CN109185883B - Inner ring fire cover, burner and gas stove - Google Patents

Abstract

The invention provides an inner ring fire cover, a burner and a gas stove, relates to the technical field of stoves, and is designed for solving the problems that a burner in the existing stove is single in fire discharging mode and extremely small fire discharging cannot be achieved. The inner ring fire cover comprises a fire cover body, wherein an inner ring main fire hole, a flame stabilizing groove, a first gas distribution channel communicated with the inner ring main fire hole and a second gas distribution channel communicated with the flame stabilizing groove are formed in the fire cover body, and the second gas distribution channel is arranged at intervals with the first gas distribution channel so as to realize independent supply of fuel gas. The burner comprises the inner ring fire cover. The gas stove comprises the burner. The inner ring fire cover, the burner and the gas stove provided by the invention achieve the purpose of extremely low fire of the burner, and meet the extremely low fire cooking requirement of a user.

Description

Inner ring fire cover, burner and gas stove

Technical Field

The invention relates to the technical field of stoves, in particular to an inner ring fire cover, a combustor and a gas stove.

Background

With the continuous improvement of living standard, people have higher and higher requirements on cooking foods, and different cooking modes are generally needed for different food materials to obtain the best taste, for example: some food materials need slow stewing with small fire, while other food materials need quick frying with strong fire.

At present, the traditional burner has a single fire outlet mode, and can only provide single-ring fire or double-ring fire with larger power, so that the situation that the cooking liquor food materials are overflowed or burnt when being heated by using the big fire often occurs when the cooking liquor food materials are required to be stewed slowly by small fire, the daily requirements of users cannot be met, and the great potential safety hazard exists in the use process.

Disclosure of Invention

The first object of the invention is to provide an inner ring fire cover, which solves the technical problem that the existing burner cannot realize the extremely small fire.

The invention provides an inner ring fire cover, which comprises a fire cover body, wherein the fire cover body is provided with an inner ring main fire hole, a flame stabilizing groove, a first gas distribution channel communicated with the inner ring main fire hole and a second gas distribution channel communicated with the flame stabilizing groove, and the second gas distribution channel and the first gas distribution channel are arranged at intervals so as to realize independent supply of fuel gas.

Further, the fire cover body is also provided with a igniting channel which communicates the second gas distribution channel with the main fire hole of the inner ring, and a fire outlet of the igniting channel is opposite to a thermocouple of the burner.

Further, the ignition channel is arranged along the radial direction of the fire cover body.

Further, the fire cover body is further provided with a central channel penetrating through the fire cover body in the vertical direction, the inner ring fire cover further comprises a protective cover arranged on the fire cover body, and the protective cover is configured to Zhi Li above the central channel so that secondary air flows out from the central channel to a gap between the protective cover and the fire cover body.

Further, the protective cover bulges towards the middle part of one surface of the fire cover body so as to form a diversion surface for dispersing secondary air to the periphery.

Further, a guide surface is arranged at the connection position of the second gas distribution channel and the flame stabilizing groove, and extends and inclines from the second gas distribution channel to the opening direction of the flame stabilizing groove.

Further, the fire cover body comprises a circular base body and a T-shaped cover body, wherein the vertical section of the cover body stretches into the core hole of the base body and forms the second gas distribution channel with the inner wall of the core hole, and the horizontal section of the cover body is separated from the base body to form the flame stabilizing groove.

The inner ring main fire hole and the first gas distribution channel are arranged on the seat body.

Further, the inner ring main fire hole forms an included angle with the horizontal plane.

The inner ring fire cover has the beneficial effects that:

the second gas distribution channel which is communicated with the flame stabilizing groove and is spaced from the first gas distribution channel is arranged on the flame cover body of the inner ring flame cover, so that independent gas supply to the flame stabilizing groove is realized.

The inner ring fire cover is in the working process: the fuel gas enters through the first gas distribution channel, and after being ignited by the ignition device of the burner, the inner ring main flame with larger firepower is obtained at the inner ring main flame hole connected with the first gas distribution channel; when the minimum fire with smaller firepower is needed, the fuel gas supply in the first gas distribution channel is cut off, and fuel gas is introduced into the second gas distribution channel, and then the fuel gas in the second gas distribution channel flows out through the flame stabilizing groove and is ignited by the ignition device of the burner, so that the minimum fire flame for heating is formed.

The flame stabilizing groove in the inner ring fire cover ensures the temperature of the root part of the main fire hole, has low air flow speed, reduces unfavorable working conditions such as fire separation, fire release and the like, and can ensure that the flamed inner ring main fire hole can discharge fire again when part of the inner ring main fire hole is extinguished, thereby achieving the purpose of stabilizing flame; on the other hand, the inner ring fire cover takes the flame stabilizing groove as an air outlet channel of the minimum fire, and realizes the combustion of the minimum fire at the flame stabilizing groove through independent gas supply, thereby achieving the purpose of discharging the minimum fire of the burner and meeting the cooking requirement of the minimum fire of a user.

By the arrangement, the purpose of extremely low fire discharging can be achieved without additionally arranging special extremely low fire discharging holes on the inner ring fire cover, the structure of the inner ring fire cover is simplified, and the manufacturing cost of the inner ring fire cover is saved.

In addition, the inner ring fire cover realizes the form of extremely small fire by utilizing the flame stabilizing groove arranged at the lateral direction of the inner ring fire cover, so that the air outlet resistance in the process of extremely small fire discharging is greatly reduced, thereby enabling fuel gas to be smoothly sprayed out to the lateral direction, reducing the condition of insufficient combustion caused by unsmooth air outlet, optimizing the combustion working condition, reducing the environmental pollution and greatly improving the safety performance. In addition, the mode that the fire outlet hole with the minimum fire is arranged at the lateral direction of the fire cover body greatly reduces the risk of blockage caused by foreign matters, ensures the reliability of the minimum fire outlet, and reduces the frequency of cleaning and maintaining the inner ring fire cover in the later period.

The second purpose of the invention is to provide a burner, which solves the technical problems that the existing burner has a single firing mode and can not realize extremely low firing.

The burner provided by the invention comprises a burner, a gas distribution seat arranged on the burner, a fire cover assembly arranged on the gas distribution seat and a thermocouple for measuring temperature, wherein the fire cover assembly comprises an outer ring fire cover and the inner ring fire cover.

The furnace end is provided with a minimum fire gas inlet which is communicated with the second gas distribution channel through the gas distribution seat.

The furnace head is also provided with an inner ring injection pipe for supplying air to the inner ring fire cover and an outer ring injection pipe for supplying air to the outer ring fire cover, and the inner ring injection pipe is communicated with the first air distribution channel through the air distribution seat.

The burner has the beneficial effects that:

the burner is in the working process: at the outer ring fire cover, the fuel gas is introduced through the outer ring injection pipe and flows to the outer ring main fire hole of the outer ring fire cover through the gas dividing seat so as to form outer ring flame with large firepower; at the inner ring fire cover, the fuel gas is introduced through the inner ring injection pipe, flows into the first gas distribution channel through the gas distribution seat and then flows to the inner ring main fire hole to form inner ring flame with smaller firepower; when the burner is required to be used in a minimum fire state, the fuel gas on the outer ring injection pipe and the inner ring injection pipe is cut off, and simultaneously, the fuel gas is introduced from a minimum fire fuel gas inlet on the burner head, so that the fuel gas flows to a second gas separation channel to form a minimum fire at a flame stabilizing groove.

By arranging the inner ring fire cover in the burner, the burner has all advantages of the inner ring fire cover correspondingly, and the inner ring fire cover is not described in detail herein.

In addition, the burner has various cooking firepower forms, achieves the aim of extremely low fire, overcomes the defect of overflow or burning of soup and food materials caused by larger fire output of the existing burner, meets various use requirements of users, and has higher safety performance.

The third purpose of the invention is to provide a gas stove, which aims to solve the technical problems that the burner in the existing stove has a single fire discharging mode and can not realize the minimum fire discharging.

The gas stove provided by the invention comprises at least one burner.

The gas stove provided by the invention has the beneficial effects that:

By arranging the above burner in the gas stove, the gas stove has all advantages of the above burner, and will not be described in detail here.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings needed in the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front cross-sectional view of an inner ring fire cover provided by an embodiment of the invention;

FIG. 2 is a top view block diagram of a combustor provided by an embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

Fig. 4 is a partial enlarged view at B in fig. 3, in which arrows indicate the flow directions of the air streams in the respective channels.

Reference numerals:

100-an inner ring fire cover; 200-burner; 300-gas distributing seat; 400-outer ring fire cover; 500-thermocouple;

110-fire cover body; 120-protecting cover;

111-an inner ring main fire hole; 112-a first gas separation channel; 113-flame stabilizing grooves; 114-a second gas separation channel; 115-firing channels; 116-central passage; 117-flow-guiding surface;

210-an inner ring injection pipe; 220-an outer ring injection pipe;

310-very small fire gas inlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "horizontal", "vertical", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "mounted" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, the present embodiment provides an inner ring fire cover 100 including a fire cover body 110. Specifically, the fire cover body 110 is provided with an inner ring main fire hole 111, a flame stabilizing groove 113, a first gas distribution channel 112 communicated with the inner ring main fire hole 111, and a second gas distribution channel 114 communicated with the flame stabilizing groove 113, wherein the second gas distribution channel 114 and the first gas distribution channel 112 are arranged at intervals to realize independent supply of fuel gas.

As shown in fig. 4, the inner ring fire cover 100 is in operation: the fuel gas enters through the first gas distribution channel 112, and after being ignited by the ignition device of the burner, the fuel gas obtains inner ring main flames with larger firepower at the inner ring main fire holes 111 connected with the first gas distribution channel 112; when a small fire with smaller fire power is needed, the gas supply in the first gas distribution channel 112 is cut off, and the gas is introduced into the second gas distribution channel 114, and then the gas in the second gas distribution channel 114 flows out through the flame stabilizing groove 113 and is ignited by the ignition device of the burner to form a small fire flame for heating.

The flame stabilizing groove 113 in the inner ring fire cover 100 ensures the temperature of the root of the main fire hole, has low air flow speed, reduces unfavorable working conditions such as fire separation, fire release and the like, and can ensure that the flame stabilizing groove 113 can ensure the flameout inner ring main fire hole 111 to re-discharge fire when part of the fire holes of the inner ring main fire hole 111 are extinguished, thereby achieving the aim of stabilizing flame; on the other hand, the inner ring fire cover 100 takes the flame stabilizing groove 113 as an air outlet channel of the minimum fire, and realizes the combustion of the minimum fire at the flame stabilizing groove 113 through independent gas supply, thereby achieving the purpose of discharging the minimum fire of the burner and meeting the cooking requirement of the minimum fire of a user.

By the arrangement, the purpose of extremely small fire discharging can be achieved without additionally arranging special extremely small fire discharging holes on the inner ring fire cover 100, the structure of the inner ring fire cover 100 is simplified, and the manufacturing cost of the inner ring fire cover is saved.

In addition, the inner ring fire cover 100 utilizes the flame stabilizing groove 113 arranged at the lateral direction thereof to realize the form of extremely small fire, so that the air outlet resistance in the process of extremely small fire is greatly reduced, thereby enabling the fuel gas to be smoothly sprayed out to the lateral direction, reducing the condition of insufficient combustion caused by unsmooth air outlet, optimizing the combustion working condition, reducing the environmental pollution and greatly improving the safety performance. In addition, the mode that the fire outlet holes of the minimum fire are arranged at the lateral direction of the fire cover body 110 greatly reduces the risk of blockage caused by foreign matters, ensures the reliability of the minimum fire outlet, and reduces the frequency of cleaning and maintaining the inner ring fire cover 100 in the later period.

Referring to fig. 1, in the present embodiment, the first air separation channel 112 and the second air separation channel 114 are disposed in a vertical state, and the second air separation channel 114 is located inside the first air separation channel 112. By setting the first gas separation channel 112 and the second gas separation channel 114 to be vertical, the flow path of the fuel gas in each channel is shortened, so that the fuel gas can rapidly reach the inner ring main fire hole 111 and the flame stabilizing groove 113, and the ignition efficiency is improved.

It should be noted that, in the present embodiment, the first air distribution channel 112 and the second air distribution channel 114 may also be disposed in an approximately vertical state.

With continued reference to fig. 1 and 4, in the present embodiment, the fire cover body 110 is further provided with a pilot channel 115 that communicates the second gas distribution channel 114 with the inner ring main fire hole 111, where a fire outlet of the pilot channel 115 is opposite to the thermocouple 500 of the burner.

By introducing the fuel gas in the second gas separation channel 114 to the inner ring main fire hole 111 for combustion, the inner ring fire cover 100 is ensured to transfer the combustion heat to the thermocouple 500 reliably under the independent working state of the minimum fire, and the self-extinguishing condition caused by the fact that the thermocouple 500 cannot be burned by the minimum fire is avoided, so that the combustor has stable combustion working condition in the working state of the minimum fire.

In addition, the form of arranging the ignition channel 115 between the second gas distribution channel 114 and the inner ring main fire hole 111 reduces the arrangement height of the thermocouple 500, thereby preventing insufficient combustion (such as yellow flame) caused by shielding of the inner ring main fire hole 111 by the thermocouple 500 and ensuring the working reliability of the burner.

Specifically, in the present embodiment, the ignition passages 115 are provided along the radial direction of the fire cover body 110. By the arrangement, the setting length of the ignition channel 115 is greatly shortened, so that in the extremely small fire working state, the fuel gas in the second gas distribution channel 114 can flow to the inner ring main fire hole 111 at the first time, and the timeliness of the temperature measurement of the thermocouple 500 is ensured.

With continued reference to fig. 1 and 4, in the present embodiment, the fire cover body 110 may further have a central channel 116 extending therethrough in the up-down direction, and the inner ring fire cover 100 may further include a protective cover 120 disposed on the fire cover body 110. Wherein the shield cover 120 is configured to stand above the central passage 116 such that secondary air flows out from the central passage 116 toward a gap between the shield cover 120 and the flame cover body 110.

By the arrangement, secondary air supplement to a closed area between the bottom of the cooker and the inner ring flame in the working process of the burner is realized, so that fuel gas can be fully combusted on the premise of not increasing the height of the cooker, heat loss is reduced, and the heat efficiency is higher. And the full combustion of the fuel gas greatly reduces the emission of carbon monoxide and further optimizes the combustion working condition.

With continued reference to fig. 1 and 4, in the present embodiment, the protecting cover 120 bulges toward the middle of one surface of the fire cover body 110 to form a diversion surface for dispersing secondary air around.

By the arrangement, secondary air can be split around the raised part after entering from the central passage 116, so that the uniformity of secondary air supplementing is ensured.

With continued reference to fig. 1 and 4, in the present embodiment, a guide surface 117 is disposed at a connection position between the second air distribution channel 114 and the flame stabilizing slot 113, and specifically, the guide surface 117 extends from the second air distribution channel 114 to incline toward the opening direction of the flame stabilizing slot 113.

By the arrangement, a certain guiding effect is achieved for the flow of the fuel gas from the second gas distribution channel 114 to the flame stabilizing groove 113, so that the flow process of the fuel gas is stable, and the resistance of the fuel gas in the process of flowing to the flame stabilizing groove 113 is reduced, thereby ensuring the working reliability of the inner ring fire cover 100 in the embodiment.

With continued reference to fig. 1 and 4, in the present embodiment, the fire cover body 110 may include a circular base and a T-shaped cover, wherein a vertical section of the cover extends into a core hole of the base and forms a second air distribution channel 114 with an inner wall of the core hole, and a horizontal section of the cover is spaced from the base to form a flame stabilizing slot 113. And, the inner ring main fire hole 111 and the first gas distribution passage 112 are opened on the seat body.

The fire cover body 110 is provided in a split type structure, so that the cover body is assembled to the seat body to naturally form the flame stabilizing groove 113 and the second air dividing channel 114, thereby not only reducing the manufacturing difficulty of the fire cover body 110, but also simplifying the manufacturing process thereof.

Specifically, in this embodiment, the inner wall of the core hole of the base body may be provided with a limiting boss, and the corresponding outer wall of the vertical section of the cover body may be provided with a step, so that after the cover body is assembled to the base body, the flame stabilizing slot 113 and the second air distribution channel 114 may be formed between the cover body and the base body.

With continued reference to fig. 1 and 4, in this embodiment, the inner ring main fire hole 111 is disposed at an angle with respect to the horizontal plane. By the arrangement, the gas outlet pressure at the inner ring main fire hole 111 is reduced, so that the gas outlet process of the gas in the first gas distribution channel 112 is smoother, the inner ring main flame is concentrated, and the heat efficiency of the burner in the working process is further improved.

As shown in fig. 2 and 3, the present embodiment further provides a burner, which includes a burner 200, a gas distribution base 300 provided at the burner 200, a fire cover assembly installed at the gas distribution base 300, and a thermocouple 500 for measuring temperature, wherein the fire cover assembly includes an outer ring fire cover 400 and the inner ring fire cover 100.

With continued reference to fig. 2 and 3, in particular, the burner 200 is provided with a minimum fire gas inlet 310, and the minimum fire gas inlet 310 communicates with the second gas distribution channel 114 through the gas distribution seat 300. And, the furnace end 200 is further provided with an inner ring injection pipe 210 for supplying air to the inner ring fire cover 100 and an outer ring injection pipe 220 for supplying air to the outer ring fire cover 400, wherein the inner ring injection pipe 210 is communicated with the first air distribution channel 112 through the air distribution seat 300.

The burner is in the working process: at the outer ring fire cover 400, the gas is introduced through the outer ring injection pipe 220, flows to the outer ring main fire hole of the outer ring fire cover 400 through the gas dividing seat 300, so as to form an outer ring flame with large fire power; at the inner ring fire cover 100, the fuel gas is introduced through the inner ring injection pipe 210, flows into the first gas distribution channel 112 through the gas distribution seat 300, and then flows to the inner ring main fire hole 111 to form an inner ring flame with smaller firepower; when the burner is required to be used in a very low fire state, the fuel gas on the outer ring injection pipe 220 and the inner ring injection pipe 210 is cut off, and simultaneously, the fuel gas is introduced from the very low fire fuel gas inlet 310 on the burner 200, so that the fuel gas flows to the second gas distribution channel 114 to form very low fire at the flame stabilizing groove 113.

By providing the inner ring fire cover 100 in the burner, the burner has all advantages of the inner ring fire cover 100, and will not be described in detail herein.

In addition, the burner has various cooking firepower forms, achieves the aim of extremely low fire, overcomes the defect of overflow or burning of soup and food materials caused by larger fire output of the existing burner, meets various use requirements of users, and has higher safety performance.

With continued reference to fig. 2, in this embodiment, the number of outer ring ejector pipes 220 may be two, specifically, the inner ring ejector pipe 210 is disposed between the two outer ring ejector pipes 220, and the three pipes are disposed side by side on a horizontal plane.

In addition, the embodiment also provides a gas stove, which comprises the burner.

By arranging the above burner in the gas stove, the gas stove has all advantages of the above burner, and will not be described in detail here.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present invention.

Claims (10)

1. An inner ring fire cover for a burner comprises a fire cover body (110), wherein the fire cover body (110) is provided with an inner ring main fire hole (111), a flame stabilizing groove (113) and a first gas distribution channel (112) communicated with the inner ring main fire hole (111), and the inner ring fire cover is characterized in that the fire cover body (110) is also provided with a second gas distribution channel (114) communicated with the flame stabilizing groove (113), and the second gas distribution channel (114) and the first gas distribution channel (112) are arranged at intervals to realize independent supply of fuel gas;

The flame stabilizing groove (113) is arranged at the lateral direction of the inner ring fire cover;

The burner comprises a burner head (200), a gas distribution seat (300) arranged on the burner head (200), a fire cover assembly arranged on the gas distribution seat (300) and a thermocouple (500) for measuring temperature, wherein the fire cover assembly comprises an outer ring fire cover (400) and an inner ring fire cover (100);

the furnace end (200) is provided with a very small fire gas inlet (310), and the very small fire gas inlet (310) is communicated with the second gas distribution channel (114) through the gas distribution seat (300);

The furnace end (200) is further provided with an inner ring injection pipe (210) for supplying air to the inner ring fire cover (100) and an outer ring injection pipe (220) for supplying air to the outer ring fire cover (400), and the inner ring injection pipe (210) is communicated with the first air distribution channel (112) through the air distribution seat (300).

2. The inner ring fire cover according to claim 1, wherein the fire cover body (110) is further provided with a firing channel (115) for communicating the second gas distribution channel (114) with the inner ring main fire hole (111), and a fire outlet of the firing channel (115) is opposite to a thermocouple (500) of the burner.

3. The inner ring fire cover according to claim 2, wherein the ignition channels (115) are arranged in a radial direction of the fire cover body (110).

4. The inner ring fire cover according to claim 1, wherein the fire cover body (110) is further provided with a central passage (116) penetrating therethrough in an up-down direction, the inner ring fire cover (100) further comprises a protective cover (120) provided to the fire cover body (110), and the protective cover (120) is configured to Zhi Li above the central passage (116) so that secondary air flows out from the central passage (116) to a gap between the protective cover (120) and the fire cover body (110).

5. The inner ring fire cover according to claim 4, wherein the protective cover (120) bulges toward a center of one face of the fire cover body (110) to form a diversion surface for dispersing secondary air around.

6. The inner ring fire cover according to claim 1, wherein a guide surface (117) is provided at a connection position of the second gas distribution channel (114) and the flame holding tank (113), and the guide surface (117) extends and inclines from the second gas distribution channel (114) to an opening direction of the flame holding tank (113).

7. The inner ring fire cover according to any one of claims 1-6, wherein the fire cover body (110) comprises a ring-shaped seat body and a "T" -shaped cover body, wherein a vertical section of the cover body extends into a core hole of the seat body and forms the second gas distribution channel (114) with an inner wall of the core hole, and a horizontal section of the cover body is spaced from the seat body to form the flame holding groove (113);

The inner ring main fire hole (111) and the first gas distribution channel (112) are arranged on the base body.

8. An inner ring fire cover according to any one of claims 1-6, wherein the inner ring main fire hole (111) is arranged at an angle to the horizontal.

9. A burner characterized by comprising a burner (200), a gas distribution seat (300) provided to the burner (200), a fire cover assembly mounted to the gas distribution seat (300) and a thermocouple (500) for temperature measurement, wherein the fire cover assembly comprises an outer ring fire cover (400) and an inner ring fire cover (100) according to any one of claims 1-8;

the furnace end (200) is provided with a very small fire gas inlet (310), and the very small fire gas inlet (310) is communicated with the second gas distribution channel (114) through the gas distribution seat (300);

The furnace end (200) is further provided with an inner ring injection pipe (210) for supplying air to the inner ring fire cover (100) and an outer ring injection pipe (220) for supplying air to the outer ring fire cover (400), and the inner ring injection pipe (210) is communicated with the first air distribution channel (112) through the air distribution seat (300).

10. A gas range comprising at least one burner according to claim 9.