CN220379660U - Fire row, burner and water heater - Google Patents

Abstract

The utility model discloses a fire grate, a burner and a water heater, wherein the fire grate comprises a fire grate body, a metal net and a fire dividing piece, a ventilation channel is formed in the fire grate body, and an opening communicated with the ventilation channel is formed at the top of the fire grate body; the metal net is adhered to the fire grate body corresponding to the opening; the fire dividing piece comprises a fire dividing part fixed above the metal net, the fire dividing part is provided with a plurality of fire dividing ribs, the fire dividing ribs divide openings into a plurality of fire dividing holes, the fire dividing part comprises a main fire dividing section, the main fire dividing section is provided with a first fire dividing section and a second fire dividing section which are adjacent, the first fire dividing section is provided with a plurality of first fire dividing holes, the first fire dividing holes are arranged in long holes and extend along a first direction, the second fire dividing section is provided with a plurality of second fire dividing holes, the second fire dividing holes are arranged in long holes and extend along a second direction, and the first direction and the second direction are arranged at an included angle. The technical scheme of the utility model reduces the heat intensity of the fire grate in the combustion process and reduces the combustion noise generated in the combustion process.

Description

Fire row, burner and water heater

Technical Field

The utility model relates to the technical field of water heaters, in particular to a fire grate, a burner and a water heater.

Background

In gas water heater products, the burner is the core component. The existing water heater burner adopts full premix combustion technology, thick and thin combustion technology and water cooling combustion technology in the aspect of low nitrogen oxide combustion technology. In the prior art, the fire dividing part of the burner is usually provided with a plurality of thin strip-shaped fire holes, and the combustion intensity is too high due to the small area of the thin strip-shaped fire holes, so that the content of nitrogen oxides in the smoke is too high, and in the combustion process, the air flow is unstable, so that larger combustion noise is easily caused, and the structure of the fire dividing part is complex and the manufacturing cost is high.

Disclosure of Invention

The main purpose of the utility model is to propose a fire grate, which aims at reducing the heat intensity of the fire grate in the combustion process and reducing the combustion noise generated in the combustion process.

In order to achieve the above object, the present utility model provides a fire grate, comprising:

the fire grate comprises a fire grate body, wherein a ventilation channel is formed in the fire grate body, and an opening communicated with the ventilation channel is formed in the top of the fire grate body;

the metal net is adhered to the fire grate body corresponding to the opening; and

the fire dividing piece comprises a fire dividing part fixed above the metal net, the fire dividing part is provided with a plurality of fire dividing ribs, the fire dividing ribs divide the opening into a plurality of fire dividing holes, the fire dividing part comprises a main fire dividing section, the main fire dividing section is provided with a first fire dividing section and a second fire dividing section which are adjacent, the first fire dividing section is provided with a plurality of first fire dividing holes, the first fire dividing holes are long holes and extend along a first direction, the second fire dividing section is provided with a plurality of second fire dividing holes, the second fire dividing holes are long holes and extend along a second direction, and the first direction and the second direction are inclined angles.

Optionally, the main fire division section includes a plurality of the first fire division sections and the second fire division sections, and the first fire division sections and the second fire division sections are alternately arranged in the first direction.

Optionally, the first fire dividing area is provided with a plurality of first fire dividing holes, and the plurality of first fire dividing holes are arranged along the second direction; and/or the second fire division area is provided with a plurality of second fire division holes, and the second fire division holes are distributed along the first direction.

Optionally, the fire division part comprises two auxiliary fire division sections, two auxiliary fire division sections are respectively arranged at two opposite ends of the main fire division section in the first direction, the auxiliary fire division sections are provided with third fire division areas, the third fire division areas are provided with a plurality of third fire division holes, and the area of each third fire division hole is smaller than that of the first fire division hole or that of the second fire division hole.

Optionally, the third fire dividing area is provided with a plurality of third fire dividing holes, and the third fire dividing holes are distributed along the second direction.

Optionally, the fire dividing rib is provided with a plurality of first fixing positions, and the first fixing positions are fixed with the metal mesh in a welding mode.

Optionally, the first fixing position is provided with a reinforcing part, so that the first fixing position is wider than the rest positions of the fire dividing ribs.

Optionally, the first fixing position is arranged at the joint of the two fire dividing ribs arranged at an included angle.

Optionally, the lateral part of fire row body outwards evaginates and is equipped with the convex hull, divide the side of fire spare with the convex hull encloses to close and forms the intercommunication open steady flame hole.

Optionally, the periphery of fire dividing portion has the turn-ups that downwardly extending, the metal mesh paste is located fire dividing portion is towards one side of turn-ups, the turn-ups has the second fixed position, the interval is equipped with a plurality of convex hulls on the fire row body, adjacent two have the third fixed position between the convex hulls, the second fixed position with third fixed position welded fastening.

Optionally, the fire grate body includes a first side portion and a second side portion riveted to each other, and the first side portion and the second side portion enclose to form the ventilation channel.

The utility model also provides a combustor, which comprises a shell and a plurality of fire rows, wherein the shell is internally provided with a mounting groove, the fire rows are arranged in the mounting groove at intervals, and a first air inlet communicated with the ventilation channel is formed in the first side wall of the shell.

Optionally, the casing is followed two second lateral walls that the direction of arranging of fire row set up relatively, two the cooling air inlet has been seted up to two one of the second lateral wall, and another one has been seted up the cooling air outlet, the cooling air inlet with the cooling air outlet all communicates the mounting groove.

Optionally, a second air inlet communicated with the mounting groove is formed in the bottom wall of the shell.

The utility model also provides a water heater comprising the burner.

According to the technical scheme, the ventilation channel is formed in the fire grate body, and the top of the fire grate body is provided with the opening communicated with the ventilation channel; the metal net is adhered to the fire grate body corresponding to the opening; therefore, a plurality of strip fire holes in the prior art are abandoned, and an opening is directly arranged above the ventilation channel, so that the combustion area of the fire holes is greatly increased. The area of the original fire hole is increased, so that the smoke performance of the instant combustion emission of the fire bar is better, the generation of nitrogen oxides can be reduced, meanwhile, the main structure of the fire hole made of the metal net has the function of stabilizing flame, the combustion intensity combustion application range of the fire bar single piece can be improved, the segmentation is reduced, the structure is simple, the manufacture is convenient, the cost is low, and the use requirement of the whole machine on low nitrogen emission can be met.

The fire grate body is further fixedly provided with a fire dividing part, the fire dividing part comprises a fire dividing part fixed above the metal net, the fire dividing part is provided with a plurality of fire dividing ribs, the fire dividing ribs divide an opening into a plurality of fire dividing holes, so that the metal net is divided into a plurality of combustion units, the fire dividing part comprises a main fire dividing section, the main fire dividing section is provided with a first fire dividing area and a second fire dividing area which are adjacent, the first fire dividing area is provided with a plurality of first fire dividing holes, the first fire dividing holes are long holes and extend along a first direction, the second fire dividing area is provided with a plurality of second fire dividing holes, the second fire dividing holes are long holes and extend along a second direction, and the first direction and the second direction are in included angle setting. That is, the extending direction of the first fire dividing hole and the extending direction of the second fire dividing hole are arranged at an included angle, and the first fire dividing hole and the second fire dividing hole are long holes, so that the length of the first fire dividing hole in the first direction is larger than the width of the second fire dividing hole, the width of the first fire dividing hole in the second direction is smaller than the length of the second fire dividing hole, the adjustment of flame in the first fire dividing area and the flame in the second fire dividing area which are adjacently arranged is different, when one of the flames in the first fire dividing hole and the flame in the second fire dividing hole reaches the boundary condition of flame separation and flame separation, the other flame can give out a traction force to the other flame, the possibility of flame separation and flame separation phenomenon is reduced, the flame stability of the flame separation is further improved, the adaptation range of the flame separation is wider, the stability of the flame in the combustion process is improved, the combustion noise generated in the combustion process is reduced, and the problem of overlarge noise caused by poor combustion stability is solved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an angle structure of an embodiment of a fire grate of the present utility model;

FIG. 2 is a schematic view of another angular configuration of the fire grate of FIG. 1;

FIG. 3 is a schematic view of another angular structure of the fire grate of FIG. 1;

FIG. 4 is a schematic view of an angle mounting structure of the fire splitting sheet and the metal mesh in the fire row of FIG. 1;

FIG. 5 is a schematic view of another angular mounting structure of the fire splitting sheet and the metal mesh in the fire row of FIG. 4;

FIG. 6 is a schematic view of an installation structure of a fire splitting sheet and a metal mesh in another embodiment of the fire grate of the present utility model;

FIG. 7 is a schematic view of an angle structure of an embodiment of the burner of the present utility model;

FIG. 8 is a schematic view of another angular configuration of the burner of FIG. 7;

FIG. 9 is a schematic view of a further angular configuration of the burner of FIG. 7.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a fire grate 100, which is mainly used on a burner 200, wherein the fire grate 100 is one of core components of the burner 200, and the burner 200 of a water heater plays a key role in the aspect of low-nitrogen oxide combustion technology of the fire grate 100.

In the embodiment of the present utility model, as shown in fig. 1 to 6, the fire grate 100 includes a fire grate body 110, a metal mesh 120 and a fire dividing member 130, a ventilation channel 111 is formed in the fire grate body 110, and an opening 112 communicating with the ventilation channel 111 is formed at the top of the fire grate body 110; the metal net 120 is adhered to the fire grate body 110 corresponding to the opening 112; the fire dividing member 130 includes a fire dividing portion 140 fixed above the metal mesh 120, the fire dividing portion 140 has a plurality of fire dividing ribs 141, the fire dividing ribs 141 divide the opening 112 into a plurality of fire dividing holes 142, the fire dividing portion 140 includes a main fire dividing section 150, the main fire dividing section 150 has adjacent first fire dividing sections 151 and second fire dividing sections 152, the first fire dividing sections 151 are provided with a plurality of first fire dividing holes 153, the first fire dividing holes 153 are long holes and extend along a first direction, the second fire dividing sections 152 are provided with a plurality of second fire dividing holes 154, the second fire dividing holes 154 are long holes and extend along a second direction, and the first direction and the second direction form an included angle.

Specifically, the ventilation channel 111 is formed in the fire grate body 110, the ventilation channel 111 has an air inlet 113, the air inlet 113 is usually communicated with an air flow source, the air flow source includes air and fuel gas, the fuel gas and the air enter the ventilation channel 111 from the air inlet 113, the fuel gas and the air are premixed in the ventilation channel 111, and after being fully mixed and split by the metal mesh 120, the fuel gas and the air are finally ignited at the top of the fire grate 100, and then a stable and uniform flame is formed.

In the prior art, the fire dividing part 140 of the burner 200 is generally configured as a plurality of fine strip fire holes, and the fine strip fire holes have smaller area, so that the fire holes have high heat intensity during combustion, so that the burner 200 is high in temperature during operation, incomplete combustion is easy to cause, the performance of flue gas discharged by instantaneous combustion is poor, the content of nitrogen oxides in the flue gas is high, and the national discharge requirement may be exceeded. In order to reduce the content of nitrogen oxides in the flue gas and achieve low emission of the nitrogen oxides, the combustion intensity at the fire hole needs to be reduced, so that the contact area between the flame and air during instantaneous combustion needs to be increased, and the combustion area of the fire hole needs to be increased. Therefore, in the scheme, a plurality of strip fire holes in the prior art are abandoned, and the opening 112 is directly arranged above the ventilation channel 111, so that the combustion area of the fire holes is greatly increased. The area of the original fire hole is increased, so that the smoke performance of the fire grate 100, which is instantaneously burnt and discharged, is better, and the generation of nitrogen oxides can be reduced. Meanwhile, the main structure of the fire hole made of the metal net 120 has the function of flame stabilization, so that the combustion application range of the combustion intensity of the single fire grate 100 can be improved, the number of sections is reduced, the structure is simple, the manufacturing is convenient, the cost is low, and the use requirement of low nitrogen emission of the whole machine can be met.

However, in order to avoid backfire, a metal mesh 120 is attached to the fire grate body 110, and the metal mesh 120 is disposed corresponding to the diversion holes, considering that the opening area of the opening 112 is too large. Further, in consideration of the large open area of the metal mesh 120, the metal mesh 120 may be provided in a plurality of layers in order to prevent explosion accidents due to tempering or to prevent flame off due to too small fire resistance generated by the metal mesh 120. The number of layers of the metal mesh 120 is set to be related to the mesh number of the metal mesh 120, and the number of layers of the mesh in the metal mesh 120 is inversely related to the mesh number, that is, the metal mesh 120 with a large mesh number has a small number of corresponding layers, and the number of corresponding layers with a small mesh number is large, for example, the number of layers of the metal mesh 120 includes, but is not limited to, 2-10 layers, specifically may be 2 layers, 3 layers, 5 layers, 8 layers or 10 layers. To reduce the occurrence of excessive resistance or the like in the multi-layered metal net 120, at least two layers of the multi-layered metal net 120 are connected to each other by bending. That is, the multi-layer metal mesh 120 may be formed by sequentially bending a metal mesh 120 having a larger area. So that a certain gap exists between the multi-layer metal net 120, the resistance is increased due to no complete blocking, the multi-layer metal net can be shielded, the air flow is prevented from directly blowing through the fire dividing holes 142, and the fire is easy to escape.

And still be fixed with on fire row body 110 and divide fire piece 130, this divide fire piece 130 to be fixed in the branch fire portion 140 of metal mesh 120 top, divide fire portion 140 to have a plurality of fire bars 141, divide fire bar 141 to cut apart the uncovered 112 and form a plurality of fire holes 142, thereby divide metal mesh 120 into a plurality of combustion units with the metal mesh, divide fire portion 140 to include main branch fire section 150, main branch fire section 150 has adjacent first branch fire section 151 and second branch fire section 152, first branch fire section 151 is equipped with a plurality of first fire holes 153, first branch fire hole 153 is the slot hole setting and extends along first direction, second branch fire section 152 is equipped with a plurality of second fire holes 154, second branch fire holes 154 is the slot hole setting and extends along the second direction, and first direction is the contained angle setting with the second direction. Referring to fig. 2, 4 and 6, since the opening 112 of the fire grate body 110 is generally an elongated opening, the first direction is defined as the length direction X of the opening 112, the second direction is defined as the width direction Y of the opening 112, that is, the extending direction of the first flame dividing hole 153 (extending along the length direction of the opening 112) and the extending direction of the second flame dividing hole 154 (extending along the width direction of the opening 112) are disposed at an angle, and the first flame dividing hole 153 and the second flame dividing hole 154 are elongated holes, so that the length of the first flame dividing hole 153 in the first direction is greater than the width of the second flame dividing hole 154, the width of the first flame dividing hole 153 in the second direction is smaller than the length of the second flame dividing hole 154, so that the boundary conditions of flame separation flame release in the adjacent first flame dividing region 151 and the second flame dividing region 152 are different, and when one of the flames in the first flame dividing hole 153 and the second flame dividing hole 154 reaches the boundary regulating member of flame release, the other flame separation flame can be given to the other flame separation region 100, thereby further reducing the flame separation flame release probability and further adapting to the flame discharge range 100.

Wherein, the metal mesh 120 is adhered to the fire grate body 110 corresponding to the opening 112; the metal mesh 120 may be attached to the inside of the fire grate body 110 at a position corresponding to the opening 112, that is, the metal mesh 120 is actually located in the ventilation channel 111. The metal mesh 120 may also be attached to the outer surface of the fire grate body 110 at a position corresponding to the opening 112.

According to the technical scheme, the ventilation channel 111 is formed in the fire grate body 110, and the top of the fire grate body 110 is provided with the opening 112 communicated with the ventilation channel 111; the metal net 120 is adhered to the fire grate body 110 corresponding to the opening 112; thus, a plurality of thin strip fire holes in the prior art are abandoned, and the opening 112 is directly arranged above the ventilation channel 111, so that the combustion area of the fire holes is greatly increased. The area of the original fire hole is increased, so that the smoke performance of the fire bar 100 for instantaneous combustion emission is better, the generation of nitrogen oxides can be reduced, meanwhile, the main structure of the metal net 120 as the fire hole has a flame stabilizing effect, the combustion intensity combustion application range of the single fire bar 100 can be improved, the number of sections is reduced, the structure is simple, the manufacture is convenient, the cost is low, and the use requirement of the whole machine for low nitrogen emission can be met.

The fire grate body 110 is further fixed with a fire dividing member 130, the fire dividing member 130 comprises a fire dividing portion 140 fixed above the metal net 120, the fire dividing portion 140 is provided with a plurality of fire dividing ribs 141, the fire dividing ribs 141 divide the opening 112 into a plurality of fire dividing holes 142 so as to divide the metal net 120 into a plurality of combustion units, the fire dividing portion 140 comprises a main fire dividing section 150, the main fire dividing section 150 is provided with a first adjacent fire dividing section 151 and a second adjacent fire dividing section 152, the first fire dividing section 151 is provided with a plurality of first fire dividing holes 153, the first fire dividing holes 153 are long holes and extend along a first direction, the second fire dividing section 152 is provided with a plurality of second fire dividing holes 154, the second fire dividing holes 154 are long holes and extend along a second direction, and the first direction and the second direction form an included angle. That is, the extending direction of the first fire dividing hole 153 and the extending direction of the second fire dividing hole 154 are arranged at an included angle, and the first fire dividing hole 153 and the second fire dividing hole 154 are long holes, so that the length of the first fire dividing hole 153 in the first direction is larger than the width of the second fire dividing hole 154, and the width of the first fire dividing hole 153 in the second direction is smaller than the length of the second fire dividing hole 154, so that the boundary conditions of flame separation and flame removal in the first fire dividing area 151 and the second fire dividing area 152 which are adjacently arranged are different, and when one of the flames in the first fire dividing hole 153 and the second fire dividing hole 154 reaches the boundary condition of flame separation and flame removal, the other flame can give one part of traction force to the other flame, thereby reducing the possibility of flame separation and flame removal phenomenon, further improving the flame stability of the flame holder 100, leading to wider application range of the flame holder 100, improving the stability of the flame in the combustion process, reducing the combustion noise generated in the combustion process, and solving the problem of overlarge noise caused by poor combustion stability.

Further, the main fire section 150 includes a plurality of first and second fire dividing sections 151 and 152, and the first and second fire dividing sections 151 and 152 are alternately arranged in the first direction. Specifically, because the boundary conditions of flame separation and flame release in the first flame dividing area 151 and the second flame dividing area 152 which are adjacently arranged are different, when one of the flames in the first flame dividing hole 153 and the second flame dividing hole 154 reaches the boundary conditions of flame separation and flame release, the other flame can give a traction force to the flame, and the plurality of first flame dividing areas 151 and the plurality of second flame dividing areas 152 are alternately arranged, so that the first flame dividing areas 151 and the second flame dividing areas 152 alternately draw to further improve the flame stability of the flame row 100, the application range of the flame row 100 is wider, the stability of the flame in the combustion process is improved, the combustion noise generated in the combustion process is reduced, and the problem of overlarge noise caused by poor combustion stability is solved.

Further, the first fire dividing area 151 is provided with a plurality of first fire dividing holes 153, and the plurality of first fire dividing holes 153 are arranged along the second direction. Specifically, the first fire dividing area 151 is divided into a plurality of first fire dividing holes 153 through the fire dividing ribs 141, so that the contact area between the flame and the air in the combustion process is further increased, the boundary condition of the flame from the flame to release the fire is further increased, the flame stability of the fire grate 100 is further improved, the application range of the fire grate 100 is wider, the stability of the flame in the combustion process is improved, the combustion noise is reduced in the combustion process, and the problem of overlarge noise caused by poor combustion stability is solved. Because the first fire dividing holes 153 are long holes, the plurality of first fire dividing holes 153 are arranged along the second direction, thereby ensuring the arrangement rate of the first fire dividing holes 153 in the first fire dividing area 151 and increasing the contact area between the flame and the air in the combustion process as much as possible.

In another embodiment, the second flame-dividing region 152 is provided with a plurality of second flame-dividing holes 154, and the plurality of second flame-dividing holes 154 are arranged along the first direction. Specifically, the second fire dividing area 152 is divided into a plurality of second fire dividing holes 154 through the fire dividing ribs 141, so that the contact area between the flame and the air in the combustion process is further increased, the boundary condition of the flame from the flame to release the fire is further increased, the flame stability of the fire grate 100 is further improved, the application range of the fire grate 100 is wider, the stability of the flame in the combustion process is improved, the combustion noise generated in the combustion process is reduced, and the problem of overlarge noise caused by poor combustion stability is solved. Because the second fire dividing holes 154 are long holes, the plurality of second fire dividing holes 154 are arranged along the first direction, thereby ensuring the arrangement rate of the second fire dividing holes 154 in the second fire dividing region 152 and increasing the contact area between the flame and the air in the combustion process as much as possible.

Optionally, the fire division part 140 includes two auxiliary fire division sections 160, the two auxiliary fire division sections 160 are separately disposed at opposite ends of the main fire division section 150 in the first direction, the auxiliary fire division section 160 has a third fire division section 161, the third fire division section 161 is provided with a plurality of third fire division holes 162, and the area of the third fire division holes 162 is smaller than the area of the first fire division holes 153 or the area of the second fire division holes 154. Specifically, since the shape of the opening 112 is a long opening, the ventilation channel 111 is communicated with the opening 112, and the flames at the opposite ends of the opening 112 are more unstable due to the structural limitation of the ventilation channel 111, two auxiliary fire-dividing sections 160 are provided, the two auxiliary fire-dividing sections 160 are respectively provided at the opposite ends of the main fire-dividing section 150 in the first direction, the auxiliary fire-dividing section 160 has a third fire-dividing area 161, the third fire-dividing area 161 is provided with a plurality of third fire-dividing holes 162, and the area of the third fire-dividing holes 162 is smaller than the area of the first fire-dividing holes 153 or the area of the second fire-dividing holes 154, so that the contact area of the flames and the air in the combustion process is further increased, the flame-off boundary condition of the flames is further increased, the flame stability of the fire-dividing section 100 is further improved, the adaptation range of the fire-dividing section 100 is wider, the stability of the flames in the combustion process is improved, the combustion noise generated in the combustion process is reduced, and the problem of overlarge noise caused by poor combustion stability is solved.

Preferably, the third flame dividing region 161 is provided with a plurality of third flame dividing holes 162, and the plurality of third flame dividing holes 162 are arranged in the second direction.

In order to ensure the fixing strength of the fire dividing member 130 and the metal mesh 120, in one embodiment, the fire dividing rib 141 has a plurality of first fixing bits 143, and the first fixing bits 143 are welded and fixed with the metal mesh 120. Specifically, the first fixing bits 143 are welded to the metal mesh 120, so as to ensure the fixing strength of the fire distributing member 130 and the metal mesh 120, and the first fixing bits 143 are welded to the metal mesh 120 by spot welding, so that the welding stability can be ensured, and the space occupied by the fire distributing holes 142 can be reduced. Referring to fig. 2 and 4, in this embodiment, the fire dividing part 140 has 14 first fixing bits 143 thereon. Referring to fig. 6, in this embodiment, the fire dividing part 140 has 9 first fixing bits 143 thereon.

Further, the first fixing portion 143 is provided with a reinforcing portion 144 so that the first fixing portion 143 is wider than the remaining positions of the flame dividing rib 141. Specifically, the reinforcing portion 144 is disposed on the first fixing location 143, so that the strength of the fire dividing rib 141 can be increased, the possibility that the fire dividing rib 141 breaks at the first fixing location 143 is reduced, the supporting strength of the fire dividing member 130 on the installation of the metal net 120 can be increased, and the structural stability of the installation of the fire dividing member and the metal net is ensured. Preferably, the first fixing location 143 is wider than the rest of the fire dividing rib 141, i.e., the installation strength of the fire dividing rib 141 at the first fixing location 143 is increased, thereby simplifying the installation of the fire dividing rib 141.

Further, the first fixing portion 143 is disposed at a junction of the two fire dividing ribs 141 disposed at an included angle. Because of being two fire-dividing ribs 141 that the contained angle set up, because of the extending direction of two fire-dividing ribs 141 is different, so in the corner position department of two fire-dividing ribs 141, for the weak department of intensity of fire-dividing rib 141, so set up first fixed bit 143 here, and set up reinforcing part 144 for first fixed bit 143 is wider than the rest position of fire-dividing rib 141, thereby makes the bulk strength of whole fire-dividing part 140 more even.

And in order to further increase the contact area between the flame and the air in the flame dividing holes 142, in one embodiment, the periphery of the flame dividing holes 142 has a protrusion 145 protruding inwards. Thereby increasing the contact area of the flame and air in each flame dividing hole 142, thereby increasing the full contact of the combustion flame and air, further improving the stability of the flame during instantaneous combustion, and reducing the generation of nitrogen oxides. Meanwhile, the convex part 145 can further pull the flame in the fire dividing hole 142 to play a role of stabilizing the flame, so that the combustion intensity combustion adaptation range of the single flame row 100 is improved, the structure is simple, the manufacturing is convenient, the cost is low, and the use requirement of low nitrogen emission of the whole machine can be met.

In order to further improve the combustion stability of the combustion flame at the opening 112, in this embodiment, the side portion of the fire grate body 110 is provided with a convex hull 114 outwards in a convex manner, and the side edge of the fire dividing member 130 and the convex hull 114 enclose to form a flame stabilizing hole 115 communicating with the opening 112. Specifically, the side of the fire grate body 110 is provided with a convex hull 114 protruding outwards, i.e. the side of the flame body protrudes outwards locally, so as to increase the width of the opening 112, so that the side of the fire distributor 130 and the convex hull 114 enclose to form a flame stabilizing hole 115 communicated with the opening 112, thereby increasing the full contact between the combustion flame and air, further improving the stability of the flame during instantaneous combustion, and further reducing the generation of nitrogen oxides. Meanwhile, the flame stabilizing hole 115 can further play a role in stabilizing flame, improves the combustion intensity combustion application range of the single flame row 100, has a simple structure, is convenient to manufacture and low in cost, and can meet the use requirement of low nitrogen emission of the whole machine. And the opposite ends of the fire grate body 110 are blocked due to the effect of the structure of the fire grate body 110 and the opening distance of the convex hulls 114 is short, so that the conduction of the flame stabilizing holes 115 at the opposite ends of the fire grate body 110 is not facilitated due to the effect of the structure of the flanges 170 of the fire dividing members 130, and the flanges 170 are correspondingly provided with the communication holes 172, so that the communication holes 172 are communicated with the ventilation channels 111 and the flame stabilizing holes 115, and the conduction of the flame stabilizing holes 115 is ensured.

In an embodiment, the periphery of the fire dividing part 140 has a downward extending flange 170, the metal mesh 120 is attached to one side of the fire dividing part 140 facing the flange 170, the flange 170 has a second fixing position 171, the fire row body 110 is provided with a plurality of convex hulls 114 at intervals, a third fixing position 116 is arranged between two adjacent convex hulls 114, and the second fixing position 171 is welded and fixed with the third fixing position 116. Specifically, for convenience in processing and in a scenario where a plurality of fire bars 100 are used simultaneously, the convex hulls 114 of the first side 117 and the convex hulls 114 of the second side 118 are symmetrically distributed in the width direction of the fire bar body 110. The fire-dividing member 130 is U-shaped, so that the fire-dividing member 130 includes a fire-dividing portion 140 attached to the metal mesh 120, and a flange 170 extending downward from the periphery of the fire-dividing portion 140, and the metal mesh 120 is disposed in a space formed by the fire-dividing portion 140 and the flange 170. The flange 170 is mainly used for being welded and fixed with the fire grate body 110, so the flange 170 is provided with a second fixing position 171, a plurality of convex hulls 114 are arranged on the fire grate body 110 at intervals, a third fixing position 116 is arranged between two adjacent convex hulls 114, and the second fixing position 171 is welded and fixed with the third fixing position 116. Thereby completing the co-fixation of the wire mesh 120 and the flame dividing member 130.

In one embodiment, the fire grate body 110 includes a first side 117 and a second side 118 riveted to each other, and the first side 117 and the second side 118 enclose the ventilation channel 111. Specifically, the first side portion 117 and the second side portion 118 are formed by mutually fastening and riveting, and a plurality of convex hulls 114 are respectively provided along the first direction, and the plurality of convex hulls 114 are arranged at intervals along the length direction of the first side portion 117 or the second side portion 118. And the first side portion 117 and the second side portion 118 are punched to form the ventilation channel 111 and the convex hull 114, so as to facilitate the processing of the fire grate body 110.

The present utility model also proposes a burner 200, where the burner 200 includes a housing 210 and a fire grate 100, and the specific structure of the fire grate 100 refers to the foregoing embodiments, and since the burner 200 adopts all the technical solutions of all the foregoing embodiments, at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described herein in detail. Referring to fig. 7 to 9, a mounting groove 211 is formed in the housing 210, a plurality of fire rows 100 are arranged in the mounting groove 211 at intervals, and a first air inlet 213 communicating with the air inlet channel is formed in a first side wall 212 of the housing 210. Specifically, the plurality of fire rows 100 are arranged in the mounting groove 211 at intervals, so that a gap is formed between two adjacent fire rows 100, thereby further increasing the sufficient contact between the flame and the air in the opening 112, further improving the stability of the flame during instantaneous combustion, and further reducing the generation of nitrogen oxides. Meanwhile, the flame stabilizing effect can be further achieved, the combustion adaptation range of the combustion intensity of the fire grate 100 single sheets is improved, the structure is simple, the manufacturing is convenient, the cost is low, and the use requirement of low nitrogen emission of the whole machine can be met. The first side wall 212 of the housing 210 is provided with a first air inlet 213 communicated with the air inlet channel, that is, the first air inlet 213 is communicated with the air inlet 113, the first air inlet 213 is used for introducing an air flow source, the air flow source comprises air and fuel gas, so that the fuel gas and the air enter the air inlet channel 111 from the air inlet 113, the fuel gas and the air are premixed in the air inlet channel 111, and after being fully mixed and split by the metal mesh 120, the fuel gas and the air are finally ignited at the top of the fire grate 100, and then stable and uniform flame is formed.

Further, a bottom wall 216 of the housing 210 is provided with a second air inlet 217 communicating with the mounting groove 211. That is, secondary air is introduced from the second air inlet 217 from the bottom wall 216 of the burner 200, thereby increasing the flow rate of air between the adjacent two fire rows 100, thereby further increasing the sufficient contact between the flame and air in the opening 112, further improving the stability of the flame during instantaneous combustion, and thus reducing the generation of nitrogen oxides. Meanwhile, the flame stabilizing effect can be further achieved, and the combustion intensity combustion adaptation range of the fire grate 100 single-chip is improved.

In an embodiment, the housing 210 includes two second side walls 214 disposed opposite to each other along the arrangement direction of the fire row 100, one of the two second side walls 214 is provided with a cooling air inlet 215, and the other one is provided with a cooling air outlet, and the cooling air inlet and the cooling air outlet are both communicated with the mounting groove 211. In order to reduce the possibility of higher surface temperature of the shell 210 caused by the combustion of the fire grate 100, one of the two second side walls 214 is provided with a cooling air inlet 215, and the other one is provided with a cooling air outlet, so that cooling air enters the mounting groove 211 from the cooling air inlet 215 and flows out from the cooling air outlet, thereby driving the heat on the surface of the fire grate body 110, and not only cooling the surface of the shell 210, but also cooling the fire grate body 110. In another embodiment, only the cooling air inlet 215 may be formed in one of the two second side walls 214, and the cooling air may enter the installation groove 211 through the cooling air inlet 215 and then flow out from the gap between the two adjacent fire rows 100.

The utility model also provides a water heater, which comprises a burner 200, wherein the specific structure of the burner 200 refers to the above embodiment, and because the water heater adopts all the technical schemes of all the above embodiments, the water heater at least has all the beneficial effects brought by the technical schemes of the above embodiments, and the description is omitted herein.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (15)

1. A fire grate, comprising:

the fire grate comprises a fire grate body, wherein a ventilation channel is formed in the fire grate body, and an opening communicated with the ventilation channel is formed in the top of the fire grate body;

the metal net is adhered to the fire grate body corresponding to the opening; and

the fire dividing piece comprises a fire dividing part fixed above the metal net, the fire dividing part is provided with a plurality of fire dividing ribs, the fire dividing ribs divide the opening into a plurality of fire dividing holes, the fire dividing part comprises a main fire dividing section, the main fire dividing section is provided with a first fire dividing section and a second fire dividing section which are adjacent, the first fire dividing section is provided with a plurality of first fire dividing holes, the first fire dividing holes are long holes and extend along a first direction, the second fire dividing section is provided with a plurality of second fire dividing holes, the second fire dividing holes are long holes and extend along a second direction, and the first direction and the second direction are inclined angles.

2. The fire grate of claim 1 wherein said main fire section includes a plurality of said first and second fire dividing sections, and wherein said first and second fire dividing sections alternate in said first direction.

3. The fire grate of claim 1 wherein said first fire dividing section is provided with a plurality of said first fire dividing holes, and wherein a plurality of said first fire dividing holes are arranged in said second direction; and/or the second fire division area is provided with a plurality of second fire division holes, and the second fire division holes are distributed along the first direction.

4. The fire grate of claim 1, wherein the fire dividing part comprises two auxiliary fire dividing sections, the two auxiliary fire dividing sections are respectively arranged at two opposite ends of the main fire dividing section in the first direction, the auxiliary fire dividing section is provided with a third fire dividing area, the third fire dividing area is provided with a plurality of third fire dividing holes, and the area of the third fire dividing holes is smaller than that of the first fire dividing holes or that of the second fire dividing holes.

5. The fire grate of claim 4 wherein said third fire division section is provided with a plurality of said third fire division holes, and wherein a plurality of said third fire division holes are arranged in said second direction.

6. A fire grate as claimed in claim 1 wherein said fire dividing rib has a plurality of first securing locations thereon, said first securing locations being secured to said metal mesh by welding.

7. A fire grate as claimed in claim 6 wherein said first securing location is provided with a reinforcement such that said first securing location is wider than the remainder of said fire dividing rib.

8. A fire grate as claimed in claim 6 wherein said first fixed location is at the junction of two said fire dividing ribs arranged at an included angle.

9. The fire grate of claim 1, wherein the side of the fire grate body is provided with a convex hull in an outward convex manner, and the side of the fire dividing piece and the convex hull are surrounded to form a flame stabilizing hole communicated with the opening.

10. The fire grate of claim 9, wherein the periphery of the fire dividing part is provided with a downward extending flanging, the metal net is attached to one side of the fire dividing part facing the flanging, the flanging is provided with a second fixing position, the fire grate body is provided with a plurality of convex hulls at intervals, a third fixing position is arranged between two adjacent convex hulls, and the second fixing position and the third fixing position are fixed in a welding mode.

11. A fire grate as claimed in any one of claims 1 to 10 wherein the grate body includes first and second sides riveted to each other, the first and second sides circumscribing the ventilation channel.

12. A burner comprising a housing and a plurality of fire bars according to any one of claims 1 to 11, wherein a mounting groove is formed in the housing, a plurality of fire bars are arranged in the mounting groove at intervals, and a first air inlet communicated with the ventilation channel is formed in a first side wall of the housing.

13. The burner of claim 12, wherein the housing has two second side walls disposed opposite to each other in the direction of arrangement of the fire rows, one of the two second side walls having a cooling air inlet and the other having the cooling air outlet, the cooling air inlet and the cooling air outlet both communicating with the mounting groove.

14. The burner of claim 12, wherein the bottom wall of the housing defines a second air inlet opening in communication with the mounting slot.

15. A water heater comprising a burner as claimed in any one of claims 12 to 14.