Premixer

Abstract

The utility model relates to the technical field of combustors, in particular to a premixer, which comprises an air interface, a gas inlet and a gas outlet, the gas connecting pipe is arranged in the air connector; the buffer plate is arranged in the air interface, and a plurality of buffer holes are formed in the buffer plate; the gas outlet is formed in the gas connecting pipe and located in the side, facing the furnace end, of the buffer plate. The diameter of the buffer holes of the buffer plate outer ring is larger than that of the buffer holes of the buffer plate inner ring. And the gas outlets are circumferentially and uniformly distributed on the outer wall of the gas connecting pipe. The gas connecting pipe penetrates through the center of the buffer plate. A plurality of turbine blades are arranged in the air connector, and the gas outlet is located between the buffer plate and the turbine blades. The outer side of the turbine fan blade is fixedly connected with the air connector through an outer ring plate. The inner sides of the turbine blades are connected through a center plate. Fuel gas and air can be further fully mixed, and the heat efficiency and the power of the gas cooker are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to a premixer. Background Art

[0002] Gas has entered thousands of households as a clean and convenient energy source. At present, gas stoves used for cooking usually have only one pipeline for delivering gas. After the gas is ejected from the nozzle, it drives air into the stove and is ejected from the stove to burn. Since this type of stove can introduce a small amount of air, it is easy to cause incomplete combustion of gas to produce carbon monoxide, resulting in low gas utilization, energy waste and environmental pollution.

[0003] Premixed combustion means that the gas and air are evenly mixed in the premixer, and the mixed gas is burned on the burner, which can improve the utilization rate of the gas. The structural design of the premixer has a great influence on the combustion of the mixed gas. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model provides a premixer, which can further fully mix the gas and air, and significantly improve the thermal efficiency and power of the gas cooker.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A premixer, comprising:

[0007] The air interface is connected with the furnace head through a connecting pipe;

[0008] The gas pipe is installed in the air interface;

[0009] A buffer plate is arranged in the air interface, and a plurality of buffer holes are arranged on the buffer plate;

[0010] The gas outlet is arranged on the gas connecting pipe, and the gas outlet is located on the side of the buffer plate facing the burner head.

[0011] Furthermore, the diameter of the buffer hole of the outer circle of the buffer plate is greater than the diameter of the buffer hole of the inner circle of the buffer plate.

[0012] Furthermore, the gas outlets are evenly distributed around the circumference of the gas pipe on the outer wall.

[0013] Furthermore, the gas pipe passes through the center of the buffer plate.

[0014] Furthermore, a plurality of turbine blades are arranged in the air interface, and the gas outlet is located between the buffer plate and the turbine blades.

[0015] Furthermore, the outer side of the turbine blade is fixedly connected to the air interface through an outer ring plate.

[0016] Furthermore, the inner sides of the turbine blades are connected to each other through a center plate.

[0017] Furthermore, there are 8 turbine blades evenly distributed around the circumference.

[0018] Furthermore, the angle between the turbine blade and the cross section of the air interface is 40°-50°.

[0019] Furthermore, the diameter of the air inlet end of the air interface is greater than the diameter of the air outlet end of the air interface.

[0020] Beneficial effects of the utility model:

[0021] (1) The buffer plate can buffer the air flowing to the burner, distribute the air evenly, and limit the air flow.

[0022] (2) Turbine blades can change the flow direction of the mixed gas, making the gas mixing more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 yes Figure 1 A local enlarged view of position A;

[0026] Figure 3 yes Figure 1 A local enlarged view of position B;

[0027] Figure 4 It is a schematic diagram of the structure of the furnace head;

[0028] Figure 5 yes Figure 4 A local enlarged view of the C position.

[0029] In the picture:

[0030] 1. Air interface, 2. Buffer plate, 3. Gas pipe, 4. Gas outlet, 5. Turbine fan blade, 6. Connecting pipe, 7. Fire starter air supply port, 8. Fire starter gas pipe, 9. First cavity, 10. Second cavity, 11. Third cavity, 12. Exhaust port, 13. Mesh plate, 14. Guide column, 15. Guide angle

[0031] 201. Buffer hole

[0032] 501. Center plate, 502. Outer ring plate

[0033] 1401. diversion tip, 1402. diversion slope, 1403. diversion back. DETAILED DESCRIPTION

[0034] The utility model is further described in detail below with reference to the accompanying drawings.

[0035] A premixer includes an air interface 1, which is connected to a burner through a connecting pipe 6. The diameter of the air inlet end of the air interface 1 is larger than the diameter of the air outlet end of the air interface 1, which can increase the gas flow rate at the air outlet end of the air interface 1. A gas pipe 3 is arranged in the air interface 1, and a buffer plate 2 is arranged in the air interface 1. The buffer plate 2 can buffer the air flowing to the burner, make the air evenly distributed, and limit the air flow. The gas pipe 3 passes through the center of the buffer plate 2, and a plurality of buffer holes 201 are arranged on the buffer plate 2. The diameter of the buffer holes 201 in the outer circle of the buffer plate 2 is larger than the diameter of the buffer holes 201 in the inner circle of the buffer plate 2. By changing the diameter of the buffer holes 201, the circulation and mixing of the inner and outer layer gases can be made more uniform.

[0036] The gas outlet 4 is arranged on the gas pipe 3, and the gas outlet 4 is located on the side of the buffer plate 2 facing the burner. The gas outlet 4 is a circle of small circular holes, and the gas outlet 4 is evenly distributed on the outer wall of the gas pipe 3. The gas is ejected from the circle of small circular holes and is preliminarily mixed with the air. A plurality of turbine blades 5 are arranged in the air interface 1, and the turbine blades 5 are arranged on the side of the gas outlet 4 facing the burner. The gas outlet 4 is located between the turbine blades 5 and the buffer plate 2. The turbine blades 5 can change the flow direction of the mixed gas to make the gas mixing more uniform.

[0037] The outer side of the turbine blade 5 is fixedly connected to the air interface 1 through the outer ring plate 502, and the outer ring plate 502 can make the welding between the turbine blade 5 and the air interface 1 more convenient and beautiful. The inner side of the turbine blade 5 is connected to each other through the center plate 501, and the center plate 501 is located at the center of the air interface 1. There is spot welding between the turbine blade 5 and the center plate 501, and there is spot welding between the turbine blade 5 and the outer ring plate 502. The spot welding on both sides of the turbine blade 5 can make the turbine blade 5 have a certain vibration margin. When the gas passes through the turbine blade 5, the turbine blade 5 can generate slight vibrations, thereby generating certain disturbances to the gas and air, so that the gas and air are further fully mixed.

[0038] In a specific implementation, eight turbine blades 5 are evenly distributed around the circumference, and the angle between the turbine blades 5 and the cross section of the air interface 1 is 40°-50°. The turbine blades 5 have the best mixing effect on the gas and air.

[0039] The specific structure of the burner head includes a first cavity 9, a second cavity 10 and a third cavity 11 which are connected in sequence, and the first cavity 9, the second cavity 10 and the third cavity 11 are all rotating structures. The first cavity 9 is connected to the connecting pipe 6, the second cavity 10 is connected to the first cavity 9, and the third cavity 11 is connected to the second cavity 10. The upper end of the third cavity 11 is provided with an exhaust port 12, and the mixed gas passes through the connecting pipe 6, the first cavity 9, the second cavity 10 and the third cavity 11 in sequence and is discharged from the exhaust port 12. A fire starter gas pipe 8 and a fire starter air supply port 7 are provided in the center of the burner head, and the fire starter gas pipe 8 and the fire starter air supply port 7 are connected to each other.

[0040] In order to further mix the gases and evenly distribute the mixed gases around, an annular mesh plate 13 is provided between the second cavity 10 and the third cavity 11. The mesh plate 13 is covered with air holes, and the mixed gases in the second cavity 10 enter the third cavity 11 through the mesh plate 13. In addition, a guide column 14 is provided between the first cavity 9 and the second cavity 10, and the mixed gases in the first cavity 9 enter the second cavity 10 through the guide column 14.

[0041] The specific structure of the guide column 14 includes a guide tip 1401, the guide tip 1401 faces the connecting pipe 6, the guide slope 1402 is arranged at a certain angle on both sides of the guide tip 1401, and the guide back 1403 is arranged on the back side of the guide tip 1401. The guide tip 1401, the guide slope 1402 and the guide back 1403 form a triangular column. The guide tip 1401 can adopt an arc angle, and the guide slope 1402 and the guide back 1403 can adopt an arc surface. In a specific implementation, the guide slope 1402 adopts an inwardly concave arc surface, and the guide back 1403 adopts an outwardly convex arc surface.

[0042] The guide columns 14 have several circles, and the guide columns 14 in the outer circle are arranged alternately with the guide columns 14 in the inner circle, so as to further mix the gas and evenly distribute the mixed gas to the surroundings.

[0043] A downwardly protruding guide angle 15 is provided in the first cavity 9 . The guide angle 15 is provided above the connecting pipe 6 . The guide angle 15 can reduce the flow resistance of the mixed gas flowing out of the connecting pipe 6 , so that the mixed gas flows more smoothly.

[0044] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A premixer, characterized in that: include: The air interface (1) is connected to the furnace head via a connecting pipe (6); A gas pipe (3) is arranged in the air interface (1); A buffer plate (2) is arranged in the air interface (1), and a plurality of buffer holes (201) are arranged on the buffer plate (2); A gas outlet (4) is arranged on the gas connecting pipe (3), and the gas outlet (4) is located on a side of the buffer plate (2) facing the burner head.

2. A premixer according to claim 1, characterized in that: The diameter of the buffer hole (201) on the outer ring of the buffer plate (2) is greater than the diameter of the buffer hole (201) on the inner ring of the buffer plate (2).

3. A premixer according to claim 1, characterized in that: The gas outlets (4) are evenly distributed around the circumference and arranged on the outer wall of the gas connecting pipe (3).

4. A premixer according to claim 1, characterized in that: The gas connecting pipe (3) passes through the center of the buffer plate (2).

5. A premixer according to claim 1, characterized in that: A plurality of turbine blades (5) are arranged in the air interface (1), and the gas outlet (4) is located between the buffer plate (2) and the turbine blades (5).

6. A premixer according to claim 5, characterized in that: The outer side of the turbine blade (5) is fixedly connected to the air interface (1) via an outer ring plate (502).

7. A premixer according to claim 5, characterized in that: The inner sides of the turbine blades (5) are connected to each other via a central plate (501).

8. A premixer according to claim 5, characterized in that: The turbine blades (5) are arranged in eight numbers evenly distributed around the circumference.

9. A premixer according to claim 5, characterized in that: The included angle between the cross section of the turbine blade (5) and the air interface (1) is 40°-50°.

10. A premixer according to claim 1, characterized in that: The diameter of the air inlet end of the air interface (1) is greater than the diameter of the air outlet end of the air interface (1).

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