CN213777713U

CN213777713U - Fire cover for stove burner and stove burner

Info

Publication number: CN213777713U
Application number: CN202022216982.1U
Authority: CN
Inventors: 朱志新; 茅忠群; 诸永定
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-07-23
Anticipated expiration: 2030-09-30

Abstract

The utility model relates to a fire cover for a stove burner and the stove burner, the fire cover for the stove burner comprises a lower cover, a plurality of lower grooves which are arranged at intervals along the circumferential direction are arranged on the top wall surface, and an upper convex part is formed between two adjacent lower grooves; the upper cover is arranged above the lower cover, the bottom wall surface is provided with a lower convex part at the position corresponding to the lower concave groove and an upper concave groove at the position corresponding to the upper convex part; the method is characterized in that: when the upper cover is arranged on the lower cover, the lower convex part is positioned in the corresponding lower groove, a gap is reserved between the bottom surface of the lower convex part and the corresponding lower groove to form a first fire outlet channel, the upper convex part is positioned in the corresponding upper groove, a gap is reserved between the top surface of the upper convex part and the corresponding upper groove to form a second fire outlet channel, and a gap for communicating the first fire outlet channel with the second fire outlet channel is reserved between the adjacent lower convex part and the upper convex part. The outer side of the fire cover forms continuously distributed annular flame, the contact area of the flame cover and secondary air is increased, and the combustion of the flame is enhanced.

Description

Fire cover for stove burner and stove burner

Technical Field

The utility model belongs to the cooking utensils field, concretely relates to fire lid and cooking utensils combustor for cooking utensils combustor.

Background

A common household burner generally has an outer fire cover and an inner fire cover, and together with an ignition needle, a thermocouple (or an ion sensing needle with the same function), and other elements, realizes the functions of generating flame, maintaining flame, and the like. The outer fire lid structure of current combustor generally covers the body including the outer fire that has a plurality of main fire passageways (go out the fire hole), and this internal gas mixing chamber that has of outer fire lid, this gas mixing chamber and main fire passageway intercommunication, the gas and the mist of air flow through main fire passageway after mixing the gas mixing chamber, are lighted and form burning flame.

The existing fire cover, like the fire cover of a burner in the Chinese utility model patent, the patent number of which is ZL201721133029.2 (the publication number is CN207112817U), discloses a fire cover of a burner, which comprises a fire cover body, an upper cover and a base, wherein the upper cover and the base are both annular, the base is provided with an annular groove, a first air inlet is arranged on the bottom wall of the annular groove, the upper cover is covered on the opening of the annular groove, and the bottom surface of the upper cover and the inner wall of the annular groove are enclosed to form an air mixing annular cavity; one of the lower part of any side edge of the upper cover and the top edge of the corresponding side wall of the annular groove is provided with vertically extending lugs at intervals along the circumferential direction, the other part is provided with corresponding vertical depressions to form pits for embedding the lugs, the pits can be communicated with the air mixing ring cavity and the outside, and a gap is reserved between the lugs and the inner wall of the pits to form at least one fire outlet hole. The fire cover increases the fire area and improves the heat efficiency, but the flame outside the fire cover may have unstable condition, namely, the flame stabilizing effect is not good.

Accordingly, further improvements to existing fire covers are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem that to the current situation of above-mentioned prior art, provide a flame burning strengthens and stable fire lid that is used for cooking utensils combustor.

The second technical problem to be solved by the utility model is to provide a cooking utensils combustor with above-mentioned fire lid.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: a fire cover for a stove burner comprises

The lower cover is annular, a plurality of lower grooves are formed in the top wall surface of the lower cover at intervals along the circumferential direction, and an upper convex part is formed between every two adjacent lower grooves;

the upper cover is annular and arranged above the lower cover, a lower convex part is arranged on the bottom wall surface of the upper cover at the position corresponding to the lower concave groove, and an upper concave groove is arranged at the position corresponding to the upper convex part;

the method is characterized in that: when the upper cover is arranged on the lower cover, the lower convex part is positioned in the corresponding lower groove, a gap is reserved between the bottom surface of the lower convex part and the corresponding lower groove to form a first fire outlet channel, the upper convex part is positioned in the corresponding upper groove, a gap is reserved between the top surface of the upper convex part and the corresponding upper groove to form a second fire outlet channel, and a gap for communicating the first fire outlet channel and the second fire outlet channel is reserved between the adjacent lower convex part and the upper convex part.

In order to increase the contact area of the fire flame and the bottom of the cooker, the first fire outlet channel and the second fire outlet channel are gradually inclined upwards from inside to outside. Therefore, under the same size of the fire cover, the contact area between the outer ring flame and the bottom of the cooker is increased, and the heat efficiency is improved.

There are various ways of forming the upper convex portion, the upper groove, the lower convex portion and the lower groove, but preferably, the top wall surface of the lower cover gradually inclines upwards from inside to outside, the top wall surface of the lower cover is partially recessed downwards to form the lower groove, the lower groove gradually inclines upwards from inside to outside, the upper cover comprises a top plate in a ring shape, the outer edge of the top plate extends downwards to form an outer ring wall, the bottom surface of the outer ring wall is an inclined surface gradually inclining upwards from inside to outside, the inclined surface is partially recessed upwards to form the upper groove, and the upper groove gradually inclines upwards from inside to outside.

Preferably, the bottom surface of the lower groove and the top surface of the upper groove are both arc-shaped surfaces.

Specifically, the first fire outlet passage has a longitudinal cross-sectional area of S1, and correspondingly, the lower protrusion has a width L in the circumferential direction, and a circle having the width L as a diameter has an area S, and the longitudinal cross-sectional area S1 satisfies: 0.5S < S1 < S; the second flame-out passage has a longitudinal cross-sectional area of S2, and correspondingly, the upper protrusion has a width W in the circumferential direction, and the circle having the width W as the diameter has an area S₀The longitudinal sectional area S2 satisfies: 0.5S₀＜S2＜S₀。

In order to form continuous and evenly distributed annular flame on the outer side of the fire cover, at least two adjacent gaps are provided with fire transfer grooves, and the fire transfer grooves are communicated with the adjacent gaps.

For stable fire transfer, it is further preferable that the fire transfer grooves are at least two and are circumferentially spaced.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the utility model provides a cooking utensils combustor with foretell fire lid which characterized in that: the fire cover is an outer fire cover, the outer fire cover is placed at the open top of the annular cavity and is provided with an outer ring gas mixing chamber communicated with the first fire outlet channel and the second fire outlet channel between the annular cavity.

In order to inject mixed gas of air and fuel gas into the outer ring gas mixing chamber, an outer ring injection pipe communicated with the outer ring gas mixing chamber is arranged on the base, a first nozzle seat is arranged on the outer ring injection pipe, and a first nozzle with a nozzle facing to an air inlet of the outer ring injection pipe is arranged on the first nozzle seat.

In order to realize the rapid mixing of air flow and gas flow into uniform mixed gas in a subsequent outer ring injection pipe, a gas channel and an annular channel which is positioned at the periphery of the gas channel and is not communicated with the gas channel are arranged in the first nozzle seat, the first nozzle is arranged at the gas outlet of the gas channel, an air inlet used for communicating an air blower is arranged on the annular channel, and an air outlet facing the air inlet of the outer ring injection pipe is arranged on the position of the annular channel, which is adjacent to the first nozzle.

In order to enable a plurality of air flows and fuel gas flows to be intersected in the injection pipe to form impact and quickly mix the air flows into uniform mixed gas, at least two air outlets are formed and are arranged at the periphery of the first nozzle at intervals along the circumferential direction.

Preferably, still including furnace end and interior fire lid, the furnace end has the open inner ring passageway in top and is located the peripheral and the open outer ring passageway in top of inner ring passageway, the base sets up the open top department of outer ring passageway, and the annular cavity of this base with outer ring passageway is linked together, the base is being located the inner periphery of annular cavity has the confession inner ring passageway passes from the trompil that upwards passes the inner ring passageway passes under the state of trompil, interior fire lid cover the open top department of inner ring passageway and with the inner ring passageway encloses to close and is formed with inner ring air mixing chamber.

In order to inject mixed gas of air and fuel gas into the inner ring gas mixing chamber, an inner ring channel of the furnace end is connected with an inner ring injection pipe, a second nozzle seat is arranged on the inner ring injection pipe, and a second nozzle of which the nozzle faces the air inlet of the inner ring injection pipe is arranged on the second nozzle seat.

Preferably, the air-mixing device further comprises a mounting plate, wherein the base is positioned on the mounting plate, an air supply channel for secondary air to enter is reserved between the base and the mounting plate, and the air supply channel is communicated with the outer ring air mixing chamber.

Compared with the prior art, the utility model has the advantages of: this a fire lid for cooking utensils combustor goes out the fire passageway through the first passageway and the second of going out that goes out of outside formation at the fire lid, and first passageway and the second of going out of fire goes out the fire passageway and is linked together through the clearance to make the outside of fire lid form the annular flame of continuous distribution, increased with the area of contact of overgrate air, strengthened the burning of flame, the existence in clearance has realized annular flame's steady flame certainly simultaneously, has improved the thermal efficiency.

Drawings

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

FIG. 2 is a schematic view of the structure of FIG. 1 from another angle;

FIG. 3 is a schematic structural view of the lower cover of FIG. 1;

FIG. 4 is a schematic structural view of the upper cover in FIG. 1;

FIG. 5 is a schematic structural diagram of the stove burner of the present embodiment;

FIG. 6 is a cross-sectional view of the first nozzle carrier of FIG. 5;

FIG. 7 is a cross-sectional view of FIG. 5;

fig. 8 is a cross-sectional view of a portion of the structure of fig. 5.

Detailed Description

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

As shown in fig. 1 to 8, the utility model discloses cooking utensils combustor of embodiment is including fire lid, base 3, gather can cover 03, outer loop and draw and penetrate pipe 4, first nozzle holder 5, furnace end 6, interior fire lid 7, inner ring and draw and penetrate pipe 8, second nozzle holder 9 and mounting panel 10, and fire lid wherein is outer fire lid 01.

As shown in fig. 7 and 8, the mounting plate 10 is substantially horizontally disposed, a mounting hole 101 for the burner 6 to pass through is formed in the mounting plate 10 from bottom to top, the burner 6 has an inner ring channel 61 with an open top and an outer ring channel 62 located at the periphery of the inner ring channel 61 and with an open top, the base 3 has an annular cavity 31 with an annular shape and an open top, and the inner ring channel 31 has an opening for the inner ring channel 61 to pass through from bottom to top, and the inner fire cover 7 covers the open top of the inner ring channel 61 and encloses with the inner ring channel 61 to form an inner ring air mixing chamber in a state that the inner ring channel 61 passes through the opening.

As shown in fig. 7, the energy concentrating cover 03 is annular and is disposed on the mounting plate 10 and located on the periphery of the outer fire cover 01. As shown in fig. 7 and 8, the base 3 is disposed at the open top of the outer ring channel 62 and above the mounting plate 10, and an air supply channel E for the secondary air is left between the base 3 and the mounting plate 10. The annular cavity 31 of the base 3 is communicated with the outer ring channel 62, the outer fire cover 01 is placed at the top opening of the annular cavity 31, an outer ring air mixing chamber 32 is formed between the outer fire cover and the annular cavity 31, and the air supplementing channel E is communicated with the outer ring air mixing chamber 32.

As shown in fig. 1 and 2, the outer fire cover 01 of the present embodiment includes a lower cover 1 and an upper cover 2, both of which are ring-shaped, wherein the lower cover 1 is vertically disposed, and the top wall surface of the lower cover 1 gradually inclines upward from inside to outside, the lower groove 11 formed by locally and downwardly recessing the top wall surface of the lower cover 1, the bottom surface of the lower groove 11 is an arc-shaped surface, and the center line of the lower groove 11 gradually inclines upward from inside to outside, so that the lower groove 11 is gradually inclined upward from inside to outside as a whole. The lower grooves 11 are arranged at intervals along the circumferential direction, and an upper protrusion 12 is formed between two adjacent lower grooves 11.

As shown in fig. 4, the upper cover 2 includes a top plate 21 having a ring shape, an inner side edge of the top plate 21 extends downward to form an inner annular wall 23, an outer side edge of the top plate 21 extends downward to form an outer annular wall 22, a bottom surface of the outer annular wall 22 is an inclined surface gradually inclining upward from inside to outside, the inclined surface is partially recessed upward at a position corresponding to the upper protrusion 12 to form an upper groove 222, the upper groove 222 gradually inclines upward from inside to outside, and a top surface of the upper groove 222 is an arc-shaped surface. A lower protrusion 221 is formed between two adjacent upper grooves 222. As shown in fig. 1 and 2, in a state where the upper cover 2 is disposed on the lower cover 1, the lower projections 221 are located in the corresponding lower grooves 11 with a space left between the bottom surfaces of the lower projections 221 and the corresponding lower grooves 11 to form first fire discharge channels a, the upper projections 12 are located in the corresponding upper grooves 222 with a space left between the top surfaces of the upper projections 12 and the corresponding upper grooves 222 to form second fire discharge channels B, and a gap C communicating the first fire discharge channels a with the second fire discharge channels B is left between adjacent lower projections 221 and the upper projections 12. As shown in fig. 1 to 4, the first fire outlet channel a and the second fire outlet channel B are inclined upward from inside to outside, and both the first fire outlet channel a and the second fire outlet channel B are communicated with the outer ring air mixing chamber 32.

In the present embodiment, as shown in fig. 2, the longitudinal cross-sectional area of the first flame discharge passage a is S1, correspondingly, the width of the lower boss 221 in the circumferential direction is L, the area of a circle having the width L as a diameter is S, and the longitudinal cross-sectional area S1 satisfies: 0.5S < S1 < S; the second flame discharge passage B has a longitudinal cross-sectional area S2, a width W of the upper boss 12 in the circumferential direction, and an area S of a circle having the width W as a diameter₀The longitudinal sectional area S2 satisfies: 0.5S₀＜S2＜S₀。

In order to form continuous and evenly distributed annular flames on the outer side of the fire cover, as shown in fig. 1 and 2, at least two adjacent gaps C are provided with fire transfer grooves D, the fire transfer grooves D are formed on the butt joint surface of the upper cover 2 and the lower cover 1, the number of the fire transfer grooves D is four, the fire transfer grooves D are arranged at intervals along the circumferential direction, and the fire transfer grooves D are communicated with the adjacent gaps C.

As shown in fig. 7 and 8, the outer ring ejector pipe 4 is arranged on the burner 6, and is positioned below the mounting plate 10, the outer ring injection pipe 4 is communicated with an outer ring channel 62 of the furnace end 6, the first nozzle seat 5 is arranged on the outer ring injection pipe 4, as shown in fig. 6, the first nozzle holder 5 has a gas channel 51 and an annular channel 52 located at the periphery of the gas channel 51 and not communicated with the gas channel 51, a first nozzle 50 having a nozzle facing the gas inlet of the outer ring ejector pipe 4 is disposed at the gas outlet of the gas channel 51, the first nozzle 50 is communicated with the gas channel 51, an air inlet 521 for communicating with the blower is formed in the annular passage 52, air outlet holes 522 facing the air inlet of the outer ring injection pipe 4 are formed in the position, adjacent to the first nozzle 50, of the annular passage 52, and the number of the air outlet holes 522 is 3, and the air outlet holes are circumferentially arranged at intervals on the periphery of the first nozzle 50.

In addition, as shown in fig. 7 and 8, the inner ring injection pipe 8 is disposed on the burner 6 and below the mounting plate 10, the inner ring injection pipe 8 is communicated with the inner ring channel 61, the inner ring injection pipe 8 is provided with a second nozzle holder 9, and the second nozzle holder 9 is provided with a second nozzle 90 whose nozzle faces the air inlet of the inner ring injection pipe 8.

Claims

1. A fire cover for a stove burner comprises

The lower cover (1) is annular, a plurality of lower grooves (11) which are arranged at intervals along the circumferential direction are formed in the top wall surface of the lower cover, and an upper convex part (12) is formed between every two adjacent lower grooves (11);

the upper cover (2) is annular and is arranged on the lower cover (1), a lower convex part (221) is arranged on the bottom wall surface of the upper cover (2) at a position corresponding to the lower groove (11), and an upper groove (222) is arranged at a position corresponding to the upper convex part (12);

the method is characterized in that: when the upper cover (2) is arranged on the lower cover (1), the lower convex part (221) is positioned in the corresponding lower groove (11), a gap is reserved between the bottom surface of the lower convex part (221) and the corresponding lower groove (11) to form a first fire outlet channel (A), the upper convex part (12) is positioned in the corresponding upper groove (222), a gap is reserved between the top surface of the upper convex part (12) and the corresponding upper groove (222) to form a second fire outlet channel (B), and a gap (C) communicated with the first fire outlet channel (A) and the second fire outlet channel (B) is reserved between the adjacent lower convex part (221) and the upper convex part (12).

2. The fire cover of claim 1, wherein: the first fire outlet channel (A) and the second fire outlet channel (B) are both gradually inclined upwards from inside to outside.

3. The fire cover of claim 2, wherein: the top wall surface of the lower cover (1) gradually inclines upwards from inside to outside, the top wall surface of the lower cover (1) is locally downwards sunken to form the lower groove (11), the lower groove (11) gradually inclines upwards from inside to outside, the upper cover (2) comprises an annular top plate (21), the outer edge of the top plate (21) downwards extends to form an outer annular wall (22), the bottom surface of the outer annular wall (22) is an inclined surface gradually inclining upwards from inside to outside, the inclined surface is locally upwards sunken to form the upper groove (222), and the upper groove (222) gradually inclines upwards from inside to outside.

4. The fire cover of claim 3, wherein: the bottom surface of the lower groove (11) and the top surface of the upper groove (222) are both arc-shaped surfaces.

5. The fire cover of claim 4, wherein: the first flame-out passage (A) has a longitudinal cross-sectional area S1, the lower protrusion (221) has a width L in the circumferential direction, and a circle having the width L as the diameter has an area S, and the longitudinal cross-sectional area S1 satisfies: 0.5S < S1 < S; the second flame discharge passage (B) has a longitudinal cross-sectional area of S2, the upper protrusion (12) has a width W in the circumferential direction, and the circle having the width W as the diameter has an area S₀The longitudinal sectional area S2 satisfies: 0.5S₀＜S2＜S₀。

6. A fire cover according to any one of claims 1 to 5, wherein: at least two adjacent gaps (C) are provided with fire transmission grooves (D) which are communicated with the adjacent gaps (C).

7. The fire cover of claim 6, wherein: the number of the fire transmission grooves (D) is at least two, and the fire transmission grooves (D) are arranged at intervals along the circumferential direction.

8. A cooktop burner with a fire cover of any of claims 1 to 7, characterized in that: including base (3), have on base (3) and be annular and open-topped annular cavity (31), the fire lid is outer fire lid (01), outer fire lid (01) shelve the open-topped department of annular cavity (31) and with be formed with between annular cavity (31) with first play fire passageway (A) and second play fire passageway (B) outer ring gas mixing chamber (32) that are linked together.

9. The cooktop burner of claim 8, wherein: the outer ring injection pipe (4) is communicated with the outer ring air mixing chamber (32), a first nozzle seat (5) is arranged on the outer ring injection pipe (4), and a first nozzle (50) with a nozzle facing the air inlet of the outer ring injection pipe (4) is arranged on the first nozzle seat (5).

10. The cooktop burner of claim 9, wherein: the first nozzle seat (5) is internally provided with a gas channel (51) and an annular channel (52) which is positioned at the periphery of the gas channel (51) and is not communicated with the gas channel (51), the first nozzle (50) is arranged at the gas outlet of the gas channel (51), the annular channel (52) is provided with a gas inlet (521) used for communicating with a blower, and the annular channel (52) is provided with a gas outlet hole (522) facing the gas inlet of the outer ring injection pipe (4) at the position adjacent to the first nozzle (50).

11. The cooktop burner of claim 10, wherein: the number of the air outlet holes is at least two, and the air outlet holes are arranged on the periphery of the first nozzle at intervals along the circumferential direction.

12. The cooktop burner of claim 10, wherein: still including furnace end (6) and interior fire lid (7), furnace end (6) have open-top inner ring passageway (61) and are located the periphery of inner ring passageway (61) and open-top outer ring passageway (62), base (3) set up the open-top department of outer ring passageway (62), and annular cavity (31) of this base (3) with outer ring passageway (62) are linked together, base (3) are lieing in the interior of annular cavity (31) encloses the trompil that supplies inner ring passageway (61) are passed from bottom to top inner ring passageway (61) pass under the state of trompil, interior fire lid (7) cover the open-top department of inner ring passageway (61) and with inner ring passageway (61) enclose to form the inner ring air mixing chamber.

13. The cooktop burner of claim 12, wherein: the inner ring channel (61) of the furnace end (6) is connected with an inner ring injection pipe (8), a second nozzle seat (9) is arranged on the inner ring injection pipe (8), and a second nozzle (90) with a nozzle facing the air inlet of the inner ring injection pipe (8) is arranged on the second nozzle seat (9).

14. The cooktop burner of claim 12, wherein: still including mounting panel (10), base (3) are located on mounting panel (10), and with leave tonifying qi passageway (E) that supplies the secondary air to get into between mounting panel (10), tonifying qi passageway (E) with outer loop gas mixing chamber (32) are linked together.