Oxygen increasing inner cylinder and oxygen increasing device of granular fuel stove

Abstract

The utility model provides a granular fuel stove oxygenation inner cylinder and oxygenation device, the granular fuel stove oxygenation inner cylinder comprises an inner cylinder body, both ends of the inner cylinder body are fixed with annular sealing plates, the middle part of each sealing plate is communicated with the middle part of the inner cylinder body, and the outer diameter of each sealing plate is greater than that of the inner cylinder body; the inner barrel body comprises an oxygen supplementing section and a maintaining section, a plurality of oxygen increasing holes are formed in the side wall of the oxygen supplementing section, and the side wall of the maintaining section is of a closed structure. According to the utility model, the furnace core is placed in a way that the oxygen supplementing section faces downwards or the keeping section faces downwards, so that the oxygen supplementing time of gasified fuel is controlled, the temperature field distribution of the furnace core is changed as required, the fuel consumption is reduced, and the economical efficiency and the environmental protection property of the furnace are improved. The oxygenation device of the granular fuel stove comprises an oxygenation bin outer cylinder, the oxygenation inner cylinder of the granular fuel stove is arranged in the oxygenation bin outer cylinder, and the peripheral side of the sealing plate is in contact with the inner side wall of the oxygenation bin outer cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass pellet fuel stove cores, in particular to an oxygen-increasing inner cylinder and an oxygen-increasing device for a pellet fuel stove. Background Art

[0002] The oxygen enrichment device is located on the upper part of the furnace core of the biomass pellet fuel furnace and is used to add air to the gasified fuel to ensure full combustion of the fuel and improve thermal efficiency.

[0003] Currently, the most thermally efficient oxygen enrichment chamber structure features a circular, enclosed chamber located above the furnace core, with air distribution ports on the outer wall and multiple oxygen supply holes on the inner wall. Combustion within the furnace core creates an upward airflow, which creates a chimney effect, drawing air from the enclosed chamber into the furnace core, where it is evenly added to the high-temperature flue gas above the core for oxygenated combustion. Simultaneously, negative pressure is generated within the enclosed chamber, forcing air from outside the furnace core to enter the enclosed chamber through the air distribution ports for preheating.

[0004] However, heating needs vary significantly across seasons and weather conditions. For example, when the climate is cold, heating demand increases, requiring a higher furnace temperature. Meanwhile, when cooking or using a stove for production, the demand for higher overhead heat is higher, while the furnace temperature is lower. The aforementioned oxygen enrichment chamber structure has a single function and cannot adjust the furnace core temperature field according to demand. It can only adjust the heat by varying the amount of fuel added and the amount of air blown. This results in high emissions and increased fuel consumption, making the stove less economical and environmentally friendly. Utility Model Content

[0005] The technical problem to be solved by the utility model is: how to change the temperature field distribution of the furnace core according to demand.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] The utility model provides an oxygen-enhancing inner cylinder for a pellet fuel stove, comprising an inner cylinder body, annular sealing plates fixed at both ends of the inner cylinder body, the middle portion of the sealing plates being connected to the middle portion of the inner cylinder body, and the outer diameter of the sealing plates being larger than the outer diameter of the inner cylinder body; the inner cylinder body comprising an oxygen-supplementing section and a retaining section, a plurality of oxygen-enhancing holes being opened on the side wall of the oxygen-supplementing section, and the side wall of the retaining section being a closed structure.

[0008] The beneficial effects of the utility model are:

[0009] By adopting the utility model, the oxygen supplying section is placed in the furnace core with the oxygen supplying section facing downward or the holding section facing downward, so as to control the oxygen supplying time of the gasified fuel, realize the change of the temperature field distribution of the furnace core according to demand, increase the function, reduce the fuel consumption, and improve the economy and environmental protection of the stove; specifically, when the oxygen supplying section is facing downward, the temperature of the furnace is higher, which is suitable for situations with greater heating demand; when the holding section is facing downward, the fire power of the furnace mouth is maximum, which is suitable for cooking or production using the stove.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the sealing plate is sleeved on the inner cylinder body.

[0012] The inner space of the inner cylinder body is fully exposed to avoid obstruction of the flow of high-temperature flue gas.

[0013] Furthermore, the end of the sealing plate is flush with the end of the inner cylinder body.

[0014] When the inner cylinder body is taken out, it is convenient to place the inner cylinder body flat on the ground with one end facing downwards. The sealing plate can increase stability, prevent the inner cylinder body from rolling down from a high place, and improve safety.

[0015] Furthermore, the inner side of the sealing plate is welded to the outer side wall of the inner cylinder body.

[0016] The integrity is good, which improves the stability of the inner tube body and avoids deformation of the inner tube body due to high temperature; at the same time, it improves the sealing performance and prevents high-temperature flue gas from escaping from the oxygen increase hole and leaking from the inside of the sealing plate.

[0017] Furthermore, the inner cylinder body is a cylinder, and the sealing plate is a circular ring plate.

[0018] The processing cost is low, and it is easy to reduce the gap between the outer periphery of the sealing plate and the outer cylinder of the oxygen enrichment chamber to avoid leakage of high-temperature flue gas.

[0019] Furthermore, the oxygenation holes are distributed along the circumference of the oxygenation section, and oxygenation holes are provided in the middle and at both ends of the oxygenation section.

[0020] It is convenient to evenly supply oxygen to all directions of the gasified fuel, promote complete combustion, and have high thermal efficiency.

[0021] Furthermore, the oxygenation holes in the middle of the oxygen supply section are distributed in a spiral shape.

[0022] The gasified fuel is made to rise in a spiral shape, the mixing speed of air and fuel is fast, and the combustion is more complete; at the same time, the adhesion of the gasified fuel to the inner wall of the oxygen supply section is reduced, the fuel escape is avoided, and the thermal efficiency is improved.

[0023] Furthermore, the oxygenation holes at both ends of the oxygen supply section are distributed along a ring.

[0024] It is convenient to improve the oxygen supply efficiency and stabilize the flame shape.

[0025] The utility model also provides an oxygen enrichment device for a pellet fuel stove, comprising an oxygen enrichment bin outer cylinder, wherein the above-mentioned pellet fuel stove oxygen enrichment inner cylinder is arranged inside the oxygen enrichment bin outer cylinder, the outer peripheral side of the sealing plate is in contact with the inner side wall of the oxygen enrichment bin outer cylinder, and an air distribution port is opened on the side wall of the oxygen enrichment bin outer cylinder, and the air distribution port is located between the two sealing plates.

[0026] The inner oxygenation cylinder of the pellet fuel stove is taken out from the outer cylinder of the oxygenation chamber and its direction is reversed. The oxygenation section of the inner cylinder body is facing downward or the maintenance section is facing downward, thereby controlling the oxygenation time of the gasified fuel, realizing the change of the temperature field distribution of the furnace core according to demand, reducing fuel consumption, and improving the economy and environmental protection of the stove.

[0027] Furthermore, a support structure is provided in the outer cylinder of the oxygen enrichment chamber. The support structure is located below the inner cylinder body, and the lower end of the inner cylinder body is in contact with the support structure.

[0028] The support structure can adopt a support tube, the lower end of which is used to connect with the sand core in the furnace core, so as to provide support for the inner tube body and isolate the inner wall of the sand core and the inner wall of the outer tube of the oxygen enrichment chamber from the high-temperature flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of the oxygen-enhancing inner cylinder of the pellet fuel stove of the present invention.

[0030] Figure 2 This is a schematic diagram of the structure of the oxygen enrichment device for pellet fuel stoves.

[0031] In the accompanying drawings, the technical features represented by the reference numerals are as follows:

[0032] 1-oxygen supply section; 2-holding section; 3-sealing plate; 4-oxygenation hole; 5-oxygenation chamber outer tube; 6-air distribution outlet; 7-support structure. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] This utility model refers to Figure 1-2 .

[0035] like Figure 1 As shown:

[0036] The utility model provides an oxygen-enhancing inner cylinder for a pellet fuel stove, comprising an inner cylinder body, annular sealing plates 3 are fixed at both ends of the inner cylinder body, the middle portion of the sealing plates 3 is communicated with the middle portion of the inner cylinder body, and the outer diameter of the sealing plates 3 is larger than the outer diameter of the inner cylinder body; the inner cylinder body comprises an oxygen-supplementing section 1 and a retaining section 2, a plurality of oxygen-enhancing holes 4 are opened on the side wall of the oxygen-supplementing section 1, and the side wall of the retaining section 2 is a closed structure.

[0037] principle:

[0038] During installation, a support structure 7 is installed within the furnace core. The inner cylinder body is placed within the furnace core and supported by the support structure 7, so that the inner cylinder body is located above the furnace core. The two sealing plates 3 are in contact with the inner wall of the oxygen chamber outer cylinder 5 above the furnace core. Thus, the outer wall of the inner cylinder body, the two sealing plates 3, and the inner wall of the oxygen chamber outer cylinder 5 form an annular cavity. During operation, under the influence of the rising airflow within the furnace core, the air in the annular cavity enters the oxygenation section 1 through the oxygenation holes 4, allowing the vaporized fuel to be fully oxygenated and burned. Simultaneously, air outside the furnace core enters the annular cavity through the air distribution port 6 on the oxygen chamber outer cylinder 5 for preheating. When heating demand is high, the oxygenation section 1 is placed downward into the furnace core. This advances the oxygenation time of the vaporized fuel, allowing the high-temperature flue gas to fully react by the time it passes through the holding section 2. A large amount of heat is conducted or radiated through the inner cylinder body, resulting in a higher furnace temperature and lower firepower at the upper furnace mouth. When cooking or using the stove for production, keep section 2 facing downward and place it into the furnace core. Keep section 2 as a solid structure and do not add oxygen to the fuel. The oxygen addition time of the gasified fuel is delayed, so that the high-temperature flue gas will not fully react until it rises to close to the furnace mouth, so that the fire power at the furnace mouth is the largest, while the temperature of the furnace is lower.

[0039] By adopting the utility model, the oxygen supplying section 1 is placed downward or the holding section 2 is placed downward into the furnace core, thereby controlling the oxygen supplying time of the gasified fuel, realizing changing the temperature field distribution of the furnace core according to demand, increasing the function, reducing fuel consumption, and improving the economy and environmental protection of the stove; specifically, when the oxygen supplying section 1 is placed downward, the temperature of the furnace is higher, which is suitable for situations where there is a greater demand for heating; when the holding section 2 is placed downward, the firepower of the furnace mouth is maximum, which is suitable for situations where cooking or production using the stove is used.

[0040] Furthermore, the sealing plate 3 is sleeved on the inner cylinder body.

[0041] The inner space of the inner cylinder body is fully exposed to avoid obstruction of the flow of high-temperature flue gas.

[0042] Furthermore, the end of the sealing plate 3 is flush with the end of the inner cylinder body.

[0043] When the inner cylinder body is taken out, it is convenient to place the inner cylinder body with one end facing downward on the ground. The sealing plate 3 can increase the stability, prevent the inner cylinder body from rolling down from a high place, and improve safety.

[0044] Furthermore, the inner side of the sealing plate 3 is welded to the outer side wall of the inner cylinder body.

[0045] The integrity is good, which improves the stability of the inner tube body and avoids deformation of the inner tube body due to high temperature; at the same time, the sealing is improved to prevent high-temperature flue gas from escaping from the oxygenation hole 4 and leaking from the inside of the sealing plate 3.

[0046] Furthermore, the inner cylinder body is a cylinder, and the sealing plate 3 is a circular ring plate.

[0047] The processing cost is low, and it is convenient to reduce the gap between the outer periphery of the sealing plate 3 and the outer tube 5 of the oxygen enrichment chamber to avoid leakage of high-temperature flue gas.

[0048] Furthermore, the oxygenation holes 4 are distributed along the circumference of the oxygenation section 1 , and the middle and both ends of the oxygenation section 1 are provided with oxygenation holes 4 .

[0049] It is convenient to evenly supply oxygen to all directions of the gasified fuel, promote complete combustion, and have high thermal efficiency.

[0050] Furthermore, the oxygenation holes 4 in the middle of the oxygen supply section 1 are distributed in a spiral shape.

[0051] The gasified fuel is caused to rise in a spiral shape, the mixing speed of air and fuel is fast, and the combustion is more complete; at the same time, the adhesion of the gasified fuel to the inner wall of the oxygen supply section 1 is reduced, the fuel is prevented from escaping, and the thermal efficiency is improved.

[0052] Furthermore, the oxygenation holes 4 at both ends of the oxygen supply section 1 are distributed along a ring shape.

[0053] It is convenient to improve the oxygen supply efficiency and stabilize the flame shape.

[0054] like Figure 2 As shown:

[0055] The present utility model also provides an oxygen enrichment device for a pellet fuel stove, comprising an oxygen enrichment bin outer cylinder 5, wherein the above-mentioned pellet fuel stove oxygen enrichment inner cylinder is arranged inside the oxygen enrichment bin outer cylinder 5, the outer peripheral side of the sealing plate 3 is in contact with the inner side wall of the oxygen enrichment bin outer cylinder 5, and an air distribution port 6 is opened on the side wall of the oxygen enrichment bin outer cylinder 5, and the air distribution port 6 is located between the two sealing plates 3.

[0056] The lower end of the outer tube 5 of the oxygen enrichment chamber can be directly connected to the fuel tube of the furnace core. The oxygen enrichment inner tube of the pellet fuel stove is taken out from the outer tube 5 of the oxygen enrichment chamber and the direction is changed. The oxygen supply section 1 of the inner tube body is facing downward or the maintenance section 2 is facing downward, thereby controlling the oxygen supply time of the gasified fuel, realizing the change of the temperature field distribution of the furnace core according to demand, reducing fuel consumption, and improving the economy and environmental protection of the stove.

[0057] Furthermore, a support structure 7 is provided in the outer cylinder 5 of the oxygen enrichment chamber. The support structure 7 is located below the inner cylinder body, and the lower end of the inner cylinder body is in contact with the support structure 7.

[0058] The support structure 7 can be a support tube, the lower end of which is used to connect with the sand core in the furnace core to provide support for the inner tube body, while isolating the inner wall of the sand core and the inner wall of the outer tube 5 of the oxygen enrichment chamber from the high-temperature flue gas.

[0059] In the description of the present invention, it should be understood that if there are descriptive terms indicating orientation, direction or positional relationship, such as: "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of understanding the present invention and simplifying the description, and does not indicate or imply that the referred part, element or whole must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0060] In addition, if there are order description terms, such as "first", "second", etc., their use in this specification is to facilitate understanding or simplify the description. For example, in order to distinguish multiple technical features with the same type or function, but they have to be mentioned separately, this specification may use prefix or suffix order description terms to distinguish them. Therefore, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of such features. In the description of this utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the present invention, if terms describing the relative functional relationship of structures are used, such as "install", "connect", "connect", "fix", etc., they should be understood in a broad sense unless otherwise clearly specified and limited. For example, "install", "connect", "connect", etc. can be fixed connections, detachable connections, or integrated; can be mechanical connections or electrical connections; can be direct connections or indirect connections through an intermediate medium, can be internal connections between two elements or interactive relationships between two elements; "fix" can be fixed to form an integral body, or can be detachably fixed through fasteners; can be directly fixed or fixed through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above-mentioned descriptive terms in the present invention can be understood according to the specific circumstances, the context, the coherence of the preceding and following texts, etc.

[0062] In this utility model, if descriptive terms with ancillary or connecting meaning appear, for example, a first feature being "on" or "below" a second feature, these should not be interpreted as limiting unless otherwise expressly specified or limited. For example, "on" or "below" may refer to direct contact between the first and second features, or indirect contact between the first and second features through an intermediary. Those skilled in the art will understand the specific meanings of these descriptive terms in this utility model based on the specific circumstances, context, and coherence of the preceding and following texts.

[0063] Furthermore, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments, examples and features of different embodiments and examples described in this specification, unless there is any contradiction, and these combinations or combinations should all fall within the scope summarized by the present invention.

[0065] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in the field within the scope of information available from public channels and in combination with the technical inspiration given by the application documents are still within the scope of protection of the present application.

Claims

1. An oxygen-enhancing inner cylinder for a pellet fuel stove, characterized by: The invention comprises an inner cylinder body, an annular sealing plate (3) is fixed at both ends of the inner cylinder body, the middle part of the sealing plate (3) is connected to the middle part of the inner cylinder body, and the outer diameter of the sealing plate (3) is larger than the outer diameter of the inner cylinder body; the inner cylinder body comprises an oxygen supply section (1) and a holding section (2), a plurality of oxygenation holes (4) are opened on the side wall of the oxygen supply section (1), and the side wall of the holding section (2) is a closed structure.

2. The oxygen-enhancing inner cylinder of a pellet fuel stove according to claim 1, characterized in that: The sealing plate (3) is sleeved on the inner cylinder body.

3. The oxygen-enhancing inner cylinder of a pellet fuel stove according to claim 2, characterized in that: The end of the sealing plate (3) is flush with the end of the inner cylinder body.

4. The oxygen-enhancing inner cylinder of a pellet fuel stove according to claim 2, characterized in that: The inner side of the sealing plate (3) is welded to the outer side wall of the inner cylinder body.

5. The oxygen-enhancing inner cylinder of a pellet fuel stove according to claim 2, characterized in that: The inner cylinder body is a cylinder, and the sealing plate (3) is a circular ring plate.

6. The oxygen-enhancing inner cylinder of a pellet fuel stove according to claim 1, characterized in that: The oxygenation holes (4) are distributed along the circumference of the oxygenation section (1), and the middle and both ends of the oxygenation section (1) are provided with oxygenation holes (4).

7. The oxygen-enhancing inner cylinder of a pellet fuel stove according to claim 6, characterized in that: The oxygenation holes (4) in the middle of the oxygenation section (1) are distributed in a spiral shape.

8. The oxygen-enhancing inner cylinder of a pellet fuel stove according to claim 7, characterized in that: The oxygenation holes (4) at both ends of the oxygenation section (1) are distributed along a ring shape.

9. A particle fuel stove oxygen enrichment device, characterized by: The oxygen enrichment chamber outer cylinder (5) is provided with the particle fuel stove oxygen enrichment inner cylinder according to any one of claims 1 to 8, the outer peripheral side of the sealing plate (3) is in contact with the inner side wall of the oxygen enrichment chamber outer cylinder (5), and an air distribution port (6) is provided on the side wall of the oxygen enrichment chamber outer cylinder (5), and the air distribution port (6) is located between the two sealing plates (3).

10. The particle fuel stove oxygen enrichment device according to claim 9, characterized in that: A support structure (7) is further provided in the outer cylinder (5) of the oxygen enrichment chamber. The support structure (7) is located below the inner cylinder body, and the lower end of the inner cylinder body is in contact with the support structure (7).

Images