CN214009215U - Fire cover for stove burner and stove burner - Google Patents

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 shunt part which is annular; the fire cover body is annular and at least partially covers the flow dividing piece, a cavity is formed between the fire cover body and the flow dividing piece, and a fire outlet is formed in the fire cover body; the method is characterized in that: the flow divider is including the inner annular wall, be provided with two at least along circumference interval arrangement and be located on the periphery wall of inner annular wall go out the air guide duct under the fire hole, adjacent two be formed with between the air guide duct with the cavity is linked together, the air guide duct is in relative horizontal plane slope sets up on the inner annular wall circumferencial direction or the radial direction, thereby makes the air guide duct presents clockwise or anticlockwise rotation direction arrangement on the whole. The setting of water conservancy diversion piece for the air current in the cavity of fire lid is more even, has reduced the energy loss of heat of combustion, is favorable to follow-up thermal efficiency that improves.

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, in order to solve the above technical problems, a splitter plate is usually arranged at the air outlet of the ba nan district to reduce the gas mixing pressure at the air outlet, for example, in the chinese utility model patent "comprehensive air inlet burner", the patent number is ZL200920236836.6 (No. CN201547778U), which discloses a comprehensive air inlet burner, comprising a burner seat, a splitter cover seat, an inner fire division cover and an outer fire division cover, the burner seat is provided with an inner fire air inlet pipe and an outer fire air inlet pipe, the inner fire air inlet pipe is provided with a nozzle, the gas outlet channel connects the outer injection pipe with an outer ring gas tank, the outer ring gas tank is provided with a pressure reducing splitter plate, the pressure reducing splitter plate is provided with a plurality of pressure reducing splitter holes, and the pressure reducing splitter plate is arranged above the gas outlet of the gas outlet channel. As another example, the chinese patent application of the invention discloses a vertical multiple injection pipe type three-ring fire burner, whose patent application number is CN201811106986.5 (application publication number is CN109237475A), which discloses a vertical multiple injection pipe type three-ring fire burner, wherein an annular flow-dividing and flow-equalizing plate is arranged in an outer ring gas tank, and a plurality of flow-guiding holes and connecting holes are arranged on the annular flow-dividing and flow-equalizing plate; the bottom plate of the outer ring gas tank is provided with a plurality of supporting columns, the supporting columns support the circular flow dividing and equalizing plate, and screws penetrate through the connecting holes to be screwed with the supporting columns.

The combustor among the above-mentioned comparison document can reduce gas pressure through setting up the flow distribution plate, nevertheless because the equal vertical upwards of gas outlet, the gas is all direct flows to the flow distribution plate top from decompression flow distribution hole (air guide hole) is vertical upwards, is unfavorable for gas evenly distributed in the flow distribution plate top, leads to giving vent to anger evenly inadequately, and in addition, the vertical setting that upwards of gas outlet is unfavorable for improving the combustion efficiency of combustor.

Accordingly, further improvements to existing fire covers are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem to provide a make gas and air mixing more even fire lid that is used for cooking utensils combustor to the current situation of above-mentioned prior art.

The second technical problem to be solved by the present invention is to provide a stable fire cover with enhanced flame combustion.

The third 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 flow dividing piece is annular;

the fire cover body is annular and at least partially covers the flow dividing piece, a cavity is formed between the fire cover body and the flow dividing piece, and a fire outlet is formed in the fire cover body;

the method is characterized in that: the flow divider is including the inner annular wall, be provided with two at least along circumference interval arrangement and be located on the periphery wall of inner annular wall go out the air guide duct under the fire hole, adjacent two be formed with between the air guide duct with the cavity is linked together, the air guide duct is in relative horizontal plane slope sets up on the inner annular wall circumferencial direction or the radial direction, thereby makes the air guide duct presents clockwise or anticlockwise rotation direction arrangement on the whole.

In order to improve the heat efficiency, the fire cover body comprises a top plate in an annular shape, the inner annular wall of the flow dividing piece is vertically arranged, and a gap is formed between the inner annular wall and the inner periphery of the top plate, which is adjacent to the inner periphery, so that a fire gap is formed. The existence of the fire gap enables the inner side of the fire cover body to form rotary flame, and the improvement of the heat efficiency is facilitated.

In order to increase the contact area between the fire flame and the bottom of the cooker, the inner flow passage of the fire outlet gap is gradually inclined upwards from outside to inside.

There are various forms for realizing the fire gap, but it is preferable that the top surface of the inner ring wall has a guide surface inclined upward gradually from outside to inside, the inner peripheral surface of the top plate is inclined upward gradually from outside to inside, the guide surface is provided with support portions for supporting the inner peripheral surface of the top plate so as to form the fire gap between the inner ring wall and the top plate, and the support portions are inclined upward gradually from outside to inside and are arranged at least two and circumferentially spaced apart.

In order to improve the uniformity of the air flow in the fire cover cavity, the fire cover body comprises an upper cover and a lower cover which are all annular, the lower cover is vertically arranged, the upper cover comprises a top plate, a fire outlet hole is formed between the bottom wall surface of the top plate and the top wall surface of the lower cover, and the outer side edge of the flow deflector is in contact with the inner circumferential surface of the lower cover. In addition, the fire cover body adopts the form of components of parts, conveniently clears up the fire cover body.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the bottom wall surface of the top plate is provided with a plurality of upper grooves which are arranged at intervals along the circumferential direction at the position adjacent to the outer peripheral edge, a lower convex part is formed between every two adjacent upper grooves, the top wall surface of the lower cover is provided with an upper convex part at the position corresponding to the upper groove and a lower groove at the position corresponding to the lower convex part, when the upper cover is arranged on the lower cover, the lower convex part is positioned in the corresponding lower groove, a gap is left 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, and 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, the fire outlet hole comprises the first fire outlet channel and the second fire outlet channel, and a gap communicated with 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 protrusion, the upper groove, the lower protrusion 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 locally recessed downwards to form the lower groove, the lower groove gradually inclines upwards from inside to outside, 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 locally 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.

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.

The utility model provides a technical scheme that above-mentioned third technical problem adopted does: the utility model provides a cooking utensils combustor with foretell fire lid which characterized in that: the 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 fire cover and the annular cavity.

Compared with the prior art, the utility model has the advantages of: the flow deflector of the fire cover for the stove burner is arranged, so that air flow in a cavity of the fire cover is more uniform, energy loss of combustion heat is reduced, and subsequent heat efficiency improvement is facilitated; in addition, the existence of the flow deflector can enable the fire outlet gap to form rotating flame, thereby further improving the heat efficiency; in addition, through the setting of first passageway and second passageway for the outside of fire lid forms the annular flame of continuous distribution, has increased the area of contact with the overgrate air, has strengthened the burning of flame, and the existence in clearance has realized annular flame's self-stabilization flame 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 perspective exploded view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic structural view of the flow divider of FIG. 1;

FIG. 5 is a schematic structural view of the fire lid body of FIG. 1;

FIG. 6 is a schematic view of the structure of FIG. 5 at another angle;

FIG. 7 is a schematic structural view of the upper cover of FIG. 5;

FIG. 8 is a schematic structural diagram of the stove burner of the present embodiment;

FIG. 9 is a cross-sectional view of FIG. 8;

FIG. 10 is a cross-sectional view of a portion of the structure of FIG. 8;

fig. 11 is a sectional view of the first nozzle holder.

Detailed Description

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

As shown in fig. 1 to 11, 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. 8 and 9, the mounting plate 10 is substantially horizontally disposed, a mounting hole 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. 9, 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. The fire cover is placed at the open top of the annular cavity 31, an outer ring air mixing chamber is formed between the fire cover and the annular cavity 31, and the air supplementing channel E is communicated with the outer ring air mixing chamber.

As shown in fig. 1 to 3, the fire cover of the present embodiment includes a flow divider 01 and a fire cover body 02, both the flow divider 01 and the fire cover body 02 are annular, the fire cover body 02 at least partially covers the flow divider 01, and a cavity is formed between the fire cover body and the flow divider 01. As shown in fig. 5 and 6, the fire lid body 02 includes a lower lid 1 and an upper lid 2, both of which are annular, and the fire lid body 02 is in the form of a separate piece, which is convenient for cleaning. As shown in fig. 2, 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 recessing the top wall surface of the lower cover 1 downward, the bottom surface of the lower groove 11 is an arc-shaped surface, and the lower groove 11 gradually inclines upward from inside to outside. 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. 7, 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 side wall plate 23 having a ring shape, 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. 5 and 6, 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. 2, 7 and 9, the first fire outlet channel a and the second fire outlet channel B are both 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. The first fire outlet channel A and the second fire outlet channel B are fire outlet holes of the fire cover body 02.

As shown in fig. 6, 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 the 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. 6, 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. 1 to 4, the flow divider 01 includes an inner annular wall 011 vertically disposed, the inner annular wall 011 is located at an inner periphery of the lower cover 1, a cross section of the inner annular wall 011 is circular, at least two flow deflectors 012 circumferentially spaced and located below the fire hole are disposed on an outer peripheral wall of the inner annular wall 011, outer edges of the flow deflectors 012 contact with an inner peripheral surface of the lower cover 1, an air guide channel 013 communicated with the cavity is formed between two adjacent flow deflectors 012, the flow deflectors 012 are inclined with respect to a horizontal plane in a circumferential direction or a radial direction of the inner annular wall 011, and an included angle between each flow deflector 012 and the horizontal plane is the same, so that the flow deflectors 012 are arranged in a clockwise or counterclockwise rotation direction as a whole.

As shown in fig. 2 to 4, the inner annular wall 011 of the flow divider 01 is spaced apart from the top plate 21 near the inner periphery to form a fire gap 04, and the inner flow path of the fire gap 04 is inclined upward from the outside to the inside. Specifically, as shown in fig. 2, the top surface of the inner annular wall 011 has a guide surface 0111 inclined upward gradually from the outside to the inside, the inner peripheral surface of the top plate 21 is inclined upward gradually from the outside to the inside, the guide surface 0111 is provided with support portions 014 for supporting the inner peripheral surface of the top plate 21 so as to form fire gaps 04 between the inner annular wall 011 and the top plate 21, and the support portions 014 are inclined upward gradually from the outside to the inside and are arranged at least two and circumferentially at intervals.

As shown in fig. 8, the energy concentrating cover 03 is annular and is provided on the mounting plate 10 and located on the periphery of the fire cover body 02. As shown in fig. 8 to 10, 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. 10, the first nozzle holder 5 has a gas channel 51 and an annular channel 52 disposed 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 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 the 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 gas 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 flow ring ejector tube, forming impact to quickly mix into uniform mixed gas.

In addition, as shown in fig. 10, 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.

In the above embodiment, the entire burner discharges fire through the inner fire cover, the fire outlet gap and the first fire outlet channel and the second fire outlet channel of the outer fire cover, i.e. the inner, middle and outer three-ring fire is formed, the heating of the cooker (such as a pot) is more uniform, the comprehensive fire power deviates to the axis position, and the thermal efficiency for heating the bottom of the pot is higher. The arrangement of the flow deflectors can improve the uniformity of air flow in the fire cover cavity, and can form rotating flame at a fire outlet gap to form self-stabilized flame, thereby being beneficial to the improvement of heat efficiency.

Claims (11)

1. A fire cover for a stove burner comprises

A flow divider (01) in the shape of a ring;

the fire cover body (02) is annular and at least partially covers the flow dividing piece (01), a cavity is formed between the fire cover body and the flow dividing piece (01), and a fire outlet is formed in the fire cover body (02);

the method is characterized in that: the flow divider (01) is including interior rampart (011), be provided with two at least on the periphery wall of interior rampart (011) along circumference interval arrangement and be located guide plate (012) under the fire outlet hole, adjacent two be formed with between guide plate (012) with air guide channel (013) that the cavity is linked together, guide plate (012) are in relative horizontal plane slope sets up on interior rampart (011) circumferential direction or the radial direction, thereby makes guide plate (012) present clockwise or anticlockwise to arrange soon on the whole.

2. The fire cover of claim 1, wherein: the fire cover body (02) comprises an annular top plate (21), an inner annular wall (011) of the flow dividing piece (01) is vertically arranged, and an interval is formed between the inner annular wall (011) and the top plate (21) at the position close to the inner periphery to form a fire outlet gap (04).

3. The fire cover of claim 2, wherein: the inner flow channel of the fire outlet gap (04) is gradually inclined upwards from outside to inside.

4. A fire cover according to claim 2 or 3, wherein: the top surface of the inner ring wall (011) is provided with a guide surface (0111) which gradually inclines upwards from outside to inside, the inner circumferential surface of the top plate (21) gradually inclines upwards from outside to inside, the guide surface (0111) is provided with a support portion (014) which is used for supporting the inner circumferential surface of the top plate (21) so as to enable the inner ring wall (011) and the top plate (21) to form the fire outlet gap (04), the support portion (014) gradually inclines upwards from outside to inside, and at least two of the support portions are arranged at intervals along the circumferential direction.

5. The fire cover of claim 2, wherein: the fire cap body (02) comprises an upper cover (2) and a lower cover (1) which are annular, the lower cover (1) is vertically arranged, the upper cover (2) comprises a top plate (21), a fire outlet is formed between the bottom wall surface of the top plate (21) and the top wall surface of the lower cover (1), and the outer side edge of a flow deflector (012) is in contact with the inner circumferential surface of the lower cover (1).

6. The fire cover of claim 5, wherein: the bottom wall surface of the top plate (21) is provided with a plurality of upper grooves (222) which are arranged at intervals along the circumferential direction at a position adjacent to the outer peripheral edge, a lower convex part (221) is formed between two adjacent upper grooves (222), the top wall surface of the lower cover (1) is provided with an upper convex part (12) at a position corresponding to the upper grooves (222) and is provided with a lower concave groove (11) at a position corresponding to the lower convex part (221), in the state that the upper cover (2) is arranged on the lower cover (1), the lower convex part (221) is positioned in the lower concave groove (11), a space is reserved between the bottom surface of the lower convex part (221) and the lower concave groove (11) to form a first fire outlet channel (A), the upper convex part (12) is positioned in the corresponding upper groove (222), and a space 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), the fire outlet hole comprises a first fire outlet channel (A) and a second fire outlet channel (B), and is adjacent to a gap (C) which is used for communicating the first fire outlet channel (A) and the second fire outlet channel (B) and is reserved between the lower convex part (221) and the upper convex part (12).

7. The fire cover of claim 6, wherein: the first fire outlet channel (A) and the second fire outlet channel (B) are both gradually inclined upwards from inside to outside.

8. The fire cover of claim 7, wherein: the top wall surface of the lower cover (1) gradually inclines upwards from inside to outside, the lower groove (11) is formed in the top wall surface of the lower cover (1) in a locally downward sunken mode, the lower groove (11) gradually inclines upwards from inside to outside, the outer edge of the top plate (21) extends downwards to form an outer ring wall (22), the bottom surface of the outer ring wall (22) is an inclined surface gradually inclining upwards from inside to outside, the upper groove (222) is formed in the locally upward sunken mode of the inclined surface, and the upper groove (222) gradually inclines upwards from inside to outside.

9. The fire cover of claim 8, wherein: the bottom surface of the lower groove (11) and the top surface of the upper groove (222) are both arc-shaped surfaces.

10. The fire cover of claim 5, wherein: at least two adjacent gaps (C) are provided with fire transmission grooves (D) which are communicated with the adjacent gaps (C).

11. A cooktop burner with a fire cover of any of claims 1 to 10, characterized in that: the fire cover is characterized by comprising 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 placed at the open top of the annular cavity (31) and an outer annular gas mixing chamber communicated with the first fire outlet channel (A) and the second fire outlet channel (B) is formed between the fire cover and the annular cavity (31).

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