Oxygenation heating stove

Abstract

The utility model provides an oxygenation heating stove which comprises a base, a surrounding cylinder and a fuel cylinder are arranged on the base, and the fuel cylinder is located in the surrounding cylinder. A lower sealing ring and an upper sealing ring are further arranged on the inner side wall of the surrounding barrel, an oxygen increasing bin outer barrel is further arranged above the fuel barrel, a supporting barrel is arranged in the fuel barrel, an oxygen increasing bin inner barrel is arranged in the oxygen increasing bin outer barrel, and the lower end of the oxygen increasing bin inner barrel is in sealing contact with the upper end of the supporting barrel; annular sealing plates are arranged on the outer sides of the two ends of the oxygenation bin inner cylinder, and the peripheries of the sealing plates make contact with the inner side wall of the oxygenation bin outer cylinder. A smoke outlet structure is further arranged at the position, higher than the upper sealing ring, of the surrounding cylinder. According to the utility model, when the inner cylinder of the oxygenation bin fails, the inner cylinder can be directly taken out for replacement, so that the part replacement difficulty is reduced; meanwhile, the material waste of the outer barrel of the oxygenation bin is avoided, and the maintenance cost of the stove is reduced; the upper sealing ring and the lower sealing ring shield the annular space on the inner side of the shroud, and the heat preservation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass particle heating stoves, in particular to an oxygen-enriched heating stove. Background Art

[0002] When a biomass pellet stove burns, the air distribution structure above the core is subjected to higher temperatures, making it more susceptible to corrosion and aging, shortening its service life. When this structure shows signs of corrosion or aging, the core must be replaced or repaired. However, the cost of replacing the core is prohibitive. Furthermore, some cores are integral to the furnace, making them difficult to replace independently. This often results in premature failure of the entire stove, resulting in high overall operating costs and poor economic efficiency.

[0003] In response to this, some innovative designs have separated the air distribution structure from the fuel cylinder into a separate oxygen hopper, with the lower end of the hopper docked with the upper end of the fuel cylinder. This allows the hopper to be replaced independently if it erodes, reducing operating costs. However, the double-layer structure of the hopper makes it heavy and difficult to remove, and replacement still results in wasted metal from the outer shell of the hopper. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to reduce the difficulty of replacing the oxygen enrichment chamber and reduce the maintenance cost of the stove at the same time.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] The utility model provides an oxygen-enriched heating stove, comprising a base, wherein a surrounding tube and a fuel tube are provided on the base, and the fuel tube is located inside the surrounding tube; a lower sealing ring and an upper sealing ring are also provided on the inner side wall of the surrounding tube, and the lower part of the outer side wall of the fuel tube is in contact with the lower sealing ring, and an oxygen enrichment bin outer tube is also provided above the fuel tube, and the upper part of the outer side wall of the oxygen enrichment bin outer tube is in contact with the upper sealing ring; a support tube is provided inside the fuel tube, and an oxygen enrichment bin inner tube is provided inside the oxygen enrichment bin outer tube, and the lower end of the oxygen enrichment bin inner tube is in sealing contact with the upper end of the support tube; annular sealing plates are provided on the outer sides of both ends of the oxygen enrichment bin inner tube, and the outer periphery of the sealing plate is in contact with the inner side wall of the oxygen enrichment bin outer tube; a smoke outlet structure is also provided on the surrounding tube and at a position higher than the upper sealing ring.

[0007] The beneficial effects of the utility model are:

[0008] This utility model features a detachable structure between the inner and outer cylinders of the oxygenation chamber. If the inner cylinder fails, it can be removed and replaced. The inner cylinder weighs less than half the weight of the original, simplifying parts replacement. This also avoids material waste from the outer cylinder, reducing furnace maintenance costs. Furthermore, the upper and lower sealing rings block the annular space inside the surrounding cylinder, enhancing thermal insulation.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the lower portion of the outer wall of the fuel cylinder is welded to the lower sealing ring, and the upper portion of the outer wall of the oxygen enrichment chamber outer cylinder is welded to the upper sealing ring.

[0011] The surrounding tube is connected to the furnace core as a whole, which improves the strength of the furnace body; at the same time, a closed annular space is formed between the surrounding tube and the furnace core, which plays a role in heat preservation and improves the heating capacity of the stove.

[0012] Furthermore, the outer cylinder of the oxygen enrichment chamber and the fuel cylinder are integrally formed.

[0013] The outer tube of the oxygen enrichment chamber and the fuel tube can be processed and formed with the same tube body, which makes it easy to control the outer wall to be flush, convenient processing and low cost; in addition, there is no gap between the outer tube of the oxygen enrichment chamber and the fuel tube, which avoids smoke leakage and ensures that the smoke rises within the furnace core and burns more fully.

[0014] Furthermore, the upper end of the outer cylinder of the oxygen enrichment chamber is higher than the upper end of the inner cylinder of the oxygen enrichment chamber, the sealing plate and the upper sealing ring.

[0015] It is easy to install and can guide the flame to the top of the stove, thereby increasing the firepower and facilitating heating of the fire-using equipment above the stove.

[0016] Furthermore, a support core is provided in the fuel cylinder, and the upper end of the support core is connected to the lower end of the support cylinder.

[0017] The biomass pellet fuel burns in the support core, and the gasified fuel directly enters the support tube upwards; the volume of the support tube is reduced, making it easier to replace the support tube.

[0018] Furthermore, the lower end of the support tube is embedded in the support core, and the support core is a sand core.

[0019] The sand core is used, and the heat transfer speed is low; the lower end of the support tube is embedded in the support core, which avoids the leakage of high-temperature flue gas from the gap at the lower end of the support tube; it is easy to reduce the temperature that the fuel tube bears and has a long service life.

[0020] Furthermore, a furnace bottom structure is provided at the bottom of the fuel cylinder, and the lower end of the burner core is in contact with the furnace bottom structure; the inner side wall of the support cylinder is flush with the inner side wall of the burner core.

[0021] It is convenient to support the burning core and easy to install; it is convenient to make the gasified fuel rise evenly.

[0022] Furthermore, a feed port is provided on the side wall of the support tube, and a feed chute is provided on the inner side wall of the surrounding tube, and the lower end of the feed chute passes through the side wall of the fuel tube and extends into the feed chute; a feeder is provided on the outer side wall of the surrounding tube, and the outlet end of the feeder passes through the surrounding tube and extends into the feed chute.

[0023] The biomass fuel can slide into the burning core through the feeding chute, which is convenient for adding fuel during the working process.

[0024] Furthermore, an air distribution port is provided on the side wall of the outer tube of the oxygenation bin, and an air distribution channel is provided on the outer side wall of the outer tube of the oxygenation bin. The air distribution channel is vertically arranged along the outer side wall of the outer tube of the oxygenation bin, the upper end of the air distribution channel is closed, and one side of the upper part of the air distribution channel is connected with the air distribution port, and the lower end of the air distribution channel passes through the lower sealing ring; a plurality of oxygenation holes are evenly distributed on the side wall of the inner tube of the oxygenation bin, and the oxygenation holes and the air distribution port are both located between the two sealing plates.

[0025] The air at the bottom of the furnace flows upward along the air distribution channel and enters the air distribution port, then enters the inner tube of the oxygen enrichment chamber along the oxygen enrichment hole to supplement oxygen for the fuel gas combustion; the outer wall of the outer tube of the oxygen enrichment chamber is used to preheat the air, thereby improving the thermal efficiency of the furnace.

[0026] Furthermore, the smoke outlet structure is a cigarette pack, and a chimney joint is provided on the cigarette pack.

[0027] Convenient for smoke exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the present utility model.

[0029] Figure 2 It is a structural diagram of the fuel cylinder and oxygen enrichment chamber.

[0030] Figure 3 It is a three-dimensional schematic diagram of the inner cylinder of the oxygen enrichment chamber.

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

[0032] 1-base; 2-circumferential tube; 3-fuel tube; 4-lower sealing ring; 5-upper sealing ring; 6-oxygenation chamber outer tube; 7-oxygenation chamber inner tube; 8-support tube; 9-sealing plate; 10-burning core; 11-furnace bottom structure; 12-ignition rod; 13-feed port; 14-feed chute; 15-feeder; 16-air distribution port; 17-air distribution channel; 18-oxygenation hole; 19-cigarette bag; 20-chimney joint. 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 1-3 .

[0035] The utility model provides an oxygen-enriched heating stove, comprising a base 1, on which a surrounding cylinder 2 and a fuel cylinder 3 are provided, and the fuel cylinder 3 is located inside the surrounding cylinder 2; a lower sealing ring 4 and an upper sealing ring 5 are also provided on the inner side wall of the surrounding cylinder 2, and the lower part of the outer side wall of the fuel cylinder 3 is in contact with the lower sealing ring 4, and an oxygen-enriched bin outer cylinder 6 is also provided above the fuel cylinder 3, and the upper part of the outer side wall of the oxygen-enriched bin outer cylinder 6 is in contact with the upper sealing ring 5; a support cylinder 8 is provided inside the fuel cylinder 3, and an oxygen-enriched bin inner cylinder 7 is provided inside the oxygen-enriched bin outer cylinder 6, and the lower end of the oxygen-enriched bin inner cylinder 7 is in sealing contact with the upper end of the support cylinder 8; an annular sealing plate 9 is provided on the outer side of both ends of the oxygen-enriched bin inner cylinder 7, and the outer periphery of the sealing plate 9 is in contact with the inner side wall of the oxygen-enriched bin outer cylinder 6; a smoke outlet structure is also provided on the surrounding cylinder 2 and at a position higher than the upper sealing ring 5.

[0036] principle:

[0037] The fuel cylinder 3, the oxygen enrichment chamber outer cylinder 6 and their internal structure constitute the furnace core of the stove. The bottom of the fuel cylinder 3 is provided with a furnace bottom structure 11.

[0038] During operation, the biomass fuel is gasified and burned in the inner range of the support tube 8, and the gasified fuel flows upward to the oxygenation chamber inner tube 7. The air first enters the annular cavity between the oxygenation chamber outer tube 6 and the oxygenation chamber inner tube 7 from the opening reserved in the oxygenation chamber outer tube 6, and then enters the oxygenation chamber inner tube 7 from the air supply structure on the oxygenation chamber inner tube 7, so that the gasified fuel and air are fully mixed and burned. Subsequently, the high-temperature flue gas flows into the surrounding tube 2 where the upper end of the oxygenation chamber outer tube 6 is located, and finally flows out from the smoke outlet structure. Due to the concentrated flame and oxygen supply combustion, the oxygenation chamber inner tube 7 itself is subjected to a relatively high temperature. When the oxygenation chamber inner tube 7 shows phenomena such as ablation and aging, the air supply structure on the oxygenation chamber inner tube 7 can be hooked with a hook, and the oxygenation chamber inner tube 7 can be taken out and replaced separately.

[0039] The present invention features a detachable structure between the oxygenation chamber inner cylinder 7 and the oxygenation chamber outer cylinder 6. If the oxygenation chamber inner cylinder 7 fails, it can be directly removed and replaced. The weight of the oxygenation chamber inner cylinder 7 is less than half that of the original oxygenation chamber, simplifying parts replacement. This also avoids material waste in the oxygenation chamber outer cylinder 6, reducing stove maintenance costs. Furthermore, the upper and lower sealing rings 5 ​​and 4 block the annular space inside the surrounding cylinder 2, enhancing thermal insulation.

[0040] Furthermore, the lower portion of the outer wall of the fuel cylinder 3 is welded to the lower sealing ring 4 , and the upper portion of the outer wall of the oxygen enrichment chamber outer cylinder 6 is welded to the upper sealing ring 5 .

[0041] The surrounding tube 2 is connected to the furnace core as a whole, which improves the strength of the furnace body; at the same time, a closed annular space is formed between the surrounding tube 2 and the furnace core, which plays a role in heat preservation and improves the heating capacity of the stove.

[0042] Furthermore, the oxygen enrichment chamber outer cylinder 6 and the fuel cylinder 3 are integrally formed.

[0043] The outer tube 6 of the oxygen enrichment chamber and the fuel tube 3 can be formed by the same cylinder, which makes it easy to control the outer wall to be flush, convenient to process and low in cost; in addition, there is no gap between the outer tube 6 of the oxygen enrichment chamber and the fuel tube 3, which avoids smoke leakage and ensures that the smoke rises within the furnace core and burns more fully.

[0044] Furthermore, the upper end of the oxygen enrichment chamber outer tube 6 is higher than the upper end of the oxygen enrichment chamber inner tube 7 , the sealing plate 9 and the upper sealing ring 5 .

[0045] It is easy to install and can guide the flame to the top of the stove, thereby increasing the firepower and facilitating heating of the fire-using equipment above the stove.

[0046] Furthermore, a support core 10 is provided in the fuel cylinder 3 , and the upper end of the support core 10 is connected to the lower end of the support cylinder 8 .

[0047] The biomass pellet fuel burns in the support core 10, and the gasified fuel directly enters the support tube 8 upwards; the volume of the support tube 8 is reduced, making it easier to replace the support tube 8.

[0048] Furthermore, the lower end of the support tube 8 is embedded in the support core 10, and the support core 10 is a sand core.

[0049] The sand core has a low heat transfer rate; the lower end of the support tube 8 is embedded in the support core 10, which avoids the leakage of high-temperature flue gas from the gap at the lower end of the support tube 8; it is easy to reduce the temperature that the fuel tube 3 withstands and has a long service life.

[0050] Furthermore, a furnace bottom structure 11 is provided at the bottom of the fuel cylinder 3 , and the lower end of the burner core 10 is in contact with the furnace bottom structure 11 ; the inner side wall of the support cylinder 8 is flush with the inner side wall of the burner core 10 .

[0051] Preferably, an ignition rod 12 is further included, one end of which passes through the side wall of the shroud 2, the fuel cylinder 3 and the side wall of the burner core 10 and extends to the furnace bottom structure 11. The middle part of the furnace bottom structure 11 can be a furnace bridge or other ash cleaning structure to facilitate fuel combustion and ash cleaning.

[0052] It is convenient to support the burner core 10 and is easy to install; it is convenient to make the gasified fuel rise evenly.

[0053] Furthermore, a feed port 13 is provided on the side wall of the support tube 8, and a feed chute 14 is provided on the inner wall of the surrounding tube 2. The lower end of the feed chute 14 passes through the side wall of the fuel tube 3 and extends into the feed chute 14; a feeder 15 is provided on the outer wall of the surrounding tube 2, and the outlet end of the feeder 15 passes through the surrounding tube 2 and extends into the feed chute 14.

[0054] Note: The feeder 15 may be a screw conveyor, and a hopper is provided at the inlet end of the screw conveyor.

[0055] The biomass fuel can slide into the support core 10 through the feed chute 14, which is convenient for adding fuel and can be added during the working process.

[0056] Furthermore, an air distribution port 16 is provided on the side wall of the outer tube 6 of the oxygenation bin, and an air distribution channel 17 is provided on the outer side wall of the outer tube 6 of the oxygenation bin. The air distribution channel 17 is vertically arranged along the outer side wall of the outer tube 6 of the oxygenation bin, and the upper end of the air distribution channel 17 is closed. One side of the upper part of the air distribution channel 17 is connected with the air distribution port 16, and the lower end of the air distribution channel 17 passes through the lower sealing ring 4; a plurality of oxygenation holes 18 are evenly distributed on the side wall of the inner tube 7 of the oxygenation bin, and the oxygenation holes 18 and the air distribution port 16 are both located between the two sealing plates 9.

[0057] Preferably, there are two air distribution ports 16 and two oxygen enrichment chamber outer tube 6, and both are located on opposite sides of the oxygen enrichment chamber outer tube 6. The figure adopts a rotating cross-sectional drawing method. In fact, the air distribution channel 17 and the feed port 13 are staggered with each other in the circumferential direction of the fuel cylinder 3.

[0058] The air at the bottom of the furnace flows upward along the air distribution channel 17 and enters the air distribution port 16, and then enters the oxygen enrichment chamber inner tube 7 along the oxygen enrichment hole 18 to supplement oxygen for the combustion of the fuel gas; the air is preheated by using the outer wall of the oxygen enrichment chamber outer tube 6, thereby improving the thermal efficiency of the furnace.

[0059] Furthermore, the smoke outlet structure is a smoke package 19 , and a chimney joint 20 is provided on the smoke package 19 .

[0060] Convenient for smoke exhaust.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] Furthermore, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or diagonally 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 diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] 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.

[0067] 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-enriched heating stove, characterized in that: The invention comprises a base (1), wherein a surrounding cylinder (2) and a fuel cylinder (3) are provided on the base (1), and the fuel cylinder (3) is located inside the surrounding cylinder (2); a lower sealing ring (4) and an upper sealing ring (5) are also provided on the inner side wall of the surrounding cylinder (2), and the lower part of the outer side wall of the fuel cylinder (3) contacts the lower sealing ring (4); an oxygenation chamber outer cylinder (6) is also provided above the fuel cylinder (3), and the upper part of the outer side wall of the oxygenation chamber outer cylinder (6) contacts the upper sealing ring (5); A support cylinder (8) is provided in the fuel cylinder (3), an oxygenation chamber inner cylinder (7) is provided in the oxygenation chamber outer cylinder (6), and the lower end of the oxygenation chamber inner cylinder (7) is in sealed contact with the upper end of the support cylinder (8); an annular sealing plate (9) is provided on the outer side of both ends of the oxygenation chamber inner cylinder (7), and the outer periphery of the sealing plate (9) is in contact with the inner side wall of the oxygenation chamber outer cylinder (6); a smoke outlet structure is also provided on the surrounding cylinder (2) and at a position higher than the upper sealing ring (5).

2. The oxygen-enriched heating stove according to claim 1, characterized in that: The lower portion of the outer wall of the fuel cylinder (3) is welded to the lower sealing ring (4), and the upper portion of the outer wall of the oxygen enrichment chamber outer cylinder (6) is welded to the upper sealing ring (5).

3. The oxygen-enriched heating stove according to claim 2, characterized in that: The oxygen enrichment chamber outer cylinder (6) and the fuel cylinder (3) are integrally formed.

4. The oxygen-enriched heating stove according to claim 2, characterized in that: The upper end of the oxygenation chamber outer cylinder (6) is higher than the upper end of the oxygenation chamber inner cylinder (7), the sealing plate (9) and the upper sealing ring (5).

5. The oxygen-enriched heating stove according to claim 1, characterized in that: A support core (10) is also provided in the fuel cylinder (3), and the upper end of the support core (10) is connected to the lower end of the support cylinder (8).

6. The oxygen-enriched heating stove according to claim 5, characterized in that: The lower end of the support tube (8) is embedded in the support core (10), and the support core (10) is a sand core.

7. The oxygen-enriched heating stove according to claim 5, characterized in that: The bottom of the fuel cylinder (3) is provided with a furnace bottom structure (11), and the lower end of the burner core (10) contacts the furnace bottom structure (11); the inner side wall of the support cylinder (8) is flush with the inner side wall of the burner core (10).

8. The oxygen-enriched heating stove according to claim 1, characterized in that: A feed port (13) is provided on the side wall of the support tube (8), a feed chute (14) is provided on the inner side wall of the surrounding tube (2), and the lower end of the feed chute (14) passes through the side wall of the fuel tube (3) and extends into the feed chute (14); a feeder (15) is provided on the outer side wall of the surrounding tube (2), and the outlet end of the feeder (15) passes through the surrounding tube (2) and extends into the feed chute (14).

9. The oxygen-enriched heating stove according to claim 1, characterized in that: An air distribution port (16) is provided on the side wall of the outer cylinder (6) of the oxygenation bin, and an air distribution channel (17) is provided on the outer side wall of the outer cylinder (6) of the oxygenation bin. The air distribution channel (17) is vertically arranged along the outer side wall of the outer cylinder (6) of the oxygenation bin, the upper end of the air distribution channel (17) is closed, one side of the upper part of the air distribution channel (17) is connected to the air distribution port (16), and the lower end of the air distribution channel (17) passes through the lower sealing ring (4); a plurality of oxygenation holes (18) are evenly distributed on the side wall of the inner cylinder (7) of the oxygenation bin, and the oxygenation holes (18) and the air distribution port (16) are both located between the two sealing plates (9).

10. The oxygen-enriched heating stove according to claim 1, characterized in that: The smoke outlet structure is a smoke bag (19), and a chimney joint (20) is provided on the smoke bag (19).

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