CN220453653U - Energy-saving upper air inlet combustor with uniform firepower - Google Patents

Abstract

The utility model discloses an energy-saving upper air inlet burner with uniform firepower, which belongs to the field of burners and comprises a base; a stove base arranged on the base; the outer fire cover is arranged on the outer air channel of the fire stove seat and is matched with the outer air channel to form an outer fire cavity; the inner fire cover is arranged on the inner gas channel of the fire stove seat and is matched with the inner gas channel to form an inner fire cavity, and the outer peripheral surface of the inner fire cover is provided with a central inner fire outlet communicated with the inner fire cavity; an outer ring inner fire outlet hole which is communicated with the outer fire cavity and is obliquely upwards arranged in the center of the inner ring is formed in the inner side wall of the outer fire cover, and the aperture of the central inner fire outlet hole is reduced; and the heat load of the central inner fire hole in the strong fire state is compensated by the fire of the inner fire hole of the outer ring. The utility model has the effects of large power range, uniform firepower and energy conservation: the design that outer fire lid was seted up in outer lane of this scheme adopted goes out the fire hole realizes the effect of the whole power scope of increase combustor.

Description

Energy-saving upper air inlet combustor with uniform firepower

Technical Field

The utility model relates to the technical field of burners, in particular to an energy-saving upper air inlet burner with uniform firepower.

Background

The upper air inlet combustor for the gas stove has the advantages that the structure is simpler, the air-mixed gas is distributed more uniformly in the annular channel, the air injection capacity is stronger, the firepower is larger, and the thermal efficiency is improved.

The existing upper air inlet burner is generally provided with an outer ring fire outlet hole on an outer fire cover, and a central fire outlet hole is arranged on the periphery of an inner fire cover, namely a double-ring fire structure, so that when cooking foods by heating kitchen ware, the burner can achieve a certain heat load in order to ensure that the burner is in a strong fire state, the caliber of the central fire outlet hole of the inner fire cover is generally larger, so that the burner is in a fire cooking state or a heat preservation state, namely only the central fire outlet hole of the inner fire cover is in a fire outlet state, and the heat load of the burner is still larger, thereby causing Shang Yi in a pot to overflow or burn.

Disclosure of Invention

The utility model aims to provide an energy-saving upper air inlet burner with uniform firepower, which has the effects of larger power range, uniform firepower and energy conservation.

The technical aim of the utility model is realized by the following technical scheme:

an energy-efficient upper air intake burner with uniform fire power, comprising:

a base in which a first air intake passage and a second air intake passage are formed;

the fire stove seat is arranged on the base, and the lower side of the fire stove seat is respectively provided with an outer fire injection pipe communicated with the first air inlet channel and an inner fire injection pipe communicated with the second air inlet channel; the upper side of the stove seat is provided with an annular outer air channel communicated with the outer fire injection pipe and an inner air channel which is arranged in the inner ring of the outer air channel and communicated with the inner fire injection pipe;

the outer fire cover is arranged on the outer air channel and is matched with the outer air channel to form an outer fire cavity, and a plurality of outer ring outgoing fire holes communicated with the outer fire cavity are formed in the outer side wall of the outer fire cover;

the inner fire cover is arranged on the inner gas channel and is matched with the inner gas channel to form an inner fire cavity, a plurality of central inner fire outlets communicated with the inner fire cavity are formed in the outer peripheral surface of the inner fire cover, and the central inner fire outlets are inclined outwards and upwards;

the inner side wall of the outer fire cover is provided with a plurality of outer ring inner fire holes which are communicated with the outer fire cavity and are obliquely upwards arranged in the center of the inner ring, and the aperture of the central inner fire hole is reduced; and the heat load of the central inner fire outlet hole in the strong fire state is compensated by the fire outlet of the inner fire outlet hole of the outer ring.

Further, the outer air channel is provided with a downward inclined diversion inclined plane, the diversion inclined plane is arranged on the other side of the outlet extending end of the outer fire injection pipe, and one end of the diversion inclined plane, which is higher, is adjacent to the outlet of the outer fire injection pipe.

Further, the calibers of the center inner fire hole, the outer ring inner fire hole and the outer ring outer fire hole become larger step by step.

Further, flame stabilizing holes communicated with the outer flame cavity are formed between every two adjacent outer ring inner flame outlet holes, the caliber of each flame stabilizing hole is smaller than that of each outer ring inner flame outlet hole, and the setting direction of each flame stabilizing hole is consistent with that of each outer ring inner flame outlet hole.

Further, a transition inclined plane is arranged between the diversion inclined plane and the outlet of the external fire injection pipe, and extends from the outlet of the external fire injection pipe to the upper end of the diversion inclined plane.

Further, the drainage surface inclined downwards from outside to inside is formed on the inner side wall of the outer fire cover, and is positioned on the lower side of the fire outlet hole in the outer ring, and the drainage surface is used for guiding oil to fall to the base.

Further, a connecting plate is arranged between the outer air channel and the inner air channel, a plurality of oxygen supply ports are formed in the connecting plate and communicated with the upper side and the lower side of the stove base to form an oxygen supply channel, and the oxygen supply ports are uniformly distributed between the outer air channel and the inner air channel.

Further, the junction of connecting plate and outer air channel inside wall is provided with a plurality of bellied drainage arch that makes progress, and a plurality of drainage arch equipartition surrounds the oxygen supply channel at the edge of connecting plate.

Further, the edge of the upper end of the inner gas channel is provided with a positioning protrusion protruding upwards, and the peripheral surface of the inner fire cover is provided with a positioning groove matched with the positioning protrusion.

Further, the outer side surface of the outer fire cover gradually inclines downwards from inside to outside, and the outer ring outer fire hole inclines upwards from inside to outside.

In summary, the utility model has the following beneficial effects:

1. according to the utility model, the temperature of the bottom of the cooker is more uniform through the flames distributed in multiple stages, and meanwhile, the power of the flame in the inner ring of the burner can be increased through the flames sprayed out through the flame outlet holes in the outer ring, so that the overall power of the burner is increased. Meanwhile, as the flame power of the flame outlet hole in the outer ring is supplemented, the diameter of the flame outlet hole in the center can be kept in the original size or designed to be smaller, so that the upper power limit of the burner is improved, the lower power limit of the burner is kept or reduced, and the power range of the burner is enlarged.

2. According to the utility model, through the guide inclined plane, upward flowing from the outlet of the external fire injection pipe and gas flowing along the extending direction far away from the external fire injection pipe can be guided and accelerated by the guide inclined plane to fill the external gas channel more quickly, so that the operation efficiency of the burner is improved.

3. The flame stabilizing device ensures that the flame is dislocated by the design of the big and small holes, can effectively play a role in stabilizing the flame, and improves the beauty of the flame. In addition, in the embodiment, the flame stabilizing hole and the inner flame outlet hole of the outer ring are positioned in the same plane range, so that the height of the outer flame cover can be reduced, and the whole volume and occupied space are reduced.

4. According to the utility model, the oil on the kitchen ware is guided to accurately fall to the base through the drainage surface, so that a user can intensively process the oil, and the cleanliness of the surrounding environment of the burner is improved.

5. The utility model guides air flow through the drainage bulge, prevents air from being disturbed and achieves the effect of stabilizing flow.

6. According to the utility model, the positioning protrusion is inserted into the positioning groove to realize accurate installation of the outer fire cover, so that a foolproof effect is achieved.

7. According to the utility model, the outer side surface of the outer fire cover gradually inclines downwards from inside to outside, and the outer ring outgoing fire hole inclines upwards from inside to outside. Therefore, the obstruction of the upper end of the outer fire cover to the flame when the outer ring goes out of the fire hole to spray the flame outwards is reduced, the flame sprayed out of the outer ring goes out of the fire hole can fall on the edge of the bottom of the kitchen ware straighter, and the energy of the flame is utilized more effectively.

Drawings

Fig. 1 is a schematic view of the overall structure of the present utility model.

Fig. 2 is a cross-sectional view of the present utility model.

Fig. 3 is an exploded view of the present utility model.

Fig. 4 is a schematic structural view of the outer fire cover.

Fig. 5 is a schematic view of the front structure of the burner base.

Fig. 6 is a schematic view of the bottom surface structure of the burner base.

Fig. 7 is a schematic view of the structure of the inner fire cover.

In the figure: 1. a base; 11. a first air intake passage; 12. a second intake passage; 13. an oil receiving groove;

2. a fire stove base; 21. an external fire injection pipe; 211. a flow guiding surface; 22. an inner fire injection pipe; 23. an external air passage; 24. an inner gas passage; 25. a diversion inclined plane; 26. a transition inclined plane; 27. a connecting plate; 28. a drainage bulge; 29. positioning the bulge;

3. an outer fire cover; 31. the outer ring goes out of the fire hole; 32. a fire hole is formed in the outer ring; 33. flame stabilizing holes; 34. a drainage surface; 35. an external fire trough;

4. an inner fire cover; 41. a fire hole is formed in the center; 42. a positioning groove; 43. a bonding part;

5. an external fire cavity; 6. an internal fire cavity; 7. and an oxygen supply port.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 7, an energy-saving upper air intake burner with uniform fire power comprises a base 1, a burner base 2, an outer burner cover 3 and an inner burner cover 4. The base 1 is internally provided with a first air inlet channel 11 and a second air inlet channel 12, and the first air inlet channel 11 and the second air inlet channel 12 are connected with a gas storage device such as a gas tank. The fire stove seat 2 is arranged on the base 1, an outer fire injection pipe 21 communicated with the first air inlet channel 11 and an inner fire injection pipe 22 communicated with the second air inlet channel 12 are respectively arranged on the lower side of the fire stove seat 2, an annular outer air channel 23 communicated with the outer fire injection pipe 21 and an inner air channel 24 arranged in the inner ring of the outer air channel 23 and communicated with the inner fire injection pipe 22 are arranged on the upper side of the fire stove seat 2, so that fuel gas can be divided into multiple parts to flow and diffuse, a plurality of flame areas can be generated, and kitchen tools are conveniently and uniformly heated. The outer fire cover 3 is arranged on the outer air channel 23 and is matched with the outer air channel 23 to form the outer fire cavity 5. The inner fire cover 4 is arranged on the inner air channel 24 and is matched with the inner air channel 24 to form the inner fire cavity 6. In this embodiment, the outer fire cover 3 and the inner fire cover 4 are preferably arranged on the corresponding outer air channel 23 and the outer air channel 23, so that a user can adjust and replace the outer fire cover 3 and the inner fire cover 4.

Referring to fig. 1 and 2, in this embodiment, an annular outer fire groove 35 is formed at the lower end of the outer fire cover 3, the outer fire groove 35 and the outer air channel 23 are combined to form an outer fire cavity, and a plurality of outer ring inner fire outlet holes 32 communicated with the outer fire groove 35 and the outer fire cavity 5 are formed in the inner side wall of the outer fire cover 3; the outer peripheral surface of the inner fire cover 4 is provided with a plurality of central inner fire outlet holes 41 communicated with the inner fire cavity 6, the aperture of the central inner fire outlet holes 41 is L2, and L2 is smaller than the caliber L1 of the central fire outlet of the inner fire cover of the existing burner; the outer ring inner fire hole 32 and the center inner fire hole 41 are arranged in an inclined manner. When the kitchen ware is placed on the burner, flames ejected from the outer ring inner fire hole 32 and the center inner fire hole 41 are ejected to the middle of the bottom surface of the kitchen ware. In this embodiment, the central inner fire hole 41 is inclined upward toward the outer side, the outer ring inner fire hole 32 is inclined upward toward the inner ring center, and the heat load of the central inner fire hole 41 is compensated by the fire of the outer ring inner fire hole 32. Therefore, the temperature of the bottom of the cooker is more uniform through the flames distributed in multiple stages, and meanwhile, the power of the inner ring flame of the burner in a strong fire state can be increased through the flames sprayed out through the fire outlet holes 32 in the outer ring, so that the overall power of the burner is increased. Meanwhile, the diameter of the central inner fire hole 41 can be kept to be the original size or designed to be smaller due to the flame power supplement of the outer ring inner fire hole 32, so that the upper power limit of the burner is improved, the lower power limit of the burner is kept or reduced, and the power range of the burner is enlarged.

Namely, when the kitchen ware needs to be in a fierce fire state, the burner can also increase the maximum power through the action of the heat load compensation of the fire outlet hole 32 in the outer ring so as to achieve the required fierce fire power, thereby realizing the cooking requirement required by a user. When the kitchen ware needs to be in a heat preservation or fire cooking state, the flame sprayed out of the central inner fire hole 41 can be in a smaller power range, so that the effects of fire preservation and energy saving are achieved, and soup in the pot is not easy to overflow.

Referring to fig. 1 and 2, the outer side wall of the outer fire cover 3 is provided with an outer ring outgoing fire hole 31 communicated with the outer fire groove 35 and the outer fire cavity 5, and the calibers of the inner central fire hole 41, the outer ring inner fire hole 32 and the outer ring outgoing fire hole 31 are gradually increased step by step, so that the power of the three generated tricyclic flame can be gradually increased, and a user can select and adjust more proper flame power according to actual demands.

Referring to fig. 2 and 4, flame stabilizing holes 33 for communicating the outer flame groove 35 and the outer flame cavity 5 are formed between two adjacent outer ring inner flame outlet holes 32, the caliber of the flame stabilizing holes 33 is smaller than that of the outer ring inner flame outlet holes 32, and the setting direction of the flame stabilizing holes 33 is consistent with that of the outer ring inner flame outlet holes 32. In the combustion process, the large holes need more oxygen, the small holes need less oxygen, and the flame size is misplaced, so that the flame stabilizing effect can be effectively achieved. In addition, because the intervals among the holes are relatively smaller, if the holes are the same, the shape of the burning flame is poorer, and the design of the big and small holes can improve the beauty of the flame. In this embodiment, the flame stabilizing hole 33 and the outer ring inner flame outlet hole 32 are located in the same plane range, so that the height of the outer flame cover 3 can be reduced, and the overall volume and occupied space can be reduced.

Further, referring to fig. 1 and 2, a drainage surface 34 inclined downward from outside to inside is formed on the inner side wall of the outer fire cover 3, and the drainage surface 34 is located at the lower side of the fire hole 32 in the outer ring, and the drainage surface 34 is used for guiding oil on the kitchen ware to accurately fall to the base 1, so that a user can intensively process the oil, and the cleanliness of the surrounding environment of the burner is improved.

As shown in fig. 2, the outer side surface of the outer fire cover 3 is gradually inclined downward from inside to outside, and the outer ring of the outer fire holes 31 is inclined upward from inside to outside. Therefore, the obstruction of the upper end of the outer fire cover 3 to the flame when the outer ring of the outer fire hole 31 is used for spraying the flame outwards is reduced, the flame sprayed by the outer ring of the outer fire hole 31 can fall on the edge of the bottom of the kitchen ware straighter, and the energy of the flame is utilized more effectively.

As shown in fig. 5, a guide surface 211 inclined upward for guiding the fuel gas is provided at the junction of the outer air passage 23 and one side of the outlet of the outer flame injection pipe 21 along the extending direction of the outer flame injection pipe 21. Thereby further guiding the smooth flow of the fuel gas.

Further, referring to fig. 3 and 5, the outer air channel 23 is provided with a downward inclined guiding inclined plane 25, the other side of the outlet extending end of the outer fire injection pipe 21 is provided with a higher end of the guiding inclined plane 25 adjacent to the outlet of the outer fire injection pipe 21, and the guiding surface 211 is opposite to the corresponding guiding inclined plane 25. That is, the higher end of the diversion slope 25 is arranged on one side of the outlet of the outer fire injection pipe 21 far away from the extending direction of the outer fire injection pipe 21, so that the upward flow from the outlet of the outer fire injection pipe 21 and the gas flowing along the extending direction far away from the outer fire injection pipe 21 can be guided and accelerated by the diversion slope 25 to fill the outer gas channel 23 more quickly, and the operation efficiency of the burner is improved.

As shown in fig. 5, a transition inclined plane 26 is further provided between the diversion inclined plane 25 and the outlet of the outer fire injection pipe 21, and the transition inclined plane 26 extends from the outlet of the outer fire injection pipe 21 to the upper end of the diversion inclined plane 25. Thereby further accelerating the flow of the gas and reducing the time for the gas to fill the outer gas passage 23.

Referring to fig. 1, 3 and 5, a connecting plate 27 is disposed between the outer air channel 23 and the inner air channel 24, a plurality of oxygen supply ports 7 are formed in the connecting plate 27, the oxygen supply ports 7 are communicated with the upper side and the lower side of the stove base 2 to form an oxygen supply channel, and the oxygen supply ports 7 are uniformly distributed between the outer air channel 23 and the inner air channel 24. The corresponding ignition device on the base 1 can ignite fuel gas to generate flame, and the air circulation through the oxygen supply channel can ensure the supply of oxygen for ensuring the combustion of the flame when the flame burns. In this embodiment, four oxygen supply ports 7 are preferably arranged in a circumferential array on the circumferential side of the inner gas passage 24, so as to ensure stable oxygen supply for the flame of the inner ring of the burner.

Further, with reference to fig. 1 and 5, a plurality of upwardly protruding drainage protrusions 28 are disposed at the connection portion between the connection plate 27 and the inner side wall of the outer air channel 23, and the plurality of drainage protrusions 28 are uniformly distributed on the edge of the connection plate 27 to surround the oxygen supply channel. Thereby, the flow of air is guided by the drainage bulge 28, the air is prevented from being disturbed, and the steady flow effect is achieved.

The number of the oxygen supply ports 7 and the number of the drainage protrusions 28 are at least two, as shown in fig. 5, and the number of the drainage protrusions 28 is preferably four in this embodiment, and the drainage protrusions 28 are disposed between two adjacent oxygen supply ports 7, so that the drainage protrusions 28 can better guide the air flow between two oxygen supply ports 7, and the air flow is more stable.

As shown in fig. 5, the sides of the plurality of the flow guiding protrusions 28 near the inner air passage 24 are each curved, so that the air flow is more gently guided by the curved design.

As shown in fig. 5, the oxygen supply port 7 extends to the side wall of the inner ring of the outer air passage 23 on one side and extends to the outer peripheral surface of the outer air passage 23 on the other side. Thereby expanding the caliber of the oxygen supply port 7 as much as possible and improving the oxygen supply quantity and the oxygen supply efficiency of the oxygen supply channel.

Further, referring to fig. 2, 5 and 7, the edge of the upper end of the inner air passage 24 is provided with an upwardly protruding positioning protrusion 29, and the circumferential surface of the inner fire cover 4 is provided with a positioning groove 42 adapted to the positioning protrusion 29. Thereby realizing the accurate installation of the outer fire cover 3 by inserting the positioning bulge 29 into the positioning groove 42, and playing a foolproof role.

Referring to fig. 2, 5 and 7, the lower end of the inner fire cover 4 is provided with a fitting portion 43 extending downward; when the inner fire cover 4 is disposed in the inner gas passage 24, the fitting portion 43 extends into the inner gas passage 24 and fits the inner wall of the inner gas passage 24; the positioning groove 42 extends to the attaching portion 43, and the width and depth of the positioning groove 42 are greater than or equal to the width and depth of the positioning protrusion 29. So that the user can more simply and accurately mount the inner fire cover 4 on the inner air passage 24.

Further, as shown in fig. 3, the base 1 is provided with an oil receiving groove 13 for accumulating oil that has fallen to the base 1. So that the oil on the kitchen ware can flow to the oil receiving groove 13 after being guided by the drainage surface 34 to fall onto the base 1, so that a user can further collect and process the oil uniformly.

As shown in fig. 6, in this embodiment, the number of the external fire injection pipes 21 is preferably two, and the external fire injection pipes are uniformly distributed on two sides of the bottom surface of the stove base 2, so as to further improve the filling efficiency of the fuel gas in the external gas channel 23. Both outer fire injection pipes 21 are communicated with the first air inlet passage 11.

The basic working principle of the utility model is as follows:

the gas firstly enters the inner gas channel 24 and the outer gas channel 23 from the second gas inlet channel 12 and the first gas inlet channel 11 respectively, then the gas is sprayed out from the central inner fire outlet 41 or/and the outer ring outer fire outlet 31 and the outer ring inner fire outlet 32 in a dispersed manner, the gas is ignited by the ignition device on the base 1 and guided by the ignition groove of the outer fire cover 3, so that the burner can be flamed, and the kitchen ware can be heated by being placed on the burner.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims (10)

1. An energy-saving upper air inlet burner with uniform firepower comprises

A base (1) in which a first air intake passage (11) and a second air intake passage (12) are formed;

the fire stove seat (2) is arranged on the base (1), and the lower side of the fire stove seat is respectively provided with an outer fire injection pipe (21) communicated with the first air inlet channel (11) and an inner fire injection pipe (22) communicated with the second air inlet channel (12); an annular outer air channel (23) communicated with the outer fire injection pipe (21) and an inner air channel (24) which is arranged in the inner ring of the outer air channel (23) and is communicated with the inner fire injection pipe (22) are arranged on the upper side of the fire stove seat (2);

the outer fire cover (3) is arranged on the outer air channel (23) and is matched with the outer air channel (23) to form an outer fire cavity (5), and a plurality of outer ring outgoing fire holes (31) communicated with the outer fire cavity (5) are formed in the outer side wall of the outer fire cover (3);

an inner fire cover (4) which is arranged on the inner air channel (24) and is matched with the inner air channel (24) to form an inner fire cavity (6); the outer peripheral surface of the inner fire cover (4) is provided with a plurality of center inner fire outlet holes (41) communicated with the inner fire cavity (6); the central inner fire outlet hole (41) is inclined outwards and upwards;

the inner fire cover is characterized in that a plurality of outer ring inner fire outlet holes (32) which are communicated with the outer fire cavity (5) and are obliquely upwards arranged in the center of the inner ring are formed in the inner side wall of the outer fire cover (3), and the aperture of the central inner fire outlet hole (41) is reduced; the heat load of the central inner fire outlet hole (41) in the strong fire state is compensated by the fire outlet of the outer ring inner fire outlet hole (32).

2. An energy efficient upper air intake burner with uniform fire power as defined in claim 1, wherein: the outer air channel (23) is provided with a downward-inclined diversion inclined plane (25), the diversion inclined plane (25) is arranged on the other side of the outlet extending end of the outer fire injection pipe (21), and the higher end of the diversion inclined plane (25) is adjacent to the outlet of the outer fire injection pipe (21).

3. An energy efficient upper air intake burner with uniform fire power as defined in claim 1, wherein: the calibers of the center inner fire hole (41), the outer ring inner fire hole (32) and the outer ring outer fire hole (31) are gradually increased.

4. An energy efficient upper air intake burner with uniform fire power as defined in claim 1, wherein: flame stabilizing holes (33) communicated with the outer flame cavity (5) are formed between two adjacent outer ring inner flame outlet holes (32), the caliber of each flame stabilizing hole (33) is smaller than that of each outer ring inner flame outlet hole (32), and the setting direction of each flame stabilizing hole (33) is consistent with that of each outer ring inner flame outlet hole (32).

5. An energy efficient upper air intake burner with uniform fire power as defined in claim 2, wherein: a transition inclined plane (26) is arranged between the diversion inclined plane (25) and the outlet of the external fire injection pipe (21), and the transition inclined plane (26) extends from the outlet of the external fire injection pipe (21) to the upper end of the diversion inclined plane (25).

6. An energy efficient upper air intake burner with uniform fire power as defined in claim 1, wherein: the inner side wall of the outer fire cover (3) is provided with a drainage surface (34) which is inclined downwards from outside to inside, the drainage surface (34) is positioned at the lower side of the fire outlet hole (32) in the outer ring, and the drainage surface (34) is used for guiding oil to fall to the base (1).

7. An energy efficient upper air intake burner with uniform fire according to any of claims 1-6, wherein: a connecting plate (27) is arranged between the outer air channel (23) and the inner air channel (24), a plurality of oxygen supply ports (7) are formed in the connecting plate (27), the oxygen supply ports (7) are communicated with the upper side and the lower side of the stove seat (2) to form an oxygen supply channel, and the oxygen supply ports (7) are uniformly distributed between the outer air channel (23) and the inner air channel (24).

8. An energy efficient upper air intake burner with uniform fire according to claim 7, wherein: the connection part of the connecting plate (27) and the inner side wall of the external air channel (23) is provided with a plurality of upwards-protruding drainage bulges (28), and the plurality of drainage bulges (28) are uniformly distributed on the edge of the connecting plate (27) to encircle the oxygen supply channel.

9. An energy efficient upper air intake burner with uniform fire according to any of claims 1-6, wherein: the edge of the upper end of the inner air channel (24) is provided with a positioning protrusion (29) protruding upwards, and the peripheral surface of the inner fire cover (4) is provided with a positioning groove (42) matched with the positioning protrusion (29).

10. An energy efficient upper air intake burner with uniform fire according to any of claims 1-6, wherein: the outer side surface of the outer fire cover (3) is gradually inclined downwards from inside to outside, and the outer ring outer fire hole (31) is inclined upwards from inside to outside.