Fuel gas premixing system

Abstract

The utility model discloses a fuel gas premixing system which comprises a premixing main body, a premixing cavity is defined by the premixing main body, the premixing cavity comprises an inlet used for inflow of gas and an outlet configured to supply the gas to a combustor, a plurality of turbulent flow ribs are arranged in the premixing cavity, and the turbulent flow ribs extend from the inlet to the outlet. The turbulent flow ribs are arranged in the pre-mixing cavity and enable flowing fuel gas and air to generate turbulent flow to be fully mixed, so that the fuel gas and the air entering the combustor are mixed more evenly, the combustion efficiency of the combustor is improved, and the combustion working condition is better.

Description

Technical Field

[0001] The present application relates to a fluid heater, and more particularly to a heat generating device technology field that is particularly suitable for extracting latent heat from flue gas by condensation, and specifically relates to a gas premixing system. Background Art

[0002] The premixed combustion mode requires that fuel and oxygen (or air) be uniformly mixed in a certain proportion before combustion to form a combustible mixture. This mixture requires uniform mixing of gas and air to ensure that the fuel can burn fully during the combustion process and improve the combustion efficiency. Whether the gas and air are uniformly mixed will directly affect the combustion efficiency and combustion conditions of the gas appliance. Summary of the Invention

[0003] The present utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present utility model provides a gas premixing system that enables more sufficient mixing of gas and air. The technical solutions adopted include:

[0004] A gas premixing system includes a premixing main body that defines a premixing chamber. The premixing chamber includes an inlet for inflowing gas and an outlet configured to supply gas to a burner. A plurality of flow disturbing ribs are provided on the inner wall of the premixing chamber, and the flow disturbing ribs extend from the inlet towards the outlet.

[0005] In one embodiment of the present utility model, the technical solution adopted to solve its technical problem is: there are a plurality of the flow disturbing ribs, and the plurality of flow disturbing ribs are spaced apart along the inner wall of the premixing chamber.

[0006] In one embodiment of the present utility model, the technical solution adopted to solve its technical problem is: each of the flow disturbing ribs is respectively provided with a mixing channel penetrating therethrough.

[0007] In one embodiment of the present utility model, the technical solution adopted to solve its technical problem is: the premixing main body includes a premixing pipe. One end of the premixing pipe is open and forms the inlet, and the side wall of the other end is provided with the outlet. Moreover, the surface of the other end of the premixing pipe opposite to the inlet is an arc surface, and there is a spacing between the gas outlet of the flow disturbing rib and the arc surface.

[0008] Advantages of the Present Utility Model

[0009] Flow disturbing ribs are provided in the premixing chamber. The flow disturbing ribs cause turbulence in the flowing gas and air for sufficient mixing, making the gas and air entering the burner more uniformly mixed, which is beneficial to improving the combustion efficiency of the burner and the combustion conditions are better. Description of the Drawings

[0010] The above and / or additional aspects and advantages of the present utility model will become apparent and understandable from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0011] Figure 1 is a schematic structural diagram of the gas premixing system described in this embodiment;

[0012] Figure 2 is a schematic structural diagram of a burner applying the gas premixing system described in this embodiment;

[0013] Figure 3 is a schematic structural diagram of a gas appliance applying the gas premixing system described in this embodiment. Detailed implementation manners

[0014] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0015] In the description of the present utility model, the meaning of "plural" is more than two. Understandings such as "greater than", "less than", and "exceeding" do not include the present number, and understandings such as "above", "below", and "within" include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0016] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or position relationship indicated by "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or position relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0017] In the present utility model, unless otherwise clearly defined, words such as "arranged", "installed", and "connected" should be understood in a broad sense. For example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected, detachably connected, or integrally formed; they can be mechanically connected; they can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0018] Refer to Figures 1-3, embodiments of the present application are proposed. The gas pre - mixing system described in this embodiment is applied to a burner 70 and specifically includes a pre - mixing main body 10, which defines a pre - mixing chamber 20. The pre - mixing chamber 20 includes an inlet 30 for inflowing gas and an outlet 40 configured to supply gas to the burner 70. A plurality of turbulence ribs 50 are provided on the inner wall of the pre - mixing chamber 20, and the turbulence ribs 50 extend from the inlet 30 towards the outlet 40.

[0019] As shown in the accompanying drawings, gas and air flow into the pre - mixing chamber 20 through the inlet 30. After the gas and air are mixed in the pre - mixing chamber 20 to form a mixture gas, it flows into the burner 70 through the outlet 40. Since the turbulence ribs 50 are provided in the pre - mixing chamber 20, the turbulence ribs 50 cause the flowing gas and air to generate turbulence for sufficient mixing, making the gas and air entering the burner 70 more evenly mixed, which is beneficial to improving the combustion efficiency of the burner 70.

[0020] As shown in the accompanying drawings, in this embodiment, there are a plurality of the turbulence ribs 50, and the plurality of turbulence ribs 50 are spaced along the inner wall of the pre - mixing chamber 20, which is beneficial to further making the air and gas more evenly mixed.

[0021] Preferably, in this embodiment, mixing channels 60 penetrating through the turbulence ribs 50 are respectively provided on the turbulence ribs 50. As shown in the accompanying drawings, the mixing channels 60 also extend from the inlet 30 towards the outlet 40. After the gas and air are mixed, they flow in the turbulence holes, and the mixing is more sufficient and the combustion condition is better. At least one mixing channel 60 is provided on each turbulence rib 50. In this embodiment, a plurality of mixing channels 60 are provided on each turbulence rib 50.

[0022] Based on the above, in this embodiment, the pre - mixing main body 10 includes a pre - mixing pipe 11. One end of the pre - mixing pipe 11 is open and forms the inlet 30, and the side wall of the other end thereof is provided with the outlet 40. The outlet 40 is communicated with the burner 70, and the surface of the other end of the pre - mixing pipe 11 opposite to the inlet 30 is an arc surface 12, and the center of the arc surface 12 faces the burner 70. There is a spacing between the air outlet of the turbulence rib 50 and the arc surface 12.

[0023] As shown in the accompanying drawings, when gas and air flow into the pre - mixing pipe 11 from the inlet 30 and are turbulently mixed by the turbulence ribs 50, the mixed gas flow reaches the inner wall of the other end of the pre - mixing pipe 11 and then flows into the burner 70 after being guided by the arc surface 12. Since there is a spacing between the air outlet of the turbulence rib 50 and the arc surface 12, the mixture gas flowing out of the mixing channel 60 can also flow into the burner 70 after being guided by the arc surface 12.

[0024] AsFigure 3 The figure shows a schematic structural diagram of a gas appliance applying the gas premixing system described in this embodiment, including the above-mentioned gas premixing system. The inlet 30 is communicated with the outlet of the fan 80, the fan 80 is communicated with the gas proportional valve 90 and the air inlet 100, and the outlet 40 is communicated with the burner 70.

[0025] Certainly, the present utility model is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A gas premixing system, characterized in that: The invention comprises a premixing body (10) which defines a premixing chamber (20), wherein the premixing chamber (20) comprises an inlet (30) for inflowing gas and an outlet (40) configured to supply the gas to a burner (70), wherein a plurality of spoiler ribs (50) are arranged on the inner wall of the premixing chamber (20), and wherein the spoiler ribs (50) extend from the inlet (30) toward the outlet (40).

2. The gas premixing system according to claim 1, characterized in that: A plurality of the spoiler ribs (50) are provided, and the plurality of the spoiler ribs (50) are distributed at intervals along the inner wall of the premixing chamber (20).

3. The gas premixing system according to claim 1 or 2, characterized in that: Each of the spoiler ribs (50) is provided with a mixing channel (60) passing through it.

4. The gas premixing system according to claim 3, characterized in that: The premixing body (10) comprises a premixing tube (11), one end of the premixing tube (11) is open and forms the inlet (30), and the side wall of the other end is provided with the outlet (40), and the surface of the other end of the premixing tube (11) opposite to the inlet (30) is a curved surface (12), and a distance is left between the air outlet of the spoiler rib (50) and the curved surface (12).

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