Double-layer filter for range hood

Abstract

A double-layer filter for a range hood comprises a first screen plate and a second screen plate, the edge of the first screen plate is folded towards the reverse direction of the first screen plate to form a first frame, and the edge of the second screen plate is folded towards the direction of the first screen plate to form a second frame; the first screen plate and the second screen plate are installed in a buckled and overlapped mode, the second frame is wrapped in the first frame, and the second frame is supported on the inner surface of the first screen plate. A plurality of first oil filtering holes extending towards the direction of the second screen plate are formed in the first screen plate; and a plurality of second oil filtering holes extending towards the direction of the first screen plate are formed in the second screen plate. The beneficial effects of the utility model are that the reinforcing frame is additionally arranged on the first frame, and the reinforcing frame and the first frame are overlapped, so that the rigidity and the structural strength of the frame are effectively enhanced, and the defect that the frame is easy to bend and deform in the prior art is overcome; therefore, the stability of the filter can still be kept in a high-temperature and high-humidity environment.

Description

Technical Field

[0001] This utility model relates to a range hood accessory, specifically a double-layer filter for range hoods. Background Art

[0002] As an essential appliance in modern kitchens, the range hood's core component is its filter. The filter's function is to filter oil and smoke particles generated during cooking through its special structure, preventing grease from entering the internal fan and affecting the range hood's performance and lifespan. In current technology, filters typically consist of a metal mesh panel and a surrounding frame. The metal mesh panel filters oil and smoke particles, while the frame provides support and stability.

[0003] However, in practical use, the filters in the existing technology still have the following shortcomings and deficiencies:

[0004] 1. Existing filter frames are typically made of single-layer metal sheets. Due to insufficient thickness or strength design, the frames are prone to bending and deformation during long-term use, making it impossible to maintain the flatness of the filter. This not only affects the seal between the filter and the range hood body but may also cause installation instability or noise problems.

[0005] 2. To save on material costs, the existing filter frames are not adequately reinforced, especially in high-temperature and high-fume environments. This can easily lead to structural fatigue in the filter frames, resulting in insufficient support. In actual use, deformation of the filter frames may cause the metal mesh to detach from the frame's fixing structure, further reducing the filtration efficiency.

[0006] 3. Existing filter screens typically use a single-layer design and do not optimize the directionality or filtration efficiency of the oil filter holes. The unreasonable placement or lack of an effective distribution strategy for the oil filter holes results in low separation efficiency of oil fume particles, allowing some oil fume particles to easily pass through the filter screen and enter the range hood.

[0007] 4. Some existing technologies simply wrap the filter screen with a frame, lacking further fixing measures. During long-term use, due to deformation of the frame or uneven stress, the filter screen may fall off or shift, seriously affecting the normal service life of the filter. Therefore, it is necessary to make further improvements. Utility Model Content

[0008] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a double-layer filter for range hoods that is simple in structure and easy to use. By adding a reinforcing frame design to the frame, it not only effectively improves the strength and support capacity of the frame, but also realizes the double-layer design of the filter screen, which improves the separation efficiency of oil fume particles and solves the problems of deformation and detachment in existing technologies, thereby further improving the working performance and service life of range hoods.

[0009] The purpose of this utility model is achieved through the following means: a double-layer filter for a range hood, comprising a first mesh plate and a second mesh plate, wherein the edge of the first mesh plate is folded back towards the first mesh plate to form a first frame, and the edge of the second mesh plate is folded back towards the first mesh plate to form a second frame;

[0010] The first mesh plate and the second mesh plate are fastened and overlapped, the second frame is covered inside the first frame, and the second frame is supported on the inner surface of the first mesh plate.

[0011] A reinforcing frame is also bent inward on the first frame, and the reinforcing frame overlaps with the first frame.

[0012] The first screen plate is provided with a plurality of first oil filter holes extending toward the second screen plate; the second screen plate is provided with a plurality of second oil filter holes extending toward the first screen plate.

[0013] Furthermore: the first mesh panel, the first frame and the reinforcing frame are integrally bent from metal sheets.

[0014] Furthermore, both the first and second oil filter holes have a flared opening structure, and the rear end of each oil filter hole extends to form a guide tube.

[0015] Furthermore: the bottom of the first frame is provided with a clearance groove, and the bottom of the second frame extends downward with a locking foot, which passes through the clearance groove and extends out of the locking foot.

[0016] Furthermore, the clip is formed by bending the second frame material.

[0017] Furthermore, the first oil filter hole and the second oil filter hole are misaligned.

[0018] The beneficial effects of this utility model are: 1. Simple structure, low production cost, and improved market competitiveness.

[0019] 2. This utility model effectively enhances the rigidity and structural strength of the frame by adding a reinforcing frame to the first frame and making the reinforcing frame overlap with the first frame. This overcomes the shortcomings of existing technologies where the frame is prone to bending and deformation, thus ensuring that the filter can maintain stability in high-temperature and high-humidity environments. At the same time, the first frame and the reinforcing frame are integrally bent from metal sheets, reducing defects in welding or splicing processes and further improving the overall structural durability.

[0020] 3. By designing a second frame that covers the inside of the first frame and supports the inner surface of the first mesh plate, a more stable double-frame structure is formed, which effectively improves the overall support capacity of the filter screen and avoids the problem of the mesh plate falling off or shifting due to frame deformation.

[0021] 4. This utility model adopts a double-layer design with the first and second mesh plates interlocking and overlapping, and the first and second oil filter holes are staggered, which greatly improves the separation efficiency of oil fume particles. At the same time, both the first and second oil filter holes are funnel-shaped structures, and extend to the rear end to form a guide pipe, further optimizing the oil fume guiding and collection path, and effectively reducing the possibility of oil fumes passing through the mesh plates.

[0022] 5. By designing a clearance groove at the bottom of the first frame, the locking feet of the second frame can pass through the clearance groove and extend to the outside, ensuring that the filter screen is more stable and secure during installation and use, while preventing the locking feet from dislodging and improving the stability of the product. Attached Figure Description

[0023] Figure 1 This is a rendering of the final assembly of this utility model.

[0024] Figure 2 This is an exploded view of the structure of this utility model.

[0025] Figure 3 In this utility model Figure 2 A magnified view of the local structure.

[0026] Figure 4 This is a partial structural cross-sectional view of the present invention.

[0027] Figure 5 This is a schematic diagram of the locking foot structure in this utility model. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings. A double-layer filter for a range hood includes a first mesh plate 1 and a second mesh plate 2. The edge of the first mesh plate 1 is folded back towards the first mesh plate 1 to form a first frame 3, and the edge of the second mesh plate 2 is folded back towards the first mesh plate 1 to form a second frame 4.

[0029] The first mesh plate 1 and the second mesh plate 2 are fastened and overlapped, the second frame 4 is covered inside the first frame 3, and the second frame 4 is supported on the inner surface of the first mesh plate 1.

[0030] A reinforcing frame 5 is also bent inward on the first frame 3, and the reinforcing frame 5 overlaps with the first frame 3.

[0031] The first mesh plate 1 is provided with a plurality of first oil filter holes 6 extending toward the second mesh plate 2; the second mesh plate 2 is provided with a plurality of second oil filter holes 7 extending toward the first mesh plate 1.

[0032] In one embodiment, the first mesh plate 1, the first frame 3, and the reinforcing frame are integrally bent from metal sheets.

[0033] In one embodiment, the first oil filter hole 6 and the second oil filter hole 7 are both flared structures, and the rear end of each oil filter hole extends to form a guide pipe 9.

[0034] In one embodiment, the bottom of the first frame 3 is provided with a clearance groove 8, and the bottom of the second frame 4 extends downward with a locking foot 10, which passes through the clearance groove 8 and extends out of the locking foot 10.

[0035] In one embodiment, the clip 10 is formed by bending the material of the second frame 4.

[0036] In one embodiment, the first oil filter hole 6 and the second oil filter hole 7 are misaligned.

[0037] Working Principle: In this case, the first mesh plate 1 and the second mesh plate 2 are interlocked and overlapped to form a double-layer filtration structure. When oil fume particles enter the range hood, they first come into contact with the first oil filter holes 6 on the first mesh plate 1. These oil filter holes have a funnel-shaped structure, which can effectively guide the oil fume particles into the interior of the mesh plate. After passing through the first oil filter holes, some of the oil fume particles are filtered, while the remaining smaller oil fume particles continue to enter the second mesh plate 2. Because the second oil filter holes 7 are misaligned with the first oil filter holes 6, the oil fume particles cannot directly pass through the two layers of mesh plates, thereby increasing the probability of particle separation and interception. The rear ends of the first oil filter holes 6 and the second oil filter holes 7 respectively extend to form guide tubes 9, which can further guide the direction of the separated oil fume, so that the oil fume can repeatedly collide between the two layers of mesh plates, increasing the contact time and probability between the oil fume and the mesh plates, thereby significantly improving the filtration efficiency of oil fume particles.

[0038] It should be noted that: the edge of the first screen plate 1 is folded over to form the first frame 3, and the first frame 3 is further folded inward to form the reinforcing frame 5. This design significantly improves the overall rigidity of the frame, making it less prone to bending or deformation during use. Additionally, the edge of the second screen plate 2 is folded over to form the second frame 4, which covers the inside of the first frame 3 and supports the inner surface of the first screen plate 1. This double-frame structure not only makes the screen plate more stable but also effectively distributes the stress on the filter during use, preventing deformation of the screen plate or frame due to excessive localized stress.

[0039] The overlapping arrangement of the reinforcing frame 5 and the first frame 3 significantly improves the strength of the frame, solving the problem of easy deformation due to insufficient strength in the existing technology. The double-frame structure also significantly improves the support capacity of the filter, ensuring that the filter remains stable and secure even after prolonged use in high-temperature and high-humidity environments.

[0040] Furthermore, a clearance groove 8 is formed at the bottom of the first frame 3, and the bottom of the second frame 4 extends downward to form a retaining foot 10. During installation, the retaining foot 10 passes through the clearance groove 8 and extends to the outside, further enhancing the installation stability of the filter and the range hood body. The retaining foot 10 is integrally bent from the material of the first frame, maintaining the same material and structure as the first frame, thus preventing loosening or detachment due to external force or long-term use.

[0041] Compared to traditional technologies, in this case, during operation, oil fume particles are guided and separated by the first filter holes 6 when passing through the first mesh plate 1; while the second mesh plate 2 further intercepts any unseparated oil fume particles. Through the support and fixation of the double-framed structure, the two mesh plates maintain efficient collaboration, ensuring precise alignment of the filter holes and stability of the oil fume separation function.

[0042] The double-frame design ensures a tight fit between the filter panels, preventing a decrease in filtration efficiency due to loosening or deformation of the frame. The reinforced frame and support design allow the filter to withstand prolonged, high-intensity use.

[0043] In summary, this utility model, through its double-layer filtration, reinforced frame, and stable installation design, significantly solves the problems of soft frame hinges, insufficient support, and easy deformation during use found in existing technologies. In practical use, this filter not only efficiently separates oil fume particles but also maintains long-term stable performance and extends its service life, making it suitable for the configuration needs of various high-performance range hoods.

[0044] 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 double-layer filter for range hoods, characterized in that: It includes a first mesh plate (1) and a second mesh plate (2). The edge of the first mesh plate (1) is folded back towards the first mesh plate (1) and has a first frame (3). The edge of the second mesh plate (2) is folded back towards the first mesh plate (1) and has a second frame (4). The first mesh plate (1) and the second mesh plate (2) are fastened and overlapped, the second frame (4) is covered inside the first frame (3), and the second frame (4) is supported on the inner surface of the first mesh plate (1); The first border (3) is further bent inward with a reinforcing frame (5), which overlaps with the first border (3). The first mesh plate (1) is provided with a plurality of first oil filter holes (6) extending toward the second mesh plate (2); the second mesh plate (2) is provided with a plurality of second oil filter holes (7) extending toward the first mesh plate (1).

2. The double-layer filter for a range hood according to claim 1, characterized in that: The first mesh plate (1), the first frame (3) and the reinforcing frame are integrally bent from metal sheets.

3. A double-layer filter for a range hood according to claim 1, characterized in that: Both the first oil filter hole (6) and the second oil filter hole (7) have a flared structure, and the rear end of each oil filter hole extends to form a guide tube (9).

4. A double-layer filter for a range hood according to claim 1, characterized in that: The bottom of the first frame (3) is provided with a clearance groove (8), and the bottom of the second frame (4) extends downward with a locking foot (10). The locking foot (10) passes through the clearance groove (8) and extends out of the locking foot (10).

5. A double-layer filter for a range hood according to claim 4, characterized in that: The aforementioned foot (10) is formed by bending the material of the second frame (4).

6. A double-layer filter for a range hood according to claim 1, characterized in that: The first oil filter hole (6) and the second oil filter hole (7) are misaligned.

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