CN111256116B

CN111256116B - Fire cover for gas stove

Info

Publication number: CN111256116B
Application number: CN201811460041.3A
Authority: CN
Inventors: 孙文静
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2022-03-18
Anticipated expiration: 2038-11-30
Also published as: CN111256116A

Abstract

The invention relates to a fire cover for a gas stove, which comprises a fire cover body, wherein a gas mixing cavity is formed between an annular top wall of the fire cover body 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, and the outer annular wall is provided with at least two inner fire holes communicated with the gas mixing cavity at intervals along the circumferential direction, and the fire cover is characterized in that: the outer ring wall periphery has a circle of annular wall sheltered from outside the inner fire hole, a gap is arranged between the annular wall and the outer ring wall, and the annular wall is provided with a first flow guide hole communicated with the inner fire hole.

Description

Fire cover for gas stove

Technical Field

The invention relates to the field of household gas cookers, in particular to an outer ring fire cover of a household gas cooker.

Background

At present, most of traditional burner fire covers sold in the market are milled through a groove, namely a fire ignition groove is milled through the top of the fire cover body, and the burner fire cover is easy to deform due to the fact that the fire 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 boss installed on the inner side wall of the outer ring fire spraying ring, an outer ring fire transfer hole and an outer ring fire transfer groove provided on the boss and the outer ring fire spraying ring, the outer ring fire transfer hole is communicated with the outer ring fire transfer groove, the outer ring fire transfer hole and the outer ring fire transfer groove 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 sufficiently supplemented, the open fire transfer groove can ensure the supplement of the secondary air during the flame combustion in the fire transfer groove, the flame combustion and the fire transfer are facilitated, and the open fire transfer groove has the characteristic of quick fire transfer, but has two disadvantages, the first open fire transfer groove and the open fire transfer groove are easy to cause the blockage of the fire transfer groove, namely soup flowing from the bottom of a pan 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 included; secondly, the requirement of the open fire transmission groove on the air door of the stove is very high, and after the air door is opened to a large extent, too much air can cause too high air speed, thereby causing flame separation or fire release during combustion, therefore, the structural characteristic of the open fire transmission groove is poor in flame stabilizing property, so that the fire transmission performance of the open fire transmission groove is ensured, the air door is basically closed to a small extent, but the air door is closed to be not beneficial to the combustion efficiency of the stove, and is not beneficial to the emission of smoke, thereby greatly influencing the performance of the stove, therefore, the fire transmission groove of the fire cover of the burner needs to be further improved.

In addition, at present, the fire lid of gas-cooker usually comprises roof, annular inside wall and annular lateral wall, and it has a plurality of main fire hole to open along its circumferencial direction on the annular lateral wall of fire lid, and only including single row fire hole on the annular lateral wall of current gas-cooker fire lid, this kind of patent document can refer to chinese utility model patent with patent number ZL200520014838.2 "toper fire lid for gas-cooker combustor (grant bulletin number CN2842216Y), can also refer to chinese utility model patent with patent number ZL 201120246965.0" a combustor fire lid (grant bulletin number CN202149492U), the above-mentioned condition of blockking up by the overflow that also takes place easily in this kind of single row fire hole that discloses.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the fire cover for the gas stove, which aims at the current state of the prior art, wherein the inner fire hole is not easily blocked by overflowing liquid, and the fire cover is particularly suitable for an inner ring fire cover. The technical scheme adopted by the invention for solving the technical problems is as follows: this a fire lid for gas-cooker, including the fire lid body, the annular roof of this fire lid body and the outer rampart that extends downwards from the outside edge of this annular roof is vertical or slope are formed with the gas mixing chamber, outer rampart along the circumference interval seted up at least two with mix the interior fire hole that the gas mixing chamber is linked together, its characterized in that: the periphery of the outer ring wall is provided with a circle of annular wall which is shielded outside the inner fire hole, a gap is arranged between the annular wall and the outer ring wall, and the annular wall is provided with a first flow guide hole which is communicated with the inner fire hole.

The annular wall may be formed by extending the outer annular wall directly outward, or may be formed by: the annular wall is formed by the outer edge of the annular top wall firstly extending towards the horizontal direction and then extending downwards towards the vertical direction or the inclined direction.

Further, the longitudinal section area of the first diversion hole is gradually increased from outside to inside. The design in first water conservancy diversion hole can be so that the play fire in interior fire hole is smooth and easy, and in addition, first water conservancy diversion hole blocks outside the fire hole including, can avoid the air current undulant impact to interior fire hole flame, can also prevent that the phenomenon of tempering from taking place.

Preferably, the first diversion hole is a taper hole.

In order to stabilize the inner flame holes, first flame stabilizing holes staggered with the inner flame holes are formed in the outer ring wall below the inner flame holes, and the first flame stabilizing holes are communicated with the gas mixing cavity.

And in order to prevent the first flame stabilizing hole from being influenced by overflowing and external airflow fluctuation, a second flow guide hole communicated with the first flame stabilizing hole is formed in the annular wall.

With the effect of the first diversion holes, further, the longitudinal section area of the second diversion holes is gradually increased from outside to inside. The design of the second flow guide holes can enable the flame of the first flame stabilizing holes to be smooth, and in addition, the second flow guide holes block the first flame stabilizing holes, so that the impact of airflow fluctuation on the flame of the first flame stabilizing holes can be avoided, and the phenomenon of backfire of the first flame stabilizing holes can be prevented.

Preferably, the second diversion hole is a taper hole.

In order to achieve the function of preventing the overflow liquid from entering the second guide hole, the central part of the second guide hole is provided with a first wall surface which is locally retracted along the radial direction.

Furthermore, for stabilizing the inner flame hole, a circle of flame stabilizing groove is circumferentially arranged on the outer ring wall above the inner flame hole, at least two second flame stabilizing holes communicated with the gas mixing cavity are circumferentially arranged on the annular top wall, and the gas outlet ends of the second flame stabilizing holes are communicated with the flame stabilizing groove.

In order to prevent overflowing liquid from flowing into the first flow guide hole and the second flow guide hole from top to bottom, a circle of convex ring capable of shielding the first flow guide hole and the second flow guide hole extends towards the horizontal direction of the annular top wall.

Compared with the prior art, the fire cover has the advantages that the periphery of the outer ring wall of the fire cover body is provided with the ring-shaped wall which shields the inner fire hole, overflowing liquid can play a role of blocking through the ring-shaped wall and then enters the gap between the ring-shaped wall and the outer ring wall through the first flow guide hole, overflowing liquid is protected from entering the inner fire hole in a double mode, and the fire cover has the advantage of being simple in structure.

Drawings

FIG. 1 is a schematic structural diagram of a fire cover in an embodiment of the present invention;

FIG. 2 is a cross-sectional view at an angle of FIG. 1;

fig. 3 is a cross-sectional view at another angle of fig. 1.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in FIGS. 1 to 3, the preferred embodiment of the present invention is shown. The fire cover for the gas stove of the embodiment comprises a fire cover body 1, a gas mixing cavity 13 is formed by an annular top wall 10 of the fire cover body 1 and an outer annular wall 12 vertically or obliquely extending downwards from the outer edge of the annular top wall 10, at least two inner fire holes 121 communicated with the gas mixing cavity 13 are formed in the outer annular wall 12 at intervals 20 along the circumferential direction, a ring of annular wall 2 sheltering from the outer fire holes 121 is arranged on the periphery of the outer annular wall 12, an interval 20 is formed between the annular wall 2 and the outer annular wall 12, a first flow guide hole 21 communicated with the inner fire holes 121 is formed in the annular wall 2, a ring of annular wall 2 sheltering from the outer fire holes 121 is arranged on the periphery of the outer annular wall 12 of the fire cover body 1, overflowing liquid can play a role of blocking through the annular wall 2 and then enters the interval 20 between the annular wall 2 and the outer annular wall 12 through the first flow guide hole 21, and overflowing liquid is protected doubly not to enter the inner fire holes 121, wherein, the annular wall 2 may be formed by the outer annular wall 12 extending directly outward, or may be formed by: the annular wall 2 is formed by the outer edge of the annular top wall 10 extending first in the horizontal direction and then downwards in a vertical or inclined direction. In addition, the longitudinal section area of the first diversion hole 21 is gradually increased from outside to inside, the fire of the inner fire hole 121 can be smoothly discharged due to the design of the first diversion hole 21, in addition, the first diversion hole 21 blocks the outer part of the inner fire hole 121, the impact of air flow fluctuation on the flame of the inner fire hole 121 can be avoided, and the tempering phenomenon can be prevented. Preferably, the first diversion holes 21 are tapered holes.

In order to stabilize the inner flame holes 121, the outer annular wall 12 is provided with first flame stabilizing holes 122 below the inner flame holes 121, the first flame stabilizing holes 122 are staggered with the inner flame holes 121, and the first flame stabilizing holes 122 are communicated with the gas mixing cavity 13. In order to prevent the first flame stabilizing hole 122 from being affected by the overflowing liquid and the external air flow fluctuation, the annular wall 2 is provided with a second guiding hole 22 communicated with the first flame stabilizing hole 122. With the effect of first water conservancy diversion hole 21, the longitudinal section area outside-in of second water conservancy diversion hole 22 increases gradually, and the design of second water conservancy diversion hole 22 can make the play fire of first flame stabilizing hole 122 smooth and easy, and in addition, second water conservancy diversion hole 22 blocks outside first flame stabilizing hole 122, can avoid the air current undulant impact to first flame stabilizing hole 122 flame, can also prevent that the phenomenon of first flame stabilizing hole 122 tempering from taking place. Preferably, the second guiding hole 22 is a taper hole, and in order to realize that the annular wall 2 itself has the function of preventing the overflow from entering the second guiding hole 22, the central portion of the second guiding hole 22 has a first wall surface 23 which is partially retracted radially inward.

Finally, for stabilizing the flame inner hole 121, the outer annular wall 12 is circumferentially provided with a circle of flame stabilizing grooves 3 above the inner hole 121, the annular top wall 10 is circumferentially provided with a plurality of second flame stabilizing holes 101 communicated with the gas mixing cavity 13, an air outlet end of each second flame stabilizing hole 101 is communicated with the flame stabilizing grooves 3, and in order to prevent the overflow liquid from flowing into the first flow guide holes 21 and the second flow guide holes 22 from top to bottom, the annular top wall 10 is further horizontally extended with a circle of convex rings 102 capable of shielding the convex rings above the first flow guide holes 21 and the second flow guide holes 22.

Claims

1. The utility model provides a fire lid for gas-cooker, is including fire lid body (1), and annular roof (10) of this fire lid body (1) and outer rampart (12) that extend downwards from the outside edge of this annular roof (10) is vertical or slope are formed with gas mixing chamber (13), outer rampart (12) are seted up along circumference interval at least two with gas mixing chamber (13) be linked together interior fire hole (121), its characterized in that: the outer ring wall (12) periphery has a circle of annular wall (2) that shelters from outside interior fire hole (121), have interval (20) between annular wall (2) and outer ring wall (12), and set up on this annular wall (2) and communicate first water conservancy diversion hole (21) of interior fire hole (121), annular wall (2) extend towards the horizontal direction by the outer fringe of cyclic annular roof (10) earlier, then extend downwards towards vertical or slope and form, the longitudinal section area of first water conservancy diversion hole (21) increases gradually from outside to inside.

2. Fire cover for gas cookers according to claim 1, characterized in that: the first diversion hole (21) is a taper hole.

3. The fire cover for the gas range according to any one of claims 1 to 2, wherein: the outer ring wall (12) is provided with first flame stabilizing holes (122) arranged below the inner flame holes (121) in a staggered manner with the inner flame holes (121), and the first flame stabilizing holes (122) are communicated with the gas mixing cavity (13).

4. Fire cover for gas cookers according to claim 3, characterized in that: and a second flow guide hole (22) communicated with the first flame stabilizing hole (122) is formed in the annular wall (2).

5. Fire cover for gas cookers according to claim 4, characterized in that: the longitudinal section area of the second diversion holes (22) is gradually increased from outside to inside.

6. Fire cover for gas cookers according to claim 5, characterized in that: the second diversion hole (22) is a taper hole.

7. The fire cover for the gas range according to any one of claims 4 to 6, wherein: the annular wall (2) is provided with a first wall surface (23) which is locally and radially inwards contracted at the central part of the second diversion hole (22).

8. Fire cover for gas cookers according to claim 7, wherein: the outer ring wall (12) is provided with a circle of flame stabilizing grooves (3) on the inner fire hole (121) along the circumferential direction, the annular top wall (10) is provided with at least two second flame stabilizing holes (101) communicated with the gas mixing cavity (13) along the circumferential direction, and the gas outlet ends of the second flame stabilizing holes (101) are communicated with the flame stabilizing grooves (3).

9. Fire cover for gas cookers according to claim 8, wherein: the annular top wall (10) extends to the horizontal direction to form a circle of convex rings (102) capable of shielding the first diversion holes (21) and the second diversion holes (22).