Silent filtering range hood

By combining static and dynamic filters, the problem of insufficient single-stage filtration in traditional range hoods is solved, achieving thorough filtration of oil fumes and extending the service life of the fan.

CN224175237UActive Publication Date: 2026-04-28ZHEJIANG YINGLUN LUOFU ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG YINGLUN LUOFU ELECTRIC CO LTD
Filing Date
2025-05-30
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Traditional range hoods use a single-stage filtration method, which results in insufficient filtration of oil fumes. Oil from the fumes enters the fan, shortening the fan's lifespan.

Method used

The system employs a combination of static and dynamic filters. The fumes are first filtered through a static filter and then through a rotating dynamic filter, resulting in a double filtration process that enhances filtration efficiency.

Benefits of technology

Through two filtration processes, the oil in the fumes is thoroughly filtered out, reducing the amount of oil entering the fan and extending the fan's lifespan.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a silent filtering range hood, relates to the technical field of kitchen utensils, and solves the technical problems that a traditional range hood in the prior art generally adopts a single-stage filtering mode, so that the oil smoke filtering effect is insufficient, a large amount of oil enters a fan along with oil smoke, and the service life of the fan is shortened. The device comprises an air inlet main body, at least one first air inlet is formed in the front wall of the air inlet main body, a static filter or a dynamic filter is installed in the first air inlet, at least one dynamic filter or static filter is arranged above an outlet in the top of the air inlet main body, and the static filter or the dynamic filter is arranged above the outlet in the top of the air inlet main body. The dynamic filter can rotate relative to the air inlet body. According to the utility model, dynamic and static mechanical filters are adopted, and a photolysis technology is creatively added, so that the lampblack filtering effect is optimal.
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Description

Technical Field

[0001] This utility model relates to the field of kitchen appliances technology, and in particular to a silent filter range hood. Background Technology

[0002] As living standards improve, range hoods have gradually become an indispensable appliance in people's kitchens. Range hoods can quickly exhaust the fumes produced during cooking to ensure a clean indoor air environment.

[0003] In existing technology, traditional range hoods generally adopt a single-stage filtration method, that is, a layer of oil filter screen is set at the air inlet of the range hood. The oil fumes generated in the kitchen are filtered through only one layer of oil filter screen and then discharged outside by the fan inside the range hood.

[0004] The applicant has discovered that the prior art has at least the following technical problems:

[0005] In existing technologies, traditional range hoods generally use a single-stage filtration method, which leads to insufficient filtration of oil fumes. A large amount of oil enters the fan along with the fumes, which can shorten the lifespan of the fan and may even cause the oil to be discharged outside. Utility Model Content

[0006] The purpose of this utility model is to provide a silent filter range hood to solve the technical problem that traditional range hoods in the prior art generally use a single-stage filtration method, which leads to insufficient oil fume filtration and allows a large amount of oil to enter the fan along with the oil fume, resulting in a shortened lifespan of the fan. The various technical effects of the preferred technical solutions provided by this utility model are detailed below.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This utility model provides a silent filter range hood, including an air intake body, wherein at least one first air inlet is provided on the front wall of the air intake body, and a static filter or a dynamic filter is installed in the first air inlet. At least one of the dynamic filters or the static filter is provided above the top outlet of the air intake body, and the dynamic filter can rotate relative to the air intake body.

[0009] Optionally, at least one auxiliary air inlet is provided on the top interior of the air intake body, and a filter is installed in the auxiliary air inlet;

[0010] A removable oil cup is provided at the lower end of the air intake body.

[0011] Optionally, the air intake body is provided with a glass oil baffle, the glass oil baffle is located in front of the front wall of the air intake body, there is an opening between the lower end of the glass oil baffle and the lower part of the front wall of the air intake body, and there is an air intake channel between the glass oil baffle and the front wall of the air intake body.

[0012] The glass oil baffle is equipped with control elements.

[0013] Optionally, the static filter is disposed at an angle relative to the top of the air intake body;

[0014] The static filter is made of metal material and has a tubular, porous, or mesh structure.

[0015] Optionally, all of the dynamic filters are arranged side by side along a horizontal plane;

[0016] The dynamic filter includes a motor and a metal mesh flywheel, the output shaft of the motor is connected to the metal mesh flywheel and the motor can drive the metal mesh flywheel to rotate.

[0017] Optionally, it also includes a conduit and an air extraction body, wherein the top outlet of the air inlet body is connected to the lower inlet of the air extraction body through the conduit, and the air extraction body is located above the ceiling in the room.

[0018] Optionally, the exhaust body includes a housing and a fan. The fan is installed horizontally inside the housing. The lower inlet of the housing is connected to the through pipe, and the oil fume outlet of the fan is connected to the side wall outlet of the housing.

[0019] Optionally, the fan includes a volute, with an air intake on both the upper and lower plates of the volute, an oil fume outlet on the circumferential sidewall of the volute, a plurality of small holes arranged in a mesh pattern on the circumferential sidewall of the volute, and a sound insulation part on the circumferential sidewall of the volute, wherein the sound insulation part covers all the small holes.

[0020] Optionally, it also includes a decorative panel that fits over the outside of the through pipe;

[0021] An ultraviolet light source is installed inside the tube;

[0022] The conduit has a straight cylindrical structure;

[0023] A sound insulation component is provided between the decorative panel and the through pipe.

[0024] Optionally, an activated carbon assembly is installed at the fume outlet of the extraction body.

[0025] This utility model provides a silent filter range hood, in which a static filter is installed in the first air inlet, and at least one dynamic filter is installed above the top outlet of the air intake body. The oil fumes generated in the kitchen are first filtered by the static filter, and then pass through the dynamic filter along the channel inside the air intake body. The dynamic filter filters the oil fumes again by rotating. Through two filtrations, the filtration efficiency is enhanced, so that the oil fumes are fully filtered, preventing a large amount of oil in the oil fumes from entering the fan, reducing the impact of oil on the fan's lifespan. This solves the technical problem that the traditional range hoods in the prior art generally use a single-stage filtration method, which leads to insufficient oil fume filtration and a large amount of oil entering the fan with the oil fumes, resulting in a shortened lifespan of the fan. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a side view of a silent filter range hood provided in an embodiment of this utility model;

[0028] Figure 2 This is a front view of a silent filter range hood with the glass baffle removed, provided in an embodiment of this utility model.

[0029] Figure 3 This is a front view of another type of silent filter range hood without the glass baffle provided in this embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the volute structure of a silent filter range hood provided in an embodiment of this utility model.

[0031] In the diagram: 1. Main intake unit; 11. Static filter; 12. Dynamic filter; 13. Auxiliary air inlet; 14. Filter; 15. Oil cup; 16. Glass oil baffle; 17. Vent; 18. Intake channel;

[0032] 2. Passing pipe; 21. Ultraviolet light source;

[0033] 3. Main exhaust unit; 31. Outer casing; 32. Fan; 321. Volute; 322. Fume outlet; 323. Small hole; 324. Sound insulation section;

[0034] 4. Decorative partition panels;

[0035] 5. Suspended ceiling. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] This utility model provides a silent filter range hood, including an air intake body 1, wherein at least one first air inlet is provided on the front wall of the air intake body 1, and a static filter 11 or a dynamic filter 12 is installed in the first air inlet. At least one dynamic filter 12 or a static filter 11 is provided above the top outlet of the air intake body 1, and the dynamic filter 12 can rotate relative to the air intake body 1. This utility model provides a silent filter range hood, in which a static filter 11 is installed in the first air inlet, and at least one dynamic filter 12 is provided above the top outlet of the air intake body 1. The oil fumes generated in the kitchen are first filtered by the static filter 11, and then pass through the dynamic filter 12 along the channel inside the air intake body 1. The dynamic filter 12 filters the oil fumes again by rotating. Through two filtrations, the filtration efficiency is enhanced, so that the oil fumes are fully filtered, preventing a large amount of oil in the oil fumes from entering the fan, reducing the impact of oil on the life of the fan. This solves the technical problem that the traditional range hoods in the prior art generally adopt a single-stage filtration method, which leads to insufficient oil fume filtration and a large amount of oil entering the fan with the oil fumes, resulting in a shortened life of the fan. The filtration process of a silent range hood according to this application is as follows: 1. The oil fumes generated in the kitchen can first be filtered by a static filter 11 and then by a dynamic filter 12; 2. Or the oil fumes generated in the kitchen can first be filtered by a dynamic filter 12 and then by a static filter 11; 3. Or the oil fumes generated in the kitchen can be filtered by two static filters 11; 4. Or the oil fumes generated in the kitchen can be filtered by two dynamic filters 12.

[0040] As an optional implementation, at least one auxiliary air inlet 13 is provided on the top interior of the air intake body 1. A filter 14 is installed in the auxiliary air inlet 13. When the kitchen produces a lot of oil fumes, some of the oil fumes will not have time to enter the first air inlet and will continue to rise, thus entering the air intake body 1 through the auxiliary air inlet 13. The filter 14 will perform initial filtration on the oil fumes passing through the auxiliary air inlet 13, and then perform secondary filtration through the dynamic filter 12. The structure of the filter 14 is the same as that of the static filter 11.

[0041] The lower end of the air intake body 1 is provided with a removable oil cup 15, which is used to collect the filtered oil.

[0042] As an optional implementation, a glass baffle plate 16 is provided on the air intake body 1. The glass baffle plate 16 is located in front of the front wall of the air intake body 1. There is an opening 17 between the lower end of the glass baffle plate 16 and the lower part of the front wall of the air intake body 1. There is an air intake channel 18 between the glass baffle plate 16 and the front wall of the air intake body 1. The oil fumes generated in the kitchen will enter the air intake channel 18 through the opening 17, and then enter the first air inlet along the air intake channel 18. Some water vapor and some oil can stick to the outer wall of the glass baffle plate 16.

[0043] The glass baffle 16 contains a control element that controls the start or stop of the silent filter range hood and the speed setting.

[0044] As an optional implementation, the static filter 11 is inclined relative to the top of the air intake body 1, with its lower end close to the rear wall of the air intake body 1 and its upper end away from the rear wall of the air intake body 1. This allows the fumes to pass smoothly through the static filter 11 as they rise. The static filter 11 can be made of metal and formed into a tubular, porous, or mesh structure. The static filter 11 is removable for easy cleaning.

[0045] As an optional implementation, all dynamic filters 12 are arranged side-by-side along a horizontal plane. Each dynamic filter 12 includes a motor and a metal mesh flywheel. The motor's output shaft is connected to the metal mesh flywheel, and the motor drives the flywheel to rotate. The motor's housing is connected to the through-pipe 2. The metal mesh flywheel is located inside the through-pipe 2 and near the top outlet of the air intake body 1. By driving the metal mesh flywheel to rotate in the horizontal plane, the motor blocks the passage of oil in the fumes. The dynamic filter 12 is removable for easy cleaning. When there is only one dynamic filter 12, the diameter of the metal mesh flywheel is slightly smaller than the diameter of the through-pipe 2, but slightly larger than the diameter of the top outlet of the air intake body 1.

[0046] As an optional implementation, the system also includes a connecting pipe 2 and an extraction body 3. The top outlet of the air inlet body 1 is connected to the lower inlet of the extraction body 3 via the connecting pipe 2. The upper end of the connecting pipe 2 is connected to the lower inlet of the extraction body 3 via a flexible hose. The extraction body 3 is located above the ceiling 5 in the room. When the extraction body 3 is working, it will generate relatively large noise. By installing the extraction body 3 above the ceiling 5, the noise can be reduced by the ceiling 5, providing users with a comfortable, quiet, and healthy kitchen environment. The connecting pipe 2 is used to separate the extraction body 3 from the air inlet body 1, increasing the distance between the two, so that the extraction body 3 can be kept away from the stove, making it easier to install above the ceiling 5.

[0047] As an optional implementation, the exhaust body 3 includes a housing 31 and a fan 32. The fan 32 is installed horizontally inside the housing 31. The lower inlet of the housing 31 is connected to the connecting pipe 2, and the fume outlet 322 of the fan 32 is connected to the side wall outlet of the housing 31. When the fan 32 is running, it creates a negative pressure zone at the first air inlet and the auxiliary air inlet 13 of the intake body 1. As a result, the fumes are drawn into the intake body 1 from the first air inlet and the auxiliary air inlet 13, then along the connecting pipe 2 into the exhaust port of the fan 32, and finally discharged outside through the fume outlet 322.

[0048] As an optional implementation, the fan 32 includes a volute 321. Both the upper and lower plates of the volute 321 have air intake ports. An oil fume outlet 322 is provided on the circumferential sidewall of the volute 321. Multiple small holes 323 are arranged in a mesh pattern on the circumferential sidewall of the volute 321. A sound insulation part 324 is provided on the circumferential sidewall of the volute 321, and the sound insulation part 324 covers all the small holes 323. The sound insulation part 324 can be sound insulation cotton or sound insulation cloth. The volute 321 is suspended inside the outer casing 31. The oil fume outlet 322 on the volute 321 is connected to the sidewall outlet of the outer casing 31, and the oil fume outlet 322 passes through the sidewall outlet of the outer casing 31. The fumes entering the outer casing 31 through the conduit 2 can enter the volute 321 through either the exhaust port on the lower plate or the exhaust port on the upper plate, and then be discharged through the fume outlet 322. The sound insulation section 324 and the small hole 323 are designed to reduce the noise of the fan 32.

[0049] As an optional implementation, it also includes a decorative panel 4, which is fitted over the outside of the through pipe 2. A sound insulation component is provided between the decorative panel 4 and the through pipe 2. The decorative panel 4 is for decorative purposes. A sound insulation component can be provided inside the decorative panel 4, or a sound insulation component can be provided on the outer wall of the through pipe 2. The sound insulation component can be sound insulation cotton or sound insulation cloth.

[0050] The inside of the pipe 2 is equipped with an ultraviolet light source 21, which can photodecompose the oil fumes that have undergone secondary filtration. The pipe 2 has a straight cylindrical structure, and the air intake of the lower plate of the volute 321 can be directly opposite the upper port of the pipe 2, so that a small amount of oil adhering to the fan 32 can drip down the pipe 2.

[0051] As an optional implementation, an activated carbon component is installed at the fume outlet 322 of the exhaust body 3, which can further filter the exhaust fumes.

[0052] When the silent filter range hood of this application is running, the oil fumes generated in the kitchen pass through a static filter 11, a dynamic filter 12, an ultraviolet light source 21, and an activated carbon component in sequence, so that the oil fumes pass through four filtration methods, thereby enhancing the filtration effect.

[0053] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A silent, filtered range hood, characterized in that, Including the air intake body (1), wherein, At least one first air inlet is provided on the front wall of the air intake body (1), and a static filter (11) or a dynamic filter (12) is installed in the first air inlet. At least one of the dynamic filters (12) or the static filter (11) is provided above the top outlet of the air intake body (1), and the dynamic filter (12) can rotate relative to the air intake body (1).

2. The silent filter range hood according to claim 1, characterized in that, At least one auxiliary air inlet (13) is provided on the top interior of the air intake body (1), and a filter (14) is installed in the auxiliary air inlet (13). The lower end of the air intake body (1) is provided with a removable oil cup (15).

3. The silent filter range hood according to claim 1, characterized in that, The air intake body (1) is provided with a glass oil baffle (16), which is located in front of the front wall of the air intake body (1). There is an opening (17) between the lower end of the glass oil baffle (16) and the lower part of the front wall of the air intake body (1), and there is an air intake channel (18) between the glass oil baffle (16) and the front wall of the air intake body (1). The glass oil baffle (16) is equipped with control elements.

4. A silent filter range hood according to claim 1, characterized in that, The static filter (11) is inclined relative to the top of the air intake body (1); The static filter (11) is made of metal material and has a tubular, porous, or mesh structure.

5. A silent filter range hood according to claim 1, characterized in that, All of the dynamic filters (12) are arranged side by side along the horizontal plane; The dynamic filter (12) includes a motor and a metal mesh flywheel, the output shaft of the motor is connected to the metal mesh flywheel and the motor can drive the metal mesh flywheel to rotate.

6. A silent filter range hood according to claim 1, characterized in that, It also includes a through pipe (2) and an air extraction body (3). The top outlet of the air inlet body (1) is connected to the lower inlet of the air extraction body (3) through the through pipe (2). The air extraction body (3) is located above the ceiling (5) in the room.

7. A silent filter range hood according to claim 6, characterized in that, The exhaust body (3) includes a shell (31) and a fan (32). The fan (32) is installed in the shell (31) in a horizontal position. The lower inlet of the shell (31) is connected to the through pipe (2). The oil fume outlet (322) of the fan (32) is connected to the side wall outlet of the shell (31).

8. A silent filter range hood according to claim 7, characterized in that, The fan (32) includes a volute (321), with an air intake on the upper and lower plates of the volute (321). The volute (321) has an oil fume outlet (322) on its circumferential sidewall. The volute (321) has a plurality of small holes (323) arranged in a mesh pattern on its circumferential sidewall. The volute (321) has a sound insulation part (324) on its circumferential sidewall, and the sound insulation part (324) covers all the small holes (323).

9. A silent filter range hood according to claim 6, characterized in that, It also includes a decorative panel (4), which is fitted over the outside of the through pipe (2); An ultraviolet light source (21) is installed inside the tube (2); The through pipe (2) has a straight cylindrical structure; A sound insulation component is provided between the decorative panel (4) and the through pipe (2).

10. A silent filter range hood according to claim 6, characterized in that, An activated carbon assembly is installed at the fume outlet (322) of the exhaust body (3).