CN217274132U

CN217274132U - Fire cover for gas stove

Info

Publication number: CN217274132U
Application number: CN202220246426.5U
Authority: CN
Inventors: 史丽莎; 刘晓刚; 张波; 俞瑜
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-01-29
Filing date: 2022-01-29
Publication date: 2022-08-23
Anticipated expiration: 2032-01-29

Abstract

The utility model relates to a fire lid for gas-cooker, including annular body, the cyclic annular roof of body reaches from the vertical or slope downwardly extending's of the inboard edge of this cyclic annular roof inner ring wall, still is provided with down the ring body under the body, the up end of lower ring body with annular gap, its characterized in that have between the cyclic annular roof of body: the cyclic annular roof of body towards the annular gap along circumference interval be provided with the butt piece of lower ring body butt, each butt piece has the intercommunication the annular gap with the first through-hole of gas mixing chamber compares with prior art, the utility model has the advantages of: the setting of butt joint piece can make the body more stable with the combination between the lower ring body for the difficult emergence of width of annular gap changes, and the first through-hole that sets up on the butt joint piece can avoid the annular gap to correspond the part of butt joint piece and can not go out the defect of fire in addition.

Description

Fire cover for gas stove

Technical Field

The utility model relates to a domestic kitchen utensils and appliances technical field especially relates to a fire lid for gas-cooker.

Background

The fire holes of the existing atmospheric burner are roughly as follows: the fire hole cover is characterized by comprising a plurality of circular fire holes, square fire holes and strip fire holes, wherein the circular fire holes and the strip fire holes are formed by machining, dozens of fire holes are needed on a single fire cover to ensure the thermal strength of the fire holes, and the problems of low production efficiency, waste of a large amount of materials, high machining cost and the like exist; the square fire holes are generally formed by forging, but the square fire holes have more tolerance requirements, so that the requirement on the precision of the die is high, the die is complex and the service life is short. In addition, the fire holes are independent small holes, and pain spots which are difficult to clean after being blocked exist. The existing burner adopts an annular fire hole, the problem of high processing cost of a round fire hole, a square fire hole and a strip-shaped fire hole is solved, but an annular fire hole channel is arranged on the top surface of a fire cover, the angle of the fire hole is 90 degrees, the technical defects that secondary air is difficult to supplement and flames between adjacent annular fire holes are easy to interfere in a cross mode are overcome, yellow flames can be generated, the content of CO is unqualified, the thermal efficiency is low and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a fire channel has a fire lid for gas-cooker of good steady flame effect is provided to above-mentioned prior art current situation.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this a fire lid for gas-cooker, including annular body, the cyclic annular roof of body and the interior rampart that extends downwards from the inboard edge of this cyclic annular roof is vertical or slope, still be provided with down the ring body below the body, down the ring body with interior rampart, cyclic annular roof enclose into the gas mixing chamber jointly, the up end of lower ring body with have annular seam between the cyclic annular roof of body, its characterized in that: the annular top wall of the body is provided with abutting blocks which are abutted to the lower ring body at intervals along the circumferential direction towards the annular gap, and each abutting block is provided with a first communication hole which is communicated with the annular gap and the air mixing cavity.

In order to realize the flame stabilizing effect of the annular gap, preferably, the caliber of the annular gap is gradually enlarged along the air outlet direction of the air mixing cavity. The caliber of the annular seam gradually expands to slowly reduce the air flow speed, and compared with the conventional equal-width annular seam, the annular seam further enhances the pressure-stabilizing and flame-stabilizing effects.

In order to realize the flame stabilizing effect of the annular gap, from another angle, it is preferable that the caliber of the annular gap has a narrowing section and an expanding section located downstream of the narrowing section along the air outlet direction of the air mixing chamber. The annular gap with the gradually reduced and gradually expanded structure can realize the deceleration of the accelerated air flow, the narrowing section can accelerate the flow rate of the air flow, the expanding section can slowly reduce the air flow speed, the narrowing section can avoid the backfire phenomenon caused by the over-slow air flow formed by the overlarge width of the annular gap, the flashover phenomenon caused by the over-fast air flow speed can be formed if the narrowing section is too narrow, and therefore the expanding section is arranged at the downstream of the narrowing section, so that the expanding section can buffer the part with the over-fast air flow speed in the partial narrowing section to stabilize the flame annular gap.

In order to realize multiple ring fires of the fire cover, preferably, the outer edge of the annular top wall of the body extends obliquely outwards to form an outer ring part, and a ring of first annular seams communicated with the gas mixing cavity are arranged on the outer ring part along the circumferential direction.

In order to realize the inflow of the fuel gas in the first annular gap, preferably, at least two second communication holes communicating the gas mixing chamber and the first annular gap are formed at the bottom of the outer ring part at intervals along the circumferential direction.

Also in order to realize multiple ring fires of the fire cover, preferably, the upper end surface of the lower ring body is circumferentially provided with a circle of second annular seams communicated with the gas mixing cavity.

In order to realize the inflow of the fuel gas in the second annular gap, preferably, at least two third communication holes which are communicated with the gas mixing cavity and the second annular gap are formed in the lower annular body adjacent to the annular gap along the circumferential direction.

In order to achieve mutual close together between the annular seams to stabilize the flames, preferably, the first annular seam and the second annular seam are arranged close together towards the annular seams.

In order to achieve uniformity of the heating pan bottom between the annular seams, the first annular seam and the second annular seam are preferably arranged in an expanding manner away from the annular seams.

Compared with the prior art, the utility model has the advantages of: the annular top wall through the body is provided with the butt piece with lower ring body butt towards the annular gap along circumference interval, and each butt piece has the first through-hole of intercommunication annular gap and gas mixing chamber, and wherein the setting up of butt piece can make the body and the combination between the lower ring body more stable for the width of annular gap is difficult for taking place to change, and the first through-hole that sets up on the butt piece can avoid the annular gap to correspond the part of butt piece can not go out the defect of fire in addition.

Drawings

Fig. 1 is a schematic structural view of a fire cover in embodiment 1 of the present invention;

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

FIG. 3 is a cross-sectional view at another angle from FIG. 1;

fig. 4 is a schematic structural view of the body in embodiment 1 of the present invention;

FIG. 5 is a cross-sectional view of FIG. 4;

fig. 6 is a schematic structural view of a lower ring body in embodiment 1 of the present invention;

FIG. 7 is a cross-sectional view of FIG. 6;

fig. 8 is a cross-sectional view of a fire cover in embodiment 2 of the present invention;

fig. 9 is a cross-sectional view of a fire cover in embodiment 3 of the present invention;

fig. 10 is a cross-sectional view of a fire lid in embodiment 4 of the present invention.

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 7, the preferred embodiment of the present invention is shown. The fire lid for gas-cooker of this embodiment is including annular body 1, the cyclic annular roof 11 of body 1 and the interior rampart 12 that extends downwards from the vertical or slope of the inboard edge of this cyclic annular roof 11, still be provided with down ring body 2 under the body 1, lower ring body 2 and interior rampart 12, cyclic annular roof 11 encloses into gas mixing chamber 21 jointly, annular seam 3 has between the up end of lower ring body 2 and the cyclic annular roof 11 of body 1, the cyclic annular roof 11 of body 1 is provided with the butt piece 13 with lower ring body 2 butt towards annular seam 3 along circumference interval, each butt piece 13 has the first through-hole 131 that communicates annular seam 3 and gas mixing chamber 21. The cyclic annular roof 11 through body 1 is provided with the butt piece 13 with lower ring body 2 butt towards annular gap 3 along circumference interval, each butt piece 13 has the first intercommunication hole 131 of intercommunication annular gap 3 and gas mixing chamber 21, wherein the setting up of butt piece 13 can make the combination between body 1 and the lower ring body 2 more stable, make the difficult emergence of width change of annular gap 3, the first intercommunication hole 131 that sets up in addition on the butt piece 13 can avoid annular gap 3 to correspond the defect that the part of butt piece 13 can not go out the fire.

Specifically, in order to enable the flame stabilizing effect of the annular gap 3, it is preferable that the caliber of the annular gap 3 is gradually enlarged along the air outlet direction of the air mixing chamber 21. The caliber of the annular seam 3 gradually expands to slowly reduce the air flow speed, and compared with the conventional equal-width annular seam, the constant-pressure flame-stabilizing effect can be further enhanced. In order to realize the multi-ring fire of the fire cover, the outer edge of the annular top wall 11 of the body 1 of the embodiment extends obliquely and outwardly to form an outer ring portion 4, the outer ring portion 4 is circumferentially provided with a circle of first annular slits 41 communicated with the air mixing chamber 21, and the bottom of the outer ring portion 4 is circumferentially provided with at least two second communication holes 42 communicated with the air mixing chamber 21 and the first annular slits 41 at intervals, so that the inflow of the gas in the first annular slits 41 can be realized, and also in order to realize the multi-ring fire of the fire cover, the upper end surface of the lower ring body 2 is circumferentially provided with a circle of second annular slits 22 communicated with the air mixing chamber 21, and the lower ring body 2 is circumferentially provided with at least two third communication holes 23 communicated with the air mixing chamber 21 and the second annular slits 22 adjacent to the annular slits 3, so as to realize the inflow of the gas in the second annular slits 22.

Example 2

The structure is basically the same as that of the embodiment 1, and the only difference is that: in order to achieve the flame stabilizing effect of the annular gap 3, the aperture of the annular gap 3 has a narrowed section 31 and an expanded section 32 located downstream of the narrowed section 31 in the direction of the outlet of the air mixing chamber 21. The tapered and gradually expanded annular gap 3 can realize deceleration after airflow acceleration, wherein the narrowing section 31 can accelerate the flow velocity of the airflow and the expanding section 32 can slowly reduce the airflow velocity, the narrowing section 31 can avoid the backfire phenomenon caused by too slow airflow due to too large width of the annular gap 3, but the flashover phenomenon caused by too fast airflow velocity can be also formed if the narrowing section 31 is too narrow, and the expanding section 32 is arranged at the downstream of the narrowing section 31, so that the expanding section 32 can buffer the part of the narrowing section 31 with too fast airflow velocity to stabilize the annular gap 3, as shown in fig. 7.

Example 3

The structure is basically the same as that of the embodiment 1, and the only difference is that: the first annular slit 41 and the second annular slit 22 are arranged close together toward the annular slit 3 to achieve mutual close together between the annular slits for mutual flame stabilization, as shown in fig. 9.

Example 4

The structure is basically the same as that of the embodiment 1, and the only difference is that: the first annular gap 41 and the second annular gap 22 are arranged to be expanded away from the annular gap 3 to achieve uniformity of heating of the bottom of the pan between the annular gaps, as shown in fig. 10.

Claims

1. The utility model provides a fire lid for gas-cooker, including annular body (1), the cyclic annular roof (11) of body (1) and from the vertical or slope downwardly extending's of the inboard edge of this cyclic annular roof (11) inner ring wall (12), still be provided with down ring body (2) under body (1), down ring body (2) with inner ring wall (12), cyclic annular roof (11) enclose into gas mixing chamber (21) jointly, the up end of lower ring body (2) with have annular seam (3) between the cyclic annular roof (11) of body (1), its characterized in that: the annular top wall (11) of the body (1) is provided with abutting blocks (13) which are abutted to the lower ring body (2) at intervals along the circumferential direction towards the annular gap (3), and each abutting block (13) is provided with a first communication hole (131) which is communicated with the annular gap (3) and the air mixing cavity (21).

2. Fire cover for gas cookers according to claim 1, characterized in that: the caliber of the annular gap (3) is gradually enlarged along the air outlet direction of the air mixing cavity (21).

3. Fire cover for gas cookers according to claim 1, characterized in that: the caliber of the annular gap (3) is provided with a narrowing section (31) and an expanding section (32) positioned at the downstream of the narrowing section (31) along the air outlet direction of the air mixing cavity (21).

4. The fire cover for the gas range according to any one of claims 1 to 3, wherein: the outer edge of the annular top wall (11) of the body (1) extends outwards in an inclined mode to form an outer ring portion (4), and a circle of first annular seams (41) communicated with the air mixing cavity (21) are formed in the outer ring portion (4) in the circumferential direction.

5. Fire cover for gas cookers according to claim 4, characterized in that: the bottom of the outer ring part (4) is provided with at least two second communication holes (42) at intervals along the circumferential direction, and the second communication holes are communicated with the gas mixing cavity (21) and the first circular seam (41).

6. Fire cover for gas cookers according to claim 5, characterized in that: and a circle of second annular seams (22) communicated with the air mixing cavity (21) are formed in the upper end surface of the lower ring body (2) along the circumferential direction.

7. Fire cover for gas cookers according to claim 6, wherein: the lower ring body (2) is adjacent to the annular gap (3) and is provided with at least two third communicating holes (23) which are communicated with the air mixing cavity (21) and the second annular gap (22) along the circumferential direction.

8. Fire cover for gas cookers according to claim 7, wherein: the first annular seam (41) and the second annular seam (22) are arranged close to each other towards the annular seam (3).

9. Fire cover for gas cookers according to claim 7, wherein: the first annular seam (41) and the second annular seam (22) are arranged away from the annular seam (3) in an expanding manner.