Combustor and gas stove
By setting heat exchange protrusions and grooves on the bottom wall of the fire divider of the burner, the problem of low secondary air temperature is solved, and a more efficient combustion process is achieved.
Patent Information
- Application Number
- CN202420391841.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The existing burners have lower secondary air temperature, which causes the flame temperature to decrease, affecting the combustion efficiency.
A burner is designed, adopting a heat exchange structure, including setting up a plurality of heat exchange protrusions and heat exchange grooves on the bottom wall of the fire divider, increasing the contact area between the air and the burner, and forming turbulence through disturbance, extending the contact time between the air and the burner, and improving the heating effect.
By increasing the temperature of the secondary air, the temperature of the flame is significantly increased, thereby improving the combustion efficiency.
Smart Images
Figure CN222560074U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of gas stoves, and in particular to a burner and a gas stove. Background Art
[0002] As an important part of the stove, the burner usually includes a flame divider, which has an outer annular seat and an inner annular seat. An air inlet channel is directly formed between the outer wall of the inner annular seat and the inner wall of the outer annular seat to provide the central fire cover with secondary air required during the combustion process.
[0003] However, since the secondary air is provided by outside air, the temperature of the burner flame will decrease after the outside air with lower temperature is added to the burner. Utility Model Content
[0004] The embodiments of the present application provide a burner and a gas stove, which can increase the temperature of secondary air, thereby facilitating increasing the temperature of the flame.
[0005] In the first aspect, an embodiment of the present application provides a burner, which includes an ignition divider and a heat exchange structure, wherein an air supply channel is formed inside the ignition divider, and the air supply channel is used to provide secondary air. An air inlet connected to the air supply channel is provided at the bottom of the ignition divider; a plurality of heat exchange protrusions are protruded from the bottom wall of the ignition divider and are arranged at intervals around the air supply channel.
[0006] Based on the burner of the embodiment of the present application, the gas is discharged from the upper surface of the ignition divider and then burns above the ignition divider, so that a negative pressure is formed above the ignition divider. When the outside air is used to supply air to the burner for the second time, the outside air passes through the bottom wall of the ignition divider and the heat exchange protrusion arranged on the bottom wall of the ignition divider. The heat exchange protrusion increases the contact area between the burner and the air passing through the bottom wall of the ignition divider, that is, the heat exchange protrusion improves the heating effect of the burner on the air passing through the bottom wall of the ignition divider, thereby ensuring the temperature of the flame of the burner; on the other hand, the heat exchange protrusion disturbs the air passing through the bottom wall of the ignition divider so that at least part of the air forms turbulence, thereby prolonging the contact time between the air and the bottom wall of the ignition divider, thereby causing the air passing through the bottom wall of the ignition divider to be heated to a higher temperature by the ignition divider, thereby further ensuring the temperature of the flame of the burner.
[0007] In some embodiments of the present application, the heat exchange protrusion has a first heat exchange surface, and the first heat exchange surface is arranged in an arched surface.
[0008] Based on the above embodiment, after the first heat exchange surface is set as an arch surface, not only the first heat exchange surface has a larger area, but also the contour of the first heat exchange surface is smooth. Therefore, when the air passes through the bottom wall of the ignition divider, it can have a larger contact area with the first heat exchange surface, and the air can flow smoothly through the first heat exchange surface and realize the secondary air replenishment in time.
[0009] In some embodiments of the present application, the ratio of the area of the direct projections of the plurality of heat exchange protrusions on the bottom wall of the ignition divider along the height direction of the ignition divider to the area of the bottom wall of the ignition divider is greater than or equal to 1 / 2 and less than or equal to 3 / 4.
[0010] Based on the above embodiments, within this range, it can be ensured that there are sufficient heat exchange protrusions arranged on the fire divider to heat the air flowing through the bottom wall of the fire divider as much as possible; without too many heat exchange protrusions hindering the smooth flow of air through the bottom wall of the fire divider, resulting in insufficient secondary air replenishment.
[0011] In some embodiments of the present application, the heat exchange protrusion and the flame divider are an integrally formed structure, and the specific heat capacity of the heat exchange protrusion and the flame divider is less than or equal to 0.46×10^3 J / (kg·℃).
[0012] Based on the above embodiment, the integrally formed heat exchange protrusion and the ignition divider are easier to conduct heat, and the specific heat capacity of the heat exchange protrusion and the ignition divider is less than or equal to 0.46×10^3J / (kg·℃), so as to ensure that the heat exchange protrusion and the ignition divider have a faster heating rate, and after encountering air with lower temperature, the temperature can be quickly transferred to the air passing through the bottom of the ignition divider, so that the air passing through the bottom wall of the ignition divider can be quickly heated up.
[0013] In some embodiments of the present application, the bottom wall of the ignition distributor has a plurality of heat exchange grooves, and the heat exchange grooves are arranged at intervals around the air supplement channel;
[0014] Based on the above embodiment, the heat exchange groove increases the contact area between the burner and the air passing through the bottom wall of the ignition divider, that is, the heat exchange groove improves the heating effect of the burner on the air passing through the bottom wall of the ignition divider, thereby ensuring the temperature of the burner flame; on the other hand, the heat exchange groove cooperates with the heat exchange protrusion to disturb the air passing through the bottom wall of the ignition divider so that at least part of the air forms turbulence, thereby improving the disturbance effect of the heat exchange structure on the air passing through the bottom wall of the ignition divider, further extending the contact time between the air and the bottom wall of the ignition divider, and thereby causing the air passing through the bottom wall of the ignition divider to be heated to a higher temperature by the ignition divider, thereby further ensuring the temperature of the burner flame.
[0015] In some embodiments of the present application, the ratio of the area of the orthographic projection of the heat exchange protrusion along the height direction of the fire divider on the bottom wall of the fire divider to the area of the bottom wall of the fire divider is greater than or equal to 1 / 4 and less than or equal to 3 / 8; the ratio of the area of the orthographic projection of the heat exchange groove along the height direction of the fire divider on the bottom wall of the fire divider to the area of the bottom wall of the fire divider is greater than or equal to 1 / 4 and less than or equal to 3 / 8.
[0016] Based on the above embodiments, within this range, it can be ensured that there are sufficient heat exchange protrusions and heat exchange grooves on the fire divider to heat the air flowing through the bottom wall of the fire divider as much as possible; without too many heat exchange protrusions and heat exchange grooves hindering the smooth flow of air through the bottom wall of the fire divider, resulting in insufficient secondary air replenishment.
[0017] In some embodiments of the present application, a plurality of the heat exchange protrusions and a plurality of the heat exchange grooves constitute at least one group of heat exchange structures, the heat exchange protrusions and the heat exchange grooves in one group of the heat exchange structures are arranged alternately around the air supply channel, and a plurality of groups of the heat exchange structures are arranged along the radial direction of the ignition distributor; or,
[0018] A plurality of the heat exchange protrusions constitute at least one group of the heat exchange protrusions, a plurality of the heat exchange grooves constitute at least one group of the heat exchange grooves, and at least one group of the heat exchange protrusions and at least one group of the heat exchange grooves are arranged along the radial direction of the ignition distributor.
[0019] Based on the above embodiments, after the heat exchange protrusions and heat exchange grooves in each group of heat exchange structures are staggered around the air supply channel, the air passing through the bottom wall of the ignition divider can be disturbed as much as possible, so that the air passing through the bottom wall of the ignition divider produces turbulence, thereby prolonging the contact time between the air and the heat exchange protrusions and the heat exchange grooves; similarly, when multiple groups of heat exchange protrusions and multiple groups of heat exchange grooves are arranged along the radial direction of the ignition divider, the air flowing through the bottom wall of the ignition divider flows in sequence between the surface of the heat exchange protrusions and the groove walls of the heat exchange grooves, which can disturb the air passing through the bottom wall of the ignition divider as much as possible, so that the air passing through the bottom wall of the ignition divider produces turbulence, thereby prolonging the contact time between the air and the heat exchange protrusions and the heat exchange grooves.
[0020] In some embodiments of the present application, the fire divider includes an inner fire divider ring and an outer fire divider ring, the inner fire divider ring is provided with an inner gas channel, and the inner fire divider ring is provided with an inner fire hole connected to the inner gas channel; the outer fire divider ring is arranged around the inner fire divider ring, the inner fire divider ring is provided with an outer gas channel, and the outer fire divider ring is provided with an outer fire hole connected to the outer gas channel, and the air supply channel is located between the outer gas channel and the inner gas channel; the heat exchange protrusion and / or the heat exchange groove are arranged on the lower surface of the outer fire divider ring.
[0021] Based on the above embodiment, when the air passes through the bottom wall of the fire separation outer ring, it contacts the bottom wall of the fire separation outer ring, multiple heat exchange protrusions and multiple heat exchange grooves arranged at the bottom of the fire separation outer ring. After being heated by the fire separation outer ring, the heat exchange protrusions and the heat exchange grooves, the air enters the air supply channel between the fire separation outer ring and the fire separation inner ring through the air inlet to complete the secondary air supply to the burner.
[0022] In some embodiments of the present application, the ignition divider also includes a plurality of heat exchange parts, which are located between the ignition divider inner ring and the ignition divider outer ring and are respectively connected to the outer peripheral side of the ignition divider inner ring or the inner peripheral side of the ignition divider outer ring.
[0023] Based on the embodiments of the present application, a plurality of heat exchange parts can further heat the air entering into the air supply channel to further ensure the flame temperature of the burner.
[0024] In a second aspect, an embodiment of the present application provides a gas stove, which includes the burner as described above.
[0025] Based on the gas stove in the embodiment of the present application, since it has the above-mentioned burner, the air for secondary air supply can be preheated by the burner to ensure the temperature of the burner flame.
[0026] Based on the burner of the embodiment of the present application, the gas is discharged from the upper surface of the ignition divider and then burns above the ignition divider, so that a negative pressure is formed above the ignition divider. When the outside air is used to supply air to the burner for the second time, the outside air passes through the bottom wall of the ignition divider and the heat exchange protrusion arranged on the bottom wall of the ignition divider. The heat exchange protrusion increases the contact area between the burner and the air passing through the bottom wall of the ignition divider, that is, the heat exchange protrusion improves the heating effect of the burner on the air passing through the bottom wall of the ignition divider, thereby ensuring the temperature of the flame of the burner; on the other hand, the heat exchange protrusion disturbs the air passing through the bottom wall of the ignition divider so that at least part of the air forms turbulence, thereby prolonging the contact time between the air and the bottom wall of the ignition divider, thereby causing the air passing through the bottom wall of the ignition divider to be heated to a higher temperature by the ignition divider, thereby further ensuring the temperature of the flame of the burner. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0028] Figure 1 It is a structural schematic diagram of a burner in one embodiment of the present application;
[0029] Figure 2 for Figure 1 A top view of the burner is shown;
[0030] Figure 3 for Figure 2 The schematic diagram of the cross-sectional structure of the burner along the AA section is shown;
[0031] Figure 4 for Figure 1Bottom view of the burner shown.
[0032] Figure numerals: 10, ignition divider; 11, air supply channel; 12, air inlet; 13, ignition divider inner ring; 131, internal gas channel; 132, internal fire hole; 14, ignition divider outer ring; 141, external gas channel; 142, external fire hole; 15, heat exchange part; 20, heat exchange protrusion; 30, heat exchange groove. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0034] As an important part of the stove, the burner usually includes a flame divider, which has an outer annular seat and an inner annular seat. An air inlet channel is directly formed between the outer wall of the inner annular seat and the inner wall of the outer annular seat to provide the central fire cover with secondary air required during the combustion process.
[0035] However, since the secondary air is provided by outside air, the temperature of the burner flame will decrease after the outside air with lower temperature is added to the burner.
[0036] To solve the above technical problems, please refer to Figures 1 to 3 As shown, the first aspect of the present application proposes a burner, which can increase the temperature of secondary air, thereby facilitating increasing the temperature of the flame.
[0037] Please refer to Figures 1 to 3 As shown, the burner includes an ignition divider 10 and a heat exchange structure. An air supply channel 11 is formed inside the ignition divider 10, and the air supply channel 11 is used to provide secondary air. An air inlet 12 connected to the air supply channel 11 is provided at the bottom of the ignition divider 10; the heat exchange structure includes a plurality of heat exchange protrusions 20 protruding from the bottom wall of the ignition divider 10 to disturb the secondary air passing through the bottom of the ignition divider 10 so that at least part of the secondary air forms turbulent flow.
[0038] Gas stoves generally use an atmospheric combustion method, which is divided into primary air mixing and secondary air mixing. The proportion of air mixed into the gas by primary air mixing is about 60%, and the proportion of air mixed into the gas by secondary air mixing is about 40%. Usually, primary air is provided by the gas burner and is mainly adjusted by the damper of the gas burner. The influence of primary air on combustion is relatively large; secondary air is supplemented by external air. Gas combustion forms a negative pressure in the air supply channel 11. Under the pressure difference between the external air and the air supply channel 11, the external air enters the air supply channel 11 through the gap between the ignition distributor 10 and the burner head so that the gas can be fully burned; among them, air mixing refers to mixing air with gas so that the gas can burn.
[0039] Based on the burner of the embodiment of the present application, the gas is discharged from the upper surface of the igniter 10 and then burns above the igniter 10, so that negative pressure is formed above the igniter 10. When the outside air is used to supplement the burner for the second time, the outside air passes through the bottom wall of the igniter 10 and the heat exchange protrusion 20 arranged on the bottom wall of the igniter 10. The heat exchange protrusion 20 increases the contact area between the burner and the air passing through the bottom wall of the igniter 10, that is, the heat exchange protrusion 20 improves the heating effect of the burner on the air passing through the bottom wall of the igniter 10, thereby ensuring the temperature of the flame of the burner. On the other hand, the heat exchange protrusion 20 disturbs the air passing through the bottom wall of the igniter 10 so that at least part of the air forms turbulence, thereby prolonging the contact time between the air and the bottom wall of the igniter 10, thereby causing the air passing through the bottom wall of the igniter 10 to be heated to a higher temperature by the igniter 10, thereby further ensuring the temperature of the flame of the burner. Turbulence, also known as turbulent flow, is a flow state of a fluid. Fluids typically create turbulence when they encounter an obstruction.
[0040] Please refer to Figure 2 and Figure 3 As shown, in some embodiments of the present application, the heat exchange protrusion 20 has a first heat exchange surface, and the first heat exchange surface is arranged in an arched surface.
[0041] The arched configuration of the first heat exchange surface not only makes the first heat exchange surface have a larger area, but also makes the first heat exchange surface smoother. When the air passes through the bottom wall of the ignition divider 10, it can have a larger contact area with the first heat exchange surface, and the air can flow smoothly through the first heat exchange surface and realize the secondary air replenishment in time.
[0042] In some embodiments of the present application, the ratio of the area of the direct projection of the plurality of heat exchange protrusions 20 on the bottom wall of the fire divider 10 along the height direction of the fire divider 10 to the bottom wall area of the fire divider 10 is greater than or equal to 1 / 2 and less than or equal to 3 / 4. Within this range, it is possible to ensure that there are sufficient heat exchange protrusions 20 arranged on the fire divider 10 to heat the air flowing through the bottom wall of the fire divider 10 as much as possible; without too many heat exchange protrusions 20 hindering the smooth flow of air through the bottom wall of the fire divider 10, resulting in insufficient secondary air replenishment.
[0043] It can be understood that the larger the ratio of the area of the direct projection of the heat exchange protrusion 20 on the bottom wall of the ignition divider 10 along the height direction of the ignition divider 10 to the area of the bottom wall of the ignition divider 10, the larger the contact area between the ignition divider 10 and the air passing through the bottom wall of the ignition divider 10, and the better the heating effect of the ignition divider 10 on the air passing through the bottom wall of the ignition divider 10.
[0044] In some embodiments of the present application, the heat exchange protrusion 20 and the ignition divider 10 are sheet metal parts with an integrally formed structure. The ignition divider 10 can be manufactured by punching the heat exchange protrusion 20 on the sheet metal part, and the heat exchange protrusion 20 and the ignition divider 10 can be integrally formed. In addition, the process method of stamping the sheet metal part is simple and reliable, and can be quickly and repeatedly produced.
[0045] Please refer to Figure 2 and Figure 3 As shown, in some embodiments of the present application, the bottom wall of the ignition distributor 10 has a plurality of heat exchange grooves 30 , and the heat exchange grooves 30 are arranged at intervals around the air supplement channel 11 .
[0046] The heat exchange groove 30 increases the contact area between the burner and the air passing through the bottom wall of the igniter 10, that is, the heat exchange groove 30 improves the heating effect of the burner on the air passing through the bottom wall of the igniter 10, thereby ensuring the temperature of the burner flame; on the other hand, the heat exchange groove 30 cooperates with the heat exchange protrusion 20 to disturb the air passing through the bottom wall of the igniter 10 so that at least part of the air forms turbulence, thereby improving the disturbance effect of the heat exchange structure on the air passing through the bottom wall of the igniter 10, further extending the contact time between the air and the bottom wall of the igniter 10, and thereby causing the air passing through the bottom wall of the igniter 10 to be heated to a higher temperature by the igniter 10, thereby further ensuring the temperature of the burner flame.
[0047] It can be understood that, in some embodiments of the present application, only the heat exchange grooves 30 may be provided on the bottom wall of the flame divider 10 without the heat exchange protrusions 20 .
[0048] In some embodiments of the present application, the ratio of the area of the orthographic projection of the heat exchange protrusion 20 on the bottom wall of the fire divider 10 along the height direction of the fire divider 10 to the area of the bottom wall of the fire divider 10 is greater than or equal to 1 / 4 and less than or equal to 3 / 8; the ratio of the area of the orthographic projection of the heat exchange groove 30 on the bottom wall of the fire divider 10 along the height direction of the fire divider 10 to the area of the bottom wall of the fire divider 10 is greater than or equal to 1 / 4 and less than or equal to 3 / 8, that is, the ratio of the sum of the areas of the orthographic projections of the heat exchange protrusion 20 and the heat exchange groove 30 on the bottom wall of the fire divider 10 along the height direction of the fire divider 10 to the area of the bottom wall of the fire divider 10 is greater than or equal to 1 / 2 and less than or equal to 3 / 4. Within this range, it can be ensured that there are enough heat exchange protrusions 20 arranged on the fire divider 10 to heat the air flowing through the bottom wall of the fire divider 10 as much as possible; without too many heat exchange protrusions 20 hindering the smooth flow of air through the bottom wall of the fire divider 10, resulting in insufficient secondary air replenishment.
[0049] In some embodiments of the present application, a plurality of heat exchange protrusions 20 and a plurality of heat exchange grooves 30 constitute at least one group of heat exchange structures, and the heat exchange protrusions 20 and the heat exchange grooves 30 in one group of heat exchange structures are staggered around the air supply channel 11, and a plurality of groups of heat exchange structures are arranged radially along the ignition divider 10. After the heat exchange protrusions 20 and the heat exchange grooves 30 in each group of heat exchange structures are staggered around the air supply channel 11, the air passing through the bottom wall of the ignition divider 10 can be disturbed as much as possible, so that the air passing through the bottom wall of the ignition divider 10 generates turbulence, thereby prolonging the contact time between the air and the heat exchange protrusions 20 and the heat exchange grooves 30.
[0050] Please refer to Figure 3 and Figure 4 As shown, in other embodiments of the present application, a plurality of heat exchange protrusions 20 constitute at least one group of heat exchange protrusions 20, a plurality of heat exchange grooves 30 constitute at least one group of heat exchange grooves 30, and at least one group of heat exchange protrusions 20 and at least one group of heat exchange grooves 30 are arranged radially along the ignition divider 10. Similarly, when a plurality of groups of heat exchange protrusions 20 and a plurality of groups of heat exchange grooves 30 are arranged radially along the ignition divider 10, the air flowing through the bottom wall of the ignition divider 10 flows in sequence between the surface of the heat exchange protrusions 20 and the grooves of the heat exchange grooves 30, so that the air passing through the bottom wall of the ignition divider 10 can be disturbed as much as possible, so that the air passing through the bottom wall of the ignition divider 10 generates turbulence, thereby prolonging the contact time between the air and the heat exchange protrusions 20 and the heat exchange grooves 30.
[0051] The flame divider 10 is used to divide the flame of the burner into an inner circle and an outer circle flame. Please refer to Figure 2 and Figure 3As shown, in some embodiments of the present application, the ignition divider 10 includes an inner ignition divider ring 13 and an outer ignition divider ring 14, the inner ignition divider ring 13 is provided with an inner gas channel 131, the inner ignition divider ring 13 is provided with an inner fire hole 132 connected to the inner gas channel 131, the outer ignition divider ring 14 is arranged around the inner ignition divider ring 13, the inner ignition divider ring 14 is provided with an outer gas channel 141, the outer ignition divider ring 14 is provided with an outer fire hole 142 connected to the outer gas channel 141, the air supply channel 11 is located between the outer gas channel 141 and the inner gas channel 131, and the heat exchange protrusion 20 is fixed to the lower surface of the outer ignition divider ring 14.
[0052] The gas flows to the top of the fire dividing inner ring 13 and burns through the inner gas channel 131 and the inner fire hole 132. It can be understood that there are multiple inner fire holes 132, and the multiple inner fire holes 132 are evenly distributed along the circumference of the fire dividing inner ring 13 so that the fire dividing inner ring 13 produces a uniform flame so that the pot can be evenly heated. Similarly, the gas flows to the top of the fire dividing outer ring 14 and burns through the inner gas channel 131 and the outer fire hole 142. It can be understood that there are multiple outer fire holes 142, and the multiple outer fire holes 142 are evenly distributed along the circumference of the fire dividing outer ring 14 so that the fire dividing outer ring 14 produces a uniform flame so that the pot can be evenly heated.
[0053] Please refer to Figure 2 and Figure 3 As shown, in some embodiments of the present application, the ignition divider 10 also includes a plurality of heat exchange parts 15, which are located between the ignition divider inner ring 13 and the ignition divider outer ring 14, and are respectively connected to the outer peripheral side of the ignition divider inner ring 13 and / or the inner peripheral side of the ignition divider outer ring 14. The plurality of heat exchange parts 15 can further heat the air entering the air supply channel 11 to further ensure the flame temperature of the burner.
[0054] The shape of the heat exchange portion 15 is not limited in the embodiment of the present application. The heat exchange portion 15 can be a plurality of protrusions protruding on the outer circumference of the fire dividing inner ring 13 or the inner circumference of the fire dividing outer ring 14, or can be other shapes. Figure 3 and Figure 4 As shown, in some embodiments of the present application, the heat exchange part 15 can simultaneously connect the ignition division inner ring 13 and the ignition division outer ring 14 to fixedly connect the ignition division inner ring 13 and the ignition division outer ring 14. At this time, the heat exchange part 15 can not only heat the air passing through the air supply channel 11, but also realize the fixed connection of the ignition division inner ring 13 and the ignition division outer ring 14.
[0055] In a second aspect, an embodiment of the present application provides a gas stove, which includes a burner as described above.
[0056] Based on the gas stove in the embodiment of the present application, since it has the above-mentioned burner, the air for secondary air supply can be preheated by the burner to ensure the temperature of the burner flame.
[0057] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0058] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A burner, characterized in that: include: A fire distributor, wherein an air supply channel is formed inside the fire distributor, and the air supply channel is used to provide secondary air, and an air inlet communicating with the air supply channel is provided at the bottom of the fire distributor; A plurality of heat exchange protrusions are provided on the bottom wall of the fire distributor and are arranged at intervals around the air supply channel.
2. The burner according to claim 1, characterized in that The heat exchange protrusion has a first heat exchange surface, and the first heat exchange surface is arranged in an arched surface.
3. The burner according to claim 1, characterized in that The ratio of the area of the orthographic projections of the plurality of heat exchange protrusions on the bottom wall of the ignition divider along the height direction of the ignition divider to the area of the bottom wall of the ignition divider is greater than or equal to 1 / 2 and less than or equal to 3 / 4.
4. The burner according to claim 1, characterized in that The heat exchange protrusion and the fire distributor are sheet metal parts of an integrally formed structure.
5. The burner according to claim 1, characterized in that The bottom wall of the fire distributor has a plurality of heat exchange grooves, and the heat exchange grooves are arranged at intervals around the air supplement channel.
6. The burner according to claim 5, characterized in that The ratio of the area of the orthographic projection of the heat exchange protrusion along the height direction of the fire divider on the bottom wall of the fire divider to the area of the bottom wall of the fire divider is greater than or equal to 1 / 4 and less than or equal to 3 / 8; the ratio of the area of the orthographic projection of the heat exchange groove along the height direction of the fire divider on the bottom wall of the fire divider to the area of the bottom wall of the fire divider is greater than or equal to 1 / 4 and less than or equal to 3 / 8.
7. The burner according to claim 5, characterized in that A plurality of the heat exchange protrusions and a plurality of the heat exchange grooves constitute at least one group of heat exchange structures, the heat exchange protrusions and the heat exchange grooves in one group of the heat exchange structures are alternately arranged around the air supply channel, and a plurality of groups of the heat exchange structures are arranged along the radial direction of the ignition distributor; or, A plurality of the heat exchange protrusions constitute at least one group of the heat exchange protrusions, a plurality of the heat exchange grooves constitute at least one group of the heat exchange grooves, and at least one group of the heat exchange protrusions and at least one group of the heat exchange grooves are arranged along the radial direction of the ignition distributor.
8. The burner according to any one of claims 5 to 7, characterized in that: The fire distributor comprises: A fire dividing inner ring, wherein an internal gas channel is provided inside the fire dividing inner ring, and the fire dividing inner ring is provided with an internal fire hole communicating with the internal gas channel; A fire separation outer ring is arranged around the fire separation inner ring, an external gas channel is arranged inside the fire separation outer ring, the fire separation outer ring is provided with an external fire hole communicating with the external gas channel, and the gas supplement channel is located between the external gas channel and the internal gas channel; The heat exchange protrusion and the heat exchange groove are arranged on the lower surface of the fire distribution outer ring.
9. The burner according to claim 8, characterized in that The fire distributor also includes: A plurality of heat exchange parts are located between the ignition dividing inner ring and the ignition dividing outer ring and are respectively connected to the outer peripheral side of the ignition dividing inner ring or the inner peripheral side of the ignition dividing outer ring.
10. A gas stove, characterized in that: include: A burner as claimed in any one of claims 1 to 9.