Combustor assembly and gas water heater

Abstract

The utility model relates to and discloses a burner assembly and a gas water heater. Relates to the technical field of water heaters. The combustor specifically comprises a combustor frame body and a filter part, wherein the filter part is arranged at the bottom of the combustor frame body; the combustor frame body comprises a plurality of side plates which are sequentially connected and surround a circle, the side plates surround a circle to form a combustion cavity with openings in the top and the bottom, the filter part covers the outer side of the bottom opening of the combustion cavity, the bottom opening of the combustion cavity and the filter part form a secondary air inlet structure, and external air enters the combustion cavity from the secondary air inlet structure; and the filtering piece is used for filtering external air entering the combustion cavity. The bottom opening of the combustion cavity and the filtering piece covering the outer side of the opening form a secondary air inlet structure, a bottom plate is omitted, and a secondary air inlet formed in the bottom plate is omitted, so that the combustor frame is easier and more convenient to assemble, the assembly efficiency of the combustor assembly is improved, materials are saved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a burner assembly and a gas water heater. Background Art

[0002] Water heaters are an indispensable device for home life. In terms of energy used, they can be roughly divided into gas water heaters, electric water heaters and solar water heaters, among which gas water heaters are widely used by the general public. As the main component of a gas water heater, the combustion heat exchange system is generally composed of a combustion heat exchange component and a gas supply component, and the combustion heat exchange component includes a fan component, a heat exchange component and a burner component. For the upper draft combustion heat exchange system, the fan component is placed above the heat exchange component, and the burner component is set below the heat exchange component.

[0003] Existing burner assemblies are usually provided with a primary air inlet and a secondary air inlet. When working, the burner assembly receives the gas from the gas supply assembly through the primary air inlet and burns it. The high-temperature flue gas after combustion flows out of the burner assembly under the suction of the fan assembly, flows through the heat exchange assembly and exchanges heat with the water to be heated, then flows to the fan assembly and is discharged. In addition to draining the high-temperature flue gas after combustion, the fan assembly also drives external air into the burner assembly from the primary air inlet and the secondary air inlet to provide sufficient oxygen for the combustion of the gas.

[0004] At present, the secondary air inlet of the burner assembly is set. When the fan assembly draws external air into the burner assembly through the secondary air inlet, external impurities are also sucked into the burner assembly through the secondary air inlet. On the one hand, the external impurities are stuck in the burner assembly, hindering the inflow of external air, which easily leads to insufficient oxygen supply, incomplete combustion, and excessive CO. On the other hand, the external impurities are mixed into the gas in the burner assembly, hindering the combustion of the gas, which easily leads to unstable combustion, and further affects the heat exchange efficiency of the combustion heat exchange system. At the same time, how to improve the assembly efficiency of the burner assembly and reduce production costs is also an urgent problem to be solved in current production. Utility Model Content

[0005] The purpose of the utility model is to provide a burner assembly and a gas water heater to address the deficiencies of the above-mentioned prior art, which can prevent external impurities from entering the burner assembly, thereby improving the overall combustion stability of the burner assembly, and can also improve the assembly efficiency of the burner assembly and reduce production costs.

[0006] The utility model proposes a burner assembly, comprising a burner frame and a filter, wherein the filter is arranged at the bottom of the burner frame; the burner frame comprises a plurality of side plates which are sequentially connected and surrounded, the plurality of side plates surround a combustion chamber with top and bottom openings, the filter cover is arranged at the outside of the bottom opening of the combustion chamber, the bottom opening of the combustion chamber and the filter form a secondary air intake structure, the secondary air intake structure connects the combustion chamber with the outside, the outside air enters the combustion chamber from the secondary air intake structure, and the filter filters the outside air entering the combustion chamber.

[0007] Furthermore, the filter element includes a filter screen covered on the outside of the bottom opening of the combustion chamber, and a mounting plate for mounting the filter screen on the bottom of the burner frame, the filter screen is provided with filter holes for allowing outside air to enter the combustion chamber, and the filter holes filter the outside air entering the combustion chamber.

[0008] Furthermore, the cross-sectional area of ​​the filter screen in the horizontal direction gradually increases from bottom to top.

[0009] Furthermore, the filter includes a plurality of closed surfaces formed in a circle, and an air inlet surface arranged at the bottom of the plurality of closed surfaces, the mounting plate is arranged at the top of the plurality of closed surfaces, the plurality of closed surfaces are used to guide outside air to the air inlet surface, the air inlet surface is connected with the bottom opening of the combustion chamber, the filter hole is arranged on the air inlet surface, and is used to connect the air inlet surface with the outside world, and the outside air gathered at the air inlet surface enters the combustion chamber from the filter hole, so as to reduce the air resistance of the outside air entering the combustion chamber.

[0010] Furthermore, a connecting plate is provided at the bottom of the two opposite side panels, and a slide groove with an open end is formed between the connecting plate and the bottom of the two adjacent side panels. A slide rail extends outward from the mounting plate, and the slide rail is slidably inserted into the slide groove.

[0011] Furthermore, a limiting plate is extended inwardly from the bottom of the two side plates adjacent to the connecting plate, and when the slide rail is slidably inserted into the slide groove, the limiting plate abuts against the mounting plate.

[0012] Furthermore, the mounting plate is upwardly extended with a stop plate, the slide rail and the slide slot are slidably plugged to, and the stop plate abuts against a side plate adjacent to the connecting plate to limit the sliding plugging of the slide rail and the slide slot.

[0013] Furthermore, the stop plate is provided with a through hole, a side plate adjacent to the connecting plate is provided with a connecting hole, and the filter element further comprises a connecting element with one end passing through the through hole and connected to the connecting hole.

[0014] Furthermore, the burner frame also includes an abutment plate extending outward from the top of the two side plates relative to each other, and a bending plate extending upward on the abutment plate. A surrounding edge is provided at the bottom of the heat exchanger frame, the abutment plate abuts against the bottom of the surrounding edge, and the bending plate abuts against one side and the top of the surrounding edge.

[0015] The utility model also provides a gas water heater, comprising the burner assembly mentioned above.

[0016] The utility model provides a burner assembly and a gas water heater with the following gain effects:

[0017] (1) The bottom opening of the combustion chamber of the burner assembly forms a secondary air inlet structure with the filter element covered on the outside of the opening, thereby reducing the need for a bottom plate and a secondary air inlet on the bottom plate, thereby making the assembly of the burner frame simpler and more convenient, improving the assembly efficiency of the burner assembly, saving materials, and reducing production costs;

[0018] (2) The filter cover of the burner assembly is arranged outside the bottom opening of the combustion chamber. Under the action of the fan assembly, when the outside air enters the combustion chamber through the filter and the bottom opening of the combustion chamber, the filter filters the outside impurities, thereby preventing the outside impurities from entering the burner assembly, thereby improving the overall combustion stability of the burner assembly and ensuring that the gas is fully burned in the burner assembly;

[0019] (3) The burner assembly is provided with filter holes on the filter screen. When the fan assembly draws outside air into the combustion chamber through the secondary air inlet structure, the filter holes allow outside air to pass through, thereby allowing outside air to enter the combustion chamber through the bottom opening of the combustion chamber, and filter the outside air passing through, blocking large particles of impurities in the outside air, thereby preventing impurities from entering the burner assembly, thereby improving the overall combustion stability of the burner assembly and ensuring that the gas is fully burned in the burner assembly;

[0020] (4) The filter screen of the burner assembly includes a plurality of closed surfaces and an air inlet surface. The plurality of closed surfaces are inclined from top to bottom in a direction close to each other. The filter holes are arranged on the air inlet surface at the bottom of the plurality of closed surfaces. The outside air is collected along the plurality of closed surfaces inclined from top to bottom in a direction close to each other toward the air inlet surface at the bottom of the plurality of closed surfaces, and then enters the combustion chamber through the filter holes on the air inlet surface and the opening at the bottom of the combustion chamber, thereby reducing air resistance and accelerating the flow rate of air into the combustion chamber, thereby providing sufficient oxygen for the combustion of the fuel gas;

[0021] (5) A connecting plate is provided at the bottom of two opposite side plates in the burner assembly, and a slide groove with one end open is formed between the two connecting plates and the two adjacent side plates. Slide rails extending outward are provided on opposite sides of the mounting plate. The mounting plate can be connected to the bottom of the burner frame by slidingly plugging the two slide rails with the two slide grooves respectively, so that the filter element can be installed at the bottom of the burner frame conveniently and quickly, thereby improving production efficiency;

[0022] (6) A surround is provided at the bottom of the heat exchanger frame of the burner assembly, and the burner frame also includes an abutment plate and a bending plate. The abutment plate extends outward from the tops of the two opposite side plates, and the bending plate extends upward on the abutment plate. The bending plate is bent from one side of the surround to the top of the surround, so that the bending plate abuts against one side and the top of the surround, so that the burner frame is easy and quick to install at the bottom of the heat exchanger frame, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the utility model and, together with the description, are used to explain the principle of the utility model. In the accompanying drawings, like reference numerals are used to represent like elements.

[0024] Figure 1 A cross-sectional schematic diagram of a burner assembly according to an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure in which a filter element of a burner assembly according to an embodiment of the utility model is installed at the bottom of a burner housing;

[0026] Figure 3 This is a schematic structural diagram of a burner housing of a burner assembly according to an embodiment of the utility model;

[0027] Figure 4 This is a schematic structural diagram of a filter element of a burner assembly according to an embodiment of the utility model;

[0028] Figure 5 It is a cross-sectional schematic diagram of a gas water heater according to an embodiment of the utility model.

[0029] In the figure: 1. burner assembly; 11. burner frame; 111. combustion chamber; 112. side plate; 1121. primary air inlet; 113. connecting plate; 1131. slide groove; 114. limit plate; 115. abutment plate; 116. bending plate; 12. filter element; 121. filter screen; 1211. filter hole; 1212. closing surface; 1213. air inlet surface; 122. mounting plate; 1221. slide rail; 1222. stop plate; 13. air inlet duct; 2. heat exchanger; 3. fan assembly. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] See also Figure 1 to Figure 5 A burner assembly 1 according to an embodiment of the utility model includes a burner frame 11 and a filter 12, wherein the filter 12 is arranged at the bottom of the burner frame 11; the burner frame 11 includes a plurality of side plates 112 which are sequentially connected and surrounded, wherein the plurality of side plates 112 surround a combustion chamber 111 with top and bottom openings, and the filter 12 is covered on the outside of the bottom opening of the combustion chamber 111.

[0032] It can be foreseen that: a primary air inlet 1121 is provided on the side panel 112 on one side of the burner frame 11, and the burner assembly 1 also includes an air intake pipe 13, and the primary air inlet 1121 connects one side of the combustion chamber 111 with the outside world. One end of the air intake pipe 13 is connected to the primary air inlet 1121, and the other end is connected to the gas supply assembly, so that the gas provided by the gas supply assembly enters the combustion chamber 111 through the primary air inlet 1121 after flowing through the air intake pipe 13.

[0033] The bottom opening of the combustion chamber 111 forms a secondary air inlet structure with the filter element 12 disposed outside the opening, and the bottom of the combustion chamber 111 is connected to the outside through the secondary air inlet structure, so that the outside air can enter the combustion chamber 111 through the secondary air inlet structure. In the combustion chamber 111, while the gas burns to form a flame, the outside air enters the combustion chamber 111 through the secondary air inlet structure, thereby providing sufficient oxygen for the combustion of the gas, thereby preventing insufficient oxygen supply, incomplete combustion of the gas, and causing excessive CO.

[0034] The present embodiment also provides a gas water heater, including the burner assembly 1 and the heat exchanger 2, wherein the burner assembly 1 is fixedly mounted at the bottom of the heat exchanger 2. The top opening of the combustion chamber 111 is a flame outlet channel, and when the burner frame 11 is connected to the frame of the heat exchanger 2, the flame outlet channel is connected to the frame of the heat exchanger 2, so that the flame formed in the combustion chamber 111 can enter the frame of the heat exchanger 2 through the flame outlet channel, and then generate high-temperature flue gas in the frame of the heat exchanger 2, providing heat for the heat exchange between the heat exchanger 2 and the cold water, and realizing the function of the heat exchanger 2 heating the cold water.

[0035] It can be foreseen that: the gas water heater in this embodiment also includes a fan assembly 3, and the fan assembly 3 is arranged above the heat exchanger 2. The fan assembly 3 forms a negative pressure, thereby drawing the outside air into the combustion chamber 111 through the secondary air inlet structure, so that the outside air flows into the combustion chamber 111 faster, thereby providing sufficient oxygen for the combustion of the gas.

[0036] The flame formed in the combustion chamber 111 enters the frame of the heat exchanger 2 through the flame outlet channel, generating high-temperature flue gas in the space inside the frame of the heat exchanger 2. The negative pressure formed by the fan assembly 3 also draws up the high-temperature flue gas generated in the frame of the heat exchanger 2, causing it to exchange heat with the cold water passed into the heat exchanger 2, and the exhaust gas after the heat exchange is discharged.

[0037] In the present application, the secondary air inlet structure is formed by a bottom opening of the combustion chamber 111 surrounded by a plurality of side panels 112, and is combined with a filter 12 that is covered outside the opening. Compared with the prior art, in which a bottom plate is provided at the bottom of the plurality of side panels 112, and then a secondary air inlet is provided on the bottom plate, the present application reduces the provision of the bottom plate, thereby making the assembly of the burner frame 11 simpler and more convenient, improving the assembly efficiency of the burner assembly 1, saving materials, and reducing production costs.

[0038] Moreover, the filter element 12 is covered on the outside of the bottom opening of the combustion chamber 111. Under the action of the fan assembly 3, when the outside air enters the combustion chamber 111 through the secondary air inlet structure formed by the filter element 12 and the bottom opening of the combustion chamber 111, the filter element 12 filters the external impurities, thereby preventing the external impurities from entering the burner assembly 1, thereby improving the overall combustion stability of the burner assembly 1 and ensuring that the gas is fully burned in the burner assembly 1.

[0039] In this embodiment, the filter element 12 includes a filter screen 121 covering the outer side of the bottom opening of the combustion chamber 111, and a mounting plate 122 for mounting the filter screen 121 on the bottom of the burner frame 11. The filter screen 121 is provided with a filter hole 1211 for allowing outside air to enter the combustion chamber 111. The filter hole 1211 filters the outside air entering the combustion chamber 111. In the present application, the filter element 12 includes the filter screen 121 and the mounting plate 122, and the mounting plate 122 is connected to the bottom of the side plate 112, so that the filter screen 121 is covered on the outer side of the bottom opening of the combustion chamber 111.

[0040] A filter hole 1211 is provided on the filter screen 121. When the fan assembly 3 draws outside air into the combustion chamber 111 through the secondary air inlet structure, the filter hole 1211 allows outside air to pass through, so that the outside air can enter the combustion chamber 111 through the bottom opening of the combustion chamber 111, and filters the outside air passing through to block large particles of impurities in the outside air, thereby preventing outside impurities from entering the burner assembly 1, thereby improving the overall combustion stability of the burner assembly 1 and ensuring that the gas is fully burned in the burner assembly 1.

[0041] In this embodiment, the cross-sectional area of ​​the filter 121 in the horizontal direction gradually increases from bottom to top. Specifically, in this application, the filter 121 can be a trapezoidal filter, that is, the cross-sectional area of ​​the filter 121 in the vertical direction is a trapezoid. At the same time, the cross-sectional area of ​​the trapezoidal filter 121 in the horizontal direction gradually increases from bottom to top, that is, the filter 121 is arranged at the bottom of the burner frame 11 in an inverted trapezoidal structure, so that the outside air passes through the filter 121 and the bottom opening of the combustion chamber 111 to enter the combustion chamber 111, and the air resistance is reduced, so that the outside air flows into the combustion chamber 111 faster, thereby providing sufficient oxygen for the combustion of the gas.

[0042] Specifically, in this embodiment, the filter 121 includes a plurality of closed surfaces 1212 formed in a circle, and an air inlet surface 1213 arranged at the bottom of the plurality of closed surfaces 1212. The mounting plate 122 is arranged at the top of the plurality of closed surfaces 1212. The plurality of closed surfaces 1212 are used to guide outside air to the air inlet surface 1213. The air inlet surface 1213 is connected to the bottom opening of the combustion chamber 111. The filter hole 1211 is arranged on the air inlet surface 1213 to connect the air inlet surface 1213 with the outside world. The outside air gathered at the air inlet surface 1213 enters the combustion chamber 111 from the filter hole 1211, so as to reduce the air resistance of the outside air entering the combustion chamber 111.

[0043] In the present application, the filter screen 121 includes a plurality of closed surfaces 1212 and an air inlet surface 1213, the plurality of closed surfaces 1212 are surrounded, and the air inlet surface 1213 is arranged at the bottom of the plurality of closed surfaces 1212. In the previous embodiment, it is mentioned that the filter screen 121 is arranged at the bottom of the burner frame 11 in an inverted trapezoidal structure, so the plurality of closed surfaces 1212 are inclined from top to bottom in a direction of approaching each other, and the filter holes 1211 are arranged on the air inlet surface 1213 at the bottom of the plurality of closed surfaces 1212.

[0044] Under the action of the fan assembly 3, the outside air on both sides of the filter 121 is collected along the multiple closed surfaces 1212 toward the air inlet surface 1213 at the bottom. Since the air inlet surface 1213 is connected to the bottom opening of the combustion chamber 111, the filter holes 1211 connect the air inlet surface 1213 with the outside, so the outside air collected on the air inlet surface 1213 enters the combustion chamber 111 through the filter holes 1211 on the air inlet surface 1213 and the opening at the bottom of the combustion chamber 111. In this process, the filter 121 also plays a role in disturbing the flow, thereby reducing air resistance and accelerating the flow rate of air into the combustion chamber 111, thereby providing sufficient oxygen for the combustion of the gas.

[0045] As mentioned above, the fan assembly 3 is arranged above the heat exchanger 2, and negative pressure is formed by the action of the fan assembly 3, thereby drawing the outside air into the combustion chamber 111 through the secondary air intake structure, and also drawing the high-temperature flue gas generated in the frame of the heat exchanger 2 upward, and exhausting the waste gas after heat exchange. It can be foreseen that: when the fan assembly 3 is fixed above the heat exchanger 2, negative pressure is formed by the action of the fan assembly 3, and an exhaust passage extending in the vertical direction is formed in the frame of the heat exchanger 2 and the corresponding position in the burner assembly 1.

[0046] Therefore, in the present application, when the filter hole 1211 is set on the air inlet surface 1213 at the bottom of the filter 121, the filter hole 1211 can be set in an area of ​​the air inlet surface 1213 that does not correspond to the above-mentioned exhaust channel, so that the outside air enters the burner assembly 1 from the area where the secondary air inlet structure is not connected to the above-mentioned exhaust channel.

[0047] Alternatively, the aperture of the filter hole 1211 on the air inlet surface 1213 corresponding to the above-mentioned exhaust channel is made smaller than the aperture of the filter hole 1211 in the area misaligned with the above-mentioned exhaust channel, thereby increasing the air flow in the area where the secondary air inlet structure is not connected to the exhaust channel and reducing the air flow in the area where the secondary air inlet structure is connected to the exhaust channel to a certain extent.

[0048] The fan assembly 3 then draws part of the air sucked into the area where the secondary air intake structure is not connected to the exhaust channel through suction through the exhaust channel, and guides it to the area where the secondary air intake structure is connected to the exhaust channel, thereby making the air flow distribution in the burner assembly 1 more uniform, thereby improving the uniformity of gas combustion in the burner assembly 1.

[0049] In this embodiment, a connecting plate 113 is provided at the bottom of two opposite side plates 112, so that the two connecting plates 113 are arranged at a relative interval. A slide groove 1131 with one end open is formed between the two connecting plates 113 and the two adjacent side plates 112, and slide rails 1221 extending outward are provided on opposite sides of the mounting plate 122. The two slide rails 1221 are respectively slidably plugged with the two slide grooves 1131, so that the mounting plate 122 can be connected to the bottom of the burner frame 11, thereby realizing the installation of the filter 12 at the bottom of the burner frame 11.

[0050] Correspondingly, the mounting plate 122 can be removed from the bottom of the burner frame 11 by sliding the two slide rails 1221 on the opposite sides of the mounting plate 122 out from the two slide grooves 1131 at the bottom of the burner frame 11, thereby realizing the removal of the filter element 12 at the bottom of the burner frame 11, thereby making the assembly of the burner assembly 1 simple and convenient, easy to implement, and improving production efficiency.

[0051] Specifically, in actual implementation, the burner frame 11 can be a rectangular structure surrounded by four side panels 112. Two connecting plates 113 are respectively arranged at the bottom of two opposite side panels 112, and a slide groove 1131 with one end open is formed between the two connecting plates 113 and the other two opposite side panels 112.

[0052] In addition, two inwardly extending limit plates 114 are respectively provided on the two opposite side plates 112. When the two slide rails 1221 on the opposite sides of the mounting plate 122 are respectively slidably connected with the two slide grooves 1131 at the bottom of the burner frame 11, the contact area between the slide grooves 1131 and the slide rails 1221 can be increased by the limit plates 114. On the one hand, it makes it easier to slide and connect the two slide rails 1221 with the two slide grooves 1131, thereby making the assembly of the burner assembly 1 simpler and more convenient, and improving the production efficiency; on the other hand, it makes the sliding connection between the two slide rails 1221 and the two slide grooves 1131 more stable, thereby making the overall structure of the burner assembly 1 more stable.

[0053] Furthermore, in this embodiment, a stop plate 1222 extending upward is provided on the mounting plate 122, two slide rails 1221 extend outward from opposite sides of the mounting plate 122, and the stop plate 1222 extends upward from the third side of the mounting plate 122. When the mounting plate 122 is connected to the bottom of the burner frame 11, the two slide rails 1221 on opposite sides of the mounting plate 122 are slidably plugged into the two slide grooves 1131 at the bottom of the burner frame 11, and the stop plate 1222 extending upward from the third side of the mounting plate 122 abuts against a side plate 112 of the burner frame 11, and the filter element 12 is installed in place at the bottom of the burner frame 11.

[0054] Therefore, the stop plate 1222 abuts against a side plate 112 of the burner frame 11, which not only guides the installation position of the filter 12 at the bottom of the burner frame 11, thereby making the assembly of the burner assembly 1 simple and convenient, but also limits the filter 12 installed at the bottom of the burner frame 11 to prevent the filter 12 from easily falling off at the bottom of the burner frame 11, thereby enhancing the stability of the overall structure of the burner assembly 1.

[0055] Furthermore, in the present embodiment, a through hole is provided on the stop plate 1222, a connecting hole is provided on the side plate 112 of the burner frame 11, and the filter 12 also includes a connecting member. When the two slide rails 1221 on the opposite sides of the mounting plate 122 are respectively slidably plugged into the two slide grooves 1131 at the bottom of the burner frame 11, and the stop plate 1222 extending upward from the third side of the mounting plate 122 abuts against the side plate 112 of the burner frame 11, one end of the connecting member passes through the through hole on the stop plate 1222 and is connected to the connecting hole on the side plate 112 of the burner frame 11, thereby fixing the stop plate 1222 and the side plate 112 of the burner frame 11, thereby achieving fixed installation of the filter 12 at the bottom of the burner frame 11, further preventing the filter 12 from easily falling off at the bottom of the burner frame 11, and enhancing the stability of the overall structure of the burner assembly 1.

[0056] When removing the filter 12 from the bottom of the burner frame 11, first disengage the connecting member from the connecting hole on the side plate 112 of the burner frame 11, and then slide the two slide rails 1221 on the opposite sides of the mounting plate 122 out of the two slide grooves 1131 at the bottom of the burner frame 11, and then remove the mounting plate 122 from the bottom of the burner frame 11. Specifically, in the present application, the connecting hole on the side plate 112 can be a threaded hole, and the connecting member is a screw or a bolt.

[0057] In the previous embodiment, it is mentioned that the burner assembly 1 is fixedly mounted on the bottom of the heat exchanger 2. Specifically, a peripheral edge is provided at the bottom of the frame of the heat exchanger 2, and the burner frame 11 further includes an abutment plate 115 and a bending plate 116, wherein the abutment plate 115 extends outwardly from the top of the two opposite side plates 112, and the bending plate 116 extends upwardly on the abutment plate 115.

[0058] When installing the burner frame 11 at the bottom of the heat exchanger 2 frame, first make the two abutment plates 115 abut against the bottom of the edge of the heat exchanger 2 frame, and then bend the bending plate 116 extending upward from the abutment plate 115, so that the bending plate 116 is bent from one side of the edge to the top of the edge, so that the burner frame 11 is fixed to the bottom of the heat exchanger 2 frame by abutting the bending plate 116 against one side and the top of the edge.

[0059] Furthermore, in actual implementation, bolts can be passed through the bending plate 116, the edge at the bottom of the heat exchanger 2 frame, and the abutment plate 115 in sequence, and then screwed together with nuts to further fix the burner frame 11 to the heat exchanger 2 frame, thereby enhancing the stability of the fixed connection between the burner frame 11 and the heat exchanger 2 frame.

[0060] Since in actual applications, the heat exchanger 2 frame needs to be used for heat transfer, in production, the heat exchanger 2 frame is usually made of copper with good thermal conductivity, and the abutment plate 115 and the bending plate 116 are used to connect the heat exchanger 2 frame and the burner assembly 1, and are usually made of stainless steel with high structural strength.

[0061] In the prior art, welding is usually used to connect the burner frame 11 and the heat exchanger 2 frame. Since the melting points of the copper heat exchanger 2 frame and the stainless steel abutment plate 115 and the bending plate 116 are quite different, problems such as rough welding points, damage to the surface of the copper heat exchanger 2 frame caused by the welding head, and uneven appearance of the welding position are prone to occur.

[0062] The contents described above can be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present utility model.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A burner assembly, characterized in that: The invention comprises a burner frame (11) and a filter (12), wherein the filter (12) is arranged at the bottom of the burner frame (11); the burner frame (11) comprises a plurality of side plates (112) which are connected in sequence and surround a circle, wherein the plurality of side plates (112) surround a circle to form a combustion chamber (111) with top and bottom openings, wherein the filter (12) is covered on the outside of the bottom opening of the combustion chamber (111), wherein the bottom opening of the combustion chamber (111) and the filter (12) form a secondary air intake structure, wherein the secondary air intake structure connects the combustion chamber (111) with the outside, and the outside air enters the combustion chamber (111) from the secondary air intake structure, and the filter (12) filters the outside air entering the combustion chamber (111).

2. A burner assembly as claimed in claim 1, characterized in that: The filter element (12) comprises a filter screen (121) which is arranged outside the bottom opening of the combustion chamber (111), and a mounting plate (122) which mounts the filter screen (121) on the bottom of the burner frame (11); the filter screen (121) is provided with a filter hole (1211) for allowing outside air to enter the combustion chamber (111); the filter hole (1211) filters the outside air entering the combustion chamber (111).

3. A burner assembly as claimed in claim 2, characterized in that: The cross-sectional area of ​​the filter screen (121) in the horizontal direction gradually increases from bottom to top.

4. A burner assembly as claimed in claim 2, characterized in that: The filter (121) comprises a plurality of closed surfaces (1212) which are arranged in a circle, and an air inlet surface (1213) which is arranged at the bottom of the plurality of closed surfaces (1212); the mounting plate (122) is arranged at the top of the plurality of closed surfaces (1212); the plurality of closed surfaces (1212) are used to guide outside air to the air inlet surface (1213); the air inlet surface (1213) is connected to the bottom opening of the combustion chamber (111); the filter hole (1211) is arranged on the air inlet surface (1213) to connect the air inlet surface (1213) with the outside; the outside air collected at the air inlet surface (1213) enters the combustion chamber (111) from the filter hole (1211), so as to reduce the air resistance of the outside air entering the combustion chamber (111).

5. A burner assembly as claimed in claim 2, characterized in that: A connecting plate (113) is provided at the bottom of the two opposite side plates (112), and the connecting plate (113) and the bottom of the two adjacent side plates (112) form a slide groove (1131) with one end open. A slide rail (1221) extends outward from the mounting plate (122), and the slide rail (1221) is slidably inserted into the slide groove (1131).

6. A burner assembly as claimed in claim 5, characterized in that: The bottoms of the two side plates (112) adjacent to the connecting plate (113) extend inwardly with limiting plates (114), and when the slide rail (1221) is slidably inserted into the slide groove (1131), the limiting plates (114) abut against the mounting plate (122).

7. A burner assembly as claimed in claim 5, characterized in that: The mounting plate (122) is extended upward with a stop plate (1222), the slide rail (1221) and the slide groove (1131) are slidably plugged into each other, and the stop plate (1222) abuts against a side plate (112) adjacent to the connecting plate (113) to limit the sliding plugging of the slide rail (1221) and the slide groove (1131).

8. A burner assembly as claimed in claim 7, characterized in that: The stop plate (1222) is provided with a through hole, a side plate (112) adjacent to the connecting plate (113) is provided with a connecting hole, and the filter element (12) further comprises a connecting element with one end passing through the through hole and connected to the connecting hole.

9. A burner assembly as claimed in claim 1, characterized in that: The burner frame (11) further comprises an abutment plate (115) extending outward from the top of the two side plates (112), and a bending plate (116) extending upward from the abutment plate (115); a peripheral edge is provided at the bottom of the heat exchanger (2) frame, the abutment plate (115) abuts against the bottom of the peripheral edge, and the bending plate (116) abuts against one side and the top of the peripheral edge.

10. A gas water heater, characterized in that: Comprising a burner assembly according to any one of claims 1-9.

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