Large and small fire burner and cooking range

Abstract

The utility model belongs to the technical field of cooking ranges, and particularly relates to a big and small fire burner which comprises a base, a stove ring is arranged on the base, a fire cover is installed in the stove ring, a combustion chamber is defined by the fire cover and the stove ring, a first premixing cavity is formed in the fire cover, and the first premixing cavity is communicated with a first gas mixing pipe. The second premixing cavity is provided with an air injection hole communicated with the combustion chamber, a mounting hole capable of being connected with the second gas mixing pipe is formed in the base and communicated with the second premixing cavity, and the flow area of the mounting hole is smaller than that of the first gas mixing pipe. According to the burner, mixed gas with large flow is provided by the first gas mixing pipe with large flow area and sprayed out through the fire cover to form big fire with strong fire power, gas supply of the first gas mixing pipe is stopped when slow fire is needed, mixed gas with small flow is provided by the second gas mixing pipe connected in the mounting hole and forms slow fire flames after passing through the gas spraying holes, and then the fire is extinguished. The burner can be used for both big fire and slow fire, and the utilization rate is increased.

Description

Technical Field

[0001] This utility model belongs to the field of stove technology, specifically relating to a large and small flame burner and a stove. Background Technology

[0002] In my country, where Chinese cuisine is the main food, hotels, canteens, and central kitchens are all equipped with commercial gas stoves for cooking Chinese food. The burners in these existing commercial gas stoves mainly consist of a combustion chamber and a burner installed within the combustion chamber. Currently, burners are classified into post-mixed and pre-mixed types based on the mixing method of the gas and air. Post-mixed burners mix the gas with air during combustion, a method of mixing and burning simultaneously; pre-mixed burners mix the gas with air before combustion, and then burn the mixture. Because post-mixed burners are difficult to control in terms of mixing degree, they are prone to uneven mixing and incomplete combustion, and are therefore gradually being replaced by pre-mixed burners.

[0003] Currently, most premixed burners use a fixed airflow mode, employing a large airflow and gas supply to achieve an ideal air-gas ratio, enabling high-fire mode for cooking such as stir-frying and steaming. Reducing the gas supply to a certain level causes flame instability or even extinguishing, making low-fire mode impossible. Conversely, low-fire burners can only provide a small flame. This limits combustion to either high or low fire, reducing burner utilization and requiring separate high-fire and low-fire burners, increasing the user's investment. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a burner and stove with both high and low flames, which can provide both a strong high flame and a gentle low flame.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A large and small flame burner is designed, including a base, a furnace ring on the base, a flame cap installed inside the furnace ring, and a combustion chamber formed between the flame cap and the furnace ring. A first premixing chamber is provided inside the flame cap, and the first premixing chamber is connected to a first mixing pipe. The feature is that a second premixing chamber is provided in the base, the second premixing chamber has a jet hole that connects to the combustion chamber, and an installation hole is provided on the base that can connect to the second mixing pipe. The installation hole is connected to the second premixing chamber, and the flow area of ​​the installation hole is smaller than the flow area of ​​the first mixing pipe.

[0006] Furthermore, the second premixing chamber is located below the flame cap.

[0007] Furthermore, an airflow groove is formed between the burner cap and the base, the airflow groove is isolated from the first premixing chamber, the opening of the airflow groove opens towards the combustion chamber, and the opening of the jet hole is located inside the airflow groove.

[0008] Furthermore, there are two or more jet holes, which are evenly distributed around the circumference of the flame cap.

[0009] Furthermore, the base is also provided with an air injection chamber, which has an air injection hole that connects to the combustion chamber. The base is also provided with an air injection connection port that connects to the air injection chamber.

[0010] Furthermore, an annular groove is provided on the base, the annular groove is located on the outer periphery of the second premixing chamber, a partition is provided on the annular groove, the partition, the furnace ring and the fire cover form a combustion chamber, and the partition and the base form a gas replenishment chamber.

[0011] Furthermore, the air injection port is located on the bottom wall of the combustion chamber, and a drain hole that can connect to the outside is also provided on the bottom wall of the air injection chamber.

[0012] Furthermore, a fire-gathering ring is provided on the inner wall of the furnace ring, and a combustion chamber is formed between the fire-gathering ring and the fire cover.

[0013] Furthermore, an electronic ignition needle is installed in the combustion chamber.

[0014] This utility model also provides a stove, including a burner, characterized in that: the burner is the above-mentioned large and small flame burner.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model can provide a large flow of mixed gas through a first mixing pipe with a relatively large flow area. The mixed gas is sprayed out through the burner cap to form a strong flame. When a low flame is needed, the gas supply from the first mixing pipe is stopped, and a second mixing pipe connected in the mounting hole provides a small flow of mixed gas. The mixed gas is then sprayed through the jet hole to form a low flame, thus realizing the switching between high and low flames. This allows the burner to be used for both high and low flames, improving its utilization rate.

[0017] 2. The second premix chamber is located below the burner cap, so that the burner caps for high heat and low heat are distributed vertically. This saves space and reduces the size of the burner, while also allowing for centrally supplied high or low heat for cooking.

[0018] 3. Because the burner cap and the base form an airflow groove that is isolated from the first mixing chamber, the opening of the airflow groove opens towards the combustion chamber, and the opening of the jet hole is located inside the airflow groove. This allows the large and small flames to be independent of each other and not affect each other; it also allows the burner cap to protect the jet hole from being blocked by overflowing material, and it also allows the mixed gas ejected from the jet hole to be mixed more evenly.

[0019] 4. Set the number of air vents to two or more. The two or more air vents are evenly distributed around the circumference of the flame cap, which can provide a gentle flame with even heat distribution.

[0020] 5. The base also has an air supply chamber with an air supply hole that connects to the combustion chamber. The base also has an air supply connection port that connects to the air supply chamber. An air supply pipeline can be connected to the air supply connection port, thereby supplementing the combustion chamber with air through the air supply chamber and the air supply hole, so that the gas can be burned more completely, saving energy and being environmentally friendly.

[0021] 6. The air injection hole is set on the bottom wall of the combustion chamber. The bottom wall of the air injection chamber is also provided with a drain hole that can connect to the outside, so that the air injection hole can also be used to drain the soup that overflows during cooking, so that it collects into the air injection chamber and is then discharged from the drain hole.

[0022] 7. Because the inner wall of the furnace ring is lined with a fire-gathering ring, it can play a role in heat insulation and improve the fire-gathering effect.

[0023] 8. This utility model has a clever design that organically integrates high and low flames, allowing for switching between them. It can operate at both high and low flames, improving the utilization rate of the burner head and is worthy of promotion and use in the industry. Attached Figure Description

[0024] Figure 1 This is a three-dimensional exploded view of this utility model;

[0025] Figure 2 yes Figure 1 View from direction A;

[0026] Figure 3 yes Figure 2 BB section view;

[0027] Figure 4 yes Figure 2 CC section view;

[0028] Figure 5 yes Figure 4 Enlarged cross-sectional view of the DD.

[0029] The following are marked in the diagram: 1. Base; 2. Furnace ring; 3. Flame concentrator ring; 4. Flame cap; 5. Baffle plate; 6. Air jet hole; 7. Air supply hole; 8. Mounting hole; 9. Air supply connection port; 10. Electronic ignition needle; 11. Drain hole; 12. First premixing chamber; 13. Combustion chamber; 14. First mixing pipe; 15. Second premixing chamber; 16. Air supply chamber; 17. Airflow groove. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] When this utility model is in working condition, the end away from the ground is defined as the top or upper end, and the other end closer to the ground is defined as the lower end or bottom end; the side closer to the center of the flame cap 4 is defined as the inner side, and the other side away from the center of the flame cap 4 is defined as the outer side.

[0032] like Figure 1 As shown, this utility model has a stove ring 2 on the base 1, and a heat-insulating fire-concentrating ring 3 is lined on the inner wall of the stove ring 2. This reduces heat diffusion while concentrating and focusing the heat and flame upwards as much as possible. A flame cap 4 is installed inside the fire-concentrating ring 3, forming a combustion chamber 13 between the flame cap 4 and the fire-concentrating ring 3. A first premixing chamber 12 is provided inside the flame cap 4, connected to a first mixing pipe 14. A second premixing chamber 15 is also provided in the base 1, located below the flame cap 4. This arrangement ensures that the flame cap 4 for high-heat and low-heat cooking are vertically distributed, saving space and reducing the burner's volume; it also allows for centered supply of either high or low heat, ensuring that both cooking methods are centered. Figure 5 As shown, the second premixing chamber 15 has 20 jet holes 6 communicating with the combustion chamber 13, which are evenly distributed around the circumference of the burner cap 4. Figure 2 As shown, the base 1 has an installation hole 8 that can be connected to the second mixing pipe. The installation hole 8 is connected to the second premixing chamber 15. The flow area of ​​the installation hole 8 is smaller than the flow area of ​​the first mixing pipe 14. The flow area mentioned here refers to the cross-sectional area perpendicular to the airflow direction. For example, the flow area of ​​the first mixing pipe 14 is the inner diameter area of ​​the pipe along the pipe diameter direction. When in use, the second mixing pipe is installed in the installation hole 8, and the second mixing pipe completes the supply of gas and air for the small flame.

[0033] To prevent cooking broth from spilling onto the vent 6, which could extinguish the flame or even clog the vent 6, such as... Figure 3 As shown, this utility model forms an airflow groove 17 between the burner cap 4 and the base 1. Specifically, a "V"-shaped groove is formed on the connecting surface of the burner cap 4 and the base 1, so that the airflow groove 17 is isolated from the first premixing chamber 12. The opening of the airflow groove 17 opens towards the combustion chamber 13, and the opening of the jet hole 6 is located inside the airflow groove 17. This can maintain the isolation and independence of the first premixing chamber 12 and the second premixing chamber 15, so that they do not affect each other. This allows the jet hole 6 to be directly connected to the combustion chamber 13. It can also make the burner cap 4 protect the jet hole 6, preventing the jet hole 6 from being blocked by overflow. It can also make the mixed gas ejected from the jet hole 6 more evenly mixed.

[0034] To supplement air into the combustion process and promote more complete combustion of the fuel gas, such as Figure 4As shown, this utility model also includes an air replenishment chamber 16 in the base 1. Specifically, an annular groove is formed on the base 1, located on the outer periphery of the second premixing chamber 15. A partition 5 is provided on the annular groove, thus forming a combustion chamber 13 with the partition 5, the furnace ring 2, and the burner cap 4. The partition 5 and the base 1 together form the air replenishment chamber 16, which has an air replenishment hole 7 connecting to the combustion chamber 13. An air replenishment connection port 9 is also provided on the base 1, connecting to the air replenishment chamber 16. In use, an air replenishment pipe is connected to the air replenishment connection port 9 to replenish air into the air replenishment chamber 16. The air replenishment hole 7 is located on the partition 5, on the bottom wall of the combustion chamber 13. A drain hole 11 connecting to the outside is also provided on the bottom wall of the air replenishment chamber 16. Thus, the air replenishment hole 7 can also be used to drain the overflowing broth during cooking, allowing it to collect in the air replenishment chamber 16. When draining, the drain hole 11 is opened to drain the broth.

[0035] This invention also includes an electronic ignition needle 10 installed in the combustion chamber 13 to achieve electronic ignition for both high and low flames.

[0036] The above-mentioned burners can also be applied to gas stoves to form gas stoves that can provide both large and small flames.

[0037] The aforementioned flame cap 4 is prior art, and can be found in the flame caps of utility model patents with publication numbers CN218914923U, CN222256548U, and CN220689070U, so it will not be described in detail here.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the scope of the technical solution of this utility model are not permitted.

Claims

1. A large and small flame burner, comprising a base, a furnace ring on the base, a flame cap installed inside the furnace ring, a combustion chamber formed between the flame cap and the furnace ring, a first premixing chamber provided inside the flame cap, the first premixing chamber being connected to a first mixing pipe, characterized in that: The base has a second premixing chamber with an injection port that connects to the combustion chamber. The base has an installation hole that connects to the second mixing pipe. The installation hole is connected to the second premixing chamber and the flow area of ​​the installation hole is smaller than the flow area of ​​the first mixing pipe.

2. The large and small flame burner according to claim 1, characterized in that: The second premixing chamber is located below the burner cap.

3. The large and small fire burner according to claim 2, characterized in that: The burner cap and the base form an airflow groove, which is isolated from the first premixing chamber. The opening of the airflow groove faces the combustion chamber, and the opening of the jet hole is located inside the airflow groove.

4. The large and small fire burner according to claim 3, characterized in that: There are two or more air vents, which are evenly distributed around the circumference of the flame cap.

5. The large and small flame burner according to any one of claims 1 to 4, characterized in that: The base is also provided with an air injection chamber, which has an air injection hole that connects to the combustion chamber. The base is also provided with an air injection connection port that connects to the air injection chamber.

6. The large and small fire burner according to claim 5, characterized in that: The base has an annular groove located on the outer periphery of the second premixing chamber. A partition is provided on the annular groove. The partition, the furnace ring, and the fire cover form a combustion chamber. The partition and the base form a gas supply chamber.

7. The large and small fire burner according to claim 6, characterized in that: The air injection port is located on the bottom wall of the combustion chamber, and a drain hole that can connect to the outside is also provided on the bottom wall of the air injection chamber.

8. The large and small fire burner according to claim 7, characterized in that: The inner wall of the furnace ring is lined with a fire-gathering ring, and a combustion chamber is formed between the fire-gathering ring and the fire cover.

9. The large and small flame burner according to any one of claims 1 to 4, characterized in that: An electronic ignition needle is installed in the combustion chamber.

10. A stove, comprising a burner, characterized in that: The burner is the large or small flame burner as described in any one of claims 1 to 9.

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