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CN-121993792-A - Burner and water heater

CN121993792ACN 121993792 ACN121993792 ACN 121993792ACN-121993792-A

Abstract

The invention discloses a combustor and a water heater, and relates to the technical field of water heaters; the injection device is provided with a jet part which is arranged corresponding to the air inlet flow channel, the jet part at least partially stretches into the air inlet flow channel from the air inlet, the jet part is provided with a fuel gas inlet and a jet hole, the fuel gas inlet is communicated with the air inlet flow channel through the jet hole, and the jet direction of the jet hole is obliquely intersected with the gas conveying direction of the air inlet flow channel. According to the invention, the residence time of the fuel gas in the air inlet flow passage is prolonged, and the filling degree of the fuel gas in the air inlet flow passage is improved, so that the mixing uniformity of the fuel gas and air in the fire grate is enhanced, the chemical equivalent ratio of the fuel gas at the fire grate is reduced, the local increase Wen Xianxiang is effectively avoided, and the smoke emission of pollutants such as CO, NOx and the like is further reduced.

Inventors

  • WANG JIN
  • HOU YANGYANG
  • LIN YU

Assignees

  • 佛山市顺德区美的洗涤电器制造有限公司

Dates

Publication Date
20260508
Application Date
20260408

Claims (13)

  1. 1. A burner for a gas turbine, which burner comprises a burner body, characterized by comprising the following steps: A fire grate with an air inlet channel with an air inlet at its air inlet end, and The injection device is provided with a jet part which is arranged corresponding to the air inlet flow channel, the jet part at least partially stretches into the air inlet flow channel from the air inlet, the jet part is provided with a fuel gas inlet and a jet hole, the fuel gas inlet is communicated with the air inlet flow channel through the jet hole, and the jet direction of the jet hole is obliquely intersected with the gas conveying direction of the air inlet flow channel.
  2. 2. The burner of claim 1 wherein said jet section has an end wall opposite said intake port, said end wall being located within said intake runner, said jet aperture including a first jet aperture provided in said end wall, said first jet aperture extending obliquely in the jet direction toward a side proximate a central axis of said intake runner; and/or the jet part is provided with a peripheral wall opposite to the peripheral surface of the air inlet flow channel, the jet hole comprises a second jet hole arranged on the peripheral wall, and the second jet hole is obliquely arranged along the jet direction towards one side far away from the central axis of the air inlet flow channel.
  3. 3. A burner as claimed in claim 2, wherein the end wall has first and second axially opposed end faces of the jet portion, the first and/or second end faces being provided as tapered faces which diverge towards a side remote from the inlet.
  4. 4. The burner of claim 2, wherein a first jet angle is formed between the jet direction of the first jet hole and the gas delivery direction of the intake runner, a second jet angle is formed between the jet direction of the second jet hole and the gas delivery direction of the intake runner, and the first jet angle and/or the second jet angle is not less than 5 degrees and not more than 15 degrees.
  5. 5. The burner of claim 4, wherein the first jet angle is greater than the second jet angle.
  6. 6. The burner of claim 2 wherein a plurality of said first jet apertures are provided, said plurality of first jet apertures being disposed at circumferentially spaced intervals along said jet section at said end wall; And/or the second jet holes are arranged in a plurality, and the second jet holes are arranged on the peripheral wall at intervals along the circumferential direction of the jet part.
  7. 7. The burner of claim 2, wherein a plurality of said second jet holes are provided, a plurality of said second jet holes being equally spaced along the circumference of said jet section; And the projections of the central axes of the second jet holes on a reference plane perpendicular to the gas conveying direction of the air inlet flow channel are positioned on the same circumference.
  8. 8. The burner of claim 2, wherein said fire row is provided with a plurality of said air intake runners, said jet section is provided with a plurality of said jet sections being provided in one-to-one correspondence with a plurality of said air intake runners, each of said jet sections being provided with a plurality of said first jet holes and/or a plurality of said second jet holes.
  9. 9. The burner of claim 8, wherein a plurality of said rows are provided, and said jet means is provided with said jet portion corresponding to each of the inlet passages of said rows.
  10. 10. The burner of claim 9, wherein the ejector further comprises a gas dividing section having a gas dividing flow passage with a gas inlet port at an inlet end thereof, and an exhaust end of the gas dividing flow passage communicating with the gas inlet port of each of the jet sections.
  11. 11. The burner of claim 10, wherein the split flow channel comprises a first flow section and a plurality of second flow sections, the first flow section is provided with the gas introduction port, the first flow section is respectively communicated with the plurality of second flow sections, the plurality of second flow sections are oppositely arranged along a first direction, and each second flow section is provided with a plurality of split ports; the surface of each second flow section is provided with a plurality of jet flow parts at intervals along the second direction, and the gas inlets of the jet flow parts are communicated with the split-flow ports one by one; the fire rows are arranged at intervals along a second direction, and the second direction is intersected with the first direction.
  12. 12. A burner as claimed in any one of claims 1 to 11, wherein an air flow passage is defined between the peripheral wall of the jet portion and the edge of the air inlet, the air flow passage being for injecting air into the air inlet flow passage.
  13. 13. A water heater comprising a burner as claimed in any one of claims 1 to 12.

Description

Burner and water heater Technical Field The invention relates to the technical field of water heaters, in particular to a combustor and a water heater. Background In a fire row of a traditional gas water heater, gas and air flow in the same direction, so that the gas and the air are insufficiently mixed in the fire row, uneven distribution of the combustion equivalence ratio at a fire outlet is caused, the flame uniformity is poor, and the emission performance is general. Disclosure of Invention The invention mainly aims to provide a combustor and a water heater, which aim to enhance the mixing uniformity of fuel gas and air in a fire grate, reduce the chemical equivalent ratio of the fuel gas at the fire grate, effectively avoid partial increase Wen Xianxiang and further reduce the smoke emission of pollutants such as CO, NOx and the like. To achieve the above object, the present invention provides a burner comprising: A fire grate with an air inlet channel with an air inlet at its air inlet end, and The injection device is provided with a jet part which is arranged corresponding to the air inlet flow channel, the jet part at least partially stretches into the air inlet flow channel from the air inlet, the jet part is provided with a fuel gas inlet and a jet hole, the fuel gas inlet is communicated with the air inlet flow channel through the jet hole, and the jet direction of the jet hole is obliquely intersected with the gas conveying direction of the air inlet flow channel. In one embodiment, the jet part is provided with an end wall opposite to the air inlet, the end wall is positioned in the air inlet flow channel, the jet hole comprises a first jet hole arranged on the end wall, and the first jet hole is obliquely arranged towards one side close to the central axis of the air inlet flow channel along the jet direction; and/or the jet part is provided with a peripheral wall opposite to the peripheral surface of the air inlet flow channel, the jet hole comprises a second jet hole arranged on the peripheral wall, and the second jet hole is obliquely arranged along the jet direction towards one side far away from the central axis of the air inlet flow channel. In one embodiment, the end wall has a first end face and a second end face opposite in the axial direction of the jet section, the first end face and/or the second end face being provided as a tapered face that expands toward a side away from the air intake. In an embodiment, a first jet angle is formed between the jet direction of the first jet hole and the gas conveying direction of the air inlet flow channel, a second jet angle is formed between the jet direction of the second jet hole and the gas conveying direction of the air inlet flow channel, and the first jet angle and/or the second jet angle is not less than 5 degrees and not more than 15 degrees. In one embodiment, the first jet angle is greater than the second jet angle. In one embodiment, the first jet holes are multiple, and the first jet holes are arranged on the end wall at intervals along the circumferential direction of the jet part; And/or the second jet holes are arranged in a plurality, and the second jet holes are arranged on the peripheral wall at intervals along the circumferential direction of the jet part. In an embodiment, a plurality of second jet holes are formed, and the second jet holes are equidistantly arranged along the circumferential direction of the jet part; And the projections of the central axes of the second jet holes on a reference plane perpendicular to the gas conveying direction of the air inlet flow channel are positioned on the same circumference. In an embodiment, the fire row is provided with a plurality of air inlet channels, the jet flow part and the air inlet channels are arranged in a one-to-one correspondence mode, and each jet flow part is provided with a plurality of first jet holes and/or a plurality of second jet holes. In an embodiment, the fire row is provided with a plurality of fire rows, and the jet part is arranged corresponding to the air inlet runner of each fire row. In one embodiment, the injection device further comprises a gas separation part, the gas separation part is provided with a gas separation runner, a gas inlet is arranged at the gas inlet end of the gas separation runner, and the gas outlet end of the gas separation runner is communicated with the gas inlet of each jet part. In an embodiment, the gas-dividing flow channel includes a first flow section and a plurality of second flow sections, the first flow section is provided with the gas introduction port, the first flow section is respectively communicated with the plurality of second flow sections, the plurality of second flow sections are oppositely arranged along a first direction, and each second flow section is provided with a plurality of dividing ports; the surface of each second flow section is provided with a plurality of jet flow parts at intervals along the