Burner fire cover and burner thereof

Abstract

The burner fire cover comprises a fire cover base, a mixing cavity is formed in the fire cover base, an outer ring air inlet is formed in the fire cover base, and the outer ring air inlet is communicated with the mixing cavity; a sinking cavity is formed in the fire cover base and is in transition connection with the mixing cavity through an inclined guide face. The sinking cavity is arranged in the mixing cavity, the pressure loss is reduced through buffering of the sinking cavity, the gas flowing path is optimized, and the stability and efficiency of gas are improved, so that pressure distribution in the mixing cavity is more uniform and balanced, the air injection efficiency is improved, the mixing effect of air and fuel gas is enhanced, the combustion efficiency is effectively improved, and combustion is more sufficient; therefore, the effects of energy conservation and emission reduction are achieved, the performance of the burner is finally improved, the load capacity of the burner is enhanced, and the energy efficiency of the burner is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of burner fire cover, specifically relates to a burner fire cover and burner thereof. BACKGROUND

[0002] The burner is the device that mixes and burns fuel and air in a certain way. The burner mainly includes an outer ring fire cover, a center fire cover, a burner head and a fire cover base. The fire cover base of the burner in the prior art has structural design defects, which causes poor outflow of mixed gas, large pressure loss of the mixed gas in the flow channel, low air injection capacity, low load of the burner, low energy efficiency and high CO content. SUMMARY

[0003] The utility model discloses a burner fire cover and burner thereof, which are reasonable in design, high in practicability, have a sunken cavity arranged in the mixing cavity, reduce pressure loss through the buffer of the sunken cavity, optimize the gas flow path, improve the stability and efficiency of the gas, make the pressure distribution in the mixing cavity more uniform and balanced, improve the air injection efficiency, enhance the mixing effect of air and gas, effectively improve the combustion efficiency, make the combustion more sufficient, reduce the CO content in flue gas, achieve the effect of energy saving and emission reduction, finally improve the performance of the burner, enhance the load capacity of the burner and improve the energy efficiency.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A burner fire cover, comprising a fire cover base, a mixing cavity is arranged in the fire cover base, an outer ring gas inlet is arranged on the fire cover base, the outer ring gas inlet is communicated with the mixing cavity, a sunken cavity is arranged in the fire cover base, the outer ring gas inlet is located in the sunken cavity, the sunken cavity is connected with the mixing cavity through an inclined guide surface, the burner fire cover is reasonable in design and high in practicability, the sunken cavity arranged in the mixing cavity reduces pressure loss through the buffer of the sunken cavity, optimizes the gas flow path, improves the stability and efficiency of the gas, makes the pressure distribution in the mixing cavity more uniform and balanced, improves the air injection efficiency, enhances the mixing effect of air and gas, effectively improves the combustion efficiency, makes the combustion more sufficient, reduces the CO content in flue gas, achieves the effect of energy saving and emission reduction, finally improves the performance of the burner, enhances the load capacity of the burner and improves the energy efficiency, the inclined guide surface communicates the mixing cavity with the sunken cavity, the gas can flow more smoothly from the sunken cavity to the mixing cavity through the guidance of the inclined guide surface, reduces the resistance and further improves the mixing efficiency of the gas.

[0006] Further, the inner ring wall of the sinking cavity is provided with an arc-shaped groove, the arc-shaped groove comprises a first arc surface, a second arc surface and a third arc surface, the second arc surface connects the first arc surface and the third arc surface, the first arc surface and the third arc surface are protrudingly arranged towards the direction of the mixing cavity, and the second arc surface is recessedly arranged towards the direction of the mixing cavity. The design of the arc-shaped groove can facilitate the placement and positioning of other components in the fire cover base. The arc-shaped groove is composed of three arc surfaces. The arc surface design can better guide the gas flow in the sinking cavity and reduce the resistance of the gas flow in the sinking cavity.

[0007] Further, the sinking cavity is in a fan-shaped structure, and the central angle a of the sinking cavity is 60°-180°. The design is ingenious and reasonable. The fan-shaped sinking cavity can better guide the gas flow and improve the uniformity of gas distribution, so that the gas and air can be fully mixed to improve the combustion efficiency. The fan-shaped design also makes the overall appearance more beautiful. The angle of the sinking cavity is limited, and the angle is reasonably selected to ensure that the sinking cavity has a certain space size, so that sufficient guidance and diffusion of the gas can be ensured to improve the mixing efficiency.

[0008] Further, the sinking cavity is formed by outwardly recessing from the bottom surface of the mixing cavity. The sinking depth of the sinking cavity is 3-10 mm. The sinking depth size is moderately designed to ensure the overall structural strength, so that the sinking cavity can provide sufficient space and time for the gas flow to diffuse and mix, thereby improving the stability and mixing efficiency of the gas flow.

[0009] Further, the acute angle β formed by the inclined surface and the horizontal plane is 30°-60°. The inclined surface can reduce stress concentration and enhance the overall structural strength. The design of the acute angle β in the range of 30°-60° enables the inclined surface to effectively guide the gas flow, reduce the resistance of the gas on the inclined surface, and promote the mixing and diffusion of the gas near the inclined surface.

[0010] Further, the connection between the inclined surface and the bottom surface of the mixing cavity and the connection between the inclined surface and the sinking cavity are both transitionally connected through a circular arc segment. The transitionally connected circular arc segment can effectively guide the gas flow, reduce the resistance of the gas at the connection, enhance the gas mixing effect, and reduce stress concentration at the connection through smooth transition design, thereby improving the structural strength of the connection and making the overall structure more stable and firm.

[0011] Further, the radius of the circular arc segment is 5-25 mm. The circular arc segment with a radius of 5-25 mm can provide sufficient curvature to make the stress distribution more uniform and effectively reduce the stress concentration phenomenon at the connection.

[0012] Further, a convex portion is arranged in the mixing cavity. The convex portion is arranged along the path of the mixing cavity. The cross section of the bottom end of the convex portion gradually decreases towards the top end. The convex portion can change the flow path of the gas flow in the mixing cavity and enhance the mixing effect.

[0013] Further, the arc-shaped chamfer is arranged at the edge of the sinking cavity, which can reduce the sharp part at the edge, improve the overall safety of the product, and smoothly transition the edge to reduce the resistance in the gas flow process in the sinking cavity.

[0014] A burner comprising a burner cap as claimed in any of the preceding claims.

[0015] The utility model discloses have following beneficial effect because of adopting above -mentioned technical scheme:

[0016] The utility model discloses reasonable in design, and practicality is strong, and the sinking cavity is arranged in the mixing cavity, and the pressure loss is reduced through the buffer of sinking cavity, and the gas flow path is optimized, and the stability and efficiency of gas are improved, make the pressure distribution in the mixing cavity more uniform and balanced, improve air entrainment efficiency, strengthen the mixing effect of air and gas, effectively improve combustion efficiency, make the combustion more fully, reduce the CO content in flue gas, thereby reach the effect of energy saving and emission reduction, finally improve the performance of the burner, make the load capacity of the burner strengthen, and energy efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in connection with the drawings:

[0018] Figure 1 It is the structure schematic diagram of a burner cap of the utility model;

[0019] Figure 2 It is the bottom surface structure schematic diagram of the fire cover base in the utility model;

[0020] Figure 3 It is Figure 2 It is the structure schematic diagram of another angle;

[0021] Figure 4 It is the top surface structure schematic diagram of the fire cover base in the utility model;

[0022] Figure 5 It is the cross section structure schematic diagram of the fire cover base in the utility model.

[0023] In the drawing, 1-fire cover base;2-mixing cavity;3-outer ring gas inlet;4-sinking cavity;5-inclined guide surface;6-circular arc segment;7-arc-shaped chamfer;8-fire cover;9-arc-shaped groove;10-first arc surface;11-second arc surface;12-third arc surface;13-convex part. DETAILED DESCRIPTION

[0024] As Figures 1 to 5The utility model relates to a burner fire cover, including a fire cover base 1, be equipped with mixing chamber 2 in fire cover base 1, be equipped with outer ring air inlet 3 on fire cover base 1, and outer ring air inlet 3 communicates with mixing chamber 2, be equipped with sunken chamber 4 in fire cover base 1, and outer ring air inlet 3 is located in sunken chamber 4, and sunken chamber 4 is connected with mixing chamber 2 through inclined guide surface 5 transition, reasonable in design, strong practicality, set up a sunken chamber 4 in mixing chamber 2, reduce pressure loss through the buffer of sunken chamber 4, optimize gas flow path, improve the stability and efficiency of gas, make the pressure distribution in mixing chamber 2 more uniform balance, improve air entrainment efficiency, enhance the mixing effect of air and gas, effectively improve the combustion efficiency, make the combustion more fully, reduce the CO content in flue gas, to reach the effect of energy saving and emission reduction, finally improve the performance of the burner, make the load capacity of the burner enhance, energy efficiency is high, inclined guide surface 5 communicates mixing chamber 2 with sunken chamber 4, through the guidance of inclined guide surface 5 make gas flow from sunken chamber 4 to mixing chamber 2 can be more smooth and fluent, reduce resistance, further improve the mixing efficiency of gas.

[0025] The inner ring wall of the sunken chamber 4 is provided with an arc-shaped groove 9, the arc-shaped groove 9 comprises a first arc surface 10, a second arc surface 11 and a third arc surface 12, the second arc surface 11 connects the first arc surface 10 and the third arc surface 12, the first arc surface 10 and the third arc surface 12 are protrudingly arranged towards the direction of the mixing chamber 2, and the second arc surface 11 is recessedly arranged towards the direction of the mixing chamber 2; the arc-shaped groove 9 is designed to facilitate the positioning of other components in the fire cover base 1, and the arc-shaped groove 9 is composed of three arc surfaces; the arc surface design can better guide the gas flow in the sunken chamber 4 and reduce the resistance of the gas flow in the sunken chamber 4.

[0026] The sunken chamber 4 has a fan-shaped structure, and the central angle α of the sunken chamber 4 is 60°-180°; the fan-shaped structure of the sunken chamber 4 can better guide the gas flow and improve the uniformity of gas distribution, so that the gas and air can be fully mixed to improve the combustion efficiency; the fan-shaped structure design also makes the overall appearance more beautiful, and the angle of the sunken chamber 4 is limited; the reasonable angle ensures that the sunken chamber 4 has a certain space size, so that the gas can be fully guided and diffused to improve the mixing efficiency.

[0027] The sunken chamber 4 is part of the mixing chamber 2, and the sunken chamber 4 is formed by outwardly recessing the bottom surface of the part of the mixing chamber 2; the sunken depth of the sunken chamber 4 is 3-10 mm; the moderate sunken depth size ensures the overall structural strength, so that the sunken chamber 4 can provide sufficient space and time for the gas flow to diffuse and mix, thereby improving the stability and mixing efficiency of the gas flow.

[0028] The acute angle β formed by the inclined surface 5 and the horizontal plane is 30-60 degrees, the inclined surface 5 can reduce stress concentration phenomenon, enhance the overall structural strength, the acute angle β is designed in the range of 30-60 degrees, so that the inclined surface 5 can effectively guide the gas flow, reduce the resistance of the gas on the inclined surface 5, promote the mixing and diffusion of the gas near the inclined surface 5. The connecting place of the inclined surface 5 and the bottom surface of the mixing chamber 2, the connecting place of the inclined surface 5 and the sunken chamber 4 are all connected by the arc segment 6, the arc segment 6 can effectively guide the gas flow, reduce the resistance of the gas at the connecting place, enhance the gas mixing effect, and the smooth transition design of the arc segment 6 can reduce the stress concentration at the connecting place, improve the structural strength of the connecting place, so that the overall structure is more stable and firm. The radius of the arc segment 6 is 5-25mm, the arc segment 6 with a radius of 5-25mm can provide sufficient curvature, so that the stress distribution is more uniform, effectively reducing the stress concentration phenomenon at the connecting place.

[0029] The mixing chamber 2 is provided with a convex part 13, the convex part 13 is arranged along the path of the mixing chamber 2, the cross section of the bottom end of the convex part 13 gradually decreases towards the top end, the convex part 13 can change the flow path of the gas flow in the mixing chamber 2, and enhance the mixing effect. The edge of the sunken chamber 4 is provided with an arc chamfer 7, the arc chamfer 7 can reduce the sharp part at the edge, improve the overall safety of the product, and the arc chamfer 7 can smoothly transition the edge and reduce the resistance of the gas flow in the sunken chamber 4.

[0030] A burner comprising the burner cap of the present application.

[0031] The present application has the advantages of reasonable design and high practicability, the sunken chamber 4 is arranged in the mixing chamber 2, the pressure loss is reduced through the buffering of the sunken chamber 4, the gas flow path is optimized, the stability and efficiency of the gas are improved, the pressure distribution in the mixing chamber 2 is more uniform and balanced, the air entraining efficiency is improved, the mixing effect of the air and the gas is enhanced, the combustion efficiency is effectively improved, the combustion is more sufficient, the CO content in the flue gas is reduced, thereby achieving the effect of energy saving and emission reduction, finally improving the performance of the burner, enhancing the load capacity of the burner, and being high in energy efficiency.

[0032] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited thereto. Any simple change, equivalent replacement or modification made on the basis of the present application to solve basically the same technical problem and achieve basically the same technical effect is also covered in the protection scope of the present application.

Claims

1. A burner cap, comprising a cap base, wherein a mixing cavity is arranged in the cap base, and an outer ring air inlet is arranged on the cap base and communicates with the mixing cavity; characterized in that a sunken cavity is arranged in the cap base, the outer ring air inlet is located in the sunken cavity, and the sunken cavity is connected to the mixing cavity through an inclined guide surface.

2. A burner cap as defined in claim 1, wherein: an arc-shaped groove is arranged on an inner ring wall of the sunken cavity, the arc-shaped groove comprises a first arc surface, a second arc surface and a third arc surface, the second arc surface connects the first arc surface and the third arc surface, the first arc surface and the third arc surface are convexly arranged towards the direction of the mixing cavity, and the second arc surface is concavely arranged towards the direction of the mixing cavity.

3. A burner cap as defined in claim 1, wherein: the sunken cavity is a fan-shaped structure, and a central angle a of the sunken cavity is 60°-180°.

4. A burner pilot assembly according to claim 1 wherein: the sunken cavity is formed by concavely arranging the bottom surface of the mixing cavity outwards, and a sunken depth of the sunken cavity is 3-10 mm.

5. A burner pilot assembly according to claim 1 wherein: an acute angle β formed by the inclined guide surface and a horizontal plane is 30°-60°.

6. A burner pilot assembly according to claim 1 wherein: the connection between the inclined guide surface and the bottom surface of the mixing cavity and the connection between the inclined guide surface and the sunken cavity are both connected through a circular arc segment.

7. A burner pilot assembly according to claim 6, wherein: a radius of the circular arc segment is 5-25 mm.

8. A burner pilot assembly according to claim 1 wherein: a convex part is arranged in the mixing cavity, the convex part is arranged along the path of the mixing cavity, and the cross section of the bottom end of the convex part gradually decreases towards the top end.

9. A burner pilot assembly according to claim 1 wherein: an arc-shaped chamfer is arranged at the edge of the sunken cavity.

10. A burner characterized by: the burner cap according to any one of claims 1-9 is included.

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