Combustor and gas stove

Abstract

The combustor comprises a fire cover and a fluid machine, the fire cover is provided with an outer ring fire hole, an inner ring fire hole and a secondary air channel, the secondary air channel is suitable for secondary air to be sprayed out, and the secondary air channel is provided with a first air outlet and a second air outlet; the first air outlet is suitable for providing secondary air for flames generated by the outer ring fire holes, the second air outlet is suitable for providing secondary air for flames generated by the inner ring fire holes, and the fluid machine is suitable for providing secondary air for the secondary air channel. Secondary air ejected from a first air outlet of the secondary air channel is supplemented to the flame generated by the outer ring fire hole, and secondary air ejected from a second air outlet of the secondary air channel is supplemented to the flame generated by the inner ring fire hole, so that the flame generated by the outer ring fire hole and the flame generated by the inner ring fire hole are respectively and accurately supplemented with the secondary air; and the utilization rate of secondary air is high, and sufficient combustion of fuel gas is facilitated.

Description

Technical Field

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

[0002] A certain amount of primary air will be mixed into the process of gas being injected into the burner. During the combustion process of the burner, the surrounding environment will supplement secondary air to the flame. However, the current primary and secondary air are both passively supplemented, and the thermal efficiency of the gas stove needs to be improved. 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 burner.

[0004] To achieve the above objectives, the present application discloses a burner, comprising:

[0005] a fire cover, provided with an outer ring fire hole, an inner ring fire hole and a secondary air channel, wherein the secondary air channel is suitable for ejecting secondary air, the secondary air channel has a first air outlet and a second air outlet, the first air outlet is suitable for providing secondary air for the flame generated by the outer ring fire hole, and the second air outlet is suitable for providing secondary air for the flame generated by the inner ring fire hole; and

[0006] The fluid machine is adapted to provide secondary air to the secondary air passage.

[0007] In some embodiments of the present application, the secondary air channel is arranged between the outer ring fire hole and the inner ring fire hole, the outer ring fire hole is located on the outside of the secondary air channel, the inner ring fire hole is located on the inside of the secondary air channel, the first air outlet is open outward, and the second air outlet is open inward.

[0008] In some embodiments of the present application, the outer ring fire holes are arranged obliquely from bottom to top away from the center of the fire cover.

[0009] In some embodiments of the present application, the first air outlet is arranged to be inclined from bottom to top away from the center of the fire cover, and the outer ring fire hole and the first air outlet are exposed in a top-down direction.

[0010] In some embodiments of the application, the inner ring fire holes are arranged obliquely from bottom to top toward the center of the fire cover.

[0011] In some embodiments of the present application, the fire cover is provided with an inner cavity, and the inner ring fire hole and the second air outlet are respectively connected to the inner cavity.

[0012] In some embodiments of the present application, the inner cavity is configured to gradually expand from bottom to top.

[0013] In some embodiments of the present application, the fire cover has a baffle, which is located on the airflow path of the secondary air channel to block the secondary air, and the first air outlet is provided on one side of the baffle, and the second air outlet is provided on the other side of the baffle.

[0014] In some embodiments of the present application, the lowest point of the first air outlet is higher than the highest point of the outer ring fire hole;

[0015] And / or, the lowest point of the second air outlet is higher than the highest point of the inner ring fire hole.

[0016] In some embodiments of the present application, the burner also includes a burner head, the fire cover is arranged on the burner head, the burner head is provided with a first cavity, a second cavity and a third cavity, the outer ring fire hole is connected to the first cavity, the secondary air channel is connected to the second cavity, the inner ring fire hole is connected to the third cavity, the first cavity is suitable for receiving fuel gas and induced air, the second cavity is suitable for receiving secondary air provided by the fluid machinery, and the third cavity is suitable for receiving fuel gas and induced air.

[0017] In some embodiments of the present application, the burner is an up-flow burner, and the fluid machine is connected to the nozzle bracket;

[0018] Alternatively, the burner is a downdraft burner, and the fluid machinery is connected to the burner head.

[0019] A second aspect of the present application discloses a gas stove, which includes the burner described above.

[0020] The technical solution of the present application is to set a secondary air channel on the fire cover, and the secondary air channel receives secondary air provided by the fluid machinery. The secondary air ejected from the first air outlet of the secondary air channel is supplemented to the flame generated by the outer ring fire hole, and the secondary air ejected from the second air outlet of the secondary air channel is supplemented to the flame generated by the inner ring fire hole. In this way, the secondary air is accurately supplemented to the flame generated by the outer ring fire hole and the flame generated by the inner ring fire hole respectively without interfering with each other. The utilization rate of the secondary air is high, which is conducive to the full combustion of the gas.

[0021] 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

[0022] 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.

[0023] Figure 1 Schematic diagram of a burner (downward air inlet burner) in some embodiments;

[0024] Figure 2 for Figure 1 Burner schematic diagram shown (viewing angle and Figure 1 different);

[0025] Figure 3 for Figure 1 Exploded view of the burner shown;

[0026] Figure 4 for Figure 1 A cross-sectional view of the burner is shown;

[0027] Figure 5 for Figure 4 The enlarged view marked as A in FIG;

[0028] Figure 6 Schematic diagram of a burner (upper air inlet burner) in some embodiments;

[0029] Figure 7 for Figure 6 Exploded view of the burner shown.

[0030] Description of Figure Numbers:

[0031] Fire cover 1000, outer ring fire cover 1010, inner ring fire cover 1020, outer ring fire hole 1100, inner ring fire hole 1200, secondary air channel 1300, first air outlet 1310, second air outlet 1320, baffle 1400, inner cavity 1500, burner head 2000, first cavity 2100, second cavity 2200, third cavity 2300, fluid machinery 3000, first ejector pipe 4100, third ejector pipe 4300, nozzle bracket 5100.

[0032] 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

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] The first aspect of the present application discloses a burner, Figures 1 to 5As shown, in some embodiments, the burner includes a fire cover 1000 and a fluid machine 3000. The fire cover 1000 is provided with an outer ring fire hole 1100 and an inner ring fire hole 1200. The so-called outer ring fire hole 1100 is located further outward relative to the inner ring fire hole 1200, and the so-called inner ring fire hole 1200 is located further inward relative to the outer ring fire hole 1100. It can be understood that the outer ring fire hole 1100 and the inner ring fire hole 1200 should be understood as structures for gas outflow, and the shape can be hole-shaped or slit-shaped. Of course, other shapes are also possible. For example, in the accompanying drawings, the outer ring fire hole 1100 is in the shape of an annular slit, and the inner ring fire hole 1200 is in the shape of a hole. Multiple inner ring fire holes 1200 are arranged in a ring shape, and the outer ring fire hole 1100 surrounds the inner ring fire hole 1200. Alternatively, the outer ring fire holes 1100 are in the shape of holes, and a plurality of outer ring fire holes 1100 are arranged in a ring shape and surround the inner ring fire holes 1200 , and the inner ring fire holes 1200 are in the shape of an annular gap.

[0038] The gas is injected into the interior of the burner and ejected from the outer ring fire holes 1100 and ignited to form an outer ring flame. The gas is injected into the interior of the burner and ejected from the inner ring fire holes 1200 and ignited to form an inner ring flame. In the related art, the gas injected into the interior of the burner is simultaneously mixed with air. This air is called primary air. The gas and primary air are ejected from the corresponding outer ring fire holes 1100 and inner ring fire holes 1200 and then ignited to form a flame. During the gas combustion process, the air in the surrounding environment is supplemented to the flame through the effect of buoyancy to participate in the combustion. This air is called secondary air. The supplement of primary air and secondary air in the related art is a passive supplement, which is greatly affected by the structure of the burner. It is very challenging to achieve full combustion of the gas, and the thermal efficiency of the burner needs to be improved.

[0039] To improve the thermal efficiency of the burner, in this embodiment, the fire cover 1000 is further provided with a secondary air channel 1300 for ejecting secondary air. Specifically, the secondary air channel 1300 is provided with a first air outlet 1310 and a second air outlet 1320. After entering the secondary air channel 1300, the secondary air can be ejected from the first air outlet 1310 and the second air outlet 1320. The secondary air ejected from the first air outlet 1310 is provided to the flame generated by the outer ring fire holes 1100, which is conducive to the combustion of the gas ejected from the outer ring fire holes 1100. The secondary air ejected from the second air outlet 1320 is provided to the flame generated by the inner ring fire holes 1200, which is conducive to the combustion of the gas ejected from the inner ring fire holes 1200. The secondary air channel 1300 of this embodiment is divided into two paths, thereby realizing directional supply to the outer ring fire hole 1100 and the inner ring fire hole 1200, minimizing the interference between the secondary air supplied to the outer ring fire hole 1100 and the secondary air supplied to the inner ring fire hole 1200, and making the supply of secondary air more targeted.

[0040] The secondary air leading to the secondary air channel 1300 is supplied by the fluid machine 3000. The fluid machine 3000 is a machine that uses fluid as a working medium for energy conversion. For example, the fluid machine 3000 is a fan. The secondary air can be forced to be provided through the action of the fluid machine 3000, that is, the fluid machine 3000 can make the secondary air enter the secondary air channel 1300 in the form of blowing, and then be ejected from the first air outlet 1310 and the second air outlet 1320. This is an active supplement. The secondary air forcibly provided by the fluid machine 3000 can provide enough oxygen and more actively supplement the flames generated by the outer ring fire hole 1100 and the inner ring fire hole 1200. This is conducive to improving the combustion efficiency of the gas ejected from the outer ring fire hole 1100 and the inner ring fire hole 1200, thereby improving the thermal efficiency of the burner.

[0041] Combine Figure 4 and Figure 5 As shown, in some embodiments, the secondary air channel 1300 is arranged between the outer ring fire hole 1100 and the inner ring fire hole 1200, the outer ring fire hole 1100 is arranged on the outside of the secondary air channel 1300, and the inner ring fire hole 1200 is arranged on the inside of the secondary air channel 1300, the outer side is farther away from the center of the fire cover 1000 relative to the inner side, and the inner side is closer to the center of the fire cover 1000 relative to the outer side. In the structure shown in the accompanying drawings, the outer ring fire hole 1100 surrounds the secondary air channel 1300, and the secondary air channel 1300 surrounds the inner ring fire hole 1200, which is beneficial to the structural arrangement of the outer ring fire hole 1100, the secondary air channel 1300 and the inner ring fire hole 1200.

[0042] The first air outlet 1310 opens outward, and the second air outlet 1320 opens inward, that is, the first air outlet 1310 is away from the center of the fire cover 1000 and thus sprays secondary air toward the outside, and the second air outlet 1320 is toward the center of the fire cover 1000 and thus sprays secondary air toward the inside. Since the outer ring fire hole 1100 is located on the outside of the secondary air channel 1300 and the inner ring fire hole 1200 is located on the inside of the secondary air channel 1300, the secondary air can be supplied by the flame generated for the outer ring fire hole 1100 through the first air outlet 1310, and the secondary air can be supplied by the flame generated for the inner ring fire hole 1200 through the second air outlet 1320, thereby reducing the interference of the secondary air sprayed from the first air outlet 1310 and the second air outlet 1320.

[0043] Combine Figure 5As shown, in some embodiments, the outer ring fire holes 1100 are tilted upward from the center of the fire cover 1000. This facilitates the formation of a wide-area outer ring flame generated by the outer ring fire holes 1100. For example, the outer ring fire holes 1100 are shaped like an annular slit, so that gas is ejected along the circumference of the fire cover 1000, increasing the contact area with the secondary air ejected from the first gas outlet 1310, which is conducive to ensuring the complete combustion of the gas ejected from the outer ring fire holes 1100.

[0044] Combine Figure 5 As shown, in some embodiments, when the outer ring fire hole 1100 is tilted from bottom to top away from the center of the fire cover 1000, the first air outlet 1310 is also designed to be tilted from bottom to top away from the center of the fire cover 1000, and the outer ring fire hole 1100 and the first air outlet 1310 are exposed in a top-down direction.

[0045] Specifically, the orientation in this article is based on the installation environment of the gas stove. The side of the gas stove close to the ground is the bottom (top), and the side of the gas stove away from the ground is the top (top). The outer ring fire hole 1100 and the first air outlet 1310 are exposed in the top-down direction, that is, the outer ring fire hole 1100 and the first air outlet 1310 can be seen when observing the fire cover 1000 from the top-down direction. Through such an arrangement, the gas ejected from the outer ring fire hole 1100 has a vertical speed and a horizontal speed away from the center of the fire cover 1000, and the gas ejected from the first air outlet 1310 has a vertical speed and a horizontal speed away from the center of the fire cover 1000. This makes it easier for the gas ejected from the outer ring fire hole 1100 and the gas ejected from the first air outlet 1310 to mix, thereby further improving the combustion efficiency of the gas ejected from the outer ring fire hole 1100.

[0046] Combine Figure 5 As shown, in some embodiments, the inner ring fire holes 1200 are tilted from bottom to top toward the center of the fire cover 1000. When the flame touches the bottom of the cooker, it will float outward. By designing the inner ring fire holes 1200 to be tilted from bottom to top toward the center of the fire cover 1000, the inner ring flame generated by the inner ring fire holes 1200 converges toward the center of the bottom of the cooker, which is more conducive to low-fire cooking.

[0047] Combine Figures 3 to 5As shown, in some embodiments, the fire cover 1000 is provided with an inner cavity 1500, the inner ring fire holes 1200 are in communication with the inner cavity 1500, and the second air outlet 1320 is in communication with the inner cavity 1500. When the gas ejected from the outer ring fire holes 1100 is burning, in addition to receiving the secondary air provided by the first air outlet 1310, it is not excluded that the gas ejected from the surrounding environment is received. Since the inner ring fire holes 1200 are closer to the center of the fire cover 1000 than the outer ring fire holes 1100, it is difficult for the gas ejected from the inner ring fire holes 1200 to receive the secondary air from the surrounding environment when burning. Therefore, in this embodiment, by providing the inner cavity 1500, the inner cavity 1500 has a certain restraining effect on the gas ejected from the inner ring fire holes 1200 and the gas ejected from the second air outlet 1320. The gas ejected from the inner ring fire holes 1200 and the gas ejected from the second air outlet 1320 are more easily mixed in the inner cavity 1500, thereby further improving the combustion efficiency of the gas. Furthermore, when the gas ejected from the inner ring fire holes 1200 burns, heat accumulates within the inner cavity 1500, preventing rapid heat dissipation and improving the heating effect on the cooker. This high temperature accumulation also facilitates the conversion of carbon monoxide, further improving combustion efficiency, especially during combustion at minimum flame, thereby preventing heat loss. Alternatively, the inner cavity 1500 can be designed to gradually expand from bottom to top, allowing heat to radiate upward (toward the cooker), further improving the heating effect on the cooker.

[0048] Combine Figure 5 As shown, in some embodiments, the fire cover 1000 has a baffle 1400, which is arranged on the airflow path of the secondary air channel 1300 to block the secondary air, the first air outlet 1310 is arranged on one side of the baffle 1400, and the second air outlet 1320 is arranged on the other side of the baffle 1400.

[0049] Specifically, the secondary air is blocked by the baffle 1400 during its transmission along the secondary air passage 1300. When blocked by the baffle 1400, the secondary air is diverted to either side of the baffle 1400. Since the first air outlet 1310 and the second air outlet 1320 are located on either side of the baffle 1400, one airflow is ejected through the first air outlet 1310, and the other airflow is ejected through the second air outlet 1320. It is understood that the secondary air is provided by the fluid machinery 3000 and has a relatively high flow rate. The baffle 1400 acts to block and divert the secondary air, thereby decelerating the secondary air and reducing its impact on the flames generated by the outer and inner fire ring holes 1100, 1200. This facilitates stable combustion of the gas and reduces the impact on flame transfer (from the inner fire ring hole 1200 to the outer fire ring hole 1100, or vice versa). The baffle 1400 may be a separate component from the secondary air passage 1300 , or may be formed as part of the passage wall of the secondary air passage 1300 .

[0050] Combine Figure 5 As shown, in some embodiments, the lowest point of the first air outlet 1310 is higher than the highest point of the outer ring flame holes 1100. When the secondary air is ejected from the first air outlet 1310, its temperature is lower than that of the outer ring flame. The secondary air has a tendency to sink, making it easier to replenish the base of the outer ring flame, thereby more fully utilizing the secondary air ejected from the first air outlet 1310. Similarly, the lowest point of the second air outlet 1320 is higher than the highest point of the inner ring flame holes 1200. When the secondary air is ejected from the second air outlet 1320, its temperature is lower than that of the inner ring flame. The secondary air has a tendency to sink, making it easier to replenish the base of the inner ring flame, thereby more fully utilizing the secondary air ejected from the second air outlet 1320.

[0051] The fire cover 1000 can be an integrated structure or a split structure, for example, Figures 1 to 5 As shown, the fire cover 1000 includes an outer ring fire cover 1010 and an inner ring fire cover 1020. The outer ring fire cover 1010 surrounds the inner ring fire cover 1020. The outer ring fire cover 1010 is provided with an outer ring fire hole 1100. The inner ring fire hole 1200 is provided with an inner ring fire hole 1200 and an inner cavity 1500. A secondary air channel 1300 and a first air outlet 1310 are arranged between the outer ring fire cover 1010 and the inner ring fire cover 1020. The second air outlet 1320 is arranged in the inner ring fire hole 1200. The outer ring fire cover 1010 and the inner ring fire cover 1020 are split components and are assembled into the fire cover 1000, which is convenient for manufacturing.

[0052] Combine Figures 1 to 5As shown, in some embodiments, the burner also includes a burner head 2000, which is provided with a first cavity 2100, a second cavity 2200 and a third cavity 2300. The fire cover 1000 is covered on the burner head 2000, thereby enclosing the first cavity 2100, the second cavity 2200 and the third cavity 2300. In this embodiment, the first cavity 2100 surrounds the second cavity 2200, the second cavity 2200 surrounds the third cavity 2300, and the first cavity 2100 and the second cavity 2200 are arranged with a common wall, and the second cavity 2200 and the third cavity 2300 are arranged with a common wall, which is conducive to simplifying the structure of the burner head 2000.

[0053] The outer ring fire hole 1100 is connected to the first cavity 2100. After the gas enters the first cavity 2100, it is ejected from the outer ring fire hole 1100. Generally speaking, a first ejector pipe 4100 is provided on the burner head 2000. The first ejector pipe 4100 is connected to the first cavity 2100. The nozzle is aimed at the first ejector pipe 4100 to eject the gas. In the process of the gas being injected into the first ejector pipe 4100, a negative pressure is formed on the surrounding environment, so that the air of the surrounding environment is synchronously ejected into the first ejector pipe 4100 (these air is primary air, also called ejected air). The primary air and the gas are mixed in the first cavity 2100 and then ejected from the outer ring fire hole 1100 and ignited to form a flame.

[0054] The inner ring fire hole 1200 is connected to the third cavity 2300. After the gas enters the third cavity 2300, it is ejected from the inner ring fire hole 1200. Generally speaking, a third ejector tube 4300 is provided on the burner head 2000. The third ejector tube 4300 is connected to the third cavity 2300. The nozzle is aimed at the third ejector tube 4300 to spray gas. In the process of the gas being injected into the third ejector tube 4300, a negative pressure is formed on the surrounding environment, so that the air of the surrounding environment is synchronously ejected into the third ejector tube 4300 (these air is primary air, also called ejected air). The primary air and gas are mixed in the third cavity 2300 and then ejected from the inner ring fire hole 1200 and ignited to form a flame.

[0055] The airflow (secondary air) generated by the fluid machinery 3000 is passed into the second cavity 2200, and the secondary air enters the secondary air channel 1300 from the second cavity 2200, and then flows out from the first air outlet 1310 and replenishes the flame generated by the outer ring fire hole 1100, and flows out from the second air outlet 1320 and replenishes the flame generated by the inner ring fire hole 1200. The fluid machinery 3000 can be directly connected to the burner head 2000 or indirectly connected to the burner head 2000.

[0056] For example, Figures 1 to 5The burner shown is a down-air burner. When the burner is applied to a gas stove, the bottom of the burner head 2000 is hidden inside the gas stove. In this case, the fluid machinery 3000 can be connected to the burner head 2000 and located inside the gas stove, thereby providing secondary air for the second cavity 2200.

[0057] For example, Figure 6 and Figure 7 The burner is an upward air inlet burner. When the burner is applied to a gas stove, the burner head 2000 is located above the panel of the gas stove. At this time, the nozzle bracket 5100 (with a nozzle installed) extends above the panel of the gas stove. In this case, the fluid machinery 3000 can be connected to the nozzle bracket 5100 and located inside the gas stove. The secondary air provided by the fluid machinery 3000 is transmitted to the second cavity 2200 of the burner head 2000 through the nozzle bracket 5100.

[0058] The second aspect of the present application discloses a gas stove, which includes the above-mentioned burner. A secondary air channel 1300 is provided on the fire cover 1000. The secondary air channel 1300 receives secondary air provided by the fluid machine 3000. The secondary air ejected from the first air outlet 1310 of the secondary air channel 1300 is supplied to the flame generated by the outer ring fire holes 1100, and the secondary air ejected from the second air outlet 1320 of the secondary air channel 1300 is supplied to the flame generated by the inner ring fire holes 1200. In this way, the secondary air is accurately supplied to the flames generated by the outer ring fire holes 1100 and the flames generated by the inner ring fire holes 1200, respectively, without interfering with each other. The utilization rate of the secondary air is high, which is conducive to the full combustion of the gas. It is understandable that the burner 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 about by the technical solution of the above-mentioned embodiment, which will not be repeated here.

[0059] 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 burner, characterized in that: include: A fire cover (1000) is provided with an outer ring fire hole (1100), an inner ring fire hole (1200) and a secondary air channel (1300), wherein the secondary air channel (1300) is suitable for ejecting secondary air, and the secondary air channel (1300) has a first air outlet (1310) and a second air outlet (1320), wherein the first air outlet (1310) is suitable for providing secondary air for the flame generated by the outer ring fire hole (1100), and the second air outlet (1320) is suitable for providing secondary air for the flame generated by the inner ring fire hole (1200); and The fluid machine (3000) is adapted to provide secondary air to the secondary air passage (1300).

2. The burner according to claim 1, wherein The secondary air channel (1300) is arranged between the outer ring fire hole (1100) and the inner ring fire hole (1200), the outer ring fire hole (1100) is located on the outside of the secondary air channel (1300), the inner ring fire hole (1200) is located on the inside of the secondary air channel (1300), the first air outlet (1310) is open outward, and the second air outlet (1320) is open inward.

3. The burner according to claim 1, wherein The outer ring fire holes (1100) are arranged obliquely from bottom to top away from the center of the fire cover (1000).

4. The burner according to claim 3, characterized in that The first air outlet (1310) is arranged obliquely from bottom to top away from the center of the fire cover (1000), and the outer ring fire hole (1100) and the first air outlet (1310) are exposed in a top-down direction.

5. The burner according to claim 1, wherein The inner ring fire hole (1200) is arranged obliquely from bottom to top toward the center of the fire cover (1000).

6. The burner according to claim 5, characterized in that The fire cover (1000) is provided with an inner cavity (1500), and the inner ring fire hole (1200) and the second air outlet (1320) are respectively communicated with the inner cavity (1500).

7. The burner according to claim 6, characterized in that The inner cavity (1500) is configured to gradually expand from bottom to top.

8. The burner according to claim 1, wherein The fire cover (1000) has a baffle (1400), which is located on the air flow path of the secondary air channel (1300) to block the secondary air, the first air outlet (1310) is provided on one side of the baffle (1400), and the second air outlet (1320) is provided on the other side of the baffle (1400).

9. The burner according to claim 1, wherein The lowest point of the first air outlet (1310) is higher than the highest point of the outer ring fire hole (1100); And / or, the lowest point of the second air outlet (1320) is higher than the highest point of the inner ring fire hole (1200).

10. The burner according to claim 1, wherein The burner further comprises a burner head (2000), the fire cover (1000) being arranged on the burner head (2000), the burner head (2000) being provided with a first cavity (2100), a second cavity (2200) and a third cavity (2300), the outer ring fire hole (1100) being in communication with the first cavity (2100), the secondary air channel (1300) being in communication with the second cavity (2200), the inner ring fire hole (1200) being in communication with the third cavity (2300), the first cavity (2100) being suitable for receiving fuel gas and induced air, the second cavity (2200) being suitable for receiving secondary air provided by the fluid machinery (3000), and the third cavity (2300) being suitable for receiving fuel gas and induced air.

11. The burner according to claim 10, characterized in that The burner is an upward air inlet burner, and the fluid machinery (3000) is connected to the nozzle bracket (5100); Alternatively, the burner is a downdraft burner, and the fluid machinery (3000) is connected to the burner head (2000).

12. A gas stove, characterized in that: A burner comprising the burner according to any one of claims 1 to 11.

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