Combustor and gas hob

Abstract

The present application relates to the technical field of kitchen utensils, and discloses a burner and a gas stove. The gas stove comprises the burner, the burner comprises a temperature detection assembly, a gas mixing assembly and a center fire cover, the gas mixing assembly is formed with a gas mixing channel, the center fire cover is provided with a plurality of fire holes in communication with the gas mixing channel, a first fire retaining groove is formed in the lower surface of the center fire cover, the first fire retaining groove extends to the circumferential surface of the center fire cover, the center fire cover is arranged on the upper side of the gas mixing assembly, so that the first fire retaining groove forms a fire retaining hole, one end of the fire retaining hole is in communication with the gas mixing channel, and the other end is arranged opposite to the temperature detection assembly. The burner and the gas stove have the advantages that the fire retaining hole is convenient to process, and the overall manufacturing cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a burner and a gas stove. BACKGROUND

[0002] A gas stove is a kind of kitchen appliance with very wide application. The gas stove comprises a burner, the burner comprises a gas mixing assembly and a center fire cover arranged on the gas mixing assembly, gas and air are fully mixed in the gas mixing assembly and then discharged from a fire hole of the center fire cover, and then the gas is combusted to generate a flame at the fire hole.

[0003] In the related art, the burner usually has a flameout protection function. Specifically, the burner comprises a temperature detection assembly, the center fire cover is provided with a fire protection hole and a fire protection cavity, the outlet of the fire protection hole is arranged opposite to the temperature detection assembly, the inner cavity of the gas mixing assembly is communicated with the fire protection cavity and the fire protection hole, the gas can be discharged from the inner cavity of the gas mixing assembly, the fire protection cavity and the fire protection hole in sequence and then combusted, and the temperature detection assembly is used to detect the temperature at the fire protection hole. During the working process of the burner, when the temperature detection assembly detects that the temperature at the fire protection hole is lower than a preset value, it indicates that the flame at the fire protection hole is extinguished, at this time, the temperature detection assembly can send a signal to the control unit of the burner and stop the supply of gas, so as to avoid the situation that the gas is continuously supplied but not combusted, and prevent gas leakage. In the prior art, the fire protection hole is usually arranged on the circumferential surface of the center fire cover, and the fire protection cavity needs to extend to the bottom surface of the center fire cover to be communicated with the inner cavity of the gas mixing assembly, which has a complex processing process and high cost.

[0004] Therefore, there is an urgent need for a burner and a gas stove to solve the above technical problems. SUMMARY

[0005] The present application aims to provide a burner, which has a convenient fire protection hole forming process and low overall manufacturing cost.

[0006] Another object of the present application is to provide a gas stove, which has low manufacturing difficulty and low manufacturing cost by arranging the above burner.

[0007] To achieve the above objects, the present application adopts the following technical solutions:

[0008] A burner comprises:

[0009] a temperature detection assembly;

[0010] a gas mixing assembly, which has a gas mixing channel formed therein;

[0011] A center fire cover is provided with a plurality of fire holes in communication with the gas mixing passage, a first fire retaining groove is formed on the lower surface of the center fire cover and extends to the circumferential surface of the center fire cover, the center fire cover is arranged on the upper side of the gas mixing assembly so that the first fire retaining groove forms a fire retaining hole, one end of the fire retaining hole is in communication with the gas mixing passage and the other end is arranged opposite to the temperature detecting assembly.

[0012] As an optional solution, the first fire retaining groove is integrally cast with the center fire cover.

[0013] As an optional solution, a second fire retaining groove is formed on the upper surface of the gas mixing assembly, the center fire cover is arranged on the gas mixing assembly so that the second fire retaining groove forms a fire retaining cavity, the fire retaining cavity is in communication with the fire retaining hole and the gas mixing passage respectively.

[0014] As an optional solution, the gas mixing assembly comprises a burner head and a fire divider arranged on the burner head, the burner head and the fire divider jointly form the gas mixing passage, the first fire retaining groove is arranged on the fire divider and integrally cast with the fire divider.

[0015] As an optional solution, a communication groove is arranged on the sidewall of the second fire retaining groove, the communication groove is in communication with the gas mixing passage and the second fire retaining groove, the lower surface of the center fire cover is provided with a flow dividing portion, at least part of the flow dividing portion is located in the gas mixing passage and at least part of the flow dividing portion is located in the communication groove.

[0016] As an optional solution, a flow guiding slope is arranged on the side of the flow dividing portion facing the first fire retaining groove, the flow guiding slope is configured to guide the airflow in the fire retaining cavity to flow into the first fire retaining groove.

[0017] As an optional solution, the flow dividing portion is integrally cast with the center fire cover; and / or

[0018] The gas mixing assembly comprises a burner head and a fire divider arranged on the burner head, the burner head and the fire divider jointly form the gas mixing passage, the first fire retaining groove and the communication groove are both arranged on the fire divider and integrally cast with the fire divider.

[0019] As an optional solution, the burner further comprises an ignition assembly arranged opposite to the circumferential surface, part of the plurality of fire holes are arranged on the circumferential surface, and the fire retaining hole is arranged below any of the fire holes located on the circumferential surface.

[0020] As an optional scheme, the circumferential surface is provided with a fire channel, a fire hole above the fire hole is defined as a first fire hole, and the fire channel is communicated with the first fire hole and the first fire hole.

[0021] As an optional scheme, the gas mixing channel comprises a center outer ring gas mixing channel and a center inner ring gas mixing channel which are independently arranged, the center inner ring gas mixing channel is prior to the center outer ring gas mixing channel to obtain the gas, and the fire hole is communicated with the center inner ring gas mixing channel.

[0022] A gas stove comprises a gas path unit, a valve body unit and the burner.

[0023] The burner has the following advantages:

[0024] The burner has the following advantages:

[0025] The gas stove has the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 FIG. 1 is a structural schematic diagram of the burner provided by the embodiment of the present application;

[0027] Figure 2 FIG. 2 is a sectional structural schematic diagram of the burner provided by the embodiment of the present application;

[0028] Figure 3 FIG. 3 is a structural schematic diagram of the fire divider provided by the embodiment of the present application;

[0029] Figure 4 FIG. 4 is a structural schematic diagram of the first center fire cover provided by the embodiment of the present application;

[0030] Figure 5 FIG. 5 is a structural schematic diagram of the second center fire cover provided by the embodiment of the present application;

[0031] Figure 6 FIG. 6 is a structural schematic diagram of the burner provided by the embodiment of the present application and mounted with the second center fire cover;

[0032] Figure 7Fig. 3 is a structural schematic view of a third central fire cover provided in the embodiment of the present application.

[0033] Fig. 1 is a structural schematic view of a first central fire cover provided in the embodiment of the present application.

[0034] 1. air mixing assembly; 11. air distributor; 111. central part; 1111. second fireproof groove; 1112. communication groove; 1113. upper surface; 112. outer ring part; 1121. outermost ring fire outlet; 12. burner; 13. air mixing passage; 131. central outer ring air mixing passage; 132. central inner ring air mixing passage; 133. outermost ring air mixing passage;

[0035] 2. central fire cover; 21. fire hole; 211. outer ring fire outlet; 2111. first fire hole; 212. inner ring fire outlet; 22. first fireproof groove; 23. fire guide groove; 24. flow dividing part; 241. flow guiding slope; 25. circumferential surface; 26. inclined surface; 27. lower surface;

[0036] 3. fireproof cavity;

[0037] 4. fireproof hole;

[0038] 5. temperature detecting assembly;

[0039] 6. fire striking assembly. DETAILED DESCRIPTION

[0040] The present application will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and not limiting of the present application. In addition, it should be noted that for the purpose of clarity, only those structures of the application that are relevant to the present application have been shown in the drawings.

[0041] In the description of the present application, unless otherwise explicitly defined and limited, the terms "connected", "connection", "fixed", should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0044] This embodiment provides a burner and a gas stove. The gas stove includes a burner, a valve body unit, and a gas connection unit. The inlet of the valve body unit is connected to an external gas supply source, and the gas connection unit connects the outlet of the valve body unit and the inner cavity of the burner. The valve body unit is operated by the user and controls whether gas enters the burner for combustion, as well as the amount of gas entering the burner. Figure 1 and Figure 2 As shown, a mixing channel 13 is provided inside the burner. Multiple flame holes 21 are formed at the outlet end of the mixing channel 13. After the gas enters the burner, it can be mixed with the injected air. The mixed gas is discharged from each flame hole 21 and then burned.

[0045] like Figure 1 and Figure 2 As shown, the burner includes a mixing assembly 1 and a central burner cap 2, wherein a mixing channel 13 is formed within the mixing assembly 1. The central burner cap 2 is positioned above the mixing assembly 1 and has multiple burner holes 21, all of which communicate with the mixing channel 13. In this embodiment, the mixing assembly 1 includes a burner head 12 and a flame distributor 11, wherein the burner head 12 is used to connect with the gas path communication unit. The flame distributor 11 is positioned on the burner head 12, and the flame distributor 11 and the burner head 12 together form the mixing channel 13. By setting the mixing assembly 1 as a separate structure, it is easier to process and manufacture. In this embodiment, the mixing channel 13 includes a central outer ring mixing channel 131 and a central inner ring mixing channel 132, with the central outer ring mixing channel 131 surrounding the outer periphery of the central inner ring mixing channel 132. Figure 2 and Figure 3As shown, the distributor 11 includes a center portion 111 and an outer ring portion 112, the outer ring portion 112 is arranged around the outer periphery of the center portion 111, and a spacing space is formed between the outer ring portion 112 and the center portion 111. The center cap 2 is arranged on the center portion 111 of the distributor 11. The burner head 12 and the center portion 111 of the distributor 11 jointly form a center outer ring gas mixing passage 131 and a center inner ring gas mixing passage 132. In this embodiment, the gas mixing passage 13 further includes an outermost ring gas mixing passage 133, which is arranged in the outer ring portion 112 of the distributor 11 and communicates with the center outer ring gas mixing passage 131. As shown in Figure 1 and Figure 3 As shown, the outer ring portion 112 is provided with an outermost ring fire hole 1121, which communicates with the outermost ring gas mixing passage 133.

[0046] As shown in Figure 1 and Figure 4 The center cap 2 is configured as a rotary body structure and has a lower surface 27 and a circumferential surface 25, and the circumferential surface 25 intersects with the lower surface 27. Optionally, the center cap 2 further includes an inclined surface 26, which is also a rotary surface and is arranged above the circumferential surface 25. The maximum diameter of the inclined surface 26 is smaller than that of the circumferential surface 25. In this embodiment, a part of the plurality of fire holes 21 are arranged on the circumferential surface 25, and a part of the plurality of fire holes 21 are arranged on the inclined surface 26. The fire holes 21 located on the circumferential surface 25 are defined as outer ring fire holes 211, and the fire holes 21 located on the inclined surface 26 are defined as inner ring fire holes 212. As shown in Figure 2 The outer ring fire holes 211 communicate with the center outer ring gas mixing passage 131, and the inner ring fire holes 212 communicate with the center inner ring gas mixing passage 132.

[0047] When the burner is working, a part of the mixed gas of fuel gas and air enters the inner ring fire holes 212 through the center inner ring gas mixing passage 132, is discharged from the inner ring fire holes 212, and then burns to form an inner ring flame; a part of the mixed gas of fuel gas and air enters the outer ring fire holes 211 through the center outer ring gas mixing passage 131, is discharged from the outer ring fire holes 211, and then burns to form an outer ring flame; a part of the mixed gas of fuel gas and air enters the outermost ring gas mixing passage 133 through the outer ring gas mixing passage 13, then enters the outermost ring fire hole 1121 from the outermost ring gas mixing passage 133, and finally is discharged from the outermost ring fire hole 1121 and then burns to form an outermost ring flame. The burner of this embodiment can realize multi-ring fire, thereby being able to meet different firepower requirements and providing good user experience.

[0048] Preferably, as shown in Figure 2 and Figure 4As shown, the burner further comprises a temperature detection assembly 5, and the lower surface 27 of the center fire cap 2 is provided with a first fire retaining groove 22 extending to the circumferential surface 25 of the center fire cap 2, the center fire cap 2 is arranged on the upper side of the gas mixing assembly 1, so that the first fire retaining groove 22 forms a fire retaining hole 4, one end of the fire retaining hole 4 is in communication with the gas mixing channel 13, and the other end is in communication with the outside of the center fire cap 2, and the outlet of the fire retaining hole 4 is arranged opposite to the temperature detection assembly 5. When the temperature detection assembly 5 detects that the temperature at the fire retaining hole 4 is lower than the preset temperature, it is determined that the burner is extinguished, at which time the temperature detection assembly 5 communicates with the valve body unit to stop the valve body unit from supplying gas to the burner, thereby enabling the burner to have the function of flameout protection. In addition, in the embodiment, the first fire retaining groove 22 is arranged on the lower surface 27 of the center fire cap 2, and after the center fire cap 2 is arranged on the gas mixing assembly 1, the first fire retaining groove 22 directly forms the fire retaining hole 4 in communication with the gas mixing channel 13, greatly reducing the forming difficulty of the fire retaining hole 4, thereby reducing the manufacturing cost of the burner.

[0049] Preferably, the center fire cap 2 is cast into shape, and the first fire retaining groove 22 is integrally formed in the center fire cap 2 during casting, so that the fire retaining hole 4 does not need to be additionally machined, thereby reducing the machining process steps of the center fire cap 2 and reducing the manufacturing cost of the burner. Alternatively, as shown in the first fire cap 2 of the second embodiment, the first fire retaining groove 22 is machined on the lower surface 27 of the center fire cap 2, and the first fire retaining groove 22 is arranged on the circumferential surface 25 of the center fire cap 2 after the center fire cap 2 is arranged on the gas mixing assembly 1. Figure 4 As shown, the first fire retaining groove 22 is configured as a cuboid structure, which is regular in shape and easy to form. Alternatively, the depth of the first fire retaining groove 22 is 0.3-4mm, preferably 1mm. The size of the first fire retaining groove 22 along the circumference of the center fire cap 2 is 1-5mm, preferably 3mm. The length of the first fire retaining groove 22 along the radial direction of the center fire cap 2 is 3-10mm, preferably 6.5mm. Through the above arrangement, the fire retaining hole 4 has a larger volume, thereby reducing the resistance of the mixed gas flowing out, and thereby being able to form a stable burning flame near the temperature detection assembly 5, improving the reliability of the flameout protection function. It can be understood that the first fire retaining groove 22 can also be configured as a cavity with a trapezoidal cross section or other polygonal cross section, which can be selected and arranged according to actual needs.

[0050] In the embodiment, the temperature detection assembly 5 can be a thermocouple, which is arranged in the spacing space between the center part 111 and the outer ring part 112 of the fire divider 11, the detection end of the temperature detection assembly 5 is located on one side of the circumferential surface 25 of the center fire cap 2 and is opposite to the outlet of the fire retaining hole 4, thereby being able to accurately detect the temperature at the fire retaining hole 4.

[0051] When adjusting the flame size of the burner (i.e. adjusting the amount of gas supplied to the burner), the mixed gas enters the central inner annular gas mixing passage 132 first, and then enters the central outer annular gas mixing passage 131. That is, when the burner is in a small fire state, there is only gas in the central inner annular gas mixing passage 132, and when the burner is in a large fire state, there is gas in both the central inner annular gas mixing passage 132 and the central outer annular gas mixing passage 131. In this embodiment, the fire-keeping hole 4 is in communication with the central inner annular gas mixing passage 132, so when the burner is in a small fire state, mixed gas also enters the fire-keeping hole 4 and burns after being discharged from the fire-keeping hole 4, so that the temperature detection assembly 5 can play the function of flame-out protection.

[0052] Preferably, as shown in Figure 2 and Figure 3 , the upper surface 1113 of the gas mixing assembly 1 is provided with a second fire-keeping groove 1111, and the central fire cover 2 is arranged on the gas mixing assembly 1, so that the second fire-keeping groove 1111 forms a fire-keeping cavity 3, which is in communication with the fire-keeping hole 4 and the gas mixing passage 13, respectively. On the one hand, by arranging the second fire-keeping cavity 3, the communication between the fire-keeping hole 4 and the gas mixing passage 13 is facilitated; on the other hand, the fire-keeping cavity 3 not only can store a certain amount of mixed gas, but also can buffer and stabilize the flow of mixed gas, thereby ensuring that the gas supply at the fire-keeping hole 4 is sufficient and the gas flow is stable, avoiding problems such as flame separation and flame-out at the fire-keeping hole 4, and further improving the reliability of the flame-out protection function; in addition, in this embodiment, the second fire-keeping groove 1111 is arranged on the upper surface 1113 of the gas mixing assembly 1, so that the fire-keeping cavity 3 can be directly formed when the central fire cover 2 and the gas mixing assembly 1 are assembled, greatly reducing the forming difficulty of the fire-keeping cavity 3, and further reducing the manufacturing cost of the burner.

[0053] As shown in Figure 2 and Figure 3 , the second fire-keeping groove 1111 is arranged on the upper surface 1113 of the fire divider 11 and is open on the upper side, so that the fire-keeping cavity 3 is formed after the central fire cover 2 is arranged on the gas mixing assembly. The sidewall of the second fire-keeping groove 1111 is provided with a communication groove 1112, which communicates the second fire-keeping groove 1111 with the gas mixing passage 13. In this embodiment, the communication groove 1112 communicates the second fire-keeping groove 1111 with the central inner annular gas mixing passage 132.

[0054] Preferably, the fire divider 11 is formed by casting, and the second fire-keeping groove 1111 and the communication groove 1112 are integrally formed during the casting process of the fire divider 11, without the need for additional mechanical processing, thereby further reducing the processing steps of the burner and reducing the manufacturing cost of the burner.

[0055] Optionally, as shown in Figure 3As shown, the second fire-keeping groove 1111 in the embodiment is configured as a cuboid structure, which is regular in shape and convenient for molding. Optionally, the depth of the second fire-keeping groove 1111 is 0.5-10 mm, and preferably 5.5 mm. The dimension of the second fire-keeping groove 1111 along the circumference of the center fire cap 2 is 0.5-6 mm, and preferably 4 mm. The dimension of the second fire-keeping hole 4 along the radial direction of the center fire cap 2 is 4-15 mm, and preferably 8 mm. It can be understood that in other embodiments, the second fire-keeping groove 1111 can also be configured as a cavity with a trapezoidal cross section or other polygonal cross section, which can be selected and arranged according to actual needs.

[0056] In some embodiments, as shown in Figure 5 and Figure 6 The lower surface 27 of the center fire cap 2 is convexly provided with a flow distribution portion 24, at least part of the flow distribution portion 24 is located in the gas mixing channel 13, and at least part of the flow distribution portion 24 is located in the communication groove 1112. By providing the flow distribution portion 24, the mixed gas in the gas mixing channel 13 can be distributed, ensuring that part of the mixed gas enters the fire hole 21 of the center fire cap 2 for combustion, and part of the mixed gas enters the fire-keeping cavity 3 and is finally discharged from the fire-keeping hole 4 for combustion, avoiding the competition for gas between the fire hole 21 and the fire-keeping hole 4, ensuring the stability of combustion at the fire-keeping hole 4, and further ensuring the reliability of the flameout protection. In the embodiment, along the radial direction of the center fire cap 2, the flow distribution portion 24 extends from the start of the inner ring gas mixing channel 132 to the fire-keeping cavity 3 through the communication groove 1112.

[0057] Optionally, the flow distribution portion 24 is configured as a cuboid or an approximately cuboid shape. The height of the flow distribution portion 24 protruding from the lower surface 27 of the center fire cap 2 is less than the depth of the second fire-keeping groove 1111, and is 1-6 mm, and preferably 2.5 mm. The dimension of the flow distribution portion 24 in the radial direction of the center fire cap 2 is 3-10 mm, and preferably 5.5 mm. The dimension of the flow distribution portion 24 in the circumferential direction of the center fire cap 2 is less than the dimension of the second fire-keeping groove 1111 in the circumferential direction of the center fire cap 2, and is 1-4 mm, and preferably 2 mm.

[0058] Preferably, as shown in Figure 5 and Figure 6 The side of the flow distribution portion 24 facing the first fire-keeping groove 22 is provided with a flow guide slope 241, which is used to guide the airflow in the fire-keeping cavity 3 to flow into the first fire-keeping groove 22. Through the flow guide of the flow guide slope 241, the mixed gas in the fire-keeping cavity 3 can flow more smoothly into the fire-keeping hole 4, further improving the stability of flame combustion at the fire-keeping hole 4, and improving the reliability of the flameout protection.

[0059] Preferably, in this embodiment, the diversion section 24 is integrally formed during the casting process of the center flame cap 2, thereby avoiding additional machining, reducing the process steps in burner manufacturing, and lowering the manufacturing cost of the burner. In other embodiments, the diversion section 24 can also be configured to be separately formed from the center flame cap 2, and the diversion section 24 can be welded to the bottom of the center flame cap 2 by welding. No specific limitation is made here.

[0060] like Figure 1 As shown, the burner also includes an ignition assembly 6. When gas is supplied to the mixing channel 13 of the burner, the ignition assembly 6 can generate a spark to ignite the gas at the flame holes 21. The ignition assembly 6 is a readily available and mature component, and can be any existing type without departing from the inventive concept of this application. In this embodiment, the ignition assembly 6 is disposed in the space between the center portion 111 and the outer ring portion 112 of the flame distributor 11, and the ignition assembly 6 is opposite to the circumferential surface 25 of the central flame cap 2. Therefore, after the ignition assembly 6 ignites, the flame holes 21 on the circumferential surface 25 of the central flame cap 2 are preferentially ignited, that is, the outer ring flame holes 211 near the ignition assembly 6 are preferentially ignited, and then all the outer ring flame holes 211 are ignited, while the inner ring flame holes 212 on the inclined surface 26 and the outermost ring flame holes 1121 on the outer ring portion 112 are ignited next.

[0061] Preferably, such as Figure 7 As shown, the flameproof hole 4 is located below any of the flame holes 21 on the circumferential surface 25. That is, the flameproof hole 4 is located below any of the outer ring flame outlet holes 211, so that the flameproof hole 4 can be ignited by the outer ring flame outlet hole 211 above it earlier, thereby activating the flameout protection function more quickly.

[0062] like Figure 7 As shown, the fire hole 21 located above the flame-holding hole 4 is defined as the first fire hole 2111. An ignition groove 23 is provided on the circumferential surface 25, connecting the first flame-holding groove 22 and the first fire hole 2111. By providing the ignition groove 23, after the first fire hole 2111 is ignited, the flame will burn downwards through the ignition groove 23 to the flame-holding hole 4 more quickly, allowing the flame-holding hole 4 to be ignited more rapidly, thereby improving the reliability of the burner's flameout protection. Preferably, the ignition groove 23 is integrally formed during the casting of the central flame cap 2, thereby reducing machining steps and simplifying the burner's manufacturing process. Optionally, the circumferential dimension of the ignition groove 23 in the central flame cap 2 is 0.5-2 mm, preferably 1 mm.

[0063] Obviously, the above embodiments of the present application are merely exemplary but not intended to limit the embodiments of the present application. For those skilled in the art, according to the idea of the present application, the specific embodiments and application scope can be changed, and the content of the specification should not be understood as limiting the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the claims of the present application.

Claims

1. A burner, characterized by The application relates to a temperature detection assembly (5) and a gas mixing assembly (1) which is internally formed with a gas mixing channel (13) comprising a center outer ring gas mixing channel (131) and a center inner ring gas mixing channel (132) which are independently arranged, wherein the center outer ring gas mixing channel (131) is arranged around the outer periphery of the center inner ring gas mixing channel (132). A center fire cover (2) is arranged on the upper side of the gas mixing assembly (1) and is provided with a plurality of fire holes (21) which are in communication with the gas mixing channel (13), wherein the lower surface (27) of the center fire cover (2) is provided with a first fire retaining groove (22) which extends to the circumferential surface (25) of the center fire cover (2), the first fire retaining groove (22) forms a fire retaining hole (4) after the center fire cover (2) is arranged on the upper side of the gas mixing assembly (1), one end of the fire retaining hole (4) is in communication with the gas mixing channel (13), and the other end of the fire retaining hole (4) is arranged opposite to the temperature detection assembly (5), and the first fire retaining groove (22) and the center fire cover (2) are integrally cast. The gas mixing assembly (1) comprises a furnace head (12) and a fire distributor (11) which is arranged on the furnace head (12), the furnace head (12) and the fire distributor (11) jointly form the gas mixing channel (13), a second fire retaining groove (1111) is arranged on the upper surface (1113) of the fire distributor (11) and is open upward, thereby forming a fire retaining cavity (3) after the center fire cover (2) is arranged on the upper side of the gas mixing assembly (1), the fire retaining cavity (3) is in communication with the fire retaining hole (4) and the gas mixing channel (13) respectively, and the second fire retaining groove (1111) and the fire distributor (11) are integrally cast. A communication groove (1112) is arranged on the side wall of the second fire retaining groove (1111), the communication groove (1112) is in communication with the center inner ring gas mixing channel (132) and the second fire retaining groove (1111), the lower surface (27) of the center fire cover (2) is provided with a flow distribution part (24), at least part of the flow distribution part (24) is located in the gas mixing channel (13), and at least part of the flow distribution part (24) is located in the communication groove (1112), along the radial direction of the center fire cover (2), the flow distribution part (24) extends from the center inner ring gas mixing channel (132) to the fire retaining cavity (3) through the communication groove (1112). A flow guide inclined surface (241) is arranged on the side of the flow distribution part (24) which faces the first fire retaining groove (22), the flow guide inclined surface (241) is configured to guide the airflow in the fire retaining cavity (3) to flow into the first fire retaining groove (22). The flow distribution part (24) and the center fire cover (2) are integrally cast; and / or 2. The burner of claim 1, wherein ​ 3. The burner of claim 1, wherein ​ The gas mixing assembly (1) comprises a burner head (12) and a fire divider (11) arranged on the burner head (12), the burner head (12) and the fire divider (11) jointly form the gas mixing passage (13), the second fire holding groove (1111) and the communication groove (1112) are arranged on the fire divider (11) and integrally cast with the fire divider (11).

4. Burner according to any one of claims 1-3, characterized in that The burner further comprises a striking assembly, the striking assembly is arranged opposite to the circumferential surface (25), among the plurality of fire holes (21), part of the fire holes (21) are arranged on the circumferential surface (25), and the fire holding hole (4) is arranged below any one of the fire holes (21) located on the circumferential surface (25).

5. The burner of claim 4, wherein The circumferential surface (25) is provided with a fire leading groove (23), the fire hole (21) located above the fire holding hole (4) is defined as a first fire hole (2111), and the fire leading groove (23) communicates the first fire holding groove (22) and the first fire hole (2111).

6. Burner according to any of claims 1-3, characterized in that The central inner ring gas mixing passage (132) obtains gas in priority to the central outer ring gas mixing passage (131), and the fire holding hole (4) communicates with the central inner ring gas mixing passage (132).

7. Gas hob, characterized in that The burner comprises a gas path unit, a valve body unit and the burner of any one of claims 1-6, and the gas path unit communicates the valve body unit and the gas mixing passage (13).

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