An outdoor gas stove with convenient adjustable heat output

Abstract

This utility model discloses a conveniently adjustable outdoor gas stove, including a stove body and a flame control switch for controlling the flame intensity. The outer furnace body of the stove body has a first gas supply chamber, and the upper part of the first gas supply chamber is connected to a first burner arranged in a ring array to form an outer ring fire. The inner furnace body of the stove body has a second gas supply chamber and a third gas supply chamber, and a second burner and a third burner are respectively connected to the second and third gas supply chambers. The second and third burners are respectively provided with combustion holes, and the combustion holes of the second burner are distributed around the combustion holes of the third burner to form an inner ring fire and a central fire on the second and third burners respectively. Each gas supply chamber is connected to a gas source, and the flame control switch controls each burner to start combustion in a set sequence and with a set flame intensity. In this way, a more uniform and denser heat field distribution pattern and flexible flame control are achieved, greatly improving the daily user experience.

Description

Technical Field

[0001] This utility model relates to the field of gas stove technology, and in particular to an outdoor gas stove head with convenient adjustable firepower. Background Technology

[0002] The gas stove is a national standard energy-saving periodic operation stove, achieving high energy efficiency through its ultra-energy-saving structural design. Among them, the burner structure, as the core component of the gas stove, directly affects combustion efficiency, durability, and safety.

[0003] For example, Chinese utility model patent CN218599788U, entitled "A Novel Gas Burner Head," includes a base with a first fixing groove at its top. A burner head bottom ring is fixedly connected to the inner side of the first fixing groove. An inner gas groove is formed in the center of the top of the base, with an inner gas pipe fixedly connected to its inner side. An inner burner head is fixedly connected to the top of the inner gas pipe. Several fixing blocks are fixedly connected around the top of the burner head bottom ring, with a burner head top ring fixedly connected to the top of each fixing block. Several outer burner heads are fixedly connected to the top of the burner head top ring. By employing an inner and outer gas pipe and burner head structure to improve the mixing of gas and air, and combining a pulse igniter and a cover to protect the ignition needle, a trapezoidal flame ring is formed to improve thermal efficiency. This solves the problems of incomplete combustion in existing gas burners and the ignition needle being easily splashed with oil or water or adhering to impurities, leading to ignition failure or flameout.

[0004] However, the existing technology still has the following defects: the burner of the existing gas stove is usually only equipped with two burners, inner and outer, and the design of the inner and outer burner distribution structure is relatively conventional. When in use, the firepower of each burner is usually too concentrated or too dispersed, which affects the daily user experience of the gas stove. In addition, the start-up and shutdown of the inner and outer burners and the adjustment of the firepower are also relatively simple, and the flexibility of use is insufficient. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an outdoor gas stove head with convenient firepower adjustment.

[0006] The purpose of this utility model is achieved by the following technical solution: an outdoor gas stove head with convenient firepower adjustment, including a stove head body and a fire control switch for controlling the firepower of the stove head, wherein the stove head body has an inner furnace body and an outer furnace body disposed on the periphery of the inner furnace body;

[0007] The outer furnace body is provided with a first gas supply chamber, and the upper part of the first gas supply chamber is connected to a first burner arranged in a ring array to form an outer ring fire; the inner furnace body has a second gas supply chamber and a third gas supply chamber located in the center of the second gas supply chamber, and a second burner and a third burner are respectively connected to the second gas supply chamber and the third gas supply chamber; the second burner and the third burner are respectively provided with combustion holes, and the combustion holes of the second burner are distributed around the combustion holes of the third burner to form an inner ring fire and a central fire on the second burner and the third burner respectively;

[0008] The first gas supply chamber, the second gas supply chamber, and the third gas supply chamber are connected to the gas source respectively, and the first burner, the second burner, and the third burner are controlled by the flame control switch to start combustion in a set order and with a set flame intensity.

[0009] Furthermore, the first, second, and third gas supply chambers are respectively provided with a first, second, and third air inlet pipe at their respective air inlet ends, and are connected to the ignition switch and gas source through the corresponding air inlet pipes. Control valves are provided on the first, second, and third air inlet pipes, and the ignition switch is electrically connected to and controls the opening and closing of the control valves, thereby controlling the start-up and shutdown and the firepower of each burner.

[0010] Furthermore, any two of the first, second, and third air intake pipes are merged into a first confluence pipe. The first confluence pipe and the remaining air intake pipe are merged into a second confluence pipe. A first control valve and a second control valve are respectively installed on the remaining air intake pipe and the first confluence pipe. The second confluence pipe is connected to the gas source. The ignition switch is electrically connected and controls the first and second control valves to open sequentially, thereby controlling the corresponding burners and forming the corresponding fire mode in sequence.

[0011] Alternatively, the first, second, and third air intake pipes are each equipped with a third control valve, and each air intake pipe is independently connected to the air source. The ignition switch is electrically connected to and independently controls the opening and closing of the third control valves on each air intake pipe, thereby controlling each burner to form an outer ring fire, an inner ring fire, a central fire, or full firepower.

[0012] Alternatively, the intake ends of the first, second, and third intake pipes are combined into a third confluence pipe. A fourth control valve is installed on the third confluence pipe. The third confluence pipe is connected to the gas source. The ignition switch is electrically connected to and controls the opening and closing of the fourth control valve, thereby synchronously controlling the ignition of each burner to form full firepower.

[0013] Furthermore, the first burner head is provided with a plurality of first combustion holes, which are connected to the first gas supply chamber, and the plurality of first combustion holes are arranged in a circular array on the top of each first burner head.

[0014] Furthermore, the second burner head is provided with a plurality of second combustion holes arranged in a rectangular and / or annular array, and the third burner head is provided with a third combustion hole. Both the second combustion hole and the third combustion hole are configured as vertically arranged cylindrical holes and are connected to the second gas supply chamber and the third gas supply chamber respectively. The diameter of the second combustion hole is smaller than the diameter of the third combustion hole.

[0015] Furthermore, the first gas delivery chamber is configured as an annular cavity surrounding the inner furnace body, and the second and third gas delivery chambers are configured as cylindrical cavities and arranged in the annular middle of the first gas delivery chamber.

[0016] Furthermore, the bottoms of the first and second air delivery chambers are fixedly connected by several fan-shaped base plates.

[0017] Furthermore, each of the first, second, and third air supply chambers has an air intake chamber at its entrance, and the air intake chamber is connected to the air intake pipe through the air intake chamber. The inner diameter of the air intake chamber gradually narrows from the end connected to the air intake pipe to the end connected to the air supply chamber.

[0018] Furthermore, the outer furnace body is divided into an upper furnace body and a lower furnace body, and the upper furnace body and the lower furnace body cover each other to form the first gas supply chamber; multiple burner seats are evenly distributed on the surface of the upper furnace body, and the first burner is integrally installed on the burner seat.

[0019] Furthermore, the outer circumference of the upper furnace body and the lower furnace body are provided with connecting lugs.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] (1) This embodiment of the application optimizes the layout of the three-tiered furnace body (the first gas supply chamber of the outer furnace body and the second and third gas supply chambers of the inner furnace body) and the three sets of burners (the first, second, and third burners). It transforms the traditional "inner-outer" dual-fire structure into a "outer ring-inner ring-center" triple-fire structure and combustion hole arrangement, overcoming the limitations of the traditional inner and outer ring fires. Through the combination of the center fire, inner ring fire, and outer ring fire, a variety of more uniform, denser, or more concentrated heat field distribution patterns can be generated. In addition, by combining the multi-level flame control switch to coordinate the sequence and size of the three sets of burners, the "point-line-surface" multi-dimensional fine adjustment of the firepower is realized, fundamentally changing the heat distribution of the flame at the bottom of the cookware. It provides adjustment flexibility and level selection far exceeding that of traditional gas stoves. Users can choose the most suitable firepower combination mode according to different cooking needs such as frying, stir-frying, boiling, and stewing, greatly improving the daily user experience.

[0022] (2) In this embodiment, the central flame requiring high heat and the outer ring flame providing peripheral heating are bound together and linked for control, ensuring high thermal efficiency, reducing the number of burner groups that users need to operate independently, making the control interface (knob) simpler and more intuitive, reducing the user's learning cost, and ensuring the required firepower intensity. The inner ring flame, suitable for low heat, is separated, achieving true micro-fire control, solving the problem of traditional gas stoves where low heat is easily extinguished or the firepower is still too high, greatly improving the flexibility of use and cooking effect. The gas circuit design adopts a strategy combining "group linkage" and "independent control," and through a clear gear design, provides multi-level precise firepower output from low to high heat. Attached Figure Description

[0023] Figure 1 This is a schematic diagram showing the connection between the outdoor gas stove head, the ignition switch, and the gas storage tank pipeline in a preferred embodiment of this utility model.

[0024] Figure 2 for Figure 1 A sectional view cut along the AA direction;

[0025] Figure 3 for Figure 1 A sectional view cut along the BB direction;

[0026] Figure 4 for Figure 1 A sectional view cut along the CC direction;

[0027] Figure 5 This is a three-dimensional schematic diagram of the outdoor gas stove head in a preferred embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the back of the outdoor gas stove head in a preferred embodiment of the present invention;

[0029] Figure 7 This is an exploded view of the outer furnace body structure of the outdoor gas stove head in a preferred embodiment of the present invention.

[0030] In the picture:

[0031] 10. Outer furnace body; 101. Upper furnace body; 1011. Burner head seat; 102. Lower furnace body; 103. Connecting lug; 104. First gas supply chamber; 105. First burner; 1051. First combustion hole; 106. First air inlet pipe; 107. Fan-shaped bottom plate;

[0032] 20. Inner furnace body; 201. Second gas supply chamber; 202. Second burner; 2021. Second combustion hole; 203. Second air inlet pipe; 204. Third gas supply chamber; 205. Third burner; 2051. Third combustion hole; 206. Third air inlet pipe; 21. First merging pipe; 22. Second merging pipe;

[0033] 30. Ignition switch;

[0034] 40. Air intake chamber;

[0035] 50. Gas cylinder. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0037] Example 1

[0038] like Figure 1-7 As shown, an outdoor gas stove with easily adjustable heat output is applicable not only outdoors but also for daily indoor use. It is suitable for various cooking methods such as frying, stir-frying, boiling, and stewing, greatly improving the daily user experience.

[0039] The outdoor gas burner includes a burner body and a flame control switch 30 for controlling the burner's flame intensity. The burner body mainly comprises an inner furnace body 20 and an outer furnace body 10 coaxially arranged around the outer periphery of the inner furnace body 20. The outer furnace body 10 has an overall annular structure, and an annular first gas supply chamber 104 is integrally formed inside the annular outer furnace body 10. Multiple (e.g., 6-9 burners) independent first burners 105 are connected in an annular array on the upper part of the first gas supply chamber 104, and the multiple annular array of first burners 105 are equidistant from each other. These first burners 105 together constitute the outer ring flame.

[0040] The inner furnace body 20 has a more precise structure. It is generally cylindrical, with a second gas supply chamber 201 inside. A separate third gas supply chamber 204 is coaxially arranged at the center of the second gas supply chamber 201. A second burner 202 is connected to the upper part of the second gas supply chamber 201, and a third burner 205 is connected to the upper part of the third gas supply chamber 204. The combustion holes on the second burner 202 are arranged in a ring or rectangular array around the combustion holes of the third burner 205, thus forming several inner rings of fire (second burners 202) outside the central fire (third burner 205).

[0041] In terms of gas connection, the first gas delivery chamber 104, the second gas delivery chamber 201 and the third gas delivery chamber 204 are respectively connected to the gas source (such as gas cylinder 50) through independent air inlet pipes (first air inlet pipe 106, second air inlet pipe 203 and third air inlet pipe 206).

[0042] In terms of gas circuit control, the ignition switch 30 is electrically connected to the control valve installed in the passage between the gas source and each air intake pipe. Moreover, the ignition switch 30 can be selected according to the user's knob position. The ignition switch 30 is electrically connected to the control valve. By controlling the opening and closing of the control valve, the corresponding air intake pipe is connected or disconnected, thereby controlling the three sets of burners, namely the first burner 105, the second burner 202, and the third burner 205, to start and close in a preset order, and finely adjusting their gas supply (firepower).

[0043] The ignition switch 30 used in this embodiment can be a rotary switch with a locking function, and the control valve used can be a three-position five-way directional valve or a solenoid valve.

[0044] Therefore, this embodiment of the application optimizes the layout of the triple furnace body (the first gas supply chamber 104 of the outer furnace body 10 and the second and third gas supply chambers 204 of the inner furnace body 20) and the three sets of burners (first, second, and third burners 205), transforming the traditional "inner-outer" dual-fire structure into an "outer ring-inner ring-center" triple-fire structure and combustion hole arrangement, overcoming the limitations of the traditional inner and outer ring fires. Through the combination of the center fire, inner ring fire, and outer ring fire, a variety of more uniform, denser, or more concentrated heat field distribution patterns can be generated. Furthermore, by combining the multi-level flame control switch 30 with the sequential and size coordination control of the three sets of burners, multi-dimensional fine adjustment of the firepower is achieved, fundamentally changing the heat distribution of the flame at the bottom of the cookware. This provides adjustment flexibility and level selection far exceeding that of traditional gas stoves, allowing users to select the most suitable firepower combination mode according to different cooking needs such as frying, stir-frying, boiling, and stewing, greatly improving the daily user experience.

[0045] The embodiments of this application optimize the gas path control as follows: a first air inlet pipe 106, a second air inlet pipe 203, and a third air inlet pipe 206 are provided. The first air supply chamber 104 is connected to the ignition switch 30 and the gas source through the first air inlet pipe 106. The second air supply chamber 201 is connected to the ignition switch 30 and the gas source through the second air inlet pipe 203. The third air supply chamber 204 is connected to the ignition switch 30 and the gas source through the third air inlet pipe 206.

[0046] In this system, the first intake pipe 106 and the third intake pipe 206 merge into a first manifold 21 before reaching the ignition switch 30. A second control valve is installed on the first manifold 21, which is connected to the gas source. The ignition switch 30 is electrically connected to and controls the opening and closing of the second control valve. Therefore, when the ignition switch 30 controls the second control valve to open, it simultaneously connects the first intake pipe 106 and the third intake pipe 206 with gas, thereby supplying gas to the first burner 105 and the third burner 205. This means that the outer ring flame (first burner 105) and the center flame (third burner 205) are started and stopped synchronously, and the amount of gas (flame intensity) is adjusted, thus achieving the linkage control of the first burner 105 and the third burner 205.

[0047] The second burner 202 has independent control and a speed setting design. The second gas supply chamber 201 is connected to an independent second air inlet pipe 203. Before reaching the ignition switch 30, the second air inlet pipe 203 merges with the first manifold pipe 21 to form a second manifold pipe 22. The second manifold pipe 22 is connected to the gas source. A first control valve is installed on the second air inlet pipe 203. The ignition switch 30 is electrically connected to and controls the opening and closing of the first control valve. Therefore, when the ignition switch 30 controls the first control valve to open, gas is supplied to the second air inlet pipe 203, thereby supplying gas to the second burner 202.

[0048] The ignition switch 30 has at least three distinct positions (e.g., off position, first position, second position, and third position). Furthermore, the number of positions of the ignition switch 30 in this embodiment can be further increased, for example, by adding a position between the "first position" and the "second position" that only turns on the center flame (third burner 205) for extremely concentrated heating.

[0049] More specific gear control is as follows:

[0050] In the first setting (low heat), the ignition switch 30 only controls the first control valve to open, opening the air passage to the second air intake pipe 203. At this time, only the second burner 202 (inner ring flame) is ignited, providing a low heat suitable for slow cooking or keeping warm.

[0051] In the second setting (medium heat), the ignition switch 30 continues to control the second control valve to open, simultaneously opening the second air intake pipe 203 and the linked air passages to the first air intake pipe 106 and the third air intake pipe 206. At this time, all burners (first, second, and third burners 205) are ignited, providing medium to high heat suitable for regular stir-frying and boiling.

[0052] The third setting (high heat setting) is based on the second setting. The ignition switch 30 controls the first and second control valves to open to their maximum positions, the opening of each gas path rotates to its maximum, and the gas flow reaches its peak value. For example, it provides full-power combustion suitable for stir-frying and quickly boiling large amounts of water.

[0053] Therefore, by linking and controlling the central flame (requiring intense heat) and the outer ring flame (providing peripheral heating), high thermal efficiency is ensured, the number of burner groups requiring independent operation is reduced, the control interface (knobs) becomes simpler and more intuitive, lowering the learning curve for users, while maintaining the required heat intensity. Meanwhile, the inner ring flame, suitable for low heat, is separated, achieving true micro-flame control and solving the pain points of traditional gas stoves where low flames are easily extinguished or the heat remains too high, greatly improving flexibility and cooking results. The gas circuit design employs a strategy combining "group linkage" and "independent control," and through a clearly defined power level design, provides multi-level precise heat output from low to high heat.

[0054] In addition to the above, the combination of the first air intake pipe 106, the second air intake pipe 203, and the third air intake pipe 206 in the embodiments of this application can also be such that the first air intake pipe 106 and the second air intake pipe 203 are combined, and the third air intake pipe 206 is set independently; or, the second air intake pipe 203 and the third air intake pipe 206 are combined, and the first air intake pipe 106 is set independently. The specific combination method can be freely combined according to the user's needs for using the firepower mode.

[0055] Further description of the structure of the first burner 105: Each first burner 105 has multiple (e.g., 6-10) first combustion holes 1051 machined on its top. These first combustion holes 1051 are arranged in a ring array on its top, and each first combustion hole 1051 is connected to the first gas supply chamber 104, ensuring that each first burner 105 can spray a uniform ring of small flames upwards, which together form a continuous and uniform outer ring of firepower.

[0056] Further description of the structure of the second and third burners 205: The top of the second burner 202 has a large number of smaller-diameter second combustion holes 2021 arranged in a rectangular and / or annular array, which are connected to the second gas delivery chamber 201. The top of the third burner 205 has one or a few larger-diameter third combustion holes 2051, which are connected to the third gas delivery chamber 204.

[0057] Furthermore, both the second combustion hole 2021 and the third combustion hole 2051 are preferably vertically arranged cylindrical holes. This cylindrical hole design allows the second burner 202 (inner ring flame) to emit a dense yet gentle flame cluster, suitable for uniform heating, while the third burner 205 (center flame) can emit a robust and concentrated flame column, resulting in intense heat and concentrated heat flow. The small-diameter second combustion hole 2021 helps maintain flame stability at low flow rates, while the large-diameter third combustion hole 2051 ensures efficient gas ejection at high flow rates. Of course, in practical applications, the shape of the combustion holes is not limited to cylindrical holes; they can also be oblique holes, trapezoidal holes, etc., to change the flame direction.

[0058] Regarding the layout and connection of the gas supply chambers, the first gas supply chamber 104 is an annular cavity surrounding the inner furnace body 20. The second and third gas supply chambers 201 and 204 are both cylindrical cavities, coaxially arranged in the middle of the annular first gas supply chamber 104. To enhance structural stability, the bottom of the first gas supply chamber 104 (i.e., the outer furnace body 10) and the bottom of the second gas supply chamber 201 (i.e., the inner furnace body 20) are fixedly connected by welding or integral casting of several (e.g., 2-4) fan-shaped base plates 107. This effectively prevents deformation or misalignment of the inner and outer furnace bodies 10 due to thermal expansion and contraction or external impact, thereby improving the overall structural strength of the gas burner head.

[0059] In this embodiment of the application, when each air delivery chamber is connected to the air inlet pipe, an air inlet chamber 40 is also provided at the inlet of the air delivery chamber; for example, a first air inlet chamber 40, a second air inlet chamber 40, and a third air inlet chamber 40 are respectively provided at the inlet of the first air delivery chamber 104, the second air delivery chamber 201, and the third air delivery chamber 204.

[0060] These intake chambers 40 serve as transitional structures between the intake pipe and the main gas delivery chamber. The inner diameter (or flow cross-sectional area) of each intake chamber 40 is gradually changing, specifically narrowing from the end connected to the intake pipe towards the end connected to the main gas delivery chamber. For example, the inner diameter structure of this intake chamber 40 utilizes the Venturi effect or the principle of continuity in fluid dynamics. The gradually narrowing channel increases the gas flow velocity, converting pressure energy into kinetic energy. This helps the gas to diffuse more quickly when entering the main gas delivery chamber, promoting pressure balance among the burners, preventing gas backflow to a certain extent, and stabilizing the airflow.

[0061] Therefore, by optimizing the inner diameter of each air intake chamber 40, the uniformity of gas distribution is improved, ensuring that the gas can be efficiently and evenly distributed to every corner of the annular or large-area gas delivery chamber. This ensures that the outlet pressure of all first burners 105, second burners 202, and third burners 205 is basically the same, and the flame height and firepower are uniform, avoiding the problem of some burners having too small a flame due to insufficient gas supply.

[0062] Regarding the split design of the outer furnace body 10, the outer furnace body 10 in this embodiment adopts a split design, including an upper furnace body 101 and a lower furnace body 102, which are connected by threads or snaps to form a sealed first gas supply chamber 104. The surface of the upper furnace body 101 is integrally die-cast or machined with a raised cylindrical burner head seat 1011. The first burner head 105 is fixedly installed on the burner head seat 1011 by threaded connection or interference fit, ensuring the firmness and airtightness of the connection. The burner head seat 1011 in this embodiment can also be designed as detachable for easy replacement and maintenance.

[0063] Therefore, the split furnace body design (upper and lower furnace bodies 102) greatly reduces the difficulty and cost of mold-making and manufacturing of complex internal cavities. The split and modular design makes production and assembly more convenient, facilitates large-scale production, and also makes it easier for users to clean, maintain or replace specific burners later.

[0064] To further facilitate assembly and hanging, several (e.g., three) connecting lugs 103 with through holes are integrally provided on the outer periphery of the upper furnace body 101 after it is closed with the lower furnace body 102. These lugs are used to connect to the furnace frame or support legs via screws. The design of the fan-shaped base plate 107 and the connecting lugs 103 significantly improves the mechanical strength and deformation resistance of the furnace head body, making it more suitable for use and transportation in harsh outdoor environments and extending the product's lifespan.

[0065] The overall working process of the outdoor gas stove head provided in this embodiment is as follows:

[0066] 1. Connect the gas source. Connect the ignition switch 30 and the gas inlet of each control valve to the outdoor gas cylinder 50 through hoses.

[0067] 2. To prepare for ignition, rotate the ignition switch knob counterclockwise by 30 degrees until you hear the ignition needle click or an open flame is ready.

[0068] 3. Low Flame Mode (Level 1): Turn the ignition switch 30 to the first position to open the first control valve. At this time, the switch only opens the second air intake pipe 203 leading to the second gas delivery chamber 201. Gas flows through the second air intake pipe 203, enters the second gas delivery chamber 201, and is finally ejected from the numerous small-diameter second combustion holes 2021 of the second burner 202. Once ignited, a stable inner ring of low flame is obtained, suitable for slow cooking and heat preservation.

[0069] 4. Medium heat mode (second setting): Continue turning the knob to the second setting to open the second control valve. At this time, the ignition switch 30, while keeping the second air intake pipe 203 open, also opens the linkage gas path to the first air supply chamber 104 and the third air supply chamber 204. Gas simultaneously enters the first air supply chamber 104 and the third air supply chamber 204 through the first air intake pipe 106 and the third air intake pipe 206. Gas is ejected from the combustion holes of all the first burners 105 and the third burners 205 and ignited. At this time, the outer ring flame, inner ring flame, and center flame are all working, providing comprehensive medium-high heat, suitable for stir-frying and boiling.

[0070] 5. High-power mode (three levels): Continue turning the knob to the third level (maximum level), and adjust the first and second control valves to their maximum positions. All gas passages are at their maximum opening, gas flow is at its maximum, and all burners operate at maximum power, providing full heat, suitable for stir-frying or rapid heating.

[0071] 6. Turn off the gas by turning the knob clockwise back to the "OFF" position. All gas lines will be cut off and the flame will be extinguished.

[0072] Therefore, through the above working process, the embodiments of this application achieve multi-level and fine adjustment from a small flame to an extremely intense flame, and the flame distribution is scientific and uniform, improving the user's daily use experience and making the operation flexible and convenient.

[0073] Example 2

[0074] The difference between this embodiment and Embodiment 1 is that the combination design of the first air intake pipe 106, the second air intake pipe 203, and the third air intake pipe 206 is different, while the rest are the same, and the same parts will not be described again.

[0075] Specifically, in this embodiment of the application, each of the first air intake pipe 106, the second air intake pipe 203, and the third air intake pipe 206 is provided with a corresponding third control valve, and the air intake ends of the first air intake pipe 106, the second air intake pipe 203, and the third air intake pipe 206 are independently connected to an air source. An ignition switch is electrically connected to and independently controls the opening and closing of the third control valves provided in each of the first air intake pipe 106, the second air intake pipe 203, and the third air intake pipe 206.

[0076] For example, when the third control valve on the first intake pipe 106 is opened, gas is supplied to the first intake pipe 106, causing the first burner to form an outer ring flame. When the third control valve on the second intake pipe 203 is opened, gas is supplied to the second intake pipe 203, causing the second burner to form an inner ring flame. When the third control valve on the third intake pipe 206 is opened, gas is supplied to the third intake pipe 206, causing the third burner to form a center flame. Simultaneous opening of the third control valves on all intake pipes creates full firepower. Furthermore, the first intake pipe 106, second intake pipe 203, and third intake pipe 206 can be combined in pairs according to user needs, achieving more flexible and convenient firepower combination modes.

[0077] Example 3

[0078] The difference between this embodiment and Embodiment 1 is that the combination design of the first air intake pipe 106, the second air intake pipe 203, and the third air intake pipe 206 is different, while the rest are the same, and the same parts will not be described again.

[0079] Specifically, in this embodiment, the first intake pipe 106, the second intake pipe 203, and the third intake pipe 206 converge into a third confluence pipe before reaching the ignition switch 30. A fourth control valve is installed on this third confluence pipe. The third confluence pipe is connected to the gas source, and the ignition switch is electrically connected and controls the opening and closing of the fourth control valve. Therefore, when the ignition switch controls the fourth control valve to open, the ignition of each burner can be simultaneously controlled to form a full-power combustion mode.

[0080] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An outdoor gas burner for easy adjustment of the fire power, characterized in that It includes a burner head body and a flame control switch for controlling the firepower of the burner head. The burner head body has an inner furnace body and an outer furnace body disposed on the outer periphery of the inner furnace body. The outer furnace body is provided with a first gas supply chamber, and the upper part of the first gas supply chamber is connected to a first burner arranged in a ring array to form an outer ring fire; the inner furnace body has a second gas supply chamber and a third gas supply chamber located in the center of the second gas supply chamber, and a second burner and a third burner are respectively connected to the second gas supply chamber and the third gas supply chamber; the second burner and the third burner are respectively provided with combustion holes, and the combustion holes of the second burner are distributed around the combustion holes of the third burner to form an inner ring fire and a central fire on the second burner and the third burner respectively; The first gas supply chamber, the second gas supply chamber, and the third gas supply chamber are connected to the gas source respectively, and the first burner, the second burner, and the third burner are controlled by the flame control switch to start combustion in a set order and with a set flame intensity.

2. The outdoor gas stove head with convenient adjustable heat output as described in claim 1, characterized in that, The first, second, and third gas supply chambers are respectively provided with a first, second, and third air inlet pipe at their respective air inlet ends, and are connected to the ignition switch and gas source through the corresponding air inlet pipes. The first, second, and third air inlet pipes are provided with control valves, and the ignition switch is electrically connected to and controls the opening and closing of the control valves, thereby controlling the start and stop of each burner and the fire intensity.

3. The outdoor gas stove head with convenient adjustable heat output as described in claim 2, characterized in that, Any two of the first, second, and third air intake pipes are merged into a first confluence pipe. The first confluence pipe and the remaining air intake pipe are merged into a second confluence pipe. A first control valve and a second control valve are respectively installed on the remaining air intake pipe and the first confluence pipe. The second confluence pipe is connected to the gas source. The ignition switch is electrically connected and controls the first and second control valves to open sequentially, thereby controlling the corresponding burners and forming the corresponding fire mode in sequence. Alternatively, the first, second, and third air intake pipes are each equipped with a third control valve, and each air intake pipe is independently connected to the air source. The ignition switch is electrically connected to and independently controls the opening and closing of the third control valves on each air intake pipe, thereby controlling each burner to form an outer ring fire, an inner ring fire, a central fire, or full firepower. Alternatively, the intake ends of the first, second, and third intake pipes are combined into a third confluence pipe. A fourth control valve is installed on the third confluence pipe. The third confluence pipe is connected to the gas source. The ignition switch is electrically connected to and controls the opening and closing of the fourth control valve, thereby synchronously controlling the ignition of each burner to form full firepower.

4. The outdoor gas stove head with convenient adjustable heat output as described in claim 1, characterized in that, The first burner head is provided with a plurality of first combustion holes, which are connected to the first gas supply chamber. The plurality of first combustion holes are arranged in a circular array on the top of each first burner head.

5. The outdoor gas stove head with convenient adjustable heat output as described in claim 1, characterized in that, The second burner head has a plurality of second combustion holes arranged in a rectangular and / or circular array, and the third burner head is provided with a third combustion hole. The second combustion hole and the third combustion hole are both set as vertically arranged cylindrical holes and are connected to the second gas supply chamber and the third gas supply chamber respectively. The diameter of the second combustion hole is smaller than the diameter of the third combustion hole.

6. A portable outdoor gas fire pit as claimed in any one of claims 1 to 5 wherein, The first gas delivery chamber is configured as an annular cavity surrounding the inner furnace body, and the second and third gas delivery chambers are configured as cylindrical cavities and arranged in the annular middle of the first gas delivery chamber.

7. The outdoor gas burner of claim 6, wherein the control mechanism comprises a lever pivotally mounted to the housing and a spring. The bottoms of the first and second air delivery chambers are fixedly connected by several fan-shaped base plates.

8. A portable outdoor gas fire pit of any one of claims 1-5, wherein, The first air supply chamber, the second air supply chamber, and the third air supply chamber are respectively provided with an air inlet chamber, and are connected to the air inlet pipe through the air inlet chamber. The inner diameter of the air inlet chamber gradually narrows from the end connected to the air inlet pipe to the end connected to the air supply chamber.

9. A portable outdoor gas fire pit for adjusting the heat output as claimed in any one of claims 1 to 5 wherein, The outer furnace body is divided into an upper furnace body and a lower furnace body. The upper furnace body and the lower furnace body cover each other to form the first gas supply chamber. Multiple burner seats are evenly distributed on the surface of the upper furnace body. The first burner is integrally installed on the burner seat.

10. The outdoor gas burner of claim 9, wherein the burner is configured to provide a flame having a height of 1.5 inches to 2.5 inches. The outer circumference of the upper furnace body and the lower furnace body are provided with connecting lugs.

Images