Rocket heating oven with controllable feed

Abstract

Rocket heating furnace with controllable feed, characterized in that the rocket heating furnace comprises: - a base; - a furnace body attached to the base, the furnace body comprising a feed pipe and a combustion tube connected internally, the combustion chamber being formed inside the combustion tube for burning wood pellets, the feed pipe being designed to drop the wood pellets into the combustion chamber as feed; - an opening-closing assembly that is adjustable in the feed tube, wherein by pulling and then rotating the opening-closing assembly the interior of the feed tube can be opened so that the wood pellets automatically fall into the combustion chamber, wherein by resetting the opening-closing assembly it closes the interior of the feed tube to prevent the wood pellets from entering the combustion chamber; - an outer tube that is inserted vertically into the upper part of the combustion tube.

Description

Technical field

[0001] The present utility model relates to the technical field of the heating furnace, in particular a rocket heating furnace with controllable feed. State of the art

[0002] In the current field of heating stoves, the rocket stove is increasingly becoming the common choice for household and outdoor applications due to its use of environmentally friendly fuels such as wood pellets.

[0003] Regarding feed control, the feed pipes of existing rocket stoves typically have a through-flow design and lack an effective open / close control mechanism. After wood pellets are added through the feed pipe, they fall directly and continuously into the combustion chamber, and the feed rate cannot be controlled according to the actual heating demand. If a lower heating temperature is required, excess wood pellets produce large quantities of dense smoke due to incomplete combustion, resulting in fuel waste. If the feed needs to be temporarily stopped, this can only be achieved through makeshift measures such as sealing the feed pipe opening. This is cumbersome to operate and provides an inadequate seal, easily leading to flameback or the escape of high-temperature gases, posing a safety hazard. Content of the present utility model

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present utility model is to provide a rocket heating furnace with controllable feed, comprising: - a base; - a furnace body attached to the base, the furnace body comprising a feed pipe and a combustion tube connected internally, the combustion chamber being formed inside the combustion tube for burning wood pellets, the feed pipe being designed to drop the wood pellets into the combustion chamber as feed; - an opening-closing assembly that is adjustable in the feed tube, wherein by pulling and then rotating the opening-closing assembly the interior of the feed tube can be opened so that the wood pellets automatically fall into the combustion chamber, wherein by resetting the opening-closing assembly it closes the interior of the feed tube to prevent the wood pellets from entering the combustion chamber; - an outer tube that is inserted vertically into the upper part of the combustion tube.

[0005] In the present utility model, a further embodiment consists in the fact that the feed tube comprises a first tube body and a second tube body connected to each other, wherein the second tube body is connected to the combustion tube, wherein the first tube body and the combustion tube are each arranged vertically, the second tube body is arranged at an angle, and the first tube body has a cover on its upper part.

[0006] In the present utility model, a further embodiment consists in the fact that the furnace body further comprises an ash storage tube, wherein the ash storage tube is designed as a bent tube, and the upper end of the ash storage tube is connected to the lower end of the combustion tube, wherein the lower end of the ash storage tube is attached to the base.

[0007] In the present utility model, a further embodiment consists in the fact that a filter screen is attached in the upper inner area of ​​the ash storage tube.

[0008] In the present utility model, a further embodiment consists in a positioning groove being provided on the second tube body, wherein the opening-closing assembly comprises a handle, a cover, and a torsion spring, the torsion spring being mounted on one end of the handle, and the cover being arranged on the handle, with one end of the torsion spring being inserted into the second tube body and the other end elastically bearing against an end face of the cover, the cover corresponding to the inner region of the second tube body, and the positioning groove comprising a round hole region and a square hole region, wherein the handle comprising a cylindrical region and a cuboid region, the round hole region corresponding to the cylindrical region, and the cuboid region corresponding to the square hole region.by pulling the handle outwards, the cuboid section is released from the square hole area, whereupon the handle is rotated so that a material passage opening is created between the baffle and the second tube body, through which the wood pellets filled from the feed tube fall and enter the combustion tube; when the handle is returned to its starting position and the cuboid section engages with the square hole area, the baffle closes the interior of the second tube body.

[0009] In the present utility model, a further embodiment consists in the rocket heater further comprising a first positioning ring adapted to the outer tube and a second positioning ring adapted to the outer tube, wherein the first positioning ring is attached to the upper part of the combustion tube, the second positioning ring is fixed on one side by means of screw bolts to the side surface of the first tube body, the first positioning ring and the second positioning ring are arranged coaxially to each other, wherein the outer tube is passed through the first positioning ring and the second positioning ring and the lower end of the outer tube is supported at the upper end of the combustion tube, wherein the interior of the outer tube is in contact with the combustion tube.

[0010] In the present utility model, a further embodiment consists in the outer tube being designed as a transparent glass tube.

[0011] Compared to the prior art, the present utility model has the following advantageous effects: The furnace body comprises a combustion tube, a feed tube, and an ash storage tube, all designed as a single, interconnected unit. An opening / closing assembly is located within the combustion tube. Wood pellets are fed in via the feed tube, and the interior of the feed tube can be opened or closed by adjusting the opening / closing assembly. When open, the wood pellets automatically fall into the combustion chamber and participate in the combustion process, while when closed, they are prevented from entering the combustion tube. The opening / closing assembly can be opened or closed according to the specific requirements of the operation.After the wood pellets are ignited and open flames appear, the outer tube is attached to the top of the combustion tube, so that the heat generated by the combustion of the wood pellets provides heating and the flame can be viewed at the same time.

[0012] The present utility model will be explained in more detail below with reference to the drawings and specific embodiments. Brief description of the characters Fig. Figure 1 is a schematic representation of the structure of the present utility model; Fig. Figure 2 is an exploded view of the present utility model; Fig. Figure 3 is an enlarged representation of area A from Fig. 2. Detailed descriptions

[0013] The technical solutions in the embodiments of the present utility model are described below clearly and completely with reference to the drawings of the embodiments of the present utility model, whereby the described embodiments obviously represent only a part of the embodiments of the present utility model and not all embodiments.

[0014] Examples of the described embodiments are shown in the drawings, where identical or similar reference numerals throughout denote identical or similar elements or elements with the same or similar function. The embodiments described below with reference to the drawings are exemplary and serve to illustrate the present utility model and must not be understood as limiting the present utility model.

[0015] In the description of this utility model, it is to be understood that the orientation or position relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "upper", "lower", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or position relationships shown in the drawings and serve only to simplify the description of this utility model, without indicating or suggesting that the designated device or element must have a specific orientation or must be designed and operated in a specific orientation, and therefore must not be understood as a limitation of this utility model.

[0016] In this utility model, the terms "assembly," "connection," "connection," "fastening," and similar terms are to be understood in a broad sense unless expressly stated and defined otherwise; for example, they may refer to a permanent connection, a detachable connection, or an integral design; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection via an intermediate medium; they may refer to an internal connection between two elements or to an interaction between two elements. For a person skilled in the art, the specific meaning of the aforementioned terms in this utility model is understandable depending on the specific situation.

[0017] The present embodiment provides a rocket heating furnace with controllable feed, comprising: - a base 1, wherein the base 1 is made of high-strength metal material (such as cold-rolled sheet steel), has an overall disc-shaped structure and fulfills the supporting function for the overall device; - a furnace body 2, wherein the furnace body 2 is connected to the base 1; wherein the furnace body 2 comprises an internally connected feed tube 20 and a combustion tube 21, wherein a combustion chamber for burning wood pellets is formed inside the combustion tube 21; wherein the feed tube 20 serves to supply wood pellets into the combustion chamber, the inner wall of the feed tube 20 is smoothly polished to reduce resistance when wood pellets fall and to prevent clogging of wood pellets in the feed tube 20; - an opening-closing assembly 3, wherein the opening-closing assembly 3 is adjustably arranged in the feed tube 20, is made of high-temperature resistant alloy material and exhibits good mechanical strength and high-temperature resistance. By pulling and then rotating the opening-closing assembly 3, the interior of the feed tube 20 is opened so that wood pellets automatically fall into the combustion chamber, whereby a rotation can be made to adjust the degree of opening of the feed tube 20. By resetting the opening-closing assembly 3 (i.e.,(First, by rotating in the opposite direction and then pushing back into the starting position) the interior of the feed tube 20 is closed by the opening-closing assembly 3, whereby after resetting the opening-closing assembly 3 rests tightly against the inner wall of the feed tube 20 to prevent the wood pellets from entering the combustion chamber and at the same time to prevent flames and high-temperature gases from escaping from the combustion chamber through the feed tube 20; - an outer tube 4, wherein the outer tube 4 is made of high-strength transparent quartz glass, has good light transmission and high temperature resistance, withstands higher temperatures and has high light transmission to allow observation of the flame in the combustion chamber; the outer tube 4 is inserted vertically into the upper part of the combustion tube 21.

[0018] In this embodiment, the feed pipe 20 further comprises a first pipe body 200 and a second pipe body 201 connected to each other. The second pipe body 201 is connected to the combustion tube 21. The first pipe body 200 and the combustion tube 21 are each arranged vertically to ensure sufficient space for the combustion of wood pellets. The second pipe body 201 is arranged at an angle, this angular arrangement allowing wood pellets to fall under the influence of gravity from the first pipe body 200, through the second pipe body 201, into the combustion chamber, while simultaneously preventing flames from the combustion chamber from flashing back into the first pipe body 200.The first pipe body 200 is provided at the top with a lid 202, wherein the lid 202 is made of metal material, wherein the top of the lid 202 is provided with a round handle 30, wherein the handle 30 is attached to the lid 202 by welding to facilitate opening and closing the lid 202, and wherein when closing the lid 202, dust and foreign bodies are prevented from entering the feed pipe 20.

[0019] In the present embodiment, the furnace body 2 further comprises an ash storage tube 22. The ash storage tube 22 is designed as a curved tube, the upper end of which is connected to the lower end of the combustion tube 21. The lower end is attached to the base 1, and the end of the ash storage tube 22 is provided with a removable cover, which allows for periodic opening to clean the ash in the ash storage tube 22. The ash storage tube 22 can hold a certain amount of ash, thereby reducing the frequency of cleaning.

[0020] In the present embodiment, a filter screen 220 is fixed in the upper inner area of ​​the ash storage tube 22, wherein the filter screen 220 is made of high-temperature resistant stainless steel and can effectively filter larger impurities, such as incompletely burned pieces of wood that arise during the combustion of wood pellets, in order to prevent clogging of the ash storage tube 22 and at the same time to facilitate the subsequent reuse of the incompletely burned pieces of wood.

[0021] In the present embodiment, a positioning groove 203 is further provided on the second tube body 201. The opening-closing assembly 3 comprises a handle 30, a cover 31, and a torsion spring 32, wherein the torsion spring 32 is made of high-temperature-resistant spring steel and retains good elastic properties under high-temperature conditions. The torsion spring 32 is attached to one end of the handle 30. The cover 31 is arranged on the handle 30, wherein the cover 31 is made of high-temperature-resistant alloy material and its shape corresponds to the cross-sectional shape of the second tube body 201. The torsion spring 32 is inserted at one end into a socket provided on the second tube body 201, with the other end bearing elastically against an end face of the cover 31. The cover 31 is adapted to the interior of the second tube body 201.The positioning groove 203 comprises a round hole area and a square hole area, wherein the round hole area and the square hole area are interconnected. The diameter of the round hole area is adapted to the diameter of the cylindrical area of ​​the handle 30, and the edge length of the square hole area is adapted to the edge length of the cuboid area of ​​the handle 30. The handle 30 comprises a cylindrical area and a cuboid area, wherein the cylindrical area and the cuboid area are formed in one piece.When feeding is required, the handle 30 is pulled outwards so that the cuboid section separates from the square-hole section. The handle 30 is then rotated to create a material passage opening between the baffle 31 and the second tube body 201. The size of this opening changes with the angle of rotation, and the wood pellets fed from the feed tube fall through this opening into the combustion tube 21. When the handle 30 is reset, it is first rotated in the opposite direction to its initial position. Then, the handle 30 is pushed so that the cuboid section engages with the square-hole section. At this point, the baffle 31 closes the inside of the second tube body 201, and its edge rests tightly against the inner wall of the second tube body 201 to prevent the ingress of wood pellets and the escape of flames.

[0022] In this embodiment, further comprising a first positioning ring 40 and a second positioning ring 41 corresponding to the outer tube 4, wherein the first positioning ring 40 and the second positioning ring 41 are each made of metallic material, the inner diameter of which corresponds to the outer diameter of the outer tube 4, thereby ensuring that the outer tube 4 can be guided through smoothly and supported stably; wherein the first positioning ring 40 is arranged to snap into the top of the burner tube 21; wherein the second positioning ring 41 is tightened and fixed on one side by means of a screw 42 to the side surface of the first tube body 200; wherein the first positioning ring 40 and the second positioning ring 41 correspond coaxially to each other, thereby ensuring that the outer tube 4 can be guided through vertically.The outer tube 4 penetrates the first positioning ring 40 and the second positioning ring 41, causing the lower end of the outer tube 4 to be supported on the upper end of the combustion tube 21. The interior of the outer tube 4 is in contact with the combustion tube 21, ensuring that the high-temperature gases generated during combustion can flow properly within the furnace body 2 to achieve heat transfer.

[0023] In the present embodiment, the outer tube 4 is further designed as a transparent glass tube, this material exhibiting excellent high-temperature resistance and impact resistance to prevent the outer tube 4 from breaking due to temperature changes or minor impacts. The transparent glass tube has a suitable wall thickness that ensures its structural strength while simultaneously not impairing light transmission, so that the user can clearly observe the flame shape of the wood pellet combustion in the combustion chamber, thereby enhancing the user experience.The outer surface of the transparent glass tube is coated with an anti-fingerprint coating, the coating being made of nano-silicon dioxide material and effectively preventing fingerprints from being left on the user's hand, thus keeping the surface of the outer tube 4 clean and facilitating flame observation.

[0024] The furnace body 2 comprises a combustion tube 21, a charging tube 20, and an ash storage tube 22, which are formed as three interconnected, one-piece molded parts. The one-piece molded structure eliminates gaps between the individual components, reduces heat loss, and simultaneously increases the overall structural strength of the furnace body 2, thereby extending the service life of the heating furnace. The combustion tube 21 is equipped with an opening-closing assembly 3, which is made of high-temperature-resistant material and has a suitable structural design that enables stable control.The wood pellets are added via the feed tube 20, the structural design of which (first tube section 200 vertical, second tube section 201 inclined) ensures that the wood pellets can fall through easily, and the arrangement of the lid 202 prevents the ingress of foreign objects. The opening-closing assembly 3 allows the interior of the feed tube 20 to be opened or closed by adjustment.In the open position, the wood pellets can automatically fall into the combustion chamber under the influence of gravity and participate in the combustion process. In the closed position, the wood pellets are blocked and cannot fall into the combustion tube 21. Depending on the usage requirements (such as the required heating temperature and the combustion rate of the wood pellets), the opening or closing of the opening / closing assembly 3 can be flexibly controlled, thus achieving precise control of the feed rate and preventing waste of wood pellets or incomplete combustion due to overfeeding. After the wood pellets have ignited and an open flame has appeared, the outer tube 4 is attached to the top of the combustion tube 21.The outer tube 4 not only prevents the rapid spread of high-temperature combustion gases and increases heat efficiency, but also allows the user to observe the flames through its transparent glass material, making operation more interesting and engaging. The ash storage tube 22 is designed to collect ash after combustion. The filter screen 220 filters out impurities and facilitates ash removal as well as the recovery of incompletely burned wood pieces. The overall structure is simple and rationally designed, user-friendly, and has comparatively low manufacturing costs, making it suitable for various applications such as household and outdoor use., whereby the heating function is realized using heat generated by the combustion of wood pellets, with good heating effect, and at the same time offers a viewing function to meet the diverse requirements of the users.

[0025] The embodiments described above represent only preferred embodiments of the present utility model and do not serve to limit the scope of protection of the present utility model. Any non-essential modifications and replacements made by persons skilled in the art based on the present utility model fall within the scope of protection of the present utility model.

Claims

[1] Rocket heating furnace with controllable feed, characterized by , that the rocket heater includes: - a base; - a furnace body attached to the base, the furnace body comprising a feed pipe and a combustion tube connected internally, the combustion chamber being formed inside the combustion tube for burning wood pellets, the feed pipe being designed to drop the wood pellets into the combustion chamber as feed; - an opening-closing assembly that is adjustable in the feed tube, wherein by pulling and then rotating the opening-closing assembly the interior of the feed tube can be opened so that the wood pellets automatically fall into the combustion chamber, wherein by resetting the opening-closing assembly it closes the interior of the feed tube to prevent the wood pellets from entering the combustion chamber; - an outer tube that is inserted vertically into the upper part of the combustion tube. [2] Rocket heating furnace with controllable feed according to claim 1, characterized by , that the feed tube comprises a first tube body and a second tube body connected to each other, the second tube body being connected to the combustion tube, the first tube body and the combustion tube being arranged vertically, the second tube body being arranged at an angle, and the first tube body having a lid on its upper part. [3] Rocket heating furnace with controllable feed according to claim 2, characterized by , that the furnace body further comprises an ash storage tube, wherein the ash storage tube is designed as a curved tube, and the upper end of the ash storage tube is connected to the lower end of the combustion tube, wherein the lower end of the ash storage tube is attached to the base. [4] Rocket heating furnace with controllable feed according to claim 3, characterized by that a filter screen is attached in the upper inner area of ​​the ash storage tube. [5] Rocket heating furnace with controllable feed according to claim 2, characterized bythat a positioning groove is provided on the second tube body, wherein the opening-closing assembly comprises a handle, a cover, and a torsion spring, the torsion spring being mounted on one end of the handle, and the cover being arranged on the handle, one end of the torsion spring being inserted into the second tube body and the other end being elastically abutting an end face of the cover, the cover corresponding to the inner region of the second tube body, and the positioning groove comprising a round hole region and a square hole region, the handle comprising a cylindrical region and a cuboid region, the round hole region corresponding to the cylindrical region, and the cuboid region corresponding to the square hole region, wherein by pulling the handle outwards the cuboid region is released from the square hole region, whereupon the handle is rotated,so that a material passage opening is created between the baffle and the second tube body, through which the wood pellets filled from the feed tube fall and enter the combustion tube; when the handle is returned to its starting position and the cuboid area engages with the square hole area, the baffle closes the interior of the second tube body. [6] Rocket heating furnace with controllable feed according to claim 5, characterized by, that the rocket heater further comprises a first positioning ring adapted to the outer tube and a second positioning ring adapted to the outer tube, wherein the first positioning ring is attached to the upper part of the combustion tube, the second positioning ring is fixed on one side by means of screw bolts to the side surface of the first tube body, the first positioning ring and the second positioning ring are arranged coaxially to each other, wherein the outer tube is passed through the first positioning ring and the second positioning ring and the lower end of the outer tube is supported at the upper end of the combustion tube, wherein the interior of the outer tube is in contact with the combustion tube. [7] Rocket heating furnace with controllable feed according to claim 1, characterized by that the outer tube is designed as a transparent glass tube.

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