Combustor and gas stove

Abstract

The application belongs to the technical field of electrical appliances, and particularly relates to a burner and a gas stove. The burner comprises a gas distribution member, an inner ring fire cover and an outer ring fire cover. The gas distribution member is provided with a flow guide groove, a gas passage and a ventilation cavity. One end of the ventilation cavity and a gas outlet end of the gas passage are communicated. The flow guide groove is communicated between the gas passage and the ventilation cavity. The inner ring fire cover is arranged on the gas distribution member. A gas mixing cavity of the inner ring fire cover is communicated with the gas outlet end of the gas passage. The outer ring fire cover is arranged on the gas distribution member. A gas mixing cavity of the outer ring fire cover is communicated with the other end of the ventilation cavity. The application can help the gas flow to the gas mixing cavity of the outer ring fire cover, thereby reducing the load of the inner ring fire cover, balancing the gas inlet amount of the inner ring fire cover and the outer ring fire cover, making the combustion more sufficient, reducing the CO emission amount, and having good practicability.

Description

Technical Field

[0001] This application belongs to the field of electrical technology, specifically relating to a burner and a gas stove. Background Technology

[0002] Burners are divided into top-inlet burners and bottom-inlet burners. The ejector capability of top-inlet burners is inferior to that of traditional bottom-inlet structures. For top-inlet burners with a single nozzle, it is difficult to distribute the gas flowing through the inner and outer burner caps. Furthermore, the gas exiting the nozzle preferentially passes through the inner burner cap, resulting in excessive air intake for the inner burner cap and insufficient air intake for the outer burner cap, leading to incomplete combustion and increased CO emissions. Summary of the Invention

[0003] To address the aforementioned technical problems, this application provides a burner and a gas stove, aiming to at least partially solve the technical problems in the prior art where the inner ring burner has excessive air intake, the outer ring burner has insufficient air intake, resulting in incomplete combustion and increased CO emissions.

[0004] The technical solution of this application is as follows:

[0005] On the one hand, this application provides a burner, characterized in that the burner includes:

[0006] The gas distributor is provided with a guide groove, a gas passage and a ventilation chamber. One end of the ventilation chamber is connected to the gas outlet end of the gas passage, and the guide groove is connected between the gas passage and the ventilation chamber.

[0007] An inner ring burner cap is disposed on the gas distributor, and the mixing chamber of the inner ring burner cap is connected to the gas outlet end of the gas passage.

[0008] An outer ring flame cap is disposed on the gas distributor, and the mixing chamber of the outer ring flame cap is connected to the other end of the ventilation chamber.

[0009] The burner provided in this application includes a gas distribution component comprising a gas passage and a ventilation chamber. The mixing chamber of the inner ring burner is connected to the outlet end of the gas passage, and one end of the ventilation chamber is connected to the outlet end of the gas passage. The mixing chamber of the outer ring burner is connected to the other end of the ventilation chamber. Therefore, gas can be transported through the gas passage. Part of the transported gas is first transported to the mixing chamber of the inner ring burner for combustion, and the other part is transported through the ventilation chamber to the mixing chamber of the outer ring burner for combustion. Since the guide groove of the gas distribution component is connected between the gas passage and the ventilation chamber, the volume of the ventilation chamber can be increased, the outlet pressure of the ventilation chamber can be reduced, and the injection force can be increased to a certain extent to facilitate the flow of gas to the mixing chamber of the outer ring burner. This reduces the load on the inner ring burner, balances the gas intake of the inner and outer ring burners, and makes combustion more complete, thereby reducing CO emissions. It has good practicality.

[0010] In some embodiments, the gas distributor includes:

[0011] The inner ring air intake section has a gas passage arranged along the axial direction. The outer circumferential surface of the inner ring air intake section is provided with a plurality of guide grooves at intervals. One end of the gas passage is the air intake end, which is connected to the burner head. The burner head can supply gas mixed with oil and primary air to the gas passage and discharge it from the other end of the gas passage.

[0012] As a preferred embodiment of this application, the ratio of the inner diameter of the annular region where the plurality of guide grooves are located to the diameter of the gas passage is greater than or equal to 1.5:1, so as to ensure a better ejection effect.

[0013] In some embodiments, the inner ring intake includes:

[0014] A first cylinder, wherein the first cylinder is provided with a through gas passage along the axial direction;

[0015] The second cylinder is connected to the outer peripheral surface of the first cylinder. The top height of the second cylinder is lower than the top height of the first cylinder. The guide groove extends from the top of the first cylinder to the middle of the outer peripheral surface of the second cylinder.

[0016] In some embodiments, the top of the first cylinder has a guide surface corresponding to the guide groove. The top of the guide surface extends to the middle of the top of the first cylinder, and the bottom of the guide surface extends to the top of the corresponding guide groove. The guide surface can help to eject the gas.

[0017] In some embodiments, the inner ring intake further includes:

[0018] A transition cylinder is connected between the outer peripheral surface of the first cylinder and the top of the second cylinder, and the height of the top of the transition cylinder gradually decreases from the inside to the outside.

[0019] In some embodiments, the mixing chamber gap of the inner ring burner is located above the top of the inner ring air inlet. The inner ring burner and the outer ring burner are connected by multiple ventilation chambers. Each ventilation chamber is provided with a ventilation chamber. The guide groove is correspondingly provided with the ventilation chamber. The guide groove is located in the ventilation chamber of the corresponding ventilation chamber.

[0020] In some embodiments, the gas distributor further includes:

[0021] Multiple support plates are spaced apart on the outer side of the circumference of the inner ring air intake. The bottom of each air vent is open, and the bottom of each air vent is sealed by the corresponding support plate. The air vent and the corresponding support plate form an air vent with open ends.

[0022] In some embodiments, the gas distributor further includes:

[0023] A surround plate is connected to the outer side of the circumferential surface of the inner ring air intake. A plurality of support plates are spaced apart on the circumferential surface of the surround plate. The inner ring burner cap is supported on the surround plate to realize the assembly of the inner ring burner cap on the air distribution component.

[0024] In some implementations, the mixing chamber of the outer ring burner is connected to a plurality of the support plates to enable the outer ring burner to be assembled on the gas distributor.

[0025] In some embodiments, the outer side wall of the inner ring burner is provided with a plurality of first vents at intervals; the inner side wall of the outer ring burner is provided with a plurality of second vents at intervals. Secondary air can enter the mixing chamber of the inner ring burner through the plurality of first vents for combustion of the inner ring burner, and enter the mixing chamber of the outer ring burner through the plurality of second vents for combustion of the outer ring burner.

[0026] On the other hand, this application also provides a gas stove, which is special in that the gas stove includes the above-mentioned burner.

[0027] Gas stoves equipped with the aforementioned burners facilitate the flow of gas to the mixing chamber of the outer ring burner, thereby reducing the load on the inner ring burner. This balances the gas intake of the inner and outer ring burners, resulting in more complete combustion and reduced CO emissions, making them highly practical. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] In the attached image:

[0030] Figure 1 This is a schematic diagram of the burner structure according to an embodiment of this application;

[0031] Figure 2 for Figure 1 An explosion diagram;

[0032] Figure 3 for Figure 1 A top-down view;

[0033] Figure 4 for Figure 3 A schematic diagram of the AA cross-section;

[0034] Figure 5 for Figure 1 A schematic diagram of the structure of the gas distribution component in the middle;

[0035] Figure 6 for Figure 5 Another structural diagram;

[0036] Figure 7 for Figure 1 The diagram shows the structure of the outer and inner ring flame caps.

[0037] Gas distributor-100, guide groove-101, gas passage-102, ventilation chamber-103, inner ring air inlet-104, first cylinder-105, second cylinder-106, first side wall-107, second side wall-108, bottom wall-109, guide section-110, transition cylinder-111, surrounding plate-112, first connecting hole-113, connecting rib plate-114, support plate-115, ear plate-116, second connecting hole-117, inner ring burner cap-200, inner ring cover plate-201, first vent-202, outer ring burner cap-300, second vent-301, outer ring cover plate-302, ventilation chamber-500, second connecting column-400. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0039] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0040] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0041] This application is described below with reference to the accompanying drawings and specific embodiments:

[0042] In related technologies, in the single-nozzle top-intake burner of a gas stove, the nozzle of the gas distributor is connected to the injector pipe of the burner head. Gas mixed with primary air is injected through the injector pipe to the nozzle. A portion of the delivered gas is first sent to the mixing chamber of the inner ring burner for combustion, and the other portion is sent to the mixing chamber of the outer ring burner for combustion. The gas flowing through the inner and outer burners is difficult to distribute, and the nozzle outlet gas preferentially passes through the inner ring burner, resulting in excessive air intake to the inner ring burner and insufficient air intake to the outer ring burner, leading to incomplete combustion and increased CO emissions.

[0043] This application provides a burner and a gas stove, which aims to at least partially solve the technical problems in the prior art where the inner ring burner has too much air intake and the outer ring burner has too little air intake, resulting in incomplete combustion and increased CO emissions.

[0044] Figure 1 This is a schematic diagram of the burner structure according to an embodiment of this application. Figure 2 for Figure 1 An explosion diagram. Figure 3 for Figure 1 A top-down view. Figure 4 for Figure 3A schematic diagram of the AA cross section, combined with Figures 1-4 The burner in this embodiment includes a gas distribution component 100, an inner ring burner cap 200, and an outer ring burner cap 300.

[0045] Combination Figures 1-4 In this embodiment of the application, the gas distributor 100 is provided with a guide groove 101, a gas passage 102 and a ventilation chamber 103. One end of the ventilation chamber 103 is connected to the gas outlet end of the gas passage 102. The guide groove 101 is connected between the gas passage 102 and the ventilation chamber 103. The inner ring burner cap 200 and the outer ring burner cap 300 are both provided on the gas distributor 100. The mixing chamber of the inner ring burner cap 200 is connected to the gas outlet end of the gas passage 102, and the mixing chamber of the outer ring burner cap 300 is connected to the other end of the ventilation chamber 103.

[0046] The burner provided in this application embodiment includes a gas distribution component 100 comprising a gas passage 102 and a ventilation chamber 103. The mixing chamber of the inner ring burner cap 200 is connected to the outlet end of the gas passage 102, and one end of the ventilation chamber 103 is connected to the outlet end of the gas passage 102. The mixing chamber of the outer ring burner cap 300 is connected to the other end of the ventilation chamber 103. Therefore, gas can be transported through the gas passage 102. A portion of the transported gas is first transported to the mixing chamber of the inner ring burner cap 200 for combustion, and the other portion... The gas is supplied to the mixing chamber of the outer ring burner 300 through the venting chamber 103 for combustion in the outer ring burner 300. Since the guide groove 101 of the gas distributor 100 is connected between the gas passage 102 and the venting chamber 103, the volume of the venting chamber 103 can be increased, the outlet pressure of the venting chamber 103 can be reduced, and the injection force can be increased to a certain extent, which helps the gas flow to the mixing chamber of the outer ring burner 300. This reduces the load on the inner ring burner 200, balances the gas intake of the inner ring burner 200 and the outer ring burner 300, and makes the combustion more complete, thereby reducing CO emissions. It has good practicality.

[0047] Figure 5 This is a schematic diagram of the air distribution component according to an embodiment of this application. (In conjunction with...) Figure 3 , Figure 4 as well as Figure 5 The gas distribution component 100 in this embodiment includes an inner ring air inlet 104, which is the aforementioned nozzle. The inner ring air inlet 104 is provided with a gas passage 102 along the axial direction. One end of the gas passage 102 is an air inlet end, which is connected to the injector tube of the burner head. Gas mixed with primary air can be delivered to the gas passage 102 through the injector tube of the burner head and discharged from the other end of the gas passage 102.

[0048] Combination Figure 5In this embodiment, the outer peripheral surface of the inner ring air intake 104 is provided with a plurality of the aforementioned guide grooves 101 at intervals. Preferably, there are four or more guide grooves 101 in this embodiment, and the four or more guide grooves 101 are preferably arranged at equal intervals along the outer peripheral surface of the inner ring air intake 104 to ensure a suitable injection force, so as to balance the air intake of the inner ring burner cap 200 and the outer ring burner cap 300, and make the combustion more complete.

[0049] Furthermore, in this embodiment, the ratio of the inner diameter of the annular region where each guide groove 101 is located to the diameter of the gas passage 102 is greater than or equal to 1.5:1. The size of the guide groove 101 is related to the gas flow rate of the gas passage 102. The larger the gas flow rate, the larger the passage is required, that is, the larger the guide groove 101 is required. This ensures that sufficient mixed gas flows through the guide groove 101. Therefore, this application sets the ratio of the inner diameter of the annular region where each guide groove 101 is located to the diameter of the gas passage 102 to be greater than or equal to 1.5:1 to ensure the amount of gas flowing through the guide groove 101, so as to facilitate uniform mixing and ensure a better ejection effect.

[0050] Combination Figure 2 , Figure 4 as well as Figure 5 The inner ring air intake 104 of this application embodiment includes a first cylinder 105 and a second cylinder 106. The first cylinder 105 is provided with a through gas passage 102 along the axial direction. The second cylinder 106 is connected to the outer peripheral surface of the first cylinder 105. The top height of the second cylinder 106 is lower than the top height of the first cylinder 105. The guide groove 101 is opened from the top of the first cylinder 105 to the middle of the outer peripheral surface of the second cylinder 106.

[0051] Furthermore, combined Figure 2 , Figure 4 as well as Figure 5 In this embodiment of the application, the guide channel 101 includes a first sidewall 107, two second sidewalls 108 and a bottom wall 109. The two second sidewalls 108 are opened opposite each other from the top of the inner ring air intake 104 to the middle of the outer peripheral surface of the inner ring air intake 104 along the axial direction of the inner ring air intake 104. The first sidewall 107 is the bottom of the two second sidewalls 108, and the bottom wall 109 is the part between the two second sidewalls 108 on the peripheral surface of the inner ring air intake 104. That is, the guide channel 101 is a shape with a top and an external opening formed by the first sidewall 107, the two second sidewalls 108 and the bottom wall 109.

[0052] Combination Figure 2 , Figure 4 as well as Figure 5The top of the first cylinder 105 is provided with a guide surface 110 corresponding to the guide groove 101. The top of the guide surface 110 extends to the middle of the top of the first cylinder 105, and the bottom of the guide surface 110 extends to the top of the corresponding guide groove 101. The setting of the guide surface 110 can reduce the resistance of the gas flow to the mixing chamber of the outer ring flame cap 300, and is more conducive to the injection of gas.

[0053] Combination Figure 2 as well as Figure 5 In this embodiment of the application, the guide surface 110 can be correspondingly set with the guide groove 101. The guide surface 110 is set on the upper part of the corresponding guide groove 101, so that the gas can enter the guide groove 101 through the guide surface 110, thereby further reducing the resistance of the gas flow to the mixing chamber of the outer ring flame cap 300, and further facilitating the injection of the gas.

[0054] Furthermore, Figure 2 , Figure 4 Combination Figure 5 The inner ring air intake 104 may also include a transition cylinder 111, which is connected between the outer peripheral surface of the first cylinder 105 and the top of the second cylinder 106. The height of the top of the transition cylinder 111 gradually decreases from the inside to the outside, and the tops of the multiple guide grooves 101 are spaced apart on the transition cylinder 111.

[0055] Combination Figure 4 In this embodiment, the mixing chamber gap of the inner ring burner cap 200 is located above the top of the inner ring air intake 104. The gas flowing out from the gas outlet end of the gas passage 102 of the inner ring air intake 104 can be partially distributed and injected into the mixing chamber of the inner ring burner cap 200, and the other part can flow out through the gap between the mixing chamber of the inner ring burner cap 200 and the top of the inner ring air intake 104.

[0056] Furthermore, combined Figure 2 , Figure 4 as well as Figure 5 The gas distribution component 100 in this application embodiment also includes a surrounding plate 112, which is connected to the outer periphery of the inner ring air intake 104. The inner ring burner cap 200 can be supported on the surrounding plate 112 by a plurality of spaced first connecting posts to realize the assembly of the inner ring burner cap 200 on the gas distribution component 100.

[0057] In this embodiment, the enclosure 112 can be integrally formed on the outer circumferential surface of the second cylinder 106 of the inner ring air intake 104, and the first connecting post can be integrally formed on the bottom of the inner ring fire cap 200. The bottom of the first connecting post can be connected to the first connecting hole 113 opened in the enclosure 112.

[0058] Furthermore, Figure 6 for Figure 5Another structural diagram, combined with Figure 1 , Figure 2 , Figure 4 , Figure 5 as well as Figure 6 The bottom of the first cylinder 105 of the inner ring air intake 104 protrudes from the surrounding plate 112 for connection with the injector tube of the burner head. The top of the second cylinder 106 and the top of the first cylinder 105 can be integrally formed. The bottom of the second cylinder 106 can be hollowed out between the bottom of the first cylinder 105 and the bottom of the second cylinder 106. The inner circumferential surface of the second cylinder 106 and the outer circumferential surface of the first cylinder 105 can be connected by multiple radially arranged connecting ribs 114. The bottom wall 109 of the guide groove 101 can protrude from the inner side of the second cylinder 106 and extend to the outer circumferential surface of the first cylinder 105. This can increase the space of the guide groove 101 and further facilitate the injection of gas.

[0059] Figure 7 for Figure 1 The structural diagrams of the outer and inner ring flame caps are shown in the image. Figure 2 , Figure 4 , Figure 5 as well as Figure 7 The inner ring burner cap 200 and the outer ring burner cap 300 are connected by multiple ventilation cavities 500. Each ventilation cavity 500 is provided with the aforementioned ventilation cavity 103. The guide groove 101 is correspondingly provided with the ventilation cavity 500, and the guide groove 101 is provided in the ventilation cavity 103 of the corresponding ventilation cavity 500. Another portion of the gas flowing out from the outlet end of the gas passage 102 of the inner ring intake section 104 can be injected into the mixing chamber of the outer ring burner 300 through the ventilation chambers 103 of the multiple ventilation chambers 500. Since the guide groove 101 is set in the corresponding ventilation chamber 103 of the ventilation chamber 500, the volume of the ventilation chamber 103 can be increased and the outlet pressure of the ventilation chamber 103 can be reduced. This can increase the injection force to a certain extent, so as to help the gas flow to the mixing chamber of the outer ring burner 300, thereby reducing the load on the inner ring burner 200, so as to balance the gas intake of the inner ring burner 200 and the outer ring burner 300, making the combustion more complete and reducing CO emissions.

[0060] Combination Figure 2 , Figure 4 , Figure 5 as well as Figure 7 The air distribution component 100 in this embodiment of the application also includes a plurality of support plates 115, which are spaced apart on the periphery of the surrounding plate 112. The bottom of each air vent 500 is open and the bottom of each air vent 500 is sealed by the corresponding support plate 115. The air vent 500 and the corresponding support plate 115 form an air vent 103 with open ends.

[0061] In this embodiment, the support plate 115 needs to have a certain thickness, and the bottom of each ventilation cavity 500 is fixed on both sides of the width direction of the corresponding support plate 115 to improve the sealing of the connection between the bottom of the ventilation cavity 500 and the corresponding support plate 115.

[0062] Furthermore, combined Figure 2 , Figure 4 , Figure 5 as well as Figure 7 In this embodiment of the application, ear plates 116 are provided on both sides of the outer end of each support plate 115 in the width direction. The bottom of the mixing chamber of the outer ring flame cap 300 can be fixed to the ear plates 116 by the second connecting post 400 to realize the assembly of the outer ring flame cap 300 on the gas distribution component 100.

[0063] Specifically, the top of the second connecting post 400 can be integrally formed and connected to the bottom of the mixing chamber of the outer ring flame cap 300, and the second connecting post 400 can be connected to the second connecting hole 117 provided on the ear plate 116.

[0064] In this embodiment, the ear plates 116, support plates 115, surrounding plates 112, and inner ring air intake of the air distribution component 100 can be integrally formed so that the air distribution component 100 has sufficient strength and improves the reliability of use.

[0065] Combination Figure 7 In this embodiment, the outer wall of the inner ring burner cap 200 is provided with a plurality of first vents 202 at intervals. Secondary air can enter the mixing chamber of the inner ring burner cap through the plurality of first vents 202 for combustion of the inner ring burner cap 200. The inner wall of the outer ring burner cap 300 is provided with a plurality of second vents 301 at intervals. Secondary air can enter the mixing chamber of the outer ring burner cap 300 through the plurality of second vents 301 for combustion of the outer ring burner cap 300, thereby further improving the combustion efficiency of the burner. In addition, the outer walls of both the outer ring burner cap 300 and the inner ring burner cap 200 are provided with a plurality of flame holes at intervals for forming a flame.

[0066] In addition, combined Figure 1 , Figure 2 as well as Figure 7 In this embodiment of the application, the inner ring burner cap 200 also includes an inner ring cover plate, which is detachably disposed on the top of the inner ring burner cap 200 and located above the gas passage 101 to block the gas discharged from the gas outlet end of the gas passage 101, so that the gas flows to the flame holes of the inner and outer burner caps 200 and the ventilation chamber 103. The outer ring burner cap 300 also includes an outer ring cover plate 302, which is detachably disposed on the top of the outer ring burner cap 300, so that the gas flows to the flame holes of the outer ring burner cap 300 to facilitate the use of the burner.

[0067] Furthermore, combined Figure 1 , Figure 2 as well as Figure 7 In this embodiment, multiple first vents 202 can be disposed on the top of the inner sidewall of the inner ring burner cap 200, i.e., the top opening of the first vent 202. When the inner ring cover plate 201 covers the top of the inner ring burner cap 200, the top opening of the first vent 202 can be sealed, so that the first vent 202 forms an air intake channel that runs radially through the inner ring burner cap 200. Similarly, the second vent 301 can be disposed on the top of the inner sidewall of the outer ring burner cap 300, i.e., the top opening of the second vent 301. When the outer ring cover plate 302 covers the top of the outer ring burner cap 300, the top opening of the second vent 301 can be sealed, so that the second vent 301 forms an air intake channel that runs radially through the outer ring burner cap 300.

[0068] It should be noted that, in this embodiment of the application, the inner ring flame cap 200 and the outer ring flame cap 300 are connected by multiple ventilation cavities 500, and the three can be integrally formed to improve the reliability of use.

[0069] Based on the above-mentioned burner, this application embodiment also provides a gas stove, which includes the above-mentioned burner. The gas stove with the above-mentioned burner helps the gas flow to the mixing chamber of the outer ring burner 300, thereby reducing the load on the inner ring burner 200, so as to balance the gas intake of the inner ring burner 200 and the outer ring burner 300, making the combustion more complete, thereby reducing CO emissions, and has good practicality.

[0070] Furthermore, the gas stove in this embodiment of the application also includes a burner head, the injector tube of the burner head is connected to the gas inlet end of the gas passage 102 of the burner, so that gas mixed with primary air can be delivered to the gas passage 102 through the injector tube of the burner head. This is the prior art, and will not be described in detail in this embodiment of the application.

[0071] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0072] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0073] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0074] In the description of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0076] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0077] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A burner, characterized by The burner comprises: a gas distribution member provided with a flow guide groove, a gas passage and a gas passage cavity, one end of the gas passage cavity being communicated with the gas passage outlet end, the flow guide groove being communicated between the gas passage and the gas passage cavity; an inner ring fire cover arranged on the gas distribution member, and a gas mixing cavity of the inner ring fire cover being communicated with the gas passage outlet end; an outer ring fire cover arranged on the gas distribution member, and a gas mixing cavity of the outer ring fire cover being communicated with the other end of the gas passage cavity; the gas distribution member comprises: an inner ring gas inlet portion, the inner ring gas inlet portion being provided with the gas passage in the axial direction, and a plurality of the flow guide grooves being arranged on the outer circumferential surface of the inner ring gas inlet portion; the inner ring gas inlet portion comprises: a first cylinder, the first cylinder being provided with the gas passage in the axial direction; a second cylinder connected to the outer circumferential surface of the first cylinder, the top of the second cylinder being lower than the top of the first cylinder, and the flow guide groove being arranged from the top of the first cylinder to the middle of the outer circumferential surface of the second cylinder; the top of the first cylinder is provided with a guide cut surface corresponding to the flow guide groove, the top of the guide cut surface being arranged in the middle of the top of the first cylinder, and the bottom of the guide cut surface being arranged in the top of the corresponding flow guide groove.

2. The burner of claim 1, wherein The ratio of the inner diameter of the annular area where the plurality of flow guide grooves are located to the diameter of the gas passage is greater than or equal to 1.5:

1.

3. The burner of claim 1, wherein the inner ring gas inlet portion further comprises: a transition cylinder connected between the outer circumferential surface of the first cylinder and the top of the second cylinder, the height of the top of the transition cylinder gradually decreasing from inside to outside.

4. Burner according to any of claims 2-3, characterized in that The gas mixing cavity gap of the inner ring fire cover is arranged above the top of the inner ring gas inlet portion, the inner ring fire cover and the outer ring fire cover are connected through a plurality of gas passage bodies, the gas passage cavity is arranged in each of the gas passage bodies, the flow guide groove and the gas passage body are correspondingly arranged, and the flow guide groove is arranged in the gas passage cavity of the corresponding gas passage body.

5. The burner of claim 4, wherein the gas distribution member further comprises: a plurality of support plates arranged on the outer circumferential surface of the inner ring gas inlet portion, the bottom of each gas passage body being open, the bottom of each gas passage body being sealed by the corresponding support plate, and the gas passage body and the corresponding support plate forming the gas passage cavity with both ends open.

6. The burner of claim 5, wherein the gas distribution member further comprises: a surrounding plate connected to the outer circumferential surface of the inner ring gas inlet portion, a plurality of the support plates being arranged on the circumferential surface of the surrounding plate, and the inner ring fire cover being supported on the surrounding plate.

7. The burner of claim 5, wherein The gas mixing cavity of the outer ring fire cover is connected to a plurality of the support plates.

8. Burner according to any of claims 1-3 and 5-7, characterized in that a plurality of first gas passage openings are arranged on the outer side wall of the inner ring fire cover; a plurality of second gas passage openings are arranged on the inner side wall of the outer ring fire cover.

9. A gas hob, characterized in that The gas stove comprises the burner according to any one of claims 1-8.

Images