Combustion head, gas device and gas installation

Abstract

The utility model relates to a gas equipment technical field discloses a kind of combustion head, gas device and gas equipment. Combustion head includes: inner perimeter, close to the side closed setting of first end, and close to the side open setting of second end, inner perimeter inside forms inner chamber, and inner perimeter is equipped with the gas hole being communicated with inner chamber;Peripheral, it is the outer circumferential side of inner perimeter, and the side between peripheral close to second end and inner perimeter is closed setting, and the side close to first end is open setting, and the outer chamber between peripheral and inner perimeter is formed, and peripheral is equipped with the air hole being communicated with outer chamber;The ratio of the gas area of gas hole and the gas area of air hole is equal to the stoichiometric ratio of gas and combustion-supporting gas fully combustion. The utility model mixes gas and combustion-supporting gas in outer chamber, and makes gas and combustion-supporting gas can be burned under the condition of stoichiometric ratio by constructing gas hole and air hole, to make gas fully combustion, reduce the content of nitrogen oxides in flue gas, and improve combustion thermal efficiency.

Description

Technical Field

[0001] This utility model relates to the field of gas equipment technology, specifically to a burner head, a gas device, and a gas equipment. Background Technology

[0002] Currently, gas-fired equipment injects gas into the burner through a gas distributor nozzle. The combustion-supporting gas flow enters the burner via a gas ejector, while most of the combustion-supporting gas enters through the bottom air control plate. In this combustion method, when there is an excess of combustion-supporting gas, the gas can burn completely, but the excess gas also carries away some heat, leading to reduced efficiency. Conversely, when there is insufficient combustion-supporting gas, the gas combustion is incomplete, producing large amounts of CO and nitrogen oxides, resulting in substandard flue gas performance. Therefore, regardless of whether there is an excess or deficiency of combustion-supporting gas, the reason for unsatisfactory combustion is that the fuel and combustion-supporting gas are not burning under stoichiometric conditions, thus affecting the combustion thermal efficiency. Utility Model Content

[0003] In view of this, the present invention provides a burner head to solve the problem that the combustion effect is unsatisfactory because the fuel and combustion-supporting gas do not burn under stoichiometric conditions. Simultaneously, the present invention provides a gasification device. Furthermore, the present invention provides a gasification equipment.

[0004] In a first aspect, this utility model provides a combustion head, the combustion head having a first end and a second end disposed opposite to each other, the combustion head comprising: The inner circumference is closed on the side near the first end and open on the side near the second end. An inner cavity is formed inside the inner circumference, and a gas vent is provided in the inner circumference that communicates with the inner cavity. The periphery is defined as the outer periphery of the inner periphery. The periphery is closed between the side near the second end and the inner periphery, and is open between the side near the first end. An outer cavity is formed between the periphery and the inner periphery. The periphery is provided with a vent hole communicating with the outer cavity. The gas enters the inner cavity from the second end and enters the outer cavity through the gas hole. The combustion-supporting gas outside the periphery enters the outer cavity through the vent hole, so that the gas and the combustion-supporting gas are mixed in the outer cavity. Wherein, the ratio of the gas passage area of ​​the gas vent to the gas passage area of ​​the vent is equal to the stoichiometric ratio of the gas and the combustion-supporting gas for complete combustion.

[0005] Beneficial effects: This utility model provides a burner head, which is constructed with an inner cavity and an outer cavity through an inner circumference and an outer circumference. A gas combustion hole is provided in the inner circumference and a ventilation hole is provided in the outer circumference. By separating the inner cavity and the outer cavity, the gas combustion hole and the ventilation hole respectively mix the gas combustion gas and the combustion-supporting gas in the outer cavity. Furthermore, by constructing the gas combustion hole and the ventilation hole, the ratio of the gas passage area to the gas passage area is equal to the stoichiometric ratio of the gas combustion gas and the combustion-supporting gas for complete combustion. This allows the gas combustion gas and the combustion-supporting gas to burn under stoichiometric conditions, thereby ensuring complete combustion of the gas combustion gas, reducing the content of nitrogen oxides in the flue gas, and improving the combustion thermal efficiency.

[0006] In one optional embodiment, when the fuel gas is methane and the combustion-supporting gas is air, the stoichiometric ratio of the methane to the air for complete combustion is 1:9.52, and the ratio of the air passage area of ​​the fuel gas orifice to the air passage area of ​​the vent is 1:9.52.

[0007] Beneficial effects: For commonly used fuel methane and commonly used combustion-supporting gas air, since the stoichiometric ratio of methane to air is 1:9.52, the ratio of the gas passage area of ​​the fuel orifice to the gas passage area of ​​the vent is 1:9.52. This ensures that the ratio of the gas passage area of ​​the fuel orifice to the gas passage area of ​​the vent equals the stoichiometric ratio of the fuel and the combustion-supporting gas for complete combustion. This guarantees the complete combustion of methane as fuel and oxygen in air as combustion-supporting gas, thus ensuring combustion thermal efficiency.

[0008] In one optional embodiment, both the gas orifice and the vent orifice are circular holes, and the ratio of the diameter of the gas orifice to the diameter of the vent orifice is 1: .

[0009] Beneficial effects: Both the gas vent and the air vent are designed as round holes, which facilitates the processing of the burner head and improves the smoothness of the flow of gas and combustion-supporting gas.

[0010] In one optional embodiment, a plurality of gas holes are provided along the circumferential and / or height direction of the inner periphery, and a plurality of vent holes are provided along the circumferential and / or height direction of the outer periphery, and the number of gas holes and vent holes are equal.

[0011] Beneficial effects: Multiple gas vents and ventilation holes are provided to ensure that the gas and combustion-supporting gas can be evenly introduced into the external cavity for mixing; the number of gas vents and ventilation holes is equal to ensure that the ratio of the total air passage area of ​​the gas vents to the total air passage area of ​​the ventilation holes is equal to the stoichiometric ratio of the gas and combustion-supporting gas for complete combustion, thus guaranteeing complete combustion of the gas.

[0012] In one optional embodiment, the fuel gas and the combustion-supporting gas are mixed in the outer cavity and exit the burner head from the first end for combustion; The gas vent is inclined toward the first end on the side near the outer cavity, and the ventilation vent is inclined toward the first end on the side near the outer cavity.

[0013] Beneficial effects: By tilting the side of the gas orifice and vent hole closest to the outer cavity toward the first end, the gas and combustion-supporting gas entering the outer cavity form an upward flow field, thereby enabling the gas and combustion-supporting gas to be fully mixed in the outer cavity and improving the efficiency of combustion of the mixed gas as it escapes from the first end of the burner head.

[0014] In one optional embodiment, a plurality of gas holes at the same height position in the inner perimeter form a first gas hole group, and the first gas hole group has multiple groups along the height direction of the inner perimeter. The multiple vent holes at the same height position on the periphery form a first vent hole group, and the first vent hole group has multiple groups along the height direction of the periphery; Multiple sets of the first gas combustion port group and multiple sets of the first vent port group are arranged crosswise along the height direction of the combustion head.

[0015] Beneficial effects: Multiple sets of first gas vents and multiple sets of first vents are arranged crosswise along the height direction of the burner head at the same height position in the inner perimeter, which allows the gas and combustion-supporting gas to be cross-mixed, further improving the mixing uniformity; at the same time, since the gas and combustion-supporting gas enter the outer cavity in opposite directions, the cross-arranged first gas vents and first vents can also prevent the gas from leaking out of the burner head from the vents, increasing safety.

[0016] In one optional embodiment, the plurality of gas holes in the vertical direction of the inner circumference form a second gas hole group, and the second gas hole group is provided in multiple groups along the circumference of the inner circumference; The plurality of ventilation holes in the vertical direction of the periphery form a second ventilation hole group, and the second ventilation hole group has multiple groups along the circumference of the periphery; Multiple sets of second gas vents and multiple sets of second vents are arranged circumferentially along the burner head.

[0017] Beneficial effects: Multiple sets of second gas holes and multiple sets of second vent holes are arranged crosswise along the circumference of the burner head in the same vertical column position of the inner perimeter, so that the gas and combustion-supporting gas are cross-mixed, further improving the mixing uniformity; at the same time, since the gas and combustion-supporting gas enter the outer cavity in opposite directions, the cross-arranged sets of second gas holes and second vent holes can also prevent the gas from leaking out of the burner head from the vent holes, increasing safety.

[0018] Secondly, this utility model also provides a gasification device, the gasification device comprising: The housing has a cavity inside, and the housing has an opening communicating with the cavity, as well as a plurality of first mounting holes disposed opposite to the opening; In the above-described embodiment, the first ends of the plurality of combustion heads are respectively fixedly connected to the plurality of first mounting holes; A combustion chamber is disposed in the cavity and communicates with the second end of the combustion head; A gas delivery assembly is fixedly connected to the housing and communicates with the gas chamber; Gas is introduced into the gas chamber through the gas supply assembly, enters the inner cavity through the second end of the burner head, and enters the outer cavity of the burner head through the combustion hole of the burner head; combustion-supporting gas enters the chamber through the opening and enters the outer cavity of the burner head through the vent hole of the burner head, so that the gas and the combustion-supporting gas are mixed in the outer cavity.

[0019] Beneficial effects: This utility model also provides a gas device, in which multiple burners are provided in the housing, so that the gas and combustion-supporting gas can be mixed and burned through microchannels, miniaturizing the combustion reaction zone and generating multiple micro-diffusion small flames, thereby reducing the residence time of fuel and combustion-supporting gas in the hot flame area and significantly reducing nitrogen oxide emissions; at the same time, it can also prevent backfire, ensuring the safety and operational stability of the gas device.

[0020] In one optional embodiment, the gas chambers are provided in a plurality of locations, and the plurality of gas chambers are spaced apart in the chamber; the combustion-supporting gas enters the chamber through the opening and flows to the outside of the burner head through the gap between two of the gas chambers; The gas delivery assembly includes multiple gas delivery pipes, and each of the multiple gas delivery pipes is connected to a corresponding gas chamber.

[0021] Beneficial effects: The gap between the two gas chambers provides an intake space for the combustion-supporting gas to enter the chamber and reach the outer periphery of the burner head; the multiple gas supply pipes of the gas supply assembly are connected to the multiple gas chambers one by one, thereby supplying gas to the multiple burners respectively.

[0022] In one optional embodiment, the plurality of burners are arranged in a matrix, and a row of the plurality of burners forms a burner group; the gas chamber is provided with a plurality of first air passages, and the plurality of first air passages form a row of air passage groups or multiple rows of air passage groups. When the gas chamber is provided with a row of air passage holes, the plurality of first air passage holes in the row of air passage holes are connected one-to-one with the plurality of burners in the group of burners; When the gas chamber is provided with multiple rows of air passage holes, the multiple first air passage holes in each row of air passage holes are connected one-to-one with the multiple burners in each group of burner heads.

[0023] Beneficial effects: By using the first air passage with different numbers of rows in the gas chamber, it can achieve the effects of one row of flames, two rows of flames, four rows of flames, and six rows of flames, providing a variety of flame options.

[0024] Thirdly, this utility model also provides a gas-fired device, the gas-fired device comprising: The gas device described in the above embodiments; The air duct communicates with the opening of the housing in the gas device and is used to introduce the combustion-supporting gas into the chamber of the housing.

[0025] Beneficial effects: This utility model also provides a gas device, which is provided with an air duct that communicates with the opening of the housing in the gas device. The air duct introduces the combustion-supporting gas into the cavity of the housing so that the combustion-supporting gas can be mixed with the gas in the burner head and then burned. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of a combustion head provided by this utility model; Figure 2 A side view of a combustion head from a first perspective, provided for this utility model; Figure 3 for Figure 2 Sectional view along the middle AA direction; Figure 4 A side view of a combustion head from a first perspective, provided for this utility model; Figure 5 for Figure 4 Sectional view along the BB direction; Figure 6 A cross-sectional view of a gas-fired device provided by this utility model; Figure 7 An exploded view of a gas-fired device provided by this utility model; Figure 8 A schematic diagram of the structure of the shell provided by this utility model; Figure 9 A schematic diagram of the first structure of the gas chamber provided by this utility model; Figure 10 A schematic diagram of a second structural representation of the gas chamber provided by this utility model; Figure 11A schematic diagram of the structure of the gas distribution bar provided by this utility model.

[0028] Explanation of reference numerals in the attached figures: 100. Burner head; 110. First end; 120. Second end; 130. Inner circumference; 131. Combustion port; 140. Inner cavity; 150. Outer circumference; 151. Vent hole; 160. Outer cavity; 200, housing; 210, opening; 220, first mounting hole; 230, second mounting hole; 300. Gas chamber; 310. First vent; 320. Second vent; 400. Gas delivery assembly; 410. Gas delivery pipe; 420. Gas distribution rod; 421. Interface; 500, burner nozzle. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0032] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] Currently, there are two main methods for air intake in gas-fired equipment. One method involves injecting combustion-supporting gases, such as air, into the burner along with the gas during combustion. The other method involves a large amount of air entering from the bottom of the burner due to the suction of a fan. A control plate is installed at the bottom of the gas-fired unit to regulate the air intake. This control plate has small holes of varying diameters. By adjusting the position of the control plate and observing the CO content in the flue gas, the completeness of combustion can be determined. This relies heavily on empirical judgment. Therefore, if the intake holes on the control plate are too large, an excessive amount of combustion-supporting gas will be injected, leading to flameout; if the holes are too small, insufficient combustion-supporting gas will be injected, resulting in incomplete combustion. Thus, the amount of combustion-supporting gas entering cannot be well controlled.

[0034] Therefore, embodiments of this utility model provide a burner head, a gas device, and a gas equipment to solve the problem that the current fuel and combustion-supporting gas do not burn under stoichiometric conditions, resulting in unsatisfactory combustion effects.

[0035] The following is combined Figures 1-11 The following describes embodiments of the present invention.

[0036] According to an embodiment of the present invention, on one hand, a combustion head is provided, such as... Figure 1 As shown, the combustion head 100 has a first end 110 and a second end 120 that are disposed opposite to each other.

[0037] Specifically, the burner head 100 is cylindrical in shape. After the burner head 100 is assembled into the gas device, the first end 110 is set upward and forms an opening for gas combustion, and the second end 120 is set downward and forms another opening for gas introduction.

[0038] This embodiment provides one type of burner head, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the combustion head 100 includes: an inner perimeter 130, an inner cavity 140, a outer perimeter 150, and an outer cavity 160.

[0039] The inner circumference 130 is closed on the side near the first end 110 and open on the side near the second end 120. An inner cavity 140 is formed inside the inner circumference 130, and a gas outlet 131 communicating with the inner cavity 140 is provided. The outer circumference 150 is the outer periphery of the inner circumference 130. The side of the outer circumference 150 near the second end 120 is closed between the outer circumference 130 and the inner circumference 130, and the side near the first end 110 is open. A gas outlet 131 communicating with the inner circumference 130 is formed between the outer circumference 150 and the inner circumference 130. The outer cavity 160 and the periphery 150 are provided with a vent 151 communicating with the outer cavity 160; the gas enters the inner cavity 140 from the second end 120 and enters the outer cavity 160 through the gas hole 131; the combustion-supporting gas outside the periphery 150 enters the outer cavity 160 through the vent 151, so that the gas and the combustion-supporting gas are mixed in the outer cavity 160; wherein, the ratio of the gas passage area of ​​the gas hole 131 to the gas passage area of ​​the vent 151 is equal to the stoichiometric ratio of the gas and the combustion-supporting gas for complete combustion.

[0040] In the above embodiment, the burner head 100 is constructed with an inner cavity 140 and an outer cavity 160 through an inner perimeter 130 and an outer perimeter 150. A gas combustion port 131 is provided in the inner perimeter 130 and a venting port 151 is provided in the outer perimeter 150. By separating the inner cavity 140 and the outer cavity 160, the gas combustion port 131 and the venting port 151 respectively mix the gas combustion gas and the combustion-supporting gas in the outer cavity 160. By constructing the gas combustion port 131 and the venting port 151, the ratio of the air passage area of ​​the gas combustion port 131 to the air passage area of ​​the venting port 151 is equal to the stoichiometric ratio for complete combustion of the gas combustion gas and the combustion-supporting gas. This allows the gas combustion gas and the combustion-supporting gas to burn under stoichiometric conditions, thereby ensuring complete combustion of the gas combustion gas, reducing the content of nitrogen oxides in the flue gas, and improving the combustion thermal efficiency.

[0041] Specifically, the burner head 100 is constructed as a cylinder. The inner circumference 130 is closed at the end near the first end 110 by a circular plate, while the side near the second end 120 is open by a circular opening. The outer circumference 150 is closed to the inner circumference 130 at a distance from the second end 120 by an annular plate, and the end of the outer circumference 150 near the second end 120 is open by a circular opening to form the second end 120 of the burner head 100; the side of the outer circumference 150 near the first end 110 is also open by a circular opening to form the first end 110 of the burner head 100. This allows the downward-facing opening of the second end 120 to communicate with the inner cavity 140 inside the inner circumference 130, and the upward-facing opening of the first end 110 to communicate with the outer cavity 160 between the outer circumference 150 and the inner circumference 130. This allows the gas to enter the inner cavity 140 through the opening at the second end 120 and then enter the outer cavity 160 through the gas port 131; the combustion-supporting gas outside the periphery 150 enters the outer cavity 160 through the vent 151, so that the gas and the combustion-supporting gas mix in the outer cavity 160; the mixed gas and the combustion-supporting gas are burned at the opening at the second end 120, which is connected to the outer cavity 160.

[0042] Furthermore, by designing the dimensions of the gas orifice 131 and the vent 151, the ratio of the air passage area of ​​the gas orifice 131 to that of the vent 151 is equal to the stoichiometric ratio of the gas and the combustion-supporting gas for complete combustion. When the flow velocities of the gas and the combustion-supporting gas are the same, the gas and the combustion-supporting gas can be introduced in amounts according to the stoichiometric ratio for complete combustion. The air passage area refers to the cross-sectional area of ​​the orifice location. For a square orifice, the air passage area is the area of ​​the corresponding square; for a circular orifice, the air passage area is the area of ​​the corresponding circle.

[0043] Furthermore, the combustion-supporting gases include, but are not limited to, oxygen, air, ozone, and chlorine; the combustion gases include, but are not limited to, natural gas, coal gas, and hydrogen. Since the stoichiometric ratios for complete combustion differ between different combustion gases and different combustion-supporting gases, the dimensions of the gas vent 131 and the vent 151 need to be adjusted according to the actual types of combustion gases and combustion-supporting gases.

[0044] In some embodiments, such as Figure 3 , Figure 5 As shown, when the fuel gas is methane and the combustion-supporting gas is air, the stoichiometric ratio of methane to air is 1:9.52, and the ratio of the air passage area of ​​the fuel gas port 131 to the air passage area of ​​the vent port 151 is 1:9.52.

[0045] In the above embodiments, for commonly used fuel methane and commonly used combustion-supporting gas air, since the stoichiometric ratio of methane to air is 1:9.52, the ratio of the air passage area of ​​the fuel gas orifice 131 to the air passage area of ​​the vent 151 is constructed to be 1:9.52. This ensures that the ratio of the air passage area of ​​the fuel gas orifice 131 to the air passage area of ​​the vent 151 is equal to the stoichiometric ratio of the fuel gas and the combustion-supporting gas for complete combustion, thereby ensuring that the methane as fuel gas and the oxygen in the air as the combustion-supporting gas are fully combusted and ensuring combustion thermal efficiency.

[0046] Specifically, when the fuel gas is methane and the combustion-supporting gas is air, the combustion of fuel gas with air is essentially a reaction between the fuel gas and oxygen in the air. Air contains approximately 21% oxygen and 79% nitrogen, therefore the oxygen to nitrogen ratio in air is 1:3.76. Thus, the equation for the reaction between fuel gas and air is: CH4+2(O2+3.76N2) = 2H2O+CO2+7.52N2 Since nitrogen does not participate in the combustion reaction, 9.52 mol of air are required for the complete combustion of 1 mol of CH4. That is, the stoichiometric ratio of fuel gas and air for complete combustion is 1:9.52. Therefore, the ratio of the air passage area of ​​the fuel gas orifice 131 to the air passage area of ​​the vent 151 is 1:9.52.

[0047] In some embodiments, such as Figure 3 , Figure 5 As shown, both the gas vent 131 and the vent 151 are circular holes, and the ratio of the diameter of the gas vent 131 to the diameter of the vent 151 is 1: .

[0048] In the above embodiments, both the gas vent 131 and the air vent 151 are round holes, which facilitates the processing of the combustion head and improves the smoothness of the flow of gas and combustion-supporting gas.

[0049] Specifically, since both the gas combustion port 131 and the vent port 151 are circular, and the combustion gas is methane and the combustion-supporting gas is air, the ratio of the air passage area of ​​the gas combustion port 131 to the air passage area of ​​the vent port 151 is 1:9.52. Therefore, according to the formula for calculating the area of ​​a circle: S=πr 2 (where r is the radius of the circle), the ratio of the diameter of the gas vent 131 to the diameter of the vent 151 is 1: .

[0050] Furthermore, in this embodiment, the diameter of the gas combustion hole 131 is 1.2 mm, and the diameter of the vent hole 151 is 3.7 mm.

[0051] In some embodiments, such as Figure 3 , Figure 5As shown, multiple gas holes 131 are provided along the circumferential and / or height direction of the inner perimeter 130, and multiple vent holes 151 are provided along the circumferential and / or height direction of the outer perimeter 150, and the number of gas holes 131 and vent holes 151 are equal.

[0052] In the above embodiments, multiple gas holes 131 and vent holes 151 are provided so that the gas and the combustion-supporting gas can be uniformly introduced into the outer cavity 160 for mixing; the number of gas holes 131 and vent holes 151 is equal so that the ratio of the total air passage area of ​​the gas holes 131 to the total air passage area of ​​the vent holes 151 is equal to the stoichiometric ratio of the gas and the combustion-supporting gas for complete combustion, thus ensuring complete combustion of the gas.

[0053] Specifically, the arrangement of the gas vents 131 can be as follows: multiple vents can be arranged only along the circumference of the inner perimeter 130, multiple vents can be arranged only along the height of the inner perimeter 130, or multiple vents can be arranged simultaneously along both the circumference and height of the inner perimeter 130. This embodiment uses the third arrangement to ensure the uniformity of the gas vents 131 distribution within the inner perimeter 130. The arrangement of the vents 151 on the outer perimeter 150 is similar and will not be described further here.

[0054] In some embodiments, such as Figure 3 , Figure 5 As shown, the gas and the combustion-supporting gas are mixed in the outer cavity 160 and escape from the first end 110 to the burner head 100 for combustion; the gas hole 131 is inclined towards the first end 110 on the side near the outer cavity 160, and the vent hole 151 is inclined towards the first end 110 on the side near the outer cavity 160.

[0055] In the above embodiment, the side of the gas vent 131 and the vent 151 closest to the outer cavity 160 is inclined toward the first end 110, so that the gas and combustion-supporting gas entering the outer cavity 160 form an upward flow field, thereby making the gas and combustion-supporting gas fully mixed in the outer cavity 160 and improving the efficiency of the mixed gas escaping from the first end 110 to the burner head 100 for combustion.

[0056] Specifically, since the gas enters the outer cavity 160 from the inner cavity 140 through the gas hole 131, the side of the gas hole 131 near the outer cavity 160 is designed to be inclined toward the first end 110, so that the gas can be introduced into the outer cavity 160 in the direction of the first end 110 of the burner head 100; similarly, since the combustion-supporting gas enters the outer cavity 160 from the outside of the burner head 100 through the vent hole 151, the side of the vent hole 151 near the outer cavity 160 is designed to be inclined toward the first end 110, so that the combustion-supporting gas can be introduced into the outer cavity 160 in the direction of the first end 110 of the burner head 100.

[0057] Furthermore, when the burner head 100 is set vertically, the angle between the axis of the gas port 131 and the vent port 151 and the horizontal plane is in the range of 30°-60°.

[0058] In some embodiments, such as Figure 3 , Figure 5 As shown, multiple gas holes 131 at the same height position in the inner perimeter 130 form a first gas hole group, and multiple groups of the first gas hole group are provided along the height direction of the inner perimeter 130; multiple vent holes 151 at the same height position in the outer perimeter 150 form a first vent hole group, and multiple groups of the first vent hole group are provided along the height direction of the outer perimeter 150; the multiple groups of first gas hole groups and the multiple groups of first vent hole groups are arranged crosswise along the height direction of the burner head 100.

[0059] In the above embodiment, multiple sets of first gas holes and multiple sets of first vent holes at the same height position in the inner perimeter 130 are arranged crosswise along the height direction of the burner head 100, so that the gas and the combustion-supporting gas are cross-mixed, further improving the mixing uniformity; at the same time, since the gas and the combustion-supporting gas enter the outer cavity 160 in opposite directions, the cross-arranged first gas holes and first vent holes can also prevent the gas from leaking out of the burner head 100 from the vent holes 151, increasing safety.

[0060] Specifically, the projection of a group of first gas vents at the same height onto the outer perimeter at a horizontal angle of 150 forms a curve. This curve is located at the midpoint between two adjacent groups of first vents at different heights, thereby further improving the uniformity of the distribution of gas vents 131 and vents 151.

[0061] In some embodiments, such as Figure 3 , Figure 5 As shown, multiple gas holes 131 in the vertical direction of the inner circumference 130 form a second gas hole group, and multiple groups of the second gas hole group are arranged along the circumference of the inner circumference 130; multiple vent holes 151 in the vertical direction of the outer circumference 150 form a second vent hole group, and multiple groups of the second vent hole group are arranged along the circumference of the outer circumference 150; the multiple groups of second gas hole groups and the multiple groups of second vent hole groups are arranged intersectingly along the circumference of the burner head 100.

[0062] In the above embodiment, multiple sets of second gas holes and multiple sets of second vent holes are arranged crosswise along the circumference of the burner head 100 at the same vertical column position in the inner perimeter 130, so that the gas and the combustion-supporting gas are cross-mixed, further improving the mixing uniformity; at the same time, since the gas and the combustion-supporting gas enter the outer cavity 160 in opposite directions, the cross-arranged second gas holes and second vent holes can also prevent the gas from leaking out of the burner head 100 from the vent holes 151, increasing safety.

[0063] Specifically, the projection of a group of second gas holes in the same vertical column onto the periphery 150 forms a straight line. This straight line is located in the middle of two adjacent groups of second vent holes in different vertical columns, thereby further improving the uniformity of the distribution of gas holes 131 and vent holes 151.

[0064] According to an embodiment of the present invention, another aspect also provides a gasification device, such as... Figure 6 , Figure 7 , Figure 8 As shown, the gas device includes: a housing 200, a burner head 100 according to the above embodiment, a gas chamber 300, and a gas delivery assembly 400.

[0065] The housing 200 has a cavity inside, and the housing 200 has an opening 210 communicating with the cavity, and a plurality of first mounting holes 220 disposed opposite to the opening 210; the first ends 110 of a plurality of burners 100 are respectively fixedly connected to the plurality of first mounting holes 220; the gas chamber 300 is disposed in the cavity and communicates with the second ends 120 of the burners 100; the gas supply assembly 400 is fixedly connected to the housing 200 and communicates with the gas chamber 300; the gas is input into the gas chamber 300 by the gas supply assembly 400, and enters the inner cavity 140 through the second ends 120 of the burners 100 through the gas chamber 300, and enters the outer cavity 160 of the burners 100 through the combustion hole of the burners 100; the combustion-supporting gas enters the cavity through the opening 210 and enters the outer cavity 160 of the burners 100 through the vent hole 151 of the burners 100, so that the gas and the combustion-supporting gas are mixed in the outer cavity 160. In the above embodiments, the burner head 100 is provided in multiple units in the housing 200 so that the fuel and combustion-supporting gas are mixed and combusted through microchannels, miniaturizing the combustion reaction zone and generating multiple micro-diffusion small flames. This reduces the residence time of the fuel and combustion-supporting gas in the hot flame area, thereby significantly reducing nitrogen oxide emissions. At the same time, it can also prevent backfire, ensuring the safety and operational stability of the gas device.

[0066] Specifically, traditional gas combustion devices have a large combustion area, while microchannel mixing, by introducing gas and combustion-supporting gas through tiny channels, significantly reduces the mixing scale of the gas and combustion-supporting gas, making the combustion process more concentrated and efficient. Due to the small channel size, the flame geometry is limited, and the combustion reaction is more concentrated in a localized area, avoiding the high temperature and inhomogeneity of large-scale flames in traditional gas combustion devices. The small volume of the microchannels shortens the residence time of the mixed gas, reducing the contact time between the gas and combustion-supporting gas in the high-temperature zone, thereby suppressing the formation of nitrogen oxides. In the micro-reaction zone, the gas and combustion-supporting gas mix more uniformly, avoiding localized high temperatures or oxygen-deficient areas. Under microchannel conditions, the flame cannot form a stable reverse propagation, thus suppressing backfire.

[0067] Furthermore, such as Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown, the first ends 110 of the multiple burner heads 100 are respectively fixedly connected to the multiple first mounting holes 220 on the housing 200; the multiple gas supply pipes 410 of the gas supply assembly 400 are respectively fixedly connected to the multiple second mounting holes 230 of the housing 200, and the gas supply pipes 410 extending into the housing 200 are fixedly connected to and communicate with the second gas passage holes 320 of the gas chamber 300; the second ends 120 of the multiple burner heads 100 are respectively fixedly connected to and communicate with the multiple first gas passage holes 310 of the gas chamber 300.

[0068] Furthermore, each burner head 100 has a burner nozzle 500 fixedly connected to its first end 110. The burner nozzle 500 is used to maintain the flame shape and make the flame jet.

[0069] In some embodiments, such as Figure 6 , Figure 7 As shown, there are multiple gas chambers 300, which are spaced apart in the chamber; the combustion-supporting gas enters the chamber through the opening 210 and flows to the outside of the periphery 150 of the burner head 100 through the gap between two gas chambers 300; the gas delivery assembly 400 includes multiple gas delivery pipes 410, which are connected to the multiple gas chambers 300 one by one.

[0070] In the above embodiment, the gap between the two gas chambers 300 provides an intake space for the combustion-supporting gas to be introduced into the chamber and reach the outside of the periphery 150 of the burner head 100; the multiple gas supply pipes 410 of the gas supply assembly 400 are connected to the multiple gas chambers 300 one by one, thereby supplying gas to the multiple burner heads 100 respectively.

[0071] Specifically, multiple gas chambers 300 are arranged sequentially in the cavity of the housing 200 near the opening 210. The combustion-supporting gas enters the cavity through the opening 210, and there is a gap between two gas chambers 300, or a gap between the gas chamber 300 and the inner wall of the housing 200, to flow to the outside of the periphery 150 of the burner head 100, so that the combustion-supporting gas can enter the outer cavity 160 through the vent hole 151 on the periphery 150.

[0072] Furthermore, such as Figure 11 As shown, the gas delivery assembly 400 also includes a gas distribution rod 420. The bottom of the gas distribution rod 420 is provided with a main connector, and the upper part is provided with multiple interfaces 421 that communicate with the main connector. Multiple gas delivery pipes 410 are fixedly connected to and communicate with the multiple interfaces 421. Gas enters the gas distribution rod 420 from the main connector, passes through the gas distribution rod, enters the multiple gas delivery pipes 410 through the multiple interfaces 421, and then enters the corresponding gas chamber 300.

[0073] In some embodiments, such as Figure 7 , Figure 9 , Figure 10 As shown, multiple burner heads 100 are arranged in a matrix, and a row of multiple burner heads 100 forms a burner head group; the gas chamber 300 is provided with multiple first air passage holes 310, and the multiple first air passage holes 310 form a row of air passage hole groups or multiple rows of air passage hole groups; when the gas chamber 300 is provided with a row of air passage hole groups, the multiple first air passage holes 310 in the row of air passage hole groups are connected one-to-one with the multiple burner heads 100 in a group of burner heads; when the gas chamber 300 is provided with multiple rows of air passage hole groups, the multiple first air passage holes 310 in each row of air passage hole groups are connected one-to-one with the multiple burner heads 100 in each group of burner heads.

[0074] In the above embodiments, the effects of one-row fire, two-row fire, four-row fire and six-row fire can be achieved through the first air passage 310 with different numbers of rows in the gas chamber 300, providing a variety of flame options.

[0075] Specifically, in this embodiment, a gas chamber 300 is provided with a row of air passages. Figure 9 As shown, the gas chamber 300 is equipped with two rows of air passages. Figure 10 As shown. Figure 7 As shown, there are two gas chambers 300 with one row of vent holes and two gas chambers 300 with two rows of vent holes. The gas supply assembly 400 is connected to the four gas chambers 300 respectively through four gas supply pipes 410. When one row of flames needs to be supplied, one of the gas chambers 300 with one row of vent holes is activated; when two rows of flames need to be supplied, one of the gas chambers 300 with two rows of vent holes is activated; when four rows of flames need to be supplied, two of the gas chambers 300 with two rows of vent holes are activated; when six rows of flames need to be supplied, all four gas chambers 300 are activated.

[0076] According to an embodiment of the present invention, in another aspect, a gas device is also provided, which includes: the gas device and the air duct of the above embodiments.

[0077] The air duct is connected to the opening 210 of the housing 200 in the gas device, and is used to introduce the combustion-supporting gas into the chamber of the housing 200.

[0078] In the above embodiment, an air duct is provided that communicates with the opening 210 of the housing 200 in the gas device. The combustion-supporting gas is introduced into the chamber of the housing 200 through the air duct so that the combustion-supporting gas can be mixed with the gas in the burner head 100 and then burned.

[0079] Specifically, gas equipment also includes a casing, heat exchange system, control system, and detection system.

[0080] Furthermore, gas-fired equipment can include water heaters, wall-hung boilers, etc.

[0081] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A combustion head, characterized in that, The combustion head (100) has a first end (110) and a second end (120) disposed opposite to each other, and the combustion head (100) includes: The inner circumference (130) is closed on one side near the first end (110) and open on one side near the second end (120). An inner cavity (140) is formed inside the inner circumference (130), and the inner circumference (130) is provided with a gas hole (131) communicating with the inner cavity (140). The outer periphery (150) is set as the outer periphery of the inner periphery (130). The outer periphery (150) is closed between the inner periphery (130) and the side near the second end (120), and is open between the side near the first end (110). An outer cavity (160) is formed between the outer periphery (150) and the inner periphery (130). The outer periphery (150) is provided with a vent (151) communicating with the outer cavity (160). The gas enters the inner cavity (140) from the second end (120) and enters the outer cavity (160) through the gas hole (131). The combustion-supporting gas outside the periphery (150) enters the outer cavity (160) through the vent hole (151) so that the gas and the combustion-supporting gas are mixed in the outer cavity (160). The ratio of the air passage area of ​​the gas vent (131) to the air passage area of ​​the ventilation vent (151) is equal to the stoichiometric ratio of the gas and the combustion-supporting gas for complete combustion.

2. The combustion head according to claim 1, characterized in that, When the fuel gas is methane and the combustion-supporting gas is air, the stoichiometric ratio of the methane to the air for complete combustion is 1:9.52, and the ratio of the air passage area of ​​the fuel gas hole (131) to the air passage area of ​​the vent hole (151) is 1:9.

52.

3. The combustion head according to claim 2, characterized in that, Both the gas outlet (131) and the vent (151) are circular holes, and the ratio of the diameter of the gas outlet (131) to the diameter of the vent (151) is [ratio missing].

4. The combustion head according to any one of claims 1-3, characterized in that, The gas vent (131) is provided in multiple directions along the circumference and / or height of the inner perimeter (130), and the ventilation vent (151) is provided in multiple directions along the circumference and / or height of the outer perimeter (150). The number of gas vents (131) and ventilation vents (151) are equal.

5. The combustion head according to claim 4, characterized in that, The combustion gas and the combustion-supporting gas are mixed in the outer cavity (160) and escape from the first end (110) of the burner head (100) for combustion; The gas vent (131) is inclined toward the first end (110) on the side near the outer cavity (160), and the vent (151) is inclined toward the first end (110) on the side near the outer cavity (160).

6. The combustion head according to any one of claims 1-3 and 5, characterized in that, The multiple gas holes (131) at the same height position of the inner perimeter (130) form a first gas hole group, and the first gas hole group is provided in multiple groups along the height direction of the inner perimeter (130); The multiple ventilation holes (151) at the same height position of the periphery (150) form a first ventilation hole group, and the first ventilation hole group is provided with multiple groups along the height direction of the periphery (150); Multiple sets of the first gas combustion port group and multiple sets of the first vent port group are arranged crosswise along the height direction of the combustion head (100).

7. The burner head according to any one of claims 1-3 and 5, characterized in that, The multiple gas holes (131) in the vertical direction of the inner circumference (130) form a second gas hole group, and the second gas hole group is provided in multiple groups along the circumference of the inner circumference (130); The plurality of ventilation holes (151) in the vertical direction of the periphery (150) form a second ventilation hole group, and the second ventilation hole group is provided in multiple groups along the circumference of the periphery (150); Multiple sets of second gas vents and multiple sets of second vents are arranged crosswise along the circumference of the burner head (100).

8. A gas-fired device, characterized in that, The gas-fired device includes: The housing (200) has a cavity inside, and the housing (200) has an opening (210) communicating with the cavity, and a plurality of first mounting holes (220) opposite to the opening (210); The combustion head (100) according to any one of claims 1-7, wherein the first ends (110) of the plurality of combustion heads (100) are respectively fixedly connected to the plurality of first mounting holes (220); A gas chamber (300) is disposed in the cavity and communicates with the second end (120) of the burner head (100); A gas delivery assembly (400) is fixedly connected to the housing (200) and communicates with the gas chamber (300); Gas is fed into the gas chamber (300) by the gas delivery assembly (400), and enters the inner cavity (140) through the second end (120) of the burner head (100) via the gas chamber (300), and enters the outer cavity (160) of the burner head (100) through the combustion hole of the burner head (100); combustion-supporting gas enters the chamber through the opening (210), and enters the outer cavity (160) of the burner head (100) through the vent hole (151) of the burner head (100) so that the gas and the combustion-supporting gas are mixed in the outer cavity (160).

9. The gas device according to claim 8, characterized in that, The gas chamber (300) is provided in multiple locations, and the multiple gas chambers (300) are spaced apart in the chamber; the combustion-supporting gas enters the chamber through the opening (210) and flows to the outside of the periphery (150) of the burner head (100) through the gap between two of the gas chambers (300); The gas delivery assembly (400) includes a plurality of gas delivery pipes (410), and the plurality of gas delivery pipes (410) are connected to the plurality of gas chambers (300) in a one-to-one correspondence.

10. The gas device according to claim 8 or 9, characterized in that, The multiple burners (100) are arranged in a matrix, and a row of multiple burners (100) forms a burner group; the gas chamber (300) is provided with multiple first air passages (310), and the multiple first air passages (310) form a row of air passage groups or multiple rows of air passage groups; When the gas chamber (300) is provided with a row of air passage holes, the plurality of first air passage holes (310) in the row of air passage holes are connected one-to-one with the plurality of burners (100) in the group of burners. When the gas chamber (300) is provided with multiple rows of air passage holes, the multiple first air passage holes (310) in each row of air passage holes are connected one-to-one with the multiple burners (100) in each group of burners.

11. A gas-fired device, characterized in that, The gas equipment includes: The gas device according to any one of claims 8-10; The air duct is connected to the opening (210) of the housing (200) in the gas device and is used to introduce the combustion-supporting gas into the chamber of the housing (200).

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