Fire distributor, burner and gas stove

Abstract

The utility model provides a fire distributor, burner and gas stove, the fire distributor includes: a fire distribution seat, including a bottom wall, an inner ring wall and an outer ring wall together enclose a first gas distribution groove with an opening at the top, the bottom wall is provided with an outer ring gas inlet communicated with the first gas distribution groove, the inner ring wall is provided with an inner ring gas inlet communicated with the outer ring gas inlet, and the outer ring gas inlet is provided with an outer ring gas outlet communicated with the inner ring gas inlet; the depth of the first gas distribution groove is gradually reduced in the direction far away from the outer ring gas inlet; and the outer ring fire cover covers an opening of the first gas distribution groove in a sealing mode, the outer ring fire cover and the first gas distribution groove jointly form an outer ring gas distribution channel, and outer ring fire holes are formed in the outer ring fire cover. According to the distributor disclosed by the embodiment of the utility model, the depth of the air inlet of the outer ring is increased, the axial flow distance of combustion gas at the air inlet of the outer ring is increased, and enough space is favorably provided for converting a velocity field into a pressure field.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen equipment, and particularly relates to a burner head, a burner and a gas stove. Background Art

[0002] With the increase in living costs and the improvement of living quality, enterprises need to reduce costs, while users have higher requirements for cooking, demanding greater and more uniform firepower. Therefore, higher requirements are put forward for burners. The excessive resistance formed by the insufficient axial space at the outer ring air inlet of the burner results in less primary air being inhaled, incomplete combustion, high flue gas, and reduced thermal efficiency. Summary of the Utility Model

[0003] Embodiments of the utility model provide a burner head, a burner and a gas stove to solve at least some of the above technical problems existing in the prior art.

[0004] According to the first aspect of the embodiments of the utility model, a burner head is provided, including:

[0005] A burner base, including a first gas distribution groove formed by jointly enclosing a bottom wall, an inner ring wall and an outer ring wall, having an opening at the top, and an outer ring air inlet communicating with the first gas distribution groove on the bottom wall, the depth of the first gas distribution groove gradually decreasing in a direction away from the outer ring air inlet;

[0006] An outer ring burner cap, which seals the opening of the first gas distribution groove and jointly forms an outer ring gas distribution channel with the first gas distribution groove, and the outer ring burner cap is provided with outer ring burner holes.

[0007] In an optional embodiment, the first gas distribution groove is a face-symmetric structure, and the symmetry plane passes through the center line of the outer ring air inlet and the center line of the first gas distribution groove.

[0008] In an optional embodiment, the area where the depth of the first gas distribution groove changes accounts for at least one-fifth of the entire first gas distribution groove.

[0009] In an optional embodiment, the bottom of the burner base has a protruding structure corresponding to the depth change area of the first gas distribution groove, so that the thickness of the bottom wall of the first gas distribution groove is uniform.

[0010] In an optional embodiment, the inner wall surface of one end of the outer ring air inlet located in the first gas distribution groove has a radial convex ring.

[0011] In an optional embodiment, one end of the outer ring air inlet located in the first gas distribution groove protrudes from the bottom surface of the first gas distribution groove.

[0012] In an optional embodiment, the bottom surface of the depth change area of the first gas distribution groove is an arc surface or an inclined surface.

[0013] In an alternative embodiment, the flame distributor further includes a flow dividing baffle disposed in the outer ring gas distribution channel and opposite to the outer ring air inlet. The flow dividing baffle axially divides the outer ring gas distribution channel into two layers, forming a first cavity and a second cavity respectively. The outer ring air inlet communicates with the first cavity, and the outer ring flame holes communicate with the second cavity. The flow dividing baffle has flow dividing holes that communicate the first cavity and the second cavity.

[0014] In an alternative embodiment, the outer ring flame cover has a second gas distribution groove, and the second gas distribution groove and the first gas distribution groove together form the outer ring gas distribution channel. The flow dividing baffle is disposed in the first gas distribution groove or the second gas distribution groove.

[0015] According to a second aspect of the embodiments of the present invention, there is provided a burner including the flame distributor according to the embodiments of the present invention.

[0016] According to a third aspect of the embodiments of the present invention, there is provided a gas stove including the burner according to the embodiments of the present invention.

[0017] One embodiment of the present invention has the following advantages or beneficial effects:

[0018] The flame distributor of the embodiment of the present invention includes a flame dividing base and an outer ring flame cover. The flame dividing base includes a first gas distribution groove formed by jointly enclosing a bottom wall, an inner ring wall, and an outer ring wall, having an opening at the top. The bottom wall has an outer ring air inlet communicating with the first gas distribution groove, and the depth of the first gas distribution groove gradually decreases in a direction away from the outer ring air inlet. The outer ring flame cover seals the opening of the first gas distribution groove and together with the first gas distribution groove forms an outer ring gas distribution channel. The outer ring flame cover has outer ring flame holes. By providing a gradient structure on the bottom surface of the first gas distribution groove at the outer ring air inlet in the embodiment of the present invention, the depth of the first gas distribution groove at the outer ring air inlet is increased, the space of the outer ring gas distribution channel corresponding to the outer ring air inlet is increased, the resistance of the combustion gas is reduced, the amount of primary air inhaled is increased, the combustion is made sufficient, the flue gas is reduced, and the thermal efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By referring to the accompanying drawings and describing its exemplary embodiments in detail, the above and other features and advantages of the present invention will become more apparent.

[0020] Figure 1 is an exploded structural schematic diagram of a flame distributor shown according to an exemplary embodiment;

[0021] Figure 2 is a cross-sectional structural schematic diagram of a flame distributor shown according to an exemplary embodiment Figure 1 ;

[0022] Figure 3 is a schematic cross-sectional structure of a fire distributor shown according to an exemplary embodiment Figure 2 ;

[0023] Figure 4 is a schematic cross-sectional structure of a fire distributor shown according to an exemplary embodiment Figure 3 ;

[0024] Figure 5 is a schematic structure of a fire seat shown according to an exemplary embodiment Figure 1 ;

[0025] Figure 6 is a schematic expanded cross-section along the A-A direction of the fire seat shown according to an exemplary embodiment and cut along the dashed line Figure 5 ; Figure 1 ;

[0026] Figure 7 is a schematic expanded cross-section of the first gas distribution groove along the A-A direction of the fire seat shown according to another exemplary embodiment and cut along the dashed line Figure 5 ; Figure 2 ;

[0027] Figure 8 is a schematic structure of a fire seat shown according to an exemplary embodiment Figure 2 ;

[0028] Figure 9 is a schematic structure of a fire seat shown according to an exemplary embodiment Figure 3 .

[0029] Among them, the reference numerals are explained as follows: 100 - shunt baffle, 120 - shunt hole, 121 - first shunt hole, 122 - second shunt hole, 200 - fire seat, 210 - first gas distribution groove, 211 - first cavity, 212 - second cavity, 213 - bottom surface, 220 - inner ring gas distribution groove, 230 - outer ring air inlet, 231 - convex ring, 240 - bottom, 260 - protruding structure, 270 - bottom wall (270), 280 - inner ring wall, 290 - outer ring wall, 300 - outer ring fire cap, 310 - outer ring fire hole, 320 - second gas distribution groove, 400 - inner ring fire cap, 500 - outer ring gas distribution channel. Detailed Embodiment

[0030] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this utility model will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed descriptions will be omitted.

[0031] The terms "a", "an", "the", and "" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and refer to the possibility of the existence of additional elements / components / etc. in addition to the listed elements / components / etc.

[0032] See Figures 1 to 9 , an embodiment of the present utility model provides a burner, which includes a burner base 200 and an outer ring burner cap 300. The burner base 200 includes a first gas distribution groove 210 formed by jointly enclosing a bottom wall 270, an inner ring wall 280, and an outer ring wall 290, with an opening at the top. An outer ring air inlet 230 communicating with the first gas distribution groove 210 is provided on the bottom wall 270, and the depth of the first gas distribution groove 210 gradually decreases in a direction away from the outer ring air inlet 230; the outer ring burner cap 300 seals the opening of the first gas distribution groove 210 and jointly forms an outer ring gas distribution channel 500 with the first gas distribution groove 210, and the outer ring burner cap 300 has outer ring flame holes 310.

[0033] In the burner of the embodiment of the present utility model, a gradient structure is provided on the bottom surface 213 of the first gas distribution groove 210 at the outer ring air inlet 230. The bottom surface 213 is not in the same plane, so that the depth of the first gas distribution groove 210 is different. Among them, the bottom surface 213 of the first gas distribution groove 210 gradually rises in a direction away from the outer ring air inlet 230, so that the depth of the first gas distribution groove 210 gradually decreases in a direction away from the outer ring air inlet 230, thereby increasing the depth at the outer ring air inlet 230, increasing the space in the axial direction of the outer ring gas distribution channel 500 corresponding to the outer ring air inlet 230, facilitating the combustion gas to flow to the remaining space of the first gas distribution groove 210, converting the velocity field into a pressure field, reducing the resistance of the combustion gas at the outer ring air inlet 230, increasing the amount of primary air inhaled, making the combustion sufficient, reducing the flue gas, and improving the thermal efficiency.

[0034] In some embodiments, the first gas distribution groove 210 is a face-symmetric structure, and the symmetry plane passes through the center line of the outer ring air inlet 230 and the center line of the first gas distribution groove 210. The first gas distribution groove 210 adopts a face-symmetric structure, so that the combustion gas entering the first gas distribution groove 210 from the outer ring air inlet 230 flows simultaneously in the clockwise and counterclockwise directions to other spaces of the outer ring gas distribution channel 500, which is beneficial to the rapid distribution of the combustion gas to the entire outer ring gas distribution channel 500 and improves the uneven flame situation.

[0035] The depth of the first gas distribution groove 210 at the outer ring air inlet 230 is the largest. The bottom surface 213 of the first gas distribution groove 210 here is at the lowest point of the entire first gas distribution groove 210. The combustion gas entering from the outer ring air inlet 230 climbs along the bottom surface 213 of the first gas distribution groove 210 clockwise and counterclockwise respectively. Since the rising space of the combustion gas at the outer ring air inlet 230 is increased, the resistance of the combustion gas at the outer ring air inlet 230 is reduced, facilitating the flow of the combustion gas to the remaining space of the first gas distribution groove 210, thereby increasing the amount of primary air inhaled, making the combustion more complete, reducing the flue gas, and improving the thermal efficiency.

[0036] In the embodiment of the present utility model, the position of the bottom surface 213 of the first gas distribution groove 210 in the axial direction of the first gas distribution groove 210 can be a gradually changing structure as a whole, so that the bottom surface 213 of the first gas distribution groove 210 gradually rises from the lowest point at the outer ring air inlet 230 clockwise and counterclockwise respectively, and the bottom surface 213 on the other side opposite to the outer ring air inlet 230 reaches the highest point.

[0037] In the embodiment of the present utility model, the position of the bottom surface 213 of the first gas distribution groove 210 in the axial direction of the first gas distribution groove 210 can be partially a gradually changing structure, so that the bottom surface 213 of the first gas distribution groove 210 gradually rises from the lowest point at the outer ring air inlet 230 clockwise and counterclockwise respectively to the highest point, and continues to extend to the other side opposite to the outer ring air inlet 230 while maintaining this height.

[0038] In some embodiments, the area where the depth of the first gas distribution groove 210 changes accounts for at least one-fifth of the entire first gas distribution groove 210. The area where the depth of the first gas distribution groove 210 changes is relatively large, which can make the bottom surface 213 gradually rise with a smaller slope when the depth of the first gas distribution groove 210 at the outer ring air inlet 230 increases significantly, making the flow of the combustion gas along the first gas distribution groove 210 smoother. Specifically, in implementation, the area where the depth of the first gas distribution groove 210 changes can be one-fourth, one-third, two-fifths, one-half, two-thirds, etc. of the entire first gas distribution groove 210.

[0039] In the embodiment of the present utility model, the bottom surface 213 of the area outside the area where the depth of the first gas distribution groove 210 changes is in the same plane.

[0040] In some embodiments, see Figure 6 and Figure 7 , the bottom surface 213 of the depth change area of the first gas distribution groove 210 is an arc surface or an inclined surface. When the bottom surface 213 of the depth change area of the first gas distribution groove 210 is an arc surface, the curvature of the bottom surface 213 of the depth change area of the first gas distribution groove 210 can gradually decrease along the direction away from the outer ring air inlet 230. See Figure 6 , the bottom surface 213 of the depth change area of the first gas distribution groove 210 can be a convex arc surface. SeeFigure 7 In some embodiments, the bottom surface 213 of the depth change region of the first gas distribution groove 210 may also be a concave arc surface. When the bottom surface 213 of the depth change region of the first gas distribution groove 210 is an inclined surface, the slopes of the bottom surface 213 of the depth change region of the first gas distribution groove 210 are the same.

[0041] In some embodiments, the bottom surface 213 of the depth change region of the first gas distribution groove 210 may be higher on the side away from the center line of the first gas distribution groove 210 than on the side close to the center line of the first gas distribution groove 210. The bottom surface 213 of the depth change region of the first gas distribution groove 210 gradually rises radially outward.

[0042] In some embodiments, referring to Figure 1 、 Figure 8 and Figure 9 , the bottom 240 of the distributor base 200 has a protruding structure 260, and the protruding structure 260 corresponds to the depth change region of the first gas distribution groove 210, so that the thickness of the bottom wall 270 of the first gas distribution groove 210 is uniform. The region of the bottom 240 of the distributor base 200 opposite to the depth change region of the first gas distribution groove 210 has a protruding structure 260, so that the axial dimension of the distributor base 200 in the depth change region of the first gas distribution groove 210 is greater than the axial dimensions of other regions, which can enable the distributor base 200 to achieve different depths of the first gas distribution groove 210 with less material.

[0043] In some embodiments, referring to Figures 2 to 7 , one end inner wall surface of the outer ring air inlet 230 located in the first gas distribution groove 210 has a radial convex ring 231. By providing a radial convex ring 231 on the inner wall surface of the outer ring air inlet 230, the rate of the combustion gas can be adjusted, which is beneficial to the uniform distribution of the combustion gas in the first gas distribution groove 210. The convex ring 231 can also prevent fluids such as oil stains from entering the outer ring air inlet 230.

[0044] In some embodiments, referring to Figures 2 to 7 , one end of the outer ring air inlet 230 located in the first gas distribution groove 210 protrudes from the bottom surface 213 of the first gas distribution groove 210. The outer ring air inlet 230 protruding from the bottom surface 213 of the outer ring gas distribution groove 210 can prevent liquids such as oil stains from entering the outer ring air inlet 230.

[0045] In some embodiments, referring to Figures 1 to 3, the gas distributor further includes a flow splitting baffle 100, which is arranged in the outer ring gas distribution channel 500 and opposite to the outer ring air inlet 230. The flow splitting baffle 100 axially divides the outer ring gas distribution channel 500 into two layers, forming a first cavity 211 and a second cavity 212 respectively. The outer ring air inlet 230 is communicated with the first cavity 211, the outer ring flame holes 310 are communicated with the second cavity 212, and the flow splitting baffle 100 is provided with flow splitting holes 120 which communicate the first cavity 211 and the second cavity 212.

[0046] The flow splitting baffle 100 divides the outer ring gas distribution channel 5000 into a first cavity 211 and a second cavity 212. The flow splitting baffle 100 blocks the combustion gas entering from the outer ring air inlet 230, so that the combustion gas flows along the first cavity 211 towards the side away from the outer ring air inlet 230 and flows into the second cavity 212 through the flow splitting holes 120. The combustion gas can be evenly distributed in the second cavity 212. The air flow pressure and velocity inside the first gas distribution groove 210 of the entire gas distributor are uniform, ensuring the uniformity of the flame and improving the phenomenon of uneven flame caused by uneven distribution of the combustion gas. In addition, the flow splitting baffle 100 prevents the combustion gas from directly rushing upwards from the outer ring air inlet 230 to the outer ring flame holes 310, slows down the air flow velocity at the outer ring flame holes 310 opposite to the outer ring air inlet 230, and improves the situation of flame lift caused by too fast air flow at the outer ring flame holes 310 above the vicinity of the outer ring air inlet 230.

[0047] In the embodiment of the present utility model, the depth of the first gas distribution groove 210 at the outer ring air inlet 230 is increased, and the distance from the outer ring air inlet 230 to the flow splitting baffle 100 is increased, thereby increasing the air outlet space of the outer ring air inlet 230. In the case of setting the flow splitting baffle 100 to improve the air flow velocity and uneven distribution, it can also avoid problems such as less primary air inhaled, incomplete combustion, high flue gas, and reduced thermal efficiency caused by the flow splitting baffle 100 increasing the resistance of the combustion gas at the outer ring air inlet 230.

[0048] In some embodiments, refer to Figure 4 , the outer ring fire cap 300 has a second gas distribution groove 320, and the second gas distribution groove 320 and the first gas distribution groove 210 jointly form the outer ring gas distribution channel 500. The flow splitting baffle 100 is arranged in the first gas distribution groove 210 or the second gas distribution groove 320.

[0049] In the embodiment of the present utility model, refer to Figures 1 to 3 , the gas distributor in the embodiment of the present utility model may further have an inner ring gas distribution groove 220, and an inner ring fire cap 400 is arranged on the inner ring gas distribution groove 220. The first gas distribution groove 210 is arranged around the inner ring gas distribution groove 220.

[0050] In some embodiments, the diversion holes 120 are used to change the flow direction of the combustion gas entering the second cavity 212, so that the flow direction of the combustion gas entering the second cavity 212 is not parallel to the center line of the first gas distribution groove 210. The non - parallelism between the flow direction of the combustion gas entering the second cavity 212 and the center line of the first gas distribution groove 210 can adjust the flow velocity at the outer - ring air inlet 230, which is beneficial to the uniform distribution of the combustion gas in the second cavity 212, thereby making the flame uniform.

[0051] See Figure 3 , the diversion holes 120 can be divided into two parts. One part is the first diversion hole 121, and the other part is the second diversion hole 122. The tangential component of the first diversion hole 121 is in the clockwise direction, which is beneficial to the combustion gas flowing away from the outer - ring air inlet 230 in the clockwise direction. The tangential component of the second diversion hole 122 is in the counter - clockwise direction, which is beneficial to the combustion gas flowing away from the outer - ring air inlet 230 in the counter - clockwise direction. After the combustion gas entering from the outer - ring air inlet 230 enters the second cavity 212, a part of it quickly diffuses to the far end in the clockwise direction, and the other part quickly diffuses to the far end in the counter - clockwise direction, which is beneficial to the uniform distribution of the combustion gas in the second cavity 212, thereby making the flame uniform. And it can slow down the speed of the combustion gas vertically entering the second cavity 212, slow down the flow velocity of the combustion gas at the outer - ring flame holes 310 near the outer - ring air inlet 230, and improve the phenomenon of flame detachment.

[0052] The embodiment of the present utility model provides a burner, including the flame divider of the embodiment of the present utility model.

[0053] The embodiment of the present utility model provides a gas stove, including the burner of the embodiment of the present utility model.

[0054] In the embodiment of the present utility model, the term "a plurality of" refers to two or more, unless otherwise clearly defined. Terms such as "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above - mentioned terms in the embodiment of the present utility model can be understood according to specific situations.

[0055] In the description of the embodiment of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiment of the present utility model and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the embodiment of the present utility model.

[0056] In the description of this specification, the descriptions of terms such as "one embodiment" and "one preferred embodiment" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0057] The above are only the preferred embodiments of the embodiments of the present utility model and are not used to limit the embodiments of the present utility model. For those skilled in the art, various changes and modifications can be made to the embodiments of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the embodiments of the present utility model shall be included within the protection scope of the embodiments of the present utility model.

Claims

1. A fire divider, characterized in that, Comprising: A distributor base (200), including a first gas distribution groove (210) with an opening at the top formed by jointly enclosing with a bottom wall (270), an inner ring wall (280), and an outer ring wall (290). An outer ring air inlet (230) communicating with the first gas distribution groove (210) is provided on the bottom wall (270), and the depth of the first gas distribution groove (210) gradually decreases in a direction away from the outer ring air inlet (230); An outer ring burner cap (300), which seals the opening of the first gas distribution groove (210) and jointly forms an outer ring gas distribution channel (500) with the first gas distribution groove (210). The outer ring burner cap (300) has outer ring flame holes (310).

2. The fire divider according to claim 1, characterized in that, The first gas distribution groove (210) is a face-symmetric structure, and the symmetry plane passes through the center line of the outer ring air inlet (230) and the center line of the first gas distribution groove (210).

3. The sub-firearm according to claim 1, characterized in that, The area where the depth of the first gas distribution groove (210) changes accounts for at least one-fifth of the entire first gas distribution groove (210).

4. The fire divider according to claim 1, wherein The bottom (240) of the distributor base (200) has a protruding structure (260), and the protruding structure (260) corresponds to the area where the depth of the first gas distribution groove (210) changes, so that the thickness of the bottom wall (270) of the first gas distribution groove (210) is uniform.

5. The sub-firearm according to claim 1, characterized in that, One end inner wall surface of the outer ring air inlet (230) located in the first gas distribution groove (210) has a radial convex ring (231).

6. The sub-firearm according to claim 1, characterized in that, One end of the outer ring air inlet (230) located in the first gas distribution groove (210) protrudes from the bottom surface (213) of the first gas distribution groove (210).

7. The fire divider according to claim 1, wherein The bottom surface (213) of the area where the depth of the first gas distribution groove (210) changes is an arc surface or an inclined surface.

8. The fire divider according to claim 1, wherein It further includes a flow dividing baffle (100), which is arranged in the outer ring gas distribution channel (500) and is opposite to the outer ring air inlet (230). The flow dividing baffle (100) axially divides the outer ring gas distribution channel (500) into two layers, respectively forming a first cavity (211) and a second cavity (212). The outer ring air inlet (230) communicates with the first cavity (211), the outer ring flame holes (310) communicate with the second cavity (212), and the flow dividing baffle (100) has flow dividing holes (120), and the flow dividing holes (120) communicate the first cavity (211) and the second cavity (212).

9. The sub-firearm according to claim 8, characterized in that, The outer ring burner cap (300) has a second gas distribution groove (320), and the second gas distribution groove (320) and the first gas distribution groove 210 jointly form the outer ring gas distribution channel (500). The flow dividing baffle (100) is arranged in the first gas distribution groove (210) or the second gas distribution groove (320).

10. A burner, characterized in that, It further includes a burner as described in any one of claims 1 - 9.

11. A gas stove, including the burner as described in claim 10.

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