Burner structure, burner and gas stove

Abstract

This invention discloses a burner cap structure, a burner, and a gas stove. The burner cap structure has annular groove-shaped flame holes extending circumferentially along its length. The burner cap structure also includes at least one baffle positioned corresponding to the annular groove-shaped flame holes. The baffle closes the corresponding annular groove-shaped flame holes along the circumferential direction of the burner cap structure, thus restricting the flame transmission between the annular groove-shaped flame holes on both sides of the baffle. With this arrangement, since no gas is ejected from the annular groove-shaped flame holes at the baffle positions, the flame burning on the annular groove-shaped flame holes is interrupted during transmission, thereby reducing the flame transmission speed. This allows the flame transmission of the annular groove-shaped flame holes to be synchronized as much as possible with the flame transmission of the non-annular groove-shaped flame holes on the burner cap structure, preventing deflagration at the non-annular groove-shaped flame hole positions.

Description

Technical Field

[0001] This invention relates to the field of stove technology, and in particular to a burner structure, a burner, and a gas stove. Background Technology

[0002] Gas stoves are among the most frequently used appliances in the kitchen. As the combustion part of a gas stove, the size of the flame emitted from the burner is an important factor that determines the user experience.

[0003] Burners are generally equipped with a flame cap structure and a combustion base. The flame cap structure covers the combustion base, so that the two form a gas-containing cavity with a certain space. The gas is injected from the nozzle, enters the gas-containing cavity through the ejector tube, and is then injected through the flame holes opened on the flame cap structure to form a flame to heat the cookware.

[0004] Existing burner cap structures generally have two sets of burner holes, including annular groove burner holes and non-annular groove burner holes. The flame transmission speed of the annular groove burner holes is faster than that of the non-annular groove burner holes. When the flame transmission of the annular groove burner holes is completed, the area where the flame transmission of the non-annular groove burner holes has not yet been completed continues to emit gas. When the gas accumulated in this area is ignited by the flame of the adjacent annular burner holes, it is easy to cause deflagration, thus affecting the user experience. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect that the flame transmission speed of the annular groove flame holes in the existing flame cap structure is relatively faster, which leads to the easy occurrence of deflagration at the non-annular groove flame holes. The present invention provides a flame cap structure, a burner and a gas stove.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A flame cap structure is provided, wherein adjacent annular groove flame holes and non-annular groove flame holes are provided on the flame cap structure, and the annular groove flame holes and non-annular groove flame holes are all extended along the circumferential direction of the flame cap structure and are arranged sequentially along the radial direction of the flame cap structure.

[0008] The flame cap structure is also provided with at least one partition, which is disposed at the position of the annular groove flame hole. The partition closes the corresponding position of the annular groove flame hole along the circumferential direction of the flame cap structure to restrict the flame from being transmitted between the annular groove flame hole on both sides of the partition.

[0009] By providing at least one baffle on the burner cap structure, these baffles close the annular groove-shaped flame holes in the circumferential direction of the burner cap structure. The gas inside the burner cap structure is then blocked at the location of the baffle, preventing it from being ejected from that location. With this design, since no gas is ejected from the annular groove-shaped flame holes at the baffle locations, when the gas ejected from the unbaffled locations is ignited, the flame propagation is interrupted at the baffle locations, thus reducing the flame propagation speed of the annular groove-shaped flame holes. This allows the flame propagation of the annular groove-shaped flame holes to be synchronized as much as possible with the flame propagation of the non-annular groove-shaped flame holes on the burner cap structure, thereby preventing deflagration in the non-annular groove-shaped flame hole locations on the burner cap structure.

[0010] Preferably, the extension length of the partition portion that closes the annular groove-shaped flame hole along the circumferential direction of the flame cap structure is b, and the radial width of the annular groove-shaped flame hole on the flame cap structure is c; wherein, 4c < b.

[0011] By ensuring that the extension length of the baffle is at least four times greater than the radial width c of the annular groove flame hole, the baffle has a relatively large extension length that seals the annular groove flame hole on the burner cap structure. This allows the combustion gas inside the burner cap structure to be better blocked at the baffle position. Consequently, when the flame is being transmitted, the baffle can better isolate the flame on both sides, more effectively limiting the mutual transmission of flame between the annular groove flame hole and the baffle.

[0012] Preferably, the flame cap structure is further provided with a flame transmission channel extending in the radial direction of the flame cap structure, and in the circumferential direction of the flame cap structure, one of the partitions is provided at the corresponding position of the flame transmission channel and the annular groove flame hole.

[0013] With this configuration, the flame cap structure can ignite the gas ejected from both the annular groove flame holes and the non-annular groove flame holes using the flame transmission channel, thus forming a flame. Therefore, the flame transmission channel serves as the initial position for gas ignition. By placing one of the baffles at the corresponding position between the flame transmission channel and the annular groove flame hole, the gas at the annular groove flame hole is blocked at the initial position of gas ignition. Through the blocking of the baffle, the annular groove flame hole is ignited later than the non-annular groove flame hole at the position of the flame transmission channel. This ensures that the flame transmission channel ignites the gas ejected from the non-annular groove flame hole first, and then the flame from the non-annular groove flame hole ignites the gas ejected from the nearby annular groove flame hole.

[0014] In other words, by setting a baffle at the position of the annular groove flame hole corresponding to the flame transmission channel, the baffle prevents the gas in the annular groove flame hole from being ignited by the flame transmission channel, so that the ignition time of the annular groove flame hole is later than that of the non-annular groove flame hole. This allows the flame transmission of the annular groove flame hole to be kept as synchronized as possible with the flame transmission of the non-annular groove flame hole on the flame cap structure, reducing the probability of deflagration.

[0015] Preferably, in the circumferential direction of the flame-transfer channel, the extension length of the flame-transfer channel is smaller than the extension length of the corresponding partition.

[0016] With this relative size setting, when the gas ejected from the flame hole on the flame cap structure is ignited by the flame transmission channel, the extension length of the baffle is greater than the extension length of the flame transmission channel. As the flame is transmitted from the flame transmission channel to the annular flame hole, the baffle can block the gas at the location where the flame is transmitted, preventing the annular flame hole from being ignited by the flame transmitted from the flame transmission channel, thereby delaying the ignition time of the corresponding annular flame hole.

[0017] Preferably, the fire transmission channel is a through hole penetrating the flame cap structure, and the end of the fire transmission channel away from the central axis of the flame cap structure is located above the corresponding partition.

[0018] This configuration allows for more effective ignition of the gas ejected from the flame holes on the flame cap structure via the ignition channel. Simultaneously, positioning the end of the ignition channel above the corresponding baffle, i.e., above the annular groove flame hole, ensures the basic function of the ignition channel while preventing the annular groove flame hole from being ignited by the ignition channel. It also prevents interference between the annular groove flame hole and non-annular groove flame holes or flame stabilizers connected to the ignition channel, thus avoiding disruption to the normal configuration of the annular groove flame hole.

[0019] Preferably, the partition is connected to the inner wall of the flame cap structure, and at the location where the partition is provided on the flame cap structure, the outer surface of the partition is relatively concave to the outer surface of the flame cap structure.

[0020] This design allows the outer surface of the baffle to fit with the annular groove-shaped flame hole to form a blind hole structure. While ensuring that the baffle can block the gas, it also ensures that the baffle is not visible from the outside of the flame cap structure, thus maintaining the overall aesthetics of the flame cap structure. At the same time, the blind hole structure allows any overflowing liquid at the baffle location to be guided to both sides, effectively reducing the occurrence of liquid stagnation.

[0021] Preferably, a groove is also provided on the outer wall of the flame cap structure. The groove is located below the end of the flame transmission channel away from the central axis of the flame cap structure and is connected to the annular groove-shaped flame hole at the corresponding position.

[0022] With this configuration, the groove on the outer wall of the flame cap structure is connected to the corresponding annular flame hole. When there is overflowing liquid in the flame transmission channel, the groove can be used to collect the overflowing liquid. Then, the annular flame hole connected to the groove forms a siphon effect, allowing the overflowing liquid to be quickly guided to the surrounding area, thereby reducing the retention or backflow of the overflowing liquid and preventing the vent in the flame transmission hole from becoming blocked.

[0023] Preferably, in the circumferential direction of the flame cap structure, the extension length of the groove is greater than the inner diameter of the flame transmission channel, and the extension length of the groove is less than the extension length of the corresponding partition.

[0024] This design increases the inner diameter of the flame transmission channel, the extension length of the groove, and the extension length of the baffle in sequence. On the one hand, when the flame is transmitted from the flame transmission channel to the annular flame hole, the baffle can block the gas at the point where the flame is transmitted, preventing the annular flame hole from being ignited by the flame transmitted from the flame transmission channel. On the other hand, the overflow liquid at the flame transmission channel can be completely collected by the groove, and the annular flame hole can effectively form a siphon effect to guide the overflow liquid, preventing it from flowing directly into the interior of the flame cap structure through the groove structure.

[0025] Preferably, the radial width of the annular groove-shaped flame hole on the flame cap structure is less than or equal to 50% of the diameter of the overflow droplet.

[0026] Whether the overflowing droplet located at the annular groove flame hole will flow downwards from the gap of the annular groove flame hole depends on the difference between the gravity and surface tension of the overflowing droplet. If the tension of the overflowing droplet is less than its own gravity, then gravity can overcome the surface tension and make the overflowing droplet flow downwards, avoiding stagnation at the annular groove flame hole.

[0027] The surface tension of a droplet is positively correlated with its actual diameter; the smaller the actual diameter, the lower the surface tension. Therefore, by setting these dimensions, the radial width of the annular groove-shaped flame hole on the flame cap structure is less than or equal to 50% of the overflow droplet diameter. By making the annular groove-shaped flame hole smaller than the overflow droplet diameter, the overflow droplet cannot form a natural hemisphere. The actual diameter of the overflow droplet used to calculate the surface tension is determined by the radial width of the annular groove-shaped flame hole, ensuring that the surface tension can be overcome by the droplet's gravity.

[0028] Preferably, the radial width of the annular groove-shaped flame hole on the flame cap structure is less than or equal to 1.15 mm;

[0029] And / or, the depth dimension of the annular groove-shaped flame hole on the flame cap structure is greater than the maximum thickness dimension of the flame cap structure at the location where the annular groove-shaped flame hole is provided;

[0030] And / or, the radial width dimension of the annular groove-shaped flame hole on the flame cap structure is greater than 0.6 times the maximum thickness dimension of the flame cap structure at the location where the annular groove-shaped flame hole is provided.

[0031] With this size setting, when there is overflowing liquid at the partition location, the surface tension of most of the liquid is less than its own weight, allowing the liquid to be quickly guided to both sides, thereby more effectively reducing the occurrence of liquid stagnation.

[0032] The diameter of the overflow droplets is usually in the range of 2.3-4.3 mm. By making the radial width of the annular groove-shaped flame hole less than or equal to 1.15 mm, it is ensured that the radial width of the annular groove-shaped flame hole is less than or equal to 50% of the smallest overflow droplet, so that the surface tension can be overcome by the weight of the droplet and the overflow droplet at the annular groove-shaped flame hole can flow out quickly.

[0033] Preferably, the outer wall of the flame cap structure through which the annular flame hole passes is an inclined surface, and the flame transmission channel passes through the inclined surface at its top in the vertical direction.

[0034] By setting the outer wall of the burner cap structure as an inclined surface, the flame formed on the outer wall of the burner cap structure can better heat the pot above. At the same time, the fire transmission channel extends through the inclined surface at the top of its vertical direction. When the pot overflows, the top of the fire transmission channel is used to block the overflowing liquid, preventing the overflowing liquid from directly entering the interior of the fire transmission channel from above, thereby preventing blockage of the vent hole in the fire transmission hole.

[0035] Preferably, the flame cap structure is further provided with a plurality of connecting ribs. In the circumferential direction of the flame cap structure, the plurality of connecting ribs are spaced apart at the positions of the annular groove-shaped flame holes, and the spacing between adjacent connecting ribs is greater than the extension length of the connecting ribs.

[0036] By periodically installing several connecting ribs at the locations of the annular groove-shaped flame holes, the flame cap structure is connected circumferentially, ensuring that the flame cap structure will not break at the locations of the annular groove-shaped flame holes. Furthermore, the spacing between adjacent connecting ribs must be greater than the circumferential extension length of the connecting ribs, thus preventing the connecting ribs from obstructing flame transmission through the annular groove-shaped flame holes. In addition, by further ensuring that the spacing between adjacent connecting ribs is greater than the extension length of the connecting ribs, it is prevented that excessively large connecting ribs would cause liquid to overflow with a tension exceeding its own weight, thereby preventing liquid from stagnating in the annular groove-shaped flame hole between adjacent connecting ribs.

[0037] Preferably, there are multiple partitions, and the multiple partitions are spaced apart in the circumferential direction of the flame cap structure.

[0038] By arranging multiple baffles at intervals in the circumferential direction of the burner cap structure, the flame transmission of the annular groove burner holes is blocked by multiple baffles. The gas ejected from the annular groove burner holes can only be ignited through the corresponding non-annular groove burner holes, thereby making the flame transmission of the annular groove burner holes and the flame transmission of the non-annular groove burner holes more synchronized, thus more effectively preventing deflagration in the burner cap structure at the non-annular groove burner hole positions.

[0039] A burner comprising:

[0040] Combustion base;

[0041] As described above, the flame cap structure is disposed on the combustion base and cooperates with the combustion base to form a gas receiving cavity.

[0042] By setting the burner cap structure as described above on the combustion base of the burner, the gas is stored in the gas-containing cavity formed by the combination of the burner cap structure and the combustion base. This facilitates the ejection of the stored gas through the flame holes on the burner cap structure to form a flame.

[0043] A gas stove, the gas stove comprising a burner as described above.

[0044] By applying the burner described above to gas stoves, the defect of easy deflagration in the non-annular groove burner holes of the burner cap structure in gas stoves can be effectively solved.

[0045] The positive and progressive effects of this invention are as follows:

[0046] By providing at least one baffle on the burner cap structure, these baffles close the annular groove-shaped flame holes in the circumferential direction of the burner cap structure. The gas inside the burner cap structure is then blocked at the location of the baffle, preventing it from being ejected from that location. With this design, since no gas is ejected from the annular groove-shaped flame holes at the baffle locations, when the gas ejected from the unbaffled locations is ignited, the flame propagation is interrupted at the baffle locations, thus reducing the flame propagation speed of the annular groove-shaped flame holes. This allows the flame propagation of the annular groove-shaped flame holes to be synchronized as much as possible with the flame propagation of the non-annular groove-shaped flame holes on the burner cap structure, thereby preventing deflagration in the non-annular groove-shaped flame hole locations on the burner cap structure. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the overall front structure of the flame cap structure in one embodiment of the present invention.

[0048] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle.

[0049] Figure 3 This is a schematic diagram of the overall rear structure of the flame cap structure in one embodiment of the present invention.

[0050] Figure 4 for Figure 3 A magnified schematic diagram of part B in the middle section.

[0051] Figure 5 This is a top view schematic diagram of the overall structure of the flame cap structure in one embodiment of the present invention.

[0052] Figure 6 for Figure 5 A magnified schematic diagram of part C in the middle.

[0053] Figure 7 This is a cross-sectional view of the flame cover structure at the partition position in one embodiment of the present invention.

[0054] Figure 8 for Figure 7 A magnified schematic diagram of part D in the middle section.

[0055] Explanation of reference numerals in the attached figures:

[0056] Flame cap structure 10, circumferential direction L, radial direction N, thickness h

[0057] 11-shaped annular slotted fire hole, radial width c, depth d

[0058] Cylindrical fire hole 12

[0059] Fire transmission channel 13

[0060] Partition 14, extension length dimension b

[0061] Groove 15

[0062] Connecting rib 16 Detailed Implementation

[0063] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," and "radial," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0066] This embodiment provides a gas stove, which includes a burner with a combustion base. The combustion base has an inner ring burner cap and an outer ring burner cap, which cooperate with the inner and outer ring burner caps to form an inner ring gas receiving cavity and an outer ring gas receiving cavity, respectively. Gas enters the inner and outer ring gas receiving cavities through injectors. Gas in the inner ring gas receiving cavity is ejected through flame holes on the inner ring burner cap, forming an inner ring flame in conjunction with an ignition needle. Gas in the outer ring gas receiving cavity is ejected through flame holes on the outer ring burner cap, forming an outer ring flame under the ignition of the inner ring flame. This embodiment mainly involves the structure of the outer ring burner cap; the structure of the inner ring burner cap can adopt existing structures and will not be described further. It should be noted that the burner cap structure 10 described below refers to the outer ring burner cap of the burner.

[0067] like Figure 1 and Figure 2 As shown, an annular groove extends along the circumferential direction L of the flame cap structure 10 on its surface. Some flame holes on the flame cap structure 10 are located in the annular groove to form an annular groove-shaped flame hole 11. At the same time, cylindrical flame holes 12 are also spaced along the circumferential direction L of the flame cap structure. The annular groove-shaped flame holes 11 and the cylindrical flame holes 12 are arranged sequentially along the radial direction N of the flame cap structure 10. Specifically, in this embodiment, the cylindrical flame holes 12 are arranged relatively close to the center of the flame cap structure 10, while the annular groove-shaped flame holes 11 are arranged relatively close to the outer side of the flame cap structure 10.

[0068] The cylindrical flame hole 12 and the annular groove flame hole 11 are both inserted into the flame cap structure 10, and the outer wall of the flame cap structure 10 through which the cylindrical flame hole 12 and the annular groove flame hole 11 are inserted is an inclined surface. Figure 3 and Figure 5 As shown, there are multiple cylindrical flame holes 12 arranged in a ring array on the burner cap structure 10. There are two sets of annular groove flame holes 11, both of which are annular structures. The two sets of annular groove flame holes 11 are spaced apart, and the central axis of the two annular groove flame holes 11 coincides with the central axis of the burner cap structure 10. When the burner cap structure 10 is fitted onto the combustion base of the burner, a gas receiving cavity is formed between the burner cap structure 10 and the combustion base. The gas in the gas receiving cavity is ejected through the cylindrical flame holes 12 and the annular groove flame holes 11, and together they form an outer ring flame under the ignition of the inner ring flame.

[0069] like Figure 3 and Figure 4As shown, the burner cap structure 10 is also provided with a baffle 14, which is correspondingly positioned at the location of the annular groove-shaped flame hole 11. The baffle 14 closes the corresponding annular groove-shaped flame hole 11 along the circumferential direction L of the burner cap structure to restrict the flame transmission between the annular groove-shaped flame hole 11 on both sides of the baffle 14. By providing the baffle 14, the gas inside the burner cap structure 10, i.e., the gas inside the gas receiving cavity, is blocked at the location where the baffle 14 is provided, thereby preventing the gas from being ejected from the location where the baffle 14 is provided.

[0070] The reason for this arrangement is that the annular groove-shaped flame hole 11 and the cylindrical flame hole 12 provided on the flame cap structure 10 have different flame propagation speeds when the gas is ejected through these two types of flame holes in the ignition state. Since the annular groove-shaped flame hole 11 is located in the annular groove, the annular groove has a gas concentration effect, and the gas concentration in the annular groove is relatively higher than in other open areas, which makes the flame propagation speed of the annular groove-shaped flame hole 11 greater than that of the cylindrical flame hole 12. In this embodiment, since no gas is ejected from the annular groove-shaped flame hole 11 at the location where the baffle 14 is provided, when the gas ejected from the annular groove-shaped flame hole 11 at the location where the baffle 14 is not provided is ignited into a flame, the flame transmission is interrupted at the location of the baffle 14 during the transmission process. This reduces the flame transmission speed of the annular groove-shaped flame hole 11, thereby allowing the flame transmission of the annular groove-shaped flame hole 11 to remain as synchronized as possible with the flame transmission of the cylindrical flame hole 12. This prevents the annular groove-shaped flame hole 11 from igniting first, causing the flame to surround the cylindrical flame hole 12 and ignite the unignited gas at the cylindrical flame hole 12, resulting in deflagration at the location of the cylindrical flame hole 12. In other alternative embodiments, the cylindrical flame hole 12 can also adopt other non-annular groove-shaped flame hole structures, and the flame transmission speed of the annular groove-shaped flame hole 11 is also greater than that of the non-annular groove-shaped flame hole.

[0071] It should be noted that the setting of the baffle 14 needs to meet certain conditions, namely, when the flame is transmitted corresponding to the annular groove-shaped flame hole 11, the baffle 14 can interrupt the transmitted flame at the position of the baffle 14. Specifically, this embodiment provides a preferred setting, such as... Figure 2 and Figure 4As shown, the extension length of the blocking part 14 along the circumferential direction L of the burner cap structure to close the annular groove-shaped flame hole 11 is the extension length b of the blocking part, and the radial width of the annular groove-shaped flame hole 11 on the burner cap structure 10 is c; where 4c < b < 10c. By ensuring that the extension length of the blocking part 14 is at least four times the radial width c of the annular groove-shaped flame hole 11, the extension length of the blocking part 14 sealing the annular groove-shaped flame hole 11 on the burner cap structure 10 is relatively large. This allows the combustion gases inside the burner cap structure 10 to be better blocked at the location of the blocking part 14. Consequently, during flame transmission, the blocking part 14 can better isolate the flames on both sides of the flame hole 11, more effectively limiting the mutual transmission of flames between the annular groove-shaped flame hole 11 on both sides of the blocking part 14. Meanwhile, by ensuring that the extension length of the baffle portion 14 is at least less than 10 times the radial width c of the annular groove-shaped flame hole 11, the size of the baffle portion is prevented from being too large and occupying the installation space of the annular groove-shaped flame hole 11, thus avoiding insufficient firepower of the burner. Of course, in other alternative embodiments, the baffle portion 14 can also be configured with other shapes or sizes, as long as it can block the flame transmitted on the annular groove-shaped flame hole 11 at the location of the baffle portion 14.

[0072] Furthermore, such as Figure 2 and Figure 6 As shown, the burner cap structure 10 is also provided with a flame transmission channel 13 extending radially along the burner cap structure 10, and in the circumferential direction L of the burner cap structure, a baffle 14 is provided at the corresponding position of the flame transmission channel 13 and the annular groove-shaped flame hole 11. The flame transmission channel 13 can transmit the inner ring flame of the burner to the burner cap structure 10, thereby igniting the gas injected from the annular groove-shaped flame hole 11 and the cylindrical flame hole 12 and forming an outer ring flame.

[0073] Therefore, the flame transmission channel 13 serves as the initial position for ignition of the gas on the flame cap structure 10. By setting the baffle 14 at the corresponding position between the flame transmission channel 13 and the annular groove flame hole 11, the gas at the annular groove flame hole 11 is blocked at the initial position of gas ignition. Through the blocking of the baffle 14, the annular groove flame hole 11 is ignited later in the flame transmission channel 13 than the cylindrical flame hole 12. That is, the flame transmission channel 13 first ignites the gas ejected from the cylindrical flame hole 12, and the flame of the cylindrical flame hole 12 then ignites the gas ejected from the corresponding position of the annular groove flame hole 11. This slightly delays the ignition time of the annular groove flame hole 11 in the flame transmission channel 13, making it later than the cylindrical flame hole 12. This allows the flame transmission of the annular groove flame hole 11 to be kept as synchronized as possible with the flame transmission of the cylindrical flame hole 12, reducing the probability of deflagration.

[0074] It should be noted that in this embodiment, there is only one baffle 14, so the baffle 14 is directly set at the corresponding position of the flame transmission channel 13 and the annular flame hole 11. However, in other alternative embodiments, the baffle 14 can also be set as multiple baffles, which are spaced apart in the circumferential direction L of the flame cap structure. With this arrangement, the flame transmission of the annular flame hole 11 can be interrupted by multiple baffles 14, and the gas ejected from the annular flame hole 11 can only be ignited through the corresponding cylindrical flame hole 12. This makes the flame transmission of the annular flame hole 11 and the flame transmission of the cylindrical flame hole 12 more synchronized, thereby more effectively preventing the flame cap structure 10 from deflagrism at the position of the cylindrical flame hole 12.

[0075] Furthermore, in the circumferential direction L of the flame cap structure, the extension length of the flame transmission channel 13 is smaller than the extension length b of the corresponding baffle. This allows the baffle 14 to block the combustion gas at the point where the flame is transmitted from the flame transmission channel 13 to the annular flame hole 11, preventing the annular flame hole 11 from being ignited by the flame transmitted from the flame transmission channel 13, thereby delaying the ignition time of the annular flame hole 11. Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the shape of the ignition channel 13 is specifically a through hole penetrating the flame cap structure 10. The extension length of the ignition channel 13 in the circumferential direction L of the flame cap structure is the inner diameter of the ignition channel 13. The end of the ignition channel 13 away from the central axis of the flame cap structure 10 is located above the baffle portion 14. With this arrangement, the ignition channel 13 can be used more effectively to ignite the gas ejected from the flame holes on the flame cap structure 10. At the same time, by positioning the end of the ignition channel 13 above the corresponding baffle portion 14, that is, the ignition channel 13 is positioned above the annular groove flame hole 11, the basic function of the ignition channel 13 is ensured while preventing the annular groove flame hole 11 from being ignited by the ignition channel 13. It also prevents interference between the annular groove flame hole 11 and the flame stabilizing groove of the ignition channel 13, which would affect the normal setting of the annular groove flame hole 11.

[0076] Furthermore, such as Figure 4 and Figure 8As shown, the baffle 14 is specifically connected to the inner wall of the burner cap structure 10, and at the location where the baffle 14 is set in the burner cap structure 10, the outer surface of the baffle 14 is recessed into the outer surface of the burner cap structure 10. This arrangement allows the outer surface of the baffle 14 to cooperate with the annular groove-shaped flame hole 11 to form a blind hole structure. While satisfying the requirement to use the baffle 14 to block the combustion gas, it also ensures that the baffle 14 is not visible from the outside of the burner cap structure 10, maintaining the overall aesthetics of the burner cap structure 10. Simultaneously, utilizing the formed blind hole structure, when there is overflowing liquid at the location of the baffle 14, the liquid can be guided to both sides through the blind hole structure, effectively reducing the occurrence of liquid stagnation.

[0077] Of course, in other alternative embodiments, the baffle 14 can also be disposed inside the annular groove flame hole 11, or disposed inside the annular groove flame hole 11 and extending into the flame cap structure 10, both of which can achieve the effect of using the baffle 14 to block the gas.

[0078] like Figure 2 , Figure 5 and Figure 6 As shown, a groove 15 is also provided on the outer wall of the flame cap structure 10. The groove 15 is located below the end of the flame transmission channel 13 away from the central axis of the flame cap structure 10 and is connected to the corresponding annular groove-shaped flame hole 11. With this arrangement, when there is overflowing liquid in the flame transmission channel 13 located above, the overflowing liquid can be collected by the groove 15, and then the annular groove-shaped flame hole 11 connected to the groove 15 can form a siphon effect, so that the overflowing liquid can be quickly guided to the surrounding area, thereby reducing the retention or backflow of overflowing liquid and preventing the vent hole in the flame transmission hole from being blocked.

[0079] Furthermore, in the circumferential direction L of the flame cap structure, the extension length of the groove 15 is greater than the inner diameter of the flame transmission channel 13, while the extension length of the groove 15 is less than the extension length b of the corresponding partition. This dimensional arrangement results in the inner diameter of the flame transmission channel 13, the extension length of the groove 15, and the extension length b of the partition increasing sequentially. On one hand, when the flame is transmitted from the flame transmission channel 13 to the annular flame hole 11, the partition 14 can block the combustion gas at the point where the flame is transmitted, preventing the annular flame hole 11 from being ignited by the flame transmitted from the flame transmission channel 13. On the other hand, the overflowing liquid at the flame transmission channel 13 can be completely collected by the groove 15, and the annular flame hole 11 can effectively utilize a siphon effect to guide the overflowing liquid, preventing it from flowing directly into the interior of the flame cap structure 10 through the groove structure.

[0080] Whether the overflowing droplet located at the annular groove-shaped flame hole 11 will flow downwards from the gap of the annular groove-shaped flame hole 11 depends on the difference between the gravity and surface tension of the overflowing droplet. If the surface tension of the overflowing droplet is less than its own gravity, then gravity can overcome the surface tension and cause the overflowing droplet to flow downwards, avoiding stagnation at the annular groove-shaped flame hole 11.

[0081] The surface tension Ft of the droplet is determined by the surface tension coefficient γ and the actual diameter l of the droplet, and is calculated using the formula Ft = γ·l. Therefore, the surface tension of the droplet is positively correlated with its actual diameter l; the smaller the actual diameter l, the smaller the surface tension. For a droplet unconstrained by external structures and in a hemispherical natural state, the actual diameter l can be approximated as the overflow droplet diameter d. If the droplet is located within the annular groove-shaped flame hole 11, and the radial width c of the annular groove-shaped flame hole 11 is smaller than the overflow droplet diameter d, then the actual diameter l of the droplet is determined by the radial width c of the annular groove-shaped flame hole.

[0082] Therefore, as Figure 2 As shown, preferably, in this embodiment, the radial width dimension c of the annular groove-shaped flame hole 11 should be less than or equal to 50% of the diameter of the overflow droplet, so that the annular groove-shaped flame hole 11 is smaller than the diameter of the overflow droplet, and the overflow droplet cannot form a natural hemisphere. The actual diameter of the overflow droplet used to calculate the surface tension is determined by the radial width dimension of the annular groove-shaped flame hole, ensuring that the surface tension can be overcome by the gravity of the droplet.

[0083] Specifically, the radial width c of the annular groove-shaped flame hole on the flame cap structure should be less than or equal to 1.15 mm. This is because the diameter of the overflow droplet is usually in the range of 2.3-4.3 mm. By making the radial width c of the annular groove-shaped flame hole less than or equal to 1.15 mm, it is ensured that the radial width c of the annular groove-shaped flame hole will be less than or equal to 50% of the smallest overflow droplet, so that the surface tension can be overcome by the gravity of the droplet and the overflow droplet at the annular groove-shaped flame hole 11 can flow out quickly.

[0084] In addition, such as Figure 7 and Figure 8 As shown, on the flame cap structure 10, the depth dimension d of the annular groove flame hole is greater than the maximum thickness h of the flame cap structure 10 at the location where the annular groove flame hole is located. Simultaneously, the radial width c of the annular groove flame hole is greater than 0.6 times the maximum thickness h of the flame cap structure 10 at the location of the annular groove flame hole. With this dimensional arrangement, when there is overflowing liquid at the baffle 14 position, the surface tension of most of the liquid in this situation is less than its own weight, allowing the liquid to be quickly guided to both sides, thereby more effectively reducing the occurrence of liquid stagnation.

[0085] like Figure 8 As shown, the outer wall of the burner cap structure 10 through which the annular flame hole 11 and the cylindrical flame hole 12 pass is an inclined surface, and the flame transmission channel 13 passes through this inclined surface at its top in the vertical direction. By setting the outer wall of the burner cap structure 10 to an inclined surface, the flame formed on the outer wall of the burner cap structure 10 can better heat the pot above. At the same time, by having the flame transmission channel 13 pass through this inclined surface at its top in the vertical direction, when the pot overflows, the top of the flame transmission channel 13 can be used to block the overflowing liquid, preventing the overflowing liquid from directly entering the interior of the flame transmission channel 13 from above, thereby preventing blockage of the vent holes in the flame transmission holes.

[0086] In addition, such as Figure 2 , Figure 3 and Figure 4 As shown, the flame cap structure 10 is also provided with a number of connecting ribs 16. These connecting ribs 16 are spaced apart at the annular groove flame holes 11 along the circumferential direction L of the flame cap structure, and the interval between adjacent connecting ribs 16 is greater than the extension length of a single connecting rib 16. By spaced apart at the annular groove flame holes 11, these connecting ribs 16 connect the flame cap structure 10 along the circumferential direction L, thus ensuring that the flame cap structure 10 will not break at the annular groove flame holes 11. Furthermore, the interval between adjacent connecting ribs 16 is greater than the extension length of the connecting ribs 16 along the circumferential direction L of the flame cap structure, thereby preventing the connection ribs 16 from interfering with the flame transmission through the annular groove flame holes 11.

[0087] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A flame cap structure, wherein adjacent annular groove flame holes and non-annular groove flame holes are provided on the flame cap structure, the annular groove flame holes and non-annular groove flame holes extending along the circumferential direction of the flame cap structure, and the annular groove flame holes and non-annular groove flame holes being arranged sequentially along the radial direction of the flame cap structure, characterized in that: The flame cap structure is also provided with at least one partition, which is correspondingly located at the position of the annular groove flame hole. The partition closes the corresponding position of the annular groove flame hole along the circumferential direction of the flame cap structure to restrict the flame from being transmitted between the annular groove flame hole on both sides of the partition. The partition is connected to the inner wall of the flame cap structure, and at the location where the partition is provided on the flame cap structure, the outer surface of the partition is relatively concave to the outer surface of the flame cap structure.

2. The flame cap structure as described in claim 1, characterized in that, The length of the partition portion that closes the annular groove-shaped flame hole along the circumferential direction of the flame cap structure is b, and the radial width of the annular groove-shaped flame hole on the flame cap structure is c; wherein, 4c < b.

3. The flame cap structure as described in claim 1, characterized in that, The flame cap structure is also provided with a flame transmission channel extending in the radial direction of the flame cap structure, and in the circumferential direction of the flame cap structure, one of the partitions is provided at the corresponding position of the flame transmission channel and the annular groove flame hole.

4. The flame cap structure as described in claim 3, characterized in that, In the circumferential direction of the flame cap structure, the extension length of the flame transmission channel is smaller than the extension length of the corresponding partition.

5. The flame cap structure as described in claim 3, characterized in that, The fire transmission channel is a through hole that penetrates the flame cap structure, and the end of the fire transmission channel away from the central axis of the flame cap structure is located above the corresponding partition.

6. The flame cap structure as described in claim 5, characterized in that, A groove is also provided on the outer wall of the flame cap structure. The groove is located below the end of the flame transmission channel away from the central axis of the flame cap structure and is connected to the annular groove-shaped flame hole at the corresponding position.

7. The flame cap structure as described in claim 6, characterized in that, In the circumferential direction of the flame cap structure, the extension length of the groove is greater than the inner diameter of the flame transmission channel, and the extension length of the groove is less than the extension length of the corresponding partition.

8. The flame cap structure as described in claim 5, characterized in that, The radial width of the annular groove-shaped flame hole on the flame cap structure is less than or equal to 50% of the diameter of the overflow droplet.

9. The flame cap structure as described in claim 8, characterized in that, The radial width of the annular groove-shaped fire hole on the fire cap structure is less than or equal to 1.15 mm; And / or, the depth dimension of the annular groove-shaped flame hole on the flame cap structure is greater than the maximum thickness dimension of the flame cap structure at the location where the annular groove-shaped flame hole is provided; And / or, the radial width dimension of the annular groove-shaped flame hole on the flame cap structure is greater than 0.6 times the maximum thickness dimension of the flame cap structure at the location where the annular groove-shaped flame hole is provided.

10. The flame cap structure as described in claim 5, characterized in that, The outer wall of the flame cap structure through which the annular flame hole passes is an inclined surface, and the flame transmission channel passes through the inclined surface at its top in the vertical direction.

11. The flame cap structure as described in any one of claims 1-10, characterized in that, The flame cap structure is also provided with a number of connecting ribs. In the circumferential direction of the flame cap structure, the number of connecting ribs are spaced apart at the position of the annular groove flame hole, and the spacing between adjacent connecting ribs is greater than the extension length of the connecting rib. And / or, the number of the partitions is multiple, and the multiple partitions are spaced apart in the circumferential direction of the flame cap structure.

12. A burner, characterized in that, The burner includes: Combustion base; The flame cap structure as described in any one of claims 1-11, wherein the flame cap structure is disposed on the combustion base and cooperates with the combustion base to form a gas receiving cavity.

13. A gas stove, characterized in that, The gas stove includes a burner as described in claim 12.

Images