Rotational flow gas mixing type swirling fire metal plate furnace end

Abstract

The utility model discloses a rotational flow gas mixing type swirling fire metal plate furnace end which comprises a furnace upper shell, a furnace lower shell and a partition plate. The furnace upper shell, the furnace lower shell and the partition plate are made of stainless steel sheet metal. The furnace upper shell is provided with a circular-ring-shaped inverted-cone-shaped fire outlet upper wall. A plurality of spiral upper fire outlet grooves are formed in the fire outlet upper wall, and a plurality of spiral lower fire outlet grooves are formed in the fire outlet lower wall; the partition plate is arranged between the fire outlet upper wall and the fire outlet lower wall, and the upper fire outlet groove and the lower fire outlet groove are both communicated with the gas mixing cavity; the injection pipe is arranged on the side face of the gas mixing cavity and connected to the annular gas mixing cavity in a tangent line shape. The end, away from the injection pipe, of the bottom face of the gas mixing cavity inclines upwards. According to the utility model, fuel gas is guided into the gas mixing cavity through the tangential injection pipe to form centrifugal rotational flow motion, so that the three-dimensional dynamic mixing effect of the fuel gas and air is obviously improved; a spiral-flow type fuel gas fire supply output result is formed by adopting the design of a circular-ring-shaped inverted-cone-shaped fire outlet wall and upper and lower fire outlet grooves which are spirally distributed in a staggered mode.

Description

Technical Field

[0001] This utility model relates to the technical field of stove accessories, and in particular to a swirling mixed gas type swirling flame sheet metal burner head. Background Technology

[0002] Traditional gas appliance burners are mostly made of materials such as cast iron, aluminum alloy, or copper. However, these materials have significant drawbacks: cast iron is susceptible to corrosion and oxidation, and long-term use can lead to porosity or cracks, resulting in a risk of gas leakage; aluminum alloy has a low melting point and is prone to deformation at high temperatures, affecting combustion stability; while copper has excellent thermal conductivity, it is expensive and has limited oxidation resistance, and under long-term high-temperature conditions, the surface oxide layer is prone to peeling off, shortening its service life. In addition, burners made of traditional materials generally suffer from insufficient surface smoothness and low gas mixing efficiency, which can easily lead to incomplete combustion and pose safety hazards.

[0003] In recent years, stainless steel has gradually become the preferred material for burner manufacturing due to its advantages such as high melting point, resistance to high-temperature oxidation, high surface finish, and strong corrosion resistance. For example, Chinese patent CN202122777870.8 discloses a stainless steel sheet metal assembled burner head structure, which combines upper and lower sheet metal parts to form an injector tube and an annular mixing chamber. Although this reduces manufacturing costs, it is limited by the structural design, resulting in a single gas supply path that relies solely on direct injection nozzles for ignition. Firstly, the high flame concentration of the direct injection nozzles leads to uneven heat distribution in the combustion area, easily causing localized overheating. Secondly, the lack of a swirling combustion structure results in insufficient mixing of gas and air, leading to low combustion efficiency. Thirdly, the gas from the injector tube is directly injected into the mixing chamber and diffused before being directly injected from the nozzles, resulting in ineffective mixing of gas and air within the mixing chamber.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a swirling gas mixing type swirling sheet metal furnace head.

[0006] The technical solution adopted by one embodiment of the present invention to solve its technical problem is: a swirling mixed gas type swirling fire sheet metal furnace head, comprising: an upper furnace shell, a lower furnace shell and a partition plate made of stainless steel sheet metal.

[0007] The upper furnace shell is assembled with the upper furnace shell to form the main body of the furnace head. The main body of the furnace head includes a gas mixing chamber and an ejector tube that are connected to each other. The gas mixing chamber is arranged in a ring shape.

[0008] The upper furnace shell is provided with an annular inverted conical upper fire outlet wall; the lower furnace shell is provided with an annular inverted conical lower fire outlet wall; the lower fire outlet wall is spaced below the upper fire outlet wall; the upper fire outlet wall has a plurality of spiral upper fire outlet grooves, and the lower fire outlet wall has a plurality of spiral lower fire outlet grooves; the partition plate is provided between the upper fire outlet wall and the lower fire outlet wall, and both the upper fire outlet grooves and the lower fire outlet grooves are in communication with the gas mixing chamber;

[0009] The ejector tube is disposed on the side of the gas mixing chamber and is tangentially connected to the annular gas mixing chamber; the bottom surface of the gas mixing chamber is inclined upward at the end away from the ejector tube.

[0010] Optionally, the furnace lower shell further includes an inner ring wall, and the lower fire outlet wall is disposed above the inner ring wall.

[0011] Optionally, the outer edge of the partition plate is provided with a lower edge retaining part, which can be engaged with the wall surface of the inner ring wall.

[0012] Optionally, the inner edge of the partition plate is provided with an inner locking part, which can be locked onto the inner edge of the lower wall of the flame outlet.

[0013] Optionally, the partition plate is also provided with a U-shaped flame distribution groove; the flame distribution groove is located near the gas outlet end of the ejector tube, and the flame distribution groove is provided with a number of spaced flame distribution holes.

[0014] Optionally, the flame divider groove is arc-shaped and attached to the inner ring wall, extending from one end of the mixing chamber near the outlet end of the injector along a square shape away from the gas flow.

[0015] Optionally, a plurality of upper abutments are provided above the outer edge of the fire-dividing baffle groove, and the upper abutments can abut against the upper shell of the furnace.

[0016] Optionally, the upper and lower fire outlet slots are arranged alternately.

[0017] Optionally, the outer edge of the upper shell of the furnace is provided with an upper shell skirt plate, and the outer edge of the lower shell of the furnace is provided with a lower shell skirt plate; the upper shell skirt plate and the lower shell skirt plate are fitted together.

[0018] Optionally, the upper shell skirt plate and the lower shell skirt plate are connected by riveting or welding.

[0019] The beneficial effects of this invention are as follows: After the gas is introduced into the mixing chamber through the tangential ejector tube, it forms a centrifugal swirling motion, which significantly improves the three-dimensional dynamic mixing effect of the gas and air; the design of the annular inverted conical flame outlet wall and the spirally distributed upper and lower flame outlet grooves creates a swirling gas supply output; the layered spiral flame groove structure makes the flame present a three-dimensional swirling shape, improves the uniformity of heat distribution in the combustion area, effectively eliminates local overheating, and at the same time, the swirling structure extends the gas residence time, making the combustion more complete.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of the swirl-fired sheet metal furnace head of this utility model;

[0023] Figure 2 for Figure 1 Exploded view of the vortex-fired sheet metal furnace head;

[0024] Figure 3 for Figure 1 Cross-sectional view of the vortex-fired sheet metal furnace head.

[0025] Explanation of key component symbols:

[0026] 10. Furnace upper shell; 11. Flame outlet upper wall; 12. Upper flame outlet groove; 13. Upper shell skirt plate; 20. Furnace lower shell; 21. Flame outlet lower wall; 22. Lower flame outlet groove; 23. Inner ring wall; 24. Lower shell skirt plate; 30. Divider plate; 31. Lower edge retaining part; 32. Inner retaining part; 33. Flame distribution baffle groove; 34. Flame distribution hole; 35. Upper abutment part; 40. Mixing chamber; 50. Injector tube. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Example

[0032] Reference Figures 1 to 3 The present invention proposes a swirling mixed gas type swirling fire sheet metal furnace head, comprising: an upper furnace shell 10, a lower furnace shell 20, and a partition plate 30 made of stainless steel sheet metal.

[0033] The upper shell 10 of the furnace is assembled with the upper shell 10 of the furnace to form the main body of the furnace head. The main body of the furnace head includes a mixing chamber 40 and an ejector tube 50 connected to each other. The mixing chamber 40 is arranged in an annular shape.

[0034] The upper shell 10 of the furnace is provided with an annular inverted conical upper fire outlet wall 11; the lower shell 20 of the furnace is provided with an annular inverted conical lower fire outlet wall 21; the lower fire outlet wall 21 is spaced below the upper fire outlet wall 11; the upper fire outlet wall 11 is provided with a plurality of spiral upper fire outlet grooves 12, and the lower fire outlet wall 21 is provided with a plurality of spiral lower fire outlet grooves 22; the partition plate 30 is provided between the upper fire outlet wall 11 and the lower fire outlet wall 21, and both the upper fire outlet grooves 12 and the lower fire outlet grooves 22 are connected to the mixing chamber 40;

[0035] The ejector tube 50 is disposed on the side of the mixing chamber 40 and is tangentially connected to the annular mixing chamber 40; the bottom surface of the mixing chamber 40 is inclined upward at the end away from the ejector tube 50.

[0036] In this invention, the gas is introduced into the mixing chamber 40 through the tangential ejector tube 50 and forms a centrifugal swirling motion, which significantly improves the three-dimensional dynamic mixing effect of the gas and air. The design of the annular inverted conical flame outlet wall and the spirally distributed upper and lower flame outlet grooves 22 forms a swirling gas supply output. The layered spiral flame groove structure makes the flame present a three-dimensional swirling shape, which improves the uniformity of heat distribution in the combustion area and effectively eliminates local overheating. At the same time, the swirling structure extends the gas residence time, making the combustion more complete.

[0037] In this embodiment, the furnace lower shell 20 also includes an inner ring wall 23, and the flame outlet lower wall 21 is disposed above the inner ring wall 23. The inner ring wall 23 can constrain the gas flow path and avoid turbulence, while providing an installation reference for the partition plate 30 to ensure the precise alignment of the flame outlet slot and the mixing chamber 40, further improving the uniformity of gas distribution and combustion stability.

[0038] Specifically, the outer edge of the partition plate 30 is provided with a lower edge locking part 31, which can be locked onto the wall surface of the inner ring wall 23. The lower edge locking part 31 of the outer edge of the partition plate 30 is engaged with the inner ring wall 23 to achieve screwless assembly: the locking structure makes the partition plate 30 and the inner ring wall 23 fit tightly together.

[0039] In this embodiment, the inner edge of the partition plate 30 is provided with an inner locking part 32, which can be locked onto the inner edge of the lower flame outlet wall 21. The inner locking part 32 of the inner edge of the partition plate 30 engages with the lower flame outlet wall 21 to form a dual-point positioning system: the inner and outer locking parts work together to eliminate the vibration displacement of the partition plate 30 and avoid backfire or flameout caused by uneven airflow.

[0040] In this embodiment, the partition plate 30 is also provided with a U-shaped flame distribution groove 33. The flame distribution groove 33 is located near the gas outlet end of the injector tube 50, and has several spaced flame distribution holes 34. The U-shaped structure of the flame distribution groove 33, located near the gas outlet end of the injector tube 50, can buffer and guide the high-speed gas flow, preventing the gas from concentrating and rushing into the flame outlet groove near the gas outlet end of the injector tube 50. Instead, the gas can diffuse towards the mixing chamber 40 and then evenly supply flame to each flame outlet groove. The spaced flame distribution holes 34 on the flame distribution groove 33 can divide the gas flow into multiple fine streams, which can slow down the direct rush of gas from the injector tube 50 into the flame outlet groove at the gas outlet end, making the gas flow in the flame outlet groove more stable.

[0041] Furthermore, the flame divider groove 33 is arc-shaped and attached to the inner ring wall 23, extending from the end of the mixing chamber 40 near the outlet end of the injector tube 50 along a square shape opposite to the gas flow. The arc-shaped flame divider groove 33 extends in the opposite direction to the inner ring wall 23. On the one hand, it can prevent the gas from being directly injected into the flame outlet groove without undergoing centrifugal rotation; on the other hand, it can guide the gas flow at the rear end of the centrifugal swirl into the flame divider groove, further rotating and guiding the centrifugal swirl gas upward before it is sent out from the flame outlet groove.

[0042] In this embodiment, a plurality of upper abutments 35 are provided above the outer edge of the fire diversion groove 33, and the upper abutments 35 can abut against the furnace shell 10. The upper abutments 35 of the outer edge of the fire diversion groove 33 abut against the furnace shell 10 to form a three-dimensional support frame.

[0043] In this embodiment, the upper flame outlet 12 and the lower flame outlet 22 are arranged alternately. The upper and lower flames complement each other in space, achieving a three-dimensional distribution of heat, reducing the heat accumulation problem of traditional single-layer direct-injection flame holes, and are especially suitable for cookware of different shapes, improving heating efficiency and energy utilization.

[0044] In this embodiment, an upper shell skirt plate 13 is provided on the outer edge of the upper shell 10, and a lower shell skirt plate 24 is provided on the outer edge of the lower shell 20; the upper shell skirt plate 13 and the lower shell skirt plate 24 are fitted together. This structure simplifies the assembly process, avoids deformation problems caused by traditional welding or riveting, and enhances the overall rigidity of the furnace head, reducing the risk of shell cracking under high-temperature conditions.

[0045] Specifically, the upper shell skirt plate 13 and the lower shell skirt plate 24 are connected by riveting or welding.

[0046] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A swirling gas mixing type swirling sheet metal furnace head, characterized in that, include: The furnace upper shell (10), furnace lower shell (20), and partition plate (30) are made of stainless steel sheet metal. The upper shell (10) and the upper shell (10) are assembled to form the main body of the furnace head. The main body of the furnace head includes a mixing chamber (40) and an ejector tube (50) connected to each other. The mixing chamber (40) is arranged in an annular shape. The upper shell of the furnace (10) is provided with an annular inverted conical upper fire outlet wall (11); the lower shell of the furnace (20) is provided with an annular inverted conical lower fire outlet wall (21); the lower fire outlet wall (21) is spaced below the upper fire outlet wall (11); the upper fire outlet wall (11) is provided with a plurality of spiral upper fire outlet grooves (12), and the lower fire outlet wall (21) is provided with a plurality of spiral lower fire outlet grooves (22); the partition plate (30) is provided between the upper fire outlet wall (11) and the lower fire outlet wall (21), and the upper fire outlet grooves (12) and the lower fire outlet grooves (22) are both connected to the mixing chamber (40); The ejector tube (50) is disposed on the side of the gas mixing chamber (40) and is tangentially connected to the annular gas mixing chamber (40); the bottom surface of the gas mixing chamber (40) is inclined upward at the end away from the ejector tube (50).

2. The swirling gas mixing type swirling sheet metal furnace head according to claim 1, characterized in that: The furnace lower shell (20) also includes an inner ring wall (23), and the fire outlet lower wall (21) is disposed above the inner ring wall (23).

3. The swirling gas mixing type swirling sheet metal furnace head according to claim 2, characterized in that: The outer edge of the partition plate (30) is provided with a lower edge locking part (31), which can be locked onto the wall surface of the inner ring wall (23).

4. The swirling gas mixing type swirling sheet metal furnace head according to claim 3, characterized in that: The inner edge of the partition plate (30) is provided with an inner locking part (32), which can be locked onto the inner edge of the lower fire outlet wall (21).

5. The swirling gas mixing type swirling sheet metal furnace head according to claim 2, characterized in that: The partition plate (30) is also provided with a "U"-shaped flame divider groove (33); the flame divider groove (33) is provided near the gas outlet end of the ejector tube (50), and the flame divider groove (33) is provided with a number of spaced flame divider holes (34).

6. The swirling gas mixing type swirling sheet metal furnace head according to claim 5, characterized in that: The fire-dividing groove (33) is arc-shaped and attached to the inner ring wall (23), and extends from the end of the mixing chamber (40) near the gas outlet end of the ejector tube (50) in a square shape away from the gas flow.

7. The swirling gas mixing type swirling sheet metal furnace head according to claim 5, characterized in that: A plurality of upper abutments (35) are provided above the outer edge of the fire-dividing baffle groove (33), and the upper abutments (35) can abut against the furnace shell (10).

8. The swirling gas mixing type swirling sheet metal furnace head according to claim 1, characterized in that: The upper fire outlet groove (12) and the lower fire outlet groove (22) are arranged alternately.

9. The swirling gas mixing type swirling sheet metal furnace head according to claim 1, characterized in that: The outer edge of the upper shell (10) of the furnace is provided with an upper shell skirt plate (13), and the outer edge of the lower shell (20) of the furnace is provided with a lower shell skirt plate (24); the upper shell skirt plate (13) and the lower shell skirt plate (24) are fitted together.

10. The swirling gas mixing type swirling sheet metal furnace head according to claim 9, characterized in that: The upper shell skirt plate (13) and the lower shell skirt plate (24) are connected by riveting or welding.

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