Burner capable of enabling flame to be uniform

Abstract

The utility model discloses a combustor capable of enabling flames to be uniform. The combustor comprises a furnace end, a gas distribution disc arranged on the furnace end and an outer ring fire cover arranged on the gas distribution disc in a covering mode. The furnace end is provided with an outer ring mixing cavity, the gas distribution disc is provided with a plurality of transverse gas distribution channels, the outer ring fire cover and the gas distribution disc are enclosed to form an outer ring fire distribution cavity, one end of each transverse gas distribution channel is communicated with the outer ring mixing cavity, and the other end of each transverse gas distribution channel is communicated with the outer ring fire distribution cavity; the outer ring fire cover comprises an outer wall located on the periphery of the outer ring fire cover and extending downwards, and the lower end of the outer wall abuts against the gas distribution disc. The outer wall comprises a fire hole part and a flow guide part located below the fire hole part, and the fire hole part is provided with a plurality of outer ring fire holes; the outer ring fire cover is made of lead brass and is manufactured by a forging process; the inner side wall of the flow guide part is obliquely arranged outwards relative to the vertical direction, and the inner diameter of the flow guide part is gradually increased in the downward extending direction. Mixed gas blown out of the transverse gas distribution channel can be distributed, and the uniformity of outer ring flames is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stoves, in particular to a burner which can make flames uniform. Background Art

[0002] A gas stove is a very common gas combustion device in daily life. The burner of a current gas stove mainly includes a stove head, a gas distribution plate and a fire cover.

[0003] A Chinese utility model patent with announcement number CN208025511U discloses a gas stove. Since the inner side surface of the outer wall of its outer ring fire cover is parallel to the vertical direction, after the mixed gas blown out from the horizontal gas distribution channel contacts the inner side surface of the outer wall, most of the gas will move upward along the inner side surface of the outer wall, resulting in a higher air pressure and a higher flame in the fire holes at the position corresponding to the horizontal gas distribution channel, while the air pressure and the flame of the fire holes at other positions are relatively low, and the flame is relatively small, resulting in uneven flames on the entire outer ring fire cover.

[0004] Chinese utility model patent with announcement number CN211739075U discloses a gas burner for a gas furnace. Although the outer wall of the fire cover is inclined, the fire hole is arranged on the inner wall of the fire cover, which is far away from the outer wall, and the outer wall of the fire cover does not play a diversion effect.

[0005] The Chinese utility model patent with announcement number CN219102988U discloses a stove head and a gas stove. Although the outer wall of its fire cover is also inclined, its air inlet is located at the bottom of the gas distribution plate and there is only one air inlet, resulting in a larger flame near the air inlet and a smaller flame away from the air inlet.

[0006] Therefore, the existing burner has no corresponding diversion measures after the mixed gas of fuel gas and air enters the outer ring fire distribution cavity, resulting in uneven distribution of gas pressure in the outer ring fire distribution cavity and uneven outer ring flame. Utility Model Content

[0007] The utility model provides a burner capable of making flames uniform, which can split the mixed gas blown out from a transverse gas distribution channel and improve the uniformity of the outer ring flame.

[0008] In order to solve the above problems, the utility model adopts the following technical solutions:

[0009] An embodiment of the utility model provides a burner that can make flame uniform, comprising a burner head, an air distribution plate arranged on the burner head, and an outer ring fire cover arranged on the air distribution plate; the burner head is provided with an outer ring mixing chamber, the air distribution plate is provided with a plurality of transverse air distribution channels, the outer ring fire cover and the air distribution plate are enclosed to form an outer ring fire distribution chamber, one end of the transverse air distribution channel is connected with the outer ring mixing chamber, and the other end is connected with the outer ring fire distribution chamber; the outer ring fire cover comprises an outer wall located at its periphery and extending downward, the lower end of the outer wall abuts the air distribution plate; the outer wall comprises a fire hole portion and a guide portion located below the fire hole portion, the fire hole portion is provided with a plurality of outer ring fire holes penetrating the outer wall; the outer ring fire cover is made of lead brass and is manufactured by a forging process; the inner side wall of the guide portion is inclined outward relative to the vertical direction, and in the downward extending direction, the inner diameter of the guide portion gradually increases.

[0010] In some embodiments, the inner side of the fire hole portion extends inwardly to form a boss protruding from the guide portion.

[0011] In some embodiments, the outer side wall of the fire hole portion is parallel to or inclined with respect to the vertical direction, and the inner side wall of the boss is parallel to or inclined with respect to the vertical direction.

[0012] In some embodiments, an outer ring groove is provided on the outer side surface of the fire hole portion, and the outer ring groove is located below the outer ring fire hole; and a plurality of fire stabilizing holes connected to the outer ring groove are provided on the bottom surface of the boss.

[0013] In some embodiments, the outer side wall of the guide portion is a straight surface, an outwardly convex curved surface, or an inwardly concave curved surface, and the inner side wall of the guide portion is a straight surface, an outwardly convex curved surface, or an inwardly concave curved surface.

[0014] In some embodiments, the outer ring fire cover is assembled with the gas distribution plate without fasteners.

[0015] In some embodiments, the outer ring fire cover and the gas distribution plate are combined using fasteners, the outer ring fire cover is provided with a boss with an internal threaded hole, and the gas distribution plate is provided with a screw mounting hole.

[0016] The utility model has at least the following beneficial effects: the outer wall of the outer ring fire cover of the utility model includes a fire hole portion and a guide portion located below the fire hole portion, the fire hole portion is provided with a plurality of outer ring fire holes penetrating the outer ring fire cover; the inner side wall of the guide portion is inclined outward relative to the vertical direction, and the inner diameter of the guide portion gradually increases in the downward extending direction; when the mixed gas is blown out from the horizontal gas distribution channel, due to the oblique flow guide structure of the guide portion, most of the gas will move downward along the guide portion and then be diverted to both sides, which reduces the gas flow directly flowing to the outer ring fire holes corresponding to the horizontal gas distribution channel, so that the gas pressure distribution in the outer ring fire distribution cavity is relatively uniform, thereby improving the uniformity of the outer ring flame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a burner capable of making flame uniform according to an embodiment of the utility model;

[0018] Figure 2 This is an exploded schematic diagram of a burner capable of making flames uniform according to an embodiment of the utility model;

[0019] Figure 3 It is a partial cross-sectional schematic diagram of a fire cover and a gas distribution plate of an embodiment of the utility model;

[0020] Figure 4 This is a schematic structural diagram of a burner capable of making flames uniform in another embodiment of the utility model;

[0021] Figure 5 This is an exploded schematic diagram of a burner capable of making flames uniform according to another embodiment of the utility model;

[0022] Figure 6 It is a partial cross-sectional schematic diagram of a fire cover and an air distribution plate according to another embodiment of the utility model.

[0023] Wherein, the accompanying drawings are marked as follows:

[0024] Burner head 100, outer ring mixing chamber 110, inner ring mixing chamber 120;

[0025] Gas distribution plate 200, transverse gas distribution channel 210;

[0026] Outer ring fire cover 300, outer ring fire dividing cavity 301, outer ring fire hole 302, outer ring groove 303, fire stabilizing hole 304, outer wall 310, fire hole part 311, flow guide part 312, boss 313;

[0027] Inner ring fire cover 400. DETAILED DESCRIPTION

[0028] The utility model provides the following description with reference to the accompanying drawings to help fully understand the various embodiments of the utility model as defined by the claims and their equivalents. The description includes various specific details to help understanding, but these details should be regarded as exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the utility model.

[0029] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] It will be understood that when one element (eg, a first element) is “connected” to another element (eg, a second element), the element may be directly connected to the other element or an intervening element (eg, a third element) may be present between the element and the other element.

[0031] The embodiment of the utility model provides a burner that can make the flame uniform. Figure 1-3 As shown, it includes a burner head 100, a gas distribution plate 200 arranged on the burner head 100, and an outer ring fire cover 300 covering the gas distribution plate 200. The upper end of the burner head 100 can be plugged into the gas distribution plate 200, and the outer ring fire cover 300 can cover the gas distribution plate 200 and be fixedly connected to the gas distribution plate 200. The burner head 100 is provided with an outer ring mixing chamber 110, and gas and air can be mixed in the outer ring mixing chamber 110. The gas distribution plate 200 is provided with a plurality of transverse gas distribution channels 210 extending transversely. The outer ring fire cover 300 and the gas distribution plate 200 are enclosed to form an outer ring fire distribution chamber 301. One end of the transverse gas distribution channel 210 is connected to the outer ring mixing chamber 110, and the other end of the transverse gas distribution channel 210 is connected to the outer ring fire distribution chamber 301. The outer ring fire cover 300 includes an outer wall 310 located at its periphery and extending downward, the lower end of the outer wall 310 abuts against the gas distribution plate 200, and the inner side wall of the outer wall 310 constitutes a part of the inner wall of the outer ring fire distribution chamber 301. The outer wall 310 includes a fire hole portion 311 and a guide portion 312 located below the fire hole portion 311, and the fire hole portion 311 is provided with a plurality of outer ring fire holes 302 that penetrate the outer wall 310. The outer ring fire cover 300 is made of lead brass and manufactured by a forging process. It is not a thin fire cover formed by stretching, and is significantly different from the existing fire cover. The inner side wall of the guide portion 312 is inclined relative to the vertical direction, and the inner diameter of the guide portion 312 gradually increases in the direction of downward extension. The mixed gas in the outer ring mixing chamber 110 is blown to the outer ring fire distribution chamber 301 through the horizontal gas distribution channel 210, and then ejected from the outer ring fire hole 302. After the mixed gas is ignited, an outer ring flame is formed.

[0032] Since the guide portion 312 of the present embodiment adopts an oblique guide structure design, when the mixed gas is blown out from the horizontal gas distribution channel 210, most of the gas will move downward along the guide portion 312, and after contacting the bottom wall of the outer ring fire distribution cavity 301, it will be diverted to both sides. This reduces the gas flow directly flowing to the outer ring fire hole 304 corresponding to the horizontal gas distribution channel 210, so that the air pressure distribution in the outer ring fire distribution cavity 301 is relatively uniform, and the air pressure of the outer ring fire holes 302 at various locations on the outer ring fire cover 300 is also relatively uniform, thereby improving the uniformity of the outer ring flame to evenly heat the cookware.

[0033] In this embodiment, the transverse gas distribution channel 210 can be evenly distributed relative to the center of the gas distribution plate 200, so that the mixed gas in the outer ring mixing chamber 110 can pass through the transverse gas distribution channel 210 evenly, so as to further make the gas pressure distribution in the outer ring flame distribution chamber 301 relatively uniform, and further improve the uniformity of the outer ring flame.

[0034] In some embodiments, the inner side surface of the fire hole portion 311 extends and protrudes inward to form a boss 313 protruding from the guide portion 312. Therefore, the boss 313 can be located above the guide portion 312. At the same time, the boss 313 protrudes from the guide portion 312, that is, the boss 313 is not located on the same plane as the guide portion 312, but also protrudes from the surface where the guide portion 312 is located. When the mixed gas is blown out from the transverse gas distribution channel 210, a small amount of the mixed gas will move upward along the guide portion 312. This part of the gas will be blocked by the boss 313, so that the gas moving upward does not flow directly to the outer ring fire hole 304 at the position corresponding to the transverse gas distribution channel 210, but diffuses laterally along the bottom surface of the boss 313, so as to further make the gas pressure distribution in the outer ring fire distribution cavity 301 relatively uniform, and further improve the uniformity of the outer ring flame.

[0035] The bottom surface of the boss 313 may be parallel to the horizontal plane, and a small portion of the mixed gas moving upward along the guide portion 312 will diffuse horizontally on the bottom surface of the boss 313, which has a better effect on guiding and diffusing this portion of the gas.

[0036] Furthermore, an outer ring groove 303 is provided on the outer wall of the fire hole portion 311, and the outer ring groove 303 is located below the outer ring fire hole 302. The bottom surface of the boss 313 is provided with a plurality of flame stabilizing holes 304 connected to the outer ring groove 303. A small amount of mixed gas will enter the outer ring groove 303 through the flame stabilizing holes 304. After being ignited, this part of the mixed gas can form a stable flame, so that the flame ejected upward from the outer ring groove 303 can directly burn at the root of the outer ring fire hole 304, thereby improving the stability of the flame and effectively avoiding the occurrence of the flashback phenomenon. At the same time, the flame ejected from the outer ring groove 303 and the flame ejected from the outer ring fire hole 304 are combined into one, which can improve the thermal efficiency of combustion.

[0037] In some embodiments, the outer wall of the fire hole portion 311 is inclined with respect to the vertical direction, and the outer diameter of the fire hole portion 311 gradually increases in the direction extending downward. The inner wall of the boss 313 is inclined with respect to the vertical direction, and the inner diameter of the boss 313 gradually increases in the direction extending downward. Since the opening inside the outer ring fire hole 302 is on the inner wall of the boss 313, the outer ring fire hole 302 on the inner wall of the boss 313 is inclined, so that the mixed gas in the outer ring fire chamber 301 can pass through the outer ring fire hole 302 more easily.

[0038] Among them, the outer wall of the fire hole portion 311 can be arranged parallel to the outer wall of the guide portion 312, and the inner wall and outer wall of the guide portion 312 can be arranged parallel to each other, thereby, the wall thickness of the guide portion 312 is unchanged, and the wall thickness at the fire hole portion 311 can be greater than the wall thickness at the guide portion 312, so as to form the boss 313 of the above embodiment on the inner side of the fire hole portion 311.

[0039] In some embodiments, the outer side wall of the guide portion 312 includes but is not limited to a straight surface, an outwardly convex curved surface, and an inwardly concave curved surface, and the inner side wall of the guide portion 312 includes but is not limited to a straight surface, an outwardly convex curved surface, and an inwardly concave curved surface.

[0040] In some embodiments, the outer ring fire cover 300 and the gas distribution plate 200 are covered without fasteners, that is, the outer ring fire cover 300 can be directly covered on the gas distribution plate 200 without fasteners to fix the two together, which can facilitate assembly and disassembly.

[0041] In some embodiments, the outer ring fire cover 300 and the gas distribution plate 200 are combined with fasteners to fasten the outer ring fire cover 300 to the gas distribution plate 200 to prevent the outer ring fire cover 300 from shifting at will. The outer ring fire cover 300 is provided with a boss with an internal threaded hole, and the gas distribution plate 200 is provided with a screw mounting hole. The fastener can be a screw, which can pass through the screw mounting hole and be fixed in the internal threaded hole on the boss to fix the outer ring fire cover 300 and the gas distribution plate 200 together.

[0042] In some embodiments, the burner of this embodiment further comprises an inner ring fire cover 400, and an inner ring fire hole is provided on the inner ring fire cover 400. An inner ring mixing chamber 120 is provided on the burner head 100, and the inner ring fire cover 400 and the gas distribution plate 200 enclose an inner ring fire distribution chamber, and the inner ring fire distribution chamber is connected with the inner ring mixing chamber 120. After the mixed gas in the inner ring mixing chamber 120 enters the inner ring fire distribution chamber, it is ejected from the inner ring fire hole, and these mixed gases are ignited to form an inner ring flame, so that the burner of this embodiment has two ring flames.

[0043] The utility model also provides another embodiment of a burner that can make the flame uniform, such as Figure 4-6 As shown, compared with any of the above embodiments, the inclination angle of the inner wall of the boss 313 of this embodiment relative to the vertical direction is smaller than the inclination angle of the inner wall of the guide portion 312 relative to the vertical direction, and the outer wall of the fire hole portion 311 is arranged parallel to the vertical direction.

[0044] In some embodiments, the bottom wall of the outer ring fire-dividing chamber 301 may be located on the same plane as the bottom wall of the transverse gas-dividing channel 210 , which can prevent the mixed gas from being easily deposited on the bottom wall of the outer ring fire-dividing chamber 301 .

[0045] In other embodiments, the inner side wall of the boss 313 may be arranged parallel to the vertical direction.

[0046] The terms and words used in the above description and claims are not limited to the literal meanings, but are only used by the applicant to enable a clear and consistent understanding of the utility model. Therefore, it should be clear to those skilled in the art that the above description of various embodiments of the utility model is provided only for illustration, and not for limiting the utility model as defined by the attached claims and their equivalents.

Claims

1. A burner capable of making flames uniform, comprising a burner head, a gas distribution plate arranged on the burner head, and an outer ring fire cover arranged on the gas distribution plate; the burner head is provided with an outer ring mixing chamber, the gas distribution plate is provided with a plurality of transverse gas distribution channels, the outer ring fire cover and the gas distribution plate are enclosed to form an outer ring fire distribution chamber, one end of the transverse gas distribution channel is communicated with the outer ring mixing chamber, and the other end is communicated with the outer ring fire distribution chamber; the outer ring fire cover comprises an outer wall located at its periphery and extending downward, the lower end of the outer wall abuts the gas distribution plate; the outer wall comprises a fire hole portion and a guide portion located below the fire hole portion, the fire hole portion is provided with a plurality of outer ring fire holes penetrating the outer wall; the outer ring fire cover is made of lead brass and is manufactured by a forging process; it is characterized in that: The inner side wall of the guide portion is inclined outward relative to the vertical direction, and the inner diameter of the guide portion gradually increases in the downward extending direction.

2. The burner capable of making flame uniform according to claim 1, characterized in that: The inner side of the fire hole portion extends inwardly to form a boss protruding from the guide portion.

3. The burner capable of making flame uniform according to claim 2, characterized in that: The outer side wall of the fire hole portion is parallel to or inclined with respect to the vertical direction, and the inner side wall of the boss is parallel to or inclined with respect to the vertical direction.

4. The burner capable of making flame uniform according to claim 2, characterized in that: An outer ring groove is arranged on the outer side surface of the fire hole portion, and the outer ring groove is located below the outer ring fire hole; a plurality of fire stabilizing holes connected with the outer ring groove are arranged on the bottom surface of the boss.

5. The burner capable of making flame uniform according to any one of claims 1 to 4, characterized in that: The outer side wall of the guide portion is a straight surface, an outwardly convex curved surface or an inwardly concave curved surface, and the inner side wall of the guide portion is a straight surface, an outwardly convex curved surface or an inwardly concave curved surface.

6. The burner capable of making flame uniform according to any one of claims 1 to 4, characterized in that: The outer ring fire cover and the gas distribution plate are closed without fasteners.

7. The burner capable of making flame uniform according to any one of claims 1 to 4, characterized in that: The outer ring fire cover and the gas distribution plate are combined by fasteners. The outer ring fire cover is provided with a boss with an internal threaded hole, and the gas distribution plate is provided with a screw mounting hole.

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