WO2022199700A1 - 火排及其制造方法、燃烧器和热水器 - Google Patents

火排及其制造方法、燃烧器和热水器 Download PDF

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Publication number
WO2022199700A1
WO2022199700A1 PCT/CN2022/083165 CN2022083165W WO2022199700A1 WO 2022199700 A1 WO2022199700 A1 WO 2022199700A1 CN 2022083165 W CN2022083165 W CN 2022083165W WO 2022199700 A1 WO2022199700 A1 WO 2022199700A1
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WO
WIPO (PCT)
Prior art keywords
fire
hole
fire row
metal mesh
ventilation channel
Prior art date
Application number
PCT/CN2022/083165
Other languages
English (en)
French (fr)
Inventor
陈文风
王金
梁国荣
Original Assignee
芜湖美的厨卫电器制造有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 芜湖美的厨卫电器制造有限公司, 美的集团股份有限公司 filed Critical 芜湖美的厨卫电器制造有限公司
Priority to EP22774353.1A priority Critical patent/EP4273449A4/en
Publication of WO2022199700A1 publication Critical patent/WO2022199700A1/zh
Priority to US18/239,827 priority patent/US20230408147A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/0027—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/045—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with a plurality of burner bars assembled together, e.g. in a grid-like arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/10—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head
    • F23D14/105—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head with injector axis parallel to the burner head axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/145—Radiant burners using screens or perforated plates combustion being stabilised at a screen or a perforated plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F23D14/583—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/103—Flame diffusing means using screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2212/00—Burner material specifications
    • F23D2212/20—Burner material specifications metallic
    • F23D2212/201—Fibres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2213/00—Burner manufacture specifications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means

Definitions

  • the present application relates to the technical field of fluid heating equipment, in particular to a fire exhaust and its manufacturing method, a burner and a water heater.
  • the burner is the core component of the water heater.
  • the existing burner fire hole structure usually adopts a single-strip fire hole structure. Due to the small area of the fire hole, the high strength of the burning fire hole, and the poor performance of the flue gas emitted by the instantaneous combustion, the single-strip fire hole structure leads to high nitrogen oxides and cannot meet the performance requirements of low nitrogen emission. The row structure was improved.
  • the main purpose of the present application is to propose a fire exhaust, which aims to solve the technical problem that due to insufficient combustion of gas in the burner, the content of nitrogen oxides contained in the flue gas is relatively high, causing great pollution to the environment.
  • the fire row proposed in this application includes:
  • the fire row body forms a ventilation channel; the top of the fire row body is provided with a shunt hole communicating with the ventilation channel;
  • a flame stabilization device is sleeved on the upper part of the fire exhaust body; a cavity with an open top surface is formed in the flame stabilization device, and a side wall of the cavity is formed between the surface of the fire exhaust body having a gap in communication with the ventilation passage; and
  • the metal mesh is attached to the fire row body corresponding to the position of the diverter hole.
  • the number of layers of the metal mesh is multiple layers.
  • the metal mesh is located below the distribution hole.
  • the distribution holes include a plurality of first distribution holes and a plurality of second distribution holes, and an opening area of the first distribution holes is larger than an opening area of the second distribution holes.
  • a plurality of the first distribution holes and a plurality of the second distribution holes are arranged at intervals along the length direction of the top of the fire row body.
  • a plurality of the first distribution holes and a plurality of the second distribution holes are alternately arranged along the length direction of the top of the fire row body.
  • the second flow distribution hole includes a plurality of sub flow distribution holes, and the plurality of sub flow distribution holes are arranged along the width direction of the top of the fire row body.
  • the flame stabilization device is further provided with a reinforcing rib at the opening, and the reinforcing rib is fixedly connected to the metal mesh; or, the reinforcing rib is fixed to the top of the fire bar body connect.
  • the edge of at least one layer of metal mesh is bent to form a bent portion.
  • the top of the fire row body is in the shape of a plate
  • the fire row body has two side plates extending from the top to the same side thereof, and the ventilation channel is formed between the two side plates.
  • the side plate is provided with an air outlet to communicate with the ventilation channel and the gap.
  • the number of the air outlets is multiple, and the plurality of the air outlets are arranged on the side plate at intervals along the length direction of the top of the fire row body.
  • the flow area at the air outlet gradually increases from the ventilation channel to the gap.
  • the present application also discloses a method for manufacturing a fire platoon, and the manufacturing method for the fire platoon comprises the following steps:
  • a flame stabilization device for shaping the flame stabilization sheet to form a cavity with an open top surface
  • the flame stabilization device is sleeved on the upper part of the fire row body.
  • the step of shaping the metal plate to form a fire extinguisher body having a ventilation channel and a diverter hole, the diverter hole being located at the top of the firebox body and communicating with the ventilation channel includes the following steps: :
  • the two side plates are punched to form the ventilation channel between the two side plates.
  • the step of punching the two side plates to form the ventilation channel between the two side plates includes:
  • the two side panels After cutting the edges of the other three sides of the two side panels, the two side panels are fastened together so that the edge of one of the side panels wraps the edge of the other side panel after the fastener is fastened.
  • the step before the punching of the two side plates to form the ventilation channel between the two side plates, the step further includes:
  • Air outlets are provided at preset positions of the two side plates, so that after the flame stabilization device is sleeved on the upper part of the fire exhaust body, the ventilation passage communicates with the gap.
  • the present application also discloses a burner and a water heater including the burner, wherein the burner includes the aforementioned fire row, and the fire row includes a fire row body, a flame stabilization device and a metal mesh, and the fire row body forms a a ventilation channel; the top of the fire exhaust body is provided with a shunt hole communicating with the ventilation channel, and the opening corresponds to the shunt hole; the flame stabilization device is sleeved on the upper part of the fire exhaust body; the A cavity with an open top surface is formed in the flame stabilization device; and a metal mesh is attached to the fire exhaust body corresponding to the position of the diverter hole.
  • a fire hole structure and a flame stabilization device are formed by combining a distribution hole with a larger opening area and a metal mesh on the top of the fire exhaust sheet.
  • the opening area of the shunt hole is increased, so that the flue gas performance of instantaneous combustion is better, and the production of nitrogen oxides can be reduced.
  • the use of metal mesh and flame stabilizing device can form a dual flame stabilizing effect, which can improve the combustion adaptability range of a single piece of heat load, solve the problem that small loads cannot be used at a low level, and reduce the number of segments, the structure is simple, and the manufacturing is convenient. The cost is low, and it can meet the use requirements of low nitrogen emission of the whole machine.
  • FIG. 1 is a schematic structural diagram of an embodiment of a fire row of the application
  • Fig. 2 is a side view of Fig. 1;
  • Fig. 3 is A-section view in Fig. 1;
  • Fig. 4 is the flow direction schematic diagram of air flow in Fig. 3;
  • Fig. 5 is another side view in Fig. 1;
  • FIG. 6 is a schematic structural diagram of another embodiment of the shunt hole in FIG. 5;
  • FIG. 7 is a schematic structural diagram of a first implementation of the burner of the present application.
  • Fig. 8 is the structural representation of the fire row body in Fig. 1;
  • Figure 9 is a side view of Figure 8.
  • FIG. 10 is a schematic structural diagram of another embodiment of the shunt hole in FIG. 9;
  • Figure 11 is another side view of Figure 8.
  • Fig. 12 is B-B sectional view in Fig. 8;
  • Fig. 13 is another structural schematic diagram of the metal mesh in Fig. 12;
  • FIG. 14 is a schematic structural diagram of another embodiment of the fire row body in FIG. 1;
  • Figure 15 is a C-C sectional view in Figure 14;
  • Fig. 16 is another structural schematic diagram of the metal mesh in Fig. 15;
  • Fig. 17 is the enlarged view of the place A in Fig. 16;
  • Fig. 18 is the structural representation of the flame stabilization device in Fig. 1;
  • Figure 19 is a side view of Figure 18;
  • Figure 20 is another side view of Figure 18;
  • Figure 21 is a D-D sectional view in Figure 18;
  • 22 is a schematic flowchart of an embodiment of a method for manufacturing a fire pit of the present application.
  • FIG. 23 is a schematic flowchart of another embodiment of the fire pit manufacturing method of the present application.
  • FIG. 24 is a schematic flowchart of another embodiment of a fire pit manufacturing method of the present application.
  • FIG. 25 is a schematic flow chart of still another embodiment of a fire pit manufacturing method of the present application.
  • 26 is a schematic structural diagram of another embodiment of the fire row of the present application.
  • FIG. 27 is a schematic structural diagram of yet another embodiment of a fire row of the application.
  • Figure 28 is a schematic structural diagram of the fire row body in Figure 26;
  • FIG. 29 is a cross-sectional view of C1-C1 in FIG. 28 .
  • the directional indication is only used to explain the relative positional relationship, movement situation, etc. between the components under a certain posture. If the specific posture changes , the directional indication changes accordingly.
  • the fire row 10 includes a fire row body 100, a flame stabilization device 200 and a metal mesh 300, wherein the fire row body 100 forms a ventilation channel 110; the The top 130 of the fire exhaust body 100 is provided with a shunt hole 120 communicating with the ventilation channel 110; the flame stabilization device 200 is sleeved on the upper part of the fire exhaust body 100; the flame stabilization device 200 is formed with an open top surface.
  • the fire row 10 is mainly used on the burner, and the fire row 10 is one of the core components of the burner.
  • the structure of the fire row 10 plays a key role in the low NOx combustion technology of the gas water heater burner.
  • the fire exhaust 10 includes a fire exhaust body 100, a flame stabilization device 200 and a metal mesh 300.
  • a ventilation channel 110 is formed in the fire exhaust body 100, and the ventilation channel 110 has an air inlet.
  • the air flow source is connected, the air flow source includes air and gas, the gas and air enter the ventilation channel 110 from the air inlet, the gas and air are pre-mixed in the ventilation channel 110, and then fully mixed through the metal mesh 300 or the shunt hole 120 After the flow and the split, the top 130 of the fire row 10 is finally ignited, and then a stable and uniform flame is formed.
  • the opening area of the shunt hole 120 in the present application is larger than the opening area of the existing common small elongated shunt hole 120, which is generally between 5 times and 100 times that of the current common holes.
  • the shunt hole 120 may be circular , oval, square or other regular or irregular shape design, the following will take the square as an example to introduce.
  • a metal mesh is attached to the fire exhaust body 100 , and the metal mesh is arranged corresponding to the shunt hole 120 . Further, considering that the opening area of the metal mesh is large, in order to prevent an explosion accident caused by tempering, please refer to Figure 3, Figure 12, and Figures 15 to 17, and the metal mesh is provided with multiple layers.
  • the setting of the number of layers of the metal mesh is related to the mesh number of the metal mesh 300. The number of layers of the mesh in the metal mesh 300 is negatively correlated with the mesh number of the mesh.
  • the number of corresponding layers is large, for example, the number of layers of the metal mesh 300 includes, but is not limited to, 2 to 10 layers, specifically 2 layers, 3 layers, 5 layers, 8 layers or 10 layers.
  • the commonly used metal meshes are 20 to 100 meshes, specifically 20, 40, 50, 60, 80 or 100 meshes. Considering that too many layers may lead to insufficient air supply, And the metal mesh with larger mesh is expensive. After testing and research, the preferred combination of metal mesh 300 is 50 meshes and 3 layers.
  • the metal mesh 300 is attached to the top 130 of the fire exhaust body, and at the same time, the area of the shunt hole 120 is increased, so that the instantaneous combustion of the fire exhaust 10 and the emission of flue gas performance are better, and the generation of nitrogen oxides can be reduced.
  • the main structure of the metal mesh 300 as the fire hole has the effect of stabilizing the flame, which can improve the thermal load of the fire row 10 single piece and increase the combustion adaptability range, which can solve the problem that the small load cannot be used for low, so that it can reduce the number of sections, and the structure is simple.
  • the utility model has the advantages of convenient manufacture, low cost, and can meet the use requirements of low nitrogen emission of the whole machine.
  • the metal mesh 300 is attached to the fire exhaust body 100 corresponding to the position of the distribution hole 120 .
  • the metal mesh 300 may be attached to the inside of the fire exhaust body 100 corresponding to the position of the distribution hole 120 , that is, the metal mesh 300 is actually located in the ventilation channel 110 .
  • the metal mesh 300 may also be attached to the outer surface of the fire exhaust body 100 corresponding to the position of the distribution hole 120 , that is, the metal mesh 300 is located on the top of the flame stabilization device 200 and the top of the fire exhaust body 100 . 130 , and is disposed close to the top 130 of the fire row body 100 .
  • the metal mesh 300 first divides the airflow mixed with the air and gas from the ventilation channel 110 for the first time, and then passes through the metal mesh 300 for sufficient diversion and mixing. Finally, it burns above the shunt hole 120 to form a stable and uniform flame. This embodiment protects the metal mesh 300 better, and the life of the metal mesh 300 is longer. , the flame is relatively uniform and stable.
  • the air mixed with the air and gas from the ventilation channel 110 first passes through the diverting hole 120 for the first diversion, and then passes through the metallic mesh 300 for sufficient diversion and mixing, and finally It burns above the metal mesh 300 to form a stable and uniform flame.
  • the damage to the metal mesh 300 will be greater in this embodiment, but the combustion of the gas is more sufficient than the previous implementation, and the flame is also more uniform and stable.
  • the distribution hole 120 may be a distribution of flames, or may be an airflow that mixes specific air and gas, depending on where the metal mesh 300 is installed.
  • the fire exhaust 10 further includes a flame stabilization device 200, and the flame stabilization device 200 is sleeved on the upper part of the fire exhaust body 100;
  • the top surface is a cavity 210 provided with an opening 211 , and the opening 211 corresponds to the shunt hole 120 .
  • FIG. 3 and FIG. 18 to FIG. 21 for details.
  • the flame guide portion 240 is located in the width direction of the top 130 of the fire row body, and the flame guide portion 240 extends upwardly and toward the outside relative to the horizontal direction.
  • a gap 212 is formed between the side wall of the cavity 210 and the surface of the fire exhaust body 100 , and the gap 212 communicates with the ventilation channel 110 . . In this way, the design of the gap 212 in the flame stabilization device 200 communicates with the ventilation channel 110, which increases the air outlet space, thereby reducing the resistance of the airflow.
  • the gap 212 should not be too large, and is expected to be between 2mm and 20mm, for example, including but not limited to 2mm, 3mm, 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm.
  • the flow dividing device of the burner in the related art is usually provided with a plurality of strip-shaped flow dividing holes with the same shape.
  • the overall flow area of the shunt device is small, resulting in a large mixture gas pressure flowing through the shunt device, and the combustion intensity during the combustion process of the mixture is too high, which makes the mixture gas. Insufficient combustion results in high levels of nitrogen oxides formed during the combustion process.
  • processing a plurality of strip-shaped shunt holes on the shunt device results in a complicated structure of the shunt device, and has the defects of high processing difficulty and low processing efficiency.
  • a fire hole structure and a flame stabilization device 200 are formed by combining the distribution holes 120 with larger opening area and the metal mesh 300 on the top 130 of the fire row 10 .
  • the opening area of the shunt hole 120 is increased, so that the flue gas performance of instantaneous combustion is better, and the generation of nitrogen oxides can be reduced.
  • the use of the metal mesh 300 and the flame stabilization device 200 can form a dual flame stabilization effect, which can improve the combustion adaptability range of a single piece of heat load, and can solve the problem that small loads cannot be used for low levels, so that it can reduce the number of segments, the structure is simple, and the manufacturing process is simple. It is convenient, low cost, and can meet the use requirements of low nitrogen emission of the whole machine.
  • the distribution holes 120 are arranged at intervals along the length direction of the top 130 of the fire bar body. Further, the distribution hole 120 includes a plurality of first distribution holes 121 and a plurality of second distribution holes 122 , and the plurality of first distribution holes 121 and the plurality of second distribution holes 122 are located along the fire row body. The tops 130 are spaced apart in the length direction.
  • a plurality of the first distribution holes 121 and a plurality of the second distribution holes 122 are arranged alternately and spaced along the length direction of the top 130 of the fire row body cloth.
  • the second distribution hole 122 in order to further increase the secondary contact area between the gas and the air, includes a plurality of sub-distribution holes 122a, and the plurality of the sub-distribution holes 122a are located along the fire row.
  • the top 130 of the body is arranged in the width direction, and the opening area of the first distribution hole 121 is larger than the opening area of the second distribution hole 122 . In this way, by disposing the diverter holes 120 with different area sizes, the area of the secondary contact between the gas and the air is increased.
  • the metal mesh 300 can be stacked in many ways, such as roller shutter shape or S shape. It is worth mentioning that, in order to improve the strength of the metal mesh 300 and improve the flame combustion stability, the edges of each layer of metal mesh are bent to form bending portions 310. higher intensity.
  • the folded edges can be both sides in the width direction, or both sides in the length direction. From the perspective of effect, the bending tension at both ends of the metal mesh in the length direction is greater, and the strength of the metal mesh is also greater.
  • the bent part 310 of each layer of metal mesh is connected to the bent part 310 or the mesh of another layer, and a gap is formed between the two adjacent layers of metal mesh, so that the airflow can flow through the metal mesh.
  • the resistance of the 300 is reduced to ensure sufficient airflow.
  • the flame stabilization device 200 is further provided with a reinforcing rib 220 at the opening 211 .
  • the metal mesh 300 is fixedly connected; or, the reinforcing rib 220 is fixedly connected to the top 130 of the fire row body 100 .
  • the flame stabilization device 200 includes two side plates which are arranged in a mutually engaging manner.
  • the hulls 230 are arranged at intervals along the length direction of the flame stabilization device 200; wherein, the lateral convex hulls 230 include an inner convex hull 232 and at least two outer convex hulls 231; the inner convex hulls 232 protrude toward the cavity In the body 210 , the at least two outer convex hulls 231 protrude toward the outside of the fire row 10 ; the inner convex hulls 232 are arranged between the at least two outer convex hulls 231 .
  • the two side panels are named as the first side panel and the second side panel for introduction:
  • the first side plate and the second side plate are formed by engaging with each other, and a plurality of lateral convex hulls 230 are respectively provided along the length direction thereof, and the plurality of lateral convex hulls 230 are formed along the first side plate or the second side plate.
  • the plates are arranged at intervals in the length direction.
  • the lateral convex hull 230 includes an inner convex hull 232 and at least two outer convex hulls 231 ; the inner convex hull 232 protrudes toward the cavity 210 , and the protruding direction of the at least two outer convex hulls 231 is the same as that of all the outer convex hulls 231 .
  • the protruding directions of the inner convex hulls 232 are opposite; in this way, the design of the inner and outer convex hulls 231 can firstly facilitate the positioning of the flame stabilization device 200 during installation, and secondly, the flame stabilization device 200 and the outer wall of the cavity 210 are formed. Ventilation channel, the outer convex hull 231 ensures the secondary air intake channel between the fire exhausts 10.
  • the convex hull of the first side plate and the lateral convex hull 230 of the second side plate are in the fire
  • the row bodies 100 are symmetrically distributed in the width direction.
  • first side plate and the second side plate are provided with a flame guide portion 240 extending upward; for example, the flame guide portion 240 may be formed by the first side plate and the second side plate The top edge of the vertical direction extends upward and outward.
  • the flame guide portion 240 By arranging the flame guide portion 240 on the top edges of the first side plate and the second side plate, the flame formed at the combustion panel can be guided, so that the side flame is directed toward the center of the single body of the fire row 10 The area is gathered, which is beneficial to improve the heat accumulation effect during the combustion process.
  • the top 130 of the fire row body 100 is plate-shaped, and the fire row body 100 has a Two side plates 140, the ventilation channel 110 is formed between the two side plates, in order to further improve the stability of the flame, the side plate has an air outlet 150 to communicate with the ventilation channel 110 and the gap 212,
  • the air outlet 150 through the arrangement of the air outlet 150, the air outlet space of the mixed gas is increased on both sides, so as to reduce the resistance of the mixed air flow, so that the mixed air can stay above the fire exhaust 10 for a slightly longer time, thereby further improving the gas
  • the combustion rate of combustion further reduces the nitrogen content after gas combustion.
  • the number of the air outlets 150 is multiple.
  • a plurality of the air outlets 150 are arranged at intervals along the length direction of the top 130 of the fire bar body on the side plate. Further, referring to FIG. 17 , the flow area of the air outlet 150 gradually increases from the ventilation channel 110 to the gap 212 . That is to say, the air outlet 150 is designed in a horn shape, and further, the part where the air outlet 150 is located is convex toward the ventilation passage 110 to further reduce the resistance of the mixed airflow.
  • the present application also discloses a method for manufacturing the fire row 10, that is, how to manufacture the aforementioned fire row 10.
  • the manufacturing method for the fire row 10 includes the following steps:
  • the flame stabilization device 200 is sleeved on the upper part of the fire row body 100.
  • the metal plate is reshaped to form the fire exhaust body 100 having the ventilation channel 110 and the diverter hole 120, wherein the metal plate is a metal plate with a relatively thin thickness, and needs to have a certain rigidity and High temperature resistant properties. Then the iron plate is shaped according to the preset shape, so that the iron plate forms the preliminary shape of the fire row body 100, and finally the other three sides of the metal plate are cut, etc., and then the other three sides of the metal plate are buckled to form a ventilation Fire exhaust body 100 of channel 110 and diverter hole 120 .
  • the metal mesh 300 may be attached to the inside of the fire exhaust body 100 corresponding to the position of the distribution hole 120 , that is, the metal mesh 300 is actually located in the ventilation channel 110 .
  • the metal mesh 300 may also be attached to the outer surface of the fire exhaust body 100 corresponding to the position of the distribution hole 120 , that is, the metal mesh 300 is located on the top of the flame stabilization device 200 and the top of the fire exhaust body 100 . 130 , and is disposed close to the top 130 of the fire row body 100 .
  • the metal mesh 300 In the embodiment in which the metal mesh 300 is attached inside the fire exhaust body 100 , the metal mesh 300 needs to be fixed first before the other three sides of the metal plate are fastened together to form the fire exhaust body 100 with the ventilation channel 110 and the diverter hole 120 . At the position of the fire row body 100 corresponding to the shunt hole 120 . In the embodiment in which the metal mesh 300 is attached to the outside of the fire exhaust body 100, the metal mesh 300 may be directly fixed at the position of the fire exhaust body 100 corresponding to the diverter hole 120, or the metal mesh 300 may be directly fixed on the stable first.
  • the metal mesh 300 is temporarily pre-installed on the flame stabilization device 200 or the fire exhaust body 100, and the flame stabilization device 200 is sleeved on the upper part of the fire exhaust body 100.
  • the mesh 300 is fixed to the fire exhaust body 100 or the flame stabilization device 200 , that is to say, it is only necessary to finally ensure that the metal mesh 300 is attached to the fire exhaust body 100 at the position corresponding to the shunt hole 120 . .
  • the flame stabilizing sheet 201 is also similar to the above-mentioned metal sheet.
  • One of the manufacturing methods of the flame stabilizing device 200 is to shape the original flame stabilizing sheet 201, then wrap the upper part of the fire row body 100 from both sides, and finally assemble the two sheets. Fasten the flame to fasten.
  • it can also be a piece of metal plate, which is shaped by punching, bending and other processes according to a preset shape to form the initial shape of the flame stabilization device 200 with the top surface opening 211 setting the cavity 210, and then wrapping it on the fire row After the top 130 of the main body 100 is closed, the fastening is performed.
  • the flame stabilization device 200 is provided with a reinforcing rib 220 at the opening 210, and the reinforcing rib 220 is usually fixedly connected to the metal mesh 300, or the reinforcing rib 220 is usually The top 130 of the row body 100 is directly connected.
  • the above-mentioned metal plates are generally selected from thin iron plates.
  • the fixing method of the metal mesh 300 and the fire exhaust body 100 and the fixing method of the metal mesh 300 and the flame stabilization device 200 include, but are not limited to, welding, and will not be repeated here. Preferably, among the welding methods, spot welding is preferred.
  • the manufacturing method of the present application only needs processes such as stamping, bending and cutting, which reduces the use of welding processing methods and reduces the processing technology or processing steps, thereby improving the production efficiency of the fire row 10 .
  • the metal plate is shaped to form a fire exhaust body 100 having a ventilation channel 110 and a diverter hole 120 , and the diverter hole 120 is located on the top 130 of the fire exhaust body 100 , and
  • the step of communicating with the ventilation channel 110 includes:
  • S21 includes two schemes:
  • the diverter hole 120 can be punched out at a predetermined position first, or the position of the metal hole can be reserved first. , taking the reserved part as the central axis, bending both ends of the metal plate to the same side to form the top 130 of the fire row body 100 and the two sides extending from the top 130 to the same side plate 140. Then, according to the preset shape and position of the ventilation channel 110 , the two side plates are punched to form the ventilation channel 110 after the two side plates 140 are fastened together.
  • the step of punching the two side plates to form the ventilation channel 110 between the two side plates 140 includes:
  • the two side panels 140 are fastened together so that the edge of one of the side panels wraps the edge of the other side panel after being fastened.
  • the edges of the other three sides of the two side plates are cut, so that the edge of one side plate wraps the other side plate.
  • the edge of one side plate can strengthen the close fit between the two sides, thereby ensuring the airtightness of the ventilation channel 110 .
  • the step before the punching of the two side plates to form the ventilation channel 110 between the two side plates 140, the step further includes:
  • Air outlets 150 are opened at preset positions of the two side plates; after the flame stabilization device 200 is sleeved on the upper part of the fire exhaust body 100 , the ventilation passage 110 communicates with the gap 212 .
  • the present application also proposes a burner, which includes the aforementioned burner 10.
  • the specific structure of the burner 10 refers to the above-mentioned embodiments. Since the burner adopts all the technical solutions of all the above-mentioned embodiments, it has at least the above-mentioned All the beneficial effects brought by the technical solutions of the embodiments will not be repeated here.
  • the burner may be an atmospheric burner, a rich-lean burner, or a water-cooled burner and other types of burners.
  • the fire row 10 includes two side plates that are buckled together.
  • the two side plates are respectively provided with lateral bosses 230.
  • the lateral bosses 230 are disposed adjacent to the tops 130 of the side plates, and the tops 130 of the lateral bosses 230 are open.
  • the port 211 forms a flame stabilization hole.
  • the first side plate and the second side plate are respectively provided with a plurality of lateral convex hulls 230 adjacent to the edge of the top 130 , and the plurality of lateral convex hulls 230 are along the first side plate or the second side plate. Lengthwise spaced.
  • the inner side of the lateral convex hull 230 defines a flow channel that communicates with the ventilation channel 110 , and the opening 211 of the top 130 of the flow channel forms a flame stabilization hole.
  • the two rows of flame stabilization holes on the first side plate and the second side plate are respectively located on both sides of the fire bar body 100 , and the two rows of flame stabilization holes are symmetrically distributed in the width direction of the fire bar 10 .
  • the side flames formed at the two rows of flame stabilization holes located on both sides of the fire splitting device can stabilize the flame formed above the fire splitting device, thereby further improving the flame stability during the combustion process of the burner.
  • the flame guide portion 240 may be formed by the top edge of the lateral convex hull 230 extending upward and toward the outside relative to the horizontal direction. By arranging the flame guide portion 240 on the lateral convex hull 230, the side flame formed at the flame stabilization hole can be guided, so that the side flame is gathered toward the central area of the fire row 10, which is beneficial to increase the heat during the combustion process. agglomeration effect.
  • the application also proposes a water heater, the water heater includes the aforementioned burner, and the burner includes the aforementioned fire row.
  • the specific structure of the fire row refers to the above-mentioned embodiment, because the burner adopts all the technical solutions of all the above-mentioned embodiments. , therefore at least all the beneficial effects brought by the technical solutions of the above embodiments are provided, which will not be repeated here.

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Abstract

一种火排(10)及其制造方法、应用该火排的燃烧器和热水器。该火排(10)包括火排本体(100)、稳焰装置(200)以及金属网(300)，火排本体(100)形成通气通道(110)；火排本体(100)的顶部(130)设置有与通气通道(110)连通的分流孔(120)；稳焰装置(200)设在火排本体(100)的上部；稳焰装置(200)内形成顶面呈敞口(211)设置的腔体(210)，腔体(210)的侧壁与火排本体(100)的表面之间形成有间隙(212)，间隙(212)与通气通道(110)连通；金属网(300)对应分流孔(120)的位置贴设于火排本体(100)上。金属网(300)和稳焰装置(200)可形成双重稳焰作用，能提高单片热负荷燃烧适应范围，分流孔(120)的开孔面积增大，瞬间燃烧排放烟气性能好，能满足整机低氮排放的使用要求。

Description

火排及其制造方法、燃烧器和热水器
相关申请
本申请是要求“2021年03月25日申请的、申请号为202120612600.9，申请名称为分火装置、燃烧器和水加热设备”的中国专利申请的优先权，并将其全部内容通过引用结合在本申请中。
技术领域
本申请涉及流体加热设备技术领域，特别涉及一种火排及其制造方法、燃烧器和热水器。
背景技术
在相关现有技术中，燃烧器是热水器的核心部件。现有的热水器燃烧器在低氮氧化物燃烧技术方面，有采用全预混的燃烧技术、浓淡燃烧技术和水冷燃烧技术，而现有燃烧器火孔结构通常采用单条形火孔结构，这种单条形火孔结构因火孔面积小，燃烧的火孔强度高，瞬间燃烧所排放的烟气性能不好，导致氮氧化物较高，不能满足低氮排放性能要求，因此有必要对其火排的结构进行改进。
申请内容
本申请的主要目的是提出一种火排，旨在解决由于燃烧器内燃气燃烧不充分，烟气含有的氮氧化物的含量比较高，对环境造成较大污染的技术问题。
为实现上述目的，本申请提出的火排包括：
火排本体，所述火排本体形成通气通道；所述火排本体的顶部设置有与所述通气通道连通的分流孔；
稳焰装置，套设在所述火排本体的上部；所述稳焰装置内形成顶面呈敞口设置的腔体，所述腔体的侧壁与所述火排本体的表面之间形成有间隙，所述间隙与所述通气通道连通；以及
金属网，对应所述分流孔的位置贴设于所述火排本体上。
在一实施例中，所述金属网的层数为多层。
在一实施例中，所述金属网位于所述分流孔的下方。
在一实施例中，所述分流孔包括多个第一分流孔和多个第二分流孔，所述第一分流孔的开孔面积大于所述第二分流孔的开孔面积。
在一实施例中，多个所述第一分流孔和多个所述第二分流孔沿所述火排本体顶部的长度方向间隔排布。
在一实施例中，多个所述第一分流孔和多个所述第二分流孔沿所述火排本体顶部的长度方向交替间隔排布。
在一实施例中，所述第二分流孔包括多个子分流孔，多个所述子分流孔沿所述火排本体顶部的宽度方向排布。
在一实施例中，所述稳焰装置于所述敞口处还设有加强筋，所述加强筋与所述金属网固定连接；或者，所述加强筋与所述火排本体的顶部固定连接。
在一实施例中，至少一层金属网的边缘弯折形成折弯部。
在一实施例中，所述火排本体的顶部呈板状，所述火排本体具有自所述顶部向其同一侧延伸设置的两侧板，两所述侧板之间形成所述通气通道，所述侧板上有出气口，以连通所述通气通道和所述间隙。
在一实施例中，所述出气口的数量为多个，多个所述出气口在所述侧板上沿所述所述火排本体顶部的长度方向间隔排布。
在一实施例中，所述出气口处的过流面积自所述通气通道向所述间隙逐渐增大。
本申请还公开一种火排的制造方法，该火排的制造方法包括以下步骤：
准备金属板、金属网以及稳焰片；
对所述金属板整形而形成具有通气通道和分流孔的火排本体，所述分流孔位于所述火排本体的顶部，并与所述通气通道连通；
对所述稳焰片整形而形成具有顶面敞口的腔体的稳焰装置；
将所述金属网对应所述分流孔的位置固定在所述火排本体上；或者，将所述金属网对应所述分流孔的位置固定在所述稳焰装置上；
将所述稳焰装置套设在所述火排本体上部。
在一实施例中，所述对所述金属板整形而形成具有通气通道和分流孔的火排本体，所述分流孔位于所述火排本体的顶部，并与所述通气通道连通的步骤包括：
将所述金属板的两端向其同一侧折弯，以形成所述火排本体的顶部和自所述顶部向其同一侧延伸设置的两侧板；其中，在所述金属板折弯之前，于所述顶部对应的位置冲裁出所述分流孔，或者在折弯之后，在所述顶部冲裁出所述分流孔；
对两所述侧板进行冲压，以在两侧板之间形成所述通气通道。
在一实施例中，所述对两所述侧板进行冲压，以在两侧板之间形成所述通气通道的步骤包括：
按通气通道预设的形状，于两所述侧板对应的位置进行冲压；
对两所述侧板其它三边的边缘裁剪后，将两侧板扣合，并使得扣合后其中一个侧板的边缘包裹另一侧板的边缘。
在一实施例中，在所述对两所述侧板进行冲压，以在两侧板之间形成所述通气通道之前，还包括步骤：
于两所述侧板的预设位置开设出气口；以使稳焰装置套设于所述火排本体上部之后，所述通气通道连通所述间隙。
本申请还公开一种燃烧器及包括该燃烧器的热水器，其中，所述燃烧器包括前述的火排，所述火排包括火排本体、稳焰装置和金属网，所述火排本体形成通气通道；所述火排本体的顶部设置有与所述通气通道连通的分流孔，所述敞口对应所述分流孔；所述稳焰装置套设在所述火排本体的上部；所述稳焰装置内形成顶面呈敞口设置的腔体；以及金属网，对应所述分流孔的位置贴设于所述火排本体上。
本申请的技术方案通过在火排片顶部设有由开孔面积较大的分流孔和金属网结合形成火孔结构以及稳焰装置。其中，把分流孔的开孔面积增大，使瞬间燃烧排放烟气性能更好，并可降低氮氧化物的产生。再者，采用金属网和稳焰装置可形成双重稳焰作用，能提高单片热负荷燃烧适应范围，可解决小负荷不能做低的使用问题，使其减少分段，结构简单，制造方便，成本低，并能满足整机低氮排放的使用要求。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请火排一实施例的结构示意图；
图2为图1的一侧视图；
图3为图1中A-剖视图；
图4为图3中气流的流向示意图；
图5为图1中另一侧视图；
图6为图5中分流孔另一实施例的结构示意图；
图7为本申请燃烧器一实施的结构示意图；
图8为图1中火排本体的结构示意图；
图9为图8的一侧视图；
图10为图9中分流孔另一实施例的结构示意图；
图11为图8的另一侧视图；
图12为图8中B-B剖视图；
图13为图12中金属网的另一结构示意图；
图14为图1中火排本体的另一实施例的结构示意图；
图15为图14中C-C剖视图；
图16为图15中金属网的另一结构示意图；
图17为图16中A处的放大图；
图18为图1中稳焰装置的结构示意图；
图19为图18的一侧视图；
图20为图18的另一侧视图；
图21为图18中D-D剖视图；
图22为本申请火排制造方法一实施例的流程示意图；
图23为本申请火排制造方法另一实施例的流程示意图；
图24为本申请火排制造方法又一实施例的流程示意图；
图25为本申请火排制造方法再一实施例的流程示意图；
图26为本申请火排另一实施例的结构示意图；
图27为本申请火排再一实施例的结构示意图；
图28为图26中火排本体的结构示意图；
图29为图28中C1-C1的剖视图。
附图标号说明：
标号 名称 标号 名称
10 火排 122 第二分流孔
100 火排本体 122a 子分流孔
130 火排本体的顶部 200 稳焰装置
140 侧板 210 腔体
150 出气口 211 敞口
110 通气通道 212 间隙
120 分流孔 220 加强筋
121 第一分流孔 300 金属网
230 侧向凸包 231 外凸包
232 内凸包 240 导焰部
201 稳焰片 310 折弯部
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，若本申请实施例中有涉及方向性指示，则该方向性指示仅用于解释在某一特定姿态下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本申请实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，若全文中出现的“和/或”的含义为，包括三个并列的方案，以“A和/或B”为例，包括A方案，或B方案，或A和B同时满足的方案。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
在本申请的实施例中，如图1至图21所示，火排10包括火排本体100、稳焰装置200以及金属网300，其中，所述火排本体100形成通气通道110；所述火排本体100的顶部130设置有与所述通气通道110连通的分流孔120；稳焰装置200，套设在所述火排本体100的上部；所述稳焰装置200内形成顶面呈敞口211设置的腔体210，所述腔体210的侧壁与所述火排本体100的表面之间形成有间隙212，所述间隙212与所述通气通道110连通；所述金属网300，对应所述分流孔120的位置贴设于所述火排本体100上。
其中，所述火排10主要用于燃烧器上，火排10是燃烧器的核心部件之一，在燃气热水器燃烧器在低氮氧化物燃烧技术方面，火排10的结构起到关键性作用。就火排10而言，火排10包括火排本体100、稳焰装置200和金属网300，火排本体100内形成通气通道110，所述通气通道110具有进气口，进气口通常与气流源连接，气流源包括空气和燃气，燃气和空气从进气口进入通气通道110，燃气和空气在通气通道110内进行了预混合，再经过金属网300或者分流孔120的进行充分的混合和分流后，最后在火排10的顶部130被点燃，而后形成稳定且均匀的火焰。
需要注意的是，在本申请的实施例中，为了提高火排10的热负荷，使其适应性范围提高，进而瞬间燃烧排放烟气性能更好，最后实现燃烧后产生的氮氧化物更低，本申请分流孔120的开孔面积是现有常见的细小长条形的分流孔120的开孔面积大，一般在是现在常见孔的5倍至100倍之间，示例性地，包括但不限于5倍、6倍、8倍、10倍、20倍、30倍、40倍、50倍、60倍、70倍、80倍、90倍和100倍，所述分流孔120可以呈圆形、椭圆形、方形或其它规则或者不规则的形态设计，下面以方形为例进行介绍。
其次，考虑到分流孔120开孔面积的过大，为了避免产生回火的现象，在所述火排本体100上贴设有金属网，且所述金属网对应所述分流孔120设置。进一步地，考虑到金属网的开孔面积大小较多，为了防止回火造成爆炸事故，请参阅图3、图12、图15至17，金属网设置为多层。金属网的层数设定与金属网300的目数相关，金属网300中网的层数和网的目数呈负相关，即目数多的金属网相应的层数少， 目数少的相应层数多，例如，金属网300的层数包括但不限于2～10层，具体可以是2层、3层、5层、8层或者10层。常用的金属网目数有20目至100目，具体可以是20目、40目、50目、60目、80目或者100目，考虑到过多的层数可能会导致气流的供应量不足，以及目数较大的金属网价格昂贵，经过测试研究，金属网300优选的组合为50目和3层。如此，在火排本体顶部130贴设有金属网300，同时，将分流孔120面积增大，使得火排10瞬间燃烧排放烟气性能更好，并可降低氮氧化物的产生，同时，采用金属网300做火孔的主要结构有稳焰作用，可提高火排10单片的热负荷燃烧适应范围增大，可解决小负荷不能做低的使用问题，使其减少分段，结构简单，制造方便，成本低，并能满足整机低氮排放的使用要求。
进一步地，所述金属网300，对应所述分流孔120的位置贴设于所述火排本体100上。在此，金属网300可以是对应所述分流孔120的位置贴设于火排本体100的内部，也就是说，所述金属网300其实位于通气通道110内。金属网300也可以是对应所述分流孔120的位置贴设于火排本体100的外表面，也就是说，所述金属网300位于稳焰装置200的顶部和所述火排本体100的顶部130之间，并且贴着所述火排本体100的顶部130设置。另外在金属网300贴设于火排本体100内部的实施例中，金属网300先将从通气通道110空气和燃气混合的气流进行第一次的分流，再经过金属网300充分的分流混合，最后在分流孔120的上方燃烧，形成稳定且均匀的火焰，本实施例对金属网300的保护更好，金属网300的寿命会更长，同时，火焰的燃烧比将金属网300会更加充分，火焰相对地均匀和稳定。在金属网300贴设于火排本体100外部的实施例中，从通气通道110空气和燃气混合的气流先进过分流孔120进行第一次的分流，再经过金属网300充分的分流混合，最后在金属网300的上方燃烧，形成稳定且均匀的火焰，本实施例对金属网300的损害会更大，但是燃气的燃烧比前一实施的更加充分，火焰也更加均匀和稳定。此外，还需要说明的是，分流孔120可以是将火焰的分流，也可以是将具体的空气和燃气混合的气流，这取决金属网300安装的位置。
更进一步地，为了进一步提升火焰的稳定性，所述火排10还包括稳焰装置200，所述稳焰装置200套设在所述火排本体100的上部；所述稳焰装置200内形成顶面呈敞口211设置的腔体210，所述敞口211对应所述分流孔120。详细请参阅图3、图18至图21，稳焰装置200做为稳焰设置的方案至少有以下两种，一是在所述稳焰装置200于所述敞口211处设置导焰部240，所述导焰部240位于所述火排本体顶部130的宽度方向，所述导焰部240向上且相对水平方向朝向外侧延伸形成。通过在火排本体顶部130的宽度方向的两侧边设置导焰部240，可以对分流孔120处形成的侧焰起到导向的作用，以使侧焰朝向火排10的目标区域聚拢，有利于提高燃烧过程中热量的集聚效果。二是，通过对稳焰装置200整体结构的设置，使得所述腔体210的侧壁与所述火排本体100的表面之间形成有间隙212，所述间隙212与所述通气通道110连通。这样，稳焰装置200中间隙212连通通气通道110的设计，增大了出气空间，进而减小气流的阻力。可以理解的是，同样为了确保安全，所述间隙212不宜过大，预计在2mm～20mm之间，示例性地，包括但不限于2mm、3mm、4mm、6mm、8mm、10mm、12mm、14mm、16mm、18mm、20mm。
相关技术中燃烧器的分流装置，通常设置有多个形状相同的条形分流孔。一方面，由于单个条形分流孔的面积较小，分流装置整体的流通面积较小，导致流经分流装置的混合气压强较大，混合气燃烧过程中的燃烧强度过高，从而使混合气未能充分燃烧，致使燃烧过程中所形成的氮氧化物的含量较高。另一方面，在分流装置上加工多个条形分流孔，导致分流装置的结构较为复杂，存在加工难度大以及加工效率低的缺陷。
本申请的技术方案通过在火排10片顶部130设有由开孔面积较大的分流孔120和金属网300结合形成火孔结构以及稳焰装置200。其中，把分流孔120的开孔面积增大，使瞬间燃烧排放烟气性能更好，并可降低氮氧化物的产生。再者，采用金属网300和稳焰装置200可形成双重稳焰作用，能提高单片热负荷燃烧适应范围，可解决小负荷不能做低的使用问题，使其减少分段，结构简单，制造方便，成本低，并能满足整机低氮排放的使用要求。
请参阅图5和图6，在一实施例中，为了在确保低氮燃烧的前提下，降低加工工艺的难度，所述分流孔120沿所述火排本体顶部130的长度方向间隔排布。进一步地，所述分流孔120包括多个第一分流孔121和多个第二分流孔122，多个所述第一分流孔121和多个所述第二分流孔122沿所述火排本体顶部130的长度方向间隔排布。
请参阅图6或者图10，在上一实施例的基础上，多个所述第一分流孔121和多个所述第二分流孔122沿所述火排本体顶部130的长度方向交替间隔排布。或者，在其它一些优选的实施例中，为了进一步提高燃气与空气二次接触的面积，所述第二分流孔122包括多个子分流孔122a，多个所述子分流孔122a沿所述火排本体顶部130的宽度方向排布，所述第一分流孔121的开孔面积大于所述第二分流孔122的开孔面积。这样，通过面积大小不同的分流孔120设置，提高燃气与空气二次接触的面积。
请参阅图3、图12、图15至17，在另一实施例中，金属网300的堆叠方式有很多种，例如：卷帘形或者S形等等。值得一提的是，为了提高金属网300的强度和提高火焰燃烧稳定性，每一层金属网相对两边的边缘弯折形成折弯部310，折弯处会产生张力，折弯后的金属网的强度更高。在此，折边处可以是宽度方向的两边，也可以是长度方向的两边，从效果的角度上去考量，金属网长度方向的两端折弯的张力更大，金属网的强度也更大，同时，每层金属网的折弯部310与另一层的折弯部310或者网相接，并使得相邻的两层金属网之间形成有间距，这样设置，可以使得气流流经金属网300的阻力减小，保证足够的气流。
请参阅图18至图21，值得一提的是，为了加强稳焰装置200结构的强度，所述稳焰装置200于所述敞口211处还设有加强筋220，所述加强筋220与所述金属网300固定连接；或者，所述加强筋220与所述火排本体100的顶部130固定连接。与此同时，为了提高火排10的燃烧率，所述稳焰装置200包括相互扣合设置的两个侧板，两个所述侧板分别设有侧向凸包230，所述侧向凸包230沿所述稳焰装置200的长度方向间隔排布；其中，所述侧向凸包230包括内凸包232和至少两个外凸包231；所述内凸包232凸向所述腔体210，所述至少两个外凸包231凸向所述火排10外侧；所述内凸包232的设于所述至少两个外凸包231之间。
为了方便描述介绍，两个侧板分别命名为第一侧板和第二侧板进行介绍：
具体的，第一侧板和第二侧板相互扣合形成，并且沿其长度方向分别设有多个侧向凸包230，且多个侧向凸包230沿第一侧板或第二侧板的长度方向间隔排列。所述侧向凸包230包括内凸包232和至少两个外凸包231；所述内凸包232凸向所述腔体210，所述至少两个外凸包231的凸起方向与所述内凸包232的凸起方向相反；如此，内外凸包231的设计，首先可以方便稳焰装置200安装时的定位，其次使得稳焰装置200与所述腔体210的外壁之间形成了通风通道，外凸包231保证火排10间的二次进风通道。优选地，为了方便加工，以及多个火排10的同时使用的场景下，便于排布和安装，所述第一侧板的凸包与所述第二侧板的侧向凸包230在火排本体100的宽度方向上对称分布。
另外，所述第一侧板和所述第二侧板设有向上延伸的导焰部240；示例性地，所述导焰部240可以由所述第一侧板和所述第二侧板的顶边沿竖直方向向上外侧延伸形成。通过在所述第一侧板和所述第二侧板的顶边上设置导焰部240，可以对燃烧面板处形成火焰起到导向的作用，以使侧焰朝向火排10单体的中心区域聚拢，有利于提高燃烧过程中热量的集聚效果。
请参阅图8至图17，在另一较佳的实施例中，所述火排本体100的顶部130呈板状，所述火排本体100具有自所述顶部130向其同一侧延伸设置的两侧板140，两所述侧板之间形成所述通气通道110，为了进一步提升火焰的稳定性，所述侧板上有出气口150，以连通所述通气通道110和所述间隙212，本实施例通过出气口150的设置，在两侧增多混合气体的出气空间，以便减小混合气流的阻力，从而使得混合气流可以火排10的上方停留的时间稍微更长，从而进一步提高了燃气燃烧的燃烧率，进一步降低燃气燃烧后氮气的含量。
在上一实施例的基础上，为进一步减小混合气流的阻力，所述出气口150的数量为多个。与此同时，为了进一步降低加工工艺的难度，多个所述出气口150在所述侧板上沿所述所述火排本体顶部130的长度方向间隔排布。进一步地，请参阅图17，所述出气口150的过流面积自所述通气通道110向所述间隙212逐渐增大。也就是说，所述出气口150呈喇叭形状设计，更进一步地，所述出气口150所在的部位朝向所述通气通道110凸起，以进一步减小混合气流的阻力。
本申请还公开一种火排10的制造方法，也就是如何将前述火排10的制造出来的方法，示例性地，该火排10的制造方法包括以下步骤：
S10,准备金属板、金属网以及稳焰片201；
S20,对所述金属板整形而形成具有通气通道110和分流孔120的火排本体100，所述分流孔120位于所述火排本体100的顶部130，并与所述通气通道110连通；
S30,对所述稳焰片201201整形而形成具有顶面敞口211的腔体210的稳焰装置200；
S40,将所述金属网300对应所述分流孔120的位置固定在所述火排本体100上；或者，将所述金属网300对应所述分流孔120的位置固定在所述稳焰装置200上；
S50,将所述稳焰装置200套设在所述火排本体100的上部。
示例性地，在本实施例中，对所述金属板整形而形成具有通气通道110和分流孔120的火排本体100，其中的金属板是厚度比较薄的金属板，需要具备一定的刚度和耐高温的性质。然后按照预设的形状对铁板进行整形，使得铁板形成火排本体100的初步形态，最后对金属板的另外三边进行裁切等，然后将金属板的另外三边扣合形成具有通气通道110和分流孔120的火排本体100。在此，需要注意的是，金属网300可以是对应所述分流孔120的位置贴设于火排本体100的内部，也就是说，所述金属网300 其实位于通气通道110内。金属网300也可以是对应所述分流孔120的位置贴设于火排本体100的外表面，也就是说，所述金属网300位于稳焰装置200的顶部和所述火排本体100的顶部130之间，并且贴着所述火排本体100的顶部130设置。
在金属网300贴设在火排本体100内部的实施例中，将金属板的另外三边扣合形成具有通气通道110和分流孔120的火排本体100之前，需要先将金属网300先固定在火排本体100对应所述分流孔120的位置上。在金属网300贴设在火排本体100外部的实施例中，可以将金属网300直接固定在火排本体100对应所述分流孔120的位置，也可以是先将金属网300直接固定在稳焰装置200上，又或者是先将金属网300暂时预装在稳焰装置200或者是火排本体100上，将稳焰装置200套设在所述火排本体100的上部之后，在将金属网300与火排本体100或者稳焰装置200固定，也就是说，只需要最后确保金属网300贴设在所述对应所述分流孔120的位置贴设在所述火排本体100上即可。
另外，稳焰片201也是类似上述金属薄板的，稳焰装置200的其中一种制造方法通过对原始的稳焰片201进行整形，然后从两侧包裹火排本体100的上部，最后将两片稳焰进行扣合。或者，也可以是一块金属板，按照预设的形状进行冲压、折弯等工艺整形后形成具有顶面敞口211设置腔体210的稳焰装置200的初始形态，而后将其套在火排本体100的顶部130后，再进行扣合。值得一提的是，在其它实施例中，所述稳焰装置200于所述敞口210处设置有加强筋220，加强筋220通常与金属网300固定连接，或者是加强筋220通常与火排本体100的顶部130直接连接。
需要说明的是，上述的金属板一般选用的是薄铁板。上述金属网300与火排本体100的固定方式、金属网300与稳焰装置200的固定方式包括但不限于焊接，在此就不一一赘述。优选地，在焊接的方式中，优先选用点焊。
与传统的加工制造方法相比，本申请的制造方法只需要冲压、折弯裁切等工艺，减少了焊接加工方法的使用减少了加工工艺或者加工步骤，从而提升火排10的生产效率。
在上一实施例的基础上，所述对所述金属板整形而形成具有通气通道110和分流孔120的火排本体100，所述分流孔120位于所述火排本体100的顶部130，并与所述通气通道110连通的步骤包括：
S21，将所述金属板的两端向其同一侧折弯，以形成所述火排本体100的顶部130和自所述顶部130向其同一侧延伸设置的两侧板140；其中，在所述金属板折弯之前，于所述顶部130对应的位置冲裁出所述分流孔120，或者在所述金属板折弯之后，在所述顶部130冲裁出所述分流孔120；
S22，对两所述侧板进行冲压，以在两侧板140之间形成所述通气通道110。
其中，S21包含两种两种方案：
方案一：
S21a，将所述金属板的两端向其同一侧折弯，以形成所述火排本体100的顶部130和自所述顶部130向其同一侧延伸设置的两侧板140；
S21b，在所述金属板折弯之后，在所述顶部130冲裁出所述分流孔120。
方案二：
S21c，在所述金属板折弯之前，于所述顶部130对应的位置冲裁出所述分流孔120；
S21a，将所述金属板的两端向其同一侧折弯，以形成所述火排本体100的顶部130和自所述顶部130向其同一侧延伸设置的两侧板140。
示例性地，所述对所述金属板整形而形成具有通气通道110和分流孔120的火排本体100中，可以现在预定的位置先冲压出分流孔120，也可以先预留金属孔的位置，以预留的部位为中轴，将所述金属板的两端向其同一侧折弯，形成所述火排本体100的顶部130和自所述顶部130向其同一侧延伸设置的两侧板140。然后再根据通气通道110预设的形状和位置，对两所述侧板进行冲压，以使两侧板140扣合之后形成所述通气通道110。
在上一实施例的基础上，所述对两所述侧板进行冲压，以在两侧板140之间形成所述通气通道110的步骤包括：
按通气通道110预设的形状，于两所述侧板对应的位置进行冲压；
对两所述侧板其它三边的边缘裁剪后，将两侧板140扣合，并使得扣合后其中一个侧板的边缘包裹另一侧板的边缘。
示例性地，在上述根据通气通道110预设的形状和位置，对两所述侧板进行冲压之后，对两所述侧板其它三边的边缘进行裁剪，使得其中一个侧板的边缘包裹另一侧板的边缘，从而加强两侧边之间的紧密贴合，进而确保通气通道110的密封性。
在一实施例中，在所述对两所述侧板进行冲压，以在两侧板140之间形成所述通气通道110之前，还包括步骤：
于两所述侧板的预设位置开设出气口150；以使稳焰装置200套设于所述火排本体100上部之后， 所述通气通道110连通所述间隙212。
本申请还提出一种燃烧器，该燃烧器包括前述的火排10，该火排10的具体结构参照上述实施例，由于本燃烧器采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。其中，燃烧器可以为大气式燃烧器、浓淡燃烧器或水冷燃烧器等其他形式的燃烧器。
在一实施例中，如图7所示，火排10可以为并排设置的多个。其中，火排10包括扣合设置的两个侧板两个侧板分别设有侧向凸包230，侧向凸包230邻近侧板的顶部130设置，且侧向凸包230的顶部130敞口211形成稳焰孔。
在一实施例中，第一侧板和第二侧板邻近顶部130边沿处分别设有多个侧向凸包230，且多个侧向凸包230沿第一侧板或第二侧板的长度方向间隔排列。侧向凸包230的内侧限定出与通气通道110连通的流道，所述流道的顶部130敞口211形成稳焰孔。其中，第一侧板和第二侧板上的两排稳焰孔分别位于火排本体100的两侧，且两排稳焰孔在火排10的宽度方向上对称分布。在燃烧过程中，位于分火装置两侧的两排稳焰孔处所形成的侧焰，可以对分火装置上方形成的火焰起到稳定作用，从而进一步提高燃烧器燃烧过程中的火焰稳定性。
在一实施例中，导焰部240可以由侧向凸包230的顶边沿，向上且相对水平方向朝向外侧延伸形成。通过在侧向凸包230上设置导焰部240，可以对稳焰孔处形成的侧焰起到导向的作用，以使侧焰朝向火排10的中心区域聚拢，有利于提高燃烧过程中热量的集聚效果。
本申请还提出一种热水器，该热水器包括前述的燃烧器，该燃烧器包括前述的火排，该火排的具体结构参照上述实施例，由于本燃烧器采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
以上所述仅为本申请的可选实施例，并非因此限制本申请的专利范围，凡是在本申请的发明构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (20)

  1. 一种火排，其中，包括：
    火排本体，所述火排本体形成通气通道；所述火排本体的顶部设置有与所述通气通道连通的分流孔；
    稳焰装置，套设在所述火排本体的上部；所述稳焰装置内形成顶面呈敞口设置的腔体，所述腔体的侧壁与所述火排本体的表面之间形成有间隙，所述间隙与所述通气通道连通；以及
    金属网，对应所述分流孔的位置贴设于所述火排本体上。
  2. 如权利要求1所述的火排，其中，所述金属网的层数为多层。
  3. 如权利要求2所述的火排，其中，所述金属网位于所述分流孔的下方。
  4. 如权利要求2所述的火排，其中，所述分流孔包括多个第一分流孔和多个第二分流孔，所述第一分流孔的开孔面积大于所述第二分流孔的开孔面积。
  5. 如权利要求4所述的火排，其中，多个所述第一分流孔和多个所述第二分流孔沿所述火排本体顶部的长度方向间隔排布。
  6. 如权利要求5所述的火排，其中，多个所述第一分流孔和多个所述第二分流孔沿所述火排本体顶部的长度方向交替间隔排布。
  7. 如权利要求6所述的火排，其中，所述第二分流孔包括多个子分流孔，多个所述子分流孔沿所述火排本体顶部的宽度方向排布。
  8. 如权利要求2所述的火排，其中，所述稳焰装置于所述敞口处还设有加强筋，所述加强筋与所述金属网固定连接；或者，所述加强筋与所述火排本体的顶部固定连接。
  9. 如权利要求2所述的火排，其中，至少一层金属网的边缘弯折形成折弯部。
  10. 如权利要求1至9中任意一项所述的火排，其中，所述火排本体的顶部呈板状，所述火排本体具有自所述顶部向其同一侧延伸设置的两侧板，两所述侧板之间形成所述通气通道，所述侧板上有出气口，以连通所述通气通道和所述间隙。
  11. 如权利要求10所述的火排，其中，所述出气口的数量为多个，多个所述出气口在所述侧板上沿所述所述火排本体顶部的长度方向间隔排布。
  12. 如权利要求10所述的火排，其中，所述出气口处的过流面积自所述通气通道向所述间隙逐渐增大。
  13. 如权利要求10所述的火排，其中，所述稳焰装置包括相互扣合设置的两个稳焰片，两个所述稳焰片分别设有沿所述稳焰装置的长度方向间隔排布的侧向凸包。
  14. 如权利要求13所述的火排，其中，所述侧向凸包包括内凸包和至少两个外凸包；所述内凸包凸向所述腔体，所述至少两个外凸包凸向所述火排外侧；并且所述内凸包设于所述至少两个外凸包之间。
  15. 一种火排的制造方法，其中，包括以下步骤：
    准备金属板、金属网以及稳焰片；
    对所述金属板整形而形成具有通气通道和分流孔的火排本体，所述分流孔位于所述火排本体的顶部，并与所述通气通道连通；
    对所述稳焰片整形而形成具有顶面敞口的腔体的稳焰装置；
    将所述金属网对应所述分流孔的位置固定在所述火排本体上；或者，将所述金属网对应所述分流孔的位置固定在所述稳焰装置上；
    将所述稳焰装置套设在所述火排本体上部。
  16. 如权利要求15所述的火排制造方法，其中，所述对所述金属板整形而形成具有通气通道和分流孔的火排本体，所述分流孔位于所述火排本体的顶部，并与所述通气通道连通的步骤包括：
    将所述金属板的两端向其同一侧折弯，以形成所述火排本体的顶部和自所述顶部向其同一侧延伸设置的两侧板；其中，在所述金属板折弯之前，于所述顶部对应的位置冲裁出所述分流孔，或者在所述金属板折弯之后，在所述顶部冲裁出所述分流孔；
    对两所述侧板进行冲压，以在两侧板之间形成所述通气通道。
  17. 如权利要求16所述的火排制造方法，其中，所述对两所述侧板进行冲压，以在两侧板之间形成所述通气通道的步骤包括：
    按通气通道预设的形状，于两所述侧板对应的位置进行冲压；
    对两所述侧板其它三边的边缘裁剪后，将两侧板扣合，并使得扣合后其中一个侧板的边缘包裹另一侧板的边缘。
  18. 一种燃烧器，其中，所述燃烧器包括如权利要求1至14任意一项所述的火排。
  19. 如权利要求18所述的燃烧器，其中，所述火排的数量为多个，多个所述火排并列排布.
  20. 一种热水器，其中，包括如权利要求18或19所述的燃烧器。
PCT/CN2022/083165 2021-03-25 2022-03-25 火排及其制造方法、燃烧器和热水器 WO2022199700A1 (zh)

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