Central fire cover and stove burner

Abstract

The utility model relates to a central fire cover and a stove burner, which comprise an air inlet hole, a first air passage and a second air passage, the first air passage and the second air passage are adjacent and arranged at intervals, and the air inlet hole is communicated with the first air passage and the second air passage. The utility model has the beneficial effects that the air inlet is communicated with the first air passage and the second air passage, so that air can respectively enter and exit from the two air passages. The two air channels are arranged adjacently and can be ignited again through flames beside the two air channels when the two air channels leave the flame, so that the two air channels can cooperate with each other to stabilize the flame, and the combustion efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, and specifically relates to a center fire cover and a cooking appliance burner provided with the center fire cover. BACKGROUND

[0002] At present, some burners with slit fire structure appear on the market, and the burners are generally composed of single-ring slits or multiple-ring slits, but in actual use, the flame is prone to flame separation, causing the condition of flameout. SUMMARY

[0003] The utility model solves the technical problem of providing a center fire cover and a cooking appliance burner for improving the stability of slit fire flame and reducing the degree of flame separation.

[0004] The technical scheme for solving the above technical problem is as follows: a center fire cover comprises an air inlet hole, a first air channel and a second air channel which are arranged adjacently and at intervals; wherein the air inlet hole is in communication with the first air channel and the second air channel.

[0005] The center fire cover has the advantages that the first air channel and the second air channel are arranged adjacently and at intervals, and the flame beside the flame can be re-ignited when the flame separates, so that the flames can be stabilized by mutual cooperation. The air inlet hole is in communication with the first air channel and the second air channel, so that the gas can enter and exit from the two air channels.

[0006] On the basis of the above technical scheme, the utility model can be further improved as follows.

[0007] Further, the first air channel and the second air channel are arranged along the circumference of the center fire cover to form the annular first air channel and the annular second air channel; wherein the first air channel is arranged at the outer circle of the second air channel; and the air outlet directions of the first air channel and the second air channel are consistent.

[0008] Further, the distance between the first center line of the first air channel in the depth direction and the second center line of the second air channel in the depth direction is 0.5-1.5 times the width of the first air channel or the width of the second air channel.

[0009] Further, the distance between the first center line of the first air channel in the depth direction and the second center line of the second air channel in the depth direction is 0.5-1.5 times the width of the first air channel or the width of the second air channel.

[0010] Further, the central fire cover comprises: a first sub-cover body, a second sub-cover body and a third sub-cover body arranged in layers, the first sub-cover body and the second sub-cover body are arranged at intervals to form the first air channel; the second sub-cover body and the third sub-cover body are arranged at intervals to form the second air channel; wherein the second sub-cover body separates the first air channel and the second air channel.

[0011] The beneficial effect of the further scheme is that the first air channel and the second air channel are adjacent and close to each other by isolating the first sub-cover body and the third sub-cover body by the second sub-cover body, so that the first air channel and the second air channel can mutually assist combustion.

[0012] Further, the first sub-cover body comprises a first bottom wall and a first side wall, the air inlet hole is arranged on the first bottom wall; the second sub-cover body has a plurality of through holes, the first air channel communicates with the second air channel through the through holes, so that the gas in the first air channel can further enter the second air channel. Thus, mutual combustion can be achieved, for example, when the flame in the first air channel is separated or extinguished, the second air channel can ignite the burner tip, thereby ensuring the combustion state of the burner tip.

[0013] Further, the second sub-cover body comprises a second bottom wall and a second side wall, the second side wall is arranged inclined to the second bottom wall, and a plurality of through holes are arranged in a ring shape on the second side wall, so that the overflow liquid can flow out of the inclined second side wall after entering the second air channel, ensuring smooth airflow through the through holes. The air inlet hole is arranged in a ring shape on the first bottom wall, and small hole air inlet is achieved through a plurality of air inlet holes in a ring shape, so that the burner tip emits fire more accurately.

[0014] Further, the second sub-cover body comprises a second bottom wall and a second side wall, and a plurality of through holes are arranged in a ring shape on the second bottom wall to ensure the air intake of the second air channel.

[0015] Further, the air inlet hole comprises a first air inlet hole and a second air inlet hole, the first air inlet hole communicates with the first air channel, and the second air inlet hole communicates with the through hole and the second air channel in sequence; wherein a plurality of first air inlet holes and a plurality of second air inlet holes are arranged in a ring shape on the first bottom wall, and a plurality of first air inlet holes are arranged on the periphery of a plurality of second air inlet holes; multiple ring air inlet holes can ensure sufficient air intake.

[0016] Further, an annular partition is arranged between the first air inlet hole and the second air inlet hole, and the two ends of the annular partition abut against the first bottom wall and the second bottom wall respectively, so as to isolate the plurality of first air inlet holes from the plurality of second air inlet holes. The annular partition isolates the first air channel from the second air channel, so that the first air channel and the second air channel independently intake and exhaust air.

[0017] Further, the aperture of the first air inlet hole is larger than the aperture of the second air inlet hole, so that the air intake amount of the first air channel can be greater than the air intake amount of the second air inlet hole.

[0018] Further, the first air channel width and the second air channel width are both less than or equal to 5mm, so as to form a narrow and long gas passage.

[0019] Further, the first air channel and the second air channel are arranged in parallel, so that the air exhaust direction of the first air channel and the second air channel is consistent, which helps to realize mutual combustion support of the first air channel and the second air channel.

[0020] Further, the gas flow rate of the first air channel is greater than the gas flow rate of the second air channel, so that the flame of the first air channel burns more vigorously and more fully, and the flame of the second air channel has higher stability.

[0021] Further, the air inlet hole is in communication with the mixing chamber of the gas stove burner.

[0022] Further, the bottom end of the first bottom wall has a first extension portion, which extends to the mixing chamber of the gas stove burner, so as to communicate the air inlet hole with the mixing chamber, so that the gas can enter the air channel from the first through hole, while ensuring the air tightness of the center fire cover.

[0023] Further, the first sub-cover body, the second sub-cover body and the third sub-cover body are arranged in layers, and the first sub-cover body and the second sub-cover body, and the second sub-cover body and the third sub-cover body are detachably connected, so as to facilitate disassembly, assembly and maintenance.

[0024] Further, one of the first sub-cover body and the second sub-cover body has a first boss, and the other has a first annular protrusion, and the first annular protrusion is matched and connected with the first boss to realize detachable connection; one of the second sub-cover body and the third sub-cover body has a second boss, and the other has a second annular protrusion, and the second annular protrusion is matched and connected with the second boss to realize detachable connection, which has simple structure and is convenient to install.

[0025] Further, the third sub-cover body comprises a third bottom wall and a third side wall, and a containing groove for containing overflow liquid is formed by the third bottom wall and the third side wall, so that liquid overflowing from the pot can be prevented from directly blocking the air passage and causing the flame to be extinguished during cooking, thereby ensuring the stability of the flame.

[0026] Further, the first bottom wall, the second bottom wall and the third bottom wall are all flat and arranged in parallel with each other, the air passage wall formed by the flat surfaces is smoother, so that the air outlet effect is better; the first side wall, the second side wall and the third side wall are arranged obliquely relative to the first bottom wall, the second bottom wall and the third bottom wall, and the first side wall, the second side wall and the third side wall are arranged in parallel with each other. On the one hand, the first sub-cover body, the second sub-cover body and the third sub-cover body are convenient to install, and on the other hand, the first air passage and the second air passage can be arranged obliquely, thereby facilitating air outlet.

[0027] Further, the air inlet hole is arranged at the center of the first bottom wall, and the air inlet hole is communicated with the first air passage; or the air inlet hole is arranged at the center of the first bottom wall, and the air inlet hole is communicated with the first air passage and the second air passage. It can be understood that the air inlet hole arranged at the center of the first bottom wall can enter the first air passage first and then enter the second air passage through the through hole; or the air inlet hole arranged at the center of the first bottom wall can make the gas enter the first air passage and the second air passage at the same time, for example, the air inlet hole is directly communicated with the first air passage and the second air passage.

[0028] Further, a first connecting wall connecting the first side wall and the second side wall is arranged between the first side wall and the second side wall; and / or a second connecting wall connecting the second side wall and the third side wall is arranged between the second side wall and the third side wall; wherein the first connecting wall is provided with an air passage opening communicated with the first air passage, and the second connecting wall is provided with an air passage opening communicated with the second air passage. That is, when the air inlet hole is arranged at the center of the first bottom wall, the first sub-cover body, the second sub-cover body and the third sub-cover body can be connected at the periphery, for example, the connecting walls are arranged between the first side wall and the second side wall and between the second side wall and the third side wall, respectively, and the air passage openings are arranged in the connecting walls to facilitate air flow. Alternatively, a plurality of sub-connecting walls can be arranged at intervals, so that the second gap between adjacent sub-connecting walls can be ventilated.

[0029] The technical problem to be solved by the utility model is the instability of the flame of the center fire cover and the high degree of flame separation in the prior art.

[0030] The technical solution for solving the above technical problem is as follows: a stove burner is installed with the center fire cover according to any one of the above technical solutions.

[0031] The center fire cover has the beneficial effects of the center fire cover. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a whole structure schematic view of the center fire cover of the utility model;

[0033] Figure 2 It is an exploded structure schematic view of the first embodiment of the center fire cover of the utility model;

[0034] Figure 3 It is Figure 2 It is the first embodiment of the section structure schematic view of the center fire cover along B-B line in

[0035] Figure 4 It is Figure 1 It is the first embodiment of the section structure schematic view of the center fire cover along A-A line in

[0036] Figure 5 It is the airflow flow schematic view of the first embodiment of the center fire cover of the utility model;

[0037] Figure 6 It is the section structure schematic view of the second embodiment of the center fire cover of the utility model;

[0038] Figure 7 It is Figure 1 It is the second embodiment of the section structure schematic view of the center fire cover along A-A line in

[0039] Figure 8 It is the airflow flow schematic view of the second embodiment of the center fire cover of the utility model;

[0040] Figure 9 It is Figure 1 It is the first structure section view of the third embodiment of the center fire cover along A-A line in

[0041] Figure 10 It is the airflow flow schematic view of the first structure of the third embodiment of the center fire cover of the utility model;

[0042] Figure 11 It is Figure 1 It is the second structure section view of the third embodiment of the center fire cover along B-B line in

[0043] Figure 12 It is the airflow flow schematic view of the second structure of the third embodiment of the center fire cover of the utility model;

[0044] Figure 13 It is Figure 1 It is the third structure section view of the third embodiment of the center fire cover along A-A line in

[0045] Figure 14 Figure 3 is a schematic diagram of airflow flow of a third structure of a third embodiment of the center fire cover of the utility model;

[0046] Figure 15 Figure 1 is a schematic diagram of the overall structure of the utility model stove burner.

[0047] In the drawings, the components represented by each reference numeral are listed as follows:

[0048] 10, first sub-cover body, 101, first air duct, 102, second air duct, C1, first center line, C2, second center line, W1, first air duct width, W2, second air duct width, 104, air outlet, X, air outlet direction, 11, first bottom wall, 110, air inlet hole, 111, first air inlet hole, 112, second air inlet hole, 12, first side wall, 13, first extension, 14, first boss, 15, annular partition, 20, second sub-cover body, 21, second bottom wall, 22, second side wall, 221, through hole, 23, second boss, 24, first annular protrusion, 30, third sub-cover body, 31, third bottom wall, 32, third side wall, 33, accommodating groove, 34, second annular protrusion, 35, first connecting wall, 351, first air vent, 36, second connecting wall, 361, second air vent, 37, sub connecting wall, 38, second gap, 100, center fire cover, 200, stove burner, 201, outer ring fire cover, 202, mounting bracket, 2021, support leg, 203, mixing chamber, 204, air inlet pipe, 205, mounting cavity. DETAILED DESCRIPTION

[0049] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and not to limit the scope of the utility model.

[0050] In order to solve the single ring seam in the prior art, which is prone to flame off flame, causing the condition of flameout, improve the center fire cover combustion stability, the application designs a new center fire cover structure.

[0051] As Figures 1 to 8 shown is a center fire cover 100 provided by the embodiment of the application, the center fire cover 100 is used for a stove burner 200, the center fire cover 100 has an air inlet hole 110 and adjacent and spaced first air duct 101 and second air duct 102, wherein the air inlet hole 110 is communicated with the first air duct 101 and the second air duct 102. The first air duct 101 and the second air duct 102 are close to, adjacent to and spaced from each other, so that the distance between the first air duct 101 and the second air duct 102 is close, so that they can cooperate with each other to stabilize the flame and improve the combustion efficiency.

[0052] Furthermore, the first air passage 101 and the second air passage 102 are arranged circumferentially along the central flame cap 100 to form an annular first air passage 101 and an annular second air passage 102; the first air passage 101 is located on the outer ring of the second air passage 102; and the air outlet direction X of the first air passage 101 and the second air passage 102 is the same. The air outlet direction X can be understood as the direction from the air inlet 110 of the first air passage 101 or the second annular air passage to the air outlet 104. For example, the angle difference between the air outlet direction X of the first air passage 101 and the air outlet direction X of the second air passage 102 is less than 10 degrees, preferably the air outlet direction X of the first air passage 101 and the air outlet direction of the second air passage 102 are parallel, which means the air outlet 104 of the first air passage 101 and the air outlet 104 of the second air passage 102 are also parallel to each other. In this embodiment, the air inlet 110 is disposed on the bottom wall of the first sub-cover 10, and the air outlet 104 is the end of the first air passage 101 or the second air passage 102 away from the bottom wall of the first sub-cover 10.

[0053] For example, the distance between the first centerline C1 of the first airway 101 along the depth direction and the second centerline C2 of the second airway 102 along the depth direction is 0.5 to 1.5 times the width W1 of the first airway or the width W2 of the second airway.

[0054] For example, the distance between the first center line C1 of the first air passage 101 along the depth direction and the second center line C2 of the second air passage 102 along the depth direction is in the range of 3mm to 8mm, preferably in the range of 4mm to 6mm, and preferably 5mm, so that the mutual combustion-supporting effect of the first air passage 101 and the second air passage 102 is better.

[0055] like Figures 1 to 6 As shown, the central burner cap 100 may include: a first sub-cap 10, a second sub-cap 20, and a third sub-cap 30 stacked together. The first sub-cap 10 and the second sub-cap 20 can be spaced apart by a mutually configured spacing structure (not shown in the figure) to form a first air passage 101; the second sub-cap 20 and the third sub-cap 30 can also be spaced apart by a mutually configured spacing structure to form a second air passage 102; the second sub-cap 20 can separate the first air passage 101 and the second air passage 102. By isolating the first sub-cap 10 and the third sub-cap 30 with the second sub-cap 20, the first air passage 101 and the second air passage 102 are formed as adjacent and closely arranged, allowing the first air passage 101 and the second air passage 102 to mutually support combustion.

[0056] The first sub-cover 10 has multiple air inlets 110, which are connected to the first air passage 101, so that the air entering from the air inlets 110 can further enter the first air passage 101.

[0057] Specifically, the first sub-cover body 10 comprises a first bottom wall 11 and a first side wall 12, and a plurality of air inlet holes 110 can be irregularly or annularly arranged on the first bottom wall 11. The air inlet holes 110 can comprise two or one circle. It can be understood that the air inlet holes 110 arranged in two circles can improve the air inlet efficiency of the first air channel 101 and the second air channel 102. In other embodiments, the plurality of air inlet holes 110 can also be discontinuous annular, the plurality of air inlet holes 110 can be arranged in only half a circle, or the plurality of circular holes can be irregularly arranged on the first bottom wall 11, as long as the air passage area is sufficient to ensure the air volume of the air inlet holes 110.

[0058] The second sub-cover body 20 has a plurality of through holes 221, and the first air channel 101 and the second air channel 102 are communicated through the through holes 221.

[0059] Specifically, as shown in Figure 4 and Figure 7 , the second sub-cover body 20 comprises a second bottom wall 21 and a second side wall 22, and the second side wall 22 is arranged obliquely relative to the second bottom wall 21, that is, the second bottom wall 21 and the second side wall 22 have a certain included angle. The through holes 221 can be arranged on the second bottom wall 21 or the second side wall 22, so that the first air channel 101 and the second air channel 102 are communicated through the through holes 221, and the gas in the first air channel 101 can further enter the second air channel 102 through the through holes 221. Thus, they can mutually assist combustion, for example, when the flame in the first air channel 101 is separated from the flame or extinguished, the second air channel 102 can ignite the burner, thereby ensuring the combustion state of the burner.

[0060] The diameter of the through hole 221 can be the same as or different from the diameter of the air inlet hole 110. In order to ensure the gas flow rate of the first air channel 101, the diameter of the through hole 221 is preferably less than or equal to the diameter of the air inlet hole 110. For example, the diameter of the through hole 221 can be less than the diameter of the first air inlet hole 111, and equal to the diameter of the second air inlet hole 112.

[0061] The first air channel 101 and the second air channel 102 are preferably arranged in parallel, so that the first air channel 101 and the second air channel 102 have consistent air outlet directions, and are arranged close to each other, thereby being able to mutually assist combustion, for example, when the flame in the first air channel 101 is separated from the flame or extinguished, the second air channel 102 can ignite the burner, thereby ensuring the combustion state of the burner.

[0062] As shown in Figures 1 to 7 , the third sub-cover body 30 can comprise a third bottom wall 31 and a third side wall 32 arranged obliquely relative to the third bottom wall 31, and the third bottom wall 31 and the third side wall 32 surround to form a containing groove 33 for containing overflow liquid. The containing groove 33 can be a pit structure, which can prevent the overflow liquid overflowing from the cooking utensil from directly blocking the air channel and causing extinguishing during cooking, thereby ensuring the stability of the flame.

[0063] The air inlet 110 can be connected to the mixing chamber 203 of the stove burner 200, so that the gas and air in the mixing chamber 203 can enter the air inlet 110 and enter the first air passage 101 and the second air passage 102 through the air inlet 110.

[0064] Specifically, the bottom end of the first bottom wall 11 has a first extension 13, which extends from the outer end of the first bottom wall 11 and can be arranged in a ring shape. The first extension 13 extends to the mixing chamber 203 of the stove burner 200 to connect the air inlet 110 to the mixing chamber 203, allowing gas to enter the gas passage from the air inlet 110 while ensuring the airtightness of the center burner cap 100. For example, the first extension 13 can extend to the inner or outer side wall of the mixing chamber 203 and be detachably connected to the side wall of the mixing chamber 203 by means of snap-fit ​​or threaded connection.

[0065] The structure of the center flame cap 100 is described in detail below through specific embodiments.

[0066] First embodiment:

[0067] like Figures 2 to 5 As shown, in this embodiment, multiple through holes 221 can be formed in a ring on the second sidewall 22. Compared with forming the through holes 221 on a plane, forming multiple through holes 221 on the inclined second sidewall 22 can avoid the problem of overflow liquid entering the second gas passage 102 and blocking the through holes 221, thus preventing the gas from passing through. This allows the overflow liquid to flow out from the inclined second sidewall 22, ensuring smooth airflow through the through holes 221.

[0068] In this embodiment, the air inlet 110 can be two rings or one ring, preferably two rings, to ensure sufficient air intake.

[0069] Specifically, such as Figures 3 to 7 As shown, the air inlet 110 may include a first air inlet 111 and a second air inlet 112, with the first air inlet 111 surrounding the second air inlet 112.

[0070] In the embodiment, the air and gas entering from the air inlet hole 110 of the first bottom wall 11 can pass through the first air inlet hole 111 and the second air inlet hole 112, and then part of the air and gas flows out from the air outlet 104 of the first air passage 101 between the first sub-cover 10 and the second sub-cover 20, i.e. the first gap (not marked in the figure), and the other part of the air and gas flows out from the air outlet 104 after passing through the through hole 221 from the first air passage 101 to the second air passage 102. It can be understood that, since the first air passage 101 is directly communicated with the air inlet hole 110, the gas flow rate of the first air passage 101 is greater than that of the second air passage 102, so that the flame of the first air passage 101 is also larger when the burner is burning, and the flame of the second air passage 102 is relatively small, thereby enabling the two air passages to mutually assist combustion. For example, when the flame of the first air passage 101 is too large to separate, the second air passage 102 in the inner ring always has a flame, so that the second air passage 102 can ignite the gas of the first air passage 101, thereby ensuring the combustion state of the burner and achieving the effect of stabilizing the flame. The air inlet hole 110 is annularly arranged on the first bottom wall 11, and the small hole air inlet is realized through the annular arrangement of the plurality of air inlet holes 110, so that the burner can emit fire more accurately.

[0071] Second embodiment:

[0072] As shown in Figures 6 to 8 , the air inlet hole 110 can include the first air inlet hole 111 and the second air inlet hole 112, the first air inlet hole 111 is annularly arranged at the periphery of the second air inlet hole 112, and the diameter of the first air inlet hole 111 is greater than that of the second air inlet hole 112, so that the amount of air entering the first air inlet hole 111 is greater than that of the second air inlet hole 112. In the embodiment, a partition structure (not marked in the figure) is arranged between the first air inlet hole 111 and the second air inlet hole 112, which can be an annular partition 15 to isolate the first air inlet hole 111 from the second air inlet hole 112; the two ends of the annular partition 15 abut against the first bottom wall 11 and the second bottom wall 21, respectively, to isolate the plurality of first air inlet holes 111 from the plurality of second air inlet holes 112.

[0073] Correspondingly, multiple through holes 221 are formed in a ring on the second bottom wall 21. The first air inlet 111 is connected to the first air passage 101; the second air inlet 112 is connected to the through hole 221 and the second air passage 102 in sequence, so that the annular partition 15 separates the first air passage 101 and the second air passage 102, thereby allowing the first air passage 101 and the second air passage 102 to independently intake and exhaust air. It can be understood that since the diameter of the first air inlet 111 is larger than the diameter of the second air inlet 112, the gas flow velocity of the first air passage 101 is also greater in this embodiment. The second air inlet 112 is connected to the through hole 221 and further connected to the second air passage 102. Its gas flow channel is longer, and the diameter of the second air inlet 112 is smaller. Therefore, the gas flow velocity of the second air passage 102 is smaller than that of the first air passage 101, making the flame combustion of the first air passage 101 more vigorous and complete, and the flame combustion stability of the second air passage 102 higher. In this embodiment, the gas flow rate of the second air passage 102 is also lower than that in the first embodiment, thus resulting in higher flame stability. The annular partition 15 can be a single annular protrusion structure or multiple arc-shaped protrusions, wherein the multiple arc-shaped protrusions can be spaced apart or tightly connected, preferably tightly connected.

[0074] Third embodiment:

[0075] like Figures 9 to 10 As shown, in the first structure of this embodiment, the air inlet 110 can be opened at the center of the first bottom wall 11, and the air inlet 110 can be connected to the first air passage 101; it can be understood that the air inlet 110 opened at the center of the first bottom wall 11 can first enter the first air passage 101, and then enter the second air passage 102 through the through hole 221 from the first air passage 101.

[0076] It is understood that in the first structure of this embodiment, the first connecting wall 35 can be provided only between the first sub-cover 10 and the second sub-cover 20, while the second sub-cover 20 and the third sub-cover 30 are still connected by the second boss 23 and the second annular protrusion 34. The first connecting wall 35 can be provided on the bottom wall or side wall of the first sub-cover 10 and the second sub-cover 20. The first connecting wall 35 has a first vent 351 communicating with the first air passage 101, so that the gas in the first air passage 101 can reach the air outlet 104 through the first vent 351 to achieve gas discharge.

[0077] like Figures 11 to 12As shown, in the second structure of the embodiment, the air inlet hole 110 can be arranged at the center of the first bottom wall 11, and the air inlet hole 110 can be communicated with the first air channel 101; a plurality of sub-connection walls 37 can be arranged between the first side wall 12 and the second side wall 22 and between the second side wall 22 and the third side wall 32, and the second gaps 38 are arranged between adjacent sub-connection walls 37, so that the first air channel 101 or the second air channel 102 can flow through the second gaps 38 between the adjacent sub-connection walls 37.

[0078] It can be understood that, in the second structure of the embodiment, as shown, Figures 11 to 12 a plurality of sub-connection walls 37 can be arranged between the first sub-cover body 10 and the second sub-cover body 20, and the second sub-cover body 20 and the third sub-cover body 30 are still connected by the second boss 23 and the second annular protrusion 34. The plurality of sub-connection walls 37 can be arranged on the bottom wall or the side wall of the first sub-cover body 10 and the second sub-cover body 20.

[0079] As shown, Figures 13 to 14 in the third structure of the embodiment, the air inlet hole 110 is arranged at the center of the first bottom wall 11, and the air inlet hole 110 can be communicated with the first air channel 101 and the second air channel 102. It can be understood that the gas enters the first air channel 101 and the second air channel 102 at the same time after passing through the air inlet hole 110 arranged at the center of the first bottom wall 11, for example, the air inlet hole 110 is directly communicated with the first air channel 101 and the second air channel 102.

[0080] Specifically, as shown, Figures 9 to 14As shown, the connection between the first sub-cover 10, the second sub-cover 20, and the third sub-cover 30 in this embodiment can be as follows: a first connecting wall 35 is provided between the first sidewall 12 and the second sidewall 22 to connect the first sidewall 12 and the second sidewall 22; a second connecting wall 36 is provided between the second sidewall 22 and the third sidewall 32 to connect the second sidewall 22 and the third sidewall 32; the first connecting wall 35 has a first vent 351 communicating with the first air passage 101, so that the gas in the first air passage 101 can reach the air outlet 104 through the first vent 351 to achieve gas discharge; the second connecting wall 36 has a second vent 361 communicating with the second air passage 102, so that the gas in the second air passage 102 can reach the air outlet 104 through the second vent 361 to achieve gas discharge. That is, when the air inlet 110 is located at the center of the first bottom wall 11, the first sub-cover 10, the second sub-cover 20 and the third sub-cover 30 can be connected on the periphery. For example, connecting walls (the first connecting wall 35, the second connecting wall 36 or the sub-connecting wall 37 mentioned above) are respectively provided between the first side wall 12 and the second side wall 22 and between the second side wall 22 and the third side wall 32. Ventilation holes (first vent 351 or second vent 361) are provided in the connecting walls or ventilation holes (second gap 38) are formed at intervals in the connecting walls to facilitate the flow of gas in the first air passage 101 and the second air passage 102.

[0081] In any of the above embodiments, the width of the first airway W1 and the width of the second airway W2 are both less than or equal to 5 mm, so as to form a narrow gas channel.

[0082] like Figures 1 to 8 As shown, in any of the above embodiments, the first sub-cover 10, the second sub-cover 20, and the third sub-cover 30 can be integrally formed structures or fixedly connected by welding or other methods.

[0083] The first sub-cover 10 and the second sub-cover 20, as well as the second sub-cover 20 and the third sub-cover 30, can also be detachably connected. Detachable connections are preferred to facilitate disassembly, assembly, and maintenance.

[0084] Specifically, one of the first sub-cover body 10 and the second sub-cover body 20 has the first boss 14, and the other has the first annular protrusion 24, the first annular protrusion 24 is matched and connected with the first boss 14, for example, the first boss 14 is clamped in the inside of the first annular protrusion 24, to realize the detachable connection of the two. One of the second sub-cover body 20 and the third sub-cover body 30 has the second boss 23, and the other has the second annular protrusion 34, the second annular protrusion 34 is matched and connected with the second boss 23, for example, the second boss 23 is clamped in the inside of the second annular protrusion 34, to realize the detachable connection of the two, which is simple in structure and convenient to install. In other embodiments, the first sub-cover body 10 and the second sub-cover body 20, and the second sub-cover body 20 and the third sub-cover body 30 can also be connected in a threaded connection, plug-in connection and the like.

[0085] In a specific embodiment, the first bottom wall 11, the second bottom wall 21 and the third bottom wall 31 are all planes and are arranged in parallel to each other, the plane formed airway wall is smoother, so that the air outlet effect is better; the first side wall 12, the second side wall 22 and the third side wall 32 are all arranged obliquely relative to the first bottom wall 11, the second bottom wall 21 and the third bottom wall 31, and the first side wall 12, the second side wall 22 and the third side wall 32 are arranged in parallel to each other. On the one hand, it is convenient for the first sub-cover body 10, the second sub-cover body 20 and the third sub-cover body 30 to be installed, and on the other hand, the first airway 101 and the second airway 102 can be arranged in parallel and obliquely, thereby facilitating air outlet.

[0086] As shown in Figure 15 The application also provides a stove burner 200, which comprises the central fire cover 100 described in any of the above embodiments. The stove burner 200 can further comprise a mounting bracket 202, an air inlet pipe 204, an outer ring fire cover 201 arranged at the periphery of the central fire cover 100, etc., wherein the center of the mounting bracket 202 has a mixing cavity 203 matched with the first extension 13 of the central fire cover 100, and the top of the mixing cavity 203 can be provided with an inner flame burner (not shown in the figure), and the central fire cover 100 can stabilize the flame of the inner flame burner, prevent the flame from being extinguished, and at the same time improve the combustion quality and efficiency. The periphery of the mixing cavity 203 has a mounting cavity 205 of an outer ring burner (not shown in the figure), and the outer ring fire cover 201 can be arranged on the outer ring burner, thereby improving the combustion quality and efficiency of the outer ring burner. The periphery or bottom of the mounting bracket 202 can further be provided with a supporting leg 2021 to support the mounting bracket 202 and other components mounted thereon. The number of the air inlet pipes 204 can be two, one of which is communicated with the mixing cavity 203 of the inner flame burner, and the other is communicated with the outer ring burner, thereby respectively supplying air to the inner flame burner and the outer ring burner. The stove burner 200 can further comprise other components, which can be flexibly arranged according to the structure of the stove burner 200, and the application does not limit this.

[0087] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0088] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0089] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0090] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0091] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0092] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A center burner cap for a cooktop burner, characterized by, The center fire cap comprises: an air inlet hole; a first air passage and a second air passage arranged adjacently and at intervals; wherein the air inlet hole is in communication with the first air passage and the second air passage.

2. The center fire primer cup of claim 1 wherein, The first air passage and the second air passage are arranged along the circumference of the center fire cap to form an annular first air passage and an annular second air passage; wherein the first air passage is arranged at the outer ring of the second air passage; the air outlet directions of the first air passage and the second air passage are consistent.

3. The center fire primer cover of claim 1 wherein, The distance between the first center line of the first air passage along the depth direction and the second center line of the second air passage along the depth direction is 0.5-1.5 times the width of the first air passage or the width of the second air passage.

4. The center burner cap of claim 1 wherein, The distance between the first center line of the first air passage along the depth direction and the second center line of the second air passage along the depth direction is 3-8 mm.

5. The center burner cap of any one of claims 1 to 4, wherein, The center fire cap comprises: a first sub-cover body, a second sub-cover body and a third sub-cover body arranged in layers, the first sub-cover body and the second sub-cover body are arranged at intervals to form the first air passage; the second sub-cover body and the third sub-cover body are arranged at intervals to form the second air passage; wherein the second sub-cover body separates the first air passage from the second air passage.

6. The center burner cap of claim 5 wherein, The first sub-cover body comprises a first bottom wall and a first side wall, the air inlet hole is arranged on the first bottom wall; the second sub-cover body has a plurality of through holes, the first air passage communicates with the second air passage through the through holes.

7. A center burner cap as defined in claim 6 wherein, The second sub-cover body comprises a second bottom wall and a second side wall, the second side wall is arranged obliquely relative to the second bottom wall, the through holes are annularly arranged on the second side wall; a plurality of air inlet holes are annularly arranged on the first bottom wall.

8. The center burner cap of claim 6 wherein, The second sub-cover body comprises a second bottom wall and a second side wall, a plurality of through holes are annularly arranged on the second bottom wall.

9. The center burner cap of claim 8 wherein, The air inlet hole comprises: a first air inlet hole and a second air inlet hole, the first air inlet hole is in communication with the first air passage, the second air inlet hole is in communication with the through hole and the second air passage in sequence; wherein a plurality of first air inlet holes and a plurality of second air inlet holes are annularly arranged on the first bottom wall, and a plurality of first air inlet holes are arranged at the periphery of a plurality of second air inlet holes.

10. The center burner cap of claim 9, wherein, An annular partition is arranged between the first air inlet hole and the second air inlet hole, the two ends of the annular partition abut against the first bottom wall and the second bottom wall respectively to separate a plurality of first air inlet holes from a plurality of second air inlet holes.

11. A center burner cap according to any one of claims 1 to 10, characterized in that The width of the first air passage and the width of the second air passage are both less than or equal to 5 mm.

12. A center burner cap according to any one of claims 1 to 10, characterized in that The first air passage and the second air passage are arranged in parallel.

13. The center fire primer cup of claim 7 or 8 wherein, The first sub-cover body, the second sub-cover body and the third sub-cover body are arranged in layers, and the first sub-cover body and the second sub-cover body, and the second sub-cover body and the third sub-cover body are detachably connected.

14. The center burner cap of claim 13, wherein, One of the first sub-cover body and the second sub-cover body has a first boss, and the other has a first annular protrusion matched with the first boss to achieve detachable connection; one of the second sub-cover body and the third sub-cover body has a second boss, and the other has a second annular protrusion matched with the second boss to achieve detachable connection.

15. The center burner cap of claim 13, wherein: The third sub-cover body comprises: a third bottom wall and a third side wall, which surround to form a containing groove for containing overflow liquid.

16. The central fire cover according to claim 7, wherein: the air inlet hole is arranged at the center of the first bottom wall and communicates with the first air passage; or the air inlet hole is arranged at the center of the first bottom wall and communicates with both the first air passage and the second air passage.

17. The center burner cap of claim 16, wherein, a first connecting wall is arranged between the first side wall and the second side wall to connect the first side wall and the second side wall; and / or the third sub-cover body comprises a third bottom wall and a third side wall, and a second connecting wall is arranged between the second side wall and the third side wall to connect the second side wall and the third side wall; wherein the first connecting wall has an air vent communicating with the first air passage, and the second connecting wall has an air vent communicating with the second air passage.

18. A cooktop burner, characterized by The central fire cover according to any one of claims 1 to 17.

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