Fuel gas premixing device for full-premixing water-cooled burner

Abstract

The utility model discloses a gas premixing device for a full-premixing water-cooled combustion engine, which comprises an exhaust hood, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, the exhaust pipe is horizontally connected with the middle position of the exhaust hood; the venturi tube is connected with the exhaust pipe; and the air blower is connected with the Venturi tube. The utility model has the following advantages and effects: the venturi tube is arranged, so that the accelerated mixing of combustion gas and air is realized, the premixed gas is further uniformly dispersed, and sufficient and uniform combustion is ensured.

Description

Technical Field

[0001] The utility model relates to the field of gas boilers, in particular to a gas premixing device for a full premixed water-cooled burner. Background Art

[0002] A burner is a thermal energy device that delivers fuel and air into the furnace at the required concentration, speed, turbulence and mixing method, and enables the fuel to ignite and burn stably in the furnace. It is generally used in small and medium-sized oil or gas boilers.

[0003] When the burner is working, air and fuel are usually mixed in appropriate proportions through a premixing device to ensure full combustion. Traditional burners usually use a fan to blow the premixed gas directly into the combustion head, resulting in uneven dispersion of the premixed gas, which cannot ensure full and uniform combustion and needs to be improved. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a gas premixing device for a fully premixed water-cooled burner, which has the effect of ensuring uniform gas dispersion and fully uniform combustion.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: A gas premixing device for a fully premixed water-cooled burner, comprising:

[0006] Exhaust hood, used to connect the burner head;

[0007] An exhaust pipe horizontally connected to the middle of the exhaust hood;

[0008] A venturi tube connected to the exhaust pipe;

[0009] A blower is connected to the venturi tube.

[0010] In a preferred example, the utility model can be further configured as follows: the Venturi tube includes a first horizontal section, a tapered section, and a second horizontal section, the first horizontal section is connected to the blower, the second horizontal section is connected to the exhaust duct, the large end of the tapered section is connected to the first horizontal section, and the small end is connected to the second horizontal section.

[0011] In a preferred example, the present invention can be further configured as follows: the connection positions of the first horizontal section, the necking section and the second horizontal section are arranged in an arc transition shape.

[0012] In a preferred example, the utility model can be further configured as follows: the second horizontal section and the exhaust pipe are fixed via a flange.

[0013] In a preferred example, the utility model can be further configured as follows: a splitter blade is provided at one end of the exhaust pipe close to the exhaust hood.

[0014] In a preferred example, the utility model can be further configured as follows: the splitter blade includes an inner ring, an outer ring and a plurality of splitter plates, the splitter plates are arranged obliquely, and a splitter channel is formed between two adjacent splitter plates.

[0015] In a preferred example, the utility model can be further configured as follows: the inclination angle of the diverter plate is 30°-50°.

[0016] In a preferred example, the utility model can be further configured as follows: plug blocks are provided at both ends of the diverter plate, and plug holes for inserting the plug blocks are provided on the inner ring and the outer ring.

[0017] In summary, the utility model has the following beneficial effects:

[0018] 1. By setting up a Venturi tube, the combustion gas and air are mixed faster, and the premixed gas is further evenly dispersed to ensure full and uniform combustion;

[0019] 2. By setting the splitter blades, the discharged premixed gas is evenly spread out, so that the premixed gas evenly enters each position of the burner head, ensuring that the gas is in an isobaric combustion state. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 It is a schematic structural diagram of the venturi tube of an embodiment;

[0022] Figure 3 Schematic diagram of the structure of the splitter blade in the embodiment.

[0023] Figure numerals: 1. exhaust hood; 2. exhaust duct; 3. venturi tube; 31. first horizontal section; 32. necking section; 33. second horizontal section; 4. blower; 5. flange; 6. splitter blade; 61. inner ring; 62. outer ring; 63. splitter plate; 64. splitter channel; 65. plug block; 66. socket. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1 , Figure 2As shown, a gas premixing device for a fully premixed water-cooled burner includes an exhaust hood 1, an exhaust pipe 2, a venturi tube 3, and a blower 4. The exhaust hood 1 is used to connect the combustion head, the exhaust pipe 2 is horizontally connected to the middle of the exhaust hood 1, the venturi tube 3 is connected to the exhaust pipe 2, and the blower 4 is connected to the venturi tube 3.

[0026] like Figure 1 , Figure 2 As shown, the venturi tube 3 includes a first horizontal section 31, a constricted section 32 and a second horizontal section 33. The first horizontal section 31 is connected to the blower 4, the second horizontal section 33 is connected to the exhaust pipe 2, the large end of the constricted section 32 is connected to the first horizontal section 31, and the small end is connected to the second horizontal section 33.

[0027] like Figure 1 , Figure 2 As shown, the connection positions of the first horizontal section 31, the constricted section 32 and the second horizontal section 33 are arranged in an arc transition shape to ensure the smoothness of gas flow and accelerate the flow and mixing of gas. The second horizontal section 33 is fixed to the exhaust pipe 2 through a flange 5 to achieve rapid fixation and stable connection between the two.

[0028] When the premixing device is working, the combustible gas and compressed air are discharged into the venturi tube 3 by the blower 4, at which time the combustion gas and air can be mixed at an accelerated rate, and then the premixed gas enters the exhaust pipe and the exhaust hood 1, so that the premixed gas is evenly dispersed, thereby effectively ensuring sufficient and uniform combustion, and at the same time reducing the noise generated during the transportation of the combustible gas.

[0029] like Figure 1 , Figure 3 As shown, a splitter blade 6 is provided at one end of the exhaust duct 2 close to the exhaust hood 1. The splitter blade 6 includes an inner ring 61, an outer ring 62 and a plurality of splitter plates 63. The splitter plates 63 are inclined and a splitter channel 64 is formed between two adjacent splitter plates 63.

[0030] Therefore, when the gas passes through the exhaust pipe 2, the splitter blades 6 will guide the gas, so that the exhausted premixed gas is evenly spread out, allowing the premixed gas to evenly enter various positions of the burner head, ensuring that the gas is in an isobaric combustion state.

[0031] like Figure 3 As shown, the inclination angle of the diverter plate 63 is 30°-50°, so as to ensure that the gas can be evenly spread and evenly transported, and further make the premixed gas evenly enter various positions of the burner head to ensure that the gas is in an isobaric combustion state.

[0032] like Figure 3As shown, plug blocks 65 are provided at both ends of the splitter plate 63, and plug holes 66 for inserting the plug blocks 65 are provided on the inner ring 61 and the outer ring 62. Therefore, when installing the splitter plate 63, the plug blocks 65 cooperate with the plug holes 66 to achieve rapid installation and high-precision positioning of the splitter plate 63, thereby ensuring the stability of the splitter blade 6 when working.

[0033] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A gas premixing device for a fully premixed water-cooled burner, characterized in that: include: An exhaust hood (1) for connecting to a combustion head; An exhaust pipe (2) horizontally connected to the middle of the exhaust hood (1); A venturi tube (3) connected to the exhaust pipe (2); A blower (4) is connected to the Venturi tube (3).

2. A gas premixing device for a fully premixed water-cooled burner according to claim 1, characterized in that: The venturi tube (3) comprises a first horizontal section (31), a constricted section (32) and a second horizontal section (33); the first horizontal section (31) is connected to the blower (4); the second horizontal section (33) is connected to the exhaust pipe (2); the large end of the constricted section (32) is connected to the first horizontal section (31), and the small end is connected to the second horizontal section (33).

3. A gas premixing device for a fully premixed water-cooled burner according to claim 2, characterized in that: The connection position between the first horizontal section (31), the necked section (32) and the second horizontal section (33) is arranged in a circular arc transition shape.

4. A gas premixing device for a fully premixed water-cooled burner according to claim 3, characterized in that: The second horizontal section (33) is fixed to the exhaust pipe (2) via a flange (5).

5. A gas premixing device for a fully premixed water-cooled burner according to claim 1, characterized in that: A splitter blade (6) is provided at one end of the exhaust pipe (2) close to the exhaust cover (1).

6. A gas premixing device for a fully premixed water-cooled burner according to claim 5, characterized in that: The splitter blade (6) comprises an inner ring (61), an outer ring (62) and a plurality of splitter plates (63); the splitter plates (63) are arranged obliquely, and a splitter channel (64) is formed between two adjacent splitter plates (63).

7. A gas premixing device for a fully premixed water-cooled burner according to claim 6, characterized in that: The inclination angle of the diverter plate (63) is 30°-50°.

8. A gas premixing device for a fully premixed water-cooled burner according to claim 7, characterized in that: Insertion blocks (65) are provided at both ends of the diverter plate (63), and insertion holes (66) for inserting the insertion blocks (65) are provided on the inner ring (61) and the outer ring (62).

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