Burner, burner and gas stove

Abstract

The utility model discloses a furnace end, a combustor and a gas stove. The furnace end comprises an inner ring furnace end body and an outer ring furnace end body, the outer ring furnace end body surrounds the inner ring furnace end body, and the outer ring furnace end body and the inner ring furnace end body are split parts and suitable for being fixedly connected through a connecting means. According to the technical scheme, the outer ring furnace end and the inner ring furnace end are designed into split parts and are connected and fixed through a connecting means, that is, the outer ring furnace end and the inner ring furnace end are assembled together after being manufactured separately, and compared with integrated pouring in the related technology, the technical scheme is beneficial to reducing the complexity of the production process, and the production cost is reduced. The furnace end is higher in production flexibility and is more suitable for manufacturing furnace ends with complex structures.

Description

Technical Field

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

[0002] A gas stove includes a burner, the burner includes a burner head and a burner cap disposed on the burner head, the burner head includes an outer ring burner head and an inner ring burner head. In the related art, the outer ring burner head and the inner ring burner head are integrally cast. The integrated manufacturing makes the manufacturing process of the burner head complex, especially with high requirements for the mold. And this solution has limitations on the structure of the burner head, mostly applicable to relatively simple burner heads, rather than those with relatively complex structures. Summary of the Utility Model

[0003] The present application aims to solve at least one of the technical problems in the related art to some extent. For this purpose, the present application provides a burner head.

[0004] To achieve the above object, the present application discloses a burner head, which includes:

[0005] An inner ring burner head; and

[0006] An outer ring burner head surrounding the inner ring burner head, the outer ring burner head and the inner ring burner head are split components and are adapted to be connected and fixed by a connecting means.

[0007] In some embodiments of the present application, the outer ring burner head and the inner ring burner head are adapted to be detachably connected by the connecting means.

[0008] In some embodiments of the present application, the connecting means is a screw connection.

[0009] In some embodiments of the present application, a first gap is formed between the outer ring burner head and the inner ring burner head.

[0010] In some embodiments of the present application, the outer ring burner head is provided with a first connecting portion protruding towards the inner ring burner head, the inner ring burner head is provided with a second connecting portion protruding towards the outer ring burner head, and the first connecting portion and the second connecting portion are adapted to be connected and fixed by the connecting means.

[0011] In some embodiments of the present application, the outer ring burner head is provided with a first cavity and a second cavity, and the inner ring burner head is provided with a third cavity.

[0012] The second aspect of the present application discloses a burner, which includes the above burner head.

[0013] In some embodiments of the present application, the burner further includes:

[0014] The burner cap is disposed on the burner head. The burner cap is provided with outer ring fire holes, middle ring fire holes and inner ring fire holes. The outer ring fire holes communicate with the first cavity of the burner head, the middle ring fire holes communicate with the second cavity of the burner head, and the inner ring fire holes communicate with the third cavity of the burner head;

[0015] The first ejector tube communicates with the first cavity of the outer ring burner head;

[0016] The second ejector tube communicates with the second cavity of the outer ring burner head; and

[0017] The third ejector tube communicates with the third cavity of the inner ring burner head.

[0018] In some embodiments of the present application, the first ejector tube and the outer ring burner head are split components and are connected and fixed to each other;

[0019] and / or, the second ejector tube and the outer ring burner head are split components and are connected and fixed to each other;

[0020] and / or, the third ejector tube and the inner ring burner head are split components and are connected and fixed to each other.

[0021] In some embodiments of the present application, the first ejector tube is adapted to transport induced air and gas, the second ejector tube is adapted to transport blast air and gas, and the third ejector tube is adapted to transport induced air and gas.

[0022] The third aspect of the present application discloses a gas stove, and the gas stove includes the above-mentioned burner.

[0023] The technical solution of the present application designs the outer ring burner head and the inner ring burner head as split components and connects and fixes them through connection means, that is, the outer ring burner head and the inner ring burner head are manufactured separately and then assembled together. Compared with the integral casting in the related art, the technical solution of the present application is beneficial to reducing the complexity of the production process, has higher flexibility in burner head production, and is more suitable for the manufacture of burner heads with complex structures.

[0024] Other advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other designs can also be obtained based on the structures shown in these drawings.

[0026] Figure 1Schematic diagram of a burner in some embodiments;

[0027] Figure 2 Exploded view of a burner in some embodiments;

[0028] Figure 3 Cross-sectional view of a burner in some embodiments;

[0029] Figure 4 For Figure 3 Enlarged view of the part marked A in

[0030] Figure 5 Assembly schematic diagram of the burner head, the first ejector tube, the second ejector tube and the third ejector tube in some embodiments;

[0031] Figure 6 Assembly schematic diagram of the burner head, the first ejector tube, the second ejector tube and the third ejector tube in some embodiments (with a different perspective from Figure 5 );

[0032] Figure 7 For Figure 5 And Figure 6 Exploded view of the structure shown in

[0033] Explanation of the reference numerals in the drawings:

[0034] Burner 1000, burner cap 1100, outer ring flame holes 1101, middle ring flame holes 1102, inner ring flame holes 1103, outer ring burner cap 1110, inner ring burner cap 1120, burner head 1200, outer ring burner head 1210, first ring wall 1211, second ring wall 1212, third ring wall 1213, first cavity 1214, second cavity 1215, first connection part 1216, inner ring burner head 1220, fourth ring wall 1221, third cavity 1222, second connection part 1223, first gap 1230, first ejector tube 1310, second ejector tube 1320, third ejector tube 1330.

[0035] The realization of the purpose of this application, its functional features and advantages will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of this application will be clearly and completely described with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the protection scope of this application.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In this application, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0039] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" can explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0040] The first aspect of this application discloses a burner head 1200, as shown in Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7 In some embodiments, the burner head 1200 includes an outer-ring burner head 1210 and an inner-ring burner head 1220. The outer-ring burner head 1210 surrounds the inner-ring burner head 1220. The outer-ring burner head 1210 and the inner-ring burner head 1220 are separate components and are connected and fixed together by a connecting means. In this embodiment, the outer-ring burner head 1210 and the inner-ring burner head 1220 are designed as separate components and connected and fixed by a connecting means, that is, the outer-ring burner head 1210 and the inner-ring burner head 1220 are manufactured separately and then assembled together. Compared with the integral casting in the related art, this embodiment is beneficial to reducing the complexity of the production process, the production flexibility of the burner head 1200 is higher, and it is more suitable for manufacturing the burner head 1200 with a complex structure.

[0041] Specifically, the burner head 1200 will be described below in conjunction with the burner 1000. The burner 1000 includes a burner head 1200 and a burner cap 1100. The burner head 1200 includes an outer-ring burner head 1210 and an inner-ring burner head 1220. The outer-ring burner head 1210 surrounds the inner-ring burner head 1220. The burner cap 1100 includes an outer-ring burner cap 1110 and an inner-ring burner cap 1120. The outer-ring burner cap 1110 surrounds the inner-ring burner cap 1120. The outer-ring burner cap 1110 covers the outer-ring burner head 1210 and encloses a certain space. The outer-ring burner cap 1110 is provided with fire holes (the outer-ring fire holes 1101 and middle-ring fire holes 1102 in the following text). The inner-ring burner cap 1120 covers the inner-ring burner head 1220 and encloses a certain space. The inner-ring burner cap 1120 is provided with a fire hole (the inner-ring fire hole 1103 in the following text). The gas is introduced into the space between the outer-ring burner cap 1110 and the outer-ring burner head 1210 and ejected through the fire holes of the outer-ring burner cap 1110, and then is ignited to form an outer-ring flame (the flame formed by the outer-ring burner cap 1110). The gas is introduced into the space between the inner-ring burner cap 1120 and the inner-ring burner head 1220 and ejected through the fire hole of the inner-ring burner cap 1120, and then is ignited to form an inner-ring flame (the flame formed by the inner-ring burner cap 1120). The aforementioned gas is a mixture of air and fuel gas.

[0042] In the related art, the outer-ring burner head 1210 and the inner-ring burner head 1220 are integrally cast. The integrated manufacturing makes the manufacturing process of the burner head 1200 complex, especially with high requirements for the mold. And this solution has limitations on the structure of the burner head 1200, mostly applicable to relatively simple burner heads 1200, and not applicable to burner heads 1200 with relatively complex structures. Therefore, in this embodiment, the outer-ring burner head 1210 and the inner-ring burner head 1220 are designed as split components. The so-called split components mean that the outer-ring burner head 1210 and the inner-ring burner head 1220 are manufactured separately and independently. After the outer-ring burner head 1210 and the inner-ring burner head 1220 are manufactured, they are connected and fixed by connecting means and assembled together. For example, the outer-ring burner head 1210 is integrally manufactured, and the inner-ring burner head 1220 is also integrally manufactured. In this way, the outer-ring burner head 1210 and the inner-ring burner head 1220 form two components, and then the outer-ring burner head 1210 and the inner-ring burner head 1220 are connected by connecting means, and the outer-ring burner head 1210 and the inner-ring burner head 1220 can be assembled together. Compared with the solution in the related art where the outer-ring burner head 1210 and the inner-ring burner head 1220 are integrally cast, the solution in this embodiment by designing the outer-ring burner head 1210 and the inner-ring burner head 1220 as split components is beneficial to reducing the manufacturing difficulty, reducing the requirements for the mold, and is especially suitable for the manufacturing of burner heads 1200 with relatively complex structures, with stronger flexibility.

[0043] Furthermore, the outer ring burner head 1210 and the inner ring burner head 1220 are detachably connected by a connecting means. With such a setting, the expandability of the burner head 1200 is stronger. Specifically, when some products require the burner 1000 to generate an outer ring flame and an inner ring flame, at this time, the outer ring burner head 1210 and the inner ring burner head 1220 need to be connected and fixed by a connecting means and assembled together. The outer ring flame cover 1110 covers the outer ring burner head 1210, and the inner ring flame cover 1120 covers the inner ring burner head 1220. When some products only require the burner 1000 to generate an outer ring flame, there is no need to assemble the outer ring burner head 1210 and the inner ring burner head 1220 together, and only the outer ring burner head 1210 is left. When some products only require the burner 1000 to generate an inner ring flame, there is no need to assemble the outer ring burner head 1210 and the inner ring burner head 1220 together, and only the inner ring burner head 1220 is left. The detachable connection between the outer ring burner head 1210 and the inner ring burner head 1220 makes it easier to assemble different types of outer ring burner heads 1210 and different types of inner ring burner heads 1220 together, and also makes it convenient to separately replace the outer ring burner head 1210 or the inner ring burner head 1220 during after-sales maintenance, greatly improving the expandability of the burner head 1200.

[0044] There are various connecting means for the detachable connection between the outer ring burner head 1210 and the inner ring burner head 1220, which can be snap connection, screw connection, mortise and tenon connection, etc. In this embodiment, the connecting means can be screw connection. Screw connection is easy to install and disassemble two connected components, and can be disassembled and assembled multiple times without losing its function.

[0045] For example Figure 7 As shown, in some embodiments, the outer ring burner head 1210 is provided with a first connecting portion 1216, and the inner ring burner head 1220 is provided with a second connecting portion 1223. The first connecting portion 1216 has a first connecting hole, and the second connecting portion has a second connecting hole. A screw passes through the first connecting hole and the second connecting hole to tightly connect the first connecting portion 1216 and the second connecting portion 1223, that is, to connect and fix the outer ring burner head 1210 and the inner ring burner head 1220.

[0046] Combined Figure 5 、 Figure 6 and Figure 7As shown, in some embodiments, a first gap 1230 is provided between the outer ring burner head 1210 and the inner ring burner head 1220, which makes it more convenient for the assembly between the outer ring burner head 1210 and the inner ring burner head 1220. Especially when the outer ring burner head 1210 and the inner ring burner head 1220 are designed to be detachably connected, the existence of the first gap 1230 makes it easier to disassemble and assemble the outer ring burner head 1210 and the inner ring burner head 1220, and it is not easy for them to scratch each other during the disassembly and assembly process. In addition, by providing the first gap 1230, secondary air can pass through the first gap 1230 from bottom to top and be supplemented to the flame, which is beneficial to the full combustion of the gas.

[0047] For example, the outer ring burner head 1210 is provided with a first connecting portion 1216 protruding towards the inner ring burner head 1220, and the inner ring burner head 1220 is provided with a second connecting portion 1223 protruding towards the outer ring burner head 1210. The first connecting portion 1216 has a first connecting hole, and the second connecting portion 1223 has a second connecting hole. When assembling the outer ring burner head 1210 and the inner ring burner head 1220 with each other, the inner ring burner head 1220 is inserted into the space surrounded by the outer ring burner head 1210 (it is necessary to stagger the first connecting portion 1216 and the second connecting portion 1223 during the insertion process), and then the inner ring burner head 1220 is rotated so that the first connecting hole of the first connecting portion 1216 communicates with the second connecting hole of the second connecting portion 1223. Then, screws can be used to fasten the first connecting hole and the second connecting hole to connect and fix the first connecting portion 1216 and the second connecting portion 1223, that is, to realize the connection and fixation of the outer ring burner head 1210 and the inner ring burner head 1220.

[0048] The second aspect of the present application discloses a burner 1000, in combination with Figures 1 to 7As shown in the figure, the burner 1000 includes a burner head 1200. The burner head 1200 includes an outer ring burner head 1210 and an inner ring burner head 1220. The outer ring burner head 1210 surrounds the inner ring burner head 1220. The outer ring burner head 1210 and the inner ring burner head 1220 are separate components and are connected and fixed together by connecting means. In this embodiment, the outer ring burner head 1210 and the inner ring burner head 1220 are designed as separate components. The so-called separate components mean that the outer ring burner head 1210 and the inner ring burner head 1220 are manufactured separately and independently. After the outer ring burner head 1210 and the inner ring burner head 1220 are manufactured, they are connected and fixed by connecting means and assembled together. For example, the outer ring burner head 1210 is integrally manufactured, and the inner ring burner head 1220 is also integrally manufactured. In this way, the outer ring burner head 1210 and the inner ring burner head 1220 form two components, and then the outer ring burner head 1210 and the inner ring burner head 1220 are connected by connecting means, and the outer ring burner head 1210 and the inner ring burner head 1220 can be assembled together. Compared with the solution in the related art where the outer ring burner head 1210 and the inner ring burner head 1220 are integrally cast, the solution in this embodiment by designing the outer ring burner head 1210 and the inner ring burner head 1220 as separate components is beneficial to reducing the manufacturing difficulty, reducing the requirements for the mold, and is especially suitable for the manufacturing of the burner head 1200 with relatively complex structure, with stronger flexibility. It can be understood that the burner head 1200 of the burner 1000 in this embodiment adopts the technical solution of the above embodiment, so it has at least the beneficial effects brought by the technical solution of the above embodiment, and will not be repeated here.

[0049] Combined with Figures 1 to 6 As shown in the figure, the burner 1000 further includes a burner cap 1100, a first ejector tube 1310, a second ejector tube 1320, and a third ejector tube 1330. Through the cooperation of the burner cap 1100, the burner head 1200, the first ejector tube 1310, the second ejector tube 1320, and the third ejector tube 1330, the burner 1000 can form a three-ring flame.

[0050] Specifically, the outer ring burner head 1210 is provided with a first cavity 1214 and a second cavity 1215, while the inner ring burner head 1220 is provided with a third cavity 1222. For example, the outer ring burner head 1210 has a first ring wall 1211, a second ring wall 1212, and a third ring wall 1213. The first ring wall 1211 surrounds the second ring wall 1212, and a first cavity 1214 is provided between the first ring wall 1211 and the second ring wall 1212. The second ring wall 1212 surrounds the third ring wall 1213, and a second cavity 1215 is provided between the second ring wall 1212 and the third ring wall 1213. The inner ring burner head 1220 has a fourth ring wall 1221, and the fourth ring wall 1221 surrounds to form the third cavity 1222.

[0051] The burner cap 1100 is provided with outer ring flame holes 1101, middle ring flame holes 1102 and inner ring flame holes 1103. It can be understood that the so-called outer ring flame holes 1101, middle ring flame holes 1102 and inner ring flame holes 1103 mean that the outer ring flame holes 1101 are farther from the center of the burner cap 1100 than the middle ring flame holes 1102 and the inner ring flame holes 1103, and the inner ring flame holes 1103 are closer to the burner cap 1100 than the middle ring flame holes 1102 and the outer ring flame holes 1101. The middle ring flame holes 1102 are arranged between the outer ring flame holes 1101 and the inner ring flame holes 1103. When observing along the top-down direction, the outer ring flame holes 1101 are more outward, and the inner ring flame holes 1103 are more inward. In this way, the inner ring flame holes 1103, the middle ring flame holes 1102 and the outer ring flame holes 1101 are arranged in sequence in the direction away from the center of the burner cap 1100. For example, the burner cap 1100 is provided with an outer ring burner cap 1110 and an inner ring burner cap 1120. The outer ring burner cap 1110 surrounds the inner ring burner cap 1120. The outer ring burner cap 1110 is provided with outer ring flame holes 1101 and middle ring flame holes 1102, and the inner ring burner cap 1120 is provided with inner ring flame holes 1103. It can be understood that the structural forms of the outer ring flame holes 1101, the middle ring flame holes 1102 and the inner ring flame holes 1103 are various. They can be in the form of annular slits, or multiple (at least two) independent hole structures arranged in a ring shape.

[0052] When the burner cap 1100 is covered on the burner head 1200 (the outer ring burner cap 1110 is covered on the outer ring burner head 1210, and the inner ring burner cap 1120 is covered on the inner ring burner head 1220), the outer ring flame holes 1101 are communicated with the first cavity 1214, the middle ring flame holes 1102 are communicated with the second cavity 1215, and the inner ring flame holes 1103 are communicated with the third cavity 1222. The first cavity 1214 receives gas and makes the gas spray out from the outer ring flame holes 1101 and be ignited. The second cavity 1215 receives gas and makes the gas spray out from the middle ring flame holes 1102 and be ignited. The third cavity 1222 receives gas and makes the gas spray out from the inner ring flame holes 1103 and be ignited. In this way, the burner 1000 forms a three-ring flame (the flame formed by the outer ring flame holes 1101 and the flame formed by the middle ring flame holes 1102 are called the outer ring flame, and the flame formed by the inner ring flame holes 1103 is called the inner ring flame).

[0053] The first cavity 1214, the second cavity 1215 and the third cavity 1222 receive gas respectively through the first ejector tube 1310, the second ejector tube 1320 and the third ejector tube 1330. The corresponding gas is transmitted along the first ejector tube 1310, the second ejector tube 1320 and the third ejector tube 1330 to enter the corresponding first cavity 1214, second cavity 1215 and third cavity 1222.

[0054] Combined with Figure 5 、 Figure 6 and Figure 7As shown, in some embodiments, the first ejector tube 1310 and the outer ring burner head 1210 are separate components and are connected and fixed to each other, so that the first ejector tube 1310 is in communication with the first cavity 1214. That is, the first ejector tube 1310 is separately manufactured relative to the outer ring burner head 1210 and then connected and fixed to the outer ring burner head 1210. Generally speaking, in order to improve the ejector performance of the first ejector tube 1310, the structure of the first ejector tube 1310 needs to be designed with a large size at both ends and a small size in the middle. In this embodiment, the first ejector tube 1310 is designed as a separate component, and the first ejector tube 1310 can easily form a structure with a large size at both ends and a small size in the middle on the basis of integral molding. Similarly, the second ejector tube 1320 and the outer ring burner head 1210 are separate components and are connected and fixed to each other, and the third ejector tube 1330 and the inner ring burner head 1220 are separate components and are connected and fixed to each other. Further, the first ejector tube 1310 and the second ejector tube 1320 can be designed to be integrally formed to avoid excessive number of components.

[0055] Further, the first ejector tube 1310 is used to transport gas and entrained air, the second ejector tube 1320 is used to transport gas and blast air, and the third ejector tube 1330 is used to transport gas and entrained air.

[0056] Specifically, taking a gas stove as an example, the gas and the entrained air enter the first cavity 1214 along the first ejector tube 1310, and then are ejected from the outer ring flame holes 1101 and ignited to form a flame. The gas supply can come from bottled liquefied gas or pipeline natural gas. The gas stove includes a valve body. After the valve body is opened, the gas is transported along the gas pipeline. The gas flows through the valve body and is ejected through a nozzle. The nozzle is aligned with the intake end of the first ejector tube 1310. During the process of the gas being ejected into the first ejector tube 1310, the entrainment of the surrounding ambient air is synchronously realized. That is, a negative pressure is formed in the surrounding environment during the process of the gas being ejected into the first ejector tube 1310, so that the air in the surrounding environment is synchronously entrained into the first ejector tube 1310 along with the ejection of the gas (the air that enters the first ejector tube 1310 through the entrainment action is called entrained air, and the entrained air is primary air). The gas and the entrained air then enter the first cavity 1214 and are then ejected from the outer ring flame holes 1101.

[0057] Similarly, the fuel gas and the entrained air enter the third cavity 1222 along the third entrainment pipe 1330, and then are ejected from the inner ring flame holes 1103 and ignited to form a flame. The fuel gas supply can come from bottled liquefied gas or pipeline natural gas. The gas stove includes a valve body. After the valve body is opened, the fuel gas is transmitted along the gas pipeline. The fuel gas flows through the valve body and is ejected through a nozzle. The nozzle is aligned with the intake end of the third entrainment pipe 1330. During the process of the fuel gas being ejected into the third entrainment pipe 1330, the entrainment of the ambient air is synchronously achieved, that is, a negative pressure is formed on the surrounding environment during the process of the fuel gas being ejected into the third entrainment pipe 1330, so that the air in the surrounding environment is synchronously entrained into the third entrainment pipe 1330 along with the ejection of the fuel gas. (The air that enters the third entrainment pipe 1330 through the entrainment action is called entrained air, and the entrained air is primary air). The fuel gas and the entrained air then enter the third cavity 1222, and then are ejected from the inner ring flame holes 1103.

[0058] The fuel gas and the blast air enter the second cavity 1215 along the second entrainment pipe 1320, and then are ejected from the middle ring flame holes 1102 and ignited to form a flame. The fuel gas supply can come from bottled liquefied gas or pipeline natural gas. The gas stove includes a valve body. After the valve body is opened, the fuel gas is transmitted along the gas pipeline. The fuel gas flows through the valve body and is ejected through a nozzle. The nozzle is aligned with the intake end of the second entrainment pipe 1320. During the process of the fuel gas being ejected into the second entrainment pipe 1320, the blast air is provided. The blast air is generated by a fluid machine, for example, the blast air is provided by forced blowing of a blower. The blast air enters the second entrainment pipe 1320. The fuel gas and the blast air then enter the second cavity 1215 (the blast air is primary air), and then are ejected from the middle ring flame holes 1102.

[0059] Compared with the entrained air, the blast air can provide more oxygen, so that the fuel gas ejected from the middle ring flame holes 1102 is in a state of rich-oxygen combustion, thus enabling the full combustion of the fuel gas ejected from the middle ring flame holes 1102. (The flame generated by the middle ring flame holes 1102 can still entrain the secondary air in the surrounding environment to participate in combustion).

[0060] When the entrained air ejected from the outer ring flame holes 1101 is insufficient to support the combustion of the gas ejected from the outer ring flame holes 1101, secondary air needs to be supplemented. Since the air ejected from the middle ring flame holes 1102 is blast air, the blast air ejected from the middle ring flame holes 1102 can provide sufficient oxygen, so that in addition to participating in the combustion of the gas ejected from the middle ring flame holes 1102, the blast air ejected from the middle ring flame holes 1102 can also provide excess oxygen to supplement the gas ejected from the outer ring flame holes 1101, assisting the combustion of the gas ejected from the outer ring flame holes 1101. Compared with supplementing secondary air from the surrounding environment by entrainment, the excess oxygen provided by the blast air ejected from the middle ring flame holes 1102 is more actively supplemented into the gas ejected from the outer ring flame holes 1101. By such setting, the gas ejected from the outer ring flame holes 1101 burns sufficiently (in this case, the flame generated by the outer ring flame holes 1101 can still entrain the secondary air in the surrounding environment to participate in combustion).

[0061] When the entrained air ejected from the inner ring flame holes 1103 is insufficient to support the combustion of the gas ejected from the inner ring flame holes 1103, secondary air needs to be supplemented. Since the air ejected from the middle ring flame holes 1102 is blast air, the blast air ejected from the middle ring flame holes 1102 can provide sufficient oxygen, so that in addition to participating in the combustion of the gas ejected from the middle ring flame holes 1102, the blast air ejected from the middle ring flame holes 1102 can also provide excess oxygen to supplement the gas ejected from the inner ring flame holes 1103, assisting the combustion of the gas ejected from the inner ring flame holes 1103. Compared with supplementing secondary air from the surrounding environment by entrainment, the excess oxygen provided by the blast air ejected from the middle ring flame holes 1102 is more actively supplemented into the gas ejected from the inner ring flame holes 1103. By such setting, the gas ejected from the inner ring flame holes 1103 burns sufficiently (in this case, the flame generated by the inner ring flame holes 1103 can still entrain the secondary air in the surrounding environment to participate in combustion).

[0062] When the inner ring burner cap 1120 is made of a porous ceramic plate, the inner ring burner cap 1120 forms infrared combustion (constituting an infrared combustion burner cap), which is beneficial to achieving minimum fire combustion, and its flame hole heat intensity is small, enabling full premixed combustion, reducing the demand for secondary air, and even eliminating the need to supplement secondary air (that is, neither entraining the air in the surrounding environment nor requiring the excess oxygen ejected from the middle ring flame holes 1102). The porous ceramic plate is mainly prepared from infrared ceramic materials.

[0063] The third aspect of the present application discloses a gas stove, which includes the above-mentioned burner 1000. It can be understood that the burner 1000 of the gas stove in this embodiment adopts the technical solution of the above-mentioned embodiment, so it has at least the beneficial effects brought by the technical solution of the above-mentioned embodiment, and will not be repeated here.

[0064] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the concept of the present application by using the content of the specification and drawings of the present application, or any direct / indirect application in other related technical fields shall be included in the patent protection scope of the present application.

Claims

1. A burner head (1200), characterized in that, Comprising: An inner ring burner head (1220); And An outer ring burner head (1210) surrounding the inner ring burner head (1220), the outer ring burner head (1210) and the inner ring burner head (1220) being separate components and adapted to be connected and fixed by connecting means.

2. The burner head (1200) according to claim 1, characterized in that, The outer ring burner head (1210) and the inner ring burner head (1220) are adapted to be detachably connected by the connecting means.

3. The burner head (1200) according to claim 2, characterized in that, The connecting means is a screw connection.

4. The burner head (1200) according to claim 1, characterized in that, A first gap (1230) is formed between the outer ring burner head (1210) and the inner ring burner head (1220).

5. The burner head (1200) according to claim 4, characterized in that, The outer ring burner head (1210) is provided with a first connecting portion (1216) protruding towards the inner ring burner head (1220), and the inner ring burner head (1220) is provided with a second connecting portion (1223) protruding towards the outer ring burner head (1210), the first connecting portion (1216) and the second connecting portion (1223) being adapted to be connected and fixed by the connecting means.

6. The burner head (1200) according to claim 1, characterized in that, The outer ring burner head (1210) is provided with a first cavity (1214) and a second cavity (1215), and the inner ring burner head (1220) is provided with a third cavity (1222).

7. A burner (1000), characterized in that, Comprising the burner head (1200) according to any one of claims 1 to 6.

8. The burner (1000) according to claim 7, characterized in that, The burner (1000) further comprises: A burner cap (1100) covering the burner head (1200), the burner cap (1100) being provided with outer ring flame holes (1101), middle ring flame holes (1102) and inner ring flame holes (1103), the outer ring flame holes (1101) communicating with the first cavity (1214) of the burner head (1200), the middle ring flame holes (1102) communicating with the second cavity (1215) of the burner head (1200), and the inner ring flame holes (1103) communicating with the third cavity (1222) of the burner head (1200); A first ejector tube (1310) communicating with the first cavity (1214) of the outer ring burner head (1210); A second ejector tube (1320) communicating with the second cavity (1215) of the outer ring burner head (1210); and A third ejector tube (1330) communicating with the third cavity (1222) of the outer ring burner head (1210).

9. The burner (1000) according to claim 8, characterized in that, The first ejector tube (1310) and the outer ring burner head (1210) are separate components and are connected and fixed to each other; And / or, the second ejector tube (1320) and the outer ring burner head (1210) are separate components and are connected and fixed to each other; And / or, the third ejector tube (1330) and the inner ring burner head (1220) are separate components and are connected and fixed to each other.

10. The burner (1000) according to claim 8, characterized in that, The first ejector tube (1310) is adapted to transport induced air and gas, the second ejector tube (1320) is adapted to transport blast air and gas, and the third ejector tube (1330) is adapted to transport induced air and gas.

11. A gas stove, characterized in that, Comprising the burner (1000) according to any one of claims 7 to 10.

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