Range hood

Abstract

This application discloses a range hood, relating to the field of kitchen appliances. The range hood includes a smoke collection hood, a filter assembly, an oil scraping assembly, and an oil cup. The smoke collection hood forms an air inlet. The filter assembly is disposed within the smoke collection hood and includes a filter screen. The oil scraping assembly includes a support frame and an oil scraping part and an oil guiding part disposed on the support frame. The oil scraping part abuts against the filter screen, and the oil scraping part and the filter screen can slide relative to each other in a first direction. The oil guiding part is disposed at the end of the support frame near the oil cup, and is used to guide the oil collected by the oil scraping assembly to the oil cup. When it is necessary to remove the oil accumulated on the filter screen, it is only necessary to move the filter screen and the oil scraping assembly relative to each other, allowing the oil scraping part to slide on the filter screen and remove the oil. Therefore, the range hood provided in this application embodiment allows for convenient cleaning of the filter screen, thereby helping the range hood maintain a good smoke extraction effect.

Description

Technical Field

[0001] This application relates to the field of kitchen appliance technology, and more specifically, to a range hood. Background Technology

[0002] The filters in related range hoods need to be removed and cleaned after a period of use; otherwise, the mesh will become clogged with grease, affecting the smoke extraction effect. Some filters are even fixed and cannot be disassembled, requiring only a cloth to clean the outer surface. After a period of use, the filter surface accumulates a lot of dirt, breeding bacteria and affecting the kitchen environment. Therefore, the filters in these range hoods are not easy to clean. Utility Model Content

[0003] The purpose of this application is to provide a range hood that allows for easy cleaning of the filter, thereby maintaining a good smoke extraction effect.

[0004] The embodiments of this application can be implemented as follows: In a first aspect, this application provides a range hood, including a smoke collection hood, a filter assembly, an oil scraping assembly, and an oil cup. The smoke collection hood forms an air inlet, the filter assembly is disposed on the smoke collection hood, the filter assembly includes a filter screen, the oil scraping assembly includes a bracket and an oil scraping part and an oil guiding part disposed on the bracket, the oil scraping part abuts against the filter screen, and the oil scraping part and the filter screen can slide relative to each other in a first direction, the oil guiding part is disposed at one end of the bracket near the oil cup, and the oil guiding part is used to guide the oil collected by the oil scraping assembly to the oil cup.

[0005] In an optional embodiment, the bracket is fixedly connected to the smoke hood, and the filter screen can move relative to the smoke hood so that the oil scraping part slides on the filter screen.

[0006] In an optional embodiment, the bracket includes a first support portion, which is spaced apart from the filter screen. The first support portion extends along a second direction, which is perpendicular to the first direction. The oil scraping portion includes a first oil scraping portion, which is disposed on the side of the first support portion facing the filter screen and extends along the second direction.

[0007] In an optional embodiment, the first support portion is provided with a first guide flange on at least one side in the first direction, one side of the first guide flange is connected to the first support portion, and the other side of the first guide flange is bent away from the filter screen.

[0008] In an optional embodiment, an oil drain groove is provided on the first support portion, and the oil drain groove penetrates the first support portion in a direction perpendicular to the filter screen.

[0009] In an optional embodiment, the first support is provided with two first oil scraping parts, which are spaced apart in a first direction, and the oil drain groove is located between the two first oil scraping parts.

[0010] In an optional embodiment, the filter assembly is disposed at the air inlet, and the oil guide is disposed at one end of the first support in the second direction near the oil cup. One end of the oil guide is connected to the first support, and the other end of the oil guide protrudes from the end of the first support in the second direction and bends into the air inlet.

[0011] In an optional embodiment, the oil drain groove extends along a second direction, and the two opposite edges of the oil drain groove in the first direction are bent away from the filter screen to form an oil baffle.

[0012] In an optional embodiment, the bracket further includes a second support portion, and the oil scraping portion further includes a second oil scraping portion. The second support portion is spaced apart from the first support portion, a portion of the filter screen is located between the first support portion and the second support portion, and the second oil scraping portion is located on the side of the second support portion facing the filter screen. The first oil scraping portion and the second oil scraping portion clamp the filter screen.

[0013] In an optional embodiment, the second support is provided with a second guide flange on at least one side in the first direction, one side of the second guide flange is connected to the second support, and the other side of the second guide flange is bent away from the filter screen.

[0014] In an optional embodiment, the distance between the first support and the second support is adjustable.

[0015] In an optional embodiment, the oil scraping assembly further includes an adjusting bolt that passes through one of the first support portion and the second support portion and is screwed to the other of the first support portion and the second support portion.

[0016] In an optional embodiment, the smoke hood includes a flange disposed at the edge of the air inlet, and the bracket includes a connecting portion that is connected to the flange of the smoke hood.

[0017] In an optional embodiment, the material of the oil scraper is rubber.

[0018] The beneficial effects of the range hood provided in this application embodiment include: The range hood provided in this application includes a smoke collection hood, a filter assembly, an oil scraping assembly, and an oil cup. The smoke collection hood forms an air inlet. The filter assembly is disposed on the smoke collection hood and includes a filter screen. The oil scraping assembly includes a bracket and an oil scraping part and an oil guiding part disposed on the bracket. The oil scraping part abuts against the filter screen, and the oil scraping part and the filter screen can slide relative to each other in a first direction. The oil guiding part is disposed at one end of the bracket near the oil cup and is used to guide the oil collected by the oil scraping assembly to the oil cup. When it is necessary to remove the oil accumulated on the filter screen, it is only necessary to move the filter screen and the oil scraping assembly relative to each other, so that the oil scraping part slides on the filter screen to remove the oil. This eliminates the need to remove the filter screen for cleaning, and also eliminates the need for the user to use additional cleaning items (such as a rag) to clean the filter screen, thus achieving self-cleaning of the range hood. Furthermore, by providing the oil guiding part, the oil collected by the oil scraping assembly can be guided to the oil cup, preventing the oil from flowing randomly and causing contamination to other parts of the range hood or even the stove. It also helps the oil scraping assembly maintain a better oil scraping effect. Therefore, the range hood provided in this application embodiment can easily clean the filter, which helps the range hood maintain a good smoke extraction effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view of a range hood in one embodiment of this application; Figure 2 This is a schematic diagram of the rear of a range hood in one embodiment of this application; Figure 3 This is a schematic diagram of a filtering component in one embodiment of this application; Figure 4 This is a disassembly diagram of the back side of a range hood in one embodiment of this application; Figure 5 This is a schematic diagram of the first flange and the support shaft in one embodiment of this application; Figure 6 This is a schematic diagram of the assembly of the filter and the oil scraping assembly in one embodiment of this application; Figure 7 This is a schematic diagram of the bracket of the oil scraping assembly in one embodiment of this application; Figure 8 This is a schematic diagram of the first assembly of the filter and the oil scraping assembly in another embodiment of this application; Figure 9This is a second assembly diagram of the filter and the oil scraping assembly in another embodiment of this application; Figure 10 This is a disassembly diagram of the back side of the range hood in another embodiment of this application; Figure 11 This is an assembly diagram of the filter, active support shaft, and drive component in one embodiment of this application.

[0021] Icons: 100-Fog hood; 101-Air inlet; 110-First flange; 111-Through hole; 120-Second flange; 130-Third flange; 140-Fourth flange; 200-Main unit chassis; 300-Exhaust pipe; 400-Filter assembly; 410-Support shaft; 411-Active support shaft; 412-Pawl; 420-Filter screen; 421-Inner straight section; 422-Outer straight section; 423-Matching hole; 424-Handle structure; 500 - Oil scraping assembly; 510- Bracket; 511- First support part; 512- First guide flange; 513- Oil drain groove; 514- Oil baffle part; 515- Oil guide part; 516- Connecting part; 517- Fitting part; 520- Second support part; 521- Second guide flange; 522- Adjusting bolt; 530- First oil scraping part; 540- Second oil scraping part; 600- Oil cup; 700- Drive component; 800- Panel assembly; 900- Control assembly. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application 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 application.

[0026] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0027] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0028] In related technologies, when a large amount of grease accumulates on the filter of a range hood, the user needs to remove the filter for cleaning; or, without removing the filter, other cleaning tools (such as a cloth) can be used to clean the filter directly on the range hood. Both of these methods suffer from poor convenience and low cleaning efficiency.

[0029] To address the shortcomings of the aforementioned related technologies, this application provides a range hood that, by incorporating an oil scraping component, allows the component to slide relative to the filter screen, thereby scraping away oil stains on the filter screen and achieving the purpose of cleaning the filter screen with high cleaning efficiency.

[0030] Figure 1 This is a front view of a range hood in one embodiment of this application; Figure 2 This is a schematic diagram of the rear of a range hood in one embodiment of this application. Figure 1 and Figure 2 As shown, the range hood provided in this embodiment includes a smoke collection hood 100, a main unit 200, an exhaust pipe 300, a filter assembly 400, and an oil scraping assembly 500. The smoke collection hood 100 forms an air inlet 101 (see...). Figure 4The main unit 200 is connected above the fume hood 100, and the exhaust pipe 300 passes through the main unit 200 and communicates with the fume hood 100. A fan (not shown in the figure) is installed inside the main unit 200. The fan provides suction, allowing air containing oil fumes to enter from the air inlet 101 of the fume hood 100 and be exhausted outdoors through the exhaust pipe 300. A filter assembly 400 is installed at the fume hood 100 to filter the airflow entering the air inlet 101. In this embodiment, the filter assembly 400 is installed at the air inlet 101. In other optional embodiments, the filter assembly 400 can also be installed inside the fume hood 100, downstream of the air inlet 101. The filter assembly 400 can prevent foreign objects from entering the range hood and can also intercept oil stains in the airflow. In this embodiment, two air inlets 101 are formed on the fume hood 100, and a filter assembly 400 is installed at each of the two air inlets 101. In other alternative embodiments, the number of air inlets 101 and filter components 400 on the smoke hood 100 may be one or more.

[0031] In this embodiment, the range hood further includes an oil cup 600, which is disposed below the air inlet 101 and the filter assembly 400. The oil cup 600 is used to collect oil droplets from the filter assembly 400 and the oil scraping assembly 500. Optionally, the range hood also includes a panel assembly 800, which can be controlled to move relative to the smoke collection hood 100, thereby opening or closing the air inlet 101. When the range hood is not in use, the panel assembly 800 can be used to close the air inlet 101, thus obscuring the air inlet 101 and improving the aesthetics of the range hood. In other optional embodiments, the panel assembly 800 may be omitted.

[0032] Optionally, the fume hood 100 is also equipped with a control component 900, which allows users to control the range hood to perform various operations, such as turning on the power, turning off the power, switching modes, and adjusting the airflow. The control component 900 may include buttons or a touch screen.

[0033] Figure 3 This is a schematic diagram of a filtering component 400 in one embodiment of this application. (In conjunction with...) Figures 1 to 3In this application, the filter assembly 400 includes a filter screen 420, and a portion of the oil-scraping assembly 500 abuts against the filter screen 420. The filter screen 420 and the oil-scraping assembly 500 can move relative to each other, allowing the oil-scraping assembly 500 to slide on the filter screen 420 to scrape away oil stains, thereby achieving self-cleaning of the range hood. In this embodiment, the oil-scraping assembly 500 is fixedly connected to the smoke collection hood 100, and the filter screen 420 can move relative to the smoke collection hood 100 so that the oil-scraping assembly 500 (specifically, the oil-scraping part) slides on the filter screen 420. It should be understood that in other optional embodiments, the filter screen 420 can also be fixed relative to the smoke collection hood 100, and the oil-scraping assembly 500 can be movable relative to the filter screen 420.

[0034] Specifically, the filter assembly 400 further includes two support shafts 410, and the filter screen 420 is a flexible, annular filter screen. The two support shafts 410 are connected to the smoke hood 100 and spaced apart from each other, with the filter screen 420 sleeved on the two support shafts 410. In this embodiment, the two support shafts 410 support the filter screen 420, and the filter screen 420 can rotate on the two support shafts 410 to allow the oil scraping assembly 500 to slide relative to the filter screen 420. It can be understood that since the filter screen 420 is annular, it includes an inner straight section 421 and an outer straight section 422 located between the two support shafts 410 and spaced parallel to each other. The inner straight section 421 is closer to the interior of the smoke hood 100 than the outer straight section 422. In other words, when the fumes enter the fume hood 100, they will pass through the outer straight section 422 and the inner straight section 421 in succession. Therefore, the filter 420 in this embodiment can filter the fumes twice, resulting in a better filtration effect.

[0035] In this embodiment, the two support shafts 410 are spaced apart in a first direction, and the support shafts 410 extend along a second direction, with the first direction perpendicular to the second direction. In other words, the inner straight section 421 and the outer straight section 422 between the two support shafts 410 are parallel to the first and second directions.

[0036] Furthermore, the filter 420 assembly also includes a handle structure 424, which is disposed on the side of the filter 420 facing away from the air inlet 101. Specifically, in this embodiment, the handle structure 424 is disposed on the side of the outer straight section 422 opposite to the inner straight section 421. In this embodiment, the handle structure 424 is a handle protruding from the surface of the filter 420. It can be understood that by providing the handle structure 424, it is convenient for the user to grasp the handle structure 424 and then pull the filter 420 to move, thereby allowing the oil stains on the filter 420 to be scraped off by the oil scraping assembly 500. In other optional embodiments, the handle structure 424 can also be a gripping hole, gripping groove, boss, or other structures that are convenient for the user to grip.

[0037] Figure 4This is a disassembly diagram of the back side of a range hood in one embodiment of this application. Figure 4 As shown in this embodiment, the edge of the air inlet 101 is provided with a flange, and both ends of the support shaft 410 are respectively connected to the flange. Specifically, in this embodiment, the flanges of the edge of the air inlet 101 are all folded inward towards the air inlet 101. Further, the air inlet 101 is rectangular, and the upper and lower edges of the air inlet 101 are respectively provided with a first flange 110 and a second flange 120, and the two horizontal edges of the air inlet 101 are respectively provided with a third flange 130 and a fourth flange 140. Both ends of the support shaft 410 are respectively connected to the first flange 110 and the second flange 120.

[0038] Figure 5 This is a schematic diagram of the first flange 110 and the support shaft 410 in one embodiment of this application. Figure 5 As shown, the first flange 110 has a through hole 111, and the second flange 120 has a threaded hole (to accommodate a nut). The lower end of the support shaft 410 is threaded, allowing it to pass through the through hole 111 on the first flange 110 and then be screwed into the threaded hole on the second flange 120. Correspondingly, the upper end of the support shaft 410 may have an internal hexagonal socket, facilitating the use of a hexagonal wrench to tighten the support shaft 410 during installation.

[0039] In this embodiment, the filter screen 420 slides relative to the support shaft 410 when it rotates; in other optional embodiments, the support shaft 410 may also include a shaft core and a bushing, with the bushing sleeve fitted on the outside of the shaft core and the filter screen 420 fitted on the outside of the bushing sleeve; when the filter screen 420 rotates, the shaft core remains stationary, and the bushing rotates with the filter screen 420.

[0040] Figure 6 This is a schematic diagram illustrating the assembly of the filter 420 and the oil scraping assembly 500 in one embodiment of this application. Figure 6 As shown, in this embodiment, the oil-scraping assembly 500 abuts against the inner straight section 421, thereby cleaning the filter screen 420 of the inner straight section 421 by scraping away oil. In other embodiments, the oil-scraping assembly 500 may also abut against the outer straight section 422; or, at least two oil-scraping assemblies 500 may be provided for each filter screen 420, with the two oil-scraping assemblies 500 abutting against the inner straight section 421 and the outer straight section 422 respectively, thereby cleaning the inner straight section 421 and the outer straight section 422 by scraping away oil. Optionally, when two oil-scraping assemblies 500 are provided to abut against the inner straight section 421 and the outer straight section 422 respectively, the two oil-scraping assemblies 500 are respectively adjacent to different support shafts 410, so that when the inner straight section 421 completely passes through one oil-scraping assembly 500, the outer straight section 422 also completely passes through the other oil-scraping assembly 500, thereby ensuring comprehensive cleaning. Figure 6In the embodiment shown, the user can pull the handle structure 424 to the left along the first direction, and the inner straight section 421 of the filter screen 420 moves to the right, and the oil scraping assembly 500 scrapes off the oil stains on the inner straight section 421.

[0041] Figure 7 This is a schematic diagram of the bracket 510 of the oil scraping assembly 500 in one embodiment of this application. (In conjunction with...) Figure 6 and Figure 7 In this embodiment, the oil scraping assembly 500 includes a bracket 510 and an oil scraping part and an oil guiding part 515 disposed on the bracket 510. The oil scraping part abuts against the filter screen 420, and the oil scraping part and the filter screen 420 can slide relative to each other in a first direction. The bracket 510 is connected to the fume hood 100, and the oil scraping part abuts against the filter screen 420 (specifically the inner straight section 421 in this embodiment) between the two support shafts 410. When the filter screen 420 rotates on the two support shafts 410, the oil scraping part slides relative to the filter screen 420. The oil guiding part 515 is disposed at one end of the bracket 510 near the oil cup 600, and the oil guiding part 515 is used to guide the oil collected by the oil scraping assembly 500 to the oil cup 600. In this embodiment, the support 510 includes a strip-shaped first support portion 511, which is spaced apart from the filter screen 420 and extends along a second direction. The oil-scraping portion includes a first oil-scraping portion 530, which is disposed on the side of the first support portion 511 facing the filter screen 420. The first oil-scraping portion 530 is strip-shaped and extends along the second direction. It should be understood that the dimensions of the first support portion 511 and the first oil-scraping portion 530 in the second direction should be comparable to the dimensions of the filter screen 420 in the second direction to ensure that the first oil-scraping portion 530 can comprehensively scrape oil from the filter screen 420, avoiding any omissions.

[0042] In this embodiment, the first support portion 511 has a first guide flange 512 on at least one side in the first direction. One side of the first guide flange 512 is connected to the first support portion 511, and the other side of the first guide flange 512 is bent away from the filter screen 420. The first guide flange 512 can form an open structure with the filter screen 420. When scraping oil, the open side faces the oil stains, and the first guide flange 512 can guide the oil stains to the first oil scraping portion 530, which plays a role in collecting the oil stains. Then, the oil stains on the surface of the filter screen 420 are quickly scraped off by the first oil scraping portion 530. The first oil scraping portion 530 can reduce the overflow of oil stains to other places that cannot be scraped off by the oil scraping portion (such as the side of the first support portion 511 away from the filter screen 420), thus improving the oil stain removal effect.

[0043] In this embodiment, an oil drain groove 513 is provided on the first support portion 511, and the oil drain groove 513 penetrates the first support portion 511 in a direction perpendicular to the filter screen 420. Since oil residue may still remain between the first support portion 511 and the filter screen 420 after the first oil scraping portion 530 scrapes oil, oil residue can easily accumulate between the first support portion 511 and the filter screen 420 over time. This embodiment ensures that the oil residue can be smoothly drained by providing the oil drain groove 513.

[0044] The oil drain groove 513 is a strip-shaped groove extending along the second direction. Two opposite edges of the oil drain groove 513 in the first direction are bent away from the filter screen 420 to form oil-blocking portions 514. The two oil-blocking portions 514 guide the oil in the oil drain groove 513, allowing it to flow along the second direction to the end of the first support portion 511, preventing oil from overflowing onto the outer surface of the first support portion 511 and flowing freely. Furthermore, the two oil-blocking portions 514 also increase the structural strength of the bracket 510 and improve its bending resistance.

[0045] Furthermore, the first support portion 511 is provided with at least two first oil scraping portions 530, which are spaced apart in a first direction, and an oil drain groove 513 is located between two adjacent first oil scraping portions 530. By providing two first oil scraping portions 530, the cleaning effect on the filter screen 420 can be improved; and the oil between the two first oil scraping portions 530 can be discharged through the oil drain groove 513. In this embodiment, the number of first oil scraping portions 530 is two; in other embodiments, the number of first oil scraping portions 530 can be three or more.

[0046] In this embodiment, the oil guiding part 515 is disposed at the end of the first support part 511 near the oil cup 600 in the second direction. One end of the oil guiding part 515 is connected to the first support part 511, and the other end of the oil guiding part 515 protrudes from the end of the first support part 511 in the second direction and bends inward toward the air inlet 101. It can be understood that the end of the first support part 511 near the oil cup 600 in the second direction is the lower end of the first support part 511. By providing the oil guiding part 515, when the oil in the oil drain 513 flows downward, it can collect at the lowest point of the oil guiding part 515. Since the lowest point of the oil guiding part 515 (i.e., the end away from the first support part 511) bends inward toward the air inlet 101, the dripping position of the oil can be prevented from being too far outward. Optionally, the vertical projection of the lowest point of the oil guiding part 515 extends beyond the second flange 120 of the fume hood 100. Therefore, oil will drip from the oil guiding part 515 into the fume hood 100 and eventually into the oil cup 600, preventing oil from accumulating at the second flange of the fume hood 100 and avoiding the risk of oil flowing outward from the second flange 120. In this embodiment, the first support part 511 is provided with oil guiding parts 515 at both ends in the second direction, which improves the versatility of the bracket 510 and facilitates the symmetrical installation of the oil scraping assembly 500.

[0047] In this embodiment, the bracket 510 further includes a connecting portion 516, which is connected to the flange of the smoke hood 100. Specifically, the connecting portion 516 is connected to the first support portion 511 and is set at an angle (e.g., a 90° angle) with the first support portion 511. The connecting portion 516 is fitted to and fixedly connected to the third flange 130. Optionally, the connecting portion 516 and the third flange 130 can be connected by fasteners (including but not limited to screws), or by welding or bonding. Further, a fitting portion 517 is provided on the side of the connecting portion 516 away from the first support portion 511, and the fitting portion 517 is set at an angle (e.g., a 90° angle) with the connecting portion 516. The fitting portion 517 fits against the inner wall of the smoke hood 100, thereby improving the stability of the bracket 510. The fitting portion 517 can also be connected to the inner wall of the smoke hood 100 by fasteners, welding, bonding, or other methods.

[0048] Figure 8 This is a schematic diagram of the first assembly of the filter 420 and the oil scraping assembly 500 in another embodiment of this application; Figure 9 This is a second assembly diagram of the filter 420 and the oil scraping assembly 500 in another embodiment of this application. Figure 8 and Figure 9As shown, the bracket 510 also includes a second support portion 520, and the oil scraping portion includes a second oil scraping portion 540. The second support portion 520 is spaced apart from the first support portion 511. A portion of the filter screen 420 is located between the first support portion 511 and the second support portion 520. The second oil scraping portion 540 is disposed on the side of the second support portion 520 facing the filter screen 420. The first oil scraping portion 530 and the second oil scraping portion 540 clamp the filter screen 420. By having the first oil scraping portion 530 and the second oil scraping portion 540 jointly clamp the filter screen 420, oil stains on both sides of the filter screen 420 can be scraped off, thereby improving the cleaning effect. In this embodiment, the first oil scraping portion 530 and the second oil scraping portion 540 are directly opposite each other in the thickness direction of the filter screen 420, thus ensuring a better clamping effect. The first oil scraping portion 530 and the second oil scraping portion 540 provide mutual squeezing force, thereby improving the oil stain removal effect. In alternative embodiments, the first oil-scraping portion 530 and the second oil-scraping portion 540 may not be directly opposite each other in the thickness direction of the filter screen 420, but may be staggered. Since the first oil-scraping portion 530 and the second oil-scraping portion 540 exert pressure on the filter screen 420, the filter screen 420 will bend to a certain extent at the positions of the first oil-scraping portion 530 and the second oil-scraping portion 540. As the filter screen 420 passes through the first oil-scraping portion 530 and the second oil-scraping portion 540, the oil stains on both sides can be effectively cleaned.

[0049] Furthermore, the second support portion 520 is provided with a second guide flange 521 on at least one side in the first direction. One side of the second guide flange 521 is connected to the second support portion 520, and the other side of the second guide flange 521 is bent away from the filter screen 420. The function of the second guide flange 521 is similar to that of the first guide flange 512, which can guide and collect oil stains.

[0050] Optionally, the distance between the first support portion 511 and the second support portion 520 is adjustable. By adjusting the distance between the first support portion 511 and the second support portion 520, the oil scraping assembly 500 can adapt to filter screens 420 of different thicknesses; and the tightness of the first oil scraping portion 530 and the second oil scraping portion 540 clamping the filter screen 420 can be adjusted. A suitable clamping tightness can ensure a better cleaning effect, while also preventing the filter screen 420 from being difficult to move.

[0051] like Figure 9As shown, the oil scraping assembly 500 also includes an adjusting member, which is connected to the first support portion 511 and the second support portion 520. The adjusting member is used to adjust the distance between the first support portion 511 and the second support portion 520. In this embodiment, the adjusting member includes an adjusting bolt 522. Optionally, the adjusting bolt 522 passes through one of the first support portion 511 and the second support portion 520 and is screwed to the other of the first support portion 511 and the second support portion 520. In this embodiment, after passing through the first support portion 511, the adjusting bolt 522 is screwed to the second support portion 520. By turning the adjusting bolt 522, the distance between the first support portion 511 and the second support portion 520 can be adjusted, thereby adjusting the tightness of the first oil scraping portion 530 and the second oil scraping portion 540 in clamping the filter screen 420. It should be noted that the adjusting bolts 522 should avoid the filter screen 420. For example, the length of the first support part 511 and the second support part 520 in the second direction is greater than the size of the filter screen 420 in the second direction. The two adjusting bolts 522 are connected and set at both ends of the first support part 511 and the second support part 520 in the second direction. The two adjusting bolts 522 are located on both sides of the filter screen 420 in the second direction.

[0052] Optionally, the oil scraping part of the oil scraping assembly 500 (including the first oil scraping part 530 and the second oil scraping part 540) is made of rubber. Rubber has a certain structural strength to ensure the force of scraping off oil stains; at the same time, the rubber oil scraping part is not easy to scratch the filter screen 420.

[0053] Figure 4 In the illustrated embodiment, the user needs to manually pull the filter 420 to remove the oil. In other optional embodiments, the movement of the filter 420 can also be electrically driven, thus saving manpower. Figure 10 This is a disassembly diagram of the back side of the range hood in another embodiment of this application; Figure 11 This is a schematic diagram of the assembly of the filter 420, the active support shaft 411, and the drive component 700 in one embodiment of this application. Figure 10 and Figure 11 As shown, in this embodiment, the filter 420 assembly further includes a drive member 700 disposed on the smoke collection hood 100, which drives the filter 420 to rotate. Specifically, at least one support shaft 410 is an active support shaft 411, and a plurality of pawls 412 are protruding from the outer peripheral surface of the active support shaft 411, the pawls 412 being spaced apart around the outer peripheral surface of the active support shaft 411. A plurality of mating holes 423 are provided on the filter 420, the mating holes 423 being spaced apart in the circumferential direction of the filter 420, and the pawls 412 are movably engaged with the mating holes 423. The drive member 700 is drively connected to the active support shaft 411 and is used to drive the active support shaft 411 to rotate. In this embodiment, the pawls 412 are inserted into the mating holes 423.

[0054] In this embodiment, one of the two support shafts 410 is the active support shaft 411, while the other support shaft 410 is fixed or serves as a driven shaft. In other optional embodiments, both support shafts 410 may be active support shafts 411. The two ends of the active support shaft 411 are rotatably connected to the first flange 110 and the second flange 120, respectively. One end face of the active support shaft 411 has an internal hexagonal hole for transmission connection with the output shaft of the drive component 700.

[0055] Using a drive unit 700 to drive the filter screen 420 to rotate not only saves manpower but also eliminates the need for a handle structure 424. This allows the filter screen 420 to rotate cyclically on the two support shafts 410, enabling the entire filter screen 420 to be cleaned with just one oil scraping assembly 500. For example, when the drive unit 700 drives the filter screen 420 to rotate one revolution, each part of the filter screen 420 passes through the oil scraping assembly 500 once, meaning that every part of the filter screen 420 is cleaned.

[0056] In all the above embodiments, the filter screen 420 is made of a flexible material and is ring-shaped. The filter screen 420 slides relative to the oil scraping assembly 500 by rotating. In other optional embodiments, the filter screen 420 can also be a planar structure made of a rigid material. The filter screen 420 slides relative to the oil scraping assembly 500 by translating.

[0057] In summary, this application provides a range hood. The range hood includes a smoke collection hood 100, a filter assembly 400, an oil scraping assembly 500, and an oil cup 600. The smoke collection hood 100 forms an air inlet 101. The filter assembly 400 is disposed in the smoke collection hood 100 and includes a filter screen 420. The oil scraping assembly 500 includes a bracket 510 and an oil scraping part and an oil guiding part 515 disposed on the bracket 510. The oil scraping part abuts against the filter screen 420, and the oil scraping part and the filter screen 420 can slide relative to each other in a first direction. The oil guiding part 515 is disposed at one end of the bracket 510 near the oil cup 600, and the oil guiding part 515 is used to guide the oil collected by the oil scraping assembly 500 to the oil cup 600. When it is necessary to remove the accumulated grease on the filter 420, simply move the filter 420 relative to the oil scraping component 500, allowing the oil scraping part to slide on the filter 420 and remove the grease. This achieves self-cleaning of the range hood, eliminating the need to remove the filter 420 for cleaning or for the user to use additional cleaning items (such as a cloth). Furthermore, by providing an oil guide, the grease collected by the oil scraping component 500 is directed to the oil cup 600, preventing grease from flowing freely and contaminating other parts of the range hood or even the stovetop. This also helps the oil scraping component 500 maintain optimal oil scraping performance. Therefore, the range hood provided in this embodiment allows for convenient cleaning of the filter 420, thus helping the range hood maintain good smoke extraction performance.

[0058] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A range hood, characterized in that, The system includes a fume hood (100), a filter assembly (400), an oil scraping assembly (500), and an oil cup (600). The fume hood (100) forms an air inlet (101). The filter assembly (400) is disposed on the fume hood (100) and includes a filter screen (420). The oil scraping assembly (500) includes a bracket (510) and an oil scraping part and an oil guiding part (515) disposed on the bracket (510). The oil scraping part abuts against the filter screen (420), and the oil scraping part and the filter screen (420) can slide relative to each other in a first direction. The oil guiding part (515) is disposed at one end of the bracket (510) near the oil cup (600) and is used to guide the oil collected by the oil scraping assembly (500) to the oil cup (600).

2. The range hood according to claim 1, characterized in that, The bracket (510) is fixedly connected to the smoke hood (100), and the filter (420) can move relative to the smoke hood (100) so that the oil scraping part slides on the filter (420).

3. The range hood according to claim 1, characterized in that, The bracket (510) includes a first support portion (511), which is spaced apart from the filter screen (420). The first support portion (511) extends along a second direction, which is perpendicular to the first direction. The oil scraping portion includes a first oil scraping portion (530), which is disposed on the side of the first support portion (511) facing the filter screen (420). The first oil scraping portion (530) extends along the second direction.

4. The range hood according to claim 3, characterized in that, The first support portion (511) is provided with a first guide flange (512) on at least one side in the first direction. One side of the first guide flange (512) is connected to the first support portion (511), and the other side of the first guide flange (512) is bent away from the filter screen (420).

5. The range hood according to claim 3, characterized in that, The filter assembly (400) is disposed at the air inlet (101), and the oil guide (515) is disposed at one end of the first support (511) in the second direction near the oil cup (600). One end of the oil guide (515) is connected to the first support (511), and the other end of the oil guide (515) protrudes from the end of the first support (511) in the second direction and bends into the air inlet (101).

6. The range hood according to claim 3, characterized in that, The first support (511) is provided with an oil drain groove (513), which penetrates the first support (511) in a direction perpendicular to the filter screen (420).

7. The range hood according to claim 6, characterized in that, The oil drain groove (513) extends along the second direction, and the two opposite edges of the oil drain groove (513) in the first direction are bent away from the filter screen (420) to form an oil baffle (514).

8. The range hood according to claim 3, characterized in that, The bracket (510) further includes a second support portion (520), and the oil scraping portion further includes a second oil scraping portion (540). The second support portion (520) is spaced apart from the first support portion (511). A portion of the filter screen (420) is located between the first support portion (511) and the second support portion (520). The second oil scraping portion (540) is located on the side of the second support portion (520) facing the filter screen (420). The first oil scraping portion (530) and the second oil scraping portion (540) clamp the filter screen (420).

9. The range hood according to claim 8, characterized in that, The second support (520) has a second guide flange (521) on at least one side in the first direction. One side of the second guide flange (521) is connected to the second support (520), and the other side of the second guide flange (521) is bent away from the filter (420).

10. The hood according to claim 8, characterized in that, The distance between the first support part (511) and the second support part (520) is adjustable.

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