Flow uniformizing structure and combustor comprising same

Abstract

The application discloses a flow uniformizing structure and a combustor comprising the same, which is arranged in a mixing chamber, the mixing chamber is provided with an ejector pipe, and the flow uniformizing structure comprises a flow uniformizing plate, the flow uniformizing plate is arranged between a fire hole of the combustor and an inlet of the ejector pipe, two sides of the flow uniformizing plate are sealingly connected with inner walls of the mixing chamber, an outlet is arranged on the flow uniformizing plate, the outlet is arranged along a radial direction of the mixing chamber, the outlet is arranged at intervals from the inlet of the ejector pipe, an arc of the outlet is θ, θ is in the range of (60°, 150°), a line connecting a center of the outlet and a center of the mixing chamber and a line connecting a center of the inlet of the ejector pipe and the center of the mixing chamber form an included angle α, and α is in the range of (θ / 2, 115°); or, the arc of the outlet is γ, γ is in the range of (30°, 45°), the line connecting the center of the outlet and the center of the mixing chamber and the line connecting the center of the inlet of the ejector pipe and the center of the mixing chamber form an included angle β, and β is in the range of (γ / 2, 60°).

Description

Technical Field

[0001] This invention relates to the field of burner technology, and in particular to a uniform flow structure and a burner incorporating the same. Background Technology

[0002] High-power, top-intake stoves with anti-dry-burning features are becoming increasingly popular, but due to insufficient research, quality issues frequently arise at the user end. These include uneven flame length, load attenuation, excessive smoke, and frequent false triggering of dry-burning warnings. Current technologies generally address uneven flame length and excessive smoke by adjusting the intensity of the burner holes or nozzles. Additionally, a smoke baffle ring on the inner burner cap can be used to mitigate excessive smoke. However, these methods do not address the root cause of the problem and their effectiveness is limited. Furthermore, because top-intake stoves experience significant load attenuation, the only solution is to increase the initial load, which wastes gas and results in a poor user experience. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of large load attenuation and poor user experience of the existing technology of top air intake stoves, and to provide a uniform flow structure and a burner containing the same.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A flow equalization structure is provided, wherein the flow equalization structure is disposed in the mixing chamber of a burner, the mixing chamber is connected to an ejector tube, the flow equalization structure includes a flow equalization plate, the flow equalization plate is disposed between the burner's flame hole and the inlet of the ejector tube, the two sides of the flow equalization plate are respectively sealed to the inner wall of the mixing chamber, the flow equalization plate is provided with an outlet, the outlet is disposed along the radial direction of the mixing chamber, the outlet is spaced apart from the inlet of the ejector tube, the arc of the outlet is θ, θ∈(60°,150°), the line connecting the center of the outlet and the center of the mixing chamber forms an angle α with the line connecting the center of the inlet of the ejector tube and the center of the mixing chamber, and α∈(θ / 2,115°);

[0006] Alternatively, the arc of the outlet is γ, γ∈(30°,45°), and the line connecting the center of the outlet and the center of the mixing chamber forms an angle β with the line connecting the center of the inlet of the ejector tube and the center of the mixing chamber, β∈(γ / 2,60°).

[0007] In this design, a flow equalization plate is used to prevent the gas flowing from the injector inlet from directly exiting the burner orifice near the injector inlet into the mixing chamber, thus avoiding inconsistent flame lengths and excessively rapid combustion load decay in the burner orifices far from the injector inlet. Furthermore, the outlet of the flow equalization plate is spaced apart from the injector inlet. After flowing radially around the mixing chamber, the gas only flows through the outlet to the burner orifice. This ensures that the gas, after exiting through the outlet, can fill all positions within the mixing chamber due to the distance between the injector inlet and the flow equalization plate outlet. Specifically, along the mixing chamber... An angle α or angle β is formed between the inlet of the radial ejector tube and the outlet of the flow equalizer. The gas in the mixing chamber flows out from the flame hole when it is evenly mixed with the air, thereby reducing the possibility of excessive flue gas due to incomplete combustion during the use of the burner. When the flue gas meets the standards, it can also reduce the need for flue gas to heat the anti-dry-burn probe, avoid false triggering of the anti-dry-burn probe alarm, and maintain the color change of the anti-dry-burn probe to keep the product aesthetically pleasing. Compared with adjusting the flame hole intensity or nozzle and increasing the initial load, it uses less gas, has a lower cost, and solves the above problems at the root.

[0008] Preferably, the outlet is spaced apart from the inlet of the ejector tube in a clockwise direction.

[0009] In this scheme, by setting the outlet at intervals with the inlet of the ejector tube in a clockwise direction, corresponding to the geographical environment of the Northern Hemisphere, and based on the Earth's rotation, according to the right-hand law, when the outlet is set in a clockwise direction to supply gas to the burner holes, the gas fills all positions of the mixing chamber. The combustion load of the corresponding burner holes meets the user's needs. This scheme is suitable for each burner hole arranged in a ring, making its firepower more concentrated, thereby reducing gas consumption and improving the energy-saving effect of the uniform flow structure.

[0010] Preferably, the flow equalization structure further includes a first baffle, which is arranged vertically and located on the top surface of the flow equalization plate, for dividing the mixing chamber into a first chamber and a second chamber. The outer ring flame hole of the burner communicates with the first chamber, and the inner ring flame hole of the burner communicates with the second chamber.

[0011] In this scheme, a first baffle is set to form a first chamber and a second chamber in the mixing chamber. The first chamber and the second chamber correspond to different burner holes, so that the gas enters the corresponding burner hole from the corresponding chamber. This avoids a series of problems caused by uneven mixing of gas when multiple burner holes correspond to the same mixing chamber and flow to different burner holes.

[0012] Preferably, the first chamber is provided with multiple outlets and is connected to multiple outlets. When the angle between the outlet near the inlet of the ejector tube and the inlet of the ejector tube is β, the angle between the outlet near the inlet of the ejector tube and another adjacent outlet is β+70°.

[0013] The second chamber is connected to a plurality of outlets. When the angle between the outlet near the inlet of the ejector tube and the inlet of the ejector tube is α, the angle between the outlet near the inlet of the ejector tube and another adjacent outlet is 210°.

[0014] In this scheme, by providing multiple outlets in the first chamber and multiple outlets in the second chamber, the gas can meet the user's required gas volume when entering the first and second chambers through the flow equalization plate, thus avoiding the flow equalization plate blocking the inlet of the injector and affecting the combustion load of the burner.

[0015] Preferably, the outlets connected to the first chamber are spaced apart and located on both sides of the outlets connected to the second chamber and away from the inlet of the ejector tube.

[0016] In this design, the outlet in the second chamber, located away from the ejector tube inlet, is positioned between the two outlets of the first chamber to meet the combustion load of the corresponding burner hole in the first chamber.

[0017] Preferably, the dimensions of two adjacent outlets are different, wherein the outlet size closer to the inlet of the ejector tube is smaller than the outlet size farther from the inlet of the ejector tube.

[0018] In this design, by setting a smaller outlet size near the inlet of the ejector tube, the high-pressure gas at the inlet of the ejector tube can have its pressure reduced when entering the first or second chamber, thus preventing the flame from being too high near the inlet of the ejector tube. Similarly, by setting a larger outlet size away from the inlet of the ejector tube, the low-pressure gas can fully enter different positions in the first or second chamber when flowing to the outlet, thus filling the first or second chamber with gas and solving problems such as excessively rapid load decay during combustion.

[0019] Preferably, the flow equalization structure further includes a second baffle, which is disposed along the projection direction of the first baffle and located on the bottom surface of the flow equalization plate. The second baffle is disposed between the inlets of two adjacent ejector tubes. The side of the second baffle closer to the center of the mixing chamber is connected to the inlet of one of the ejector tubes, and the side of the second baffle farther from the center of the mixing chamber is connected to the inlet of the other ejector tube.

[0020] In this scheme, a second baffle is set to guide the inlet of one ejector tube into the first chamber, and the second baffle can also isolate the inlet of the other ejector tube, so as to prevent the amount of gas entering the first chamber from being too large and thus the amount of gas entering the second chamber cannot be guaranteed.

[0021] Preferably, the end of the second baffle is provided with a guide portion, the guide portion having an arc-shaped structure and the inlet of the ejector tube being located inside the guide portion and sealed to the guide portion.

[0022] In this solution, a guide section is provided to surround the corresponding ejector tube inlet, and the guide section is sealed to the ejector tube inlet to prevent gas leakage.

[0023] Preferably, the flow equalization structure further includes a third baffle, which is disposed above the flow equalization plate and arranged in a horizontal direction. One side of the third baffle is connected to the first baffle, and the third baffle is disposed at the outlet away from the inlet of the ejector tube.

[0024] In this scheme, a third baffle is set to correspond to the outlet setting of the inlet far away from the ejector tube, so as to avoid the gas pressure flowing into the first chamber or the second chamber from the inlet being too high and unable to fill the first chamber or the second chamber, and to ensure that the gas is mixed evenly before flowing out from the corresponding burner hole.

[0025] A burner includes an outer ring flame port and an inner ring flame port, the burner includes a flow equalization structure as described above, and the burner also has a middle ring flame port, both the middle ring flame port and the outer ring flame port being connected to a first chamber of the flow equalization structure.

[0026] In this design, the burner also includes a middle ring flame port. By connecting the middle ring flame port and the outer ring flame port together to the first chamber, the retrofit cost of the burner is reduced, while the rapid decay of the combustion load of the burner with inner, middle and outer rings is improved, and the firepower of the flame port combustion is more concentrated.

[0027] The positive and progressive effects of this invention are as follows: By setting a flow equalization plate to prevent the gas flowing out of the inlet of the ejector tube from flowing directly out of the flame hole near the inlet of the ejector tube into the mixing chamber, the flame length of the burner becomes inconsistent, and the combustion load of the flame hole far from the inlet of the ejector tube decays too quickly. Furthermore, by setting the outlet of the flow equalization plate and the inlet of the ejector tube at intervals, the gas flows radially around the mixing chamber and only flows to the flame hole through the outlet. This ensures that the gas can fill all positions in the mixing chamber after flowing out through the outlet, due to the distance between the inlet of the ejector tube and the outlet of the flow equalization plate. The gas in the mixing chamber flows out of the flame hole when it is evenly mixed with air, thereby reducing the occurrence of flue gas exceeding the standard due to incomplete combustion during the use of the burner. When the flue gas meets the standard, it can also reduce the need for flue gas to heat the anti-dry-burning probe, avoid false triggering of the anti-dry-burning probe alarm, and maintain the color change of the anti-dry-burning probe, thus maintaining the appearance of the product. Compared with adjusting the flame hole intensity or nozzle and increasing the initial load, it uses less gas, has lower cost, and solves the above problems at the root. Attached Figure Description

[0028] Figure 1 This is a perspective view of a flow uniform structure according to a preferred embodiment of the present invention.

[0029] Figure 2 This is a top view of a flow uniform structure according to a preferred embodiment of the present invention.

[0030] Figure 3 This is a bottom view of a flow uniform structure according to a preferred embodiment of the present invention.

[0031] Figure 4 This is a perspective view of a burner according to a preferred embodiment of the present invention.

[0032] Figure 5 This is a top view of a burner according to a preferred embodiment of the present invention.

[0033] Figure 6 This is a cross-sectional view of a burner according to a preferred embodiment of the present invention.

[0034] Figure 7 This diagram shows the positional relationship between the inlet and guide portion of the ejector tube according to a preferred embodiment of the present invention.

[0035] Figure 8 This diagram illustrates the positional relationship between the outlet and the ejector tube inlet in the first and second chambers of a preferred embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] Uniform flow structure 1

[0038] Flow equalizer 11

[0039] First baffle 12

[0040] First chamber 121

[0041] Second chamber 122

[0042] Second baffle 13

[0043] Guiding section 131

[0044] Third baffle 14

[0045] Export 111

[0046] included angle α

[0047] included angle β

[0048] Exit radian γ1

[0049] Exit radian γ2

[0050] Exit radian θ

[0051] Burner 100

[0052] Mixing chamber 101

[0053] ejector tube 102 Detailed Implementation

[0054] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0055] This embodiment provides a flow uniformity structure, the specific structure of which is as follows: Figure 1 , Figure 2 and Figure 3As shown, the uniform flow structure 1 is disposed in the mixing chamber 101 of the burner 100. The mixing chamber 101 and the burner cap of the burner 100 together form a closed cavity. The cavity is used to contain the gas. The burner cap is provided with flame holes, and the gas is used to supply the flame holes for combustion. This is the prior art and will not be described in detail here. An ejector tube 102 is connected to the mixing chamber 101. The inlet of the ejector tube 102 is the connection point between the ejector tube 102 and the mixing chamber 101 and is located at the bottom of the mixing chamber 101. The flow equalization structure 1 includes a flow equalization plate 11, which is disposed between the flame hole of the burner 100 and the inlet of the ejector tube 102. The flow equalization plate 11 is an annular flat plate and is arranged horizontally. The flow equalization plate 11 separates the flame hole from the inlet of the ejector tube 102, preventing the gas from flowing directly out of the flame hole near the inlet of the ejector tube 102 when it flows into the mixing chamber 101 from the inlet of the ejector tube 102. This avoids the flame height and load being inconsistent between the flame holes far from the inlet of the ejector tube 102 and the flame holes far from the inlet of the ejector tube 102. The two sides of the flow equalization plate 11 are respectively sealed to the inner wall of the mixing chamber 101, thereby improving the separation effect of the gas and preventing different flame holes on the burner cap from having different loads and being far from the ejector tube. In the event of excessively rapid load decay at the burner orifice of tube 102, and considering that the flow equalizer 11 is provided with an outlet 111, the outlet 111 is used to direct the gas flowing into the mixing chamber 101 from the inlet of ejector tube 102 through the outlet 111 to the burner orifice of the burner cap for combustion. The outlet 111 is arranged radially along the mixing chamber 101. In other words, the flow equalizer 11 at the inlet position of ejector tube 102 is actually a closed blocking structure. The flow equalizer 11 blocks the gas that just enters the mixing chamber 101 to reduce the gas pressure, preventing the gas from flowing directly to the burner orifice near the inlet of ejector tube 102 when the gas pressure is too high and there is no obstruction. In addition, by setting the outlet 111 at a distance from the inlet of ejector tube 102, the gas with reduced pressure can enter the space between the flow equalizer 11 and the burner orifice through the outlet 111, thereby supplying gas to the burner orifice. Specifically, as follows... Figure 5 , Figure 7 and Figure 8As shown, the center of the inlet of ejector 102 is marked with a dashed line, and the line connecting the center of outlet 111 and the center of mixing chamber 101 is marked with a solid line. Outlet 111 is a "U"-shaped groove. When the arc of the outlet is θ, in this embodiment θ∈(60°,150°), an angle α is formed between the line connecting the center of outlet 111 and the center of mixing chamber 101 and the line connecting the center of inlet of ejector 102 and the center of mixing chamber 101. The range of this angle α is α∈(θ / 2,115°). It can be understood that, starting from the inlet of ejector 102, when the gas enters the mixing chamber 101 and flows radially around the mixing chamber 101, it is blocked by the flow equalizer 11 to reduce its pressure. By setting an angle α between outlet 111 and inlet of ejector 102 along the radial direction of mixing chamber 101, the pressure of the gas is reduced. After entering the mixing chamber 101, the gas flows radially around the mixing chamber 101 and then flows only through the outlet 111 to the flame hole. This ensures that the gas, after exiting through the outlet 111, can fill all positions within the mixing chamber 101 due to the distance between the inlet of the ejector tube 102 and the outlet 111 of the flow equalizer 11. The gas in the mixing chamber 101, when evenly mixed with air, flows out through the flame hole, thereby reducing the possibility of incomplete combustion and excessive flue gas emissions during burner 100 operation. When the flue gas meets standards, it also reduces the need to heat the anti-dry-burn probe, preventing false triggering of the anti-dry-burn probe alarm and maintaining the probe's color, thus preserving the product's appearance. Compared to adjusting the flame hole intensity or nozzle, or increasing the initial load, this method uses less gas, is lower in cost, and solves the aforementioned problems at their source. The range of the included angle α has been determined through multiple experimental structural verifications; this is existing technology and will not be elaborated upon further here.

[0056] In another embodiment, when the arc of the outlet is γ, γ∈(30°, 45°), an angle β is formed between the line connecting the center of the outlet 111 and the center of the mixing chamber 101 and the line connecting the center of the inlet of the ejector tube 102 and the center of the mixing chamber 101. The range of this angle β is β∈(γ / 2, 60°). Both the aforementioned angles α and β can prevent the gas from flowing directly to the burner orifice and ensure the combustion load of the burner. The principle is the same, and it will be further explained below.

[0057] Furthermore, the outlet 111 is spaced apart from the inlet of the ejector tube 102 in a clockwise direction.

[0058] Specifically, such as Figure 2As shown, outlet 111 passes through flow equalization plate 11. The arc direction of the "U"-shaped groove is consistent with the arc direction of flow equalization plate 11. Taking the inlet of ejector tube 102 as the "zero point" in a clock, the setting direction of ejector tube 102 is internally tangent to the annular mixing chamber 101, and the inlet of ejector tube 102 is set in a clockwise direction. The outlet 111 and the inlet of ejector tube 102 are spaced apart in the clockwise direction. That is, when the gas flows to the right around the center of the mixing chamber 101, it is blocked by flow equalization plate 11 and continues to flow to the right and flows out from outlet 111. At this time, the outlet 111 and the inlet of ejector tube 102 maintain the above-mentioned included angle α or angle α. β, by setting the outlet 111 at intervals with the inlet of the ejector tube 102 in a clockwise direction, corresponding to the geographical environment of the burner 100 in the Northern Hemisphere, based on the Earth's rotation, according to the right-hand law, the clockwise setting of the outlet to supply gas to the flame holes is more in line with the gas flow law, avoiding the obstruction of gas flow by the Earth's rotation gravity, so that the gas flow rate meets the user's needs, the gas fills all positions of the mixing chamber 101, and the corresponding flame hole combustion load meets the user's needs. It is suitable for each flame hole arranged in a ring, so that the firepower is more concentrated, thereby reducing gas consumption and improving the energy-saving effect of the uniform flow structure 1.

[0059] Of course, in other embodiments, if the burner is located in the Southern Hemisphere, the outlet 111 can be set counterclockwise and spaced apart from the inlet of the ejector tube 102. The principle of setting is the same as the clockwise setting described above, and will not be elaborated further here.

[0060] In this embodiment, the flow equalization structure 1 further includes a first baffle 12. The first baffle 12 is arranged vertically and located on the top surface of the flow equalization plate 11, used to divide the mixing chamber 101 into a first chamber 121 and a second chamber 122. The first baffle 12 is arranged perpendicular to the flow equalization plate 11 to avoid excessive size difference between the first chamber 121 and the second chamber 122, and to prevent the gas from flowing into the combustion chamber from the first chamber 121 or the second chamber 122 due to the first baffle 12 being tilted. When the burner 100 encounters resistance, the first chamber 121 is located on the side away from the first baffle 12 in the mixing chamber 101, while the second chamber 122 is located on the side closer to the first baffle 12 in the mixing chamber 101. The outer ring flame hole of the burner 100 communicates with the first chamber 121, and the inner ring flame hole of the burner 100 communicates with the second chamber 122. Two ejector tubes 102 are provided, one of which communicates with the first chamber 121, and the other communicates with the second chamber 122. By setting the first chamber 121 and the second chamber 122 to be non-communicating with each other to correspond to different burner cap flame holes, the gas entering the first chamber 121 is no longer affected by the second chamber 122. This allows for more complete combustion of the flame holes corresponding to the first chamber 121, ensuring a uniform gas mixture and maintaining the combustion load. This avoids the situation where the load rapidly decreases, resulting in a poor user experience, and prevents a series of problems caused by uneven gas mixing when multiple flame holes correspond to the same mixing chamber. The effect of the second chamber 122 formed by the first baffle 12 is the same as that of the first chamber 121, and will not be elaborated further here.

[0061] In this embodiment, as Figure 8As shown, multiple outlets 111 are provided, and the first chamber 121 is correspondingly connected to multiple outlets 111. This embodiment describes two outlets 111 connected to the first chamber 121, but the number is not limited. The second chamber 122 is correspondingly connected to multiple outlets 111. This embodiment describes two outlets 111 connected to the second chamber 122, but the number is not limited. Taking the first chamber 121 as an example, the arc γ of the outlet 111 near the entrance of the ejector tube 102 in the first chamber 121 is ∈ (30°, 45°). At this time, the center of the outlet 111 near the entrance of the ejector tube 102 and the mixture The angle β between the line connecting the center of the gas chamber 101 and the line connecting the center of the inlet of the ejector tube 102 and the center of the mixing chamber 101 is β∈(γ / 2,60°). Furthermore, the angle between the outlet 111 in the first chamber 121 that is far from the inlet of the ejector tube 102 and the outlet 111 that is close to the inlet of the ejector tube 102 is 70°. By providing multiple outlets 111 in the first chamber 121, the amount of gas required by the user can be met when the gas enters the first chamber 121 and the second chamber 122 through the flow equalization plate 11, thus avoiding the obstruction of the inlet of the ejector tube 102 by the flow equalization plate 11 and affecting the combustion load of the burner 100.

[0062] Furthermore, since this embodiment also includes a second chamber 122, and multiple outlets 111 are provided within the second chamber 122, the principle of which is the same as that in the first chamber 121, the arc θ of the outlet 111 near the inlet of the ejector tube 102 in the second chamber 122 is θ, θ∈(60°,150°). At this time, the angle α between the line connecting the center of the outlet 111 near the inlet of the ejector tube 102 and the center of the mixing chamber 101 and the line connecting the center of the inlet of the ejector tube 102 and the center of the mixing chamber 101 is α, α∈(θ / 2,115°). Moreover, the angle between the outlet 111 far from the inlet of the ejector tube 102 and the outlet 111 near the inlet of the ejector tube 102 in the second chamber 122 is 210°. The interval between the two outlets 111 is with its center as the starting point and the ending point, which will not be elaborated further here.

[0063] It is understandable that the multiple outlets 111 connected to the first chamber 121 are spaced apart, and the multiple outlets 111 connected to the second chamber 122 are spaced apart. By increasing the number of outlets 111 connected to the first chamber 121 and the number of outlets 111 connected to the second chamber 122, the amount of gas entering the first chamber 121 or the second chamber 122 is sufficient to supply the burner holes for combustion and ensure the combustion load.

[0064] like Figure 8As shown, in this embodiment, the dimensions of two adjacent outlets 111 are different. Specifically, the dimensions of two adjacent outlets 111 connected to the first chamber 121 are different, or the dimensions of two adjacent outlets 111 connected to the second chamber 122 are different. This embodiment takes two adjacent outlets 111 connected to the first chamber 121 as an example. The size of the outlet 111 closer to the inlet of the ejector tube 102 is smaller than the size of the outlet 111 farther from the inlet of the ejector tube 102. The arc of the outlet 111 closer to the inlet of the ejector tube 102 is γ1, and the arc of the outlet 111 farther from the inlet of the ejector tube 102 is γ2. γ2 is greater than γ1, γ2∈(40°,60°), and (γ1+γ2) / 2<70°. By keeping the arc of the two outlets 111 connected to the first chamber 121 within the above range, the combustion load when supplying gas to the fire hole can be effectively guaranteed to meet the user's requirements.

[0065] The outlet 111 near the inlet of ejector tube 102 is smaller in both width and length than the outlet 111 far from the inlet of ejector tube 102. By setting the outlet 111 near the inlet of ejector tube 102 to be smaller, the high-pressure gas at the inlet of ejector tube 102 can reduce its pressure when entering the first chamber 121 or the second chamber 122, thus preventing the flame of the burner hole connected to the first chamber 121 or the second chamber 122 and near the inlet of ejector tube 102 from being too high. Similarly, the outlet 111 far from the inlet of ejector tube 102 is set to be larger, so that the low-pressure gas flowing to the outlet 111 can fully enter different positions of the first chamber 121 or the second chamber 122, so that the gas fills the first chamber 121 or the second chamber 122, thereby solving the problem of excessively rapid load decay during combustion.

[0066] It is understandable that, since the first chamber 121 is located on the outer periphery of the second chamber 122, the outlet 111 in the first chamber 121 and the outlet in the second chamber 122 will have a positional relationship in the radial direction of the mixing chamber 101. Specifically, when the outlet 111 connected to the inlet of the second chamber 122 and away from the ejector tube 102 and the outlet 111 close to the inlet of the ejector tube 102 form a 210° angle, the outlet 111 connected to the inlet of the second chamber 122 and away from the ejector tube 102 is located between two adjacent outlets 111 connected to the first chamber 121. At this time, the outlet 111 connected to the inlet of the second chamber 122 and away from the ejector tube 102 satisfies the following in the radial direction of the mixing chamber 101: The error within the range of (α+210°)-180°-θ / 2≈β+γ1 / 2, or (α+210°)-180°+θ / 2≈β+70°, or (α+210°)-180°≈(β+70°)-γ2 / 2, is within ±≤10°. This range ensures that when the outlet 111, which connects to the second chamber 122 and is away from the ejector tube 102, is located between two adjacent outlets 111 connected to the first chamber 121, the flame height of the inner and outer ring flame holes corresponding to the first and second chambers 121 remains consistent during combustion. This avoids the situation where the combustion load decays too quickly due to inconsistent flame heights between the inner and outer ring flame holes during combustion.

[0067] like Figure 1 , Figure 3 and Figure 6As shown, in this embodiment, the flow equalization structure 1 further includes a second baffle 13. The second baffle 13 is arranged along the projection direction of the first baffle 12 and is located on the bottom surface of the flow equalization plate 11. The second baffle 13 is also a flat plate, and the other end of the second baffle 13 is sealed to the inner wall of the mixing chamber 101. That is, the second baffle 13 is also arranged perpendicular to the flow equalization plate 11. The space on the top surface of the flow equalization plate 11 is divided by the first baffle 12 to form a first chamber 121 and a second chamber 122. Corresponding to the first chamber 121 and the second chamber 122, the space on the bottom surface of the flow equalization plate 11 is divided by the second baffle 13 into two cavities to correspond to the first chamber 121 and the second chamber 122. The second baffle 13 is arranged between the inlets of two adjacent ejector tubes 102. The side of the second baffle 13 near the center of the mixing chamber 101 is connected to the inlet of one of the ejector tubes 102. That is, the cavity corresponding to the first chamber 121 is connected to the inlet of the ejector tube 102 by the second baffle 13. Plate 13 achieves a sealed connection with the inlet of ejector tube 102, while the side of the second baffle 13 away from the center of the mixing chamber 101 is connected to the inlet of another ejector tube 102. That is, the cavity of the corresponding second chamber 122 is sealed with the inlet of another ejector tube 102 through the second baffle 13. The gas released by the two ejector tubes 102 is blocked by the second baffle 13 and is not connected to each other, so as to prevent gas from mixing into the first chamber 121 or the second chamber 122 when a single ejector tube 102 is opened, which would cause the corresponding burner hole of the first chamber 121 or the second chamber 122 to burn and affect the actual user experience. In addition, by setting the second baffle 13, the inlet of one ejector tube 102 is guided into the first chamber 121, and the second baffle 13 can also isolate the inlet of the other ejector tube 102, so as to prevent the amount of gas entering the first chamber 121 from being too large and thus the amount of gas entering the second chamber 122 cannot be guaranteed.

[0068] In this embodiment, as Figure 1 and Figure 3 As shown, the end of the second baffle 13 is provided with a guide portion 131. The guide portion 131 has an arc-shaped structure and the inlet of the ejector tube 102 is located inside the guide portion 131 and is sealed to the guide portion 131.

[0069] Specifically, the guide portion 131 has an arc-shaped structure on the side near the inlet of the ejector tube 102 to match the inlet shape of the ejector tube 102, from... Figure 3Looking upwards, the overall structure of the guide section 131 is also arc-shaped to completely surround the inlet of the ejector tube 102, preventing gas from flowing out. Through the cooperation of the second baffle 13 and the guide section 131, the gas flows clockwise when entering the cavity, and sequentially flows into the first chamber 121 through the outlet 111 near the inlet of the ejector tube 102 and the outlet 111 away from the inlet of the ejector tube 102. Similarly, the gas flowing into the ejector tube 102 in the other cavity separated by the second baffle 13 flows through the outlet 111 near the inlet of the ejector tube 102. The gas flows into the second chamber 122 from the inlet outlet 111 of the ejector tube 102 and the outlet 111 away from the inlet of the ejector tube 102. The gas from the two ejector tubes 102 is separated by the second baffle 13 and the guide part 131, so that the amount of gas entering the first chamber 121 and the second chamber 122 is guaranteed. By providing the guide part 131 to surround the corresponding ejector tube 102 inlet, the guide part 131 is sealed to the inlet of the ejector tube 102 to prevent gas leakage to the other chamber, thereby reducing the uneven flame length.

[0070] In other embodiments, the guide portion 131 may also be a flat plate, that is, the flat plate surrounds the inlet of the corresponding ejector tube 102, thereby separating the two ejector tubes 102 to the corresponding first chamber 121 and second chamber 122. This is prior art and will not be described in detail here.

[0071] In this embodiment, the flow equalization structure 1 further includes a third baffle 14, which is disposed above the flow equalization plate 11 and arranged in a horizontal direction. One side of the third baffle 14 is connected to the first baffle 12. The third baffle 14 is a flat plate and is disposed at the outlet 111 corresponding to the inlet away from the ejector tube 102. Specifically, because the size of the outlet 111 at the inlet far from the ejector tube 102 is larger than that at the outlet 111 near the inlet of the ejector tube 102, the amount of gas flowing out from the larger outlet 111 is correspondingly greater than that from the smaller outlet 111. By setting a third baffle 14 to correspond to the outlet 111 at the inlet far from the ejector tube 102, the pressure of the gas flowing into the first chamber 121 or the second chamber 122 from this inlet is too high and cannot fill the first chamber 121 or the second chamber 122. This prevents the gas from flowing directly out of the burner hole at the inlet far from the ejector tube 102, which would cause inconsistent flame lengths in the burner 100, and the burner hole near the inlet of the ejector tube 102, which would cause the combustion load to decay too quickly. This ensures that the gas is mixed evenly before flowing out from the corresponding burner hole.

[0072] like Figure 4As shown, this embodiment also provides a burner 100, which includes an outer ring flame hole and an inner ring flame hole, as well as the above-mentioned flow equalization structure 1. In addition, the burner 100 also has a middle ring flame hole, which is located between the outer ring flame hole and the inner ring flame hole. Both the middle ring flame hole and the outer ring flame hole are connected to the first chamber 121 of the flow equalization structure 1.

[0073] Specifically, the middle and outer ring flame holes on the burner cap are connected to the first chamber 121, while the inner ring flame hole is connected to the second chamber 122 separately. This reduces the number of baffles in the uniform flow structure 1 and lowers the modification cost of the burner 100. At the same time, the excessively rapid decay of the combustion load of the burner 100 with inner, middle, and outer rings is improved, and the firepower of the flame holes is more concentrated. Compared with adjusting the intensity of the flame holes or nozzles and increasing the initial load, it uses less gas and has a lower cost, and solves the above problems at the root.

[0074] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A flow equalization structure, wherein the flow equalization structure is disposed in the mixing chamber of a burner, and an ejector tube is connected to the mixing chamber, characterized in that, The flow equalization structure includes a flow equalization plate disposed between the burner's flame port and the inlet of the ejector tube. The two sides of the flow equalization plate are respectively sealed to the inner wall of the mixing chamber. An outlet is provided on the flow equalization plate, which is arranged along the radial direction of the mixing chamber. The outlet is spaced apart from the inlet of the ejector tube. The arc of the outlet is θ, θ∈(60°,150°). The line connecting the center of the outlet and the center of the mixing chamber forms an angle α with the line connecting the center of the inlet of the ejector tube and the center of the mixing chamber, and α∈(θ / 2,115°). Alternatively, the arc of the outlet is γ, γ∈(30°,45°), and the line connecting the center of the outlet and the center of the mixing chamber forms an angle β with the line connecting the center of the inlet of the ejector tube and the center of the mixing chamber, β∈(γ / 2,60°).

2. The uniform flow structure as described in claim 1, characterized in that, The outlet is spaced apart from the inlet of the ejector tube in a clockwise direction.

3. The uniform flow structure as described in claim 1, characterized in that, The flow equalization structure further includes a first baffle, which is arranged vertically and located on the top surface of the flow equalization plate, for dividing the mixing chamber into a first chamber and a second chamber. The outer ring flame hole of the burner is connected to the first chamber, and the inner ring flame hole of the burner is connected to the second chamber.

4. The uniform flow structure as described in claim 3, characterized in that, The first chamber is connected to multiple outlets. When the angle between the outlet near the inlet of the ejector tube and the inlet of the ejector tube is β, the angle between the outlet near the inlet of the ejector tube and another adjacent outlet is β+70°. The second chamber is connected to a plurality of outlets. When the angle between the outlet near the inlet of the ejector tube and the inlet of the ejector tube is α, the angle between the outlet near the inlet of the ejector tube and another adjacent outlet is 210°.

5. The uniform flow structure as described in claim 4, characterized in that, The outlets connected to the first chamber are spaced apart and located on both sides of the outlets connected to the second chamber and away from the inlet of the ejector tube.

6. The uniform flow structure as described in claim 5, characterized in that, The dimensions of two adjacent outlets are different, wherein the outlet closer to the inlet of the ejector tube is smaller than the outlet further away from the inlet of the ejector tube.

7. The uniform flow structure as described in claim 3, characterized in that, The flow equalization structure further includes a second baffle. The second baffle is arranged along the projection direction of the first baffle and is located on the bottom surface of the flow equalization plate. The second baffle is arranged between the inlets of two adjacent ejector tubes. The side of the second baffle closer to the center of the mixing chamber is connected to the inlet of one of the ejector tubes, and the side of the second baffle farther from the center of the mixing chamber is connected to the inlet of the other ejector tube.

8. The uniform flow structure as described in claim 7, characterized in that, The second baffle is provided with a guide portion at its end. The guide portion has an arc-shaped structure and the inlet of the ejector tube is located inside the guide portion and is sealed to the guide portion.

9. The uniform flow structure as described in claim 6, characterized in that, The flow equalization structure also includes a third baffle, which is disposed above the flow equalization plate and arranged in a horizontal direction. One side of the third baffle is connected to the first baffle, and the third baffle is disposed at the outlet away from the inlet of the ejector tube.

10. A burner, the burner comprising an outer ring flame port and an inner ring flame port, characterized in that, The burner includes a flow equalization structure as described in any one of claims 1-9, and the burner further has a middle ring flame hole, both the middle ring flame hole and the outer ring flame hole being connected to the first chamber of the flow equalization structure.

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