Combustor and stove

Abstract

The utility model provides a burner and a stove, and relates to the technical field of kitchen equipment. The combustor comprises a base, an outer ring injection pipe and a flow guide structure, the base comprises an outer ring gas mixing cavity, the outer ring injection pipe comprises an outer ring gas outlet section, and the outer ring gas outlet section is connected with the base and communicates with the outer ring gas mixing cavity. In the gas flowing direction, the outer ring gas outlet section is internally provided with a front end area close to a gas inlet of the outer ring injection pipe and a rear end area away from the gas inlet of the outer ring injection pipe, and the flow guide structure is arranged in the front end area and fixed to the inner wall of the outer ring gas outlet section, so that gas flow can be guided to the periphery of the flow guide structure; the flow guide structure is arranged in the front end area, airflow in the front end area with less airflow is increased, airflow in the outer ring injection pipe is more uniform, the flow guide structure is used for guiding gas in the outer ring injection pipe into the outer ring gas mixing cavity from the front end area, mixing of the gas in the outer ring gas mixing cavity is better facilitated, and the combustion efficiency of the combustor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen equipment, and particularly relates to a burner and a cooking stove. Background Art

[0002] At present, burners with integrally formed ejector pipes and bases on the market usually have problems such as poor ejector performance, high flue gas, and low combustion efficiency.

[0003] As Figure 1 shown, the air flow in the front-end area near the air inlet of the outer-ring ejector pipe is usually less than that in the rear-end area, resulting in uneven gas in the outer-ring ejector pipe, affecting the mixing of gas in the outer-ring mixing chamber, causing uneven mixing in the outer ring, and affecting the combustion effect of the burner.

[0004] As Figure 2 shown, there is no gap between the upper side wall of the inner-ring outlet section of the inner-ring ejector pipe and the bottom surface of the base. This cavity is usually an area where gas is prone to flow back, resulting in a large gas recirculation area in the inner-ring ejector pipe of the burner, affecting the ejector effect of the inner-ring ejector pipe.

[0005] As Figure 3 shown, a damper plate is usually provided at the damper of the ejector pipe. The damper plate will block the damper, and the blocked area is prone to insufficient primary ejector air during ejection, with a low primary ejection coefficient and poor ejector effect, affecting the combustion efficiency of the burner. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the defect of uneven mixing in the outer ring of the existing burner, and provide a burner and a cooking stove.

[0007] The utility model solves the above technical problem through the following technical solutions:

[0008] The utility model provides a burner, which includes a base, an outer-ring ejector pipe, and a flow guiding structure;

[0009] The base includes an outer-ring mixing chamber, the outer-ring ejector pipe includes an outer-ring outlet section, and the outer-ring outlet section is connected to the base and communicates with the outer-ring mixing chamber;

[0010] Along the gas flow direction, the outer-ring outlet section has a front-end area near the air inlet of the outer-ring ejector pipe and a rear-end area far from the air inlet of the outer-ring ejector pipe; the flow guiding structure is arranged in the front-end area and fixed on the inner wall of the outer-ring outlet section, and the flow guiding structure is used to introduce the gas in the outer-ring ejector pipe from the front-end area into the outer-ring mixing chamber.

[0011] In this solution, the outer ring air outlet section has a front end area close to the air inlet of the outer ring ejector pipe and a rear end area far from the air inlet of the outer ring ejector pipe. By arranging a flow guiding structure in the front end area, the air flow can be guided to the periphery of the flow guiding structure, increasing the air flow in the front end area with less air flow, making the air flow in the outer ring ejector pipe more uniform. The flow guiding structure is used to introduce the gas in the outer ring ejector pipe from the front end area into the outer ring mixing chamber, so that the gas flowing into the outer ring mixing chamber is also more uniform, which is more conducive to the mixing of gas in the outer ring mixing chamber and improves the combustion efficiency of the burner.

[0012] Preferably, the flow guiding structure is strip-shaped, the flow guiding structure extends along the vertical direction, and the upper end of the flow guiding structure is close to the lower port of the outer ring mixing chamber.

[0013] In this solution, by arranging the flow guiding structure to extend along the vertical direction, it is more conducive to guiding the gas to the outer ring mixing chamber located above the flow guiding structure. The upper end of the flow guiding structure is close to the lower port of the outer ring mixing chamber, so that the gas can be better introduced into the outer ring mixing chamber, making the flow guiding effect of the flow guiding structure better and the outer ring mixing more uniform.

[0014] Preferably, the outer surface of the flow guiding structure is a curved surface, and the curved surface protrudes towards the outside of the flow guiding structure.

[0015] In this solution, the outer surface of the flow guiding structure is a curved surface, and the outer surface of the curved surface structure is smoother, so that the gas can be better introduced into the outer ring mixing chamber, making the flow guiding effect of the flow guiding structure better and the outer ring mixing more uniform.

[0016] Preferably, the burner further includes an inner ring ejector pipe, the base further includes an inner ring mixing chamber, the inner ring ejector pipe includes an inner ring air outlet section, and the inner ring air outlet section is connected to the base and communicates with the inner ring mixing chamber;

[0017] The upper end side wall of the inner ring air outlet section bends downward, and a gap is formed between the upper end side wall of the inner ring air outlet section and the bottom surface of the base.

[0018] In this solution, the area where the gap is located between the upper end side wall of the inner ring air outlet section and the bottom surface of the base is usually an area where gas is prone to flow back. By canceling the cavity where this gap is located, the phenomenon of inner ring gas flow back can be effectively avoided, the efficiency of gas flowing out of the inner ring ejector pipe is higher, and the combustion efficiency of the burner is improved.

[0019] Preferably, the outer ring ejector pipe further includes an outer ring air inlet section, and an air guiding ring slit is provided on the outer ring air inlet section, and the air guiding ring slit communicates the inside of the outer ring ejector pipe and the outside;

[0020] And / or, the inner annular ejector tube further includes an inner annular air inlet section, on which an air guiding annular slit is formed, and the air guiding annular slit communicates the interior of the inner annular ejector tube with the outside.

[0021] In this solution, by forming the air guiding annular slit on the outer annular air inlet section of the outer annular ejector tube and / or the inner annular air inlet section of the inner annular ejector tube, when the ejector tube ejects gas, air can enter the interior of the ejector tube from the outside through the air guiding annular slit, thereby solving the problem of insufficient air ejection of the ejector tube, improving the ejection effect of the ejector tube, and enhancing the combustion efficiency of the burner.

[0022] Preferably, the air guiding annular slit is arranged on the outer peripheral side of the outer annular air inlet section and / or the inner annular air inlet section, and the air guiding annular slit extends along the circumferential direction of the outer annular air inlet section and / or the inner annular air inlet section.

[0023] In this solution, the air guiding annular slit is arranged on the outer peripheral side of the outer annular air inlet section and / or the inner annular air inlet section, so that the air on the circumferential side of the air inlet section of the ejector tube can be fully introduced into the interior of the ejector tube. The air guiding annular slit extends along the circumferential direction of the outer annular air inlet section and / or the inner annular air inlet section, thereby increasing the range of air introduced by the air guiding annular slit, further enhancing the ejection effect of the ejector tube, and enhancing the combustion efficiency of the burner.

[0024] Preferably, a damper plate is provided at the air inlet of the inner annular ejector tube and the outer annular ejector tube, a nozzle mounting hole is provided on the damper plate, and the air guiding annular slit is arranged close to the nozzle mounting hole.

[0025] In this solution, the nozzle is installed in the nozzle mounting hole, and the gas is sprayed into the interior of the ejector tube from the nozzle. By arranging the air guiding annular slit close to the nozzle mounting hole, the distance between the air guiding annular slit and the nozzle is closer, so that the effect of the ejector tube ejecting air is better.

[0026] Preferably, the side wall of the air guiding annular slit close to the damper plate is located on the same plane as the inner wall surface of the damper plate.

[0027] In this solution, adopting the above structural form makes the air guiding annular slit as close to the nozzle as possible, so that the effect of the ejector tube ejecting air is better.

[0028] Preferably, the base, the inner annular ejector tube and the outer annular ejector tube are integrally formed.

[0029] In this solution, the integrally formed manner is more convenient for the production and manufacturing of the burner, and the processing cost of the burner is lower.

[0030] The present utility model further provides a cooking appliance, which includes the above-mentioned burner.

[0031] In this solution, the cooking appliance has the same effect as the above-mentioned burner.

[0032] The positive and progressive effects of the present utility model are as follows:

[0033] The present utility model provides a burner, which includes a base, an outer ring ejector pipe and a flow guiding structure. The outer ring outlet section of the outer ring ejector pipe has a front end area close to the air inlet of the outer ring ejector pipe and a rear end area far from the air inlet of the outer ring ejector pipe. By arranging the flow guiding structure in the front end area, the air flow can be guided to the periphery of the flow guiding structure, so that the air flow in the front end area with less air flow increases, making the air flow in the outer ring ejector pipe more uniform. The flow guiding structure is used to introduce the gas in the outer ring ejector pipe from the front end area into the outer ring mixing chamber, so that the gas flowing into the mixing chamber is also more uniform, which is more conducive to the mixing of the gas in the mixing chamber and improves the combustion efficiency of the burner. Description of the Drawings

[0034] Figure 1 It is a schematic diagram of the outer ring ejector velocity flow field of the burner in the prior art.

[0035] Figure 2 It is a schematic diagram of the inner ring ejector velocity flow field of the burner in the prior art.

[0036] Figure 3 It is a schematic diagram of the ejector velocity flow field at the air damper of the burner in the prior art.

[0037] Figure 4 It is a three-dimensional structure diagram of the burner according to an embodiment of the present utility model.

[0038] Figure 5 It is a sectional view of the outer ring of the burner according to an embodiment of the present utility model.

[0039] Figure 6 It is a sectional view of the inner ring of the burner according to an embodiment of the present utility model.

[0040] Figure 7 It is a side view of the burner according to an embodiment of the present utility model.

[0041] Figure 8 It is a top view of the intake section of the ejector pipe according to an embodiment of the present utility model.

[0042] Figure 9 It is a bottom view of the intake section of the ejector pipe according to an embodiment of the present utility model.

[0043] Figure 10 It is a sectional view of the intake section of the ejector pipe according to an embodiment of the present utility model.

[0044] Description of the Reference Numerals:

[0045] Burner 100

[0046] Base 200

[0047] Outer ring gas mixing chamber 210

[0048] Inner ring gas mixing chamber 220

[0049] Outer ring ejector tube 300

[0050] Outer ring gas outlet section 310

[0051] Front end area 311

[0052] Rear end area 312

[0053] Air inlet 313

[0054] Outer ring air inlet section 320

[0055] Inner ring ejector tube 400

[0056] Inner ring gas outlet section 410

[0057] Inner ring air inlet section 420

[0058] Gap 430

[0059] Flow guiding structure 500

[0060] Air guiding ring gap 600

[0061] Air damper blade 700

[0062] Nozzle mounting hole 710

[0063] Gas flow direction X Specific embodiments

[0064] The present utility model will be further described below by way of embodiments, but the present utility model is not limited to the following embodiments.

[0065] This embodiment provides a cooking appliance, and the cooking appliance includes a burner 100.

[0066] As Figures 4 - 6 shown, the burner 100 includes a base 200, an outer ring ejector tube 300 and a flow guiding structure 500. The base 200 includes an outer ring gas mixing chamber 210. The outer ring ejector tube 300 includes an outer ring gas outlet section 310. The outer ring gas outlet section 310 is connected to the base 200 and communicates with the outer ring gas mixing chamber 210.

[0067] Along the gas flow direction X, in the outer ring gas outlet section 310, there are a front-end region 311 near the air inlet 313 of the outer ring ejector tube 300 and a rear-end region 312 far from the air inlet 313 of the outer ring ejector tube 300. The flow guiding structure 500 is arranged in the front-end region 311 and fixed on the inner wall of the outer ring gas outlet section 310. The flow guiding structure 500 is used to introduce the gas in the outer ring ejector tube 300 into the outer ring gas mixing chamber 210 from the front-end region 311.

[0068] In this embodiment, by arranging the flow guiding structure 500 in the front-end region 311, the air flow can be diverted to the periphery of the flow guiding structure 500, increasing the air flow in the front-end region 311 with less air flow, making the air flow in the outer ring ejector tube 300 more uniform. The flow guiding structure 500 is used to introduce the gas in the outer ring ejector tube 300 into the outer ring gas mixing chamber 210 from the front-end region 311, so that the gas flowing into the outer ring gas mixing chamber 210 is also more uniform, which is more conducive to the mixing of gas in the outer ring gas mixing chamber 210 and improves the combustion efficiency of the burner 100.

[0069] As Figure 5 shown, in this embodiment, the flow guiding structure 500 is strip-shaped, the flow guiding structure 500 extends in the vertical direction, and the upper end of the flow guiding structure 500 is close to the lower port of the outer ring gas mixing chamber 210. By arranging the flow guiding structure 500 to extend in the vertical direction, it is more conducive to diverting the gas to the outer ring gas mixing chamber 210 above the flow guiding structure 500. The upper end of the flow guiding structure 500 is close to the lower port of the outer ring gas mixing chamber 210, so that the gas can be better introduced into the outer ring gas mixing chamber 210, making the flow guiding effect of the flow guiding structure 500 better and the outer ring gas mixing more uniform. In other embodiments, other shapes of flow guiding structures that are considered suitable by those skilled in the art can also be selected.

[0070] In this embodiment, the outer surface of the flow guiding structure 500 is a curved surface, which protrudes outward from the flow guiding structure 500. The outer surface of the curved surface structure is smoother, so that the gas can be better introduced into the outer ring gas mixing chamber 210, making the flow guiding effect of the flow guiding structure 500 better and the outer ring gas mixing more uniform. In other embodiments, the outer surface of the flow guiding structure may not be a curved surface.

[0071] As Figure 4 and Figure 6 shown, the burner 100 further includes an inner ring ejector tube 400. The base 200 further includes an inner ring gas mixing chamber 220. The inner ring ejector tube 400 includes an inner ring gas outlet section 410. The inner ring gas outlet section 410 is connected to the base 200 and communicates with the inner ring gas mixing chamber 220. The upper end side wall of the inner ring gas outlet section 410 bends downward, and a gap 430 is formed between the upper end side wall of the inner ring gas outlet section 410 and the bottom surface of the base 200.

[0072] The region where the gap 430 is located between the upper sidewall of the inner-ring air outlet section 410 and the bottom surface of the base 200 is usually a region where gas is prone to flow back. In this embodiment, by canceling the cavity where the gap 430 is located, the phenomenon of inner-ring gas flow-back can be effectively avoided, the efficiency of the gas flowing out of the inner-ring ejector tube 400 is higher, and the combustion efficiency of the burner 100 is improved.

[0073] As Figure 7 shown, air damper plates 700 are provided at the air inlets 313 of the inner-ring ejector tube 400 and the outer-ring ejector tube 300. Nozzle mounting holes 710 are provided on the air damper plates 700, and nozzles are mounted in the nozzle mounting holes 710. Gas is injected into the interior of the ejector tube from the nozzle mounting holes 710 to eject air. In the burners of the prior art, due to the obstruction of the air damper plates, there is insufficient air ejection around the region where the air damper plates are located.

[0074] As Figures 7 - 10 shown, the outer-ring ejector tube 300 further includes an outer-ring air inlet section 320, and an air guiding ring slot 600 is formed in the outer-ring air inlet section 320. The air guiding ring slot 600 communicates the interior of the outer-ring ejector tube 300 with the outside. The inner-ring ejector tube 400 includes an inner-ring air inlet section 420, and an air guiding ring slot 600 is formed in the inner-ring air inlet section 420. The air guiding ring slot 600 communicates the interior of the inner-ring ejector tube 400 with the outside. By forming the air guiding ring slot 600 in the outer-ring air inlet section 320 of the outer-ring ejector tube 300 and / or the inner-ring air inlet section 420 of the inner-ring ejector tube 400, when the ejector tube ejects gas, air can enter the interior of the ejector tube from the outside through the air guiding ring slot 600, thereby solving the problem of insufficient air ejection of the ejector tube, improving the ejection effect of the ejector tube, and enhancing the combustion efficiency of the burner 100.

[0075] In this embodiment, air guiding ring slots 600 are provided in both the inner-ring air inlet section 420 and the outer-ring air inlet section 320. In other embodiments, the air guiding ring slot can also be provided only in the inner-ring air inlet section or the outer-ring air inlet section.

[0076] The air guiding ring slot 600 is provided on the outer peripheral side of the outer-ring air inlet section 320 and / or the inner-ring air inlet section 420, so that the air on the peripheral side of the air inlet section of the ejector tube can be fully introduced into the interior of the ejector tube. The air guiding ring slot 600 extends circumferentially along the outer-ring air inlet section 320 and / or the inner-ring air inlet section 420, thereby increasing the range of air introduced by the air guiding ring slot 600, further enhancing the ejection effect of the ejector tube, and enhancing the combustion efficiency of the burner 100. In this embodiment, the air guiding ring slot 600 extends circumferentially along the air inlet section. In other embodiments, other extension directions of the air guiding ring slot that are considered suitable by those skilled in the art can also be selected.

[0077] As Figure 7, in this embodiment, since the damper plate 700 mainly blocks the upper and lower sides of the damper, resulting in insufficient entrained air on the upper and lower sides of the damper, the air entrainment ring slots 600 are provided on the upper and lower sides of the air inlet section. In other embodiments, those skilled in the art can select other suitable positions for setting the air entrainment ring slots according to the actual situation.

[0078] In this embodiment, the air entrainment ring slots 600 are arranged close to the nozzle mounting holes 710, and the distance between the air entrainment ring slots 600 and the nozzles is closer, so that the effect of the entrainment pipe entraining air is better.

[0079] The side wall of the air entrainment ring slot 600 close to the damper plate 700 is located on the same plane as the inner wall surface of the damper plate 700, so that the air entrainment ring slot 600 is as close as possible to the nozzle, and the effect of the entrainment pipe entraining air is better.

[0080] In this embodiment, the base 200, the inner ring entrainment pipe 400 and the outer ring entrainment pipe 300 are integrally formed. The integral forming method is more convenient for the production and manufacturing of the burner 100, and the processing cost of the burner 100 is lower. In other embodiments, the base, the inner ring entrainment pipe and the outer ring entrainment pipe can also be separately manufactured and then assembled, and those skilled in the art can also select other suitable processing and assembly methods according to actual needs.

[0081] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation of the device or component in normal use, and is only for the convenience of describing the present invention 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 at any time. Therefore, it should not be construed as a limitation of the present invention in this regard.

[0082] Although the specific implementation manners of the present invention have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A burner, characterized in that: The burner comprises a base, an outer ring ejector pipe and a flow guide structure; The base includes an outer ring gas mixing cavity, and the outer ring ejector pipe includes an outer ring gas outlet section, and the outer ring gas outlet section is connected to the base and communicated with the outer ring gas mixing cavity; Along the gas flow direction, the outer ring air outlet section has a front end area close to the air inlet of the outer ring ejector tube and a rear end area away from the air inlet of the outer ring ejector tube; the guide structure is arranged in the front end area and fixed on the inner wall of the outer ring air outlet section, and the guide structure is used to introduce the gas in the outer ring ejector tube from the front end area into the outer ring mixing chamber.

2. The burner according to claim 1, characterized in that The flow-guiding structure is in the shape of an elongated strip and extends in a vertical direction. The upper end of the flow-guiding structure is close to the lower port of the outer ring gas mixing chamber.

3. The burner according to claim 2, characterized in that The outer surface of the flow-guiding structure is a curved surface, and the curved surface protrudes toward the outside of the flow-guiding structure.

4. The burner according to claim 1, characterized in that The burner further comprises an inner ring ejector pipe, the base further comprises an inner ring gas mixing chamber, the inner ring ejector pipe comprises an inner ring gas outlet section, the inner ring gas outlet section is connected to the base and communicates with the inner ring gas mixing chamber; The upper end side wall of the inner ring air outlet section is bent downward, and a gap is formed between the upper end side wall of the inner ring air outlet section and the bottom surface of the base.

5. The burner according to claim 4, characterized in that The outer ring ejector pipe also includes an outer ring air inlet section, and an air induction annular slit is formed on the outer ring air inlet section, and the air induction annular slit connects the inside of the outer ring ejector pipe with the outside; And / or, the inner ring ejector tube further comprises an inner ring air inlet section, and an air induction annular slit is formed on the inner ring air inlet section, and the air induction annular slit connects the inside and the outside of the inner ring ejector tube.

6. The burner according to claim 5, characterized in that The air induction annular seam is arranged on the outer peripheral side of the outer ring air inlet section and / or the inner ring air inlet section, and the air induction annular seam extends along the circumference of the outer ring air inlet section and / or the inner ring air inlet section.

7. The burner according to claim 6, characterized in that Air inlets of the inner ring ejector tube and the outer ring ejector tube are provided with air flaps, the air flaps are provided with nozzle mounting holes, and the air induction ring seams are arranged close to the nozzle mounting holes.

8. The burner according to claim 7, characterized in that The side wall of the air induction annular seam close to the air flap is located on the same plane as the inner wall surface of the air flap.

9. The burner according to any one of claims 4 to 8, characterized in that: The base, the inner ring ejector tube and the outer ring ejector tube are integrally formed.

10. A cooking appliance, characterized in that: The burner comprises a burner as claimed in any one of claims 1 to 9.

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