Range hood

Abstract

The invention discloses a range hood, and relates to the field of kitchen appliances. The range hood comprises an exhaust fume collecting hood, a filter assembly and an oil scraping assembly, an air inlet is formed in the exhaust fume collecting hood, and the filter assembly is arranged at the air inlet and comprises a filter screen; the oil scraping assembly comprises a support, an oil scraping part and a guide structure, the oil scraping part and the guide structure are arranged on the support, the support is connected to the exhaust fume collecting hood, the filter screen can slide relative to the oil scraping part, and the guide structure is used for guiding oil dirt on the filter screen to the oil scraping part. According to the extractor hood provided by the embodiment of the invention, the filter screen can be conveniently cleaned, so that the extractor hood can keep a relatively good oil smoke suction effect.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a range hood. Background Art

[0002] The filters in conventional range hoods need to be removed and cleaned after a period of use, otherwise the mesh becomes clogged with oil and dirt, affecting the efficiency of extracting oil fumes. Furthermore, some filters are fixed and cannot be removed, requiring only a rag to clean the outer surface. After a period of use, the filter surface accumulates dirt, breeding bacteria and affecting the kitchen environment. Therefore, conventional range hood filters are difficult to clean. Summary of the Invention

[0003] The purpose of this application includes providing a range hood that can easily clean the filter to maintain a good oil fume absorption effect.

[0004] The embodiments of the present application can be implemented as follows: The present application provides a range hood, comprising a smoke hood, a filter assembly and an oil scraping assembly. The smoke hood forms an air inlet, the filter assembly is arranged at the air inlet, and the filter assembly includes a filter screen; the oil scraping assembly includes a bracket and an oil scraping part and a guide structure arranged on the bracket, the bracket is connected to the smoke hood, the oil scraping part abuts the filter screen, the filter screen and the oil scraping part slide relative to each other, and the guide structure is used to guide the oil on the filter screen to the oil scraping part.

[0005] In an optional embodiment, the filter assembly further includes a handle structure, which is arranged on a side of the filter screen facing outward from the air inlet.

[0006] In an optional embodiment, the filter assembly further includes a driving member disposed on the smoke collecting hood, and the driving member is used to drive the filter to move.

[0007] In an optional embodiment, the filter assembly also includes two support shafts, the filter is a flexible filter and is annular, the two support shafts are connected to the smoke hood and are spaced apart from each other, the filter is sleeved on the two support shafts, and the filter can rotate on the two support shafts so that the oil scraping part and the filter slide relative to each other.

[0008] In an optional embodiment, at least one support shaft is an active support shaft, and a plurality of pawls are convexly provided on the outer circumferential surface of the active support shaft, and the plurality of pawls are arranged at intervals around the outer circumferential surface of the active support shaft. A plurality of matching holes are opened on the filter screen, and the plurality of matching holes are arranged at intervals in the circumferential direction of the filter screen, and the pawls are movably engaged with the matching holes; the filter assembly also includes a driving member arranged on the smoke hood, which is in transmission connection with the active support shaft and is used to drive the active support shaft to rotate.

[0009] In an optional embodiment, the edge of the air inlet is provided with a flange, and both ends of the support shaft are respectively connected to the flange.

[0010] In an optional embodiment, the two support shafts are spaced apart in a first direction, the support shafts extend along a second direction, the first direction is perpendicular to the second direction, and the oil scraping portion abuts against the filter screen between the two support shafts.

[0011] In an optional embodiment, the filter screen includes an inner straight section and an outer straight section located between the two support shafts and spaced parallel to each other, and the inner straight section is closer to the inside of the smoke hood relative to the outer straight section; The oil scraping portion of the oil scraping assembly abuts against one of the inner straight section or the outer straight section; or, the range hood includes at least two oil scraping assemblies, and the oil scraping portions of the two oil scraping assemblies abut against the inner straight section and the outer straight section respectively.

[0012] In an optional embodiment, the filter can slide in a first direction relative to the oil scraper; the bracket includes a first support portion, the first support portion is spaced apart from the filter, the oil scraper portion includes a first scraper portion, the first scraper portion is arranged on the side of the first support portion facing the filter, and the guide structure includes a first guide flange provided on at least one side of the first support portion 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 in a direction away from the filter.

[0013] In an optional embodiment, an oil drain groove is provided on the first support portion, and the oil drain groove passes through the first support portion and exposes the filter screen.

[0014] In an optional embodiment, at least two first oil scraping portions are provided on the first supporting portion, the at least two first oil scraping portions are spaced apart in the first direction, and the oil drain groove is located between two adjacent first oil scraping portions.

[0015] In an optional embodiment, the range hood further includes an oil cup, which is used to receive oil droplets from the filter. An oil guide portion is provided at one end of the first support portion close to the oil cup in the second direction. One end of the oil guide portion is connected to the first support portion, and the other end of the oil guide portion protrudes from the end of the first support portion along the second direction and bends into the air inlet. The second direction is perpendicular to the first direction.

[0016] In an optional embodiment, two opposite edges of the oil drain groove in the first direction are bent away from the filter screen to form an oil blocking portion.

[0017] In an optional embodiment, the bracket also includes a second support portion, the oil scraper portion also includes a second oil scraper portion, the second support portion is spaced apart from the first support portion, a part of the filter is located between the first support portion and the second support portion, the second oil scraper portion is arranged on the side of the second support portion facing the filter, and the first oil scraper portion and the second oil scraper portion clamp the filter.

[0018] In an optional embodiment, the guide structure further includes a second guide flange provided on at least one side of the second support portion in the first direction, one side of the second guide flange is connected to the second support portion, and the other side of the second guide flange is bent in a direction away from the filter screen.

[0019] In an optional embodiment, the distance between the first supporting portion and the second supporting portion is adjustable.

[0020] In an optional embodiment, the oil scraping assembly further includes an adjusting member connected to the first supporting portion and the second supporting portion, and the adjusting member is used to adjust the distance between the first supporting portion and the second supporting portion.

[0021] In an optional embodiment, the adjusting member includes an adjusting bolt, which passes through one of the first supporting portion and the second supporting portion and is threadedly connected to the other of the first supporting portion and the second supporting portion.

[0022] In an optional embodiment, the oil scraping portion is made of rubber.

[0023] The beneficial effects of the range hood provided by the embodiment of the present application include: The range hood provided in an embodiment of the present application includes a fume hood, a filter assembly, and an oil scraper assembly. The fume hood forms an air inlet, and the filter assembly is disposed at the air inlet. The filter assembly includes a filter screen. The oil scraper assembly includes a bracket, an oil scraper portion disposed on the bracket, and a guide structure. The bracket is connected to the fume hood, and the oil scraper portion abuts the filter screen. The filter screen can slide relative to the oil scraper portion, and the guide structure is used to guide oil on the filter screen toward the oil scraper portion. When it is necessary to remove oil accumulated on the filter screen, the oil scraper portion can be simply slid relative to the filter screen to allow the oil scraper portion to scrape the oil off the filter screen. This eliminates the need to remove the filter screen for cleaning and eliminates the need for the user to carry a separate cleaning item (such as a rag) to clean the filter screen. Furthermore, the guide structure can guide oil on the filter screen to the oil scraper portion as much as possible, preventing the oil from overflowing to other locations where it cannot be scraped by the oil scraper, thereby improving the oil removal efficiency. Therefore, the range hood provided in the embodiment of the present application can conveniently clean the filter and has a good cleaning effect, which is conducive to the range hood maintaining a good oil fume extraction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a front view of a range hood in one embodiment of the present application; Figure 2 This is a schematic diagram of the back of a range hood in one embodiment of the present application; Figure 3 This is a schematic diagram of a filter assembly in one embodiment of the present application; Figure 4 This is a disassembled schematic diagram of the back side of a range hood in one embodiment of the present application; Figure 5 This is a schematic diagram of a first flange and a support shaft in one embodiment of the present application; Figure 6 This is a schematic diagram of the assembly of the filter screen and the oil scraper assembly in one embodiment of the present application; Figure 7 This is a schematic diagram of a bracket of an oil scraper assembly in one embodiment of the present application; Figure 8 This is a first assembly diagram of the filter screen and the oil scraper assembly in another embodiment of the present application; Figure 9 This is a second assembly diagram of the filter screen and the oil scraper assembly in another embodiment of the present application; Figure 10 This is a disassembled schematic diagram of the back side of a range hood in another embodiment of the present application; Figure 11 This is a schematic diagram of the assembly of the filter, active support shaft and drive member in one embodiment of the present application.

[0026] Icons: 100 - smoke hood; 101 - air inlet; 110 - first flange; 111 - through hole; 120 - second flange; 130 - third flange; 140 - fourth flange; 200 - main chassis; 300 - exhaust pipe; 400 - filter assembly; 410 - support shaft; 411 - active support shaft; 412 - ratchet; 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 supporting part; 512-first guide flange; 513-oil drain groove; 514-oil baffle; 515-oil guiding part; 516-connecting part; 517-fitting part; 520-second supporting part; 521-second guide flange; 522-adjusting bolt; 530-first oil scraping part; 540-second oil scraping part; 600-oil cup; 700-driving part; 800-panel assembly; 900-control assembly. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] In the description of this application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the invented product is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0031] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0032] It should be noted that, in the absence of conflict, the features in the embodiments of this application can be combined with each other.

[0033] When a large amount of oil accumulates on the filter of a range hood in the related art, the user needs to remove the filter for cleaning; or, the user can use other cleaning tools (such as a rag) to clean the filter directly on the range hood without removing the filter. Both methods have the problems of poor convenience and low cleaning efficiency.

[0034] In order to improve the deficiencies in the above-mentioned related technologies, an embodiment of the present application provides a range hood. By setting an oil scraping assembly and a flexible and rotatable annular filter, the oil scraping assembly and the filter can slide relative to each other, thereby scraping off the oil stains on the filter, achieving the purpose of cleaning the filter with high cleaning efficiency.

[0035] Figure 1 This is a front view of a range hood in one embodiment of the present application; Figure 2Figure 1 is a schematic view of the back of an extractor hood according to an embodiment of the present application. As shown in Figure 1 and Figure 2 , the extractor hood according to the embodiment of the present application comprises a smoke collecting cover 100, a main cabinet 200, an exhaust pipe 300, a filter assembly 400 and an oil scraping assembly 500. The smoke collecting cover 100 forms an air inlet 101 (see Figure 4 ), the main cabinet 200 is connected above the smoke collecting cover 100, and the exhaust pipe 300 passes through the main cabinet 200 and communicates with the smoke collecting cover 100. A fan (not shown in the figure) is arranged in the main cabinet 200, and the fan is used to provide suction force so that air containing oil fume can enter from the air inlet 101 of the smoke collecting cover 100 and be discharged to the outdoor through the exhaust pipe 300. The filter assembly 400 is arranged at the air inlet 101 and is used to filter the airflow entering the air inlet 101. The filter assembly 400 can block foreign matters from entering the extractor hood and can intercept oil stains in the airflow. In the embodiment, two air inlets 101 are formed on the smoke collecting cover 100, and one filter assembly 400 is arranged at each air inlet 101. In alternative embodiments, the number of air inlets 101 and filter assemblies 400 on the smoke collecting cover 100 can also be one or more than three.

[0036] In the embodiment, the extractor hood further comprises an oil cup 600 arranged below the air inlets 101 and the filter assemblies 400. The oil cup 600 is used to receive oil droplets from the filter assemblies 400. Alternatively, the extractor hood further comprises a panel assembly 800, and the panel assembly 800 can be controlled to move relative to the smoke collecting cover 100 so as to open or close the air inlets 101. When the extractor hood is not used, the panel assembly 800 can be controlled to close the air inlets 101 to shield the air inlets 101 and improve the appearance of the extractor hood. In alternative embodiments, the panel assembly 800 can also be omitted.

[0037] Alternatively, the smoke collecting cover 100 is further provided with a control assembly 900, and a user can control the extractor hood to perform related operations such as starting power, closing power, switching modes, adjusting air volume and the like through the control assembly 900. The control assembly 900 can include a button or a touch screen.

[0038] Figure 3 Figure 2 is a schematic view of the filter assembly 400 according to an embodiment of the present application. In combination with Figures 1 to 3In this application, the filter assembly 400 includes a filter screen 420, and a portion of the oil scraper assembly 500 abuts against the filter screen 420. The filter screen 420 and the oil scraper assembly 500 are capable of relative movement, allowing the oil scraper assembly 500 to slide on the filter screen 420 to scrape away oil stains from the filter screen 420. In this embodiment, the oil scraper assembly 500 is fixedly connected to the fume hood 100, and the filter screen 420 is movable relative to the fume hood 100, allowing the oil scraper assembly 500 (specifically, the oil scraper portion) to slide on the filter screen 420.

[0039] Specifically, the filter assembly 400 further includes two support shafts 410, and the filter screen 420 is a flexible filter screen in an annular shape. The two support shafts 410 are connected to the smoke hood 100 and are spaced apart from each other, and the filter screen 420 is 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 and the filter screen 420 to slide relative to each other. It will be understood that since the filter screen 420 is annular, the filter screen 420 includes an inner straight section 421 and an outer straight section 422 located between the two support shafts 410 and spaced apart from each other in parallel, wherein 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 cooking fumes enter the fume hood 100, they pass through the outer straight section 422 and the inner straight section 421. Therefore, the filter 420 in this embodiment can filter the cooking fumes twice, resulting in a better filtering effect. In this embodiment, the oil scraper assembly 500 (specifically, the oil scraper portion) abuts the filter 420 between the two support shafts 410.

[0040] In this embodiment, the two support shafts 410 are spaced apart in the first direction and extend along the second direction, wherein the first direction is 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 direction and the second direction.

[0041] Furthermore, the filter assembly 400 also includes a handle structure 424, which is provided on the side of the filter 420 facing the outside of the air inlet 101. Specifically in the present embodiment, the handle structure 424 is provided on the side of the outer straight section 422 away from the inner straight section 421. In the present 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, so that the oil stains on the filter 420 are scraped off by the oil scraping assembly 500. In other optional embodiments, the handle structure 424 can also be other structures that are convenient for the user to grasp, such as a grip hole, a grip groove, a boss, etc.

[0042] Figure 4 This is a disassembled schematic diagram of the back side of a range hood in one embodiment of the present application. Figure 4As shown, in the embodiment of the present application, the edge of the air inlet 101 is provided with a flange, and the two ends of the support shaft 410 are respectively connected to the flange. Specifically, in this embodiment, the flanges on the edge of the air inlet 101 are folded inward of the air inlet 101. Furthermore, 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. The two side edges of the air inlet 101 in the horizontal direction are respectively provided with a third flange 130 and a fourth flange 140. The two ends of the support shaft 410 are respectively connected to the first flange 110 and the second flange 120.

[0043] Figure 5 Schematic diagram of the first flange 110 and the support shaft 410 in one embodiment of the present application. Figure 5 As shown, the first flange 110 is provided with a through hole 111, and the second flange 120 is provided with a screw hole (a nut can be installed to form the screw hole). The lower end of the support shaft 410 is threaded, allowing the support shaft 410 to pass through the through hole 111 in the first flange 110 and then be screwed into the screw hole in the second flange 120. Correspondingly, the upper end of the support shaft 410 can have a hexagonal hole to facilitate the installer to use a hexagonal wrench to tighten the support shaft 410 when installing the support shaft 410.

[0044] In this embodiment, the filter screen 420 slides relative to the support shaft 410 when rotating; in other optional embodiments, the support shaft 410 may also include a shaft core and a shaft sleeve, the shaft sleeve is arranged on the outside of the shaft core, and the filter screen 420 is arranged on the outside of the shaft sleeve; when the filter screen 420 rotates, the shaft core is fixed and the shaft sleeve rotates with the filter screen 420.

[0045] In other optional embodiments, the filter screen 420 may also be a planar structure made of a rigid material, and the filter screen 420 slides relative to the oil scraping assembly 500 by translation, thereby achieving oil scraping.

[0046] Figure 6 FIG. 4 is a schematic diagram of the assembly of the filter screen 420 and the oil scraping assembly 500 in one embodiment of the present application. Figure 6In the embodiment shown, the oil scraping assembly 500 abuts against the inner straight section 421, so that the filter screen 420 of the inner straight section 421 can be scraped and cleaned. In other embodiments, the oil scraping assembly 500 can also abut against the outer straight section 422; or, at least two oil scraping assemblies 500 are provided corresponding to each filter screen 420, and the two oil scraping assemblies 500 abut against the inner straight section 421 and the outer straight section 422 respectively, so that the inner straight section 421 and the outer straight section 422 can be scraped and cleaned. Optionally, in the case where 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 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 6 In 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 the oil stains on the inner straight section 421.

[0047] Figure 7 A schematic view of the bracket 510 of the oil scraping assembly 500 in an embodiment of the present application is shown. In combination with the description of the oil scraping assembly 500, the bracket 510 of the oil scraping assembly 500 is described. Figure 6 and Figure 7 In the embodiment shown, the oil scraping assembly 500 includes a bracket 510, and an oil scraping portion and a guide structure provided on the bracket 510. The oil scraping portion abuts against the filter screen 420, and the oil scraping portion and the filter screen 420 are relatively slidable in the first direction. The guide structure is used to guide the oil stains on the filter screen 420 to the oil scraping portion. The bracket 510 is connected to the smoke hood 100, and the oil scraping portion abuts against the filter screen 420 between the two support shafts 410 (in the embodiment shown, specifically the inner straight section 421), and when the filter screen 420 rotates on the two support shafts 410, the oil scraping portion and the filter screen 420 are relatively slidable. In the embodiment shown, the bracket 510 includes a first support portion 511 in the form of a strip, and the first support portion 511 is spaced apart from the filter screen 420 and extends in the second direction. The oil scraping portion includes a first oil scraping portion 530, and the first oil scraping portion 530 is provided on the side of the first support portion 511 facing the filter screen 420, and the first oil scraping portion 530 is in the form of a strip and extends in the second direction. It should be understood that the size of the first support portion 511 and the first oil scraping portion 530 in the second direction should be comparable to the size of the filter screen 420 in the second direction, so that the first oil scraping portion 530 can scrape the filter screen 420 comprehensively and avoid omissions.

[0048] In this embodiment, the guide structure includes a first guide flange 512 disposed on at least one side of the first support portion 511 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 420. The first guide flange 512 forms an open structure with the filter 420. During oil scraping, the open structure faces the oil, and the first guide flange 512 guides the oil to the first scraping portion 530, thereby collecting the oil. The first scraping portion 530 then quickly scrapes the oil off the surface of the filter 420. The first scraping portion 530 reduces the risk of oil overflowing to locations that cannot be scraped by the scraping portion (such as the side of the first support portion 511 facing away from the filter 420), thereby improving the oil removal efficiency.

[0049] In this embodiment, an oil drain groove 513 is provided on the first support portion 511. The oil drain groove 513 extends through the first support portion 511 in a direction perpendicular to the filter 420. After the first oil scraper 530 scrapes the oil, some oil residue from the filter 420 may enter the space between the first support portion 511 and the filter 420. Over time, this space can easily accumulate between the first support portion 511 and the filter 420. In this embodiment, the provision of the oil drain groove 513 ensures that the oil can be drained away smoothly.

[0050] The oil drain groove 513 is a strip-shaped groove extending along the second direction. Two opposing edges of the oil drain groove 513 in the first direction bend away from the filter 420 to form an oil retaining portion 514. The two oil retaining portions 514 guide the oil in the oil drain groove 513 along the second direction to the end of the first support portion 511, preventing the oil from overflowing onto the outer surface of the first support portion 511 and flowing freely. The two oil retaining portions 514 also increase the structural strength of the bracket 510, improving its bending resistance.

[0051] Furthermore, the first support portion 511 is provided with at least two first oil scraping portions 530 spaced apart in the first direction, with the oil drain groove 513 located between two adjacent first oil scraping portions 530. The provision of two first oil scraping portions 530 improves the cleaning effect on the filter 420; oil between the two first oil scraping portions 530 can be drained through the oil drain groove 513. In this embodiment, there are two first oil scraping portions 530; in other embodiments, the number of first oil scraping portions 530 may be three or more.

[0052] In the embodiment, the first supporting part 511 is provided with an oil guiding part 515 at one end thereof close to the oil cup 600 in the second direction. One end of the oil guiding part 515 is connected to the first supporting part 511, and the other end of the oil guiding part 515 protrudes from the end of the first supporting part 511 in the second direction and is bent into the air inlet 101. It can be understood that the one end of the first supporting part 511 close to the oil cup 600 in the second direction is the lower end of the first supporting part 511. By providing the oil guiding part 515, when the oil stains in the oil discharge groove 513 flow downward, the oil stains can be collected 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 supporting part 511) is bent into the air inlet 101, the dripping position of the oil stains can be avoided to be too close to the outside. Alternatively, the vertical projection of the lowest point of the oil guiding part 515 exceeds the second flange 120 of the smoke hood 100, so that the oil stains can drip from the oil guiding part 515 into the smoke hood 100, avoiding the oil stains from being collected at the second flange of the smoke hood 100 and the risk of the oil stains flowing out from the second flange 120. In the embodiment, the oil guiding part 515 is provided at both ends of the first supporting part 511 in the second direction, which improves the versatility of the bracket 510 and facilitates the symmetrical installation of the oil scraping assembly 500.

[0053] In the embodiment, the bracket 510 further includes a connecting part 516, and the connecting part 516 of the bracket 510 is connected to the flange of the smoke hood 100. Specifically, the connecting part 516 is connected to the first supporting part 511 and is arranged at an angle (such as 90°) with the first supporting part 511, and the connecting part 516 is attached to and fixedly connected to the third flange 130. Alternatively, the connecting part 516 and the third flange 130 can be connected by fasteners (including but not limited to screws), or can be connected by welding, bonding, etc. Further, the side of the connecting part 516 away from the first supporting part 511 is further provided with an attaching part 517 arranged at an angle (such as 90°) with the connecting part 516. The attaching part 517 is attached to the inner wall of the smoke hood 100, thereby improving the stability of the bracket 510. The attaching part 517 can also be connected to the inner wall of the smoke hood 100 by fasteners or welding, bonding, etc.

[0054] Figure 8 A first assembly schematic view of the filter screen 420 and the oil scraping assembly 500 in another embodiment of the present application; Figure 9 A second assembly schematic view of the filter screen 420 and the oil scraping assembly 500 in another embodiment of the present application. As Figure 8 and Figure 9As shown, 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, with a portion of the filter 420 positioned between the first support portion 511 and the second support portion 520. The second oil scraping portion 540 is positioned on the side of the second support portion 520 facing the filter 420. The first oil scraping portion 530 and the second oil scraping portion 540 clamp the filter 420. By jointly clamping the filter 420, the first and second oil scraping portions 530 and 540 can remove oil from both sides of the filter 420, thereby improving the cleaning effect. In this embodiment, the first and second oil scraping portions 530 and 540 face each other in the thickness direction of the filter 420, thereby ensuring an effective clamping effect. The first and second oil scraping portions 530 and 540 exert a compressive force on each other, thereby improving the oil removal effect. In other optional 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 a squeezing force on the filter screen 420, the filter screen 420 will bend to a certain extent at the position of the first oil scraping portion 530 and the second oil scraping portion 540. When 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.

[0055] Furthermore, the guide structure further includes a second guide flange 521 disposed on at least one side of the second support portion 520 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 second guide flange 521 functions similarly to the first guide flange 512, and can guide and collect oil contamination.

[0056] 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 scraper assembly 500 can be adapted to filter screens 420 of varying thicknesses. Furthermore, the degree of tightness with which the first and second oil scraper portions 530, 540 grip the filter screen 420 can be adjusted. An appropriate degree of tightness ensures optimal cleaning performance while minimizing the difficulty in moving the filter screen 420.

[0057] like Figure 9As shown, the oil scraper assembly 500 further includes an adjustment member connected to the first support portion 511 and the second support portion 520. The adjustment member is used to adjust the distance between the first support portion 511 and the second support portion 520. In this embodiment, the adjustment member includes an adjustment bolt 522. Optionally, the adjustment bolt 522 passes through one of the first support portion 511 and the second support portion 520 and is threadedly engaged with the other of the first support portion 511 and the second support portion 520. In this embodiment, the adjustment bolt 522 passes through the first support portion 511 and is threadedly engaged with the second support portion 520. By tightening the adjustment bolt 522, the distance between the first support portion 511 and the second support portion 520 can be adjusted, thereby adjusting the tightness with which the first and second oil scraper portions 530 and 540 grip the filter screen 420. It should be noted that the adjusting bolts 522 should avoid the filter 420. For example, the lengths of the first support portion 511 and the second support portion 520 in the second direction are greater than the size of the filter 420 in the second direction. The two adjusting bolts 522 are connected and arranged at both ends of the first support portion 511 and the second support portion 520 in the second direction. The two adjusting bolts 522 are located on both sides of the filter 420 in the second direction.

[0058] 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 strength of scraping off oil stains; at the same time, the oil scraping part made of rubber is not easy to scratch the filter 420.

[0059] Figure 4 In the illustrated embodiment, the user manually pulls the filter 420 to move and remove the oil. In other optional embodiments, the movement of the filter 420 can also be achieved by electrical drive, thereby saving manpower. For example, the filter assembly 400 also includes a drive member 700 disposed on the smoke hood 100, which is used to drive the movement of the filter 420. Figure 10 This is a disassembled schematic diagram of the back side of a range hood in another embodiment of the present application; Figure 11 FIG. 4 is a schematic diagram of the assembly of the filter screen 420, the active support shaft 411 and the driving member 700 in one embodiment of the present application. Figure 10 and Figure 11As shown, in the present embodiment, the filter assembly 400 further comprises a driving member 700 arranged on the fume hood 100, and the driving member 700 is configured to drive the filter screen 420 to rotate. Specifically, at least one of the support shafts 410 is a driving support shaft 411, and a plurality of pawls 412 are protruded from the outer circumferential surface of the driving support shaft 411 and are arranged at intervals around the outer circumferential surface of the driving support shaft 411. A plurality of matching holes 423 are arranged at intervals in the circumferential direction of the filter screen 420, and the pawls 412 are movably matched with the matching holes 423. The driving member 700 is in transmission connection with the driving support shaft 411 and is configured to drive the driving support shaft 411 to rotate. In the present embodiment, the pawls 412 are in plug-in cooperation with the matching holes 423.

[0060] In the present embodiment, one of the two support shafts 410 is the driving support shaft 411, and the other support shaft 410 is fixed or acts as a driven shaft; in alternative embodiments, both of the support shafts 410 can be the driving support shafts 411. The two ends of the driving support shaft 411 are in rotational connection with the first flange 110 and the second flange 120, respectively, and one end surface of the driving support shaft 411 has an internal hexagonal hole for transmission connection with the output shaft of the driving member 700.

[0061] The driving member 700 is configured to drive the filter screen 420 to rotate, which not only saves manpower but also eliminates the need for the handle structure 424, so that the filter screen 420 can rotate on the two support shafts 410, and only one oil scraping assembly 500 is needed to clean the entire filter screen 420. For example, when the driving member 700 drives the filter screen 420 to rotate one round, each part of the filter screen 420 passes the oil scraping assembly 500 once, i.e., each part of the filter screen 420 is cleaned.

[0062] In summary, the oil fume extractor provided by the embodiment of the application comprises a smoke collecting hood 100, a filter assembly 400 and an oil scraping assembly 500. The smoke collecting hood 100 forms an air inlet 101. The filter assembly 400 is arranged at the air inlet 101 and comprises a filter screen 420. The oil scraping assembly 500 comprises a support 510, an oil scraping part and a guide structure arranged on the support 510. The support 510 is connected to the smoke collecting hood 100. The oil scraping part abuts against the filter screen 420. The filter screen 420 slides relative to the oil scraping part. The guide structure is used to guide the oil stains on the filter screen to the oil scraping part. When it is necessary to remove the oil stains accumulated on the filter screen 420, the oil scraping part can scrape off the oil stains on the filter screen 420 by only making the filter screen 420 slide relative to the oil scraping part. In this way, it is not necessary to remove the filter screen 420 for cleaning, and it is also not necessary for the user to hold a cleaning article (such as a cloth) to clean the filter screen 420. Furthermore, by arranging the guide structure, the oil stains on the filter screen 420 can be guided to the oil scraping part as much as possible, so that the oil stains are prevented from overflowing to other positions which cannot be scraped by the oil scraping part. Therefore, the oil fume extractor provided by the embodiment of the application can facilitate the cleaning of the filter screen 420, thereby facilitating the oil fume extractor to maintain a good oil fume suction effect. Further, since the filter screen 420 is flexible and annular, the oil fume is filtered by two layers of filter screens 420 when passing through the filter screen 420, so that the filtering effect is better. In addition, the filter screen 420 moves relative to the oil scraping assembly 500 in a rotating manner. This movement manner does not occupy extra space, and is beneficial to the miniaturization of the equipment.

[0063] The above merely provides a specific implementation manner of the application, but the protection scope of the application is not limited to this. Any modification or replacement within the technical scope disclosed by the application can be easily thought of by those skilled in the art, and should be covered within the protection scope of the application.

Claims

1. A range hood, characterized in that: The invention comprises a smoke hood (100), a filter assembly (400) and an oil scraping assembly (500), wherein the smoke hood (100) forms an air inlet (101), the filter assembly (400) is arranged at the air inlet (101), and the filter assembly (400) comprises a filter (420); the oil scraping assembly (500) comprises a bracket (510), an oil scraping portion and a guide structure arranged on the bracket (510), the bracket (510) is connected to the smoke hood (100), the oil scraping portion abuts against the filter (420), the filter (420) can slide relative to the oil scraping portion, and the guide structure is used to guide the oil on the filter (420) to the oil scraping portion.

2. The range hood according to claim 1, characterized in that: The filter assembly (400) further includes a handle structure (424), wherein the handle structure (424) is arranged on a side of the filter (420) facing the outside of the air inlet (101); Alternatively, the filter assembly (400) further comprises a driving member (700) disposed on the smoke collecting hood (100), wherein the driving member (700) is used to drive the filter screen (420) to move.

3. The range hood according to claim 1, characterized in that: The filter assembly (400) further includes two support shafts (410), the filter screen (420) is a flexible filter screen and is annular, the two support shafts (410) are connected to the smoke hood (100) and are spaced apart from each other, the filter screen (420) is sleeved on the two support shafts (410), and the filter screen (420) can rotate on the two support shafts (410) so that the oil scraping portion and the filter screen (420) slide relative to each other.

4. The range hood according to claim 3, characterized in that: The filter (420) comprises an inner straight section (421) and an outer straight section (422) located between the two support shafts (410) and spaced parallel to each other, wherein the inner straight section (421) is closer to the interior of the smoke hood (100) relative to the outer straight section (422); The oil scraping portion of the oil scraping assembly (500) abuts against one of the inner straight section (421) or the outer straight section (422); or, the range hood comprises at least two oil scraping assemblies (500), and the oil scraping portions of the two oil scraping assemblies (500) abut against the inner straight section (421) and the outer straight section (422), respectively.

5. The range hood according to any one of claims 1 to 4, characterized in that: The filter (420) can slide in a first direction relative to the oil scraping portion; the bracket (510) includes a first support portion (511), the first support portion (511) is spaced apart from the filter (420), the oil scraping portion includes a first oil scraping portion (530), the first oil scraping portion (530) is arranged on a side of the first support portion (511) facing the filter (420), and the guide structure includes a first guide flange (512) arranged on at least one side of the first support portion (511) 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 in a direction away from the filter (420).

6. The range hood according to claim 5, characterized in that: An oil drain groove (513) is provided on the first support portion (511), and the oil drain groove (513) passes through the first support portion (511) and exposes the filter screen (420).

7. The range hood according to claim 6, characterized in that: At least two first oil scraping portions (530) are provided on the first supporting portion (511), the at least two first oil scraping portions (530) are spaced apart in the first direction, and the oil drain groove (513) is located between two adjacent first oil scraping portions (530); And / or, two opposite edges of the oil drain groove (513) in the first direction are bent in a direction away from the filter screen (420) to form an oil blocking portion (514).

8. The range hood according to claim 5, characterized in that: The bracket (510) further includes a second supporting portion (520), and the oil scraping portion further includes a second oil scraping portion (540). The second supporting portion (520) is spaced apart from the first supporting portion (511), and a portion of the filter screen (420) is located between the first supporting portion (511) and the second supporting portion (520). The second oil scraping portion (540) is arranged on a side of the second supporting portion (520) facing the filter screen (420), and 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 guide structure further comprises a second guide flange (521) provided on at least one side of the second support portion (520) in the first direction, one side of the second guide flange (521) being connected to the second support portion (520), and the other side of the second guide flange (521) being bent in a direction away from the filter screen (420).

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

11. The range hood according to claim 10, characterized in that: The oil scraping assembly (500) further comprises an adjusting member connected to the first supporting portion (511) and the second supporting portion (520), and the adjusting member is used to adjust the distance between the first supporting portion (511) and the second supporting portion (520).

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