Fire cover, combustor and gas stove

Abstract

The utility model discloses a fire cover, a combustor and a gas stove, the fire cover comprises a first cover body and a second cover body, the first cover body surrounds the second cover body, the first cover body and the second cover body are split parts and are suitable for being connected and fixed through a connecting means, the first cover body is of an integrated structure and is provided with a first fire outlet gap, and the second cover body is of an integrated structure and is provided with a second fire outlet gap. And a second fire outlet gap is formed between the first cover body and the second cover body.

Description

Technical Field

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

[0002] In the related art, the fire cover needs to be assembled by at least three parts to form at least two fire outlets. However, the assembly between multiple parts will cause the user to perform multiple operations during disassembly and assembly. The disassembly and assembly process is relatively cumbersome, the structural stability of the fire cover is relatively poor, and the probability of improper fitting is also high. Utility Model Content

[0003] The present application aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present application proposes a fire cover.

[0004] To achieve the above-mentioned objectives, the present application discloses a fire cover, which includes a first cover body and a second cover body, the first cover body surrounds the second cover body, the first cover body and the second cover body are split components and are suitable for being connected and fixed by connection means, the first cover body is an integrated structure and is provided with a first fire outlet seam, and a second fire outlet seam is provided between the first cover body and the second cover body.

[0005] In some embodiments of the present application, the first cover body includes a first outer cover portion, a first inner cover portion and a first connecting rib, the first outer cover portion surrounds the first inner cover portion, the first fire outlet seam is arranged between the first outer cover portion and the first inner cover portion, the first connecting rib is arranged between the first outer cover portion and the first inner cover portion, and the first connecting rib, the first outer cover portion and the first inner cover portion are integrated, the number of the first connecting ribs is multiple, and the multiple first connecting ribs are arranged alternately along the direction surrounding the first inner cover portion.

[0006] In some embodiments of the present application, a first ventilation hole is provided between adjacent first connecting ribs, and the first ventilation hole is connected to the first fire outlet seam and is provided upstream of the first fire outlet seam.

[0007] In some embodiments of the present application, the connection means is a screw connection, and the fire cover includes screws, and the screws are suitable for moving upward from the lower side of the fire cover to connect and fix the first cover body and the second cover body.

[0008] In some embodiments of the present application, the connection means is a screw connection, the first cover body is provided with a first mating surface, the second cover body is provided with a second mating surface, the first mating surface and the second mating surface are suitable for axial abutment along the screw connection, the first cover body is provided with a first connecting hole, the first connecting hole is connected to the second fire outlet seam, and the gas is suitable for passing through the first connecting hole and entering the second fire outlet seam.

[0009] In some embodiments of the present application, the first cover body is provided with a first connecting hole, the first connecting hole is connected to the second fire outlet seam, the gas is suitable for passing through the first connecting hole and entering the second fire outlet seam, the first cover body is suitable for covering the first cavity and the second cavity of the burner, the first fire outlet seam is suitable for connecting to the first cavity of the burner, and the first connecting hole is suitable for connecting to the second cavity of the burner.

[0010] In some embodiments of the present application, the first cover body is provided with a first axial sealing surface, a first radial sealing surface, a second axial sealing surface, a third axial sealing surface and a third radial sealing surface, the first axial sealing surface is suitable for axial sealing with the first annular wall of the burner, the first radial sealing surface is suitable for axial sealing with the first annular wall of the burner, the second axial sealing surface is suitable for axial sealing with the second annular wall of the burner, the third axial sealing surface is suitable for axial sealing with the third annular wall of the burner, the third radial sealing surface is suitable for radial sealing with the third annular wall of the burner, the first annular wall of the burner surrounds the second annular wall, the second annular wall of the burner surrounds the third annular wall, the first cavity of the burner is arranged between the first annular wall and the second annular wall, and the second cavity of the burner is arranged between the second annular wall and the third annular wall.

[0011] In some embodiments of the present application, the first axial sealing surface and the first radial sealing surface intersect and are perpendicular to each other, the third axial sealing surface and the third radial sealing surface intersect and are perpendicular to each other, and the first axial sealing surface, the second axial sealing surface and the third axial sealing surface are arranged in the same plane.

[0012] In some embodiments of the present application, the first axial sealing surface is located between the first radial sealing surface and the second axial sealing surface, and the third axial sealing surface is located between the second axial sealing surface and the third radial sealing surface.

[0013] In some embodiments of the present application, one of the first fire outlet slot and the second fire outlet slot is suitable for ejecting induced air and gas, and the other of the first fire outlet slot and the second fire outlet slot is suitable for ejecting blast air and gas.

[0014] The present application also discloses a fire cover, which includes a first cover body and a second cover body, wherein the first cover body surrounds the second cover body, the first cover body and the second cover body are split components and are suitable for being connected and fixed by connecting means, a first fire outlet seam is provided between the first cover body and the second cover body, and the second cover body is an integrated structure and is provided with a second fire outlet seam.

[0015] In some embodiments of the present application, the second cover body includes a second outer cover portion, a second inner cover portion and a second connecting rib, the second outer cover portion surrounds the second inner cover portion, the second fire outlet seam is arranged between the second outer cover portion and the second inner cover portion, the second connecting rib is arranged between the second outer cover portion and the second inner cover portion, and the second connecting rib, the second outer cover portion and the second inner cover portion are integrated, the number of the second connecting ribs is multiple, and the multiple second connecting ribs are arranged alternately along the direction surrounding the second inner cover portion.

[0016] In some embodiments of the present application, a second ventilation hole is provided between adjacent second connecting ribs, and the second ventilation hole is connected to the second fire outlet slot and is provided upstream of the second fire outlet slot.

[0017] In some embodiments of the present application, the connection means is a screw connection, and the fire cover includes screws, and the screws are suitable for moving upward from the lower side of the fire cover to connect and fix the first cover body and the second cover body.

[0018] In some embodiments of the present application, the connection means is a screw connection, the first cover body is provided with a first mating surface, the second cover body is provided with a second mating surface, the first mating surface and the second mating surface are suitable for axial abutment along the screw connection, the second cover body is provided with a second connecting hole, the second connecting hole is connected to the first fire outlet seam, and the gas is suitable for passing through the second connecting hole and entering the first fire outlet seam.

[0019] In some embodiments of the present application, the second cover body is provided with a second communicating hole, the second communicating hole is connected to the first fire outlet seam, the gas is suitable for passing through the second communicating hole and entering the first fire outlet seam, the second cover body is suitable for covering the first cavity and the second cavity of the burner, the second communicating hole is suitable for communicating with the first cavity of the burner, and the second fire outlet seam is suitable for communicating with the second cavity of the burner.

[0020] In some embodiments of the present application, the second cover body is provided with a fourth axial sealing surface, a fourth radial sealing surface, a fifth axial sealing surface, a sixth axial sealing surface and a sixth radial sealing surface, the fourth axial sealing surface is suitable for axial sealing with the first annular wall of the burner, the fourth radial sealing surface is suitable for radial sealing with the first annular wall of the burner, the fifth axial sealing surface is suitable for axial sealing with the second annular wall of the burner, the sixth axial sealing surface is suitable for axial sealing with the third annular wall of the burner, the sixth radial sealing surface is suitable for radial sealing with the third annular wall of the burner, the first annular wall of the burner surrounds the second annular wall, the second annular wall of the burner surrounds the third annular wall, the first cavity of the burner is arranged between the first annular wall and the second annular wall, and the second cavity of the burner is arranged between the second annular wall and the third annular wall.

[0021] In some embodiments of the present application, the fourth axial sealing surface and the fourth radial sealing surface intersect perpendicularly, the sixth axial sealing surface and the sixth radial sealing surface intersect perpendicularly, and the fourth axial sealing surface, the fifth axial sealing surface and the sixth axial sealing surface are arranged in the same plane.

[0022] In some embodiments of the present application, the fourth axial sealing surface is located between the fourth radial sealing surface and the fifth axial sealing surface, and the sixth axial sealing surface is located between the fifth axial sealing surface and the sixth radial sealing surface.

[0023] In some embodiments of the present application, one of the first fire outlet slot and the second fire outlet slot is suitable for ejecting induced air and gas, and the other of the first fire outlet slot and the second fire outlet slot is suitable for ejecting blast air and gas.

[0024] A second aspect of the present application discloses a burner, comprising a burner head and the above-mentioned fire cover provided on the burner head.

[0025] A third aspect of the present application discloses a gas stove, which includes the burner described above.

[0026] Other advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other designs can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 Schematic diagram of a burner in some embodiments;

[0029] Figure 2 An exploded view of a burner in some embodiments;

[0030] Figure 3 A cross-sectional view of a burner in some embodiments;

[0031] Figure 4 for Figure 3 An enlarged view marked A is shown;

[0032] Figure 5 for Figure 3 Exploded view of the fire cover / outer ring fire cover of the burner shown;

[0033] Figure 6 for Figure 3 A cross-sectional view of the fire cover / outer ring fire cover of the burner shown;

[0034] Figure 7 for Figure 6 The enlarged image marked as B in the figure;

[0035] Figure 8 for Figure 3 Cross-sectional view of the burner's fire cover / outer ring fire cover (viewing angle and Figure 6 different);

[0036] Figure 9 for Figure 8 The enlarged image marked as C in the figure;

[0037] Figure 10 for Figure 3 A schematic diagram of a first cover of the burner shown;

[0038] Figure 11 for Figure 10 The enlarged image marked with D in the figure;

[0039] Figure 12 for Figure 3 Schematic diagram of the first cover of the burner shown (viewing angle and Figure 10 different);

[0040] Figure 13 for Figure 12 The enlarged image marked with E in the figure;

[0041] Figure 14 The cross-sectional view of the burner in some embodiments (structure and Figure 3 different);

[0042] Figure 15 for Figure 14 The enlarged image marked F in the figure;

[0043] Figure 16 for Figure 14 Exploded view of the fire cover / outer ring fire cover of the burner shown;

[0044] Figure 17 for Figure 14 A cross-sectional view of the fire cover / outer ring fire cover of the burner shown;

[0045] Figure 18 for Figure 17 The enlarged image marked with G in the figure;

[0046] Figure 19 for Figure 14 Cross-sectional view of the burner's fire cover / outer ring fire cover (viewing angle and Figure 17 different);

[0047] Figure 20 for Figure 19 The enlarged image marked with H in the figure;

[0048] Figure 21 for Figure 14 A schematic diagram of a first cover of the burner shown;

[0049] Figure 22 for Figure 21 The enlarged view marked with I in FIG;

[0050] Figure 23 for Figure 14 Schematic diagram of the first cover of the burner shown (viewing angle and Figure 21 different);

[0051] Figure 24 for Figure 23 The enlarged image marked with J in the figure;

[0052] Figure 25 for Figure 14 A schematic diagram of a second cover of the burner shown;

[0053] Figure 26 A cross-sectional view of a fire cover / outer ring fire cover in some embodiments;

[0054] Figure 27 for Figure 26 The enlarged image marked with K in the figure;

[0055] Figure 28 The cross-sectional view of the burner in some embodiments (structure and Figure 3 、 Figure 14 different);

[0056] Figure 29 for Figure 28 The enlarged image marked with L in the figure;

[0057] Figure 30 for Figure 28 Exploded view of the fire cover / outer ring fire cover of the burner shown;

[0058] Figure 31 for Figure 28 A cross-sectional view of the fire cover / outer ring fire cover of the burner shown;

[0059] Figure 32 for Figure 31 The enlarged image marked with M in the figure;

[0060] Figure 33 for Figure 28 Cross-sectional view of the fire cover / outer ring fire cover of the burner shown; (viewing angle and Figure 31 different);

[0061] Figure 34 for Figure 33The enlarged image marked with N in the figure;

[0062] Figure 35 for Figure 28 A schematic diagram of a second cover of the burner shown;

[0063] Figure 36 for Figure 35 The enlarged image marked with O in the figure;

[0064] Figure 37 for Figure 28 Schematic diagram of the second cover of the burner shown (viewing angle and Figure 35 different);

[0065] Figure 38 for Figure 37 The enlarged image marked with P in the figure;

[0066] Figure 39 The cross-sectional view of the burner in some embodiments (structure and Figure 3 、 Figure 14 、 Figure 28 different);

[0067] Figure 40 for Figure 39 The enlarged image marked with Q in the figure;

[0068] Figure 41 for Figure 39 Exploded view of the fire cover / outer ring fire cover of the burner shown;

[0069] Figure 42 for Figure 41 The enlarged image marked with R in the figure;

[0070] Figure 43 for Figure 39 A cross-sectional view of the fire cover / outer ring fire cover of the burner shown;

[0071] Figure 44 for Figure 43 The enlarged image marked with S in the figure;

[0072] Figure 45 for Figure 39 Cross-sectional view of the burner's fire cover / outer ring fire cover (viewing angle and Figure 43 different);

[0073] Figure 46 for Figure 45 The enlarged image marked with T in the figure;

[0074] Figure 47 38 is a schematic diagram of a first cover of the burner;

[0075] Figure 48 The fire cover / outer ring fire cover cross-sectional view in some embodiments (structure and Figure 26different);

[0076] Figure 49 for Figure 48 The enlarged image marked with U in the figure;

[0077] Figure 50 Schematic diagram of the burner in some embodiments.

[0078] Description of Figure Numbers:

[0079] Burner 100, fire cover / outer ring fire cover 1000, first cover body 1100, first outer cover part 1110, first inner cover part 1120, first connecting rib 1130, first vent hole 1140, first communicating hole 1150, first axial sealing surface 1161, first radial sealing surface 1162, second axial sealing surface 1171, third axial sealing surface 1181, third radial sealing surface 1182, first mating surface 1190, second cover body 1200, second outer cover part 1210, second inner cover part 1220, second connecting rib 1230, second vent hole 1240, second Connecting hole 1250, fourth axial sealing surface 1261, fourth radial sealing surface 1262, fifth axial sealing surface 1271, sixth axial sealing surface 1281, sixth radial sealing surface 1282, second mating surface 1290, first fire outlet gap 1310, second fire outlet gap 1320, first fastening hole 1510, second fastening hole 1520, burner head 2000, first annular wall 2100, second annular wall 2200, third annular wall 2300, first cavity 1241, second cavity 1242, first ejector tube 3100, second ejector tube 3200, inner ring fire cover 4000.

[0080] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0081] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0082] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0083] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0084] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0085] In the related art, if the fire cover is to form the first fire outlet seam and the second fire outlet seam, it is usually achieved by cooperating with three independent components. For example, the fire cover includes three components, and the three components are manufactured independently of each other. During assembly, the three components need to be assembled to the burner in sequence. The first component surrounds the second component, and the second component surrounds the third component. A first fire outlet seam is formed between the first component and the second component, and a second fire outlet seam is formed between the second component and the third component. It can be seen that in order to form the first fire outlet seam and the second fire outlet seam, at least three assembly operations are required. When disassembling the fire cover, at least three operations are also required to disassemble the three components. The entire disassembly and assembly process is cumbersome, and the first component needs to cooperate with the second component, and the second component needs to cooperate with the third component. This will greatly increase the probability of poor coordination between the components, so it is necessary to make improvements.

[0086] The first aspect of the present application discloses a fire cover 1000, which is combined with Figures 3 to 11 As shown, the fire cover 1000 includes a first cover body 1100 and a second cover body 1200, wherein the first cover body 1100 and the second cover body 1200 are split components, the first cover body 1100 surrounds the second cover body 1200, and the first cover body 1100 and the second cover body 1200 are connected and fixed by connecting means. The first cover body 1100 is designed as an integrated structure and is provided with a first fire outlet seam 1310, and a second fire outlet seam 1320 is provided between the first cover body 1100 and the second cover body 1200.

[0087] Specifically, the fire cover 1000 is a component for gas ejection, and is generally made of high-temperature resistant metal materials. For example, the fire cover 1000 is made of brass, cast iron or stainless steel. It can be understood that the fire cover 1000 needs to be installed on the burner head 2000. The fire cover 1000 and the burner head 2000 together enclose a certain space. The gas enters the space between the fire cover 1000 and the burner head 2000 and then ejects from the fire cover 1000. The gas can be gas, air, or a mixture of gas and air. In this embodiment, gas refers to a mixture of gas and air, the same below.

[0088] The fire cover 1000 has a first fire outlet seam 1310 and a second fire outlet seam 1320. The gas is ejected from the fire cover 1000, specifically from the first fire outlet seam 1310 and the second fire outlet seam 1320. The fire cover 1000 and the burner head 2000 can enclose different spaces, and the different spaces are respectively connected to the first fire outlet seam 1310 and the second fire outlet seam 1320. In this way, the gas enters different spaces respectively and then ejects from the first fire outlet seam 1310 and the second fire outlet seam 1320 accordingly. Alternatively, the same space can be connected to the first fire outlet seam 1310 and the second fire outlet seam 1320.

[0089] The first fire slit 1310 is further away from the center of the fire cover 1000 than the second fire slit 1320. The center of the fire cover 1000 refers to the center of the fire slit range. For example, the fire cover 1000 is applied to a gas stove. In other words, the gas stove includes a burner 100, and the burner 100 includes the fire cover 1000. When the gas stove is installed in a usage environment, the side of the gas stove close to the ground is the bottom, and the side away from the ground is the top. When observing the fire cover 1000 from top to bottom, the first fire slit 1310 is further outward than the second fire slit 1320, and the second fire slit 1320 is further inward than the first fire slit 1310. Furthermore, the first fire slit 1310 is generally annular, and the second fire slit 1320 is generally annular. The first fire slit 1310 surrounds the second fire slit 1320, thereby forming a ring-shaped flame. The first fire slit 1310 and the second fire slit 1320 are formed as follows.

[0090] The fire cover 1000 includes a first cover body 1100 and a second cover body 1200. The first cover body 1100 and the second cover body 1200 are split components. The so-called split components mean that the first cover body 1100 and the second cover body 1200 are manufactured separately and independently of each other, thus constituting two components. The first cover body 1100 surrounds the second cover body 1200, thereby forming a second fire outlet seam 1320 between the first cover body 1100 and the second cover body 1200. The first cover body 1100 is designed as an integrated structure and is formed with a first fire outlet seam 1310. The so-called integrated structure means that the first cover body 1100 constitutes a single component rather than being assembled from at least two components. The integrated structure can be formed by one-piece molding, or formed as one-piece and then machined. The one-piece molding process includes casting molding, forging molding and the like. That is, the first cover body 1100 of the integrated structure is formed with the first fire outlet seam 1310. The first fire outlet seam 1310 can be formed on the first cover body 1100 during the integral molding process, or the first fire outlet seam 1310 can be formed on the fire cover 1000 through machining after the integral molding. In the related art, three components need to cooperate with each other to form the first fire outlet seam 1310 and the second fire outlet seam 1320. In this embodiment, the first fire outlet seam 1310 and the second fire outlet seam 1320 can be formed by the cooperation of the first cover body 1100 and the second cover body 1200. Compared with the solutions of the related art, on the basis of forming the first fire outlet seam 1310 and the second fire outlet seam 1320, this embodiment can reduce the number of components (from three to two). Although the first cover body 1100 and the second cover body 1200 still need to cooperate with each other in this embodiment, the first fire outlet seam 1310 can be formed during the manufacturing process of the first cover body 1100 and will not change. Compared with the cooperation between the three components in the related art, the solution in this embodiment effectively reduces the possibility of inadequate cooperation. It can be understood that the second cover body 1200 in this embodiment can also be an integrated structure.

[0091] In other embodiments, the fire cover 1000 can be designed as an integrated structure and the first fire outlet seam 1310 and the second fire outlet seam 1320 can be formed simultaneously. However, this places higher requirements on the processing of the fire cover 1000 and the shape structure of the fire cover 1000. In this embodiment, the first cover body 1100 is designed as an integrated structure to form the first fire outlet seam 1310, and then the first cover body 1100 is matched with the second cover body 1200 to form the second fire outlet seam 1320. This ensures that the first fire outlet seam 1310 and the second fire outlet seam 1320 are formed while taking into account the manufacturing difficulty.

[0092] The first cover 1100 and the second cover 1200 are connected and fixed by a connecting means. The connecting means is a method of connecting and fixing two parts together. For example, the connecting means can be a variety of methods such as screw connection, welding, and buckle connection. The connecting means can achieve the connection and fixation between the first cover 1100 and the second cover 1200, so that the relative position between the first cover 1100 and the second cover 1200 is not easy to change, that is, the second fire outlet gap 1320 is not easy to change. It can be understood that when the first cover 1100 and the second cover 1200 are connected and fixed by the connecting means, it is equivalent to the first cover 1100 and the second cover 1200 being combined to form a single part. The first cover 1100 and the second cover 1200 are connected and fixed at the factory. The user only needs to operate once to complete assembly or disassembly. This reduces the number of operations required for the user to assemble and disassemble the fire cover 1000, which is conducive to improving the user experience.

[0093] Combine Figures 4 to 13 As shown, in some embodiments, the first cover body 1100 includes a first outer cover portion 1110 and a first inner cover portion 1120. Since the first cover body 1100 is an integrated structure, the first outer cover portion 1110 and the first inner cover portion 1120 are two corresponding parts of the first cover body 1100. In this embodiment, the first outer cover portion 1110 surrounds the first inner cover portion 1120 and there is a certain distance between the first outer cover portion 1110 and the first inner cover portion 1120, so that a first fire outlet gap 1310 is formed between the first outer cover portion 1110 and the first inner cover portion 1120.

[0094] For example, the first outer cover portion 1110 is roughly annular and has a certain height in the up and down directions, the first inner cover portion 1120 is roughly annular and has a certain height in the up and down directions, the second cover body 1200 is roughly annular and has a certain height in the up and down directions, the first inner cover portion 1120 surrounds the second cover body 1200, the first fire outlet seam 1310 is arranged between the first outer cover portion 1110 and the first inner cover portion 1120, so as to be roughly annular, and the second fire outlet seam 1320 is arranged between the first inner cover portion 1120 and the second cover body 1200, so as to be roughly annular.

[0095] In order to ensure the integration of the first outer cover portion 1110 and the first inner cover portion 1120, the first cover body 1100 also includes a first connecting rib 1130. The first connecting rib 1130 is arranged between the first outer cover portion 1110 and the first inner cover portion 1120. The first outer cover portion 1110, the first connecting rib 1130 and the first inner cover portion 1120 form an integrated whole, and the number of the first connecting ribs 1130 is multiple, and multiple means two or more, the same below. Along the direction surrounding the first inner cover portion 1120, the multiple first connecting ribs 1130 are designed to be arranged alternately.

[0096] Specifically, by providing the first connecting rib 1130, the first connecting rib 1130 can achieve support between the first outer cover portion 1110 and the first inner cover portion 1120, thereby forming a first fire outlet gap 1310 between the first outer cover portion 1110 and the first inner cover portion 1120. It can be understood that since the first outer cover portion 1110 surrounds the first inner cover portion 1120, it is necessary to achieve support between the first outer cover portion 1110 and the first inner cover portion 1120 in the direction surrounding the first inner cover portion 1120. For this reason, in this embodiment, the number of first connecting ribs 1130 is multiple, and the multiple first connecting ribs 1130 are alternately arranged along the direction surrounding the first inner cover portion 1120, and each first connecting rib 1130 is integrated with the first outer cover portion 1110 and the first inner cover portion 1120.

[0097] It is understood that the plurality of first connecting ribs 1130 are arranged alternately, thereby forming first vent holes 1140 between adjacent first connecting ribs 1130 to allow gas to pass through. For example, after the first cover 1100 is integrally formed, machining such as grooving or drilling is performed to form the first fire slits 1310 and the first vent holes 1140 (when forming the first vent holes 1140, the portion between adjacent first vent holes 1140 constitutes the first connecting ribs 1130).

[0098] Further, combined with Figure 6 、 Figure 7 、 Figure 12 and Figure 13As shown, in some embodiments, the first connecting rib 1130 is arranged upstream of the first fire outlet slit 1310, so that the first air vent 1140 is located upstream of the first fire outlet slit 1310, that is, the gas first passes through the first air vent 1140 and then flows into the first fire outlet slit 1310, and finally ejected from the first fire outlet slit 1310 and ignited to form a flame. It can be understood that since the multiple first connecting ribs 1130 are arranged alternately, the multiple first air vents 1140 formed in this way are also arranged alternately. Taking two first air vents 1140 as an example, the gas will form two air flows after passing through the two first air vents 1140. If these two air flows directly leave the first cover body 1100, then two flames will be easily formed, which is not conducive to forming a continuous flame in the annular direction, nor is it conducive to the flame transmission along the annular direction. For this reason, in this embodiment, the first connecting rib 1130 is arranged upstream of the first fire outlet slit 1310, so that the first connecting rib 1130 is arranged upstream of the first fire outlet slit 1310. An air vent 1140 is located upstream of the first fire outlet slit 1310. The gas first passes through the first air vent 1140 and then flows into the first fire outlet slit 1310. Continuing to use the two first air vents 1140 as an example, the gas will form two air flows after passing through the two first air vents 1140. The two air flows are not directly discharged from the first cover body 1100, but enter the first fire outlet slit 1310. The two air flows can be re-converged and mixed in the first fire outlet slit 1310, and finally sprayed out of the first fire outlet slit 1310. In this way, the formation of two flames can be avoided to the greatest extent, and a continuous flame can be formed.

[0099] In some embodiments, the first fire slit 1310 and the first air vent 1140 intersect to form a first corner, the first air vent 1140 constitutes an upstream flow section, and the first fire slit 1310 constitutes a downstream flow section. During the gas ejection process, the gas flows through the first air vent 1140 and the first fire slit 1310 in sequence, and finally ejects from the first fire slit 1310. By setting the first corner between the first fire slit 1310 and the first air vent 1140, the gas needs to pass through the first corner when flowing from the first air vent 1140 to the first fire slit 1310, that is, the gas needs to turn when flowing from the first air vent 1140 to the first fire slit 1310, which is conducive to further mixing of the gas and deceleration, thereby improving the uniformity and stability of the gas ejection.

[0100] In some embodiments, the connection method is screw connection, that is, the first cover 1100 and the second cover 1200 are fixed to each other by screw connection. In other words, the first cover 1100 is provided with corresponding holes for screw connection, the second cover 1200 is provided with corresponding holes for screw connection, and the fire cover 1000 includes screws, and the screws pass through the corresponding holes to achieve the connection and fixation between the first cover 1100 and the second cover 1200.

[0101] Furthermore, the screws are used to move upward from the bottom side of the fire cover 1000 to achieve a connection and fixation between the first cover body 1100 and the second cover body 1200. Since the fire cover 1000 is installed on the burner head 2000, by driving the screws in this way, the screws can be hidden after the fire cover 1000 is installed on the burner head 2000, avoiding exposure. For example, during the screwing process, the screws move upward from the bottom side of the fire cover 1000, and the screws sequentially pass through the holes of the first cover body 1100 and are connected and fastened to the holes of the second cover body 1200. The holes of the second cover body 1200 are blind holes.

[0102] Combine Figures 14 to 25 As shown, in some embodiments, the first cover 1100 and the second cover 1200 are matched in the following manner: the first cover 1100 is provided with a first mating surface 1190, and the second cover 1200 is provided with a second mating surface 1290. When the first cover 1100 and the second cover 1200 are connected and fixed, the first mating surface 1190 and the second mating surface 1290 abut against each other. In this embodiment, the first mating surface 1190 and the second mating surface 1290 abut against each other along the axial direction of the screw connection. In this way, the first mating surface 1190 can generate a substantially perpendicular force on the second mating surface 1290, and the second mating surface 1290 can also generate a substantially perpendicular force on the first mating surface 1190, effectively achieving a seal between the first mating surface 1190 and the second mating surface 1290, and preventing gas entering the second fire outlet gap 1320 from leaking between the first mating surface 1190 and the second mating surface 1290.

[0103] For example, a second fire outlet gap 1320 is formed between the top of the second cover body 1200 and the first cover body 1100, and a second mating surface 1290 is formed on the bottom surface of the second cover body 1200. The second mating surface 1290 and the first mating surface 1190 are abutted together in the up and down directions. The first cover body 1100 is provided with a first fastening hole 1510, and the second cover body is provided with a second fastening hole 1520. The first cover body 1100 and the second cover body 1200 are screwed in a bottom-up direction (the axial direction of the screw connection is the axial direction of the screw, and the axial direction of the screw here is the up and down direction). The screws pass through the first fastening hole 1510 and the second fastening hole 1520 and are tightened. During the process of tightening the screws, the first mating surface 1190 and the second mating surface 1290 are abutted against each other to be sealed, and the gas entering the second fire outlet gap 1320 is ejected from the second fire outlet gap 1320. In order to allow gas to enter the second fire outlet gap 1320, it is necessary to open a first connecting hole 1150 on the first cover body 1100 (such as opening it on the first inner cover part 1120). The first connecting hole 1150 is connected to the second fire outlet gap 1320, and the gas can enter the second fire outlet gap 1320 through the first connecting hole 1150.

[0104] Further, combined with Figures 14 to 18As shown, the first cover 1100 is used to cover the first cavity 1241 and the second cavity 1242 of the burner 2000 , the first fire outlet slot 1310 is in communication with the first cavity 1241 , and the first communicating hole 1150 is in communication with the second cavity 1242 .

[0105] Specifically, the fire cover 1000 needs to be assembled on the burner head 2000. The burner head 2000 has a first cavity 1241 and a second cavity 1242. The first fire outlet gap 1310 is connected to the first cavity 1241, and the second fire outlet gap 1320 is connected to the second cavity 1242. The gas entering the first cavity 1241 is ejected through the first fire outlet gap 1310, and the gas entering the second cavity 1242 is ejected through the second fire outlet gap 1320. In this embodiment, the first cover body 1100 covers the first cavity 1241 and the second cavity 1242, that is, the first cover body 1100 is supported on the burner head 2000 and can form a seal with the first cavity 1241 and the second cavity 1242 to prevent gas leakage from between the fire cover 1000 and the burner head 2000. In other words, the sealing surfaces for covering the first cavity 1241 and the second cavity 1242 are both arranged on the first cover body 1100, thereby reducing the difficulty of precise matching of the fire cover 1000 and the burner head 2000.

[0106] For example, combined with Figure 15 and Figure 50 As shown, the burner head 2000 includes a first ring wall 2100, a second ring wall 2200 and a third ring wall 2300. The first ring wall 2100 surrounds the second ring wall 2200, and the second ring wall 2200 surrounds the third ring wall 2300. A first cavity 1241 is provided between the first ring wall 2100 and the second ring wall 2200, and a second cavity 1242 is provided between the second ring wall 2200 and the third ring wall 2300. When the fire cover 1000 is assembled to the burner head 2000, the first cover body 1100 needs to cooperate with the first ring wall 2100, the second ring wall 2200 and the third ring wall 2300 so as to be supported on the first ring wall 2100, the second ring wall 2200 and the third ring wall 2300, and realize the enclosed first cavity 1241 and the second cavity 1242. The first cover body 1100 needs to form a seal with the first annular wall 2100, and the first cover body 1100 also needs to form a seal with the second annular wall 2200. The first cover body 1100 also needs to form a seal with the third annular wall 2300. In this way, the gas entering the first cavity 1241 is ejected through the first fire outlet gap 1310, and the first connecting hole 1150 is connected with the second cavity 1242. The gas entering the second cavity 1242 passes through the first connecting hole 1150 and enters the second fire outlet gap 1320, and is finally ejected from the second fire outlet gap 1320.

[0107] The sealing between the first cover 1100 and the furnace head 2000 is achieved by setting a sealing surface. Figure 8 、 Figure 9 、 Figure 19 and Figure 20 As shown, in some embodiments, the first cover body 1100 is provided with a first radial sealing surface 1162, a first axial sealing surface 1161, a second axial sealing surface 1171, a third radial sealing surface 1182 and a third axial sealing surface 1181. The first cover body 1100 contacts the first annular wall 2100 through the first radial sealing surface 1162 to form a radial seal, is supported on the first annular wall 2100 and forms an axial seal through the first axial sealing surface 1161, contacts the third annular wall 2300 through the third radial sealing surface 1182 to form a radial seal, is supported on the third annular wall 2300 and forms an axial seal through the third axial sealing surface 1181, and is supported on the second annular wall 2200 and forms an axial seal through the second axial sealing surface 1171. In this way, the fire cover 1000 can be supported on the burner head 2000 and the seal between the fire cover 1000 and the burner head 2000 can be achieved.

[0108] The first radial sealing surface 1162 intersects and is perpendicular to the first axial sealing surface 1161 , the third radial sealing surface 1182 intersects and is perpendicular to the third axial sealing surface 1181 , and the first axial sealing surface 1161 , the second axial sealing surface 1171 and the third axial sealing surface 1181 are arranged on the same plane, which is convenient for processing and has high consistency.

[0109] Furthermore, the first axial sealing surface 1161 is provided between the first radial sealing surface 1162 and the second axial sealing surface 1171, and the third axial sealing surface 1181 is provided between the second axial sealing surface 1171 and the third radial sealing surface 1182. Figure 19 and Figure 20 As shown, the first radial sealing surface 1162 and the third radial sealing surface 1182 extend in the up-down direction, the first axial sealing surface 1161, the second axial sealing surface 1171 and the third axial sealing surface 1181 extend in the horizontal direction, and the first axial sealing surface 1161, the second axial sealing surface 1171 and the third axial sealing surface 1181 are located between the first radial sealing surface 1162 and the third radial sealing surface 1182. During machining, it is only necessary to translate the drill bit to realize the processing of each sealing surface, the processing error of each sealing surface is smaller, and the assembly of the fire cover 1000 and the burner head 2000 is more stable.

[0110] Fire Cover 1000 can also be used as Figures 28 to 49As shown, in some embodiments, the fire cover 1000 includes a first cover body 1100 and a second cover body 1200, wherein the first cover body 1100 and the second cover body 1200 are split components, the first cover body 1100 surrounds the second cover body 1200, the first cover body 1100 and the second cover body 1200 are connected and fixed by connecting means, a first fire outlet seam 1310 is provided between the first cover body 1100 and the second cover body 1200, and the second cover body 1200 is designed as an integrated structure and is provided with a second fire outlet seam 1320.

[0111] Specifically, the fire cover 1000 is a component for gas ejection, and is generally made of high-temperature resistant metal materials. For example, the fire cover 1000 is made of brass, cast iron or stainless steel. It can be understood that the fire cover 1000 needs to be installed on the burner head 2000. The fire cover 1000 and the burner head 2000 together enclose a certain space. The gas enters the space between the fire cover 1000 and the burner head 2000 and then ejects from the fire cover 1000. The gas can be gas, air, or a mixture of gas and air. In this embodiment, gas refers to a mixture of gas and air, the same below.

[0112] The fire cover 1000 has a first fire outlet seam 1310 and a second fire outlet seam 1320. The gas is ejected from the fire cover 1000, specifically from the first fire outlet seam 1310 and the second fire outlet seam 1320. The fire cover 1000 and the burner head 2000 can enclose different spaces, and the different spaces are respectively connected to the first fire outlet seam 1310 and the second fire outlet seam 1320. In this way, the gas enters different spaces respectively and then ejects from the first fire outlet seam 1310 and the second fire outlet seam 1320 accordingly. Alternatively, the same space can be connected to the first fire outlet seam 1310 and the second fire outlet seam 1320.

[0113] The first fire slit 1310 is further away from the center of the fire cover 1000 than the second fire slit 1320. The center of the fire cover 1000 refers to the center of the fire slit range. For example, the fire cover 1000 is applied to a gas stove. In other words, the gas stove includes a burner 100, and the burner 100 includes the fire cover 1000. When the gas stove is installed in a usage environment, the side of the gas stove close to the ground is the bottom, and the side away from the ground is the top. When observing the fire cover 1000 from top to bottom, the first fire slit 1310 is further outward than the second fire slit 1320, and the second fire slit 1320 is further inward than the first fire slit 1310. Furthermore, the first fire slit 1310 is generally annular, and the second fire slit 1320 is generally annular. The first fire slit 1310 surrounds the second fire slit 1320, thereby forming a ring-shaped flame. The first fire slit 1310 and the second fire slit 1320 are formed as follows.

[0114] The fire cover 1000 includes a first cover body 1100 and a second cover body 1200. The first cover body 1100 and the second cover body 1200 are split components. The so-called split components mean that the first cover body 1100 and the second cover body 1200 are manufactured separately and independently of each other, thus constituting two parts. The first cover body 1100 surrounds the second cover body 1200, thereby forming a first fire outlet seam 1310 between the first cover body 1100 and the second cover body 1200. The second cover body 1200 is designed as an integrated structure and is formed with a second fire outlet seam 1320. The so-called integrated structure means that the second cover body 1200 constitutes a single component rather than being assembled from at least two components. The integrated structure can be formed by one-piece molding, or formed by one-piece molding and then machining. The one-piece molding process includes casting molding, forging molding and the like. That is, the second cover body 1200 of the integrated structure is formed with the second fire outlet seam 1320. The second fire outlet seam 1320 can be formed on the second cover body 1200 during the integral molding process, or the second fire outlet seam 1320 can be formed on the fire cover 1000 through machining after the integral molding. In the related art, three parts need to cooperate to form the first fire outlet seam 1310 and the second fire outlet seam 1320. In this embodiment, the first fire outlet seam 1310 and the second fire outlet seam 1320 can be formed by the cooperation of the first cover body 1100 and the second cover body 1200. Compared with the solutions of the related art, on the basis of forming the first fire outlet seam 1310 and the second fire outlet seam 1320, this embodiment can reduce the number of parts (from three to two). Although the first cover body 1100 and the second cover body 1200 still need to cooperate in this embodiment, the second fire outlet seam 1320 can be formed during the manufacturing process of the second cover body 1200 and will not change. Compared with the cooperation between the three parts in the related art, the solution of this embodiment effectively reduces the possibility of poor cooperation. It is understandable that the first cover body 1100 in this embodiment can also be an integrated structure.

[0115] In other embodiments, the fire cover 1000 can be designed as an integrated structure and the first fire outlet seam 1310 and the second fire outlet seam 1320 can be formed simultaneously. However, this places higher requirements on the processing of the fire cover 1000 and the shape structure of the fire cover 1000. In this embodiment, the second cover body 1200 is designed as an integrated structure to form the second fire outlet seam 1320, and then the first cover body 1100 and the second cover body 1200 are matched to form the first fire outlet seam 1310. This ensures that the first fire outlet seam 1310 and the second fire outlet seam 1320 are formed while taking into account the manufacturing difficulty.

[0116] The first cover 1100 and the second cover 1200 are connected and fixed by a connecting means. The connecting means is a method of connecting and fixing two parts together. For example, the connecting means can be screw connection, welding, buckle connection, etc. The connecting means can achieve the connection and fixation between the first cover 1100 and the second cover 1200, so that the relative position between the first cover 1100 and the second cover 1200 is not easy to change, that is, the first fire outlet gap 1310 is not easy to change. It can be understood that when the first cover 1100 and the second cover 1200 are connected and fixed by the connecting means, it is equivalent to the first cover 1100 and the second cover 1200 being combined to form a single part. The first cover 1100 and the second cover 1200 are connected and fixed in the factory. The user only needs to operate once to complete assembly or disassembly. This reduces the number of operations required for the user to assemble and disassemble the fire cover 1000, which is conducive to improving the user experience.

[0117] Combine Figures 29 to 32 as well as Figure 35 、 Figure 36 As shown, in some embodiments, the second cover 1200 includes a second outer cover portion 1210 and a second inner cover portion 1220. Since the second cover 1200 is an integrated structure, the second outer cover portion 1210 and the second inner cover portion 1220 are two corresponding parts of the first cover 1100. In this embodiment, the second outer cover portion 1210 surrounds the second inner cover portion 1220 and there is a certain distance between the second outer cover portion 1210 and the second inner cover portion 1220, so that a second fire outlet gap 1320 is formed between the second outer cover portion 1210 and the second inner cover portion 1220.

[0118] For example, the first cover body 1100 is roughly annular and has a certain height in the up and down directions, the second outer cover part 1210 is roughly annular and has a certain height in the up and down directions, the second inner cover part 1220 is roughly annular and has a certain height in the up and down directions, the first cover body 1100 surrounds the second outer cover part 1210, the first fire outlet seam 1310 is arranged between the first cover body 1100 and the second outer cover part 1210, so as to be roughly annular, and the second fire outlet seam 1320 is arranged between the second outer cover part 1210 and the second inner cover part 1220, so as to be roughly annular.

[0119] In order to ensure the integration of the second outer cover portion 1210 and the second inner cover portion 1220, the second cover body 1200 also includes a second connecting rib 1230. The second connecting rib 1230 is arranged between the second outer cover portion 1210 and the second inner cover portion 1220. The second outer cover portion 1210, the second connecting rib 1230 and the second inner cover portion 1220 form an integrated whole, and the number of the second connecting ribs 1230 is multiple, and multiple means two or more, the same below. Along the direction surrounding the second inner cover portion 1220, the multiple second connecting ribs 1230 are designed to be arranged alternately.

[0120] Specifically, by providing the second connecting rib 1230, the second connecting rib 1230 can achieve support between the second outer cover portion 1210 and the second inner cover portion 1220, thereby forming a second fire outlet gap 1320 between the second outer cover portion 1210 and the second inner cover portion 1220. It can be understood that since the second outer cover portion 1210 surrounds the second inner cover portion 1220, it is necessary to achieve support between the second outer cover portion 1210 and the second inner cover portion 1220 in the direction surrounding the second inner cover portion 1220. For this reason, in this embodiment, there are multiple second connecting ribs 1230, and the multiple second connecting ribs 1230 are alternately arranged along the direction surrounding the second inner cover portion 1220. Each second connecting rib 1230 is integrated with the second outer cover portion 1210 and the second inner cover portion 1220.

[0121] It is understood that the plurality of second connecting ribs 1230 are arranged alternately, thereby forming second vent holes 1240 between adjacent second connecting ribs 1230 to allow gas to pass through. For example, after the second cover 1200 is integrally formed, machining such as grooving or drilling is performed to form the second fire outlet slots 1320 and the second vent holes 1240 (when forming the second vent holes 1240, the portion between adjacent second vent holes 1240 constitutes the second connecting ribs 1230).

[0122] Further, combined with Figure 32As shown, in some embodiments, the second connecting rib 1230 is arranged upstream of the second fire outlet slit 1320, so that the second air vent 1240 is located upstream of the second fire outlet slit 1320, that is, the gas first passes through the second air vent 1240 and then flows into the second fire outlet slit 1320, and finally ejected from the second fire outlet slit 1320 and ignited to form a flame. It can be understood that since the multiple second connecting ribs 1230 are arranged alternately, the multiple second air vents 1240 formed in this way are also arranged alternately. Taking two second air vents 1240 as an example, after the gas passes through the two second air vents 1240, two air flows will be formed. If these two air flows directly leave the second cover body 1200, two flames will be easily formed, which is not conducive to forming a continuous flame in the annular direction, nor is it conducive to the flame transmission along the annular direction. For this reason, in this embodiment, the second connecting rib 1230 is arranged upstream of the second fire outlet slit 1320, so that the second connecting rib 1230 is arranged upstream of the second fire outlet slit 1320. The two air vents 1240 are located upstream of the second fire outlet slit 1320. The gas first passes through the second air vents 1240 and then flows into the second fire outlet slit 1320. Continuing to use the two second air vents 1240 as an example, the gas will form two air flows after passing through the two second air vents 1240. The two air flows are not directly discharged from the second cover body 1200, but enter the second fire outlet slit 1320. The two air flows can be re-converged and mixed in the second fire outlet slit 1320, and finally sprayed out of the second fire outlet slit 1320. In this way, the formation of two flames can be avoided to the greatest extent, and a continuous flame can be formed.

[0123] In some embodiments, the second fire slit 1320 and the second air vent 1240 intersect to form a second corner, the second air vent 1240 constitutes an upstream flow section, and the second fire slit 1320 constitutes a downstream flow section. During the gas ejection process, the gas flows through the second air vent 1240 and the second fire slit 1320 in sequence, and finally ejects from the second fire slit 1320. By setting a second corner between the second fire slit 1320 and the second air vent 1240, the gas needs to pass through the second corner when flowing from the second air vent 1240 to the second fire slit 1320, that is, the gas needs to turn when flowing from the second air vent 1240 to the second fire slit 1320, which is conducive to further mixing of the gas and deceleration, thereby improving the uniformity and stability of the gas ejection.

[0124] In some embodiments, the connection method is screw connection, that is, the first cover 1100 and the second cover 1200 are fixed to each other by screw connection. In other words, the first cover 1100 is provided with corresponding holes for screw connection, the second cover 1200 is provided with corresponding holes for screw connection, and the fire cover 1000 includes screws, and the screws pass through the corresponding holes to achieve the connection and fixation between the first cover 1100 and the second cover 1200.

[0125] Combine Figure 1As shown, the screws are used to move upward from the bottom side of the fire cover 1000 to achieve a connection and fixation between the first cover body 1100 and the second cover body 1200. Since the fire cover 1000 is installed on the burner head 2000, by driving the screws in this way, the screws can be hidden after the fire cover 1000 is installed on the burner head 2000, avoiding exposure. For example, during the screwing process, the screws move upward from the bottom side of the fire cover 1000, and the screws sequentially pass through the holes of the second cover body 1200 and are connected and fastened to the holes of the first cover body 1100. The holes of the first cover body 1100 are blind holes.

[0126] Combine Figure 39 、 Figure 40 、 Figures 43 to 47 As shown, in some embodiments, the first cover 1100 and the second cover 1200 are matched in the following manner: the first cover 1100 is provided with a first mating surface 1190, and the second cover 1200 is provided with a second mating surface 1290. When the first cover 1100 and the second cover 1200 are connected and fixed, the first mating surface 1190 and the second mating surface 1290 abut against each other. In this embodiment, the first mating surface 1190 and the second mating surface 1290 abut against each other along the axial direction of the screw connection. In this way, the first mating surface 1190 can generate a substantially perpendicular force on the second mating surface 1290, and the second mating surface 1290 can also generate a substantially perpendicular force on the first mating surface 1190, effectively achieving a seal between the first mating surface 1190 and the second mating surface 1290, and preventing gas entering the first fire outlet gap 1310 from leaking between the first mating surface 1190 and the second mating surface 1290.

[0127] For example, a first fire outlet gap 1310 is formed between the top of the first cover body 1100 and the second cover body 1200, and a first mating surface 1190 is formed on the bottom surface of the first cover body 1100. The first mating surface 1190 and the second mating surface 1290 are abutted together in the up and down directions. The first cover body 1100 is provided with a first fastening hole 1510, and the second cover body is provided with a second fastening hole 1520. The first cover body 1100 and the second cover body 1200 are screwed in a bottom-up direction (the axial direction of the screw connection is the axial direction of the screw, and the axial direction of the screw here is the up and down direction). The screws pass through the first fastening hole 1510 and the second fastening hole 1520 and are tightened. During the process of tightening the screws, the first mating surface 1190 and the second mating surface 1290 are abutted against each other to be sealed, and the gas entering the first fire outlet gap 1310 is ejected from the first fire outlet gap 1310. To allow gas to enter the first fire outlet slit 1310, a second connecting hole 1250 is provided in the second cover 1200 (e.g., in the second outer cover 1210). The second connecting hole 1250 communicates with the first fire outlet slit 1310, allowing gas to enter the first fire outlet slit 1310 through the second connecting hole 1250. The figure shows an embodiment in which the first fire outlet slit 1310 and the second fire outlet slit 1320 face outward. In other embodiments, they can also face inward (i.e., toward the center and above of the burner 100).

[0128] Further, combined with Figure 40 As shown, the second cover 1200 is used to cover the first cavity 1241 and the second cavity 1242 of the burner 2000 , the second communicating hole 1250 is in communication with the first cavity 1241 , and the second fire outlet slot 1320 is in communication with the second cavity 1242 .

[0129] Specifically, the fire cover 1000 needs to be assembled on the burner head 2000. The burner head 2000 has a first cavity 1241 and a second cavity 1242. The first fire outlet gap 1310 is connected to the first cavity 1241, and the second fire outlet gap 1320 is connected to the second cavity 1242. The gas entering the first cavity 1241 is ejected through the first fire outlet gap 1310, and the gas entering the second cavity 1242 is ejected through the second fire outlet gap 1320. In this embodiment, the second cover body 1200 covers the first cavity 1241 and the second cavity 1242, that is, the second cover body 1200 is supported on the burner head 2000 and can form a seal with the first cavity 1241 and the second cavity 1242 to prevent gas leakage from between the fire cover 1000 and the burner head 2000. In other words, the sealing surfaces that cover the first cavity 1241 and the second cavity 1242 are both arranged on the second cover body 1200, thereby reducing the difficulty of precise matching of the fire cover 1000 and the burner head 2000.

[0130] For example, combined with Figure 40 and Figure 50As shown, the burner head 2000 includes a first ring wall 2100, a second ring wall 2200 and a third ring wall 2300. The first ring wall 2100 surrounds the second ring wall 2200, and the second ring wall 2200 surrounds the third ring wall 2300. A first cavity 1241 is provided between the first ring wall 2100 and the second ring wall 2200, and a second cavity 1242 is provided between the second ring wall 2200 and the third ring wall 2300. When the fire cover 1000 is assembled to the burner head 2000, the second cover body 1200 needs to cooperate with the first ring wall 2100, the second ring wall 2200 and the third ring wall 2300 so as to be supported on the first ring wall 2100, the second ring wall 2200 and the third ring wall 2300, and realize the enclosed first cavity 1241 and the second cavity 1242. The second cover body 1200 needs to form a seal with the first annular wall 2100, and the second cover body 1200 also needs to form a seal with the second annular wall 2200. The second cover body 1200 also needs to form a seal with the third annular wall 2300. The second connecting hole 1250 is connected with the first cavity 1241, so that the gas entering the first cavity 1241 passes through the second connecting hole 1250 and enters the first fire outlet gap 1310, and is finally ejected from the first fire outlet gap 1310. The gas entering the second cavity 1242 is ejected through the second fire outlet gap 1320.

[0131] The sealing between the second cover 1200 and the furnace head 2000 is achieved by setting a sealing surface. Figure 33 、 Figure 34 、 Figure 45 and Figure 46 As shown, the second cover body 1200 is provided with a fourth radial sealing surface 1262, a fourth axial sealing surface 1261, a fifth axial sealing surface 1271, a sixth radial sealing surface 1282 and a sixth axial sealing surface 1281. The second cover body 1200 contacts the first annular wall 2100 through the fourth radial sealing surface 1262 to form a radial seal, is supported on the first annular wall 2100 and forms an axial seal through the fourth axial sealing surface 1261, contacts the third annular wall 2300 through the sixth radial sealing surface 1282 to form a radial seal, is supported on the third annular wall 2300 and forms an axial seal through the sixth axial sealing surface 1281, and is supported on the second annular wall 2200 and forms an axial seal through the fifth axial sealing surface 1271. In this way, the fire cover 1000 can be supported on the burner head 2000 and the seal between the fire cover 1000 and the burner head 2000 can be achieved.

[0132] The fourth radial sealing surface 1262 intersects and is perpendicular to the fourth axial sealing surface 1261 , the sixth radial sealing surface 1282 intersects and is perpendicular to the sixth axial sealing surface 1281 , and the fourth axial sealing surface 1261 , the fifth axial sealing surface 1271 and the sixth axial sealing surface 1281 are arranged on the same plane, which is convenient for processing and has high consistency.

[0133] Furthermore, the fourth axial sealing surface 1261 is provided between the fourth radial sealing surface 1262 and the fifth axial sealing surface 1271, and the sixth axial sealing surface 1281 is provided between the fifth axial sealing surface 1271 and the sixth radial sealing surface 1282. Figure 48 and Figure 49 As shown, the fourth radial sealing surface 1262 and the sixth radial sealing surface 1282 extend in the up-down direction, the fourth axial sealing surface 1261, the fifth axial sealing surface 1271 and the sixth axial sealing surface 1281 extend in the horizontal direction, and the fourth axial sealing surface 1261, the fifth axial sealing surface 1271 and the sixth axial sealing surface 1281 are located between the fourth radial sealing surface 1262 and the sixth radial sealing surface 1282. During machining, it is only necessary to translate the drill bit to realize the processing of each sealing surface, the processing error of each sealing surface is smaller, and the assembly of the fire cover 1000 and the burner head 2000 is more stable.

[0134] In some embodiments, the first fire outlet slit 1310 is used to supply gas and induced air for ejection, and the second fire outlet slit 1320 is used to supply gas and blast air for ejection, which will be described below in conjunction with a gas stove.

[0135] The first fire outlet slit 1310 is used for the gas and induced air to be ejected. The gas and induced air enter the interior of the burner 100 and are finally ejected from the interior of the burner 100 through the first fire outlet slit 1310 and ignited to form a flame. Specifically, the burner is provided with a first ejector tube 3100, which is connected to the first cavity 1241. The gas can be supplied from bottled liquefied gas or pipeline natural gas. The gas stove includes a valve body. After the valve body is opened, the gas is transmitted along the gas pipeline. The gas flows through the valve body and is ejected through a nozzle. The nozzle is aimed at the first ejector tube 3100. In the process of the gas being ejected into the first ejector tube 3100, a negative pressure is formed on the surrounding environment, so that the air of the surrounding environment is synchronously ejected into the first ejector tube 3100 along with the ejection of the gas (this part of the air entering the first ejector tube 3100 through the ejection action is called ejected air, and the ejected air is primary air). Finally, the gas and the ejected air enter the first cavity 1241, and are finally ejected from the first fire outlet gap 1310, and are then ignited to form a flame.

[0136] The second flame outlet slit 1320 is used to eject gas and blast air. The gas and blast air enter the interior of the burner 100 and are ultimately ejected from the interior of the burner 100 through the second flame outlet slit 1320, ignited, and form a flame. Specifically, the burner head is provided with a second ejector pipe 3200, which is connected to the second chamber 1242. The gas supply can be from bottled liquefied gas or pipeline natural gas. The gas stove includes a valve body. When the valve body is opened, the gas is transmitted along the gas pipeline, flows through the valve body, and is ejected through a nozzle. The nozzle is aligned with the second ejector pipe 3200. As the gas is ejected into the second ejector pipe 3200, blast air is simultaneously provided. The blast air is generated by a fluid mechanism, such as forced air from a blower. The blast air enters the second ejector pipe 3200, connects with the gas, and enters the second chamber 1242 (the blast air is primary air), and is ultimately ejected from the second flame outlet slit 1320. Compared with the induced air, the blast air can provide more oxygen, so that the gas ejected from the second fire outlet slit 1320 can be in an oxygen-rich combustion state, thereby ensuring that the gas ejected from the second fire outlet slit 1320 is fully burned.

[0137] When the induced air ejected from the first fire slit 1310 is insufficient to support the combustion of the gas ejected from the first fire slit 1310, secondary air supplement is required. Since the second fire slit 1320 ejects blast air, the blast air ejected from the second fire slit 1320 can provide enough oxygen, so that the blast air ejected from the second fire slit 1320 not only participates in the combustion of the gas ejected from the second fire slit 1320, but also provides excess oxygen to supplement the gas ejected from the first fire slit 1310, thereby assisting the first fire slit 1310 to burn the gas. The combustion of the ejected gas, compared with relying on the suction effect to supplement secondary air from the surrounding environment, the excess oxygen provided by the blast air ejected from the second fire gap 1320 is more actively supplemented to the gas ejected from the first fire gap 1310. Through such a setting, the gas ejected from the first fire gap 1310 is fully burned (in this case, the flame generated by the first fire gap 1310 can still suck in secondary air from the surrounding environment to participate in the combustion), and finally the gas ejected from the first fire gap 1310 and the second fire gap 1320 is fully burned.

[0138] It is understandable that in other embodiments, the first fire outlet slit 1310 can be used to supply gas and blast air for ejection, and the second fire outlet slit 1320 can be used to supply gas and induced air for ejection. The principle can be found in the scheme where the first fire outlet slit 1310 supplies gas and induced air for ejection and the second fire outlet slit 1320 supplies gas and blast air for ejection, and no further details will be given.

[0139] The second aspect of the present application discloses a burner 100, Figures 1 to 10As shown, the burner 100 includes a burner head 2000 and the aforementioned fire cover 1000, which is disposed on the burner head 2000. In this embodiment, the fire cover 1000 constitutes an outer ring fire cover 1000. The burner 100 also includes an inner ring fire cover 4000. The outer ring fire cover 1000 surrounds the inner ring fire cover 4000, and the inner ring fire cover 4000 is provided with inner ring fire holes for forming an inner ring flame. It is understood that the fire cover 1000 of the burner 100 of this embodiment adopts the technical solutions of the above-mentioned embodiments, and therefore has at least the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0140] The third aspect of the present application discloses a gas stove, which includes the above-mentioned burner 100. It can be understood that the burner 100 of the gas stove of this embodiment adopts the technical solution of the above-mentioned embodiment, and therefore has at least the beneficial effects brought by the technical solution of the above-mentioned embodiment, which will not be repeated here.

[0141] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. A fire cover (1000), characterized in that: The invention comprises a first cover body (1100) and a second cover body (1200), wherein the first cover body (1100) surrounds the second cover body (1200), the first cover body (1100) and the second cover body (1200) are split components and are suitable for being connected and fixed by connecting means, the first cover body (1100) is an integrated structure and is provided with a first fire outlet seam (1310), and a second fire outlet seam (1320) is provided between the first cover body (1100) and the second cover body (1200).

2. The fire cover (1000) according to claim 1, characterized in that: The first cover body (1100) includes a first outer cover part (1110), a first inner cover part (1120) and a first connecting rib (1130), the first outer cover part (1110) surrounds the first inner cover part (1120), the first fire outlet seam (1310) is arranged between the first outer cover part (1110) and the first inner cover part (1120), the first connecting rib (1130) is arranged between the first outer cover part (1110) and the first inner cover part (1120), and the first connecting rib (1130), the first outer cover part (1110) and the first inner cover part (1120) are integrated, and the number of the first connecting ribs (1130) is multiple, and the multiple first connecting ribs (1130) are arranged alternately along the direction surrounding the first inner cover part (1120).

3. The fire cover (1000) according to claim 2, characterized in that: A first ventilation hole (1140) is provided between adjacent first connecting ribs (1130), and the first ventilation hole (1140) is communicated with the first fire outlet slit (1310) and is provided upstream of the first fire outlet slit (1310).

4. The fire cover (1000) according to claim 1, characterized in that: The connection means is a screw connection, and the fire cover (1000) includes screws, and the screws are suitable for moving upward from the lower side of the fire cover (1000) to connect and fix the first cover body (1100) and the second cover body (1200).

5. The fire cover (1000) according to claim 1, characterized in that: The connection means is a screw connection, the first cover body (1100) is provided with a first mating surface (1190), the second cover body (1200) is provided with a second mating surface (1290), the first mating surface (1190) and the second mating surface (1290) are suitable for abutting along the axial direction of the screw connection, the first cover body (1100) is provided with a first connecting hole (1150), the first connecting hole (1150) and the second fire outlet seam (1320) are connected, and the gas is suitable for passing through the first connecting hole (1150) and entering the second fire outlet seam (1320).

6. The fire cover (1000) according to claim 1, characterized in that The first cover body (1100) is provided with a first connecting hole (1150), the first connecting hole (1150) is connected to the second fire outlet seam (1320), and gas is suitable for passing through the first connecting hole (1150) and entering the second fire outlet seam (1320). The first cover body (1100) is suitable for covering the first cavity (1241) and the second cavity (1242) of the burner head (2000), the first fire outlet seam (1310) is suitable for communicating with the first cavity (1241) of the burner head (2000), and the first connecting hole (1150) is suitable for communicating with the second cavity (1242) of the burner head (2000).

7. The fire cover (1000) according to claim 6, characterized in that The first cover (1100) is provided with a first axial sealing surface (1161), a first radial sealing surface (1162), a second axial sealing surface (1171), a third axial sealing surface (1181) and a third radial sealing surface (1182), wherein the first axial sealing surface (1161) is suitable for axially sealing with the first annular wall (2100) of the furnace head (2000), the first radial sealing surface (1162) is suitable for radially sealing with the first annular wall (2100) of the furnace head (2000), the second axial sealing surface (1171) is suitable for axially sealing with the second annular wall (2200) of the furnace head (2000), and the third axial sealing surface (1181) is suitable for axially sealing with the second annular wall (2200) of the furnace head (2000). ) is suitable for axial sealing with the third annular wall (2300) of the furnace head (2000), the third radial sealing surface (1182) is suitable for radial sealing with the third annular wall (2300) of the furnace head (2000), the first annular wall (2100) of the furnace head (2000) surrounds the second annular wall (2200), the second annular wall (2200) of the furnace head (2000) surrounds the third annular wall (2300), the first cavity (1241) of the furnace head (2000) is arranged between the first annular wall (2100) and the second annular wall (2200), and the second cavity (1242) of the furnace head (2000) is arranged between the second annular wall (2200) and the third annular wall (2300).

8. The fire cover (1000) according to claim 7, characterized in that The first axial sealing surface (1161) and the first radial sealing surface (1162) intersect and are perpendicular to each other, the third axial sealing surface (1181) and the third radial sealing surface (1182) intersect and are perpendicular to each other, and the first axial sealing surface (1161), the second axial sealing surface (1171) and the third axial sealing surface (1181) are arranged on the same plane; And / or, the first axial sealing surface (1161) is located between the first radial sealing surface (1162) and the second axial sealing surface (1171), and the third axial sealing surface (1181) is located between the second axial sealing surface (1171) and the third radial sealing surface (1182).

9. The fire cover (1000) according to claim 1, characterized in that One of the first fire outlet slit (1310) and the second fire outlet slit (1320) is suitable for ejecting induced air and gas, and the other of the first fire outlet slit (1310) and the second fire outlet slit (1320) is suitable for ejecting blast air and gas.

10. A fire cover (1000), characterized in that: The invention comprises a first cover body (1100) and a second cover body (1200), wherein the first cover body (1100) surrounds the second cover body (1200), the first cover body (1100) and the second cover body (1200) are split components and are suitable for being connected and fixed by connecting means, a first fire outlet seam (1310) is provided between the first cover body (1100) and the second cover body (1200), and the second cover body (1200) is an integrated structure and is provided with a second fire outlet seam (1320).

11. The fire cover (1000) according to claim 10, characterized in that The second cover body (1200) includes a second outer cover part (1210), a second inner cover part (1220) and a second connecting rib (1230), the second outer cover part (1210) surrounds the second inner cover part (1220), the second fire outlet seam (1320) is arranged between the second outer cover part (1210) and the second inner cover part (1220), the second connecting rib (1230) is arranged between the second outer cover part (1210) and the second inner cover part (1220), and the second connecting rib (1230), the second outer cover part (1210) and the second inner cover part (1220) are integrated, and the number of the second connecting ribs (1230) is multiple, and the multiple second connecting ribs (1230) are arranged alternately along the direction surrounding the second inner cover part (1220).

12. The fire cover (1000) according to claim 11, characterized in that A second ventilation hole (1240) is provided between adjacent second connecting ribs (1230), and the second ventilation hole (1240) is communicated with the second fire outlet slot (1320) and is provided upstream of the second fire outlet slot (1320).

13. The fire cover (1000) according to claim 10, characterized in that The connection means is a screw connection, and the fire cover (1000) includes screws, and the screws are suitable for moving upward from the lower side of the fire cover (1000) to connect and fix the first cover body (1100) and the second cover body (1200).

14. The fire cover (1000) according to claim 10, characterized in that The connection means is a screw connection, the first cover body (1100) is provided with a first mating surface (1190), the second cover body (1200) is provided with a second mating surface (1290), the first mating surface (1190) and the second mating surface (1290) are suitable for abutting along the axial direction of the screw connection, the second cover body (1200) is provided with a second connecting hole (1250), the second connecting hole (1250) is connected to the first fire outlet seam (1310), and the gas is suitable for passing through the second connecting hole (1250) and entering the first fire outlet seam (1310).

15. The fire cover (1000) according to claim 10, characterized in that The second cover body (1200) is provided with a second communicating hole (1250), and the second communicating hole (1250) is connected to the first fire outlet seam (1310), and gas is suitable for passing through the second communicating hole (1250) and entering the first fire outlet seam (1310). The second cover body (1200) is suitable for covering the first cavity (1241) and the second cavity (1242) of the burner head (2000), and the second communicating hole (1250) is suitable for communicating with the first cavity (1241) of the burner head (2000), and the second fire outlet seam (1320) is suitable for communicating with the second cavity (1242) of the burner head (2000).

16. The fire cover (1000) according to claim 15, characterized in that The second cover (1200) is provided with a fourth axial sealing surface (1261), a fourth radial sealing surface (1262), a fifth axial sealing surface (1271), a sixth axial sealing surface (1281) and a sixth radial sealing surface (1282), wherein the fourth axial sealing surface (1261) is suitable for axially sealing with the first annular wall (2100) of the furnace head (2000), the fourth radial sealing surface (1262) is suitable for radially sealing with the first annular wall (2100) of the furnace head (2000), the fifth axial sealing surface (1271) is suitable for axially sealing with the second annular wall (2200) of the furnace head (2000), and the sixth axial sealing surface (1281) is suitable for axially sealing with the second annular wall (2200) of the furnace head (2000). ) is suitable for axial sealing with the third annular wall (2300) of the furnace head (2000), the sixth radial sealing surface (1282) is suitable for radial sealing with the third annular wall (2300) of the furnace head (2000), the first annular wall (2100) of the furnace head (2000) surrounds the second annular wall (2200), the second annular wall (2200) of the furnace head (2000) surrounds the third annular wall (2300), the first cavity (1241) of the furnace head (2000) is arranged between the first annular wall (2100) and the second annular wall (2200), and the second cavity (1242) of the furnace head (2000) is arranged between the second annular wall (2200) and the third annular wall (2300).

17. The fire cover (1000) according to claim 16, characterized in that The fourth axial sealing surface (1261) and the fourth radial sealing surface (1262) intersect and are perpendicular to each other, the sixth axial sealing surface (1281) and the sixth radial sealing surface (1282) intersect and are perpendicular to each other, and the fourth axial sealing surface (1261), the fifth axial sealing surface (1271) and the sixth axial sealing surface (1281) are arranged in the same plane; And / or, the fourth axial sealing surface (1261) is located between the fourth radial sealing surface (1262) and the fifth axial sealing surface (1271), and the sixth axial sealing surface (1281) is located between the fifth axial sealing surface (1271) and the sixth radial sealing surface (1282).

18. The fire cover (1000) according to claim 10, characterized in that One of the first fire outlet slit (1310) and the second fire outlet slit (1320) is suitable for ejecting induced air and gas, and the other of the first fire outlet slit (1310) and the second fire outlet slit (1320) is suitable for ejecting blast air and gas.

19. A burner (100), characterized in that: The invention comprises a burner head (2000) and a fire cover (1000) according to any one of claims 1 to 18 and arranged on the burner head (2000).

20. A gas stove, characterized in that: Comprising the burner (100) according to claim 19.

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