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CN-121977211-A - Fire row, burner and water heater

CN121977211ACN 121977211 ACN121977211 ACN 121977211ACN-121977211-A

Abstract

The invention discloses a fire grate, a burner and a water heater, and relates to the technical field of water heaters. The fire grate body is provided with an air inlet flow passage and a mixing cavity, the mixing cavity is provided with an air outlet, the mixing cavity is communicated with the air outlet end of the air inlet flow passage, the air inlet end of the air inlet flow passage is provided with an air inlet, the turbulence piece is arranged in the air inlet flow passage and comprises a turbulence body and a flow guiding part, the turbulence body is provided with a through-arranged turbulence groove, the flow guiding part is arranged corresponding to the turbulence groove, the turbulence groove is used for dispersing and disturbing air flow flowing through the turbulence body, and the flow guiding part is used for guiding the air flow to flow from the turbulence groove to the mixing cavity. The technical scheme provided by the invention can enhance the mixing uniformity of the fuel gas and the air in the fire grate, reduce the chemical equivalent ratio of the fuel gas at the fire grate, avoid the local increase Wen Xianxiang, and further reduce the smoke emission of pollutants such as CO, NOx and the like.

Inventors

  • WANG JIN
  • SHEN TING
  • LIN YU

Assignees

  • 佛山市顺德区美的洗涤电器制造有限公司

Dates

Publication Date
20260505
Application Date
20260408

Claims (20)

  1. 1. A fire grate, comprising: The fire grate body is provided with an air inlet flow passage and a mixing cavity, the mixing cavity is provided with an air outlet, the mixing cavity is communicated with the air outlet end of the air inlet flow passage, the air inlet end of the air inlet flow passage is provided with an air inlet, and The vortex piece is arranged in the air inlet flow channel, the vortex piece comprises a vortex body and a flow guiding part, the vortex body is provided with a flow guiding groove which is communicated with the flow guiding part, the flow guiding part is arranged corresponding to the flow guiding groove, the flow guiding groove is used for dispersing and disturbing air flow flowing through the vortex body, and the flow guiding part is used for guiding air flow to flow from the flow guiding groove towards the mixing cavity.
  2. 2. The fire grate of claim 1, wherein the spoiler body comprises a first spoiler portion and a second spoiler portion, a first included angle formed between the first spoiler portion and the second spoiler portion and expanding toward a side away from the air inlet, and the spoiler grooves comprise a first spoiler groove formed in the first spoiler portion and/or a second spoiler groove formed in the second spoiler portion.
  3. 3. The fire grate of claim 2, wherein the air inlet is formed in one side of the fire grate body along the length direction, the air inlet and the turbulence member are arranged opposite to each other along the length direction of the fire grate body, the air outlet is formed in one side of the fire grate body along the height direction, the first turbulence portion is obliquely arranged toward one side close to the air outlet along the air inlet direction of the air inlet channel, and the second turbulence portion is obliquely arranged toward one side away from the air outlet along the air inlet direction of the air inlet channel.
  4. 4. A fire grate as claimed in claim 2 wherein said first included angle is not less than 30 degrees and not more than 45 degrees.
  5. 5. The fire grate of claim 2, wherein the turbulent flow body has a contracted end and an expanded end which are disposed opposite to each other along a length direction of the fire grate body, a side of the first turbulent flow groove adjacent to the contracted end has a first edge, the flow guiding portion includes a first flow guiding portion including a first flow guiding section and a second flow guiding section which are connected by bending, the first flow guiding section is disposed obliquely from the first edge toward a side far from the air outlet, and the second flow guiding section is disposed opposite to the first turbulent flow groove.
  6. 6. The fire grate of claim 2, wherein the turbulent flow body has a contracted end and an expanded end which are disposed opposite to each other along a length direction of the fire grate body, the second turbulent flow groove has a second edge on a side close to the contracted end, the flow guiding portion includes a second flow guiding portion, the second flow guiding portion includes a third flow guiding section and a fourth flow guiding section which are connected by bending, the third flow guiding section is disposed obliquely from the second edge toward a side close to the air outlet, and the fourth flow guiding section is disposed opposite to the second turbulent flow groove.
  7. 7. The fire grate of claim 2, wherein a plurality of turbulence protrusions are arranged at one end of the first turbulence part and/or the second turbulence part away from the air inlet, and the plurality of turbulence protrusions are arranged at intervals along the width direction of the fire grate body.
  8. 8. The fire grate of claim 1 wherein said spoiler body is disposed around said deflector portion, said spoiler grooves being located between a peripheral wall of said spoiler body and said deflector portion; in the air inlet direction of the air inlet flow channel, the peripheral wall of the turbulence body is contracted towards the side far away from the air inlet, and/or the peripheral wall of the flow guiding part is expanded towards the side far away from the air inlet.
  9. 9. The fire grate of claim 8 wherein, in an axial cross-section of said spoiler body, a second included angle is formed between two side edges of said spoiler body, said second included angle being no less than 25 degrees and no more than 35 degrees; And/or, in the axial section of the flow guiding part, a third included angle is formed between two side edges of the flow guiding part, and the third included angle is not less than 25 degrees and not more than 35 degrees; And/or the turbulent flow grooves are arranged in a plurality, and the turbulent flow grooves are arranged along the circumferential direction of the flow guiding part.
  10. 10. A fire grate as claimed in any one of claims 1 to 9 wherein the inlet duct has an ejector section extending from the inlet towards the mixing chamber, the ejector section having a tapering section and a diverging section arranged and communicating in the inlet direction of the inlet duct, the spoiler being provided in the diverging section.
  11. 11. The fire grate of any one of claims 1 to 9, further comprising a combustion head provided to the grate body, the combustion head comprising a distributor plate and a flow equalizer plate, the distributor plate covering the air outlet, the flow equalizer plate being provided to a side of the distributor plate facing the mixing chamber, the distributor plate being provided with a plurality of fire holes, the flow equalizer plate being provided with a plurality of flow equalizer holes.
  12. 12. The fire grate of claim 11 wherein said plurality of equalization holes comprises a first equalization hole and a second equalization hole, said equalization plate having two first equalization regions opposite in length and a second equalization region between said two first equalization regions, said first equalization region having a plurality of said first equalization holes and said second equalization region having a plurality of said second equalization holes, said second equalization holes having an open area greater than the open area of said first equalization holes.
  13. 13. The fire grate of claim 12 wherein a plurality of said first flow equalizer holes comprise a plurality of first flow equalizer holes and a plurality of second flow equalizer holes, said plurality of first flow equalizer holes and said plurality of second flow equalizer holes being alternately arranged along the length of said flow equalizer plate, said plurality of second flow equalizer holes being arranged in a plurality of rows along the width of said flow equalizer plate, each row having a plurality of said second flow equalizer holes, said first flow equalizer holes having an open area greater than the open area of said second flow equalizer holes; and/or, the second flow equalizing holes are arranged along the length direction of the flow equalizing plate.
  14. 14. The fire grate of claim 11 wherein said combustion head further comprises two side plates disposed on opposite sides of said flow equalization plate in a width direction, each of said side plates having a plurality of flow equalization holes, a side air outlet passage being formed between a side of each of said side plates facing away from the other side plate and said fire grate body, a plurality of said side air outlet passages being in one-to-one communication with a plurality of said flow equalization holes, a side of said side air outlet passages facing away from said mixing chamber being open to form a flame holding port.
  15. 15. The fire grate of claim 14 wherein the cross-sectional area of the side air outlet channels diverges from a side remote from the flame stabilizing port toward the flame stabilizing port.
  16. 16. The fire grate of claim 14 wherein a portion of said grate body opposite each of said side panels is provided with a plurality of lateral projections spaced apart along the length thereof, each of said lateral projections defining said lateral air outlet passage with an adjacent side panel, each of said lateral projections including a main panel body disposed opposite said side panel and bent panel bodies disposed on opposite sides of said main panel, each of said bent panel bodies being bent with respect to said main panel body toward a side adjacent said side panel.
  17. 17. The fire grate of claim 16 wherein said bent plate body is disposed at an obtuse angle to said main plate body; And/or a fourth included angle is formed between the bending plate body and the adjacent side plate, wherein the fourth included angle is not smaller than 10 degrees and not larger than 15 degrees; and/or, in the direction towards the flame stabilizing port, the main plate body is arranged in an outward inclined manner relative to the adjacent side plate.
  18. 18. The fire grate of claim 14 wherein each of said side panels has a first panel face, the first panel face of each of said side panels being disposed away from the other of said side panels, the sum of the total areas of the plurality of tap holes defining two of said side panels being defined as S1, the sum of the total areas defining two of said first panel faces being defined as S2, the ratio of said S1 to said S2 being no less than 0.2 and no greater than 0.3.
  19. 19. The fire grate of claim 11 wherein said flow equalization plates have a second deck facing said fire divider plate, a sum of total areas defining a plurality of said flow equalization holes being S3, an area defining said second deck being S4, and a ratio of said S3 to said S4 being no less than 0.25 and no greater than 0.35.
  20. 20. A burner comprising a fire grate as claimed in any one of claims 1 to 19.

Description

Fire row, burner and water heater Technical Field The invention relates to the technical field of water heaters, in particular to a fire grate, a burner and a water heater. Background In a fire row of a traditional gas water heater, the flowing direction of gas and air is consistent, and the natural mixing in the flowing process is only relied on, so that the gas and air in the fire row are insufficiently mixed, the burning equivalence ratio at the fire outlet is unevenly distributed, the flame uniformity is poor, and the emission performance is general. Disclosure of Invention The invention mainly aims to provide a fire grate, a burner and a water heater, which aim to enhance the mixing uniformity of fuel gas and air in the fire grate, reduce the chemical equivalent ratio of the fuel gas at the fire grate, avoid local increase Wen Xianxiang and further reduce the smoke emission of pollutants such as CO, NOx and the like. In order to achieve the above object, the present invention provides a fire grate, comprising: The fire grate body is provided with an air inlet flow passage and a mixing cavity, the mixing cavity is provided with an air outlet, the mixing cavity is communicated with the air outlet end of the air inlet flow passage, the air inlet end of the air inlet flow passage is provided with an air inlet, and The vortex piece is arranged in the air inlet flow channel, the vortex piece comprises a vortex body and a flow guiding part, the vortex body is provided with a flow guiding groove which is communicated with the flow guiding part, the flow guiding part is arranged corresponding to the flow guiding groove, the flow guiding groove is used for dispersing and disturbing air flow flowing through the vortex body, and the flow guiding part is used for guiding air flow to flow from the flow guiding groove towards the mixing cavity. In an embodiment, the spoiler body includes a first spoiler and a second spoiler, a first angle that expands towards a side away from the air inlet is formed between the first spoiler and the second spoiler, and the spoiler groove includes a first spoiler groove provided on the first spoiler and/or a second spoiler groove provided on the second spoiler. In an embodiment, the air inlet is formed in one side of the fire grate body along the length direction, the air inlet and the turbulence piece are arranged opposite to each other along the length direction of the fire grate body, the air outlet is formed in one side of the fire grate body along the height direction, the first turbulence part is obliquely arranged along the air inlet direction of the air inlet channel towards one side close to the air outlet, and the second turbulence part is obliquely arranged along the air inlet direction of the air inlet channel towards one side far away from the air outlet. In an embodiment, the first included angle is not less than 30 degrees and not more than 45 degrees. In an embodiment, the vortex body has along the relative shrink end and the expansion end that sets up of length direction of fire row body, first vortex groove is close to one side of shrink end has first edge, the water conservancy diversion portion includes first water conservancy diversion portion, first water conservancy diversion portion is including first water conservancy diversion section and the second water conservancy diversion section of bending connection, first water conservancy diversion section is followed first edge is kept away from one side slope setting of gas outlet, the second water conservancy diversion section with first vortex groove sets up relatively. In an embodiment, the turbulent flow body has a contraction end and an expansion end which are oppositely arranged along the length direction of the fire row body, one side, close to the contraction end, of the second turbulent flow groove is provided with a second edge, the flow guiding part comprises a second flow guiding part, the second flow guiding part comprises a third flow guiding section and a fourth flow guiding section which are connected in a bending mode, the third flow guiding section is obliquely arranged from the second edge towards one side, close to the air outlet, and the fourth flow guiding section is oppositely arranged with the second turbulent flow groove. In an embodiment, a plurality of turbulence protrusions are disposed at one end of the first turbulence portion and/or the second turbulence portion away from the air inlet, and the plurality of turbulence protrusions are disposed at intervals along the width direction of the fire grate body. In an embodiment, the turbulence body is enclosed on the periphery of the flow guiding portion, and the turbulence groove is located between the peripheral wall of the turbulence body and the flow guiding portion; In the air inlet direction of the air inlet flow channel, the peripheral wall of the turbulence body is contracted towards the side far away from the air inlet, and/or the p