Upper air inlet burner

Abstract

The upper air inlet burner comprises a furnace end, the furnace end comprises an outer ring fire cover seat and at least one outer ring fire injection pipe, the outer ring fire cover seat is provided with a fire distribution cavity, and the outer ring fire injection pipe is used for supplying air to the fire distribution cavity; the outer ring fire ejection pipe is formed by matching a rectifying plate and an ejection groove with an opening in the top, the rectifying plate and the outer ring fire cover seat are of an integrally formed structure, an air inlet of the outer ring fire ejection pipe extends to the fire distribution cavity through the ejection groove, and air and gas enter a cavity between the rectifying plate and the ejection groove from the air inlet to be rectified and mixed to form mixed gas; and then the mixed gas is input into the fire distribution cavity, stable flowing of the mixed gas is achieved, and off-flame tempering is avoided. Mixed gas entering the fire distribution cavity can flow stably, flame separation and tempering are avoided, cleaning is convenient, the combustion efficiency of the combustor is improved, and the furnace end is easy to machine and manufacture.

Description

Technical Field

[0001] The invention relates to the technical field of burners, and in particular to an upward air inlet burner with a stir-frying function. Background Art

[0002] The burner is an indispensable kitchen appliance in family life. The burner is used to heat the pot to complete the cooking.

[0003] The burner head is an important component of the burner. The outer ring fire ejector tube in the prior art is generally fixedly connected to the bottom of the outer ring fire cover seat, and the air and gas are mixed through the Venturi structure and input into the fire chamber. However, the above structure is unstable when conveying the mixed gas, which can easily cause flame flashback. Summary of the invention

[0004] The purpose of the present invention is to provide a technical solution for an upper air inlet burner to address the deficiencies in the prior art, which can not only ensure a stable flow of the mixed gas entering the fire chamber and avoid flame backfire, but also facilitate cleaning, improve the combustion efficiency of the burner, and facilitate the processing and manufacturing of the burner head.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An upward air inlet burner, comprising

[0007] A furnace head, comprising an outer ring fire cover seat and at least one outer ring fire ejector pipe, the outer ring fire cover seat is provided with a fire distribution cavity, and the outer ring fire ejector pipe is used for supplying gas to the fire distribution cavity;

[0008] Features:

[0009] The outer ring fire ejector tube is composed of a rectifier plate and an ejector groove with an opening on the top. The rectifier plate and the outer ring fire cover seat are an integrally formed structure. The air inlet of the outer ring fire ejector tube extends to the fire dividing chamber through the ejector groove. Air and fuel gas enter the cavity between the rectifier plate and the ejector groove from the air inlet for rectification and mixing to form a mixed gas, which is then input into the fire dividing chamber to achieve stable flow of the mixed gas and avoid flame separation and flashback. Through the design of the above structure, not only can the mixed gas entering the fire dividing chamber flow stably and avoid flame separation and flashback, but it is also easy to clean, improves the combustion efficiency of the burner, and facilitates the processing and manufacturing of the burner head.

[0010] Furthermore, the rectifying plate and the ejector slot are both in an inclined arc structure or a stepped structure, which facilitates uniform mixing of air and gas between the rectifying plate and the ejector slot.

[0011] Furthermore, the rectifier plate includes an integrally formed mounting plate, a first rectifier panel and a second rectifier panel. The second rectifier panel is connected to the first rectifier panel through the mounting plate. The first rectifier panel is connected to the bottom surface of the fire distribution chamber. Through the design of the mounting plate, the connection stability and reliability between the first rectifier panel and the second rectifier panel can be improved. The edges of the mounting plate, the first rectifier panel and the second rectifier panel are fitted to the inner wall of the outer ring fire cover seat.

[0012] Furthermore, it also includes a central fire cover seat and a central fire ejection tube that are interconnected. The central fire cover seat is connected to the inner side of the outer ring fire cover seat through a connecting plate and a central fire ejection tube. A positioning sleeve is detachably connected inside the central fire cover seat. Gas can be supplied to the central fire cover seat through the central fire ejection tube. The connecting plate and the central fire ejection tube improve the connection stability and reliability between the central fire cover seat and the outer ring fire cover seat. The positioning sleeve is convenient for gas supply during stir-frying or installation of an anti-dry burning probe.

[0013] Furthermore, a positioning hole and a first positioning groove are provided on the connecting plate for positioning the thermocouple and the ignition needle.

[0014] Furthermore, it also includes an outer ring fire cover, which includes a first inclined surface and a second inclined surface. The second inclined surface is connected to the first inclined surface and is located on the outside of the first inclined surface. The inclination directions of the first inclined surface and the second inclined surface are opposite. The first inclined surface is provided with arc grooves evenly distributed in a ring shape, and the top of the arc groove is provided with an opening. The bottom of the arc groove is provided with a bottom surface with the same inclination direction as the first inclined surface. Through the design of the above structure, not only can the fire holes on the first inclined surface be reduced, effectively improving the amount of smoke in the cooking state, but also the overall weight of the fire cover can be reduced, while improving the overall aesthetics of the fire cover.

[0015] Furthermore, the first inclined surface and the second inclined surface are straight surfaces or curved surfaces, which are conducive to the downward flow of the soup and reduce the blockage of the fire outlet.

[0016] Furthermore, connecting surfaces are evenly distributed on the outer circumferential side of the second inclined surface, and a row of second fire holes are provided on the connecting surfaces. Grooves are evenly distributed between two adjacent connecting surfaces, and each groove is provided with two first fire holes distributed up and down. The grooves are separated by the connecting surfaces, so that the ignition of the first fire holes and the second fire holes can be made more stable, further improving the combustion efficiency of the burner.

[0017] Furthermore, the spacing between two adjacent first fire holes is greater than the spacing between two adjacent second fire holes, the aperture of the first fire hole located above is greater than the aperture of the first fire hole located below, and the aperture of the second fire hole is smaller than the aperture of the first fire hole, so as to avoid the grate legs. The first fire hole with a larger aperture at the top can make the heat of the outer ring fire cover more concentrated, and the first fire hole with a smaller aperture at the bottom can make the flame more stable.

[0018] Furthermore, a first retaining ring is provided at the bottom of the first inclined surface, and a second retaining ring is provided at the bottom of the second inclined surface. The first retaining ring and the second retaining ring are concentric circles with each other, which is conducive to the assembly of the fire cover on the burner and improves the connection stability between the fire cover and the burner. A second positioning groove is provided on the first retaining ring, and the bottom surfaces of the first retaining ring and the second retaining ring are flush, which facilitates the engagement and positioning of the fire cover.

[0019] Furthermore, it also includes a central fire cover, which includes an end cover and a support body. The support body and the end cover are an integrally processed and formed structure. The edge of the end cover protrudes from the top edge of the support body, and the support body is distributed with at least one circle of fire outlet holes and at least one circle of flame stabilizing holes along the circumferential direction. Through the design of the above structure, not only is it convenient to integrate the end cover and the support body for processing and manufacturing, but it can also meet the selection of ordinary fire covers, stir-fry fire covers and anti-dry burning fire covers, and is flexible and convenient to use.

[0020] Furthermore, the support body is a straight cylindrical structure, or a second inclined surface is provided on the side close to the end cover, or the upper and lower parts are provided with second inclined surfaces with opposite inclination directions. This can not only meet the ignition requirements of the fire outlet and the flame stabilizing hole, but also facilitate cooperation with the central fire cover seat to form a mixing chamber, thereby improving the combustion stability of the central fire cover.

[0021] Furthermore, the fire outlet hole and the flame stabilizing hole are both arranged on the second inclined surface or close to the end cover, which is conducive to the flame acting on the bottom of the cookware and improving the combustion efficiency. The fire outlet hole and the flame stabilizing hole are arranged parallel to each other vertically or arranged with equal intervals on the left and right. Not only can they meet the fire outlet requirements of ordinary fire covers, stir-fry fire covers and anti-dry-burning fire covers, but they also do not affect the combustion, stir-frying and anti-dry-burning functions of the central fire cover.

[0022] Furthermore, an annular groove or a positioning ring is provided at the bottom of the support body, or an annular groove is formed between the support body and the end cover to facilitate the matching connection between the center fire cover and the center fire cover seat.

[0023] Furthermore, the end cover is a closed disc-shaped structure or a ring-shaped structure with an opening in the center.

[0024] Furthermore, the end cover is provided with a liquid retaining ring and a sleeve, which are arranged on the upper and lower sides of the end cover, and the liquid retaining ring and the sleeve are concentric circles with each other. Through the design of the liquid retaining ring, the flow of soup into the sleeve can be reduced, which affects the stir-frying function. The length of the sleeve is greater than the length of the liquid retaining ring, and the inner diameter of the liquid retaining ring is greater than the outer diameter of the sleeve. This is not only conducive to the direct upward spraying of gas from the stir-frying fire hole in the sleeve, but also can ensure that there is a certain amount of air at the outlet end of the stir-frying fire hole, thereby improving the combustion efficiency.

[0025] Furthermore, a wind shield is provided on the end cover, and the length of the wind shield matches the length of the support body. The wind shield can not only protect the anti-dry burning probe, but also improve the detection accuracy. A liquid baffle is provided on the edge of the end cover, and an open groove is provided on the support body. The open groove is located directly below the liquid baffle, and the open groove is used to install a thermocouple and an ignition needle. The liquid baffle can guide the dripping soup to the outside, reduce the contact between the soup and the thermocouple and the ignition needle, and extend the service life of the thermocouple and the ignition needle.

[0026] Furthermore, it also includes a base, which includes a bottom plate, and the bottom plate is provided with a center fire air inlet, a center fire nozzle seat, an outer ring fire air inlet and at least one outer ring fire nozzle seat, the center fire nozzle seat and the outer ring fire nozzle seat are located on the top surface of the bottom plate, the center fire air inlet and the outer ring fire air inlet are located on the bottom surface of the bottom plate, the center fire air inlet is connected to the center fire nozzle seat, the outer ring fire air inlet is connected to the outer ring fire nozzle seat, and two adjacent outer ring fire nozzle seats are connected by a gas pipe, and the gas pipe is arranged on the bottom surface of the bottom plate; the above structure can ensure that the gas is stably input from the center fire air inlet and the outer ring fire air inlet, and output through the center fire nozzle seat and the outer ring fire nozzle seat, thereby improving the stability and reliability of gas transportation, and can ensure that the two outer ring fire nozzle seats supply gas to the outer ring fire cover seat at the same time, thereby improving the gas transportation efficiency and thereby improving the stability of the burner during combustion.

[0027] Furthermore, it also includes a stir-fry component, which includes a solenoid valve, a stir-fry fire air intake pipe and a stir-fry fire nozzle seat. The outer ring fire air intake or the central fire air intake is connected to a gas distribution joint, which is connected to the solenoid valve through a first connecting pipe, and the solenoid valve is connected to the stir-fry fire air intake pipe through a second connecting pipe. The solenoid valve controls the gas to enter the stir-fry fire nozzle seat through the stir-fry fire air intake pipe to achieve the stir-fry function. Through the design of the above structure, the solenoid valve can control the stir-fry function to ensure that the gas is directly sprayed upward during stir-frying. Compared with the traditional gas supply method, it can reach a heat load of 7kW, making the entire cooking process more time-saving and flexible and convenient to control.

[0028] Furthermore, a supporting sleeve is provided on the bottom plate for installing a thermocouple and an ignition needle, and a supporting protrusion is provided on the bottom plate, the center fire nozzle seat or the outer ring fire nozzle seat for supporting the burner head.

[0029] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0030] 1. The burner head of the present invention can not only make the mixed gas entering the fire distribution chamber flow stably to avoid flame flashback, but also is easy to clean, improves the combustion efficiency of the burner, and is easy to process and manufacture the burner head.

[0031] 2. The design of the mounting plate can improve the connection stability and reliability between the first rectifying panel and the second rectifying panel. The edges of the mounting plate, the first rectifying panel and the second rectifying panel are fitted to the inner wall of the outer ring fire cover seat.

[0032] 3. The outer ring fire cover of the present invention can not only reduce the fire outlet holes on the first inclined surface, effectively improving the amount of smoke during cooking, but also reduce the overall weight of the fire cover, while improving the overall aesthetics of the fire cover.

[0033] 4. The central fire cover of the present invention is not only convenient for integrated processing and manufacturing of the end cover and the support body, but also can meet the selection of ordinary fire covers, stir-fry fire covers and anti-dry burning fire covers, and is flexible and convenient to use.

[0034] 5. The base of the present invention can ensure the stable input of gas from the center fire air inlet and the outer ring fire air inlet, and output through the center fire nozzle seat and the outer ring fire nozzle seat, thereby improving the stability and reliability of gas transportation, and can ensure that the two outer ring fire nozzle seats supply gas to the outer ring fire cover seat at the same time, thereby improving the gas transportation efficiency and further improving the stability of the burner during combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with the accompanying drawings:

[0036] Figure 1 This is a structural schematic diagram of an upper air inlet burner of the present invention;

[0037] Figure 2 for Figure 1 Structural diagram of the middle A direction;

[0038] Figure 3 It is a structural schematic diagram of the burner head in the present invention;

[0039] Figure 4 for Figure 3 Schematic diagram of the structure in the B direction;

[0040] Figure 5 for Figure 3 The main view;

[0041] Figure 6 It is a schematic diagram of the structure of the outer ring fire cover in the present invention;

[0042] Figure 7 for Figure 6 Schematic diagram of the structure in the C direction;

[0043] Figure 8 for Figure 6 The main view;

[0044] Fig. 9 for Figure 8 Schematic diagram of the structure in the DD direction;

[0045] Fig.10 This is a schematic diagram of the structure of the central fire cover of Example 1 of the present invention;

[0046] Fig.11 for Fig.10 Structural schematic diagram of the E direction;

[0047] Fig.12 This is a schematic diagram of the structure of the center fire cover of Example 2 of the present invention;

[0048] Fig.13 for Fig.12 Schematic diagram of the structure in the F direction;

[0049] Fig.14 for Fig.12 The main view;

[0050] Fig.15 for Fig.14 Schematic diagram of the structure in the GG direction;

[0051] Fig.16 This is a schematic diagram of the structure of the center fire cover of Example 3 of the present invention;

[0052] Fig.17 for Fig.16 Schematic diagram of the structure in the H direction;

[0053] Fig.18 for Fig.16 The main view;

[0054] Fig.19 for Fig.18 Schematic diagram of the structure in the II direction;

[0055] Fig. 20 It is a schematic diagram of the connection between the base and the solenoid valve in the present invention;

[0056] Fig.21 It is a structural schematic diagram of the base in the present invention;

[0057] Fig. 22 for Fig.21 Schematic diagram of the structure in the J direction.

[0058] In the figure: 1-burner head; 101-outer ring fire cover seat; 102-center fire cover seat; 103-rectifier plate; 104-support member; 105-center fire ejector tube; 106-outer ring fire ejector tube; 107-positioning sleeve; 108-ejector groove; 109-fire distribution chamber; 111-connecting plate; 112-positioning hole; 114-first positioning groove; 115-first inclined plane; 116-mounting plate; 118-first rectifying panel; 119-second rectifying panel;

[0059] 2-outer ring fire cover; 201-first inclined surface; 202-second inclined surface; 203-arc groove; 204-ignition groove; 205-joining surface; 206-groove; 207-first fire outlet hole; 208-second fire outlet hole; 209-first retaining ring; 210-second positioning groove; 211-second retaining ring; 212-bottom surface;

[0060] 3-center fire cover; 301-end cover; 302-support body; 303-second inclined surface; 304-fire outlet hole; 305-flame stabilizing hole; 306-annular slot; 307-frying fire hole; 308-liquid retaining ring; 309-sleeve; 310-anti-dry burning hole; 311-windproof cover; 312-liquid retaining plate; 313-opening slot; 314-positioning ring;

[0061] 4-base; 401-bottom plate; 402-center fire nozzle seat; 403-outer ring fire nozzle seat; 404-frying fire nozzle seat; 405-center fire air inlet; 406-outer ring fire air inlet; 407-gas distribution joint; 408-frying fire air inlet pipe; 409-support sleeve; 410-support convex point; 411-gas pipe; 412-mounting block; 413-support foot; 414-solenoid valve; 415-first connecting pipe; 416-second connecting pipe. DETAILED DESCRIPTION

[0062] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0063] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0064] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0065] like Figure 1 to Figure 2 As shown, a top air inlet burner of the present invention comprises a burner head 1, an outer ring fire cover 2, a central fire cover 3 and a base 4. The outer ring fire cover 2 and the central fire cover 3 are assembled on the burner head 1, and the burner head 1 is installed on the base 4.

[0066] like Figures 3 to 5 As shown, the burner head 1 comprises an outer ring fire cover seat 101, at least one outer ring fire ejection pipe 106, a central fire cover seat 102 and a central fire ejection pipe 105. The present application preferably uses two outer ring fire ejection pipes 106, which are distributed at 180 degrees.

[0067] A support member 104 is provided at the bottom of the outer ring fire cover seat 101 and the outer ring fire ejector tube 106 .

[0068] The central fire cover seat 102 and the central fire ejection tube 105 are interconnected. The central fire cover seat 102 is connected to the inner side of the outer ring fire cover seat 101 through the connecting plate 111 and the central fire ejection tube 105. Gas can be supplied to the central fire cover seat 102 through the central fire ejection tube 105. The connecting plate 111 and the central fire ejection tube 105 improve the connection stability and reliability between the central fire cover seat 102 and the outer ring fire cover seat 101.

[0069] A positioning sleeve 107 is detachably connected to the center fire cover seat 102 to facilitate gas supply during stir-frying or installation of an anti-dry burning probe.

[0070] The connecting plate 111 is provided with a positioning hole 112 and a first positioning groove 114 for positioning the thermocouple and the ignition needle.

[0071] The outer ring fire cover seat 101 is provided with a fire distribution chamber 109 , and the outer ring fire ejector tube 106 is used for supplying gas to the fire distribution chamber 109 .

[0072] A first inclined surface 115 is provided at the bottom of the fire-dividing chamber 109 to facilitate the mixed gas to flow obliquely upward along the fire-dividing chamber 109, thereby improving the stability during combustion.

[0073] The outer ring fire ejector tube 106 is composed of a rectifier plate 103 and an ejector groove 108 with an opening on the top. The air inlet of the outer ring fire ejector tube 106 extends to the fire dividing chamber 109 through the ejector groove 108. Air and fuel gas enter the cavity between the rectifier plate 103 and the ejector groove 108 from the air inlet to be rectified and mixed to form a mixed gas, which is then input into the fire dividing chamber 109 to achieve a stable flow of the mixed gas and avoid flame flashback. Through the design of the above structure, not only can the mixed gas entering the fire dividing chamber 109 flow stably to avoid flame flashback, but it is also easy to clean, thereby improving the combustion efficiency of the burner and facilitating the processing and manufacturing of the burner head 1.

[0074] The rectifying plate 103 and the ejection groove 108 are both in an inclined arc structure or a stepped structure, which facilitates the uniform mixing of air and gas between the rectifying plate 103 and the ejection groove 108 .

[0075] The rectifying plate 103 and the outer ring fire cover seat 101 are an integrally formed structure. The rectifying plate 103 has one side close to the air inlet of the outer ring fire ejector tube 106 that is in contact with the bottom surface 212 of the fire separation chamber 109, and the other side forms an opening between the bottom surface 212 of the fire separation chamber 109 to facilitate the mixed gas to flow into the fire separation chamber 109.

[0076] The rectifier plate 103 includes an integrally formed mounting plate 116, a first rectifier panel 118, and a second rectifier panel 119. The second rectifier panel 119 is connected to the first rectifier panel 118 through the mounting plate 116. The first rectifier panel 118 is connected to the bottom surface of the fire chamber. The design of the mounting plate 116 can improve the connection stability and reliability between the first rectifier panel 118 and the second rectifier panel 119. The edges of the mounting plate 116, the first rectifier panel 118, and the second rectifier panel 119 are attached to the inner wall of the outer ring fire cover seat.

[0077] like Figures 6 to 9 As shown, the outer ring fire cover 2 includes a first inclined surface 201 and a second inclined surface 202. The second inclined surface 202 is connected to the first inclined surface 201 and is located outside the first inclined surface 201. The first inclined surface 201 and the second inclined surface 202 are an integrally processed structure.

[0078] The first inclined surface 201 and the second inclined surface 202 are straight or curved surfaces, which are conducive to the downward flow of the soup and reduce the blockage of the fire outlet 304. In the present application, the first inclined surface 201 is preferably a curved surface, and the second inclined surface 202 is a straight surface.

[0079] The first inclined surface 201 and the second inclined surface 202 have opposite inclination directions.

[0080] The first inclined surface 201 is provided with arc grooves 203 evenly distributed in a ring shape, the top of the arc groove 203 is provided with an opening, and the bottom of the arc groove 203 is provided with a bottom surface 212 with the same inclination direction as the first inclined surface 201; through the design of the above structure, not only the fire holes 304 on the first inclined surface 201 can be reduced, effectively improving the amount of smoke in the cooking state, but also the overall weight of the fire cover can be reduced, while improving the overall aesthetics of the fire cover.

[0081] Four connecting surfaces 205 are evenly distributed on the outer circumferential side surface of the second inclined surface 202, and a row of second fire holes 208 are provided on the connecting surfaces 205. Grooves 206 are evenly distributed between two adjacent connecting surfaces 205, and each groove 206 is provided with two first fire holes 207 distributed up and down. The grooves 206 are separated by the connecting surfaces 205, so that the ignition of the first fire holes 207 and the second fire holes 208 can be made more stable, thereby further improving the combustion efficiency of the burner.

[0082] The distance between two adjacent first ignition holes 207 is greater than the distance between two adjacent second ignition holes 208 . The aperture of the second ignition holes 208 is smaller than that of the first ignition holes 207 , so as to avoid the grate legs.

[0083] The aperture of the first fire hole 207 located at the top is larger than that of the first fire hole 207 located at the bottom. The first fire hole 207 with a larger aperture at the top can make the heat of the outer ring fire cover 2 more concentrated, and the first fire hole 207 with a smaller aperture at the bottom can make the flame more stable.

[0084] An ignition groove 204 is provided on the first inclined surface 201 , and the ignition groove 204 extends to the second inclined surface 202 .

[0085] A first retaining ring 209 is provided at the bottom of the first inclined surface 201, and a second retaining ring 211 is provided at the bottom of the second inclined surface 202. The first retaining ring 209 and the second retaining ring 211 are concentric circles with each other, which is conducive to the assembly of the fire cover on the burner head 1 and improves the connection stability between the fire cover and the burner head 1. A second positioning groove 210 is provided on the first retaining ring 209. The bottom surfaces 212 of the first retaining ring 209 and the second retaining ring 211 are flush, which is convenient for the engagement and positioning of the fire cover.

[0086] The base 4 may include a base 4 without a stir-fry component and a base 4 with a stir-fry component.

[0087] When the base 4 is a structure without a stir-fry component, the base 4 includes a bottom plate 401, and the bottom plate 401 is provided with a center fire air inlet 405, a center fire nozzle seat 402, an outer ring fire air inlet 406 and at least one outer ring fire nozzle seat 403, the center fire nozzle seat 402 and the outer ring fire nozzle seat 403 are located on the top surface of the bottom plate 401, the center fire air inlet 405 and the outer ring fire air inlet 406 are located on the bottom surface 212 of the bottom plate 401, the center fire air inlet 405 is connected to the center fire nozzle seat 402, and the outer ring fire air inlet 406 is connected to the outer ring fire nozzle seat 403; through the above structure, it can be ensured that the gas is stably input by the center fire air inlet 405 and the outer ring fire air inlet 406, and output through the center fire nozzle seat 402 and the outer ring fire nozzle seat 403, thereby improving the stability and reliability of gas transportation.

[0088] Two adjacent outer ring fire nozzle seats 403 are connected by a gas pipe 411, and the gas pipe 411 is arranged on the bottom surface 212 of the base plate 401, which can ensure that the two outer ring fire nozzle seats 403 supply gas to the outer ring fire cover seat 101 at the same time, thereby improving the gas transmission efficiency and further improving the stability of the burner during combustion.

[0089] A supporting sleeve 409 is provided on the bottom plate 401 for mounting a thermocouple and an ignition needle.

[0090] The bottom plate 401 , the central fire nozzle seat 402 or the outer ring fire nozzle seat 403 are provided with supporting protrusions 410 for supporting the burner head 1 .

[0091] The bottom surface 212 of the bottom plate 401 is provided with supporting feet 413 .

[0092] When the base 4 is a structure with a stir-fry component, such as Figure 20 to Figure 22 As shown, the base 4 includes a bottom plate 401, and the bottom plate 401 is provided with a central fire air inlet 405 and a central fire nozzle seat 402, an outer ring fire air inlet 406 and an outer ring fire nozzle seat 403, a stir-fry fire air inlet pipe 408 and a stir-fry fire nozzle seat 404 that are interconnected. The central fire air inlet 405, the outer ring fire air inlet 406 and the stir-fry fire air inlet pipe 408 are all located below the bottom plate 401, the central fire nozzle seat 402 and the outer ring fire nozzle seat 403 are located above the bottom plate 401, and the stir-fry fire nozzle seat 404 is located at the center of the bottom plate 401, and is used to spray gas vertically upward.

[0093] The two outer ring fire nozzle seats 403 are distributed at 180 degrees, and the two adjacent outer ring fire nozzle seats 403 are connected by a gas pipe 411. The gas pipe 411 is arranged on the bottom surface 212 of the base plate 401, which can ensure that the two outer ring fire nozzle seats 403 supply gas to the outer ring fire cover seat 101 at the same time, thereby improving the gas transmission efficiency and further improving the stability of the burner during combustion.

[0094] The stir-frying fire air intake pipe 408 is connected to the bottom plate 401 through the mounting block 412, so as to facilitate the installation and disassembly of the stir-frying fire air intake pipe 408.

[0095] It also includes a solenoid valve 414, and the outer ring fire air inlet 406 or the center fire air inlet 405 is connected to a gas distribution joint 407. The gas distribution joint 407 is connected to the solenoid valve 414 through a first connecting pipe 415, and the solenoid valve 414 is connected to the stir-fry fire air inlet pipe 408 through a second connecting pipe 416. The solenoid valve 414 controls the gas to enter the stir-fry fire nozzle seat 404 through the stir-fry fire air inlet pipe 408 to achieve the stir-fry function; through the design of the above structure, the solenoid valve 414 can control the stir-fry function to ensure that the gas is directly sprayed upward during stir-frying. Compared with the traditional gas supply method, it can reach a heat load of 7kW, making the entire cooking process more time-saving and flexible and convenient to control.

[0096] The first connecting pipe 415 and the second connecting pipe 416 are both made of aluminum pipes, which is beneficial to the stable transportation of the gas.

[0097] A support sleeve 409 is provided on the bottom plate 401 for installing a thermocouple and an ignition needle. Two support sleeves 409 are located on both sides of the stir-fry nozzle seat 404 to meet the installation requirements of the burner head 1.

[0098] The bottom plate 401 , the central fire nozzle seat 402 or the outer ring fire nozzle seat 403 are provided with supporting protrusions 410 for supporting the burner head 1 .

[0099] The bottom surface 212 of the bottom plate 401 is provided with supporting feet 413 .

[0100] The center fire cover 3 is as shown in Examples 1 to 3.

[0101] Example 1

[0102] like Figure 10 to Figure 11 As shown, the center fire cover 3 includes an end cover 301 and a support body 302 .

[0103] The end cover 301 is a closed disc-shaped structure.

[0104] The support body 302 and the end cover 301 are an integrally formed structure, the edge of the end cover 301 protrudes from the top edge of the support body 302, and the support body 302 is provided with at least one circle of fire outlet holes 304 and at least one circle of flame stabilizing holes 305 distributed along the circumferential direction.

[0105] A second inclined surface 303 is provided on one side of the support body 302 close to the end cover 301, which can not only meet the ignition requirements of the ignition hole 304 and the flame stabilizing hole 305, but also facilitates the cooperation with the central fire cover seat 102 to form a mixing chamber, thereby improving the combustion stability of the central fire cover 3.

[0106] The fire outlet hole 304 and the flame stabilizing hole 305 are both arranged on the second inclined surface 303, which is conducive to the flame acting on the bottom of the cookware and improving the combustion efficiency.

[0107] The fire outlet holes 304 and the flame stabilizing holes 305 are arranged parallel to each other, which can not only meet the fire outlet requirements of ordinary fire covers, but also do not affect the combustion function of the central fire cover 3. The application gives priority to using two circles of fire outlet holes 304 spaced apart from each other and one circle of flame stabilizing holes 305 located below, so as to improve the fire outlet stability and reliability of the central fire cover 3.

[0108] The above structural design not only facilitates the integrated processing and manufacturing of the end cover 301 and the support body 302, but also can meet the selection of ordinary fire covers, stir-fry fire covers and anti-dry burning fire covers, and is flexible and convenient to use.

[0109] An annular groove 306 is provided at the bottom of the support body 302 to facilitate the matching connection between the center fire cover 3 and the center fire cover seat 102.

[0110] Example 2

[0111] like Figures 12 to 15 As shown, the center fire cover 3 includes an end cover 301 and a support body 302 .

[0112] The end cover 301 is a circular ring structure with an opening at the center. The opening is provided with an inwardly concave chamfer.

[0113] The end cover 301 is provided with a liquid retaining ring 308 and a sleeve 309, which are arranged on the upper and lower sides of the end cover 301. The liquid retaining ring 308 and the sleeve are concentric circles with each other. Through the design of the liquid retaining ring 308, the soup can be reduced from flowing into the sleeve 309 to affect the stir-frying function.

[0114] The length of the sleeve 309 is greater than the length of the liquid retaining ring 308, and the inner diameter of the liquid retaining ring 308 is greater than the outer diameter of the sleeve 309, which is not only conducive to the gas being directly sprayed upward from the stir-frying fire hole 307 in the sleeve 309, but also can ensure that there is a certain amount of air at the outlet end of the stir-frying fire hole 307, thereby improving the combustion efficiency. The stir-frying fire hole 307 is provided in the sleeve 309, and the stir-frying fire hole 307 is connected to the opening, which is convenient for the gas to be directly sprayed stably.

[0115] The support body 302 and the end cover 301 are an integrally formed structure, the edge of the end cover 301 protrudes from the top edge of the support body 302, and the support body 302 is provided with at least one circle of fire outlet holes 304 and at least one circle of flame stabilizing holes 305 distributed along the circumferential direction.

[0116] The support body 302 is a straight cylindrical structure, which can not only meet the ignition requirements of the ignition holes 304 and the flame stabilizing holes 305 , but also facilitates cooperation with the central fire cover seat 102 to form a mixing chamber, thereby improving the combustion stability of the central fire cover 3 .

[0117] The fire outlet hole 304 and the flame stabilizing hole 305 are both arranged near the end cover 301, which is beneficial for the flame to act on the bottom of the cookware and improve the combustion efficiency.

[0118] The present application prefers to arrange the fire holes 304 and the flame stabilizing holes 305 at equal intervals on the left and right to form a complete circle, and there are two circles distributed in the upper and lower parts, which can not only meet the fire requirements of the stir-fry fire cover, but also does not affect the stir-fry function of the central fire cover 3.

[0119] The above structural design not only facilitates the integrated processing and manufacturing of the end cover 301 and the support body 302, but also can meet the selection of ordinary fire covers, stir-fry fire covers and anti-dry burning fire covers, and is flexible and convenient to use.

[0120] An annular groove 306 is provided at the bottom of the support body 302 to facilitate the matching connection between the center fire cover 3 and the center fire cover seat 102.

[0121] Example 3

[0122] like Figures 16 to 19 As shown, the center fire cover 3 includes an end cover 301 and a support body 302.

[0123] The end cover 301 is a circular ring structure with an opening at the center. The opening is an anti-dry burning hole 310 .

[0124] A wind shield 311 is provided on the end cover 301 , and the length of the wind shield 311 matches the length of the support body 302 . The wind shield 311 can not only protect the anti-dry burning probe, but also improve the detection accuracy.

[0125] A liquid baffle plate 312 is provided on the edge of the end cover 301, and an open groove 313 is provided on the support body 302. The open groove 313 is located directly below the liquid baffle plate 312. The open groove 313 is used to install a thermocouple and an ignition needle. The liquid baffle plate 312 can guide the dripping soup to the outside, reduce the contact between the soup and the thermocouple and the ignition needle, and extend the service life of the thermocouple and the ignition needle.

[0126] The support body 302 and the end cover 301 are an integrally formed structure, the edge of the end cover 301 protrudes from the top edge of the support body 302, and the support body 302 is provided with at least one circle of fire outlet holes 304 and at least one circle of flame stabilizing holes 305 distributed along the circumferential direction.

[0127] The upper and lower parts of the support body 302 are provided with second inclined surfaces 303 with opposite inclined directions, which can not only meet the ignition requirements of the ignition holes 304 and the flame stabilizing holes 305, but also facilitate the cooperation with the central fire cover seat 102 to form a mixing chamber, thereby improving the combustion stability of the central fire cover 3.

[0128] The fire outlet hole 304 and the flame stabilizing hole 305 are both arranged on the second inclined surface 303 located at the upper part, which is conducive to the flame acting on the bottom of the cookware and improving the combustion efficiency.

[0129] The fire outlet holes 304 and the flame stabilizing holes 305 are arranged at equal intervals on the left and right sides, which can not only meet the fire outlet requirements of the anti-dry burning fire cover, but also does not affect the anti-dry burning function of the central fire cover 3.

[0130] The above structural design not only facilitates the integrated processing and manufacturing of the end cover 301 and the support body 302, but also can meet the selection of ordinary fire covers, stir-fry fire covers and anti-dry burning fire covers, and is flexible and convenient to use.

[0131] A positioning ring 314 is provided at the bottom of the support body 302 , and an annular groove 306 is formed between the support body 302 and the end cover 301 to facilitate the matching connection between the center fire cover 3 and the center fire cover seat 102 .

[0132] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. An upward air inlet burner, comprising: A burner head, comprising an outer ring fire cover seat and at least one outer ring fire ejector pipe, the outer ring fire cover seat is provided with a fire distribution cavity, and the outer ring fire ejector pipe is used to supply gas to the fire distribution cavity; Features: The outer ring fire ejector tube is composed of a rectifier plate and an ejector groove with an opening on the top. The rectifier plate and the outer ring fire cover seat are an integrally formed structure. The air inlet of the outer ring fire ejector tube extends to the fire separation chamber through the ejector groove. Air and fuel gas enter the cavity between the rectifier plate and the ejector groove from the air inlet for rectification and mixing to form a mixed gas, which is then input into the fire separation chamber to achieve stable flow of the mixed gas and avoid flame flashback.

2. The upward air inlet burner according to claim 1, characterized in that: The rectifying plate and the ejection groove are both in an arc-shaped structure or a stepped structure with inclined distribution.

3. The upward air inlet burner according to claim 1, characterized in that: The rectifying plate includes an integrally formed mounting plate, a first rectifying panel and a second rectifying panel, wherein the second rectifying panel is connected to the first rectifying panel via the mounting plate, and the first rectifying panel is connected to the bottom surface of the fire dividing chamber.

4. The upward air inlet burner according to claim 1, characterized in that: It also includes a central fire cover seat and a central fire ejection tube that are interconnected. The central fire cover seat is connected to the inner side of the outer ring fire cover seat through a connecting plate and the central fire ejection tube. A positioning sleeve is detachably connected to the central fire cover seat.

5. The upward air inlet burner according to claim 4, characterized in that: The connecting plate is provided with a positioning hole and a first positioning groove for positioning the thermocouple and the ignition needle.

6. The upward air inlet burner according to claim 1, characterized in that: It also includes an outer ring fire cover, which includes a first inclined surface and a second inclined surface, the second inclined surface is connected to the first inclined surface and is located on the outside of the first inclined surface, the inclination directions of the first inclined surface and the second inclined surface are opposite, and the first inclined surface is provided with arc grooves evenly distributed in a ring shape, the top of the arc groove is provided with an opening, and the bottom of the arc groove is provided with a bottom surface with the same inclination direction as the first inclined surface.

7. The upward air inlet burner according to claim 6, characterized in that: The first inclined surface and the second inclined surface are straight surfaces or curved surfaces.

8. The upward air inlet burner according to claim 6, characterized in that: The outer circumferential side surface of the second inclined surface is evenly distributed with connecting surfaces, and the connecting surfaces are provided with a row of second fire outlet holes. Grooves are evenly arranged between two adjacent connecting surfaces, and each of the grooves is provided with two first fire outlet holes distributed up and down.

9. The upward air inlet burner according to claim 8, characterized in that: The distance between two adjacent first fire holes is greater than the distance between two adjacent second fire holes, and the aperture of the upper first fire hole is greater than the aperture of the lower first fire hole.

10. The upward air inlet burner according to claim 6, characterized in that: A first retaining ring is provided at the bottom of the first inclined surface, and a second retaining ring is provided at the bottom of the second inclined surface. The first retaining ring and the second retaining ring are concentric circles with each other. A second positioning groove is provided on the first retaining ring. The bottom surfaces of the first retaining ring and the second retaining ring are flush.

11. The upward air inlet burner according to claim 1, characterized in that: It also includes a central fire cover, which includes an end cover and a support body. The support body and the end cover are an integrally processed structure. The edge of the end cover protrudes from the top edge of the support body. The support body is distributed along the circumferential direction with at least one circle of fire outlet holes and at least one circle of flame stabilizing holes.

12. The upward air inlet burner according to claim 11, characterized in that: The support body is a straight cylindrical structure, or a second inclined surface is provided on a side close to the end cover, or the upper and lower parts are provided with the second inclined surfaces with opposite inclined directions.

13. The upward air inlet burner according to claim 11, characterized in that: The fire outlet hole and the flame stabilizing hole are both arranged on the second inclined surface or close to the end cover, and the fire outlet hole and the flame stabilizing hole are arranged parallel to each other vertically or arranged with equal intervals horizontally.

14. The upward air inlet burner according to claim 11, characterized in that: The bottom of the support body is provided with an annular groove or a positioning ring, or the support body and the end cover cooperate to form the annular groove.

15. The upward air inlet burner according to claim 11, characterized in that: The end cover is a closed disc-shaped structure or a ring-shaped structure with an opening in the center.

16. A burner center fire cover according to claim 15, characterized in that: The end cover is provided with a liquid retaining ring and a sleeve, the liquid retaining ring and the sleeve ring are arranged on the upper and lower sides of the end cover, the liquid retaining ring and the sleeve ring are concentric circles with each other, the length of the sleeve is greater than the length of the liquid retaining ring, and the inner diameter of the liquid retaining ring is greater than the outer diameter of the sleeve.

17. A burner center fire cover according to claim 15, characterized in that: The end cover is provided with a wind shield, the length of which matches the length of the support body, the edge of the end cover is provided with a liquid baffle, the support body is provided with an open slot, and the open slot is located directly below the liquid baffle.

18. The upward air inlet burner according to claim 1, characterized in that: It also includes a base, which includes a bottom plate, and the bottom plate is provided with a center fire air inlet, a center fire nozzle seat, an outer ring fire air inlet and at least one outer ring fire nozzle seat, the center fire nozzle seat and the outer ring fire nozzle seat are located on the top surface of the bottom plate, the center fire air inlet and the outer ring fire air inlet are located on the bottom surface of the bottom plate, the center fire air inlet is connected to the center fire nozzle seat, the outer ring fire air inlet is connected to the outer ring fire nozzle seat, and two adjacent outer ring fire nozzle seats are connected by a gas pipe, and the gas pipe is provided on the bottom surface of the bottom plate.

19. The upward air inlet burner according to claim 18, characterized in that: It also includes a stir-fry component, which includes a solenoid valve, a stir-fry fire air intake pipe and a stir-fry fire nozzle seat, the outer ring fire air intake port or the central fire air intake port is connected to a gas distribution joint, the gas distribution joint is connected to the solenoid valve through a first connecting pipe, and the solenoid valve is connected to the stir-fry fire air intake pipe through a second connecting pipe. The electromagnetic valve is used to control the gas to enter the stir-frying fire nozzle seat through the stir-frying fire air inlet pipe, so as to realize the stir-frying function.

20. The upward air inlet burner according to claim 18, characterized in that: The bottom plate is provided with a supporting sleeve for mounting a thermocouple and an ignition needle, and the bottom plate, the center fire nozzle seat or the outer ring fire nozzle seat are provided with supporting protrusions for supporting the burner head.

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