Burner fire row component, burner having the same, and heating device

Abstract

The present invention discloses a burner fire row assembly, a burner, and a heating device having the same, including: a fire row and a fire hole cap. A fire hole is formed at the top of the fire row. The fire hole cap is sleeved on the top of the fire row and covers the fire hole. A plurality of secondary fire holes are provided on the upper surface of the fire hole cap, and the plurality of secondary fire holes are all communicated with the fire hole. An air inlet gap is formed between the side wall of the fire hole cap or between the inner peripheral wall of the fire hole cap and the outer peripheral wall of the fire row, and a part of the plurality of secondary fire holes is communicated with the air inlet gap. According to the fire row assembly of the burner of the embodiment of the present invention, by reducing the highest combustion temperature of the fire row and reasonably organizing the combustion air flow, the nitrogen oxides generated by the thermal type temperature during the combustion process can be effectively reduced, so that the content of nitrogen oxides emitted during the combustion of the atmospheric burner meets the relevant regulations, conforms to the national emission reduction and environmental protection policies, and is beneficial to expanding the applicability range of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of burners, and in particular to a burner fire row assembly, a burner having the same, and a heating device. Background Art

[0002] The burners in the related art are roughly divided into four types: atmospheric burners, rich-lean burners, water-cooled coil burners, and fully premixed burners. Among them, for the latter three types of burners, according to the standard requirements and test methods of GB25034-2010 "Gas-fired Heating and Hot Water Boilers", the nitrogen oxide content after gas combustion can reach the 5th level standard requirement. However, their processes are complex and the costs are high. While for the atmospheric burner, the nitrogen oxide content after gas combustion can only reach the 3rd level standard requirement, which does not meet the relevant limit requirements. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, an object of the present invention is to provide a burner fire row assembly, which is applicable to an atmospheric burner and can reduce the emission of nitrogen oxides during gas combustion.

[0005] The present invention also provides a burner having the above-mentioned fire row assembly.

[0006] The present invention also provides a heating device having the above-mentioned burner.

[0007] The burner fire row assembly according to the first aspect embodiment of the present invention includes: a fire row and a fire hole cap. A fire hole is formed at the top of the fire row. The fire hole cap is sleeved on the top of the fire row and covers the fire hole. A plurality of secondary fire holes are provided on the upper surface of the fire hole cap, and all the plurality of secondary fire holes communicate with the fire hole. An air inlet gap is formed between the side wall of the fire hole cap or between the inner peripheral wall of the fire hole cap and the outer peripheral wall of the fire row, and some of the plurality of secondary fire holes communicate with the air inlet gap.

[0008] According to the burner fire row assembly of the embodiment of the present invention, by reducing the highest combustion temperature of the fire row and reasonably organizing the combustion air flow, the nitrogen oxides generated by the thermal type temperature during the combustion process can be effectively reduced, so that the nitrogen oxide content emitted during the combustion of the atmospheric burner meets the relevant regulations, conforms to the national emission reduction and environmental protection policy, and is beneficial to expanding the applicability range of the product.

[0009] According to an embodiment of the present invention, a plurality of gas channels are defined in the flame hole cap, and the plurality of secondary flame holes communicate with the plurality of gas channels one by one. One end of each gas channel away from the secondary flame hole communicates with the flame hole, and some of the plurality of gas channels communicate with the air inlet gap.

[0010] According to an embodiment of the present invention, the flame hole cap includes: a top plate, two side plates and at least one partition plate. The top plate extends along the length direction of the upper surface of the burner row, and the secondary flame holes are provided on the top plate. The two side plates are respectively connected to both sides of the top plate and both extend along the length direction of the top plate. The partition plate is located between the two side plates, and the upper edge of the partition plate is connected to the lower surface of the top plate. The partition plate extends along the length direction of the top plate, and the lower surface of the partition plate abuts against the top of the burner row. The gas channels are defined between adjacent partition plates or between the partition plate and the side plates.

[0011] According to an embodiment of the present invention, the upper surface of the top plate is formed as a stepped surface in the width direction, and the plurality of secondary flame holes are arranged at intervals along the length direction of the stepped surface.

[0012] According to an embodiment of the present invention, the middle part of the top plate in the width direction is higher than the two end parts of the top plate in the width direction; or, the middle part of the top plate in the width direction is lower than the two end parts of the top plate in the width direction.

[0013] According to an embodiment of the present invention, the burner row abuts between the two side plates, and the air inlet gap is provided on the side plates.

[0014] According to an embodiment of the present invention, an air inlet portion protruding away from the burner row is formed on the side plate, and the air inlet gap is provided on the air inlet portion.

[0015] According to an embodiment of the present invention, the lower surface of the air inlet portion is a plane perpendicular to the side wall of the burner row, and the upper surface of the air inlet portion is an inclined surface inclined in the direction of approaching the burner row from bottom to top. The air inlet gap is provided on the lower surface of the air inlet portion.

[0016] According to an embodiment of the present invention, the part of the side plate below the air inlet portion is in abutting contact with the side wall surface of the burner row, and the part of the side plate above the air inlet portion is arranged at intervals from the burner row.

[0017] According to an embodiment of the present invention, the lower edge of the partition plate is connected to the top of the burner row, the side plate is arranged at intervals from the side wall surface of the burner row, and the air inlet gap is provided between the side plate and the side wall surface of the burner row.

[0018] According to an embodiment of the present invention, a flanging that bends away from the burner is formed at the lower end of the side plate.

[0019] According to an embodiment of the present invention, the burner hole cap is formed as a bent stainless steel plate, and the burner is a component made of aluminized material, galvanized material, or stainless steel material.

[0020] A burner according to an embodiment of the second aspect of the present invention includes: a bracket, a burner assembly according to the above embodiment, and a baffle. The burner assemblies are multiple, and the multiple burner assemblies are arranged on the bracket in parallel. The baffle is connected to the bracket and fixes the burner assemblies on the bracket.

[0021] A heating device according to an embodiment of the third aspect of the present invention includes the burner according to the above embodiment.

[0022] According to an embodiment of the present invention, the heating device is a wall-mounted boiler or a gas water heater.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0025] Figure 1 is a schematic structural diagram of a burner assembly according to Embodiment 1 of the present invention;

[0026] Figure 2 is a cross-sectional view of a burner assembly according to Embodiment 1 of the present invention;

[0027] Figure 3 is Figure 2 an enlarged view of part A in

[0028] Figure 4 is a schematic structural diagram of a burner assembly according to Embodiment 2 of the present invention;

[0029] Figure 5 is a cross-sectional view of a burner assembly according to Embodiment 2 of the present invention;

[0030] Figure 6 is Figure 5 an enlarged view of part B in

[0031] Figure 7 is a partial enlarged view of the burner holes of a burner assembly according to Embodiment 1 of the present invention;

[0032] Figure 8It is a partial enlarged view of the flame holes of the burner assembly according to the second embodiment of the present invention;

[0033] Figure 9 It is a partial enlarged view of the secondary flame holes of the flame hole cap according to the present invention.

[0034] Reference numerals:

[0035] 100: Burner assembly;

[0036] 10: Burner; 11: Flame hole;

[0037] 20: Flame hole cap; 21: Secondary flame hole; 22: Air inlet gap; 23: Gas passage; 24: Top plate; 25: Side plate; 251: Air inlet part; 252: Flange; 26: Partition. Detailed description of the specific implementation

[0038] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0039] Refer to the following Figures 1-9 to describe the burner assembly 100 of the burner according to the embodiment of the present invention, and the burner and heating device having the same.

[0040] As Figure 1 and 4 shown, according to an embodiment of the present invention, the burner assembly 100 of the burner includes: a burner 10 and a flame hole cap 20.

[0041] As Figure 3 and 6 shown, the burner 10 is formed as a plate-shaped member that is vertically arranged and extends in the horizontal direction. An air inlet is formed at the bottom of the burner 10, a flame hole 11 is formed at the top of the burner 10 (that is, the upper surface of the burner 10), a flame transfer hole 11 is formed on the side wall of the burner 10, and a passage communicating the air inlet and the flame hole 11 is defined inside the burner 10.

[0042] As Figure 7 and 8As shown, the flame holes 11 include a plurality of flame hole groups spaced apart along the length direction of the upper surface of the burner row 10. Each flame hole group includes a strip-shaped hole extending along the width direction of the upper surface of the burner row 10 and two circular holes spaced apart along the length of the strip. The two circular holes are spaced apart from the strip-shaped hole along the length direction of the upper surface of the burner row 10. Each flame hole group may also include a strip-shaped hole extending along the width direction of the upper surface of the burner row 10 and two square holes spaced apart along the length of the strip. A circular hole is provided between the two square holes. The two square holes and the circular hole are spaced apart from the strip-shaped hole along the length direction of the upper surface of the burner row 10.

[0043] As Figure 2 , 3 , 5, and 6 show that the lower end of the flame hole cap 20 is open and sleeved on the top of the burner row 10. The flame hole cap 20 covers the flame holes 11. A plurality of secondary flame holes 21 are provided on the upper surface of the flame hole cap 20. The plurality of secondary flame holes 21 are all communicated with the flame holes 11. The gas ejected from the flame holes 11 is ejected through the plurality of secondary flame holes 21, and flames are formed at each secondary flame hole 21.

[0044] As Figure 9 shown, the plurality of secondary flame holes 21 include a plurality of secondary flame hole groups spaced apart along the length direction of the flame hole cap 20. Each secondary flame hole group includes a plurality of square secondary flame holes 21.

[0045] Wherein, an air inlet gap 22 is formed between the side wall of the flame hole cap 20 or between the inner peripheral wall of the flame hole cap 20 and the outer peripheral wall of the burner row 10. And a part of the secondary flame holes 21 among the plurality of secondary flame holes 21 is communicated with the air inlet gap 22. Air can enter into the flame hole cap 20 through the air inlet gap 22 and be mixed with a part of the gas in the flame hole cap 20. The gas mixed with air is ejected through the corresponding secondary flame holes 21 to form flames.

[0046] During the combustion process of the burner row assembly 100 according to the embodiment of the present invention, a secondary mixed combustion burner row 10 with double-layer flame holes 11 is formed. That is to say, the part of the secondary flame holes 21 communicated with the air inlet gap 22 burns to form light flames with a lower temperature; the part of the secondary flame holes 21 not communicated with the air inlet gap 22 burns to form thick flames with a higher temperature. The temperature stratification of the burner row 10 is diffused at the top of the burner row 10, the highest temperature area is reduced, and the temperature field of the combustion is uniformly distributed along the height, which can reduce the nitrogen oxides generated by thermal temperature.

[0047] Moreover, by installing the flame hole cap 20 on the burner row 10, a burner row 10 with rich combustion flames and lean combustion flames is formed. Since the rich and lean combustion flames deviate from stoichiometric combustion, the oxygen concentration in the rich flame is relatively low, and the primary combustion temperature is lower than that at the stoichiometric ratio, which can reduce the generation of nitrogen oxides. In the lean flame, the oxygen concentration is high, but the excess air will also reduce the primary combustion temperature, thereby reducing the generation of nitrogen oxides. The low flame temperature effectively reduces the thermally generated nitrogen oxides.

[0048] In addition, by installing the flame hole cap 20 on the burner row 10, a burner row 10 with rich combustion flames and lean combustion flames is formed. There is secondary mixed combustion during the rich and lean combustion process. The secondary combustion of the rich and lean flames occurs between the primary combustion products after the primary combustion is completed respectively. Since the primary combustion products contain a large amount of gases such as carbon dioxide and water vapor, the temperature and oxygen concentration in the secondary reaction zone are relatively low, and the generation of nitrogen oxides is inhibited, which can effectively reduce the thermally generated nitrogen oxides.

[0049] For the burner row assembly 100 of the burner according to the embodiment of the present invention, by reducing the maximum combustion temperature of the burner row 10 and reasonably organizing the combustion air flow, the thermally generated nitrogen oxides during the combustion process can be effectively reduced, so that the nitrogen oxide content emitted during the combustion of the atmospheric burner meets the relevant regulations, conforms to the national emission reduction and environmental protection policies, and is beneficial to expanding the applicability range of the product.

[0050] As Figure 3 and 6 shown, according to an embodiment of the present invention, a plurality of gas channels 23 are defined in the flame hole cap 20, and a plurality of secondary flame holes 21 are in one-to-one correspondence with and communicate with the plurality of gas channels 23. The ends of the gas channels 23 far from the secondary flame holes 21 are all communicated with the flame holes 11, and some of the plurality of gas channels 23 communicate with the air inlet gap 22.

[0051] By arranging the gas channels 23 in the flame hole cap 20, it is possible to effectively control whether the gas ejected from the secondary flame holes 21 is mixed with air, and further ensure that the rich flame and the lean flame burn simultaneously during the combustion of the burner row assembly 100, preventing the air entering through the air inlet gap 22 from diluting all the gas, resulting in all lean flames on the burner row assembly 100 and affecting the combustion temperature of the burner row assembly 100, and ensuring the normal combustion of the burner row assembly 100.

[0052] As Figure 3 and 6 shown, according to an embodiment of the present invention, the flame hole cap 20 includes: a top plate 24, two side plates 25 and at least one partition plate 26. The side plates 25 are arranged in the vertical direction, and secondary flame transfer holes 11 are provided on the side plates 25.

[0053] The top plate 24 extends along the length direction of the upper surface of the burner row 10. Two side edges are respectively connected to both sides of the top plate 24 and extend along the length direction of the top plate 24. An end plate is further provided between the corresponding ends of the two side plates 25. The upper surface of the end plate is connected to the end edge of the top plate 24. The top plate 24, the two side plates 25 and the two end plates cooperate to define a cap-shaped structure with an open lower end, and the cap-shaped structure is sleeved on the top of the burner row 10.

[0054] Wherein, the partition plate 26 is formed as a plate shape parallel to the side plate 25. The width of the partition plate 26 is smaller than the width of the side plate 25. The partition plate 26 is located between the two side plates 25 and the upper edge of the partition plate 26 is connected to the lower surface of the top plate 24. The partition plate 26 extends along the length direction of the top plate 24. The end of the partition plate 26 is connected to the end plate. The lower surface of the partition plate 26 abuts against the top of the burner row 10.

[0055] The gas passage 23 is defined between adjacent partition plates 26 or between the partition plate 26 and the side plate 25. That is to say, the gas passage 23 can be defined between the connected partition plates 26, or can be defined between the partition plate 26 and the side plate 25. The secondary fire holes 21 are provided on the top plate 24 and respectively correspond to different gas passages 23. The upper end of the gas passage 23 communicates with the secondary fire holes 21 above the gas passage 23, and the lower end of the gas passage 23 communicates with the fire holes 11 on the top of the burner row 10.

[0056] As Figure 3 and 6 shown, according to an embodiment of the present invention, the upper surface of the top plate 24 is formed as a stepped surface in the width direction. A plurality of secondary fire holes 21 are arranged at intervals along the length direction of the stepped surface. That is to say, the top plate 24 has a plurality of bends in the width direction. The top plate 24 forms a rising or falling stepped surface through the bends. The secondary fire holes 21 are provided on the stepped surface. A plurality of secondary fire holes 21 are provided on each stepped surface, and the secondary fire holes 21 on each stepped surface are arranged at intervals along the length direction of the corresponding stepped surface.

[0057] For example, the top plate 24 forms three stepped surfaces. Each secondary fire hole group includes three square secondary fire holes 21 arranged at intervals along the width direction of the top plate 24, and the three square secondary fire holes 21 are correspondingly provided on the three stepped surfaces. There are three gas passages 23, and the three gas passages 23 correspondingly communicate with the three square secondary fire holes 21, and the square secondary fire hole 21 located in the middle does not communicate with the air inlet gap 22.

[0058] By providing a stepped surface on the top plate 24 and arranging the secondary air holes 21 on the stepped surface, the distance between the secondary air holes 21 on adjacent stepped surfaces can be increased. This can not only prevent the increase in nitrogen oxides caused by the rich combustion flame increasing the temperature of the lean combustion flame, but also increase the distribution range of the high-temperature flame zone in the vertical direction, thereby facilitating the reduction of the flame temperature and further reducing the emission of nitrogen oxides.

[0059] As Figure 3 shown, according to an embodiment of the present invention, the middle part of the top plate 24 in the width direction is higher than the two ends of the top plate 24 in the width direction; as Figure 6 shown, the middle part of the top plate 24 in the width direction is lower than the two ends of the top plate 24 in the width direction.

[0060] That is to say, the middle part of the top plate 24 in the width direction can protrude from the two sides of the top plate 24 or can be recessed downward relative to the two sides of the top plate 24. Thus, the distribution range of the combustion flame in the vertical direction can be increased, which is beneficial to reducing the emission of nitrogen oxides.

[0061] As Figure 3 shown, according to an embodiment of the present invention, the burner row 10 abuts between the two side plates 25, and the air inlet gap 22 is arranged on the side plates 25. That is to say, the distance between the two side plates 25 is equal to the thickness of the burner row 10. When the burner hole cap 20 covers the burner row 10, the two side plates 25 are sandwiched on the burner row 10. Thus, not only can it ensure the smooth entry of air into the burner hole cap 20, but also it can improve the connection stability between the burner hole cap 20 and the burner row 10, preventing the burner hole cap 20 from moving on the burner row 10 and affecting the combustion stability of the flame.

[0062] As Figure 3 shown, according to an embodiment of the present invention, the side plate 25 is formed with an air inlet portion 251 protruding away from the burner row 10, and the air inlet gap 22 is arranged on the air inlet portion 251. The air inlet portion 251 protruding away from the burner row 10 can increase the distance between the air inlet portion 251 and the burner row 10. Arranging the air inlet gap 22 on the air inlet portion 251 that is farther away from the burner row 10 can improve the air inlet efficiency and prevent the burner row 10 from blocking the air flow.

[0063] Furthermore, as Figure 3 shown, the lower surface of the air inlet portion 251 is a plane perpendicular to the side of the burner row 10, the upper surface of the air inlet portion 251 is an inclined surface that slopes towards the burner row 10 from bottom to top, the lower edge of the inclined surface is connected to the side of the plane away from the burner row 10, the cross-section of the air inlet portion 251 is formed as a triangle, and the air inlet gap 22 is arranged on the lower surface of the air inlet portion 251.

[0064] By setting the air inlet gap 22 on a plane, the air flow can directly flow upward after entering, which can promote the mixing of the air flow and the gas. Moreover, the inclined plane has a guiding effect on the air flow, which can further reduce the resistance of the air flow.

[0065] As Figure 3 shown, in this embodiment, the part of the side plate 25 below the air inlet part 251 abuts against the side wall surface of the burner 10, and the part of the side plate 25 above the air inlet part 251 is spaced apart from the burner 10.

[0066] That is to say, the distance between the part of one side plate 25 below the air inlet part 251 and the part of the other side plate 25 at the air inlet part 251 is relatively small, just equal to the thickness of the burner 10. The part of the side plate 25 below the air inlet part 251 clamps the burner 10, which can improve the connection stability between the flame hole cap 20 and the burner 10.

[0067] The distance between the part of one side plate 25 above the air inlet part 251 and the part of the other side plate 25 above the air inlet part 251 is relatively large, greater than the thickness of the burner 10. The incoming air flow can flow through the gap between the burner 10 and the part of the side plate 25 above the air inlet part 251 to the secondary flame holes 21, preventing the distance between the side plate 25 and the burner 10 from being too small and affecting the air flow.

[0068] As Figure 6 shown, in some embodiments, according to an embodiment of the present invention, the lower edge of the partition plate 26 is connected to the top of the burner 10. That is to say, the flame hole cap 20 is connected to the burner 10 through the partition plate 26. Among them, the distance between the two side plates 25 is greater than the thickness of the burner 10. The side plates 25 are spaced apart from the side wall surface of the burner 10, and the air inlet gap 22 is provided between the side plates 25 and the side wall surface of the burner 10.

[0069] Using the partition plate 26 to connect the flame hole cap 20 and the burner 10 can form the air inlet gap 22 by increasing the distance between the side plates 25, and is beneficial to increasing the area of the air inlet cross-section of the air inlet gap 22.

[0070] As Figure 6 shown, in this embodiment, the lower end of the side plate 25 is formed with a flanging 252 bent in a direction away from the burner 10. The bending angle of the flanging 252 is between 45° and 60°. By setting the flanging 252, the flanging 252 can be used to guide the air flow into the air inlet gap 22, which is beneficial to promoting air intake and increasing the air intake volume.

[0071] According to an embodiment of the present invention, the flame hole cap 20 is formed as a stainless steel plate bending part, as Figure 3 and 6As shown, the flame hole cap 20 can be made of stainless steel plate. A stepped surface of the side plate 25 and the top plate 24 is formed through a 90° bend. The stainless steel plate of the top plate 24 part is first bent by 90°, and then the partition 26 is formed through a 180° bend according to the width of the partition 26 in the vertical direction. After that, it is bent by 90° to form another stepped surface of the top plate 24. Thus, the flame hole cap 20 is formed by bending according to the number of stepped surfaces and partitions 26.

[0072] On the one hand, the stainless steel material part has high strength, is resistant to high temperature and combustion, is not easily damaged, and has a long service life. On the other hand, the flame hole cap 20 formed by bending has a simple structure, is convenient to process, and has a simple processing technology, which is beneficial to reducing the production cost of the flame hole cap 20.

[0073] The burner row 10 is an aluminized material part, a galvanized material part or a stainless steel material part. The aluminized material part, the galvanized material part and the stainless steel material part are resistant to high temperature, have good performance, are not easily damaged, and have a relatively long service life.

[0074] The burner according to the second aspect embodiment of the present invention includes: a bracket, a burner row assembly 100 according to the above embodiment, and a baffle. There are multiple burner row assemblies 100, and the multiple burner row assemblies 100 are arranged on the bracket in parallel. The baffle is connected to the bracket and fixes the burner row assembly 100 on the bracket. By adopting the above burner row assembly 100, the nitrogen oxides generated during the combustion of the burner can be reduced, which is beneficial to energy conservation and environmental protection.

[0075] The heating device according to the third aspect embodiment of the present invention includes the burner according to the above embodiment. Among them, the heating device can be a wall-mounted boiler or a gas water heater. By adopting the above burner, the nitrogen oxides emitted when the wall-mounted boiler and the gas water heater are used can be reduced, which is energy-saving and environmentally friendly, conforms to the national emission reduction and environmental protection policy, and is beneficial to expanding the applicability range of the product.

[0076] The other components of the heating device according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0077] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0078] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A burner fire row assembly, characterized in that, Comprising: A burner, fire holes are formed at the top of the burner; A fire hole cap, the fire hole cap is sleeved on the top of the burner and covers the fire holes, a plurality of secondary fire holes are arranged on the upper surface of the fire hole cap, and the plurality of secondary fire holes are all communicated with the fire holes. An air inlet gap is formed between the side wall of the fire hole cap or between the inner peripheral wall of the fire hole cap and the outer peripheral wall of the burner, and a part of the plurality of secondary fire holes are communicated with the air inlet gap; A plurality of gas channels are defined in the fire hole cap, the plurality of secondary fire holes are correspondingly communicated with the plurality of gas channels one by one, the ends of the gas channels far away from the secondary fire holes are all communicated with the fire holes, and a part of the plurality of gas channels are communicated with the air inlet gap; The fire hole cap includes: A top plate, the top plate extends along the length direction of the upper surface of the burner, and the secondary fire holes are arranged on the top plate; Two side plates, the two side plates are respectively connected to both sides of the top plate and both extend along the length direction of the top plate; At least one partition plate, the partition plate is located between the two side plates and the upper edge of the partition plate is connected to the lower surface of the top plate, the partition plate extends along the length direction of the top plate, the lower surface of the partition plate abuts against the top of the burner, and the gas channels are defined between adjacent partition plates or between the partition plate and the side plates; The upper surface of the top plate is formed as a stepped surface in the width direction, and the plurality of secondary fire holes are arranged at intervals along the length direction of the stepped surface; Wherein, the fire hole cap is formed as a bent stainless steel plate, and a stepped surface of the side plate and the top plate is formed by a 90° bend. The stainless steel plate of the top plate part is first bent by 90°, then the partition plate is formed by a 180° bend, and then the other stepped surface of the top plate is formed by a 90° bend.

2. The burner fire row assembly according to claim 1, characterized in that, The middle part of the top plate in the width direction is higher than the two ends of the top plate in the width direction; or, The middle part of the top plate in the width direction is lower than the two ends of the top plate in the width direction.

3. The burner fire row assembly according to claim 1, characterized in that, The burner abuts between the two side plates, and the air inlet gap is arranged on the side plates.

4. The burner fire row assembly according to claim 3, characterized in that, An air inlet part protruding away from the burner is formed on the side plate, and the air inlet gap is arranged on the air inlet part.

5. The burner fire row assembly according to claim 4, characterized in that, The lower surface of the air inlet part is a plane perpendicular to the side of the burner, the upper surface of the air inlet part is an inclined surface inclined in the direction of approaching the burner from bottom to top, and the air inlet gap is arranged on the lower surface of the air inlet part.

6. The burner flame row assembly according to claim 4, characterized in that, The part of the side plate below the air inlet part is in abutting contact with the side wall surface of the burner, and the part of the side plate above the air inlet part is arranged at intervals with the burner.

7. The burner fire row assembly according to claim 1, characterized in that, The lower edge of the partition plate is connected to the top of the burner, the side plate is arranged at intervals with the side wall surface of the burner, and the air inlet gap is arranged between the side plate and the side wall surface of the burner.

8. The burner fire row assembly according to claim 7, characterized in that, The lower end of the side plate is formed with a flanging bent away from the burner.

9. The burner fire row assembly according to claim 1, characterized in that, The burner is a aluminized material part, a galvanized material part or a stainless steel material part.

10. A burner, characterized in that, Comprising: A bracket; The burner fire row assembly according to any one of claims 1-9, wherein there are a plurality of the fire row assemblies, and the plurality of the fire row assemblies are arranged on the bracket in parallel with each other; A baffle plate, which is connected to the bracket and fixes the fire row assembly on the bracket.

11. A heating device, characterized in that, It includes the burner according to claim 10.

12. The heating device according to claim 11, characterized in that, The heating device is a wall-mounted boiler or a gas water heater.

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