Commercial gas stove with external low-voltage power supply

Abstract

The utility model belongs to gas -cooker technical field discloses a kind of commercial gas -cooker of external low-voltage power supply, this gas -cooker is converted into 24V direct current safety very low voltage by using the power adapter of external convertible voltage, realizes the safe work of gas -cooker;The gas -cooker includes cooktop main body, gas system (including gas valve, igniter etc.), safety control system and the 24V low-voltage wiring harness of connecting each component.The utility model removes the 220V high-voltage line and connecting point of traditional gas -cooker through cookware interior completely, fundamentally eliminates electric shock accident and high-voltage short-circuit fire risk caused by internal line aging, breakage, maintenance error touch.

Description

Technical Field

[0001] This utility model belongs to the field of gas stove technology, and in particular relates to a commercial gas stove that can be connected to an external low-voltage power supply. Background Technology

[0002] Commercial gas stoves, as core equipment in the catering industry, directly impact operational efficiency and costs due to their combustion efficiency, compact structure, and ease of maintenance. Currently, most mainstream commercial stoves on the market use 220V AC (or higher) as their operating voltage. Their typical structure involves directly connecting external AC power (usually 220V AC) to the stove's interior via a power cord. Inside the stove, electrical components such as control circuit boards, igniters, solenoid valves, and fans are typically located, all of which operate directly or indirectly under a 220V high-voltage environment. While existing technologies strive to improve safety through enhanced insulation, the addition of leakage current protectors, and improved casing protection, the following shortcomings still exist:

[0003] 1. High risk of electric shock from high voltage: The entire unit contains 220V high-voltage lines and connection points. During daily use, cleaning, maintenance, or when a malfunction occurs inside the equipment (such as insulation aging, component damage, or cable breakage), there is a serious risk of users or maintenance personnel accidentally touching live parts and suffering electric shock. Even if the stove's outer casing is designed to be protective, the complex internal wiring and numerous connection points make it difficult to completely eliminate the risk.

[0004] 2. High risk of cable damage: The power cord connecting the stove, as well as the wiring harnesses connecting various electrical components inside the stove, are constantly exposed to the harsh environment of the kitchen, including high temperature, high humidity, grease, and mechanical stress. The cable sheath is extremely prone to aging, brittleness, wear, or being chewed by rodents. Once the cable insulation is damaged, the exposed 220V high-voltage wires can easily cause short circuits, fires, and electric shocks.

[0005] Therefore, there is an urgent need for a commercial cooktop solution that improves safety from the very nature of its electrical architecture, especially one that significantly reduces the risk of electric shock and fire caused by cable damage or accidental contact. Utility Model Content

[0006] In response to the significant safety hazards such as electric shock, short circuit and fire caused by the 220V internal high-voltage power supply commonly used in existing commercial stoves, especially the safety risks of exposed cables (such as those chewed by rodents or aged and damaged) or accidental contact by personnel, this utility model provides a commercial gas stove based on low-voltage power supply.

[0007] This utility model is implemented as follows: a commercial gas stove that can be connected to an external low-voltage power supply. The gas stove uses an external convertible voltage power adapter to convert the mains power into a safe 24V DC extra-low voltage, thus enabling the gas stove to operate safely. The gas stove includes a stove body, a gas system including a gas valve, an igniter, a safety control system, and a 24V low-voltage wiring harness connecting the various components.

[0008] Furthermore, the main body of the stove has a square frame structure, including a furnace (11), a dual-purpose support 1 (12), a dual-purpose support 2 (13), a burner head (2), a gas stove handle (31), and a gas stove switch (32); the furnace (11) is made of high-temperature resistant cast iron material, and the surface is coated with an anti-corrosion coating; the dual-purpose support 1 (12) and the dual-purpose support 2 (13) are made of 304 stainless steel material, which is easy to clean and takes into account both load-bearing and heat dissipation functions; the burner head (2) is made of cast iron material, which is resistant to high temperature and corrosion, and includes a gas outlet (21), an inner wall of the burner head (22), a gas supply pipe of the burner head (23), a small flow gas inlet (24), an air inlet (25), and an igniter (26).

[0009] Furthermore, the gas system includes a burner gas delivery pipe (23), a high-flow gas valve (4), a small high-speed fan (5), a gas premixing interface (6), a main gas pipeline, and a constant open flame gas pipeline.

[0010] Furthermore, the high-flow gas valve (4) includes a gas inlet (42), a small flame outlet (43), a power interface (44), a large flame outlet (45), and a control lever (41). An external convertible power adapter converts the mains power, usually AC 220V, into safe DC 24V low-voltage power, which is then connected to the round power interface (71) via a male wire. The round power interface (71) is connected to the power interface (44) of the stove via a power cord (72), ensuring the safe operation of the gas stove.

[0011] Furthermore, the small high-speed fan (5) includes a fan inlet (51), an impeller (52), and a fan outlet (53). It adopts a 24V DC brushless motor with a maximum speed of 8000r / min. It is small in size and highly efficient, providing strong air input and ensuring efficient mixing of gas and air. The main gas pipeline and the open flame gas pipeline are made of corrosion-resistant stainless steel to ensure long-term stable operation.

[0012] The main body of the stove is a square frame structure, including a furnace chamber, a dual-purpose support, a burner head, a gas stove handle, and a gas stove switch. The furnace chamber is made of cast iron and has a corrosion-resistant coating. The dual-purpose support is made of stainless steel. The burner head is a cast iron structure and is equipped with a gas outlet, an inner wall of the burner head, a gas delivery pipe, a gas inlet, an air inlet, and an igniter.

[0013] The gas system includes a gas transmission pipe, a high-flow gas valve, a small fan, a gas premixing interface, a main gas pipeline, and a constant open flame gas pipeline.

[0014] The high-flow gas valve includes a gas inlet, a small flame outlet, a power interface, a large flame outlet, and a control lever. The power interface is connected to the output terminal of the power adapter via a power cord.

[0015] The small fan includes a fan inlet, an impeller, and a fan outlet. The fan is driven by a DC brushless motor and connected to the output terminal of the power adapter via a power cord.

[0016] Both the main gas pipeline and the constant open flame gas pipeline are made of stainless steel.

[0017] Based on the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solution to be protected by this utility model are as follows:

[0018] 1. Introduce an independent external low-voltage power supply (7) to move the dangerous 220V mains voltage conversion link to the outside of the stove, and completely eliminate the risk of internal high voltage.

[0019] 2. The wiring harnesses connecting the internal components are all 24V low-voltage harnesses. Their insulation requirements are far lower than those of high-voltage wires. Even if damaged (such as by rodents or wear), the exposed 24V DC power poses virtually no risk of electric shock, and the risk of short circuit and fire is extremely low.

[0020] 3. When maintenance personnel inspect the interior, they only need to face a 24V low-voltage environment, which greatly reduces the risk of electric shock and makes the operation safer and more convenient.

[0021] Through the above technical solution, this utility model completely removes the 220V high-voltage line and connection point that runs through the inside of the traditional gas stove, fundamentally eliminating the risk of electric shock and high-voltage short circuit fire caused by aging, damage, or accidental contact during maintenance of the internal wiring. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the commercial gas stove provided in this embodiment of the utility model;

[0023] Figure 2 This is a bottom view of the commercial gas stove provided in this embodiment of the utility model;

[0024] Figure 3 This is a cross-sectional view of the stove system provided in this embodiment of the utility model;

[0025] Figure 4 This is a connection diagram of the power interface 7 and the power supply interface 44 provided in this embodiment of the utility model;

[0026] Figure 5 This is a flowchart illustrating the operation of the commercial gas stove provided in this embodiment of the utility model. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0028] like Figure 1 , 2 As shown, the structural design and working principle of this utility model are as follows:

[0029] The main body of the stove 1 consists of a combustion chamber 11, a dual-purpose support 1 and 12, a dual-purpose support 2 and 13, a gas stove handle 31, and a gas stove switch 32. The combustion chamber 11 is the core load-bearing component, made of high-temperature resistant cast iron and covered with an anti-corrosion coating to ensure stability even under prolonged high-temperature combustion. The dual-purpose supports 12 and 13 are fixed to the upper edge of the combustion chamber 11 to support cookware of different sizes and also provide heat dissipation. The gas stove handle 31 and the switch 32 are located on one side of the combustion chamber, forming an integrated structure for operation and support.

[0030] The burner head 2, located in the center of the furnace chamber 11, is the core unit for gas combustion. The burner head 2 consists of an inner wall 22, a gas outlet 21, a gas delivery pipe 23, a small-flow gas inlet 24, and an air inlet 25. The igniter 26 is installed inside the inner wall 22 of the burner head and directly engages with the gas outlet 21 to form a stable flame during ignition. The gas delivery pipe 23 connects to the gas pipeline within the stove body, ensuring precise gas delivery to the burner head for combustion.

[0031] The key component of the gas system 2 is the coordination between the high-flow gas valve 4 and the low-flow gas inlet 24. The high-flow gas valve 4 includes a control lever 41, a gas inlet 42, a low-flame outlet 43, a high-flame outlet 45, and an electrical interface 44. The gas inlet 42 is connected to the main gas pipeline. The control lever 41 is used to switch the flame intensity. The electrical interface 44 controls the valve's opening and closing via a low-voltage power supply, achieving the switching between high and low flame outputs. The low-flame outlet 43 corresponds to the low-flow gas inlet 24, thus ensuring that the burner can maintain a constant flame for an extended period.

[0032] The stove's air supply is provided by a small, high-speed fan 5. Fan 5 includes an air inlet 51, an impeller 52, and an air outlet 53. It is driven by a 24V DC brushless motor with a maximum speed of 8000 r / min, capable of generating high-pressure airflow within a confined space. The air outlet 53 is connected to a gas premixing interface 6, ensuring that the gas and air entering the burner 2 are fully mixed before entering the combustion zone, thereby improving combustion efficiency and reducing the risk of incomplete combustion.

[0033] The electrical system forms a closed loop with the external power adapter and the cooktop circuit. The power adapter converts 220V AC mains power to 24V DC low-voltage power, which is connected to the circular power interface 71 via a male wire, and then sent to the gas valve power interface 44 and the fan motor 5 via power line 72. This design ensures the cooktop remains inherently safe during operation, eliminating the risk of electric shock or short-circuit fire caused by high-voltage power. The low-voltage power supply not only meets safety standards but is also compatible with various commercial kitchen scenarios.

[0034] The user controls the opening and closing of the high-flow gas valve 4 via the gas stove switch 32. Gas enters through the gas inlet 42 and is delivered to the burner head 2 through the gas delivery pipe 23. Simultaneously, the blower 5 draws in air from the air inlet 51, compresses it through the impeller 52, and discharges it from the air outlet 53 into the gas premixing interface 6, where it mixes with the gas and is then sent into the burner head for combustion. The igniter 26 generates a spark under the control of a low-voltage power supply to ignite the gas mixture, and the flame is stably ejected from the gas outlet 21. The small flame outlet 43 ensures that a constant flame is maintained even when the main flame is turned off, facilitating restarting. Overall, this achieves an efficient, safe, and stable combustion process.

[0035] Example 1

[0036] This embodiment provides a commercial gas stove based on low-voltage power supply, which includes a combustion chamber 11, a burner head 2, a dual-purpose support 12 and 13, and a gas system 2. The combustion chamber 11 is made of cast iron and covered with an anti-corrosion coating, and houses the burner head 2, which includes a gas outlet 21, a gas delivery pipe 23, an air inlet 25, and an igniter 26. The dual-purpose support 12 and 13 are fixed above the combustion chamber to support cookware of different sizes. The gas system consists of a main gas pipeline, a constant flame gas pipeline, and a high-flow gas valve 4. The high-flow gas valve 4 adjusts the gas flow through a control lever 41. Gas enters through the gas inlet 42 and is delivered to the burner head 2 through the gas delivery pipe 23.

[0037] During ignition, the user operates the gas stove switch 32, energizing the igniter 26 and generating a spark that ignites the gas ejected through the gas outlet 21. The small flame outlet 43 and the small flow inlet 24 maintain a constant open flame output, ensuring stable combustion even when the large flame is turned off. During combustion, the gas and air are mixed by the fan 5, and the high-speed rotation of the impeller 52 ensures thorough premixing of the gas and air before delivery to the combustion zone, thus achieving efficient and stable flame combustion.

[0038] Example 2

[0039] This embodiment provides a gas stove equipped with a small high-speed fan 5. The fan 5 is driven by a DC brushless motor with a maximum speed of 8000 r / min. The fan inlet 51 is connected to the outside air, and the fan outlet 53 is connected to the gas premixing interface 6. Gas enters through a high-flow gas valve 4, mixes rapidly with air in the gas premixing interface 6, and is then transported to the burner head 2 via the gas delivery pipe 23. Because the gas is fully mixed before entering the burner head, the flame combustion is more stable, the flame color is blue, and the combustion efficiency is significantly improved.

[0040] The igniter 26 is located on the inner wall 22 of the burner head, enabling reliable ignition even when the fan is running at high speed. The fan and gas valve are linked via the gas stove switch 32; when turned on, the fan and gas operate synchronously, and when turned off, both stop simultaneously, preventing the risk of gas leakage. Compared to traditional stoves, this embodiment significantly improves the safety and energy efficiency of gas combustion through fan-assisted gas supply, making it suitable for commercial kitchen environments with large exhaust volumes and rapid airflow.

[0041] Example 3

[0042] This embodiment provides a gas stove with a low-voltage power supply architecture. An external power adapter converts 220V AC to 24V DC and connects it to the gas valve power interface 44 and the fan motor via a circular power interface 71 and a power cord 72. The entire electrical system operates at low voltage, eliminating the risks of electric shock and short circuits that can occur with traditional high-voltage power supplies. The low-voltage power supply simultaneously powers the igniter 26, the high-flow gas valve 4, and the fan 5, ensuring the overall system's coordination and safety.

[0043] Once the stove is powered on, the user can control the gas valve by rotating the gas stove switch 32. The power cord 72 transmits the electrical signal to the high-flow gas valve 4, and the electromagnetic structure drives the valve to open and close, precisely controlling the gas flow. Simultaneously, the fan 5 is powered on and starts, providing strong airflow to ensure thorough mixing of gas and air. This implementation achieves system safety isolation through an external power adapter, while also considering stability and energy efficiency, making it particularly suitable for catering establishments with centralized power supply safety requirements.

[0044] Example 4

[0045] This embodiment provides a gas stove that combines constant flame and high-powered combustion. The high-flow gas valve 4 in the gas system 2 is equipped with a high-flame outlet 45 and a low-flame outlet 43. The low-flame outlet 43 is connected to the low-flow gas inlet 24 to ensure a continuous and stable constant flame. When the user turns on the stove, the igniter 26 first ignites the constant flame, then the high-flame outlet 45 opens, and the gas mixes with the air supplied by the fan and is ejected from the gas outlet 21, forming a high-flame combustion state.

[0046] During actual cooking, if the user turns off the high flame, the high-flow gas valve returns to position 4, keeping the constant flame lit for easy restarting of the stove. This dual-channel gas supply structure achieves rapid start-up and stable maintenance, avoiding the inconvenience of frequent ignition. Through the division of labor between the constant flame and the high flame, this embodiment significantly reduces energy consumption and improves the continuity and safety of use while meeting the high-frequency start-stop requirements of catering scenarios.

[0047] In the current gas stove industry, long-standing problems include insufficient combustion efficiency, poor gas-air mixing, and difficulty in ensuring structural stability under high-temperature conditions. Traditional burners are mostly made of ordinary cast iron or welded steel plates, which are prone to oxidation, corrosion, and thermal deformation under prolonged combustion, leading to decreased load-bearing capacity. Simultaneously, the gas valve structure of common stoves is relatively simple, making it difficult to balance high-heat heating with maintaining a constant low flame, thus limiting user flexibility and energy efficiency. These problems directly impact the high-frequency usage needs of the catering industry and home kitchens, restricting the upgrading and replacement of gas appliances.

[0048] In terms of gas systems, conventional stoves primarily rely on mechanical valves to switch flame levels, which suffers from low control precision and slow response. Especially in controlling low-flow gas, structural limitations often prevent the maintenance of a stable, continuous flame, leading to inconvenience in secondary ignition and even increasing the risk of gas leaks. As the catering industry demands higher levels of combustion stability and energy efficiency, existing solutions are insufficient to meet the safety and continuity requirements of high-intensity usage scenarios. This technological bottleneck manifests at the industrial level as poor user experience, increased maintenance costs, and high gas energy consumption.

[0049] Regarding air supply methods, traditional stoves generally use natural draft or low-speed fan assistance, resulting in insufficient mixing of air and gas, which easily leads to incomplete combustion. This produces carbon monoxide and soot deposits, affecting combustion efficiency and posing environmental and health hazards. In the high-load environment of the catering industry, unstable combustion can also cause secondary problems such as flameout and oil fume accumulation, further limiting the industrial application prospects of existing technologies. The resulting technological need is to integrate a highly efficient air supply mechanism and achieve stable gas-air premixing within a limited volume.

[0050] Regarding electrical system safety, most existing stoves are directly powered by 220V AC mains electricity. In the humid, oily, and metal-exposed kitchen environment, there are risks of electric shock, short circuits, and even fires. Although some devices have attempted to incorporate protective circuits, the increased cost and insufficient compatibility make them difficult to adopt in large-scale commercial kitchens. This results in an unresolved contradiction between electrical safety standards and the actual operating conditions in catering establishments, urgently requiring an integrated design of a low-voltage intrinsically safe power supply solution and a gas control system.

[0051] The working principle of this invention is as follows: Gas enters the high-flow gas valve 4 through the gas inlet 42. After adjustment by the control lever 41, it is guided to either the high-fire outlet 45 or the low-fire outlet 43. The low-fire outlet 43 is connected to the low-flow gas inlet 24 of the burner head 2 to ensure the maintenance of a constant open flame. Simultaneously, the blower 5 operates at high speed driven by a DC brushless motor, drawing in air from the blower inlet 51. After compression by the impeller 52, the air is sent to the gas premixing interface 6 through the blower outlet 53, where it is fully mixed with the gas before entering the burner head 2. The igniter 26, under the excitation of a low-voltage power supply, generates a high-frequency spark in the area of ​​the inner wall 22 of the burner head, igniting the gas mixture and ejecting a flame from the gas outlet 21, forming a stable combustion state.

[0052] During overall operation, the furnace 11 provides structural support and bears the combustion zone. The combination of high-temperature resistant cast iron and anti-corrosion coating ensures its stability under long-term high-temperature combustion and oil fume corrosion. The dual-purpose brackets 12 and 13 are fixed to the upper edge of the furnace 11, adaptable to cookware of different sizes and serving a heat dissipation function, preventing localized overheating from affecting combustion stability. The electrical system converts 220V AC mains power to 24V DC low voltage via an external power adapter, supplying it to the power interface 44 of the gas valve 4 and the motor of the fan 5, enabling safe operation of gas switching and air supply. Therefore, in industrial applications, the entire system achieves efficient combustion, low-risk power supply, and convenient firepower switching, overcoming the shortcomings of traditional technologies in terms of stability, safety, and energy efficiency.

[0053] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any modifications, equivalent substitutions and improvements made by those skilled in the art within the technical scope disclosed in this utility model, and within the spirit and principles of this utility model, should be included within the protection scope of this utility model.

Claims

1. A commercial gas stove that can be connected to an external low-voltage power supply, characterized in that, It includes the main body of the stove, the gas system, the safety control system, and the low-voltage wiring harness connecting the various components. The low-voltage wiring harness is connected to the mains power through an external power adapter, which converts AC power into DC power and outputs it to the gas stove.

2. The commercial gas stove according to claim 1, characterized in that, The main body of the stove is a square frame structure, including a furnace chamber, a dual-purpose support, a burner head, a gas stove handle, and a gas stove switch. The furnace chamber is made of cast iron and has a corrosion-resistant coating. The dual-purpose support is made of stainless steel. The burner head is a cast iron structure and is equipped with a gas outlet, an inner wall of the burner head, a gas delivery pipe, a gas inlet, an air inlet, and an igniter.

3. The commercial gas stove according to claim 1, characterized in that, The gas system includes a gas transmission pipe, a high-flow gas valve, a small fan, a gas premixing interface, a main gas pipeline, and a constant open flame gas pipeline.

4. The commercial gas stove according to claim 3, characterized in that, The high-flow gas valve includes a gas inlet, a small flame outlet, a power interface, a large flame outlet, and a control lever. The power interface is connected to the output terminal of the power adapter via a power cord.

5. The commercial gas stove according to claim 3, characterized in that, The small fan includes a fan inlet, an impeller, and a fan outlet. The fan is driven by a DC brushless motor and connected to the output terminal of the power adapter via a power cord.

6. The commercial gas stove according to claim 3, characterized in that, Both the main gas pipeline and the constant open flame gas pipeline are made of stainless steel.

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