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 internally provided with a combustion cavity and a filtering piece installed on the combustor frame, the combustion cavity is used for gas combustion to generate flames, a secondary air inlet is formed in the combustor frame, the combustion cavity communicates with the outside through the secondary air inlet, and external air enters the combustion cavity through the secondary air inlet; the filter part is used for filtering outside air entering the combustion cavity, and the filter part is detachably assembled on the combustor frame. According to the combustor assembly, the filtering piece is arranged on the combustor shell, external impurities are filtered through the filtering piece, the external impurities can be prevented from entering the combustor assembly, and therefore the overall combustion stability of the combustor assembly is improved; due to the fact that the filter part is detachably assembled on the combustor frame body, the combustor assembly is easy and convenient to assemble and easy to implement, and the production efficiency is improved.

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, which hinders the combustion of the gas and easily leads to unstable combustion, thereby affecting the heat exchange efficiency of the combustion heat exchange system. At the same time, how to make the assembly of the burner assembly simpler and more convenient and improve production efficiency is also a problem that needs 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 make the assembly of the burner assembly simple and convenient, easy to implement, thereby improving production efficiency.

[0006] The utility model proposes a burner assembly, comprising a burner frame with a combustion chamber therein, and a filter element installed on the burner frame, wherein the combustion chamber is used for combustion of gas to generate flames, a secondary air inlet is provided on the burner frame, the secondary air inlet connects the combustion chamber with the outside world to allow outside air to enter the combustion chamber, the filter element is used for filtering the outside air entering the combustion chamber, and the filter element is detachably assembled on the burner frame.

[0007] Furthermore, the filter element includes a filter screen covered on the outside of the secondary air inlet, and a mounting plate for mounting the filter screen on the burner frame, the filter screen is provided with filter holes for filtering the outside air entering the combustion chamber, and the mounting plate is detachably assembled on the burner frame.

[0008] Furthermore, the filter element also includes two slide rails extending outward from opposite sides of the mounting plate, and two connecting plates are relatively spaced apart on the burner frame. The two connecting plates respectively form two slide grooves with one end open with the burner frame, and the two slide rails are respectively slidably inserted into the two slide grooves.

[0009] Furthermore, a plug-in plate extending downward is provided on the slide rail, and a plug-in groove is provided at the bottom of the slide groove. When the slide rail is slidably plugged into the slide groove, the plug-in plate is slidably plugged into the plug-in groove.

[0010] Furthermore, the filter element also includes a stop flange extending upward from the third side of the mounting plate, and when the slide rail and the slide groove are slidably inserted, the stop flange abuts against the side of the burner frame to limit the connection between the mounting plate and the burner frame.

[0011] Furthermore, a through hole is provided on the stop flange, a connecting hole is provided on the side of the burner frame, and the filter element further comprises a connecting element with one end passing through the through hole and connected to the connecting hole.

[0012] Furthermore, the burner frame includes a plurality of side panels connected in sequence to form a circle, and a bottom plate arranged at the bottom of the plurality of side panels, the plurality of side panels and the bottom plate form a combustion chamber with a top opening, the top opening of the combustion chamber is a flame outlet channel, the secondary air inlet is arranged on the bottom plate, and the filter element is installed on the bottom plate.

[0013] Furthermore, the mounting plate surrounds the outer side of the filter screen, and the mounting plate is connected to the bottom plate to mount the filter screen on the bottom plate. The mounting plate and the bottom plate are detachable.

[0014] Furthermore, a connecting plate for connecting to a heat exchanger is provided on the top of the side plate, and the connecting plate and the heat exchanger are detachably assembled.

[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) A filter is provided on the burner frame of the burner assembly, and the filter cover is provided on the outside of the secondary air inlet. Therefore, under the action of the fan, when the outside air enters the combustion chamber through the secondary air inlet, 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;

[0018] (2) The filter element of the burner assembly is detachable from the burner frame. Therefore, when assembling the burner assembly, the filter element and the burner frame can be assembled separately, and then the filter element can be installed on the burner frame. This not only makes the assembly of the burner assembly simple and convenient, easy to implement, and improves production efficiency, but also makes the maintenance and replacement of the filter element more convenient, thereby enhancing the practicality of the burner assembly.

[0019] (3) The filter element of the burner assembly includes a filter screen and a mounting plate, which is connected to the bottom plate at the bottom of the burner frame through the mounting plate, so that the filter screen cover is arranged outside the secondary air inlet arranged on the bottom plate, and the filter screen is provided with filter holes, which block large particles of impurities in the outside air, thereby preventing the impurities from the outside 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 burner assembly can be connected to the bottom plate of the burner frame by sliding the two slide rails on the two opposite sides of the mounting plate into the two slide grooves at the bottom of the burner frame, thereby realizing the installation of the filter at the bottom of the burner frame, thereby making the assembly of the burner assembly simple and convenient, easy to implement, and thus improving production efficiency;

[0021] (5) A plug-in plate extending downward is provided on the slide rail of the burner assembly, and a plug-in groove is provided at the bottom of the slide groove. When the slide rail and the slide groove are slidably plugged, the plug-in plate extending downward on the slide rail is slidably plugged into the plug-in groove at the bottom of the slide groove, so that the connection between the mounting plate and the bottom plate of the burner frame is more stable through the cooperation between the plug-in plate and the plug-in groove, thereby enhancing the stability of the overall structure of the burner assembly;

[0022] (6) The filter element of the burner assembly also includes a stop flange extending upward from the mounting plate, which abuts against a side plate of the burner frame through the stop flange, thereby not only guiding the installation position of the filter element at the bottom of the burner frame, thereby making the assembly of the burner assembly simple and convenient, but also limiting the filter element installed at the bottom of the burner frame, preventing the filter element from easily falling off at the bottom of the burner frame, thereby enhancing the stability of the overall structure of the burner assembly. 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 structural diagram of a filter element of a burner assembly according to an embodiment of the utility model installed at the bottom of a burner frame;

[0026] Figure 3 This is a schematic structural diagram of a burner frame 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; 1122. second connecting plate; 113. bottom plate; 1131. secondary air inlet; 114. first connecting plate; 1141. slide groove; 1142. plug-in groove; 12. filter element; 121. filter screen; 1211. filter hole; 122. mounting plate; 123. slide rail; 1231. plug-in plate; 124. stop flange; 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 comprises a burner frame 11 having a combustion chamber 111 therein, and a filter element 12 mounted on the burner frame 11, wherein the combustion chamber 111 is used for combustion of gas to generate flames, a secondary air inlet 1131 is arranged on the burner frame 11, and the secondary air inlet 1131 connects the combustion chamber 111 with the outside world to allow outside air to enter the combustion chamber 111, and the filter element 12 is used for filtering the outside air entering the combustion chamber 111, and the filter element 12 is detachably mounted on the burner frame 11.

[0032] In the present application, the burner assembly 1 includes a burner frame 11 and a filter 12, and a combustion chamber 111 is provided in the burner frame 11. It is foreseeable that: a primary air inlet 1121 is provided on one side of the burner frame 11, and the burner assembly 1 also includes an air intake pipe 13, the primary air inlet 1121 connects one side of the combustion chamber 111 with the outside, 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] A secondary air inlet 1131 is also provided on the burner frame 11, and the secondary air inlet 1131 connects the bottom of the combustion chamber 111 with the outside, so that the outside air can enter the combustion chamber 111 through the secondary air inlet 1131. 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 1131, 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. A flame outlet channel is provided at the top of the combustion chamber 111 to connect the combustion chamber 111 with the outside, 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, which is arranged above the heat exchanger 2. The fan assembly 3 forms a negative pressure through the action of the fan assembly 3, thereby drawing the outside air into the combustion chamber 111 through the secondary air inlet 1131, 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] Since in the present application, a filter element 12 is provided on the burner frame 11, and the filter element 12 cover is arranged on the outside of the secondary air inlet 1131, therefore, under the action of the fan assembly 3, when the outside air enters the combustion chamber 111 through the secondary air inlet 1131, 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.

[0038] Furthermore, in the present application, since the filter element 12 is detachably assembled on the burner frame 11, when assembling the burner assembly 1, the filter element 12 and the burner frame 11 can be produced and assembled separately, and then the filter element 12 can be installed on the burner frame 11. This not only makes the assembly of the burner assembly 1 simple and convenient, easy to implement, and improves production efficiency, but also makes the maintenance and replacement of the filter element 12 more convenient, thereby enhancing the practicality of the burner assembly 1.

[0039] In this embodiment, the burner frame 11 includes a plurality of side panels 112 and a bottom panel 113. The plurality of side panels 112 are connected in sequence to form a circle. The bottom panel 113 is arranged at the bottom of the plurality of side panels 112, so that the plurality of side panels 112 and the bottom panel 113 form a combustion chamber 111 with a top opening. The top opening of the combustion chamber 111 is the flame outlet channel.

[0040] The primary air inlet 1121 is set on one of the side panels 112 and connected to the side panel 112 through the air intake pipe 13. The primary air inlet 1121 is connected to the gas supply component so that the gas provided by the gas supply component flows through the air intake pipe 13 and enters the combustion chamber 111 through the primary air inlet 1121.

[0041] Specifically, in this embodiment, the secondary air inlet 1131 can be set on one of the side panels 112, that is, the filter 12 is set on one side of the burner frame 11, so that the filter 12 cover is set outside the secondary air inlet 1131; the secondary air inlet 1131 can also be set on the bottom plate 113, that is, the filter 12 is set at the bottom of the burner frame 11, so that the filter 12 cover is set outside the secondary air inlet 1131, which can be determined according to actual production needs. In the following, the secondary air inlet 1131 is set on the bottom plate 113 and the filter 12 is set at the bottom of the burner frame 11 as an example for explanation.

[0042] The secondary air inlet 1131 is set on the bottom plate 113, and the filter element 12 is installed on the bottom plate 113, so that the filter element 12 cover is set on the outside of the secondary air inlet 1131, so that when the external air enters the combustion chamber 111 through the secondary air inlet 1131, the filter element 12 filters the external impurities.

[0043] Furthermore, in this embodiment, a second connecting plate 1122 is provided on the top of the side plate 112, and the burner frame 11 is connected to the heat exchanger 2 frame by connecting the second connecting plate 1122 to the heat exchanger 2 frame, thereby realizing the connection between the burner frame 11 and the heat exchanger 2 frame, and then realizing the installation of the burner assembly 1 at the bottom of the heat exchanger 2.

[0044] In the present application, the second connecting plate 1122 is detachably assembled with the frame of the heat exchanger 2, so the burner assembly 1 can be installed and disassembled at the bottom of the heat exchanger 2 by connecting and disassembling the second connecting plate 1122 with the frame of the heat exchanger 2, thereby facilitating the maintenance and replacement of the burner assembly 1 on the heat exchanger 2, thereby improving the practicality of the burner assembly 1. Specifically, the second connecting plate 1122 can be detachably connected with the frame of the heat exchanger 2 by means of a snap or screw connection.

[0045] Specifically, in this embodiment, the second connecting plate 1122 includes an abutting portion and a limiting portion, wherein the abutting portion extends horizontally on the side plate 112, and the limiting portion extends vertically on the abutting portion. When the second connecting plate 1122 is connected to the frame of the heat exchanger 2, the abutting portion abuts against the bottom of the frame of the heat exchanger 2, and the limiting portion cooperates with the frame of the heat exchanger 2 on both sides, and the installation position of the second connecting plate 1122 at the bottom of the frame of the heat exchanger 2 is limited, so that the flame outlet channel at the top of the combustion chamber 111 is aligned with the center position of the frame of the heat exchanger 2, and then the flame formed in the combustion chamber 111 passes through the flame outlet channel, and the air in the frame of the heat exchanger 2 is evenly heated, thereby improving the heating efficiency of the gas water heater.

[0046] In this embodiment, the filter element 12 includes a filter screen 121 covering the outside of the secondary air inlet 1131, and a mounting plate 122 for mounting the filter screen 121 on the bottom of the burner frame 11, and the filter screen 121 is provided with a filter hole 1211 for filtering air. 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 plate 113 at the bottom of the burner frame 11, so that the filter screen 121 is covered on the outside of the secondary air inlet 1131 provided on the bottom plate 113.

[0047] A filter hole 1211 is provided on the filter screen 121. When the fan assembly 3 draws external air into the combustion chamber 111 through the secondary air inlet 1131, the filter hole 1211 blocks large particles of impurities in the external air, thereby preventing 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.

[0048] In this embodiment, the mounting plate 122 is connected to the base plate 113 at the bottom of the burner frame 11, so that when the filter 121 is covered on the outside of the secondary air inlet 1131 set on the base plate 113, the filter 121 completely covers the secondary air inlet 1131 on the base plate 113. Therefore, when the outside air enters the combustion chamber 111 through the secondary air inlet 1131, it needs to pass through the filter 121 first, so that the filter holes 1211 on the filter 121 can filter the large particles of impurities in the outside air, further improving the overall combustion stability of the burner assembly 1 and ensuring that the gas is fully burned in the burner assembly 1.

[0049] In this embodiment, the mounting plate 122 surrounds the outer side of the filter 121. When the filter element 12 is installed at the bottom of the burner frame 11, the mounting plate 122 surrounding the outer side of the filter 121 is simultaneously connected to the bottom plate 113 of the burner frame 11, thereby enhancing the stability of the filter element 12 installed at the bottom of the burner frame 11, and further enhancing the overall stability of the burner assembly 1.

[0050] In this embodiment, the filter element 12 further includes two slide rails 123 extending outward from both sides of the mounting plate 122, and two first connecting plates 114 are relatively spaced apart at the bottom of the burner frame 11, and the two first connecting plates 114 respectively form a slide groove 1141 with one end open with the burner frame 11, and the slide rail 123 is slidably inserted into the slide groove 1141. In the present application, the filter element 12 further includes two slide rails 123, and the two slide rails 123 extend outward from the opposite sides of the mounting plate 122. Two first connecting plates 114 are relatively spaced apart on the bottom plate 113 of the burner frame 11, and two slide grooves 1141 are formed between the two first connecting plates 114 and the bottom plate 113, and one side end of the two slide grooves 1141 is open.

[0051] Therefore, the two slide rails 123 on the opposite sides of the mounting plate 122 are slidably plugged into the two slide grooves 1141 at the bottom of the burner frame 11, so that the mounting plate 122 can be connected to the bottom plate 113 of the burner frame 11, thereby realizing the installation of the filter element 12 at the bottom of the burner frame 11.

[0052] Correspondingly, the mounting plate 122 can be removed from the bottom plate 113 of the burner frame 11 by sliding the two slide rails 123 on the opposite sides of the mounting plate 122 out from the two slide grooves 1141 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 thus improving production efficiency.

[0053] Furthermore, in this embodiment, a plug-in plate 1231 extending downward is provided on the slide rail 123, and a plug-in groove 1142 is provided at the bottom of the slide groove 1141. When the slide rail 123 and the slide groove 1141 are slidably plugged into each other, the plug-in plate 1231 extending downward on the slide rail 123 is slidably plugged into the plug-in groove 1142 at the bottom of the slide groove 1141, so that the connection between the mounting plate 122 and the bottom plate 113 of the burner frame 11 is made more stably through the cooperation between the plug-in plate 1231 and the plug-in groove 1142, thereby enhancing the stability of the overall structure of the burner assembly 1.

[0054] Correspondingly, when the two slide rails 123 on both sides of the mounting plate 122 are slid out of the two slide grooves 1141 at the bottom of the burner frame 11 respectively, the plug-in plate 1231 is slid out of the plug-in groove 1142, thereby removing the mounting plate 122 from the bottom plate 113 of the burner frame 11.

[0055] Furthermore, in this embodiment, the filter element 12 further includes a stop flange 124 extending upward from the mounting plate 122, and when the slide rail 123 is slidably plugged into the slide groove 1141, the stop flange 124 abuts against the side of the burner frame 11 to limit the connection between the mounting plate 122 and the burner frame 11. In the present application, the filter element 12 further includes a stop flange 124, and the two slide rails 123 extend outward from opposite sides of the mounting plate 122, respectively, and the stop flange 124 extends upward from the third side of the mounting plate 122.

[0056] When connecting the mounting plate 122 to the base plate 113 at the bottom of the burner frame 11, the two slide rails 123 on the opposite sides of the mounting plate 122 are slidably inserted into the two slide grooves 1141 at the bottom of the burner frame 11, respectively, and the stop flange 124 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.

[0057] Therefore, the stop flange 124 abuts against the 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, preventing 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.

[0058] Furthermore, in the present embodiment, the stop flange 124 is provided with a through hole, the side plate 112 of the burner frame 11 is provided with a connecting hole, and the filter 12 also includes a connecting member. When the two slide rails 123 on the opposite sides of the mounting plate 122 are respectively slidably plugged into the two slide grooves 1141 at the bottom of the burner frame 11, and the stop flange 124 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 flange 124 and is connected to the connecting hole on the side plate 112 of the burner frame 11, thereby fixing the stop flange 124 to the side plate 112 of the burner frame 11, thereby achieving the fixing 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.

[0059] 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 123 on the opposite sides of the mounting plate 122 out of the two slide grooves 1141 at the bottom of the burner frame 11, and then remove the mounting plate 122 from the bottom plate 113 of the burner frame 11. Specifically, in the present application, the connecting hole on the side plate 112 of the burner frame 11 can be a threaded hole, and the connecting member is a screw or a bolt.

[0060] 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.

[0061] 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.

[0062] 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) having a combustion chamber (111) therein, and a filter element (12) mounted on the burner frame (11); the combustion chamber (111) is used for combustion of gas to generate flames; a secondary air inlet (1131) is provided on the burner frame (11); the secondary air inlet (1131) connects the combustion chamber (111) with the outside world to allow outside air to enter the combustion chamber (111); the filter element (12) is used for filtering the outside air entering the combustion chamber (111); and the filter element (12) is detachably mounted on the burner frame (11).

2. A burner assembly as claimed in claim 1, characterized in that: The filter element (12) comprises a filter screen (121) which is covered on the outside of the secondary air inlet (1131), and a mounting plate (122) for mounting the filter screen (121) on the burner frame (11); the filter screen (121) is provided with filter holes (1211) for filtering external air entering the combustion chamber (111); and the mounting plate (122) is detachably mounted on the burner frame (11).

3. A burner assembly as claimed in claim 2, characterized in that: The filter element (12) further comprises two slide rails (123) extending outwardly from opposite sides of the mounting plate (122); two first connecting plates (114) are arranged on the burner frame (11) at a relatively spaced interval; the two first connecting plates (114) respectively form two slide grooves (1141) with one end open with the burner frame (11); and the two slide rails (123) are respectively slidably inserted into the two slide grooves (1141).

4. A burner assembly as claimed in claim 3, characterized in that: The slide rail (123) is provided with a plug-in plate (1231) extending downwards, and the bottom of the slide groove (1141) is provided with a plug-in groove (1142). When the slide rail (123) and the slide groove (1141) are slidably plugged, the plug-in plate (1231) is slidably plugged into the plug-in groove (1142).

5. A burner assembly as claimed in claim 3, characterized in that: The filter element (12) further comprises a stop flange (124) extending upward from the third side of the mounting plate (122); when the slide rail (123) and the slide groove (1141) are slidably connected, the stop flange (124) abuts against the side surface of the burner frame (11) to limit the connection between the mounting plate (122) and the burner frame (11).

6. A burner assembly as claimed in claim 5, characterized in that: A through hole is provided on the stop flange (124), a connecting hole is provided on the side of the burner frame (11), and the filter (12) further comprises a connecting piece with one end passing through the through hole and connected to the connecting hole.

7. A burner assembly as claimed in claim 2, characterized in that: The burner frame (11) comprises a plurality of side plates (112) connected in sequence to form a circle, and a bottom plate (113) arranged at the bottom of the plurality of side plates (112); the plurality of side plates (112) and the bottom plate (113) form a combustion chamber (111) with a top opening; the top opening of the combustion chamber (111) is a flame outlet channel; the secondary air inlet (1131) is arranged on the bottom plate (113); and the filter element (12) is mounted on the bottom plate (113).

8. A burner assembly as claimed in claim 7, characterized in that: The mounting plate (122) surrounds the outer side of the filter screen (121), and the mounting plate (122) is connected to the bottom plate (113) for mounting the filter screen (121) on the bottom plate (113). The mounting plate (122) and the bottom plate (113) are detachable.

9. A burner assembly as claimed in claim 8, characterized in that: A second connecting plate (1122) for connecting to a heat exchanger is provided on the top of the side plate (112), and the second connecting plate (1122) and the heat exchanger are detachably assembled.

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

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