Furnace core with replaceable oxygenation cylinder

Abstract

The utility model provides a furnace core with a replaceable oxygenation cylinder, which comprises a fuel cylinder and an oxygenation bin outer cylinder, the lower end of the oxygenation bin outer cylinder is in butt joint with the upper end of the fuel cylinder, a support cylinder is arranged in the fuel cylinder, an oxygenation bin inner cylinder is arranged in the oxygenation bin outer cylinder, and the lower end of the oxygenation bin inner cylinder is in sealing contact with the upper end of the support cylinder; 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 sealing contact with the inner side wall of the oxygenation bin outer cylinder. According to the utility model, when the inner barrel of the oxygenation bin fails, the inner barrel can be directly taken out and replaced, and the weight of the inner barrel of the oxygenation bin is less than half of that of the original oxygenation bin, so that the part replacement difficulty is reduced; the material waste of the outer barrel of the oxygenation bin is avoided, and the maintenance cost of the furnace core is reduced. Furthermore, a burning bearing core is further arranged in the fuel barrel, and the upper end of the burning bearing core is in butt joint with the lower end of the supporting barrel. The lower end of the supporting cylinder is embedded into the burning bearing core which is a sand core.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass particle heating stoves, in particular to a stove core with a replaceable oxygenating cylinder. 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 bin and reduce the maintenance cost of the furnace core 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 a furnace core with a replaceable oxygen enrichment cylinder, comprising a fuel cylinder and an oxygen enrichment chamber outer cylinder, the lower end of the oxygen enrichment chamber outer cylinder is butted against the upper end of the fuel cylinder, a support cylinder is provided inside the fuel cylinder, an oxygen enrichment chamber inner cylinder is provided inside the oxygen enrichment chamber outer cylinder, the lower end of the oxygen enrichment chamber inner cylinder is in sealing contact with the upper end of the support cylinder; an annular sealing plate is provided on the outer side of both ends of the oxygen enrichment chamber inner cylinder, and the outer periphery of the sealing plate is in sealing contact with the inner side wall of the oxygen enrichment chamber outer cylinder.

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

[0008] By adopting the utility model, a detachable structure is formed between the inner cylinder of the oxygenation chamber and the outer cylinder of the oxygenation chamber. When the inner cylinder of the oxygenation chamber fails, it can be directly taken out and replaced. The weight of the inner cylinder of the oxygenation chamber is less than half of the original oxygenation chamber, thereby reducing the difficulty of replacing parts; at the same time, the material waste of the outer cylinder of the oxygenation chamber is avoided, and the maintenance cost of the furnace core is reduced.

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

[0010] 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.

[0011] 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.

[0012] Furthermore, the lower end of the support tube is embedded in the support core, and the support core is a sand core.

[0013] 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 convenient to reduce the temperature that the fuel tube bears and has a long service life.

[0014] 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.

[0015] It is convenient to support the burning core and easy to install; it is convenient to make the gasified fuel rise evenly.

[0016] Furthermore, the upper end of the outer cylinder of the oxygenation chamber is higher than the upper end of the inner cylinder of the oxygenation chamber and the sealing plate.

[0017] It is easy to install and ensures the sealing of the sealing plate and the outer cylinder of the oxygen enrichment chamber.

[0018] Furthermore, an air distribution port is provided on the side wall of the outer tube of the oxygenation chamber, and an air distribution channel is provided on the outer side wall of the outer tube of the oxygenation chamber. The air distribution channel is in sealed contact with the outer side wall of the outer tube of the oxygenation chamber, and the air distribution channel is connected to the air distribution port; the air distribution port is located between the two sealing plates.

[0019] The air at the bottom of the furnace flows upward along the air distribution channel and then enters the air distribution port, which facilitates preheating of the air and improves the thermal efficiency of the furnace.

[0020] Furthermore, the outer side wall of the outer tube of the oxygen enrichment chamber is flush with the outer side wall of the fuel tube, and the lower end of the air distribution channel is arranged along the outer side wall of the fuel tube.

[0021] This makes it easier to fully utilize the heat on the fuel cylinder and improve the thermal efficiency of the stove; at the same time, it stabilizes the air inlet speed of the air distribution port.

[0022] Furthermore, the lower end of the outer cylinder of the oxygen enrichment chamber is integrally connected to the upper end of the fuel cylinder.

[0023] 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.

[0024] Furthermore, a plurality of oxygenation holes are evenly distributed on the side wall of the inner cylinder of the oxygenation chamber, and the oxygenation holes are all located between the two sealing plates.

[0025] It is convenient for the air between the inner cylinder of the oxygenation chamber and the outer cylinder of the oxygenation chamber to enter the inner cylinder of the oxygenation chamber.

[0026] Furthermore, it also includes a feed chute, and a feed port is opened on the side wall of the support tube. The lower end of the feed chute passes through the side wall of the fuel cylinder and extends into the feed chute.

[0027] The biomass fuel can slide into the burning core through the feeding chute, which makes the feeding convenient. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 2 This is a schematic diagram of the structure of the inner cylinder of the oxygenation 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-Fuel cylinder; 2-Oxygen enrichment chamber outer cylinder; 3-Oxygen enrichment chamber inner cylinder; 4-Support cylinder; 5-Sealing plate; 6-Air distribution port; 7-Air distribution channel; 8-Oxygen enrichment hole; 9-Supporting core; 10-Feed chute; 11-Feed port; 12-Furnace bottom structure; 13-Ignition rod. 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 a furnace core with a replaceable oxygen enrichment cylinder, comprising a fuel cylinder 1 and an oxygen enrichment chamber outer cylinder 2, the lower end of the oxygen enrichment chamber outer cylinder 2 being connected to the upper end of the fuel cylinder 1, a support cylinder 4 being provided inside the fuel cylinder 1, an oxygen enrichment chamber inner cylinder 3 being provided inside the oxygen enrichment chamber outer cylinder 2, the lower end of the oxygen enrichment chamber inner cylinder 3 being in sealing contact with the upper end of the support cylinder 4; an annular sealing plate 5 is provided on the outer side of both ends of the oxygen enrichment chamber inner cylinder 3, and the outer periphery of the sealing plate 5 is in sealing contact with the inner side wall of the oxygen enrichment chamber outer cylinder 2.

[0036] principle:

[0037] During operation, the biomass fuel vaporizes and burns within the inner area of ​​the support tube 4. The vaporized fuel flows upward to the oxygenation chamber inner tube 3. Air first enters the annular cavity between the oxygenation chamber outer tube 2 and the oxygenation chamber inner tube 3 from the reserved opening of the oxygenation chamber outer tube 2, and then enters the oxygenation chamber inner tube 3 from the air supply structure on the oxygenation chamber inner tube 3, so that the vaporized fuel and air are fully mixed and burned. Due to the concentrated flame and oxygen supply combustion, the oxygenation chamber inner tube 3 itself is subjected to high temperatures. When the oxygenation chamber inner tube 3 shows signs of ablation or aging, the air supply structure on the oxygenation chamber inner tube 3 can be hooked with a hook to remove and replace the oxygenation chamber inner tube 3 separately.

[0038] With the present invention, a detachable structure is formed between the inner cylinder 3 of the oxygenation chamber and the outer cylinder 2 of the oxygenation chamber. When the inner cylinder 3 of the oxygenation chamber fails, it can be directly taken out and replaced. The weight of the inner cylinder 3 of the oxygenation chamber is less than half of the original oxygenation chamber, thereby reducing the difficulty of replacing parts; at the same time, the material waste of the outer cylinder 2 of the oxygenation chamber is avoided, and the maintenance cost of the furnace core is reduced.

[0039] Furthermore, a support core 9 is provided in the fuel cylinder 1 , and the upper end of the support core 9 is butted against the lower end of the support cylinder 4 .

[0040] The biomass pellet fuel burns in the support core 9, and the gasified fuel directly enters the support tube 4 upwards; the volume of the support tube 4 is reduced, making it easier to replace the support tube 4.

[0041] Furthermore, the lower end of the support tube 4 is embedded in the support core 9, and the support core 9 is a sand core.

[0042] The sand core has a low heat transfer rate; the lower end of the support tube 4 is embedded in the support core 9, which avoids the leakage of high-temperature flue gas from the gap at the lower end of the support tube 4; it is easy to reduce the temperature that the fuel tube 1 withstands and has a long service life.

[0043] Furthermore, a furnace bottom structure 12 is provided at the bottom of the fuel cylinder 1 , and the lower end of the burner core 9 contacts the furnace bottom structure 12 ; the inner side wall of the support cylinder 4 is flush with the inner side wall of the burner core 9 .

[0044] Preferably, an ignition rod 13 is further included, one end of which passes through the side wall of the fuel cylinder 1 and the side wall of the burner core 9 and extends to the furnace bottom structure 12. The middle part of the furnace bottom structure 12 can be a furnace bridge or other ash cleaning structure to facilitate supporting fuel combustion and ash cleaning.

[0045] It is convenient to support the burner core 9 and easy to install; it is convenient to make the gasified fuel rise evenly.

[0046] Furthermore, the upper end of the outer cylinder 2 of the oxygen enrichment chamber is higher than the upper end of the inner cylinder 3 of the oxygen enrichment chamber and the sealing plate 5.

[0047] It is easy to install and ensures the sealing performance of the sealing plate 5 and the outer cylinder 2 of the oxygen enrichment chamber.

[0048] Furthermore, an air distribution port 6 is provided on the side wall of the outer tube 2 of the oxygenation chamber, and an air distribution channel 7 is provided on the outer side wall of the outer tube 2 of the oxygenation chamber. The air distribution channel 7 is in sealed contact with the outer side wall of the outer tube 2 of the oxygenation chamber, and the air distribution channel 7 is connected to the air distribution port 6; the air distribution port 6 is located between the two sealing plates 5.

[0049] Preferably, there are two air distribution ports 6 and two oxygen enrichment chamber outer cylinder 2 , and both are located on opposite sides of the oxygen enrichment chamber outer cylinder 2 .

[0050] The air at the bottom of the furnace flows upward along the air distribution channel 7 and then enters the air distribution port 6, which facilitates preheating of the air and improves the thermal efficiency of the furnace.

[0051] Furthermore, the outer side wall of the oxygen enrichment chamber outer tube 2 is flush with the outer side wall of the fuel tube 1 , and the lower end of the air distribution channel 7 is arranged along the outer side wall of the fuel tube 1 .

[0052] This facilitates full utilization of the heat on the fuel cylinder 1 and improves the thermal efficiency of the stove; at the same time, the air inlet speed of the air distribution port 6 is stabilized.

[0053] Furthermore, the lower end of the oxygen enrichment chamber outer cylinder 2 and the upper end of the fuel cylinder 1 are integrally formed.

[0054] The outer tube 2 of the oxygen enrichment chamber and the fuel tube 1 can be processed and formed with 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 2 of the oxygen enrichment chamber and the fuel tube 1, which avoids smoke leakage and ensures that the smoke rises within the furnace core, resulting in more complete combustion.

[0055] Furthermore, a plurality of oxygenation holes 8 are evenly distributed on the side wall of the inner cylinder 3 of the oxygenation chamber, and the oxygenation holes 8 are all located between the two sealing plates 5 .

[0056] It is convenient for the air between the inner cylinder 3 of the oxygenation chamber and the outer cylinder 2 of the oxygenation chamber to enter the inner cylinder 3 of the oxygenation chamber.

[0057] Furthermore, it also includes a feed chute 10. A feed port 11 is opened on the side wall of the support tube 4. The lower end of the feed chute 10 passes through the side wall of the fuel cylinder 1 and extends into the feed chute 10.

[0058] The biomass fuel can slide into the support core 9 through the feed chute 10, making it easy to add fuel.

[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. A furnace core with a replaceable oxygen enrichment tube, characterized in that: The invention comprises a fuel cylinder (1) and an oxygenation chamber outer cylinder (2), wherein the lower end of the oxygenation chamber outer cylinder (2) is butted against the upper end of the fuel cylinder (1), a support cylinder (4) is provided in the fuel cylinder (1), an oxygenation chamber inner cylinder (3) is provided in the oxygenation chamber outer cylinder (2), and the lower end of the oxygenation chamber inner cylinder (3) is in sealing contact with the upper end of the support cylinder (4); an annular sealing plate (5) is provided on the outer side of both ends of the oxygenation chamber inner cylinder (3), and the outer periphery of the sealing plate (5) is in sealing contact with the inner side wall of the oxygenation chamber outer cylinder (2).

2. The furnace core of the replaceable oxygen enrichment cartridge according to claim 1, characterized in that: A burner core (9) is also provided in the fuel cylinder (1), and the upper end of the burner core (9) is butted against the lower end of the support cylinder (4).

3. The furnace core of the replaceable oxygen enrichment cartridge according to claim 2, characterized in that: The lower end of the support tube (4) is embedded in the support core (9), and the support core (9) is a sand core.

4. The furnace core of the replaceable oxygen enrichment cartridge according to claim 2, characterized in that: The bottom of the fuel cylinder (1) is provided with a furnace bottom structure (12), and the lower end of the burner core (9) contacts the furnace bottom structure (12); the inner side wall of the support cylinder (4) is flush with the inner side wall of the burner core (9).

5. The furnace core of the replaceable oxygen enrichment cartridge according to claim 1, characterized in that: The upper end of the oxygenation chamber outer cylinder (2) is higher than the upper end of the oxygenation chamber inner cylinder (3) and the sealing plate (5).

6. The furnace core of the replaceable oxygen enrichment cartridge according to claim 1, characterized in that: An air distribution port (6) is provided on the side wall of the outer cylinder (2) of the oxygenation chamber, and an air distribution channel (7) is provided on the outer side wall of the outer cylinder (2) of the oxygenation chamber. The air distribution channel (7) is in sealed contact with the outer side wall of the outer cylinder (2) of the oxygenation chamber, and the air distribution channel (7) is connected to the air distribution port (6); the air distribution port (6) is located between the two sealing plates (5).

7. The furnace core of the replaceable oxygen enrichment cartridge according to claim 6, characterized in that: The outer wall of the oxygen enrichment chamber outer cylinder (2) is flush with the outer wall of the fuel cylinder (1), and the lower end of the air distribution channel (7) is arranged along the outer wall of the fuel cylinder (1).

8. The furnace core of the replaceable oxygen enrichment cartridge according to claim 7, characterized in that: The lower end of the oxygen enrichment chamber outer cylinder (2) is integrally connected to the upper end of the fuel cylinder (1).

9. The furnace core of the replaceable oxygen enrichment cartridge according to claim 1, characterized in that: A plurality of oxygenation holes (8) are evenly distributed on the side wall of the inner cylinder (3) of the oxygenation chamber, and the oxygenation holes (8) are all located between the two sealing plates (5).

10. The furnace core of the replaceable oxygen enrichment cartridge according to claim 1, characterized in that: It also includes a feed chute (10), a feed port (11) is provided on the side wall of the support cylinder (4), and the lower end of the feed chute (10) passes through the side wall of the fuel cylinder (1) and extends into the feed chute (10).

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