Outer ring fire cover, combustor and gas stove

Abstract

The utility model relates to the technical field of kitchen utensils, and discloses an outer ring fire cover, a combustor and a gas cooker. The gas cooker comprises at least one combustor, each combustor comprises an outer ring fire cover, each outer ring fire cover is annular and is provided with a communicating cavity, a main fire circular seam and a flame stabilizing circular seam which are both communicated with the communicating cavity are further formed in each outer ring fire cover, and the main fire circular seams and the flame stabilizing circular seams are coaxially arranged; the height of an outlet of the flame stabilizing circular seam is smaller than that of an outlet of the main fire circular seam, the seam width of the main fire circular seam is D1, the seam width of the flame stabilizing circular seam is D2, and D1 is larger than D2. According to the outer ring fire cover, flames generated during gas combustion are uniform and stable, and the problem of flame separation can be avoided. According to the combustor and the gas cooker, the outer ring fire cover 10 is adopted, flames generated by combustion are uniform and stable, and the problem of flame separation can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of kitchen utensils technology, and in particular to an outer ring burner cap, a burner, and a gas stove. Background Technology

[0002] Gas stoves are essential kitchen cooking appliances for daily household use. A gas stove includes a burner, which includes a burner cap. The burner cap has flame holes. The mixture of gas and air is discharged from the flame holes and burned. The combustion stability of the mixture at the flame holes affects the user experience.

[0003] Because the gas supplied by the collective has unstable composition and pressure, it can easily cause unstable combustion in gas stoves. When the gas supply pressure is too high, the flow rate of the gas mixture out of the burner holes will increase, leading to problems such as flame lift-off and unstable combustion, resulting in a poor user experience. Utility Model Content

[0004] The first objective of this invention is to provide an outer ring flame cap that produces a uniform and stable flame during gas combustion and avoids flame lift-off problems.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The outer ring flame cap is annular and has a communicating cavity. The outer ring flame cap is also provided with a main flame ring slit and a flame stabilizing ring slit, both of which communicate with the communicating cavity. The main flame ring slit and the flame stabilizing ring slit are coaxially arranged. The height of the outlet of the flame stabilizing ring slit is lower than the height of the outlet of the main flame ring slit. The width of the main flame ring slit is D1, and the width of the flame stabilizing ring slit is D2, where D1 > D2.

[0007] As an alternative, the upper side of the outer ring flame cap has a conical surface, and the cross-section of the conical surface gradually decreases from bottom to top. The flame stabilizing ring seam is arranged around the outer periphery of the main flame ring seam, and the outlet of the flame stabilizing ring seam and the outlet of the main flame ring seam both extend to the conical surface.

[0008] As an alternative, the main fire ring slot extends obliquely outward in an upward direction; and / or

[0009] Along the bottom-up direction, the flame-stabilizing annular slit extends obliquely outward.

[0010] As an optional solution, the width of the main flame ring seam is 1.5mm≤D1≤3mm, and the width of the flame stabilizing ring seam is 0.5mm≤D2≤2mm.

[0011] As an optional solution, a spacer is provided between the main flame ring seam and the flame stabilizing ring seam. Along the arrangement direction of the outlet of the main flame ring seam and the outlet of the flame stabilizing ring seam, the width of the spacer is D3, and the ratio of D3 to D2 is 0.8-1.2.

[0012] As an optional configuration, the depth of the main flame ring slot is W1, and the depth of the flame stabilizing ring slot is W2, where W1 is greater than W2; and / or

[0013] The depth of the main flame ring gap is W1, and the depth of the flame stabilizing ring gap is W2, wherein:

[0014] As an alternative, the width of the main fire ring slit gradually increases along the gas flow direction.

[0015] As an optional solution, the included angle between the two sidewalls of the main fire ring seam is α, where 1°≤α≤5°.

[0016] The second objective of this invention is to provide a burner that, by setting the aforementioned outer ring flame cap, produces a uniform and stable flame and avoids flame lift-off problems.

[0017] To achieve this objective, the present invention adopts the following technical solution:

[0018] The burner includes a burner head, a gas distribution seat, and an outer ring flame cover. The gas distribution seat covers the burner head, and the outer ring flame cover covers the gas distribution seat. An outer ring mixing channel is provided inside the burner head, and a gas distribution channel is provided on the gas distribution seat. The outer ring mixing channel, the gas distribution channel, and the communicating cavity are connected.

[0019] The third objective of this utility model is to provide a gas stove that, by setting the aforementioned burner, achieves stable combustion and provides a good user experience.

[0020] To achieve this objective, the present invention adopts the following technical solution:

[0021] A gas stove, including at least one of the aforementioned burners.

[0022] The beneficial effects of this utility model are:

[0023] The outer ring flame cap of this invention features an annular structure for both the main flame ring slit and the flame stabilizing ring slit, resulting in more continuous and uniform gas discharge, which improves the uniformity and stability of combustion. Because the width of the main flame ring slit is greater than that of the flame stabilizing ring slit, the main flame at the main flame ring slit is thicker and more stable. Furthermore, because the outlet of the flame stabilizing ring slit is lower than the outlet of the main flame ring slit, the stabilizing flame at the flame stabilizing ring slit is located at the root of the main flame and intersects with it as much as possible. This not only expands the overall flame area but also stabilizes the main flame, significantly reducing flame lift-off caused by instability in gas supply composition and pressure.

[0024] The burner of this invention, by adopting the aforementioned outer ring flame cap, produces a uniform and stable flame during combustion and can avoid flame lift-off problems.

[0025] The gas stove of this utility model, by setting the above-mentioned burner, has stable combustion and a good user experience. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the burner provided in a specific embodiment of the present invention;

[0027] Figure 2 This is an exploded view of the burner provided in a specific embodiment of this utility model;

[0028] Figure 3 This is a longitudinal sectional view of the burner provided in a specific embodiment of this utility model;

[0029] Figure 4 In one embodiment Figure 3 Enlarged view of point A in the image;

[0030] Figure 5 In another embodiment Figure 3 Enlarged view of point A in the image.

[0031] In the picture:

[0032] 10. Outer ring flame cap; 11. Connecting cavity; 12. Main flame ring seam; 13. Flame stabilizing ring seam; 14. Conical surface; 15. Spacer; 16. First sidewall; 17. Second sidewall;

[0033] 20. Inner ring flame cap; 21. Inner ring flame hole;

[0034] 30. Burner head; 31. Outer ring mixing channel; 311. Outer ring gas outlet; 32. Inner ring mixing channel;

[0035] 40. Gas distribution seat; 41. Gas distribution channel; 42. Air inlet. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] This embodiment provides an outer ring burner cap, a burner, and a gas stove. The gas stove includes at least one burner, and each burner is equipped with a nozzle for communication with a gas source. Figures 1-3As shown, the burner includes a burner head 30, a gas distribution seat 40, an inner ring burner cap 20, and an outer ring burner cap 10. The gas distribution seat 40 contains an outer ring mixing channel 31 and an inner ring mixing channel 32. The inlet of the outer ring mixing channel 31 connects to an outer ring nozzle, and the outer ring outlet 311 of the outer ring mixing channel 31 extends to the upper side of the burner head 30. The inlet of the inner ring mixing channel 32 connects to an inner ring nozzle, and the inner ring outlet of the inner ring mixing channel 32 also extends to the upper side of the burner head 30. The gas distribution seat 40 contains a gas distribution channel 41, which has an inlet 42. The gas distribution seat 40 covers the burner head 30 so that the inlet 42 is opposite to the outer ring outlet 311, thereby connecting the outer ring mixing channel 31 with the gas distribution channel 41. The outer ring burner cap 10 is annular and has a communicating cavity 11. The outer ring burner cap 10 also has a main flame ring seam 12 and a flame stabilizing ring seam 13, which are coaxially arranged and both communicate with the communicating cavity 11. The outer ring burner cap 10 covers the gas distribution seat 40, thereby connecting the communicating cavity 11 with the gas distribution channel 41. In other words, the outer ring mixing channel 31, the gas distribution channel 41, and the communicating cavity 11 are sequentially connected. The inner ring burner cap 20 covers the burner head 30, and the multiple inner ring flame holes 21 on the inner ring burner cap 20 are all connected with the inner ring gas outlet.

[0041] like Figure 3 As shown, the working principle of the burner is as follows: the outer ring nozzle injects gas into the outer ring mixing channel 31. During this process, primary air is injected into the outer ring mixing channel 31. After the primary air and gas are mixed in the outer ring mixing channel 31, they enter the gas distribution channel 41. The mixed gas flows and mixes further in the gas distribution channel 41 before entering the connecting cavity 11. Finally, it is discharged from the main flame ring slit 12 and the flame stabilizing ring slit 13 and burned. At the same time, the inner ring nozzle injects gas into the inner ring mixing channel 32. During this process, primary air is injected into the inner ring mixing channel 32. After the primary air and gas are mixed in the inner ring mixing channel 32, they enter the inner ring burner cap 20 and are finally discharged from each inner ring burner hole 21 and burned.

[0042] In this embodiment, as Figure 2 As shown, four outer ring gas outlets 311 are provided and evenly distributed along the circumference of the burner head 30. Correspondingly, four air inlets 42 are provided on the gas distribution seat 40, each air inlet 42 corresponding to one outer ring gas outlet 311. That is to say, the mixed gas in the outer ring mixing channel 31 can enter the gas distribution channel 41 from four positions, which is conducive to the uniform distribution of gas along the circumference. In other embodiments, the number of outer ring gas outlets 311 and air inlets 42 can be flexibly set according to needs, and no specific limitation is made here.

[0043] like Figure 3 and Figure 4As shown, the height of the outlet of the flame stabilizing ring slit 13 is lower than the height of the outlet of the main flame ring slit 12. The width of the main flame ring slit 12 is D1, and the width of the flame stabilizing ring slit 13 is D2, where D1 > D2. Since both the main flame ring slit 12 and the flame stabilizing ring slit 13, which are used by the outer ring burner cap 10 for discharging gases for combustion, are constructed in annular shape, the gas is discharged more continuously and evenly along the circumference, which is beneficial to improving the uniformity and stability of combustion. Since the width of the main flame ring slit 12 is greater than the width of the flame stabilizing ring slit 13, the main flame at the main flame ring slit 12 is more robust and stable. Since the outlet of the flame stabilizing ring slit 13 is lower than the outlet of the main flame ring slit 12, the flame stabilizing flame at the flame stabilizing ring slit 13 is located at the root of the main flame and intersects with the main flame as much as possible. This not only expands the overall flame area but also stabilizes the main flame, thereby greatly reducing the flame lift-off phenomenon caused by instability in the gas supply composition and gas pressure. The burner and gas stove of this embodiment, by adopting the outer ring burner cap 10 described above, produce a uniform and stable flame during combustion and can avoid flame lift-off problems.

[0044] In this embodiment, the connecting cavity 11 is annular and is located on the upper side of the outer ring flame cap 10. The outlet of the flame stabilizing ring slit 13 and the outlet of the main flame ring slit 12 both extend to the upper side of the outer ring flame cap 10.

[0045] like Figure 4 As shown, the upper side of the outer ring flame cap 10 has a conical surface 14. The cross-section of the conical surface 14 gradually decreases from bottom to top. A flame-stabilizing ring slit 13 is arranged around the outer periphery of the main flame ring slit 12, and both the outlet of the flame-stabilizing ring slit 13 and the outlet of the main flame ring slit 12 extend to the conical surface 14. This arrangement ensures that the outlet of the flame-stabilizing ring slit 13 is lower than the outlet of the main flame ring slit 12, thereby ensuring that the ring slit fire at the flame-stabilizing ring slit 13 is located in the root region of the main flame.

[0046] like Figure 4 As shown, the main flame ring slit 12 extends outward at an angle from bottom to top, and the flame stabilizing ring slit 13 extends outward at an angle from bottom to top. This arrangement ensures that both the main flame of the main flame ring slit 12 and the ring slit flame of the flame stabilizing ring slit 13 are angled outward, thus guaranteeing a larger flame area for the burner. Furthermore, it ensures that the ring slit flame intersects with the main flame as much as possible, thereby guaranteeing a stable flame effect on the main flame and improving the combustion stability of the burner. Optionally, in this embodiment, the extension direction of the main flame ring slit 12 is parallel to the angled direction of the flame stabilizing ring slit 13. In other embodiments, the extension direction of the main flame ring slit 12 and the angled direction of the flame stabilizing ring slit 13 may have a certain angle, which is not specifically limited here.

[0047] like Figure 4As shown, the width of the main flame ring slit 12 is 1.5mm ≤ D1 ≤ 3mm. Optionally, the dimension of D1 can be 1.5mm, 2mm, 2.5mm, 3mm, etc. The width of the flame stabilizing ring slit 13 is 0.5mm ≤ D2 ≤ 2mm. Optionally, the dimension of D2 can be 0.5mm, 1mm, 1.5mm, 2mm, etc. In this embodiment, the width D1 of the main flame ring slit 12 is 2mm, and the width D2 of the flame stabilizing ring slit 13 is 1mm.

[0048] like Figure 4 As shown, a spacer 15 is provided between the main flame ring slit 12 and the flame stabilizing ring slit 13. Along the arrangement direction of the outlets of the main flame ring slit 12 and the flame stabilizing ring slit 13 (i.e., the width direction of the main flame ring slit 12 and the width direction of the flame stabilizing ring slit 13), the width of the spacer 15 is D3, and the ratio of D3 to D2 is 0.8-1.2. This arrangement ensures that the distance between the flame stabilizing ring slit 13 and the main flame ring slit 12 is moderate. It avoids the problems of incomplete combustion and increased flue gas caused by secondary air competition due to the two slits being too close, and also avoids the problem of poor flame stabilization due to the flame stabilizing flame not intersecting with the main flame due to the distance being too far, thus ensuring the overall combustion completeness and stability of the burner. Optionally, the ratio of D3 to D2 can be 0.8, 0.9, 1, 1.1, 1.2, etc.

[0049] In some embodiments, such as Figure 4 As shown, along the direction of gas flow ( Figure 4 (As indicated by the dotted arrow in the diagram), the width of the main flame ring slit 12 remains unchanged, as does the width of the flame stabilizing ring slit 13. Specifically, the depth of the main flame ring slit 12 is W1, and the depth of the flame stabilizing ring slit 13 is W2, where W1 is greater than W2. This structural arrangement increases the flow path length of the combustion gas through the main flame ring slit 12, thereby reducing the gas velocity at the outlet of the main flame ring slit 12. This effectively mitigates flame lift-off from the main flame and improves the combustion stability of the burner.

[0050] In this embodiment, This size setting ensures that the width-to-depth ratio of the main flame ring slit 12 and the flame stabilizing ring slit 13 is consistent, so that the friction resistance of the gas mixture entering the main flame ring slit 12 and the flame stabilizing ring slit 13 is approximately equal. This results in the gas flow velocity at the outlet of the main flame ring slit 12 being more consistent with the gas flow velocity at the outlet of the flame stabilizing ring slit 13, thereby ensuring that the flame has a better combustion state.

[0051] In some embodiments, such as Figure 5 As shown, along the direction of gas flow ( Figure 5As indicated by the dashed arrow in the diagram, the width of the main flame ring slit 12 gradually increases. This further reduces the flow velocity of the mixed gas within the main flame ring slit 12, thereby reducing flame lift-off and improving combustion stability. Optionally, in this embodiment, the included angle between the two sidewalls of the main flame ring slit 12 (i.e., the first sidewall 16 and the second sidewall 17) is α, where 1° ≤ α ≤ 5°. Specifically, α can be 1°, 2°, 3°, 4°, or 5°.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, based on the concept of this utility model, there will be changes in the specific implementation methods and application scope. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An outer ring flame cap, characterized in that, The outer ring flame cap is annular and has a communicating cavity (11). The outer ring flame cap is also provided with a main flame ring slit (12) and a flame stabilizing ring slit (13) that are both communicating with the communicating cavity (11). The main flame ring slit (12) and the flame stabilizing ring slit (13) are coaxially arranged. The height of the outlet of the flame stabilizing ring slit (13) is lower than the height of the outlet of the main flame ring slit (12). The width of the main flame ring slit (12) is D1, and the width of the flame stabilizing ring slit (13) is D2, where D1 > D2.

2. The outer ring flame cap as described in claim 1, characterized in that, The upper side of the outer ring flame cap has a conical surface (14). The cross-section of the conical surface (14) gradually decreases from bottom to top. The flame stabilizing ring slit (13) is arranged around the outer periphery of the main flame ring slit (12), and the outlet of the flame stabilizing ring slit (13) and the outlet of the main flame ring slit (12) both extend to the conical surface (14).

3. The outer ring flame cap as described in claim 2, characterized in that, Along an upward direction, the main fire ring slit (12) extends obliquely outward; and / or Along the bottom-up direction, the flame stabilizing annular slit (13) extends obliquely outward.

4. The outer ring flame cap as described in any one of claims 1-3, characterized in that, The width of the main flame ring seam (12) is 1.5mm≤D1≤3mm, and the width of the flame stabilizing ring seam (13) is 0.5mm≤D2≤2mm.

5. The outer ring flame cap as described in any one of claims 1-3, characterized in that, A spacer (15) is provided between the main fire ring seam (12) and the flame stabilizing ring seam (13). Along the arrangement direction of the outlet of the main fire ring seam (12) and the outlet of the flame stabilizing ring seam (13), the width of the spacer (15) is D3, and the ratio of D3 to D2 is 0.8-1.

2.

6. The outer ring flame cap as described in any one of claims 1-3, characterized in that, The depth of the main flame ring slit (12) is W1, and the depth of the flame stabilizing ring slit (13) is W2, where W1 is greater than W2; and / or The depth of the main flame ring seam (12) is W1, and the depth of the flame stabilizing ring seam (13) is W2, wherein:

7. The outer ring flame cap as described in any one of claims 1-3, characterized in that, Along the direction of gas flow, the width of the main fire ring slit (12) gradually increases.

8. The outer ring flame cap as described in claim 7, characterized in that, The included angle between the two sidewalls of the main fire ring seam (12) is α, where 1°≤α≤5°.

9. A burner, characterized in that, The device includes a burner head (30), a gas distribution seat (40), and an outer ring flame cover as described in any one of claims 1-8. The gas distribution seat (40) covers the burner head (30), and the outer ring flame cover covers the gas distribution seat (40). An outer ring mixing channel (31) is provided inside the burner head (30), and a gas distribution channel (41) is provided on the gas distribution seat (40). The outer ring mixing channel (31), the gas distribution channel (41), and the connecting cavity (11) are connected.

10. A gas stove, characterized in that, It includes at least one burner as described in claim 9.

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