Stove

Abstract

The utility model relates to the technical field of stoves, and discloses a stove which comprises an outer stove body, an inner wall and a fire grate, the inner wall and the outer stove body are arranged at an interval to form an air inlet channel, and the inner wall defines a combustion chamber; an air inlet channel is formed between the outer wall and the inner wall, the outer furnace body is provided with a first air inlet, and the inner wall is provided with a second air inlet and a third air inlet; the blocking part on the inner wall can stop a part of air entering the air inlet channel around the third air inlet, and the part of air is sucked into the furnace through the third air inlet under the action of pressure difference. Unblocked air can flow upwards and is sucked into the furnace through the second air inlet. Therefore, fresh air is introduced into different-height areas of the combustion chamber through the second air inlet and the third air inlet, air distribution is achieved, layered air distribution is conducted on the different-height areas of the combustion chamber, the air inflow of the different-height areas of the combustion chamber is more balanced, fuel can be more sufficiently combusted in a layered mode, the combustion efficiency is improved, and the combustion efficiency is improved. And black smoke is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of stoves, and in particular to a stove. Background Art

[0002] In the related art, a combustion chamber is provided inside a stove, and fuel burns in the combustion chamber. As the combustion progresses, the high-temperature gas formed in the combustion chamber is discharged from the air outlet of the stove body, and external air enters the combustion chamber through the air inlet provided on the stove body to provide the oxygen required for continuous fuel combustion. However, during the combustion process, it is difficult for some areas in the combustion chamber to come into contact with fresh air, resulting in incomplete combustion of some fuels. This not only reduces the combustion efficiency but also generates black smoke, affecting the user experience. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present application provides a stove with balanced air intake.

[0004] The stove according to the embodiment of the present application includes an outer stove body, an inner wall, and a grate. The inner wall is spaced apart from the outer stove body to form an air intake passage, and the inner wall defines a combustion chamber;

[0005] The grate is installed in the combustion chamber for carrying combustible fuel, and the grate includes a plurality of holes, and the sizes of the plurality of holes are set to allow the ash from the combustible fuel to pass through;

[0006] The outer stove body is provided with a first air inlet, and the air intake passage is communicated with the outside through the first air inlet;

[0007] The inner wall is provided with a second air inlet and a third air inlet communicated with the air intake passage. The second air inlet is located at the upper part of the inner wall, the third air inlet is located between the grate and the second air inlet, and a flow blocking portion is further formed on the inner wall. The flow blocking portion is used to intercept part of the air flowing in the air intake passage to the second air inlet around the third air inlet.

[0008] The stove according to the embodiments of the present application has at least the following beneficial effects: When the stove is in use, the combustible fuel can be placed on the grate and burned in the combustion chamber. As the combustible fuel burns, high-temperature gas is generated in the combustion chamber and discharged outside the stove. The pressure difference between inside and outside the combustion chamber enables the external air entering the intake passage through the first intake port to pass through the second intake port. During this process, the flow blocking portion intercepts part of the gas flowing towards the second intake port around the third intake port in the intake passage. This part of the air is inhaled into the stove through the third intake port under the action of the pressure difference, and the air that is not intercepted can flow upward and be inhaled into the stove through the second intake port. Thus, the diversion of air is achieved, effectively increasing the intake volume of the third intake port and making the intake volumes of the second intake port and the third intake port more balanced. The third intake port is located between the second intake port and the grate, so as to introduce fresh air into different height regions of the combustion chamber together with the second intake port, realizing stratified air distribution for different height regions of the combustion chamber, which is beneficial to the more complete stratified combustion of the combustible fuel in the combustion chamber, can not only improve the combustion efficiency but also help reduce the generation of black smoke.

[0009] For the stove according to some embodiments of the present application, the inner wall includes a first inner wall and a second inner wall; wherein, the first inner wall is located above the grate, at least a part of the second inner wall is located below the first inner wall, and the second intake port is provided in the upper part of the first inner wall; the lower part of the first inner wall is located outside the second inner wall, and a flow blocking portion is provided between the lower part of the first inner wall and the upper part of the second inner wall to intercept part of the air below the flow blocking portion in the intake passage, and the third intake port communicates the lower space and the combustion chamber.

[0010] For the stove according to some embodiments of the present application, the first inner wall includes a first wall body and a first protrusion, the first protrusion is connected to the lower part of the first wall body and extends towards the combustion chamber, and the first protrusion surrounds the outer periphery of the second inner wall to form the flow blocking portion, and a third intake port is formed at an interval between the flow blocking portion and the second inner wall; alternatively, the second inner wall includes a second wall body and a second protrusion, the second protrusion is connected to the upper part of the second wall body and extends towards the direction away from the combustion chamber, and the second protrusion surrounds the outer periphery of the second wall body to form the flow blocking portion, and a third intake port is formed at an interval between the flow blocking portion and the lower part of the first wall body.

[0011] A stove according to some embodiments of the present application, wherein the first inner wall includes a first wall body and a first protrusion. The first protrusion is connected to the lower part of the first wall body and extends towards the combustion chamber. The first protrusion surrounds the outer periphery of the second inner wall to form the flow blocking portion. A third air inlet is formed at an interval between the flow blocking portion and the second inner wall. The second inner wall includes a second wall body and a second protrusion. The second protrusion is connected to the upper part of the second wall body and protrudes towards a direction away from the combustion chamber. The second protrusion is located above the flow blocking portion. Wherein: There is a gap between the second protrusion and the flow blocking portion to form an air passage, and the air passage communicates with the third air inlet. There is a gap between the second protrusion and the first wall body to form a fourth air inlet, and / or, the second protrusion is provided with a fourth air inlet. The fourth air inlet communicates with the air passage and the combustion chamber.

[0012] A stove according to some embodiments of the present application, wherein the flow blocking portion is connected between the lower part of the first wall body and the second wall body, and the flow blocking portion surrounds the outer periphery of the second wall body. The third air inlet is provided on the flow blocking portion and / or the upper part of the second wall body.

[0013] A stove according to some embodiments of the present application, wherein the inner wall includes an inner wall main body and the flow blocking portion. The flow blocking portion is connected to the outer periphery of the inner wall main body and extends towards the outer furnace body. One end of the flow blocking portion away from the inner wall main body is spaced from the outer furnace body. The third air inlet is provided on the inner wall main body, and the third air inlet is located below the flow blocking portion. For a stove according to some embodiments of the present application, the height of the upper end of the inner wall relative to the lowest position of the upper surface of the grate is H, and the height of the third air inlet relative to the lowest position of the upper surface of the grate is S. Wherein: 1 / 4*H ≤ S ≤ 2 / 3*H.

[0014] A stove according to some embodiments of the present application, wherein the outer furnace body includes an outer wall and a bottom wall. The outer wall defines an accommodation cavity. The inner wall is disposed in the accommodation cavity, and an air inlet passage is formed at an interval between the inner wall and the outer wall. The bottom wall is connected to the lower end of the outer wall. The grate is disposed at intervals on the upper end of the bottom wall. The first air inlet is provided on the outer wall and / or the bottom wall.

[0015] A stove according to some embodiments of the present application, wherein the stove further includes a support member and an ash pan. The ash pan is disposed above the bottom wall and below the plurality of holes of the grate. The support member supports between the grate and the ash pan so that a gas passage is formed at an interval between the grate and the ash pan.

[0016] A furnace according to some embodiments of the present application, wherein the outer wall includes a first outer wall and a second outer wall, the bottom wall is connected to the lower end of the second outer wall, the lower end of the first outer wall is connected to the upper end of the second outer wall, an abutting portion is provided at the lower end of the first outer wall, a supporting portion is provided at the upper end of the second outer wall, the outer wall further includes a lock, the lock includes a fixing portion and a movable portion, the fixing portion is connected to the first outer wall or the second outer wall, the movable portion is driven to be able to rotate relative to the fixing portion to switch between a locked state and an unlocked state, in the locked state, the movable portion clamps the abutting portion and the supporting portion between the movable portion and the fixing portion, and in the unlocked state, the movable portion releases the clamping of the abutting portion and the supporting portion.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic cross-sectional view of the furnace according to an embodiment of the present application, in which the air flow direction is indicated by a dashed arrow;

[0019] Figure 2 For Figure 1 Partial enlarged schematic view at A in

[0020] Figure 3 Schematic structural view of the inner wall provided with a flow blocking portion in another embodiment of the present application, in which the air flow direction is indicated by a dashed arrow;

[0021] Figure 4 Schematic structural view of the inner wall provided with a flow blocking portion in yet another embodiment of the present application, in which the air flow direction is indicated by a dashed arrow;

[0022] Figure 5 Schematic view of the inner wall provided with a flow blocking band structure in yet another embodiment of the present application, in which the air flow direction is indicated by a dashed arrow;

[0023] Figure 6 Exploded schematic view of a part of the structure of the furnace according to an embodiment of the present application, with a cross-section shown;

[0024] Figure 7 Schematic external structural view of the assembled furnace according to an embodiment of the present application;

[0025] Figure 8 For Figure 7 Exploded schematic view of the embodiment shown;

[0026] Figure 9 For Figure 8 Schematic structural view of the first component in

[0027] Figure 10 For Figure 8 the structural schematic diagrams of the second component, the latch, and the handle in

[0028] Figure 11 Some ways of forming the flow blocking portion and the third air inlet on the inner wall in the embodiments of the present application are schematically shown by the simplified diagrams;

[0029] Figure 12 Some other ways of forming the flow blocking portion and the third air inlet on the inner wall in the embodiments of the present application are schematically shown by the simplified diagrams.

[0030] Reference numerals:

[0031] Inner wall 10; Second air inlet 11; Third air inlet 12; Fourth air inlet 13; Air passage 14; Outer wall 20; First air inlet 21; Air inlet passage 30; Flow blocking portion 40; Flow blocking belt structure 41; Support step 70; Combustion chamber 80;

[0032] Outer furnace body 100; First component 110; First inner wall 111; First wall body 112; First convex portion 113; First outer wall 114; Abutting portion 115; Second component 120; Second outer wall 121; Support portion 122; Bottom wall 123; Connecting member 124;

[0033] Third component 200; Second inner wall 210; Second wall body 211; Second convex portion 212; Grate 230; Support member 240; Ash pan 250;

[0034] Latch 300; Fixed portion 310; Movable portion 320; Handle 330;

[0035] Flame concentrating ring 400; Baking net 500; Support foot seat 600. Detailed implementation manners

[0036] Hereinafter, the concept and the technical effects generated by the present application will be clearly and completely described in combination with the embodiments to fully understand the purpose, features, and effects of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0037] In the description of the embodiments of the present application, if orientation descriptions are involved, such as "upper", "lower", "front", "rear", "left", "right", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0038] In the description of the embodiments of the present application, if a feature is described as "arranged", "fixed", "connected", or "installed" on another feature, it can be directly arranged, fixed, connected, or installed on the other feature, or indirectly arranged, fixed, connected, or installed on the other feature. In the description of the embodiments of the present application, if "several" is involved, its meaning is more than one; if "multiple" is involved, its meaning is more than two; if "greater than", "less than", or "exceeding" is involved, it should be understood as not including the number itself; if "above", "below", or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, rather than indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0039] In related technologies, the fresh air entering from the bottom air inlet of the stove reacts with the bottom of the fuel. It is difficult for the middle and upper parts of the fuel to contact the fresh air, resulting in incomplete combustion of some fuel and low combustion efficiency. Moreover, the incomplete combustion of the fuel will also produce black smoke, affecting the use experience. In some other technologies, the stove body is provided with an air inlet channel inside and introduces fresh air into the upper part of the combustion chamber, which can promote the full combustion of the fuel to a certain extent. However, it is still difficult for the middle area in the combustion chamber to contact enough fresh air, and there are still problems of low combustion efficiency and black smoke. Therefore, the use experience is not ideal.

[0040] The embodiments of the present application provide a stove that can perform stratified air distribution in the combustion chamber, which is beneficial to the more complete stratified combustion of the fuel in the combustion chamber, can not only improve the combustion efficiency but also help reduce the generation of black smoke, and is beneficial to improving the use experience. The embodiments of the present application are introduced below with reference to the accompanying drawings of the specification:

[0041] Refer to Figure 1 and Figure 2 The stove of the embodiments of the present application includes an inner wall 10, an outer stove body 100, and a grate 230.

[0042] The inner wall 10 defines a combustion chamber 80, and a grate 230 is installed in the combustion chamber 80. For example, the grate 230 can be connected to the inner wall 10. The grate 230 is used to carry combustible fuel. Thus, the upper end of the inner wall 10 can surround the upper opening of the combustion chamber 80 for the combustion chamber 80 to discharge gas. During use, the combustible fuel can be placed on the grate 230 so as to burn in the combustion chamber 80.

[0043] The inner wall 10 and the outer furnace body 100 are spaced apart to form an intake passage 30. The outer furnace body 100 is provided with a first intake port 21. The intake passage 30 communicates with the outside through the first intake port 21. The first intake port 21 is used to introduce external air into the intake passage 30. The inner wall 10 is provided with a second intake port 11 and a third intake port 12 that communicate with the intake passage 30, and are used to introduce the air in the intake passage 30 into the combustion chamber 80.

[0044] As the combustible fuel burns, high-temperature gas is generated in the combustion chamber 80 and discharged outside the furnace. The pressure difference generated inside and outside the combustion chamber 80 enables the external air entering the intake passage 30 through the first intake port 21 to be inhaled into the furnace through the second intake port 11 and the third intake port 12.

[0045] In the embodiment of the present application, the second intake port 11 is located in the upper part of the inner wall 10, and the third intake port 12 is located between the grate 230 and the second intake port 11. Thus, fresh air can be introduced into areas at different heights in the combustion chamber 80. The second intake port 11 and the third intake port 12 can be configured to surround the combustion chamber 80, so as to intake air evenly into the combustion chamber 80 from the surroundings.

[0046] Among them, a flow blocking portion 40 is further formed on the inner wall 10. The flow blocking portion 40 is used to intercept part of the air flowing in the intake passage 30 towards the second intake port 11 around the third intake port 12. During the intake process, the flow blocking portion 40 can intercept part of the air flowing towards the second intake port 11 in the intake passage 30 around the third intake port 12. This part of the air is inhaled into the furnace through the third intake port 12 under the action of the pressure difference. The unblocked air can flow upward and be inhaled into the furnace through the second intake port 11. The diversion of air is realized, effectively increasing the intake air volume of the third intake port 12, making the intake air volumes of the second intake port 11 and the third intake port 12 more balanced, realizing stratified air distribution in areas at different heights of the combustion chamber 80, which is beneficial to the more complete stratified combustion of the combustible fuel in the combustion chamber 80, can not only improve the combustion efficiency, but also is beneficial to reducing the generation of black smoke.

[0047] Specifically, the inner wall 10 and the outer wall 20 may be cylindrical structures. The second air inlet 11 may be located in the upper half of the inner wall 10. For example, the second air inlet 11 may be provided near the upper end of the inner wall 10. The second air inlet 11 is closer to the upper end of the inner wall 10 than the third air inlet 12 to introduce fresh air into the upper region of the combustion chamber 80. The third air inlet 12 may be located in the middle of the inner wall 10, and may be at the exact middle or at a position within a set height range that is slightly above or below the exact middle. For example, the height of the upper end of the inner wall 10 relative to the lowest position of the upper surface of the grate 230 is H, which can also be understood as the depth of the combustion chamber 80. The height of the third air inlet 12 relative to the lowest position of the upper surface of the grate 230 is S, and 1 / 4*H ≤ S ≤ 2 / 3*H. That is to say, the third air inlet 12 may be set within the range of 1 / 4H to 2 / 3H from the lowest position of the upper surface of the grate 230, specifically, it may be 1 / 4H, 1 / 3H, 1 / 2H, 2 / 3H or any other position within the range of 1 / 4H to 2 / 3H. Thus, the third air inlet 12 can introduce fresh air into the middle region of the combustion chamber 80. The second air inlet 11 and the third air inlet 12 balance the air intake in the upper and middle parts of the combustion chamber 80, enabling the combustible fuel to burn in a more fully stratified manner. In some embodiments, the inner wall 10 and the outer wall 20 may also be structures such as quadrilateral cylinders, pentagonal cylinders, conical cylinders, etc.

[0048] In addition, the air entering the upper region of the combustion chamber 80 from the second air inlet 11 can not only assist combustion but also suppress the upward ejection of the flame during combustion, causing the flame to converge towards the central opening of the upper end of the combustion chamber 80 as much as possible, minimizing heat loss in the furnace and improving the combustion efficiency.

[0049] The inner wall 10 may be an integral structure or a split structure. The integral structure may be an integral structure formed by an integral molding process or an integral structure connected by welding. The split structure refers to a split structure composed of at least two parts through methods such as lapping and detachable connection.

[0050] Reference Figures 1 to 4, in some embodiments, the inner wall 10 includes a first inner wall 111 and a second inner wall 210. The first inner wall 111 is located above the grate 230, at least a part of the second inner wall 210 is located below the first inner wall 111, and the lower part of the first inner wall 111 is located outside the second inner wall 210. Specifically, the upper part of the second inner wall 210 and the lower part of the first inner wall 111 may be at the same distance from the grate 230 and be flush with each other. Alternatively, the height of the upper part of the second inner wall 210 relative to the grate 230 is higher than that of the lower part of the first inner wall 111, and the upper part of the second inner wall 210 and the lower part of the first inner wall 111 may partially overlap in the horizontal direction. A flow blocking portion 40 is provided between the lower part of the first inner wall 111 and the upper part of the second inner wall 210 to intercept part of the air in the air inlet passage 30 in the space below the flow blocking portion 40. The third air inlet 12 communicates with the space below the flow blocking portion 40 and the combustion chamber 80, so that the air in the cavity intercepted in the space below the flow blocking portion 40 can be introduced into the furnace under the action of the pressure difference between the combustion chamber 80 and the air inlet passage 30, and air is input into the middle part of the combustion chamber 80.

[0051] Referring to Figure 3 and Figure 11 FIG. a in, in some embodiments, the first inner wall 111 includes a first wall body 112 and a first convex portion 113. The first convex portion 113 is connected to the lower part of the first wall body 112 and extends towards the combustion chamber 80. The first convex portion 113 surrounds the outer periphery of the second inner wall 210 to form the flow blocking portion 40. Therefore, part of the air flowing in the air inlet passage 30 towards the second air inlet 11 can be intercepted by the flow blocking portion 40 formed by the first convex portion 113 in the space below the flow blocking portion 40. The upper part of the second inner wall 210 may be flush with the first convex portion 113, or the height of the upper part of the second inner wall 210 relative to the grate 230 is higher than the height of the first convex portion 113 relative to the grate 230. A third air inlet 12 is formed at an interval between the flow blocking portion 40 and the second inner wall 210. That is to say, the gap formed by the interval between the flow blocking portion 40 and the outer side surface of the second inner wall 210 is the third air inlet 12. Compared with the scheme of opening holes in the wall body, forming the third air inlet 12 by separating the gap can eliminate the need for additional machining of through holes, simplify the machining of parts, and the third air inlet 12 forms a continuous structure surrounding the combustion chamber 80, making the air intake smoother and more uniform. Therefore, the third air inlet 12 surrounds the outer periphery of the second inner wall 210 and communicates with the space below the flow blocking portion 40 and the combustion chamber 80, and can introduce the air intercepted in the space below the flow blocking portion 40 into the combustion chamber 80 to form an air intake airflow surrounding the combustion chamber 80, so as to uniformly intake air into the middle region of the combustion chamber 80.

[0052] Further, referring to Figure 11In FIG. b, the second inner wall 210 may include a second wall body 211 and a second protrusion 212. The grate 230 may be connected to the lower part of the second wall body 211. The second protrusion 212 is connected to the upper part of the second wall body 211 and extends in a direction away from the combustion chamber 80. The second protrusion 212 is located above the flow blocking portion 40 formed by the first protrusion 113. The second protrusion 212 may abut above the flow blocking portion 40. A first through hole may be provided in the flow blocking portion 40, and a second through hole may be provided in the second protrusion 212. The first through hole and the second through hole are aligned to form a third air inlet 12 communicating with the space below the flow blocking portion 40 and the combustion chamber 80.

[0053] Alternatively, referring to Figure 2 and Figure 11 In FIG. c, a gap may be provided between the second protrusion 212 and the flow blocking portion 40 to form an air passage 14. The air passage 14 communicates with the third air inlet 12. A gap is provided between the second protrusion 212 and the first wall body 112 to form a fourth air inlet 13. Thus, the fourth air inlet 13 communicates with the air passage 14 and the combustion chamber 80. Alternatively, a through hole may also be provided in the second protrusion 212, and the through hole communicates with the air passage 14 and the combustion chamber 80 to form a fourth air inlet 13. Alternatively, a gap communicating with the air passage 14 and the combustion chamber 80 is provided between the second protrusion 212 and the first wall body 112, and a through hole communicating with the air passage 14 and the combustion chamber 80 is provided in the second protrusion 212. The gap and the through hole may form a fourth air inlet 13 communicating with the air passage 14 and the combustion chamber 80. Therefore, the air below the flow blocking portion 40 can enter the air passage 14 from the third air inlet 12 and then enter the combustion chamber 80 through the fourth air inlet 13.

[0054] Wherein, a plurality of support portions may be provided between the second protrusion 212 and the first protrusion 113. The plurality of support portions are circumferentially distributed and can provide uniform supporting force for the second protrusion 212. The support portions are spaced from each other. Thus, an air passage 14 is defined between the second protrusion 212, the first protrusion 113 and adjacent support portions. The support portions can support the second protrusion 212 above the first protrusion 113. Thus, the second inner wall 210 can be installed on the first inner wall 111 in such a way that the second protrusion 212 abuts above the first protrusion 113 through the support portion 122.

[0055] In some embodiments, a support frame may be provided inside the outer furnace body 100. The support frame is fixedly connected to the outer furnace body 100. The lower part of the second wall body 211 is supported by the support frame, so that the second protrusion 212 is spaced above the first protrusion 113. At the same time, the support frame can also horizontally limit the second wall body 211, so as to keep the distance between the second wall body 211 and the outer furnace body 100 unchanged.

[0056] In some embodiments, referring toFigure 11 In FIG. d, through holes may also be provided in the second wall body 211. The through holes are located below the flow blocking portion 40, forming a third air inlet 12 that communicates the space below the flow blocking portion 40 and the combustion chamber 80.

[0057] In addition to the above embodiments, the flow blocking portion 40 and the third air inlet 12 of the embodiments of the present application may also be arranged in other ways. For example:

[0058] In some embodiments, referring to Figure 12 FIG. a, the second inner wall 210 includes a second wall body 211 and a second convex portion 212. The grate 230 may be connected to the lower part of the second wall body 211. The second convex portion 212 is connected to the upper part of the second wall body 211 and extends in a direction away from the combustion chamber 80. The second convex portion 212 surrounds the outer periphery of the second wall body 211 to form the flow blocking portion 40. Therefore, part of the air flowing in the air inlet passage 30 towards the second air inlet 11 can be intercepted by the flow blocking portion 40 formed by the second convex portion 212 in the space below the flow blocking portion 40. The lower part of the first inner wall 111 may be flush with the second convex portion 212, or the height of the lower part of the first inner wall 111 relative to the grate 230 is lower than the height of the second convex portion 212 relative to the grate 230. A third air inlet 12 is formed at an interval between the flow blocking portion 40 and the lower part of the first inner wall 111. That is to say, the gap formed by the interval between the flow blocking portion 40 and the inner side surface of the first inner wall 111 is the third air inlet 12. Therefore, the third air inlet 12 surrounds the outer periphery of the first wall body 112 and the inner side of the first inner wall 111, so that the third air inlet 12 communicates with the space below the flow blocking portion 40 and the combustion chamber 80, and the air intercepted in the space below the flow blocking portion 40 can be introduced into the combustion chamber 80 to form an intake air flow surrounding the combustion chamber 80, so as to evenly intake air into the middle area of the combustion chamber 80.

[0059] Or, referring to Figure 4 and Figure 12In FIG. b, in some embodiments, the inner wall 10 includes a first wall body 112, a second wall body 211, and a flow blocking portion 40. The first wall body 112 is located above the grate 230, and a second air inlet 11 is provided on the first wall body 112. The distance from the upper part of the second inner wall 210 and the lower part of the first inner wall 111 to the grate 230 can be equal, and the two are flush with each other. Or, the height of the upper part of the second inner wall 210 relative to the grate 230 is higher than that of the lower part of the first inner wall 111. The upper part of the second inner wall 210 and the lower part of the first inner wall 111 can partially overlap in the horizontal direction, so that at least a part of the second wall body 211 is located below the first wall body 112, and the lower part of the first wall body 112 is located outside the second wall body 211. The flow blocking portion 40 is connected between the lower part of the first wall body 112 and the second wall body 211, and the flow blocking portion 40 surrounds the outer periphery of the second wall body 211. The first wall body 112, the second wall body 211, and the flow blocking portion 40 can be formed into an integral structure by an integral molding process, or can be connected by common connection methods such as welding, riveting, clamping, etc., so as to connect the first wall body 112, the second wall body 211, and the flow blocking portion 40 to form a whole. The air flowing in the air inlet passage 30 to the second air inlet 11 can be partially intercepted by the flow blocking portion 40 in the space below the flow blocking portion 40.

[0060] Reference Figure 12 In FIG. b, the flow blocking portion 40 may be provided with a third air inlet 12, or the upper part of the second wall body 211 is provided with a third air inlet 12, or the flow blocking portion 40 and the upper part of the second wall body 211 are respectively provided with a third air inlet 12, so that the third air inlet 12 communicates with the space below the flow blocking portion 40 and the combustion chamber 80, and the air intercepted in the space below the flow blocking portion 40 can be introduced into the combustion chamber 80. Among them, the third air inlet 12 may include a plurality of through holes distributed in a circumferential manner around the combustion chamber 80. Therefore, the third air inlet 12 can form an intake air flow surrounding the combustion chamber 80, so as to evenly intake air into the middle region of the combustion chamber 80.

[0061] Or, reference Figure 5 and Figure 12In Figure C thereof, in some embodiments, the inner wall 10 includes an inner wall main body and a flow blocking portion 40. The flow blocking portion 40 is connected to the outer periphery of the inner wall main body and extends toward the outer furnace body 100, forming a flow blocking belt structure 41 surrounding the outer periphery of the inner wall main body, which can intercept part of the flowing air below the flow blocking portion 40. One end of the flow blocking portion 40 away from the inner wall main body is spaced apart from the outer furnace body 100, so there is a gap between the flow blocking portion 40 and the outer furnace body 100. Thus, part of the air flowing in the air inlet passage 30 toward the second air inlet 11 is intercepted by the flow blocking portion 40 in the space below the flow blocking portion 40, and the part of the air not intercepted flows toward the second air inlet 11 through the gap between the flow blocking portion 40 and the outer furnace body 100. A third air inlet 12 is provided on the inner wall main body, and the third air inlet 12 is located below the flow blocking portion 40. Thus, the third air inlet 12 communicates with the space below the flow blocking portion 40 and the combustion chamber 80, and can introduce the air intercepted in the space below the flow blocking portion 40 into the combustion chamber 80. Among them, the third air inlet 12 may include a plurality of through holes distributed in a circumferential manner around the combustion chamber 80. Therefore, the third air inlet 12 can form an intake air flow surrounding the combustion chamber 80, so as to evenly supply air to the middle area of the combustion chamber 80.

[0062] It can be understood that in the solution of forming the flow blocking portion 40 between the lower part of the first inner wall 111 and the upper part of the second inner wall 210 introduced above, it is also suitable to provide the flow blocking belt structure 41. The flow blocking belt structure 41 can be provided on the outer periphery of the first inner wall 111 and extend toward the outer furnace body 100. The flow blocking belt structure 41 is located above the flow blocking portion 40. Thus, the air not intercepted and retained by the flow blocking portion 40 can also be intercepted by the flow blocking belt structure 41, further increasing the air retained around the third air inlet 12, which is beneficial to increasing the intake air volume of the third air inlet 12.

[0063] Reference Figure 1 , in some embodiments, the outer furnace body 100 may include an outer wall 20 and a bottom wall 123. The outer wall 20 defines an accommodation cavity, the inner wall 10 is located in the accommodation cavity, and an air inlet passage 30 is formed at an interval between the outer wall 20 and the inner wall 10. The upper end of the inner wall 10 can be connected to the outer wall 20 to close the upper end of the air inlet passage 30. Processes such as curling or circumferential full welding of the upper end of the inner wall 10 can be used for sealing connection to the outer wall 20. Thus, the upper end of the inner wall 10 can form the upper end opening of the combustion chamber 80 for the combustion chamber 80 to discharge gas.

[0064] The bottom wall 123 is connected to the lower end of the outer wall 20. The bottom wall 123 and the outer wall 20 can be an integral structure formed by integral molding, or the bottom wall 123 and the outer wall 20 can also be a split structure in which two structural members are connected by fixed connection or detachable connection. The grate 230 is disposed above the bottom wall 123 at intervals. The outer wall 20 and / or the bottom wall 123 is provided with a first air inlet 21. Thus, outside air can enter the interior of the outer furnace body 100 through the first air inlet 21. Part of the air can enter the air inlet passage 30, and part of the air can enter below the grate 230. The grate 230 can include a plurality of holes for fresh air entering the gas passage from the first air inlet 21 to enter the combustion chamber 80 from the bottom.

[0065] During the combustion process, after the fresh air enters the outer furnace body 100, a part of it enters the bottom of the combustion chamber 80 through the plurality of holes of the grate 230, and a part enters the air inlet passage 30 between the outer wall 20 and the inner wall 10. Then, a part of the air stays around the third air inlet 12 due to the blockage of the flow blocking portion 40 and enters the combustion chamber 80 through the third air inlet 12. The unblocked part of the air flows upward to the top of the air inlet passage 30 and then turns back to enter the combustion chamber 80 through the second air inlet 11. Thus, the fresh air can be introduced into the bottom, middle, and upper parts of the combustion chamber 80 respectively, realizing three-way air intake in the combustion chamber 80, improving the air intake balance in each area inside the combustion chamber 80, facilitating the full combustion of the combustible fuel, and improving the efficiency and reducing black smoke.

[0066] The sizes of the plurality of holes on the grate 230 are set to allow the ash from the combustible fuel to pass through. The ash formed after the full combustion of the combustible fuel can also leave the combustion chamber 80 through the plurality of holes of the grate 230 and fall outside the combustion chamber 80, effectively avoiding the accumulation of ash from affecting the contact between the bottom of the combustible fuel and the air and contributing to the full combustion of the combustible fuel.

[0067] In the furnace of the embodiment of the present application, the outer wall 20, the inner wall 10, and the grate 230 can be formed in various ways, including but not limited to the following embodiments:

[0068] In some embodiments, the outer wall 20, the inner wall 10, and the grate 230 can be an integral structure. For example, the outer wall 20, the inner wall 10, and the grate 230 are formed into an integral structure by integral molding technology, or formed into an integral structure by welding; or the outer wall 20, the inner wall 10, and the grate 230 are a split structure and are connected by means such as lapping and detachable connection.

[0069] In other embodiments, some structures of the outer wall 20, the inner wall 10, and the grate 230 are integral structures, and some are split structures. For example:

[0070] The outer wall 20 and the inner wall 10 can be an integral structure, while the grate 230 and the inner wall 10 are a split structure. Or, the inner wall 10 and the grate 230 are an integral structure, while the outer wall 20 and the inner wall 10 are a split structure;

[0071] Or, the outer wall 20 can be divided into a first outer wall 114 and a second outer wall 121 arranged up and down, and the inner wall 10 can be divided into a first inner wall 111 and a second inner wall 210 arranged up and down. The upper first outer wall 114 and the first inner wall 111 can be an integral structure. The second outer wall 121 is located below the first outer wall 114 and is a split structure with the first outer wall 114. The second inner wall 210 is located below the first inner wall 111 and is a split structure with the first inner wall 111. The grate 230 and the second inner wall 210 are an integral structure or a split structure.

[0072] Reference Figure 6 , in some embodiments, the upper end of the first inner wall 111 is connected to the first outer wall 114. The first inner wall 111 and the first outer wall 114 can be formed into an integral structure by an integral molding process, or can also be a split structure connected by common connection means. The stove further includes at least two connecting members 124. The connecting members 124 are connected between the first outer wall 114 and the first inner wall 111, which can improve the structural stability of the first inner wall 111 and reduce the probability of deformation of the first inner wall 111.

[0073] Reference Figure 5 and Figure 6 , in some embodiments, a support member 240 is connected to the bottom of the grate 230. The support member 240 is supported between the bottom wall 123 and the grate 230, thereby forming an overhead space below the grate 230, facilitating the entry of external fresh air into the combustion chamber 80 through the ventilation holes of the grate 230, and facilitating the fall of the ashes in the combustion chamber 80.

[0074] Reference Figure 5 and Figure 6 , in some embodiments, the grate 230 is connected to the lower part of the second inner wall 210. The support member 240 supporting the grate 230 can support the grate 230 and the second inner wall 210 in the outer furnace body 100, maintaining the position stability of the grate 230 and the second inner wall 210. The second inner wall 210 does not need to be connected to the first inner wall 111 or the outer furnace body 100 by other means, which can simplify the structure and assembly.

[0075] Reference Figure 5 and Figure 6, in some embodiments, the stove may further include an ash pan 250. The ash pan 250 is disposed above the bottom wall 123 and below the plurality of holes of the grate 230. The ash pan 250 can be placed on the bottom wall 123 and is used to receive the ashes of the combustible fuel that fall from the air vents of the grate 230. The support member 240 is supported between the grate 230 and the ash pan 250, so that a gas channel is formed at an interval between the grate 230 and the ash pan 250, allowing external fresh air to enter below the grate 230 and into the combustion chamber 80, and facilitating the ash in the combustion chamber 80 to fall into the ash pan 250.

[0076] The grate 230, the support member 240, and the ash pan 250 can be connected and formed into one body by processes such as welding or riveting, which can prevent shaking between the grate 230, the support member 240, and the ash pan 250, ensure the effective support of the support member 240 between them, and thus ensure the smooth intake of air by the grate 230.

[0077] Reference Figures 6 to 9 , in the stove of some embodiments, the upper end of the first inner wall 111 is connected to the first outer wall 114 to form a first assembly 110. The first inner wall 111 and the first outer wall 114 can be formed into an integral structure by an integral molding process, or can also be a split structure connected by common connection methods.

[0078] Reference Figures 6 to 10 , the lower end of the second outer wall 121 is connected to the bottom wall 123 to form a second assembly 120. The second outer wall 121 and the bottom wall 123 can be formed into an integral structure by an integral molding process, or can also be a split structure connected by common connection methods.

[0079] Among them, the first outer wall 114 and the second outer wall 121 can be assembled in a detachable manner to realize the assembly of the above-mentioned first assembly 110 and second assembly 120. Among them, the lower end of the first outer wall 114 is provided with an abutting portion 115, and the upper end of the second outer wall 121 is provided with a supporting portion 122. The abutting portion 115 abuts above the supporting portion 122. Thus, during use, it is convenient for the first outer wall 114 to abut above the second outer wall 121, and it is also convenient to disassemble when assembling and storing the first assembly 110 and the second assembly 120. The first outer wall 114 and the second outer wall 121 can be concentric cylindrical structures, and they can be circumferentially limited to each other after assembly.

[0080] Wherein, one of the abutting portion 115 and the supporting portion 122 is an annular groove, and the other is an annular flange. During assembly, the annular flange is snap-fitted into the annular groove to achieve the assembly of the first component and the second component. Alternatively, both the abutting portion 115 and the supporting portion 122 can be annular flanges protruding outward. The abutting portion 115 is disposed above the lower end of the first outer wall 114, and the supporting portion 122 can be formed by processes such as flanging, curling, stamping, etc. During assembly, the lower end of the first outer wall 114 is placed inside the second outer wall 121, and the second outer wall 121 can circumferentially limit the lower end of the first outer wall 114, and the abutting portion 115 abuts against the supporting portion 122 to achieve lapping.

[0081] Reference Figures 6 to 10 , in some embodiments, the stove further includes a lock 300. The lock 300 includes a fixed portion 310 and a movable portion 320. The fixed portion 310 is connected to the first outer wall 114 or the second outer wall 121. The movable portion 320 can be driven to rotate relative to the fixed portion 310 to switch between a locked state and an unlocked state. The abutting portion 115 and the supporting portion 122 protrude outward. When the lock 300 is in the locked state, the movable portion 320 clamps the abutting portion 115 and the supporting portion 122 between the movable portion 320 and the fixed portion 310 to fix the first component and the second component; when the lock 300 is in the unlocked state, the movable portion 320 releases the abutment on the abutting portion 115 and the supporting portion 122. At this time, the first outer wall 114 or the second outer wall 121 is lapped, and the first component 110 and the second component 120 can be easily separated, which is convenient for installation and disassembly.

[0082] Reference Figure 7 and Figure 10 , in some embodiments, the stove may further include a handle 330. The handle 330 can be connected to the outer wall 20 or connected to the lock 300. The handle 330 can facilitate the handling and carrying of the stove to achieve a portable stove.

[0083] In some embodiments, the stove may further include support feet 600. The support feet 600 are uniformly arranged along the circumference below the furnace body. Specifically, they can be connected to the base of the second component by means such as welding, riveting, and bolt connection. The furnace body can be supported on installation surfaces such as the ground and the tabletop, avoiding direct contact between the furnace body and the installation surface, thereby preventing the heat of the furnace body from directly conducting to the installation surface during combustion and improving safety. The support feet 600 are rotatably connected to the base, so that the support feet 600 have a deployed state and a stored state relative to the stove. When the support feet 600 are in the deployed state, the stove is supported on the bottom surface, tabletop, etc. by the support feet 600. When the support feet 600 are in the stored state, the support feet 600 rotate and fold towards the base, thus saving storage space.

[0084] Reference Figure 8 and Figure 9In some embodiments, a support step 70 may be connected between the upper end of the inner wall 10 and the outer wall 20, and the upper end of the outer wall 20 may protrude upward from the upper surface of the support step 70, so that the outer peripheral side of the support step 70 may be circumferentially limited, and the support step 70 may be used to place other accessories of the stove, and the accessories may be placed according to the function. For example, in some embodiments, the stove may further include a fire gathering ring 400, which is placed above the support step 70, thereby playing a flame guiding role at the upper end opening of the combustion chamber 80, so that the flame is gathered but not dispersed. Alternatively, the stove may further include a grill 500, which may be placed above the support step 70 when necessary.

[0085] As an example: Reference Figure 1 , Figures 6 to 8 The first inner wall 111 and the first outer wall 114 are connected to form a first component 110, the second outer wall 121 and the bottom wall 123 are connected to form a second component 120, and the second inner wall 210, the grate 230, the support member 240 and the ash tray 250 are connected to form a third component 200. Among them, the first inner wall 111, the first outer wall 114, and the second outer wall 121 are concentrically arranged cylindrical structures, the ash tray 250 is placed on the base of the second component, and the grate 230 of the inner shell is supported above the ash tray 250 by the support member 240. The grate 230 supports the second inner wall 210 so that the second protrusion 212 of the second inner wall 210 is higher than the first protrusion 113 of the first inner wall 111, so that there is a gap between the second protrusion 212 and the first protrusion 113, and the gap forms the third air inlet 12 of the combustion chamber 80. The first inner wall 111 is provided with a second air inlet 11, and the second outer wall 121 is provided with a first air inlet 21. The first outer wall 114 is overlapped on the support portion 122 of the second outer wall 121 through the abutment portion 115. The stove further includes accessories such as a lock 300, a fire gathering ring 400 and / or a grill 500. The abutment portion 115 of the first outer wall 114 and the support portion 122 of the second outer wall 121 are locked by the lock 300. A handle 330 may also be provided on the lock 300 to facilitate carrying the stove. A support step 70 is provided at the top of the first inner wall 111, and accessories may be placed on the support step 70 according to use needs.

[0086] In the installation of this example, the second component 120 can be placed on a flat surface, and then the first component is installed on its upper end. When the abutting portion 115 of the first component 110 abuts against the supporting portion 122 of the second component 120, the lower end of the first outer wall 114 is limited to the inner circumferential side of the second outer wall 121. Operate the movable part of the buckle 300 upward to make the movable part clamp the upper end of the abutting portion 115 of the first component, so that the abutting portion 115 and the supporting portion 122 are clamped, realizing the assembly of the first component 110 and the second component 120. Next, the third component 200 can be placed in the second component 120, and the ash pan 250 is placed on the bottom wall 123 of the second component 120, that is, the assembly of the combustion chamber 80 is realized. Wherein, a flow blocking portion 40 is formed between the first inner wall 111 of the first component 110 and the second inner wall 210 of the third component 200, and a gap therebetween forms a third air inlet 12. One end of the third air inlet 12 communicates with the air inlet passage 30, and the other end communicates with the combustion chamber 80, for providing fresh air for the middle region of the combustion chamber 80.

[0087] During use, combustible fuel is placed in the combustion chamber 80 and ignited. The fire concentrating ring 400 or the grill 500 can be placed on the supporting step 70 at the upper end of the first inner wall 111 according to requirements. When the ashes need to be cleaned, there is no need to disassemble the first component and the second component. Just take out the inner shell and pour out the ashes, which is convenient to operate. During the combustion process, external fresh air continuously enters from the first air inlet 21 around the second component. A part of the fresh air enters the combustion chamber 80 through the air vent of the grate 230 at the bottom of the combustion chamber 80, and a part enters the gas passage between the outer wall 20 and the inner wall 10 of the furnace body, and enters the combustion chamber 80 through the second air inlet 11 and the third air inlet 12, effectively balancing the air intake in the lower, middle and upper regions of the combustion chamber 80, realizing the sub-region and stratified air distribution of the combustion chamber 80, helping the combustible fuel to burn more fully, thereby improving the combustion efficiency, reducing the generation of black smoke and improving the use experience.

[0088] The embodiments of the present application have been described in detail above with reference to the drawings. However, the present application is not limited to the above embodiments. Various changes can be made without departing from the purpose of the present application within the knowledge scope of those of ordinary skill in the art. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A stove, characterized in that It comprises an outer furnace body, an inner wall and a grate, wherein the inner wall is spaced apart from the outer furnace body to form an air intake passage, and the inner wall defines a combustion chamber; The grate is installed in the combustion chamber for carrying combustible fuel, and the grate includes a plurality of holes, the size of the plurality of holes is set to allow ash from the combustible fuel to pass through; The outer furnace body is provided with a first air inlet, and the air inlet passage is connected with the outside through the first air inlet; The inner wall is provided with a second air inlet and a third air inlet connected to the air inlet channel, the second air inlet is located at the upper part of the inner wall, the third air inlet is located between the grate and the second air inlet, and a flow blocking portion is also formed on the inner wall, the flow blocking portion is used to intercept part of the air flowing from the air inlet channel to the second air inlet around the third air inlet.

2. The stove according to claim 1, characterized in that The inner wall comprises a first inner wall and a second inner wall; The first inner wall is located above the grate, at least a portion of the second inner wall is located below the first inner wall, and the second air inlet is provided at the upper portion of the first inner wall; The lower portion of the first inner wall is located on the outer side of the second inner wall, and the baffle is arranged between the lower portion of the first inner wall and the upper portion of the second inner wall to intercept part of the air in the space below the baffle in the intake passage, and the third air intake port connects the space below and the combustion chamber.

3. The stove according to claim 2, characterized in that The first inner wall includes a first wall body and a first protrusion, the first protrusion is connected to the lower part of the first wall body and extends toward the combustion chamber, the first protrusion surrounds the outer periphery of the second inner wall to form the flow blocking portion, and the third air inlet is formed between the flow blocking portion and the second inner wall; or The second inner wall includes a second wall body and a second protrusion, the second protrusion is connected to the upper part of the second wall body and extends in a direction away from the combustion chamber, the second protrusion surrounds the outer periphery of the second wall body to form the flow blocking part, and the third air inlet is formed between the flow blocking part and the lower part of the first inner wall.

4. The stove according to claim 2, characterized in that The first inner wall includes a first wall body and a first protrusion, the first protrusion is connected to the lower part of the first wall body and extends toward the combustion chamber, the first protrusion surrounds the outer periphery of the second inner wall to form the flow blocking part, the flow blocking part and the second inner wall are spaced to form the third air inlet, the second inner wall includes a second wall body and a second protrusion, the second protrusion is connected to the upper part of the second wall body and protrudes in a direction away from the combustion chamber, and the second protrusion is located above the flow blocking part, wherein: There is a gap between the second protrusion and the flow blocking portion to form an air passage, and the air passage is connected to the third air inlet; There is a gap between the second protrusion and the first wall to form a fourth air inlet, and / or the second protrusion is provided with a fourth air inlet; the fourth air inlet communicates with the air duct and the combustion chamber.

5. The stove according to claim 1, characterized in that The inner wall includes a first wall body, a second wall body and the flow blocking portion, the first wall body is located above the grate, the first wall body is provided with the second air inlet, at least a portion of the second wall body is located below the first wall body, and the lower part of the first wall body is located on the outer side of the second wall body; the flow blocking portion is connected between the lower part of the first wall body and the second wall body, and the flow blocking portion surrounds the outer periphery of the second wall body, and the third air inlet is provided on the upper part of the flow blocking portion and / or the second wall body.

6. The stove according to claim 1, characterized in that The inner wall includes an inner wall body and the flow blocking portion, the flow blocking portion is connected to the outer periphery of the inner wall body and extends toward the outer furnace body, and one end of the flow blocking portion away from the inner wall body is spaced apart from the outer furnace body, the inner wall body is provided with the third air inlet, and the third air inlet is located below the flow blocking portion.

7. The stove according to claim 1, characterized in that The height of the upper end of the inner wall relative to the lowest position of the upper surface of the grate is H, and the height of the third air inlet relative to the lowest position of the upper surface of the grate is S, wherein: 1 / 4*H≤S≤2 / 3*H.

8. The stove according to claim 1, characterized in that The outer furnace body includes an outer wall and a bottom wall, the outer wall defines a accommodating cavity, the inner wall is arranged in the accommodating cavity, and is spaced apart from the outer wall to form the air inlet channel, the bottom wall is connected to the lower end of the outer wall, the grate is spaced apart above the bottom wall, and the outer wall and / or the bottom wall are provided with the first air inlet.

9. The stove according to claim 8, characterized in that The stove also includes a support member and an ash pan, wherein the ash pan is disposed above the bottom wall and below the plurality of holes of the grate, and the support member is supported between the grate and the ash pan to form a gas passage between the grate and the ash pan.

10. The stove according to claim 8, characterized in that The outer wall includes a first outer wall and a second outer wall, the bottom wall is connected to the lower end of the second outer wall, the lower end of the first outer wall is connected to the upper end of the second outer wall, the lower end of the first outer wall is provided with an abutment portion, and the upper end of the second outer wall is provided with a support portion, the outer wall also includes a lock, the lock includes a fixed portion and a movable portion, the fixed portion is connected to the first outer wall or the second outer wall, the movable portion is driven to rotate relative to the fixed portion to switch between a locked state and an unlocked state, in the locked state, the movable portion clamps the abutment portion and the support portion between the movable portion and the fixed portion, and in the unlocked state, the movable portion releases the clamping of the abutment portion and the support portion.

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