CN214501351U - Energy gathering ring and gas stove - Google Patents

Abstract

The utility model provides an energy-gathering ring and a gas stove, relating to the technical field of kitchen utensils, wherein the energy-gathering ring comprises a first disk body and a second disk body; the first disc body is arranged in the second disc body in a sitting mode; the first tray body and the second tray body are both annular, and the inner ring of the first tray body is hermetically connected with the inner ring of the second tray body to form an inner connecting edge; the outer ring of the first tray body is hermetically connected with the outer ring of the second tray body to form an outer connecting edge; an annular cavity is formed between the first tray body and the second tray body at intervals; one side of the first disc body of the inner connecting edge is provided with a rotating edge which faces the outer connecting edge and surrounds the annular cavity in a rotating way. Through the utility model discloses, alleviated current gather can't utilize the flue gas in the early stage of burning high-efficiently in the circle, and can inhale excessive secondary air and reduce flame temperature, reduce the technical problem of thermal efficiency.

Description

Energy gathering ring and gas stove

Technical Field

The utility model belongs to the technical field of the kitchen utensil technique and specifically relates to an it encircles and gas-cooker to gather.

Background

Along with the continuous and rapid development of economy in China and the gradual depletion of fossil energy, high-efficiency and energy-saving household gas cookers are more and more concerned by consumers, and the key for making the gas cookers efficient and energy-saving is to improve the thermal efficiency of the gas cookers. The 'energy-saving middle and long term planning' indicates that the heat efficiency of a household gas stove must reach more than 60 percent, which is the future development direction of the gas stove. At present, many domestic gas stoves are difficult to meet the standard, and the requirements of energy conservation and emission reduction are not met. Therefore, it is necessary to improve the thermal efficiency of the household gas range.

In order to improve the heat efficiency of the gas stove, in recent years, the use of energy collecting rings is in China, and the heat efficiency of the gas stove is improved by adding the energy collecting rings between a burner and a pot bottom to form a semi-closed combustion space. However, the existing energy-gathering ring does not consider whether the flue gas can be efficiently utilized in the early stage of gas combustion and smoke discharge, and the flue gas entrainment of excessive secondary air can reduce the flame temperature, thereby influencing the thermal efficiency of the gas stove.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an it encloses and gas-cooker to alleviate prior art, gather and enclose the unable high-efficient flue gas that utilizes the burning early stage, and can inhale excessive secondary air and reduce flame temperature, reduce the technical problem of thermal efficiency.

The utility model provides an energy gathering ring, which comprises a first disk body and a second disk body; the first disc body is arranged in the second disc body in a sitting mode; the first tray body and the second tray body are both annular, and the inner ring of the first tray body is hermetically connected with the inner ring of the second tray body to form an inner connecting edge; the outer ring of the first tray body is hermetically connected with the outer ring of the second tray body to form an outer connecting edge; an annular cavity is formed between the first tray body and the second tray body at intervals; one side of the first disc body of the inner connecting edge is provided with a rotating edge which faces the outer connecting edge and surrounds the annular cavity in a rotating way.

Furthermore, the rotating edge is provided with a rotating end which is fixedly connected with the inner connecting edge, and the rotating end is arc-shaped.

Furthermore, the rotating edge also comprises a guide plate connected with the rotating end, and when the energy gathering ring is in a use state, the guide plate is inclined by 40-45 degrees relative to the horizontal plane.

Furthermore, the distance between the rotating edge and the inner connecting edge is 3-8 mm.

Furthermore, the first tray body comprises a top surface, a bottom surface and a side surface connected between the top surface and the bottom surface, the outer ring of the top surface is connected with the outer ring of the second tray body, and the inner ring of the bottom surface is connected with the inner ring of the second tray body.

Furthermore, the inner ring of the top surface is connected with one end of the side surface, and an annular bulge which extends towards the direction of the inner connecting edge and surrounds the annular cavity is formed at the connection position.

Furthermore, the rotary edge, the bottom surface and the side surface form a U-shaped groove for circulating and refluxing the high-temperature flue gas together.

Further, the top surface is inclined at an angle of 5-10 degrees with respect to the horizontal plane.

Further, gather and enclose still including a plurality of pot stabilizer blades that are used for erectting the pot body, the even circumference of a plurality of pot stabilizer blades sets up the outer lane at first disk body.

Further, the energy gathering ring also comprises a plurality of lower supporting feet for supporting, and the plurality of lower supporting feet are uniformly and circumferentially arranged on the outer ring of the second disc body; the number of the lower supporting legs is consistent with that of the pan supporting legs.

Furthermore, the first disc body is in a step shape from the inner ring to the outer ring.

Furthermore, the bottom surface of the second tray body is gradually close to the inner tray body from the outer ring to the inner ring.

The utility model also provides a gas stove, gather the energy circle including combustor and the aforesaid, gather the energy snare and establish the outside at the combustor.

Furthermore, the elevation angle of the turning edge is parallel to the central line of the fire hole of the burner.

Further, the highest point of the turning edge is lower than the height of the fire hole of the burner.

The utility model provides an it encloses and gas-cooker to gather beneficial effect is:

the utility model provides an energy gathering ring and a gas stove, wherein the energy gathering ring comprises a first disk body and a second disk body; the first disc body is arranged in the second disc body in a sitting mode; the first tray body and the second tray body are both annular, and the inner ring of the first tray body is hermetically connected with the inner ring of the second tray body to form an inner connecting edge; the outer ring of the first tray body is hermetically connected with the outer ring of the second tray body to form an outer connecting edge; an annular cavity is formed between the first tray body and the second tray body at intervals; one side of the first disc body of the inner connecting edge is provided with a rotating edge which faces the outer connecting edge and surrounds the annular cavity in a rotating way.

By the utility model, the inner ring and the outer ring of the first tray body and the second tray body are respectively connected in a sealing way to form a sealed annular cavity, and the annular cavity is filled with air, so that the annular cavity can play a role in heat preservation and heat insulation because the air has poorer heat transfer property than a stainless steel pot frame; the rotary edge is arranged at the joint of the inner ring of the first tray body and the inner ring of the second tray body and can be matched with the burner, so that the area of the backflow flue gas generated by the air suction port is reduced, the introduction of secondary air in the outer ring of the burner is increased, the burning of the fire hole in the outer ring is more sufficient, the emission of carbon monoxide in the flue gas is reduced, and the burning heat efficiency is improved. The utility model discloses it can't high-efficiently utilize the flue gas of burning earlier stage to have alleviated current gather can enclose, and can inhale excessive secondary air and reduce flame temperature, the technical problem of thermal efficiency is reduced.

The utility model also provides a gas stove, owing to contain foretell gather all technical characteristics of circle, consequently also possess foretell technological effect.

Drawings

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

Fig. 1 is a three-dimensional structure diagram of an energy collecting ring provided by the embodiment of the present invention;

fig. 2 is a radial cross-sectional view of an energy concentrating ring provided by an embodiment of the present invention;

fig. 3 is a radial cross-sectional view of a gas stove and a revolving edge of an energy collecting ring provided by an embodiment of the invention;

fig. 4 is a radial cross-sectional view of a U-shaped groove of an energy collecting ring according to an embodiment of the present invention.

Icon: 100-a first tray; 110-a turning edge; 111-a swivel end; 112-a guide plate; 120-top surface; 130-a bottom surface; 140-side; 150-annular protrusion; 200-a second tray; 300-an annular cavity; 400-pot support leg; 500-lower foot; 600-a burner; 610-fire hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Along with the continuous development of economy in China, fossil energy is gradually exhausted, and a high-efficiency energy-saving household gas stove is concerned by more and more consumers, so that the key for improving the heat efficiency of the gas stove is to improve the energy efficiency of the gas stove. It can be seen from the "energy saving middle and long term planning", that the heat efficiency of the household gas stove must reach more than 60%, which is also the future development direction of the gas stove. At present, many domestic gas stoves cannot meet the standard, and the requirements of energy conservation and emission reduction are not met. Therefore, it is necessary to improve the thermal efficiency of the household gas range.

In order to improve the thermal efficiency of the gas stove, an energy gathering ring is widely used in recent years, and a semi-closed combustion space is formed by adding the energy gathering ring between a burner and a pot bottom, so that the thermal efficiency of the gas stove is improved. However, the existing energy-gathering ring does not consider whether the flue gas can be efficiently utilized in the early stage of gas combustion and smoke discharge, and the excessive secondary air entrainment of the flue gas can reduce the flame temperature and influence the thermal efficiency of the gas stove.

Based on this, the embodiment of the utility model provides an it encloses and gas-cooker to alleviate current gather can enclose the unable high-efficient flue gas that utilizes the burning early stage of high efficiency, and can inhale excessive secondary air and reduce flame temperature, reduce the technical problem of thermal efficiency.

The present embodiment provides a shaped ring, as shown in fig. 1, comprising a first disc 100 and a second disc 200; the first tray 100 is seated in the second tray 200; the first tray body 100 and the second tray body 200 are both annular, and the inner ring of the first tray body 100 and the inner ring of the second tray body 200 are hermetically connected to form an inner connecting edge; the outer ring of the first tray body 100 and the outer ring of the second tray body 200 are hermetically connected to form an outer connecting edge; as shown in fig. 2, an annular cavity 300 is formed between the first tray body 100 and the second tray body 200 at intervals; the first disc body 100 with the inner connecting edge is provided with a rotating edge 110 which faces the outer connecting edge and surrounds the annular cavity 300.

Through the embodiment of the utility model, the inner ring and the outer ring of the first tray body 100 and the second tray body 200 are respectively connected in a sealing way to form a sealed annular cavity 300, the annular cavity 300 is filled with air, and the annular cavity 300 can play the role of heat preservation and heat insulation because the heat conductivity of the air is poorer than that of a stainless steel pot frame; the turning edge 110 disposed at the junction of the inner ring of the first tray 100 and the inner ring of the second tray 200 can be engaged with the burner 600, so that the area of the backflow flue gas generated by the air suction port is reduced, and the introduction of secondary air in the outer ring of the burner 600 is enhanced, so that the combustion of the outer ring fire hole 610 is more sufficient, the emission of carbon monoxide in the flue gas is reduced, and the combustion heat efficiency is improved. The utility model discloses it can't high-efficiently utilize the flue gas of burning earlier stage to have alleviated current gather can enclose, and can inhale excessive secondary air and reduce flame temperature, the technical problem of thermal efficiency is reduced.

Specifically, the first tray body 100 and the second tray body 200 are both annular, and combustion holes for erecting the combustor 600 are formed in the middle; the first disc body 100 and the second disc layer are arranged at intervals to form a double-layer structure, and a sealed annular cavity 300 is formed. In this structure, the heat generated by the combustion of the gas is concentrated on the upper surface of the first disk body 100 by the conduction of the energy-concentrating ring, and the diffusion of the heat to the outside is reduced. The first tray 100 and the second tray 200 may be integrally formed or may be separately provided. In the case of the split type, the first tray 100 and the second tray 200 are fixed to each other by means of screw connection, welding, or the like, and the first tray 100 is disposed above the second tray 200 at an interval. It should be noted that, whether integrally formed or separately disposed, the inner space between the first tray 100 and the second tray 200 is sealed, in which case the annular cavity 300 can perform the functions of heat insulation and heat preservation.

The combustion hole at the center of the first and second disks 100 and 200 is for installing the burner 600. Illustratively, in this embodiment, the combustion holes are circular holes. The combustion hole may have other shapes depending on the shape of the edge of the burner 600 to be used.

In this embodiment, the turning edge 110 has a turning end 111 connected and fixed to the inner connecting edge, and the turning end 111 is arc-shaped. Specifically, in the using process of the gas stove, the arc-shaped rotary end 111 raises the inclination angle of the bottom surface 130 of the first disc body 100 close to one side of the combustion hole, so that the area of a flowing area of backflow smoke at the air suction port is reduced, pressure difference is generated above and below the air suction port, a negative pressure area at the air suction port is reduced, the smoke is promoted to flow towards the direction of the backflow area, and the suction of secondary air outside the energy collecting ring is enhanced.

Optionally, as shown in fig. 3, the turning edge 110 further includes a guide plate 112 connected to the turning end 111, and when the energy collecting ring is in the use state, the guide plate 112 is inclined by 40-45 degrees with respect to the horizontal plane. Specifically, the guide plate 112 is flat, and the guide plate 112 is connected to the upper side of the arc-shaped turning end 111, and is bent in a radially upward inclined manner in a direction away from the combustion hole.

In this embodiment, the distance between the rotating edge 110 and the inner connecting edge is 3-8 mm. Specifically, the distance between the turning edge 110 and the inner connecting edge refers to the vertical distance between the highest point of the guide plate 112 and the inner connecting edge. If the distance between the rotating edge 110 and the inner connecting edge is too small (less than 3mm), the flue gas generated by combustion is not easy to form a high-temperature flue gas reflux area on the upper surface of the first disc body 100, so that the heat exchange between the flue gas and the upper surface of the first disc body 100 on the energy-collecting ring is reduced; if the distance between the rotating edge 110 and the inner connecting edge is too large (higher than 8mm), the too large distance may prevent the smooth supplement of the secondary air outside the energy collecting ring, so that the gas may not be sufficiently combusted, and the thermal efficiency of the burner 600 may be reduced.

In the present embodiment, the distance between the turning edge 110 and the inner connecting edge is 5mm, and at this distance, the turning edge 110 will not affect the formation of the flue gas recirculation zone, and will not obstruct the supplement of the secondary air. It should be noted that, according to the design of the gas stove and the fire hole 610 of the burner 600, the distance between the turning edge 110 and the inner connecting edge can be adjusted finely according to the actual situation.

In this embodiment, the first tray 100 includes a top surface 120, a bottom surface 130, and a side surface 140 connected therebetween, wherein an outer circle of the top surface 120 is connected to an outer circle of the second tray 200, and an inner circle of the bottom surface 130 is connected to an inner circle of the second tray 200. Specifically, the top surface 120, the bottom surface 130, and the side surfaces 140 are all annular.

In this embodiment, as shown in fig. 4, the inner ring of the top surface 120 is connected to one end of the side surface 140, and the connection portion forms an annular protrusion 150 extending toward the inner connection edge and surrounding the annular cavity 300. Specifically, the annular protrusion 150 is disposed on a side of the side surface 140 close to the top surface 120, and one end of the annular protrusion 150 is connected to the side surface 140 and the other end is connected to the top surface 120. The annular protrusion 150 is disposed on the outflow path of the smoke, and can slow down the outflow of the smoke, so that the smoke flows out more slowly, thereby facilitating the backflow of the smoke.

On the other hand, the area of the smoke backflow area is not changed while the backflow of smoke is enhanced by the annular protrusion 150, and the negative pressure at the air suction port is not further changed, so that the introduction of secondary air is not influenced.

Further, as shown in fig. 4, the turning edge 110, the bottom surface 130 and the side surface 140 together form a U-shaped groove for circulating and returning the high-temperature flue gas. Specifically, the U-shaped groove is formed by sequentially connecting the guide plate 112, the turning end 111, the bottom surface 130, the side surface 140 and the annular protrusion 150, so as to form a space for allowing the smoke to flow back on the upper surface of the first tray 100. The existence of U type groove can let the high temperature flue gas that produces when the gas burning backward flow in U type inslot and form the inner loop, and the flue gas direction of outflow and the flue gas of backward flow is opposite, mutual noninterference, can reduce the resistance each other to increased the dwell time of high temperature flue gas at first dish 100 upper surface, improved the heat exchange capacity of flue gas and first dish 100 upper surface, improved the combustion thermal efficiency of gas-cooker.

Optionally, in this embodiment, the top surface 120 is inclined at an angle of 5-10 degrees with respect to the horizontal plane. Specifically, the top surface 120 is inclined upward by 5 to 10 degrees in a direction radially toward the outer connecting edge with respect to the horizontal plane. The distance between the exhaust position of the smoke and the bottom of the cooker is closer, so that the heating intensity of the high-temperature smoke and the cooker is increased, and the combustion heat efficiency of the gas stove is further improved.

In this embodiment, as shown in fig. 1, the energy gathering ring further includes a plurality of pan support legs 400 for erecting the pan body, and the plurality of pan support legs 400 are uniformly and circumferentially disposed on the outer ring of the first pan body 100. Illustratively, the number of the pan legs 400 is four, and the distance between every two pan legs 400 is 90 degrees. Preferably, in order to enable the cookware erected on the pan support legs 400 to be stressed uniformly and improve the safety and stability of the energy gathering ring, the four pan support legs 400 have the same shape and the same height as the contact position of the cookware.

In this embodiment, as shown in fig. 1, the energy concentrating ring further includes a plurality of lower supporting legs 500 for supporting, and the plurality of lower supporting legs 500 are uniformly and circumferentially disposed at the outer ring of the second disc 200; the number of the lower legs 500 is the same as that of the pan legs 400. Illustratively, the number of the lower support legs 500 is four as the number of the pan support legs 400, the distance between every two lower support legs 500 is 90 degrees, and the position of each lower support leg 500 corresponds to the position of one pan support leg 400. Preferably, in order to enable the energy gathering ring to be stressed uniformly and improve the safety and stability of the energy gathering ring, the four lower support legs 500 are identical in shape, and after erection is completed, the distances between the four lower support legs 500 and the cooking bench are identical.

In this embodiment, the first disc body 100 is stepped in a direction from the inner ring to the outer ring. The stepped structure design improves the contact area of the cookware and the high-temperature flue gas as much as possible on the premise of not influencing the normal erection of the cookware, increases the contact time of the cookware and the high-temperature flue gas, and strengthens the heat exchange between the flue gas and the cookware, thereby improving the combustion heat efficiency.

As shown in fig. 3, the bottom surface 130 of the second tray 200 is gradually closer to the inner tray from the outer rim toward the inner rim. Specifically, the surface of the second plate 200 connected to the inner connecting edge is inclined radially downward in a direction away from the inner connecting edge, which is to further increase the volume of the annular cavity 300 while keeping the bottom surface 130 of the first plate 100 horizontal.

The utility model also provides a gas stove, gather the energy circle including combustor 600 and the aforesaid, gather the energy snare and establish in the outside of combustor 600.

In this embodiment, the angle of elevation of the turning edge 110 is parallel to the centerline of the fire hole 610 of the burner 600. Specifically, the guide plate 112 and the fire hole 610 of the burner 600 are parallel to each other in center line. Under the condition, the smoke flowing out from the fire hole 610 of the burner 600 and the secondary air introduced from the air suction port are parallel to each other and do not interfere with each other, so that the flowing-out of the high-temperature smoke does not influence the flowing-in of the secondary air, the suction quantity of the secondary air is effectively controlled, and the ejection capacity of the secondary air is enhanced.

As shown in FIG. 3, the apex of the edge of gyration 110 is lower than the height of the fire holes 610 of the burner 600. Specifically, the height of the highest point of the guide plate 112 cannot be higher than the height of the fire hole 610. This is because the stability of the fire is not affected in order to avoid the guide plate 112 from obstructing the ejection of the smoke in the fire hole 610.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (15)

1. A power ring, comprising: a first tray body (100) and a second tray body (200);

the first tray body (100) is arranged in the second tray body (200) in a sitting mode; the first tray body (100) and the second tray body (200) are both annular, and an inner ring of the first tray body (100) is hermetically connected with an inner ring of the second tray body (200) to form an inner connecting edge; the outer ring of the first tray body (100) is hermetically connected with the outer ring of the second tray body (200) to form an outer connecting edge; an annular cavity (300) is formed between the first tray body (100) and the second tray body (200) at intervals;

one side of the first disc body (100) of the inner connecting edge is provided with a rotating edge (110) which faces the outer connecting edge and surrounds the annular cavity (300) in a rotating way.

2. The energy gathering ring as claimed in claim 1, wherein the turning edge (110) has a turning end (111) fixedly connected with the inner connecting edge, and the turning end (111) is in the shape of a circular arc.

3. The energy concentrating ring according to claim 2, characterized in that the turning edge (110) further comprises a guide plate (112) connected with the turning end (111), the guide plate (112) being inclined 40-45 degrees with respect to a horizontal plane when the energy concentrating ring is in a use state.

4. The energy concentrating ring according to claim 1, wherein the distance of the turning edge (110) from the inner connecting edge is 3-8 mm.

5. The energy concentrating ring of claim 1, wherein the first disc (100) comprises a top surface (120), a bottom surface (130) and a side surface (140) connected therebetween, wherein an outer circle of the top surface (120) is connected to an outer circle of the second disc (200), and wherein an inner circle of the bottom surface (130) is connected to an inner circle of the second disc (200).

6. The energy concentrating ring according to claim 5, wherein the inner ring of the top surface (120) is connected with one end of the side surface (140), and the connection forms an annular protrusion (150) extending towards the inner connecting edge and surrounding the annular cavity (300).

7. The energy concentrating ring according to claim 6, wherein the turning edge (110), the bottom surface (130) and the side surface (140) together form a U-shaped groove for circulating and returning high-temperature flue gas.

8. The energy concentrating ring according to claim 5, wherein the top surface (120) is inclined at an angle of 5-10 degrees with respect to the horizontal.

9. The energy gathering ring as claimed in claim 1, further comprising a plurality of pan legs (400) for erecting a pan body, the plurality of pan legs (400) being uniformly circumferentially disposed at an outer periphery of the first tray (100).

10. The energy concentrating ring of claim 9, further comprising a plurality of lower support feet (500) for supporting, wherein the plurality of lower support feet (500) are uniformly circumferentially arranged at the outer ring of the second disc (200); the number of the lower supporting feet (500) is the same as that of the pan supporting feet (400).

11. The energy concentrating ring according to claim 1, wherein the first disc (100) is stepped in a direction from the inner ring to the outer ring.

12. The energy concentrating ring of claim 10, wherein the bottom surface (130) of the second disc (200) is gradually closer to the inner disc from the outer ring to the inner ring.

13. A gas burner, characterized in that it comprises a burner (600) and a shaped ring according to any one of claims 1 to 12, said shaped ring being arranged outside said burner (600).

14. Gas burner according to claim 13, characterized in that the angle of elevation of the turned edge (110) is parallel to the centre line of the fire hole (610) of the burner (600).

15. Gas burner according to claim 13, characterized in that the highest point of the turning edge (110) is lower than the height of the fire hole (610) of the burner (600).

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