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CN-122015093-A - Fire row, burner and gas water heating equipment

CN122015093ACN 122015093 ACN122015093 ACN 122015093ACN-122015093-A

Abstract

The invention belongs to the technical field of gas equipment, and particularly discloses a fire grate, a burner and gas water heating equipment. The fire row is including having the injection portion that draws the passageway, draws the passageway and including shrink passageway section and main passageway section, is provided with vortex convex closure group on the internal face of main passageway section, and vortex convex closure group includes two vortex convex closure, along the air current flow direction, two vortex convex closure dislocation set, and two vortex convex closure exist at least part dislocation along the projection of air current flow direction. The invention can prolong the residence time of the fuel gas and the air in the injection channel, thereby improving the combustion sufficiency and the combustion stability.

Inventors

  • GU YUQIANG
  • CHEN YUANYUAN
  • ZHANG SHANGBING
  • LU XINHUI

Assignees

  • 广东万和新电气股份有限公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (13)

  1. 1. Fire row, including having injection portion (10) that draws passageway (101), draw passageway (101) including shrink passageway section (1) and main passageway section (2) that link to each other along the air current flow direction, a serial communication port, be provided with vortex convex closure group on the internal face of main passageway section (2), vortex convex closure group includes two vortex convex closure (21), two vortex convex closure (21) are along air current flow direction dislocation set, and two vortex convex closure (21) are followed the projection of air current flow direction exists at least part dislocation.
  2. 2. The fire grate according to claim 1, characterized in that, of the two turbulence convex hulls (21), the turbulence convex hull (21) located on the upstream side is a first turbulence convex hull (21 a), the turbulence convex hull (21) located on the downstream side is a second turbulence convex hull (21 b), and the first turbulence convex hull (21 a) and the second turbulence convex hull (21 b) each extend in the circumferential direction of the main channel section (2).
  3. 3. The fire grate of claim 2, wherein the distance between the upstream end of the second turbulent convex hull (21 b) and the upstream end of the first turbulent convex hull (21 a) is L1, and the length of the first turbulent convex hull (21 a) along the airflow direction is L2, and L1 is 0.5-L1 and L2-2.
  4. 4. Fire grate according to claim 2, characterized in that the smallest cross-sectional flow area of the main channel section (2) at the location of the first turbulence convex hull (21 a) is S1, and the smallest cross-sectional flow area of the main channel section (2) at the location of the second turbulence convex hull (21 b) is S2, s1:s2=0.9-1.1.
  5. 5. A fire grate according to claim 2, characterized in that the main channel section (2) has a maximum cross-sectional flow area S3 at the first turbulence convex hull (21 a), and the main channel section (2) has a minimum cross-sectional flow area S1, s1:s3=0.4-0.8 at the location of the first turbulence convex hull (21 a); And/or the number of the groups of groups, The maximum flow cross section of the main channel section (2) at the position where the second turbulent convex hull (21 b) is arranged is S4, and the minimum flow cross section of the main channel section (2) at the position where the second turbulent convex hull (21 b) is arranged is S2, wherein S4=0.4-0.8.
  6. 6. The fire grate of claim 2, wherein the fire grate comprises a first fire grate sheet (110) and a second fire grate sheet (120) which are oppositely arranged along the thickness direction of the fire grate, the first fire grate sheet (110) and the second fire grate sheet (120) are surrounded to form the injection channel (101), the first turbulent convex hull (21 a) is arranged on the first fire grate sheet (110), the second turbulent convex hull (21 b) is arranged on the second fire grate sheet (120), two ends of the first turbulent convex hull (21 a) in the length direction are abutted to the second fire grate sheet (120), and two ends of the second turbulent convex hull (21 b) in the length direction are abutted to the first fire grate sheet (110).
  7. 7. The fire grate of claim 2, wherein the turbulent convex hulls (21) in the turbulent convex hull group further comprise a third turbulent convex hull (21 c) and a fourth turbulent convex hull (21 d), the third turbulent convex hull (21 c) and the fourth turbulent convex hull (21 d) are both arranged at the downstream of the second turbulent convex hull (21 b), the third turbulent convex hull (21 c) and the fourth turbulent convex hull (21 d) are at the same height of the fire grate, the third turbulent convex hull (21 c) and the fourth turbulent convex hull (21 d) both extend along the circumferential direction of the main channel section (2), and both ends of the third turbulent convex hull (21 c) in the length direction are offset with both ends of the fourth turbulent convex hull (21 d) in the length direction.
  8. 8. Fire grate as claimed in claim 2, characterized in that the main channel section (2) is provided with a plurality of turbulence convex hull groups, which are arranged at intervals in the direction of flow of the air flow.
  9. 9. A fire grate according to any one of claims 1-5, characterized in that the spoiler bulge (21) comprises a constriction (211) and an expansion (212) arranged in succession in the direction of flow of the air flow, the constriction (211) being adjacent to the axis of the main channel segment (2) in the direction of flow of the air flow, the expansion (212) being distant from the axis of the main channel segment (2) in the direction of flow of the air flow.
  10. 10. The fire grate of claim 9, wherein the spoiler (21) further comprises a connecting portion (213), the connecting portion (213) connecting the constriction (211) and the expansion (212).
  11. 11. Fire grate according to claim 9, characterized in that the constriction (211) forms an angle α,30 ° - α -80 °; And/or the number of the groups of groups, The included angle between the expansion part (212) and the axis of the main channel section (2) is beta, and beta is more than or equal to 30 degrees and less than or equal to 80 degrees.
  12. 12. A burner comprising a fire grate as claimed in any one of claims 1 to 11.
  13. 13. A gas water heating apparatus comprising a burner as claimed in claim 12.

Description

Fire row, burner and gas water heating equipment Technical Field The invention relates to the technical field of gas equipment, in particular to a fire grate, a burner and gas hot water equipment. Background The burner is a core component of gas water heating equipment such as a gas water heater, a gas wall-mounted furnace and the like, and the combustion stability and the sufficiency of the burner are directly related to the service performance of the gas water heating equipment. The existing burner applied to the gas water heating equipment generally comprises a plurality of fire bars which are arranged side by side, wherein an injection channel and a gas channel are arranged in the fire bars in a communicated mode, flame holes are formed in the upper ends of the fire bars in the gas channel, and gas flowing out through the gas channel and the flame holes is ignited to burn to form flame. Along with the increasing of the thinning demand of gas water heating equipment, the width of fire row is also more and more narrow, leads to the cross-sectional area of flow of gas passageway to reduce, and then leads to the mixed gas that gas and air mixing formed to flow out the speed of gas passageway and increase, and the stay time of gas in the fire row is inside shortens, leads to the inhomogeneous problem of gas and air mixing to appear easily, and then leads to the unstable condition emergence of burning, influences the use experience of combustor and gas water heating equipment. Therefore, there is a need for a fire grate, a burner and a gas water heating device to solve the above technical problems. Disclosure of Invention The first technical problem to be solved by the invention is to provide a fire grate which can effectively improve the mixing uniformity of fuel gas and air. The second technical problem to be solved by the invention is to provide a burner which can effectively improve the mixing uniformity of fuel gas and air. The third technical problem to be solved by the invention is to provide the gas equipment, which can effectively improve the service performance of the gas water heating equipment. The first technical problem is solved by the following technical scheme: The fire row comprises an injection part with an injection channel, the injection channel comprises a shrinkage channel section and a main channel section which are connected along the airflow flowing direction, a turbulent convex hull group is arranged on the inner wall surface of the main channel section, the turbulent convex hull group comprises two turbulent convex hulls, the two turbulent convex hulls are arranged in a staggered manner along the airflow flowing direction, and the two turbulent convex hulls are at least partially staggered along the projection of the airflow flowing direction. Compared with the background technology, the fire grate has the advantages that when the nozzle supplies fuel gas into the fire grate, the fuel gas is concentrated in the central area of the shrinkage channel section and can be injected into the surrounding air when being injected into the shrinkage channel section through the nozzle, the surrounding air is distributed around the fuel gas, so that the air entering the injection channel can flow towards the axis direction of the injection channel under the drainage and collision actions of the wall surface of the shrinkage channel section and is mixed with the fuel gas concentrated in the central area of the shrinkage channel section, the mixing effect of the air and the fuel gas is improved, and as the fuel gas and the air continue to flow into the main channel section, the air flow flowing near the wall surface can collide on the turbulent convex bags positioned at the upstream side, the air flow direction is changed to different directions and is better mixed with the air flow positioned in the central area, and the mixing effect of the air and the fuel gas is further improved. Moreover, because two vortex convex hulls are arranged in a staggered manner along the airflow flowing direction, and at least part of the projection of the two vortex convex hulls along the airflow flowing direction is staggered, after more airflow collides with the vortex convex hulls at the upstream side, the more airflow can deviate towards the downstream vortex convex hulls and collide with the downstream vortex convex hulls, so that the disturbance to the airflow is further enhanced, the mixing uniformity of air and fuel gas is improved, the harmful substances generated during combustion are reduced, the combustion stability and reliability of a fire row are improved, and the thinning design of the fire row is facilitated. In one embodiment, in the airflow flowing direction, of the two turbulent convex hulls, the turbulent convex hull located on the upstream side is a first turbulent convex hull, the turbulent convex hull located on the downstream side is a second turbulent convex hull, and the turbulent convex