CN214172224U - Furnace end, combustor and gas cooking utensils - Google Patents

Abstract

The utility model discloses a furnace end, combustor and gas cooking utensils, wherein, the furnace end includes: the core extracting device comprises a head part, a gas inlet and a gas outlet, wherein the head part is provided with a first gas cavity and a first core extracting opening, and the first core extracting opening is used for extracting a core in the head part so as to communicate the first core extracting opening with the first gas cavity; a mounting cover detachably connected to the head; and the first injection pipe is connected with the mounting cover, a second core pulling port for the core to be pulled out from the first injection pipe is arranged on the mounting cover, and the first core pulling port is communicated with the second core pulling port when the mounting cover is arranged on the head. The utility model realizes core pulling from the head part through the first core pulling port to form a channel for communicating the first injection pipe with the first gas cavity; realize the shaping of loosing core of first injection pipe through second core-pulling mouth, through can dismantling the installation lid with the head and be connected, realize the components of a whole that can function independently preparation of head and first injection pipe, reduce the cost of manufacture.

Description

Furnace end, combustor and gas cooking utensils

Technical Field

The utility model relates to a kitchen appliance field, in particular to furnace end, combustor and gas cooking utensils.

Background

In the existing burner, in order to facilitate installation of the dry-burning prevention sensor, a through hole is formed in the middle of the burner, so that the sensor penetrates through the through hole and abuts against the bottom surface of a pot. Due to the structural limitation of the combustor, when the furnace end of the combustor is molded, the core pulling of the furnace end is difficult, so that the processing difficulty of the furnace end is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a furnace end, combustor and gas cooking utensils, aim at improving the current furnace end that is used for installing to prevent dry combustion method sensor problem of the difficulty of loosing core.

In order to achieve the above object, the utility model provides a furnace end, the furnace end includes:

the head part is provided with a first gas cavity and a first core pulling port, the first core pulling port is communicated with the first gas cavity, and the first gas cavity and the first core pulling port are formed through a core pulling process respectively;

a mounting cover detachably connected to the head; and

the first injection pipe is connected with the mounting cover, a second core pulling port for the core to be pulled out from the first injection pipe is arranged on the mounting cover, and the first core pulling port is communicated with the second core pulling port when the mounting cover is arranged on the head.

Optionally, the head is provided with a first air mixing cavity, the first air mixing cavity is communicated with the first gas cavity, and the first core pulling opening is communicated with the first air mixing cavity so that the core in the first air mixing cavity can be pulled out from the first core pulling opening.

Optionally, the head portion has a first end close to the first gas mixing cavity and a second end close to the first gas combustion cavity, and in a projection of a plane perpendicular to an axial direction of the first core drawing opening, the first gas mixing cavity is arranged in an inclined manner from the first end to the second end in a direction away from the first core drawing opening.

Optionally, a flow guide surface is formed in the first gas mixing cavity, and the flow guide surface is arranged opposite to the first core pulling opening and is used for guiding the airflow entering the first gas mixing cavity from the first core pulling opening to the first gas cavity.

Optionally, the cavity wall of the first gas mixing cavity is smoothly connected with the flow guide surface, and/or the cavity wall of the first gas mixing cavity is smoothly connected with the flow guide surface.

Optionally, the head portion has a first end close to the first gas mixing cavity and a second end close to the first gas combustion cavity, and in a projection of a plane parallel to an axial direction of the first core drawing opening, the flow guide surface is arranged in an inclined manner in a direction away from the first core drawing opening from the first end to the second end.

Optionally, the head is provided with a second fuel gas cavity and a third core pulling port, the third core pulling port is communicated with the second fuel gas cavity, and the second fuel gas cavity and the third core pulling port are formed by core pulling processes respectively;

the furnace end still includes:

the second draws penetrates the pipe, with the installation lid is connected, be equipped with on the installation lid and supply the core follow the fourth core-pulling mouth that the second draws penetrates the pipe and draw, the installation lid is installed in when the head, the fourth core-pulling mouth with the third is loosed the core and is linked together.

Optionally, the head is provided with a second air mixing cavity communicated with the second fuel air cavity, and the third core pulling port is communicated with the second air mixing cavity so that the core in the second air mixing cavity can be pulled out from the third core pulling port.

Optionally, the mounting cover, the first injection pipe and the second injection pipe are made of aluminum alloy, and/or the head is made of aluminum alloy.

Optionally, the head is further provided with a central lumen, the central lumen penetrates through the head, and the first gas cavity is annularly arranged on the periphery of the central lumen.

The utility model also provides a combustor, include:

the fire cover is provided with a fire hole and a central hole;

the burner is characterized in that the burner head is provided with the fire cover, the fire hole is communicated with the first gas cavity, and the central hole corresponds to the central tube cavity; and

and the anti-dry-burning sensor penetrates through the central tube cavity of the furnace end and the central hole and protrudes to one side, far away from the furnace end, of the fire cover.

The utility model also provides a gas cooking utensils, gas cooking utensils include as above-mentioned the combustor.

The technical scheme of the utility model is that the core pulling from the head part is realized by adopting the first core pulling port arranged on the head part, so as to form a channel for communicating the first injection pipe with the first gas cavity; through set up the second and take out the core mouth on the installation is covered, can conveniently realize the shaping of loosing core of first injection pipe, through can dismantling the installation lid with the head and be connected, realize the components of a whole that can function independently preparation of head and first injection pipe, reduce the cost of manufacture.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of the furnace head of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic structural view of an embodiment of the head of the present invention;

FIG. 4 is a bottom view of FIG. 3;

FIG. 5 is a schematic structural view of an embodiment of the head core-pulling opening side of the present invention;

FIG. 6 is a schematic structural view of an embodiment of the installation cover of the present invention;

fig. 7 is a schematic structural diagram of an embodiment of the burner of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Fire lid	110	Center hole
200	Dry burning prevention sensor	300	Furnace end
				30	Head part	31	First gas chamber
32	Second fuel gas chamber	33	Central tube cavity
				34	First gas mixing cavity	341	First core-pulling opening
342	Flow guide surface	35	Second gas mixing cavity
				351	Third loose core opening	36	Mounting cover
361	Second loose core opening	362	Fourth loose core opening
				37	First injection pipe	38	Second injection pipe

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a furnace end 300 for the combustor, the combustor is used for installing on gas cooking utensils. The mixed gas of gas and air enters the burner from the burner head 300 and is injected through the fire holes on the burner to form a flame. Fig. 1 to 7 are corresponding drawings of the embodiments of the present invention.

Referring to fig. 1 and 2, in an embodiment, the furnace head 300 includes: the gas burner comprises a head part 30, wherein a first gas cavity 31 and a first core extraction opening 341 are formed in the head part 30, the first core extraction opening 341 is communicated with the first gas cavity 31, and the first core extraction opening 341 and the first gas cavity 31 are formed through a core extraction process respectively.

In an embodiment, the burner 300 further includes a first injection pipe 37, and the first injection pipe 37 is used for forming an injection passage for inputting fuel gas into the head 30 and injecting air into the head 30.

In one embodiment, the burner 300 further includes a mounting cap 36, the mounting cap 36 being adapted to be removably mounted to the head 30. The first injection pipe 37 is connected to the mounting cover 36, a second core-drawing opening 361 for drawing the core out of the first injection pipe 37 is formed in the mounting cover 36, and when the mounting cover 36 is mounted on the head 30, the first core-drawing opening 341 is communicated with the second core-drawing opening 361.

When the head is molded, a first core for forming the first gas chamber 31 and a second core for forming the first core extraction opening 341 are provided in the head, and the first core and the second core are extracted from the head 30 to form the first core extraction opening 341 and the first gas chamber 31. Because the shape of the head of the furnace end is of a special-shaped structure, the first fuel gas cavity and the first core-pulling opening are respectively formed by core pulling, and the head can be quickly molded by core pulling.

In an embodiment, the head 30 is further provided with a central lumen 33, the central lumen 33 penetrates through the head 30, the central lumen 33 is a hollow cavity penetrating through the head 30 and is used for installing the dry-burning prevention sensor 200, so that the dry-burning prevention sensor 200 can protrude from the burner 300 to the outside of the fire cover 100, the combustion state of the pot can be conveniently detected, and the pot is prevented from being burned. The dry-burning prevention sensor 200 is fixed to the head 30 in a manner similar to that of the prior art.

In an embodiment, the head 30 is provided with a first air mixing cavity 34, the first air mixing cavity 34 is communicated with the first gas cavity 31, and the first core drawing opening 341 is communicated with the first air mixing cavity 34, so that the core in the first air mixing cavity 34 can be drawn out from the first core drawing opening 341.

The head 30 forms a main body structure of the burner 300, the first core-pulling opening 341 serves as an air inlet end of the head 30, and air flow enters the first air mixing chamber 34 from the first core-pulling opening 341 and is conveyed to the first gas chamber 31 to be output to the outside of the burner 300. After the burner head 300 is provided with the fire cover 100, the fire holes of the fire cover 100 are communicated with the first air mixing chamber 34, so that the air flow of the first air mixing chamber 34 is jetted and combusted from the fire holes to form flames.

Taking the state shown in fig. 1 as an example, the first gas chamber 31 is provided at the upper portion of the head 30, and the first gas mixing chamber 34 is provided below the first gas chamber 31. The central lumen 33 may be arranged coaxially with the first gas chamber 31. When the fire cover 100 is disposed on the burner 300, the dry burning prevention sensor 200 is inserted into the central lumen 33, such that the dry burning prevention sensor 200 protrudes from the outside of the fire cover 100 to the top and abuts against the bottom surface of the pot.

The first ejector pipe 37 is used for communicating a gas pipeline, when gas enters the first ejector pipe 37 at a high speed, air is ejected into the first ejector pipe 37 under the action of a venturi effect, and enters the first gas mixing cavity 34 through the first core extraction opening 341. Because the first injection pipe 37 is detachably installed on the head 30, the first injection pipe 37 does not affect the molding of the head 30, and the integral molding processing of the head 30 can be facilitated. It is right when the furnace end carries out the shaping, because can with the head with first draw penetrates the pipe 37 shaping respectively, can avoid the problem that the mould cost is high that the whole shaping exists, effectively reduces the processing cost of furnace end.

Referring to fig. 3, 4 and 5, when the head 30 is molded, a first core for forming the central tube cavity 33, a second core for forming the first gas cavity 31 and a third core for forming the first gas mixing cavity 34 may be provided on a mold, and after the head 30 is molded, the first core and the second core are drawn upward as shown in fig. 1, and the third core is drawn in an axial direction of the first core drawing opening 341, so that the head 30 forms the central tube cavity 33, the first gas cavity 31 and the first gas mixing cavity 34. The third core is shaped and sized in conformity with the first core-extraction opening 341 so that the third core can be extracted from the first core-extraction opening 341.

Referring to fig. 1 and 2, by providing the first core-pulling opening 341, the core in the first air mixing cavity 34 can be conveniently pulled out during molding, so as to facilitate molding of the first air mixing cavity 34. When the core in the first air mixing cavity 34 is extracted, the first core extraction opening 341 can be used as an air inlet communicated with the first injection pipe 37, the first injection pipe 37 is installed on the head 30, and the first core extraction opening 341 is communicated, so that the burner 300 structure is formed.

The head 30 can be directly formed integrally by aluminum alloy, so that the problem of rusting of the head 30 can be avoided. The first injection pipe 37 and the mounting cap may be formed of an aluminum alloy so that the burner 300 is not easily damaged due to rust.

Alternatively, the head 30 has a first end close to the first gas mixing chamber 34 and a second end close to the first gas chamber 31, and the first gas mixing chamber 34 is disposed to be inclined in a direction away from the first core extraction opening 341 from the first end toward the second end in a projection of the head 30 on a plane perpendicular to the axial direction of the first core extraction opening 341. Through adopting the first air mixing cavity 34 that is the slope setting, can prolong the length of the air current passageway of first air mixing cavity, and then make gas and air can carry out intensive mixing.

As shown in fig. 5, the first end is a lower end of the head, the second end is an upper end of the head, the first pumping port 341 is disposed near a rear side of the first air mixing chamber 34, and the first air mixing chamber is disposed obliquely from a right side of the first pumping port.

Because the first end is arranged in an inclined mode towards the second end, the corner of the joint of the first gas mixing cavity and the first gas cavity is reduced, and the wind resistance of the joint of the first gas mixing cavity and the first gas cavity can be reduced.

Referring to fig. 3 and 5, in order to reduce the wind resistance inside the head 30, in an embodiment, a flow guiding surface 342 is formed in the first gas mixing cavity 34, and the flow guiding surface 342 is disposed opposite to the first core drawing opening 341 and is used for guiding the airflow entering the first gas mixing cavity 34 from the first core drawing opening 341 to the direction of the first gas cavity 31. In the using state of the burner 300, the first air mixing cavity 34 is used for communicating with the first ejector pipe 37, and the first air mixing cavity 34 and the first gas cavity 31 are respectively arranged near two ends of the head 30. Taking the top-bottom arrangement as shown in fig. 1 as an example, the first gas cavity 31 is located at the upper portion of the head 30, the first gas mixing cavity 34 is located below the first gas cavity 31, and the flow guide surface 342 is used for guiding flow at the joint of the first gas mixing cavity 34 and the first gas cavity 31, so that the gas entering the first gas mixing cavity 34 can gradually flow towards the first gas cavity 31 along the flow guide surface 342, thereby avoiding a sharp corner at the joint of the first gas mixing cavity 34 and the first gas cavity 31, and further avoiding the wind resistance problem caused by the vortex at the joint of the first gas mixing cavity 34 and the first gas cavity 31. When the first ejector pipe 37 operates, high-speed airflow is ejected into the first air mixing cavity 34, and the airflow is guided by the guide surface 342, so that the problem of poor ejection effect caused by excessive airflow resistance in the first air mixing cavity 34 can be solved.

The flow guide surface 342 is used for guiding the airflow, and the flow guide surface 342 may be a plane or an arc. Since the head 30 is generally circular in structure, in this embodiment, the flow guiding surface 342 is an arc surface along the contour of the head 30, so that the airflow entering the first air mixing chamber 34 from the first ejector pipe 37 can be gradually and smoothly delivered to the first gas chamber 31 along the first flow guiding surface 342.

Further optionally, the cavity wall of the first gas cavity 31 is smoothly connected to the flow guide surface 342, so that there is no corner portion at the connection between the flow guide surface 342 and the first gas cavity 31, and when the airflow flows to the first gas cavity 31 via the flow guide surface 342, there is no sharp turning, thereby reducing the wind resistance at the connection between the flow guide surface 342 and the first gas cavity 31.

In another embodiment, the cavity wall of the first air mixing cavity 34 is smoothly connected to the flow guiding surface 342, so that there is no sharp corner at the connection between the first air mixing cavity 34 and the flow guiding surface 342, and the vortex generated by the violent turning of the air flow in the first air mixing cavity 34 is avoided, thereby reducing the wind resistance in the first air mixing cavity 34. The diversion surface 342 is integrally arc-shaped, and the connection between the inner wall surface of the first gas cavity 31 and the inner wall surface of the first gas mixing cavity 34 and the diversion surface 342 is in a smooth transition state. In a cross section perpendicular to the axial direction of the central lumen 33, the inner wall surface of the first gas chamber 31 is tangent to the arc shape of the flow guide surface 342, and the inner wall surface of the first gas mixing chamber 34 is tangent to the arc shape of the flow guide surface 342.

Referring to fig. 3 and 5, in an embodiment, the head 30 has a first end close to the first air mixing chamber 34 and a second end close to the first gas chamber 31, and the flow guide surface 342 is disposed in an inclined manner in a direction away from the first core extraction opening 341 from the first end to the second end in a projection of a plane parallel to an axial direction of the first core extraction opening 341. The dry-heating prevention sensor 200 may be disposed from the first end to the second end.

Taking the state shown in fig. 5 as an example, one end of the flow guide surface 342 is connected to the first gas mixing cavity 34, and the other end thereof is inclined from bottom to top and extends toward the first gas cavity 31. The direction from the first end to the second end is from bottom to top as shown in fig. 5, the first core-pulling opening 341 is disposed near the front side of the head 30, and the flow guide surface 342 is inclined from bottom to top towards the front side of the head 30, so that the flow guide surface 342 forms an inclined plane. After the air flow enters the first air mixing cavity 34, the air flow is guided to the first gas cavity 31 from bottom to top, so that the volume of the first air mixing cavity 34 can be increased, and the air mixing efficiency is improved. When the airflow enters the first gas cavity 31 from the first gas mixing cavity 34, the flow guide surface 342 is obliquely arranged, so that the effective flow area of the joint of the flow guide surface 342 and the first gas cavity 31 can be increased, and the wind resistance of the joint of the flow guide surface 342 and the first gas cavity 31 can be further reduced.

Referring to fig. 1 and 6, in an embodiment, the head 30 is provided with a second fuel gas cavity 32 and a third core-pulling opening 351, the third core-pulling opening 351 is communicated with the second fuel gas cavity 32, and the second fuel gas cavity 32 and the third core-pulling opening 351 are respectively formed through a core-pulling process, so that when an included angle exists between an axial direction of the third core-pulling opening 351 and an axial direction of the second fuel gas cavity 32, the third core-pulling opening 351 and the second fuel gas cavity 32 are formed.

In an embodiment, the furnace end 300 further includes a second injection pipe 38, the second injection pipe 38 is connected to the mounting cover 36, a fourth core pulling opening 362 through which the core is pulled out from the second injection pipe 38 is disposed on the mounting cover 36, and when the mounting cover 36 is mounted on the head, the fourth core pulling opening is communicated with the third core pulling opening.

In one embodiment, the head 30 is provided with a second gas mixing cavity 35, the second gas mixing cavity 32 may be arranged around the periphery of the central tube cavity 33, and the second gas mixing cavity 32 is located between the central tube cavity 33 and the first gas mixing cavity 31; the second air mixing chamber 35 is communicated with the second fuel chamber 32, and the third core drawing port 351 is communicated with the second air mixing chamber 35; the first gas chamber 31 may serve as a chamber for supplying outer ring flame, and the second gas chamber 32 may serve as a chamber for supplying inner ring flame, and the gas flow enters the second gas mixing chamber 35 from the third core extraction opening 351 and is delivered to the second gas chamber 32. The second ejector pipe 38 is used for connecting a gas pipeline to input airflow into the second air mixing cavity 35, and when high-speed gas is input into the second ejector pipe 38, air is ejected into the second ejector pipe 38 under the action of a venturi effect and enters the second air mixing cavity 35 after primary mixing in the second ejector pipe 38 for secondary mixing.

The third core-pulling opening 351 corresponds to the shape of the second air mixing chamber 35 so that the core in the second air mixing chamber 35 can be pulled out from the third core-pulling opening 351. The second injection pipe 38 is detachably connected to the head 30 through the mounting cover 36, so that the second injection pipe 38 does not affect the integral molding of the head 30. The second injection pipe 38 may be made of an aluminum alloy material, so as to improve the corrosion resistance of the second injection pipe 38.

The first ejection pipe 37 and the second ejection pipe 38 are integrally provided. The first core-pulling opening 341 and the third core-pulling opening 351 are disposed toward the same side of the head 30, so that the first injection pipe 37 and the second injection pipe 38 are installed on the head 30 from the same side of the head 30, and a gas pipeline is laid on the gas stove when the burner 300 is installed on the gas stove.

The second core-pulling opening 361 and the fourth core-pulling opening 362 are through holes penetrating through the mounting cover 36. The mounting cover can be a flat structure, and the first injection pipe 37 and the second injection pipe 38 are respectively arranged at the same side of the mounting cover 36. The mounting cover, the first injection pipe 37 and the second injection pipe 38 are integrally arranged, so that the mounting cover, the first injection pipe 37 and the second injection pipe 38 can be conveniently molded. When the first injection pipe 37 and the second injection pipe 38 are manufactured, a fourth core for forming an internal cavity of the first injection pipe 37 and a fifth core for forming an internal cavity of the second injection pipe 38 may be provided on the mold. After molding, the fourth core and the fifth core are extracted from the second core extraction opening 361 and the fourth core extraction opening 362. In order to avoid rusting, in this embodiment, the mounting cover, the first injection pipe 37, and the second injection pipe 38 are made of aluminum alloy.

The utility model discloses still provide an embodiment of combustor.

Referring to fig. 7, the burner includes: the fire cover 100 is provided with a fire hole and a central hole 110; the burner 300, as described in any of the above embodiments, the fire cover 100 is disposed on the burner 300, the fire hole is communicated with the first gas cavity 31, and the central hole 110 corresponds to the central cavity 33; and an anti-dry burning sensor 200, wherein the anti-dry burning sensor 200 penetrates through the central tube cavity 33 and the central hole 110 of the burner 300 and protrudes to one side of the fire cover 100 far away from the burner 300.

An air distribution plate can be arranged between the fire cover 100 and the burner 300, and reference can be made to the prior art. The fire hole on the fire cover 100 is communicated with the first gas chamber 31, and the mixed gas in the first gas chamber 31 is jetted and combusted through the fire hole to form flame.

The central hole 110 is a through hole penetrating through the fire lid 100, and the dry-burning prevention sensor 200 extends into the central hole 110 from the central tube cavity 33 and protrudes out of the fire lid 100 to be abutted against the bottom surface of the pot. The fire cover 100 can be an inner ring fire cover 100 or an outer ring fire cover 100. When the head 30 is provided with the second gas chamber 32, the fire cover 100 may be provided with inner and outer double fire holes.

The utility model discloses still provide an embodiment of gas cooking utensils, gas cooking utensils include like embodiment the combustor.

Claims (12)

1. A furnace end, characterized in that the furnace end comprises:

the fuel gas injection device comprises a head part, a fuel gas injection device and a fuel gas injection device, wherein the head part is provided with a first fuel gas cavity and a first core pulling port, the first core pulling port is communicated with the first fuel gas cavity, and the first fuel gas cavity and the first core pulling port are formed through a core pulling process respectively;

a mounting cover detachably connected to the head; and

the first injection pipe is connected with the mounting cover, a second core pulling port for the core to be pulled out from the first injection pipe is arranged on the mounting cover, and the first core pulling port is communicated with the second core pulling port when the mounting cover is arranged on the head.

2. The burner of claim 1, wherein the head portion is provided with a first air mixing cavity, the first air mixing cavity is communicated with the first gas cavity, and the first core pulling opening is communicated with the first air mixing cavity, so that a core in the first air mixing cavity is pulled out from the first core pulling opening.

3. The burner of claim 2, wherein the head portion has a first end adjacent to the first gas mixing chamber and a second end adjacent to the first gas chamber, and the head portion is inclined in a direction away from the first core extraction opening from the first end toward the second end in a projection of a plane perpendicular to an axial direction of the first core extraction opening.

4. The burner of claim 2, wherein a flow guide surface is formed in the first gas mixing cavity, and the flow guide surface is disposed opposite to the first core pulling opening and is configured to guide the airflow entering the first gas mixing cavity from the first core pulling opening toward the first gas cavity.

5. The burner of claim 4, wherein a wall of the first gas chamber is smoothly connected to the deflector surface and/or a wall of the first gas chamber is smoothly connected to the deflector surface.

6. The burner of claim 4, wherein the head portion has a first end adjacent to the first gas mixing chamber and a second end adjacent to the first gas chamber, and the flow guide surface is disposed obliquely away from the first core extraction opening from the first end toward the second end in a projection of a plane parallel to an axial direction of the first core extraction opening.

7. The burner of claim 1, wherein the head portion is provided with a second fuel gas chamber and a third core extraction port, the third core extraction port is in communication with the second fuel gas chamber, and the second fuel gas chamber and the third core extraction port are respectively formed by a core extraction process;

the furnace end still includes:

the second draws penetrates the pipe, with the installation lid is connected, be equipped with on the installation lid and supply the core follow the fourth core-pulling mouth that the second draws penetrates the pipe and draw, the installation lid is installed in when the head, the fourth core-pulling mouth with the third is loosed the core and is linked together.

8. The burner of claim 7, wherein the head portion is provided with a second air mixing chamber communicated with the second fuel air chamber, and the third core pulling opening is communicated with the second air mixing chamber so that the core in the second air mixing chamber can be pulled out of the third core pulling opening.

9. The burner of claim 7, wherein the mounting cap, the first injection tube, and the second injection tube are made of aluminum alloy, and/or the head portion is made of aluminum alloy.

10. The burner of any one of claims 1 to 9, wherein the head further defines a central lumen, the central lumen is disposed through the head, and the first gas chamber is disposed around a periphery of the central lumen.

11. A burner, comprising:

the fire cover is provided with a fire hole and a central hole;

the burner as claimed in claim 10, wherein the fire cover is disposed on the burner, the fire hole is communicated with the first gas chamber, and the central hole corresponds to the central chamber; and

and the anti-dry-burning sensor penetrates through the central tube cavity of the furnace end and the central hole and protrudes to one side, far away from the furnace end, of the fire cover.

12. Gas hob, characterized in, that the gas hob comprises a burner as claimed in claim 11.

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