Composite oil filter screen for range hood

Abstract

A combined type oil filter screen for a range hood comprises a groove screen and a hole screen which are buckled up and down, a plurality of kidney-shaped holes are formed in the groove screen, the back faces of the kidney-shaped holes extend upwards along the outlines of the kidney-shaped holes to form upper turnups, and an oil guide groove is formed between every two adjacent upper turnups; further, the cross section of the hole net is in a wave shape, the highest point of the hole net corresponds to the center line of the kidney-shaped hole, the lowest point of the hole net corresponds to the oil guide groove, a plurality of oil filtering holes are formed in the hole net, and grease condensed on the hole net drops into the oil guide groove along the inclined face of the hole net. Compared with the prior art, the oil filter screen has the advantages that the kidney-shaped holes are formed in the groove screen, the back faces of the kidney-shaped holes extend upwards along the outlines of the kidney-shaped holes to form the upper turnups, grease condensed on the hole screen can drop into the oil guide groove along the inclined face of the hole screen, and therefore the grease is effectively prevented from directly dropping from the surface of the oil filter screen, environmental pollution is reduced, and the service life of the oil filter screen is prolonged. And the kitchen is kept clean.

Description

Technical Field

[0001] The utility model relates to a range hood accessory, in particular to a composite oil filter for a range hood. Background Art

[0002] Range hoods are common equipment in modern kitchens. Their main function is to keep the kitchen environment clean by absorbing the fumes generated during cooking. One of the core components of a range hood is the oil filter, which mainly filters and collects grease in the fumes to prevent them from entering the exhaust pipe and the external environment. However, the oil filter in the prior art has some obvious defects in actual use, which results in unsatisfactory working effects of the range hood and causes pollution to the environment.

[0003] In the prior art, conventional oil filters usually use a single-layer or multi-layer metal mesh structure. These oil filters will encounter the following major problems during use: 1. Oil dripping problem: The existing oil filter structure design is relatively simple. After the grease condenses on the oil filter, it is easy to drip directly from the surface of the oil filter. This will not only pollute the inside of the range hood, but may also drip onto the kitchen countertop and the ground, causing further environmental pollution and increasing the difficulty of cleaning.

[0004] 2. Insufficient grease collection: As traditional oil filters lack effective grease collection and diversion design, condensed grease often stays on the oil filter, and some grease fails to flow into the oil tank in time, causing oil to accumulate on the surface of the oil filter, affecting the smoke extraction effect of the range hood. In addition, the accumulated oil will increase the difficulty of cleaning and shorten the service life of the oil filter.

[0005] 3. Poor filtering effect: The filtration aperture and layout design of the traditional oil filter are unreasonable, and it cannot effectively block and collect the fine grease particles in the oil smoke. This not only affects the overall filtering effect of the range hood, but also allows some grease to enter the exhaust pipe through the oil filter. Long-term accumulation may cause pipe blockage and fire hazards. Therefore, it is necessary to make further improvements. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a composite oil filter for range hoods which has a simple structure, is easy to use, can effectively improve the filtering and collection effect of grease, prevent oil stains from dripping directly, and reduce environmental pollution.

[0007] The utility model aims to achieve the following purpose: a composite oil filter for a range hood, comprising a slot net and a hole net buckled up and down, the slot net is provided with a plurality of waist-shaped holes, the back of the waist-shaped hole is provided with an upper flange extending upward along the contour thereof, and an oil guide groove is formed between two adjacent upper flanges;

[0008] Furthermore: the cross-section of the hole mesh is arranged in a wave shape, the highest point of which corresponds to the center line of the waist-shaped hole, and the lowest point of which corresponds to the oil guide groove. A plurality of oil filter holes are opened on the hole mesh, and the grease condensed on the hole mesh drips into the oil guide groove along the inclined surface of the hole mesh.

[0009] Furthermore, the slot net has an outer frame bent upwards around it, and inner frames bent downwards on the left and right sides of the hole net. The hole net is installed into the outer frame of the slot net by using its inner frame to be connected with it as a whole.

[0010] Furthermore, the waist-shaped holes are arranged in a vertical distribution, and are formed by punching the slot mesh body material.

[0011] Furthermore: the upper flange is formed by stamping the slot mesh body material upwards.

[0012] Furthermore: the oil filter holes are circular holes evenly distributed on the hole net.

[0013] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0014] 2. The present invention opens a plurality of waist-shaped holes on the groove net, and extends upward along the contour of the back of the waist-shaped holes to form an upper flange, so that the grease condensed on the hole net can drip into the oil guide groove along the inclined surface of the hole net, thereby effectively preventing the grease from dripping directly from the surface of the oil filter net, reducing environmental pollution, and keeping the kitchen clean.

[0015] 3. The design of the composite oil filter allows condensed grease to flow smoothly into the oil guide groove. The wave-shaped structure of the mesh and the location of the oil filter holes allow the grease to quickly collect into the oil guide groove along the slope, ensuring efficient grease collection and reducing the accumulation of oil stains inside and outside the range hood.

[0016] 4. The cross section of the mesh in the present invention is wavy, which can increase the retention time of oil smoke on the oil filter mesh and enhance the condensation effect of oil. At the same time, the oil filter holes on the mesh are evenly distributed, which can effectively block and filter the oil particles in the oil smoke, improve the filtering effect of the range hood, and ensure that the exhausted air is cleaner.

[0017] 5. The four sides of the slot net are bent upward to form an outer frame, and the left and right sides of the hole net are bent downward to form an inner frame. The hole net is fixedly installed in the outer frame of the slot net through its inner frame. The two are connected as one, with a stable structure and easy installation. This design not only increases the service life of the oil filter net, but also facilitates disassembly and cleaning.

[0018] 6. The waist-shaped hole design allows the main material of the slot net to form an upper flange and an oil guide groove structure through a stamping process. While providing ventilation, it not only increases the strength and rigidity of the oil filter net, but also improves its ability to resist deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a rendering of the utility model and the range hood assembly.

[0020] Figure 2 It is a schematic diagram of the front structure of the utility model.

[0021] Figure 3 For the utility model Figure 2 A-section structure enlarged view.

[0022] Figure 4 It is a schematic diagram of the reverse structure of the utility model.

[0023] Figure 5 For the utility model Figure 4 Enlarged view of the structure of part B.

[0024] Figure 6 This is a structural exploded view of the utility model.

[0025] Figure 7 , 8 It is a partial structural sectional view of the utility model. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below with reference to the accompanying drawings. A composite oil filter for a range hood, comprising a slot net 1 and a hole net 2 that are buckled up and down, the slot net 1 is provided with a plurality of waist-shaped holes 3, the back of the waist-shaped holes 3 is provided with an upper flange 4 extending upward along the contour thereof, and an oil guide groove 5 is formed between two adjacent upper flanges 4;

[0027] The cross-section of the mesh 2 is wavy, with its highest point corresponding to the center line of the waist-shaped hole 3 and its lowest point corresponding to the oil guide groove 5. A plurality of oil filter holes 6 are provided on the mesh 2, and the grease condensed on the mesh 2 drips into the oil guide groove 5 along the inclined surface of the mesh 2.

[0028] In one embodiment, the slot net 1 has an outer frame 7 bent upward on all sides, and the mesh 2 has inner frames 8 bent downward on both sides. The mesh 2 is installed into the outer frame 7 of the slot net 1 by using its inner frame 8 to be connected to it as a whole.

[0029] In one of the embodiments: the waist-shaped holes 3 are vertically distributed and are formed by punching the main body material of the slot net 1.

[0030] In one embodiment, the upper flange 4 is formed by punching upwards from the main material of the slot net 1 .

[0031] In one of the embodiments, the oil filter holes 6 are circular holes evenly distributed on the hole mesh 2.

[0032] Working principle: When the range hood is working, the oil smoke enters the interior of the oil filter through the suction system. Since the oil smoke carries a large amount of grease particles, these particles will condense and accumulate on the surface of the oil filter.

[0033] The oil smoke first contacts the slot net and flows toward the mesh 2 through the waist-shaped holes on the slot net. The cross section of the mesh is designed in a wave shape. This wave-shaped structure causes the oil smoke to generate eddy currents and blockages on the mesh, increasing the residence time of the oil smoke on the mesh, which is conducive to the condensation of grease particles. The oil filter holes 6 evenly distributed on the mesh further block larger grease particles, allowing the grease to condense on the surface of the mesh.

[0034] The grease condensed on the mesh 2 drips down along the inclined surface of the mesh under the action of gravity. The highest point of the mesh corresponds to the center line of the waist-shaped hole 3, and the lowest point corresponds to the oil guide groove 5. This structural design ensures that the grease can flow smoothly from the mesh to the oil guide groove. The upper flange 4 formed in the oil guide groove effectively guides the flow of grease to prevent the grease from splashing or dripping again during the flow process.

[0035] The upper flange 4 is formed by extending from the back of the waist-shaped hole 3 on the slot net 1, and an oil guide groove 5 is formed between two adjacent upper flanges. When grease drips from the hole net, the grease will flow into the oil guide groove. The design of the oil guide groove not only effectively collects condensed grease, but also prevents grease from dripping directly into the range hood or the external environment, thereby keeping the range hood clean and preventing grease from polluting the kitchen environment.

[0036] The four sides of the slot net 1 are bent upward to form an outer frame 7, and the left and right sides of the hole net 2 are bent downward to form an inner frame 8. The hole net is fixedly installed in the outer frame of the slot net through its inner frame, and the two are connected as a whole. This design enhances the overall rigidity of the oil filter net and prevents deformation during long-term use. In addition, this structure also makes the installation and removal of the oil filter net more convenient, and is easy to clean and maintain.

[0037] Compared with the traditional technology: the upper flange and oil guide groove design of the present invention effectively collects and guides grease, prevents grease from dripping from the surface of the oil filter, avoids pollution of the kitchen environment, and keeps the inside of the range hood clean. In addition, the wavy hole mesh structure increases the contact area for grease condensation, and the evenly distributed oil filter holes effectively block grease particles, allowing the grease to quickly condense and flow into the oil guide groove, significantly improving the grease collection efficiency. The wavy hole mesh and evenly distributed oil filter hole design not only increase the retention time of oil smoke on the oil filter, but also effectively filter fine grease particles to ensure that the discharged air is cleaner.

[0038] In summary, the composite oil filter for range hoods provided by the present invention realizes efficient filtration and collection of grease through scientific and reasonable structural design, prevents oil stains from dripping and polluting the environment, and significantly improves the use effect and service life of the range hood, so it can be widely promoted and used.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A composite oil filter for a range hood, characterized in that: It comprises a slot net (1) and a hole net (2) which are buckled up and down. The slot net (1) is provided with a plurality of waist-shaped holes (3). The back of the waist-shaped holes (3) is provided with an upper flange (4) extending upward along the contour thereof. An oil guide groove (5) is formed between two adjacent upper flanges (4). The cross-section of the mesh (2) is arranged in a wave shape, the highest point of which corresponds to the center line of the waist-shaped hole (3), and the lowest point of which corresponds to the oil guide groove (5). A plurality of oil filter holes (6) are provided on the mesh (2), and the grease condensed on the mesh (2) drips into the oil guide groove (5) along the inclined surface of the mesh (2).

2. The composite oil filter for a range hood according to claim 1, characterized in that: The slot net (1) has outer frames (7) bent upwards on all sides, and the hole net (2) has inner frames (8) bent downwards on both sides. The hole net (2) is installed into the outer frame (7) of the slot net (1) by using its inner frame (8) to be connected to it as a whole.

3. The composite oil filter for a range hood according to claim 1, characterized in that: The waist-shaped holes (3) are arranged in a vertical distribution, and the waist-shaped holes (3) are formed by punching the main body material of the slot net (1).

4. A composite oil filter for a range hood according to claim 1 or 3, characterized in that: The upper flange (4) is formed by punching the main body material of the slot net (1) upwards.

5. The composite oil filter for a range hood according to claim 1, characterized in that: The oil filter holes (6) are circular holes evenly distributed on the mesh (2).

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