Gas flow splitting device

Abstract

The utility model discloses a gas shunt device for gas stove head. The device includes a main casing, which is provided with a first gas outlet cylinder, a second gas outlet cylinder and a third gas outlet cylinder coaxially sleeved and sequentially increasing in height at the top. Three independent air inlet cavities are arranged in the main casing, which sequentially decrease in volume and are communicated with the corresponding gas outlet cylinders through independent flow channels. The first air inlet cavity is of a ladder type structure, realizing multi-directional gas supply; the second air inlet cavity is located below the first air inlet cavity, and the flow channel extends horizontally; the flow channel of the third air inlet cavity extends upward after passing through the bottom of the first two cavities. The interfaces of the air inlet cavities are arranged in a split surface manner, and a pipeline mounting structure is arranged beside the flow channel of the third air inlet cavity. The utility model realizes independent and accurate control of the flow and pressure of each ring flame gas, has good flame stability, is compact and stable in structure, and is convenient to install and maintain.

Description

Technical Field

[0001] This utility model relates to the field of gas combustion equipment technology, and in particular to a gas diversion device for a gas burner head. Background Technology

[0002] Multi-ring gas burners are widely used because they can provide tiered heat output. The core performance of such burners lies in their distribution device's ability to stably and independently distribute gas to each ring flame. Several multi-ring burner designs exist in the prior art, such as the "gas stove burner" disclosed in Chinese utility model patent CN208504388U, which uses independent center flame and outer ring flame injectors, and improves mixing and combustion performance through optimization of the mixing chamber structure (such as the top surface tilt angle).

[0003] However, such existing structures still face fundamental challenges in pursuing higher performance. First, although the gas sources for the central flame and outer ring flame are separated at the inlet, the internal mixing chamber and outlet chamber are still closely connected in physical space, failing to achieve complete physical isolation of the gas path. This means that when adjusting the flame intensity of one ring, changes in the gas flow field and pressure will interfere with the flame stability of the other ring, making precise and independent control difficult to achieve, especially under low-load flame stabilization conditions. Second, existing designs lack effective solutions to the thermal deformation problem of multi-layered outlet ring structures under long-term high-temperature operating conditions, resulting in insufficient structural rigidity and affecting long-term reliability and safety. In addition, for devices requiring complex internal flow channel layouts, the secure installation of external pipelines is often neglected.

[0004] Therefore, there is an urgent need in this field for a gas diversion device that can fundamentally achieve complete independence and non-interference among each gas flow path, and has a robust structure and high stability. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a gas diversion device that can achieve independent and precise diversion of gas to multi-layer annular gas outlets, and has the advantages of stable structure and independently controllable flame.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A gas diversion device for a gas burner head, comprising: A main shell; The three coaxially sleeved annular air outlets located on the top of the main housing are, from the outside to the inside, the first air outlet, the second air outlet, and the third air outlet, and their heights increase sequentially. The main housing contains three independent air intake chambers, including a first air intake chamber, a second air intake chamber, and a third air intake chamber, with their volumes decreasing sequentially. The first air intake chamber is connected to the first air outlet cylinder through a first independent flow channel, the second air intake chamber is connected to the second air outlet cylinder through a second independent flow channel, and the third air intake chamber is connected to the third air outlet cylinder through a third independent flow channel.

[0007] Furthermore, the cavity outline of the first air intake chamber is an outwardly expanding stepped structure, and its outlet is simultaneously connected to the front and at least one side of the first air outlet.

[0008] Furthermore, the second air intake chamber is located below the first air intake chamber, and its flow channel extends in a direction perpendicular to the central axis of the main housing and communicates with the bottom outer wall of the second air outlet.

[0009] Furthermore, the flow channel of the third air inlet chamber passes sequentially below the bottom of the first air inlet chamber and below the bottom of the second air inlet chamber, and extends upward to communicate with the bottom end face of the third air outlet.

[0010] Furthermore, the first and second air intake chambers are located on the front side of the main housing, and the third air intake chamber is located on the back side of the main housing.

[0011] Furthermore, an installation structure for fixing the pipeline is provided beside the flow channel of the third air intake chamber. The installation structure includes a pair of parallel mounting posts and a detachable locking member. The locking member is connected to the mounting posts and has a through hole in its middle for the pipeline to pass through.

[0012] Furthermore, the bottom of the main housing is provided with at least two support feet.

[0013] Furthermore, at least one radially extending reinforcing rib is provided between the inner wall of the first air outlet and the outer wall of the second air outlet.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. Independent and precise control: By setting up three independent air intake chambers connected to the corresponding air outlets, independent control of the gas flow and pressure of each ring flame is achieved. Users can precisely adjust the high, medium and low flames as needed, which is energy-saving and efficient.

[0015] 2. Good flame stability: The gas outlet adopts a design with different heights, which makes the inner and outer ring flames staggered in space, reducing mutual interference. At the same time, the multi-directional gas supply design of the first air inlet chamber ensures the uniformity of gas distribution in the outer ring flame, which greatly improves the stability of the flame, especially in the low flame state, it is not easy to go out.

[0016] 3. Compact and robust structure: Through a clever flow channel layout (such as the second intake chamber extending from the bottom of the first intake chamber and the third intake chamber passing through from below the bottom), three independent gas flow paths are efficiently integrated into a single main housing, resulting in a very compact structure. The reinforcing ribs effectively prevent deformation of the exhaust pipe at high temperatures, extending its service life.

[0017] 4. Easy to install and maintain: The air intake interface is designed with multiple sides to avoid pipe congestion and facilitate on-site installation and connection. The dedicated pipe installation structure ensures that the external pipes of the third air intake chamber are securely fixed and prevents loosening due to vibration. Attached Figure Description

[0018] Figure 1 This is a first three-dimensional structural schematic diagram of the gas diversion device of this utility model.

[0019] Figure 2 This is a second three-dimensional structural diagram of the gas diversion device of this utility model.

[0020] Figure 3 This is a top view of the gas diversion device of this utility model.

[0021] Figure 4 yes Figure 3 A sectional view along line AA.

[0022] Figure 5 yes Figure 1 The bottom view of the embodiment shown. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments, and in accordance with the technical features of the claims.

[0024] like Figures 1 to 5 As shown, the gas diversion device in this embodiment includes a main housing 1, preferably integrally cast from high-temperature resistant cast iron or stainless steel to ensure structural strength and sealing. At the top of the main housing 1, three coaxially fitted annular gas outlet components 2 are integrally formed, namely a first gas outlet 21, a second gas outlet 22, and a third gas outlet 23. By designing the height of the three components to increase sequentially, a clear spatial gradient is created in the three layers of flame formed during combustion. This structural design effectively avoids mutual adsorption and interference between flames, significantly improving the independence and stability of each ring of flame, especially reducing the likelihood of flameout in low-fire conditions, and achieving precise flame stratification and stable combustion.

[0025] The main housing 1 contains three completely independent air intake chambers: a first air intake chamber 31, a second air intake chamber 32, and a third air intake chamber 33, whose volumes are designed to decrease sequentially according to the gas supply requirements of each ring. Specifically, the first air intake chamber 31, with the largest volume, supplies the main combustion gas to the first exhaust pipe 21 of the outermost ring; the second air intake chamber 32, with a middle volume, supplies gas to the second exhaust pipe 22 of the middle ring; and the third air intake chamber 33, with the smallest volume, supplies the combustion gas required for the small flame to the third exhaust pipe 23 of the innermost ring. Each air intake chamber is connected to its corresponding exhaust pipe through a completely independent flow channel: the first air intake chamber 31 is connected to the first exhaust pipe 21 through a first independent flow channel, the second air intake chamber 32 is connected to the second exhaust pipe 22 through a second independent flow channel, and the third air intake chamber 33 is connected to the third exhaust pipe 23 through a third independent flow channel. This volumetric cascading design based on gas supply demand, coupled with one-to-one physically isolated gas paths, ensures independent and precise control of the gas flow and pressure in each ring flame. Users can adjust the high, medium, and low flames separately according to their actual needs, achieving energy-efficient and high-performance operation. Simultaneously, the compact flow channel layout highly integrates three independent gas flow paths within a single main casing, demonstrating both structural rationality and efficient space utilization.

[0026] See Figure 1 and Figure 4 The first air inlet chamber 31 has an outwardly expanding stepped structure. This structure ensures that its outlet is not in a single direction, but can simultaneously communicate with the front annular gap of the first air outlet 21 and at least one of its sides (such as the right side). This multi-directional air supply design ensures that the gas can enter the first air outlet 21 uniformly from multiple angles, greatly guaranteeing the uniformity and stability of the outer ring flame.

[0027] The layout of the second air intake chamber 32 has ingenious space utilization characteristics. For example... Figure 1 and Figure 3 As shown, its main body is located below the first air intake chamber 31. Its flow channel enters from the side wall of the main housing 1 and extends horizontally towards the center along a direction perpendicular to the central axis of the main housing 1. This flow channel is tightly embedded in the bottom structural material of the first air intake chamber 31 and finally connects accurately to the bottom outer wall of the second air outlet 22, realizing the three-dimensional application of space.

[0028] The flow path of the third air intake chamber 33 is the most complex, demonstrating a high level of integrated design. For example... Figure 2 and Figure 5As shown, the flow channel is introduced from the rear interface of the main housing 1, first passing directly below the bottom of the first air intake chamber 31, and then continuing forward to pass directly below the bottom of the second air intake chamber 32, completing a unique low-level crossing path. After that, the flow channel extends vertically upward, passing through the internal space of the second air outlet 22, and finally reaching the highest third air outlet 23, and connecting with the central area of ​​its bottom end face.

[0029] Regarding the layout of external interfaces, this embodiment has also been optimized. For example... Figure 1 and Figure 2 As shown, the air intake interfaces of the first air intake chamber 31 and the second air intake chamber 32 are centrally arranged, both located on the front of the main housing 1, facilitating centralized piping wiring during installation. The air intake interface of the third air intake chamber 33, however, is independently located on the back of the main housing 1. This faceted layout effectively avoids congestion caused by all piping being squeezed onto the same side, greatly simplifying installation and routine maintenance.

[0030] To ensure the stability of the external connecting pipes of the third air intake chamber 33, a pipe installation structure 34 is specially installed next to its flow channel. See also Figure 2 and Figure 5 The structure consists of a pair of parallel and fixed mounting posts 341 and a detachable locking member 342 connected to them by bolts. The locking member 342 has a through hole 342a machined in the middle. After the external pipeline passes through this hole, tightening the bolts will firmly hold and fix it through the locking member 342, effectively preventing the pipeline from loosening due to vibration.

[0031] To ensure the stability of the entire device during operation, please refer to... Figure 1 At least two feet 11 are provided at the bottom of the main housing 1. These feet 11 provide reliable support for the entire device and maintain an appropriate distance between it and the stove mounting surface, which is conducive to heat dissipation.

[0032] To enhance the structural rigidity of the exhaust cylinder assembly at high temperatures and prevent thermal deformation, see [reference needed]. Figure 3 and Figure 4 Between the inner wall of the first air outlet 21 and the outer wall of the second air outlet 22, a plurality of radially extending reinforcing ribs 24 are provided. These reinforcing ribs 24, like a bridge, tightly connect the two air outlets together, significantly improving the overall integrity and mechanical strength of the entire air outlet structure.

[0033] Working principle: During use, the three external gas pipelines are connected to the three air inlets on the front and back of the main casing 1, respectively. After the gas enters its independent air inlet chamber, it is precisely delivered to the first, second, and third gas outlets through the aforementioned dedicated flow channels with different structures and independent paths. When the gas is ejected from these annular gas outlets with height differences and ignited, it forms three independently adjustable, layered, and stable annular flames. The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A gas diversion device for a gas burner head, characterized in that, include: A main shell (1); The three coaxially sleeved annular air outlets (2) set on the top of the main housing (1) are, from the outside to the inside, the first air outlet (21), the second air outlet (22) and the third air outlet (23), and the height of the three increases in sequence. The three independent air intake chambers located in the main housing (1) include a first air intake chamber (31), a second air intake chamber (32) and a third air intake chamber (33), and the volumes of the three chambers decrease sequentially. The first air inlet chamber (31) is connected to the first air outlet cylinder (21) through the first independent flow channel, the second air inlet chamber (32) is connected to the second air outlet cylinder (22) through the second independent flow channel, and the third air inlet chamber (33) is connected to the third air outlet cylinder (23) through the third independent flow channel.

2. A gas diversion device according to claim 1, characterized in that, The first air inlet chamber (31) has an outwardly expanding stepped structure, and its outlet is connected to the front and at least one side of the first air outlet (21).

3. A gas diversion device according to claim 1, characterized in that, The second air inlet chamber (32) is located below the first air inlet chamber (31), and its flow channel extends in a direction perpendicular to the central axis of the main housing (1) and communicates with the bottom outer wall of the second air outlet (22).

4. A gas diversion device according to claim 1, characterized in that, The flow channel of the third air inlet chamber (33) passes under the bottom of the first air inlet chamber (31) and under the bottom of the second air inlet chamber (32) in sequence, and extends upward to communicate with the bottom end face of the third air outlet (23).

5. A gas diversion device according to claim 1, characterized in that, The first air intake chamber (31) and the second air intake chamber (32) are located on the front of the main housing (1), and the third air intake chamber (33) is located on the back of the main housing (1).

6. A gas diversion device according to claim 1, characterized in that, The third air intake chamber (33) is provided with an installation structure (34) for fixing the pipeline next to the flow channel. The installation structure (34) includes a pair of parallel mounting posts (341) and a detachable locking member (342). The locking member (342) is connected to the mounting posts (341) and has a through hole (342a) in its middle for the pipeline to pass through.

7. A gas diversion device according to claim 1, characterized in that, The bottom of the main housing (1) is provided with at least two feet (11) for support.

8. A gas diversion device according to claim 1, characterized in that, At least one radially extending reinforcing rib (24) is provided between the inner wall of the first air outlet (21) and the outer wall of the second air outlet (22).

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