CN214009216U

CN214009216U - Fire cover for stove burner and stove burner

Info

Publication number: CN214009216U
Application number: CN202022218772.6U
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: 2021-08-20
Anticipated expiration: 2030-09-30

Abstract

The utility model relates to a fire lid and cooking utensils combustor for cooking utensils combustor, a fire lid for cooking utensils combustor is including being annular roof, and the vertical or slope downwardly extending of inboard edge of roof is formed with the inner ring wall, and the vertical or slope downwardly extending of the outside edge of roof has outer rampart, and roof, inner ring wall and outer rampart are formed with mixed gas chamber, its characterized in that jointly: the outer ring wall is provided with a plurality of fire outlet hole groups which are arranged along the circumferential direction and communicated with the gas mixing cavity, each fire outlet hole group comprises a first fire outlet channel and a second fire outlet channel, and the central line of the first fire outlet channel and the central line of the second fire outlet channel in each fire outlet hole group are crossed at the inner peripheral edge far away from the top wall. When the fire goes out, the flame sprayed out through the first fire outlet channel and the second fire outlet channel is opposite-rushed and intersected at the outer side of the fire cover to form flame sprayed out by a large-size fire hole, the flow speed and the temperature of the large flame generated by opposite-rushing are higher, the convection heat exchange of a cooker positioned on the fire cover can be enhanced, and the heat efficiency is improved.

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

The gas mixing pressure at the gas outlet of the gas outlet channel of the existing burner is high, the gas outlet of the fire hole of the fire cover is uneven, particularly, yellow fire, flame separation, fire dropping and the like are easily generated on the fire hole adjacent to the gas outlet, so that the flame distribution of the fire cover is uneven, and the gas combustion is insufficient. In addition, the injection capacity and the mixing of air and gas can directly influence the combustion efficiency of the cooker burner, and the insufficient injection and gas mixing capacity can lead to the lower combustion efficiency and the overhigh smoke, thereby being not beneficial to energy conservation and environmental protection.

At present, as the Chinese utility model patent of upper air intake gas cooker burner, the patent number ZL200620060802.2 (No. CN2916396Y) discloses an upper air intake gas cooker burner, which comprises an outer fire cover, an outer fire cover seat, a chassis and a furnace end with an injection pipe, wherein the outer fire cover, the outer fire cover seat, the chassis and the furnace end are sequentially arranged from top to bottom, the burner is characterized in that the chassis and the annular outer ring gas mixing groove on the furnace end form a first gas mixing cavity, the annular outer fire cover and the outer ring gas mixing groove of the outer fire cover seat form a second gas mixing cavity, fire holes of the outer fire cover are divided into an inner ring and an outer ring, the outer ring fire holes are circular and are uniformly distributed on the outer fire cover, and the inner ring fire holes are in the shape of a bar or a groove and are uniformly distributed on the inner side of the outer fire cover. When the outer ring fire cover in the patent realizes heavy load fire, the size of the fire outlet hole needs to be increased to improve the heat efficiency, and the large fire outlet hole is easy to cause natural gas flame-out and liquefied gas flameout and detonation.

Accordingly, further improvements to existing fire covers are needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve is to above-mentioned prior art's current situation, provides an improve convection heat transfer in order to reach the fire lid that is used for cooking utensils combustor of increasing the thermal efficiency purpose.

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 an annular top wall, wherein an inner annular wall is formed by vertically or obliquely extending downwards the inner edge of the top wall, an outer annular wall is formed by vertically or obliquely extending downwards the outer edge of the top wall, and a gas mixing cavity is formed by the top wall, the inner annular wall and the outer annular wall together, and the fire cover is characterized in that: the outer ring wall is provided with a plurality of fire outlet hole groups which are arranged along the circumferential direction and communicated with the gas mixing cavity, each fire outlet hole group comprises a first fire outlet channel and a second fire outlet channel, and the central line of the first fire outlet channel and the central line of the second fire outlet channel in each fire outlet hole group are intersected at the inner peripheral edge far away from the top wall.

Preferably, in two adjacent sets of said fire outlet groups, the centre lines of adjacent first and second fire outlet channels intersect adjacent the inner periphery of said top wall.

In order to improve the anti-blocking effect, in two adjacent groups of fire outlet hole groups, the adjacent first fire outlet channels and the adjacent second fire outlet channels are mutually converged and share one inlet. So, first fire channel and second fire channel meet in the inboard looks, and at this moment, the import size of inboard is big, and the first fire channel in the outside and the fire outlet of second fire channel are less, and the first fire channel of flash is difficult to block up first fire channel and second fire channel, and anti-blocking performance is good.

Preferably, each of the first fire outlet channels and each of the second fire outlet channels are inclined upwards gradually from inside to outside, so that the center lines of the first fire outlet channels and the second fire outlet channels are formed into the turning directions along the circumferential direction on the whole, and the turning directions of the center lines are opposite.

In order to facilitate fire transfer, the fire outlets of the fire outlet hole groups are all arranged on the outer wall surface of the outer ring wall, the outer wall surface of the outer ring wall is inwards recessed at a position below the fire outlets to form annular grooves extending along the circumferential direction, and the annular grooves are communicated with the first fire outlet channel and the second fire outlet channel.

In order to realize the communication between the air mixing cavity and the annular groove, the outer annular wall is provided with a through hole for communicating the air mixing cavity and the annular groove. Thus, the fire is convenient to transfer stably.

Further preferably, each group of fire outlet hole groups has two through holes, and the through holes are positioned between the first fire outlet channel and the second fire outlet channel of the fire outlet hole group.

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-fighting device comprises a base, wherein an annular cavity which is annular and has an open top is arranged on the base, the fire cover is an outer ring fire cover, the outer ring fire cover is placed at the open top of the annular cavity and an outer ring gas mixing chamber communicated with the first fire outlet channel and the second fire outlet channel is formed between the outer ring fire cover and the annular cavity.

In order to inject the mixed gas of air and fuel gas into the outer ring gas mixing chamber, the gas mixing chamber further comprises an outer ring injection pipe communicated with the outer ring gas mixing chamber, 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.

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.

Compared with the prior art, the utility model has the advantages of: a central line that is used for first passageway and the second of going out of on the outer rampart of fire lid of cooking utensils combustor goes out fire passageway and the crossing of second passageway of going out outside fire lid, when going out fire, the flame that goes out fire passageway and second and goes out fire passageway spun is opposite-blow in the outside of fire lid and is intersected and form the flame of similar jumbo size fire hole spun, and the velocity of flow and the temperature of the big flame that the opposite-blow produced are higher, can strengthen the convection heat transfer of the pan that is located above the fire lid to the thermal efficiency is improved.

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 cross-sectional view of FIG. 2;

FIG. 4 is a cross-sectional view of FIG. 1;

fig. 5 is a sectional view of the cooktop burner of the present embodiment;

FIG. 6 is a partial structural schematic view of the stove burner of the present embodiment;

FIG. 7 is a cross-sectional view of a first nozzle carrier;

fig. 8 is a cross-sectional view of fig. 6.

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.

As shown in fig. 5, 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 an opening for the inner ring channel 61 to pass through from bottom to top is located at the inner periphery of the annular cavity 31, and the inner fire cover 7 covers the open top of the inner ring channel 61 and forms an inner ring air mixing chamber with the inner ring channel 61 in a surrounding manner when the inner ring channel 61 passes through the opening.

As shown in fig. 5 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 communicates with the outer annular passage 62. As shown in fig. 5 and 6, the fire cover is an outer ring fire cover 01, the outer ring 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 ring fire cover 01 and the annular cavity 31, and the air supply channel E is communicated with the outer ring air mixing chamber 32. The energy collecting cover 03 of the present embodiment is annular and is disposed on the mounting plate 10 and located on the periphery of the fire cover body 02.

As shown in fig. 2, the outer ring fire cover 01 includes a ring-shaped top wall 1, an inner ring wall 11 is formed by extending the inner edge of the top wall 1 vertically or obliquely downward, an outer ring wall 12 is formed by extending the outer edge of the top wall 1 vertically or obliquely downward, and a gas mixing cavity 10 is formed by the top wall 1, the inner ring wall 11 and the outer ring wall 12 together.

As shown in fig. 1 to 4, the outer annular wall 12 is provided with a plurality of fire outlet groups 2 which are sequentially arranged along the circumferential direction and are communicated with the gas mixing chamber 10, each fire outlet group 2 includes a first fire outlet channel 121 and a second fire outlet channel 122, as shown in fig. 4, the central line of the first fire outlet channel 121 and the central line of the second fire outlet channel 122 in each fire outlet group 2 intersect at the inner peripheral edge far away from the top wall 1, that is, intersect at the outer side of the outer annular fire cover. When the fire goes out, the flame sprayed out through the first fire outlet channel 121 and the second fire outlet channel 122 is opposite rushed to intersect at the outer side of the outer ring fire cover to form flame sprayed out from a large-size fire hole, the flow speed and the temperature of the flame generated by opposite rushing are higher, the convection heat transfer of a pot on the fire cover can be enhanced, and therefore the heat efficiency is improved.

In the present embodiment, as shown in fig. 4, the centerline of the first fire discharging passage 121 is a, and the centerline of the second fire discharging passage 122 is B. Each first fire discharging passage 121 is gradually inclined upwards from inside to outside, so that the center line of the first fire discharging passage 121 forms a spiral direction along the circumferential direction on the whole, each second fire discharging passage 122 is gradually inclined upwards from inside to outside, so that the center line of the second fire discharging passage 122 forms a spiral direction along the circumferential direction on the whole, and the spiral direction of the center line of the first fire discharging passage 121 on the whole is opposite to that of the center line of the second fire discharging passage 121 on the whole.

One first fire outlet channel 121 is arranged between any two adjacent second fire outlet channels 122. In two adjacent groups of fire holes 2, the center lines of the adjacent first fire outlet channels 121 and second fire outlet channels 122 intersect adjacent to the inner periphery of the top wall 1. Specifically, as shown in fig. 4, in two adjacent groups of fire outlet holes 2, the adjacent first fire outlet channels 121 and the adjacent second fire outlet channels 122 meet to share one inlet 12 a. When the first fire outlet channel 121 and the second fire outlet channel 122 are converged at the inner side, at the moment, the size of the inlet at the inner side is large, the fire outlets of the first fire outlet channel and the second fire outlet channel at the outer side are smaller, and when overflowing flows in through the fire outlets of the first fire outlet channel 121 and the second fire outlet channel 122, the inlet is not easily blocked, and the anti-blocking performance is good.

As shown in fig. 1 and 2, the fire outlets 12b of the fire outlet group 2 are each opened on the outer wall surface of the outer annular wall 12, and as shown in fig. 1 and 4, the outer wall surface of the outer annular wall 12 is recessed inwardly at a position below the fire outlet 12b to form an annular groove 123 extending in the circumferential direction, and the annular groove 123 communicates with the first fire outlet passage 121 and the second fire outlet passage 122. The outer annular wall 12 is provided with through holes 124 for communicating the air mixing chamber 10 with the annular groove 123, in the embodiment, as shown in fig. 2, there are two through holes 124 corresponding to each group of fire holes 2, and the through holes 124 are located between the first fire channel 121 and the second fire channel 122 of the fire hole group 2.

As shown in fig. 6, the outer ring ejector tube 4 is disposed on the burner 6 and below the mounting plate 10, the outer ring ejector tube 4 is communicated with an outer ring channel 62 of the burner 6, the first nozzle holder 5 is disposed on the outer ring ejector tube 4, as shown in fig. 7, the first nozzle holder 5 has a gas channel 51 and an annular channel 52 disposed on 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 tube 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 a blower is disposed on the annular channel 52, an air outlet 522 facing the gas inlet of the outer ring ejector tube 4 is disposed at a position adjacent to the first nozzle 50 in the

annular channel

52, 3 air outlets 522 are circumferentially spaced at the periphery of the

first nozzle

50, 3 air flows flowing out through the 3 air outlets intersect with the gas flow in the outer ring ejector tube, forming impact to quickly mix into uniform mixed gas.

As shown in fig. 6 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 having a nozzle facing the air inlet of the inner ring injection pipe 8.

Claims

1. A fire cover for a stove burner comprises an annular top wall (1), wherein an inner side edge of the top wall (1) vertically or obliquely extends downwards to form an inner annular wall (11), an outer side edge of the top wall (1) vertically or obliquely extends downwards to form an outer annular wall (12), and the top wall (1), the inner annular wall (11) and the outer annular wall (12) jointly form a gas mixing cavity (10), and is characterized in that: the outer ring wall (12) is provided with a plurality of fire outlet hole groups (2) which are arranged along the circumferential direction and communicated with the gas mixing cavity (10), each fire outlet hole group (2) comprises a first fire outlet channel (121) and a second fire outlet channel (122), and the central line of the first fire outlet channel (121) and the central line of the second fire outlet channel (122) in each fire outlet hole group (2) are crossed at the inner peripheral edge far away from the top wall (1).

2. The fire cover of claim 1, wherein: in two adjacent groups of the fire hole groups (2), the center lines of the adjacent first fire outlet channel (121) and the second fire outlet channel (122) are crossed at the position adjacent to the inner periphery of the top wall (1).

3. The fire cover of claim 2, wherein: in two adjacent groups of the fire outlet hole groups (2), the adjacent first fire outlet channels (121) and the second fire outlet channels (122) are converged to share one inlet (12 a).

4. The fire cover of claim 2, wherein: each first fire outlet channel (121) and each second fire outlet channel (122) are gradually inclined upwards from inside to outside, so that the central line of the first fire outlet channel (121) and the central line of the second fire outlet channel (122) form a turning direction along the circumferential direction on the whole, and the turning directions of the first fire outlet channel and the second fire outlet channel are opposite.

5. The fire cover of claim 1, wherein: the fire outlets (12b) of the fire outlet hole group (2) are all arranged on the outer wall surface of the outer ring wall (12), the outer wall surface of the outer ring wall (12) is inwards recessed at a position below the fire outlets (12b) to form an annular groove (123) extending along the circumferential direction, and the annular groove (123) is communicated with the first fire outlet channel (121) and the second fire outlet channel (122).

6. The fire cover of claim 5, wherein: the outer annular wall (12) is provided with a through hole (124) which is communicated with the air mixing cavity (10) and the annular groove (123).

7. The fire cover of claim 6, wherein: two through holes (124) are correspondingly arranged in each group of fire outlet groups (2), and the through holes (124) are positioned between the first fire outlet channel (121) and the second fire outlet channel (122) of the fire outlet group (2).

8. A cooktop burner with a fire cover of any of claims 1 to 7, characterized in that: the fire-fighting device comprises a base (3), wherein an annular cavity (31) which is annular and has an open top is arranged on the base (3), the fire cover is an outer ring fire cover (01), the outer ring fire cover (01) is placed at the open top of the annular cavity (31) and an outer ring gas mixing chamber communicated with the first fire outlet channel (121) and the second fire outlet channel (122) is formed between the outer ring fire cover (01) and the annular cavity (31).

9. The cooktop burner of claim 8, wherein: the outer ring injection pipe (4) communicated with the outer ring gas mixing chamber is further included, 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: 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 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 and has the confession inner ring passageway (61) trompil (33) that upwards passed from bottom inner ring passageway (61) pass under the state of trompil (33), interior fire lid (7) cover the open-top of inner ring passageway (61) and with inner ring passageway (61) enclose and form inner ring air mixing chamber.

12. The cooktop burner of claim 11, 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).