CN111964105A

CN111964105A - Furnace end with gas carding device

Info

Publication number: CN111964105A
Application number: CN202010642561.7A
Authority: CN
Inventors: 刘华荣; 卢华枝; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2020-11-20

Abstract

The invention discloses a burner with a gas carding device, which comprises a burner body and the gas carding device, wherein the burner body is provided with a gas mixing cavity and at least two gas channels, the gas carding device comprises a blocking structure which is arranged in the gas mixing cavity and is positioned above the outlets of the gas channels, the blocking structure is provided with a gas carding channel communicated with the gas channels, or the blocking structure, the bottom of the gas mixing cavity and a ring wall jointly define the gas carding channel communicated with the gas channels, the left side and/or the right side of the gas carding channel are/is provided with gas outlets, and the gas outlets are communicated with the gas mixing cavity. According to the invention, by arranging the blocking structure, the flow speed and the flow direction of the fuel gas are reduced and changed when the fuel gas flows into the gas mixing cavity, the flow direction and the flow speed of the fuel gas flowing into the gas mixing cavity are combed, the combustion is more uniform and stable, and meanwhile, the flameout noise can be effectively inhibited.

Description

Furnace end with gas carding device

Technical Field

The invention relates to the technical field of cookers, in particular to a burner for a cooker.

Background

The combustion system of domestic gas-cooker mainly comprises furnace end and fire lid, and the gas that mixes in advance through the furnace end cavity passes through the furnace end and divides the gas channel direct arrival fire lid via the burning of fire hole, and the gas speed that nevertheless has the combustor to reach each position of fire lid from the branch gas channel of furnace end is different, and like this, flame state is inconsistent when can leading to the burning, influences combustion effect and burning performance.

In addition, when the burner performs a flameout operation, particularly the outer burner cap, the entire outer burner cap is generally not simultaneously flameout, but is partially flameout first and then completely flameout in a short time due to complete cut-off of gas. After the outer fire cover is locally flamed out, negative pressure is formed in the cavity of the local fire cover, external air is pressed into the cavity of the outer fire cover from the fire hole, and when the external air is mixed with residual gas in the cavity of the fire cover and the outer ring gas cavity of the furnace end to reach a certain proportion, the external air is ignited by the fire hole which is still burning to cause blasting and generate flameout noise.

Disclosure of Invention

The invention aims to solve at least one of the problems in the prior related art to a certain extent, and therefore the invention provides a burner with a gas carding device, which not only can card the flow direction and the flow speed of gas flowing into a gas mixing cavity of the burner so as to enable the combustion to be more uniform and stable, but also can effectively inhibit the flameout noise.

According to the furnace end of taking gas carding unit that above-mentioned provided, it realizes through following technical scheme:

the utility model provides a take gas carding unit's furnace end, includes the furnace end body, the furnace end body is equipped with two at least gas passageways of the cavity of mixing gas of upwards open-ended and wherein still includes gas carding unit, gas carding unit including set up in mix the gas intracavity and be located the structure that blocks of gas passageway export top, block the structure and be equipped with the intercommunication the comb gas passageway of gas passageway, perhaps block the structure the bottom of mixing gas cavity and ring wall inject the intercommunication jointly the comb gas passageway of gas passageway, comb the gas passageway and be used for changing the gas flow direction the left side and/or the right side of comb gas passageway are equipped with and are used for making the gas towards the gas outlet of horizontal direction outflow, the gas outlet intercommunication mix the gas cavity.

In some embodiments, the blocking structure is a deflector disposed obliquely in a vertical direction, a lower side and an upper side of the deflector are respectively abutted against or connected with an outer annular wall and an inner annular wall of the air mixing chamber, and the deflector, a bottom of the air mixing chamber and the annular wall jointly define the air combing channel having left and right air outlets.

In some embodiments, the blocking structure comprises a connecting plate and a baffle plate, one side of the connecting plate abuts against or is connected with the outer annular wall of the gas mixing cavity, the other side of the connecting plate extends upwards or obliquely upwards and is connected with the baffle plate, one side of the baffle plate, which is far away from the connecting plate, abuts against or is connected with the inner annular wall of the gas mixing cavity, and the connecting plate, the baffle plate, the bottom of the gas mixing cavity and the annular wall jointly define the gas combing channel with a left gas outlet and a right gas outlet.

In some embodiments, an upwardly open recess is integrally stamped down in the middle of the blocking structure to define left and right card air channels.

In some embodiments, the groove is "V" shaped.

In some embodiments, a flow guide portion for guiding the gas to the gas outlet is provided at the bottom of the blocking structure.

In some embodiments, the flow guide is disposed below a middle portion of the blocking structure, and the flow guide is shaped like a "V" to define left and right carding channels.

In some embodiments, the top of the blocking structure is lower than the upper end face of the air mixing cavity, and the height of the blocking structure is mm-9 mm.

In some embodiments, a mounting groove is formed in a position, corresponding to the outlet of the gas channel, of the outer annular wall or the inner annular wall of the gas mixing cavity, one side of the blocking structure is inserted into the mounting groove, and the other side of the blocking structure is abutted against the annular wall, facing the mounting groove, of the gas mixing cavity; or the outer ring wall and the inner ring wall of the gas mixing cavity are provided with mounting grooves at positions corresponding to the outlet of the gas channel, and the inner side and the outer side of the blocking structure are respectively inserted into the mounting grooves.

In some embodiments, the gas carding device further comprises an annular support installed in the gas mixing cavity, the bottom of the annular support abuts against the bottom of the gas mixing cavity, the outer side and the inner side of the annular support abut against the outer annular wall and the inner annular wall of the gas mixing cavity respectively, a vent hole is formed in the position, corresponding to the outlet of the gas channel, of the annular support, the blocking structure is arranged above the vent hole, one side of the blocking structure is connected with the annular support, and the other side of the blocking structure abuts against the inner annular wall of the gas mixing cavity.

In some embodiments, the blocking structure is formed by partially cutting and stamping the annular support and then turning the annular support upwards, and the air outlet is formed between the annular support and the blocking structure.

In some embodiments, the gas mixing cavity is provided with a positioning portion, the annular support is provided with a matching portion at a position corresponding to the positioning portion, and the matching portion is connected with the positioning portion in a matching manner.

Compared with the prior art, the invention at least comprises the following beneficial effects:

according to the burner with the gas carding device, the blocking structure is arranged, so that the flow speed and the flow direction of gas are reduced and changed when the gas flows into the gas mixing cavity, the flow direction and the flow speed of the gas flowing into the gas mixing cavity are combed, the gas flow speed of the gas flowing into all positions inside the burner cap is approximately the same, the combustion is more uniform and stable, and meanwhile, the effect of effectively suppressing flameout noise can be achieved.

Drawings

Fig. 1 is a schematic structural view of a burner head of a burner in embodiment 1 of the present invention;

fig. 2 is an exploded view of a burner head of a burner according to embodiment 1 of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 2;

FIG. 4 is a partial schematic structural view of a second gas carding device in embodiment 2 of the present invention;

FIG. 5 is an exploded view of a third gas combing device and a burner body according to embodiment 3 of the present invention;

FIG. 6 is a schematic view showing the construction of a fourth gas carding unit according to embodiment 4 of the present invention;

FIG. 7 is a schematic structural view of a fifth gas carding unit in embodiment 5 of the invention;

FIG. 8 is a partial schematic view showing the construction of a sixth gas carding device according to embodiment 6 of the present invention;

FIG. 9 is a partial schematic view showing the structure of a seventh gas carding unit according to embodiment 7 of the present invention.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.

Example 1

The outer ring gas flow path of the existing burner is as follows: after the fuel gas flows out from the fuel gas channel of the burner, the fuel gas is mainly divided into two parts, one part directly flows upwards into the fire cover cavity, and the other part flows towards the left side and the right side of the outlet of the fuel gas channel of the burner. The outer ring air cavity of the furnace end is gradually filled and then overflows upwards to the fire cover cavity, and the fuel gas in the fire cover cavity flows out from the fire hole of the fire cover and is combusted. Because the direct upward gas velocity of flow of gas channel from the furnace end is greater than the upward gas velocity of flow of gas in the outer ring gas chamber from the furnace end, like this, the gas velocity of flow that flows into each position of fire lid cavity is inequality. When the existing burner executes flameout operation, the gas flow speed of a gas channel of the burner is suddenly reduced, after the gas in the corresponding local fire cover cavity is burnt out, the corresponding local fire hole is flameout firstly, and then other fire holes are all flameout due to complete cut-off of the gas in a short time. In this in-process, form the negative pressure in the fire lid cavity, lead to outside air to cover the fire hole from the fire and impress in the fire lid cavity, when outside air and the residual gas mixture of fire lid cavity and furnace end outer loop air cavity reached certain proportion, lighted and cause the blasting by the fire hole of still burning, produced flame-out noise, influence user experience.

As shown in fig. 1 to 3, in order to solve the above problems, the present embodiment provides a furnace end with a gas carding device, including a furnace end body 1 and a gas carding device (not shown in the figure), the furnace end body 1 is provided with an upward opening gas mixing cavity 11 and at least two gas channels 12 communicating with the gas mixing cavity 11, and the plurality of gas channels 12 are uniformly arranged along the circumferential direction of the gas mixing cavity 11 at intervals, so as to ensure that the gas can uniformly enter the gas mixing cavity 11, thereby improving the gas distribution uniformity. The gas carding device comprises a blocking structure 2, the blocking structure 2 located in a gas mixing cavity 11 is arranged above an outlet of a gas channel 12, the projection of the blocking structure 2 on the horizontal plane covers the outlet of the corresponding gas channel 12, the blocking structure 2 is provided with a gas carding channel (not shown in the figure) communicated with the gas channel 12, or the blocking structure 2, the bottom of the gas mixing cavity 11 and the ring wall define the gas carding channel communicated with the gas channel 12 together, the gas carding channel is used for changing the gas flowing direction, a gas outlet 3 used for enabling gas to flow out towards the horizontal direction is arranged on the left side and/or the right side of the circumferential direction of the gas carding channel, and the gas outlet 3 is communicated with the gas mixing cavity 11.

Specifically, the air mixing cavity 11 is an annular structure having an inner annular wall and an outer annular wall, and the air combing channel may be defined by the blocking structure 2, the bottom of the air mixing cavity 11, the inner annular wall or the outer annular wall of the air mixing cavity 11, or by the blocking structure 2, the bottom of the air mixing cavity 11, the inner annular wall and the outer annular wall of the air mixing cavity 11. Due to the arrangement of the blocking structure 2, the gas flow path is changed, and the specific gas flow path is as follows: in the gas entered the comb gas passageway from gas passageway 12 vertical upflow, receive its velocity of flow reduction and flow direction change of the influence of comb gas passageway (being barrier structure 2), flow along the comb gas passageway, flow into in mixing the air cavity 11 towards the horizontal direction from gas outlet 3 and mix in advance, the gas is full of mixing the air cavity 11 gradually and upwards overflows to the cavity of combustor fire lid again to the gas velocity of flow that makes each position of cavity that flows into combustor fire lid is roughly the same, goes out from the fire hole of combustor fire lid at last and flows out and the burning. In addition, because the gas velocity of flow that flows into each position of combustor fire lid is roughly the same, when the combustor is flame-out, because of the synchronous reduction velocity of flow of gas cut off, the inside residual gas of combustor burns up almost simultaneously, and the fire hole of whole combustor fire lid is flame-out simultaneously, and combustor fire lid is inside can not form the negative pressure, and then can not form the outside air and get into the cavity production condition of blasting that combustor fire lid, consequently, can effectively reduce flame-out noise.

It can be seen that the furnace end of taking gas carding unit of this embodiment, it is through setting up barrier structure 2 above gas passageway 12 for the gas flows into the velocity of flow reduction and the flow direction change that mixes gas chamber 11 from gas passageway 12, has realized combing the gas flow direction and the velocity of flow that flows into mixing gas chamber 11, and the gas velocity of flow that guarantees to flow into inside each position of combustor fire lid is roughly the same, makes the burning more even and stable, can also reach the effect of effectively suppressing flame-out noise simultaneously.

Preferably, the number of the gas passages 12 and the blocking structures 2 in the embodiment is four, and the four gas passages 12 are uniformly arranged at intervals along the circumferential direction, so that the gas can uniformly flow into the gas combing passage, and the gas distribution uniformity is improved. More preferably, the top of the blocking structure 2 is lower than the upper end surface of the air mixing cavity 11, and the height of the blocking structure 2 is 4 mm-9 mm, so that the gas can be filled to the top area of the blocking structure 2, and the gas is ensured to be filled above the blocking structure 2. In the present embodiment, the height of the barrier structure 2 is preferably 6mm to ensure the air-out smoothness and the air-out area.

As shown in fig. 2, in the present embodiment, the gas carding device further comprises an annular support 4 installed in the gas mixing chamber 11, the bottom of the annular support 4 abuts against the bottom of the gas mixing chamber 11, and the outer side and the inner side thereof abut against the outer annular wall and the inner annular wall of the gas mixing chamber 11, respectively, so that stable and reliable installation of the annular support 4 in the gas mixing chamber 11 is achieved, and gas is prevented from flowing out from between the annular support 4 and the annular wall of the gas mixing chamber 11. And a vent hole 41 is arranged at the position of the annular support 4 corresponding to the outlet of the gas channel, and the size of the vent hole 41 is larger than that of the outlet of the gas channel 12, so that the influence on the gas output due to the arrangement of the vent hole 41 is avoided. Block structure 2 and set up in blow vent 41 top and its one side and connect annular support 4, the inner annular wall or the outer annular wall of opposite side butt gas mixing chamber 11, be formed with gas outlet 3 between blocking structure 2 and annular support 4, thus, through annular support 4, it is quick to have realized blocking structure 2, firm reliable installation is inside gas mixing chamber 11, and through the inner annular wall or the outer annular wall that will block structure 2 and keep away from one side butt gas mixing chamber 11 of annular support 4, avoid the gas from blocking structure 2 and mixing chamber 11 ring wall between upwards outflow, and then guarantee to flow into the gas in gas channel 12, flow out from 3 tangents of gas outlet along gas channel 12.

Preferably, the air mixing chamber 11 is provided with a positioning portion 111, the annular support 4 is provided with a matching portion 42 at a position corresponding to the positioning portion 111, and the matching portion 42 is in matching connection with the positioning portion 111, so that the annular support 4 is more stably and reliably mounted through the matching connection between the matching portion 42 and the positioning portion 111.

More preferably, annular support 4 is the annular plate, and location portion 111 is the reference column, and cooperation portion 42 is the locating hole, mixes 11 bottoms in gas chamber and has four reference columns along the circumference direction equipartition, and is corresponding, and annular support 4 has four locating holes along the circumference direction equipartition, and like this, through four reference columns and four locating hole cooperation joints, effectively avoid annular support 4's blow vent 41 and block structure 2 and appear shifting under the air current effect, further strengthen the steadiness and the reliability of gas carding unit installation.

In other embodiments, the positioning portion 111 and the matching portion 42 may be omitted, or a welding method or a high temperature resistant adhesive bonding method may be used instead of the clamping method of the positioning portion 111 and the matching portion 42.

Preferably, the blocking structure 2 is formed by partially cutting and stamping the annular support 4 and then turning upwards, the blocking structure 2, the bottom surface of the gas mixing cavity 11 and the inner annular wall of the gas mixing cavity 11 jointly define a gas combing channel, and the gas outlet 3 is formed between the annular support 4 and the blocking structure 2. Thereby, the machine forming speed of the barrier structure 2 can be improved and the connection fastness between the barrier structure 2 and the annular support 4 can be improved.

As shown in fig. 1-3, specifically, the blocking structure 2 includes a connecting plate 21 and a baffle 22, one side of the connecting plate 21 abuts against or is connected with the outer annular wall of the air mixing cavity 11, the other side of the connecting plate extends upwards or obliquely upwards, the baffle 22 is disposed above the outlet of the gas channel 12, the outer side of the baffle 22 is connected with the connecting plate 21 and the two are disposed at a right angle or an obtuse angle, the inner side abuts against or is connected with the inner annular wall of the air mixing cavity 11, and the connecting plate 21, the baffle 22, the bottom of the air mixing cavity 11 and the inner annular wall jointly define the air combing channel with left and. Therefore, the connecting plate 21, the baffle 22, the bottom of the gas mixing cavity 11 and the inner ring wall jointly define a gas combing channel with a left gas outlet and a right gas outlet, so that the area of the gas outlets 3 is larger, the unit gas output is improved, and the stability of combustion is ensured; simultaneously through setting up two gas outlets 3 about, not only improve the porosity, can also make two adjacent gas outlets 3 give vent to anger the direction relative, form the convection current when making the gas flow to the horizontal direction from gas outlet 3, further improve the mixing uniformity of gas and air, effectively guarantee because the gas velocity of flow of each position of the cavity of inflow combustor fire lid is roughly the same, make the burning more stable and even, effectively restrain flame-out noise.

In this embodiment, the lower side of the connecting plate 21 is connected to the annular support 4, and the lower side of the connecting plate 21 is abutted to the outer annular wall of the gas mixing cavity 11 through the outer side of the annular support 4, the baffle 22 is disposed right above and the outer side of the baffle is connected to the upper side of the connecting plate 21, and the inner side of the baffle is abutted to the inner annular wall of the gas mixing cavity 11, so that the connecting plate 21 is abutted to the outer annular wall of the gas mixing cavity 11 through the outer side of the annular support 4, and the airtightness between the connecting plate 21 and the gas mixing cavity 11 is.

Preferably, the connecting plate 21 and the baffle 22 form a 7 shape, the connecting plate 21 comprises a connecting surface 211 and a transition surface 212, the lower side of the connecting surface 211 is connected with the annular support 4, and the upper side is connected with the baffle 22 through the transition surface 212. In the embodiment, the connecting surface 211 is a vertically arranged plane to ensure that the air outlet area of the air outlet 3 formed between the blocking structure 2 and the annular support 4 is larger. The transition surface 212 is a sloped or curved surface to better direct the flow of the combustion gases up to the baffle 22. The baffle 22 is a plane arranged transversely, so that the gas is influenced by the baffle 22 to reduce the flow velocity when flowing upwards, the gas flow direction is enabled to turn to the horizontal direction better, and the gas is further ensured to flow to the horizontal direction and flow out tangentially from the gas outlet 3.

More preferably, the baffle 22 is lower than the plane of the upper end surface of the gas mixing cavity 11, so that the gas outlet 3 formed between the blocked structure 2 and the annular support 4 is lower than the upper end surface of the gas mixing cavity 11, and it is ensured that the gas is premixed uniformly in the gas mixing cavity 11 after flowing out horizontally from the gas outlet 3, and then flows upwards to the cavity of the burner fire cover at substantially the same flow rate.

In other embodiments, the baffle 22 may also be provided as an inclined surface arranged obliquely in the vertical direction to further increase the air outlet area of the air outlet 3.

Example 2

As shown in fig. 4, the present embodiment is different from embodiment 1 in that the barrier structure 2 is different in structure. Specifically, the blocking structure 2 is a flow deflector (not shown in the figure) which is obliquely arranged in the vertical direction, the flow deflector is arranged above the opening of the annular support 4, and the lower side of the flow deflector is connected with the annular support 4 and is abutted against the outer annular wall of the air mixing cavity through the outer side of the annular support 4. The upper side of the flow deflector extends to and abuts against or is connected with the inner annular wall of the air mixing cavity in an inclined manner, so that the flow deflector, the bottom of the air mixing cavity and the inner annular wall jointly define an air combing channel with a left air outlet and a right air outlet.

In this embodiment, the flow deflector is an arc surface, the flow deflector is formed by partially cutting and stamping the annular support 4 and then turning over the annular support 4 upwards, and the air outlet 3 is formed between the annular support 4 and the blocking structure 2. In other embodiments, the guide vanes may also be beveled.

It can be seen that, by setting the blocking structure 2 as the flow deflector, the structure of the gas carding device is simpler while the blocking structure 2 is ensured to be capable of carding the flow direction and the flow velocity of the gas flowing into the gas mixing cavity 11, and the blocking structure 2 is convenient to machine and form quickly.

Example 3

As shown in fig. 5, the difference from embodiment 1 is that the gas carding apparatus of the present embodiment omits the ring mount. Specifically, the outer annular wall of the gas mixing cavity 11 is provided with a mounting groove 13 at a position corresponding to the outlet of the gas channel, the blocking structure 2 is shaped like a Chinese character '7', the lower end face of the outer side of the blocking structure is provided with an installation part 203 extending outwards, during installation, the installation part 203 of the blocking structure 2 is inserted into the mounting groove 13, and the inner side of the blocking structure abuts against the inner annular wall of the gas mixing cavity 11 facing the mounting groove 13.

It can be seen that, by omitting the annular support, and inserting the mounting portion 203 of the blocking structure 2 into the mounting groove 13, the inner side of the blocking structure 2 abuts against the inner annular wall of the gas mixing cavity 11, so that the blocking structure 2 is stably and reliably mounted in the gas mixing cavity 11 and above the outlet of the gas channel 12, manufacturing materials can be saved, and manufacturing cost is reduced. In addition, insert the installation department 203 of blocking structure 2 in locating mounting groove 13 to make the connecting plate of blocking structure 2 move towards the outside, further increase the area of giving vent to anger of gas outlet 3, promote the unit effect of giving vent to anger, improve the combustion performance of combustor.

In other embodiments, it is also possible to arrange the mounting portion 203 on the inner side of the barrier structure 2, and correspondingly, the mounting groove 13 is arranged on the inner annular wall and above the outlet of the gas channel 12. Or, the inner annular wall and the outer annular wall of the gas mixing cavity 11 are provided with the mounting groove 13 at the position corresponding to the outlet of the gas channel, and the inner side and the outer side of the blocking structure 2 are correspondingly provided with the mounting part 203, so that the mounting of the blocking structure 2 is more stable and reliable, and the blocking structure 2 is effectively prevented from shifting due to the impact of the gas flow.

Example 4

As shown in fig. 6, the present embodiment is different from embodiment 1 in that the barrier structure 2 is different in structure. Specifically, an upwardly open groove 201 is integrally punched downward in the middle of the blocking structure 2 to define left and right carding channels. Preferably, the groove 201 is "V" shaped, and the side wall of the groove 201 is an inclined surface arranged obliquely in the vertical direction, and the inclined surface and the portion of the blocking structure 2 located outside the groove 201 are arranged in an obtuse angle or in an arc transition. The other portions were the same as in example 1.

It can be seen that, by additionally arranging the groove 201 in a V shape, the side wall of the groove 201 can better guide the gas to flow upwards to the plane section of the baffle of the blocking structure 2, the flow speed of the gas is reduced under the influence of the plane section of the baffle of the blocking structure 2, and the gas can better turn towards the horizontal direction. In addition, the groove 201 is formed by integrally punching the middle part of the blocking structure 2 downwards, so that the groove 201 can be conveniently and quickly processed and formed, the connecting process between the groove 201 and the blocking structure 2 is saved, and the utilization rate of the blocking structure 2 is improved.

Example 5

As shown in fig. 7, the present embodiment is different from embodiment 4 in that the shape of the groove 201 is different. Specifically, the groove 201 is "V" shaped, and the side wall of the groove 201 is an arc surface, and the arc surface and the portion of the blocking structure 2 located outside the groove 201 are in smooth transition arrangement. The other portions were the same as in example 4.

It can be seen that the side wall of the groove 201 is designed into an arc surface, and the side wall of the groove 201 and the plane section of the baffle plate of the blocking structure 2 are in smooth transition arrangement, so that the gas flows upwards more smoothly and turns to the horizontal direction better.

Example 6

As shown in fig. 8, the present embodiment is different from embodiment 1 in that the barrier structure 2 is different in structure. Specifically, a flow guide part 202 for guiding the gas to flow to the gas outlet 3 is arranged at the bottom of the blocking structure 2, the flow guide part 202 is arranged below the middle part of the blocking structure 2, and the flow guide part 202 is in a V shape to define a left gas combing channel and a right gas combing channel.

In the present embodiment, the sidewall of the flow guiding portion 202 is a slope arranged obliquely in the vertical direction, and the slope is arranged at an obtuse angle or at an arc transition with the baffle of the blocking structure 2. The other portions were the same as in example 1.

It can be seen that, through the middle part below of barrier structure 2 add the water conservancy diversion portion 202 that is "V" font, guide gas that can be better flows to barrier structure 2's baffle along water conservancy diversion portion 202 upwards, and its velocity of flow of gas reduces under barrier structure 2's baffle influence to turn round toward the horizontal direction better, flow out toward the horizontal direction from gas outlet 3.

Example 7

As shown in fig. 9, the present embodiment is different from embodiment 6 in that the flow guide portion 202 has a different shape. Specifically, the diversion portion 202 is "V" shaped, and the side wall of the diversion portion 202 is an arc surface, and the arc surface and the baffle of the blocking structure 2 are in a smooth transition arrangement. The other portions were the same as in example 4.

It can be seen that the side wall of the groove 201 is designed into an arc surface, and the side wall of the groove 201 and the plane section of the baffle plate of the blocking structure 2 are in smooth transition arrangement, so that the gas flows upwards more smoothly, turns to the horizontal direction better, and flows out from the gas outlet 3 towards the tangential direction of the horizontal direction.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims

1. A burner with a gas carding device comprises a burner body (1), wherein the burner body (1) is provided with a gas mixing cavity (11) with an upward opening and at least two gas channels (12), characterized in that the device also comprises a fuel gas carding device, the fuel gas carding device comprises a blocking structure (2) which is arranged in the gas mixing cavity (11) and is positioned above the outlet of the fuel gas channel (12), the blocking structure (2) is provided with a gas combing channel communicated with the gas channel (12), or the blocking structure (2), the bottom of the gas mixing cavity (11) and the annular wall jointly define a gas combing channel communicated with the gas channel (12), and the gas combing channel is used for changing the flowing direction of the gas, and the left side and/or the right side of the gas combing channel are/is provided with gas outlets (3) for enabling gas to flow out in the horizontal direction, and the gas outlets (3) are communicated with the gas mixing cavity (11).

2. Burner with a gas carding unit as in claim 1, characterised in that said blocking structure (2) is a deflector inclined in the vertical direction, the lower and upper sides of said deflector abutting or connecting respectively the outer and inner annular walls of said gas mixing chamber (11), and said deflector, the bottom of said gas mixing chamber (11) and the annular walls defining together said carding duct with left and right gas outlets.

3. Burner with a gas combing device according to claim 1, characterized in that the blocking structure (2) comprises a connecting plate (21) and a baffle (22), one side of the connecting plate (21) abuts or is connected to the outer annular wall of the gas mixing chamber (11), the other side extends upwards or obliquely upwards and is connected to the baffle (22), one side of the baffle (22) remote from the connecting plate (21) abuts or is connected to the inner annular wall of the gas mixing chamber (11), the connecting plate (21), the baffle (22), the bottom of the gas mixing chamber (11) and the annular wall jointly define the combing channel with left and right gas outlets.

4. Burner with gas grooming device as claimed in claim 2 or 3, characterized in that an upwardly open groove (201) is integrally stamped downwards in the middle of the blocking structure (2) to define the left and right carding channels.

5. Burner with gas grooming device as claimed in claim 4, characterized in that said groove (201) is "V" shaped.

6. Burner with gas grooming device as claimed in claim 2 or 3, characterized in that a deflector (202) is provided at the bottom of the baffle structure (2) for guiding the gas towards the gas outlet (3).

7. Burner with a gas carding unit according to claim 6, characterised in that said deflector (202) is arranged below the middle of said blocking structure (2), and in that said deflector (202) is "V" shaped to define left and right carding channels.

8. The burner with gas combing device according to claim 1, 2 or 3, characterized in that the top of the blocking structure (2) is lower than the upper end surface of the gas mixing chamber (11), and the height of the blocking structure (2) is 4mm to 9 mm.

9. The burner with gas carding unit of claim 1, wherein the outer or inner annular wall of the gas mixing chamber (11) is provided with a mounting groove (13) at a position corresponding to the outlet of the gas channel (12), one side of the blocking structure (2) is inserted into the mounting groove (13), and the other side abuts against the annular wall of the gas mixing chamber (11) facing the mounting groove (13);

or the outer ring wall and the inner ring wall of the gas mixing cavity (11) are respectively provided with a mounting groove (13) at the position corresponding to the outlet of the gas channel (12), and the inner side and the outer side of the blocking structure (2) are respectively inserted into the mounting grooves (13).

10. The burner with the gas carding device of claim 1, further comprising an annular support (4) installed in the gas mixing cavity (11), wherein the bottom of the annular support (4) abuts against the bottom of the gas mixing cavity (11), the outer side and the inner side of the annular support abut against the outer annular wall and the inner annular wall of the gas mixing cavity (11), a vent hole (41) is formed in the position, corresponding to the outlet of the gas channel (12), of the annular support (4), the blocking structure (2) is arranged above the vent hole (41), one side of the blocking structure is connected with the annular support (4), and the other side of the blocking structure abuts against the inner annular wall of the gas mixing cavity (11).

11. Burner with a gas carding unit as in claim 10, characterised in that said blocking structure (2) is formed by partially cutting and stamping said annular seat (4) and then by turning it upwards, said outlet opening (3) being formed between said annular seat (4) and said blocking structure (2).

12. Burner with gas carding unit according to claim 10, characterised in that the gas mixing chamber (11) is provided with a positioning portion (111), the annular support (4) is provided with a fitting portion (42) at a position corresponding to the positioning portion (111), the fitting portion (42) is in fitting connection with the positioning portion (111).