Oil filter screen and extractor hood

Abstract

This utility model relates to the technical field of fume extraction equipment, providing an oil filter and a range hood. The oil filter includes a fixed frame and multiple filter plates. The oil filter provided by this utility model simplifies the structure and reduces manufacturing costs by setting a fixed frame with mounting strips and multiple filter plates, symmetrically arranging each adjacent filter plate on the mounting strip. Furthermore, the spacing between the first cavity openings is smaller than the spacing between the oil mesh openings, causing the effective area of ​​the smoke inlet zone to gradually decrease from the oil mesh opening to the first cavity opening. This increases the flow velocity of the oil fumes at the first cavity opening and increases the negative pressure in the smoke inlet zone, thereby enhancing the adsorption capacity of the oil mesh opening and improving the oil filtration effect. Further enhancing the filtration effect, the effective area of ​​the smoke outlet zone gradually increases. At the smoke outlet, the flow velocity of the oil fumes decreases, preventing the removal of oil droplets adhering to the filter plates and avoiding airflow collisions and turbulence at the smoke outlet, thus reducing noise.

Description

Technical Field

[0001] This utility model relates to the technical field of oil fume extraction equipment, specifically to an oil filter and an oil fume extractor. Background Technology

[0002] A range hood, also known as a kitchen exhaust hood, is a kitchen appliance that purifies the kitchen environment by exhausting cooking fumes from indoors to outdoors. It typically consists of a smoke collection chamber and a casing assembly. Range hoods are generally installed above the kitchen stove and quickly remove harmful fumes generated during combustion and cooking, venting them outdoors. They also condense and collect the fumes, reducing pollution and purifying the air, and provide safety features such as protection against toxic substances and explosions.

[0003] To prevent oil fumes from contaminating the inside of the range hood, avoid frequent cleaning, ensure the performance of the range hood, and extend its service life, an oil filter screen is usually installed on the range hood. The oil filter screen is an important component of the range hood, which plays the role of filtering oil fumes.

[0004] However, among the related oil filter screen technologies, the oil filtration effect is poor, the noise is high, and the structure is complex and the manufacturing cost is too high. Utility Model Content

[0005] In view of the above-mentioned defects in the prior art, the present invention provides an oil filter and a range hood to solve at least one of the above-mentioned technical defects in the prior art, making the structure of the oil filter simpler, the oil filtering effect better, the noise lower, and the manufacturing cost lower.

[0006] A second aspect of this utility model also provides a range hood.

[0007] To achieve the purpose of this utility model, the present utility model provides an oil filter screen, comprising:

[0008] Preferably, the fixed frame is equipped with a mounting strip;

[0009] Multiple oil filter plates are arranged symmetrically at the center of each adjacent oil filter plate on the mounting strip;

[0010] Each of the oil filter plates includes a main blade, an outer blade, and an inner blade, wherein the outer blade and the inner blade are both located on the main blade.

[0011] Each of the adjacent oil filter plates has a smoke inlet area, a cavity area, and a smoke outlet area formed between its main blade, outer blade, and inner blade.

[0012] The cavity region is provided with a first cavity opening and a second cavity opening. The cavity region is connected to the smoke inlet area through the first cavity opening, and the cavity region is connected to the smoke outlet area through the second cavity opening.

[0013] The smoke inlet area is equipped with an oil filter inlet, and the smoke outlet area is equipped with a smoke outlet.

[0014] The spacing between the first cavity openings is less than the spacing between the oil mesh openings, and the spacing between the second cavity openings is less than the spacing between the smoke outlets.

[0015] Preferably, the adjacent oil filter plates include a first oil filter plate and a second oil filter plate arranged symmetrically to each other.

[0016] The first oil filter includes a first main blade, a first outer blade, and a first inner blade, with the first outer blade and the first inner blade respectively located at both ends of the first main blade.

[0017] The second oil filter includes a second main blade, a second outer blade, and a second inner blade, with the second outer blade and the second inner blade respectively located at both ends of the second main blade;

[0018] The first outer blade, the first main blade, the second inner blade, and the second main blade together form the smoke inlet area, and the oil mesh opening is formed between the first outer blade and the second main blade.

[0019] The second outer blade, the second main blade, the first inner blade, and the first main blade together form the smoke outlet area, and the smoke outlet is formed between the second outer blade and the first main blade.

[0020] The first main blade, the first inner blade, the second main blade, and the second inner blade mutually form the cavity region. The first cavity opening is formed between the first main blade and the second inner blade, and the second cavity opening is formed between the second main blade and the first inner blade.

[0021] Preferably, the main blades of each adjacent oil filter are arranged in parallel.

[0022] The spacing between the main blades of each adjacent oil filter is greater than or equal to the spacing between the oil mesh openings.

[0023] Preferably, the outer blade includes a first small outer blade and a second small outer blade, and the inner blade includes a first small inner blade and a second small inner blade.

[0024] The first small outer blade and the second small outer blade are arranged in a V-shape at the first end of the main blade, and the first small inner blade and the second small inner blade are arranged in a V-shape at the second end of the main blade.

[0025] The angle between the first small outer blade and the second small outer blade is greater than or equal to 90°.

[0026] Preferably, the angle between the first inner blade and the second inner blade is greater than or equal to the angle between the first outer blade and the second outer blade.

[0027] Preferably, the angle between the first inner blade and the second inner blade is less than or equal to 120°.

[0028] Preferably, the spacing between the main blades of each adjacent filter element is less than or equal to 6 mm.

[0029] Preferably, the interval between the first cavity opening and the second cavity opening is greater than or equal to 2 mm.

[0030] Preferably, the fixing frame includes a front frame and a rear frame, the mounting strip is disposed at the lower end of the rear frame, and the mounting strip has multiple mounting grooves.

[0031] The upper end of the rear frame is provided with multiple mounting holes, and each oil filter plate passes through each mounting hole and is inserted into each mounting slot.

[0032] The front frame is detachably wrapped around the rear frame.

[0033] The second aspect of this utility model provides a range hood, including the aforementioned oil filter and range hood body.

[0034] The oil filter screen is located on the main body of the range hood.

[0035] The beneficial effects of this utility model are as follows: The oil filter screen provided by this utility model, by setting a fixed frame with mounting strips and multiple oil filter plates, symmetrically arranges each adjacent oil filter plate on the mounting strip, making the structure of the oil filter screen simpler. During manufacturing, each oil filter plate only needs to be produced with the same specifications, reducing manufacturing costs. Each oil filter plate includes a main blade, an outer blade, and an inner blade. A smoke inlet area, a cavity area, and a smoke outlet area are formed between the main blade, outer blade, and inner blade of each adjacent oil filter plate. The cavity area is provided with a first cavity opening and a second cavity opening. The cavity area is connected to the smoke inlet area through the first cavity opening and the cavity area is connected to the smoke outlet area through the second cavity opening. The smoke inlet area is provided with an oil screen opening, and the smoke outlet area is provided with a smoke outlet.

[0036] Furthermore, the spacing between the first cavity openings is smaller than that between the oil mesh openings, causing the effective area of ​​the smoke inlet zone to gradually decrease from the oil mesh opening to the first cavity opening. This increases the flow velocity of the oil fumes at the first cavity opening and increases the negative pressure in the smoke inlet zone, thereby enhancing the oil mesh's adsorption capacity for oil fumes and improving the oil filtration effect of the filter. The spacing between the second cavity openings is smaller than that between the smoke outlet openings, causing the effective area of ​​the smoke outlet zone to gradually increase from the second cavity opening to the smoke outlet. This causes a sharp increase in the flow velocity of the oil fumes at the second cavity opening, and the oil droplets in the fumes collide with the filter plate under inertia, being filtered again, further improving the oil filtration effect. Moreover, the effective area of ​​the smoke outlet zone gradually increases, and the flow velocity of the oil fumes decreases at the smoke outlet, preventing the removal of oil droplets attached to the filter plate and avoiding airflow collisions at the smoke outlet that could cause turbulence, thus reducing noise.

[0037] The range hood provided by this utility model, by including the aforementioned oil filter, inevitably possesses all the advantages of that filter. Specifically, the effective area of ​​the smoke exhaust zone gradually increases from the second cavity opening to the smoke outlet. The flow velocity of the fumes increases sharply as they pass through the second cavity opening, and the oil droplets in the fumes collide with the filter plate under inertia, being filtered again, further improving the filtration effect. Moreover, the gradually increasing effective area of ​​the smoke exhaust zone reduces the flow velocity of the fumes at the smoke outlet, preventing the removal of oil droplets adhering to the filter plate and avoiding airflow collisions and turbulence at the smoke outlet, thus reducing noise. Attached Figure Description

[0038] The above and other objects, features, and advantages of this utility model will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this application.

[0039] Figure 1 This is a schematic diagram of the overall structure of the oil filter screen provided in an embodiment of the present utility model;

[0040] Figure 2 A schematic diagram of the oil filter screen installed on the mounting strip according to an embodiment of this utility model;

[0041] Figure 3 for Figure 1 Schematic diagram of the cross section at point AA;

[0042] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0043] Figure 5 This is a schematic diagram of the structure of a single oil filter element in an oil filter screen provided in an embodiment of the present invention;

[0044] Figure 6This is a schematic diagram of the structure of the mounting strip in the oil filter screen provided in an embodiment of the present utility model.

[0045] 100. Fixing frame; 110. Mounting strip; 111. Mounting slot; 120. Front frame; 130. Rear frame; 131. Mounting hole;

[0046] 200, Oil filter plate; 210, Main blade; 220, Outer blade; 221, First small outer blade; 222, Second small outer blade; 230, Inner blade; 231, First small inner blade; 232, Second small inner blade;

[0047] 300. Smoke inlet area; 310. Oil filter inlet;

[0048] 400. Cavity area; 410. First cavity opening; 420. Second cavity opening;

[0049] 500, Smoke Exit Area; 510, Smoke Exit Port;

[0050] 600, First oil filter plate; 610, First main blade; 620, First outer blade; 630, First inner blade;

[0051] 700, Second oil filter plate; 710, Second main blade; 720, Second outer blade; 730, Second inner blade. Detailed Implementation

[0052] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0053] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this applies. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0055] The following is combined with Figures 1 to 6 The embodiments of this utility model will be described below. It should be understood that the following description is merely an illustrative embodiment of this utility model and does not constitute any limitation on this utility model.

[0056] Combination Figures 1 to 6An embodiment of this utility model provides an oil filter screen that can be installed on a range hood. The oil filter screen includes a fixed frame 100 and multiple oil filter sheets 200.

[0057] The fixed frame 100 is equipped with an installation strip 110, which can fix each oil filter 200.

[0058] Each adjacent oil filter 200 is centrally symmetrically arranged on the mounting strip 110, meaning that each adjacent oil filter 200 can be rotated symmetrically by 180°.

[0059] Each filter element 200 includes a main blade 210, an outer blade 220, and an inner blade 230, with the outer blade 220 and the inner blade 230 both located on the main blade 210.

[0060] Each adjacent filter disc 200 has a smoke inlet zone 300, a cavity zone 400, and a smoke outlet zone 500 formed between the main blade 210, outer blade 220, and inner blade 230.

[0061] The cavity region 400 is provided with a first cavity opening 410 and a second cavity opening 420. The cavity region 400 is connected to the smoke inlet region 300 through the first cavity opening 410 and the cavity region 400 is connected to the smoke outlet region 500 through the second cavity opening 420.

[0062] The smoke inlet zone 300 is provided with an oil mesh inlet 310, and the smoke outlet zone 500 is provided with a smoke outlet 510; so that the oil fumes can enter the smoke inlet zone 300 through the oil mesh inlet 310, then enter the cavity zone 400 through the first cavity inlet 410, enter the smoke outlet zone 500 through the second cavity inlet 420, and finally be discharged through the smoke outlet 510.

[0063] The interval value d1 of the first cavity opening 410 is less than the interval value D of the oil mesh opening 310, so that the effective area of ​​the smoke inlet zone 300 gradually decreases from the oil mesh opening 310 to the first cavity opening 410; the interval value d2 of the second cavity opening 420 is less than the interval value of the smoke outlet 510, so that the effective area of ​​the smoke outlet zone 500 gradually increases from the second cavity opening 420 to the smoke outlet 510.

[0064] It is understood that the oil filter provided in the embodiments of this utility model, by setting a fixed frame 100 with mounting strip 110 and multiple oil filter plates 200, symmetrically arranges each adjacent oil filter plate 200 on the mounting strip 110, making the structure of the oil filter simpler. During manufacturing, each oil filter plate 200 only needs to be produced to the same specification, reducing manufacturing costs. Each oil filter plate 200 includes a main blade 210, an outer blade 220, and an inner blade 230, with each adjacent blade 210... The oil filter 200 has a smoke inlet zone 300, a cavity zone 400 and a smoke outlet zone 500 formed between the main blade 210, outer blade 220 and inner blade 230. The cavity zone 400 is provided with a first cavity opening 410 and a second cavity opening 420. The cavity zone 400 is connected to the smoke inlet zone 300 through the first cavity opening 410 and the cavity zone 400 is connected to the smoke outlet zone 500 through the second cavity opening 420. The smoke inlet zone 300 is provided with an oil mesh opening 310 and the smoke outlet zone 500 is provided with a smoke outlet 510.

[0065] Furthermore, the spacing of the first cavity opening 410 is smaller than the spacing of the oil mesh opening 310, causing the effective area of ​​the smoke inlet zone 300 to gradually decrease from the oil mesh opening 310 to the first cavity opening 410. This increases the flow velocity of the oil fumes at the first cavity opening 410, increasing the negative pressure in the smoke inlet zone 300, thereby enhancing the adsorption capacity of the oil mesh opening 310 for oil fumes and thus improving the oil filtration effect of the filter screen. Similarly, the spacing of the second cavity opening 420 is smaller than the spacing of the smoke outlet 510, causing the effective area of ​​the smoke outlet zone 500 to gradually decrease from the first cavity opening 410 to the second cavity opening 410. The second cavity opening 420 gradually increases in size from the smoke outlet 510. The flow velocity of the oil fumes increases sharply as they pass through the second cavity opening 420. The oil droplets in the oil fumes collide with the oil filter plate 200 under the action of inertia and are filtered again, further improving the oil filtration effect. Moreover, the effective area of ​​the smoke outlet 500 gradually increases. At the smoke outlet 510, the flow velocity of the oil fumes decreases, which can prevent the oil droplets attached to the oil filter plate 200 from being carried away. It can also avoid the airflow collision at the smoke outlet 510 and the resulting turbulence, thus reducing noise.

[0066] Specifically, in combination Figure 4 In some embodiments of this utility model, adjacent oil filter plates 200 include a first oil filter plate 600 and a second oil filter plate 700 arranged symmetrically to each other.

[0067] The first oil filter 600 includes a first main blade 610, a first outer blade 620, and a first inner blade 630. The first outer blade 620 and the first inner blade 630 are respectively disposed at both ends of the first main blade 610. For example, the first main blade 610 can be a straight plate-shaped blade, the first outer blade 620 is disposed at the first end of the first main blade 610, and the first inner blade 630 is disposed at the second end of the first main blade 610.

[0068] The second oil filter 700 includes a second main blade 710, a second outer blade 720, and a second inner blade 730. The second outer blade 720 and the second inner blade 730 are respectively disposed at both ends of the second main blade 710. For example, the second main blade 710 can be a straight plate-shaped blade, the second outer blade 720 is disposed at the first end of the second main blade 710, and the second inner blade 730 is disposed at the second end of the second main blade 710.

[0069] The first outer blade 620, the first main blade 610, the second inner blade 730, and the second main blade 710 together form a smoke inlet zone 300. An oil mesh opening 310 is formed between the first outer blade 620 and the second main blade 710, and oil fumes can enter the smoke inlet zone 300 from the oil mesh opening 310.

[0070] The second outer blade 720, the second main blade 710, the first inner blade 630, and the first main blade 610 together form a smoke outlet 500. A smoke outlet 510 is formed between the second outer blade 720 and the first main blade 610. The fumes in the smoke outlet 500 can be discharged from the smoke outlet 510.

[0071] The first main blade 610, the first inner blade 630, the second main blade 710, and the second inner blade 730 mutually form a cavity region 400; a first cavity opening 410 is formed between the first main blade 610 and the second inner blade 730, and a second cavity opening 420 is formed between the second main blade 710 and the first inner blade 630. The first oil filter 600 and the second oil filter 700 in the adjacent oil filter plates 200 are centrally symmetrical, and the positions and gaps between the blades on each oil filter plate form a smoke inlet region 300, a cavity region 400, and a smoke outlet region 500, making the structure of the oil filter simpler, the oil filtration effect better, and allowing it to be made into a single-layer oil filter, thus reducing costs. It should be noted that when the fumes enter the cavity area 400 from the first cavity opening 410, the flow velocity of the fumes at the first cavity opening 410 increases, which can accelerate the entry of the fumes into the cavity area 400. However, due to the large effective area of ​​the cavity area 400, the flow velocity of the fumes decreases suddenly after entering the cavity area 400. Under the action of inertia, the oil droplets can collide with the oil filter plates (i.e., the blades that form the cavity area 400), thereby improving the oil filtration rate.

[0072] Combination Figure 3 and Figure 4 In some embodiments of this utility model, the main blades 210 of each adjacent oil filter 200 are arranged in parallel.

[0073] The interval L between the main blades 210 of each adjacent oil filter 200 is greater than or equal to the interval D of the oil mesh opening 310. This makes the layout of each oil filter 200 more reasonable, the structure simpler, and the negative pressure of the smoke inlet zone 300 greater, so as to adsorb more oil fumes. The parallel arrangement between the main blades 210 of each adjacent oil filter 200 can keep the effective area of ​​the cavity zone 400 stable when the interval d1 of the first cavity opening 410 of the cavity zone 400 is equal to the interval d2 of the second cavity opening 420. This allows the oil fumes to stay in the cavity zone 400 for a longer time, thereby further improving the oil filtration effect.

[0074] Specifically, in combination Figure 4 In some embodiments of this utility model, the outer blade 220 includes a first small outer blade 221 and a second small outer blade 222, and the inner blade 230 includes a first small inner blade 231 and a second small inner blade 232.

[0075] The first small outer blade 221 and the second small outer blade 222 are arranged in a V shape at the first end of the main blade 210, and the first small inner blade 231 and the second small inner blade 232 are arranged in a V shape at the second end of the main blade 210.

[0076] The angle α between the first small outer blade 221 and the second small outer blade 222 is greater than or equal to 90°, α≥90°, for example, α can be 100°. When oil fumes enter the smoke inlet zone 300 from the oil filter port 310, some of the oil fumes will hit the first small outer blade 221 and the second small outer blade 222. With α≥90°, oil fumes can be separated at the outer blade 220, thereby further improving the oil filtration effect.

[0077] Furthermore, in some embodiments of this utility model, the included angle β between the first small inner blade 231 and the second small inner blade 232 is greater than or equal to the included angle α between the first small outer blade 221 and the second small outer blade 222, i.e., α≤β; this causes the effective area of ​​the smoke inlet zone 300 to gradually decrease from the oil mesh opening 310 to the first cavity opening 410, increasing the negative pressure of the smoke inlet zone 300 and enhancing the smoke inlet zone 300's ability to adsorb oil fumes; moreover, the effective area of ​​the smoke outlet zone 500 gradually increases from the second cavity opening 420 to the smoke outlet 510, reducing the oil fume flow velocity in the smoke outlet zone 500, preventing the removal of oil droplets attached to the filter and avoiding airflow collisions at the smoke outlet 510, thus reducing noise.

[0078] Of course, combined Figure 4 In some embodiments of this utility model, the included angle β between the first small inner blade 231 and the second small inner blade 232 is less than or equal to 120°, that is, β≤120°, for example, β can be 120°; so that the smoke inlet zone 300 and the smoke outlet zone 500 have the function of guiding air and improving the dynamism of oil filtration.

[0079] Specifically, in combination Figure 4 In some embodiments of this utility model, the interval L between the main blades 210 of each adjacent oil filter 200 is less than or equal to 6 mm, i.e., L ≤ 6 mm. For example, the interval L between the main blades 210 of each adjacent oil filter 200 is 2 mm or 6 mm, which may prevent the value of L from being too large and avoid the number of oil filter 200 being too small, thereby ensuring the effective contact area between the oil fume and the oil filter 200, and thus ensuring the oil filtration effect.

[0080] In some embodiments of this invention, the interval between the first cavity opening 410 and the second cavity opening 420 is greater than or equal to 2 mm, the gap value d1 of the first cavity opening 410 is ≥ 2 mm, and the gap value d2 of the second cavity opening 420 is ≥ 2 mm. For example, the gap value d1 of the first cavity opening 410 is 2 mm, and the gap value d2 of the second cavity opening 420 is 2 mm. If d1 or d2 is too small, the air inlet and outlet area of ​​the oil filter screen will be insufficient. d1 ≥ 2 mm and d2 ≥ 2 mm can ensure the flow of oil fumes in the oil filter screen, thereby ensuring the oil filtration effect.

[0081] Combination Figure 6 In some embodiments of this utility model, the fixing frame 100 includes a front frame 120 and a rear frame 130. A mounting strip 110 is disposed at the lower end of the rear frame 130, and the mounting strip 110 is provided with a plurality of mounting grooves 111. The arrangement between adjacent mounting grooves 111 matches the arrangement between adjacent oil filter plates 200.

[0082] The upper end of the rear frame 130 is provided with a plurality of mounting holes 131, the arrangement between each adjacent mounting hole 131 is matched with the arrangement between each adjacent oil filter 200, and each oil filter 200 passes through each mounting hole 131 and is inserted into each mounting groove 111.

[0083] The front frame 120 is detachably wrapped around the rear frame 130. This allows each oil filter 200 to be securely mounted on the fixed frame 100, and facilitates installation, removal, maintenance, and cleaning.

[0084] Combination Figures 1 to 6 In an embodiment of this utility model, a range hood is also provided, which includes the aforementioned oil filter and range hood body.

[0085] The oil filter screen is located on the main body of the range hood.

[0086] It is understandable that the range hood provided by this utility model, since it includes the aforementioned oil filter, inevitably possesses all the advantages of that oil filter. Specifically, the effective area of ​​the smoke exhaust zone 500 gradually increases from the second cavity opening 420 to the smoke exhaust outlet 510. The flow velocity of the fumes increases sharply as they pass through the second cavity opening 420, and the oil droplets in the fumes collide with the oil filter plate 200 under inertia, being filtered again, further improving the filtration effect. Moreover, as the effective area of ​​the smoke exhaust zone 500 gradually increases, the flow velocity of the fumes decreases at the smoke exhaust outlet 510, preventing the removal of oil droplets adhering to the oil filter plate 200 and avoiding airflow collisions and turbulence at the smoke exhaust outlet 510, thus reducing noise.

[0087] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0088] In the description of this specification, the use of terms such as "preferred embodiment," "another embodiment," "some embodiments," "other embodiments," or "specific example," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0089] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An oil filter screen, installed in a range hood, characterized in that, The oil filter screen includes: Fixed frame, equipped with mounting strip; Multiple oil filter plates are arranged symmetrically at the center of each adjacent oil filter plate on the mounting strip; Each of the oil filter plates includes a main blade, an outer blade, and an inner blade, wherein the outer blade and the inner blade are both located on the main blade. Each of the adjacent oil filter plates has a smoke inlet area, a cavity area, and a smoke outlet area formed between its main blade, outer blade, and inner blade. The cavity region is provided with a first cavity opening and a second cavity opening. The cavity region is connected to the smoke inlet area through the first cavity opening, and the cavity region is connected to the smoke outlet area through the second cavity opening. The smoke inlet area is equipped with an oil filter inlet, and the smoke outlet area is equipped with a smoke outlet. The spacing between the first cavity openings is less than the spacing between the oil mesh openings, and the spacing between the second cavity openings is less than the spacing between the smoke outlets.

2. The oil filter screen as described in claim 1, characterized in that, The adjacent oil filter plates include a first oil filter plate and a second oil filter plate arranged symmetrically to each other. The first oil filter includes a first main blade, a first outer blade, and a first inner blade, with the first outer blade and the first inner blade respectively located at both ends of the first main blade. The second oil filter includes a second main blade, a second outer blade, and a second inner blade, with the second outer blade and the second inner blade respectively located at both ends of the second main blade; The first outer blade, the first main blade, the second inner blade, and the second main blade together form the smoke inlet area, and the oil mesh opening is formed between the first outer blade and the second main blade. The second outer blade, the second main blade, the first inner blade, and the first main blade together form the smoke outlet area, and the smoke outlet is formed between the second outer blade and the first main blade. The first main blade, the first inner blade, the second main blade, and the second inner blade mutually form the cavity region. The first cavity opening is formed between the first main blade and the second inner blade, and the second cavity opening is formed between the second main blade and the first inner blade.

3. The oil filter screen as described in claim 2, characterized in that, The main blades of each adjacent oil filter plate are arranged in parallel. The spacing between the main blades of each adjacent oil filter is greater than or equal to the spacing between the oil mesh openings.

4. The oil filter screen as described in claim 3, characterized in that, The outer blades include a first small outer blade and a second small outer blade, and the inner blades include a first small inner blade and a second small inner blade. The first small outer blade and the second small outer blade are arranged in a V-shape at the first end of the main blade, and the first small inner blade and the second small inner blade are arranged in a V-shape at the second end of the main blade. The angle between the first small outer blade and the second small outer blade is greater than or equal to 90°.

5. The oil filter screen as described in claim 4, characterized in that, The angle between the first inner blade and the second inner blade is greater than or equal to the angle between the first outer blade and the second outer blade.

6. The oil filter screen as described in claim 5, characterized in that, The angle between the first inner blade and the second inner blade is less than or equal to 120°.

7. The oil filter screen as described in claim 6, characterized in that, The spacing between the main blades of each adjacent filter plate is less than or equal to 6 mm.

8. The oil filter screen as described in claim 7, characterized in that, The interval between the first cavity opening and the second cavity opening is greater than or equal to 2 mm.

9. The oil filter screen as described in claim 1, characterized in that, The fixing frame includes a front frame and a rear frame, and the mounting strip is located at the lower end of the rear frame. The mounting strip has multiple mounting slots. The upper end of the rear frame is provided with multiple mounting holes, and each oil filter plate passes through each mounting hole and is inserted into each mounting slot. The front frame is detachably wrapped around the rear frame.

10. A range hood, characterized in that, Includes the oil filter and range hood body as described in any one of claims 1 to 9. The oil filter screen is located on the main body of the range hood.

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