CN213810621U - Outer ring fire cover, combustor and gas cooking utensils - Google Patents
Outer ring fire cover, combustor and gas cooking utensils Download PDFInfo
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- CN213810621U CN213810621U CN202022635438.0U CN202022635438U CN213810621U CN 213810621 U CN213810621 U CN 213810621U CN 202022635438 U CN202022635438 U CN 202022635438U CN 213810621 U CN213810621 U CN 213810621U
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Abstract
The utility model discloses an outer loop fire lid, combustor and gas cooking utensils, wherein, outer loop fire lid includes: the outer ring fire cover main body is provided with a gas storage cavity; the middle ring fire holes are annularly arranged on the outer ring fire cover main body and are communicated with the gas storage cavity; the outer ring fire holes are annularly arranged on the outer ring fire cover main body and positioned on the outer sides of the middle ring fire holes on the outer ring fire cover main body, and the outer ring fire holes are communicated with the gas storage cavity; the ratio of the total fire hole area of the outer ring fire holes to the total fire hole area of the middle ring fire holes is not less than 1.2. The utility model discloses a ratio that makes total fire hole area in a plurality of outer loop fire holes and total fire hole area in a plurality of zhonghuan fire holes is not less than 1.2, makes a plurality of zhonghuan fire holes shunt to the gas that a plurality of outer loop fire holes sprayed to promote the stability of the outer ring fire that outer loop fire hole formed and the well ring fire in zhonghuan fire hole.
Description
Technical Field
The utility model relates to a kitchen appliance field, in particular to outer loop fire lid, combustor and gas cooking utensils.
Background
Gas cookers have been widely used by people for cooking and heating. The combustor includes gas distribution plate and fire lid, and the gas is shunted the back by gas distribution plate, gets into the fire lid and sprays and go out through the fire hole, and the gas of outside injection is lighted and is formed flame, heats food to realize multiple culinary art mode. Because the fire holes are distributed unreasonably, the existing burner has the disadvantages of uneven fire distribution and unstable flame, which easily causes great fluctuation of the temperature in the pot and reduces the cooking quality.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing an outer loop fire lid, combustor and gas cooking utensils, aim at improving the unstable problem of current combustor flame.
In order to achieve the above object, the utility model provides an outer loop fire lid for the combustor, outer loop fire lid includes:
the outer ring fire cover main body is provided with a gas storage cavity;
the middle ring fire holes are annularly arranged on the outer ring fire cover main body and are communicated with the gas storage cavity; and
the outer ring fire holes are annularly arranged on the outer ring fire cover main body and positioned on the outer sides of the middle ring fire holes on the outer ring fire cover main body, and the outer ring fire holes are communicated with the gas storage cavity;
the ratio of the total fire hole area of the outer ring fire holes to the total fire hole area of the middle ring fire holes is not less than 1.2.
Optionally, a temperature detector is arranged on the inner side of the outer ring fire cover main body, and the ratio of the total fire hole area of the plurality of outer ring fire holes to the total fire hole area of the plurality of middle ring fire holes is not less than 2.
Optionally, the diameter of the middle fire hole is not more than 1.6 mm.
Optionally, the plurality of middle fire holes comprise a first fire hole area and a second fire hole area, and the first fire hole area and the second fire hole area respectively comprise a plurality of fire holes communicated with the gas storage cavity;
the first fire hole area and the second fire hole area are arranged in a staggered mode along the circumferential direction of the outer ring fire cover, and the number of the fire holes of the first fire hole area is larger than that of the fire holes of the second fire hole area.
Optionally, first fire hole district includes main fire hole and locates the steady flame fire hole of main fire hole side, the diameter in main fire hole is greater than the diameter in steady flame fire hole.
Optionally, the number of flame holding holes is at least 2.
Optionally, the flame holding holes have a diameter of no more than 1.4 mm.
Optionally, the diameter of the fire hole of the second fire hole area is smaller than the diameter of the main fire hole.
Optionally, the outer ring fire lid body comprises:
an inner annular wall;
the outer ring wall is annularly arranged on the outer side of the inner ring wall, and the plurality of outer ring fire holes are formed in the outer ring wall; and
the top wall is respectively connected with the inner annular wall and the outer annular wall, the inner annular wall, the top wall and the outer annular wall are enclosed to form the gas storage cavity, and the middle ring fire holes are formed in the top wall.
Optionally, a plurality of flow guide grooves for guiding the air flow to the direction of the middle fire hole are concavely formed in the surface of one side, back to the air storage cavity, of the inner annular wall, and the plurality of flow guide grooves are arranged at intervals along the circumferential direction of the inner annular wall.
Optionally, one end of the diversion trench close to the middle fire hole is located between the first fire hole area and the second fire hole area.
Optionally, a guide wall is arranged between the top wall and the inner annular wall, a guide inclined plane is formed on a side surface of the guide wall, which faces away from the gas storage cavity, the guide inclined plane extends from the axis of the outer annular fire cover to the inner side edge of the top wall in an inclined manner, and one end, away from the gas storage cavity, of the middle annular fire hole is arranged on the guide inclined plane.
Optionally, in a projection of a cross section parallel to the axial direction of the outer ring fire cover, an included angle between the guide inclined plane and a horizontal plane is not greater than 40 ° and not less than 20 °.
The utility model also provides a combustor, include:
the gas distribution plate is provided with an outer ring cavity and an inner ring cavity;
the inner ring fire cover is arranged on the gas distribution plate, and an inner ring fire hole communicated with the inner ring cavity is formed in the inner ring fire cover; and
the outer ring fire cover is characterized in that the outer ring fire cover body of the outer ring fire cover is arranged on the gas distribution plate and is annularly arranged on the outer side of the inner ring fire cover, and the outer ring cavity is communicated with the gas storage cavity.
Optionally, a central cavity is formed between the outer ring fire cover main body and the inner ring fire cover, and a secondary air channel communicated with the central cavity is formed on the air distribution plate.
Optionally, a protrusion is arranged on the air distribution disc, and protrudes into the secondary air channel to guide the secondary air in the secondary air channel to the direction of the plurality of middle ring fire holes of the outer ring fire cover.
The utility model also provides a gas cooking utensils, gas cooking utensils include as aforesaid the combustor.
The utility model discloses technical scheme cooperatees through adopting a plurality of zhonghuan fire holes and a plurality of outer loop fire holes, makes the ratio of total fire hole area in a plurality of outer loop fire holes and the total fire hole area in a plurality of zhonghuan fire holes not less than 1.2, makes a plurality of zhonghuan fire holes shunt to the gas that a plurality of outer loop fire holes sprayed to promote the stability of the outer ring fire that outer loop fire hole formed and the zhonghuan fire in zhonghuan fire hole, and then makes the outer loop fire lid can be predetermined even combustion state.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of the outer ring fire cover of the present invention;
FIG. 2 is a schematic structural view of an embodiment of the gas storage chamber side of the outer ring fire cover of the present invention;
FIG. 3 is a schematic structural view of an embodiment of the outer ring fire cover of the present invention in an operating state;
FIG. 4 is a schematic structural view of an embodiment of an air inlet side of the outer ring fire cover of the present invention in a use state;
FIG. 5 is a schematic structural view of an embodiment of an inner structure of the outer ring fire cover of the present invention in a use state;
fig. 6 is a schematic structural view of an embodiment of the outer ring fire cover and the gas distribution plate of the present invention in a disassembled state.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
11 | |
| 12 | |
13 | |
| 14 | |
20 | Outer ring fire cover |
| 21 | |
211 | |
| 22 | |
23 | |
| 231 | Middle |
232 | First |
| 232a | |
232b | Flame stabilizing |
| 233 | Second |
24 | Outer |
| 25 | Outer |
26 | |
| 27 | External |
30 | Central cavity |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an outer loop fire lid for the combustor, outer loop fire lid is used for spraying and forms outer loop flame and zhonghuan flame. The outer loop flame with the zhonghuan flame all is used for heating the pan. The combustor can also comprise an inner ring fire cover, and the outer ring fire cover is annularly arranged on the outer side of the inner ring fire cover to form inner ring flame, and is matched with the outer ring fire cover to form a three-ring fire state.
Referring to fig. 1 and 2, in an embodiment, the outer fire cover includes: the outer ring fire cover main body 20 is provided with a gas storage cavity; a plurality of middle ring fire holes 231, the middle ring fire holes 231 are annularly arranged on the outer ring fire cover main body 20, and the middle ring fire holes 231 are communicated with the gas storage cavity; the outer ring fire holes 25 are annularly arranged on the outer ring fire cover main body 20, the outer ring fire holes 25 are positioned on the outer side of the middle ring fire holes 231 on the outer ring fire cover main body 20, and the outer ring fire holes 25 are communicated with the gas storage cavity; the ratio of the total fire hole area of the outer ring fire holes 25 to the total fire hole area of the middle ring fire holes 231 is not less than 1.2.
The outer ring fire cover main body 20 can be annular as a whole, a plurality of outer ring fire holes 25 are distributed at intervals along the circumferential direction of the outer ring fire cover main body 20, and gas in the gas storage cavity is sprayed through the outer ring fire holes 25 to form outer ring flame; the plurality of middle ring fire holes 231 are distributed at intervals along the circumferential direction of the outer ring fire cover main body 20, and the gas of the gas storage cavity is sprayed through the plurality of middle ring fire holes 231 to form middle ring flames.
The ratio of the total fire hole area of the outer ring fire holes 25 to the total fire hole area of the middle ring fire holes 231 is not less than 1.2, so that the gas in the gas storage cavity is dispersed and output through the outer ring fire holes 25 and the middle ring fire holes 231. In this embodiment, the ratio of the total fire hole area of the outer ring fire holes to the total fire hole area of the middle ring fire holes may be 1.2, or 1.5, or 1.7, or 1.8, or 2, and may be set according to the specific structure of the burner where the outer ring fire cover is located. The middle ring fire hole 231 can share the gas load of the outer ring fire hole 25, so that the flame of the outer ring fire hole 25 is more stable.
In order to improve the stability of the flame formed by spraying the outer ring fire holes 25, outer flame stabilizing holes 27 for stabilizing the flame of the outer ring fire holes 25 may be formed in the outer ring fire cover main body 20, and the outer ring fire holes 25 are stabilized by forming an air flow through the outer flame stabilizing holes 27. When setting up outer flame stabilization hole 27, can the side of outer loop fire hole 25 sets up flame stabilization groove 26, keeps away from outer flame stabilization hole 27 the one end intercommunication flame stabilization groove 26 of gas storage chamber, so that the air current that outer flame stabilization hole 27 formed plays better flame stabilization effect to outer loop fire hole 25. The flame stabilizing groove 26 may be opened to communicate with the outer ring fire hole 25 to divide the airflow of the outer ring fire hole 25, so as to reduce the airflow pressure of the outer ring fire hole 25, and further improve the stability of the outer ring flame formed by the outer ring fire hole 25.
The middle fire hole 231 may be disposed toward an axial direction of the outer fire cover, so that flames formed by the middle fire hole 231 may be directed toward a bottom surface of the pot. Since the ratio of the total fire hole area of the outer ring fire holes 25 to the total fire hole area of the middle ring fire holes 231 is not less than 1.2, the amount of the air flow output from the outer ring fire holes 25 is greater than the amount of the air flow output from the middle ring fire holes 231, so that the outer ring fire holes 25 can form outer ring flames with preset intensity. The middle fire hole 231 and the outer fire hole 25 can share gas load with each other, so that flames formed by the outer fire hole 25 and the middle fire hole 231 are more stable. When the ratio of the total fire hole area of the outer ring fire hole 25 to the total fire hole area of the middle ring fire hole 231 is less than 1.2, the outer ring flame formed by the outer ring fire hole 25 and the middle ring flame intensity formed by the middle ring fire hole are relatively close to each other, so that the temperature of the position of the bottom surface of the pot close to the center is easily too high, and the pot bottom is easily burnt. When the inner ring fire cover is matched, the middle ring flame formed by the middle ring fire hole 231 can be matched with the inner ring flame, a stable heating surface is formed on the bottom surface of the cooker, and the uniformity of heating is further improved.
Referring to fig. 3, fig. 4 and fig. 5, in the present embodiment, the outer ring fire lid main body 20 optionally includes: an inner annular wall 21; an outer annular wall 24 disposed around the outer side of the inner annular wall 21, wherein a plurality of outer annular fire holes 25 are formed in the outer annular wall 24; and a top wall 22 connected to the inner annular wall 21 and the outer annular wall 24, respectively, wherein the inner annular wall 21, the top wall 22 and the outer annular wall 24 enclose the gas storage cavity, and the plurality of middle fire holes 231 are formed in the top wall 22.
The outer annular wall 24, the top wall 22 and the inner annular wall 21 may be integrally formed to reduce machining gaps in the outer fire lid body 20. The top wall 22 faces the bottom surface of the pot, and the middle fire hole 231 is provided on the top wall 22 toward the bottom surface of the pot.
Further optionally, a guide wall 23 is disposed between the top wall 22 and the inner annular wall 21, a guide inclined plane is formed on a side surface of the guide wall 23 facing away from the gas storage cavity, the guide inclined plane extends from the axis of the outer ring fire cover to the inner edge of the top wall 22 in an inclined manner, and one end of the middle ring fire hole 231 away from the gas storage cavity is disposed on the guide inclined plane. The guide wall 23 may be provided integrally with the top wall 22. The middle fire hole 231 forms an inclined fire hole toward the axial direction of the outer ring fire cover main body 20 on the guide wall 23.
The guide slope makes the outer ring fire cover main body 20 form an overall open-shaped structure, and when the burner is in operation, the guide slope may be used to make the secondary air introduced into the burner flow toward the middle ring fire hole 231, so as to improve the stability of middle ring flame and the sufficiency of combustion, to reduce the generation of harmful gas, and to improve the uniformity of heating of the burner.
In order to improve the sufficiency of the middle ring flame combustion, in this embodiment, optionally, a plurality of flow guide grooves 211 for guiding the airflow toward the middle ring flame holes 231 are concavely provided on a side surface of the inner annular wall 21 facing away from the air storage cavity, and the plurality of flow guide grooves 211 are circumferentially spaced along the inner annular wall 21. The guide grooves 211 are formed in a tooth-shaped structure on the inner annular wall 21, and the secondary air introduced into the burner can be guided toward the middle fire hole 231 through the guide grooves 211.
When the guide wall 23 is provided between the top wall 22 and the inner annular wall 21, the guide grooves 211 guide the secondary air toward the guide wall 23. Due to the arrangement of the guide wall 23, the vortex generated when the air flow flows from the inner ring wall 21 to the middle ring fire hole 231 is relatively reduced, so that the amount of the secondary air delivered to the middle ring fire hole 231 is larger, and the sufficiency of the middle ring flame combustion is further improved. When the air flow flows from the flow guide groove 211 to the middle ring fire holes 231, the air flow can be dispersedly guided to the plurality of middle ring fire holes 231, so that the stability of the flame of the middle ring fire holes 231 is higher, the combustion uniformity of the formed middle ring flame is better, and the bottom surface of the pot can be heated more uniformly. Optionally, the flow guide grooves 211 guide the air flow to between the adjacent middle fire holes 231, so that the secondary air can supplement the flame formed by the middle fire holes 231, and at the same time, the air flow formed by the middle fire holes 231 is not directly collided.
Optionally, in a projection of a cross section parallel to the axial direction of the outer ring fire cover, an included angle between the guide inclined plane and a horizontal plane is not greater than 40 ° and not less than 20 °. When the angle between the guide slope and the horizontal plane is greater than 40 °, the angle of the guide slope is too large, which is inconvenient for molding the middle ring fire hole 231, and when secondary air is guided to the middle ring fire hole 231, the air outlet of the middle ring fire hole 231 is easily collided, which causes the air flow sprayed from the middle ring fire hole 231 to be affected, and may also cause the direction of the flame formed by the middle ring fire hole 231 to be changed, which affects the heating range of the burner. When the included angle between the guide inclined plane and the horizontal plane is smaller than 20 degrees, the guide inclined plane is close to the horizontal plane, the formed middle ring flame is far away from the axis direction of the outer ring fire cover main body 20, so that the flame formed by the middle ring fire hole 231 is closer to the outer ring flame formed by the outer ring fire hole 25, the outer ring flame temperature of the burner is easily overhigh, and the heating uniformity is influenced.
In an embodiment, a temperature detector is disposed inside the outer ring fire cover main body 20, and a ratio of a total fire hole area of the outer ring fire holes 25 to a total fire hole area of the middle ring fire holes 231 is not less than 2. When the temperature detector is arranged, the middle ring flame formed by the middle ring flame hole 231 is easy to interfere with the temperature detector, and the normal operation of the temperature detector is influenced. By making the ratio of the total fire hole area of the outer ring fire holes 25 of the middle ring fire holes 231 to the total fire hole area of the middle ring fire holes 231 not less than 2, the total fire hole area of the outer ring fire holes 25 is much larger than that of the middle ring fire holes 231, and the intensity of the outer ring flame formed by the outer ring fire holes 25 is much larger than that of the middle ring flame formed by the middle ring fire holes 231. Optionally, in this embodiment, the diameter of the middle ring fire hole 231 is not greater than 1.6mm, so that the influence of the middle ring flame formed by the middle ring fire hole 231 on the temperature detector is further reduced, and the temperature detector can work effectively for a long time.
The outer ring fire holes 25 can greatly share the gas load of the middle ring fire holes 231, and the influence of middle ring flame formed by the middle ring fire holes 231 on the temperature detector is relatively reduced by reducing the gas load of the middle ring fire holes 231, so that the interference of the middle ring flame on the temperature detector is avoided.
In this embodiment, an included angle between the guiding inclined plane of the guiding wall 23 and the horizontal plane is not greater than 40 ° and not less than 20 °, and when the middle ring fire hole 231 is axially disposed toward the outer ring fire cover main body 20, an influence of a middle ring flame formed by the middle ring fire hole 231 on the temperature detector is relatively reduced. When the secondary air is guided to the middle fire hole 231 from the guiding slope, the air flow wake vortex formed at the connection position of the middle fire hole 231 and the inner ring wall 21 by the secondary air can affect the air flow formed by the middle fire hole 231, so that the secondary air can be sufficiently mixed with the air flow formed by the middle fire hole 231. When the middle ring flame hole 231 forms the middle ring flame, the length of the flame generated by the middle ring flame hole is relatively reduced, and the influence of the flame on the temperature detector is further reduced.
When the inner annular wall 21 of the outer ring fire cover main body 20 is provided with the guide groove 211, and the guide groove 211 guides the secondary air to the middle ring fire hole 231, the secondary air can be more fully mixed with the air flow formed by the middle ring fire hole 231 by matching with the arrangement of the guide inclined plane, so that the air flow formed by the middle ring fire hole 231 is rapidly combusted, the direct impact of the middle ring flame on the temperature detector is reduced, and the interference of the middle ring flame on the temperature detector is further reduced.
Because the ratio of the total fire hole area of the outer ring fire holes 25 to the total fire hole area of the middle ring fire holes 231 is greater than or equal to 2, the middle ring flame formed by the middle ring fire holes 231 is relatively smaller, the outer ring fire holes 25 can have the effect of stabilizing the flame of the middle ring fire holes 231, the stability of the middle ring flame formed by the middle ring fire holes 231 is higher, and the influence on the temperature detector during combustion is further reduced.
Referring to fig. 1, in an embodiment, the plurality of middle fire holes 231 includes a first fire hole area 232 and a second fire hole area 233, and the first fire hole area 232 and the second fire hole area 233 respectively include a plurality of fire holes communicating with the gas storage cavity; the first fire hole area 232 and the second fire hole area 233 are arranged in a staggered mode along the circumferential direction of the outer ring fire cover, and the number of fire holes of the first fire hole area 232 is larger than that of fire holes of the second fire hole area 233. The airflow jetted from the first fire hole area 232 and the airflow jetted from the second fire hole area 233 interact to achieve the effect of stabilizing flames.
Because the number of the fire holes of the first fire hole area 232 and the second fire hole area 233 is different, and the first fire hole area 232 and the second fire hole area 233 are arranged in a staggered manner, the flame intensity formed by the first fire hole area 232 and the second fire hole area 233 is different, and the flames with different intensity are arranged in a staggered manner, so that the flame formed by the first fire hole area 232 and the flame formed by the second fire hole area 233 are mutually stabilized. When the secondary air is guided to the middle ring fire hole 231 through the inner side of the outer ring fire cover main body 20, the secondary air can be dispersedly ejected by the air flows of the first fire hole area 232 and the second fire hole area 233, so as to fully utilize the secondary air to improve the stability of the middle ring flame.
The flame intensity formed by the first fire hole area 232 and the second fire hole area 233 is different, and the two areas interfere with each other, so that the interference of the middle ring flame to the temperature detector is suppressed, and the flame formed by the middle ring fire hole 231 is prevented from continuously affecting the temperature detector.
When the flow guide grooves 211 are provided, one end of the flow guide grooves 211 close to the middle fire hole 231 is located between the first fire hole area 232 and the second fire hole area 233, so that the secondary air is dispersedly guided between the first fire hole area 232 and the second fire hole area 233 to supplement the secondary air to the fire holes of the first fire hole area 232 and the second fire hole area 233, and meanwhile, the secondary air is prevented from directly colliding with the air flow of the first fire hole area 232 and the second fire hole area 233.
Optionally, in this embodiment, the first fire hole area 232 includes a main fire hole 232a and a flame holding fire hole 232b disposed beside the main fire hole 232a, and a diameter of the main fire hole 232a is larger than a diameter of the flame holding fire hole 232 b. Steady flame hole 232b can be for the interval setting is in a plurality of main fire hole 232a sides, through making steady flame hole 232 b's diameter is less than main fire hole 232 a's diameter makes main fire hole 232a with steady flame hole 232 b's air current velocity of flow is different, and then plays the effect of mutual steady flame. In this embodiment, the flame holding holes 232b are symmetrically disposed at two sides of the main holes 232a, and the flame holding holes 232b are disposed near the inner annular wall 21, so that the distance between the air flow formed by the main holes 232a and the temperature detector is relatively long, thereby reducing the influence on the temperature detector. Optionally, the diameter of the flame holding hole 232b is not greater than 1.4mm, and the diameter of the main fire hole 232a is not greater than 1.6mm, so as to avoid interference of flame to the temperature detector caused by too large inner diameters of the flame holding hole 232b and the main fire hole 232 a.
Further alternatively, the diameter of the fire hole of the second fire hole region 233 is smaller than that of the main fire hole 232a, and the second fire hole region 233 may be used to stabilize the flame of the main fire hole 232a of the first fire hole region 232, and meanwhile, by making the fire hole of the second fire hole region 233 smaller than that of the main fire hole 232a, the interference of the flame formed by the second fire hole region 233 with the temperature detector can be further reduced.
The utility model discloses on the basis of above-mentioned outer loop fire lid, still provide the embodiment of a combustor.
Referring to fig. 3 to 6, the burner includes: the gas distribution plate 10 is provided with an outer ring cavity 11 and an inner ring cavity 12; the inner ring fire cover is arranged on the gas distribution plate 10, and an inner ring fire hole communicated with the inner ring cavity 12 is formed in the inner ring fire cover; and the outer ring fire cover body 20 of the outer ring fire cover is arranged on the gas distribution plate 10 and is annularly arranged on the outer side of the inner ring fire cover, and the outer ring cavity 11 is communicated with the gas storage cavity.
The gas distribution plate 10 can be installed on the furnace head to realize the input of the gas flow. The inner ring fire cover is used for forming inner ring flame. Because it is a plurality of the total fire hole area of outer ring fire hole 25 is with a plurality of the ratio of total fire hole area of well fire hole 231 is not less than 1.2, well fire hole 231 with interior ring fire hole cooperatees to heat the pan bottom surface, avoid well fire hole 231 with the too high problem of flame temperature that the inner ring fire hole formed makes the flame homogeneity that the combustor formed is higher. Because the degree of difficulty that well fire hole 231 with the secondary air is introduced to inner ring fire hole is great relatively, sets up through adopting above-mentioned proportion for well fire hole 231 reduces to the demand of secondary air relatively, and then can promote the combustion efficiency of gas.
When being provided with temperature detector, temperature detector locates interior ring fire lid with between the outer ring fire lid. By making the ratio of the total fire hole area of the outer ring fire holes 25 to the total fire hole area of the inner ring fire holes not less than 2, the interference of the middle ring fire holes 231 to the temperature detector is relatively reduced, which is helpful to improve the stability of the operation of the temperature detector.
Optionally, a central cavity 30 is formed between the outer ring fire cover main body 20 and the inner ring fire cover, and a secondary air channel 13 communicating with the central cavity 30 is formed on the air distribution plate 10. The secondary air is conveyed to the middle ring fire hole 231 and the inner ring fire hole through the secondary air channel 13, so that the combustion efficiency of fuel gas is improved, and the generation of harmful gas is reduced.
Further optionally, a protrusion 14 is disposed on the air distributor 10, and the protrusion 14 protrudes into the secondary air channel 13 to guide the secondary air in the secondary air channel 13 toward the middle fire holes 231 of the outer fire cover. The protrusion 14 is disposed near the inner fire cover, so that the secondary air in the secondary air channel 13 can be guided toward the middle fire hole 231. When the outer ring fire cover main body 20 is provided with the guide grooves 211, the secondary air is dispersedly guided to the middle ring fire holes 231 along the guide grooves 211, so that the secondary air can sufficiently act on the middle ring fire holes 231, thereby improving the stability of middle ring flame and the sufficiency of combustion.
The utility model discloses still provide an embodiment of gas cooking utensils, gas cooking utensils include as above-mentioned arbitrary embodiment the combustor.
Claims (17)
1. An outer ring fire cover for a combustor, the outer ring fire cover comprising:
the outer ring fire cover main body is provided with a gas storage cavity;
the middle ring fire holes are annularly arranged on the outer ring fire cover main body and are communicated with the gas storage cavity; and
the outer ring fire holes are annularly arranged on the outer ring fire cover main body and positioned on the outer sides of the middle ring fire holes on the outer ring fire cover main body, and the outer ring fire holes are communicated with the gas storage cavity;
the ratio of the total fire hole area of the outer ring fire holes to the total fire hole area of the middle ring fire holes is not less than 1.2.
2. The outer ring fire cover of claim 1, wherein a temperature detector is provided on an inner side of the outer ring fire cover main body, and a ratio of a total fire hole area of the plurality of outer ring fire holes to a total fire hole area of the plurality of middle ring fire holes is not less than 2.
3. The outer ring fire cover of claim 2, wherein the diameter of the middle ring fire hole is not more than 1.6 mm.
4. The outer ring fire cover of any one of claims 1 to 3, wherein a plurality of said middle fire holes comprise a first fire hole area and a second fire hole area, said first fire hole area and said second fire hole area respectively comprising a plurality of fire holes communicating with said gas storage chamber;
the first fire hole area and the second fire hole area are arranged in a staggered mode along the circumferential direction of the outer ring fire cover, and the number of the fire holes of the first fire hole area is larger than that of the fire holes of the second fire hole area.
5. The outer ring fire cover of claim 4, wherein said first fire hole area comprises a main fire hole and a flame holding fire hole beside said main fire hole, and the diameter of said main fire hole is larger than the diameter of said flame holding fire hole.
6. The outer ring fire cover of claim 5, wherein the number of flame holding fire holes is at least 2.
7. The outer ring fire cover of claim 5, wherein said flame holding fire holes have a diameter of no more than 1.4 mm.
8. The outer ring fire cover of claim 5 wherein the fire holes of said second fire hole section have a diameter smaller than the diameter of said main fire holes.
9. The outer ring fire cover of claim 4 wherein the outer ring fire cover body comprises:
an inner annular wall;
the outer ring wall is annularly arranged on the outer side of the inner ring wall, and the plurality of outer ring fire holes are formed in the outer ring wall; and
the top wall is respectively connected with the inner annular wall and the outer annular wall, the inner annular wall, the top wall and the outer annular wall are enclosed to form the gas storage cavity, and the middle ring fire holes are formed in the top wall.
10. The outer ring fire cover as claimed in claim 9, wherein a plurality of flow guiding grooves for guiding the air flow toward the middle fire hole are concavely formed on a side surface of the inner ring wall facing away from the air storage chamber, and the plurality of flow guiding grooves are arranged at intervals along the circumferential direction of the inner ring wall.
11. The outer ring fire cover of claim 10 wherein an end of said baffle slot adjacent to said middle fire hole is located between said first fire hole area and said second fire hole area.
12. The outer ring fire cover of claim 9, wherein a guide wall is disposed between the top wall and the inner ring wall, a side surface of the guide wall facing away from the gas storage chamber forms a guide slope, the guide slope extends from the axial center of the outer ring fire cover to the inner edge of the top wall, and an end of the middle ring fire hole away from the gas storage chamber is disposed on the guide slope.
13. The outer ring fire cover of claim 12, wherein the guide slope has an angle of not more than 40 ° and not less than 20 ° with a horizontal plane in a projection of a cross section parallel to an axial direction of the outer ring fire cover.
14. A burner, comprising:
the gas distribution plate is provided with an outer ring cavity and an inner ring cavity;
the inner ring fire cover is arranged on the gas distribution plate, and an inner ring fire hole communicated with the inner ring cavity is formed in the inner ring fire cover; and
the outer ring fire cover as claimed in any one of claims 1 to 13, wherein the outer ring fire cover body of the outer ring fire cover is arranged on the gas distribution plate and is annularly arranged on the outer side of the inner ring fire cover, and the outer ring cavity is communicated with the gas storage cavity.
15. The burner of claim 14, wherein a central cavity is formed between the outer ring fire cover body and the inner ring fire cover, and a secondary air passage communicated with the central cavity is formed on the gas distribution plate.
16. The burner of claim 15, wherein the distributor plate has a protrusion protruding into the secondary air channel to guide the secondary air in the secondary air channel toward the plurality of middle fire holes of the outer fire cover.
17. Gas hob, characterized in, that the gas hob comprises a burner according to any one of the claims 14 to 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022635438.0U CN213810621U (en) | 2020-11-13 | 2020-11-13 | Outer ring fire cover, combustor and gas cooking utensils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022635438.0U CN213810621U (en) | 2020-11-13 | 2020-11-13 | Outer ring fire cover, combustor and gas cooking utensils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213810621U true CN213810621U (en) | 2021-07-27 |
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ID=76933417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022635438.0U Active CN213810621U (en) | 2020-11-13 | 2020-11-13 | Outer ring fire cover, combustor and gas cooking utensils |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213810621U (en) |
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2020
- 2020-11-13 CN CN202022635438.0U patent/CN213810621U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220913 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 528311 20 Beijiao Road, Beijiao Town, Shunde District, Foshan, Guangdong Patentee before: FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING Co.,Ltd. |
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| TR01 | Transfer of patent right |