] Preferably, the screen plate is connected to a scraper, the scraper is provided with scraping teeth, and the screen part of the screen plate is composed of several screen rods arranged side by side at intervals, and the scraping teeth can move along the gap between adjacent screen rods.

[0012] Preferably, the scraping component includes a handle and a scraper plate. The handle is connected to the scraper plate, and a plurality of scraping holes are provided on the scraper plate in parallel at intervals. Each screen rod passes through each scraping hole, and the scraper plate between each scraping hole serves as scraping teeth.

[0013] Preferably, two stop plates are provided inside the upper housing, the two stop plates are arranged opposite to each other, one end of the stop plate is rotatably connected to the upper housing, and a counterweight plate is fixedly provided at one end of the stop plate. The counterweight plate is located outside the upper housing and keeps the stop plate horizontal.

[0014] Compared with existing technologies, the above technical solution has the following beneficial effects:

[0015] 1. The pellet burner burns pellet fuel in the combustion chamber. This utility model has vertically adjustable plates on at least one side of the outer side of the upper shell. Each vertical plate can be lowered and fixed in the combustion chamber. Each vertical plate can form a new combustion space between itself or between itself and the inner wall of the combustion chamber. The volume of the combustion space formed by the vertical plates or between itself and the inner wall of the combustion chamber is smaller than the total volume of the combustion chamber. The smaller the volume of the combustion space, the slower the combustion speed of the pellet fuel, and the longer the combustion time of the pellet fuel. Therefore, the appropriate combustion space can be selected according to the actual flame requirements during use, making it more flexible.

[0016] 2. The two ends of the lower side of the side flap are rotatably connected to the two side plates respectively. Since the longitudinal section of the combustion chamber is trapezoidal, the side flap can be directly flipped up and fixed. The side flap can be flipped to operate the combustion chamber at any time. At least one side flap is equipped with a transparent observation window to observe the combustion situation in the combustion chamber at any time.

[0017] 3. An air inlet is provided on the side plate to ensure stable combustion of particulate fuel in the combustion chamber. At the same time, a combustion baffle is provided on the outside of the side plate to prevent sparks or ash from being sprayed directly out of the air inlet from the combustion chamber.

[0018] 4. The screen plate is detachably installed on the lower side of the combustion chamber. The appropriate screen plate can be selected according to the size of the particulate fuel. The screen plate is also connected to a scraper. The scraper moves to scrape the screen plate and prevent the ash and slag after combustion from clogging the screen plate.

[0019] 5. Two stop plates are installed inside the upper shell. Under the weight of the counterweight plate, the stop plates are kept horizontal inside the upper shell to prevent the flames or sparks in the combustion chamber from rising and causing the pellet fuel above the feed port to ignite. However, when the pellet fuel falls, it will press down the stop plates and fall smoothly into the combustion chamber. Before falling into the combustion chamber, the pellet fuel falls evenly and slowly under the action of the equalization plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure after removing the combustion baffle and the side flap glass.

[0022] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0023] Figure 4 This is a top view of the interior of this utility model.

[0024] Figure 5 for Figure 4 Sectional view at point AA.

[0025] Figure 6 This is a schematic diagram of the sieve plate structure.

[0026] Figure 7 This is a schematic diagram of the scraper component.

[0027] The components include: 1. Upper shell; 2. Feed port; 3. Combustion chamber; 4. Support plate; 5. Side flap; 6. Handle; 7. Side plate; 8. Combustion baffle; 9. Lower mounting plate; 10. Counterweight plate; 11. Vertical plate; 12. Fixing nut; 13. Fixing plate; 14. Side baffle; 15. Long strip hole; 16. Air inlet; 17. Material distribution plate; 18. Support port; 19. Scraper component; 1901. Handle rod; 1902. Scraper plate; 1903. Scraper hole; 20. Screen plate; 2001. Mounting side plate; 2002. Connecting part; 2003. Screen part; 2004. Through hole; 21. Connecting bolt; 22. Stop plate; 23. Connecting plate; 24. Fixing part. Detailed Implementation

[0028] Figures 1-7 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-7 The present invention will be further described below.

[0029] like Figure 1 As shown, this utility model discloses a biomass pellet burner, comprising a combustion chamber 3 and an upper shell 1. The lower port of the upper shell 1 is fixedly installed at the upper port of the combustion chamber 3, and the upper port of the upper shell 1 is a feeding port 2. A feeding device is installed at the feeding port 2 to automatically supply pellets to the burner. A screen plate 20 is installed on the lower side of the combustion chamber 3. The pellets fall onto the screen plate 20 and burn on the screen plate 20. The ash produced after combustion falls through the gaps in the screen plate 20. A vertical plate is provided on at least one side of the outer side of the upper shell 1, which can be raised and lowered. 11. The vertical plate 11 can be lowered and fixed inside the combustion chamber 3. After the vertical plate 11 is lowered into the combustion chamber 3, each vertical plate 11 can form a new combustion space, or form a new combustion space between the vertical plate 11 and the inner wall of the combustion chamber 3. The combustion space formed between the vertical plates 11 is smaller than the total volume of the combustion chamber 3, or the volume of the combustion space formed by the vertical plate 11 and the inner wall of the combustion chamber 3 is smaller than the total volume of the combustion chamber 3. The smaller the volume of the combustion space, the slower the combustion speed of the pellet fuel, and the longer the combustion time of the pellet fuel.

[0030] like Figure 2 As shown, the combustion chamber 3 consists of two side plates 7 and two inclined side flaps 5. The two side plates 7 are vertical and opposite to each other, and the two side flaps 5 are opposite to each other. In this embodiment, the longitudinal section of the combustion chamber 3 is trapezoidal, and the cross-sectional area of ​​the lower part of the combustion chamber 3 is larger than that of the upper part. The two ends of the lower side of the side flaps 5 are rotatably connected to the two side plates 7 respectively. Since the longitudinal section of the combustion chamber 3 is trapezoidal, the side flaps 5 can be fixed by simply flipping them up. A handle 6 is provided at the upper end of the side flaps 5. The side flaps 5 can be flipped open by the handle 6. After opening the side flaps 5, the granular material in the combustion chamber 3 can be ignited. In this embodiment, a transparent observation window is installed on at least one side flap 5. The combustion situation in the combustion chamber can be observed at any time through the observation window. At the same time, a connecting plate 23 is connected between the two side plates 7. The two connecting plates 23 are respectively located near the two side flaps 5. The presence of the two connecting plates 23 can make the burner more stable.

[0031] To provide sufficient air for the combustion of the pellets in the combustion chamber 3, several air inlets 16 are provided on the side plate 7. At the same time, a combustion baffle 8 is provided on the outside of the side plate 7 to prevent sparks or ash from being sprayed directly out of the air inlets 16 in the combustion chamber 3. A support plate 4 is fixedly provided on the lower side of the combustion chamber 3. The edge of the support plate 4 protrudes from the lower port of the combustion chamber 3. A lower mounting plate 9 is fixedly provided on the lower side of the support plate 4 corresponding to the lower port of the combustion chamber 3. When using this burner, the lower mounting plate 9 is installed into the furnace body, and the support plate 4 is locked on the upper side of the furnace body. A chimney is provided on one side of the burner. Therefore, when the pellets in the combustion chamber 3 are burning, the flame moves downward into the furnace body, and the flue gas is discharged from the chimney on one side.

[0032] like Figures 3-5 As shown, since the two side plates 7 of the combustion chamber 3 are vertically arranged, in this embodiment, two vertical plates 11 are installed on the outside of the upper shell 1 corresponding to the two side flaps 5 in a liftable manner. The two vertical plates 11 can be lowered into the combustion chamber 3. After being lowered into the combustion chamber 3, the two vertical plates 11 and the two side plates 7 can form a new combustion space. This combustion space is smaller than the combustion space of the overall combustion chamber 3. When it is necessary to slow down the combustion speed of the granular material, the vertical plates 11 can be lowered and fixed in the combustion chamber 3.

[0033] Specifically, a fixing plate 13 is fixedly installed on the side of the upper shell 1. The fixing plate 13 is installed on both sides of the upper shell 1 corresponding to the side flap 5. A long hole 15 is vertically opened on the fixing plate 13. Fixing parts 24 are provided on both sides of the vertical plate 11. A round hole is opened on the fixing part 24. The fixing parts 24 on both sides of the vertical plate 11 are fixedly connected to the fixing plates 13 on both sides by fixing nuts 12 and bolts. The bolts pass through the round hole and the long hole 15 from the inside of the fixing part 24. The fixing nuts 12 are threaded to the bolts from the outside to fix the vertical plate 11. Since the vertical plate 11 serves as the inner wall of the combustion chamber 3 during use, ash and slag will be present on the vertical plate 11. After the vertical plate 11 is raised and moved out of the combustion chamber 3, the vertical plate 11 is fixed to the outside of the upper shell 1. In order to prevent the vertical plate 11 from being rubbed during use, side baffles 14 are provided at intervals on the outside of the two vertical plates 11. Fixing parts 24 are also provided at both ends of the side baffles 14. The fixing parts 24 of the side baffles 14 also have elongated holes corresponding to the elongated holes 15 of the fixing plate 13. The side baffles 14 are installed so that the elongated holes of the side baffles 14 are aligned with the elongated holes 15 of the fixing plate 13. Then, the side baffles 14 are fixedly connected to the fixing plate 13 by bolts and nuts. In this embodiment, the side baffles 14 are also hollowed out for aesthetic purposes.

[0034] Two stop plates 22 are provided inside the upper housing 1. The two stop plates 22 are arranged opposite to each other. One end of the stop plate 22 is rotatably connected to the upper housing 1. At the same time, a counterweight plate 10 is fixedly provided at one end of the stop plate. The counterweight plate 10 is located outside the upper housing 1. The stop plate 22 is kept horizontal under the gravity of the counterweight plate 10 to prevent the flames or sparks in the combustion chamber 3 from floating upwards and causing the pellet fuel above the feed port 2 to ignite. However, when the pellet fuel falls, the pellet fuel will press down on the stop plate 22, causing the two stop plates 22 to flip downwards and open, and the pellet fuel will fall smoothly into the combustion chamber 3. A uniform feed plate 17 is provided in the middle of the feed port 2 in the combustion chamber 3. The uniform feed plate 17 is composed of two horizontal plates connected together. The two horizontal plates are inclined and their upper sides are fixedly connected. The lower sides of the two horizontal plates are inclined in a direction away from each other. The uniform feed plate 17 is inverted "V" shape. Support ports 18 are provided on the two side plates 7. The length of the uniform feed plate 17 is greater than the distance between the two side plates 7. The two ends of the uniform feed plate 17 are respectively installed in the two support ports 18 on both sides and fixed. Before the particulate fuel falls into the combustion chamber 3, it falls evenly and slowly onto the screen plate 20 under the action of the uniform feed plate 22.

[0035] A screen plate 20 mounting port is provided on the lower side of the side flap 5 on one side. One end of the screen plate 20 is installed into the combustion chamber 3 through the mounting port, and a corresponding mounting part is provided on the lower mounting plate 9. One end of the screen plate 20 can be placed on the mounting part of the lower mounting plate 9 for fixation, and the other end of the screen plate 20 is fixedly connected to the combustion chamber 3. A suitable screen plate 20 can be selected according to the size of the particulate fuel. The screen plate 20 is connected to a scraper 19, which is provided with scraper teeth. The screen part 2003 of the screen plate 20 is composed of several screen rods arranged side by side at intervals. The scraper teeth can move along the gap between adjacent screen rods to scrape the screen part 2003 and prevent ash and slag from clogging the screen part 2003, which would prevent the flame from entering the furnace body below.

[0036] Specifically, such as Figures 6-7As shown, the screen plate 20 includes a mounting side plate 2001 and a screen part 2003. The screen part 2003 is mounted on one side of the mounting side plate 2001. Connecting parts 2002 are provided at both ends of the mounting side plate 2001. After the screen plate 20 is installed into the combustion chamber 3, the connecting parts 2002 are connected to the side plate 7 of the combustion chamber 3 and fixed using connecting bolts 21. The screen plate 20 is easy to disassemble. The scraper component 19 includes a handle 1901 and a scraper plate 1902. The handle 1901 is connected to the scraper plate 1902. A through hole 2004 is provided on the 2001, and the handle 1901 passes through the through hole 2004. In this embodiment, a number of scraping holes 1903 are provided side by side at intervals on the scraper plate 1902. Each screen rod of the screen part 2003 is respectively provided through each scraping hole 1903. The scraper plate 1902 between each scraping hole 1903 serves as scraping teeth. Pulling the handle 1901 outside the combustion chamber 3 can cause the scraper plate 1902 to scrape the screen part 2003. Screen plates 20 with different gaps are connected to different scraping components 19. In other embodiments, a number of scraping teeth may be provided on the lower side of the scraper plate 1902. The scraping teeth are in the shape of an inverted triangle or an inverted trapezoid. When the handle 1901 is moved, the scraping teeth scrape the screen part 2003. However, when using the scraping teeth, it is necessary to first align the scraping teeth with the gap of the screen part 2003. Moreover, the scraping teeth are not stable and accurate enough when in use, and the scraping efficiency is low.

[0037] In use, the burner is installed on the furnace body, and the upper end of the upper shell 1 is connected to the feeding device. The feeding device provides pellet combustion to the combustion chamber 3 through the feeding port 2. The side flap 5 is flipped to ignite the pellet fuel. The pellet fuel burns on the screen plate 20, and the flame passes through the screen plate 20 into the furnace body below. When it is necessary to slow down the burning speed of the pellets, the vertical plates 11 on both sides are lowered into the combustion chamber 3 and fixed. The two vertical plates 11 and the two side plates 7 form a new combustion space. The volume of the new combustion space is smaller than the volume of the combustion chamber 3, so the burning speed is naturally slowed down, and the pellet fuel can burn for a longer time. Therefore, the appropriate combustion space can be selected according to the actual requirements of the flame during use, making it more flexible. In addition, by using the handle 1901 to move the scraper 1902 along the screen part 2003, the ash and slag in the gap of the screen part 2003 can be scraped to prevent the ash and slag from clogging the screen part 2003 and ensure that the flame can pass smoothly through the screen part 2003 into the furnace body below.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A biomass pellet burner, characterized in that: It includes a combustion chamber (3) and an upper shell (1). The lower port of the upper shell (1) is fixedly installed on the upper port of the combustion chamber (3). The upper port of the upper shell (1) is a feeding port (2). A screen plate (20) is installed on the lower side of the combustion chamber (3). A vertical plate (11) is provided on the outer side of at least one side of the upper shell (1) and can be raised and lowered. The vertical plate (11) can be lowered and fixed inside the combustion chamber (3). The combustion space enclosed between the vertical plates (11) is smaller than the total volume of the combustion chamber (3), or the volume of the combustion space enclosed by the vertical plates (11) and the inner wall of the combustion chamber (3) is smaller than the total volume of the combustion chamber (3).

2. The biomass pellet burner according to claim 1, characterized in that: The combustion chamber (3) consists of two side plates (7) and two inclined side flaps (5). The two side plates (7) are vertical and opposite to each other, and the two side flaps (5) are opposite to each other. Two vertical plates (11) are installed on the outside of the upper shell (1) corresponding to the two side flaps (5) in a liftable manner.

3. A biomass pellet burner according to claim 2, characterized in that: A fixing plate (13) is fixedly provided on the side of the upper housing (1). A long strip hole (15) is vertically opened on the fixing plate (13). Fixing parts (24) are provided on both sides of the vertical plate (11). A round hole is opened on the fixing part (24). The fixing part (24) of the vertical plate (11) is fixedly connected to the fixing plate (13) by fixing nuts (12) and bolts.

4. A biomass pellet burner according to claim 2, characterized in that: The combustion chamber (3) has a trapezoidal longitudinal section. The two ends of the side flap (5) are rotatably connected to two side plates (7) respectively. A transparent observation window is installed on at least one side flap (5).

5. A biomass pellet burner according to claim 2, characterized in that: Several air inlets (16) are provided on the two side plates (7), and combustion baffles (8) are fixedly and spaced apart on the outer side of the two side plates (7).

6. A biomass pellet burner according to claim 1, characterized in that: A uniform material plate (17) is provided in the middle of the feed port (2) in the combustion chamber (3). The uniform material plate (17) is composed of two horizontal plates connected together. The two horizontal plates are inclined and the upper sides of the two horizontal plates are fixedly connected. The lower sides of the two horizontal plates are inclined in a direction away from each other.

7. A biomass pellet burner according to claim 1, characterized in that: A screen plate (20) mounting port is provided on one side of the lower port of the combustion chamber (3). One end of the screen plate (20) is installed into the combustion chamber (3) from the mounting port, and the other end of the screen plate (20) is fixedly connected to the combustion chamber (3) by connecting bolts (21).

8. A biomass pellet burner according to claim 1 or 7, characterized in that: The screen plate (20) is connected to a scraper (19), and the scraper (19) is provided with scraper teeth. The screen part (2003) of the screen plate (20) is composed of several screen rods arranged side by side at intervals. The scraper teeth can move along the gap between adjacent screen rods.

9. A biomass pellet burner according to claim 8, characterized in that: The scraper (19) includes a handle (1901) and a scraper (1902). The handle (1901) is connected to the scraper (1902). Several scraper holes (1903) are arranged side by side and spaced apart on the scraper (1902). Each screen rod passes through each scraper hole (1903) and the scraper (1902) between each scraper hole (1903) serves as scraper teeth.

10. A biomass pellet burner according to claim 1, characterized in that: Two stop plates (22) are provided inside the upper housing (1). The two stop plates (22) are arranged opposite to each other. One end of the stop plate (22) is rotatably connected to the upper housing (1). A counterweight plate (10) is also fixedly provided at one end of the stop plate. The counterweight plate (10) is located outside the upper housing (1) and keeps the stop plate (22) horizontal.

Images