Gas distribution device of portable gas stove and portable gas stove

Abstract

A gas distribution device of a portable gas stove comprises a device body, the device body comprises at least one longitudinal distribution part, a plurality of transverse distribution parts are arranged on both sides of the longitudinal distribution part along the length direction of the longitudinal distribution part and are communicated with the longitudinal distribution part, and a plurality of preset hole positions are arranged on the longitudinal distribution part and the transverse distribution part respectively; wherein, at least one of the preset hole positions is opened to form a gas outlet hole, and at least one of the preset hole positions remains in a closed state; and a gas nozzle is arranged at the gas outlet hole. By adopting the mode of standardizing semi-finished products and opening holes according to needs, a plurality of different specifications of gas distribution devices can be produced flexibly and efficiently at very low mold and inventory costs, and the production flexibility and market response speed are greatly improved.

Description

[Technical Field] This utility model relates to the field of gas stove technology, and in particular to a gas distribution device for a portable gas stove and a portable gas stove. [Background Technology] Portable gas stoves are commonly used cooking appliances for outdoor activities and home emergencies. One of their core components is the gas distribution device, which is used to deliver gas from a single gas source to one or more burners.

[0001] As market demands diversify, users have raised different requirements for the specifications of portable gas stoves, such as needing different numbers or layouts of burners to adapt to different cooking scenarios. However, existing gas distribution devices generally have inherent limitations in meeting such diverse needs.

[0002] Existing gas distribution devices typically have a dedicated, fixed structure. Specifically, a stove with a specific number of burners has a gas distribution device with a fixed number of gas outlets. This means that each different product requires a dedicated gas distribution device with a completely different structure.

[0003] This rigid production model, where a single specification corresponds to a single design, directly leads to two major drawbacks: First, high production costs. Manufacturers must design, develop, and manufacture dedicated production molds for each different specification of product. This not only results in high mold investment but also significantly increases the complexity and cost of warehousing and inventory management as product lines expand and multiple different specifications of semi-finished or finished products coexist. Second, poor production flexibility. It is difficult to quickly respond to dynamic market changes or customized customer orders. If a product with a new layout or a new number of burners is to be launched, the lengthy mold development cycle will cause it to miss market opportunities. [Utility Model Content] The purpose of this utility model is to provide a gas distribution device for a portable gas stove and a portable gas stove, aiming to solve the technical problems in the prior art where the fixed structure of the gas distribution device leads to the need to develop multiple sets of molds when producing products of different specifications, resulting in high manufacturing costs, complex inventory management and poor production flexibility.

[0004] This utility model is achieved through the following technical solution: A gas distribution device for a portable gas stove includes a device body, the device body including at least one longitudinal distribution section, and a plurality of transverse distribution sections communicating with it are provided on both sides along the length direction of the at least one longitudinal distribution section, and a plurality of preset holes are provided on the longitudinal distribution section and the transverse distribution sections respectively. In this configuration, at least one of the preset holes is opened to form an air outlet, and at least one of the preset holes remains closed; a gas nozzle is installed at the air outlet.

[0005] As described above, the gas distribution device for the portable gas stove has a longitudinal distribution cavity within the longitudinal distribution section, and multiple transverse distribution sections each have a transverse distribution cavity communicating with the longitudinal distribution cavity.

[0006] The gas distribution device for the portable gas stove described above is integrally formed by die casting, and the longitudinal distribution cavity and the transverse distribution cavity are formed by die casting core pulling process.

[0007] As described above, in the gas distribution device of the portable gas stove, a first process hole is formed at at least one end of the longitudinal distribution chamber, and a second process hole is formed at the end of each of the transverse distribution chambers; wherein, one of the first process holes or one of the second process holes is used as a gas source inlet, and the remaining first process holes and second process holes are provided with sealing elements for sealing.

[0008] In the gas distribution device of the portable gas stove described above, the cross-sectional diameter of the longitudinal distribution chamber gradually decreases from one end to the other.

[0009] In the gas distribution device of the portable gas stove described above, the cross-sectional diameter of each of the transverse distribution chambers gradually decreases from its corresponding second process hole toward the longitudinal distribution chamber.

[0010] As described above, in the gas distribution device of the portable gas stove, a plurality of the lateral distribution sections are arranged one-to-one along both sides of the longitudinal distribution section.

[0011] As described above, the gas distribution device for the portable gas stove has a preheating distribution section on one side of the longitudinal distribution section. The preheating distribution section has a preheating chamber inside. The preheating distribution section has a first preheating hole, and one of the transverse distribution sections has a second preheating hole. The first preheating hole and the second preheating hole are either kept closed or opened to form a preheating outlet interface communicating with the longitudinal distribution cavity and a preheating return interface communicating with the transverse distribution cavity, respectively.

[0012] The portable gas stove gas distribution device described above also includes multiple mounting parts on the device body for fixing to the stove.

[0013] A portable gas stove, comprising a gas distribution device as described above for a portable gas stove.

[0014] Compared with the prior art, the present invention has the following advantages: This invention utilizes a standardized device body with multiple redundant, initially closed holes, allowing manufacturers to stock only one type of semi-finished product. In the final stage of production, the required number of holes can be selectively opened according to order needs through a simple drilling process, enabling flexible production of products with different numbers or layouts of furnace heads on the same production line. This changes the rigid traditional production model where a single specification must correspond to a single mold, significantly reducing the high costs of mold development and maintenance, and simplifying warehousing and inventory management. Since there is no need to redesign and develop time-consuming molds for new specifications, manufacturers can respond rapidly to market changes or customer customization needs, gaining a competitive edge in the fierce market and enhancing their brand's core competitiveness. [Attached Image Description] To more clearly illustrate the technical solutions in the embodiments of the utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0015] Figure 1 This is a three-dimensional schematic diagram of the device body when no holes are drilled at the preset positions in Embodiment 1. Figure 1 ; Figure 2 This is a three-dimensional schematic diagram of the device body when no holes are drilled at the preset positions in Embodiment 1. Figure 2 ; Figure 3 This is a three-dimensional schematic diagram of the device body when no holes are drilled at the preset positions in Embodiment 1. Figure 3 ; Figure 4 This is a three-dimensional schematic diagram of the device body when applied to a seven-burner stove in Example 1; Figure 5 for Figure 4 A schematic diagram of the decomposition process; Figure 6 This is a three-dimensional schematic diagram of the device body when applied to a five-burner stove in Example 1; Figure 7 This is a cross-sectional view of the internal structure of Example 1; Figure 8 This is a three-dimensional schematic diagram of a portable gas stove used in a seven-burner stove according to this embodiment; Figure 9 This is a three-dimensional schematic diagram of a portable gas stove used in a five-burner stove according to this embodiment.

Detailed Implementation Methods

[0016] Example 1: This embodiment provides a gas distribution device for a portable gas stove. Its core purpose is to achieve flexible adaptation to different specifications and functional requirements through a redundant and modular design, while optimizing the production process, reducing manufacturing costs, and improving the stability and uniformity of gas distribution.

[0017] Please see the appendix Figures 1 to 9 The portable gas stove gas distribution device of this embodiment first includes an integral device body 1. The device body 1 is the structural foundation and functional carrier of the entire gas distribution device, and integrates various functional parts for gas delivery and distribution. Specifically, the device body 1 includes a longitudinal distribution section 2 as the central trunk, and multiple sets of transverse distribution sections 3 symmetrically arranged on both sides along the length direction of the longitudinal distribution section 2.

[0018] Optionally, in one specific embodiment, three sets of transverse distribution sections 3 extend from each side of the longitudinal distribution section 2, and the three sets of transverse distribution sections 3 on the left and right sides are arranged in a one-to-one correspondence, so that the entire device body 1 forms a stable and balanced king-shaped main structure when viewed from above. This layout not only has high structural strength, but also lays a good physical foundation for the uniform distribution of gas.

[0019] The core innovation of this embodiment, and the key to its flexible adaptation, lies in the innovative design of the air outlet. In its standardized semi-finished state, the device body 1 does not directly have fixed air outlets; instead, it has multiple structured, initially closed, pre-set pre-defined holes 4. The layout of these pre-defined holes 4 is carefully planned: three pre-defined holes 4 are evenly distributed along the length of the longitudinal distribution section 2, while one pre-defined hole 4 is provided on each of the transverse distribution sections 3. Therefore, the main structure of this device body 1 has a total of nine pre-defined holes 4.

[0020] This redundant pre-set hole configuration changes the rigid production model of traditional gas appliances where one mold can only adapt to one specification. In this embodiment, products of different specifications can all use the same semi-finished product of the device body 1. In the final stage of production, only the nine pre-set holes 4 need to be selectively drilled according to specific order requirements or product models to customize gas distribution devices with different numbers of heads. The following uses two typical product configurations as examples for illustration: Configuration scheme 1 is a five-burner stove. When the customer requires a five-burner stove, the following hole opening operation is performed on the device body 1 on the production line: all three preset hole positions 4 on the longitudinal distribution part 2 are opened; at the same time, the preset hole positions 4 on the lateral distribution parts 3 at both sides in the middle position are opened. In this way, a total of five preset hole positions 4 are processed into gas outlet through holes 41, while the remaining four preset hole positions 4 on the lateral distribution parts 3 at both ends remain in their initial closed state. This configuration features concentrated firepower and is suitable for cooking scenarios that require strong central firepower.

[0021] Configuration scheme 2 is a seven-burner stove. When the customer requires a seven-burner stove, another hole opening strategy is adopted: only one preset hole position 4 located right in the middle of the longitudinal distribution part 2 is opened; at the same time, all preset hole positions 4 on all six lateral distribution parts 3 on the left and right sides are opened. In this way, a total of seven preset hole positions 4 are processed into gas outlet through holes 41, while the two preset hole positions 4 at both ends of the longitudinal distribution part 2 remain closed. This configuration provides a wider firepower distribution and is suitable for scenarios that require uniform heating of large-area cookware.

[0022] After completing the selective hole opening, a standard gas nozzle 5 is further installed at each formed gas outlet through hole 41. The gas nozzle 5 is used to eject the subsequently introduced gas at a set flow rate and form, and mix efficiently with air for combustion.

[0023] Through the above method, this embodiment only needs to reserve one standardized semi-finished product, and can flexibly produce products of at least two mainstream specifications through a simple final hole opening process, and can even derive more configuration combinations as needed. This flexible manufacturing solution based on redundant preset hole positions greatly improves the response speed and customization capability of the production line, and significantly reduces the high mold development cost and complex inventory management cost caused by multi-specification products. Through this method, multiple specifications of products can be produced with only one set of molds, which greatly improves production efficiency and reduces inventory and mold costs.

[0024] Of course, the above king-shaped structure is only a relatively preferred example of this embodiment, rather than the only limitation. The core concept of the present application has wide applicability, and can be evolved into a variety of different main structures according to different stove volumes, power requirements and design aesthetics.

[0025] As another alternative embodiment, the device body 1 can also adopt a denser and expanded layout. For example, two sides of the longitudinal distribution part 2 can each be provided with four groups, instead of three groups, of transverse distribution parts 3. In this case, the entire device body 1 will form a more complex comb-tooth structure in a top view. Similarly, on the semi-finished product of this structure, a plurality of preset hole positions 4 that are initially closed are also pre-arranged. For example, three preset hole positions 4 can still be arranged on the longitudinal distribution part 2, and each of the eight transverse distribution parts 3 on both sides is provided with one preset hole position 4, so that the semi-finished product has a total of eleven optional opening points.

[0026] Based on this eleven-hole-position semi-finished product, products with different specifications can also be flexibly configured. For example, a nine-burner cooking appliance can be produced, whose opening strategy is to open one preset hole position 4 located in the middle of the longitudinal distribution part 2; meanwhile, all the preset hole positions 4 on all eight transverse distribution parts 3 on the left and right sides are opened. This forms a powerful combustion matrix with one central fire point and eight surrounding fire points, which is suitable for large-size cookers used in professional kitchens or outdoor teams. The other preset hole positions remain closed.

[0027] It can be seen therefrom that, whether it is a king-shaped topology or any other reasonable topology, the present application can realize low-cost and high-efficiency flexible production by pre-arranging a plurality of redundant hole positions on a standardized semi-finished device body and then performing selective hole opening according to requirements.

[0028] Further, as an alternative embodiment, in order to realize effective conveying and distribution of fuel gas, a longitudinal distribution cavity is arranged inside the longitudinal distribution part 2, and at the same time, a transverse distribution cavity communicated with the longitudinal distribution cavity is arranged inside each of the plurality of transverse distribution parts 3. The longitudinal distribution cavity and the transverse distribution cavity together form a closed channel network for fuel gas to flow inside the device body 1.

[0029] In order to realize the above-mentioned highly integrated integrated channel network, the embodiment has made careful considerations on the matching of structural selection and manufacturing process of the device body 1. In the art, there are multiple alternative process routes for manufacturing a fuel gas distribution device with a complex inner cavity. For example, a conventional method is to mechanically process a solid metal profile such as an aluminum alloy block to cut an outer contour first, and then drill the inner cavity by means of deep hole drilling or the like. Although this method is feasible, it has many working procedures and low efficiency, and the processing precision of deep hole drilling is difficult to control, resulting in high overall manufacturing cost.

[0030] For the die-casting process, integrally forming complex internal channels poses great challenges. For example, for some gas distributors that require annular or non-linear flow paths, due to their curved inner cavity structure, the core for forming the inner cavity cannot be pulled out linearly during mold opening, which makes it impossible to adopt the conventional die-casting core-pulling process. In this case, a more complex and expensive alternative has to be adopted, that is, a pre-formed metal pipe is placed and fixed in the die-casting mold in advance, and then the molten metal is poured. This process of pre-embedded pipe fittings not only greatly increases the design difficulty and production cost of the mold, but also the bonding interface between the pre-embedded pipe and the die-casting body becomes a potential stress concentration point or a micro-leakage risk point.

[0031] The present application is precisely intended to fundamentally solve this process problem, and opens up a completely new path for efficient and low-cost manufacturing through a unique structure. The ingenuity of this embodiment lies in that the device body 1 is designed to have an orthogonal or parallel layout composed of a linear longitudinal distribution portion 2 and a linear transverse distribution portion, for example, a king-shaped layout as described above. This structural regularity allows the complex internal channel network to be decomposed into a plurality of linear distribution cavities. It is this linear cavity layout that enables the adoption of the die-casting core-pulling process.

[0032] Specifically, the device body 1 is preferably integrally formed at one time through a die-casting process. The longitudinal distribution cavity 21 and the transverse distribution cavity 31 inside the device body are all synchronously formed by precisely arranging and driving a plurality of linear cores in a die-casting mold through the die-casting core-pulling step. During mold opening, all cores for forming the inner cavity can be smoothly pulled out linearly along their respective axial directions without interference.

[0033] Through the perfect coordination of this structure and the process, this embodiment completely avoids the low efficiency and high cost of traditional machining methods, and fundamentally solves the industry problem that pre-embedded pipe fitting die-casting must be adopted due to non-linear structure. It can efficiently manufacture a truly integrated, weld-free, splicing-free and embedded part-free gas distribution device with extremely low cost, and achieves a breakthrough in production efficiency and cost control on the premise of ensuring extremely high structural strength, pressure resistance and absolute sealing performance of the product.

[0034] Furthermore, to achieve the aforementioned die-casting core-pulling process, it is inevitable to form corresponding process openings at both ends or the end of the core. Specifically, at least one end of the longitudinal distribution cavity 21 will form a first process hole 211, and each of the transverse distribution cavities 31 will form a second process hole 311 at its end away from the longitudinal distribution cavity 21. These process holes need to be properly treated after product molding. In this embodiment, according to the needs of the gas circuit design, one of the first process holes 211 or one of the second process holes 311 is selected as the inlet for connecting a gas cylinder or valve. All other first process holes 211 and second process holes 311 are reliably sealed by a dedicated sealing element 6. The sealing element 6 can be in various forms such as a threaded plug, a press-fit plug, or a welded sealing plate, and its material can be a metal or polymer material resistant to gas corrosion to ensure that no leakage occurs during long-term use.

[0035] Furthermore, after completing the basic structural manufacturing and sealing of the device body 1, this embodiment focuses on the refined control of internal gas flow to solve the technical problem of uneven flames commonly found in multi-burner stoves. In traditional multi-outlet manifold systems, as gas flows into the main pipeline from the inlet and is continuously diverted to various branches along the way, the total flow rate in the main pipeline gradually decreases. According to fluid dynamics principles, if the cross-sectional diameter of the main pipeline remains constant, the decrease in flow velocity will lead to a corresponding change in static pressure. This often results in a significant gas pressure difference between the combustion point near the gas source inlet and the combustion point far from the gas source inlet, ultimately manifesting as uneven flame height and inconsistent thermal efficiency, severely impacting the user experience. To solve the above problems, this embodiment optimizes the internal geometry of the distribution chamber. As an optional implementation, the cross-sectional diameter of the longitudinal distribution chamber 21 is designed to gradually decrease from one end (which can be the end near the gas source inlet) to the other end. This conical internal cavity structure aims to scientifically compensate for the flow rate attenuation caused by the continuous diversion of gas along the way. As the total flow rate decreases, the cross-sectional area of ​​the channel also decreases accordingly. This forces the remaining gas flow to remain within a relatively constant velocity range, effectively suppressing pressure fluctuations within the cavity and ensuring that the pressure distribution from the first to the last branch point is as uniform as possible. The direct benefit of this design is that each connected transverse distribution chamber 31 can obtain a stable and consistent inlet pressure, thereby ensuring that each gas nozzle 5 can eject gas with a uniform flow rate, ultimately forming a highly consistent and stable flame.

[0036] It's worth noting that this conical inner cavity, designed to optimize fluid performance, also greatly facilitates the manufacturing process. As mentioned earlier, the inner cavity is formed through a die-casting core-pulling process. A purely cylindrical inner cavity results in significant friction between the core and the inner wall during demolding, easily leading to scratches, damage, or even jamming, thus reducing production yield. In contrast, the conical inner cavity in this embodiment has a core with a slight draft angle. This minute taper allows the core to quickly detach from the casting's inner wall during the initial extraction stage, greatly reducing demolding resistance and making the core-pulling process extremely smooth. This not only significantly reduces the scrap rate caused by demolding difficulties but also effectively extends the service life of precision molds, making it a model design that balances high performance and low cost.

[0037] Furthermore, as a supplement to the above-described fluid optimization scheme, the cross-sectional diameter of each of the transverse distribution cavities 31 can also be configured to gradually decrease from its corresponding second process hole 311 toward the longitudinal distribution cavity 21. This configuration provides the necessary draft angle for each core that needs to be extracted laterally to form the transverse distribution cavity 31, ensuring that all cores can be extracted smoothly and without damage in complex die-casting molds.

[0038] Furthermore, as an optional structural layout, multiple transverse distribution sections 3 are arranged in a one-to-one correspondence along both sides of the longitudinal distribution section 2. This symmetrical layout not only makes the overall structure of the device more stable and aesthetically pleasing, but also facilitates a more balanced gas distribution and heat field distribution, while also simplifying mold design and manufacturing.

[0039] Furthermore, as an optional implementation, to enable the device to adapt to the special working conditions where liquefied gas cylinders need to be inverted in high-altitude or cold environments, the device body 1 is also redundantly equipped with an interface module for connecting to an external preheating pipeline. The fuel used in conventional portable gas stoves, such as butane, propane, or mixtures thereof, is stored in a high-pressure liquefied state within the gas cylinder. When the stove burns, it consumes the gaseous fuel in the upper part of the cylinder. The evaporation of liquid fuel into a gaseous state within the cylinder is an endothermic process, requiring the absorption of heat from the external environment. Under normal temperature conditions, this process proceeds smoothly. However, in the low-pressure environment of high-altitude areas or in cold environments, the heat provided by the outside world is drastically reduced, and the evaporation rate of the liquid fuel decreases significantly, resulting in insufficient pressure within the gas cylinder, a weak flame, or even extinguishing, preventing the stove from functioning properly. In such cases, experienced outdoor users or professionals typically use an inverted gas cylinder to force fuel supply. After inversion, the flowing out is a stable pressure of liquid fuel. However, this leads to an even more serious problem: conventional burners are designed for burning gaseous fuels. If liquid fuel is injected directly, it will immediately cause a violent and uncontrolled "deflagration" or "flame" phenomenon, which is not only extremely dangerous but also has very low combustion efficiency. Therefore, the liquid fuel must be forcibly vaporized before it reaches the gas nozzle 5.

[0040] Specifically, in this embodiment, a preheating distribution section 7 is also provided on one side of the longitudinal distribution section 2, which has a preheating cavity 71 inside. A first preheating hole is pre-installed on the preheating distribution section 7, and a second preheating hole is pre-installed on one of the transverse distribution sections 3. The first and second preheating holes are designed in the same way as the preset holes 4 mentioned above. They can have two final structural states when they leave the factory: either they remain in their initial closed state; or they are opened according to customer order requirements to form a preheating outlet interface 72 communicating with the longitudinal distribution cavity 21 and a preheating return interface 32 communicating with the transverse distribution cavity 31, respectively. When the preheating function is required, the user or manufacturer can connect a preheating pipe 9, usually made of a metal with excellent thermal conductivity such as copper or stainless steel, through these two reserved interfaces. The routing of the preheating pipe 9 will pass above or at the edge of the furnace flame. At this point, the entire workflow becomes: the liquid fuel in the inverted gas cylinder enters the longitudinal distribution chamber 21 from the gas source inlet, and then flows out from the preheating outlet 72 into the external preheating pipe 9; the liquid fuel is heated by the flame of the burner itself in the preheating pipe, and quickly and completely evaporates into high-temperature gaseous fuel; finally, the high-temperature gaseous fuel re-enters the transverse distribution chamber 31 of the device body through the preheating return outlet 32, and is then sprayed out through the gas nozzle 5 for stable and efficient combustion.

[0041] Through this redundant interface design, this embodiment enables the same gas distribution device to cover both the standard market and the professional market with stringent weather resistance requirements without changing the main mold, greatly improving the product's applicability and market competitiveness.

[0042] Furthermore, to facilitate the secure installation of the entire gas distribution device onto the furnace body or frame of the portable gas stove, the device body 1 is integrally formed with multiple assembly parts 8. The specific structure of the assembly part 8 can be determined according to the design of the matching stove, for example, it can be a mounting boss with threaded holes, a groove or through hole for snap-fit, or a flange structure, etc.

[0043] Example 2: This embodiment provides a portable gas stove, which includes the gas distribution device described in Embodiment 1 above. Due to the use of the aforementioned gas distribution device, the portable gas stove possesses all its advantages, such as high production flexibility, low cost, safety and reliability, uniform gas distribution, and functional expandability.

[0044] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A gas distribution device for a portable gas stove, comprising a device body (1), characterized in that, The device body (1) includes at least one longitudinal distribution section (2), and multiple transverse distribution sections (3) communicating with it are provided on both sides along the length direction of the at least one longitudinal distribution section (2). Multiple preset holes (4) are provided on the longitudinal distribution section (2) and the transverse distribution section (3). In this process, at least one of the preset holes (4) is opened to form an air outlet (41), and at least one of the preset holes (4) remains closed; a gas nozzle (5) is installed at the air outlet (41).

2. The gas distribution device for the portable gas stove according to claim 1, characterized in that, The longitudinal distribution section (2) is provided with a longitudinal distribution cavity (21), and the multiple transverse distribution sections (3) are each provided with a transverse distribution cavity (31) that communicates with the longitudinal distribution cavity (21).

3. The gas distribution device for the portable gas stove according to claim 2, characterized in that, The device body (1) is integrally formed by die casting, and the longitudinal distribution cavity (21) and the transverse distribution cavity (31) are formed by die casting core pulling process.

4. The gas distribution device for the portable gas stove according to claim 3, characterized in that, At least one end of the longitudinal distribution cavity (21) is formed with a first process hole (211), and the end of each of the transverse distribution cavities (31) is formed with a second process hole (311); wherein, one of the first process holes (211) or one of the second process holes (311) is used as a gas source inlet, and the remaining first process holes (211) and second process holes (311) are provided with sealing elements (6) for sealing.

5. The gas distribution device for the portable gas stove according to claim 4, characterized in that, The cross-sectional diameter of the longitudinal distribution cavity (21) gradually decreases from one end to the other.

6. The gas distribution device for the portable gas stove according to claim 4, characterized in that, The cross-sectional diameter of each of the transverse distribution cavities (31) gradually decreases from its corresponding second process hole (311) toward the longitudinal distribution cavity (21).

7. The gas distribution device for the portable gas stove according to claim 1, characterized in that, Multiple transverse distribution sections (3) are arranged one-to-one on both sides of the longitudinal distribution section (2).

8. The gas distribution device for the portable gas stove according to claim 2, characterized in that, A preheating distribution section (7) is provided on one side of the longitudinal distribution section (2). The preheating distribution section (7) is provided with a preheating cavity (71). A first preheating hole is preset on the preheating distribution section (7), and a second preheating hole is preset on one of the transverse distribution sections (3). The first preheating hole and the second preheating hole are either kept closed or opened to form a preheating outlet (72) communicating with the longitudinal distribution cavity (21) and a preheating return port (32) communicating with the transverse distribution cavity (31), respectively.

9. The gas distribution device for the portable gas stove according to claim 1, characterized in that, The device body (1) is also provided with a number of assembly parts (8) for fixing to the stove.

10. A portable gas stove, characterized in that, Includes a gas distribution device for a portable gas stove as described in any one of claims 1-9.

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