CN211372411U

CN211372411U - Burner fire cover for gas stove

Info

Publication number: CN211372411U
Application number: CN201921338474.1U
Authority: CN
Inventors: 刘晓刚; 柯情; 王帅东; 徐强; 郑军妹
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-08-28
Anticipated expiration: 2029-08-16

Abstract

The utility model relates to a combustor fire lid for gas-cooker, including last lid, should go up the cyclic annular roof of lid and be formed with the muddy air chamber between the interior border of this cyclic annular roof, the vertical or slope downwardly extending's of outside edge inner ring wall, the outer rampart, the cyclic annular roof of going up the lid radially is equipped with the passageway of igniting, and the passageway of igniting opens the inlet port that has intercommunication muddy air chamber, its characterized in that: the position of the inboard opening below of ignition passageway has the ignition platform that extends from the central direction of the lid that makes progress of global position within the neighbouring interior rampart, compares with prior art, the utility model has the advantages that the ignition passageway is applicable to open ignition mode also can be applicable to hidden ignition mode, is provided with the ignition platform towards the center of upper cover body under the inboard opening of ignition passageway, and this ignition platform can subtract the biography fire distance of short ignition passageway and inner ring fire lid to this ignition platform can effectively prevent that the gas of ignition passageway from being diluted by external cold air, has ensured the gas concentration of ignition platform.

Description

Burner fire cover for gas stove

Technical Field

The utility model relates to a combustor of gas cooking utensils especially relates to a fire lid for combustor.

Background

At present, most of traditional burner fire covers sold in the market are milled with one groove, namely, a fire ignition groove is milled at the top of an upper cover body, and the burner fire cover is easy to deform due to the fact that the upper cover body is disconnected at the fire ignition groove, so that the fire ignition effect is influenced. For example, a similar fire transfer structure is disclosed in the chinese patent invention "gas furnace head with fire transfer device and flameout protection function" with patent No. 201220464214.0 (publication No. CN202813375U), wherein an outer ring fire spraying ring is provided with a plurality of outer ring fire spraying holes, and an outer ring fire transfer device is further provided on the outer ring fire spraying right, the outer ring fire transfer device is composed of a fire striking table installed on the inner side wall of the outer ring fire spraying ring, outer ring fire transfer holes and outer ring fire transfer grooves arranged on the fire striking table and the outer ring fire spraying ring, the outer ring fire transfer holes are communicated with the outer ring fire transfer grooves, the outer ring fire transfer holes and the outer ring fire transfer grooves are communicated with one outer ring fire spraying hole, so as to realize rapid fire transfer; the fire transfer groove of the fire transfer structure is open, the fire transfer groove is linear, namely the fire transfer groove is exposed on the surface of the outer ring fire cover, the design of the design has a benefit that the secondary air in the fire transfer groove is fully supplied, the open fire transfer groove can ensure the supply of the secondary air when the flame in the fire transfer groove is burnt, the flame burning and the fire transfer are facilitated, and the open fire transfer groove has the characteristic of quick fire transfer, but has two bad parts, 1, the fire transfer groove is easy to block, namely the soup flowing from the bottom of a pot is easy to flow into the fire transfer groove, the fire transfer performance is influenced after the blockage, and the main reason for the blockage maintenance of the current fire transfer groove is also the main reason for the blockage of the current fire transfer groove; 2. the open fire transfer groove has high requirements on the air door of the stove, and after the air door is opened to a large extent, the air flow speed is too high due to too much air at one time, so that fuel gas at the ignition port of the fire transfer groove is diluted to cause flame leaving or fire dropping during combustion, and therefore, the structural characteristic of the open fire transfer groove is poor in flame stabilizing property, so that the fire transfer performance of the open fire transfer groove is basically ensured by closing the air door to a small extent, but the closing of the air door is not beneficial to the combustion efficiency of the stove, and is not beneficial to the emission of smoke, and the performance of the stove is greatly influenced; and another kind of hidden fire transmission groove can be easily because the inside oxygen deficiency of fire transmission channel, can not realize stable burning, and the incessant backfire detonation phenomenon appears, causes the sense of fear for the user, for this reason, needs to make further improvement to the fire transmission groove of combustor fire lid.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem that a combustor fire lid for gas-cooker that can effectively guarantee the success rate of igniting is provided.

The utility model aims to solve the second technical problem that a combustor fire cover for gas-cooker that can effectively guarantee to pass fire stably is provided, especially is fit for hidden fire passing.

For solving the first technical problem, the utility model discloses the technical scheme who adopts is: the burner fire cover for the gas stove comprises an upper fire cover, wherein a gas mixing cavity is formed between an annular top wall of the upper fire cover and an inner annular wall and an outer annular wall which vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall, an ignition channel is radially arranged on the annular top wall of the upper cover body, and the ignition channel is provided with a gas inlet communicated with the gas mixing cavity, and the burner fire cover is characterized in that: the position below the inner side opening of the ignition channel is provided with an ignition platform which extends from the position adjacent to the inner peripheral surface of the inner ring wall to the center direction of the upper cover body.

For the convenience of processing the ignition platform, it is preferable that a lower cover body is included, the lower cover body is positioned below the upper cover body, the lower cover body is provided with at least one opening for gas to enter the gas mixing cavity, and the ignition platform is formed by extending a first part of the lower cover body, which is below the inner side opening corresponding to the ignition channel, towards the center of the ignition cover.

In order to facilitate the gas entering the gas mixing cavity, it is preferable that each of the openings of the lower cover body is at least two openings respectively located at two sides of the first portion of the lower cover body.

In order to prevent the overflowing liquid from affecting the ignition path, it is preferable that the upper surface of the ignition platform has an inclined surface which is gradually inclined toward the center of the ignition cover from top to bottom at least in part. The inclined surface plays a role in guiding flow, and prevents overflowing liquid from accumulating on the ignition platform and flowing into the ignition channel to block the ignition channel.

The ignition channel can be an open ignition channel or a hidden ignition channel, preferably, the ignition channel is an ignition hole, and the diameter of the ignition hole is 6-8.5 mm. This ignition hole is hidden, and then speed is very fast from the air and the gas that the inlet port flows, and when air and the gas that flow from inboard opening flowed along the platform of igniting, can suitably slow down the speed of air and gas, simultaneously, has still increased the gas volume of platform of igniting to ensure the success rate of igniting.

For solving the second technical problem, the utility model discloses the technical scheme who adopts does: the inner opening of the ignition hole is provided with an inclined end face, the top end of the inclined end face is farther away from the center of the upper cover body than the bottom end of the inclined end face, and an included angle alpha formed between a connecting line of the top end and the bottom end of the inclined end face and the ignition platform is an obtuse angle. Because the ignition channel is hidden ignition hole, the contained angle alpha that forms between the line of the top of this tip and bottom and the ignition platform is the obtuse angle, can open the air door greatly on the one hand for the primary air volume increase of getting into the inlet port is speed grow simultaneously, thereby can be more with secondary air entrainment entering ignition hole.

Furthermore, the size of the included angle alpha is more than or equal to 90 degrees and less than or equal to 110 degrees. If this angle is too big, then cause the distance between the inboard opening of ignition hole and the inner ring fire lid to elongate easily, then be unfavorable for passing fire, if the angle undersize, then be difficult to entrainment secondary air gets into the ignition hole.

For better diversion of the spill, the periphery of the priming table is preferably rounded.

In order to better make the gas at the inner side opening of the pilot fire channel more sufficient, preferably, the gas inlet hole comprises a first gas inlet hole adjacent to the inner side opening of the pilot fire channel, and the first gas inlet hole is gradually inclined upwards from inside to outside.

Besides the way of arranging the ignition platform through the lower cover body, the ignition platform can be formed by the following way: the ignition platform is directly formed by extending the inner annular wall of the upper cover body towards the center of the upper cover body.

Compared with the prior art, the utility model has the advantages of be applicable to open ignition mode also can be applicable to hidden ignition mode in the ignition passageway, be provided with the ignition platform towards the center of lid under the inboard opening of ignition passageway, this ignition platform can subtract the biography fire distance of short ignition passageway and inner ring fire lid to this ignition platform can effectively prevent that the gas of ignition passageway from being diluted by external cold air, the gas concentration of ignition platform has been ensured, the suitability reinforcing of ignition passageway to the air door aperture simultaneously, also can guarantee to pass the fire performance promptly under the great condition of air door aperture.

Drawings

Fig. 1 is a schematic structural view of an integral burner in which a fire cover is arranged on a base according to embodiment 1 of the present invention;

FIG. 2 is a partial cross-sectional view of FIG. 1;

fig. 3 is a schematic structural view of a fire cover according to embodiment 1 of the present invention;

FIG. 4 is a schematic view of the structure of FIG. 3 at another angle;

FIG. 5 is a schematic structural view of the lower cover in FIG. 3;

fig. 6 is a cross-sectional view of fig. 3.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example 1

As shown in FIGS. 1 to 6, the preferred embodiment of the present invention is shown. The burner fire cover for the gas stove in the embodiment comprises an upper cover body 1, a gas mixing cavity 14 is formed between an annular top wall 11 of the upper cover body 1 and an inner ring wall 12 and an outer ring wall 13 which vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall 11, a fire guiding channel 15 is arranged on the annular top wall 11 of the upper cover body 1 along the radial direction, an air inlet hole communicated with the gas mixing cavity 14 is formed in the fire guiding channel 15, a fire guiding platform 211 facing to the center of the upper cover body 1 is arranged below an inner side opening 22 of the fire guiding channel 15, the fire guiding channel 15 is suitable for an open type fire guiding mode and a hidden type fire guiding mode, a fire guiding platform 211 facing to the center of the upper cover body 1 is arranged below the inner side opening 22 of the fire guiding channel 15, the fire guiding platform 211 can shorten the fire transmission distance between the fire guiding channel 15 and the inner ring fire cover 3, and the gas of the fire guiding platform 211 easily enters an explosion interval, after the flame is ignited, a similar explosion effect is formed, the explosion flame is spread into the ignition channel 15, and the fire transmission speed is high; meanwhile, the ignition platform 211 can effectively prevent the gas of the ignition channel 15 from being diluted by the external cold air, so that the gas concentration of the ignition platform 211 is ensured, in addition, the ignition channel 15 is of a hidden ignition hole structure, the applicability of the ignition channel 15 to the opening degree of the air door is enhanced, and the fire transfer performance can be ensured under the condition of larger opening degree of the air door.

In order to facilitate the processing of the ignition platform 211, the lower cover 2 is further included under the upper cover 1, and the ignition platform 211 is directly formed by extending a first portion 21 of the lower cover 2 under the inner side opening 22 corresponding to the ignition channel 15 towards the center of the upper cover 1. And in order to facilitate the gas to enter the gas mixing cavity 14, it is preferable that the lower cover body 2 further has at least one opening 25 for the gas to enter the gas mixing cavity 14, and each of the openings 25 of the lower cover body 2 is at least two located on two sides of the first portion 21 of the lower cover body 2. Taking two openings 25 as an example, the two openings 25 are symmetrically spaced apart about the first portion 21 of the pyrotechnic cup 211. In addition, in order to prevent the flash from affecting the ignition path 15, the upper surface of the ignition platform 211 has at least a part of an inclined surface 2111 which is inclined gradually toward the center of the upper cover 1 from the top down. The inclined surface 2111 serves as a guide to prevent the overflowing liquid from accumulating on the ignition platform 211 and flowing into the ignition channel 15 to block the ignition channel 15, and the periphery of the ignition platform 211 has a rounded corner for better guiding the overflowing liquid.

Because the ignition channel 15 is hidden ignition hole, the aperture of ignition hole is 6 ~ 8.5mm, preferably 7 mm. On the one hand can open the air door big for the primary air volume increase of entering inlet port is speed grow simultaneously, thereby can be more with secondary air entrainment entering ignition passageway 15, then speed is very fast from the air of inlet port outflow and gas, and when air and the gas that flow from inboard opening 22 flowed along ignition platform 211 flow, can suitably slow down the speed of air and gas, simultaneously, has still increased the gas volume of ignition platform 211, in order to ensure the success rate of igniting. The inner opening 22 of the ignition hole has an inclined end surface 221, the top end of the inclined end surface 221 is farther from the center of the upper cover 1 than the bottom end, and an included angle α formed between a connecting line of the top end and the bottom end of the inclined end surface 221 and the ignition platform 211 is an obtuse angle. Because the ignition channel 15 is a hidden ignition hole, and an included angle alpha formed between a connecting line of the top end and the bottom end of the inclined end surface 221 and the ignition platform 211 is an obtuse angle, on one hand, the air door can be opened to be large, so that the amount of primary air entering the air inlet is increased, meanwhile, the speed is increased, and more secondary air can be sucked into the ignition hole. Preferably, the included angle α is 90 ° ≦ α ≦ 110 °. If the angle is too large, the distance between the inner opening 22 of the ignition hole and the inner ring fire cover is easily lengthened, which is not beneficial to fire transmission, and if the angle is too small, secondary air is not easily sucked into the ignition hole. In addition, in order to better enable the gas inside the inner opening 22 of the pilot fire channel 15 to be more sufficient, the gas inlet holes include a first gas inlet hole 16 adjacent to the inner opening 22 of the pilot fire channel 15, and the first gas inlet hole 16 is gradually inclined towards the center of the upper cover body 1 from top to bottom. Finally, the burner fire cover for the gas stove optimally designs the structure of the hidden ignition channel 15, and improves the fire transmission performance.

Example 2

The structure is basically the same as that of the embodiment 1, and the only difference is that: without the lower cover 2, the priming table 211 is formed by the inner annular wall 12 of the upper cover 1 extending directly towards the center of the upper cover 1.

Claims

1. The burner fire cover for the gas stove comprises an upper cover body (1), wherein a gas mixing cavity (14) is formed between an annular top wall (11) of the upper cover body (1) and an inner annular wall (12) and an outer annular wall (13) which vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall (11), a fire leading channel (15) is arranged on the annular top wall (11) of the upper cover body (1) along the radial direction, and an air inlet communicated with the gas mixing cavity (14) is formed in the bottom of the fire leading channel (15), and the burner fire cover is characterized in that: the position below the inner side opening (22) of the ignition channel (15) is provided with an ignition platform (211) extending from the position adjacent to the inner peripheral surface of the inner ring wall (12) to the center direction of the upper cover body (1), the ignition platform comprises a lower cover body (2) positioned below the upper cover body (1), the lower cover body (2) is provided with at least one opening (25) for gas to enter the gas mixing cavity (14), and the ignition platform (211) is formed by extending a first part (21) of the lower cover body (2) corresponding to the position below the inner side opening (22) of the ignition channel (15) towards the center of the upper cover body (1).

2. Burner fire cover for gas cookers according to claim 1, characterized in that: at least two openings (25) in the lower cover body (2) are respectively positioned on two sides of the first part (21) of the lower cover body (2).

3. The burner fire cover for a gas range as set forth in any one of claims 1 to 2, wherein: the upper surface of the ignition platform (211) is at least partially provided with an inclined surface (2111) which is gradually inclined towards the center of the fire cover from top to bottom.

4. Burner fire cover for gas cookers according to claim 3, characterized in that: the ignition channel (15) is an ignition hole, and the diameter of the ignition hole is 6-8.5 mm.

5. Burner fire cover for gas cookers according to claim 4, characterized in that: the inner side opening (22) of the ignition hole is provided with an inclined end surface (221), the top end of the inclined end surface (221) is farther away from the center of the upper cover body (1) than the bottom end, and an included angle alpha formed between a connecting line of the top end and the bottom end of the inclined end surface (221) and the ignition platform (211) is an obtuse angle.

6. Burner fire cover for gas cookers according to claim 5, characterized in that: the size of the included angle alpha is more than or equal to 90 degrees and less than or equal to 110 degrees.

7. The burner fire cover for a gas range as set forth in any one of claims 5 to 6, wherein: the periphery of the ignition platform (211) is provided with a rounded corner.

8. Burner fire cover for gas cookers according to claim 7, characterized in that: the air inlet holes comprise first air inlet holes (16) adjacent to an inner opening (22) of the ignition channel (15), and the first air inlet holes (16) are gradually inclined towards the center of the upper cover body (1) from top to bottom.