Distributor and burner thereof

Abstract

The distributor is provided with an outer ring groove with an upward opening, a plurality of outer ring flow dividing holes are formed in the groove bottom of the outer ring groove at intervals in the circumferential direction, and the outer ring flow dividing holes are communicated with the outer ring groove to form an outer ring air channel. The horizontal cross sectional areas of all the outer ring flow dividing holes are gradually increased in the clockwise or anticlockwise direction. According to the distributor disclosed by the utility model, the uniformity of gas and air in the outer ring in the distributor is realized, and the mixture of the gas and the air in the outer ring is ensured to be uniformly sprayed out from the outer ring fire holes, so that the flame height of the outer ring is kept consistent. The utility model further discloses a burner.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stoves, in particular to a burner and its burner head Background Art

[0002] In order to meet the needs of high-firepower combustion, flame uniformity and firepower adjustment, the outer ring burner head and the inner ring burner head of the existing stove burner adopt a split and double-ring concentric structure. The common existing method for supplementing secondary air is to reserve a certain channel between the outer ring burner head and the inner ring burner head, and the secondary air enters the channel through the bottom of the outer ring burner head. However, the liquid in the overflowing pot will flow into and accumulate in the channel, making it very difficult to clean

[0003] The existing burner head can achieve the gas distribution effect, but has a single function and cannot keep the flame height consistent. In addition, the height of the burner head of the existing burner is usually relatively high, the height from it to the glass panel is more than 40 mm, and the height of the pot support is more than 62 mm, resulting in a rather abrupt overall effect and affecting the aesthetics of the gas stove and the style matching of the whole household Summary of the Invention

[0004] The utility model aims to solve at least one of the problems existing in the related art to a certain extent. Therefore, the utility model provides a burner head to realize the uniformity of the gas and air in the outer ring of the uniform burner head, ensure that the mixture of the gas and air in the outer ring container evenly sprays out from the outer ring fire holes, so as to keep the outer ring flame height consistent. The utility model also provides a burner

[0005] According to the provided burner head, it is realized through the following technical solutions

[0006] A burner head, which is provided with an outer ring groove with an upward opening, and a plurality of outer ring shunt holes arranged at circumferential intervals are opened at the bottom of the outer ring groove. The plurality of outer ring shunt holes are respectively communicated with the outer ring groove to form an outer ring air passage, and the horizontal cross-sectional areas of all the outer ring shunt holes gradually increase in the clockwise or counterclockwise direction

[0007] In some embodiments, all the outer ring shunt holes are vertically arranged, or all the outer ring shunt holes are inclinedly arranged in the clockwise or counterclockwise direction

[0008] In some embodiments, the inclination angle of the outer ring shunt hole is - degrees. Further, an annular support platform and / or a plurality of installation columns arranged at circumferential intervals are provided in the outer ring groove

[0009] In some embodiments, the burner head further comprises an annular guiding part, and the annular guiding part is arranged outside the outer ring groove

[0010] In some embodiments, the burner head further has an inner annular air passage and a middle annular air passage for secondary air to pass through, and the middle annular air passage is disposed between the inner annular air passage and the outer annular groove. Further, a third through hole is provided in the middle annular air passage.

[0011] In some embodiments, the burner head has a middle annular groove with an upward opening, and a plurality of middle annular air holes arranged at circumferential intervals are formed in the bottom surface of the middle annular groove. The plurality of middle annular air holes are respectively communicated with the middle annular groove to form the middle annular air passage.

[0012] In some embodiments, a third through hole is formed in the bottom surface of the middle annular groove, and the third through hole is disposed between all the middle annular air holes and the inner annular air passage.

[0013] In some embodiments, an inner annular groove with an upward opening is provided at the central position of the burner head, and a central through hole and / or a plurality of inner annular diversion holes are formed in the bottom surface of the inner annular groove. The central through hole and / or the plurality of inner annular diversion holes are communicated with the inner annular groove to form the inner annular air passage.

[0014] According to a burner provided above, it is realized by the following technical solutions:

[0015] A burner includes: a burner base having an upward-opening outer mixing chamber; the above-described burner head covering the top of the burner base; and an outer flame cover disposed on the burner head. The outer flame cover has a downward-opening outer annular chamber and an outer flame hole group, and the outer flame hole group is sequentially communicated with the outer mixing chamber through the outer annular chamber and the outer annular air passage.

[0016] In some embodiments, the annular guiding portion of the burner head is arranged outside the outer flame cover and lower than the top of the lower edge of the outer flame cover for guiding the overflow liquid flowing down from the outer flame cover to the liquid receiving tray.

[0017] In some embodiments, the burner base further has an upward-opening inner mixing chamber and / or an upward-opening air chamber, and a secondary air inlet communicated with the air chamber is provided at the bottom of the cavity or the lower end of the outer cavity wall of the air chamber; the outer flame cover further has a central chamber and / or a secondary air passage. The lower end of the central chamber is communicated with the inner mixing chamber through the inner annular air passage of the burner head, and the secondary air passage is communicated with the air chamber through the middle annular air passage of the burner head.

[0018] In some embodiments, an inner flame cover is further included. The inner flame cover covers the top of the outer flame cover and has a downward-opening inner annular chamber and a plurality of inner flame holes. The plurality of inner flame holes are communicated with the upper end of the central chamber through the inner annular chamber.

[0019] In some embodiments, the orthographic projection of the inner fire cap covers the upper end outlet of the secondary air passage, and a secondary air inlet is formed between the bottom of the inner fire cap and the top of the outer fire cap. The secondary air inlet is communicated with the air outlet end of the secondary air passage; and / or a drainage channel is recessed in the top of the outer fire cap. The drainage channel is used for receiving the overflow liquid flowing down from the inner fire cap, and is also used for draining the overflow liquid on the outer fire cap to the annular diversion part of the burner.

[0020] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0021] 1. For the burner of the present utility model, by providing a plurality of outer ring diversion holes arranged at circumferential intervals at the bottom of the groove of the outer ring of the burner, the horizontal cross-sectional areas of all the outer ring diversion holes gradually increase in the clockwise or counterclockwise direction. While preventing the air flow from interfering with each other, the uniformity of the outer ring gas and air in the burner is achieved by the area of the outer ring diversion holes, ensuring that the mixture of the outer ring combustible gas and air uniformly sprays out from the outer ring fire holes, so that the heights of the outer ring flames are kept consistent.

[0022] 2. By providing an annular diversion part on the burner located outside the outer ring groove, it is convenient to drain the overflow liquid flowing down from the outer fire cap to the liquid receiving tray through the annular diversion part, which is beneficial to improving the easy cleaning performance of the burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an exploded view of the fire cap assembly in an embodiment of the present utility model;

[0024] Figure 2 is a structural schematic diagram of the fire cap assembly in an embodiment of the present utility model;

[0025] Figure 3 is a cross-sectional view of the fire cap assembly in an embodiment of the present utility model;

[0026] Figure 4 is a structural schematic diagram of the inner fire cap in an embodiment of the present utility model Figure 1 ;

[0027] Figure 5 is a structural schematic diagram of the inner fire cap in an embodiment of the present utility model Figure 2 ;

[0028] Figure 6 is a cross-sectional view of the inner fire cap in an embodiment of the present utility model;

[0029] Figure 7 is a structural schematic diagram of the outer fire cap in an embodiment of the present utility model;

[0030] Figure 8 is a bottom view of the outer fire cap in an embodiment of the present utility model;

[0031] Figure 9 is a schematic structural view of the flame divider in the embodiment of the present utility model;

[0032] Figure 10 is a bottom view of the flame divider in the embodiment of the present utility model;

[0033] Figure 11 is an exploded view of the burner in the embodiment of the present utility model;

[0034] Figure 12 is a schematic structural view of the burner in the embodiment of the present utility model;

[0035] Figure 13 is a sectional view of the burner in the embodiment of the present utility model;

[0036] Figure 14 is a right view of the gas stove in the embodiment of the present utility model;

[0037] Figure 15 is a schematic structural view of the gas stove in the embodiment of the present utility model.

[0038] In the figure: 1 - inner fire cap, 10 - inner ring cavity, 11 - enclosing plate, 111 - inner ring fire holes, 112 - inner ring retaining ring, 113 - fixing column, 114 - positioning part, 12 - top plate, 121 - liquid storage tank, 13 - ignition boss, 131 - horizontal section, 132 - vertical section, 1321 - ignition holes, 1322 - air guiding channels, 1323 - guiding surface, 14 - brim, 141 - first through hole, 142 - outer inclined surface;

[0039] 2 - outer fire cap, 20 - secondary air outlet, 21 - central cavity, 22 - air cavity, 220 - second through hole, 221 - secondary air holes, 222 - annular flow guiding groove, 223 - water retaining rib, 224 - upper annular retaining ring, 23 - outer ring cavity, 231 - outer ring fire holes, 232 - strip-shaped flow guiding groove, 25 - first connecting part, 251 - first fixing hole, 26 - second connecting part, 261 - second fixing hole;

[0040] 3 - flame divider, 31 - inner ring air duct, 310 - inner ring groove, 311 - central through hole, 312 - inner ring shunt holes, 32 - middle ring air duct, 321 - middle ring groove, 322 - middle ring air holes, 323 - third through hole, 33 - outer ring air duct, 331 - outer ring groove, 332 - outer ring shunt holes, 333 - annular support platform, 334 - mounting column, 34 - annular flow guiding part, 351 - inner ring separating rib, 352 - outer ring separating rib;

[0041] 4-burner head, 41-burner head body, 411-inner mixing chamber, 4111-inner ring premixing head, 412-air chamber, 4121-secondary air inlet, 413-outer mixing chamber, 4131-outer ring premixing head, 42-ejector assembly;

[0042] 5-liquid pan; 6-ignition assembly; 7-housing assembly; 8-pot support. Detailed implementation mode

[0043] The following embodiments illustrate the present invention, but the present invention is not limited by these embodiments. Modifying the specific implementation mode of the present invention or equivalently replacing some technical features without departing from the spirit of the present invention scheme shall be covered within the scope of the technical solution claimed by the present invention.

[0044] Embodiment 1

[0045] Reference Figures 1 - 10 , this embodiment provides a burner head. The burner head 3 is an integrally formed structure. The burner head 3 is provided with an outer ring groove 331 with an upward opening. At the bottom of the outer ring groove 331, a plurality of outer ring diversion holes 332 are arranged at circumferential intervals. The plurality of outer ring diversion holes 332 are respectively communicated with the outer ring groove to form an outer ring air passage 33. The outer ring air passage 33 is used for the mixture of outer ring gas and air to pass through.

[0046] Furthermore, the horizontal cross-sectional area of all the outer ring diversion holes 332 gradually increases in the clockwise or counterclockwise direction. In this embodiment, taking the horizontal cross-sectional area of all the outer ring diversion holes 332 gradually increasing in the clockwise direction as an example, that is, the area of the outer ring diversion hole 332 at the outlet of the outer ring ejector tube of the burner head 3 corresponding to the burner head is the smallest, and then gradually increases along the clockwise direction. Thus, while preventing the air flow from interfering with each other, it is convenient to control the uniformity of the outer ring gas and air in the burner head 3 by controlling the area of the outer ring diversion holes 332, ensuring that the mixture of the outer ring gas and air uniformly sprays upward from the outer ring flame holes of the burner, so as to keep the height of the outer ring flame consistent.

[0047] Reference Figures 9 - 10 , in this embodiment, all the outer ring diversion holes 332 are arranged obliquely in the clockwise or counterclockwise direction, and the inclination angle of the outer ring diversion holes 332 is 30-60 degrees. In this way, through the obliquely arranged outer ring diversion holes 332, the mixture of the outer ring gas and air will spray upward from the burner head 3 at a certain angle to form a rotating air flow at a certain angle, which is beneficial to increasing the rotation of the air flow and further improving the premixing effect of the mixture. In other implementation modes, all the outer ring diversion holes 332 can be designed to be vertically arranged.

[0048] Specifically, an annular support platform 333 and / or a plurality of mounting posts 334 arranged at circumferential intervals are provided in the outer ring groove 331. The annular support platform 333 is integrally formed with the outer groove wall of the outer ring groove and is used to support the outer fire cap. The mounting posts 334 are arranged radially inside the annular support platform and are integrally formed with the groove bottom surface of the outer ring groove and the annular support platform respectively, and are used for detachably connecting with the outer fire cap.

[0049] Reference Figures 9 - 10 , Further, the burner 3 is further provided with an annular diversion portion 34. The annular diversion portion 34 is arranged outside the outer ring groove 331 and is used to divert the overflow liquid flowing down from the outer fire cap to the liquid receiving tray. In this embodiment, the annular diversion portion 34 is in a conical shape or a frustum shape with a large lower end and a small upper end. When the burner 3 is installed at the bottom of the outer fire cap, the annular diversion portion 34 of the burner 3 is arranged outside the outer fire cap 2 and is lower than the top of the lower edge of the outer fire cap 2 (see Figures 2 - 3 ), so as to ensure that the annular diversion portion can divert the overflow liquid flowing down from the outer fire cap 2 to the liquid receiving tray 5 of the gas stove.

[0050] Reference Figures 9 - 10 , Further, the burner 3 is further provided with an inner ring air passage 31 and a middle ring air passage 32 for secondary air to pass through. The inner ring air passage 31 is used for the mixture of inner ring gas and air to pass through. The middle ring air passage 32 is arranged between the inner ring air passage 31 and the outer ring groove 331 and is used for secondary air to pass through. A third through hole 323 for the ignition needle to pass through is provided in the middle ring air passage.

[0051] Specifically, a middle ring groove 321 with an upward opening is provided on the burner 3. A third through hole 323 and a plurality of middle ring air holes 322 arranged at circumferential intervals are opened on the groove bottom surface of the middle ring groove 321. The plurality of middle ring air holes 322 are respectively communicated with the middle ring groove 321 to form the middle ring air passage 32. The third through hole 323 is arranged between all the middle ring air holes 322 and the inner ring air passage 31, so that the burner 3 can evenly distribute the secondary air and at the same time facilitate the assembly of the ignition component through the third through hole 323.

[0052] An inner ring groove 310 with an upward opening is provided at the central position of the burner 3. A central through hole 311 and a plurality of inner ring diversion holes 312 are opened on the groove bottom surface of the inner ring groove 310. The plurality of inner ring diversion holes 312 are circumferentially arranged outside the central through hole. The central through hole 311 and the plurality of inner ring diversion holes 312 are respectively communicated with the inner ring groove 310 to form the inner ring air passage 31, so that the burner 3 can evenly distribute the mixture of inner ring gas and air, enhance the premixing effect and improve the combustion stability of the inner ring flame. In other embodiments, the central through hole 311 or the plurality of inner ring diversion holes 312 can be omitted.

[0053] Reference Figures 1 - 3 andFigures 9 - 10 In this embodiment, the fire distributor 3 has a receiving groove (not shown in the figure) with an upward opening and adapted to receive the outer fire cover, so that the lower end of the outer fire cover 2 is inserted into the receiving groove of the fire distributor, thereby reducing the thickness of the fire cover assembly in the vertical direction and further reducing the protrusion degree of the fire cover assembly on the glass panel. An inner ring separating rib 351 and an outer ring separating rib 352 located outside the inner ring separating rib are provided in the receiving groove of the fire distributor 3 to divide the receiving groove into an inner ring groove 310, a middle ring groove 321, and an outer ring groove 331 arranged at intervals in the radial direction.

[0054] Embodiment 2

[0055] Reference Figures 1 - 15 In this embodiment, a burner is provided, which includes a burner head 4, a fire distributor as described in Embodiment 1, and an outer fire cover 2. The burner head 4 includes a burner head body 41 and an ejector assembly 42. The ejector assembly 42 is detachably connected to the burner head body 41 to facilitate processing and manufacturing, improve production efficiency, and reduce manufacturing costs. Of course, it can also be integrally formed. An inner mixing chamber 411 with an upward opening, an air chamber 412 with an upward opening, and an outer mixing chamber 413 with an upward opening are provided on the burner head body 41 of the burner head 4. The inner mixing chamber 411 is arranged between the outer mixing chamber 413 and the air chamber 412. A secondary air inlet 4121 is provided at the bottom of the cavity or the lower end of the outer cavity wall surface of the air chamber 412. A liquid receiving tray 5 detachably connected to the burner head 4 is sleeved on the upper end of the burner head body 41 of the burner head 4.

[0056] Reference Figures 11 - 13 Specifically, the secondary air inlet 4121 is provided at the lower end of the outer cavity wall surface of the air chamber 412, and the secondary air inlet 4121 faces the bottom of the outer mixing chamber 413, so as to prevent the cleaning liquid from flowing into the housing assembly of the gas stove through the secondary air inlet when cleaning the burner head 4. An inner ring premixing head 4111 extending downward is integrally formed at the bottom of the burner head body 41 of the burner head 41, and an outer ring premixing head 4131 extending downward is integrally formed at the bottom of the burner head body 41 of the burner head 41. The inner ejector tube in the ejector assembly 42 is connected to the inner mixing chamber 411 through the inner ring premixing head, and the outer ejector tube in the ejector assembly 42 is connected to the outer mixing chamber 413 through the outer ring premixing head.

[0057] Reference Figures 1 - 3 and Figures 11 - 15 The fire distributor 3 covers the top of the burner head 4. The outer fire cover 2 is arranged on the fire distributor 3 and is detachably connected to the fire distributor 3. The outer fire cover 2 is provided with an outer ring cavity 23 with a downward opening and an outer fire hole group. The outer fire hole group is sequentially connected to the outer mixing chamber 413 through the outer ring cavity 23 and the outer ring air duct 33. Reference Figures 7 - 8, in this embodiment, the outer flame hole group is arranged on the top of the outer fire cap 3 and includes a plurality of outer ring flame holes 231 arranged at intervals, which is beneficial to reducing the height of the outer fire cap 2 to meet the ultra-thin requirement and improving the uniformity of the outer ring firepower. Since the burner 3 is provided with an annular diversion part 34 located outside the outer ring groove 331, when the outer fire cap is installed on the burner, the annular diversion part 34 of the burner 3 is arranged outside the outer fire cap 2 and lower than the top of the lower edge of the outer fire cap 2, so that the annular diversion part 34 can divert the overflow liquid flowing down from the outer fire cap to the liquid receiving tray below it (refer to Figure 15 ).

[0058] In this embodiment, the outer fire cap 2 is also provided with a central cavity 21 and a secondary air passage. The lower end of the central cavity 21 is connected to the internal mixing chamber 411 of the burner head 4 through the inner ring air passage 31 of the burner 3, and the secondary air passage is connected to the air chamber 412 through the middle ring air passage 32 of the burner. In this way, the outer fire cap 2 can not only meet the requirements of the outer ring fire, but also has the function of transmitting the inner ring gas and secondary air. In other embodiments, the central cavity and / or the secondary air passage on the outer fire cap can be omitted.

[0059] Refer to Figures 7 - 8 , specifically, the outer fire cap 2 is provided with an air cavity 22 with a downward opening, which is located between the central cavity and the outer ring cavity. An air hole group for the passage of secondary air is provided on the top of the outer fire cap 2. The air hole group includes a plurality of secondary air holes 221 arranged at circumferential intervals, and the air hole group is connected to the air cavity 22 to form a secondary air passage.

[0060] Furthermore, an annular diversion groove 222 with an upward opening and located between the inner air hole group and the outer flame hole group is recessed on the top of the outer fire cap 2. The annular diversion groove 222 is configured to receive the overflow liquid (i.e., the overflow) flowing down from the inner fire cap 1 to prevent this part of the overflow liquid from flowing into the outer ring flame holes 231 or the secondary air holes 221, so as to solve the problem that the reserved secondary air passage between the outer ring fire cap and the inner ring fire cap of the existing burner affects the internal cleanliness of the burner. In addition, a plurality of strip-shaped diversion grooves 232 with upward openings are recessed on the radially outer side of the top of the outer fire cap 2. All the strip-shaped diversion grooves 232 are arranged at circumferential intervals, and each strip-shaped diversion groove 232 is arranged in the radial direction. In this way, the overflow liquid on the outer fire cap 2 can flow out of the outer fire cap 2 along the strip-shaped diversion grooves 232 and then flow into the liquid receiving tray along the annular diversion part 34 of the burner 3, so that the outer fire cap 2 has the function of overflow liquid diversion and thus has good easy-cleaning performance.

[0061] In this embodiment, the radially inner ends of the strip-shaped diversion grooves 232 are respectively communicated with the annular diversion groove 222 to form a drainage channel, so that the overflow liquid in the annular diversion groove can flow out of the outer burner cap 2 along the strip-shaped diversion grooves 232. The strip-shaped diversion grooves 232 are arranged to incline radially outward and downward from the annular diversion groove 222, so as to facilitate the rapid discharge of the overflow liquid out of the outer burner cap 2. In addition, the number of the strip-shaped diversion grooves 232 is the same as the number of the legs of the pot support, and the strip-shaped diversion grooves 232 are arranged opposite to the legs of the pot support 8 (see Figure 15 ), so that the strip-shaped diversion grooves 232 can catch the overflow liquid flowing down from the legs of the pot support, and can also prevent the legs of the pot support from being burned by the flame, which is beneficial to reducing the temperature rise of the pot support and the panel of the gas stove.

[0062] An outer fire hole group is provided between adjacent strip-shaped diversion grooves 232, that is, the outer ring fire holes 231 are evenly distributed in the area on the top of the outer burner cap 2 between adjacent strip-shaped diversion grooves 232, so as to realize the zoning of the outer ring firepower while making the outer ring firepower distribution more uniform and the firepower range wider.

[0063] Refer to Figures 7 - 8 , further, a water retaining rib 223 extending upward and located between adjacent strip-shaped diversion grooves 232 is integrally formed on the top of the outer burner cap 2. The water retaining rib 223 is arranged on the radially outer side of the annular diversion groove 222. The height of the water retaining rib 223 is 1.5 mm, 2 mm or 2.5 mm. In this embodiment, the water retaining rib 223 constitutes the upper end of the outer groove wall of the annular diversion groove 222. In other embodiments, the water retaining rib may also be arranged at intervals from the outer groove wall of the annular diversion groove 222. Thus, when the overflow liquid from the inner burner cap 1 flows downward into the annular diversion groove 222 of the outer burner cap 2, due to the blocking effect of the water retaining rib 223, it will not flow into the outer ring fire holes.

[0064] Refer to Figures 7 - 8 , further, a second through hole 220 communicated with the air cavity 22 is provided on the top of the outer burner cap 2. The second through hole 220 is used for the ignition needle to pass through. An upper annular retaining ring 224 extending upward is integrally formed on the radially inner side of the top of the outer burner cap 2. The upper annular retaining ring 224 constitutes the upper end of the central cavity 21, so as to facilitate the sealing connection of the outer burner cap 2 with the inner burner cap through the upper annular retaining ring 224.

[0065] In this embodiment, the radially outer side of the top of the outer fire cap 2 is an outer guiding surface, and the radially inner side of the top of the outer fire cap 2 is an inner guiding surface or an inner flat surface. Both the inner guiding surface and the outer guiding surface are arranged to be inclined or curved from the inside to the radially outer side and downward, so that the outer fire cap 2 is in a conical shape or a frustum shape with a larger lower end and a smaller upper end, which is beneficial to reducing the thickness of the outer fire cap. The outer fire hole group and the strip-shaped drainage groove are both arranged on the outer guiding surface, so that the outer fire hole group and the strip-shaped drainage groove are both arranged to be inclined in the radial direction, facilitating the drainage of overflow liquid and gas, and at the same time, an outer ring fire with different heights can be formed, making the distribution of the outer ring firepower more uniform; the air hole group and the second through hole 220 are both arranged on the inner guiding surface or the inner flat surface; the annular drainage groove can be arranged at the radially outer end of the inner guiding surface or the inner flat surface, or can be arranged at the radially inner end of the outer guiding surface.

[0066] Reference Figure 8 , in the air cavity 22, a plurality of first connecting parts 25 are arranged at circumferential intervals and close to the central cavity 21. The first connecting parts 25 are integrally formed with the cavity top surface and the cavity inner side wall surface of the air cavity 22 respectively. First fixing holes 25 are formed in the first connecting parts 25 and penetrate through them and the top of the outer fire cap 2 respectively, so that the outer fire cap 2 can be detachably connected to the inner fire cap as a whole through the first connecting parts 25 (see Figure 3 or Figure 13 ). In the outer ring cavity 23, a plurality of second connecting parts 26 are arranged at circumferential intervals and far from the air cavity 22. The second connecting parts 26 are integrally formed with the cavity top surface and the cavity outer side wall surface of the outer ring cavity 23 respectively. The second connecting parts 26 are provided with second fixing holes 261 opening downward, so that the outer fire cap 2 can be detachably connected to the burner through the second connecting parts 26 (see Figure 3 ).

[0067] Embodiment 3

[0068] Reference Figures 1 - 15 , the difference between this embodiment and Embodiment 2 is that the burner further includes an inner fire cap 1. The inner fire cap 1 covers the top of the outer fire cap 2, and it has an inner ring cavity 10 opening downward and a plurality of inner ring fire holes 111. The plurality of inner ring fire holes 111 are communicated with the upper end of the central cavity 21 through the inner ring cavity 10.

[0069] Furthermore, the orthographic projection of the inner fire cap 1 covers the upper end outlet of the secondary air passage. A secondary air inlet 20 is formed between the bottom of the inner fire cap 1 and the top of the outer fire cap 2. The secondary air inlet 20 is connected to the air outlet end of the secondary air passage (i.e., the air hole group of the outer fire cap). Thus, on the one hand, the secondary air can only flow out from the gap after the superposition of the inner fire cap 1 and the outer fire cap 2, realizing the supplement of the secondary air required for the combustion of the inner and outer ring fires from the side of the fire cap assembly for the burner, making the combustion of the inner and outer ring fires more sufficient, effectively supporting the stable combustion of the large firepower of the ultra-thin burner, and solving the problem that the firepower of the existing ultra-thin burner is not large enough; on the other hand, the air hole group on the outer fire cap (i.e., the upper end outlet of the secondary air passage) is hidden directly below the inner fire cap 1, so that the liquid overflowing from the pot cannot directly flow downward into the burner through the air hole group, but can only drip along the inner fire cap 1 to the top of the outer fire cap 2, and then flow into the liquid receiving tray along the drainage channel of the outer fire cap 2 and the annular diversion part of the fire divider in sequence, thereby making the fire cap assembly and the inside of the burner easier to clean.

[0070] Reference Figures 1 - 6 , in this embodiment, the inner fire cap 1 is an integrally formed structure, and its diameter gradually decreases from bottom to top. The inner fire cap 1 includes a surrounding plate 11, a top plate 12 and an ignition boss 13. The surrounding plate 11 is in the shape of a frustum of a cone with a larger bottom and a smaller top and forms the side wall of the inner fire cap. An inner fire hole group is provided on the surrounding plate 11, and the inner fire hole group is composed of a plurality of inner ring fire holes 111 arranged at circumferential intervals. The top plate 12 forms the top of the inner fire cap. The top plate 12 is fixedly connected to the upper end or top of the surrounding plate 11 and is integrally formed with it. The top plate 12 and the surrounding plate 11 jointly enclose an inner ring cavity 10 opening downward, and the inner ring cavity 10 is connected to a plurality of inner ring fire holes 111. The ignition boss 13 is fixedly connected to the outer wall surface of the surrounding plate 11 and is integrally formed with it. It includes a horizontal section 131 and a vertical section 132 fixedly connected into a "7" shape. The horizontal section 131 is fixedly connected to the outer wall surface of the surrounding plate 11 through the vertical section 132. On the side of the vertical section 132 facing away from the top plate 12, there are a plurality of ignition holes 1321 located directly below the horizontal section 131 and connected to the inner ring cavity 10.

[0071] It can be seen that by designing the surrounding plate 11 of the inner fire cap 1 as a frustum of a cone, and fixedly connecting the top plate 12 to the upper end or top of the surrounding plate 11, and fixedly connecting the ignition boss 13 to the outer wall surface of the surrounding plate 11, compared with the existing inner fire cap, the height of the inner fire cap in the vertical direction is reduced, so that the distance H1 between the inner fire cap 1 and the top surface of the outer shell assembly 7 of the gas stove is less than 20 mm (see Figure 14 ), solving the problem that the existing inner fire cap protrudes too high from the glass panel and affects the overall aesthetic effect of the kitchen. In addition, the ignition needle of the burner can be effectively protected by the ignition boss 13, preventing the overflow liquid from flowing onto the head of the ignition needle and affecting the ignition effect (see Figure 13 ).

[0072] Reference Figure 6 Figure 6 , at least one air guiding channel 1322 arranged vertically is provided in the vertical section 132. The upper and lower ends of the air guiding channel 1322 are respectively communicated with the inner ring cavity 10 and the corresponding ignition holes 1321 to realize upward transmission of the outer ring gas in the inner ring cavity 10 to the ignition holes. Reference Figures 4 - 6 Figures 4 - 6 , in this embodiment, the radially outer end of the vertical section 132 is flush with the lower edge of the surrounding plate 11 to achieve overall aesthetics; a guiding surface 1323 is formed on the surface of the vertical section 132 facing the top plate 12. The guiding surface 1323 is an arc surface or an inclined surface, and the lower edge of the guiding surface 1323 extends downward to the top of the top plate 12 to quickly guide the overflow liquid dripping onto the ignition boss 13 to the top plate 12 of the inner fire cover 1.

[0073] Reference Figures 4 - 6 Figures 4 - 6 , specifically, a plurality of inner ring fire holes 111 are evenly distributed in the area of the surrounding plate 11 outside the ignition boss 13, which is beneficial to improving the unit air outlet area and air outlet uniformity. Since the surrounding plate 11 is in the shape of a frustum of a cone with a larger lower end and a smaller upper end, different heights of inner ring fires can be formed, making the inner ring fire power distribution more uniform. A liquid receiving groove 121 with an upward opening is recessed in the top of the top plate 12 so that the inner fire cover 1 can receive the overflow liquid of the pot, effectively preventing the overflow liquid from flowing into the inner ring fire holes of the inner fire cover 1, and further avoiding the blockage of the inner ring fire holes 111 by the overflow liquid and the inflow of the overflow liquid into the burner, thus achieving the purpose of easy cleaning of the inner fire cover 1 and the burner. In other embodiments, the top surface of the top plate 12 can be designed as a flat surface. Of course, the top surface of the top plate 12 can also be designed as an inner inclined surface, and the inner inclined surface is arranged obliquely upward from the surrounding plate 11 towards the central axis of the inner fire cover.

[0074] Further, an inner ring retaining ring 112 extending downward is fixedly provided on the peripheral edge of the lower end of the surrounding plate 11 to facilitate the sealing connection and cooperation between the inner fire cover 1 and the upper annular retaining ring 224 on the outer fire cover 2. A plurality of fixing columns 113 arranged at circumferential intervals and extending outward are provided on the inner ring retaining ring 112, and the plurality of fixing columns 113 are arranged in one-to-one correspondence with the first connection parts on the outer fire cover to facilitate the stable, reliable and detachable connection and fixation of the inner fire cover 1 on the top of the outer fire cover 2. A positioning part 114 extending outward is provided on the outer side wall of the inner ring retaining ring 112 at a position corresponding to the ignition boss 13. The positioning part is used to strengthen the overall strength of the inner fire cover 1 and also used to abut against the top of the outer fire cover 2.

[0075] Reference Figures 4 - 6, Further, the inner fire cap 1 further includes a brim 14. An outwardly extending brim 14 is integrally formed at the lower peripheral edge of the peripheral plate 11 of the inner fire cap 1. The orthographic projection of the brim 14 covers the air hole group on the outer fire cap. A secondary air outlet 20 is formed between the brim 14 and the top of the outer fire cap 2. The secondary air outlet 20 is connected to the air cavity 22 through the air hole group. In this embodiment, the brim 14 is conical or frustum-shaped with a larger lower end and a smaller upper end, so that an outer inclined surface 142 is formed on the top surface of the brim 14. The outer inclined surface 142 is arranged obliquely downward from the peripheral plate 11 towards the radial outside of the brim 14, so that the liquid dripping onto the brim 14 can automatically flow out of the inner fire cap 1 downward along the outer inclined surface 14.

[0076] After the inner fire cap is superimposed on the top of the outer fire cap, the radially outer end of the brim 14 is arranged opposite to the annular diversion groove 222 of the outer fire cap 1, so that the annular diversion groove 222 can catch the overflow liquid flowing down from the brim 14. A first through hole 141 for the ignition needle to pass through is provided at the position of the brim 14 corresponding to the ignition boss 13. The first through hole 141 is located directly below the transverse section of the ignition boss 13. The first through hole 141 penetrates downward through the positioning portion 114 of the inner fire cap 1 and is connected to the second through hole on the outer fire cap 2 to avoid affecting the assembly of the ignition component due to the setting of the brim.

[0077] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A fire divider, characterized in that The burner is provided with an outer ring groove (331) with an upward opening. A plurality of outer ring diversion holes (332) arranged at circumferential intervals are formed at the groove bottom of the outer ring groove (331). The plurality of outer ring diversion holes (332) are respectively communicated with the outer ring groove to form an outer ring air passage (33). The horizontal cross-sectional areas of all the outer ring diversion holes (332) gradually increase in the clockwise or counterclockwise direction.

2. The sub-firearm according to claim 1, characterized in that, All the outer ring diversion holes (332) are vertically arranged, or all the outer ring diversion holes (332) are inclinedly arranged in the clockwise or counterclockwise direction.

3. A kind of fire distributor according to claim 2, characterized in that, The inclination angle of the outer ring diversion holes (332) is 30-60 degrees.

4. A kind of flame divider according to claim 1, characterized in that, The burner is further provided with an annular diversion part (34), and the annular diversion part (34) is arranged outside the outer ring groove (331).

5. A kind of fire divider according to any one of claims 1-4, characterized in that, The burner is further provided with an inner ring air passage (31) and a middle ring air passage (32) for secondary air to pass through. The middle ring air passage (32) is arranged between the inner ring air passage (31) and the outer ring groove (331).

6. The fire divider according to claim 5, characterized in that, The burner is provided with a middle ring groove (321) with an upward opening. A plurality of middle ring air holes (322) arranged at circumferential intervals are formed at the groove bottom surface of the middle ring groove (321). The plurality of middle ring air holes (322) are respectively communicated with the middle ring groove (321) to form the middle ring air passage (32).

7. A kind of fire divider according to claim 6, characterized in that, A third through hole (323) is formed at the groove bottom surface of the middle ring groove (321), and the third through hole (323) is arranged between all the middle ring air holes (322) and the inner ring air passage (31).

8. A kind of fire distributor according to claim 5, characterized in that, An inner ring groove (310) with an upward opening is arranged at the central position of the burner. A central through hole (311) and / or a plurality of inner ring diversion holes (312) are formed at the groove bottom surface of the inner ring groove (310). The central through hole (311) and / or the plurality of inner ring diversion holes (312) are communicated with the inner ring groove (310) to form the inner ring air passage (31).

9. A burner, characterized in that, Including: A burner head (4) provided with an outer mixing chamber (413) with an upward opening; A burner as described in any one of claims 1-8, the burner covering the top of the burner head (4); and An outer flame cover (2) arranged on the burner. The outer flame cover (2) is provided with an outer ring cavity (23) with a downward opening and an outer flame hole group. The outer flame hole group is sequentially communicated with the outer mixing chamber (413) through the outer ring cavity (23) and the outer ring air passage (33).

10. A burner according to claim 9, characterized in that, The annular diversion part (34) of the burner is arranged outside the outer flame cover (2) and lower than the top of the lower edge of the outer flame cover (2) for diverting the overflow liquid flowing down from the outer flame cover (2) to a liquid receiving tray.

11. A burner according to claim 9, characterized in that, The burner head (4) is further provided with an inner mixing chamber (411) with an upward opening and / or an air chamber (412) with an upward opening. A secondary air inlet (4121) communicated with the air chamber (412) is arranged at the bottom of the cavity or the lower end of the outer cavity wall surface of the air chamber (412); The outer burner cap (2) is further provided with a central cavity (21) and / or a secondary air passage. The lower end of the central cavity (21) is communicated with the internal mixing chamber (411) through the inner ring air passage (31) of the burner head. The secondary air passage is communicated with the air chamber (412) through the middle ring air passage (32) of the burner head.

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