Air-gas premixer

Abstract

The utility model relates to the technical field of air-gas premixers, and discloses an air-gas premixer, comprising a mixing pipe and a connecting pipe interspersed on the mixing pipe, the gas will enter the inner cavity of the gas nozzle through the connecting pipe, and with the cooperation of the mixing pipe, the connecting panel, the first air outlet, the gas nozzle, the gas spray gun A, the gas spray gun B and the third air outlet, the gas sprayed from the gas spray gun B will be merged with the combustion-supporting air at the first time, and enter the mixing cavity on the mixing pipe through the first air outlet, and at the same time, the third air outlet on the gas spray gun A is positioned to one side of a swirl disk, and the gas output from the third air outlet moves in a swirl through the setting of the swirl disk shape, and the air / fuel premixed gas of the three premixing pathways enters the premixing cavity, and then is sprayed into the combustion head through the mesh plate at the front end, and in this process, the gas and the air can be more fully merged, thereby improving the combustion rate of the gas and ensuring that the gas will not be wasted.

Description

Technical Field

[0001] The utility model relates to the technical field of air-gas premixers, in particular to an air-gas premixer. Background Art

[0002] The gas and air are premixed into a uniform mixture. This combustible mixture is called premixed gas. The process of ignition and combustion of the premixed gas in the burner is called premixed combustion.

[0003] The gas and air in some existing heat exchange devices are not fully mixed in contact. During long-term combustion, the gas and air are not fully mixed in contact, resulting in the gas not being fully burned and utilized, causing a certain waste of resources and also resulting in low combustion efficiency of the gas. Therefore, it does not meet the existing needs, and we have proposed an air-gas premixer. Utility Model Content

[0004] The utility model provides an air-gas premixer, which has the beneficial effect of allowing gas and air to fully and quickly blend and improving the gas combustion efficiency. It solves the problem mentioned in the above background technology that during long-term combustion, the gas cannot be fully burned and utilized due to insufficient contact and mixing between gas and air, resulting in a certain waste of resources and also leading to low gas combustion efficiency.

[0005] The utility model provides the following technical solution: an air-gas premixer, comprising a mixing pipe and a connecting pipe inserted in the mixing pipe, one end of the connecting pipe is connected with a gas nozzle, a connecting panel is fixedly installed on the axial side wall of the gas nozzle, a plurality of first gas outlet holes are opened on the side wall of the connecting panel, a plurality of second gas outlet holes are opened on the axial side wall of the gas nozzle, a plurality of gas spray guns A and gas spray guns B are connected on the axial side wall of the gas nozzle, and a third gas outlet hole is opened on the side wall of the gas spray gun A.

[0006] As an optional solution of the air-gas premixer of the utility model, the gas outlet directions of the first gas outlet, the second gas outlet, the third gas outlet and the gas outlet of the gas spray gun B are not at the same level and are staggered with each other.

[0007] As an optional solution of the air-gas premixer of the utility model, a plurality of swirl disks are fixedly mounted on the side wall of the connecting panel, and the plurality of swirl disks are arranged in an inclined surface.

[0008] As an optional solution of the air-gas premixer of the utility model, the third air outlet is arranged on one side of the swirl disk.

[0009] As an optional solution of the air-gas premixer of the utility model, a metal mesh is arranged on one side of the mixing pipe, and a combustion head is arranged on one end of the mixing pipe.

[0010] The utility model has the beneficial effects:

[0011] First, the gas enters its inner cavity through the lower end of the connecting pipe, and then enters the inner cavity of the gas nozzle through the connecting pipe. With the cooperation of the mixing pipe, the connecting panel, the first air outlet, the gas nozzle, the gas spray gun A, the gas spray gun B and the third air outlet, the gas sprayed from the gas spray gun B will be merged with the combustion-supporting air at the first time, and enter the mixing cavity on the mixing pipe through the first air outlet. At the same time, the position of the third air outlet on the gas spray gun A is aligned with one side of the swirl disk. Through the setting of the swirl disk shape, the gas output from the third air outlet will move in a swirl, and the air / fuel premixed gas of the three premixing pathways enters the premixing cavity, and then is sprayed into the combustion head through the mesh plate at the front end. In the process again, the gas and air can be more fully merged, which improves the combustion rate of the gas and ensures that the gas will not be wasted. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 This is a schematic diagram of the mixing pipeline structure of the utility model.

[0014] Figure 3 The utility model is a schematic diagram of the gas nozzle, the gas spray gun A and the gas spray gun structure.

[0015] Figure 4 This is a schematic diagram of the internal structure of the mixing pipeline of the present utility model.

[0016] Figure 5 This is a schematic diagram of the mixing pipe and combustion head structure of the utility model.

[0017] In the figure: 1. mixing pipe; 2. connecting pipe; 3. connecting panel; 4. first air outlet; 5. gas spray gun A; 6. gas spray gun B; 7. third air outlet; 8. gas nozzle; 9. second air outlet; 10. swirl disk; 11. combustion head; 12. wire mesh. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5 An air-gas premixer comprises a mixing pipe (1) and a connecting pipe (2) inserted into the mixing pipe (1), one end of the connecting pipe (2) being connected to a gas nozzle (8), a connecting panel (3) being fixedly mounted on an axial side wall of the gas nozzle (8), a plurality of first gas outlet holes (4) being provided on the side wall of the connecting panel (3), a plurality of second gas outlet holes (9) being provided on the axial side wall of the gas nozzle (8), a plurality of gas spray guns A (5) and gas spray guns B (6) being connected to the axial side wall of the gas nozzle (8), and a third gas outlet hole (7) being provided on the side wall of the gas spray gun A (5).

[0020] The gas outlet directions of the first gas outlet hole (4), the second gas outlet hole (9), the third gas outlet hole (7) and the gas outlet hole of the gas spray gun B (6) are not at the same level, but are staggered with each other, and the peripheral gas sprayed by the gas spray gun B (6) is mixed with the direct current air around the air duct.

[0021] A plurality of swirl discs (10) are fixedly mounted on the side wall of the connection panel (3), and the plurality of swirl discs (10) are arranged in an inclined surface.

[0022] The third air outlet (7) is arranged in a direction on one side of the swirl disk (10). By setting the air outlet direction of the third air outlet (7) and the position of the swirl disk (10), the third air outlet (7) can be made to perform swirl motion, thereby driving the mixing of the gas.

[0023] A metal mesh (12) is provided on one side of the mixing pipe (1), and a combustion head (11) is provided at one end of the mixing pipe (1). The fully premixed surface burner needs to fully mix air and gas before combustion, and then evenly sprays numerous small streams of gas through the filter structure of the combustion head (11) and the metal mesh (12), and then starts combustion after the gas is ignited; this device can fully mix air / gas.

[0024] In this embodiment: first, the gas enters the inner cavity of the connecting pipe (2) through the lower end thereof, and then enters the inner cavity of the gas nozzle (8) through the connecting pipe (2). At the same time, the combustion-supporting air enters the inner cavity of the mixing pipe (1) through one end thereof, and then enters the mixing cavity on the mixing pipe (1) through the first air outlet (4) on the connecting panel (3). When the gas enters the gas nozzle (8), the gas passes through the gas spray gun A (5) and the gas spray gun B (6) at the same time, and the gas is outputted through the air outlet of the gas spray gun B (6) and the third air outlet (7) on the gas spray gun A (5). The gas sprayed from the spray gun B (6) will be immediately combined with the combustion-supporting air and enter the mixing chamber on the mixing pipe (1) through the first gas outlet hole (4). At the same time, the third gas outlet hole (7) on the gas spray gun A (5) is aligned with one side of the swirl disk (10). Due to the shape of the swirl disk (10), the gas output from the third gas outlet hole (7) will move in a swirl. The air / fuel premixed gas of the three premixing paths enters the premixing chamber and is then sprayed through the mesh plate at the front end into the combustion head (11). In the process, the gas and air can be more fully combined, thereby improving the combustion rate of the gas and ensuring that the gas will not be wasted.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An air-gas premixer, comprising a mixing pipe (1) and a connecting pipe (2) inserted into the mixing pipe (1), wherein one end of the connecting pipe (2) is connected to a gas nozzle (8), characterized in that: A connection panel (3) is fixedly mounted on the axial side wall of the gas nozzle (8), a plurality of first gas outlet holes (4) are provided on the side wall of the connection panel (3), a plurality of second gas outlet holes (9) are provided on the axial side wall of the gas nozzle (8), a plurality of gas spray guns A (5) and gas spray guns B (6) are connectedly arranged on the axial side wall of the gas nozzle (8), and a third gas outlet hole (7) is provided on the side wall of the gas spray gun A (5).

2. The air-gas premixer according to claim 1, characterized in that: The gas outlet directions of the first gas outlet hole (4), the second gas outlet hole (9), the third gas outlet hole (7) and the gas outlet hole of the gas spray gun B (6) are not at the same level and are staggered with each other.

3. The air-gas premixer according to claim 2, characterized in that: A plurality of swirl discs (10) are fixedly mounted on the side wall of the connection panel (3), and the plurality of swirl discs (10) are arranged in an inclined surface.

4. The air-gas premixer according to claim 3, characterized in that: The third air outlet (7) is arranged in a direction corresponding to one side of the swirl disk (10).

5. The air-gas premixer according to claim 4, characterized in that: A metal mesh (12) is provided on one side of the mixing pipe (1), and a combustion head (11) is provided on one end of the mixing pipe (1).

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