Fin type stainless steel burner cap, burner and gas stove

Abstract

The invention provides a fin type stainless steel burner cap, a burner and a gas stove. The fin type stainless steel burner cap comprises an outer ring and an inner ring which are made of stainless steel. The inner ring is located in the outer ring, and an annular fire hole area is formed between the inner ring and the outer ring; at least two fire hole rings made of stainless steel are sequentially arranged in the fire hole area in the radial direction of the outer ring, a plurality of bends are arranged on the surface of each fire hole ring, and the cross section of each fire hole ring is in a wave shape. Isolating rings are arranged between the adjacent fire hole rings, and fire holes are formed among the inner ring, the outer ring, the isolating rings and the bends of the adjacent fire hole rings. According to the fin type stainless steel fire cover, the combustor and the gas stove, the problems that a stainless steel fire cover leaves flames, is difficult to machine, is difficult to increase thermal load, is low in thermal efficiency and the like can be solved.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a finned stainless steel burner cap, burner, and gas stove. Background Technology

[0002] With the development of the market environment, the sales share of high-performance household gas stoves has continued to rise. To meet the demand for high performance, major manufacturers are vying to develop a new generation of high-efficiency burners to further consolidate their market position. Currently, there has been in-depth research on the burner head ejector performance, flame hole layout, and energy-concentrating pot support of traditional burners. To achieve further breakthroughs in thermal efficiency, in addition to further optimizing the heat insulation scheme, it is also necessary to consider using materials with lower thermal conductivity to reduce heat loss. Currently, the commonly used materials for burner caps are alloy copper, thick stainless steel (wall thickness 2.8~3.0mm), and thin stainless steel (wall thickness 0.6~0.8mm). Among them, the thermal conductivity of alloy copper is about 109–121 W / (m•K) (at room temperature of 20°C), and the thermal conductivity of stainless steel is about 24–26 W / (m•K) (at room temperature of 20°C).

[0003] For alloy copper burner caps, their ease of processing and forming allows for the creation of burner holes with varying angles and diameters, resulting in superior flame stability, a more rational burner hole layout, and greater damper margin. This allows for the addition of more primary air by opening more dampers, reducing flue gas emissions and accommodating lower boiler supports, thereby improving efficiency. However, for ultra-high-efficiency burners, the high thermal conductivity of alloy copper burner caps can negatively impact energy efficiency.

[0004] While stainless steel burner caps have a lower thermal conductivity, their higher hardness makes them more difficult to process compared to copper. Generally, only larger burner holes can be drilled; otherwise, the drill bit is prone to breakage, hindering processing or mass production. Furthermore, the larger burner holes in stainless steel caps result in poor flame stabilization, requiring the closure of more air dampers to prevent the burner from leaving the flame. This increases smoke levels, necessitating raising the pot support to ensure adequate smoke control, which in turn reduces thermal efficiency. Therefore, stainless steel burner caps are generally less efficient than copper burner caps. Additionally, stainless steel burner caps can employ a grooved burner design, typically created by cutting multiple grooves through the burner hole surface with a saw blade. However, for high-load stoves, the same burner cap with a grooved burner design has a significantly smaller burner hole area than a round burner hole design, leading to insufficient hole area and higher smoke levels. Increasing the burner cap diameter to accommodate a larger grooved burner area would reduce cost and energy efficiency (a larger diameter means the flame is further outward).

[0005] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0006] The purpose of this invention is to provide a finned stainless steel flame cap that can solve the problems of flame lift-off, difficulty in processing, difficulty in increasing heat load, and low thermal efficiency of stainless steel flame caps.

[0007] Another objective of this invention is to provide a burner comprising the aforementioned finned stainless steel flame cap, which can solve problems such as flame lift-off, difficulty in processing, difficulty in increasing heat load, and low thermal efficiency of stainless steel flame caps.

[0008] Another objective of this invention is to provide a gas stove that includes the above-mentioned burner, which can solve the problems of flame detachment, difficulty in processing, difficulty in increasing heat load, and low thermal efficiency of stainless steel burner caps.

[0009] To achieve the above objectives, the present invention provides the following technical solution: A finned stainless steel flame cap includes an outer ring and an inner ring made of stainless steel; the inner ring is located inside the outer ring, and an annular flame hole area is formed between the inner ring and the outer ring; At least two stainless steel flame hole rings are arranged in sequence along the radial direction of the outer ring within the flame hole area. The surface of the flame hole ring has multiple bends, making the cross-section of the flame hole ring wavy. An isolation ring is provided between adjacent flame hole rings, and flame holes are formed between the bends of the inner ring, the outer ring, the isolation ring, and the adjacent flame hole ring.

[0010] According to one embodiment of the present invention, the cross-sectional area of ​​the bend of the flame hole ring near the outer ring is smaller than the cross-sectional area of ​​the bend of the flame hole ring near the inner ring.

[0011] According to one embodiment of the present invention, the cross-section of the bend is V-shaped, U-shaped, or arc-shaped.

[0012] According to one embodiment of the present invention, the cross-sectional areas of the fire hole ring and the isolation ring gradually increase from bottom to top.

[0013] According to one embodiment of the present invention, the inner ring includes a first ring body and a second ring body, the second ring body extending upward from the top of the first ring body, and the cross-sectional area of ​​the second ring body gradually increasing from bottom to top; The outer ring includes a third ring, a fourth ring, and a fifth ring. The cross-sectional area of ​​the third ring gradually increases from bottom to top. The fourth ring extends outward from the top of the third ring, and the fifth ring extends downward from the outer end of the fourth ring. The fire hole region is formed between the second ring body and the third ring body.

[0014] According to one embodiment of the present invention, the inner ring, the outer ring, the isolation ring, and the fire hole ring are welded together as a whole.

[0015] According to one embodiment of the present invention, the isolation ring is made of stainless steel; And / or, a sealing plate is provided in the center of the inner ring.

[0016] The present invention also provides a burner comprising the above-described finned stainless steel burner cap.

[0017] According to one embodiment of the present invention, the burner includes a furnace head, the furnace head having an annular fire channel, and the finned stainless steel burner cap being disposed at the top opening of the annular fire channel.

[0018] The present invention also provides a gas stove, including the burner described above.

[0019] Compared with the prior art, the advantages and beneficial effects of the embodiments of the present invention are as follows: The finned stainless steel burner cap, burner, and gas stove provided in this invention have flame holes formed between the inner ring, outer ring, and isolation ring and the bends of adjacent flame hole rings. Each component can be formed by stamping, eliminating the need for machining or drilling the stainless steel material, thus solving the problem of difficult machining of stainless steel burner caps. Furthermore, since machining and drilling are unnecessary, relatively small flame holes can be formed, enhancing the flame stabilization capability of the stainless steel burner cap. This allows for a more reasonable and larger air damper opening, solving the problem of high flue gas levels. Simultaneously, the improved flame stabilization capability also increases the heat intensity of individual flame holes, resulting in higher combustion temperatures and enhanced heat exchange efficiency. The finned stainless steel burner cap provided in this invention has a ring of flame holes formed between the inner ring, outer ring, and isolation ring and the bends of adjacent flame hole rings, with the flame holes tightly connected, significantly increasing the flame hole area. This provides the burner cap with sufficient flame hole area to meet the needs of high loads, solving the problem of the difficulty in achieving high heat loads with stainless steel burner caps. The finned stainless steel flame cap provided in this embodiment of the invention uses stainless steel material. While achieving the same flame stability, flame hole heat intensity, and flame hole area as the alloy copper flame cap, the use of stainless steel material results in a lower thermal conductivity than alloy copper, which can reduce heat loss and achieve further breakthroughs in ultra-high energy efficiency. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. Wherein: Figure 1 This is a schematic diagram of the structure of the finned stainless steel flame cap provided in an embodiment of the present invention; Figure 2An assembly diagram of a finned stainless steel flame cap provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the flame hole ring of the finned stainless steel flame cap provided in an embodiment of the present invention; Figure 4 A cross-sectional schematic diagram of a finned stainless steel flame cap provided in an embodiment of the present invention; Figure 5 A schematic diagram of the outer and inner rings of the finned stainless steel flame cap provided in an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a finned stainless steel flame cap provided in another embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures: 1. Outer ring; 11. Third ring; 12. Fourth ring; 13. Fifth ring; 2. Inner ring; 21. First ring; 22. Second ring; 3. Flame hole area; 4. Flame hole ring; 41. Bending; 42. Flame hole; 5. Isolation ring. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. Indeed, those skilled in the art will recognize that modifications and variations can be made to the invention without departing from its scope or spirit. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the invention encompass such modifications and variations falling within the scope of the appended claims and their equivalents.

[0023] In the description of this invention, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected," "linked," and "set up" used in this invention should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; a wired connection, a radio connection, or a wireless communication signal connection. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0024] like Figures 1-5 As shown, an embodiment of the present invention provides a finned stainless steel flame cap, comprising an outer ring 1 and an inner ring 2 made of stainless steel. For ease of explanation, the following definitions are provided. Figure 2 The upper part is called "upper," and the lower part is called "lower." The inner ring 2 is located inside the outer ring 1, and an annular flame hole area 3 is formed between the inner ring 2 and the outer ring 1. At least two stainless steel flame hole rings 4 are sequentially arranged radially along the outer ring 1 within the flame hole area 3. The surface of each flame hole ring 4 has multiple bends 41, making its cross-section wavy. An isolation ring 5 is provided between adjacent flame hole rings 4, and flame holes 42 are formed between the bends 41 of the inner ring 2, the outer ring 1, the isolation ring 5, and the adjacent flame hole ring 4. This invention is illustrated using two flame hole rings 4 and one isolation ring 5 as an example, but is not limited thereto. Figure 6 As shown, it has a structure that includes three fire hole rings 4 and two isolation rings 5.

[0025] The finned stainless steel flame cap provided in this embodiment of the invention forms flame holes 42 between the inner ring 2, outer ring 1, and isolation ring 5 and the bends 41 of adjacent flame hole rings 4. Each component can be formed by stamping, eliminating the need for machining or drilling the stainless steel material, thus solving the problem of difficult machining of stainless steel flame caps. Furthermore, since machining and drilling are unnecessary, relatively small flame holes 42 can be formed, enhancing the flame stabilization capability of the stainless steel flame cap and allowing for a more reasonable damper opening, enabling a larger opening and solving the problem of high smoke volume. Simultaneously, the improved flame stabilization capability also increases the thermal intensity of individual flame holes 42, resulting in higher combustion temperatures and enhanced heat exchange efficiency. The finned stainless steel flame cap provided in this embodiment of the invention forms a ring of flame holes 42 between the inner ring 2, outer ring 1, and isolation ring 5 and the bends 41 of adjacent flame hole rings 4, with the flame holes 42 tightly connected, significantly increasing the flame hole area. This provides the flame cap with sufficient flame hole area to meet the needs of high loads, solving the problem of the difficulty in achieving high heat loads with stainless steel flame caps. The finned stainless steel flame cap provided in this embodiment of the invention uses stainless steel material. While achieving the same flame stability, flame hole heat intensity, and flame hole area as the alloy copper flame cap, the use of stainless steel material results in a lower thermal conductivity than alloy copper, which can reduce heat loss and achieve further breakthroughs in ultra-high energy efficiency.

[0026] Specifically, such as Figures 1-3 As shown, the inner ring 2, the outer ring 1, the fire hole ring 4, and the isolation ring 5 are all circular.

[0027] To further improve the flame stabilization effect, in one embodiment of the present invention, the cross-sectional area of ​​the bend 41 of the flame hole ring 4 near the outer ring 1 is smaller than the cross-sectional area of ​​the bend 41 of the flame hole ring 4 near the inner ring 2. More specifically, the cross-sectional area of ​​the bend 41 refers to the area enclosed by the bend 41, so that the cross-sectional area of ​​the flame hole 42 near the outer ring 1 is smaller than the cross-sectional area of ​​the flame hole 42 near the inner ring 2. In this way, the flame hole 42 near the inner ring 2 is the main flame hole, and the flame hole 42 near the outer ring 1 is the small flame hole, which can play a role in stabilizing the flame. At the same time, the depth of the small flame hole is determined by the width of the stainless steel flame hole ring 4 (the axial direction of the flame hole 42 corresponds to the width of the flame hole ring 4), which can further enhance the flame stabilization effect of the small flame hole. In addition, since a wavy flame hole ring 4 is used, the small flame holes of the flame hole ring 4 near the outer ring 1 are connected to each other, and the mutual flame stabilization effect is also enhanced.

[0028] In one embodiment of the invention, the cross-section of the bend 41 is V-shaped, U-shaped, or arc-shaped.

[0029] like Figures 2-3As shown, in one embodiment of the present invention, the cross-sectional area of ​​the flame hole ring 4 and the isolation ring 5 gradually increases from bottom to top. Specifically, the diameter of the cross-section of the flame hole ring 4 and the isolation ring 5 gradually increases from bottom to top, making the flame hole ring 4 and the isolation ring 5 flared. This causes the axial direction of the flame hole 42 formed by the bend 41 of the flame hole ring 4 to be at an angle to the horizontal direction, forming an outward and upward inclined shape.

[0030] like Figure 2 , Figure 5 As shown, in one embodiment of the present invention, the inner ring 2 includes a first ring body 21 and a second ring body 22. The second ring body 22 extends upward from the top of the first ring body 21, and the cross-sectional area of ​​the second ring body 22 gradually increases from bottom to top. Specifically, the diameter of the cross-section of the second ring body 22 gradually increases from bottom to top. The outer ring 1 includes a third ring body 11, a fourth ring body 12, and a fifth ring body 13. The cross-sectional area of ​​the third ring body 11 gradually increases from bottom to top. Specifically, the diameter of the cross-section of the third ring body 11 gradually increases from bottom to top. The fourth ring body 12 extends outward from the top of the third ring body 11, and the fifth ring body 13 extends downward from the outer end of the fourth ring body 12. The flame hole region 3 is formed between the second ring body 22 and the third ring body 11.

[0031] In one embodiment of the present invention, the inner ring 2, the outer ring 1, the isolation ring 5, and the flame hole ring 4 are welded together as a whole, for example, by brazing, to form a complete flame cap.

[0032] In one embodiment of the present invention, the isolation ring 5 is also made of stainless steel.

[0033] The present invention also provides a burner including the aforementioned finned stainless steel burner cap. Specifically, the burner includes a furnace head with an annular fire channel, and the finned stainless steel burner cap is disposed at the top opening of the annular fire channel. A typical furnace head may include an inner annular fire channel and an outer annular fire channel, wherein the outer annular fire channel can be directly fitted with the aforementioned finned stainless steel burner cap as an outer annular burner cap. For the circular perforated inner annular fire channel, the inner ring 2 of the finned stainless steel burner cap can be closed to serve as the inner annular burner cap, for example, by providing a sealing plate in the middle of the inner ring 2 to close the gap in the middle of the inner ring 2.

[0034] The present invention also provides a gas stove, including the burner described above.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A finned stainless steel flame cap, characterized in that, It includes an outer ring (1) and an inner ring (2) made of stainless steel; the inner ring (2) is located inside the outer ring (1), and an annular fire hole area (3) is formed between the inner ring (2) and the outer ring (1). At least two stainless steel fire hole rings (4) are arranged in sequence along the radial direction of the outer ring (1) in the fire hole area (3). The surface of the fire hole ring (4) has multiple bends (41) so that the cross-section of the fire hole ring (4) is wavy. An isolation ring (5) is provided between adjacent fire hole rings (4). Fire holes (42) are formed between the bends (41) of the inner ring (2), the outer ring (1), the isolation ring (5) and the adjacent fire hole ring (4).

2. The finned stainless steel flame cap according to claim 1, characterized in that, The cross-sectional area of ​​the bend (41) of the fire hole ring (4) near the outer ring (1) is smaller than the cross-sectional area of ​​the bend (41) of the fire hole ring (4) near the inner ring (2).

3. The finned stainless steel flame cap according to claim 1, characterized in that, The cross-section of the bend (41) is V-shaped, U-shaped or arc-shaped.

4. The finned stainless steel flame cap according to any one of claims 1 to 3, characterized in that, The cross-sectional areas of the fire hole ring (4) and the isolation ring (5) gradually increase from bottom to top.

5. The finned stainless steel flame cap according to claim 4, characterized in that, The inner ring (2) includes a first ring body (21) and a second ring body (22). The second ring body (22) extends upward from the top of the first ring body (21), and the cross-sectional area of ​​the second ring body (22) gradually increases from bottom to top. The outer ring (1) includes a third ring body (11), a fourth ring body (12) and a fifth ring body (13). The cross-sectional area of ​​the third ring body (11) gradually increases from bottom to top. The fourth ring body (12) extends outward from the top of the third ring body (11), and the fifth ring body (13) extends downward from the outer end of the fourth ring body (12). The fire hole region (3) is formed between the second ring body (22) and the third ring body (11).

6. The finned stainless steel flame cap according to any one of claims 1 to 3, characterized in that, The inner ring (2), the outer ring (1), the isolation ring (5), and the fire hole ring (4) are welded together as a whole.

7. The finned stainless steel flame cap according to any one of claims 1 to 3, characterized in that, The isolation ring (5) is made of stainless steel; And / or, the inner ring (2) is provided with a sealing plate in the middle.

8. A burner, characterized in that, Including the finned stainless steel flame cap according to any one of claims 1 to 7.

9. The burner according to claim 8, characterized in that, The burner includes a furnace head, which has an annular fire channel, and the finned stainless steel burner cap is located at the top opening of the annular fire channel.

10. A gas stove, characterized in that, Includes the burner according to claim 8 or 9.

Images