CN110966599A

CN110966599A - Fire cover for gas stove

Info

Publication number: CN110966599A
Application number: CN201811154624.3A
Authority: CN
Inventors: 程永超; 郑军妹
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2020-04-07

Abstract

The invention relates to a fire cover for a gas stove, which is characterized in that: the fire cover comprises an annular body, a gas mixing chamber is formed between an annular top wall of the body and an inner ring wall and an outer ring wall which respectively vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall, a relatively isolated air replenishing chamber is arranged in the gas mixing chamber, the air replenishing chamber is at least provided with an air inlet hole which is communicated with the external air, and at least provided with a first main fire hole which is communicated with the gas mixing chamber.

Description

Fire cover for gas stove

Technical Field

The invention relates to the field of household gas cookers, in particular to a fire cover adapted to a combustion stove.

Background

The primary air coefficient of the existing atmospheric stove burner is generally 0.4-0.7, the premixed air cannot reach the air amount required by complete combustion, and various factors are added, so that certain secondary air supplement is required, and in order to reduce the emission of CO, the secondary air supplement is required to be as sufficient as possible. At present, the mode that the cooking utensils combustor supplyed the air is diversified, generally has the side mode of admitting air and admitting air down, and the side air inlet mode is opened the side air intake at the lateral part of gas mixing chamber promptly, and the outside air carries out the secondary air through this side air intake and supplyes, and the air intake is opened down at the base seat promptly to the mode of admitting air down, and the air of cooking utensils below carries out the secondary air through this air intake down and supplyes. Although the side air intake mode has the advantages of small intake resistance and large intake air amount, the existing side air intake combustor still has the problems as follows: due to the injection effect of combustion hot air flow, secondary air is sucked by the inner fire cover and the outer fire cover through the air mixing chamber side air inlet, the heat load of an inner ring is small, the coefficient of primary air is higher than that of an outer ring, the sucked secondary air is always excessive, the secondary air sucked by a middle ring fire hole of the outer fire cover is insufficient, the secondary air is reasonably distributed, meanwhile, the inner ring and the outer ring are fully combusted, if a secondary air supplementing channel is too large, the sucked secondary air is large, the heat taken away by smoke exhaust is increased, and the heat efficiency is low; the secondary air supplement channel is too small, and incomplete fuel gas and over-standard smoke emission are inevitably caused by insufficient secondary air supplement amount. In order to realize the good performance of the gas stove on efficiency and smoke emission under different use environments of users, the gas stove can supplement proper amount of secondary air to have great influence on combustion conditions. Further improvements are needed.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide another fire cover for a gas stove, which can supplement secondary air to fire holes and effectively reduce the supplement rate, in view of the above-mentioned prior art.

The second technical problem to be solved by the present invention is to provide a fire cover for a gas stove with good flame stabilizing effect in view of the above-mentioned current state of the art.

The technical scheme adopted by the invention for solving the technical problems is as follows: this a fire lid for gas-cooker, its characterized in that: the fire cover comprises an annular body, a gas mixing chamber is formed between an annular top wall of the body and an inner annular wall and an outer annular wall which respectively vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall, an air replenishing chamber which is relatively isolated is arranged in the gas mixing chamber, the air replenishing chamber is at least provided with an air inlet hole which is in fluid communication with the outside air, and at least provided with a first main fire hole which is communicated with the gas mixing chamber.

The air replenishing chamber can be one or a plurality of air replenishing chambers, and at least two opposite isolated air replenishing chambers are arranged in the air mixing chamber along the circumferential direction of the air mixing chamber.

The air inlet hole can be formed in any wall surface of the air supplementing chamber, and only a connecting channel with the outside air is needed, preferably, the top wall of the air supplementing chamber can be mutually independent from the annular top wall of the fire cover, or the top wall of the air supplementing chamber can be one part of the annular top wall of the fire cover body, and the top wall is provided with the air inlet hole which is in fluid communication with the air supplementing chamber. The design mode can effectively increase the air inlet area of the air inlet hole of the air supplement chamber.

Further, the side walls of the air replenishment chamber have four: the second side wall and the third side wall are connected with the outer ring wall and the first side wall, and the first main fire hole is formed in the fourth side wall.

In order to enable a user to independently control the central fire and the peripheral fire formed by the fire cover of the burner, a vertical annular partition plate is arranged in the gas mixing chamber to divide the gas mixing chamber into the first gas mixing chamber positioned on the inner side and the second gas mixing chamber positioned on the outer side, and the air supplementing chamber is positioned in the second gas mixing chamber. Wherein the first gas mixing chamber corresponds to the first outer fire, and the second gas mixing chamber corresponds to the first central fire.

The first side wall is a part of the annular partition plate for less overall connection structure.

The annular top wall extends upwards to form a circle of convex ring corresponding to the position of the annular partition plate, and the part of the convex ring corresponding to the first side wall is provided with an air outlet hole communicated with the outside and the air supplementing chamber.

In order to supplement secondary air to the inner fire hole of the inner ring wall more quickly, the inner ring wall is provided with inner fire holes communicated with the first air mixing chamber at intervals along the circumferential direction, and the air outlet hole faces the inner fire holes.

Preferably, the inner fire holes are gradually inclined upwards from outside to inside.

In order to stabilize the flame inner fire hole, a first groove is circumferentially formed in the inner ring wall below the inner fire hole, and the inner fire hole penetrates through the first groove.

Similarly, for the flame stabilizing main fire hole, second main fire holes communicated with the second gas mixing chamber are formed in the outer ring wall at intervals along the circumferential direction, a second groove is formed in the outer ring wall below the second main fire holes along the circumferential direction, and the second main fire holes penetrate through the second groove.

Compared with the prior art, the invention has the advantages that the fire cover capable of supplementing secondary air per se is provided, the secondary air can not be supplemented through the air mixing chamber of the burner, particularly the secondary air can be supplemented aiming at the inner ring, wherein the air mixing chamber of the fire cover is internally provided with the relatively isolated air supplementing chamber which is at least provided with an air inlet hole in fluid communication with the outside air and at least provided with a first main fire hole communicated with the air mixing chamber, the secondary air enters the air mixing chamber through the air inlet hole and can be buffered to prevent the over-high air outlet speed of the first main fire hole to cause flame separation, and meanwhile, the first main fire hole of the air supplementing chamber can emit fire, so that the fire emitting pressure of the main fire hole in the outer ring wall can be relieved; meanwhile, the thickness of the outer ring wall corresponding to the main fire hole in the outer ring wall can be reduced, so that the depth of the main fire hole in the outer ring wall can be correspondingly reduced, the stable flow of the main fire hole in the outer ring wall can be ensured, the flame of the first fire outlet hole is stable, and the material and the manufacturing cost are saved and are correspondingly reduced.

Drawings

FIG. 1 is a schematic view of an angle of a fire cover according to an embodiment of the present invention;

FIG. 2 is a schematic view of another angle of the fire cover according to the embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a fire lid in an embodiment of the invention.

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 cap 1 for the gas stove of the embodiment comprises an annular body 11, a gas mixing chamber 15 is formed between an annular top wall 12 of the body 11 and an inner annular wall 13 and an outer annular wall 14 which respectively extend downwards from the inner edge and the outer edge of the annular top wall 12 in a vertical or inclined mode, a relatively isolated air supplement chamber 2 is arranged in the gas mixing chamber 15, the air supplement chamber 2 at least comprises an air inlet 21 which is communicated with the outside air in a fluid mode, at least comprises a first main fire hole 141 which is communicated with the gas mixing chamber 15, and at least two relatively isolated air supplement chambers 2 are arranged in the gas mixing chamber 15 and are arranged along the circumferential direction of the gas mixing chamber 15. Of course, the air supply chamber 2 may also be a single integrated ring. Thus, by arranging the air supplement chamber 2 with relative isolation in the air mixing chamber 15 of the fire cover 1, certainly, the air supplement chamber 2 needs to be isolated from the air mixing chamber 15, and can be used as a closed wall (not shown) through the bottom wall of the air supplement chamber 2, and can also be relatively isolated by matching with the base of the burner, the air supplement chamber 2 is provided with a plurality of air inlet holes 21 which are in fluid communication with the outside air, and is provided with a plurality of first main fire holes 141 which are communicated with the air mixing chamber 15, and the secondary air enters the air mixing chamber 15 through the air inlet holes 21 and flows out from the first main fire holes 141 after being buffered, so that the excessive high air outlet speed of the first main fire holes 141 can be prevented, flame separation can be caused, meanwhile, the first main fire holes 141 of the air supplement chamber 2 can emit fire, and the fire outlet pressure of the first main fire holes 141 in the outer ring wall 14 can; for convenience of processing, from the viewpoint that the air supplement chamber 2 has a large air inlet, preferably, the air supplement chamber 2 includes a top wall, the top wall is a part of the annular top wall 12 of the fire lid body 11, and the top wall is provided with an air inlet 21 in fluid communication with the air supplement chamber 2.

Specifically, the air replenishment chamber 2 has four side walls: a fourth sidewall 23 adjacent to the outer annular wall 14 and spaced apart from the outer annular wall 14, a first sidewall 24 opposite to the fourth sidewall 23, and a second sidewall 25 and a third sidewall 26 connecting the outer annular wall 14 and the first sidewall 24, wherein the fourth sidewall 23 is opened with a first main fire hole 141. In order to allow a user to separately control the center fire and the outer circumference fire formed by the fire cover 1 of the burner, a vertical ring-shaped partition plate 3 is provided in the air mixing chamber 15 to partition the air mixing chamber 15 into a first air mixing chamber 151 located at the inner side and a second air mixing chamber 152 located at the outer side, and an air supplement chamber 2 is located in the second air mixing chamber 152. The first side wall 24 is a part of the annular partition plate 3, so that the overall connection structure is small. In order to realize that the air replenishing chamber 2 can also replenish secondary air to the fire holes corresponding to the second air mixing chamber 152, a circle of convex ring 121 extends upwards from the position of the annular top wall 12 corresponding to the annular partition plate 3, and the part of the convex ring 121 corresponding to the first side wall 24 is provided with an air outlet 1211 for communicating the outside with the air replenishing chamber 2. In order to supplement the secondary air to the inner fire holes 131 of the inner annular wall 13 more quickly, the inner annular wall 13 is provided with the inner fire holes 131 communicated with the first air mixing chamber 151 at intervals along the circumferential direction, and the air outlet 1211 faces the inner fire holes 131. In order to further stabilize the flame inside hole 131, the inner annular wall 13 is circumferentially opened with a first groove 132 below the flame inside hole 131, the flame inside hole 131 penetrates the first groove 132, preferably, the flame inside hole 131 is inclined upward from the outside to the inside, and also in order to stabilize the flame inside hole 141, the inner annular wall 13 is circumferentially opened with a first groove 132 penetrating the flame inside hole 131 below the flame inside hole 131. In order to stabilize the flame, the outer annular wall 14 of the main fire hole 141 of the present invention is circumferentially provided with second main fire holes 143 at intervals, the second main fire hole 143 is communicated with the second gas mixing chamber 152, the second groove 142 is circumferentially formed in the outer annular wall 14 below the second main fire hole 143, and the second main fire hole 143 penetrates the second groove 142.

Claims

1. A fire lid for a gas stove is characterized in that: the fire cover (1) comprises an annular body (11), a gas mixing chamber (15) is formed between an annular top wall (12) of the body (11) and an inner annular wall (13) and an outer annular wall (14) which respectively vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall (12), a relatively isolated air replenishing chamber (2) is arranged in the gas mixing chamber (15), the air replenishing chamber (2) at least has one air inlet hole (21) which is in fluid communication with the outside air, and at least has a first main fire hole (141) which is communicated with the gas mixing chamber (15).

2. Fire cover for gas cookers according to claim 1, characterized in that: at least two opposite isolated air supplement chambers (2) are arranged in the air mixing chamber (15) along the circumferential direction of the air mixing chamber (15).

3. Fire cover for gas cookers according to claim 1 or 2, characterized in that: the air replenishing chamber (2) comprises a top wall, the top wall is one part of an annular top wall (12) of the fire cover body (11), and an air inlet hole (21) communicated with the air replenishing chamber (2) in a fluid mode is formed in the top wall.

4. Fire cover for gas cookers according to claim 3, characterized in that: the side walls of the air replenishing chamber (2) are four: a fourth side wall (23) adjacent to the outer ring wall (14) and spaced from the outer ring wall (14), a first side wall (24) opposite to the fourth side wall (23), and a second side wall (25) and a third side wall (26) connecting the outer ring wall (14) and the first side wall (24), wherein the fourth side wall (23) is provided with the first main fire hole (141).

5. Fire cover for gas cookers according to claim 4, characterized in that: the air mixing chamber (15) is internally provided with a vertical annular partition plate (3) so as to divide the air mixing chamber (15) into a first air mixing chamber (151) positioned on the inner side and a second air mixing chamber (152) positioned on the outer side, and the air supplementing chamber (2) is positioned in the second air mixing chamber (152).

6. Fire cover for gas cookers according to claim 5, characterized in that: the first side wall (24) is part of the annular partition plate (3).

7. Fire cover for gas cookers according to claim 6, wherein: a circle of convex ring (121) extends upwards from the position of the annular top wall (12) corresponding to the annular partition plate (3), and an air outlet hole (1211) communicated with the outside and the air replenishing chamber (2) is formed in the part, corresponding to the first side wall (24), of the convex ring (121).

8. The fire cover for the gas range according to any one of claims 4 to 7, wherein: the inner ring wall (13) is provided with inner fire holes (131) communicated with the first gas mixing chamber (151) at intervals along the circumferential direction, and the air outlet holes (1211) face the inner fire holes (131).

9. Fire cover for gas cookers according to claim 8, wherein: the inner fire hole (131) is gradually inclined upwards from outside to inside.

10. Fire cover for gas cookers according to claim 9, wherein: the inner ring wall (13) is circumferentially provided with a first groove (132) below the inner fire hole (131), and the inner fire hole (131) penetrates through the first groove (132).

11. Fire cover for gas cookers according to claim 5, 6 or 7, characterized in that: the outer ring wall (14) is provided with second main fire holes (143) communicated with the second gas mixing chamber (152) at intervals along the circumferential direction, a second groove (142) is formed in the outer ring wall (14) below the second main fire holes (143) along the circumferential direction, and the second main fire holes (143) penetrate through the second groove (142).