Volute of range hood

Abstract

A range hood volute comprises a front shell body and a rear shell body, and the butt joint faces of the front shell body and the rear shell body are buckled with each other and jointly define the volute body used for guiding exhaust air. Each of the front shell and the rear shell comprises a coaming and an end plate, and the coaming and the end plate are connected through an arc transition surface; the surrounding plate is of an arc-shaped structure which is high inside and low outside relative to the central position of the volute. The volute has the advantages that the coaming is designed to be of the arc-shaped structure with the high middle and the two low sides, so that an internal flow channel of the volute better conforms to the airflow movement law. By means of the design, the turbulent flow phenomenon of airflow in the volute is reduced, airflow resistance is effectively reduced, and the smoke exhaust efficiency is improved. Meanwhile, the structure can optimize airflow distribution, so that the smoke exhaust process is more stable and efficient, and the overall performance of the range hood is improved.

Description

Technical Field

[0001] This utility model relates to a range hood accessory, specifically a range hood volute. Background Technology

[0002] Range hoods are common kitchen appliances, primarily used to remove cooking fumes and odors. One of their core components is the volute structure. The volute's role is to guide airflow and optimize exhaust efficiency; its design and manufacturing quality directly affect the range hood's performance.

[0003] In existing technology, the volute of a range hood is typically welded together from a surrounding panel and end plates at both ends. While this design and manufacturing method meets usage requirements to some extent, it still has the following significant drawbacks:

[0004] 1. Numerous Components and Complex Assembly: Traditional volute structures require assembly using multiple parts, typically including a separate side panel and two end plates. These three components require multiple alignment, splicing, and welding fixation processes after manufacturing. The large number of components not only increases production costs but also significantly enhances the complexity of the assembly process, reducing production efficiency.

[0005] 2. High welding workload and poor reliability: The splicing of the side panels and end plates typically requires a significant amount of welding work. Strict process control is necessary to ensure airtightness and strength at the joint. However, since the side panels and end plates are usually made of thin metal materials, they are prone to thermal deformation during welding, leading to unstable weld quality at the joint and affecting the overall service life and performance of the volute.

[0006] 3. Thin material, prone to deformation: The casing's surrounding plates and end plates are generally stamped from thin metal sheets. These thin sheets may deform under high airflow pressure or during use, affecting the casing's structural stability and airflow guidance performance. This deformation not only reduces the range hood's efficiency but may also cause significant operating noise, impacting the user experience.

[0007] 4. Increased noise during operation: Due to the low rigidity of the connection between the casing's side plates and end plates, as well as the overall structure, the thin-plate structure is easily affected by airflow vibrations during long-term use, resulting in significant noise. Furthermore, even minor cracks or loosening at the welded joints can also contribute to noise.

[0008] In conclusion, the existing structure and manufacturing process of range hood volutes have many shortcomings, which not only increase production costs and difficulties, but also significantly affect the product's performance and reliability. Therefore, it is necessary to make further improvements to them. Utility Model Content

[0009] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a range hood volute that is simple in structure, easy to use, reduces the number of parts, simplifies the assembly process, significantly improves the strength and stability of the overall structure, and reduces operating noise.

[0010] The purpose of this utility model is achieved through the following means: a range hood volute, including a front shell and a rear shell, wherein the mating surfaces of the front shell and the rear shell are interlocked and together form a volute for guiding exhaust air.

[0011] Both the front and rear housings include a surrounding plate and an end plate, and the surrounding plate and the end plate are connected by an arc transition surface.

[0012] The surrounding plate is an arc-shaped structure that is higher on the inside and lower on the outside relative to the center of the volute.

[0013] Furthermore, the mating surface of the enclosure is bent outward to form a connecting plate. After the front shell and the rear shell are mated, the connecting plates are fixed together by welding.

[0014] Furthermore, the end plate, surrounding plate, and connecting plate are integrally stamped from metal sheets.

[0015] Furthermore, the end plate has several guide strips extending along the exhaust direction.

[0016] Furthermore, the guide strip is an arc-shaped boss formed by stamping the end plate body material inward.

[0017] The beneficial effects of this utility model are: 1. Simple structure, low production cost, and improved market competitiveness.

[0018] 2. The volute casing of this utility model features an arc-shaped structure with a higher center and lower sides, making the internal flow channels of the volute casing more in line with airflow patterns. This design reduces airflow turbulence inside the volute casing, effectively lowering airflow resistance and improving smoke extraction efficiency. Simultaneously, this structure optimizes airflow distribution, making the smoke extraction process more stable and efficient, thereby enhancing the overall performance of the range hood.

[0019] 3. This utility model features several guide strips arranged along the exhaust direction on the end plate of the volute. These guide strips, through their reasonable shape and layout, effectively guide the airflow. The presence of these guide strips further optimizes the airflow path inside the volute, reduces airflow collisions and turbulence, minimizes energy loss, and allows the airflow to be quickly exhausted outside the volute. Furthermore, the curved design of the guide strips helps reduce airflow noise, thereby improving user comfort.

[0020] 4. The air guide strip not only guides airflow but also strengthens the overall strength of the end plate. Because the air guide strip is an arc-shaped boss formed by stamping the end plate material, its unique raised structure enhances the rigidity of the end plate, effectively preventing plate deformation caused by airflow pressure or long-term use. Especially under high-intensity operating conditions, the strengthening effect of the air guide strip significantly improves the overall stability and durability of the volute.

[0021] 5. This utility model adopts a one-piece stamping design of metal sheet. The surrounding plate, end plate, and connecting plate are fixed together by a simple welding process, avoiding the complex process of assembling multiple parts required in the prior art. This design not only reduces the number of parts and lowers production costs, but also ensures high-precision matching of each component through the stamping process, further improving the structural strength and durability of the volute. Attached Figure Description

[0022] Figure 1 , 2 This is a diagram showing the final assembly and usage effect of this utility model.

[0023] Figure 3 This is an exploded view of the structure of this utility model.

[0024] Figure 4 This is a cross-sectional view of the structure of this utility model.

[0025] Figure 5 In this utility model Figure 4 Enlarged view of the structure of part A. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings. A range hood volute includes a front housing 1 and a rear housing 2, wherein the mating surfaces of the front housing 1 and the rear housing 2 are interlocked to form a volute for guiding exhaust air.

[0027] Both the front housing 1 and the rear housing 2 include a surrounding plate 21 and an end plate 22, and the surrounding plate 21 and the end plate 22 are connected by an arc transition surface 23.

[0028] The enclosure 21 is an arc-shaped structure that is higher on the inside and lower on the outside relative to the center of the volute.

[0029] In one embodiment: the mating surface of the enclosure 21 is bent outward to form a connecting plate 24. After the front housing 1 and the rear housing 2 are mated, the connecting plate 24 is fixed together by welding.

[0030] In one embodiment, the end plate 22, the surrounding plate 21 and the connecting plate 24 are integrally stamped from metal sheet.

[0031] In one embodiment, the end plate 22 has a plurality of guide strips 25 extending along the exhaust direction.

[0032] In one embodiment: the guide strip 25 is an arc-shaped boss formed by stamping the end plate body material inward.

[0033] Working principle: The present invention relates to a range hood volute, which is formed by fastening a front shell and a rear shell together through mating surfaces. The surrounding plates, end plates and connecting plates of the front and rear shells are reasonably designed and manufactured so that the volute can optimize airflow and improve smoke exhaust efficiency during operation, while ensuring structural strength and stability in use.

[0034] In this invention, the volute casing forms a closed flow channel structure through the docking of the front and rear casings. The surrounding panels adopt an arc-shaped design that is high in the middle and low on both sides, forming a spiral flow channel around the center of the volute casing. When the range hood is running, the high-speed airflow generated by the fan enters the flow channel of the volute casing. Due to the special arc-shaped design of the surrounding panels, the airflow can flow along the inner surface of the volute casing, resulting in a smoother flow line and reducing the collision and turbulence between the airflow and the casing, which is common in traditional flat-panel structures.

[0035] Meanwhile, the curved design of the enclosure panel in this case, which is higher in the middle and lower on both sides, effectively reduces airflow turbulence and backflow, optimizes the exhaust path, and allows the airflow to be discharged quickly and efficiently. This improves smoke extraction efficiency while reducing energy consumption, thus making the range hood more efficient, reducing noise caused by airflow collisions, and improving user comfort.

[0036] Furthermore, in this design, the end plates are located at both ends of the enclosure, serving to seal the flow channel of the volute. Several guide strips are arranged on their surface along the exhaust direction. When high-speed airflow flows inside the volute, the guide strips, through their well-designed arc-shaped protrusions, guide the airflow, allowing it to flow more smoothly along the exhaust direction, further reducing airflow turbulence and energy loss. Simultaneously, the arc-shaped guide strips extending from the end plate surface provide clear guidance for the airflow, effectively reducing airflow adhesion and interference on the end plate surface, thereby improving airflow emission efficiency.

[0037] In addition, the guide strip is formed by inward stamping of the end plate body material. Its raised structure significantly enhances the rigidity of the end plate, which can effectively resist the airflow pressure when the fan is running at high speed and avoid the deformation problem of the end plate due to long-term use.

[0038] Furthermore, the connecting plate in this invention is formed by bending at the joint of the surrounding plates, and the front and rear housings are welded together using the connecting plate. This connecting plate design not only simplifies the assembly process of the housings and avoids the need for additional accessories, but also improves the overall strength of the volute. The welded volute structure is compact and robust, capable of withstanding high-intensity operating conditions, thus enhancing the product's durability and reliability.

[0039] Through the above structural design, the range hood casing of this utility model has the following comprehensive advantages:

[0040] 1. Improved airflow guidance: The guide strips on the volute casing and end plates are designed to optimize the airflow path, reduce turbulence and resistance, and significantly improve smoke extraction efficiency.

[0041] 2. Lower noise: The curved design of the enclosure and the airflow guiding effect of the guide strips significantly reduce the noise generated by airflow impact and turbulence. At the same time, the reinforcing effect of the guide strips reduces noise caused by vibration.

[0042] 3. Higher structural strength: The side panels, end plates, and connecting plates are integrally stamped from metal sheets, which enhances the overall strength of the volute, avoids deformation problems, and extends service life.

[0043] 4. Simplified assembly process: Reduce the number of parts, simplify the assembly process through reasonable connecting plate design, and make the welding process simple and reliable, thereby reducing production costs.

[0044] 5. Improved operating efficiency: By optimizing airflow distribution and exhaust path, the volute operates more smoothly and efficiently, significantly improving the overall performance of the range hood.

[0045] In summary, the range hood volute of this utility model focuses on airflow optimization, structural reinforcement, and manufacturing process improvement in its design. Through reasonable technical means, it solves the problems of numerous parts, large amount of welding, insufficient strength, and high noise in the existing technology, and therefore can be widely promoted and used.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A range hood casing, characterized in that: It includes a front housing (1) and a rear housing (2), the mating surfaces of the front housing (1) and the rear housing (2) are interlocked to form a volute for guiding exhaust air; The front housing (1) and the rear housing (2) both include a surrounding plate (21) and an end plate (22), and the surrounding plate (21) and the end plate (22) are connected by an arc transition surface (23); The enclosure (21) is an arc-shaped structure that is higher inside and lower outside relative to the center of the volute.

2. The range hood volute according to claim 1, characterized in that: The connecting plate (24) is bent outward on the mating surface of the enclosure (21). After the front shell (1) and the rear shell (2) are mated, the connecting plate (24) is fixed together by welding.

3. The range hood casing according to claim 2, characterized in that: The end plate (22), the surrounding plate (21) and the connecting plate (24) are integrally stamped from metal sheets.

4. The range hood volute according to claim 2, characterized in that: The end plate (22) has several guide strips (25) extending along the exhaust direction.

5. The range hood volute according to claim 4, characterized in that: The guide strip (25) is an arc-shaped boss formed by stamping the end plate body material inward.

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