Combustor and gas stove having the same

Abstract

This invention belongs to the field of kitchen appliances, specifically disclosing a burner and a gas stove having the same. The burner has a burner head, a burner cap, and a thermocouple. The burner head has a first gas distribution chamber and a second gas distribution chamber. The first gas distribution chamber is annular and surrounds the second gas distribution chamber. At least a portion of the outer wall of the first gas distribution chamber is recessed towards the center of the first gas distribution chamber to form a mounting position. The burner cap is placed on the burner head and has a plurality of first gas outlet holes communicating with the first gas distribution chamber. The thermocouple is located in the mounting position. According to the burner of this embodiment, by recessing at least a portion of the outer wall of the first gas distribution chamber radially inward along the burner head to form a mounting position for the thermocouple, the thermocouple is brought closer to the core temperature zone of the burner, thereby enhancing the heat intensity at the thermocouple. At the same time, setting the mounting position to be concave reduces heat loss, making the burner less prone to flameout even in low flame conditions.

Description

Technical Field

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

[0002] Currently, gas stoves have become the main cooking appliances. Gas stoves include a burner, which heats the gas by forming a flame through outward-sprayed gas. In related technologies, the burner includes a burner head and a burner cap mounted on the burner bowl. The burner head injects a mixture of gas and air into the gas distribution chamber and then through the burner cap's flame holes, where it is finally ignited to form a flame.

[0003] By controlling the amount of gas supplied in the gas distribution chamber, gas stoves can usually adjust the flame size. However, insufficient low flame size is a major pain point in the use of gas stoves, especially when simmering soup. Insufficient low flame size often causes the soup to evaporate quickly, requiring users to add water midway, which results in a diluted soup flavor. In more serious cases, it can even cause dry burning because the soup has completely evaporated.

[0004] To address this, some technologies configure the gas distribution chamber for generating a small flame as annular and located outside the gas distribution chamber for generating a large flame, so that the heating load per unit area is smaller in the small flame state. However, the above configuration can easily reduce the temperature acquisition of the thermocouple located outside the gas distribution chamber for generating a small flame, thereby causing the thermocouple to misjudge and making it easy for the flame to go out in the small flame state. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a burner that can enhance the heat intensity at the thermocouple and reduce heat loss at that point, making it less prone to flameout in low-fire conditions.

[0006] The present invention also proposes a gas stove having the above-mentioned burner.

[0007] According to a first aspect of the present invention, a burner includes a burner head, a flame cap, and a thermocouple; the burner head has a first gas distribution chamber and a second gas distribution chamber, the first gas distribution chamber being annular and arranged around the second gas distribution chamber, at least a portion of the outer sidewall of the first gas distribution chamber being recessed toward the center of the first gas distribution chamber to form a mounting position; the flame cap is disposed on the burner head and has a plurality of first gas outlet holes communicating with the first gas distribution chamber; the thermocouple is located in the mounting position.

[0008] The burner according to an embodiment of the present invention has at least the following beneficial effects: by recessing at least a portion of the outer side wall of the first gas distribution chamber toward the center of the first gas distribution chamber to form a mounting position for setting a thermocouple, the thermocouple can be brought closer to the core temperature zone of the burner, thereby enhancing the heat intensity at the thermocouple; at the same time, setting the mounting position to be concave can reduce heat loss, making it less likely for the burner to extinguish even in low flame state.

[0009] According to some embodiments of the present invention, the first vent holes are arranged at circumferential intervals along the flame cap, and the distribution density of the first vent holes at the mounting position is greater than the distribution density at other positions.

[0010] According to some embodiments of the present invention, a portion of the first gas distribution chamber at the mounting position is in an arc shape that is concave inward along the radial direction of the burner head, and the first gas outlet is arranged in a corresponding arc shape at the mounting position.

[0011] According to some embodiments of the present invention, the edge of the flame cap has a flange extending radially along the flame cap, the flange being used for radial sealing of the first gas distribution chamber, and the flange forming an avoidance notch at the mounting position.

[0012] According to some embodiments of the present invention, the width of the first air distribution cavity at the mounting position is smaller than the width at other positions.

[0013] According to some embodiments of the present invention, the flame cap is provided with a windproof structure at the thermocouple.

[0014] According to some embodiments of the present invention, a mounting hole is formed on the burner head, and the mounting hole constitutes the mounting position.

[0015] According to some embodiments of the present invention, the flame cover includes an upper cover and a lower cover, the upper cover having a plurality of second vent holes communicating with the second gas distribution chamber, the lower cover having a first vent hole, and an vent gap communicating with the first gas distribution chamber being formed between the upper cover and the lower cover.

[0016] According to some embodiments of the present invention, the lower cover body is formed with a lug, and the lug has a clearance hole for the thermocouple to pass through.

[0017] According to some embodiments of the present invention, the upper cover is provided with a limiting groove, the width of which is smaller than the diameter of the clearance hole, for preventing the thermocouple from moving upward along the axial direction of the upper cover.

[0018] According to some embodiments of the present invention, the flame cap is an integral structural component.

[0019] According to some embodiments of the present invention, the second air distribution chamber is annular and is arranged concentrically with the first air distribution chamber.

[0020] A gas stove according to a second aspect of the present invention includes a burner according to a first aspect of the present invention.

[0021] The gas stove according to the embodiments of the present invention has at least the following beneficial effects: by using the burner of the first aspect embodiment of the present invention, the heat intensity at the thermocouple can be enhanced, while the heat loss at the thermocouple can be reduced, making it less likely for the gas stove to go out even in low flame mode, thereby improving the user experience while ensuring safety.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 These are exploded views of burners according to some embodiments of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the burner head according to some embodiments of the present invention;

[0026] Figure 3 This is a side view of the burner head according to some embodiments of the present invention;

[0027] Figure 4 for Figure 3 Sectional view of section AA;

[0028] Figure 5 This is a top view of the flame cover according to some embodiments of the present invention;

[0029] Figure 6 for Figure 5 Sectional view of section BB;

[0030] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0031] Figure 8 for Figure 6 Enlarged view at point D;

[0032] Figure 9 This is a schematic diagram of the internal structure of the flame cap according to some embodiments of the present invention;

[0033] Figure 10 This is a schematic diagram of the external structure of the flame cap according to some embodiments of the present invention;

[0034] Figure 11 This is a top view of a burner according to some embodiments of the present invention;

[0035] Figure 12 for Figure 11 A sectional view of section EE;

[0036] Figure 13 This is a schematic diagram of the structure of a burner (with an anti-dry-burning probe and an air intake assembly) according to some embodiments of the present invention;

[0037] Figure 14 This is a top view of a burner (with an anti-dry-burning probe and an air intake assembly) according to some embodiments of the present invention;

[0038] Figure 15 This is a partial structural schematic diagram of the air intake assembly of a burner according to some embodiments of the present invention.

[0039] Figure label:

[0040] Burner head 100, first gas distribution chamber 110, second gas distribution chamber 120, mounting position 130, boss 140;

[0041] Flame cap 200, first vent 210, second vent 220, lug 230, clearance hole 240, limiting groove 250, vent gap 260;

[0042] Thermocouple 300;

[0043] 400mm anti-dry-burning probe;

[0044] Air intake assembly 500, first ejector tube 510, second ejector tube 520, air regulating plate 530. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0046] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, inside, outside, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0047] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0048] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0049] A burner is a general term for a device that sprays fuel and air in a certain way to mix and burn, and it is widely used in people's lives. In related technologies, a burner includes a burner head and a flame cap mounted on the furnace hopper. The burner head injects the mixture of fuel gas and air into the gas distribution chamber and then through the flame holes on the flame cap, where it is finally ignited to form a flame.

[0050] In related technologies, gas stoves can usually adjust the size of the flame by controlling the amount of gas supplied in the gas distribution chamber. However, the flame is not small enough, which is a major pain point in the use of gas stoves, especially when making soup. When the flame is not small enough, the soup will evaporate quickly, which requires the user to add water halfway through, resulting in a bland soup flavor. In more serious cases, the soup may even dry out completely.

[0051] Some studies have proposed placing both the gas distribution chambers for generating the small flame and the gas distribution chambers for generating the large flame on the outer diameter of the burner, with the small flame distribution chamber located on the outside and the large flame distribution chamber on the inside. This structure increases the heating area of ​​the small flame without changing the small flame load, resulting in more uniform heating and a lower load per unit area. Furthermore, placing the small flame distribution chamber on the outside further reduces the distance between the small flame and the bottom of the pot, further lowering the load per unit area in the small flame state. In summary, this structure makes the flame more stable in the large flame state and reduces the heating load per unit area in the small flame state.

[0052] However, while the burners in the related technologies can provide reliable flame stabilization and smaller flames to improve the cooking experience, this type of burner tends to reduce the temperature acquisition of the thermocouple located outside the gas distribution chamber that generates the small flame. This can cause the thermocouple to misjudge the flame, making it easy for the flame to go out in the small flame state.

[0053] Therefore, some embodiments of the first aspect of the present invention provide a burner, specifically referring to the accompanying drawings. Figures 1 to 15 As shown.

[0054] Reference Figure 1 , Figure 2 and Figure 5 As shown, Figure 1The dashed lines in the figure represent the assembly relationship between burner components. In some embodiments, the burner includes a burner head 100, a burner cap 200, and a thermocouple 300.

[0055] Specifically, the burner head 100 has a first gas distribution chamber 110 and a second gas distribution chamber 120. The first gas distribution chamber 110 is annular and arranged around the second gas distribution chamber 120. Part of the outer side wall of the first gas distribution chamber 110 is recessed inward along the radial direction of the burner head 100 (that is, recessed towards the center of the first gas distribution chamber 110) to form a mounting position 130. The burner cap 200 is placed on the burner head 100 and forms a plurality of first gas outlet holes 210 communicating with the first gas distribution chamber 110. Thermocouple 300 is located in the mounting position 130.

[0056] It should be noted that the annulus of the first air distribution chamber 110 can be a circular annulus, an elliptical annulus, or a semi-square annulus, etc.

[0057] It is understandable that the shape of the second air distribution chamber 120 can be annular or other shapes. In addition, the second air distribution chamber 120 can be adjacent to the first air distribution chamber 110 or not adjacent to the first air distribution chamber 110, as long as the first air distribution chamber 110 surrounds the second air distribution chamber 120.

[0058] In addition, it should be noted that in this embodiment, the first gas distribution chamber 110 is located on the outside and the second gas distribution chamber 120 is located on the inside. The first gas distribution chamber 110 provides gas for the small flame, and the second gas distribution chamber 120 provides gas for the large flame. The above arrangement increases the heating area of ​​the small flame without changing the load of the small flame, thereby achieving the effect of a smaller small flame.

[0059] It should be noted that thermocouples are commonly used temperature-sensing elements in temperature measuring instruments. They directly measure temperature and convert the temperature signal into a thermoelectric potential signal, which is then converted into the temperature of the measured medium by an electrical instrument (secondary instrument). The appearance of various thermocouples (300 series) can vary greatly depending on the requirements, but their basic structure is roughly the same. They typically consist of thermocouples, insulating sleeves, protective tubes, and junction boxes, and are usually used in conjunction with display instruments, recording instruments, and electronic controllers.

[0060] Thermocouples are used in gas stoves to provide flameout protection.

[0061] During normal use of a gas stove, the continuous thermoelectric potential of the thermocouple ensures that the solenoid valve in the gas pipeline remains open and allows gas to flow. However, if the gas stove malfunctions and the flame goes out abnormally, the thermoelectric potential of the thermocouple disappears, and the solenoid valve closes protectively, thus preventing the risk of gas leakage.

[0062] It is understandable that, since the mounting position 130 is formed by the inward indentation of part of the outer side wall of the first gas distribution chamber 110, the mounting position 130 is closer to the center of the burner head 100 as a whole, and correspondingly, the thermocouple 300 installed on the mounting position 130 is also closer to the center of the burner head 100.

[0063] Furthermore, the fact that thermocouple 300 is closer to the center of burner head 100 means that thermocouple 300 is closer to the core heat source of the burner, avoiding misjudgment due to the temperature of thermocouple 300 dropping during small-flame combustion, which could lead to abnormal burner shutdown.

[0064] It should be noted that the concave shape in this invention can be a circular arc, an elliptical arc, or other concave shapes, and is not limited here.

[0065] Reference Figure 2 and Figure 3 As shown, in some embodiments, a portion of the first gas distribution chamber 110 at the mounting position 130 is arc-shaped.

[0066] Specifically, the arc shape is recessed inward along the radial direction of the burner head 100, while the first air outlet 210 is arranged in an arc shape at the mounting position 130.

[0067] Understandably, the first gas distribution chamber 110 at the installation position 130 is set in an arc shape to avoid excessive resistance to the gas at this location. At the same time, the stress concentration in the arc transition is smaller, which is beneficial to improving the strength of the burner head 100.

[0068] Correspondingly, the first air outlet 210 is arranged in an arc shape at the installation position 130 so that the first air outlet 210 at the installation position 130 can smoothly spray the gas from the first gas distribution chamber 110 at the installation position 130.

[0069] It is understood that the present invention does not limit the detailed arrangement of the arc-shaped arrangement.

[0070] It is also understood that the arc shape of the first air distribution chamber 110 at the mounting position 130 and the arc shape of the first air outlet 210 at the mounting position 130 can be set according to the actual situation, and the present invention does not impose specific limitations.

[0071] It should be noted that in some embodiments, the center of the arc of part of the first gas distribution cavity 110 at the mounting position 130 is on the line connecting the center of the burner and the center of the mounting position 130. This not only makes the arc of part of the first gas distribution cavity 110 at the mounting position 130 more aesthetically pleasing, but also makes the thickness distribution of the outer wall at the mounting position 130 more reasonable, so that the strength of the outer wall at the mounting position 130 will not vary too much.

[0072] In addition, it also makes the use of the burner safer. Multiple first gas outlet holes 210 are formed on the burner cap 200, which are connected to the first gas distribution chamber 110. The gas in the first gas distribution chamber 110 can be ejected through the first gas outlet holes 210, so that the gas can be ignited outside the burner cap 200. After the gas is ignited, the thermocouple 300 at the installation position 130 has a greater heat intensity. At the same time, the heat loss at the thermocouple 300 is also reduced, making it less likely for the burner to go out in the low flame state.

[0073] It should be noted that, depending on actual needs, the shape of the burner head 100 and the burner cap 200 can be any shape, and no specific limitation is made here.

[0074] It should be noted that the shape and number of the first vent 210 can be flexibly selected according to actual needs, and no specific limitation is made here.

[0075] Further reference Figure 3 and Figure 4 As shown, in some embodiments, the first air distribution cavity 110 has a boss 140 at the bottom of the mounting position 130 to reduce the cross-sectional area of ​​the first air distribution cavity 110.

[0076] Understandably, by reducing the cross-sectional area of ​​the first gas distribution chamber 110, the velocity of the gas passing through this chamber can be increased, resulting in faster gas flow from the first gas outlet 210 at the installation position 130. This leads to more intense combustion of the gas at the installation position 130 and enhanced heat at the installation position 130. Consequently, the thermocouple 300 installed at the installation position 130 will not misjudge due to excessively low heat potential, thus preventing erroneous cutoff of the gas supply and making it less likely for the burner to extinguish in low flame mode.

[0077] Reference Figure 5 As shown, multiple first vent holes 210 are arranged at intervals along the circumference of the flame cap 200, and the distribution density of the first vent holes 210 at the mounting position 130 is increased.

[0078] It is understandable that by increasing the density of the first gas outlet 210 at the installation position 130, the first gas distribution chamber 110 can spray more gas at the installation position 130, making the combustion at the installation position 130 more intense, enhancing the heat intensity of the thermocouple 300 installed at the installation position 130, so that the temperature at the thermocouple 300 will not easily drop, and the burner in the low flame state will not easily go out.

[0079] It should be noted that the increased distribution density of the first vent 210 at the mounting position 130 means that the distribution density of the first vent 210 at the mounting position 130 is greater than the distribution density of the first vent 210 at other positions on the flame cap 200 other than the mounting position 130.

[0080] It is worth noting that in some embodiments, the two solutions of setting a boss 140 at the bottom of the mounting position 130 of the first gas distribution chamber 110 and increasing the distribution density of the first gas outlet 210 at the mounting position 130 can be used simultaneously. This setting can not only increase the flow rate of the gas in the first gas outlet 210 at the mounting position 130, but also increase the flow rate of the gas in the first gas outlet 210 at the mounting position 130.

[0081] Correspondingly, the increased flow rate and volume of the gas in the first outlet 210 at the installation position 130 will make the combustion at the installation position 130 more intense, and the thermocouple 300 installed at the installation position 130 will also have stronger heat intensity, so that the temperature at the thermocouple 300 will not easily drop due to external factors such as wind, and the burner will not easily go out.

[0082] In some embodiments, refer to Figure 9 As shown, the edge of the flame cap 200 has a flange extending radially along the edge of the flame cap 200. The flange is used for radial sealing of the first gas distribution chamber 110. The flange forms an clearance notch at the mounting position 130.

[0083] It is understandable that radial sealing can provide a sealing effect while preventing the burner cap 200 from shifting on the burner head 100. The clearance notch is formed to allow the thermocouple 300 to be installed smoothly on the burner cap 200. Because the flange forms a clearance notch at the mounting position 130, the burner cap 200 and the first gas distribution chamber 110 cannot achieve radial sealing at the mounting position 130, but can only achieve planar sealing. Except at the mounting position 130, the burner cap 200 and the first gas distribution chamber 110 use radial sealing.

[0084] It should be noted that the height of the flange extending radially along the edge of the flame cap 200 only needs to be sufficient to achieve a radial seal, and no other restrictions are imposed here.

[0085] It should also be noted that the size of the clearance notch formed by the flange at the mounting position 130 is related to the size of the thermocouple 300. The clearance notch formed by the flange at the mounting position 130 only needs to allow the flame cap 200 to be installed smoothly with the thermocouple 300, and no other restrictions are imposed here.

[0086] In some embodiments, refer to Figure 2 , Figure 3 , Figure 4 As shown, the width of the first gas distribution chamber 110 at the mounting position 130 along the radial direction of the furnace head 100 decreases.

[0087] Understandably, the above configuration allows the cross-sectional area of ​​the first gas distribution chamber 110 at the installation position 130 to be reduced, thereby increasing the speed of the gas passing through this location. This results in the gas flowing out of the first gas outlet 210 at the installation position 130 faster, leading to more intense combustion of the gas at the installation position 130. The heat intensity at the installation position 130 is enhanced, preventing the thermocouple 300 installed at the installation position 130 from easily cutting off the gas supply and making it less likely for the burner to extinguish in low flame mode.

[0088] Meanwhile, the burner cap 200 does not have a radial seal at the mounting position 130, but instead uses a planar seal. By reducing the radial width of the first gas distribution chamber 110 at the mounting position 130 along the burner head 100, it means that the end wall of the first gas distribution chamber 110 at the mounting position 130 is thickened, thereby increasing the contact area between the end wall and the burner cap 200 and improving the sealing performance between the burner cap 200 and the burner head 100 at the mounting position 130.

[0089] It should be noted that the radial width of the first gas distribution chamber 110 at the installation position 130 along the burner head 100 is only required to allow the first gas distribution chamber 110 at the installation position 130 to spray gas, and no other restrictions are imposed here.

[0090] Reference Figure 10 As shown, the flame cap 200 has a windproof structure at the thermocouple 300.

[0091] Understandably, the windproof structure can surround the head of the thermocouple 300, preventing the head of the thermocouple 300 from cooling down due to external wind and other factors. At the same time, it also reduces the heat dissipation of the thermocouple 300 itself, making the thermal intensity at the thermocouple 300 more stable and preventing the burner from easily going out.

[0092] It should be noted that the windproof structure set at the thermocouple 300 of the flame cap 200 can be an integral windproof structure with the flame cap 200, or it can be a separate windproof structure, such as a windproof structure formed by connecting the flame cap 200 with a metal sheet or metal wire.

[0093] In some embodiments, refer to Figure 2 , Figure 3 and Figure 4 As shown, mounting holes are formed on the burner head 100, and the mounting holes constitute mounting positions 130.

[0094] Understandably, the machining of the hole is relatively simpler, and the hole diameter can be machined according to the size of the thermocouple 300, thereby reducing production costs.

[0095] It should be noted that mounting slots or other methods can also be used to form mounting position 130, as long as it can limit the thermocouple 300.

[0096] In some embodiments, refer to Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the flame cover 200 includes an upper cover and a lower cover, and the upper cover has a plurality of second air outlets 220 that communicate with the second air distribution chamber 120.

[0097] At the same time, multiple first air vents 210 are formed on the lower cover, and an air vent gap 260 communicating with the first air distribution chamber 110 is formed between the upper cover and the lower cover, and a flame is formed at the air vent gap 260.

[0098] It is understandable that when the burner is in high flame mode or a combination of high and low flame mode, the gas in the second gas distribution chamber 120 is ejected from the upper cover through the second gas outlet 220 and then ignited, generating a high flame above the upper cover.

[0099] When the burner is in low flame mode or a combination of high flame and low flame mode, the gas in the first gas distribution chamber 110 is ejected from the lower cover through the first gas outlet 210 and the gas outlet gap 260, and then ignited, generating a low flame at the gas outlet gap 260.

[0100] It should be noted that in some embodiments, the small flame generated by the burner is outside and surrounds the large flame generated by the burner. This makes the flame stability better in the large flame state and the heating load per unit area is smaller in the small flame state. This allows users to obtain a smaller flame during cooking, which is suitable for simmering soups and other dishes, thus improving the user's cooking experience.

[0101] In some embodiments, refer to Figure 5 , Figure 6 , Figure 7 , Figure 9 and Figure 10 As shown, a lug 230 is formed on the lower cover. The lug 230 has a clearance hole 240 for the thermocouple 300 to pass through. The lug 230 and the clearance hole 240 can better install and fix the thermocouple 300 on the flame cover 200. At the same time, the lug 230 can also play a role in wind protection.

[0102] It should be noted that in some embodiments, the diameter of the clearance hole 240 through which the thermocouple 300 passes in the lug 230 is slightly larger than the diameter of the thermocouple 300. This serves the purpose of installation while also preventing the flame cap 200 from rotating freely, thus providing a positioning function.

[0103] It should be noted that the diameter of the clearance hole 240 through which the thermocouple 300 passes in the lug 230 only needs to be larger than the diameter of the thermocouple 300 to achieve the installation function.

[0104] In some embodiments, refer to Figure 5 , Figure 6 , Figure 7 and Figure 10 As shown, a limiting groove 250 is provided on the upper cover. The width of the limiting groove 250 is smaller than the diameter of the clearance hole 240, which is used to prevent the thermocouple 300 from moving upward along the axial direction of the upper cover.

[0105] Understandably, if there were no limit groove 250, the thermocouple 300 would move up and down during the use of the burner, causing the heat intensity at the thermocouple 300 to change continuously, affecting the function of the thermocouple 300 in opening and closing the gas pipeline, and causing inconvenience to the user.

[0106] It should be noted that the position of the limiting groove 250 should correspond to the position of the clearance hole 240, so as to prevent the thermocouple 300 from moving upward along the axial direction of the upper cover.

[0107] In some embodiments, refer to Figure 9 and Figure 10 As shown, by making the upper cover and lower cover into a single structural component, the flame cover 200 can be made more convenient for users to use, improve the strength of the flame cover 200, and provide users with a better experience.

[0108] It should be noted that the flame cap 200 can also be a split structural component.

[0109] In some embodiments, refer to Figure 2 and Figure 3 As shown, the second air distribution chamber 120 is annular and concentric with the first air distribution chamber 110.

[0110] Understandably, this setting improves the combustion efficiency of the burner.

[0111] In some embodiments, refer to Figure 13 , Figure 14 and Figure 15 As shown, the burner also includes an anti-dry-burning probe 400 and an air intake assembly 500. The anti-dry-burning probe 400 is used to prevent the cooking appliance from overheating due to dry burning. The anti-dry-burning probe 400 is installed in the center of the burner, which can better achieve the anti-dry-burning function when the burner is in use.

[0112] It is also understood that the air intake assembly 500 includes a first ejector tube 510, a second ejector tube 520, and an air regulating plate 530. The first ejector tube 510 is connected to the second air distribution chamber 120, and the second ejector tube 520 is connected to the first air distribution chamber 110. The first ejector tube 510 and the second ejector tube 520 draw in air through ejection, thereby mixing it with the fuel gas. The air regulating plate 530 is disposed on the first ejector tube 510 and the second ejector tube 520 and can change the effective cross-sectional area of ​​the air intake.

[0113] Some embodiments of the second aspect of the present invention also provide a gas stove, not shown in the figures, which includes the burner of the first aspect embodiment.

[0114] According to an embodiment of the present invention, the gas stove has a mounting position 130 in the burner that is formed by at least a portion of the outer side wall of the first gas distribution chamber 110 being recessed radially inward along the burner head 100. Therefore, the mounting position 130 is generally closer to the center of the burner head 100.

[0115] Correspondingly, the thermocouple 300 installed in the mounting position 130 is closer to the center of the burner head 100. The heat intensity at the thermocouple 300 is stronger, so the temperature at the thermocouple 300 will not easily drop due to external factors such as wind, and the burner will not easily go out. Consequently, the gas stove is also less likely to go out.

[0116] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A burner, characterized in that, include: The burner head has a first gas distribution chamber and a second gas distribution chamber. The first gas distribution chamber is annular and arranged around the second gas distribution chamber. At least a portion of the outer side wall of the first gas distribution chamber is recessed toward the center of the first gas distribution chamber to form a mounting position. A fire cover is placed on the burner head and has multiple first gas outlet holes that communicate with the first gas distribution chamber. In the axial direction, the mounting position is disposed adjacent to the flame cap, extends toward the flame cap, and passes through the top of the outer side wall; Thermocouple, located in the mounting position; The edge of the flame cap has a flange extending radially along the flame cap, the flange being used for radial sealing of the first gas distribution chamber, and the flange forming an clearance notch at the mounting position; The width of the first air distribution cavity at the mounting position is smaller than the width at other positions, and a boss is provided at the bottom of the first air distribution cavity at the mounting position to reduce the cross-sectional area of ​​the first air distribution cavity; The first air outlet is spaced circumferentially along the burner cap, and the distribution density of the first air outlet at the installation position is greater than that at other positions; the portion of the first gas distribution chamber at the installation position is an arc shape that is concave inward along the radial direction of the burner head, and the first air outlet is arranged in an arc shape accordingly at the installation position.

2. The burner according to claim 1, characterized in that, The flame cap is equipped with a windproof structure at the thermocouple.

3. The burner according to claim 1, characterized in that, The burner head has mounting holes, which constitute the mounting position.

4. The burner according to claim 3, characterized in that, The flame cover includes an upper cover and a lower cover. The upper cover has a plurality of second air outlets communicating with the second air distribution chamber. The lower cover has a first air outlet. An air outlet gap communicating with the first air distribution chamber is formed between the upper cover and the lower cover.

5. The burner according to claim 4, characterized in that, The lower cover has a lug, and the lug has a clearance hole for the thermocouple to pass through.

6. The burner according to claim 5, characterized in that, The upper cover has a limiting groove, the width of which is smaller than the diameter of the clearance hole, to prevent the thermocouple from moving upward along the axial direction of the upper cover.

7. The burner according to claim 4, characterized in that, The flame cap is a one-piece structural component.

8. The burner according to claim 1, characterized in that, The second air distribution chamber is annular and is arranged concentrically with the first air distribution chamber.

9. A gas stove, characterized in that, Includes the burner according to any one of claims 1 to 8.

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