Fire-retardant structure for full-premixing water-cooled combustion engine

Abstract

The utility model discloses a fire-retardant structure for a full-premixing water-cooled combustion engine, which comprises an exhaust hood, an exhaust fan, a water-cooled combustion chamber and a water-cooled combustion chamber, the fixed frame is arranged at the outlet position of the exhaust hood; the mounting frame is arranged behind the fixing frame; the multiple layers of fire retardant plates are arranged on the mounting frame and embedded in the fixing frame; the fire retardant plate comprises a bottom plate and a top plate, the bottom plate is horizontally arranged, the top plate is arranged in a wave shape, and a plurality of rows of ventilation hole channels are formed between the top plate and the bottom plate on the upper layer and the bottom plate on the lower layer. The burner has the following advantages and effects that through the arrangement of the fire-retardant plate with the uniformly-distributed ventilation hole channels, fuel gas can uniformly enter the burning head, the fuel gas can be burnt as sufficiently as possible, and the backfire phenomenon is prevented.

Description

Technical Field

[0001] The utility model relates to the field of gas boilers, in particular to a fire-blocking structure 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 premixed gas directly into the combustion head. If the heat load on the flame surface is high, a relatively high sintering point will be formed, causing flashback during gas combustion, which 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 fire-blocking structure for a fully premixed water-cooled combustion machine, which has the effect of preventing the occurrence of flashback.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a fire-blocking structure for a fully premixed water-cooled burner, comprising:

[0006] Exhaust hood, used to connect the gas premixing device;

[0007] A fixing frame, arranged at the outlet position of the exhaust hood;

[0008] An installation frame, arranged behind the fixing frame;

[0009] A multi-layer fire-blocking board is arranged on the installation frame and embedded in the fixing frame;

[0010] The fire-blocking plate comprises a bottom plate and a top plate, wherein the bottom plate is arranged horizontally and the top plate is arranged in a wave shape, and a plurality of rows of air-permeable channels are formed between the top plate and the upper and lower layers of the bottom plates.

[0011] In a preferred example, the utility model can be further configured as follows: an exhaust plate is arranged in the fixing frame, and a plurality of rows of exhaust holes are evenly distributed on the exhaust plate.

[0012] In a preferred example, the utility model can be further configured as follows: each row of the exhaust holes includes a plurality of elongated strip holes and a plurality of circular holes located between two adjacent strip holes.

[0013] In a preferred example, the utility model can be further configured as follows: the arrangement of the exhaust holes and the arrangement of the fire-blocking plates are arranged in a horizontal and vertical staggered manner.

[0014] In a preferred example, the utility model can be further configured as follows: an equalizing plate is embedded at the inlet end of the exhaust hood.

[0015] In a preferred example, the utility model can be further configured as follows: the equal distribution plate includes an inner ring, an outer ring and a plurality of diverter plates, the diverter plates are arranged obliquely, and a diverter channel is formed between two adjacent diverter plates.

[0016] In a preferred example, the utility model can be further configured as follows: the inclination angle of the diverter plate is 30°-50°.

[0017] 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.

[0018] In summary, the utility model has the following beneficial effects:

[0019] 1. By setting a fire barrier with evenly distributed air permeable channels, the gas can enter the combustion head evenly, allowing the gas to burn as fully as possible and preventing flashback;

[0020] 2. By setting up fire-blocking plates and exhaust holes that are arranged horizontally and vertically, on the one hand, the stable flow direction of the gas can be ensured, and on the other hand, the flowing gas is mixed together to form a vortex, ensuring the stable delivery of the gas;

[0021] 3. The exhaust premixed gas is evenly spread out by setting an equalizing plate, so that the premixed gas evenly enters each position of the burner head to ensure that the gas is in an isobaric combustion state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment;

[0023] Figure 2 is a schematic structural diagram of an exhaust hood of an embodiment;

[0024] Figure 3 yes Figure 1 A local enlarged view of point A in FIG.

[0025] Figure 4 2 is a schematic diagram of the structure of the equalizing plate of the embodiment.

[0026] Figure numerals: 1, exhaust hood; 2, fixing frame; 3, mounting frame; 4, fire barrier plate; 41, bottom plate; 42, top plate; 43, air vent; 5, exhaust plate; 6, exhaust hole; 61, strip hole; 62, circular hole; 7, equalizing plate; 71, inner ring; 72, outer ring; 73, diverter plate; 74, diverter channel; 75, plug block; 76, plug hole. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] like Figure 1 , Figure 2 As shown, a fire-blocking structure for a fully premixed water-cooled burner includes an exhaust hood 1, a fixing frame 2, an installation frame 3 and a multi-layer fire-blocking plate 4.

[0029] like Figure 1 , Figure 2 As shown, the exhaust hood 1 is used to connect the gas premixing device, the fixing frame 2 is arranged at the outlet position of the exhaust hood 1, and has a rectangular hole. The mounting frame 3 is arranged behind the fixing frame 2, and the multi-layer fire-blocking plate 4 is arranged on the mounting frame 3 and embedded in the hole in the fixing frame 2.

[0030] like Figure 1 , Figure 3 As shown, the fire-blocking plate 4 includes a bottom plate 41 and a top plate 42 . The bottom plate 41 is arranged horizontally, and the top plate 42 is arranged in a wave shape. Two adjacent layers of fire-blocking plates 4 are in contact with each other, and multiple rows of air-permeable channels 43 are formed between the top plate 42 and the upper and lower layers of the bottom plates 41 .

[0031] like Figure 1 , Figure 3 As shown, in the illustrations of this embodiment, in order to clearly identify the structure of the fire barrier board 4, only a few layers of the fire barrier board 4 are shown, and there are gaps between the fire barrier boards 4. In actual use, there are no gaps between the fire barrier boards 4, and the fixed frame 2 is covered with holes.

[0032] Therefore, when the gas passes through the position of the fire barrier plate 4, by setting the fire barrier plate 4 with evenly distributed air permeable channels 43, the gas can evenly enter the combustion head, allowing the gas to burn as fully as possible, and no combustion will occur on the fire barrier plate 4, thereby preventing backfire.

[0033] like Figure 1 , Figure 3 As shown, an exhaust plate 5 is provided in the fixed frame 2, and a plurality of rows of exhaust holes 6 are evenly distributed on the exhaust plate 5. Therefore, when the gas passes through, the gas can pass through each exhaust hole 6 evenly, thereby realizing uniform gas transportation, allowing the gas to burn as fully as possible, and preventing the occurrence of backfire.

[0034] like Figure 1 , Figure 3 As shown, each row of exhaust holes 6 includes a plurality of long strip holes 61 and a plurality of round holes 62 located between two adjacent strip holes 61 , thereby disrupting the flow pattern of the gas and achieving uniform gas delivery.

[0035] like Figure 1 , Figure 3 As shown, the arrangement of the exhaust holes 6 and the arrangement of the fire-blocking plates 4 are staggered horizontally and vertically to allow the gas to be fully spread out. On the one hand, it can ensure the stable flow direction of the gas, and on the other hand, the flowing gas is mixed together to form a vortex to ensure the stable delivery of the fuel gas.

[0036] like Figure 1 , Figure 4 As shown, an equalizing plate 7 is embedded at the inlet end of the exhaust hood 1. The equalizing plate 7 includes an inner ring 71, an outer ring 72 and a plurality of diverter plates 73. The diverter plates 73 are arranged obliquely, and a diverter channel 74 is formed between two adjacent diverter plates 73.

[0037] Therefore, when the gas passes through the exhaust hood 1, the equalizing plate 7 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.

[0038] like Figure 4 As shown, the inclination angle of the diverter plate 73 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.

[0039] like Figure 4 As shown, plug blocks 75 are provided at both ends of the splitter plate 73, and plug holes 76 for inserting the plug blocks 75 are provided on the inner ring 71 and the outer ring 72. Therefore, when installing the splitter plate 73, the plug blocks 75 cooperate with the plug holes 76 to achieve rapid installation and high-precision positioning of the splitter plate 73, thereby ensuring the stability of the equalizing plate 7 during operation.

[0040] 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 fire-blocking structure for a fully premixed water-cooled burner, characterized in that: include: An exhaust hood (1) is used to connect to a gas premixing device; A fixing frame (2) is arranged at the outlet position of the exhaust hood (1); A mounting frame (3) arranged behind the fixing frame (2); A multi-layer fire-blocking plate (4) is arranged on the installation frame (3) and embedded in the fixing frame (2); The fire-blocking plate (4) comprises a bottom plate (41) and a top plate (42); the bottom plate (41) is arranged horizontally, and the top plate (42) is arranged in a wave shape; a plurality of rows of air-permeable channels (43) are formed between the top plate (42) and the upper and lower layers of the bottom plate (41).

2. The fire-blocking structure for a fully premixed water-cooled combustion machine according to claim 1, characterized in that: An exhaust plate (5) is arranged in the fixing frame (2), and a plurality of rows of exhaust holes (6) are evenly distributed on the exhaust plate (5).

3. The fire-blocking structure for a fully premixed water-cooled combustion machine according to claim 2 is characterized in that: Each row of the exhaust holes (6) comprises a plurality of elongated strip holes (61) and a plurality of circular holes (62) located between two adjacent strip holes (61).

4. The fire-blocking structure for a fully premixed water-cooled combustion machine according to claim 3 is characterized in that: The arrangement of the exhaust holes (6) and the arrangement of the fire-blocking plates (4) are arranged in a staggered manner in both horizontal and vertical directions.

5. The fire-blocking structure for a fully premixed water-cooled combustion machine according to claim 1, characterized in that: An equalizing plate (7) is embedded at the inlet end of the exhaust hood (1).

6. The fire-blocking structure for a fully premixed water-cooled combustion machine according to claim 5, characterized in that: The equalizing plate (7) comprises an inner ring (71), an outer ring (72) and a plurality of flow dividing plates (73); the flow dividing plates (73) are arranged obliquely, and a flow dividing channel (74) is formed between two adjacent flow dividing plates (73).

7. The fire-blocking structure for a fully premixed water-cooled combustion machine according to claim 6, characterized in that: The inclination angle of the diverter plate (73) is 30°-50°.

8. The fire-blocking structure for a fully premixed water-cooled combustion machine according to claim 7, characterized in that: Insertion blocks (75) are provided at both ends of the diverter plate (73), and insertion holes (76) for inserting the insertion blocks (75) are provided on the inner ring (71) and the outer ring (72).

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