Fire cover and burner having the same

Abstract

The application discloses a fire cover and a burner with the same. The fire cover is formed in a ring shape, and is provided with a large fire hole for providing a large fire and a small fire hole for providing a small fire. The large fire hole and the small fire hole are arranged along the circumference of the fire cover, and are arranged to form an outer ring of the small fire and an inner ring of the large fire. According to the fire cover, the large fire hole and the small fire hole on the ring-shaped fire cover are arranged to form an outer ring of the small fire and an inner ring of the large fire, so that when the small fire burns in the outer ring, the heated area is large, the heat dissipation of the flame is large, the energy efficiency is low, the heated object can be maintained at a lower temperature and is not heated, and therefore the use experience of the user can be improved.

Description

Technical Field

[0001] This invention relates to the field of kitchen utensils, and in particular to a burner cap and a burner having the same. Background Technology

[0002] In related technologies, the fire zone of the burner cap is mostly with the large flame on the outside and the small flame on the inside. This setting results in a small heating area for the small flame, making it difficult to maintain a low heating temperature. This causes the fire to be too concentrated on the bottom of the pan, which leads to a poor cooking experience for users when cooking scenarios such as making pancakes. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a flame cap that has the advantages of a large heating area during low-heat combustion and the ability to maintain a relatively low heating temperature.

[0004] Another object of the present invention is to provide a burner having the above-described flame cap.

[0005] According to an embodiment of the present invention, the flame cap is formed in an annular shape, and the flame cap is provided with a large flame hole for providing a large flame and a small flame hole for providing a small flame. The large flame hole and the small flame hole are both arranged along the circumference of the flame cap, and the large flame hole and the small flame hole are arranged to form a small flame from the outer ring and a large flame from the inner ring.

[0006] According to an embodiment of the present invention, the flame cap, by arranging the large and small flame holes on the annular flame cap to allow the outer ring to emit a small flame and the inner ring to emit a large flame, allows the outer ring to emit a small flame, resulting in a large heating area, a large heat dissipation of the flame, and low energy efficiency. This allows the heated object to maintain a low temperature without overheating, thereby improving the user experience.

[0007] According to some embodiments of the present invention, both the large flame hole and the small flame hole are disposed on the outer peripheral wall of the flame cap, wherein the large flame hole is located above the small flame hole; or the small flame hole is disposed on the outside of the large flame hole in the radial direction of the flame cap.

[0008] In some embodiments of the present invention, the outlet of the small flame hole is configured as a fine groove extending circumferentially along the outer peripheral wall of the flame cap; or the small flame hole includes a plurality of small flame holes spaced apart circumferentially along the flame cap, the outlets of the plurality of small flame holes being spaced apart circumferentially along the outer peripheral wall of the flame cap, and the outlet size of the small flame hole being smaller than the outlet size of the large flame hole; or the outer peripheral wall of the flame cap is provided with multiple rows of large flame holes arranged vertically, and each row includes a plurality of large flame holes spaced apart circumferentially along the flame cap, and the size of the large flame holes in the upper row is not smaller than the size of the large flame holes in the lower row, and adjacent rows of large flame holes are arranged alternately or vertically opposite each other.

[0009] In some embodiments of the present invention, the inlet of the small flame hole is located on the lower surface of the flame cap, and the small flame hole extends along a curved direction, along a zigzag direction, or along a diagonal direction.

[0010] According to some embodiments of the present invention, the lower surface of the flame cap has a first groove extending along the circumferential direction of the flame cap, and the small flame hole is configured to have a plurality of notches spaced apart along the circumferential direction of the flame cap on the outer peripheral surface of the first groove, and the plurality of notches are configured into a toothed structure at the lower edge of the outer peripheral surface of the first groove.

[0011] According to some embodiments of the present invention, the lower surface of the flame cap has a second groove extending along the circumferential direction of the flame cap, and the inlet of the large flame hole communicates with the second groove.

[0012] According to some embodiments of the present invention, the inner circumferential surface of the flame cap is provided with a plurality of inner annular flame holes spaced apart along the circumferential direction of the flame cap.

[0013] According to some embodiments of the present invention, the inner peripheral surface of the flame cap is formed as a conical surface with a radial dimension that gradually increases from bottom to top; and / or the outer peripheral wall of the flame cap is formed as a conical surface with a radial dimension that gradually decreases from bottom to top.

[0014] According to some embodiments of the present invention, the outer peripheral wall of the flame cap includes a first wall surface and a second wall surface in the direction from top to bottom. The first wall surface is formed as a conical surface with a radial dimension that gradually increases from top to bottom. The large flame hole is disposed on the first wall surface, the second wall surface is a cylindrical surface, and the small flame hole is disposed at the junction of the first wall surface, the second wall surface, or the first wall surface and the second wall surface.

[0015] According to some embodiments of the present invention, the flame cover is a single piece.

[0016] According to some embodiments of the present invention, the bottom of the flame cap is provided with a first annular rib, and the inner circumference of the flame cap is provided with a second annular rib. The second annular rib forms a second central hole of the flame cap. The outer peripheral wall of the first annular rib is flush with or recessed relative to the outer peripheral wall of the flame cap. The inlet of the small flame hole is located on the bottom surface of the first annular rib, and the inlet of the large flame hole connects to the space between the first annular rib and the second annular rib. Alternatively, a third annular rib is provided between the first annular rib and the second annular rib, the inlet of the small flame hole connects to the space between the first annular rib and the third annular rib, and the inlet of the large flame hole connects to the space between the second annular rib and the third annular rib.

[0017] According to an embodiment of the present invention, a burner includes: a burner head, the burner head being annular, wherein an inner annular chamber and an outer annular chamber extending in a circumferential direction are formed within the burner head, the outer annular chamber surrounding the outer side of the inner annular chamber; and a flame cap, the flame cap covering the burner head, the flame cap being the aforementioned flame cap, wherein a large flame hole communicates with the inner annular chamber, and a small flame hole communicates with the outer annular chamber.

[0018] According to the present invention, the burner, by arranging the large and small flame holes on the annular flame cap to facilitate the small flame from the outer ring and the large flame from the inner ring, allows for a large heating area and a large heat dissipation of the flame when the small flame burns in the outer ring, resulting in low energy efficiency. This allows the burner to maintain a low temperature on the object being heated without overheating, thereby improving the user experience.

[0019] According to some embodiments of the present invention, the burner head includes a first annular plate, a second annular plate, and a third annular plate. The second annular plate is sleeved outside the first annular plate to define the inner annular chamber, and the third annular plate is sleeved on the second annular plate to define the outer annular chamber. The bottom of the burner cap is provided with a first annular rib, and the inner circumference of the burner cap is provided with a second annular rib. The second annular rib forms a second central hole in the burner cap. The outer peripheral wall of the first annular rib is flush with or recessed relative to the outer peripheral wall of the burner cap. The outer peripheral wall of the first annular rib fits against the inner peripheral wall of the third annular plate, and the inner peripheral wall of the first annular rib fits against the outer peripheral wall of the second annular plate. The outer peripheral wall of the first ring plate is in contact with the inner peripheral wall of the first ring plate. The inlet of the small flame hole is located on the bottom surface of the first ring rib, and the inlet of the large flame hole connects to the space between the first ring rib and the second ring rib; or a third ring rib is provided between the first ring rib and the second ring rib, the outer peripheral wall of the first ring rib is in contact with the inner peripheral wall of the third ring plate, the inner peripheral wall of the third ring rib is in contact with the outer peripheral wall of the second ring plate, the outer peripheral wall of the second ring rib is in contact with the inner peripheral wall of the first ring plate, the inlet of the small flame hole connects to the space between the first ring rib and the third ring rib, and the inlet of the large flame hole connects to the space between the second ring rib and the third ring rib.

[0020] According to some embodiments of the present invention, the second central hole of the burner head communicates with the first central hole of the burner cap, and the burner further includes: a cover plate, the cover plate covering the burner cap and being vertically opposite to the second central hole, the cover plate having a gap with the burner cap to define an air passage, the air passage communicating with the first central hole and guiding air outward along the radial direction of the burner cap.

[0021] In some embodiments of the present invention, the cover plate includes: a plate body that covers the upper part of the second central hole and cooperates with the flame cap to define the air passage; and a plurality of support ribs that are connected to the lower surface of the cover plate and are spaced apart along the circumferential direction of the plate body, the support ribs being supported on the flame cap.

[0022] According to some embodiments of the present invention, the burner head further includes an extension chamber, which communicates with the inner annular chamber and extends through the outer annular chamber to the outside of the outer annular chamber. The burner further includes an ejector, which includes a small flame ejector tube and a large flame ejector tube. Both the small flame ejector tube and the large flame ejector tube are connected to the outer periphery of the burner head. The small flame ejector tube communicates with the outer annular chamber, and the large flame ejector tube communicates with the extension chamber.

[0023] In some embodiments of the present invention, the axis of the large fire ejector is parallel to the axis of the small fire ejector.

[0024] According to some embodiments of the present invention, it further includes: an anti-dry-burning device, the anti-dry-burning device being connected to the burner head, the probe of the anti-dry-burning device extending upward through the burner head into the first central hole of the burner cap.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a perspective view of a burner according to an embodiment of the present invention;

[0028] Figure 2 This is an exploded view of a burner according to an embodiment of the present invention;

[0029] Figure 3 This is a cross-sectional view of a burner according to an embodiment of the present invention (excluding the anti-dry-burning probe);

[0030] Figure 4 This is a cross-sectional view of the burner according to the present invention from another angle;

[0031] Figure 5 This is a perspective view of the burner cover plate according to an embodiment of the present invention;

[0032] Figure 6 This is a perspective view of the burner head of a burner according to an embodiment of the present invention;

[0033] Figure 7 This is a perspective view of the burner head of the burner according to an embodiment of the present invention from another angle;

[0034] Figure 8 This is a top view of the burner head according to an embodiment of the present invention;

[0035] Figure 9 This is a perspective view of the anti-dry-burning probe and positioning bracket of the burner according to an embodiment of the present invention;

[0036] Figure 10 This is a front view of the burner cap of a burner according to an embodiment of the present invention;

[0037] Figure 11 This is a cross-sectional view of the burner cap of a burner according to an embodiment of the present invention;

[0038] Figure 12 This is a front view of the burner cap of a burner according to another embodiment of the present invention;

[0039] Figure 13 This is a cross-sectional view of the burner cap of a burner according to another embodiment of the present invention;

[0040] Figure 14 This is a front view of the burner cap of a burner according to yet another embodiment of the present invention;

[0041] Figure 15 This is a cross-sectional view of the burner cap of a burner according to yet another embodiment of the present invention;

[0042] Figure 16 This is a front view of the burner cap of a burner according to another embodiment of the present invention;

[0043] Figure 17 This is a cross-sectional view of the burner cap of a burner according to another embodiment of the present invention.

[0044] Figure label:

[0045] 100. Burner;

[0046] 1. Burner head; 11. First annular plate; 12. Second annular plate; 13. Third annular plate; 14. Gas supply chamber; 141. Inner annular chamber; 142. Outer annular chamber; 143. Extension chamber; 15. First central hole; 16. Positioning bracket; 161. First mounting component; 162. Second mounting component; 163. Mounting hole; 164. Positioning plate; 165. Through hole; 166. Mounting groove; 17. Positioning hole;

[0047] 2. Flame cap; 21. Outer peripheral wall; 211. First wall surface; 212. Second wall surface; 213. Large flame hole; 2131. Large inlet; 214. Small flame hole; 2141. Small inlet; 2142. Small outlet; 215. Flame stabilizing hole; 22. Inner peripheral surface; 221. Second center hole; 222. Inner ring flame hole; 23. First annular rib; 24. Second annular rib; 25. Clearance groove; 26. Platform; 27. First groove; 271. Notch; 28. Second groove; 29. ​​Third annular rib;

[0048] 3. Cover plate; 31. Plate body; 311. Waterproof eaves; 32. Supporting ribs; 33. Air passage; 34. Clearance hole; 35. Cylinder body;

[0049] 4. Anti-dry-burning probe; 41. Probe; 42. Connecting rod;

[0050] 5. Ejector; 51. Small flame ejector tube; 52. Large flame ejector tube; 53. Intermediate connecting plate; 54. Bolt hole. Detailed Implementation

[0051] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] The following description refers to the fire cover 2 according to an embodiment of the present invention.

[0055] like Figure 10 As shown, according to an embodiment of the present invention, the flame cap 2 is formed as a ring. The flame cap 2 is provided with a large flame hole 213 for providing a large flame and a small flame hole 214 for providing a small flame. The large flame hole 213 and the small flame hole 214 are both arranged along the circumference of the flame cap 2, and the large flame hole 213 and the small flame hole 214 are arranged to form a small flame on the outer ring and a large flame on the inner ring.

[0056] Specifically, the burner cap 2 is constructed in a ring shape. Since the burner cap 2 has a large flame hole 213 and a small flame hole 214, both arranged circumferentially around the burner cap 2, with the small flame hole 214 located outside the large flame hole 213, when the gas passing through these holes is ignited, the large flame hole 213 provides a large ring flame within the inner ring of the burner cap 2, while the small flame hole 214 provides a small ring flame within the outer ring of the burner cap 2. This arrangement allows for a wider distribution of the small flame on the outer ring, resulting in higher thermal efficiency and preventing the flame from concentrating too much on the bottom of the pot, leading to more even heating of the pot bottom and a better cooking experience for the user.

[0057] According to the embodiment of the present invention, the flame cap 2, by arranging the large flame hole 213 and the small flame hole 214 on the annular flame cap 2 to be suitable for the small flame to come out of the outer ring and the large flame to come out of the inner ring, allows the heating area to be large and the heat dissipation of the flame to be large when the small flame in the outer ring is burning, resulting in low energy efficiency. This can maintain a low temperature on the heated object without raising the temperature, thereby improving the user experience.

[0058] According to an embodiment of the present invention, the fire cap 2, such as Figure 10As shown, both the large flame hole 213 and the small flame hole 214 are disposed on the outer peripheral wall 21 of the flame cap 2, wherein the large flame hole 213 is located above the small flame hole 214; or the small flame hole 214 is disposed outside the large flame hole 213 in the radial direction of the flame cap 2. Specifically, the large flame hole 213 and the small flame hole 214 can be evenly disposed on the outer peripheral wall 21 of the flame cap 2. For example, when the flame cap 2 is formed as a cylinder, the large flame hole 213 can be located above the small flame hole 214, or when the outer peripheral wall 21 of the flame cap 2 is formed as a conical surface, the small flame hole 214 is located outside the large flame hole 213 in the radial direction of the flame cap 2. By disposing the large flame hole 213 and the small flame hole 214 on the outer peripheral wall 21 of the flame cap 2, the heating area of ​​the flame cap 2 is increased, and the small flame hole 214 can also stabilize the flame of the large flame hole 213.

[0059] According to an embodiment of the present invention, the fire cap 2, such as Figure 10 and Figure 11 As shown, the small outlet 2142 of the small flame hole 214 is constructed as a fine groove extending circumferentially along the outer peripheral wall 21 of the flame cap 2. By providing an annular fine groove on the flame cap 2, the flame formed by the small flame hole 214 can stabilize the flame formed by the large flame hole 213, thus avoiding the problem of flame lift-off and flame detachment of the gas in the large flame hole 213.

[0060] According to an embodiment of the present invention, the fire cap 2, such as Figure 16 and Figure 17 As shown, the small flame holes 214 include a plurality of holes spaced apart along the circumference of the flame cap 2. The small outlets 2142 of the plurality of small flame holes 214 are spaced apart along the circumference of the flame cap 2 on the outer peripheral wall 21 of the flame cap 2, and the size of the small outlets 2142 of the small flame holes 214 is smaller than the size of the large outlets 2142 of the large flame holes 213. By providing a plurality of small flame holes 214 on the outer peripheral wall 21 of the flame cap 2, the flame stabilization effect on the large flame holes 213 can be improved, while the manufacturing process is simple and costs can be reduced. In the description of this invention, "a plurality of" means two or more. For example, the number of small flame holes 214 can be two, three, four, etc. The specific number of the plurality of small flame holes 214 can be adjusted according to the specific specifications and model of the flame cap 2.

[0061] For example, in such Figure 16 and Figure 17 In the embodiment shown, the small outlets 2142 of the multiple small flame holes 214 are circular and are arranged at intervals along the circumference of the flame cover 2 on the outer peripheral wall 21 of the flame cover 2. This arrangement can reduce the difficulty of processing and improve the efficiency of processing.

[0062] According to an embodiment of the present invention, the fire cap 2, such as Figures 10-17As shown, the outer peripheral wall 21 of the flame cap 2 is provided with multiple rows of large flame holes 213 arranged vertically. Each row includes multiple large flame holes 213 spaced apart along the circumference of the flame cap 2. The size of the large flame holes 213 in the upper row is not smaller than that in the lower row. Adjacent rows of large flame holes 213 are arranged alternately or vertically opposite each other. The multiple rows of large flame holes 213 can be two, three, four, etc., and the number of rows can be adjusted according to the specific specifications of the flame cap 2. The size of the large flame holes 213 in the upper row can be larger than that in the lower row, or the size can be equal to that in the lower row. Adjacent rows of large flame holes 213 can be arranged alternately or vertically opposite each other.

[0063] For example, in such Figure 12 Figure 14 In the embodiment shown, the outer peripheral wall 21 of the flame cap 2 is provided with two rows of large flame holes 213, and the large flame holes 213 in the lower row are formed as flame stabilizing holes 215. Figure 12 The size of the upper row of large flame holes 213 is equal to the size of the lower row of large flame holes 213. Figure 14 The upper row of large flame holes 213 is larger than the lower row of large flame holes 213. The adjacent rows of large flame holes 213 are arranged in an alternating manner. This arrangement can further improve the flame stabilization effect of the large flame holes 213, and at the same time, it can also make the heating uniformity of the flame cover 2 better.

[0064] According to an embodiment of the present invention, the fire cap 2, such as Figures 10-17 As shown, the inlet of the small flame hole 214 is located on the lower surface of the flame cap 2. The small flame hole 214 extends along a curved direction, along a zigzag direction, or along a diagonal direction. Specifically, the small flame hole 214 can extend along a curved direction to the lower surface of the flame cap 2 to form a small outlet 2142, or it can extend along a zigzag direction to the lower surface of the flame cap 2 to form a small outlet 2142, or it can extend along a diagonal direction to the lower surface of the flame cap 2 to form a small outlet 2142. By using different methods to form the small outlet 2142 on the lower surface of the flame cap 2, the diversity of the structure of the small flame hole 214 can be increased.

[0065] For example, in such Figure 10 and Figure 11 In the embodiment shown, when the small outlet 2142 of the small flame hole 214 is an annular groove, a hole can be drilled vertically upwards from the lower surface of the flame cap 2 to communicate with the groove, such as... Figure 12 and Figure 13 As shown, a hole can also be drilled upwards at a certain angle to connect with the groove, so that the small flame hole 214 extends along the zigzag direction to the lower surface of the flame cap 2 to form a small outlet 2142. Figure 16 and Figure 17In the embodiment shown, the small outlet 2142 of the small flame hole 214 is a circular hole. The outer peripheral wall 21 of the flame cap 2 can be connected to the lower surface of the flame cap 2 by drilling, so that the small flame hole 214 extends along the oblique direction to the lower surface of the flame cap 2 to form a small inlet 2141.

[0066] According to an embodiment of the present invention, the fire cap 2, such as Figure 14 and 15 As shown, the lower surface of the flame cap 2 has a first groove 27, which extends along the circumferential direction of the flame cap 2. The small flame hole 214 is constructed on the outer circumferential surface of the first groove 27 and has a plurality of notches 271 spaced apart along the circumferential direction of the flame cap 2. The plurality of notches 271 are formed into a toothed structure at the lower edge of the outer circumferential surface of the first groove 27. Specifically, the lower surface of the flame cap 2 has a first groove 27, which extends along the circumferential direction of the flame cap 2 to form an annular groove. The plurality of notches 271 are spaced apart along the circumferential direction of the flame cap 2 on the outer circumferential surface of the first groove 27. The first groove 27 is also the small inlet 2141 of the small flame hole 214, and the notches 271 on the first groove 27 are the small outlets 2142 of the small flame hole 214. By setting the small flame hole 214 as a toothed structure, since the toothed flame hole is elongated in the vertical direction, compared with the circular flame hole, the toothed flame hole is longer in the height direction of the flame cap 2, which can form a flame with greater firepower, and at the same time, it is easier for the small flame hole 214 to replenish secondary air.

[0067] According to an embodiment of the present invention, the fire cap 2, such as Figures 10-17 As shown, the lower surface of the burner cap 2 has a second groove 28, which extends along the circumferential direction of the burner cap 2. The large inlet 2131 of the large flame hole 213 communicates with the second groove 28. Specifically, the lower surface of the burner cap 2 is provided with a second groove 28, which is formed as an annular groove extending along the circumferential direction of the burner cap 2. The large inlet 2131 of the large flame hole 213 communicates with the second groove 28. Since the burner 100 of the present invention has a large flame in the inner ring and a small flame in the outer ring, the second groove 28 is located inside the first groove 27. By providing a second groove 28 on the burner cap 2, the gas has a larger storage space, thereby ensuring sufficient gas supply during combustion in the large flame hole 213.

[0068] According to an embodiment of the present invention, the fire cap 2, such as Figure 17As shown, the inner circumferential surface 22 of the burner cap 2 is provided with a plurality of inner ring flame holes 222 spaced apart along the circumferential direction of the burner cap 2. By providing inner ring flame holes 222 on the inner circumferential surface 22 of the burner cap 2, the burner cap 2 can achieve multi-ring flame heating, which can improve the heating uniformity of the burner 100. The angle between the length direction of the cross-section of the inner ring flame hole 222 and the horizontal plane can be 30°-85°. For example, the angle between the length direction of the cross-section of the inner ring flame hole 222 and the horizontal plane can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, or 85°, etc.

[0069] According to an embodiment of the present invention, the fire cap 2, such as Figure 2 and Figure 11 As shown, the inner peripheral surface 22 of the flame cap 2 is formed as a conical surface with a radial dimension that gradually increases from bottom to top; and / or the outer peripheral wall 21 of the flame cap 2 is formed as a conical surface with a radial dimension that gradually decreases from bottom to top. Specifically, the inner peripheral surface 22 of the flame cap 2 may be formed as a conical surface with a radial dimension that gradually increases from bottom to top, or the outer peripheral wall 21 of the flame cap 2 may be formed as a conical surface with a radial dimension that gradually decreases from bottom to top, or the inner peripheral surface 22 of the flame cap 2 may be formed as a conical surface with a radial dimension that gradually increases from bottom to top and the outer peripheral wall 21 of the flame cap 2 may be formed as a conical surface with a radial dimension that gradually decreases from bottom to top.

[0070] For example, in Figure 2 and Figure 11 In the embodiment shown, the inner peripheral surface 22 of the flame cap 2 is formed as a conical surface with a radial dimension that gradually increases from bottom to top, and the outer peripheral wall 21 of the flame cap 2 is formed as a conical surface with a radial dimension that gradually decreases from bottom to top.

[0071] According to an embodiment of the present invention, the fire cap 2, such as Figures 10-17 As shown, the outer peripheral wall 21 of the burner cap 2 includes a first wall surface 211 and a second wall surface 212 in the top-to-bottom direction. The first wall surface 211 is formed as a conical surface with its radial dimension gradually increasing from top to bottom. A large flame hole 213 is located on the first wall surface 211, the second wall surface 212 is a cylindrical surface, and a small flame hole 214 is located at the junction of the first wall surface 211, the second wall surface 212, or the junction of the first wall surface 211 and the second wall surface 212. Specifically, the large flame hole 213 is located on the first wall surface 211, and the small flame hole 214 can be located on the first wall surface 211, the second wall surface 212, or the junction of the first wall surface 211 and the second wall surface 212. This arrangement allows for a certain height difference between the flames formed by the large flame hole 213 and the small flame hole 214 and the cookware, enabling the outer flame of the flame to heat the cookware. Thus, because the outer flame of the flame has a higher temperature, the heating effect on the cookware is better.

[0072] For example, in Figures 10-13In the illustrated embodiment, the large flame hole 213 is located on the first wall surface 211, and the small flame hole 214 is located at the junction of the first wall surface 211 and the second wall surface 212. Figure 14 and Figure 15 In the illustrated embodiment, the large flame hole 213 is located on the first wall surface 211, and the small flame hole 214 is located on the second wall surface 212. Figure 16 and Figure 17 In the embodiment shown, the large flame hole 213 is provided on the first wall surface 211, and the small flame hole 214 is also provided on the first wall surface 211.

[0073] According to an embodiment of the present invention, the flame cover 2 is a single piece. By making the flame cover 2 a single piece, it is easy to form, simple to manufacture, and eliminates unnecessary connecting processes. Specifically, the flame cover 2 can be made of aluminum or copper into a single structure. Aluminum has good hot working performance and low cost, while copper has high temperature resistance, which can ensure the service life of the flame cover 2. At the same time, the flame cover 2 can be manufactured by casting and hot forging. Thus, the simple manufacturing method can effectively reduce the production cost of the flame cover 2 and improve production efficiency.

[0074] According to an embodiment of the present invention, the fire cap 2, such as Figure 10 and Figure 11 As shown, the bottom of the flame cap 2 is provided with a first annular rib 23, and the inner circumference of the flame cap 2 is provided with a second annular rib 24. The second annular rib 24 forms the second central hole 221 of the flame cap 2. The outer peripheral wall of the first annular rib 23 is flush with or recessed relative to the outer peripheral wall 21 of the flame cap 2. The inlet of the small flame hole 214 is located on the bottom surface of the first annular rib 23, and the inlet of the large flame hole 213 connects to the space between the first annular rib 23 and the second annular rib 24. Specifically, the outer peripheral wall of the first annular rib 23 can be flush with or recessed relative to the outer peripheral wall 21 of the flame cap 2. This arrangement allows the flame cap 2 to be constructed in an annular shape, with the second central hole 221 formed on the inner side of the flame cap 2. At the same time, the first annular rib 23 of the flame cap 2 can be directly used as a mating surface, simplifying processing, saving materials, and reducing costs.

[0075] For example, in Figure 10 and Figure 11 In the embodiment shown, the bottom of the flame cap 2 is provided with a first annular rib 23. The small flame hole 214 is extended to the lower surface of the first annular rib 23 by drilling, thereby constructing a small outlet 2142 of the small flame hole 214 on the lower surface of the first annular rib 23. The outer peripheral wall of the first annular rib 23 is recessed relative to the outer peripheral wall 21 of the flame cap 2. The space between the first annular rib 23 and the second annular rib 24 is connected to the large inlet 2131 of the large flame hole 213.

[0076] According to an embodiment of the present invention, the fire cap 2, such as Figures 12-17 As shown, a third annular rib 29 is provided between the first annular rib 23 and the second annular rib 24. The inlet of the small flame hole 214 connects to the space between the first annular rib 23 and the third annular rib 29, and the inlet of the large flame hole 213 connects to the space between the second annular rib 24 and the third annular rib 29. This arrangement allows the lower surface of the flame cap 2 to be used as an independent mating surface, which can save materials and reduce costs.

[0077] For example, in Figure 13 In the illustrated embodiment, the outer peripheral wall of the first annular rib 23 is recessed relative to the outer peripheral wall 21 of the flame cap 2; the space between the first annular rib 23 and the third annular rib 29 communicates with the small inlet 2141 of the small flame hole 214; and the space between the second annular rib 24 and the third annular rib 29 communicates with the large inlet 2131 of the large flame hole 213. Figure 14 In the embodiment shown, the outer peripheral wall of the first annular rib 23 is flush with the outer peripheral wall 21 of the flame cap 2, the space between the first annular rib 23 and the third annular rib 29 is connected to the small inlet 2141 of the small flame hole 214, and the space between the second annular rib 24 and the third annular rib 29 is connected to the large inlet 2131 of the large flame hole 213.

[0078] The burner 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0079] The burner 100 according to an embodiment of the present invention, such as Figure 2 , Figure 4 and Figure 6 As shown, the burner includes: a burner head 1 and the aforementioned burner cap 2. The burner head 1 is annular, and an inner annular chamber 141 and an outer annular chamber 142 extending in the circumferential direction of the burner head 1 are formed therein. The outer annular chamber 142 surrounds the outer side of the inner annular chamber 141. The burner cap 2 covers the burner head 1, and the burner cap 2 is any of the burner caps mentioned above. The large burner hole 213 communicates with the inner annular chamber 141, and the small burner hole 214 communicates with the outer annular chamber 142. Specifically, the burner head 1 has a first central hole 15 and a gas supply chamber 14 surrounding the first central hole 15. The gas supply chamber 14 includes an inner annular chamber 141 and an outer annular chamber 142. The inner annular chamber 141 communicates with the large burner hole 213, and the outer annular chamber 142 communicates with the small burner hole 214. This arrangement allows the burner 100 to supply gas independently to the small burner hole 214 and the large burner hole 213.

[0080] According to the present invention, the burner 100, by arranging the large flame hole 213 and the small flame hole 214 on the annular flame cap 2 to be suitable for the small flame to come out of the outer ring and the large flame to come out of the inner ring, allows the heating area to be large and the heat dissipation of the flame to be large when the small flame in the outer ring is burning, resulting in low energy efficiency. It can maintain a low temperature on the heated object without raising the temperature, thereby improving the user experience.

[0081] The burner 100 according to an embodiment of the present invention, such as Figure 4 and Figure 6 As shown, the burner head 1 includes a first annular plate 11, a second annular plate 12, and a third annular plate 13. The second annular plate 12 is fitted outside the first annular plate 11 to define an inner annular chamber 141, and the third annular plate 13 is fitted inside the second annular plate 12 to define an outer annular chamber 142. The burner cover 2... The bottom of the flame cap 2 is provided with a first annular rib 23, and the inner circumference of the flame cap 2 is provided with a second annular rib 24. The second annular rib 24 forms the second central hole 221 of the flame cap 2. The outer circumferential wall of the first annular rib 23 is flush with or recessed relative to the outer circumferential wall 21 of the flame cap 2. The outer circumferential wall of the first annular rib 23 is in contact with the inner circumferential wall of the third annular plate 13, the inner circumferential wall of the first annular rib 23 is in contact with the outer circumferential wall of the second annular plate 12, and the outer circumferential wall of the second annular rib 24 is in contact with the inner circumferential wall of the first annular plate 11. The inlet of the small flame hole 214 is located on the bottom surface of the first annular rib 23, and the inlet of the large flame hole 213 connects to the space between the first annular rib 23 and the second annular rib 24.

[0082] For example, in Figure 2 , Figure 10 and Figure 11In the illustrated embodiment, a large flame hole 213 is provided on the first wall surface 211 of the outer peripheral wall 21 of the flame cap 2, and a small flame hole 214 is provided on the second wall surface 212 of the outer peripheral wall 21. The small outlet 2142 of the small flame hole 214 is configured as a fine groove extending circumferentially along the outer peripheral wall 21 of the flame cap 2. A first annular rib 23 is provided at the bottom of the flame cap 2, and the outer peripheral wall of the first annular rib 23 is recessed relative to the outer peripheral wall 21 of the flame cap 2. A second annular rib 24 is provided along the inner peripheral edge of the flame cap 2. The small inlet 2141 of the small flame hole 214 is located on the bottom surface of the first annular rib 23, and the large inlet 2131 of the large flame hole 213 connects the first annular rib 23 and the second annular rib 24. The space between the ribs 24, the burner head 1 includes a first annular plate 11, a second annular plate 12 and a third annular plate 13. The second annular plate 12 is fitted outside the first annular plate 11 to define the inner annular chamber 141, and the third annular plate 13 is fitted outside the second annular plate 12 to define the outer annular chamber 142. The lower end of the burner cover 2 is also provided with a relief groove 25 for accommodating the first annular plate 11, the second annular plate 12 and the third annular plate 13. The first annular rib 23 is located in the outer annular chamber 142 to form an embedded part, and the lower end of the small flame hole 214 extends to the lower surface of the embedded part. When the burner cap 2 is placed on the burner head 1, the first annular plate 11, the second annular plate 12, and the third annular plate 13 of the burner head 1 correspond to the clearance groove 25 provided at the lower end of the burner cap 2. The first annular rib 23 of the burner cap 2 is located in the outer annular chamber 142. The outer peripheral wall of the first annular rib 23 is in contact with the inner peripheral wall of the third annular plate 13. The inner peripheral wall of the first annular rib 23 is in contact with the outer peripheral wall of the second annular plate 12. The outer peripheral wall of the second annular rib 24 is in contact with the inner peripheral wall of the first annular plate 1. The gas enters the space between the first annular rib 23 and the second annular rib 24 through the inner annular chamber 141, and then enters the large flame hole 213. The gas enters the small flame hole 214 through the small inlet 2141 of the small flame hole 214 below the second annular rib 24 through the outer annular chamber 142.

[0083] The burner 100 according to an embodiment of the present invention, such as Figure 13 and Figure 17 As shown, a third annular rib 29 is provided between the first annular rib 23 and the second annular rib 24. The outer peripheral wall of the first annular rib 23 is attached to the inner peripheral wall of the third annular plate 13, the inner peripheral wall of the third annular rib 29 is attached to the outer peripheral wall of the second annular plate 12, and the outer peripheral wall of the second annular rib 24 is attached to the inner peripheral wall of the first annular plate 11. The inlet of the small flame hole 214 is connected to the space between the first annular rib 23 and the third annular rib 29, and the inlet of the large flame hole 213 is connected to the space between the second annular rib 24 and the third annular rib 29.

[0084] For example, in Figure 13 and 17In the example shown, the bottom of the burner cap 2 is also provided with a third annular rib 29. The third annular rib 29 is located between the first annular rib 23 and the second annular rib 24. The space between the first annular rib 23 and the third annular rib 29 forms a first groove 27, and the space between the third annular rib 29 and the second annular rib 23 forms a second groove 28. The first groove 27 is connected to the small inlet 2141 of the small fire hole 214 and to the outer annular chamber 142 of the burner head 1. The outer peripheral wall of the first annular rib 23 is attached to the inner peripheral wall of the third annular plate 13, and the inner peripheral wall of the third annular rib 29 is attached to the outer peripheral wall of the second annular plate 12. The second groove 28 is connected to the large inlet 2131 of the large fire hole 213 and to the inner annular chamber 141 of the burner head. The outer peripheral wall of the second annular rib 24 is attached to the inner peripheral wall of the first annular plate 11.

[0085] According to some embodiments of the present invention, such as Figure 2 and Figure 10 As shown, the outer peripheral wall 21 of the flame cap 2 is also provided with a flame stabilizing hole 215 communicating with the inner annular chamber 141. In the radial direction of the flame cap 2, the flame stabilizing hole 215 is located between the large flame hole 213 and the small flame hole 214, and the diameter of the flame stabilizing hole 215 is smaller than the diameter of the large flame hole 213. Specifically, the flame stabilizing hole 215 can be located on the first wall surface 211 of the flame cap 2 or on the second wall surface 212 of the flame cap 2. By providing the flame stabilizing hole 215, the flame in the large flame hole 213 can be stabilized during combustion, allowing it to burn continuously and stably, thereby improving thermal efficiency.

[0086] For example, in Figure 2 and Figure 10 In the embodiment shown, the flame stabilizing hole 215 is located on the first wall surface 211 of the burner cap 2, below the large flame hole 213. The flame stabilizing hole 215 and the large flame hole 213 are arranged alternately. This arrangement can prevent the flame from leaving the flame and the flame from detaching during combustion.

[0087] According to an embodiment of the present invention, the burner 100 has a second central hole 221 of the burner head 1 communicating with the first central hole 15 of the burner cap 2. The burner 100 also includes a cover plate 3, which covers the burner cap 2 and is vertically opposite to the second central hole 221. There is a gap between the cover plate 3 and the burner cap 2 to define an air passage 33. The air passage 33 communicates with the first central hole 15 and guides the air outward along the radial direction of the burner cap 2. Specifically, the cover plate 3 covers the burner cap 2 and is vertically opposite to the second central hole 221. There is a gap between the cover plate 3 and the burner cap 2 to define the air passage 33. The air passage 33 is connected to the first central hole 15 and guides the air outward along the radial direction of the burner cap 2. The cover plate 3 is located above the second central hole 221 and covers the burner cap 2. There is a gap between the cover plate 3 and the burner cap 2 to allow air to flow. This gap is the air passage 33. The air passage 33 guides the air flow. The air passage 33 is connected to the first central hole 15 and the second central hole 221. When the burner 100 replenishes air once, a large amount of heat is generated, which heats the air at the bottom of the burner head 1. This causes the hot air at the bottom of the burner head 1 to flow upward from the first central hole 15 to the air passage 33 of the cover plate 3, and then flow out from the air passage 33 along the radial direction of the burner cap 2.

[0088] According to an embodiment of the present invention, the burner 100 has a cover plate 3 on the burner cap 2, which creates a gap between the cover plate 3 and the burner cap 2. At the same time, the first central hole 15 of the burner head 1, the second central hole 221 of the burner cap 2, and the air passage 33 of the cover plate 3 are connected. When the burner 100 replenishes air once, it generates a large amount of heat, which heats the air at the bottom of the burner head 1. This allows the air to flow from the bottom of the burner 100 through the first central hole 15 and the second central hole 221 to the air passage 33 of the cover plate 3, and then flow out radially outward from the air passage 33 of the cover plate 3 along the burner cap 2. This continuously replenishes the burner 100 with secondary air, thereby avoiding the problem of insufficient secondary air replenishment in the burner 100, allowing the gas to burn completely, and improving the user experience.

[0089] According to an embodiment of the burner 100 of the present invention, the cover plate 3 includes: a plate body 31 and a plurality of supporting ribs 32. The plate body 31 covers the upper part of the second central hole 221, and the plate body 31 cooperates with the burner cap 2 to define an air passage 33. The plurality of supporting ribs 32 are connected to the lower surface of the plate body 31 and are spaced apart along the circumferential direction of the plate body 31. The supporting ribs 32 are supported on the burner cap 2. Specifically, the plate body 31 covers the upper part of the second central hole 221, and there is a gap between the plate body 31 and the burner cap 2 to define the air passage 33, allowing air to flow out from the air passage 33. The lower surface of the plate body 31 is provided with a plurality of supporting ribs 32 spaced apart along the circumferential direction of the plate body 31, and the plurality of supporting ribs 32 are in contact with the surface of the burner cap 2. This configuration is simple in structure, easy to assemble and disassemble, and can improve the user experience.

[0090] The outer edge of the plate 31 can form a waterproof eaves 311 that shields the air passage 33, and the multiple supporting ribs 32 can be two, three, four, etc. The specific number of supporting ribs 32 can be adjusted according to the specific specifications and model of the cover plate 3.

[0091] Optionally, the plate 31 and the multiple supporting ribs 32 can be an integral part or separate parts. When the plate 31 and the supporting ribs 32 are an integral part, the stability of the connection between the plate 31 and the supporting ribs 32 can be ensured, and it is convenient to form, simple to manufacture, and eliminates unnecessary connection processes. When the plate 31 and the supporting ribs 32 are separate parts, the plate 31 and the supporting ribs 32 can be connected together by means of bonding, snap-fitting, or welding.

[0092] According to some embodiments of the present invention, the lower end of the support rib 32 is supported on the inner peripheral surface 22 of the flame cover 2. This arrangement makes it easier for the user to place the cover plate 3 on the flame cover 2. Alternatively, the lower end of the support rib 32 may also be partially supported on the inner peripheral surface 22 of the flame cover 2.

[0093] For example, in Figures 2-5 In the illustrated embodiment, plate 31 is located above the second central hole 221 and covers the second central hole 221 and inner peripheral surface 22 of flame cap 2. The outer edge of plate 31 forms a waterproof awning 311 that covers the air passage 33. The lower surface of plate 31 is provided with four supporting ribs 32, which are evenly spaced along the circumferential direction of plate 31. The inner peripheral surface 22 of flame cap 2 is formed as a conical surface with a radial dimension that gradually increases from bottom to top. The connection between the inner peripheral surface 22 of flame cap 2 and the outer peripheral wall 21 of flame cap 2 is a platform 26. The lower ends of the supporting ribs 32 are supported on the inner peripheral surface 22 and the platform 26 of flame cap 2. The lower ends of the supporting ribs 32 of cover plate 3 are formed to fit against the inner peripheral surface 22 and the platform 26 of flame cap 2. This arrangement limits the position of cover plate 3, making it easier for users to install and remove cover plate 3, thus improving the user experience.

[0094] According to an embodiment of the present invention, the burner 100 has an extension chamber 143 in the burner head 1. The extension chamber 143 communicates with the inner ring chamber 141 and extends through the outer ring chamber 142 to the outside of the outer ring chamber 142. The burner 100 also includes an ejector 5, which includes a small flame ejector tube 51 and a large flame ejector tube 52. Both the small flame ejector tube 51 and the large flame ejector tube 52 are connected to the outer periphery of the burner head 1. The small flame ejector tube 51 communicates with the outer ring chamber 142, and the large flame ejector tube 52 communicates with the extension chamber 143.

[0095] Specifically, as shown in Figures 1 and 2, the burner 100 includes a burner head 1 and an ejector 5. The burner head 1 contains an inner annular chamber 141, an outer annular chamber 142, and an extension chamber 143. The outer annular chamber 142 surrounds the outer side of the inner annular chamber 141. In other words, the burner head 1 contains an inner annular chamber 141 for fuel to enter and eject large flames, while the outer annular chamber 142 surrounds the inner annular chamber 141 for fuel to enter and eject small flames. The inner annular chamber 141 and outer annular chamber 142 are concentric circles when viewed from above. They are non-communicating cavities. When arranging the internal volumes of the inner annular chamber 141 and outer annular chamber 142, the radial thickness of the inner annular chamber 141 can be greater than that of the outer annular chamber 142. The thickness in the radial direction ensures that the inner annular chamber 141 has a sufficiently large volume to provide fuel for high-fire combustion in the burner 100. Furthermore, the volume of the outer annular chamber 142 can be smaller than that of the inner annular chamber 141, thus reducing the radial thickness of the outer annular chamber 142. Therefore, through a reasonable design of the radial thicknesses of the outer annular chamber 142 and the inner annular chamber 141, the inner annular chamber 141 can provide more fuel for high-fire combustion, while the outer annular chamber 142 requires less fuel for low-fire combustion, resulting in better combustion performance for the burner 100.

[0096] Additionally, it should be noted that the inner ring chamber 141, outer ring chamber 142, and extended chamber 143 mentioned above are all cavities excluding the wall thickness of the furnace head 1. The inner ring chamber 141, outer ring chamber 142, and extended chamber 143 mentioned below are also based on this, and will not be elaborated further below.

[0097] One end of the extension chamber 143 is connected to the inner ring chamber 141, and the other end extends radially through the outer ring chamber 142 to the outside of the outer ring chamber 142. The ejector 5 includes a small flame ejector tube 51 and a large flame ejector tube 52. Both the small flame ejector tube 51 and the large flame ejector tube 52 are connected to the outer periphery of the burner head 1. The small flame ejector tube 51 is connected to the outer ring chamber 142. The large flame ejector tube 52 is connected to the extension chamber 143. One end of the extension chamber 143 is connected to the inner ring chamber 141, and the other end extends to the outside of the outer ring chamber 142. One end of the extension chamber 143 extending to the outside of the outer ring chamber 142 is connected to the large flame ejector tube 52, thereby connecting the large flame ejector tube 52 to the inner ring chamber 141. The small flame ejector tube 51 is directly connected to the outer wall of the burner head 1, thereby connecting the small flame ejector tube 51 to the outer ring chamber 142. The small flame ejector tube 51 and the large flame ejector tube 52 are connected to the gas passage, thereby delivering fuel to the inner ring chamber 141 and the outer ring chamber 142.

[0098] According to an embodiment of the burner 100 of the present invention, the axis of the large flame ejector tube 52 is parallel to the axis of the small flame ejector tube 51. Specifically, the axis a of the large flame ejector tube 52 is parallel to the axis b of the small flame ejector tube 51, and the axis b of the small flame ejector tube 51 is the axis of the inner side wall of the small flame ejector tube 51. Furthermore, the axis b of the small flame ejector tube 51 intersects the axis of the outer annular chamber 142, for example... Figure 2 As shown, on the projection perpendicular to the horizontal plane, the center of the burner head 1 is on the axis b of the small flame injector tube 51. By setting the small flame injector tube 51 and the large flame injector tube 52 in a parallel structure, the burner 100 has a compact structure. Moreover, the small flame injector tube 51 and the large flame injector tube 52 are parallel. The small flame injector tube 51 is directly connected to the outer ring chamber 142. The small flame injector tube 51 delivers gas to the outer ring chamber 142 to provide fuel for the combustion of the small flame. The large flame injector tube 52 can be connected to the inner ring chamber 141 in the tangential direction of the burner head 1 through the extension chamber 143. In this way, when replacing the existing burner 100 with inner ring small flame and outer ring large flame, it is not necessary to change the existing valve position, thereby reducing the replacement cost.

[0099] It is understandable that existing gas stove burners 100 typically have the high flame on the outside and the low flame on the inside. Changing the combustion mode of the burner 100 to have the high flame on the inside and the low flame on the outside requires altering the position of the injector tube. This necessitates changes to the high and low flame valves, as well as the gas pipeline, significantly impacting the process of changing the gas stove's combustion mode. However, this application improves the structure of the burner head 1, allowing the high flame injector tube 52 and the low flame injector tube 51 to remain in their original positions. The high flame injector tube 52 can still connect to the inner ring chamber 141, and the low flame injector tube 51 can still connect to the outer ring chamber 142. This means that when changing the combustion mode of an existing gas stove, only the burner head 1 needs to be replaced. This undoubtedly reduces production costs and also lowers the cost of modifying existing gas stoves.

[0100] Therefore, according to the embodiment of the present invention, the burner 100 improves the structure of the burner head 1 so that the positions of the large flame injector tube 52 and the small flame injector tube 51 remain unchanged, and the large flame injector tube 52 can still communicate with the inner ring chamber 141, and the small flame injector tube 51 can still communicate with the outer ring chamber 142. This means that when changing the combustion mode of an existing gas stove, only the burner head 1 needs to be replaced, which undoubtedly reduces production costs and also reduces modification costs when modifying an existing gas stove.

[0101] like Figure 1 and Figure 3As shown, further, on the projection perpendicular to the horizontal plane, the axis a of the large flame ejector tube 52 is tangent to the outer periphery of the outer ring chamber 142. The axis a of the large flame ejector tube 52 is the axis of the outer wall of the large flame ejector tube 52. It can be understood that the small flame ejector tube 51 is parallel to the large flame ejector tube 52, and the axis a of the large flame ejector tube 52 is tangent to the outer periphery of the outer ring chamber 142, so that the extension chamber 143 is perpendicular to the axis of the large flame ejector tube 52 or the small flame ejector tube 51 along the radial direction of the inner ring chamber 141. Thus, the extension chamber 143 can better avoid the area where the small flame ejector tube 51 intersects with the outer ring chamber 142, thereby reducing the interference of the extension chamber 143 on the small flame ejector tube 51 and the outer ring chamber 142.

[0102] At the same time, such as Figure 3 As shown, the extension chamber 143 extends radially toward the outer side of the outer ring chamber 142. When it extends to the outer periphery of the outer ring chamber 142, it can extend in the tangential direction of the outer periphery of the outer ring chamber 142. At this time, the outer ring chamber 142 and the extension chamber 143 can share the same furnace wall of the furnace head 1, so that the furnace head 1 has a better appearance and can also reduce the difficulty of production to a certain extent.

[0103] like Figure 6 and Figure 4 As shown, further, in the circumferential direction, the bottom surface of the outer ring chamber 142 sequentially includes a first horizontal section, a vertical section, a second horizontal section, and a first inclined section, with the extension chamber 143 located below the second horizontal section. The first horizontal section is provided in the outer ring chamber 142 as an opening communicating with the small flame injector 51. The small flame injector 51 leads the fuel to the first horizontal section, through which it enters the outer ring chamber 142. The vertical section of the outer chamber leads the gas entering the outer chamber to the entire interior of the outer ring chamber 142. The gas diffuses upward under the guidance of the vertical section. There is space left in the outer ring chamber 142 for the extension chamber 143 to extend out. The second horizontal section guides the gas to avoid the extension chamber 143. The first inclined section is designed to create a spiral upward channel for gas delivery. The structure of the outer ring chamber 142 is designed in this way to facilitate the utilization of the internal space and better guide the flow of gas in the channel.

[0104] Furthermore, the extension chamber 143 has a first surface that mates with the large flame ejector tube 52, and the outer ring chamber 142 has a second surface that mates with the small flame ejector tube 51. The first surface and the second surface are coplanar. That is, when the extension chamber 143 extends tangentially to the outer periphery of the outer ring chamber 142, the tangential direction is parallel to the axis of the large flame ejector tube 52 or the small flame ejector tube 51. This allows the openings of the extension chamber 143 that mate with the large flame ejector tube 52 and the outer ring chamber 142 that mate with the small flame ejector tube 51 to face the same side. This also makes the first surface with the opening that mates with the large flame ejector tube 52 and the second surface with the opening that mates with the small flame ejector tube 51 in the same plane. This allows for better design of the structure of the burner head 1 and facilitates the assembly of the large flame ejector tube 52 and the small flame ejector tube 51.

[0105] like Figure 1 and Figure 3 As shown, the ejector 5 further includes an intermediate connecting plate 53, with the large flame ejector tube 52 and the small flame ejector tube 51 respectively connected to both sides of the intermediate connecting plate 53; one end of the intermediate connecting plate 53 is connected to the burner head 1, and the other end extends away from the burner head 1; the large flame ejector tube 52 and the small flame ejector tube 51 are symmetrically connected to the intermediate connecting plate 53; the large flame ejector tube 52 and the small flame ejector tube 51 are arranged parallel to the intermediate connecting plate 53; the intermediate connecting plate 53 divides the cavities of the large flame ejector tube 52 and the small flame ejector tube 51 into non-communicating cavities.

[0106] like Figure 1 and Figure 3 As shown, further, the large flame ejector tube 52, the small flame ejector tube 51, and the intermediate connecting plate 53 are integrally formed; the integrally formed structure integrates the large flame ejector tube 52, the small flame ejector tube 51, and the ejector element 5 into an integral structure. The large flame ejector element 5 and the small flame ejector element 5 are arranged parallel to each other within the integrally formed shell of the ejector element 5. The intermediate connecting plate 53 is located within the ejector element 5, dividing the ejector element 5 into two cavities. One cavity is for the large flame ejector element 5, and the other cavity is for the small flame ejector element 5. The large flame ejector element 5 extends into the furnace head 1 and communicates with the inner ring chamber 141, while the small flame ejector element 5 extends into the furnace head 1 and communicates with the outer ring chamber 142. The intermediate connecting plate 53 separates the large flame ejector tube 52 and the small flame ejector tube 51 into two non-communicating cavities. The integrated structure has fewer parts, higher reliability, simple structure, small size, low production cost, and is easy to mass-produce.

[0107] Furthermore, the integrally formed ejector 5 is bolted to the furnace head 1, and the bolt hole 54 is located on the side where the large flame ejector tube 52 and the small flame ejector tube 51 are far apart from each other. The structure is simple, the operation is convenient, and the ejector 5 and the furnace head 1 can be assembled well.

[0108] like Figure 4 and Figure 6 As shown, spiral upward gas flow channels are constructed in both the outer annular chamber 142 and the inner annular chamber 141. Spiral channels are constructed in the outer annular chamber 142 and the inner annular chamber 141 by setting inclined plates. The gas continuously rises in the spiral channels and is delivered to the burner cap 2 for combustion. The spiral upward gas channels make the gas delivered to the burner cap 2 more evenly. As a result, when the gas burns at the burner cap 2, the heat emitted by each burner hole is approximately the same, and the heated food receives a more uniform temperature increase. The spiral upward gas channel structure delivers the gas, which mixes with air and enters the burner head 1 for combustion, ensuring that the gas can be completely burned, controlling the flame length within a reasonable range, ensuring the safe and stable operation of the burner 100, and preventing backfire at low loads.

[0109] Furthermore, the burner head 1 is integrally formed; the inner ring chamber 141 and outer ring chamber 142 on the burner head 1 are integrally formed, resulting in a simple structure and easy cleaning. In addition, compared to traditional single-ring burners 100 or double-ring burners 100, different needs can be met by selecting whether to open or close the ignition port, and whether to open the outer ring ignition port or the inner ring ignition port 222. That is, the same mold can use different drilling methods to achieve different product requirements. When rapid heating is required, the inner ring chamber 141 and outer ring chamber 142 can be opened simultaneously. Chamber 141 and outer ring chamber 142 provide fuel for combustion of high and low flames. The high and low flames work together to heat food quickly and meet the user's needs. When slow heating with low flames is required, the inner ring chamber 141 is closed and only the inner ring chamber 141 is opened. That is, only the gas passage is opened for combustion of low flames, and the fuel delivery passage for high flames is closed. At this time, the low flames burn and deheat around the outer periphery of the burner head 1. The one-piece molded structure of the burner head 1 not only makes the overall structure of the burner 100 compact, but also meets different heating requirements and has good structural versatility.

[0110] like Figure 1 and Figure 4 As shown, a first central hole 15 is further formed on the burner head 1, and an inner ring chamber 141 surrounds the outside of the first central hole 15. The anti-dry burning component is installed inside the first central hole 15. The burner head 1 adopts a concentric circle structure to distribute the inner ring chamber 141 and the outer ring chamber 142. The first central hole 15 is set at the center of the burner head 1, that is, a through hole 165 is set at the center of the burner head 1. During the operation of the burner 100, the inner ring of the inner ring chamber 141 is provided with a hollow structure to provide more air for the burner 100 to work, so that the combustion is more complete.

[0111] In some embodiments of the present invention, the concentric circular arrangement of the inner ring chamber 141 and the outer ring chamber 142 can effectively integrate the large flame burner cap 2 and the small flame burner cap 2 into a single structure. The large flame gas passage is located in the inner ring chamber 141. The inner ring chamber 141 has a small diameter. If it is to bear a large load, it will lead to excessive heat intensity of the flame holes, resulting in performance problems such as excessive flue gas and flame lift-off. By setting the large flame gas passage in the inner ring chamber 141, the large flame is not concentrated on the small diameter central burner cap 2, but is arranged in the same outer circumferential chamber structure as the small flame air intake passage, so that the large flame has sufficient area to be arranged, the heat intensity of the flame holes is not too large, and the problems of excessive flue gas and flame lift-off are avoided. Meanwhile, by placing the low-heat gas passage externally, the flame heat dissipation is greater and the energy efficiency is lower when the burner 100 is at its minimum flame setting. This allows the heated object to maintain a lower temperature without overheating and provides a larger combustion area for low-heat combustion. The opening and closing of the high and low flames can be controlled by separately controlling the opening and closing of the inner ring chamber 141 and the outer ring chamber 142. This means that the high and low flames can be controlled to burn simultaneously, or the high or low flames can be selected to burn separately. This can meet people's multi-level cooking needs from low to medium to high heat, and the safety performance is greatly improved.

[0112] According to an embodiment of the present invention, the burner 100 provides combustion gas for combustion through the cooperation of the burner head 1 and the ejector 5. The combustion gas is ejected from the nozzle at a certain pressure and a certain flow rate, enters the intake contraction tube, and draws in primary air by its own energy. The combustion gas and primary air are mixed in the ejector 5, and then transported to the burner cap 2 through the inner ring chamber 141 and the outer ring chamber 142 for combustion to form a flame. The burner head 1 includes an inner ring chamber 141 for supplying combustion gas for the large flame and an outer ring chamber 142 for supplying combustion gas for the small flame. The ejector 5 includes a large flame ejector connected to the inner ring chamber 141. The inner ring chamber 141 is larger than the outer ring chamber 142, which provides more fuel for the large flame combustion. Both the inner and outer ring chambers 141 and 142 are designed with a spiral upward structure to provide uniformly rising gas for both the large and small flames. A first central hole 15 is provided at the center of the burner head 1 to provide more oxygen to the burner 100 during operation, ensuring complete combustion. The burner cap 2 for the small flame combustion is located in the outer ring chamber 142, allowing for an external small flame and an internal large flame without altering the burner head 1. The first central hole 15 is located at the center of the burner head 1, and the inner and outer ring chambers 141 and 142 are distributed around the outer ring of the first central hole 15, ensuring a smooth transition between the inner and outer ring chambers 141 and 142. The large and small flame caps 2, connected to the outer ring chamber 142, have larger diameters, resulting in a larger area for arranging the flame holes. Although the large flame cap 2 is located on the inner side, there is still sufficient area for arranging the flame holes under high fire load. This not only meets the needs of high fire load but also prevents excessive heat intensity of the flame holes from causing excessive flue gas emissions and flame lift-off. The small flame cap 2 is located on the outermost side of the burner head 1. When using a low fire, it provides a larger heating area for the bottom of the pot, and the heat exchange between the flame and the outside air is more thorough, resulting in higher combustion efficiency and better low-temperature temperature control. This allows for better maintenance of the heated object at a relatively low and constant temperature. The inner ring chamber 141 and the outer ring chamber 142 are designed as a single unit, which is simple in structure and easy to clean. In addition, compared to the traditional single-ring burner 100 or double-ring burner 100, different needs can be met by selecting whether to open or close the flame holes, and whether to open the outer ring flame holes or the inner ring flame holes 222, resulting in good structural versatility.

[0113] The burner 100 according to an embodiment of the present invention, such as Figure 1 , Figure 2 and Figure 9 As shown, the burner 100 also includes an anti-dry-burning device, which is connected to the burner head 1. The probe 41 of the anti-dry-burning device extends upward through the burner head 1 and into the first central hole 15 of the burner cap 2. Specifically, a positioning bracket 16 for installing the anti-dry-burning probe 4 can be provided on the burner head 1. By providing the positioning bracket 16 on the burner 100, the installation of the anti-dry-burning probe 4 is more secure and the installation position is more accurate.

[0114] According to some embodiments of the present invention, such as Figures 1-5 As shown, the cover plate 3 has a clearance hole 34 at its center for the anti-dry-burning probe 4 to extend. Specifically, the cover plate 3 has a clearance hole 34 at its center, through which the anti-dry-burning probe 4 can extend. By providing a clearance hole 34 on the cover plate 3, the burner 100 can be equipped with an anti-dry-burning probe 4 to detect the temperature of the pot bottom, thereby preventing safety accidents such as the pot burning dry due to the user forgetting to turn off the stove, improving the safety of the burner 100 and the user experience. The clearance hole 34 is larger than the anti-dry-burning probe 4, facilitating its extension.

[0115] According to some embodiments of the present invention, such as Figure 1 and Figure 5 As shown, a cylindrical body 35 is provided on the cover plate 3. The cylindrical body 35 is connected to the periphery of the avoidance hole 34 and extends upward. By providing the cylindrical body 35 on the cover plate 3, the anti-dry burning probe 4 can be protected, and the burner 100 can also be made more aesthetically pleasing.

[0116] According to some embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 9 and Figure 11 As shown, a positioning bracket 16 is provided on the burner cap 2 or the burner head 1, and an anti-dry-burning probe 4 is installed on the positioning bracket 16. The anti-dry-burning probe 4 extends upward through the clearance hole 34. Specifically, the positioning bracket 16 for installing the anti-dry-burning probe 4 can be provided on the burner cap 2, or it can be provided on the burner head 1. By providing the positioning bracket 16 on the burner 100, the installation of the anti-dry-burning probe 4 is more secure and the installation position is more accurate.

[0117] For example, in Figure 1 , Figure 2 , Figure 7 and Figure 9In the illustrated embodiment, the burner head 1 is provided with a positioning hole 17 for mounting a positioning bracket 16. The positioning bracket 16 includes a first mounting member 161 and a second mounting member 162. The anti-dry-burning probe 4 includes a connecting rod 42 and a probe 41. The side walls of the first mounting member 161 and the second mounting member 162 are provided with mounting grooves 166 that cooperate with the connecting rod 42 of the anti-dry-burning probe 4. The side wall of the first mounting member 161 is provided with a mounting hole 163, and the side wall of the second mounting member 162 is provided with a mounting hole 163 that cooperates with the mounting hole 163 of the first mounting member 161. The first mounting member 161 and the second mounting member 162 are connected together by fasteners. In order to cooperate with the positioning hole 17 on the burner head 1, the first mounting member 161 is provided with a positioning plate 164 that connects to the positioning hole 17. The positioning plate 164 is provided with a through hole 165 that cooperates with the positioning hole 17. The positioning plate 164 and the burner head 1 can be connected by fasteners. The positioning plate 164 and the burner head 1 can also be connected together by adhesive or snap-fit.

[0118] The steps for installing the anti-dry-burning probe 4 on the burner 100 are as follows: place the connecting rod 42 of the anti-dry-burning probe 4 into the mounting groove 166 of the first mounting plate or the second mounting plate, then connect the mounting holes 163 on the first mounting member 161 and the second mounting member 162 together with fasteners, so that the anti-dry-burning probe 4 can be fixed in the mounting groove 166, then extend the anti-dry-burning probe 4 out from the clearance hole 34 of the cover plate 3, and finally fix the through hole 165 of the positioning plate 164 on the first mounting plate to the positioning hole 17 on the burner head 1 with fasteners, so that the anti-dry-burning probe 4 can be installed on the burner 100.

[0119] It should be noted that a positioning bracket 16 can also be provided on the burner cap 2 for installing the anti-dry burning probe 4.

[0120] The following description, with reference to the accompanying drawings, describes four specific embodiments of the fire cover 2 according to the present invention.

[0121] Example 1

[0122] refer to Figure 10 and Figure 11The burner cap 2 is a single piece, covering the burner head 1. The inner circumferential surface 22 of the burner cap 2 is a conical surface with its radial dimension gradually increasing from bottom to top. The outer circumferential wall 21 of the burner cap 2 includes a first wall surface 211 and a second wall surface 212. The first wall surface 211 is a conical surface with its radial dimension gradually increasing from top to bottom, and the second wall surface 212 is a cylindrical surface. A large flame hole 213 is located on the first wall surface 211 and communicates with the inner annular chamber 141 of the burner head 1. A small flame hole 214 is located between the second wall surface 212 and the first wall surface 211 and communicates with the outer annular chamber 142 of the burner head 1. A flame stabilizing hole 215, smaller than the large flame hole 213, is located on the first wall surface 211 and communicates with the inner annular chamber 141 of the burner head 1, and is located at the large flame hole 213. Between the small flame hole 214 and the small flame hole 214, the small outlet 2142 of the small flame hole 214 is constructed as a fine groove extending circumferentially along the outer peripheral wall 21 of the flame cap 2. The bottom of the flame cap 2 is provided with a first annular rib 23 and a second annular rib 24. The outer peripheral wall of the first annular rib 23 is recessed relative to the outer peripheral wall 21 of the flame cap 2. The second annular rib 24 forms the second central hole 221 of the flame cap 2. The first central hole 15 and the second central hole 221 are connected. The small flame hole 214 extends along the zigzag direction and forms a small inlet 2141 on the bottom surface of the first annular rib 23. The large inlet 2131 of the large flame hole 213 is connected to the first annular rib 23. In the space between the second annular rib 24, the lower end of the fire cover 2 is also provided with a relief groove 25 for accommodating the first annular plate 11, the second annular plate 12 and the third annular plate 13 of the burner head 1. The first annular rib 23 is located in the outer annular cavity 142 to form an embedded part, wherein the outer peripheral wall of the first annular rib 23 is in contact with the inner peripheral wall of the third annular plate 13, the inner peripheral wall of the first annular rib 23 is in contact with the outer peripheral wall of the second annular plate 12, and the outer peripheral wall of the second annular rib 12 is in contact with the inner peripheral wall of the first annular plate 11.

[0123] Example 2

[0124] refer to Figure 12 and Figure 13The burner cap 2 is a single piece, covering the burner head 1. The inner circumferential surface 22 of the burner cap 2 is a conical surface with its radial dimension gradually increasing from bottom to top. The outer circumferential wall 21 of the burner cap 2 includes a first wall surface 211 and a second wall surface 212. The first wall surface 211 is a conical surface with its radial dimension gradually increasing from top to bottom, and the second wall surface 212 is a cylindrical surface. A large flame hole 213 is located on the first wall surface 211 and communicates with the inner annular chamber 141 of the burner head 1. A small flame hole 214 is located between the second wall surface 212 and the first wall surface 211 and communicates with the outer annular chamber 142 of the burner head 1. A flame stabilizing hole 215, with a size equal to that of the large flame hole 213, is located on the first wall surface 211 and communicates with the inner annular chamber 141 of the burner head 1, and is located at the large flame hole 213. Between the small flame hole 214 and the small flame hole 214, the small outlet 2142 of the small flame hole 214 is constructed as a fine groove extending circumferentially along the outer peripheral wall 21 of the flame cap 2. The lower end of the flame cap 2 is provided with a first annular rib 23, a second annular rib 24 and a third annular rib 29. The first annular rib 23 and the third annular rib 29 form a first groove 27. The small flame hole 214 extends along the zigzag direction, and a small inlet 2141 is formed on the bottom wall of the first groove 27, communicating with the first groove 27. The third annular rib 29 and the small flame hole 214 extend along the zigzag direction, forming a small inlet 2141 on the bottom wall of the first groove 27. The second annular rib 24 forms the second groove 28. The large inlet 2131 of the large fire hole 213 communicates with the second groove 28. The outer peripheral wall of the first annular rib 23 is recessed relative to the outer peripheral wall 21 of the fire cover 2. The second annular rib 24 forms the second central hole 221 of the fire cover 2. The first central hole 15 and the second central hole 221 communicate. The lower end of the fire cover 2 is also provided with a relief groove 25 for accommodating the first annular plate 11, the second annular plate 12 and the third annular plate 13 of the burner head 1. The outer peripheral wall of the first annular rib 23 is in contact with the inner peripheral wall of the third annular plate 13. The inner peripheral wall of the third annular rib 29 is in contact with the outer peripheral wall of the second annular plate 12. The outer peripheral wall of the second annular rib 12 is in contact with the inner peripheral wall of the first annular plate 11.

[0125] Example 3

[0126] refer to Figure 14 and Figure 15The burner cap 2 is a single piece, covering the burner head 1. The inner circumferential surface 22 of the burner cap 2 is a conical surface with a radial dimension that gradually increases from bottom to top. The outer circumferential wall 21 of the burner cap 2 includes a first wall surface 211 and a second wall surface 212. The first wall surface 211 is a conical surface with a radial dimension that gradually increases from top to bottom, and the second wall surface 212 is a cylindrical surface. A large flame hole 213 is located on the first wall surface 211 and communicates with the inner annular chamber 141 of the burner head 1. A small flame hole 214 is located on the second wall surface 212 and communicates with the outer annular chamber 142 of the burner head 1. A flame stabilizing hole 215, smaller in size than the large flame hole 213, is located on the first wall surface 211 and communicates with the inner annular chamber 141 of the burner head 1, and is located between the large flame hole 213 and the small flame hole 214. The lower end of the burner cap 2 is provided with a first annular rib 23, a second annular rib 24, and a third annular rib 29. The first annular rib 23... The third annular rib 29 forms a first groove 27. Multiple notches 271, spaced circumferentially along the outer periphery of the flame cap 2, are provided on the outer circumferential surface of the first groove 27. These notches 271 form a toothed structure at the lower edge of the outer periphery of the first groove 27. The third annular rib 29 and the second annular rib 24 form a second groove 28. The large inlet 2131 of the large flame hole 213 communicates with the second groove 28. The outer periphery of the first annular rib 23 is flush with the outer periphery of the flame cap 2. The second annular rib 24 forms a second central hole 221 in the flame cap 2. The first central hole 15 and the second central hole 221 communicate. The flame cap 2... The lower end is also provided with a relief groove 25 for accommodating the first annular plate 11, the second annular plate 12 and the third annular plate 13 of the furnace head 1. The outer peripheral wall of the first annular rib 23 is attached to the inner peripheral wall of the third annular plate 13, the inner peripheral wall of the third annular rib 29 is attached to the outer peripheral wall of the second annular plate 12, and the outer peripheral wall of the second annular rib 12 is attached to the inner peripheral wall of the first annular plate 11.

[0127] Example 4

[0128] refer to Figure 16 and Figure 17The burner cap 2 is a single piece, covering the burner head 1. The inner circumferential surface 22 of the burner cap 2 is formed as a conical surface with its radial dimension gradually increasing from bottom to top. The inner ring flame hole 222 is provided on the inner circumferential surface 22 of the burner cap 2. The outer circumferential wall 21 of the burner cap 2 includes a first wall surface 211 and a second wall surface 212. The first wall surface 211 is formed as a conical surface with its radial dimension gradually increasing from top to bottom, and the second wall surface 212 is a cylindrical surface. The large flame hole 213 is provided on the first wall surface 211. The upper part communicates with the inner annular chamber 141 of the burner head 1. The small flame hole 214 is located between the first wall surfaces 211 and communicates with the outer annular chamber 142 of the burner head 1. The flame stabilizing hole 215, with the same size as the large flame hole 213, is located on the first wall surface 211 and communicates with the inner annular chamber 141 of the burner head 1, and is located between the large flame hole 213 and the small flame hole 214. The lower end of the burner cover 2 is provided with a first annular rib 23, a second annular rib 24 and a third annular rib 29. The first annular rib 23 and the third annular rib 29 form a first groove 27. The end of the small flame hole 214 away from the outer peripheral wall 21 of the burner cover 2 extends to the bottom wall of the first groove 28 to form a small inlet 2141. The third annular rib 29 and the second annular rib 24 form a second groove 28. The large inlet 2131 of the large flame hole 213... The outer peripheral wall of the first annular rib 23 is recessed relative to the outer peripheral wall 21 of the burner cap 2, and the second annular rib 24 forms the second central hole 221 of the burner cap 2. The first central hole 15 and the second central hole 221 are connected. The lower end of the burner cap 2 is also provided with a relief groove 25 for accommodating the first annular plate 11, the second annular plate 12 and the third annular plate 13 of the burner head 1. The outer peripheral wall of the first annular rib 23 is in contact with the inner peripheral wall of the third annular plate 13, the inner peripheral wall of the third annular rib 29 is in contact with the outer peripheral wall of the second annular plate 12, and the outer peripheral wall of the second annular rib 12 is in contact with the inner peripheral wall of the first annular plate 11.

[0129] The burner 100 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0130] like Figure 1 and Figure 2 As shown, the burner 100 includes a burner head 1, a burner cover 2, a cover plate 3, an anti-dry-burning probe 4, and an ejector 5.

[0131] refer to Figure 2 , Figure 7 and Figure 8The burner head 1 is formed in a ring shape. Inside the burner head 1, there are an inner ring chamber 141 and an outer ring chamber 142 extending in the circumferential direction of the burner head 1. The outer ring chamber 142 surrounds the outer side of the inner ring chamber 141. The burner head 1 includes a first ring plate 11, a second ring plate 12 and a third ring plate 13. The first ring plate 11 forms a first central hole 15. The second ring plate 12 is fitted outside the first ring plate 11 to define the inner ring chamber 141. The third ring plate 13 is fitted outside the second ring plate 12 to define the outer ring chamber 142. The burner head 1 is also provided with a positioning bracket 16 and a positioning hole 17.

[0132] The flame cap 2 can be any one of the flame caps 2 in the above embodiments.

[0133] like Figures 2-5 As shown, the cover plate 3 includes a plate body 31 and supporting ribs 32. The plate body 31 covers the second central hole 221. There is a gap between the plate body 31 and the flame cap 2 to define an air passage 33. The air passage 33 communicates with the first central hole 15 and the second central hole 221. The center of the plate body 31 is provided with a clearance hole 34 for the extension of the anti-dry burning probe 4. The plate body 31 is also provided with a cylinder 35. The cylinder 35 is connected to the axis of the clearance hole 34 and extends upward. The outer edge of the plate body 31 forms a waterproof eaves 311 that covers the air passage 33. The lower surface of the plate body 31 is provided with four supporting ribs 32. The four supporting ribs 32 are evenly spaced along the circumferential direction of the plate body 31. The lower end of the supporting ribs 32 is in contact with the inner circumferential surface 22 of the flame cap 2.

[0134] refer to Figure 1 , Figure 2 , Figure 9 and Figure 11 The anti-dry-burning probe 4 includes a connecting rod 42 and a probe 41. The positioning bracket 16 includes a first mounting component 161 and a second mounting component 162. Both the first mounting component 161 and the second mounting component 162 have mounting grooves 166 on their side walls that mate with the connecting rod 42 of the anti-dry-burning probe 4. The first mounting component 161 has a mounting hole 163 on its side wall, and the second mounting component 162 has a mounting hole 163 on its side wall that mates with the mounting hole 163 of the first mounting component 161, thus fixing the connecting rod 42. Within the mounting slot 166, the first mounting component 161 and the second mounting component 162 are connected together by fasteners. In order to cooperate with the positioning hole 17 on the burner head 1, the first mounting component 161 is provided with a positioning plate 164 connected to the positioning hole 17. The positioning plate 164 is provided with a through hole 165 that cooperates with the positioning hole 17. The positioning plate 164 is connected to the burner head 1 by fasteners, so that the anti-dry burning probe 4 is fixed on the burner 100 and the anti-dry burning probe 4 extends out from the clearance hole 34.

[0135] refer to Figure 1 and Figure 3The ejector 5 includes: the outer peripheral wall 21 of the large flame ejector tube 52 and the flame cap 2, the outer peripheral wall 21 of the small flame ejector tube 51 and the flame cap 2, and the outer peripheral wall 21 of the intermediate connecting plate 53. The outer peripheral wall 21 of the large flame ejector tube 52 and the flame cap 2, the outer peripheral wall 21 of the small flame ejector tube 51 and the flame cap 2, and the outer peripheral wall 21 of the intermediate connecting plate 53 are integrally formed. Through this integrally formed structure, the outer peripheral walls 21 of the large flame ejector tube 52 and the flame cap 2, the outer peripheral wall 21 of the small flame ejector tube 51 and the flame cap 2, and the outer peripheral wall 21 of the flame cap 2 are all integrally formed. The outer peripheral wall 21 of the flame cap 2 is arranged parallel to the shell integrally formed by the outer peripheral wall 21 of the flame cap 2 of the ejector 5. The intermediate connecting plate 53 is located inside the outer peripheral wall 21 of the flame cap 2, dividing the outer peripheral wall 21 of the flame cap 2 into two cavities. One cavity is the outer peripheral wall 21 of the large flame ejector 5, and the other cavity is the outer peripheral wall 21 of the small flame ejector 5. The outer peripheral wall 21 of the large flame ejector 5 extends into the outer peripheral wall 21 of the flame cap 2 of the furnace head 1 and communicates with the outer peripheral wall 21 of the flame cap 2 of the inner ring chamber 141. The outer peripheral wall 21 of the small flame ejector 5 extends into the outer peripheral wall 21 of the flame cap 2 of the furnace head 1 and communicates with the outer peripheral wall 21 of the flame cap 2 of the outer ring chamber 142. The connection is made through the intermediate connecting plate 53. The outer peripheral wall 21 of the flame cap 2 separates the outer peripheral wall 21 of the large flame ejector tube 52 and the outer peripheral wall 21 of the small flame ejector tube 51 into two non-communicating cavities.

[0136] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0137] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A burner cap, characterized in that, The flame cap is formed in a ring shape. The flame cap is provided with a large flame hole for providing a large flame and a small flame hole for providing a small flame. The large flame hole and the small flame hole are both arranged along the circumference of the flame cap, and the large flame hole and the small flame hole are arranged to form a small flame on the outer ring and a large flame on the inner ring. The outlet of the small flame hole is configured as a fine groove extending circumferentially along the outer peripheral wall of the flame cap. The small flame holes include a plurality of them spaced apart along the circumference of the flame cap. The outlets of the plurality of small flame holes are spaced apart along the circumference of the flame cap on the outer peripheral wall of the flame cap, and the outlet size of the small flame holes is smaller than the outlet size of the large flame holes. The outer peripheral wall of the flame cap is provided with multiple rows of large flame holes arranged vertically, and each row includes multiple large flame holes spaced apart along the circumference of the flame cap. The size of the large flame holes in the upper row is not less than the size of the large flame holes in the lower row. The large flame holes in adjacent rows are arranged alternately or vertically opposite each other. The small flame hole extends along an oblique direction to the lower surface of the flame cap to form a small inlet. The lower surface of the flame cap has a second groove that extends along the circumferential direction of the flame cap. The large inlet of the large flame hole communicates with the second groove.

2. The burner cap of the burner according to claim 1, characterized in that, Both the large and small flame holes are located on the outer peripheral wall of the flame cap. The large flame hole is located above the small flame hole; or the small flame hole is located on the outside of the large flame hole in the radial direction of the flame cap.

3. The burner cap of the burner according to claim 2, characterized in that, The small inlet of the small flame hole is located on the lower surface of the flame cap, and the small flame hole extends along a curved direction, along a broken line direction, or along a diagonal line direction.

4. The burner cap of the burner according to claim 1, characterized in that, The lower surface of the flame cap has a first groove that extends along the circumferential direction of the flame cap. The small flame hole is configured to have multiple notches spaced apart along the circumferential direction of the flame cap on the outer circumferential surface of the first groove. The multiple notches are configured into a toothed structure at the lower edge of the outer circumferential surface of the first groove.

5. The burner cap of the burner according to claim 1, characterized in that, The inner circumferential surface of the flame cap is provided with a plurality of inner ring flame holes spaced apart along the circumferential direction of the flame cap.

6. The burner cap of the burner according to claim 1, characterized in that, The inner circumferential surface of the flame cap is formed as a conical surface with a radial dimension that gradually increases from bottom to top; and / or The outer peripheral wall of the flame cap is formed as a conical surface with radial dimensions gradually decreasing from bottom to top.

7. The burner cap of the burner according to claim 1, characterized in that, The outer peripheral wall of the flame cap includes a first wall surface and a second wall surface in the direction from top to bottom. The first wall surface is formed as a conical surface with a radial dimension that gradually increases from top to bottom. The large flame hole is provided on the first wall surface. The second wall surface is a cylindrical surface. The small flame hole is provided at the junction of the first wall surface, the second wall surface, or the first wall surface and the second wall surface.

8. The burner cap of the burner according to claim 1, characterized in that, The flame cap is a single piece.

9. The burner cap of the burner according to claim 1, characterized in that, The bottom of the flame cap is provided with a first annular rib, and the inner circumference of the flame cap is provided with a second annular rib. The second annular rib forms a second central hole in the flame cap. The outer peripheral wall of the first annular rib is flush with or recessed relative to the outer peripheral wall of the flame cap. Wherein, the inlet of the small flame hole is located on the bottom surface of the first annular rib, and the inlet of the large flame hole connects to the space between the first annular rib and the second annular rib; or A third annular rib is provided between the first annular rib and the second annular rib. The inlet of the small flame hole is connected to the space between the first annular rib and the third annular rib, and the inlet of the large flame hole is connected to the space between the second annular rib and the third annular rib.

10. A burner, characterized in that, include: The burner head is annular, and an inner annular chamber and an outer annular chamber are formed inside the burner head extending in the circumferential direction of the burner head, with the outer annular chamber surrounding the outer side of the inner annular chamber; A flame cover is provided on the furnace head, and the flame cover is the same as any one of claims 1-9. The large flame hole communicates with the inner annular chamber, and the small flame hole communicates with the outer annular chamber. The furnace head includes a first annular plate, a second annular plate, and a third annular plate. The second annular plate is sleeved outside the first annular plate to define the inner annular chamber, and the third annular plate is sleeved on the second annular plate to define the outer annular chamber. The flame cap has a first annular rib at its bottom and a second annular rib along its inner circumference. The second annular rib forms a second central hole in the flame cap. The outer peripheral wall of the first annular rib is flush with or recessed relative to the outer peripheral wall of the flame cap. Wherein, the outer peripheral wall of the first annular rib is fitted with the inner peripheral wall of the third annular plate, the inner peripheral wall of the first annular rib is fitted with the outer peripheral wall of the second annular plate, and the outer peripheral wall of the second annular rib is fitted with the inner peripheral wall of the first annular plate. The small inlet of the small flame hole is located on the bottom surface of the first annular rib, and the large inlet of the large flame hole connects to the space between the first annular rib and the second annular rib; or A third annular rib is provided between the first annular rib and the second annular rib. The outer peripheral wall of the first annular rib is in contact with the inner peripheral wall of the third annular plate, the inner peripheral wall of the third annular rib is in contact with the outer peripheral wall of the second annular plate, and the outer peripheral wall of the second annular rib is in contact with the inner peripheral wall of the first annular plate. The small inlet of the small flame hole connects to the space between the first annular rib and the third annular rib, and the large inlet of the large flame hole connects to the space between the second annular rib and the third annular rib.

11. The burner according to claim 10, characterized in that, The second central hole of the burner head communicates with the first central hole of the burner cap, and the burner further includes: A cover plate covers the flame cap and is vertically opposite the second central hole. There is a gap between the cover plate and the flame cap to define an air passage. The air passage communicates with the first central hole and guides air outward radially along the flame cap.

12. The burner according to claim 11, characterized in that, The cover plate includes: A plate body that covers the top of the second central hole, and the plate body cooperates with the flame cap to define the air passage; Multiple support ribs are connected to the lower surface of the cover plate and are spaced apart along the circumferential direction of the plate. The support ribs are supported on the fire cover.

13. The burner according to claim 10, characterized in that, The burner head also has an extension chamber, which communicates with the inner annular chamber and extends through the outer annular chamber to the outside of the outer annular chamber. The burner also includes: An ejector, comprising a small flame ejector tube and a large flame ejector tube, both connected to the outer periphery of the furnace head, the small flame ejector tube communicating with the outer annular chamber, and the large flame ejector tube communicating with the extension chamber.

14. The burner according to claim 13, characterized in that, The axis of the large fire ejector tube is parallel to the axis of the small fire ejector tube.

15. The burner according to claim 10, characterized in that, Also includes: An anti-dry-burning device is provided, which is connected to the burner head. The probe of the anti-dry-burning device extends upward through the burner head and into the first central hole of the burner cap.

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