Gas and air premixing device for a burner

Abstract

The utility model relates to kitchen utensil technical field, concretely is a kind of gas and air premixing device for furnace head, including tee pipe, the bottom opening of tee pipe is connected with mounting seat by screw thread, the center of mounting seat is equipped with first threaded hole, and premixing pipe is inserted in mounting cavity, which is internally provided with mounting cavity, gas nozzle is located inside premixing pipe, the height of premixing pipe is higher than the side opening of tee pipe, the circumference of premixing pipe is equipped with several air through holes, the height of air through hole is flush with the side opening of tee pipe, air through hole is connected with the guide vane that is inclined to premixing pipe inside, and several guide vanes are inclined in the same direction around the center of premixing pipe. Due to the annular space between premixing pipe and tee pipe and the guide vane effect of inclined setting, air high-speed rotation enters premixing pipe, and then air and gas are uniformly mixed in premixing pipe.

Description

Technical Field

[0001] This utility model relates to the field of kitchenware technology, specifically a gas and air premixing device for a stove. Background Technology

[0002] Gas stoves typically have only one gas supply line. When gas is sprayed through the nozzle, it carries air into the burner, where it burns together. However, the amount of air introduced through the nozzle is limited, which can easily lead to incomplete combustion of the gas, producing carbon monoxide. This reduces gas utilization, wastes energy, and causes environmental pollution.

[0003] In response to the above problems, the applicant disclosed a premixer in Chinese utility model patent with publication number CN222798996U, in which gas and air are uniformly mixed and the mixed gas is burned in the burner, which can improve the utilization rate of gas.

[0004] However, the existing structure has the following problems: First, the mixing effect is not good and still needs to be improved; second, in actual use, soup and washing water produced during cooking sometimes enter the burner and can easily enter the premixer through the pipe at the bottom of the burner. If there is too much water, it will enter the gas nozzle, causing the gas nozzle to be blocked, affecting the gas intake and making the whole operation impossible. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a gas and air premixing device for a stove head.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A gas and air premixing device for a stove head includes a three-way pipe. The bottom opening of the three-way pipe is threadedly connected to a mounting base. A first threaded hole is opened at the center of the mounting base, and a gas nozzle is threadedly connected through the first threaded hole. The mounting base has an installation cavity inside, and a premixing pipe is inserted into the installation cavity. The gas nozzle is located inside the premixing pipe. The height of the premixing pipe is higher than the side opening of the three-way pipe. Several air passages are opened around the circumference of the premixing pipe. The height of the air passages is flush with the side opening of the three-way pipe. A guide plate inclined towards the inside of the premixing pipe is connected to the air passage. The several guide plates are inclined clockwise in the same direction around the center of the premixing pipe.

[0007] In the above structure, the side opening of the tee is used to connect to air, the gas nozzle is used to connect to gas, and the top opening of the tee is used to connect to the burner head. The air supplied from the side opening enters the premixing pipe through the air vent. Due to the annular space between the premixing pipe and the tee and the effect of the inclined guide plate, the air enters the premixing pipe at high speed and rotates together with the gas ejected from the gas nozzle inside the premixing pipe, thereby causing the air and gas to mix evenly in the premixing pipe to facilitate complete combustion in the burner head.

[0008] The gas nozzle is equipped with multiple nozzles, the height of which is higher than the lowest point of the side opening of the tee and the air vent. Cooking liquid and washing water enter the burner head and flow into the premixing pipe below. Due to the high nozzle height, the water preferentially flows out through the air vent and into the side opening of the tee, thus flowing into the air duct without clogging the gas nozzle. Because the air duct has a larger diameter, it will not be completely blocked, and compared to gas, the air end is less dangerous, thereby reducing the overall risk.

[0009] The top opening of the tee pipe is threaded with a connecting pipe, which is used to connect to the lower part of the burner head.

[0010] A retaining ring is connected to the top of the premixed tube, and the retaining ring is attached to the bottom surface of the connecting tube.

[0011] The retaining ring has several hanging holes, and the top of the premixed tube is provided with multiple hanging plates. The hanging plates pass through the hanging holes and are bent on the surface of the retaining ring to connect the premixed tube and the retaining ring.

[0012] The lower end of the premixed pipe has multiple mounting through holes, and a bending clamp is installed in the mounting through holes. The bending clamp is pressed against the inner surface of the mounting cavity to ensure the connection stability between the premixed pipe and the mounting base.

[0013] The beneficial effects achieved by this utility model are: In this invention, since the air inlet direction is tangent to the outer surface of the premixing tube, and the premixing tube is provided with air passages and guide plates, the air entering the premixing tube is in a swirling flow. The air and the gas flow in a swirling manner, thus mixing evenly and making the subsequent combustion in the burner head more complete.

[0014] In this invention, the gas nozzle is vertically positioned and its air outlet is high, effectively preventing water from entering the gas nozzle and improving overall safety. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of this utility model. Figure 3 ; Figure 4 yes Figure 3 AA section view; Figure 5 This is a schematic diagram of the premixed tube structure.

[0016] In the diagram: 1. Tee; 2. Connecting pipe; 3. Mounting base; 4. Gas nozzle; 5. Premixing pipe; 6. Air vent; 7. Guide plate; 8. Air jet nozzle; 9. Retaining ring; 10. Hanging plate; 11. Bending clamp; 12. Mounting through hole. Detailed Implementation

[0017] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] Example: like Figures 1-5 As shown, a gas and air premixing device for a stove head includes a three-way pipe 1. The bottom opening of the three-way pipe 1 is threadedly connected to a mounting base 3. A first threaded hole is opened at the center of the mounting base 3, and a gas nozzle 4 is threadedly connected through the first threaded hole. The mounting base 3 has an installation cavity inside, and a premixing pipe 5 is inserted into the installation cavity. The gas nozzle 4 is located inside the premixing pipe 5. The height of the premixing pipe 5 is higher than the side opening of the three-way pipe 1. Several air passages 6 are opened around the circumference of the premixing pipe 5. The height of the air passages 6 is flush with the side opening of the three-way pipe 1. A guide plate 7 inclined towards the inside of the premixing pipe 5 is connected to the air passages 6. The several guide plates 7 are inclined clockwise in the same direction around the center of the premixing pipe 5.

[0019] In the above structure, the side opening of the three-way pipe 1 is used to connect to the air duct, which is connected to the output air of the blower. The gas nozzle 4 is used to connect to the gas, and the top opening of the three-way pipe 1 is used to connect to the burner head. The air supplied from the side opening enters the premixing pipe 5 through the air passage 6. Furthermore, due to the annular space between the premixing pipe 5 and the three-way pipe 1, as well as the effect of the inclined guide plate 7, the air enters the premixing pipe 5 at high speed and rotates together with the gas ejected from the gas nozzle 4 inside the premixing pipe 5, thereby causing the air and gas to be uniformly mixed inside the premixing pipe 5.

[0020] The gas nozzle 4 is equipped with multiple nozzles 8, the height of which is higher than the lowest point of the side opening of the tee pipe 1 and the air vent 6. Cooking liquids and washing water enter the burner head and flow into the premix pipe 5 from below. Due to the height of the nozzles 8, any accidentally flowing water preferentially exits through the air vent 6 and can flow into the side opening of the tee pipe 1 and into the air duct, without clogging the gas nozzle 4. Because the air duct has a larger diameter, it generally will not be completely blocked, and compared to gas, the air end poses a lower risk.

[0021] The top opening of the tee pipe 1 is threadedly connected to a connecting pipe 2. The connecting pipe 2 is used to connect to the lower part of the burner head, and the two are connected by threads.

[0022] A retaining ring 9 is connected to the top of the premixed tube 5. The retaining ring 9 is attached to the bottom surface of the connecting tube 2, thereby ensuring that the gas in the premixed tube 5 enters the connecting tube 2.

[0023] The retaining ring 9 has several hanging holes, and the top of the premixing pipe 5 is provided with multiple hanging plates 10. The hanging plates 10 pass through the hanging holes and are bent and hung on the surface of the retaining ring 9 to realize the connection between the premixing pipe 5 and the retaining ring 9.

[0024] like Figure 4 , Figure 5 As shown, the lower end of the premixed pipe 5 is provided with a plurality of mounting through holes 12. A bending clamping plate 11 is provided in the mounting through hole 12. The bending clamping plate 11 bends outward of the premixed pipe 5 and can be pressed against the inner surface of the mounting cavity to ensure the connection stability between the premixed pipe 5 and the mounting base 3.

Claims

1. A gas and air premixing device for a burner tip, characterized by, The device includes a three-way pipe (1), with a mounting base (3) threadedly connected to the bottom opening of the three-way pipe (1). A first threaded hole is provided at the center of the mounting base (3), and a gas nozzle (4) is threadedly connected through the first threaded hole. An installation cavity is provided inside the mounting base (3), and a premixed pipe (5) is inserted into the installation cavity. The gas nozzle (4) is located inside the premixed pipe (5). The height of the premixed pipe (5) is higher than the side opening of the three-way pipe (1). Several air passages (6) are provided around the circumference of the premixed pipe (5). The height of the air passages (6) is flush with the side opening of the three-way pipe (1). A guide plate (7) inclined towards the inside of the premixed pipe (5) is connected to the air passage (6). Several guide plates (7) are inclined clockwise around the center of the premixed pipe (5) in the same direction.

2. The gas and air premixing device for a burner tip according to claim 1, characterized in that, The gas nozzle (4) is provided with multiple air jets (8), and the height of the air jets (8) is higher than the lowest point of the side opening of the three-way pipe (1) and the air passage (6).

3. The gas and air premixing device for a burner tip according to claim 1, characterized in that, The top opening of the tee pipe (1) is threadedly connected to the connecting pipe (2).

4. The gas and air premixing device for the burner head according to claim 3, characterized in that, The top of the premixed pipe (5) is connected to a retaining ring (9), which is attached to the bottom surface of the connecting pipe (2).

5. The gas and air premixing device for the burner head according to claim 4, characterized in that, The retaining ring (9) has several hanging holes, and the top of the premixed pipe (5) is provided with multiple hanging plates (10). The hanging plates (10) pass through the hanging holes and are bent on the surface of the retaining ring (9).

6. The gas and air premixing device for the burner head according to claim 1, characterized in that, The premixed tube (5) has multiple mounting through holes (12) at one end of its lower part. A bending clamp (11) is provided in the mounting through hole (12) and is pressed against the inner surface of the mounting cavity.

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