A gas stove, an updraft burner and a cooking range

Abstract

The present application relates to gas device technical field, disclose a kind of gas burner, upper air inlet burner and cooking utensil.Cooking utensil at least includes one upper air inlet burner, and upper air inlet is arranged around its including gas burner.The gas burner includes outer ring structure, outer ring structure includes inner ring wall and outer ring wall, which are connected at bottom and spaced apart at top, and forms gas passage, along the direction of airflow, gas passage includes in succession communicated injection channel, outer ring mixing chamber and distribution channel, outer ring mixing chamber and distribution channel are arranged along the circumference of outer ring structure, injection channel is arranged below distribution channel, and the volume of outer ring mixing chamber is greater than the volume of injection channel.The gas burner of the present application can mix air and gas more fully, thereby ensuring complete combustion and improving combustion efficiency.The upper air inlet burner and cooking utensil of the present application have complete combustion and high combustion efficiency by setting the above-mentioned gas burner.

Description

Technical Field

[0001] This invention relates to the field of gas appliance technology, and in particular to a gas burner, an upper-inlet burner, and a stove. Background Technology

[0002] Household gas stove burners can be divided into bottom-intake burners and top-intake burners based on their air intake method. Compared with bottom-intake burners, top-intake burners obtain both primary and secondary air from the stove panel, making them safer and more popular with consumers.

[0003] Top-intake burners typically consist of a nozzle seat, a gas burner head, and a flame cap. The nozzle seat contains nozzles that inject gas into the burner head for initial mixing with air. The mixed gas then enters the flame cap for combustion. To increase the burner's heat load, the gas burner head is equipped with two or more injectors (for mixing gas and air), resulting in a large burner head size. Some existing gas burners have shortened the length of the injectors to address this, but this leads to excessively high gas flow rates, preventing sufficient mixing of gas and air, and consequently causing incomplete combustion and low combustion efficiency.

[0004] Therefore, there is an urgent need for a gas burner, an upward-intake burner, and a stove to solve the above-mentioned technical problems. Summary of the Invention

[0005] The first objective of this invention is to provide a gas burner head that enables more thorough mixing of air and gas, thereby ensuring complete combustion and improving combustion efficiency.

[0006] The second objective of this invention is to provide an upward-intake burner that, by setting the aforementioned gas burner head, achieves complete combustion and high combustion efficiency.

[0007] The third objective of this invention is to provide a stove that, by incorporating the aforementioned top-intake burner, achieves high combustion efficiency and saves energy.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] A gas burner head includes an outer ring structure, the outer ring structure comprising an inner ring wall and an outer ring wall connected at the bottom and spaced apart at the top, forming a gas passage;

[0010] Along the airflow direction, the air passage includes an ejector channel, an outer ring mixing chamber, and a distribution channel connected in sequence. The outer ring mixing chamber and the distribution channel are arranged circumferentially along the outer ring structure. The ejector channel is located below the distribution channel. The volume of the outer ring mixing chamber is larger than the volume of the ejector channel.

[0011] As an alternative, the volume of the distribution channel is smaller than the volume of the outer ring mixing chamber.

[0012] As an optional solution, the gas passage further includes a transition passage, which is disposed between the outer ring mixing chamber and the distribution passage, and the flow area of ​​the transition passage gradually decreases.

[0013] As an alternative, the tops of the outer ring mixing chamber, the transition channel, and the distribution channel are flush, the bottom plate of the outer ring mixing chamber is lower than the bottom plate of the distribution channel, and the bottom plate of the transition channel is inclined and connected between the bottom plate of the outer ring mixing chamber and the bottom plate of the distribution channel.

[0014] As an alternative, the outer ring wall corresponding to the outer ring mixing cavity includes a lower outer ring peripheral wall and an upper outer ring peripheral wall connected to each other. The lower outer ring peripheral wall is arranged to expand outward, and the upper outer ring peripheral wall is arranged to contract inward. The upper outer ring peripheral wall is located above the outer ring mixing cavity, and makes the outer ring mixing cavity form a first reflux zone.

[0015] As an optional solution, the gas burner head also includes an inner ring structure, which is disposed on the inner side of the inner ring wall and forms an inner ring mixing chamber. The outer ring mixing chamber is connected to the inner ring mixing chamber through a first channel, and the distribution channel is connected to the inner ring mixing chamber through a second channel.

[0016] As an alternative, the volume of the first channel is larger than the volume of the second channel.

[0017] As an alternative, the bottom plate of the inner ring mixing chamber has a stepped structure and includes a first platform and a second platform, the first platform being lower than the second platform, the bottom plate of the first channel being connected to the first platform, and the bottom plate of the second channel being connected to the second platform.

[0018] As an alternative, the top surface of the first channel is lower than the top surface of the outer annular wall; and / or

[0019] The top surface of the second channel is lower than the top surface of the outer ring wall.

[0020] As an alternative, the outer ring structure includes two air passages, and the outer ring mixing chambers of the two air passages are connected to the inner ring mixing chamber through the same first channel.

[0021] As an optional solution, a flow divider is provided between the two outer ring mixing chambers, which creates a second reflux zone within the outer ring mixing chamber;

[0022] The diversion section is disposed opposite to the first channel and forms two air gaps with the inner ring wall, so that the two air gaps are respectively connected to the corresponding outer ring mixing chamber and the first channel.

[0023] An upper-inlet burner includes an outer ring flame cap, a nozzle seat, and a gas burner head. The nozzle seat is used to inject gas into the ejector channel. The outer ring flame cap is disposed on the outer ring structure and receives the mixed gas from the gas burner head.

[0024] A cooktop, comprising at least one of the aforementioned top-intake burners.

[0025] The beneficial effects of this invention are:

[0026] In use, the gas burner head of this invention allows the gas to undergo initial mixing with air within the ejector channel before entering the outer annular mixing chamber. Because the volume of the outer annular mixing chamber is larger than that of the ejector channel, the flow velocity and kinetic energy of the mixed gas are significantly reduced, resulting in more thorough mixing of the gas and air. This ensures complete combustion and improves combustion efficiency. Finally, a portion of the gas in the outer annular mixing chamber directly enters the burner cap for combustion, while another portion enters the distribution channel before entering the burner cap for combustion. This ensures a more uniform distribution of the mixed gas within the burner cap, further enhancing the completeness of combustion.

[0027] The top-inlet burner of the present invention, by setting the above-mentioned gas burner head, achieves complete combustion and high combustion efficiency.

[0028] The stove of the present invention, by setting the above-mentioned top-intake burner, has high combustion efficiency and saves energy. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the top-inlet burner provided in a specific embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the nozzle seat provided in a specific embodiment of the present invention;

[0031] Figure 3 This is a cross-sectional structural diagram of the top-inlet burner provided in a specific embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the gas burner head provided in a specific embodiment of the present invention from one perspective;

[0033] Figure 5 This is a schematic diagram of the gas burner head provided in a specific embodiment of the present invention from another perspective;

[0034] Figure 6This is a horizontal cross-sectional view of the gas burner head provided in a specific embodiment of the present invention;

[0035] Figure 7 This is a longitudinal sectional view of the gas burner head at the transition channel provided in a specific embodiment of the present invention;

[0036] Figure 8 This is a longitudinal sectional view of the gas burner head at the first and second channels provided in a specific embodiment of the present invention.

[0037] In the picture:

[0038] 10. Gas burner head;

[0039] 1. Outer ring structure; 11. Inner ring wall; 12. Outer ring wall; 121. Lower peripheral wall of outer ring; 122. Upper peripheral wall of outer ring; 13. Ejector channel; 14. Outer ring mixing chamber; 141. First base plate; 142. First reflux zone; 143. Second reflux zone; 15. Distribution channel; 151. Second base plate; 16. Transition channel; 161. Third base plate;

[0040] 2. Inner ring structure; 21. Side peripheral wall; 22. Fourth base plate; 221. First platform; 222. Second platform; 223. Stepped surface; 23. Inner ring mixing cavity;

[0041] 3. First channel; 31. Fifth base plate;

[0042] 4. Second channel; 41. Sixth base plate;

[0043] 5. Flow divider; 6. Air gap;

[0044] 20. Nozzle holder; 201. Base; 202. Air supply channel; 203. Air supply pipeline; 204. Nozzle;

[0045] 30. Outer ring flame cap; 40. Inner ring flame cap. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention and not the entire structure.

[0047] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly 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 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 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.

[0049] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0050] like Figures 1-8 As shown, this embodiment provides a gas burner head, an upward-intake burner, and a cooktop. The cooktop includes at least one upward-intake burner. The specific number of upward-intake burners included in the cooktop can be one, two, or more, and is not limited here. Figures 1-3 As shown, the top-inlet burner includes a nozzle seat 20, a gas burner head 10, an outer ring burner cap 30, and an inner ring burner cap 40. The gas burner head 10 is supported on the nozzle seat 20. The outer ring burner cap 30 and the inner ring burner cap 40 are both installed on the gas burner head 10. The nozzle seat 20 can inject gas into the gas burner head 10. The gas mixes with air in the gas burner head 10 and finally enters the outer ring burner cap 30 and the inner ring burner cap 40 for combustion.

[0051] Specifically, such as Figure 2As shown, the nozzle holder 20 includes a base 201, a gas supply channel 202, a gas supply pipe 203, and a nozzle 204. Both the gas supply channel 202 and the gas supply pipe 203 are formed on or supported on the base 201. One end of the gas supply channel 202 is connected to a gas source, and the other end is connected to the gas supply pipe 203. The nozzle 204 is located at the outlet end of the gas supply pipe 203 and is used to inject gas into the gas burner head 10. Optionally, the base 201 includes two gas supply pipes 203 and two nozzles 204. Both nozzles 204 can inject gas into the gas burner head 10. In other embodiments, the specific number of gas supply pipes 203 and nozzles 204 is not limited.

[0052] like Figure 1 and Figure 3 As shown, the gas burner head 10 includes an outer ring structure 1 and an inner ring structure 2. The outer ring structure 1 is fitted over the outer side of the inner ring structure 2. The outer ring burner cap 30 is positioned above the outer ring structure 1, and the inner ring burner cap 40 is positioned above the inner ring structure 2. The outer ring structure 1 and the inner ring structure 2 are connected. The gas injected by the nozzle 204 first enters the outer ring structure 1 and mixes with air. Then, part of the gas mixture directly enters the outer ring burner cap 30 from the outer ring structure 1 for combustion, and part of the gas mixture enters the inner ring structure 2 from the outer ring structure 1, and finally enters the inner ring burner cap 40 from the inner ring structure 2 for combustion.

[0053] In the prior art, some top-inlet burners are limited by the size of the gas burner head 10, and the ejector channel 13 is set to be relatively short, resulting in uneven mixing of gas and air, which leads to incomplete combustion and low combustion efficiency.

[0054] In this regard, such as Figures 4-6 As shown, the outer ring structure 1 of the gas burner head 10 includes an inner ring wall 11 and an outer ring wall 12 connected at the bottom and spaced apart at the top, forming a gas passage. Along the airflow direction, the gas passage includes an ejector channel 13, an outer ring mixing chamber 14 and a distribution channel 15 connected in sequence. The outer ring mixing chamber 14 and the distribution channel 15 are arranged circumferentially along the outer ring structure 1. The ejector channel 13 is located below the distribution channel 15. The volume of the outer ring mixing chamber 14 is larger than the volume of the ejector channel 13. The nozzle 204 is opposite to the inlet of the ejector channel 13 and can inject gas into the ejector channel 13.

[0055] In operation, the gas in the top-inlet burner undergoes initial mixing with air in the ejector channel 13 before entering the outer ring mixing chamber 14. Since the volume of the outer ring mixing chamber 14 is larger than that of the ejector channel 13, the flow velocity and kinetic energy of the mixed gas are significantly reduced, allowing for more thorough mixing of the gas and air. This ensures complete combustion and improves combustion efficiency. Next, a portion of the mixed gas in the outer ring mixing chamber 14 directly enters the outer ring burner cap 30 for combustion; another portion enters the distribution channel 15, filling the passageway and further mixing. Simultaneously, some gas in the distribution channel 15 then rises into the outer ring burner cap 30 for combustion, ensuring that the mixed gas enters the outer ring burner cap 30 evenly along its circumference, resulting in a uniform flame distribution. Finally, a portion of the mixed gas enters the inner ring structure 2 for further mixing before entering the inner ring burner cap 40 for combustion, thus ensuring a uniform flame distribution throughout the entire plane of the top-inlet burner.

[0056] In this embodiment, as Figure 4 and Figure 5 As shown, the outer ring structure 1 includes two gas passages, which are symmetrically arranged. The outer ring mixing chambers 14 of the two gas passages are connected, and the two distribution channels 15 are also connected. The two ejector channels 13 are respectively located below the corresponding distribution channels 15. Correspondingly, the nozzle seat 20 includes two nozzles 204, each of which can inject gas into one ejector channel 13.

[0057] Factors affecting the uniformity of gas-air mixing include the size of the mixing space and the gas flow rate. A larger mixing space is more conducive to uniform mixing, while a lower gas flow rate is more conducive to uniform mixing.

[0058] Preferably, in this embodiment, the volume of the distribution channel 15 is smaller than the volume of the outer ring mixing chamber 14. During the process of some gas entering the distribution channel 15 from the outer ring mixing chamber 14, there will be a loss of kinetic energy, thus the gas flow rate will decrease. If only the effect of flow rate on gas mixing uniformity is considered, the mixing capacity of the gas in the distribution channel 15 is higher than that in the outer ring mixing chamber 14. In this embodiment, the volume of the distribution channel 15 is set to be smaller than that of the outer ring mixing chamber 14, thus appropriately reducing the gas mixing capacity in the distribution channel 15. That is, the volume difference balances the effect of the flow rate difference on the gas mixing uniformity of the distribution channel 15 and the outer ring mixing chamber 14, making the gas mixing uniformity in the distribution channel 15 as consistent as possible with the gas mixing uniformity in the outer ring mixing chamber 14. This ensures that the uniformity of the mixed gas entering the outer ring flame cap 30 at all positions along the circumference of the outer ring structure 1 is consistent, ultimately ensuring the stable and uniform flame generated by the outer ring flame cap 30 along the circumference. Optionally, the volume of the distribution channel 15 can be made smaller than the volume of the outer ring mixing cavity 14 by one or more combinations of increasing the height of the bottom plate of the distribution channel 15, shortening the length of the distribution channel 15, and reducing the radial dimension of the distribution channel 15, provided that the top heights of the two are the same.

[0059] Preferably, such as Figure 3 As shown, the outer ring wall 12, corresponding to the outer ring mixing chamber 14, includes a lower outer ring wall 121 and an upper outer ring wall 122 connected to each other. The lower outer ring wall 121 is arranged outward, and the upper outer ring wall 122 is arranged inward. The upper outer ring wall 122 is located above the outer ring mixing chamber 14, forming a first recirculation zone 142 in the outer ring mixing chamber 14. The upper outer ring wall 122 can block the airflow, causing the airflow to detour and form the first recirculation zone 142, which is equivalent to prolonging the flow time of the airflow in the outer ring mixing chamber 14, thereby making the fuel gas and air more fully mixed. In this embodiment, the edge of the upper outer ring wall 122 is hook-shaped, that is, it has a downwardly extending portion, thereby improving the blocking effect on the gas and thus more effectively forming the first recirculation zone 142.

[0060] Preferably, such as Figure 4 , Figure 6 and Figure 7 As shown, the gas passage also includes a transition channel 16, which is located between the outer ring mixing chamber 14 and the distribution channel 15. The flow area of ​​the transition channel 16 gradually decreases. By setting the transition channel 16 with a gradually decreasing flow area, on the one hand, the outer ring mixing chamber 14 and the distribution channel 15 are more smoothly connected; on the other hand, during the flow of gas along the transition channel 16, under the influence of both flow velocity and volume, the gas mixing uniformity at all positions along the circumference of the entire outer ring structure 1 is consistent, ultimately ensuring the stable and uniform flame generated by the outer ring flame cap 30 along the circumference.

[0061] In this embodiment, as Figure 5 and Figure 7 As shown, the tops of the outer ring mixing chamber 14, the transition channel 16, and the distribution channel 15 are flush. The bottom plate of the outer ring mixing chamber 14 (hereinafter referred to as the first bottom plate 141) is lower than the bottom plate of the distribution channel 15 (hereinafter referred to as the second bottom plate 151). The bottom plate of the transition channel 16 (hereinafter referred to as the third bottom plate 161) is inclined and connected between the bottom plates of the outer ring mixing chamber 14 and the distribution channel 15. That is, the volume control of the outer ring mixing chamber 14, the transition channel 16, and the distribution channel 15 is achieved by varying the heights of the first bottom plate 141, the second bottom plate 151, and the third bottom plate 161. The structure is simple and easy to implement. It can be understood that the first bottom plate 141, the second bottom plate 151, and the third bottom plate 161 can be a single-piece molded structure, thereby ensuring the sealing of the entire air passage.

[0062] like Figures 4-6 As shown, the inner ring structure 2 includes a side peripheral wall 21 and a fourth base plate 22. The side peripheral wall 21 is located inside the inner ring wall 11, and the fourth base plate 22 is connected below the side peripheral wall 21, thereby forming an inner ring mixing chamber 23. The outer ring mixing chamber 14 is connected to the inner ring mixing chamber 23 through a first channel 3, and the distribution channel 15 is connected to the inner ring mixing chamber 23 through a second channel 4. The gas in the outer ring structure 1 is supplied to the inner ring mixing chamber 23 through the two channels, making the gas distribution in the inner ring mixing chamber 23 more uniform. After the gas in the first channel 3 and the gas in the second channel 4 enter the inner ring mixing chamber 23, the flow rate is further reduced and the mixture is fully mixed, thereby ensuring that the gas can be fully combusted after entering the inner ring burner cap 40.

[0063] In this embodiment, as Figure 6 As shown, the outer ring mixing chambers 14 of the two gas passages are connected through the same first channel 3, and the distribution channels 15 of the two gas passages are connected through the same second channel 4, thereby simplifying the structure of the gas burner head 10.

[0064] Preferably, such as Figure 4 and Figure 6 As shown, a diversion section 5 is provided between the two outer ring mixing chambers 14. The diversion section 5 is positioned opposite to the first channel 3 and forms two gas passage gaps 6 with the inner ring wall 11. The two gas passage gaps 6 respectively connect the corresponding outer ring mixing chamber 14 and the first channel 3. The gas in the outer ring mixing chamber 14 enters the first channel 3 through the corresponding gas passage gap 6, thereby reducing the collision of gases in the two outer ring mixing chambers 14, reducing gas disturbance, and thus ensuring the stability of the flame at the corresponding position of the outer ring flame cap 30. In addition, as Figure 6As shown, the flow divider 5 obstructs the gas in the outer ring mixing chamber 14, forming a second recirculation zone 143 in the outer ring mixing chamber 14, which is equivalent to extending the flow time of the gas in the outer ring mixing chamber 14, thereby ensuring that the combustion gas and air are fully mixed.

[0065] Preferably, such as Figure 8 As shown, the top surface of the first channel 3 is lower than the top surface of the outer ring wall 12. Therefore, a portion of the gas in the outer ring mixing chamber 14 corresponding to the first channel 3 enters the first channel 3 horizontally, while the other portion directly enters the outer ring burner cap 30 for combustion. This ensures that the portion of the outer ring mixing chamber 14 corresponding to the first channel 3 supplies gas to the first channel 3 without affecting the gas flow to the outer ring burner cap 30. It also limits the amount of gas flowing into the inner ring structure 2, preventing excessive heat load on the inner ring structure 2 and thus avoiding poor combustion. Similarly, the top surface of the second channel 4 is lower than the top surface of the outer ring wall 12. A portion of the gas in the distribution channel 15 corresponding to the second channel 4 enters the second channel 4, while the other portion directly enters the outer ring burner cap 30 for combustion. This ensures that the portion of the distribution channel 15 opposite to the second channel 4 supplies gas to the second channel 4 without affecting the gas flow into the outer ring burner cap 30. It also limits the amount of gas flowing into the inner ring structure 2, preventing excessive load on the inner ring structure 2 and thus avoiding poor combustion. In this embodiment, the top surface height of the first channel 3 is the same as the top surface height of the second channel 4.

[0066] Preferably, the volume of the first channel 3 is greater than the volume of the second channel 4. Since the first channel 3 is connected to the outer ring mixing chamber 14 and the second channel 4 is connected to the distribution channel 15, the gas flow rate in the first channel 3 is greater than the gas flow rate in the second channel 4. If only the influence of gas flow rate on gas mixing uniformity is considered, the gas mixing capacity in the second channel 4 is higher than the gas mixing capacity in the first channel 3. In this embodiment, the volume of the first channel 3 is set to be greater than that of the second channel 4, which appropriately improves the gas mixing capacity in the first channel 3. That is, the influence of the flow rate difference on the gas mixing uniformity in the first channel 3 and the second channel 4 is balanced by the volume difference, so that the gas mixing uniformity in the first channel 3 and the gas mixing uniformity in the second channel 4 are kept as consistent as possible, thereby ensuring the uniformity of gas mixing degree entering the inner ring mixing chamber 23. Optionally, provided that the top surfaces of the first channel 3 and the second channel 4 are at the same height, the volume of the second channel 4 can be made smaller than the volume of the first channel 3 by one or more of the following methods: increasing the height of the bottom plate of the second channel 4 (hereinafter referred to as the sixth bottom plate 41) relative to the bottom plate of the first channel 3 (hereinafter referred to as the fifth bottom plate 31), shortening the length of the second channel 4, or narrowing the width of the second channel 4. In this embodiment, the length of the first channel 3 and the length and width of the second channel 4 are equal, while the height of the fifth bottom plate 31 is lower than the height of the fourth bottom plate 22, thereby making the volume of the first channel 3 larger than the volume of the second channel 4.

[0067] In this embodiment, as Figure 4 , Figure 6 and Figure 8 As shown, the bottom plate (i.e., the fourth bottom plate 22) of the inner ring mixing chamber 23 forms a stepped structure and includes a first platform 221, a stepped surface 223, and a second platform 222. The first platform 221 is lower than the second platform 222. The bottom plate of the first channel 3 (i.e., the fifth bottom plate 31) is connected to the first platform 221, and the bottom plate of the second channel 4 (i.e., the sixth bottom plate 41) is connected to the second platform 222. The stepped structure creates a height difference between the gas entering the inner ring mixing chamber 23 from the first channel 3 and the gas entering the inner ring mixing chamber 23 from the second channel 4. Some of the gas in the first channel 3 is blocked by the stepped surface 223 and flows upward, thereby reducing the collision between the gas in the first channel 3 and the second channel, reducing gas disturbance, and thus improving the stability of the gas in the inner ring mixing chamber 23, thereby ensuring the stability of the flame generated by the combustion of the inner ring burner cap 40.

[0068] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, based on the concept of the present invention, there will be changes in specific implementation methods and application scope. The content of this specification should not be construed as a limitation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A gas-fired burner head, characterized in that, It includes an outer ring structure (1), which includes an inner ring wall (11) connected at the bottom and an outer ring wall (12) spaced apart at the top, forming an air passage; Along the airflow direction, the air passage includes an ejector channel (13), an outer ring mixing chamber (14), and a distribution channel (15) connected in sequence. The outer ring mixing chamber (14) and the distribution channel (15) are arranged circumferentially along the outer ring structure (1). The ejector channel (13) is located below the distribution channel (15). The volume of the outer ring mixing chamber (14) is greater than the volume of the ejector channel (13). Both the outer ring mixing chamber (14) and the distribution channel (15) are connected to the outer ring burner cap (30) of the upper air intake burner. The volume of the distribution channel (15) is smaller than the volume of the outer ring mixing chamber (14).

2. The gas burner head as described in claim 1, characterized in that, The gas passage also includes a transition passage (16), which is disposed between the outer ring mixing chamber (14) and the distribution passage (15), and the flow area of ​​the transition passage (16) gradually decreases.

3. The gas burner head as described in claim 2, characterized in that, The tops of the outer ring mixing chamber (14), the transition channel (16), and the distribution channel (15) are flush. The bottom plate of the outer ring mixing chamber (14) is lower than the bottom plate of the distribution channel (15). The bottom plate of the transition channel (16) is inclined and connected between the bottom plate of the outer ring mixing chamber (14) and the bottom plate of the distribution channel (15).

4. The gas burner head as described in claim 1, characterized in that, The outer ring wall (12) corresponding to the outer ring mixing cavity (14) includes an outer ring lower peripheral wall (121) and an outer ring upper peripheral wall (122) connected to each other. The outer ring lower peripheral wall (121) is arranged to expand outward, and the outer ring upper peripheral wall (122) is arranged to contract inward. The outer ring upper peripheral wall (122) is located above the outer ring mixing cavity (14) and makes the outer ring mixing cavity (14) form a first reflux zone (142).

5. The gas burner head as described in any one of claims 1-4, characterized in that, The gas burner head also includes an inner ring structure (2), which is disposed inside the inner ring wall (11) and forms an inner ring mixing chamber (23). The outer ring mixing chamber (14) is connected to the inner ring mixing chamber (23) through a first channel (3), and the distribution channel (15) is connected to the inner ring mixing chamber (23) through a second channel (4).

6. The gas burner head as described in claim 5, characterized in that, The volume of the first channel (3) is greater than the volume of the second channel (4).

7. The gas burner head as described in claim 5, characterized in that, The bottom plate of the inner ring mixing chamber (23) forms a stepped structure and includes a first platform (221) and a second platform (222). The first platform (221) is lower than the second platform (222). The bottom plate of the first channel (3) is connected to the first platform (221), and the bottom plate of the second channel (4) is connected to the second platform (222).

8. The gas burner head as described in claim 5, characterized in that, The top surface of the first channel (3) is lower than the top surface of the outer annular wall (12); and / or The top surface of the second channel (4) is lower than the top surface of the outer ring wall (12).

9. The gas burner head as described in claim 5, characterized in that, The outer ring structure (1) includes two air passages, and the outer ring mixing chambers (14) of the two air passages are connected to the inner ring mixing chamber (23) through the same first channel (3).

10. The gas burner head as described in claim 9, characterized in that, A diversion section (5) is provided between the two outer ring mixing chambers (14), and the diversion section (5) forms a second reflux zone (143) in the outer ring mixing chamber (14); The diversion section (5) is disposed opposite to the first channel (3) and forms two air gaps (6) with the inner ring wall (11) so that the two air gaps (6) are respectively connected to the corresponding outer ring mixing chamber (14) and the first channel (3).

11. A top-inlet burner, characterized in that, It includes an outer ring burner cap (30), a nozzle seat (20), and a gas burner head as described in any one of claims 1-10, wherein the nozzle seat (20) is used to inject gas into the ejector channel (13), and the outer ring burner cap (30) is disposed on the outer ring structure (1) and receives the mixed gas from the gas burner head.

12. A stove, characterized in that, It includes at least one top-inlet burner as described in claim 11.

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