Burner structure, burner assembly and gas stove

Abstract

The utility model provides a furnace end structure, a burner assembly and a gas stove, and relates to the technical field of cooking utensils. The furnace end structure comprises a furnace end, a gas cavity is formed from the top to the interior of the furnace end, an injection opening is formed in the bottom of the furnace end, and the gas cavity is communicated with the injection opening through a gas guiding channel; the end, communicated with the gas cavity, of the gas entraining channel is a gas outlet, a first boss is arranged on the side wall, provided with the gas outlet, of the gas cavity, and the first boss is located on one side of the gas outlet. And / or, the side wall of the furnace end is provided with a flow guide piece extending to the position below the bottom of the furnace end, and the flow guide piece is located on one side of the injection opening. According to the furnace end structure, when liquid flows into the gas cavity, the liquid can be intercepted through the first boss so as to be prevented from continuously flowing into the gas entraining channel, and therefore the liquid is prevented from flowing to the nozzle; the liquid can be intercepted through the flow guide piece when the liquid drips on the outer surface of the furnace end, the liquid at the edge of the bottom of the furnace end is prevented from extending to the injection opening due to tension, and therefore the liquid is prevented from flowing to the nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking utensils, in particular to a stove head structure, a burner assembly and a gas stove. Background Art

[0002] The burner usually includes a nozzle seat, a burner head disposed above the nozzle seat, and a fire cover disposed above the burner head. The nozzle seat is provided with a nozzle with a spray hole facing upward, and the burner head is provided with an air bleed channel located directly above the nozzle. The bottom end of the air bleed channel is an injection port, and the top end of the air bleed channel is connected to the fire hole on the fire cover through the mixed gas cavity inside the burner head. During use, the gas is sprayed upward to the injection port through the nozzle spray hole, and then flows to the fire hole of the fire cover through the air bleed channel and the mixed gas cavity, and finally ignites at the fire hole by the cooperation of the thermocouple and the ignition needle.

[0003] However, the fire cover and burner head in the burner are the guiding bodies of the external liquid, which makes it easy for the external liquid to flow along the fire hole into the mixed gas cavity inside the burner head or drip along the gap between the fire cover and the burner head to the outer surface of the burner head. Since the top of the bleed channel and the bottom side wall of the mixed gas cavity inside the burner head are located in the same plane, the liquid flowing into the mixed gas cavity inside the burner head will eventually flow to the top of the bleed channel through its bottom side wall and enter the bleed channel, and then drip onto the nozzle through the bleed channel, causing the nozzle orifice to be blocked and unable to discharge gas normally (the aperture of the nozzle orifice is usually very small, and the liquid dripping onto the orifice will cause the orifice to be blocked and unable to discharge gas). The liquid dripping onto the outer surface of the burner head will eventually flow along the side wall of the burner head to the bottom edge of the burner head, and then gradually extend to the injection port under the tension of the liquid, and then drip onto the nozzle, which will also cause the nozzle orifice to be blocked and unable to discharge gas normally. Utility Model Content

[0004] The utility model aims to provide a burner head structure, a burner assembly and a gas stove, so as to alleviate the technical problem existing in the prior art that during the use of the burner, external liquid is easy to flow into the mixed gas cavity inside the burner head, or is easy to drip onto the outer surface of the burner head, and the liquid flowing into the mixed gas cavity will eventually flow into the air inlet channel through its bottom side wall, and then drip onto the nozzle, causing the nozzle spray hole to be blocked, and the liquid dripping onto the outer surface of the burner head will eventually gradually extend to the injection port under the action of the tension of the liquid, and will also drip onto the nozzle, causing the nozzle spray hole to be blocked.

[0005] In a first aspect, the utility model provides a burner head structure, comprising a burner head, wherein a gas cavity extending into the interior of the burner head is provided at the top of the burner head, an injection port is provided at the bottom of the burner head, and the gas cavity and the injection port are connected via an air introduction channel provided inside the burner head;

[0006] The end of the air duct connected to the gas cavity is an air outlet, and a first boss is provided at the side wall of the gas cavity where the air outlet is provided, and the first boss is located on one side of the air outlet to intercept the liquid flowing toward the air outlet; and / or, the side wall of the burner head is provided with a guide member extending to below the bottom of the burner head, and the guide member is located on one side of the duct port to intercept the liquid flowing toward the duct port.

[0007] In an optional embodiment, a second boss is further provided on the side wall of the gas chamber where the gas outlet is provided, and the second boss is provided between the first boss and the gas outlet.

[0008] In an optional embodiment, the second boss is annular, and the air outlet is located on the inner side of the second boss.

[0009] In an optional embodiment, a height of the second boss along the axial direction of the air outlet is not less than 1 mm.

[0010] In an optional embodiment, a height of the first boss along the axial direction of the air outlet is 1-3 mm.

[0011] In an optional embodiment, a side of the guide member located below the bottom of the furnace head is a suspended side, and a vertical distance between the injection port and the suspended side of the guide member is not less than 3 mm.

[0012] In an optional embodiment, a vertical distance between a side of the injection port close to the guide member and the guide member is greater than 3 mm.

[0013] In an optional embodiment, the guide member is arranged on a circumferential side wall of the furnace head close to the air duct.

[0014] In a second aspect, the utility model provides a burner assembly, comprising the burner head structure described in any one of the aforementioned embodiments.

[0015] In a third aspect, the utility model provides a gas stove, comprising the burner assembly described in the aforementioned embodiment.

[0016] The burner head structure provided by the utility model comprises a burner head, wherein a gas cavity extending into the interior of the burner head is provided on the top of the burner head, an injection port is provided on the bottom of the burner head, the gas cavity and the injection port are connected via an air introduction channel provided inside the burner head; the end of the air introduction channel connected with the gas cavity is an air outlet, a first boss is provided at the side wall of the gas cavity where the air outlet is provided, the first boss is located at one side of the air outlet to intercept liquid flowing toward the air outlet; and / or a flow guide is provided on the side wall of the burner head to extend to below the bottom of the burner head, the flow guide is located at one side of the injection port to intercept liquid flowing toward the injection port. The burner head structure provided by the utility model is applied to the burner of the gas stove. During use, the burner head in the burner head structure needs to be placed between the nozzle seat and the fire cover of the burner, and the air outlet of the air duct channel inside the burner head is located above the injection port at the bottom of the burner head. At this time, the air outlet of the air duct channel is connected with the fire hole on the fire cover through the gas cavity between the top and the inside of the burner head, and the injection port is located just above the nozzle hole on the nozzle seat. When cooking, the gas will be sprayed into the injection port from the nozzle hole, and then flow to the fire hole on the fire cover through the air duct channel, the air outlet and the gas cavity in sequence, and then ignited under the cooperation of the thermocouple and the ignition needle located on one side of the fire hole in the burner. However, during the cooking or cleaning process, there is a situation where liquids such as oil and water on the bottom of the pot or the rag flow back to the gas cavity inside the burner through the fire holes on the fire cover. After the liquid flows into the gas cavity, it will gather at the side wall of the gas cavity where the air outlet is provided (that is, the bottom of the gas cavity). At this time, in the burner structure, a first boss may be provided at the side wall of the gas cavity where the air outlet is provided, and the first boss is located on one side of the air outlet to intercept the liquid flowing toward the air outlet. Under the intercepting effect of the first boss, the liquid gathered at the bottom of the gas cavity will not continue to flow toward the air outlet, and will not enter the air inlet channel, nor will it flow through the air inlet channel to the nozzle below the inlet port, causing the nozzle spray hole to be blocked. It should be noted that since the stove head structure is in a high-temperature environment during cooking, the liquid generated during the cooking process will gather at the bottom of the gas cavity and will gradually evaporate as the cooking progresses. This part of the liquid will not flow over the first boss to the air outlet due to excessive gathering. The amount of liquid during the cleaning process is relatively small, and it is difficult for this part of the liquid to gather in large quantities at the bottom of the gas cavity, nor will there be a situation where the amount of liquid is too high and flows over the first boss to the air outlet.In addition, during the cooking or cleaning process, there is a situation where liquids such as oil and water on the bottom of the pot or on the rag drip onto the outer surface of the burner along the gap between the fire cover and the burner. After the liquid drips onto the outer surface of the burner, it will continue to flow along the side wall of the burner to the edge of the bottom of the burner. When the amount of liquid attached to the edge of the bottom of the burner is small, the gravity of the liquid itself is also small, and it is difficult to drip directly to the bottom of the burner, but it will gradually extend to the injection port at the bottom of the burner under the action of its own surface tension. At this time, the side wall of the burner in the burner structure can be provided with a guide member extending to the bottom of the burner, and The guide piece is located on one side of the injection port. Since the guide piece is arranged on the side wall of the burner head, a distance difference is formed between the guide piece and the injection port. Since the guide piece extends to the bottom of the burner head, the liquid will continue to flow along the guide piece when it flows to the bottom edge of the burner head, and finally drip from the bottom of the guide piece to the surrounding side of the nozzle. It will not cross the above-mentioned distance difference under the action of its own surface tension and extend to the injection port at the bottom of the burner head, nor will it directly drip onto the nozzle to cause clogging of the nozzle spray hole. Therefore, the guide piece can intercept the liquid and prevent the liquid from reaching the injection port.

[0017] Compared with the prior art, the burner head structure provided by the utility model can intercept the liquid when it flows into the gas cavity through the first boss to prevent it from continuing to flow into the air inlet channel, thereby preventing the liquid from flowing to the nozzle and causing nozzle blockage; the guide member can intercept the liquid when liquid drips on the outer surface of the burner head to prevent the liquid at the bottom edge of the burner head from extending to the injection port due to tension, and also prevent the liquid from flowing to the nozzle and causing nozzle blockage.

[0018] The burner assembly provided by the utility model includes the above-mentioned burner head structure, so the burner assembly provided by the utility model has the same beneficial effects as the above-mentioned burner head structure.

[0019] The gas stove provided by the utility model comprises the above-mentioned burner assembly, so the gas stove provided by the utility model has the same beneficial effects as the above-mentioned burner assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 An exploded view of a burner head structure, a nozzle seat and a fire cover provided in an embodiment of the utility model;

[0022] Figure 2A cross-sectional view of a burner head structure, a nozzle seat and a fire cover provided in an embodiment of the utility model;

[0023] Figure 3 A schematic diagram of the partial structure of the burner head structure, the nozzle seat and the fire cover provided in the embodiment of the utility model;

[0024] Figure 4 A bottom view of the burner structure provided by an embodiment of the utility model;

[0025] Figure 5 A cross-sectional view of a burner structure provided by an embodiment of the utility model;

[0026] Figure 6 for Figure 5 AA section view in;

[0027] Figure 7 for Figure 5 BB section view in.

[0028] Icons: 1-burner head; 10-gas chamber; 11-injection port; 12-injection channel; 120-gas outlet; 2-first boss; 3-flow guide; 4-nozzle seat; 40-nozzle; 5-fire cover; 50-fire hole; 6-thermocouple; 7-second boss. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0032] Example:

[0033] like Figure 1-Figure 7As shown, the burner structure provided in this embodiment includes a burner 1, a gas cavity 10 extending into the burner 1 is provided at the top of the burner 1, an injection port 11 is provided at the bottom of the burner 1, and the gas cavity 10 and the injection port 11 are connected through an air duct 12 provided inside the burner 1. The end of the air duct 12 connected to the gas cavity 10 is an air outlet 120, as shown in FIG. Figure 5 , Figure 6 and Figure 7 As shown, a first boss 2 is provided at the side wall of the gas chamber 10 where the gas outlet 120 is provided. The first boss 2 is located at one side of the gas outlet 120 to intercept the liquid flowing toward the gas outlet 120; or Figure 2 , Figure 3 and Figure 4 As shown, the side wall of the burner head 1 is provided with a guide member 3 extending to the bottom of the burner head 1, and the guide member 3 is located on one side of the injection port 11 to intercept the liquid flowing toward the injection port 11; or, a first boss 2 is provided at the side wall of the gas cavity 10 where the gas outlet 120 is provided, and the side wall of the burner head 1 is provided with a guide member 3 extending to the bottom of the burner head 1.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, the burner head structure provided in this embodiment is applied to the burner of the gas stove. During use, the burner head 1 in the burner head structure needs to be placed between the nozzle seat 4 and the fire cover 5 of the burner, and the air outlet 120 of the air duct 12 inside the burner head 1 is located above the injection port 11 at the bottom of the burner head 1. At this time, the air outlet 120 of the air duct 12 is connected with the fire hole 50 on the fire cover 5 through the gas cavity 10 between the top and the inside of the burner head 1, and the injection port 11 is located directly above the spray hole of the nozzle 40 on the nozzle seat 4.

[0035] Figure 2 The hollow arrow in the middle indicates the direction of gas flow. Figure 2 As shown, the gas will be sprayed into the injection port 11 from the nozzle 40, and then flow to the fire hole 50 on the fire cover 5 through the air duct 12, the air outlet 120 and the gas cavity 10 in sequence, and then ignited by the cooperation of the thermocouple 6 and the ignition needle located on one side of the fire hole 50 in the burner.

[0036] However, during cooking or cleaning, there is a situation where liquids such as oil and water on the bottom of the pot or on the rag flow backwards through the fire hole 50 on the fire cover 5 to the gas cavity 10 inside the burner 1. Figure 2 The hollow arrow indicates the opposite direction. After the liquid flows into the gas chamber 10, it will gather at the side wall of the gas chamber 10 where the gas outlet 120 is provided (that is, the bottom of the gas chamber 10). At this time, in the burner structure, Figure 5 , Figure 6 and Figure 7 As shown, a first boss 2 is provided at the side wall of the gas chamber 10 where the gas outlet 120 is provided, and the first boss 2 is located at one side of the gas outlet 120 to intercept the liquid flowing toward the gas outlet 120 . Figure 6 The solid arrow in FIG. 1 is the direction of liquid flow from the bottom of the gas chamber 10 to the gas outlet 120. Figure 6 It can be seen that the liquid will be intercepted when passing through the first boss 2, and it can flow to the gas outlet 120 only after crossing the first boss 2. Therefore, the first boss 2 can intercept the liquid, so that the liquid gathered at the bottom of the gas cavity 10 will not continue to flow to the gas outlet 120, nor will it flow through the air duct 12 to the nozzle 40 below the injection port 11 and cause the nozzle 40 spray hole to be blocked.

[0037] It should be noted that, since the stove head structure is in a high-temperature environment during cooking, the liquid generated during the cooking process will gather at the bottom of the gas cavity 10 and will gradually evaporate as the cooking progresses. This part of the liquid will not flow over the first boss 2 to the air outlet 120 due to excessive gathering. The amount of liquid during the cleaning process is relatively small, and it is difficult for this part of the liquid to gather in large quantities at the bottom of the gas cavity 10, nor will there be a situation where the amount of liquid is too high and flows over the first boss 2 to the air outlet 120.

[0038] In addition, during cooking or cleaning, there is a situation where liquids such as oil and water on the bottom of the pot or the rag drip along the gap between the fire cover 5 and the burner 1 to the outer surface of the burner 1. The direction of the liquid flow is as follows: Figure 2 After the liquid drips onto the outer surface of the burner head 1, it will continue to flow along the side wall of the burner head 1 to the edge of the bottom of the burner head 1. When the amount of liquid attached to the bottom edge of the burner head 1 is small, the gravity of the liquid itself is also small, and it is difficult to drip directly to the bottom of the burner head 1, but it will gradually extend to the injection port 11 at the bottom of the burner head 1 under the action of its own surface tension. Figure 2-Figure 4 , Figure 6-Figure 7 As shown, the side wall of the burner 1 in the burner structure can be provided with a guide member 3 extending to the bottom of the burner 1, and the guide member 3 is located on one side of the injection port 11. Since the guide member 3 is provided at the side wall of the burner 1, a distance difference is formed between the guide member 3 and the injection port 11. Since the guide member 3 extends to the bottom of the burner 1, the liquid will continue to flow along the guide member 3 when it flows to the bottom edge of the burner 1, and finally drip from the bottom of the guide member 3 to the surrounding side of the nozzle 40. It will not extend to the injection port 11 at the bottom of the burner 1 across the above-mentioned distance difference under the action of its own surface tension, nor will it directly drip onto the nozzle 40 to cause clogging of the nozzle 40 spray hole. Therefore, the guide member 3 can intercept the liquid so that the liquid cannot reach the injection port 11.

[0039] Compared with the prior art, the burner head structure provided in this embodiment can intercept the liquid when it flows into the gas chamber 10 through the first boss 2 to prevent it from continuing to flow into the air inlet channel 12, thereby preventing the liquid from flowing to the nozzle 40 and causing the nozzle 40 to be blocked; the guide member 3 can intercept the liquid when liquid drips from the outer surface of the burner head 1 to prevent the liquid at the bottom edge of the burner head 1 from extending to the injection port 11 due to tension, and also prevent the liquid from flowing to the nozzle 40 and causing the nozzle 40 to be blocked.

[0040] In order to prevent the burner head structure from entering the gas cavity 10 and then flowing into the air duct 12 during daily use, and to prevent the liquid from dripping on the outer surface of the burner head 1 and extending to the injection port 11 at the bottom of the burner head 1, the present embodiment preferably provides a first boss 2 on the side wall of the gas cavity 10 in the burner head 1 where the air outlet 120 is provided, and the side wall of the burner head 1 is provided with a guide member 3 extending to the bottom of the burner head 1.

[0041] In addition, in order to enhance the interception effect of the first boss 2 on the liquid, the present embodiment preferably has multiple first bosses 2, and the multiple first bosses 2 can be distributed in sequence along the circumference of the gas outlet 120. At this time, the multiple first bosses 2 can respectively intercept the liquid from various directions on the circumferential side of the gas outlet 120, thereby effectively preventing the liquid at the bottom of the gas cavity 10 from flowing into the gas outlet 120.

[0042] In this embodiment, if Figure 3 , Figure 5 and Figure 6 As shown, a second boss 7 may be further provided at the side wall of the gas chamber 10 where the gas outlet 120 is provided. The second boss 7 is provided between the first boss 2 and the gas outlet 120 .

[0043] Figure 6 The direction indicated by the solid arrow is the flow direction of the liquid from the bottom of the gas cavity 10 to the gas outlet 120. During the use of the burner structure, if the liquid at the bottom of the gas cavity 10 passes over the first boss 2, Figure 6 As shown, the liquid needs to continue to pass over the second boss 7 to flow to the gas outlet 120. It can be seen that the second boss 7 can intercept the liquid for a second time, effectively preventing the liquid that passes over the first boss 2 from continuing to flow to the gas outlet 120.

[0044] It can be seen that the second boss 7 can play a second interception role, further preventing liquid from entering the air outlet 120 .

[0045] Furthermore, the second boss 7 is annular, and the air outlet 120 is located on the inner side of the second boss 7 .

[0046] When the air outlet 120 is located on the inner side of the annular second boss 7 , the second boss 7 can fully cover the air outlet 120 , intercepting liquid from all directions around the air outlet 120 , thereby fully preventing liquid from flowing into the air outlet 120 .

[0047] In order to enable the second boss 7 to effectively intercept the liquid and prevent it from flowing into the gas outlet 120, in this embodiment, the height of the second boss 7 along the axial direction of the gas outlet 120 is preferably not less than 1 mm.

[0048] In this embodiment, the height of the first boss 2 along the axial direction of the air outlet 120 is 1-3 mm.

[0049] The axial height of the first boss 2 along the gas outlet 120 is controlled between 1-3 mm, which can not only meet the function of intercepting liquid, but also prevent the gas flow from being subjected to excessive resistance and affecting the static pressure inside the gas cavity 10 when the gas flows through the first boss 2 during the cooking process, or prevent excessive turbulence from being generated at the first boss 2.

[0050] The side of the flow guide 3 located below the bottom of the furnace head 1 is a suspended side, and the vertical distance between the injection port 11 and the suspended side of the flow guide 3 is not less than 3 mm.

[0051] Since the vertical distance between the injection port 11 and the suspended side of the guide member 3 is too small, the liquid will still flow over the suspended side of the guide member 3 to the injection port 11 due to impact force or its own tension. Therefore, in this embodiment, the distance between the injection port 11 and the suspended side of the guide member 3 is preferably not less than 3 mm. At this time, the suspended side of the guide member 3 will cause a greater obstruction to the liquid at the bottom edge of the furnace head 1, which can effectively prevent the liquid from passing over the suspended side of the guide member 3, thereby effectively preventing the liquid from flowing to the injection port 11.

[0052] In this embodiment, the vertical distance between the side of the injection port 11 close to the flow guide 3 and the flow guide 3 is greater than 3 mm.

[0053] When the vertical distance between the side of the injection port 11 close to the guide member 3 and the guide member 3 is greater than 3 mm, the injection port 11 can be sufficiently far away from the guide member 3, which can further hinder the process of liquid flowing to the injection port 11, thereby effectively preventing the liquid at the bottom edge of the furnace head 1 from reaching the injection port 11.

[0054] Since the injection port 11 is usually located between the center of the bottom of the burner 1 and the edge of the bottom of the burner 1, rather than at the center of the bottom of the burner 1, the liquid dripping onto the outer surface of the burner 1 may extend to the injection port 11 after reaching the edge of the bottom of the burner 1. However, the liquid that can extend to the injection port 11 is only the liquid on the edge of the bottom of the burner 1 near the injection port 11. Based on this, it is only necessary to provide the guide member 3 at the circumferential side wall of the burner 1 near the air inlet channel 12 to prevent the liquid on the outer surface of the burner 1 from extending to the injection port 11. Figure 3 As shown, in this embodiment, the guide member 3 is preferably arranged on the circumferential side wall of the furnace head 1 close to the air introduction channel 12 .

[0055] Furthermore, the guide member 3 may be in a plate shape, in which case the guide member 3 may form a retaining wall at a position near the injection port 11 at the bottom edge of the furnace head 1 , thereby effectively blocking the liquid from flowing toward the injection port 11 .

[0056] Since the bottom edge of the furnace head 1 is usually round, the plate surface of the guide member 3 may also be arc-shaped to adapt to the shape of the bottom of the furnace head 1 .

[0057] The present embodiment further provides a burner assembly, which includes the burner head structure. The burner assembly provided in the present embodiment may also include the aforementioned nozzle holder 4 and the fire cover 5, and the burner head structure is arranged between the nozzle holder 4 and the fire cover 5. Since the burner assembly provided in the present embodiment includes the burner head structure, the burner assembly provided in the present embodiment and the burner head structure can solve the same technical problems and achieve the same technical effects, and will not be described in detail here.

[0058] The present embodiment further provides a gas stove, which includes the above-mentioned burner assembly. Therefore, the gas stove provided in the present embodiment and the above-mentioned burner assembly can solve the same technical problems and achieve the same technical effects, which will not be described in detail here.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A furnace head structure, characterized in that: The burner comprises a burner head (1), wherein a gas cavity (10) extending into the burner head (1) is provided at the top thereof, an injection port (11) is provided at the bottom thereof, and the gas cavity (10) and the injection port (11) are connected via an air introduction channel (12) provided inside the burner head (1); The end of the air duct (12) communicating with the gas cavity (10) is a gas outlet (120), and a first boss (2) is provided at a side wall of the gas cavity (10) provided with the gas outlet (120), and the first boss (2) is located on one side of the gas outlet (120) to intercept liquid flowing toward the gas outlet (120); and / or, The side wall of the furnace head (1) is provided with a flow guide (3) extending to below the bottom of the furnace head (1); the flow guide (3) is located on one side of the injection port (11) to intercept liquid flowing toward the injection port (11).

2. The furnace head structure according to claim 1, characterized in that: A second boss (7) is also provided on the side wall of the gas cavity (10) where the gas outlet (120) is provided, and the second boss (7) is provided between the first boss (2) and the gas outlet (120).

3. The furnace head structure according to claim 2, characterized in that: The second boss (7) is annular, and the air outlet (120) is located on the inner side of the second boss (7).

4. The furnace head structure according to claim 2, characterized in that: The height of the second boss (7) along the axial direction of the air outlet (120) is not less than 1 millimeter.

5. The burner head structure according to any one of claims 1 to 4, characterized in that: The height of the first boss (2) along the axial direction of the air outlet (120) is 1-3 millimeters.

6. The furnace head structure according to claim 1, characterized in that: The side of the guide member (3) located below the bottom of the furnace head (1) is a suspended side, and the vertical distance between the injection port (11) and the suspended side of the guide member (3) is not less than 3 mm.

7. The furnace head structure according to claim 1, characterized in that: The vertical distance between the side of the injection port (11) close to the flow guide (3) and the flow guide (3) is greater than 3 millimeters.

8. The furnace head structure according to claim 6 or 7, characterized in that: The flow guide (3) is arranged on a circumferential side wall of the furnace head (1) close to the air introduction channel (12).

9. A burner assembly, characterized in that: The invention comprises the burner head structure as described in any one of claims 1 to 8.

10. A gas stove, characterized in that: Comprising the burner assembly of claim 9.

Images