Combustion plate assembly, burner and gas water heater

Abstract

This utility model provides a combustion plate assembly, a burner, and a gas water heater. The combustion plate assembly includes: a combustion plate substrate and a limiting frame, the limiting frame being located on one side of the combustion plate substrate and forming a limiting groove together with the combustion plate substrate; and a perforated plate, the perforated plate being disposed between the combustion plate substrate and the limiting frame and inserted into the limiting groove; wherein, the limiting frame includes a main frame body and at least two fixing beams, the main frame body forming a limiting groove with the combustion plate substrate; the fixing beams are located in the non-perforated area of ​​the perforated plate to limit the perforated plate. This utility model solves the problem of easy deformation of the perforated plate in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of combustion water heater technology, specifically to a combustion plate assembly, a burner, and a gas water heater. Background Technology

[0002] A gas water heater is a small thermal device that uses the heat released from the combustion of gas to heat domestic water to the required temperature through a heat exchanger. It has many advantages such as high efficiency, fast water output, stable water temperature regulation, and continuous use. It is a widely used gas appliance. As people's living standards improve, the quality requirements for household products such as gas water heaters are also getting higher and higher.

[0003] Gas water heaters mainly consist of a combustion system, a heat exchange system, a flue gas system, and a temperature control system. Among these, the combustion system is the most important part of the water heater, as it involves the mixing and combustion of gas and air, which can lead to safety issues such as backfire and high temperatures. According to actual measurements, the combustion system can generate temperatures of 800 to 900 degrees Celsius, which places extremely high demands on the structure, materials, and quality of the orifice plate that is in direct contact with the flame in the combustion system.

[0004] Screws are commonly used to connect the orifice plate and the combustion plate. However, the large number of screws makes assembly difficult and imposes excessive constraints on the structure of the orifice plate. Under long-term high-temperature heating, the orifice plate is prone to deformation. Utility Model Content

[0005] The main objective of this invention is to provide a combustion plate assembly, a burner, and a gas water heater to solve the problem of easy deformation of the perforated plate in the prior art.

[0006] To achieve the above objectives, according to a first aspect of the present invention, a combustion plate assembly is provided, comprising: a combustion substrate and a limiting frame, the limiting frame being located on one side of the combustion substrate and forming a limiting groove together with the combustion substrate; and a flame hole plate, the flame hole plate being disposed between the combustion substrate and the limiting frame and inserted into the limiting groove; wherein the limiting frame includes a main frame body and at least two fixing beams, the main frame body forming a limiting groove with the combustion substrate; and the fixing beams being located in the non-flame hole area of ​​the flame hole plate to limit the flame hole plate.

[0007] Furthermore, the main frame includes three limiting strips, which are arranged sequentially along the circumferential direction of the combustion substrate. Each limiting strip and the combustion substrate together form a limiting groove segment, and the three limiting groove segments together form a limiting groove. The three circumferential sides of the fire hole plate are respectively inserted into the three limiting groove segments.

[0008] Furthermore, the three limiting strips are a first limiting strip, a second limiting strip, and a third limiting strip. The first limiting strip and the combustion substrate together form a first limiting groove segment, the second limiting strip and the combustion substrate together form a second limiting groove segment, and the third limiting strip and the combustion substrate together form a third limiting groove segment. The first limiting strip and the second limiting strip both extend along the length direction of the combustion substrate, and the third limiting strip extends along the width direction of the combustion substrate. The third limiting strip is disposed between the first limiting strip and the second limiting strip.

[0009] Furthermore, the combustion plate assembly also includes at least one connector for connecting the combustion substrate and the fire hole plate. The fire hole plate is provided with a connecting hole for the connector to pass through. The connecting hole is located at one end of the fire hole plate away from the third limiting strip, so that the connector can pass through the connecting hole and the combustion substrate to securely connect the combustion substrate and the fire hole plate.

[0010] Furthermore, the minimum width of the fixed beam along the length of the combustion substrate is 2 mm.

[0011] Furthermore, the first limiting groove segment has a first outer groove wall, a second outer groove wall, a third outer groove wall, a first inner groove wall, and a second inner groove wall. The first outer groove wall and the first inner groove wall both extend along the width direction of the combustion substrate and are arranged opposite each other along the height direction of the combustion substrate. The second outer groove wall, the second inner groove wall, and the third outer groove wall all extend along the height direction of the combustion substrate and are spaced apart along the width direction of the combustion substrate. The two sides of the second outer groove wall are connected to the first outer groove wall and the first inner groove wall, respectively. The second inner groove wall is connected to the first inner groove wall, and the third outer groove wall is connected to the first outer groove wall. The distance between the first outer groove wall and the first inner groove wall is d1, and the height of the circumferential side of the fire hole plate is h, where d1 ≥ 2 * h.

[0012] Furthermore, the distance between the second outer tank wall and the second inner tank wall is d2, where d2 ≥ 2*h.

[0013] Furthermore, the distance between the third outer tank wall and the second inner tank wall is d3, where d3 ≥ 2*h.

[0014] Furthermore, along the width direction of the combustion substrate, the minimum value of the shortest distance d4 between the second inner groove wall and the corresponding circumferential side of the fire hole plate is 0.5 mm; and / or, along the height direction of the combustion substrate, the groove depth s of the limiting groove is the same as the height of the circumferential side of the fire hole plate.

[0015] According to a second aspect of the present invention, a burner is provided, comprising the combustion plate assembly described above.

[0016] According to a third aspect of the present invention, a gas water heater is provided, including the burner described above.

[0017] The present invention provides a combustion plate assembly comprising a combustion substrate, a limiting frame, and a perforated plate. The limiting frame is located on one side of the combustion substrate and includes a main frame and at least two fixing beams. A limiting groove is formed between the main frame and the combustion substrate. The perforated plate is disposed between the combustion substrate and the limiting frame and inserted into the limiting groove, thereby limiting the circumferential edge of the perforated plate and avoiding the use of numerous screws to limit its circumferential edge. Simultaneously, by setting two fixing beams in the non-perforated area of ​​the perforated plate's center, the fixing beams constrain and limit the center of the perforated plate, avoiding the use of numerous screws to limit its center. This effectively prevents the perforated plate from deforming due to prolonged combustion, thus avoiding the use of numerous screws to connect the perforated plate to the combustion substrate. This solves the problem of perforated plates easily deforming in the prior art, reduces the assembly difficulty of the perforated plate, and lowers assembly costs. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of an embodiment of the combustion plate assembly and cooling water pipe according to the present invention is shown;

[0020] Figure 2 A top view schematic diagram of an embodiment of the combustion plate assembly according to the present invention is shown;

[0021] Figure 3 A side view schematic diagram of an embodiment of the combustion plate assembly according to the present invention is shown;

[0022] Figure 4 It shows Figure 3 A magnified view of a portion of point B in the middle;

[0023] Figure 5 A schematic diagram of an embodiment of the burner according to the present invention is shown;

[0024] Figure 6 A structural schematic diagram of an embodiment of the burner (without the air duct and fan) according to the present invention is shown.

[0025] The above figures include the following reference numerals:

[0026] 1. Combustion chamber; 3. Limiting frame; 10. Combustion base plate; 20. Flame hole plate; 40. Fixing beam; 30. Limiting groove; 31. First limiting strip; 32. Second limiting strip; 33. Third limiting strip; 34. First outer groove wall; 35. Second outer groove wall; 36. Third outer groove wall; 37. First inner groove wall; 38. Second inner groove wall; 50. Connecting hole; 6. Cold water pipe; 4. Air duct; 5. Fan. Detailed Implementation

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0030] Please refer to Figures 1 to 6This utility model provides a combustion plate assembly, including: a combustion substrate 10 and a limiting frame 3, the limiting frame being located on one side of the combustion substrate 10 and forming a limiting groove 30 together with the combustion substrate 10; a flame hole plate 20, the flame hole plate 20 being disposed between the combustion substrate 10 and the limiting frame 3 and inserted into the limiting groove 30; wherein, the limiting frame 3 includes a main frame and at least two fixing beams 40, the main frame forming the limiting groove 30 between the main frame and the combustion substrate 10; the fixing beams 40 are located in the non-flame hole area of ​​the flame hole plate 20 to limit the flame hole plate 20.

[0031] The combustion plate assembly of this utility model includes a combustion base plate 10, a limiting frame 3, and a flame perforation plate 20. The limiting frame is located on one side of the combustion base plate 10. The limiting frame 3 includes a main frame and at least two fixing beams 40. A limiting groove 30 is formed between the main frame and the combustion base plate 10. The flame perforation plate 20 is disposed between the combustion base plate 10 and the limiting frame 3 and is inserted into the limiting groove 30, so that the limiting groove 30 can limit the circumferential edge of the flame perforation plate 20, avoiding the need to use a large number of screws to limit the circumferential edge of the flame perforation plate 20. Meanwhile, by setting two fixing beams 40 in the non-fire hole area in the middle of the fire hole plate 20, the fixing beams 40 constrain and limit the middle of the fire hole plate 20, avoiding the use of a large number of screws to limit the middle of the fire hole plate 20, effectively preventing the fire hole plate 20 from deforming due to long-term combustion, thereby avoiding the use of a large number of screws to connect the fire hole plate 20 and the combustion substrate 10, thus solving the problem of fire hole plates being prone to deformation in the prior art, reducing the assembly difficulty of the fire hole plate 20, and reducing the assembly cost.

[0032] Specifically, at least two fixing beams 40 are spaced apart on the main frame along the length of the combustion substrate 10, and each fixing beam 40 extends along the width of the combustion substrate 10. The limiting frame 3 provides planar contact constraint to the fire hole plate 20, replacing the fastening constraint of screws. Through the surface-bearing structure, the structural stress of the fire hole plate 20 can be released and rebound, improving the structural reliability of the fire hole plate 20 and preventing deformation of the fire hole plate 20 under long-term combustion. At the same time, compared with the traditional screw fixing, the plug-in assembly method makes the assembly process of the fire hole plate 20 simple and quick, saving 9 screws, reducing assembly costs, and improving the production efficiency of gas water heaters.

[0033] Specifically, the combustion substrate 10 is a water-cooled combustion plate.

[0034] The combustion plate assembly of this utility model reduces the number of screws from 10 to 1, which greatly improves the assembly efficiency of the fire hole plate 20 and increases the production capacity of the gas water heater. At the same time, the gap fit between the limiting frame 3 and the fire hole plate 20 avoids stress concentration in the fire hole plate 20 and reduces the risk of deformation of the fire hole plate 20.

[0035] In this embodiment, the main frame includes three limiting strips, which are arranged sequentially along the circumferential direction of the combustion substrate 10. Each limiting strip and the combustion substrate 10 together form a limiting groove segment, and the three limiting groove segments together form a limiting groove 30. The three circumferential sides of the fire hole plate 20 are respectively inserted into the three limiting groove segments.

[0036] Specifically, when the three circumferential sides of the perforated plate 20 are inserted into the limiting groove section one by one, the design of the limiting groove section can avoid over-tightening the perforated plate 20. This reduces the concentration of thermal stress generated by high-temperature combustion on the perforated plate 20, which helps the perforated plate 20 maintain structural stability under long-term high-temperature working conditions and significantly reduces the risk of deformation caused by thermal expansion. At the same time, compared with traditional screw fixing, the insertion-type assembly method greatly simplifies the installation and disassembly process of the perforated plate 20. There is no need to tighten or loosen screws one by one; simply align the perforated plate 20 correctly and insert it into the limiting groove 30 to complete the assembly. This greatly improves the assembly speed and efficiency of the gas water heater and also facilitates the maintenance and cleaning of the perforated plate 20. It also reduces the hardware requirements for fixing the perforated plate, especially reducing the number of screws (from 10 to 1), saving assembly costs and further improving the product's economic benefits. Meanwhile, due to the use of a plug-in assembly method, the fire hole plate 20 can expand and contract freely within a certain range without being damaged due to structural limitations. This design helps to extend the service life of the fire hole plate 20 and reduce the frequency of maintenance.

[0037] In practice, the axial cross-section of the limiting strip and the fixing beam 40 is not limited to rectangles; it can be square, circular, etc.

[0038] In this embodiment, the three limiting strips are a first limiting strip 31, a second limiting strip 32, and a third limiting strip 33. The first limiting strip 31 and the combustion substrate 10 together form a first limiting groove segment, the second limiting strip 32 and the combustion substrate 10 together form a second limiting groove segment, and the third limiting strip 33 and the combustion substrate 10 together form a third limiting groove segment. The first limiting strip 31 and the second limiting strip 32 both extend along the length direction of the combustion substrate 10, and the third limiting strip 33 extends along the width direction of the combustion substrate 10. The third limiting strip 33 is disposed between the first limiting strip 31 and the second limiting strip 32.

[0039] Specifically, the first limiting strip 31 and the second limiting strip 32 extend along the length direction of the combustion substrate 10, and the third limiting strip 33 extends along the width direction of the combustion substrate 10. This arrangement means that the flame plate 20 can obtain positioning references from multiple directions during assembly, ensuring the assembly accuracy of the flame plate 20 and the flatness of the combustion surface, avoiding uneven combustion and low efficiency caused by assembly errors. At the same time, by having the flame plate 20 inserted into the limiting grooves in different directions on its three circumferential sides, the flame plate 20 is prevented from being excessively constrained at one or more points, effectively dispersing the thermal stress generated during high-temperature combustion, reducing the possibility of deformation of the flame plate 20 under extreme conditions, and extending its service life. In addition, the addition of the limiting strips not only helps in the positioning of the flame plate 20, but also indirectly strengthens the structure of the combustion substrate 10 itself, especially under long-term high-temperature operation, the combustion substrate 10 is less prone to twisting.

[0040] In this embodiment, the combustion plate assembly further includes at least one connector for connecting the combustion substrate 10 and the fire hole plate 20. The fire hole plate 20 is provided with a connecting hole 50 for the connector to pass through. The connecting hole 50 is located at one end of the fire hole plate 20 away from the third limiting strip 33, so that the connector passes through the connecting hole 50 and the combustion substrate 10, so that the combustion substrate 10 and the fire hole plate 20 are securely connected.

[0041] Specifically, a connector passes through the connecting hole 50 and the combustion plate 10 to securely connect the combustion plate 10 and the orifice plate 20, ensuring precise alignment of the orifice plate 20 on the combustion plate 10. This secure connection provides additional stability, preventing any movement or vibration of the orifice plate 20 during combustion, thus ensuring uniform mixing of fuel gas and air for efficient and stable combustion. The connecting hole 50 is located at the end of the orifice plate 20 furthest from the third limiting strip 33. This means that when the orifice plate 20 expands due to heat, it can gain a certain degree of freedom at this unconstrained end, releasing thermal stress. This design avoids warping or deformation of the orifice plate 20 caused by thermal stress concentration, extending its service life. Furthermore, by using the connecting hole 50 at one end of the orifice plate 20 for secure connection, rather than distributing multiple fastening points evenly on the orifice plate 20, the assembly and disassembly process of the orifice plate 20 is simplified. When cleaning, inspection or replacement is required, the operator only needs to disconnect the connector at one end to easily remove the fire hole plate 20, which greatly improves the efficiency and convenience of fire hole plate 20 maintenance.

[0042] Optionally, the connector is a screw; or the connector is a snap-fit. In this case, the connector is set on the fire hole plate 20, and the combustion base plate 10 is provided with a slot. The shape of the slot often matches the snap-fit ​​to ensure that the snap-fit ​​can be inserted smoothly and form a stable connection after insertion.

[0043] In this embodiment, the minimum width of the fixed beam 40 along the length of the combustion substrate 10 is 2 mm.

[0044] Specifically, this arrangement ensures that the fixing beam 40 provides the necessary constraint for the orifice plate 20, preventing it from warping or deforming due to temperature changes or external forces. When the fixing beam 40 has a width of 2mm along the length of the combustion plate 10, it ensures sufficient strength to constrain the orifice plate 20 while avoiding excessive material usage and reducing production costs. Simultaneously, it effectively reduces the overall weight of the limiting frame 3 and the combustion plate assembly. Furthermore, the narrower fixing beam 40 can more efficiently adapt to the thermal expansion and contraction of the orifice plate 20.

[0045] In this embodiment, the first limiting groove segment has a first outer groove wall 34, a second outer groove wall 35, a third outer groove wall 36, a first inner groove wall 37, and a second inner groove wall 38. The first outer groove wall 34 and the first inner groove wall 37 extend along the width direction of the combustion substrate 10 and are arranged opposite each other along the height direction of the combustion substrate 10. The second outer groove wall 35, the second inner groove wall 38, and the third outer groove wall 36 extend along the height direction of the combustion substrate 10 and are spaced apart along the width direction of the combustion substrate 10. The two sides of the second outer groove wall 35 are connected to the first outer groove wall 34 and the first inner groove wall 37, respectively. The second inner groove wall 38 is connected to the first inner groove wall 37, and the third outer groove wall 36 is connected to the first outer groove wall 34. The distance between the first outer groove wall 34 and the first inner groove wall 37 is d1, and the height of the circumferential side of the fire hole plate 20 is h, where d1 ≥ 2 * h.

[0046] Specifically, the second limiting groove segment and the first limiting groove segment have the same structure, and the positional relationship between the second limiting groove segment and the corresponding circumferential side of the fire hole plate 20 is the same as the positional relationship between the first limiting groove segment and the corresponding circumferential side of the fire hole plate 20.

[0047] Specifically, the first outer groove wall 34 and the first inner groove wall 37 are parallel to each other, the second outer groove wall 35, the second inner groove wall 38 and the third outer groove wall 36 are parallel to each other, the distance between the first outer groove wall 34 and the first inner groove wall 37 is d1, and the height of the circumferential side of the fire hole plate 20 is h, d1≥2*h. This not only improves the overall structural strength of the combustion plate assembly and ensures that the limiting frame 3 can fully constrain the fire hole plate 20, avoiding the small distance between the first outer groove wall 34 and the first inner groove wall 37, which would result in insufficient restraint of the fire hole plate 20 by the limiting frame 3, but also reduces the amount of material used and lowers the production cost.

[0048] In this embodiment, the distance between the second outer wall 35 and the second inner wall 38 is d2, where d2 ≥ 2*h.

[0049] Specifically, this setup not only improves the overall structural strength of the combustion plate assembly and ensures that the limiting frame 3 can fully constrain the fire hole plate 20, avoiding the small distance between the second outer groove wall 35 and the second inner groove wall 38, which would result in insufficient restraint of the fire hole plate 20 by the limiting frame 3, but also reduces material usage and lowers production costs.

[0050] In this embodiment, the distance between the third outer wall 36 and the second inner wall 38 is d3, where d3 ≥ 2*h.

[0051] Specifically, this setup not only improves the overall structural strength of the combustion plate assembly and ensures that the limiting frame 3 can fully constrain the fire hole plate 20, avoiding the situation where the distance between the third outer groove wall 36 and the second inner groove wall 38 is too small, resulting in insufficient restraint of the fire hole plate 20 by the limiting frame 3, but also reduces material usage and lowers production costs.

[0052] Preferably, d1 = 2*h, d2 = 2*h, and d3 = 2*h.

[0053] In this embodiment, along the width direction of the combustion substrate 10, the shortest distance d4 between the second inner groove wall 38 and the circumferential side of the corresponding fire hole plate 20 is 0.5 mm; and / or, along the height direction of the combustion substrate 10, the groove depth s of the limiting groove 30 is the same as the height of the circumferential side of the fire hole plate 20.

[0054] Specifically, the shortest distance d4 between the second inner groove wall 38 and the corresponding circumferential side of the flame hole plate 20 refers to the distance between the circumferential side of the flame hole plate 20, which is parallel to the second inner groove wall 38, and the second inner groove wall 38. The shortest distance d4 between the second inner groove wall 38 and the corresponding circumferential side of the flame hole plate 20 is 0.5mm, ensuring that the flame hole plate 20 and the first limiting groove section are fitted with a gap. This not only facilitates the positioning of the flame hole plate 20 during assembly but also makes it easier to disassemble during maintenance or replacement. This slight gap means that the flame hole plate 20 can be removed from the combustion plate 10 relatively easily without difficulty due to over-tightening or material deformation. By setting the groove depth s of the limiting groove 30 to be the same as the height of the circumferential side of the flame hole plate 20, the manufacturing process of the combustion plate assembly can be more precise, reducing the scrap rate during production. Precise dimensional control also reduces material waste and lowers production costs.

[0055] This invention also provides a burner, including the aforementioned combustion plate assembly.

[0056] The burner of this utility model includes the aforementioned combustion plate assembly, housing, cold water pipe 6, air duct 4, and fan 5. The fan 5 provides sufficient air and power for combustion. A combustion chamber 1 is provided inside the housing. The cold water pipe 6 is located on the left and right sides of the combustion plate 10, mainly used for water intake and simultaneously absorbing heat from the combustion plate 10 to cool it down. The flame perforation plate 20 is assembled on the upper surface of the combustion plate 10 to evenly distribute the gas mixture from bottom to top. The upper surface of the flame perforation plate 20 is the combustion chamber 1, which is used for flame combustion. The combustion plate assembly includes the combustion plate 10, a limiting frame 3, and the flame perforation plate 20. The limiting frame 3 is located on one side of the combustion plate 10 and includes a main frame and at least two fixing beams 40. The main frame and the combustion plate 10 are connected by... A limiting groove 30 is formed, and the flame hole plate 20 is disposed between the combustion substrate 10 and the limiting frame 3 and inserted into the limiting groove 30. This allows the limiting groove 30 to limit the circumferential edge of the flame hole plate 20, avoiding the need to use a large number of screws to limit the circumferential edge of the flame hole plate 20. At the same time, by setting two fixing beams 40 in the non-flame hole area in the middle of the flame hole plate 20, the fixing beams 40 constrain and limit the middle of the flame hole plate 20, avoiding the need to use a large number of screws to limit the middle of the flame hole plate 20. This effectively prevents the flame hole plate 20 from deforming due to long-term combustion, thereby avoiding the need to use a large number of screws to connect the flame hole plate 20 to the combustion substrate 10. This solves the problem of easy deformation of the flame hole plate in the prior art, reduces the assembly difficulty of the flame hole plate 20, and reduces the assembly cost.

[0057] The burner of this invention can also be used in wall-hung boilers and other equipment for supplying hot water / heating.

[0058] This utility model also provides a gas water heater, including the burner described above.

[0059] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0060] The combustion plate assembly of this utility model includes a combustion base plate 10, a limiting frame 3, and a flame perforation plate 20. The limiting frame is located on one side of the combustion base plate 10. The limiting frame 3 includes a main frame and at least two fixing beams 40. A limiting groove 30 is formed between the main frame and the combustion base plate 10. The flame perforation plate 20 is disposed between the combustion base plate 10 and the limiting frame 3 and is inserted into the limiting groove 30, so that the limiting groove 30 can limit the circumferential edge of the flame perforation plate 20, avoiding the need to use a large number of screws to limit the circumferential edge of the flame perforation plate 20. Meanwhile, by setting two fixing beams 40 in the non-fire hole area in the middle of the fire hole plate 20, the fixing beams 40 constrain and limit the middle of the fire hole plate 20, avoiding the use of a large number of screws to limit the middle of the fire hole plate 20, effectively preventing the fire hole plate 20 from deforming due to long-term combustion, thereby avoiding the use of a large number of screws to connect the fire hole plate 20 and the combustion substrate 10, thus solving the problem of fire hole plates being prone to deformation in the prior art, reducing the assembly difficulty of the fire hole plate 20, and reducing the assembly cost.

[0061] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0062] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0063] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A combustion plate assembly, characterized in that, include: Combustion substrate (10) and limiting frame (3), wherein the limiting frame (3) is located on one side of the combustion substrate (10) and together with the combustion substrate (10) forms a limiting groove (30); A fire hole plate (20) is disposed between the combustion substrate (10) and the limiting frame (3) and inserted into the limiting groove (30); The limiting frame (3) includes a main frame and at least two fixed beams (40), and the limiting groove (30) is formed between the main frame and the combustion substrate (10); the fixed beams (40) are located in the non-fire hole area of ​​the fire hole plate (20) to limit the fire hole plate (20).

2. The combustion plate assembly according to claim 1, characterized in that, The main frame includes three limiting strips, which are arranged sequentially along the circumferential direction of the combustion substrate (10). Each limiting strip and the combustion substrate (10) together form a limiting groove segment, and the three limiting groove segments together form the limiting groove (30). The three circumferential sides of the fire hole plate (20) are respectively inserted into the three limiting groove segments.

3. The combustion plate assembly according to claim 2, characterized in that, The three limiting strips are a first limiting strip (31), a second limiting strip (32), and a third limiting strip (33). The first limiting strip (31) and the combustion substrate (10) together form a first limiting groove segment. The second limiting strip (32) and the combustion substrate (10) together form a second limiting groove segment. The third limiting strip (33) and the combustion substrate (10) together form a third limiting groove segment. The first limiting strip (31) and the second limiting strip (32) both extend along the length direction of the combustion substrate (10). The third limiting strip (33) extends along the width direction of the combustion substrate (10). The third limiting strip (33) is disposed between the first limiting strip (31) and the second limiting strip (32).

4. The combustion plate assembly according to claim 3, characterized in that, The combustion plate assembly further includes at least one connector for connecting the combustion substrate (10) and the fire hole plate (20). The fire hole plate (20) is provided with a connecting hole (50) for the connector to pass through. The connecting hole (50) is located at one end of the fire hole plate (20) away from the third limiting strip (33) so that the connector passes through the connecting hole (50) and the combustion substrate (10) to securely connect the combustion substrate (10) to the fire hole plate (20).

5. The combustion plate assembly according to claim 1, characterized in that, The minimum width of the fixed beam (40) along the length of the combustion substrate (10) is 2 mm.

6. The combustion plate assembly according to claim 3, characterized in that, The first limiting groove segment has a first outer groove wall (34), a second outer groove wall (35), a third outer groove wall (36), a first inner groove wall (37), and a second inner groove wall (38). The first outer groove wall (34) and the first inner groove wall (37) both extend along the width direction of the combustion substrate (10) and are arranged opposite each other along the height direction of the combustion substrate (10). The second outer groove wall (35), the second inner groove wall (38), and the third outer groove wall (36) all extend along the height direction of the combustion substrate (10) and are arranged opposite each other. The second outer groove wall (35) is spaced apart along the width direction of the combustion substrate (10). The two sides of the second outer groove wall (35) are connected to the first outer groove wall (34) and the first inner groove wall (37) respectively. The second inner groove wall (38) is connected to the first inner groove wall (37). The third outer groove wall (36) is connected to the first outer groove wall (34). The distance between the first outer groove wall (34) and the first inner groove wall (37) is d1. The height of the circumferential side of the fire hole plate (20) is h. d1≥2*h.

7. The combustion plate assembly according to claim 6, characterized in that, The distance between the second outer wall (35) and the second inner wall (38) is d2, where d2 ≥ 2*h.

8. The combustion plate assembly according to claim 6, characterized in that, The distance between the third outer wall (36) and the second inner wall (38) is d3, where d3 ≥ 2*h.

9. The combustion plate assembly according to claim 6, characterized in that, Along the width direction of the combustion substrate (10), the minimum value of the shortest distance d4 between the second inner groove wall (38) and the corresponding fire hole plate (20) is 0.5 mm; and / or, along the height direction of the combustion substrate (10), the groove depth s of the limiting groove (30) is the same as the height of the circumferential side of the fire hole plate (20).

10. A burner, characterized in that, The combustion plate assembly includes any one of claims 1 to 9.

11. A gas water heater, characterized in that, Includes the burner as described in claim 10.

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