Combustor

Abstract

The utility model belongs to the technical field of combustors, and discloses a combustor which comprises a gas distribution structure and a shell. The gas distribution structure comprises a gas circulation cavity, a plurality of first gas flow channels and a plurality of second gas flow channels, one ends of the first gas flow channels communicate with the gas circulation cavity, the other ends of the first gas flow channels are used for communicating with the combustion chamber, the second gas flow channels penetrate through the gas distribution structure, and one ends of the second gas flow channels are used for communicating with the combustion chamber; the gas distribution structure is installed in the shell, the shell comprises a combustion-supporting gas cavity surrounding the periphery of the gas distribution structure and a gas conveying structure, one of the combustion-supporting gas cavity and the gas conveying structure communicates with the gas circulation cavity, and the other one of the combustion-supporting gas cavity and the gas conveying structure communicates with the other ends of the second gas flow channels. Combustion-supporting gas and fuel gas of the combustor can be introduced into the combustion chamber and then mixed, the explosion risk caused by premixed gas is effectively avoided, the combustion-supporting gas is used for replacing a traditional heat preservation and insulation material layer, and the size and weight of the combustor are reduced.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, and in particular to a burner. Background Technology

[0002] A premixed burner refers to a burner in which air and fuel gas are premixed in a mixing chamber before entering the combustion zone, and the mixture is ignited when it enters the combustion zone. Because the mixture is flammable and explosive in a high-temperature environment, a thick layer of thermal insulation material needs to be wrapped around the mixing chamber to prevent backfire. This increases the size and weight of the burner, which is not conducive to improving burner power and maintenance, and still poses a significant risk of backfire.

[0003] Therefore, there is an urgent need to develop a burner to solve the above-mentioned technical problems. Utility Model Content

[0004] This invention provides a burner in which the combustion-supporting gas and the combustion gas can be introduced into the combustion chamber separately, eliminating the need for premixed gas and effectively avoiding the risk of explosion caused by premixed gas. Furthermore, by using the combustion-supporting gas instead of the traditional thermal insulation material layer, the volume and weight of the burner are reduced.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The burner includes:

[0007] The gas distribution structure includes a gas flow chamber, multiple first gas flow channels, and multiple second gas flow channels. One end of each of the multiple first gas flow channels is connected to the gas flow chamber, and the other end is used to connect to the combustion chamber. The multiple second gas flow channels penetrate the gas distribution structure, and one end of each of the multiple second gas flow channels is used to connect to the combustion chamber.

[0008] The housing includes a gas distribution structure installed inside the housing. The housing includes a combustion-supporting chamber surrounding the outer periphery of the gas distribution structure and a gas delivery structure. One of the combustion-supporting chamber and the gas delivery structure is connected to the gas flow chamber, and the other is connected to the other end of a plurality of second gas flow channels.

[0009] Optionally, the combustion chamber includes a first combustion chamber and a second combustion chamber, the first combustion chamber being wrapped around the outer periphery of the second combustion chamber; the first combustion chamber is connected to the second combustion chamber, the second combustion chamber is connected to the gas flow chamber, or the second combustion chamber is connected to the other end of a plurality of second gas flow channels.

[0010] Optionally, the housing further includes:

[0011] The inner shell contains the gas distribution structure installed inside it. The gas distribution structure and the inner peripheral wall of the inner shell form a gas chamber. The gas chamber is connected to the other end of the multiple second gas flow channels. The gas chamber is the gas delivery structure.

[0012] An outer shell is fitted over the inner shell, and the outer shell and the inner shell together form the combustion-supporting chamber;

[0013] The gas delivery pipeline has one end connected to the gas flow chamber and the other end connected to the combustion-supporting chamber.

[0014] Optionally, the outer shell includes a first outer shell and a second outer shell. The second outer shell is fitted outside the inner shell and forms a second combustion chamber with the inner shell. The first outer shell is fitted outside the second outer shell and forms a first combustion chamber with the second outer shell. The first combustion chamber is provided with a combustion inlet at one end near the combustion chamber, and the second outer shell is provided with an air inlet at one end away from the combustion chamber. The air inlet is used to connect the first combustion chamber and the second combustion chamber.

[0015] Optionally, the housing further includes:

[0016] The inner shell contains the gas distribution structure installed inside it and forming a gas chamber with the bottom wall of the inner shell. The gas chamber is connected to the other end of the multiple second gas flow channels. The gas chamber is the gas delivery structure. The combustion chamber is provided inside the inner shell and is located above the gas distribution structure. An air inlet is provided on the side wall of the inner shell near the combustion chamber.

[0017] An isolation hood is installed outside the combustion chamber and has a first gap between it and the side wall of the inner shell. The gas distribution structure has a second gap between it and the side wall of the inner shell, which communicates with the first gap. The second gap communicates with the gas flow chamber.

[0018] The outer shell is fitted over the inner shell and forms a combustion-supporting chamber with the side walls and bottom walls of the inner shell. The combustion-supporting gas in the combustion-supporting chamber enters the first gap through the air inlet and then enters the gas flow chamber through the second gap.

[0019] Optionally, the second gas flow channel is provided with a plurality of the first gas flow channels in the circumferential direction.

[0020] Optionally, the gas flow chamber includes multiple first gas flow paths arranged parallel to each other along a first direction, and both ends of each first gas flow path are connected to the combustion-supporting chamber through a gas delivery pipe.

[0021] Optionally, the gas flow chamber further includes multiple second gas flow paths arranged parallel to each other along the second direction. Each of the two ends of each second gas flow path is connected to the combustion-supporting chamber through a gas delivery pipe. The second direction is perpendicular to the first direction.

[0022] Optionally, the housing further includes an outer shell, the gas distribution structure is installed inside the outer shell, the gas distribution structure and the inner peripheral wall of the outer shell form the combustion-supporting chamber, the gas delivery structure is a gas delivery pipe, one end of the gas delivery pipe is connected to the gas flow chamber, and the other end extends out of the outer shell and is connected to the gas source.

[0023] Optionally, the housing further includes an inner housing disposed within the outer housing. The outer housing and the inner housing together form a first combustion chamber. The gas distribution structure is installed within the inner housing. The gas distribution structure and the inner peripheral wall of the inner housing together form a second combustion chamber. An air inlet is provided at one end of the inner housing near the combustion chamber. The air inlet is used to connect the second combustion chamber and the first combustion chamber.

[0024] Optionally, the gas distribution structure further includes:

[0025] The cover has a plurality of first combustion-supporting holes arranged in a row on its bottom plate;

[0026] Multiple gas distribution blocks are provided, and the multiple gas distribution blocks are arranged in parallel and spaced on the base plate. Each gas distribution block is provided with multiple second gas-supporting holes spaced along its own length direction. The second gas-supporting holes are arranged in a one-to-one correspondence with the first gas-supporting holes. A third gas flow path is formed between two adjacent gas distribution blocks.

[0027] A gas distribution plate is disposed on the gas distribution block. The gas distribution plate and the bottom plate form the gas flow cavity. The gas distribution plate is provided with a third gas-supporting hole corresponding to the second gas-supporting hole, and a gas hole group corresponding to the third gas flow path. Each gas hole group includes a plurality of first gas holes.

[0028] An exhaust block is disposed on the gas distribution plate. The exhaust block is provided with a fourth gas-supporting hole corresponding to the third gas-supporting hole and a second gas-supporting hole corresponding to the first gas-supporting hole. The first gas-supporting hole and the second gas-supporting hole are connected to form the first gas flow channel. The first gas-supporting hole, the second gas-supporting hole, the third gas-supporting hole and the fourth gas-supporting hole are interconnected to form the second gas flow channel.

[0029] Optionally, the middle parts of the plurality of air distribution blocks are connected by connecting ribs to form a double-sided symmetrical comb-like structure.

[0030] Optionally, the gas distribution structure further includes:

[0031] The cover has a plurality of first combustion-supporting holes arranged in a row on its bottom plate;

[0032] An exhaust block is disposed at the opening of the cover. The exhaust block and the cover form the gas flow cavity. The exhaust block is provided with a fourth combustion-supporting hole corresponding to the first combustion-supporting hole and a plurality of first gas flow channels.

[0033] The gas-supporting pipe has one end connected to the first gas-supporting hole and the other end connected to the fourth gas-supporting hole. The first gas-supporting hole, the gas-supporting pipe, and the fourth gas-supporting hole form the second gas flow channel.

[0034] Optionally, the top of the gas distribution structure is provided with a first groove, which is the combustion chamber.

[0035] Optionally, the combustion chamber is provided with a porous combustion element, and the fuel gas and combustion-supporting gas from the gas distribution structure will enter the combustion element.

[0036] Optionally, the combustion element has a second groove on the side near the gas distribution structure. The second groove and the gas distribution structure form an airflow buffer zone, in which the combustion gas and the auxiliary combustion gas are mixed and then enter the combustion element.

[0037] The beneficial effects of this utility model are:

[0038] This invention provides a burner, including a gas distribution structure and a shell. The gas distribution structure allows for the separate introduction of oxidizing gas and combustion gas into the combustion chamber, meaning that the oxidizing gas and combustion gas are not premixed before entering the combustion chamber, thus avoiding backfire and explosion caused by the presence of premixed gases. Furthermore, an oxidizing gas chamber surrounding the gas distribution structure is provided within the shell. On one hand, the low-temperature oxidizing gas cools the shell, preventing high temperatures inside the burner; on the other hand, the burner preheats the oxidizing gas, ensuring that the oxidizing gas and combustion gas have a certain base temperature after mixing in the combustion chamber, making the mixture easier to ignite and decompose, thus promoting complete combustion. Moreover, the low-temperature oxidizing gas in the oxidizing gas chamber replaces the traditional thermal insulation material layer of the burner, saving material costs and reducing the size and weight of the burner. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0040] Figure 1 This is a cross-sectional view of a burner provided in Embodiment 1 of this utility model. Figure 1 ;

[0041] Figure 2 This is a cross-sectional view of a burner provided in Embodiment 1 of this utility model. Figure 2 ;

[0042] Figure 3 This is a cross-sectional view of a burner provided in Embodiment 1 of this utility model. Figure 3 ;

[0043] Figure 4 This is a cross-sectional view of another burner provided in Embodiment 1 of this utility model;

[0044] Figure 5 This is a schematic diagram of the gas distribution structure provided in Embodiment 2 of this utility model;

[0045] Figure 6 This is a bottom view of the gas distribution structure provided in Embodiment 2 of this utility model;

[0046] Figure 7 This is a cross-sectional view of the gas distribution structure provided in Embodiment 2 of this utility model;

[0047] Figure 8 This is a cross-sectional view of the burner provided in Embodiment 2 of this utility model;

[0048] Figure 9 This is a cross-sectional view of the burner provided in Embodiment 3 of this utility model. Figure 1 ;

[0049] Figure 10 This is a cross-sectional view of the burner provided in Embodiment 3 of this utility model. Figure 2 ;

[0050] Figure 11 This is a schematic diagram of the gas distribution structure from one perspective, provided in Embodiment 3 of this utility model;

[0051] Figure 12 This is a schematic diagram of the gas distribution structure from another perspective provided in Embodiment 3 of this utility model;

[0052] Figure 13This is an exploded view of the gas distribution structure provided in Embodiment 3 of this utility model;

[0053] Figure 14 This is a schematic diagram of multiple gas distribution blocks provided in Embodiment 3 of this utility model;

[0054] Figure 15 This is a cross-sectional view of the gas distribution structure provided in Embodiment 3 of this utility model;

[0055] Figure 16 This is a cross-sectional view of the burner provided in Embodiment 4 of this utility model. Figure 1 ;

[0056] Figure 17 This is a cross-sectional view of the burner provided in Embodiment 4 of this utility model. Figure 2 .

[0057] In the picture:

[0058] 100. Gas distribution structure; 101. Cover; 1011. Base plate; 10111. First combustion-supporting hole; 102. Gas distribution block; 1021. Second combustion-supporting hole; 1022. Third gas flow path; 103. Gas distribution plate; 1031. Third combustion-supporting hole; 1032. First combustion hole; 104. Gas outlet block; 1041. Fourth combustion-supporting hole; 1042. Second combustion hole; 105. Combustion-supporting pipe; 106. Connecting rib; 110. Gas flow cavity; 111. First gas flow path; 112. Second gas flow path; 120. First gas channel; 130. Second gas channel; 140. First groove;

[0059] 200, Shell; 201, Combustion-supporting chamber; 2001, First combustion-supporting chamber; 2002, Second combustion-supporting chamber; 2011, Combustion-supporting inlet; 2012, First gap; 2013, Second gap; 202, Combustion chamber; 2021, Combustion inlet; 210, Outer shell; 211, First outer shell; 212, Second outer shell; 220, Inner shell; 221, Air inlet; 230, Gas delivery pipeline; 240, External pipeline; 250, Combustion delivery pipe;

[0060] 300. Combustion component; 310. Second groove;

[0061] 400. Fasteners;

[0062] 500, isolation shield. Detailed Implementation

[0063] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0064] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0067] Example 1

[0068] This embodiment provides a burner in which the combustion-supporting gas and the combustion gas can be introduced into the combustion chamber separately and then mixed. There is no premixed gas, which effectively avoids the risk of explosion caused by premixed gas. Furthermore, by using the combustion-supporting gas instead of the traditional thermal insulation material layer, the volume and weight of the burner are reduced.

[0069] Specifically, such as Figures 1-3As shown, the burner includes a gas distribution structure 100 and a housing 200. The gas distribution structure 100 includes a gas flow chamber 110, multiple first gas flow channels 120, and multiple second gas flow channels 130. One end of each of the multiple first gas flow channels 120 communicates with the gas flow chamber 110, and the other end communicates with the combustion chamber; that is, gas entering the gas flow chamber 110 can enter the combustion chamber through the first gas flow channels 120 to participate in combustion. The multiple second gas flow channels 130 penetrate the gas distribution structure 100, and one end of each second gas flow channel 130 communicates with the combustion chamber; that is, gas entering through the other end of the second gas flow channel 130 can ultimately enter the combustion chamber to participate in combustion. The gas distribution structure 100 is installed inside the housing 200. The housing 200 includes a combustion-supporting chamber 201 surrounding the outer periphery of the gas distribution structure 100 and a gas delivery structure. One of the combustion-supporting chamber 201 and the gas delivery structure communicates with the gas flow chamber 110, and the other communicates with the other end of each of the multiple second gas flow channels 130.

[0070] The burner provided in this embodiment allows for the separate introduction of fuel gas and auxiliary fuel gas into the combustion chamber via the first gas flow channel 120 and the second gas flow channel 130 before mixing. That is, the auxiliary fuel gas and fuel gas are not premixed before entering the combustion chamber, avoiding backfire and explosion caused by the presence of premixed gases. Furthermore, an auxiliary fuel gas chamber 201 is provided within the housing 200, surrounding the gas distribution structure 100. The low-temperature auxiliary fuel gas within the chamber 201 forms a thermal insulation layer for the burner. On one hand, the low-temperature auxiliary fuel gas cools the housing 200, preventing creep and deformation under prolonged high temperatures and preventing excessive heat inside the burner. On the other hand, the burner preheats the auxiliary fuel gas, ensuring a certain base temperature after mixing with the fuel gas in the combustion chamber, making the mixture easier to ignite and decompose, thus promoting complete combustion. Moreover, the low-temperature auxiliary fuel gas replaces the thermal insulation material layer of traditional burners, saving material costs and reducing the size and weight of the burner.

[0071] Optionally, the combustion chamber 201 is arranged around the bottom and sides of the gas distribution structure 100. This arrangement results in a larger area for the combustion chamber 201 and better heat exchange effect.

[0072] Optionally, see [link to relevant documentation] Figures 1-3In this embodiment, the housing 200 further includes an inner housing 220, an outer housing 210, and a gas delivery pipe 230. The gas distribution structure 100 is installed inside the inner housing 220, and the gas distribution structure 100 and the inner peripheral wall of the inner housing 220 form a gas chamber 202, which is a gas delivery structure. The outer housing 210 is fitted over the inner housing 220, and the outer housing 210 and the inner housing 220 form a combustion-supporting chamber 201. One end of the gas delivery pipe 230 is connected to the gas flow chamber 110, and the other end is connected to the combustion-supporting chamber 201.

[0073] In this embodiment, the combustion-supporting gas in the combustion chamber 201 enters the gas flow chamber 110 through the gas delivery pipe 230, then enters the first gas flow channel 120 connected to the gas flow chamber 110, and finally exits from the first gas flow channel 120 into the combustion chamber. The combustion gas in the combustion chamber 202 enters the second gas flow channel 130 connected to it, and finally exits from the second gas flow channel 130 into the combustion chamber.

[0074] The gas is transported by forming a gas chamber 202 through the inner shell 220 and the gas distribution structure 100. The structure is simple and easy to process and assemble.

[0075] Further, see also Figure 1 and Figure 2 The gas inlet 2011 of the gas-supporting chamber 201 can be located at the bottom, and the gas inlet 2021 of the gas chamber 202 can also be located at the bottom. Since the gas chamber 202 is enclosed by the gas-supporting chamber 201, an external pipeline 240 is required to supply gas to the gas chamber 202. Optionally, one end of the external pipeline 240 is connected to the gas inlet 2021 at the bottom of the gas chamber 202, and the other end is bent and extends out of the outer casing 210.

[0076] Optionally, in this embodiment, the gas flowing in the second gas channel 130 is fuel gas, and the gas flowing in the first gas channel 120 is combustion-supporting gas. Therefore, multiple first gas channels 120 are provided circumferentially around the second gas channel 130. This arrangement can improve the mixing uniformity of the fuel gas and combustion-supporting gas, thereby promoting complete combustion. Preferably, for every unit of fuel gas flowing out, 10 units of combustion-supporting gas flow out around it to mix with it, which can achieve a better combustion effect.

[0077] Further, see also Figure 3In this embodiment, the gas flow chamber 110 includes multiple first gas flow paths 111 arranged parallel to each other along a first direction and multiple second gas flow paths 112 arranged parallel to each other along a second direction. Specifically, both ends of each first gas flow path 111 are connected to the combustion-supporting chamber 201 through a gas delivery pipe 230. Both ends of each second gas flow path 112 are connected to the combustion-supporting chamber 201 through a gas delivery pipe 230, and the second direction is perpendicular to the first direction. The gas flow chamber is formed by multiple crisscrossing first gas flow paths 111 and second gas flow paths 112, which on the one hand increases the gas flow rate and is beneficial to the stability of combustion; on the other hand, it facilitates processing.

[0078] Optionally, in this embodiment, the cross-sections of the first gas flow path 111 and the second gas flow path 112 are square.

[0079] Optionally, in this embodiment, the gas distribution structure 100 is an integral structure, which facilitates assembly.

[0080] Optionally, see [link to relevant documentation] Figure 1 and Figure 2 In this embodiment, the top of the gas distribution structure 100 is provided with a first groove 140, which forms a combustion chamber. The structure is simple and easy to manufacture.

[0081] Furthermore, such as Figure 4 As shown, the combustion chamber 201 includes a first combustion chamber 2001 and a second combustion chamber 2002, with the first combustion chamber 2001 surrounding the outer periphery of the second combustion chamber 2002. The first combustion chamber 2001 communicates with the second combustion chamber 2002. The second combustion chamber 2002 communicates with a gas flow chamber, or it communicates with the other end of a plurality of second gas flow channels 130. By configuring the combustion chamber 201 to include the first combustion chamber 2001 and the second combustion chamber 2002, the heat exchange area of ​​the combustion gas is increased, thereby improving the cooling effect of the combustion gas on the burner.

[0082] Optionally, see [link to relevant documentation] Figure 4In this embodiment, the outer shell 210 includes a first outer shell 211 and a second outer shell 212. The second outer shell 212 is fitted outside the inner shell 220 and together with the inner shell 220 forms a second combustion chamber 2002. The first outer shell 211 is fitted outside the second outer shell 212 and together with the second outer shell 212 forms a first combustion chamber 2001. Furthermore, the first combustion chamber 2001 has a combustion inlet 2011 at the end near the combustion chamber, and the second outer shell 212 has an air inlet 221 at the end away from the combustion chamber. The air inlet 221 connects the first combustion chamber 2001 and the second combustion chamber 2002. When the burner is working, the combustion gas enters the first combustion chamber 2001 through the combustion inlet 2011, flows downwards, then enters the second combustion chamber 2002 through the air inlet 221, and then flows upwards, entering the gas flow chamber 110 through the gas delivery pipe 230. This design extends the flow path of the combustion gas, increases its heat exchange area, and thus improves the cooling effect of the combustion gas on the burner.

[0083] Example 2

[0084] This embodiment provides a burner that is largely the same in structure as Embodiment 1, with improvements only. Therefore, only the differences between the two are described here; structures identical to those in Embodiment 1 will not be repeated. In this embodiment, technical features identical or corresponding to those in Embodiment 1 are referred to by the same reference numerals.

[0085] Specifically, such as Figures 5-7 As shown, in this embodiment, the gas flow cavity 110 includes multiple first gas flow paths 111 that are parallel and spaced apart along a first direction. The formation of a gas communication cavity through these multiple first gas flow paths 111 improves the gas flow rate, which is beneficial to combustion stability; furthermore, it facilitates processing.

[0086] Optionally, in this embodiment, the cross-section of the first gas flow path 111 is circular.

[0087] Furthermore, such as Figure 8As shown, in this embodiment, the housing 200 further includes an inner housing 220, an isolation cover 500, and an outer housing 210. The gas distribution structure 100 is installed inside the inner housing 220 and forms a gas chamber 202 with the bottom wall of the inner housing 220. The gas chamber 202 is connected to the other end of multiple second gas flow channels 130 and serves as a gas delivery structure. A combustion chamber is provided inside the inner housing 220, located above the gas distribution structure 100. An air inlet 221 is provided on the side wall of the inner housing 220 near the combustion chamber. The isolation cover 500 is installed outside the combustion chamber and has a first gap 2012 between it and the side wall of the inner housing 220. A second gap 2013, communicating with the first gap 2012, is between the gas distribution structure 100 and the side wall of the inner housing 220. The second gap 2013 communicates with the gas flow chamber 110. The outer shell 210 is fitted over the inner shell 220 and together with the side and bottom walls of the inner shell 220, forms a combustion-supporting chamber 201. The combustion-supporting gas within the chamber 201 enters the first gap 2012 through the inlet 221 and then passes through the second gap 2013 into the gas flow chamber 110. This arrangement increases the flow path of the combustion-supporting gas, improves the heat exchange area between the combustion-supporting gas and the burner, and thus enhances the cooling effect of the combustion-supporting gas on the burner. Furthermore, the burner has a relatively compact structure.

[0088] Optionally, see [link to relevant documentation] Figure 8 The combustion element 300 has a second groove 310 on the side near the gas distribution structure 100. The second groove 310 and the gas distribution structure 100 form an airflow buffer zone. The combustion gas and the auxiliary combustion gas mix in the airflow buffer zone before entering the combustion element 300. This arrangement allows the combustion gas and the auxiliary combustion gas to be reorganized in the airflow buffer zone before entering the combustion element 300. On the one hand, it reduces the resistance of the airflow into the combustion element 300 and accelerates the gas flow rate; on the other hand, it ensures that the combustion gas and the auxiliary combustion gas are fully mixed; and on the other hand, it reduces the impact of the combustion element 300 on the temperature rise of the gas distribution structure 100, resulting in better backfire prevention.

[0089] Example 3

[0090] This embodiment provides a burner that is largely the same in structure as Embodiment 1, with improvements only. Therefore, only the differences between the two are described here; structures identical to those in Embodiment 1 will not be repeated. In this embodiment, technical features identical or corresponding to those in Embodiment 1 are referred to by the same reference numerals.

[0091] Specifically, such as Figure 9 and Figure 10As shown, in this embodiment, the housing 200 further includes an outer shell 210. A gas distribution structure 100 is installed inside the outer shell 210. The gas distribution structure 100 and the inner peripheral wall of the outer shell 210 form a combustion-supporting chamber 201. The gas delivery structure is a gas delivery pipe 250, one end of which is connected to a gas flow chamber 110, and the other end extends out of the outer shell 210 and is connected to a gas source. With this configuration, the combustion-supporting gas in the combustion-supporting chamber 201 enters the combustion chamber through a second gas flow channel 130 connected to it. The gas enters the gas flow chamber 110 through the gas delivery pipe 250, and then enters the combustion chamber through a first gas flow channel 120 connected to the gas flow chamber 110. This housing 200 has a simple structure and is easy to manufacture and assemble.

[0092] Optionally, in this embodiment, the first gas flow channel 120 carries fuel gas, and the second gas flow channel 130 carries combustion-supporting gas. Therefore, multiple second gas flow channels 130 are provided circumferentially around the first gas flow channel 120. This arrangement improves the mixing uniformity of the fuel gas and combustion-supporting gas, thereby promoting complete combustion. Preferably, for every unit of fuel gas flowing out, 10 units of combustion-supporting gas flow out around it to mix with it, achieving a better combustion effect.

[0093] Optionally, in this embodiment, gas delivery pipes 250 are provided on both opposite sides of the gas distribution structure 100. This arrangement can increase the flow rate of the gas and thus improve the stability of combustion.

[0094] In other embodiments, see also Figure 9 and Figure 10 The housing 200 also includes an inner housing 220, which is disposed within the outer housing 210. The outer housing 210 and the inner housing 220 form a first combustion-supporting chamber 2001. A gas distribution structure 100 is installed within the inner housing 220, and the gas distribution structure 100 and the inner peripheral wall of the inner housing 220 form a second combustion-supporting chamber 2002. An air inlet 221 is provided at one end of the inner housing 220 near the combustion chamber, which connects the second combustion-supporting chamber 2002 and the first combustion-supporting chamber 2001. This arrangement extends the flow path of the combustion-supporting gas, increases the heat exchange area of ​​the combustion-supporting gas, and thus improves the cooling effect of the combustion-supporting gas on the burner.

[0095] Optionally, such as Figures 11-15As shown, in this embodiment, the gas distribution structure 100 further includes a cover 101, gas distribution blocks 102, a gas distribution plate 103, and a gas outlet block 104. The base plate 1011 of the cover 101 has a plurality of first combustion-supporting holes 10111 arranged in an array. Multiple gas distribution blocks 102 are provided, arranged parallel and spaced apart on the base plate 1011. Each gas distribution block 102 has a plurality of second combustion-supporting holes 1021 spaced apart along its own length direction. The second combustion-supporting holes 1021 correspond one-to-one with the first combustion-supporting holes 10111, and a third gas flow path 1022 is formed between two adjacent gas distribution blocks 102. A gas distribution plate 103 is disposed on a gas distribution block 102. The gas distribution plate 103 and the base plate 1011 form a gas flow cavity 110. The gas distribution plate 103 is provided with a third combustion-supporting hole 1031 corresponding to the second combustion-supporting hole 1021, and a group of combustion holes corresponding to the third gas flow path 1022. Each group of combustion holes includes multiple first combustion holes 1032. An outlet block 104 is disposed on the gas distribution plate 103. The outlet block 104 is provided with a fourth combustion-supporting hole 1041 corresponding to the third combustion-supporting hole 1031, and a second combustion hole 1042 corresponding to the first combustion holes 1032. The first combustion holes 1032 and the second combustion holes 1042 are connected to form a first gas flow channel 120. The first combustion-supporting holes 10111, the second combustion-supporting holes 1021, the third combustion-supporting holes 1031 and the fourth combustion-supporting holes 1041 are interconnected to form a second gas flow channel 130. The gas distribution structure 100 is relatively simple and easy to process and assemble.

[0096] When using this gas distribution structure 100, the combustion-supporting gas in the combustion chamber 201 sequentially passes through the first combustion-supporting gas hole 10111 on the base plate 1011, the second combustion-supporting gas hole 1021 on the gas distribution block 102, the third combustion-supporting gas hole 1031 on the gas distribution plate 103, and the fourth combustion-supporting gas hole 1041 on the gas outlet block 104 before entering the combustion chamber. After entering the gas flow chamber 110 via the gas delivery pipe 250, the gas diffuses into the third gas flow path 1022, and then sequentially passes through the first gas hole 1032 and the second gas hole 1042 before entering the combustion chamber. This gas distribution structure 100 achieves reliable separation of the combustion-supporting gas and the combustion gas.

[0097] Optionally, see [link to relevant documentation] Figure 14 The middle parts of multiple air distribution blocks 102 are connected by connecting ribs 106 to form a double-sided symmetrical comb-like structure. This arrangement makes the multiple air distribution blocks 102 form an integrated structure, which is convenient for both processing and assembly.

[0098] Optionally, in one possible embodiment, the base plate 1011, gas distribution block 102 and gas distribution plate 103 of the cover 101 can be made of stainless steel and are sealed and fixed by welding to prevent the gas in the gas flow cavity 110 from entering the second gas flow channel 130 through the gap and mixing with the combustion-supporting gas, so as to prevent high-temperature backfire.

[0099] Alternatively, in another possible embodiment, the base plate 1011, the air distribution block 102, and the air distribution plate 103 may be arranged to fit tightly together to achieve a seal.

[0100] Further, see also Figure 9 and Figure 10 A combustion element 300 with a porous structure can be installed in the combustion chamber. After exiting the gas distribution structure 100, the combustion-supporting fuel and the fuel gas enter the combustion element 300 for combustion, thus confining the flame within the combustion element 300. Compared to burners that utilize long-distance jet flames, this reduces the distance between the heated object and the combustion surface, minimizing flame burn-off and oxidation. Furthermore, after entering the combustion element 300, the combustion-supporting fuel and the fuel gas are further dispersed by the pores within the combustion element 300, promoting thorough mixing and combustion.

[0101] Optionally, the combustion element 300 can be a porous foam ceramic plate, a mesh ceramic plate, or a multi-layered interwoven metal wire mesh, etc.

[0102] Optionally, the combustion element 300 can be an infrared combustion plate, which can maintain the temperature of the combustion surface above 800°C, or even reach 1200°C. Without the installation of a heat insulation layer, the cooling scheme of using the combustion chamber 201 to wrap the gas distribution structure 100 can keep the temperature of the shell 200 stable at 38°C-40°C, with a low risk of backfire.

[0103] Optionally, to improve the heat insulation effect, a fixing member 400 can be provided on the inner peripheral wall of the combustion chamber. The fixing member 400 is used to fix the combustion component 300, preventing the combustion component 300 from directly contacting the inner shell 220, and also helps to control the temperature of the inner shell 220.

[0104] Example 4

[0105] This embodiment provides a burner that is largely the same in structure as that of Embodiment 3, with improvements only. Therefore, only the differences between the two are described here; structures identical to those in Embodiment 3 will not be repeated. In this embodiment, technical features identical or corresponding to those in Embodiment 3 are referred to by the same reference numerals.

[0106] Specifically, such as Figure 16 and Figure 17As shown, in this embodiment, the gas distribution structure 100 further includes a cover 101, a gas outlet block 104, and a combustion-supporting pipe 105. The base plate 1011 of the cover 101 has a plurality of first combustion-supporting holes 10111 arranged in an array. The gas outlet block 104 is located at the opening of the cover 101, and the gas outlet block 104 and the cover 101 form a gas flow cavity 110. The gas outlet block 104 has fourth combustion-supporting holes 1041 corresponding one-to-one with the first combustion-supporting holes 10111, and a plurality of first gas flow channels 120. One end of the combustion-supporting pipe 105 is connected to the first combustion-supporting hole 10111, and the other end is connected to the fourth combustion-supporting hole 1041. The first combustion-supporting holes 10111, the combustion-supporting pipe 105, and the second combustion-supporting holes 1021 form a second gas flow channel 130. This gas distribution structure 100 is relatively simple and easy to process and assemble.

[0107] When using this gas distribution structure 100, the combustion-supporting gas in the combustion chamber 201 sequentially enters the combustion chamber through the first combustion-supporting gas hole 10111 on the base plate 1011, the combustion-supporting gas pipe 105, and the fourth combustion-supporting gas hole 1041 on the gas outlet block 104. After entering the gas flow chamber 110 through the gas delivery pipe 250, the gas diffuses into the gaps between the multiple combustion-supporting gas pipes 105, and then enters the combustion chamber through the first gas flow channel 120. This gas distribution structure 100 achieves reliable separation of combustion-supporting gas and gas.

[0108] Optionally, in one possible embodiment, one end of the gas-supporting pipe 105 is press-fitted with the first gas-supporting hole 10222 to achieve communication with the first gas-supporting hole 10222. The other end of the gas-supporting pipe 105 is press-fitted with the fourth gas-supporting hole 1041 to achieve communication with the fourth gas-supporting hole 1041.

[0109] Optionally, in other possible embodiments, the materials of the combustion-supporting pipe 105, the housing 101, and the gas outlet block 104 can be stainless steel. One end of the combustion-supporting pipe 105 is welded to the bottom plate 1011 of the housing 101 to communicate with the first combustion-supporting hole 10222. The other end of the combustion-supporting pipe 105 is welded to the gas outlet block 104 to communicate with the fourth combustion-supporting hole 1041.

[0110] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Burner, characterized in that The application relates to a gas distribution structure and a gas supply device. The gas distribution structure (100) comprises a gas flow cavity (110), a plurality of first gas flow channels (120) and a plurality of second gas flow channels (130), one end of the plurality of first gas flow channels (120) is communicated with the gas flow cavity (110), the other end is used for being communicated with a combustion chamber, one end of the plurality of second gas flow channels (130) is used for being communicated with the combustion chamber, and the plurality of second gas flow channels (130) penetrate through the gas distribution structure (100). The shell (200) is used for mounting the gas distribution structure (100), the shell (200) comprises a combustion-supporting gas cavity (201) surrounding the periphery of the gas distribution structure (100) and a gas supply structure, one of the combustion-supporting gas cavity (201) and the gas supply structure is communicated with the gas flow cavity (110), and the other is communicated with the other end of the plurality of second gas flow channels (130).

2. The burner of claim 1, wherein The combustion-supporting gas cavity (201) comprises a first combustion-supporting gas cavity (2001) and a second combustion-supporting gas cavity (2002), the first combustion-supporting gas cavity (2001) surrounds the periphery of the second combustion-supporting gas cavity (2002), and the first combustion-supporting gas cavity (2001) is communicated with the second combustion-supporting gas cavity (2002); the second combustion-supporting gas cavity (2002) is communicated with the gas flow cavity (110), or the second combustion-supporting gas cavity (2002) is communicated with the other end of the plurality of second gas flow channels (130).

3. The burner of claim 1, wherein The shell (200) further comprises: An inner shell (220) is used for mounting the gas distribution structure (100), the gas distribution structure (100) and the inner periphery wall of the inner shell (220) form a gas cavity (202), the gas cavity (202) is communicated with the other end of the plurality of second gas flow channels (130), and the gas cavity (202) is the gas supply structure; An outer shell (210) is sleeved outside the inner shell (220), the outer shell (210) and the inner shell (220) form the combustion-supporting gas cavity (201); A gas supply pipeline (230) is communicated with the gas flow cavity (110) at one end and communicated with the combustion-supporting gas cavity (201) at the other end.

4. The burner of claim 3, wherein The outer shell (210) comprises a first outer shell (211) and a second outer shell (212), the second outer shell (212) is sleeved outside the inner shell (220) and surrounds the second combustion gas chamber (2002) with the inner shell (220), the first outer shell (211) is sleeved outside the second outer shell (212) and surrounds the first combustion gas chamber (2001) with the second outer shell (212), the first combustion gas chamber (2001) is provided with a combustion gas inlet (2011) at one end close to the combustion chamber, and the second outer shell (212) is provided with an air inlet (221) at one end away from the combustion chamber, the air inlet (221) is used for communicating the first combustion gas chamber (2001) and the second combustion gas chamber (2002).

5. The burner of claim 1, wherein The shell (200) further comprises: The inner shell (220), the gas distribution structure (100) is installed in the inner shell (220) and surrounds the gas chamber (202) with the bottom wall of the inner shell (220), the gas chamber (202) is communicated with the other end of the plurality of second gas flow channels (130), the gas chamber (202) is the gas conveying structure, the inner shell (220) is provided with the combustion chamber, the combustion chamber is located above the gas distribution structure (100), the inner shell (220) is provided with an air inlet (221) on the side wall close to the combustion chamber; The isolation cover (500) is sleeved outside the combustion chamber and has a first gap (2012) with the side wall of the inner shell (220), the gas distribution structure (100) and the side wall of the inner shell (220) have a second gap (2013) communicated with the first gap (2012), the second gap (2013) is communicated with the gas flow passage (110); The outer shell (210) is sleeved outside the inner shell (220) and surrounds the combustion gas chamber (201) with the side wall and the bottom wall of the inner shell (220), the combustion gas in the combustion gas chamber (201) enters the first gap (2012) through the air inlet (221), and then enters the gas flow passage (110) through the second gap (2013).

6. Burner according to claim 3 or 5, characterized in that The second gas flow channel (130) is provided with a plurality of first gas flow channels (120) in the circumferential direction.

7. The burner of claim 3, wherein The gas flow passage (110) comprises a plurality of first gas flow paths (111) arranged in parallel and spaced apart in a first direction, both ends of each first gas flow path (111) are communicated with the combustion gas chamber (201) through a gas conveying pipeline (230).

8. The burner of claim 7, wherein The gas flow passage (110) further comprises a plurality of second gas flow paths (112) arranged in parallel and spaced apart in a second direction, both ends of each second gas flow path (112) are communicated with the combustion gas chamber (201) through a gas conveying pipeline (230), and the second direction is perpendicular to the first direction.

9. The burner of claim 1, wherein The shell (200) further comprises an outer shell (210), the gas distribution structure (100) is installed in the outer shell (210), the gas distribution structure (100) and the inner circumferential wall of the outer shell (210) form the combustion gas chamber (201), the gas delivery structure is a gas delivery pipe (250), one end of the gas delivery pipe (250) communicates with the gas flow passage (110), and the other end penetrates the outer shell (210) and communicates with a gas source.

10. The burner of claim 9, wherein The shell (200) further comprises an inner shell (220), the inner shell (220) is arranged in the outer shell (210), the outer shell (210) and the inner shell (220) form a first combustion gas chamber (2001), the gas distribution structure (100) is installed in the inner shell (220), the gas distribution structure (100) and the inner circumferential wall of the inner shell (220) form a second combustion gas chamber (2002), and one end of the inner shell (220) close to the combustion chamber is provided with an air inlet (221), the air inlet (221) is used for communicating the second combustion gas chamber (2002) and the first combustion gas chamber (2001).

11. Burner according to claim 9 or 10, characterized in that The gas distribution structure (100) further comprises: A cover shell (101), a plurality of first combustion gas holes (10111) are arranged on the bottom plate (1011) of the cover shell (101); A plurality of gas distribution blocks (102) are arranged in parallel and at intervals on the bottom plate (1011), a plurality of second combustion gas holes (1021) are arranged on each gas distribution block (102) and are arranged at intervals along the length direction of the gas distribution block (102), the second combustion gas holes (1021) are arranged in one-to-one correspondence with the first combustion gas holes (10111), and a third gas flow path (1022) is formed between adjacent two gas distribution blocks (102); A gas distribution plate (103) is arranged on the gas distribution block (102), the gas distribution plate (103) and the bottom plate (1011) form the gas flow passage (110), the gas distribution plate (103) is provided with a third combustion gas hole (1031) corresponding to the second combustion gas hole (1021) and a gas hole group corresponding to the third gas flow path (1022), and each gas hole group comprises a plurality of first gas holes (1032); An air outlet block (104) is arranged on the gas distribution plate (103), the air outlet block (104) is provided with a fourth combustion gas hole (1041) corresponding to the third combustion gas hole (1031) and a second gas hole (1042) corresponding to the first gas hole (1032); the first gas hole (1032) and the second gas hole (1042) are communicated to form the first gas flow channel (120), and the first combustion gas hole (10111), the second combustion gas hole (1021), the third combustion gas hole (1031) and the fourth combustion gas hole (1041) are communicated to form the second gas flow channel (130).

12. The burner of claim 11, wherein The middle parts of the plurality of gas distribution blocks (102) are connected by connecting ribs (106) to form a double-symmetrical comb-tooth structure.

13. Burner according to claim 9 or 10, characterized in that The gas distribution structure (100) further comprises: A cover (101), a bottom plate (1011) of the cover (101) being provided with a plurality of first combustion-supporting gas holes (10111) arranged in an array; An outlet block (104) is arranged at an opening of the cover (101), the outlet block (104) and the cover (101) surrounding the gas flow passage (110), the outlet block (104) being provided with a fourth combustion-supporting gas hole (1041) corresponding to each of the first combustion-supporting gas holes (10111) and a plurality of first gas flow channels (120); A combustion-supporting gas pipe (105) is in communication with one end of the first combustion-supporting gas hole (10111) and the other end of the fourth combustion-supporting gas hole (1041), the first combustion-supporting gas hole (10111), the combustion-supporting gas pipe (105) and the fourth combustion-supporting gas hole (1041) forming the second gas flow channel (130).

14. The burner of claim 1, wherein A first recess (140) is arranged at the top of the gas distribution structure (100), the first recess (140) being the combustion chamber.

15. The burner of claim 1, wherein A combustion member (300) in a porous structure is arranged in the combustion chamber, the combustion-supporting gas and the fuel gas from the gas distribution structure (100) entering the combustion member (300).

16. The burner of claim 15, wherein A second recess (310) is arranged on the side of the combustion member (300) close to the gas distribution structure (100), the second recess (310) and the gas distribution structure (100) surrounding a gas flow buffer area, the combustion-supporting gas and the fuel gas mixing in the gas flow buffer area and then entering the combustion member (300).

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