Outer fire cover, burner and gas stove

Abstract

The utility model discloses an outer fire cover, combustor and gas -cooker. The outer fire cover includes outer fire cover body and sets up a plurality of outer fire holes on the outer fire cover body, and a plurality of outer fire holes are along the circumferential setting of fire cover body, and the outer fire hole includes first outer fire hole and second outer fire hole, is provided with first area and second area on the outer fire cover body, and first outer fire hole is arranged in first area, and second outer fire hole is arranged in second area, and the diameter of first outer fire hole is less than the diameter of second outer fire hole. The utility model provides an outer fire cover, and the structure is simple and compact, and the flame combustion of outer ring fire is more uniform.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to an outer burner cap, a burner, and a gas stove. Background Technology

[0002] In some existing burners, the outer and inner ring gas supply channels are independently configured. That is, the outer ring gas supply pipe connects to the outer ring combustion chamber, supplying gas to the outer burner holes, while the inner ring gas supply pipe connects to the inner ring combustion chamber, supplying gas to the inner burner holes. In this structure, a guide vane is typically required between the outer ring gas supply pipe and the outer ring combustion chamber to ensure that the gas flowing from the outer ring gas supply pipe into the outer ring combustion chamber is evenly distributed to each outer burner hole, thereby improving the combustion uniformity of the outer ring flame. This design is relatively complex, inconvenient to install, and costly.

[0003] Therefore, there is an urgent need for an external flame cap to solve the above problems. Utility Model Content

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes an outer flame cap with a simple and compact structure, which allows for more uniform flame combustion in the outer ring.

[0005] The above objectives are achieved through the following technical solutions:

[0006] An outer flame cap includes an outer flame cap body and a plurality of outer flame holes formed on the outer flame cap body. The plurality of outer flame holes are arranged circumferentially along the flame cap body. The outer flame holes include a first outer flame hole and a second outer flame hole. The outer flame cap body is provided with a first region and a second region. The first outer flame hole is disposed in the first region, and the second outer flame hole is disposed in the second region. The diameter of the first outer flame hole is smaller than the diameter of the second outer flame hole.

[0007] Optionally, the first region includes a first partial region and a second partial region, wherein the center of the first region is the origin, and a circle with the origin as its center has a diameter of... The area within the range is the first local region, with the origin as the center and a diameter of... up to the diameter The area within the range is the second local area, and the diameter of the first outer flame hole located within the first local area is smaller than the diameter of the first outer flame hole located within the second local area.

[0008] Optionally,

[0009] Optionally, within the second local region, the diameters of the plurality of first external fire holes increase sequentially in a direction away from the origin.

[0010] Optionally, with the origin as the center, the second local area is provided with at least two separate areas from the inside to the outside. Each of the separate areas is provided with the first external flame hole. Among the first external flame holes in two adjacent separate areas, the diameter of the first external flame hole in the separate area closer to the origin is d1, and the diameter of the first external flame hole in the separate area farther from the origin is d2, where d1 < d2.

[0011] Optionally, at least two of the first external fire holes are provided in the separate area.

[0012] Optionally, the outer flame cover body is further provided with an annular flame hole located inside the outer flame hole.

[0013] Optionally, the upper side of the outer flame cap body includes an outer side and an inner side located inside the outer side. The outer side is inclined downward from the inside to the outside, and the inner side is inclined downward from the outside to the inside. The outer flame hole is opened on the outer side, and the circumferential flame hole is opened on the inner side.

[0014] In another aspect, this utility model provides a burner, including a flame distributor, an outer ring gas supply pipe, and the aforementioned outer flame cap. The outer flame cap covers the upper side of the flame distributor. The flame distributor includes a flame distributor body, on which an outer ring gas groove with an upward opening and communicating with the outer flame hole is formed. The outer ring gas supply pipe is installed vertically at the lower part of the flame distributor and communicates with the outer ring gas groove. The outer ring gas supply pipe is located in the vertical projection of the first region, and the central axis of the outer ring gas supply pipe is collinear with the origin located at the center of the first region.

[0015] Optionally, the inner diameter of the outer ring gas pipe is 30mm-35mm.

[0016] Optionally, it also includes an inner flame cap and an inner ring gas supply pipe. The inner flame cap is disposed inside the outer flame cap. The inner flame cap includes an inner flame cap body and a plurality of inner flame holes. The plurality of inner flame holes are arranged circumferentially along the inner flame cap body. The flame distributor also has an inner ring gas groove with an upward opening that communicates with the inner flame holes. The inner ring gas groove is located inside the outer ring gas groove. The inner ring gas supply pipe is installed vertically at the lower part of the flame distributor and communicates with the inner ring gas groove.

[0017] Optionally, a secondary air channel is formed between the outer flame cap and the inner flame cap at an interval. The distance between the outer side of the outer flame hole and the outer side of the inner flame hole is a, 32mm≤a≤40mm. The distance between the outer side of the annular slit flame hole located inside the outer flame hole on the outer flame cap body and the outer side of the inner flame hole is b, 25mm≤b≤32mm.

[0018] In another aspect, this utility model provides a gas stove, including the burner described above.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] The outer flame cover provided by this utility model includes an outer flame cover body and a plurality of outer flame holes opened on the outer flame cover body. The plurality of outer flame holes are arranged along the circumference of the flame cover body. The outer flame holes include a first outer flame hole and a second outer flame hole. A first region and a second region are provided on the outer flame cover body. The first outer flame hole is located in the first region, and the second outer flame hole is located in the second region. The diameter of the first outer flame hole is smaller than the diameter of the second outer flame hole. In specific installation, the outer flame cap is installed on the burner's distributor. The distributor has an outer ring gas groove that communicates with the outer flame holes. An outer ring gas pipe is installed at the lower end of the distributor, which is arranged vertically. The outer ring gas pipe communicates with the outer ring gas groove and is located at the center of the first region. The gas entering the outer ring gas groove through the outer ring gas pipe has a large gas pressure. Since the diameter of the first outer flame hole in the first region is smaller than that in the second region, more gas can flow along the outer ring gas groove to the first outer flame hole in the second region, thereby achieving pressure division and flow guidance of the gas. This makes the flame at each outer flame hole more uniform. Compared with the existing technology that uses guide vanes to achieve gas flow guidance and pressure division, the structure is simpler and more compact. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the burner provided in a specific embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 Exploded view;

[0023] Figure 3 yes Figure 1 Top view;

[0024] Figure 4 yes Figure 3 Sectional view at point AA;

[0025] Figure 5 This is a front view of the burner after the distributor has been removed, according to a specific embodiment of this utility model;

[0026] Figure 6 yes Figure 5 Sectional view at point BB.

[0027] In the picture:

[0028] 1. Outer flame cap; 11. Outer flame cap body; 111. Inner side; 112. Outer side; 12. Outer flame hole; 121. First outer flame hole; 122. Second outer flame hole; 13. Circumferential groove; 131. Circumferential flame hole;

[0029] 2. Inner flame cap; 21. Inner flame cap body; 22. Inner flame hole;

[0030] 3. Flame distributor; 31. Flame distributor body; 32. Outer annular gas groove; 33. Inner annular gas groove;

[0031] 41. Outer ring ejector tube; 42. Inner ring ejector tube;

[0032] 51. Outer ring gas pipeline; 52. Inner ring gas pipeline;

[0033] 100. Secondary air passage; 200. Origin; 300. Central axis; 400. First local area; 500. Second local area; 501. Separate area. Detailed Implementation

[0034] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0035] Please refer to Figures 1-6 This utility model provides an outer flame cap, including an outer flame cap body 11 and a plurality of outer flame holes 12 formed on the outer flame cap body 11. The plurality of outer flame holes 12 are arranged along the circumference of the flame cap body. The outer flame holes 12 include a first outer flame hole 121 and a second outer flame hole 122. The outer flame cap body 11 is provided with a first region and a second region. The first outer flame hole 121 is located in the first region, and the second outer flame hole 122 is located in the second region. The diameter of the first outer flame hole 121 is smaller than the diameter of the second outer flame hole 122. In specific installation, the outer flame cap 1 is installed on the burner distributor 3. The burner distributor 3 has an outer ring gas groove 32 that communicates with the outer flame hole 12. The lower end of the burner distributor 3 is equipped with an outer ring gas pipe 51 arranged vertically. The outer ring gas pipe communicates with the outer ring gas groove 32, and the outer ring gas pipe 51 is located at the center of the first region. The gas entering the outer ring gas groove 32 through the outer ring gas pipe 51 has a large gas pressure. At this time, since the diameter of the first outer flame hole 121 in the first region is smaller than the diameter of the first outer flame hole 121 in the second region in this embodiment, more gas can flow along the outer ring gas groove 32 to the first outer flame hole 121 in the second region, thereby realizing the pressure division and flow guidance of the gas, making the flame at each outer flame hole 12 more uniform. Compared with the method of using guide plates to achieve gas flow and pressure division in the prior art, the structure is simpler and more compact.

[0036] In this embodiment, the diameter of the first outer flame hole 121 is 2.3 mm, and the diameter of the second outer flame hole 122 is 2.7 mm.

[0037] Of course, the diameters of the multiple first external firing holes 121 can also be different. Optionally, the first region includes a first partial region 400 and a second partial region 500. The center of the first region is the origin 200, and the diameter of the circle centered on the origin 200 is... The area within the range is the first local region 400, with the origin 200 as the center and a diameter of... up to the diameter The area within the range is the second local region 500. The diameter of the first external flame hole 121 located in the first local region 400 is smaller than the diameter of the first external flame hole 121 in the second local region 500.

[0038] Preferably, It is the inner diameter of the outer ring gas pipeline 51.

[0039] Since the inner diameter of the outer ring gas pipe 51 in this embodiment is 32mm, that is... The diameter is 32mm. To ensure the uniformity of the outer ring flame distribution, it can be optionally...

[0040] Exemplarily, in this embodiment, It is 70mm.

[0041] In one embodiment of this example, optionally, within the second local region 500, the diameters of the plurality of first external fire holes 121 increase sequentially in a direction away from the origin 200.

[0042] In another embodiment of this example, optionally, with the origin 200 as the center, the second local area 500 is provided with at least two separate areas 501 from the inside to the outside. Each separate area 501 is provided with a first external flame hole 121. Among the first external flame holes 121 of two adjacent separate areas 501, the diameter of the first external flame hole 121 located in the separate area 501 closer to the origin 200 is d1, and the diameter of the first external flame hole 121 located in the separate area 501 farther from the origin 200 is d2, where d1 < d2.

[0043] Specifically, in this embodiment, three separate regions 501 are provided, with the origin 200 as the center and a diameter of [missing information]. up to the diameter The area within the range is the first subdivided area 501, centered at the origin 200, with a diameter of... up to the diameter The area within the specified range is the second sub-region 501, centered at the origin 200, with a diameter of... up to the diameter The area within the specified range is the second sub-region 501.

[0044] Optionally, at least two first external fire holes 121 are provided in the separate area 501.

[0045] Optionally, the outer flame cap body 11 is also provided with an annular flame hole 131 located inside the outer flame hole 12. By providing the annular flame hole 131, an annular flame exists between the outer and inner annular flames, thereby increasing the uniformity of the burner flame and improving thermal uniformity.

[0046] Optionally, the upper side of the outer flame cap body 11 includes an outer side 112 and an inner side 111 located inside the outer side 112. The outer side 112 is inclined downward from the inside to the outside, and the inner side 111 is inclined downward from the outside to the inside. The outer flame hole 12 is opened on the outer side 112, and the annular flame hole 131 is opened on the inner side 111. This facilitates the opening operation of the outer flame hole 12 and the annular flame hole 131, allowing the opening tool to be perpendicular to the outer side 112 or the inner side 111 to open the outer flame hole 12 and the annular flame hole 131. On the other hand, it also facilitates the upward flow of secondary air along the inclined inner side 111 to the annular flame hole 131, thereby improving the combustion efficiency of the annular flame hole 131. Furthermore, it also ensures that the annular flame at the annular flame hole 131 and the outer annular flame at the outer flame hole 12 will not interfere with each other.

[0047] Optionally, the outer flame cap body 11 has an upward-facing annular groove 13, which is located inside the outer flame hole 12, and the annular flame hole 131 is located at the bottom of the annular groove 13. By setting the annular groove 13, the flame at the annular flame hole 131 is made more stable, and the annular groove 13 plays a role in stabilizing the flame.

[0048] Furthermore, to further ensure that the outer ring flame and the ring gap flame do not interfere with each other, the ring gap groove 13 is inclined inward from bottom to top, so that the ring gap flame can be further deviated from the outer ring flame.

[0049] Another aspect of this utility model provides a burner, including a flame distributor 3, an outer ring gas supply pipe 51, and the aforementioned outer flame cover 1. The outer flame cover 1 is disposed on the upper side of the flame distributor 3. The flame distributor 3 has an outer ring gas groove 32 with an upward opening that communicates with the outer flame hole 12. The outer ring gas supply pipe 51 is installed vertically in the lower part of the flame distributor 3 and communicates with the outer ring gas groove 32. The outer ring gas supply pipe 51 is located in the vertical projection of the first region, and the central axis 300 of the outer ring gas supply pipe 51 is collinear with the origin 200 located at the center of the first region.

[0050] Optionally, the inner diameter of the outer ring gas pipe 51 is 30mm-35mm. In this embodiment, the inner diameter of the outer ring gas pipe 51 is 32mm.

[0051] Optionally, it also includes an inner flame cap 2 and an inner ring gas supply pipe 52. The inner flame cap 2 is located inside the outer flame cap 1. The inner flame cap 2 includes an inner flame cap body 21 and multiple inner flame holes 22. The multiple inner flame holes 22 are arranged around the inner flame cap body 21. The flame distributor 3 also has an inner ring gas groove 33 with its opening facing upward and communicating with the inner flame holes 22. The inner ring gas groove 33 is located inside the outer ring gas groove 32. The inner ring gas supply pipe 52 is installed vertically at the lower part of the flame distributor 3 and communicates with the inner ring gas groove 33.

[0052] Optionally, a secondary air channel 100 is formed between the outer flame cap 1 and the inner flame cap 2. The secondary air in the secondary air channel 100 flows upward along the inner side surface 111 to the annular slit flame hole 131. The distance between the outer side of the outer flame hole 12 and the outer side of the inner flame hole 22 is a, 32mm≤a≤40mm. The distance between the outer side of the annular slit flame hole 131 located inside the outer flame hole 12 on the outer flame cap body 11 and the outer side of the inner flame hole 22 is b, 25mm≤b≤32mm. This allows the outer ring flame and the inner ring flame to be close but not interfere with each other, and the annular slit flame and the inner ring flame will not interfere with each other. It can also draw in more secondary air from the secondary air channel 100, resulting in lower smoke and thus improving combustion efficiency.

[0053] For example, in this embodiment, a is 35mm and b is 28mm, which can better control the inner ring flame, outer ring flame and gap flame so that they do not interfere with each other.

[0054] Optionally, it also includes an outer ring ejector tube 41 and an inner ring ejector tube 42, with the inner ring ejector tube 42 connected to the inner ring gas supply pipe 52 and the outer ring ejector tube 41 connected to the outer ring gas supply pipe 51.

[0055] In another aspect, this utility model provides a gas stove, including the burner described above.

[0056] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. An outer flame cap, characterized in that, The device includes an outer flame cap body (11) and a plurality of outer flame holes (12) formed on the outer flame cap body (11). The plurality of outer flame holes (12) are arranged circumferentially along the flame cap body (11). The outer flame holes (12) include a first outer flame hole (121) and a second outer flame hole (122). The outer flame cap body (11) is provided with a first region and a second region. The first outer flame hole (121) is located in the first region, and the second outer flame hole (122) is located in the second region. The diameter of the first outer flame hole (121) is smaller than the diameter of the second outer flame hole (122).

2. The outer flame cap according to claim 1, characterized in that, The first region includes a first partial region (400) and a second partial region (500). The center of the first region is the origin (200), and a circle with the origin (200) as its center has a diameter of... The area within the range is the first local region, with the origin (200) as the center and a diameter of... up to the diameter The area within the range is the second local area. The diameter of the first external flame hole (121) located in the first local area is smaller than the diameter of the first external flame hole (121) in the second local area.

3. The outer flame cap according to claim 2, characterized in that, 4. The outer flame cap according to claim 2, characterized in that, Within the second local region (500), the diameters of the plurality of first external fire holes (121) increase sequentially in a direction away from the origin (200).

5. The outer flame cap according to claim 2, characterized in that, Centered on the origin (200), the second local area is provided with at least two separate areas (501) from the inside to the outside. Each of the separate areas (501) is provided with the first external flame hole (121). Among the first external flame holes (121) of two adjacent separate areas (501), the diameter of the first external flame hole (121) located in the separate area (501) closer to the origin (200) is d1, and the diameter of the first external flame hole (121) located in the separate area (501) farther from the origin (200) is d2, where d1 < d2.

6. The outer flame cap according to claim 5, characterized in that, At least two of the first external fire holes (121) are provided in the separate area (501).

7. The outer flame cap according to any one of claims 1-6, characterized in that, The outer fire cover body (11) is also provided with an annular fire hole (131) located inside the outer fire hole (12).

8. The outer flame cap according to claim 7, characterized in that, The upper side of the outer flame cap body (11) includes an outer side (112) and an inner side (111) located inside the outer side (112). The outer side (112) is inclined downward from the inside to the outside, and the inner side (111) is inclined downward from the outside to the inside. The outer flame hole (12) is opened on the outer side (112), and the circumferential flame hole (131) is opened on the inner side (111).

9. A burner, characterized in that, The device includes a flame divider (3), an outer ring gas pipe (51), and an outer flame cap (1) as described in any one of claims 1-8. The outer flame cap (1) covers the upper side of the flame divider (3). The flame divider (3) includes a flame divider body (31). The flame divider body (31) has an outer ring gas groove (32) with an upward opening that communicates with the outer flame hole (12). The outer ring gas pipe (51) is installed vertically at the lower part of the flame divider (3) and communicates with the outer ring gas groove (32). The outer ring gas pipe (51) is located in the vertical projection of the first region, and the central axis (300) of the outer ring gas pipe (51) is collinear with the origin (200) located at the center of the first region.

10. The burner according to claim 9, characterized in that, The inner diameter of the outer ring gas pipe (51) is 30mm-35mm.

11. The burner according to claim 9, characterized in that, It also includes an inner flame cap (2) and an inner ring gas supply pipe (52). The inner flame cap (2) is located inside the outer flame cap (1). The inner flame cap (2) includes an inner flame cap body (21) and multiple inner flame holes (22). The multiple inner flame holes (22) are arranged around the inner flame cap body (21). The flame distributor (3) also has an inner ring gas groove (33) with its opening facing upward and communicating with the inner flame holes (22). The inner ring gas groove (33) is located inside the outer ring gas groove (32). The inner ring gas supply pipe (52) is installed vertically at the lower part of the flame distributor (3) and communicates with the inner ring gas groove (33).

12. The burner according to claim 11, characterized in that, A secondary air passage (100) is formed between the outer flame cap (1) and the inner flame cap (2) at intervals. The distance between the outer side of the outer flame hole (12) and the outer side of the inner flame hole (22) is a, 32mm≤a≤40mm. The distance between the outer side of the annular slit flame hole (131) located inside the outer flame hole (12) on the outer flame cap body (11) and the outer side of the inner flame hole (22) is b, 25mm≤b≤32mm.

13. A gas stove, characterized in that, Includes the burner according to any one of claims 9-12.

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