Burner and Gas Stove

Abstract

The present invention provides a burner and a gas stove. The burner includes a first burner cap, a gas distribution plate, a buffer portion and a pilot hole. The gas distribution plate is disposed on one side of the first burner cap, and the gas distribution plate and the first burner cap form a first gas chamber. The buffer portion is located in the first gas chamber, and the buffer portion has a buffer chamber. The pilot hole is provided on the first burner cap, and the pilot hole communicates with the first gas chamber through the buffer chamber. In this application, by providing a buffer portion between the pilot hole and the first gas chamber, the buffer portion buffers the combustible gas with a large air flow rate and a high gas flow velocity from the first gas chamber, so that the flow rate and flow velocity of the combustible gas passing through the pilot hole will not be too large, avoiding flashback or flameout caused by the combustible gas with a high flow velocity and a large flow rate, thereby ensuring the flame transfer success rate at the pilot hole. At the same time, it will not affect the combustion efficiency of the gas stove having this burner, enabling the flue gas generated by the gas stove to be normally discharged and ensuring the normal use performance of the gas stove.

Description

Technical Field

[0001] The present invention relates to the technical field of gas stoves, and in particular, to a burner and a gas stove. Background Art

[0002] Currently, the burner includes a central burner cap and an outer ring burner cap located outside the central burner cap. The central burner cap can form a central flame. During use, it is necessary to transfer the central flame to the outer ring burner cap to form an outer ring flame.

[0003] However, since there are pilot holes on the outer ring burner cap, gas can enter between the central burner cap and the outer ring burner cap through the pilot holes. However, when the gas flow velocity or gas flow rate through the pilot holes is too large, the flame transferred to the pilot holes is likely to lift off or blow out during combustion, making it difficult to ensure successful flame transfer.

[0004] Regarding the problem of how to improve the flame transfer success rate, it is common to adjust the opening degree of the air damper of the gas stove with a burner. However, if the opening degree of the air damper is adjusted smaller, the combustion efficiency of the gas stove will be reduced, which is not conducive to the emission of flue gas and directly reduces the performance of the gas stove.

[0005] Therefore, on the premise of not affecting other performance of the gas stove, how to effectively improve the flame transfer success rate of the burner has become an urgent problem to be solved. Summary of the Invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0007] To this end, in the first aspect of the present invention, a burner is proposed.

[0008] In the second aspect of the present invention, a gas stove is proposed.

[0009] In view of this, according to the first aspect of the present invention, a burner is provided, which includes a first burner cap, a gas distribution plate, a buffer part, and a pilot hole. Among them, the gas distribution plate is arranged on one side of the first burner cap, and the gas distribution plate and the first burner cap form a first gas cavity. The buffer part is located in the first gas cavity, and the buffer part has a buffer cavity. The pilot hole is arranged on the first burner cap, and the pilot hole is communicated with the first gas cavity through the buffer cavity.

[0010] The burner provided by the present invention includes a first burner cap, a gas distribution plate, a buffer portion, and a pilot hole. The gas distribution plate is disposed on one side of the first burner cap. It should be noted that at least a part of the gas distribution plate is located below the first burner cap in the vertical direction. The gas distribution plate is connected to the first burner cap to form a first gas chamber. Specifically, when the first burner cap is annular, the first gas chamber is an annular chamber. Specifically, the gas distribution plate has at least one gas distribution channel, and combustible gas can be transported to the first gas chamber along one of the at least one gas distribution channels to enable the first burner cap to form a flame. Specifically, the combustible gas can be liquefied petroleum gas, coal gas, natural gas, etc. Further, the burner further includes a buffer portion located in the first gas chamber. The buffer portion has a buffer chamber. It should be noted that the pressure borne by the buffer chamber is less than the pressure borne by the first gas chamber. It should be noted that the buffer portion can form the buffer chamber by itself, or the buffer portion can jointly form the buffer chamber with the first burner cap and / or the gas distribution plate, which can be selected according to actual situations. Further, the pilot hole is provided on the first burner cap, and the pilot hole communicates with the first gas chamber through the buffer chamber. In this application, by providing a buffer portion between the pilot hole and the first gas chamber, the buffer portion buffers the combustible gas with a large air flow rate and a high gas flow velocity from the first gas chamber, so that the flow rate and flow velocity of the combustible gas passing through the pilot hole will not be too large, avoiding the occurrence of flame lift-off or flame extinction caused by the combustible gas with a high flow rate and a large flow rate, thereby ensuring the flame transfer success rate at the pilot hole. At the same time, it will not affect the combustion efficiency of the gas stove having this burner, enabling the flue gas generated by the gas stove to be normally discharged and ensuring the normal use performance of the gas stove.

[0011] In a possible design, further, the buffer portion is disposed on the first burner cap and / or the gas distribution plate. The buffer portion further includes an air inlet and an air outlet communicating with the buffer chamber. The air inlet communicates with the first gas chamber, and the air outlet communicates with the pilot hole.

[0012] In this design, the buffer part is located in the first gas chamber. The specific setting position of the buffer part is diverse, and the specific composition mode of the buffer chamber is also diverse. Specifically, the buffer part can be arranged on the first burner cap. The buffer chamber can be jointly formed by the buffer part and a part of the first burner cap. At this time, during the manufacturing process, the first burner cap with the buffer part can be manufactured simultaneously, reducing the assembly difficulty and the number of components. That is to say, at this time, the first burner cap and the buffer part form an integral structure. Or, the buffer part can be arranged on the gas distribution plate. The buffer chamber can be jointly formed by the buffer part and a part of the gas distribution plate. Similarly, the gas distribution plate with the buffer part can also reduce the assembly difficulty and the number of components. Or, the buffer part can be arranged on the gas distribution plate or the first burner cap. The buffer chamber can be jointly formed by the buffer part, a part of the gas distribution plate, and a part of the first burner cap. Since the first burner cap and the gas distribution plate are detachably connected, the buffer chamber is formed by assembling the first burner cap and the gas distribution plate. That is, when the first burner cap and the gas distribution plate are separated from each other, the buffer chamber can be exposed, so that it is convenient for users to clean the inside of the buffer chamber, etc.

[0013] Furthermore, the buffer part includes an air inlet and an air outlet. The air inlet is communicated with the first gas chamber, and the air outlet is communicated with the pilot hole. The combustible gas from the first gas chamber enters the buffer chamber through the air inlet. The combustible gas in the buffer chamber is then transmitted to the pilot hole through the air outlet. The combustible gas contacts the flame at the pilot hole, so as to be successfully ignited and achieve successful flame transfer.

[0014] In a possible design, furthermore, the buffer part and a part of the first burner cap form the buffer chamber; or, the buffer part and a part of the gas distribution plate form the buffer chamber; or, the buffer part, a part of the first burner cap, and a part of the gas distribution plate form the buffer chamber.

[0015] In this design, the buffer part is located in the first gas chamber. The specific setting position of the buffer part is diverse, and the specific composition mode of the buffer chamber is also diverse. Specifically, the buffer part can be arranged on the first burner cap. The buffer chamber can be jointly formed by the buffer part and a part of the first burner cap. At this time, during the manufacturing process, the first burner cap with the buffer part can be manufactured simultaneously, reducing the assembly difficulty and the number of components. That is to say, at this time, the first burner cap and the buffer part form an integral structure. Or, the buffer part can be arranged on the gas distribution plate. The buffer chamber can be jointly formed by the buffer part and a part of the gas distribution plate. Similarly, the gas distribution plate with the buffer part can also reduce the assembly difficulty and the number of components. Or, the buffer part can be arranged on the gas distribution plate or the first burner cap. The buffer chamber can be jointly formed by the buffer part, a part of the gas distribution plate, and a part of the first burner cap. Since the first burner cap and the gas distribution plate are detachably connected, the buffer chamber is formed by assembling the first burner cap and the gas distribution plate. That is, when the first burner cap and the gas distribution plate are separated from each other, the buffer chamber can be exposed, so that it is convenient for users to clean the inside of the buffer chamber, etc.

[0016] In a possible design, further, the buffer part and the first burner cap or the gas distribution plate are of an integral structure.

[0017] In this design, the buffer part is arranged on the first burner cap. The buffer part can form a buffer cavity with the first burner cap, or the buffer part, the first burner cap and the gas distribution plate form a buffer cavity. By making the buffer part and the first burner cap of an integral structure, since the mechanical properties of the integral structure are good, the connection strength between the buffer part and the first burner cap can be improved. In addition, the buffer part and the first burner cap can be integrally manufactured and mass-produced to improve the processing efficiency of the product and reduce the processing cost of the product. Moreover, by designing the buffer part and the first burner cap as an integrally formed integral structure, the integrity can also be improved, the number of parts can be reduced, the installation process can be reduced, the installation efficiency can be improved, and the installation between each part is more convenient and reliable. Similarly, when the buffer part is arranged on the gas distribution plate, the buffer part can form a buffer cavity with the gas distribution plate, and the buffer part can also jointly form a buffer cavity with the gas distribution plate and the first burner cap. When the buffer part and the gas distribution plate are of an integral structure, the beneficial effects are the same as above and will not be repeated.

[0018] In a possible design, further, the ignition hole includes a first ignition port and a second ignition port facing away from each other. The first ignition port is closer to the buffer cavity than the second ignition port, and the second ignition port is farther from the gas distribution plate than the first ignition port.

[0019] In this design, the ignition hole includes a first ignition port and a second ignition port facing away from each other. The first ignition port is arranged closer to the buffer cavity than the second ignition port. Combustible gas enters the interior of the ignition hole from the buffer cavity via the air outlet and the first ignition port. It should be noted that the ignition hole is in a long strip shape. The second ignition port is communicated with the outside, and the flame will meet the combustible gas at the second ignition port, thus achieving successful flame transfer. Further, the second ignition port is farther from the gas distribution plate than the first ignition port. That is to say, in the vertical direction, the second ignition port is located above the first ignition port. That is, the channel formed by the ignition hole itself extends obliquely upward relative to the horizontal plane. Then the combustible gas needs to be conveyed obliquely upward. During the flow process inside the ignition hole, the gas flow rate and the gas flow velocity can be further controlled, so that the combustible gas reaching the second ignition port will not affect the flame and avoid the occurrence of flame detachment and flashback phenomena, further improving the success rate of flame transfer.

[0020] In a possible design, further, the first burner cap includes a first cover body and a first side cover body. The first side cover body is arranged on the side wall of the first cover body close to the center of the first cover body. The first side cover body extends towards the gas distribution plate, and at least a part of the ignition hole is arranged on the first side cover body.

[0021] In this design, the first burner cap includes a first cap body and a first side cap body. The first cap body is annular, and there is a gap between the first cap body and the gas distribution plate, so that a first gas chamber can be formed. For the annular first cap body, the first cap body includes an inner ring wall and an outer ring wall. Among them, the inner ring wall is the side wall of the first cap body close to the center of the first cap body, and the outer ring wall is the side wall of the first cap body far from the center of the first cap body. The first side cap body is arranged on the inner ring wall of the first cap body, that is, the first side cap body is also annular. The first side cap body extends in the direction towards the gas distribution plate, so that the first cap body, the first side cap body and the gas distribution plate form the first gas chamber. Specifically, the direction of the first side cap body towards the gas distribution plate can be vertically downward. Of course, the first side cap body can also extend obliquely downward or bend and extend. Further, at least a part of the ignition holes is arranged on the first side cap body. Specifically, the second ignition port of the ignition hole is arranged on the first side cap body. The ignition hole further includes an ignition channel located between the first ignition port and the second ignition port. At least a part of the ignition channel is arranged on the first side cap body, and at least a part of the ignition channel can also be arranged on the first cap body. By arranging the second ignition port on the first side cap body, that is, for the first burner cap, the inner ring wall includes the second ignition port, the combustible gas will be guided to the inner ring wall of the first burner cap, so that a flame is formed at the inner wall of the first burner cap.

[0022] In a possible design, further, the first burner cap further includes a second side cap body and a plurality of flame transfer holes. The second side cap body is arranged on the first cap body relative to the first side cap body. The second side cap body, the first cap body and the first side cap body form a part of the first gas chamber. The plurality of flame transfer holes are arranged at intervals on the second side cap body and / or the first cap body, and the plurality of flame transfer holes communicate with the first gas chamber.

[0023] In this design, the first burner cap further includes a second side cap body. The second side cap body is arranged on the outer ring wall of the first cap body, that is, the second side cap body is annular. The second side cap body extends in the direction towards the gas distribution plate, so that it can form a part of the first gas chamber with the first side cap body and the first cap body. Specifically, the direction of the second side cap body towards the gas distribution plate can be vertically downward. Of course, the second side cap body can also extend obliquely downward or bend and extend. Further, a plurality of flame transfer holes are arranged on the second side cap body. The plurality of flame transfer holes are arranged at intervals on the second side cap body and / or the first cap body, and each flame transfer hole communicates with the first gas chamber. A part of the combustible gas in the first gas chamber will be transferred to the flame transfer holes, so that a flame is formed at the outer ring wall of the first burner cap. That is to say, for the first burner cap, two circles of flames will be formed. The first circle of flames is located at the inner ring of the first burner cap, and the second circle of flames is located at the outer ring of the first burner cap.

[0024] In a possible design, further, the first burner cap further includes a flame stabilizing groove. The flame stabilizing groove is arranged on the second side cap body and / or the first cap body, and the flame stabilizing groove communicates with the first gas chamber.

[0025] In this design, a flame stabilizing groove with an opening facing outwards is provided on the outer side wall of the first burner head. The flame stabilizing groove is annular and communicates with the first gas chamber. A part of the combustible gas in the first gas chamber is delivered to the flame stabilizing groove, and the combustible gas in the flame stabilizing groove is ignited. Further, the flame transfer hole is located above the flame stabilizing groove, that is, the flame transfer hole is located on the side of the flame stabilizing groove away from the gas distribution plate. After the combustible gas in the flame transfer hole flows out, it can be ignited by the flame at the flame stabilizing groove. That is to say, the flame stabilizing groove can transfer the flame to the flame transfer hole.

[0026] In a possible design, further, the first burner head further includes a gas transmission channel, and the gas transmission channel is provided on the first cover body and / or the second side cover body. The flame stabilizing groove communicates with the first gas chamber through the gas transmission channel, wherein the extending direction of the gas transmission channel is different from the extending direction of the flame stabilizing groove.

[0027] In this design, the first burner head further includes a gas transmission channel, and the gas transmission channel is provided on the first cover body and / or the second side cover body. The two opposite ends in the gas transmission channel are respectively communicated with the flame stabilizing groove and the first gas chamber. That is to say, the combustible gas in the flame stabilizing groove is transmitted from the first gas chamber through the gas transmission channel. The gas transmission channel can provide a continuous supply of gas for the flame stabilizing groove, and at the same time, it is also beneficial for the flame stabilizing groove to quickly transfer the flame to the flame transfer hole to ignite the combustible gas flowing out of the flame transfer hole. Further, the extending direction of the gas transmission channel is different from the extending direction of the flame stabilizing groove. That is to say, when the combustible gas moves along the gas transmission channel into the flame stabilizing groove, the flow path includes a bend, which can reduce the gas flow rate of the combustible gas flowing to the flame stabilizing groove to a certain extent, and avoid the occurrence of flame lift-off or flashback in the flame stabilizing groove.

[0028] In a possible design, further, the burner further includes a second burner head, a flame transfer groove and a pressure reducing chamber. The second burner head is provided on the gas distribution plate and is located inside the first burner head. The flame transfer groove is provided on the first burner head and extends in a direction away from the second burner head. The pressure reducing chamber is provided on the first burner head, and the flame transfer groove communicates with the first gas chamber through the pressure reducing chamber.

[0029] In this design, the burner further includes a second burner cap, which is arranged inside the generally annular first burner cap. That is to say, the second burner cap is the inner burner cap, and the first burner cap is the outer burner cap. The second burner cap is arranged on the gas distribution plate. The second burner cap can form a second gas chamber with a part of the gas distribution plate. The combustible gas in the second gas chamber can be transported to the second burner cap and thus be ignited at the second burner cap. During the operation of the burner, a flame is first formed at the second burner cap, and the flame needs to be transmitted from the second burner cap to the first burner cap, that is, from the inside to the outside. The flame transfer groove extends radially through the first cover body of the first burner cap. If the combustion flame formed by the second burner cap is directly discharged from the flame transfer groove, the combustion flame is likely to be extinguished and separated from the flame. By connecting the flame transfer groove to the first gas chamber through the decompression chamber, the flow rate of the combustible gas in the flame transfer groove can be reduced, and the flame stability performance of the combustion flame at the flame transfer groove can be improved, solving the problem of flame transfer interruption caused by the too fast flow rate of the combustible gas at the flame transfer groove, playing a very good stabilizing role on the flame at the flame transfer groove, and thus enhancing the applicability of the air damper opening of the gas stove. That is to say, under the condition of a larger air damper opening, the success rate of flame transfer can also be ensured. It should be noted that the high-flow and high-velocity combustible gas in the first gas chamber can be decelerated and depressurized in the decompression chamber, so that the combustible gas will not affect the combustion flame when it is transmitted to the flame transfer groove. Specifically, the pressure borne by the decompression chamber is less than the pressure borne by the first gas chamber.

[0030] In a possible design, further, the decompression chamber is located on the side of the flame transfer groove facing the gas distribution plate.

[0031] In this design, the decompression chamber is located on the side of the flame transfer groove facing the gas distribution plate, that is, the decompression chamber is located below the flame transfer groove, with a simple structure and easy to process and operate on the first burner cap.

[0032] In a possible design, further, the decompression chamber includes a low-pressure chamber and at least one communication channel. The low-pressure chamber is communicated with the flame transfer groove, and the low-pressure chamber is communicated with the first gas chamber through at least one communication channel.

[0033] In this design, the decompression chamber includes a low-pressure chamber and at least one communication channel. The low-pressure chamber is located directly below the flame transfer groove, and at least one communication channel realizes the communication between the low-pressure chamber and the first gas chamber. Through the communication channel, the reasonable layout of each structure on the first burner cap can be flexibly responded to. The volume of the low-pressure chamber is relatively large and can be used to buffer the pressure, so that the flow rate of the combustible gas is reduced. The flow area of the communication channel is relatively small, which is convenient for structural avoidance. Specifically, the number of communication channels is two, and the two communication channels are spaced apart and opened on the first burner cap.

[0034] In a possible design, further, at least a part of the wall of the low-pressure chamber is an arc-shaped wall.

[0035] In this design, the low-pressure chamber includes a chamber wall, and at least a part of the chamber wall is composed of an arc-shaped wall. When the combustible gas enters the low-pressure chamber from the first gas chamber through the communication channel, the arc-shaped wall can reduce the flow resistance of the combustible gas and also avoid problems such as the formation of vortices inside the low-pressure chamber that may generate noise.

[0036] In a possible design, further, the number of pilot holes is multiple, and the second pilot openings of the multiple pilot holes are arranged around the fire transfer groove.

[0037] In this design, the number of pilot holes is multiple, and the second pilot openings of the multiple pilot holes are located on the first side cover of the first burner cap. The multiple second pilot openings are arranged around the end of the fire transfer groove close to the second burner cap, so that they can be quickly ignited by the combustion flame in the fire transfer groove.

[0038] According to the second aspect of the present invention, there is provided a gas stove including the burner provided by any of the above designs.

[0039] The gas stove provided by the present invention includes the burner provided by any of the above designs, and thus has all the beneficial effects of this burner, which will not be elaborated here.

[0040] The additional aspects and advantages of the present invention will become apparent in the following description section, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0042] Figure 1 Shows an exploded schematic view of the structure of the burner in an embodiment according to the present invention;

[0043] Figure 2 Shows Figure 1 The enlarged partial view of the burner at A in an embodiment according to the present invention shown;

[0044] Figure 3 Shows Figure 1 The enlarged partial view of the burner at B in an embodiment according to the present invention shown;

[0045] Figure 4 Shows a longitudinal section view of the burner in an embodiment according to the present invention;

[0046] Figure 5 Shows Figure 4 The enlarged partial view of the burner at C in an embodiment according to the present invention shown;

[0047] Figure 6Shows a top view of a burner according to an embodiment of the present invention;

[0048] Figure 7 Shows a side view of a burner according to an embodiment of the present invention.

[0049] Wherein, Figures 1 to 7 The corresponding relationship between the reference numerals and the component names in the figure is as follows:

[0050] 100 Burner,

[0051] 110 First fire cover,

[0052] 111 First cover body,

[0053] 112 First side cover body,

[0054] 113 Second side cover body,

[0055] 114 Flame transfer hole,

[0056] 115 Flame stabilizing groove,

[0057] 116 Gas transmission channel,

[0058] 117 Flame transfer groove,

[0059] 118 Pressure reducing cavity, 118a Low pressure cavity, 118b Connecting channel,

[0060] 120 Gas distributing plate,

[0061] 131 First gas cavity, 132 Second gas cavity,

[0062] 140 Buffer part, 141 Buffer cavity, 142 Air inlet, 143 Air outlet,

[0063] 150 Pilot hole, 151 First pilot hole, 152 Second pilot hole,

[0064] 160 Second fire cover. Detailed implementation manners

[0065] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0066] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0067] The following refers toFigures 1 to 7 Describe the burner 100 and the gas stove provided according to some embodiments of the present invention.

[0068] An embodiment of the present application provides a burner 100, as Figure 1 , Figure 4 and Figure 5 shown, which includes a first burner cap 110, a gas distribution plate 120, a buffer portion 140 and a pilot hole 150. Among them, the gas distribution plate 120 is arranged on one side of the first burner cap 110, and the gas distribution plate 120 and the first burner cap 110 form a first gas chamber 131. The buffer portion 140 is located in the first gas chamber 131, and the buffer portion 140 has a buffer chamber 141. The pilot hole 150 is arranged on the first burner cap 110, and the pilot hole 150 communicates with the first gas chamber 131 through the buffer chamber 141.

[0069] The burner 100 provided by the present invention includes a first burner cap 110, a gas distribution plate 120, a buffer portion 140 and a pilot hole 150. The gas distribution plate 120 is arranged on one side of the first burner cap 110. It should be noted that along the vertical direction, at least a part of the gas distribution plate 120 is located below the first burner cap 110. The gas distribution plate 120 is connected to the first burner cap 110 and forms a first gas chamber 131. Specifically, when the first burner cap 110 is annular, the first gas chamber 131 is an annular chamber. Specifically, the gas distribution plate 120 has at least one gas distribution channel, and the combustible gas can be transported into the first gas chamber 131 along one of the at least one gas distribution channels to form a flame on the first burner cap 110. Specifically, the combustible gas can be liquefied petroleum gas, coal gas, natural gas and other gases. Further, the burner 100 further includes a buffer portion 140. The buffer portion 140 is located in the first gas chamber 131, and the buffer portion 140 has a buffer chamber 141. It should be noted that the pressure borne by the buffer chamber 141 is less than the pressure borne in the first gas chamber 131. It should be noted that the buffer portion 140 can form the buffer chamber 141 by itself, or the buffer portion 140 can jointly form the buffer chamber 141 with the first burner cap 110 and / or the gas distribution plate 120, which can be selected according to the actual situation. Further, the pilot hole 150 is arranged on the first burner cap 110, and the pilot hole 150 communicates with the first gas chamber 131 through the buffer chamber 141. In the present application, by arranging the buffer portion 140 between the pilot hole 150 and the first gas chamber 131, the buffer portion 140 buffers the combustible gas with a large air flow rate and a high gas flow velocity from the first gas chamber 131, so that the flow rate and flow velocity of the combustible gas passing through the pilot hole 150 will not be too large, avoiding the flame lift-off or flameout caused by the combustible gas with a high flow rate and a large flow volume, and further ensuring the fire transfer success rate at the pilot hole 150. At the same time, it will not affect the combustion efficiency of the gas stove having the burner 100, so that the flue gas generated by the gas stove can be discharged normally, ensuring the normal use performance of the gas stove.

[0070] Further, as Figure 1 and Figure 4 shown, the buffer part 140 is provided on the first burner cap 110 and / or the gas distribution plate 120. The buffer part 140 further includes an air inlet 142 and an air outlet 143 that communicate with the buffer cavity 141. The air inlet 142 communicates with the first gas cavity 131, and the air outlet 143 communicates with the pilot hole 150.

[0071] In this embodiment, the buffer part 140 is located in the first gas cavity 131. The specific setting position of the buffer part 140 is diversified, and the specific constitution mode of the buffer cavity 141 is diversified. Specifically, the buffer part 140 can be provided on the first burner cap 110, and the buffer cavity 141 can be jointly formed by the buffer part 140 and a part of the first burner cap 110. At this time, during the preparation process, the first burner cap 110 with the buffer part 140 can be manufactured simultaneously, reducing the assembly difficulty and the number of components. That is to say, at this time, the first burner cap 110 and the buffer part 140 form an integral structure. Alternatively, the buffer part 140 can be provided on the gas distribution plate 120, and the buffer cavity 141 can be jointly formed by the buffer part 140 and a part of the gas distribution plate 120. Similarly, the gas distribution plate 120 with the buffer part 140 can also reduce the assembly difficulty and the number of components. Alternatively, the buffer part 140 can be provided on the gas distribution plate 120 or the first burner cap 110, and the buffer cavity 141 can be jointly formed by the buffer part 140, a part of the gas distribution plate 120, and a part of the first burner cap 110. Since the first burner cap 110 and the gas distribution plate 120 are detachably connected, the buffer cavity 141 can be formed by assembling the first burner cap 110 and the gas distribution plate 120. That is, when the first burner cap 110 and the gas distribution plate 120 are separated from each other, the buffer cavity 141 can be exposed, so that it is convenient for the user to clean the inside of the buffer cavity 141, etc.

[0072] Further, as Figure 1 , Figure 3 , Figure 4 and Figure 5 shown, the buffer part 140 includes an air inlet 142 and an air outlet 143. The air inlet 142 communicates with the first gas cavity 131, and the air outlet 143 communicates with the pilot hole 150. The combustible gas from the first gas cavity 131 enters the buffer cavity 141 through the air inlet 142. The combustible gas in the buffer cavity 141 is then transmitted to the pilot hole 150 through the air outlet 143. The combustible gas contacts the flame at the pilot hole 150, so as to be successfully ignited and achieve successful flame transfer.

[0073] Further, the buffer part 140 and a part of the first burner cap 110 form the buffer cavity 141; or, the buffer part 140 and a part of the gas distribution plate 120 form the buffer cavity 141; or, the buffer part 140, a part of the first burner cap 110, and a part of the gas distribution plate 120 form the buffer cavity 141.

[0074] In this embodiment, the buffer part 140 is located in the first gas chamber 131. The specific setting position of the buffer part 140 is diversified, and the specific composition mode of the buffer chamber 141 is diversified. Specifically, the buffer part 140 can be arranged on the first burner cap 110, and the buffer chamber 141 can be jointly formed by the buffer part 140 and a part of the first burner cap 110. At this time, during the manufacturing process, the first burner cap 110 with the buffer part 140 can be manufactured simultaneously, reducing the assembly difficulty and the number of components. That is to say, at this time, the first burner cap 110 and the buffer part 140 form an integral structure. Or, the buffer part 140 can be arranged on the gas distribution plate 120, and the buffer chamber 141 can be jointly formed by the buffer part 140 and a part of the gas distribution plate 120. Similarly, the gas distribution plate 120 with the buffer part 140 can also reduce the assembly difficulty and the number of components. Or, the buffer part 140 can be arranged on the gas distribution plate 120 or the first burner cap 110, and the buffer chamber 141 can be jointly formed by the buffer part 140, a part of the gas distribution plate 120, and a part of the first burner cap 110. Since the first burner cap 110 and the gas distribution plate 120 are detachably connected, the buffer chamber 141 can be formed by assembling the first burner cap 110 and the gas distribution plate 120. That is, when the first burner cap 110 and the gas distribution plate 120 are separated from each other, the buffer chamber 141 can be exposed, so that it is convenient for users to clean the inside of the buffer chamber 141 and the like.

[0075] Furthermore, the buffer part 140 and the first burner cap 110 or the gas distribution plate 120 are of an integral structure.

[0076] In this embodiment, the buffer part 140 is arranged on the first burner cap 110. The buffer part 140 can form the buffer chamber 141 with the first burner cap 110, or the buffer part 140, the first burner cap 110, and the gas distribution plate 120 can form the buffer chamber 141. By making the buffer part 140 and the first burner cap 110 of an integral structure, since the mechanical properties of the integral structure are good, the connection strength between the buffer part 140 and the first burner cap 110 can be improved. In addition, the buffer part 140 and the first burner cap 110 can be integrally manufactured and mass-produced to improve the processing efficiency of the product and reduce the processing cost of the product. And, by designing the buffer part 140 and the first burner cap 110 as an integrally formed integral structure, the integrity can also be improved, the number of components can be reduced, the installation process can be reduced, the installation efficiency can be improved, and the installation between each component is more convenient and reliable. Similarly, when the buffer part 140 is arranged on the gas distribution plate 120, the buffer part 140 can form the buffer chamber 141 with the gas distribution plate 120, or the buffer part 140 can also jointly form the buffer chamber 141 with the gas distribution plate 120 and the first burner cap 110. When the buffer part 140 and the gas distribution plate 120 are of an integral structure, the beneficial effects are the same as above and will not be repeated.

[0077] Further, as Figure 5 shown, the ignition hole 150 includes a first ignition port 151 and a second ignition port 152 facing away from each other. The first ignition port 151 is closer to the buffer chamber 141 than the second ignition port 152, and the second ignition port 152 is farther from the gas distribution plate 120 than the first ignition port 151.

[0078] In this embodiment, the ignition hole 150 includes a first ignition port 151 and a second ignition port 152 facing away from each other. The first ignition port 151 is arranged closer to the buffer chamber 141 than the second ignition port 152. Combustible gas enters the interior of the ignition hole 150 from the buffer chamber 141 through the air outlet 143 and the first ignition port 151. It should be noted that the ignition hole 150 is in a long strip shape. The second ignition port 152 is in communication with the outside, and the flame will meet the combustible gas at the second ignition port 152, thus achieving successful flame transmission. Further, the second ignition port 152 is farther from the gas distribution plate 120 than the first ignition port 151. That is to say, in the vertical direction, the second ignition port 152 is located above the first ignition port 151. That is, the channel formed by the ignition hole 150 extends obliquely upward compared with the horizontal plane. Then, the combustible gas needs to be conveyed obliquely upward. During the flow process inside the ignition hole 150, the gas flow rate and gas flow velocity can be further controlled, so that the combustible gas reaching the second ignition port 152 will not affect the flame, avoiding the occurrence of flame separation and flashback phenomena, and further improving the success rate of flame transmission.

[0079] Further, as Figure 1 and Figure 2 shown, the first burner cap 110 includes a first cover body 111 and a first side cover body 112. The first side cover body 112 is arranged on the side wall of the first cover body 111 close to the center of the first cover body 111. The first side cover body 112 extends towards the gas distribution plate 120, and at least a part of the ignition hole 150 is arranged on the first side cover body 112.

[0080] In this embodiment, the first burner cap 110 includes a first cap body 111 and a first side cap body 112. The first cap body 111 is annular, and there is a gap between the first cap body 111 and the gas distribution plate 120, so that a first gas cavity 131 can be formed. For the annular first cap body 111, the first cap body 111 includes an inner ring wall and an outer ring wall. Among them, the inner ring wall is the side wall of the first cap body 111 close to the center of the first cap body 111, and the outer ring wall is the side wall of the first cap body 111 far from the center of the first cap body 111. The first side cap body 112 is arranged on the inner ring wall of the first cap body 111, that is, the first side cap body 112 is also annular. The first side cap body 112 extends in the direction towards the gas distribution plate 120, so that the first cap body 111, the first side cap body 112 and the gas distribution plate 120 form the first gas cavity 131. Specifically, the direction of the first side cap body towards the gas distribution plate 120 can be vertically downward. Of course, the first side cap body 112 can also extend obliquely downward or bend and extend. Further, at least a part of the ignition holes 150 is arranged on the first side cap body 112. Specifically, the second ignition port 152 of the ignition holes 150 is arranged on the first side cap body 112. The ignition holes 150 further include an ignition channel located between the first ignition port 151 and the second ignition port 152. At least a part of the ignition channel is arranged on the first side cap body 112, and at least a part of the ignition channel can also be arranged on the first cap body 111. By arranging the second ignition port 152 on the first side cap body 112, that is, for the first burner cap 110, the inner ring wall includes the second ignition port 152, the combustible gas will be guided to the inner ring wall of the first burner cap 110, so that a flame is formed at the inner wall of the first burner cap 110.

[0081] Further, as Figure 2 , Figure 4 and Figure 5 shown, the first burner cap 110 further includes a second side cap body 113 and a plurality of flame transfer holes 114. The second side cap body 113 is arranged on the first cap body 111 relative to the first side cap body 112. The second side cap body 113, the first cap body 111 and the first side cap body 112 form a part of the first gas cavity 131. The plurality of flame transfer holes 114 are arranged at intervals on the second side cap body 113 and / or the first cap body 111, and the plurality of flame transfer holes 114 communicate with the first gas cavity 131.

[0082] In this embodiment, the first fire cover 110 also includes a second side cover body 113, and the second side cover body 113 is arranged on the outer ring wall of the first cover body 111, that is, the second side cover body 113 is annular, and the second side cover body 113 extends in the direction of the gas distribution plate 120, so that it can form a part of the first combustion chamber 131 with the first side cover body 112 and the first cover body 111. Specifically, the direction of the second side cover body 113 toward the gas distribution plate 120 can be vertically downward. Of course, the second side cover body 113 can also extend obliquely downward, or bend and extend. Further, the second side cover body 113 is provided with a plurality of fire transfer holes 114, and the plurality of fire transfer holes 114 are arranged at intervals on the second side cover body 113 and / or the first cover body 111, and each fire transfer hole 114 is connected to the first combustion chamber 131. A portion of the combustible gas in the first gas chamber 131 will be transferred to the flame transfer hole 114, thereby forming a flame at the outer ring wall of the first fire cover 110. That is to say, for the first fire cover 110, two circles of flames will be formed, the first circle of flames is located at the inner ring of the first fire cover 110, and the second circle of flames is located at the outer ring of the first fire cover 110.

[0083] Furthermore, if Figure 2 , Figure 5 and Figure 7 As shown, the first fire cover 110 further includes a fire stabilizing groove 115 , which is disposed on the second side cover body 113 and / or the first cover body 111 , and the fire stabilizing groove 115 is communicated with the first combustion chamber 131 .

[0084] In this embodiment, a circle of fire stabilizing grooves 115 with openings facing outwards is provided on the outer side wall of the first fire cover 110. The fire stabilizing grooves 115 are annular and communicate with the first combustion chamber 131. A portion of the combustible gas in the first combustion chamber 131 is transported to the fire stabilizing grooves 115, and the combustible gas in the fire stabilizing grooves 115 is ignited. Furthermore, the flame transfer hole 114 is located above the fire stabilizing grooves 115, that is, the flame transfer hole 114 is located on the side of the fire stabilizing grooves 115 away from the gas distribution plate 120. After the combustible gas in the fire transfer hole 114 flows out, it can be ignited by the flame at the fire stabilizing grooves 115. In other words, the fire stabilizing grooves 115 can transfer the flame to the flame transfer hole 114.

[0085] Furthermore, if Figure 5 As shown, the first fire cover 110 also includes an air transfer channel 116, which is arranged on the first cover body 111 and / or the second side cover body 113, and the fire stabilizing groove 115 is connected to the first combustion chamber 131 through the air transfer channel 116, wherein the extension direction of the air transfer channel 116 is different from the extension direction of the fire stabilizing groove 115.

[0086] In this embodiment, the first burner cap 110 further includes a gas transmission channel 116 which is provided on the first cover body 111 and / or the second side cover body 113. The two opposite ends in the gas transmission channel 116 are respectively communicated with the flame stabilizing groove 115 and the first gas chamber 131. That is to say, the combustible gas in the flame stabilizing groove 115 enables the first gas chamber 131 to be transmitted through the gas transmission channel 116. The gas transmission channel 116 can provide a continuous supply of gas for the flame stabilizing groove 115, and at the same time, it is also beneficial for the flame stabilizing groove 115 to quickly transfer the flame to the flame transmission holes 114 to ignite the combustible gas flowing out of the flame transmission holes 114. Further, the extending direction of the gas transmission channel 116 is different from that of the flame stabilizing groove 115. That is to say, when the combustible gas moves along the gas transmission channel 116 into the flame stabilizing groove 115, the flow path includes a bend, which can reduce the gas flow rate of the combustible gas flowing to the flame stabilizing groove 115 to a certain extent, and avoid the occurrence of flame lift-off or flashback in the flame stabilizing groove 115.

[0087] Further, as Figure 1 、 Figure 2 、 Figure 6 and Figure 7 shown, the burner 100 further includes a second burner cap 160, a flame transmission groove 117 and a pressure reducing chamber 118. The second burner cap 160 is provided on the gas distribution plate 120 and is located inside the first burner cap 110. The flame transmission groove 117 is provided on the first burner cap 110 and extends in a direction away from the second burner cap 160. The pressure reducing chamber 118 is provided on the first burner cap 110, and the flame transmission groove 117 is communicated with the first gas chamber 131 through the pressure reducing chamber 118.

[0088] In this embodiment, the burner 100 further includes a second burner cap 160, which is disposed inside the generally annular first burner cap 110. That is to say, the second burner cap 160 is an inner burner cap, and the first burner cap 110 is an outer burner cap. The second burner cap 160 is disposed on the gas distribution plate 120. The second burner cap 160 can form a second gas chamber 132 with a part of the gas distribution plate 120. The combustible gas in the second gas chamber 132 can be transported to the second burner cap 160 and thus be ignited at the second burner cap 160. During the operation of the burner 100, a flame is first formed at the second burner cap 160, and the flame needs to be transmitted from the second burner cap 160 to the first burner cap 110, that is, from the inside to the outside. The flame transfer groove 117 extends radially through and is provided on the first cover body 111 of the first burner cap 110. If the combustion flame formed by the second burner cap 160 is directly discharged from the flame transfer groove 117, the combustion flame is likely to be extinguished and separated from the flame. By connecting the flame transfer groove 117 to the first gas chamber 131 through the pressure reduction chamber 118, the flow rate of the combustible gas in the flame transfer groove 117 can be reduced, the flame stabilization performance of the combustion flame at the flame transfer groove 117 can be improved, the flame transfer blockage phenomenon caused by the too fast flow rate of the combustible gas at the flame transfer groove 117 can be solved, and a good stabilizing effect on the flame at the flame transfer groove 117 can be achieved, thereby enhancing the applicability of the air damper opening of the gas stove. That is to say, under the condition of a larger air damper opening, the success rate of flame transfer can also be ensured. It should be noted that the high-flow and high-velocity combustible gas in the first gas chamber 131 can be decelerated and depressurized in the pressure reduction chamber 118, so that the combustible gas will not affect the combustion flame when it is transmitted to the flame transfer groove 117. Specifically, the pressure borne by the pressure reduction chamber 118 is less than the pressure borne by the first gas chamber 131.

[0089] Furthermore, under the combined action of the buffer chamber 141 at the pilot hole 150 and the pressure reduction chamber 118 at the flame transfer groove 117, the combustible gas with a large air flow rate and a high gas flow velocity from the first gas chamber 131 can be effectively buffered, so that the flow rate and flow velocity of the combustible gas passing through the pilot hole 150 and the flame transfer groove 117 will not be too large, avoiding the flame separation or flameout caused by the high-flow and high-velocity combustible gas, and further ensuring the success rate of flame transfer. At the same time, it will not affect the combustion efficiency of the gas stove with the burner 100, enabling the flue gas generated by the gas stove to be normally discharged and ensuring the normal use performance of the gas stove.

[0090] Furthermore, as Figure 5 shown, the pressure reduction chamber 118 is located on the side of the flame transfer groove 117 facing the gas distribution plate 120.

[0091] In this embodiment, the pressure reduction chamber 118 is located on the side of the flame transfer groove 117 facing the gas distribution plate 120, that is, the pressure reduction chamber 118 is located below the flame transfer groove 117, with a simple structure and easy to process and operate on the first burner cap 110.

[0092] Further, as Figure 5 shown, the pressure reducing chamber 118 includes a low pressure chamber 118a and at least one communication channel 118b. The low pressure chamber 118a communicates with the flame transfer groove 117, and the low pressure chamber 118a communicates with the first gas chamber 131 through at least one communication channel 118b.

[0093] In this embodiment, the pressure reducing chamber 118 includes a low pressure chamber 118a and at least one communication channel 118b. The low pressure chamber 118a is located directly below the flame transfer groove 117. At least one communication channel 118b realizes the communication between the low pressure chamber 118a and the first gas chamber 131. Through the communication channel 118b, the reasonable layout of each structure on the first burner cap 110 can be flexibly accommodated. The volume of the low pressure chamber 118a is relatively large and can be used to buffer the pressure, so that the flow rate of the combustible gas is reduced. The flow area of the communication channel 118b is relatively small, which is convenient for structural avoidance. Specifically, the number of the communication channels 118b is two, and the two communication channels 118b are spaced apart and opened on the first burner cap 110.

[0094] Further, as Figure 2 shown, at least a part of the wall of the low pressure chamber 118a is an arc-shaped wall.

[0095] In this embodiment, the low pressure chamber 118a includes a chamber wall, and at least a part of the chamber wall is formed by an arc-shaped wall. When the combustible gas enters the low pressure chamber 118a from the first gas chamber 131 through the communication channel 118b, the arc-shaped wall can reduce the flow resistance of the combustible gas and also avoid problems such as the formation of vortices in the low pressure chamber 118a that may generate noise.

[0096] Further, the number of the ignition holes 150 is multiple, and the second ignition openings 152 of the multiple ignition holes 150 are arranged around the flame transfer groove 117.

[0097] In this embodiment, the number of the ignition holes 150 is multiple, and the second ignition openings 152 of the multiple ignition holes 150 are located on the first side cover 112 of the first burner cap 110. The multiple second ignition openings 152 are arranged around the end of the flame transfer groove 117 close to the second burner cap 160, so that they can be quickly ignited by the combustion flame in the flame transfer groove 117.

[0098] In a specific embodiment, the burner 100 includes a first burner cap 110, a gas distribution plate 120, a buffer portion 140, and ignition holes 150. Among them, the gas distribution plate 120 is arranged on one side of the first burner cap 110, and the gas distribution plate 120 and the first burner cap 110 form a first gas chamber 131. The buffer portion 140 is located in the first gas chamber 131, and the buffer portion 140 has a buffer chamber 141. The ignition holes 150 are arranged on the first burner cap 110, and the ignition holes 150 communicate with the first gas chamber 131 through the buffer chamber 141.

[0099] Further, the buffer portion 140 is provided on the first burner cap 110 and / or the gas distribution plate 120. The buffer portion 140 further includes an air inlet 142 and an air outlet 143 that communicate with the buffer chamber 141. The air inlet 142 communicates with the first gas chamber 131, and the air outlet 143 communicates with the pilot holes 150.

[0100] Further, a part of the buffer portion 140 and the first burner cap 110 form the buffer chamber 141; or, a part of the buffer portion 140 and the gas distribution plate 120 form the buffer chamber 141; or, a part of the buffer portion 140, a part of the first burner cap 110, and a part of the gas distribution plate 120 form the buffer chamber 141.

[0101] Further, the buffer portion 140 and the first burner cap 110 or the gas distribution plate 120 are of an integral structure.

[0102] Further, the pilot holes 150 include a first pilot hole 151 and a second pilot hole 152 that face away from each other. The first pilot hole 151 is closer to the buffer chamber 141 than the second pilot hole 152, and the second pilot hole 152 is farther from the gas distribution plate 120 than the first pilot hole 151.

[0103] Further, the first burner cap 110 includes a first cover body 111 and a first side cover body 112. The first side cover body 112 is provided on the side wall of the first cover body 111 close to the center of the first cover body 111. The first side cover body 112 extends toward the gas distribution plate 120, and at least a part of the pilot holes 150 is provided on the first side cover body 112.

[0104] Further, the first burner cap 110 further includes a second side cover body 113 and a plurality of flame transfer holes 114. The second side cover body 113 is provided on the first cover body 111 opposite to the first side cover body 112. The second side cover body 113, the first cover body 111, and the first side cover body 112 form a part of the first gas chamber 131. The plurality of flame transfer holes 114 are spaced apart and provided on the second side cover body 113 and / or the first cover body 111, and the plurality of flame transfer holes 114 communicate with the first gas chamber 131.

[0105] Further, the first burner cap 110 further includes a flame stabilizing groove 115. The flame stabilizing groove 115 is provided on the second side cover body 113 and / or the first cover body 111, and the flame stabilizing groove 115 communicates with the first gas chamber 131.

[0106] Further, the first burner cap 110 further includes a gas transmission channel 116. The gas transmission channel 116 is provided on the first cover body 111 and / or the second side cover body 113. The flame stabilizing groove 115 communicates with the first gas chamber 131 through the gas transmission channel 116, wherein the extending direction of the gas transmission channel 116 is different from the extending direction of the flame stabilizing groove 115.

[0107] Furthermore, the burner 100 further includes a second burner cap 160, a flame transfer groove 117, and a pressure reduction chamber 118. The second burner cap 160 is disposed on the gas distribution plate 120 and is located inside the first burner cap 110. The flame transfer groove 117 is disposed on the first burner cap 110 and extends in a direction away from the second burner cap 160. The pressure reduction chamber 118 is disposed on the first burner cap 110, and the flame transfer groove 117 communicates with the first gas chamber 131 through the pressure reduction chamber 118.

[0108] Furthermore, under the combined action of the buffer chamber 141 at the ignition holes 150 and the pressure reduction chamber 118 at the flame transfer groove 117, it is possible to effectively buffer the combustible gas with a large air flow rate and a high gas flow velocity from the first gas chamber 131, so that the flow rate and flow velocity of the combustible gas passing through the ignition holes 150 and the flame transfer groove 117 will not be too large, avoiding flashback or flameout caused by the combustible gas with a high flow rate and a large flow, thereby ensuring the flame transfer success rate. At the same time, it will not affect the combustion efficiency of the gas stove having the burner 100, enabling the flue gas generated by the gas stove to be discharged normally and ensuring the normal use performance of the gas stove.

[0109] Furthermore, the pressure reduction chamber 118 is located on the side of the flame transfer groove 117 facing the gas distribution plate 120.

[0110] Furthermore, the pressure reduction chamber 118 includes a low-pressure chamber 118a and at least one communication channel 118b. The low-pressure chamber 118a communicates with the flame transfer groove 117, and the low-pressure chamber 118a communicates with the first gas chamber 131 through at least one communication channel 118b.

[0111] Furthermore, at least a part of the wall of the low-pressure chamber 118a is an arc-shaped wall.

[0112] Furthermore, the number of the ignition holes 150 is multiple, and the second ignition openings 152 of the multiple ignition holes 150 are arranged around the flame transfer groove 117.

[0113] According to the second aspect of the present invention, there is provided a gas stove including the burner 100 provided by any of the above designs.

[0114] The gas stove provided by the present invention includes the burner 100 provided by any of the above designs, and thus has all the beneficial effects of the burner 100, which will not be elaborated herein.

[0115] Specifically, the burner 100 includes a first burner cap 110, a gas distribution plate 120, a buffer portion 140, and a pilot hole 150. Among them, the gas distribution plate 120 is provided on one side of the first burner cap 110, and the gas distribution plate 120 and the first burner cap 110 form a first gas chamber 131. The buffer portion 140 is located in the first gas chamber 131, and the buffer portion 140 has a buffer chamber 141. The pilot hole 150 is provided on the first burner cap 110, and the pilot hole 150 communicates with the first gas chamber 131 through the buffer chamber 141.

[0116] The burner 100 provided by the present invention includes a first burner cap 110, a gas distribution plate 120, a buffer portion 140, and a pilot hole 150. The gas distribution plate 120 is provided on one side of the first burner cap 110. It is worth noting that along the vertical direction, at least a part of the gas distribution plate 120 is located below the first burner cap 110. The gas distribution plate 120 is connected to the first burner cap 110 and forms a first gas chamber 131. Specifically, when the first burner cap 110 is annular, the first gas chamber 131 is an annular chamber. Specifically, the gas distribution plate 120 has at least one gas distribution channel, and the combustible gas can be transported into the first gas chamber 131 along one of the at least one gas distribution channels to enable the first burner cap 110 to form a flame. Specifically, the combustible gas can be liquefied petroleum gas, coal gas, natural gas and other gases. Further, the burner 100 further includes a buffer portion 140. The buffer portion 140 is located in the first gas chamber 131, and the buffer portion 140 has a buffer chamber 141. It is worth noting that the pressure borne by the buffer chamber 141 is less than the pressure borne in the first gas chamber 131. It should be noted that the buffer portion 140 can form the buffer chamber 141 by itself, or the buffer portion 140 can jointly form the buffer chamber 141 with the first burner cap 110 and / or the gas distribution plate 120, which can be selected according to the actual situation. Further, the pilot hole 150 is provided on the first burner cap 110, and the pilot hole 150 communicates with the first gas chamber 131 through the buffer chamber 141. In this application, by providing the buffer portion 140 between the pilot hole 150 and the first gas chamber 131, the buffer portion 140 buffers the combustible gas with a large air flow rate and a high gas flow velocity from the first gas chamber 131, so that the flow rate and flow velocity of the combustible gas passing through the pilot hole 150 will not be too large, avoiding flame lift-off or flame extinction caused by the combustible gas with a high flow rate and a large flow volume, and then ensuring the fire transfer success rate at the pilot hole 150. At the same time, it will not affect the combustion efficiency of the gas stove having the burner 100, enabling the flue gas generated by the gas stove to be discharged normally and ensuring the normal use performance of the gas stove.

[0117] Further, the burner 100 further includes a second burner cap 160, a flame transfer groove 117, and a pressure reduction chamber 118. The second burner cap 160 is disposed on the gas distribution plate 120 and is located inside the first burner cap 110. The flame transfer groove 117 is disposed on the first burner cap 110 and extends in a direction away from the second burner cap 160. The pressure reduction chamber 118 is disposed on the first burner cap 110, and the flame transfer groove 117 communicates with the first gas chamber 131 through the pressure reduction chamber 118.

[0118] In this embodiment, the burner 100 further includes a second burner cap 160. The second burner cap 160 is disposed inside the generally annular first burner cap 110. That is to say, the second burner cap 160 is an inner burner cap, and the first burner cap 110 is an outer burner cap. The second burner cap 160 is disposed on the gas distribution plate 120. The second burner cap 160 can form a second gas chamber 132 with a part of the gas distribution plate 120. The combustible gas in the second gas chamber 132 can be transported to the second burner cap 160 and thus be ignited at the second burner cap 160. During the operation of the burner 100, a flame is first formed at the second burner cap 160, and the flame needs to be transferred from the second burner cap 160 to the first burner cap 110, that is, transferred from the inside to the outside. The flame transfer groove 117 extends radially through the first cover body 111 of the first burner cap 110. If the combustion flame formed by the second burner cap 160 is directly discharged from the flame transfer groove 117, the combustion flame is likely to be extinguished and separated from the flame. By making the flame transfer groove 117 communicate with the first gas chamber 131 through the pressure reduction chamber 118, the flow rate of the combustible gas in the flame transfer groove 117 can be reduced, the flame stabilization performance of the combustion flame at the flame transfer groove 117 can be improved, the phenomenon of flame transfer interruption caused by the too fast flow rate of the combustible gas at the flame transfer groove 117 can be solved, and the flame at the flame transfer groove 117 can be well stabilized, thereby enhancing the applicability of the air damper opening of the gas stove. That is to say, under the condition of a larger air damper opening, the success rate of flame transfer can also be ensured. It is worth noting that the high-flow and high-velocity combustible gas in the first gas chamber 131 can be decelerated and depressurized in the pressure reduction chamber 118, so that the combustible gas will not affect the combustion flame when it is transferred to the flame transfer groove 117. Specifically, the pressure borne by the pressure reduction chamber 118 is less than the pressure borne by the first gas chamber 131.

[0119] Further, under the combined action of the buffer chamber 141 at the ignition hole 150 and the pressure reduction chamber 118 at the flame transfer groove 117, the combustible gas with a large air flow rate and a high gas flow velocity from the first gas chamber 131 can be effectively buffered, so that the flow rate and flow velocity of the combustible gas passing through the ignition hole 150 and the flame transfer groove 117 will not be too large, avoiding the flame separation or flameout caused by the high-flow and high-velocity combustible gas, and further ensuring the success rate of flame transfer. At the same time, it will not affect the combustion efficiency of the gas stove having the burner 100, enabling the flue gas generated by the gas stove to be normally discharged and ensuring the normal use performance of the gas stove.

[0120] In the present invention, the term "a plurality of" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "coupled" can be a direct coupling or an indirect coupling through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0121] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0122] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A burner, characterized in that, Comprising: A first burner cap; A gas distribution plate, disposed on one side of the first burner cap and forming a first gas chamber with the first burner cap; A buffer portion, located within the first gas chamber, the buffer portion having a buffer chamber; Pilot holes, disposed on the first burner cap, the pilot holes being in communication with the first gas chamber through the buffer chamber; The buffer chamber is configured to buffer the combustible gas coming from the first gas chamber; The pilot holes include a first pilot opening and a second pilot opening facing away from each other, the first pilot opening being closer to the buffer chamber than the second pilot opening, and the second pilot opening being farther from the gas distribution plate than the first pilot opening; The pilot holes are elongated, in the vertical direction, the second pilot opening is located above the first pilot opening, and the channel formed by the pilot holes extends obliquely upward with respect to the horizontal plane; A second burner cap, disposed on the gas distribution plate and located inside the first burner cap; A fire transfer groove, disposed on the first burner cap and extending in a direction away from the second burner cap; A pressure reduction chamber, disposed on the first burner cap, the fire transfer groove being in communication with the first gas chamber through the pressure reduction chamber; The pressure borne by the pressure reduction chamber is less than the pressure borne by the first gas chamber; The first burner cap includes: A first cover body; A first side cover body, disposed on the side wall of the first cover body close to the center of the first cover body, the first side cover body extending towards the gas distribution plate, and at least a part of the pilot holes being disposed on the first side cover body; A second side cover body, disposed on the first cover body opposite to the first side cover body, the second side cover body, the first cover body and the first side cover body forming a part of the first gas chamber; A plurality of fire transfer holes, spacedly disposed on the second side cover body and the first cover body, the plurality of fire transfer holes being in communication with the first gas chamber.

2. The burner according to claim 1, characterized in that, The buffer portion is disposed on the first burner cap and / or the gas distribution plate; The buffer portion further includes an air inlet and an air outlet in communication with the buffer chamber, the air inlet being in communication with the first gas chamber, and the air outlet being in communication with the pilot holes.

3. The burner according to claim 1, characterized in that, The buffer portion and a part of the first burner cap form the buffer chamber; or The buffer portion and a part of the gas distribution plate form the buffer chamber; or The buffer portion, a part of the first burner cap and a part of the gas distribution plate form the buffer chamber.

4. The burner according to claim 3, characterized in that, The buffer portion and the first burner cap or the gas distribution plate are of an integral structure.

5. The burner according to claim 1, characterized in that, The first burner cap further includes: A flame stabilizing groove, disposed on the second side cover body and / or the first cover body, the flame stabilizing groove being in communication with the first gas chamber.

6. The burner according to claim 5, characterized in that, The first burner cap further includes: A gas transmission channel, disposed on the first cover body and / or the second side cover body, the flame stabilizing groove being in communication with the first gas chamber through the gas transmission channel, wherein the extending direction of the gas transmission channel is different from the extending direction of the flame stabilizing groove.

7. The burner according to any one of claims 1 to 6, characterized in that, The pressure reduction chamber is located on the side of the fire transfer groove facing the gas distribution plate.

8. The burner according to any one of claims 1 to 6, characterized in that, The pressure reduction chamber includes: A low-pressure chamber, the low-pressure chamber being in communication with the fire transfer groove; At least one communication channel, the low-pressure chamber being in communication with the first gas chamber through the at least one communication channel.

9. The burner according to claim 8, characterized in that, At least a part of the chamber wall of the low-pressure chamber is an arc-shaped wall.

10. The burner according to any one of claims 1 to 6, characterized in that, The number of the ignition holes is multiple, and second ignition ports of the multiple ignition holes are arranged around the fire transfer groove.

11. A gas stove, characterized in that, Comprising: A burner according to any one of claims 1 to 10.

Images