Upper air inlet burner

Abstract

The utility model provides an upper air inlet burner which comprises an outer ring injection pipe and a flow guide wall structure, and the flow guide wall structure is arranged on the side of an air inlet of the outer ring injection pipe and located on the side, away from the axis of the upper air inlet burner, of the outer ring injection pipe. And an included angle formed by the flow guide surface of the flow guide wall structure and the pipeline extension direction of the outer ring injection pipe is greater than or equal to 90 degrees. When the airflow direction near the pipe orifice of the outer ring injection pipe is opposite to the injection direction, the flow guide wall structure guides the airflow to deviate from the pipe orifice of the outer ring injection pipe, the situation that the amount of air injected into the outer ring injection pipe is too small is avoided, and the adverse effect of the airflow on the outer ring injection pipe is reduced; when the airflow direction is the same as the injection direction, the airflow is guided and gathered to the pipe opening of the outer ring injection pipe through the flow guide wall structure, the amount of air injected into the outer ring injection pipe is increased, the injection effect of the outer ring injection pipe is enhanced, and through the guiding effect of the flow guide wall structure on the airflow, insufficient combustion of fuel gas is avoided, and the energy efficiency of the upper air inlet combustor is improved.

Description

Technical Field

[0001] The utility model relates to a stove, in particular to an upper air inlet burner. Background Art

[0002] Household gas stoves usually use natural injection to replenish primary air, which is easily affected by the surrounding environment during use. In particular, the primary air channel of the upper air inlet burner is exposed above the stove. When the kitchen window is open or the fan blows directly, the outside wind will affect the amount of air injected by the outer ring injection pipe, causing incomplete gas combustion, excessive CO in the exhaust gas, and reducing the energy efficiency of the burner. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an upper air inlet burner in order to overcome the defect in the prior art that the external wind will affect the amount of primary air ejected by the outer ring ejector tube, resulting in incomplete combustion.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] An upper air inlet burner, comprising an outer ring ejector pipe, characterized in that the upper air inlet burner further comprises a guide wall structure, the guide wall structure is arranged beside the air inlet of the outer ring ejector pipe and is located on a side of the outer ring ejector pipe away from the axis of the upper air inlet burner;

[0006] The angle formed by the guide surface of the guide wall structure and the pipeline extension direction of the outer ring ejector tube is greater than or equal to 90°.

[0007] In the technical scheme, the primary air ejected by the outer ring ejector tube mainly comes from the outer cavity near the outer ring ejector tube away from the axis. By setting a guide wall structure in which the angle between the guide surface and the extension direction of the pipeline of the outer ring ejector tube is greater than or equal to 90°, when the airflow direction is opposite to the ejection direction, the guide wall structure makes the airflow guide deviate from the pipe mouth of the outer ring ejector tube, avoiding too little air being ejected into the outer ring ejector tube, and reducing the adverse effect of the airflow on the outer ring ejector tube; when the airflow direction is the same as the ejection direction, the guide wall structure makes the airflow guide gather to the pipe mouth of the outer ring ejector tube, increasing the amount of air ejected into the outer ring ejector tube and enhancing the ejection effect of the outer ring ejector tube. By reducing the adverse effect of the airflow on the outer ring ejector tube and enhancing the ejection effect of the outer ring ejector tube, the amount of primary air ejected by the outer ring ejector tube is increased, incomplete combustion of gas is avoided, and the energy efficiency of the upper air intake burner is improved.

[0008] Preferably, the angle formed by the guide surface of the guide wall structure and the pipe extension direction of the outer ring ejector pipe is greater than 90°.

[0009] In the technical solution, by setting the angle between the guide surface of the guide wall structure and the pipe extension direction of the outer ring ejector tube to be greater than 90°, the guide wall structure has a better airflow guiding effect at this angle.

[0010] Preferably, the upper air inlet burner further comprises a fire cover base and a burner base, and the fire cover base, the outer ring ejector tube and the burner base are sequentially arranged along the axial direction of the upper air inlet burner;

[0011] One end of the guide wall structure close to the fire cover base is connected to the fire cover base, and / or one end of the guide wall structure close to the burner base is connected to the burner base.

[0012] In the present technical solution, by connecting the end of the guide wall structure to the fire cover base or the burner base, the guide wall structure can guide the airflow at different heights near the outer circle ejector tube to deviate from or guide it to the outer circle ejector tube mouth, thereby making the guide wall have a better effect on guiding the airflow.

[0013] Preferably, the upper air inlet burner further comprises a fire cover base and a burner base, and the fire cover base, the outer ring ejector tube and the burner base are sequentially arranged along the axial direction of the upper air inlet burner;

[0014] The width of the guide wall structure gradually increases in a direction from the burner base toward the fire cover base.

[0015] Preferably, there are two outer ring ejector tubes, and the two outer ring ejector tubes are respectively connected to the outer ring gas chamber of the upper air inlet burner.

[0016] In this technical solution, by arranging two outer ring ejector tubes on the upper air inlet burner and connecting them to the outer ring gas cavity, the number of ejector tubes is increased, so that the gas is mixed with the air more fully before entering the outer ring gas cavity, thereby improving the combustion efficiency of the gas.

[0017] Preferably, the guide wall structure is arranged in a one-to-one correspondence with the outer circle ejector tube, and there are two guide wall structures. The two guide wall structures are respectively arranged on the sides of the air inlets of the two outer circle ejector tubes, and are respectively located on the side of the two outer circle ejector tubes away from the axis of the upper air inlet burner, and / or the two outer circle ejector tubes are symmetrically arranged with the axis of the upper air inlet burner as the axis.

[0018] In the present technical solution, a guide wall structure is arranged on the side away from the axis center beside the air inlet of the two outer ring ejector tubes, so that the two outer ring ejector tubes are affected by the guiding effect of the guide wall structure, further enhancing the ejection effect of the outer ring ejector tubes, increasing the amount of primary air ejected by the outer ring ejector tubes, and improving the energy efficiency of the upper air inlet burner; by symmetrically arranging the two outer ring ejector tubes, the mixed gas can be distributed more evenly in the outer ring gas chamber, thereby improving the combustion efficiency of the gas and making the firepower more uniform.

[0019] Preferably, the upper air inlet burner also includes a burner base, and the outer ring ejector tube and the burner base are arranged in sequence along the axial direction of the upper air inlet burner; a retaining structure is also arranged on the side of the outer ring ejector tube close to the burner base, and the retaining structure is perpendicular to the axis of the outer ring ejector tube, and one end of the retaining structure close to the outer ring ejector tube is connected to the outer ring ejector tube.

[0020] In the present technical solution, by setting a retaining structure perpendicular to the axis of the outer ring ejector tube and connected to the outer wall of the outer ring ejector tube on one side of the outer ring ejector tube, the horizontal airflow can be blocked so that it cannot blow toward the inner ring, thereby reducing the impact of the horizontal airflow on the inner ring ejector tube.

[0021] Preferably, there is an enclosure structure gap between one end of the enclosure structure close to the burner base and the burner base.

[0022] Preferably, the enclosure structure is connected to the burner base at two side portions at one end close to the burner base, and the middle portion of the enclosure structure at one end close to the burner base is recessed toward the outer ring ejector tube.

[0023] By connecting the two side parts of the enclosure structure at one end close to the burner base to the base, the middle part is recessed toward the outer circle ejector tube to form an enclosure structure gap. While retaining the enclosure structure gap between the enclosure structure and the burner base, the enclosure structure and the burner base are connected, making the overall structure of the upper air inlet burner more stable.

[0024] Preferably, there are two outer ring ejector tubes, which are respectively connected to the outer ring gas chamber of the upper air inlet burner; there are two enclosure structures, which are respectively arranged on one side of the two outer ring ejector tubes close to the base of the upper air inlet burner.

[0025] In this technical solution, a retaining structure is provided on one side of the base of the two outer ring ejector tubes close to the upper air inlet burner, so that the retaining structure can block the airflow at different angles in the horizontal direction, further reducing the influence of the airflow on the inner ring ejector tube.

[0026] The positive and progressive effect of the utility model is that: by setting a guide wall structure whose angle between the guide surface and the pipe extension direction of the outer ring ejector tube is greater than or equal to 90° on the side of the outer ring ejector tube, when the airflow direction is opposite to the ejection direction, the guide wall structure makes the airflow guide deviate from the tube mouth of the outer ring ejector tube, avoiding too little air being ejected into the outer ring ejector tube, and reducing the adverse effect of the airflow on the outer ring ejector tube; when the airflow direction is the same as the ejection direction, the guide wall structure makes the airflow guide gather to the tube mouth of the outer ring ejector tube, increasing the amount of air ejected into the outer ring ejector tube and enhancing the ejection effect of the outer ring ejector tube. By reducing the adverse effect of the airflow on the outer ring ejector tube and enhancing the ejection effect of the outer ring ejector tube, the amount of primary air ejected by the outer ring ejector tube is increased, insufficient combustion of gas is avoided, and the energy efficiency of the upper air intake burner is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of an ejector tube according to an embodiment of the utility model (I).

[0028] Figure 2 This is a schematic diagram of the appearance of an upper air inlet burner according to an embodiment of the utility model.

[0029] Figure 3 It is a partial schematic diagram of the appearance of an upper air inlet burner according to an embodiment of the utility model.

[0030] Figure 4 It is a schematic structural diagram of the air outlet of the outer ring ejector tube according to an embodiment of the utility model.

[0031] Figure 5 It is a schematic structural diagram of the air inlet of the outer ring ejector tube according to an embodiment of the utility model.

[0032] Figure 6 This is a schematic structural diagram of the ejector tube according to an embodiment of the utility model (II).

[0033] Figure 7 For the embodiment of the utility model Figure 7 Schematic diagram of the enlarged structure of part C.

[0034] Figure 8 It is a structural schematic diagram of the enclosure structure of an embodiment of the utility model.

[0035] Description of reference numerals:

[0036] Burner base 1

[0037] Outer ring ejector tube 2

[0038] Guide wall structure 21

[0039] Enclosure structure 22

[0040] Enclosure structure gap 23

[0041] Inner ring ejector tube 3

[0042] Diversion module 31

[0043] First module 31a

[0044] Second module 31b

[0045] Outer ring gas chamber 4

[0046] Inner ring gas chamber 5

[0047] Fire cover base 6

[0048] The extension direction of the outer ring ejector pipe A

[0049] Axis B

[0050] Angle α

[0051] Air Inlet 2a

[0052] Air outlet 2b DETAILED DESCRIPTION

[0053] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0054] This embodiment provides a top air inlet burner, such as Figure 1-Figure 8 As shown, the upper air inlet burner includes a fire cover base 6, an outer ring ejector tube 2 and a burner base 1, and the fire cover base 6, the outer ring ejector tube 2 and the burner base 1 are sequentially arranged along the axial direction of the upper air inlet burner, and the axial direction of the upper air inlet burner is the extension direction of the axis of the upper air inlet burner, that is, the outer ring ejector tube 2 is located between the fire cover base 6 and the burner base 1; the upper air inlet burner also includes a guide wall structure 21, and the guide wall structure 21 is arranged beside the outer ring ejector tube 2, and is located on the side of the outer ring ejector tube 2 away from the axis B of the upper air inlet burner; specifically, the angle α formed by the guide surface of the guide wall structure 21 and the pipeline extension direction A of the outer ring ejector tube 2 is greater than 90°.

[0055] In the present embodiment, after the upper air inlet burner is installed, its axial direction is the height direction, and its axis B is the geometric center of the upper air inlet burner. The primary air ejected by the outer ring ejector tube 2 mainly comes from the outer cavity near the outer ring ejector tube 2 away from the axis B. By setting a guide wall structure 21 in which the angle α formed by the guide surface and the pipeline extension direction A of the outer ring ejector tube 2 is greater than 90°, when the airflow direction near the pipe mouth of the outer ring ejector tube 2 is opposite to the ejection direction, the guide wall structure 21 makes the airflow guide deviate from the pipe mouth of the outer ring ejector tube 2, avoiding too little air being ejected into the outer ring ejector tube 2, and reducing the adverse effect of the airflow on the outer ring ejector tube 2; when the airflow direction is the same as the ejection direction, the guide wall structure 21 makes the airflow guide gather to the pipe mouth of the outer ring ejector tube 2, increase the amount of air ejected into the outer ring ejector tube 2, and enhance the ejection effect of the outer ring ejector tube 2. By reducing the adverse effect of the airflow on the outer ring ejector tube 2 and enhancing the ejection effect of the outer ring ejector tube 2, the amount of primary air ejected by the outer ring ejector tube 2 is increased, incomplete combustion of gas is avoided, and the energy efficiency of the upper air inlet burner is improved.

[0056] In this embodiment, by setting the angle α formed by the guide surface of the guide wall structure 21 and the pipeline extension direction A of the outer ring ejector tube 2 to be greater than 90°, the guide wall at this angle has a better effect on the airflow guidance. Of course, in other embodiments, the guide surface of the guide wall structure 21 can also be perpendicular to the pipeline extension direction A of the outer ring ejector tube 2, that is, the angle α between the guide surface of the guide wall structure and the pipeline extension direction A of the outer ring ejector tube is equal to 90°.

[0057] Specifically in this embodiment, Figure 2 As shown, one end of the guide wall structure 21 close to the fire cover base 6 is connected to the fire cover base 6, and a gap is left between the other end and the burner base 1. The end of the guide wall structure 21 close to the fire cover base 6 is connected to the fire cover base 6, and the height of the guide wall structure 21 is at least flush with the pipe opening of the outer ring ejector tube 2, ensuring that the airflow near the pipe opening of the outer ring ejector tube 2 is guided by the guide wall structure 21.

[0058] In other embodiments, the end of the guide wall structure 21 close to the burner base 1 is connected to the burner base 1, that is, the guide wall structure 21 is arranged beside the pipe opening of the outer ring ejector tube 2, and in the extension direction of the axis B of the upper air inlet burner, the two ends of the guide wall structure 21 are respectively connected to the fire cover base 6 and the burner base 1. By connecting the end of the guide wall structure 21 to the fire cover base 6 and the burner base 1, the guide wall structure 21 can guide the airflow at different heights near the outer ring ejector tube 2 to deviate from or guide it to the pipe opening of the outer ring ejector tube 2, that is, near the pipe opening of the outer ring ejector tube 2, the airflow from the fire cover base 6 to the burner base 1 will be guided by the guide wall structure 21, so that the guide wall has a better guiding effect on the airflow.

[0059] In this embodiment, the width of the guide wall structure 21 gradually increases in the direction from the burner base 1 toward the fire cover base 6, that is, after the upper air inlet burner is installed, the guide wall structure 21 is wide at the top and narrow at the bottom.

[0060] In this embodiment, if Figure 4 As shown, there are two outer ring ejector tubes 2, which are respectively connected to the outer ring gas chamber 4 of the upper air inlet burner. The air ejected by the outer ring ejector tube 2 is mixed with the gas and then transported to the outer ring gas chamber 4, that is, the gas outlet 2b of the outer ring ejector tube 2 is connected to the outer ring gas chamber 4. By arranging two outer ring ejector tubes 2 in the upper air inlet burner and connecting them to the outer ring gas chamber 4, the number of ejector tubes is increased, so that the gas is more fully mixed with the air before entering the outer ring gas chamber 4, thereby improving the combustion efficiency of the gas.

[0061] Specifically, if Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the guide wall structure 21 is arranged one-to-one with the outer ring ejector tube 2, and the two guide wall structures 21 are respectively arranged beside the air inlet 2a of the two outer ring ejector tubes 2, and are respectively located on the side of the two outer ring ejector tubes 2 away from the axis B of the upper air inlet burner, and the two outer ring ejector tubes 2 are arranged axially symmetrically about the axis B of the upper air inlet burner. By arranging the guide wall structure 21 on the side away from the axis B beside the air inlet 2a of the two outer ring ejector tubes 2, the two outer ring ejector tubes 2 are both affected by the guide wall structure 21, further enhancing the ejection effect of the outer ring ejector tube 2, increasing the amount of primary air ejected by the outer ring ejector tube 2, and improving the energy efficiency of the upper air inlet burner; by arranging the two outer ring ejector tubes 2 symmetrically, the mixed gas can be distributed more evenly in the outer ring combustion chamber 4, improving the combustion efficiency of the gas, and making the firepower more uniform.

[0062] In this embodiment, if Figure 3 and Figure 7As shown, the upper air inlet burner further includes an inner ring ejector tube 3, which is in communication with the inner ring gas chamber 5 and is arranged at the same height as the outer ring ejector tube 2 of the upper air inlet burner. The air ejected by the inner ring ejector tube 3 is mixed with the gas and then transported to the inner ring gas chamber 5. A retaining structure 22 is also arranged on one side of the outer ring ejector tube 2 close to the burner base 1. The retaining structure 22 is perpendicular to the axis of the outer ring ejector tube 2, and one end of the retaining structure 22 close to the outer ring ejector tube 2 is connected to the outer ring ejector tube 2, that is, one end of the retaining structure 22 is connected to the outer wall of the outer ring ejector tube 2, and there is no gap between the retaining structure 22 and the outer wall of the outer ring ejector tube 2. Specifically, the enclosure structure 22 is a curved structure respectively arranged on one side of the base of the two outer ring ejector tubes 2 close to the upper air inlet burner, and connected to the outer wall of the outer ring ejector tube 2 close to the burner base 1. The axis of the outer ring ejector tube 2 is perpendicular to the enclosure structure 22, so that the enclosure structure 22 is arranged in a semi-encircling manner between the outer ring ejector tube 2 and the burner base 1. By arranging the enclosure structure 22 perpendicular to the axis of the outer ring ejector tube 2 and connected to the outer wall of the outer ring ejector tube 2 on one side of the outer ring ejector tube 2, so that the enclosure structure 22 is arranged in a semi-encircling manner between the outer ring ejector tube 2 and the burner base 1, it is possible to block airflows at different angles in the horizontal direction so that they cannot blow toward the inner ring, thereby reducing the influence of the horizontal airflow on the inner ring ejector tube 3.

[0063] Specifically, there is an enclosure structure gap 23 between the end of the enclosure structure 22 close to the burner base 1 and the burner base 1. The enclosure structure 22 is connected to the burner base 1 at both sides of the end close to the burner base 1, and is recessed toward the outer ring ejector tube 2 at the middle part of the end close to the burner base 1, forming an enclosure structure gap 23 between the enclosure structure 22 and the burner base 1. By connecting the enclosure structure 22 to the base at both sides of the end close to the burner base 1, and recessing the middle part toward the outer ring ejector tube 2 to form the enclosure structure gap 23, while retaining the enclosure structure gap 23 between the enclosure structure 22 and the burner base 1, the enclosure structure 22 is connected to the burner base 1, so that the overall structure of the upper air inlet burner is more stable.

[0064] In this embodiment, if Figure 1As shown, a flow guide module 31 is arranged near the nozzle of the inner circle ejector tube 3, and the flow guide module 31 includes a first module 31a and a second module 31b symmetrically arranged on both sides of the nozzle of the inner circle ejector tube 3. In the direction close to the axis B of the burner, the first module 31a and the second module 31b gradually approach each other, so that the flow guide module 31 is in a gathered state from the outside of the burner toward the direction of the axis B. Of course, there is no special limitation on the shape of the flow guide module, and the first module 31a and the second module 31b can be square, trapezoidal, parallelogram and other structures, as long as the flow guide module is arranged on both sides of the nozzle of the inner circle ejector tube 3 to achieve the purpose of gathering. By setting a guide module 31 that is in a gathering state from the outside of the burner toward the axis B, the airflow near the pipe mouth of the inner circle ejector tube 3 is gathered to the pipe mouth by the guide module 31 and flows toward the inner circle ejector tube 3, thereby enhancing the ejection effect of the inner circle ejector tube 3, increasing the amount of air ejected by the inner circle ejector tube 3, and making the gas in the inner circle gas chamber 5 burn more completely.

[0065] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. An upper air inlet burner, comprising an outer ring ejector tube, characterized in that: The upper air inlet burner further comprises a guide wall structure, which is arranged beside the air inlet of the outer ring ejector pipe and located on a side of the outer ring ejector pipe away from the axis of the upper air inlet burner; The angle formed by the guide surface of the guide wall structure and the pipeline extension direction of the outer ring ejector tube is greater than or equal to 90°.

2. The upward air inlet burner according to claim 1, characterized in that: The angle formed by the guide surface of the guide wall structure and the pipe extension direction of the outer ring ejector pipe is greater than 90°.

3. The upward air inlet burner according to claim 1, characterized in that: The upper air inlet burner further comprises a fire cover base and a burner base, wherein the fire cover base, the outer ring ejector tube and the burner base are sequentially arranged along the axial direction of the upper air inlet burner; One end of the guide wall structure close to the fire cover base is connected to the fire cover base, and / or one end of the guide wall structure close to the burner base is connected to the burner base.

4. The upward air inlet burner according to claim 1, characterized in that: The upper air inlet burner further comprises a fire cover base and a burner base, wherein the fire cover base, the outer ring ejector tube and the burner base are sequentially arranged along the axial direction of the upper air inlet burner; The width of the guide wall structure gradually increases in a direction from the burner base toward the fire cover base.

5. The upward air inlet burner according to claim 1, characterized in that: There are two outer ring ejector tubes, and the two outer ring ejector tubes are respectively connected to the outer ring gas chamber of the upper air inlet burner.

6. The upward air inlet burner according to claim 5, characterized in that: The guide wall structure is arranged in a one-to-one correspondence with the outer circle ejector tube. There are two guide wall structures. The two guide wall structures are respectively arranged on the sides of the air inlets of the two outer circle ejector tubes, and are respectively located on the side of the two outer circle ejector tubes away from the axis of the upper air inlet burner, and / or the two outer circle ejector tubes are symmetrically arranged with the axis of the upper air inlet burner as the axis.

7. The upward air inlet burner according to claim 1, characterized in that: The upper air inlet burner further comprises a burner base, and the outer ring ejector pipe and the burner base are sequentially arranged along the axial direction of the upper air inlet burner; A retaining structure is also provided on one side of the outer ring ejector tube close to the burner base. The retaining structure is perpendicular to the axis of the outer ring ejector tube, and one end of the retaining structure close to the outer ring ejector tube is connected to the outer ring ejector tube.

8. The upward air inlet burner according to claim 7, characterized in that: There is an enclosure structure gap between one end of the enclosure structure close to the burner base and the burner base.

9. The upward air inlet burner according to claim 8, characterized in that: The enclosure structure is connected to the burner base at two side portions at one end close to the burner base, and the middle portion of the enclosure structure at one end close to the burner base is recessed toward the outer ring ejector tube.

10. The upward air inlet burner according to claim 9, characterized in that: There are two outer ring ejector tubes, and the two outer ring ejector tubes are respectively connected to the outer ring gas chamber of the upper air inlet burner; There are two enclosure structures, and the two enclosure structures are respectively arranged on one side of the base of the two outer ring ejector tubes close to the upper air inlet burner.

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