WO2020173204A1 - Inner burner cap, burner cap assembly, burner, and gas stove - Google Patents

Abstract

A burner cap assembly, comprising an outer burner cap (3), an inner burner cap (4), and a gas distribution disk (5). An inner burner cap mounting part (3-1) is provided in the middle of the outer burner cap (3). The inner burner cap (4) is provided on the inner burner cap mounting part (3-1). An inner ring flame gas inlet channel (6) is provided at the center of the inner burner cap mounting part (3-1). A flame hole surface (3-2) is provided on the periphery of the outer burner cap (3). A connection surface (3-3) is provided between the flame hole surface (3-2) and the inner burner cap mounting part (3-1). The outer burner cap (3) is coaxially coupled above the gas distribution disk (5). An outer ring flame gas inlet channel (7) is provided at the center of the gas distribution disk (5). An outer burner cap gas distribution bin (8) is formed below the flame hole surface (3-2) and between the outer burner cap (3) and the gas distribution disk (5). A plurality of secondary air inlet channels (9) communicating the connection surface (3-3) with the gas distribution disk (5) is further evenly distributed on the connection surface (3-3). By providing the outer ring flame gas inlet channel (7) at the center of the gas distribution disk, gas can be evenly spread to the outer burner cap gas distribution bin (8). The inner burner cap (4) comprises a tubular body (4-1) which is top-opened and a mesh (4-2) having a plurality of flame holes. The mesh (4-2) is mounted in the top opening, and extends inward from the top wall of the body to form a projecting edge (4-1-1). The top surface edge of the mesh (4-2) abuts against the bottom surface of the projecting edge (4-1-1).

Description

Inner fire cover, fire cover assembly, burner and gas stove Technical field

The embodiment of the present invention relates to the field of kitchen appliances, in particular to an inner fire cover, a fire cover assembly, a burner and a gas stove.

Background technique

Most of the burner structures currently on the market are shown in Figure 1. The burner includes a burner 1 and a fire cover assembly 2. The structure of the fire cover assembly is shown in Figure 2. The fire cover assembly includes an inner fire cover 2-1. Outer fire cover 2-2, air distribution plate 2-3, air inlet 2-4, manifold 2-5, bracket 2-6, of which the outer ring air inlet 2-4 is in the air distribution plate On the side of 2-3, in order to prevent most of the gas from directly rushing out from the fire hole above the air inlet 2-4, a perforated splitter plate 2-5 is set above the air inlet 2-4 to guide the gas circumference. To flow. However, the fire cover assembly of this structure has the following shortcomings: 1. The outer ring air inlet 2-4 is on the side of the gas distribution plate 2-3, and the gas cannot be evenly distributed on the fire hole to burn; 2. Each fire cover assembly 2 The parts are complicated to assemble. The air inlet 2-4, the manifold 2-5, and the bracket 2-6 should be respectively assembled on the gas distributor 2-3; 3. The fire cover assembly 2 and the burner 1 are not easy to locate, when the inner and outer rings enter When the assembly tolerance of the air hole is small, the fire cover assembly 2 is not easy to install. When the assembly tolerance of the inner and outer ring air inlet holes is increased, the assembly of the fire cover assembly 2 is unstable.

Summary of the invention

The purpose of the embodiments of the present invention is to provide an inner fire cover, a fire cover assembly, a burner and a gas stove, so that the outer ring fire gas can be evenly distributed to the fire holes for full combustion, and the energy efficiency of gas combustion is improved.

In order to solve the above technical problems, the embodiment of the present invention provides an inner fire cover, which includes a tubular body with a top opening and a mesh with a plurality of fire holes. The mesh is installed in the top opening, and the top wall of the body faces inward. It extends to form a convex edge, and the top surface edge of the mesh is against the bottom surface of the convex edge.

The embodiment of the present invention also provides a fire cover assembly, which includes an outer fire cover, a gas distribution plate and the inner fire cover as described above; an inner fire cover installation part is provided in the middle of the outer fire cover, and the inner fire cover Installed on the inner fire cover installation part, the center of the inner fire cover installation part is provided with an inner ring fire inlet channel; the outer fire cover is provided with a fire hole surface; the connection surface between the fire hole surface and the inner fire cover installation part is divided; The center of the gas plate has an outer ring fire inlet channel; the outer flame cover is concentrically assembled above the gas distribution plate, so that the outer flame cover gas distribution bin is formed between the outer flame cover and the gas distribution plate under the fire hole surface; and There are also a number of secondary air intake channels that penetrate the connecting surface and the air distribution plate evenly distributed on the surface.

The embodiment of the present invention also provides a burner, including a furnace head assembly and the above-mentioned fire cover assembly, the furnace head assembly includes an inner ring fire air supply channel, and an outer ring fire air supply channel surrounding the outer ring fire air supply channel , The inner ring ejector pipe connected with the inner ring fire air supply channel and the outer ring ejector pipe connected with the outer ring fire air delivery channel, the inner ring fire air delivery channel communicates with the inner ring fire air inlet channel, and the outer ring fire air delivery channel The ring fire air inlet channel is connected.

The embodiment of the present invention also provides a gas stove, including the burner as described above.

Compared with the prior art, the embodiment of the present invention is provided with an outer ring fire inlet passage in the center of the gas distribution plate, so that the gas in the outer ring fire inlet passage can be evenly diffused to the outer fire cover gas distribution bin, and then evenly distributed to Each fire hole is fully burned, thereby improving the energy efficiency of gas combustion.

In addition, the concentric assembly includes a first flange provided on the air distribution plate and a second flange provided on the connecting surface, which extends upward around the through point on the air distribution plate to form a first flange; surrounds the through point of the connecting surface A second flange extending downward is formed, and the first flange is connected with the second flange to form a secondary air intake passage.

In addition, the top wall of the first flange abuts the top wall of the second flange, or

The inner side wall of the first flanging abuts against the outer side wall of the second flanging; or

The outer side wall of the first flanging abuts against the inner side wall of the second flanging.

In addition, the concentric assembly includes a tube body, and opposite ends of the tube body respectively penetrate the connecting surface and the air distribution plate to form the secondary air intake passage.

In addition, a circle of skirts are provided along the circumference of the outer wall of the opposite ends of the tube body. The bottom wall of one skirt resists the top wall of the outer flame cover, and the top wall of the other skirt resists the bottom wall of the gas distribution plate. .

In addition, a plurality of bendable lugs are arranged at intervals at the end of the tube body, and the lugs are used to fit and fixedly connect with the connecting surface of the outer fire cover when the lugs are bent.

In addition, the concentric assembly also includes a first outer convex ring extending downwards along the outer peripheral wall of the outer fire cover, a second outer convex ring extending upwards along the outer peripheral wall of the gas distribution plate, the first outer convex ring and the second outer convex ring The ring fits and fixes the connection.

In addition, the mounting part of the inner fire cover is a boss formed by the middle part of the outer fire cover protruding upward, and an exit is opened on the top wall of the boss,

In addition, an inner ring fire air inlet passage is extended downward along the peripheral wall of the outlet, or the inner ring fire air inlet passage is connected with the boss in a split type, and the inner ring fire air inlet passage is installed at the outlet.

In addition, a through hole is opened in the middle of the air distribution plate, and a third flange is formed along the hole wall of the through hole. The space surrounded by the third flange serves as the outer ring fire air inlet channel, and the outer ring fire air inlet channel surrounds the inner ring The outside of the fire intake channel.

In addition, the body is sleeved on the outer wall of the boss.

In addition, the fire hole surface has a number of strip fire holes, which are arranged equidistantly from the center of the outer fire cover, and are radially around the center of the outer fire cover. One of the two adjacent strip fire holes The distance between them is equal.

In addition, the height of the plane where the outlet of the secondary air intake passage is relative to the horizontal plane is less than the height of the plane where the mesh fire hole is located and the height of the plane where the strip fire hole is relative to the horizontal plane; the height of the plane where the mesh fire hole is relative to the horizontal plane is not less than the height of the horizontal plane. The height of the plane where the fire hole is located relative to the horizontal plane.

In addition, the inner fire cover includes a clip strip that fixes the mesh in the top opening and extends inwardly on the top wall of the main body to form a convex edge. The inner wall of the body is provided with a groove, and the clip strip is clamped in the recess. In the groove, and the clip fixes the mesh between the groove and the convex edge.

In addition, the clamping strip is formed by bending an elastic wire, and includes at least three clamping portions and connecting portions located between the clamping portions, and the clamping portion has at least three points to be clamped in the groove.

In addition, the at least three clamping parts include three clamping contacts, and the connecting lines of the three clamping contacts form an acute triangle.

In addition, the clip strip has an opening, the ends of two adjacent clip portions are free ends, and the free ends are bent toward the inside to form a resisting portion, which can resist against the bottom wall of the mesh.

Description of the drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings. These exemplified descriptions do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the attached drawings do not constitute a limitation of scale.

Figure 1 is a cross-sectional view of a burner in the prior art;

Figure 2 is an exploded view of the fire cover assembly in the prior art;

3 is a schematic diagram of the structure of the fire cover assembly in the first embodiment of the present invention;

4 is a cross-sectional view of the fire cover assembly in the first embodiment of the present invention;

Figure 5 is an exploded view of the fire cover assembly in the second embodiment of the present invention;

6 is a cross-sectional view of the fire cover assembly in the second embodiment of the present invention;

7 is a cross-sectional view of the fire cover assembly in the third embodiment of the present invention;

Fig. 8 is a perspective view of the clip in the fourth embodiment of the present invention;

9 is a cross-sectional view of the fire cover assembly of the fourth embodiment of the present invention;

10 is a cross-sectional view of the inner fire cover of the fourth embodiment of the present invention;

Figure 11 is an exploded view of the inner fire cover in the fifth embodiment of the present invention;

Figure 12 is a bottom view of the inner fire cover in the fifth embodiment of the present invention;

13 is a schematic diagram of the structure of the burner in the sixth embodiment of the present invention;

Fig. 14 is a cross-sectional view of a combustor in a sixth embodiment of the present invention.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, a person of ordinary skill in the art can understand that, in each embodiment of the present invention, many technical details are proposed for the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solution claimed in this application can be realized.

The first embodiment of the present invention relates to a fire cover assembly, as shown in Figures 3 to 4, the fire cover assembly includes an outer fire cover 3, an inner fire cover 4, and a gas distribution plate 5; The fire cover mounting part 3-1, the inner fire cover 4 are arranged on the inner fire cover mounting part 3-1, the inner fire cover mounting part 3-1 is provided with an inner ring fire inlet channel 6 in the center; the outer fire cover 3 is provided with The fire hole surface 3-2; the connecting surface 3-3 between the fire hole surface 3-2 and the inner fire cover mounting part 3-1; the center of the gas distribution plate 5 has an outer ring fire inlet channel 7; the outer fire cover 3 is concentric Assembled above the gas distribution plate 5, so that under the fire hole surface 3-2, an outer flame cover gas distribution bin 8 is formed between the outer flame cover 3 and the gas distribution plate 5; and is evenly distributed on the connecting surface 3-3 There are a number of secondary air intake passages 9 passing through the connecting surface 3-3 and the air distribution plate 5.

It should be noted that in this embodiment, there can be six secondary air intake passages 9 and the six secondary air intake passages 9 are evenly distributed on the connecting surface 3-3. As for this embodiment, the connecting surface A number of holes can be opened on 3-3, and a number of holes can be opened on the air distribution plate 5. The holes on the connecting surface 3-3 correspond to the size and position of the holes on the air distribution plate 5. The secondary air inlet channel 9 is The hole on the connecting surface 3-3 penetrates to the hole on the gas distribution plate 5. Since several holes on the connecting surface 3-3 are located between the outer fire cover 3 and the inner fire cover 4, the air flowing out from the secondary air intake passage 9 can be uniformly and simultaneously performed on the outer fire cover 3 and the inner fire cover 4 The supplement of the secondary air further improves the efficiency of gas combustion in the outer fire cover 3 and the inner fire cover 4.

Preferably, the concentric assembly includes a first flange 5-1 arranged on the gas distribution plate 5 and a second flange 3-3-1 arranged on the connecting surface 3-3, surrounding the through-point on the gas distribution plate 5 (That is, the hole on the air distribution plate 5) extends upward to form a first flange 5-1; surrounds the through part of the connecting surface 3-3 (that is, the hole on the connecting surface 3-3) extends downward to form a second flange 3-3-1, the first flange 5-1 and the second flange 3-3-1 are connected to form the secondary air intake passage 9. Specifically, the first flange 5-1 and the air distribution plate 5 may be integrated Forming, the second flange 3-3-1 and the connecting surface 3-3 can be integrally formed. It should be noted that the first flange 5-1 and the air distribution plate 5 can also be connected separately, and the second flange 3 -3-1 and the connecting surface 3-3 can also be connected separately, and the embodiment of the present invention is not limited here.

Further, the inner side wall of the first flange 5-1 and the outer side wall of the second flange 3-3-1 may abut, it should be noted that the inner side wall of the first flange 5-1 and the second flange The outer side wall of 3-3-1 can also be expanded and crimped or directly welded. In the embodiment of the present invention, the inner side wall of the first flange 5-1 and the outer side wall of the second flange 3-3-1 The connection mode is not limited, and those skilled in the art can flexibly choose according to needs. In addition, the top wall of the first flange 5-1 and the top wall of the second flange 3-3-1 may abut, or the outer side wall of the first flange 5-1 and the second flange 3-3-1 The inner wall abuts, it can be seen that no matter which connection method the first flange 5-1 and the second flange 3-3-1 adopt, as long as the first flange 5-1 and the second flange 3- can be realized. The connection of 3-1 is within the protection scope of the present invention.

As a preferred embodiment, the concentric assembly further includes a first outer convex ring 3-4 extending downwards along the outer peripheral wall of the outer fire cover 3, and a second outer convex ring 5 extending upwards along the outer peripheral wall of the gas distributor plate 5. -2, the first outer convex ring 3-4 is fixedly connected with the second outer convex ring 5-2, the outer fire cover 3 can be buckled on the gas distribution plate 5, specifically, the inner wall of the first outer convex ring 3-4 It has an inclined surface, the outer wall of the second outer convex ring 5-2 has an inclined surface, and the inner wall of the first outer convex ring 3-4 and the outer wall of the second outer convex ring 5-2 are mated and connected by the inclined surfaces of each other. Yes, the inner wall of the first outer convex ring 3-4 and the outer wall of the second outer convex ring 5-2 can be mated and connected by riveting.

Referring to Fig. 4, the inner fire cover installation part 3-1 can be a boss formed by the middle part of the outer fire cover 3 protruding upwards. An exit 3-1-1 is opened on the top wall of the boss, along the exit 3-1-1. The peripheral wall extends downwards to form a tubular inner ring fire air inlet channel 6. The inner ring fire air inlet channel 6 and the boss can be integrally formed. It should be noted that the inner ring fire air inlet channel 6 and the boss can also be connected separately. The inner ring fire air intake passage 6 is installed at the outlet 3-1-1. Specifically, the outer peripheral wall of the inner ring fire air intake passage 6 is connected with the peripheral wall of the outlet 3-1-1.

Continuing to refer to Figure 4, the inner fire cover 4 includes a tubular body 4-1 with a top opening and a mesh 4-2 with a number of fire holes. The mesh 4-2 is installed in the top opening, and the body 4-1 is sleeved on the convex On the outer wall of the table, and the mesh 4-2, the inner wall of the tubular body 4-1 and the top wall of the boss form an inner fire cover gas gathering bin, which can be used to buffer the inner ring fire intake channel 6 The inflowing gas avoids the impact on the mesh sheet 4-2 caused by the direct injection of the gas flowing into the inner ring fire intake channel 6 through the fire hole on the mesh sheet 4-2.

Further, a through hole 5-3 is opened in the middle of the air distribution plate 5, and extends downward along the hole wall of the through hole 5-3 to form a third flange 5-3-1. The space surrounded by the third flange 5-3-1 serves as The outer ring fire intake passage 7, the inner diameter of the inner ring fire intake passage 6 is larger than the outer diameter of the outer ring fire intake passage 7, the gas enters from the outer ring fire intake passage 7, and part of it enters the inner ring fire intake passage 6. , Part of it spreads to the outer fire cover gas distribution bin.

4, specific to the embodiment of the present invention, the outer fire cover 3 may be in the shape of a disc with a concave in the middle and a convex periphery, and the gas distribution disc 5 may be in the shape of a disc with a concave in the middle and a convex periphery, and an outer fire cover is formed between the two Gas distribution bin 8. The fire hole surface 3-2 is located at the convex part of the outer fire cover 3, and the connecting surface 3-1 is located at the concave part of the outer fire cover 3. The angle between the fire hole surface 3-2 and the connecting surface 3-1 is an obtuse angle. The angle between the two can also be a right angle. There are several strip fire holes 3-2-1 on the fire hole surface 3-2, and the several strip fire holes 3-2 are arranged equidistantly from the center of the outer fire cover 3. , And the center of the outer fire cover 3 is radial, the distance between two adjacent strip fire holes 3-2-1 is equal, the gas flowing into the outer fire cover gas distribution bin 8 is evenly distributed to the fire hole surface 3 -2 Burning is carried out on a number of evenly distributed strip fire holes 3-2-1, so that the gas in the outer fire cover gas distribution bin 8 can be burned more fully.

As a preferred embodiment, referring to Fig. 4, the height of the plane where the outlet of the secondary air intake channel 9 is located relative to the horizontal plane is smaller than the plane where the fire hole of the mesh 4-2 is located and the plane where the fire hole 3-2-1 is located relative to the The height of the horizontal plane; the height of the plane of the mesh 4-2 fire hole relative to the horizontal plane is not less than the height of the plane of the strip fire hole 3-2-1 relative to the horizontal plane, so that the secondary air inlet passage 9 exits the secondary The air can be fully diffused from bottom to top to the fire holes of the mesh 4-2 and the strip fire holes 3-2-1, avoiding the diffusion of secondary air to the fire holes of the mesh 4-2 and the strip fire holes 3-2 The waste caused by other than -1. It should be noted that the strip fire hole 3-2-1 in this embodiment is located on an inclined surface, that is, the connecting surface 3-2 is inclined, and the inclined connecting surface 3-2 can slowly guide the secondary air into The secondary air flowing out of the outlet of the air passage 9 flows to the strip fire hole 3-2-1, thereby providing secondary air for combustion of the gas at the strip fire hole 3-2-1. The height of the end of the strip fire hole 3-2-1 close to the center of the outer fire cover 3 is less than the height of the mesh 4-2, and the height of the end of the strip fire hole 3-2-1 away from the center of the outer fire cover 3 is not less than the height of the net The height of the sheet 4-2, preferably, the height of the mesh sheet 4-2 is equal to the height of the end of the strip fire hole 3-2-1 away from the center of the outer fire cover 3, so that the fire holes of the inner fire cover 4 and the outer fire cover 3 The sprayed flame is on the same plane, which makes the heating of the bottom of the pot more uniform, and improves the combustion efficiency of the gas in the inner fire cover 4 and the outer fire cover 3.

The outer fire cover 3, the inner fire cover 4, and the gas distribution plate 5 in the fire cover assembly in this embodiment can be made of stainless steel. Specifically, the stainless steel fire cover assembly has a relatively low cost and is easy to mass produce.

The second embodiment of the present invention relates to a fire cover assembly. Compared with the first embodiment, the difference is that the concentric assembly in this embodiment includes a tube body 9-1, and the tube body 9-1 is opposite to each other. The two ends respectively penetrate through the connecting surface 3-3 and the air distribution plate 5 to form a secondary air intake passage 9. The outer walls of the opposite ends of the tube body 9-1 are respectively fixed to the holes on the connection surface 3-3 and the air distribution plate 5 The holes, specifically, the outer wall of the opposite ends of the tube body 9-1 and the connecting surface 3-3 and the gas distribution plate 5 can be fixed by welding.

As a preferred embodiment, as shown in Figs. 5-6, a circle of skirts 9-2 are provided along the circumference of the outer wall of the opposite ends of the pipe body 9-1, and the bottom wall of one of the skirts 9-2 and the outer fire cover 3, the top wall of the other skirt 9-2 resists the bottom wall of the gas distribution plate 5, and the skirt 9-2 resists the walls of the outer fire cover 3 and the gas distribution plate 5. The pipe body 9-1 is clamped between the outer fire cover 3 and the gas distribution plate 5.

It is worth noting that the outer ring fire air inlet passage 7 is arranged around the outer side of the inner ring fire air inlet passage 6, wherein the outer diameter of the inner ring fire air inlet passage 6 is smaller than the inner diameter of the outer ring fire air inlet passage 7. The disc 5 and the outer fire cover 3 are arranged coaxially. The inner ring fire air inlet channel 6 and the outer ring fire air inlet channel 7 are both arranged in the middle of the gas distribution disc 5 and the outer fire cover 3. Accordingly, the inner ring fire air inlet The channel 6 and the outer ring fire air inlet channel 7 are arranged coaxially to avoid the mutual interference between the inner ring fire air inlet channel 6 and the outer ring fire air inlet channel 7 when assembling the furnace head, which is beneficial to the fire cover assembly and the furnace head. Fast and stable assembly.

The third embodiment of the present invention relates to a fire cover assembly. Compared with the second embodiment, the difference is: as shown in FIG. 7, a plurality of bendable ears are arranged at intervals on the end of the tube body 9-1. The piece 9-3, the ear piece 9-3 is used for the fixed connection with the connecting surface 3-3 of the outer fire cover 3 when it is bent. It should be noted that the ear piece 9-3 can be arranged on the tube body 9-1 One end of the tube body 9-1 can also be arranged at two opposite ends of the tube body 9-1. Further, the ear pieces 9-3 can be arranged on the outer wall surface of the tube body 9-1 end, or can be arranged on the tube body 9-1 end On the top wall, this embodiment is not limited here.

The fourth embodiment of the present invention relates to a fire cover assembly. This embodiment is a further improvement of the second embodiment. The main improvement is: as shown in Figures 8-10, the inner fire cover 4 includes a clip 11 , The clip 11 fixes the mesh 4-2 in the top opening, extends inwardly from the top wall of the body 4-1 to form a convex edge 4-1-1, and the inner wall of the body 4-1 is provided with a groove 4-1-1 2. The clip 11 is clamped in the groove 4-1-2, and the clip 11 fixes the mesh 4-2 between the groove 4-1-2 and the convex edge 4-1-1.

Specifically, the setting of the protruding edge 4-1-1 can limit the position of the mesh 4-2, that is, prevent the mesh 4-2 from deviating from the position of the mesh 4-2 during use by conflicting with the edge of the upper surface of the mesh 4-2 Outside the body 4-1; the clip 11 can support the mesh 4-2, so as to prevent the mesh 4-2 from falling out of the body 4-1, the clip 11 can be against the bottom edge of the mesh 4-2 It can also be held against the middle of the mesh 4-2, as long as the card strip 11 and the mesh 4-2 can be held against the mesh 4-2 are within the protection scope of the present invention.

Preferably, the clip strip 11 is formed by bending an elastic wire, and includes at least three clamping portions 11-1 and a connecting portion 11- located between the clamping portions 11-1 and connecting the at least three clamping portions 11-1. 2. At least three points of the clamping portion 11-1 are set in the groove 4-1-2. It should be noted that the clamping portion 11-1 of the clamping strip 11 is the clamping strip 11 and the groove 4-1-2. 2 is the clamping part, the connection part 11-2 is a suspended part connecting the clamping part 11-1, at least three clamping parts 11-1 include three clamping contacts, and the connection of the three clamping contacts forms an acute triangle , That is, the three-point connection between the clip 11 and the groove 4-1-2 forms an acute triangle, and the clip 11 penetrates the inner wall of the body 4-1, which improves the stability of the installation of the clip 11. In addition, the concave The width and depth of the groove 4-1-2 are slightly larger than the diameter of the elastic wire of the clip 11 so that it can be inserted smoothly and there is no extra gap in it. The diameter and elastic properties of the elastic wire should be selected to meet its stable support It holds the mesh 4-2 and maintains its elastic performance at high temperatures. In one embodiment, the elastic wire may be made of spring steel that can withstand high temperatures above 500 degrees.

Specifically, the number of connecting portions 11-2 in this embodiment may be two, and the clamping portion 11-1 has three points that are arranged in the groove 4-1-2, that is, the card strip 11 is shaped like a gate. Of course, the connection There may be 3, 4, 5, or 6 parts 11-2, and the embodiments of the present invention will not be repeated here.

During the installation process of the clip 11 and the body 4-1, the overall size of the clip 11 is slightly larger than the bottom diameter of the groove 4-1-2. Due to the interference of the inner wall of the body 4-1, the two connections can be pressed first by external force Part 11-2 makes the two connecting parts 11-2 move towards each other, so that the connecting part 11-2 is compressed and deformed under the action of external force to store elastic potential energy, and the clip 11 is also affected by the external force. Reduce the deformation under the action, and then place the clip 11 in the groove 4-1-2. At the same time, cancel the external force pressing, the two connecting parts 11-2 release the elastic potential energy, and the two connecting parts 11-2 move away from each other The connecting part 11-2 stretches to restore its shape, which improves the resistance force of the clip 11 and the groove 4-1-2, thereby strengthening the fixing strength of the mesh 2. At the same time, it can be completed by gently applying external force. The assembly of the clip 11 and the body 4-1 saves assembly time and improves assembly efficiency.

As a preferred embodiment, the mesh 4-2 may be a thin metal sheet whose shape matches the cross-sectional shape of the inner wall of the body 4-1. Specifically, the mesh 4-2 and the cross-sectional shape of the inner wall of the body 4-1 The shape of the main body can be circular, and the mesh 4-2 can be a high-temperature resistant metal material, such as stainless steel or nickel-chromium iron.

Preferably, the mesh 4-2 is in the shape of a curved surface with the middle part protruding upward, which can further reduce the distance between the flame and the bottom of the pot and reduce the waste of flame heat.

In addition, several fire holes 4-2-1 can be evenly distributed on the mesh 4-2. The evenly distributed fire holes 4-2-1 can make the flame spray more uniform. The hole diameter is the same. Specifically, the hole diameter of the fire hole 4-2-1 can be 1.0～2.0mm, the distance between two adjacent fire holes 4-2-1 can be 1.5～2.5mm, and the thickness of the mesh 2 It can be 0.8 to 1.2 mm.

Compared with the prior art, the mesh cover is arranged on the top opening of the main body through a clip strip, so that the gas can be burned directly from the top of the fire cover. More heat directly heats the bottom of the pot, thereby improving the utilization of heat. In addition, it can be understood that the inner fire cover is located in the middle of the fire cover assembly, and the temperature is very high when the flame is burning. It is the highest temperature component in the fire cover assembly, and the mesh is easily blocked by oil and needs to be cleaned frequently. Based on this situation, in this embodiment, the clip is placed in the groove. On the one hand, the clip is used to divert the oil. Specifically, the embodiment uses the clip to resist against the bottom or middle of the mesh to support the mesh. When the oil in the pot flows into the main body of the fire cover from the mesh on the mesh, the clip located below or below the mesh can divert the oil from the mesh, thereby reducing the oil pollution in the mesh. The accumulation on the holes reduces the probability of the mesh being blocked by oil; on the other hand, the clip is used to fix the mesh, so that when the mesh is deposited with oil, the user can pull out the clip at any time, so that the mesh can be easily removed for operation Clean.

The fifth embodiment of the present invention relates to a fire cover assembly. Compared with the second embodiment, the difference is that: as shown in FIGS. 11 to 12, the clip 11 includes three clamping portions 11-1 and Two connecting portions 11-2 between the clamping portions 11-1 and connecting the three clamping portions 11-1, wherein two ends of one of the clamping portions 11-1 pass through the two connecting portions 11-2 respectively It is connected to the other two clamping portions 11-1, and the ends of the other two clamping portions 11-1 are free ends, that is, the clamping portion 11-1 and the connecting portion 11-2 are connected to form a gate-like shape. The clamping portion 11-1 is the clamping portion of the clamping strip 11 and the groove 4-1-2, the connecting portion 11-2 is the suspended portion connecting the clamping portion 11-1, and the clamping portion 11-1 is The arc-shaped line segment, the connecting portion 11-2 is a folding line segment bent in the middle, and the entire clamping portion 11-1 is clamped in the groove 4-1-2.

It is worth mentioning that the free ends of the two clamping portions 11-1 are bent toward the inside to form a resisting portion 11-3. The resisting portion 11-3 resists the bottom wall of the mesh 4-2. After the two clamping portions 11-1 are clamped to the groove 4-1-2, the abutting portions 11-3 abut against the bottom wall of the mesh 4-2 to achieve further fixation, thereby further improving the mesh 4 -2 Stability of installation.

The sixth embodiment of the present invention relates to a burner, which includes a furnace head assembly 10 and a fire cover assembly as described in the second or third embodiment, as shown in FIGS. 13-14, in this embodiment The burner includes the flame cover assembly in the second embodiment as an example for description. The burner head assembly 10 includes an inner ring fire air supply channel 10-1, and an outer ring fire air supply channel 10-2 surrounding the outer ring fire air supply channel. , The inner ring ejection pipe 10-3 connected with the inner ring fire air passage 10-1, the outer ring ejection pipe 10-4 connected with the outer ring fire air passage 10-2, the inner ring fire air passage 10-1 and The inner ring fire air inlet passage 6 is in communication, and the outer ring fire air supply passage 10-2 is in communication with the outer ring fire air inlet passage 7.

It should be noted that the furnace head assembly 10 also includes an ignition needle 10-5 installed on the outer wall of the outer ring fire air supply passage 10-2. The ignition needle 10-5 penetrates the secondary air intake passage 9 and protrudes from the secondary air intake passage 9 Outside the air intake channel 9.

The seventh embodiment of the present invention relates to a burner. Compared with the sixth embodiment, the difference is that the burner includes the fire cap assembly as described in the fourth or fifth embodiment.

The eighth embodiment of the present invention relates to a gas stove including the burner as described in the sixth embodiment.

In the description of the embodiments of the present invention, the terms "several" and "multiple" refer to two or more.

A person of ordinary skill in the art can understand that the foregoing embodiments are specific implementations of the present invention, and are not used to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (19)

1. An inner fire cover, which is characterized in that it comprises a tubular body with a top opening and a mesh with a plurality of fire holes. The mesh is installed in the top opening and extends inward on the top wall of the body to form a convex The edge of the top surface of the mesh sheet is against the bottom surface of the convex edge.
2. The inner fire cover according to claim 1, wherein the inner fire cover comprises a clip strip that fixes the mesh in the top opening, and a groove is provided on the inner wall of the body The clip strip is clamped in the groove, and the clip strip fixes the mesh between the groove and the convex edge.
3. The inner fire cover according to claim 2, wherein the clip strip is formed by bending an elastic wire, and includes at least three clamping parts and a connecting part located between the clamping parts, and the clip At least three points of the connecting part are clamped in the groove.
4. The inner fire cover according to claim 3, wherein the at least three clamping parts include three clamping points, and the connecting lines of the three clamping points form an acute triangle.
5. The inner fire cover according to claim 3, wherein the clip strip has an opening, the ends of the two adjacent clip portions are free ends, and the free ends are bent toward the inside to form a resistance Part, the resisting part can resist the bottom wall of the mesh.
6. A fire cover assembly, which is characterized by comprising an outer fire cover, an air distribution plate and the inner fire cover according to any one of claims 1 to 5;

   An inner flame cover installation part is arranged in the middle of the outer flame cover, the inner flame cover is arranged on the inner flame cover installation part, and an inner ring fire air inlet channel is provided in the center of the inner flame cover installation part;

   A fire hole surface is provided on the periphery of the outer fire cover; a connecting surface is formed between the fire hole surface and the inner fire cover installation part;

   The center of the gas distributor plate has an outer ring fire air inlet channel;

   The outer fire cover is concentrically assembled above the gas distribution plate; thus, under the fire hole surface, an outer fire cover gas distribution bin is formed between the outer fire cover and the gas distribution plate, and is also on the connecting surface A number of secondary air intake passages that penetrate the connecting surface and the air distribution plate are evenly distributed.
7. The fire cover assembly of claim 6, wherein the concentric assembly includes a first flange provided on the gas distribution plate and a second flange provided on the connecting surface, surrounding the The through part on the air distributor plate extends upward to form the first flange; the second flange is formed by extending downward around the through part of the connecting surface, the first flange and the second flange Connecting to form the secondary air intake passage.
8. The fire cover assembly of claim 7, wherein the top wall of the first flange abuts the top wall of the second flange, or

   The inner side wall of the first flanging abuts against the outer side wall of the second flanging; or

   The outer side wall of the first flanging abuts against the inner side wall of the second flanging.
9. The fire cover assembly according to claim 6, wherein the concentric assembly includes a tube body, and opposite ends of the tube body respectively penetrate the connecting surface and the air distribution plate to form the secondary air Intake channel.
10. The fire cover assembly according to claim 9, wherein a circle of skirts are arranged along the outer wall of the opposite ends of the pipe body, wherein the bottom wall of one of the skirts and the top wall of the outer fire cover Resisting, the top wall of the other skirt resists the bottom wall of the air distributor.
11. The fire cover assembly according to claim 9, wherein a plurality of bendable lugs are arranged at intervals on the end of the tube body, and the lugs are used to connect the outer fire cover when it is bent. The connection surface is matched and fixedly connected.
12. The fire cover assembly according to claim 6, wherein the concentric assembly further comprises a first outer convex ring extending downwardly along the outer peripheral wall of the outer fire cover, and facing toward the outer peripheral wall of the gas distribution plate. The upper extension forms a second outer convex ring, and the first outer convex ring is fixedly connected with the second outer convex ring.
13. The fire cover assembly according to any one of claims 6 to 12, wherein the inner fire cover mounting portion is a boss formed upwardly protruding from the middle of the outer fire cover, and is located on the top wall of the boss To open an exit,

    The inner ring fire air inlet passage is extended downward along the peripheral wall of the outlet, or the inner ring fire air inlet passage is connected to the boss in a split type, and the inner ring fire air inlet passage is installed on the exit.
14. The fire cover assembly according to claim 13, wherein a through hole is opened in the middle of the air distribution plate, and a third flange is formed along the hole wall of the through hole, and a space surrounded by the third flange As the outer ring fire air inlet passage, and the outer ring fire air inlet passage surrounds the outer side of the inner ring fire air inlet passage.
15. The fire cover assembly of claim 13, wherein the body is sleeved on the outer wall of the boss.
16. The fire cover assembly according to claim 15, wherein the fire hole surface has a plurality of strip-shaped fire holes, and the plurality of strip-shaped fire holes are arranged equidistantly from the center of the outer fire cover and surround The center of the outer fire cover is radial, and the distance between two adjacent strip fire holes is equal.
17. The fire cover assembly according to claim 16, wherein the height of the plane where the outlet of the secondary air intake passage is relative to the horizontal plane is smaller than the plane where the mesh fire hole is located and the plane where the bar-shaped fire hole is located. The height of the horizontal plane; the height of the plane where the mesh fire holes are relative to the horizontal plane is not less than the height of the plane where the strip-shaped fire holes are relative to the horizontal plane.
18. A burner, characterized by comprising a furnace head assembly and the fire cover assembly according to any one of claims 6 to 17, the furnace head assembly comprising an inner ring fire gas supply channel, surrounding the inner ring fire gas supply The outer ring fire air supply channel outside the channel, the inner ring ejector pipe communicating with the inner ring fire air delivery channel, and the outer ring ejector pipe communicated with the outer ring fire air delivery channel, the inner ring fire air delivery channel and the The inner ring fire air inlet channel is in communication, and the outer ring fire air supply channel is in communication with the outer ring fire air inlet channel.
19. A gas stove, characterized by comprising the burner as claimed in claim 18.

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