Range hood

Abstract

This invention relates to the field of kitchen appliances and provides a range hood, including a frame, a top-suction cavity, an air inlet component, and a guide component. A fan is housed within the frame. The top-suction cavity is connected to the frame and has a top-suction inlet divided into a front air inlet and a rear air inlet. The air inlet component has a first air inlet section and a second air inlet section. Along a first direction, the first air inlet section is adjacent to the front air inlet section, and the second air inlet section is adjacent to the rear air inlet section. The guide component is located on the air inlet side of the air inlet component and has an air intake structure and an oil-collecting structure. The air intake structure is arranged around the second air inlet section and guides airflow through the guide component into the second air inlet section. The horizontal orthographic projection of the first air inlet section near the rear air inlet section along the first direction and the horizontal orthographic projection of the second air inlet section are both located within the horizontal orthographic projection of the oil-collecting structure. The guide component, which cooperates with the air inlet component, solves the oil dripping problem and improves the air intake layout, enhancing the smoke extraction effect and improving smoke extraction efficiency.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and more particularly to range hoods. Background Technology

[0002] The purpose of a range hood is to collect and expel cooking fumes from the kitchen. Its main working principle is to create an airflow by expelling air from the kitchen, which carries the cooking fumes along with the airflow, thereby collecting and expelling them.

[0003] The solution for improving the smoke extraction effect of the top suction section of existing range hoods (such as those with a front-to-back depth of 330mm) is to add an opening and closing smoke-gathering plate to the front end of the air intake of the top suction section to gather smoke and improve the smoke extraction effect.

[0004] However, in order to integrate the range hood into the cabinet, some range hoods do not have an opening and closing smoke-gathering plate at the front of the air intake of the top suction section. Although the lack of an opening and closing design improves the aesthetics, when the exhaust pipe is under high back pressure, some oil fumes will leak and escape from the front of the air intake of the top suction section, that is, the front of the forehead, which will affect the kitchen air quality and user experience.

[0005] In related technologies, although the position of the air intake structure, such as the air intake mesh, of the top suction part is moved closer to the front end of the air intake to solve the problem of oil fume leakage and escape at the front end of the air intake, the following problems still exist: First, the lateral distance between the end position of the air intake mesh near the rear end of the top suction part and the oil cup is too large, which causes the smoke to condense at the end of the mesh and not be able to flow into the oil cup in time, forming oil dripping; Second, the design of the rear end structure of the air intake of the top suction part is not good, and the oil fume is easy to leak and escape outward in the left and right direction, reducing the smoking effect. Summary of the Invention

[0006] This invention aims to solve the technical problems existing in related technologies. To this end, this invention proposes a range hood that improves the problem of oil dripping at the front air intake and the rear air intake layout, thereby enhancing smoke extraction efficiency.

[0007] A range hood according to an embodiment of the present invention includes: The frame contains a fan; A top suction cavity is provided on one side of the frame. The top suction cavity is connected to the frame. The top suction cavity is provided with a top suction smoke inlet. The top suction smoke inlet is divided into an air inlet front end and an air inlet rear end along a first direction. An air intake component is provided in the top suction cavity. The air intake component has a first air intake section and a second air intake section in the area corresponding to the top suction smoke inlet. Along the first direction, the first air intake section is adjacent to the front end of the air intake, and the second air intake section is adjacent to the rear end of the air intake. A flow guide is provided on the air intake side of the air intake component. The flow guide is provided with an air inlet structure and an oil-bearing structure. The air inlet structure is arranged around the second air intake section. The air inlet structure is used to guide the airflow through the flow guide and into the second air intake section. The horizontal orthographic projection of the first air intake section near the rear end of the air intake section along the first direction and the horizontal orthographic projection of the second air intake section are both located within the horizontal orthographic projection of the oil-bearing structure.

[0008] According to an embodiment of the present invention, the range hood is equipped with an air intake component, and the first air intake section and the second air intake section are arranged sequentially along the first direction from the front end of the air intake to the rear end of the air intake to form a directional airflow channel, which promotes the orderly entry of oil fumes into the top suction cavity, thereby effectively suppressing oil fume leakage.

[0009] Meanwhile, by providing a guide component that works in conjunction with the air intake component, the guide component solves the problem of oil dripping from the end of the front air intake section, i.e., the first air intake section, and improves the air intake layout of the second air intake section. Specifically, the horizontal orthographic projection of the edge of the first air intake section near the rear end along the first direction is located within the horizontal orthographic projection of the oil-receiving structure, thereby receiving the oil dripping from one end of the first air intake section. In addition, the air intake structure of the guide component is arranged around the second air intake section, which can draw in the smoke from the rear end of the air intake from multiple directions, which helps to prevent the range hood from leaking outwards, and at the same time increases the air intake speed of the second air intake section, enhances the smoke extraction effect, and improves the smoke collection efficiency.

[0010] According to one embodiment of the present invention, the flow guide is provided with a flow guide groove, the flow guide groove is provided with a vent opening, the vent opening is arranged toward the air inlet and communicates with the second air inlet; The air inlet structure and the oil-bearing structure are distributed on different walls of the guide channel. The air inlet structure is arranged around the vent opening, and the oil-bearing structure is arranged opposite to the vent opening.

[0011] According to one embodiment of the present invention, the guide channel includes a guide bottom wall and a guide peripheral side wall, the guide peripheral side wall being fixedly connected to the air intake component; Along the second direction, the peripheral sidewall of the guide is fixedly connected to the periphery of the bottom wall of the guide and protrudes towards the air inlet, and the ventilation opening is formed on the side of the peripheral sidewall of the guide away from the bottom wall of the guide. The air inlet structure is located on the peripheral side wall of the guide, and the oil-bearing structure is located on the bottom wall of the guide. The first direction and the second direction are set at an angle.

[0012] According to one embodiment of the present invention, the oil-bearing structure is formed on the inner wall surface of the guide bottom wall facing the air intake.

[0013] According to one embodiment of the present invention, the air inlet structure includes a first air inlet portion and two second air inlet portions, and the guide peripheral sidewall includes: A first sidewall, along a first direction, is located near the air intake front end; Two second sidewalls are fixedly connected to the air intake component. Along a third direction, the two second sidewalls are located on opposite sides of the first sidewall and are connected to the first sidewall. The first sidewall is provided with the first air inlet, and each of the two second sidewalls is provided with a second air inlet. The first direction is set at an angle to the third direction.

[0014] According to one embodiment of the present invention, along a first direction, a clearance recess is provided on one end of the second sidewall facing the air intake front end, and the clearance recess is connected to the second air intake portion; Wherein, along the third direction, the avoidance recess is arranged corresponding to the edge of the first air intake near the rear end of the air intake along the first direction.

[0015] According to one embodiment of the present invention, the flow guide peripheral wall further includes a third side wall, the third side wall being arranged opposite to the first side wall, the third side wall being provided with a plurality of oil discharge portions, and the oil discharge portions being connected to the flow guide bottom wall.

[0016] According to one embodiment of the present invention, along a first direction, the air intake component includes a mounting wall, the mounting wall is disposed in a region near the rear end of the air intake, the mounting wall is provided with a mounting hole, and the oil discharge portion is an oil discharge protrusion that is inserted and fitted into the mounting hole.

[0017] According to one embodiment of the present invention, the flow guide has a first width L1 along a first direction; The air intake component includes an air intake wall along a first direction, from the front end of the air intake to the rear end of the air intake. The air intake wall is provided with a first air intake portion and a second air intake portion. The area on the air intake wall where the first air intake portion and the second air intake portion are provided has a second width L2 along the first direction. The ratio of the first width L1 to the second width L2 ranges from 0.5 to 0.8.

[0018] According to one embodiment of the present invention, the first air intake has a third width L3 along a first direction, and the second air intake has a fourth width L4 along the first direction. Wherein, the separation distance D1 between the first air intake and the second air intake along the first direction satisfies: D1=k1×(L3-L4), where the value of k1 ranges from 0.2 to 0.4.

[0019] According to one embodiment of the present invention, along a first direction, the fan has a first air inlet surface and a second air inlet surface, wherein the flow area of ​​the air inlet region of the second air inlet surface is greater than the flow area of ​​the air inlet region of the first air inlet surface; The range hood also includes: A side-suction cavity is provided on the side of the top-suction cavity facing away from the frame. The side-suction cavity is connected to the top-suction cavity, and the side-suction cavity is provided with a side-suction smoke inlet. A flow divider is disposed in the top suction cavity. One side of the flow divider along the first direction forms a first flow channel between it and the wall of the top suction cavity, and the other side of the flow divider along the first direction forms a second flow channel between it and the second air inlet surface. The first flow channel is used to guide the gas flowing through the communication area between the top suction cavity and the side suction cavity to the air intake area of ​​the second air intake surface, and the second flow channel is used to guide at least part of the gas flowing through the top suction smoke inlet to the air intake area of ​​the second air intake surface; In the first direction, the flow area of ​​the first flow channel is greater than that of the second flow channel.

[0020] According to one embodiment of the present invention, the orthographic projection of the diverter in a vertical plane along a first direction covers the distance between the fan and the air inlet in a second direction.

[0021] According to one embodiment of the present invention, the first flow channel has a width along a first direction, and along a second direction, from a position away from to a position close to the fan, the width of the first flow channel generally increases.

[0022] According to one embodiment of the present invention, the flow divider and the air inlet have a fourth spacing L8 along a second direction that allows gas to pass through.

[0023] According to one embodiment of the present invention, the ratio of the smoke inlet area of ​​the top smoke inlet to the side smoke inlet is in the range of 0.45 to 0.85.

[0024] According to one embodiment of the present invention, the range hood further includes an opening and closing cover plate, which is used to open or close the side suction inlet; The opening and closing cover is configured to be slidably or rotatably connected to the side suction cavity.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

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

[0027] Figure 1 This is one of the cross-sectional schematic diagrams of the range hood provided in the embodiment of the present invention, wherein the side suction inlet is in the open state.

[0028] Figure 2 This is a second cross-sectional schematic diagram of the range hood provided in an embodiment of the present invention, wherein the side suction inlet is in the open state.

[0029] Figure 3 yes Figure 2 Enlarged schematic diagram of the structure at point E.

[0030] Figure 4 This is one of the assembly diagrams of the air intake component, air guide component, and air diversion component of the range hood provided in the embodiments of the present invention.

[0031] Figure 5 This is the second assembly diagram of the air intake component, air guide component, and air diversion component of the range hood provided in this embodiment of the invention.

[0032] Figure 6 This is an exploded view of the air intake component, air guide component, and air diversion component of the range hood provided in the embodiment of the present invention.

[0033] Figure 7 This is the third cross-sectional schematic diagram of the range hood provided in the embodiment of the present invention.

[0034] Figure 8 This is one of the overall structural schematic diagrams of the range hood provided in the embodiments of the present invention, wherein the side suction inlet is in a closed state.

[0035] Figure 9 This is the second schematic diagram of the overall structure of the range hood provided in the embodiment of the present invention, wherein the side suction inlet is in the open state.

[0036] Figure label: 100. Frame; 110. Oil guide nozzle; 200, Fan; 210, First air inlet surface; 220, Second air inlet surface; 300, Top suction cavity; 300a, Top suction windward wall; 300b, Top suction leeward wall; 310, Top suction smoke inlet; 311, Front end of air inlet; 312, Rear end of air inlet; 400, Air intake component; 411, First air intake section; 412, Second air intake section; 410, Air intake wall; 420, Mounting wall; 421, Mounting socket; 500, Guide component; 510, Air inlet structure; 511, First air inlet; 512, Second air inlet; 520, Oil receiving structure; 530, Guide groove; 531, Guide bottom wall; 532, Guide peripheral side wall; 532a, First side wall; 532b, Second side wall; 532b1, Clearance recess; 532c, Third side wall; 532c1, Oil discharge section; 600. Side-suction cavity; 610. Side-suction smoke inlet; 700, Diverter; 700a, First end; 700b, Second end; 710, First plate wall; 720, Inclined plate wall; 730, Second plate wall; 740, Snap-fit ​​recess; 800, oil cup; 900, opening and closing cover; L1, first width; L2, second width; L3, third width; L4, fourth width; L5, first spacing; L6, second spacing; L7, third spacing; L8, fourth spacing; A. First flow channel; B. Second flow channel. Detailed Implementation

[0037] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0038] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention 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. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0040] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] It should be noted that the user's usage scenarios include idling, light cooking, or stir-frying. Idling can be understood as slow cooking, light cooking can be understood as steaming, and stir-frying can be understood as stir-frying over high heat. The amount of oil fumes produced during idling and light cooking is relatively small, while the amount of oil fumes produced during stir-frying is relatively large. The range hood's working state can be switched according to the scenario.

[0043] The following is combined with Figures 1 to 9 The range hood of the present invention will be described.

[0044] Understandably, please refer to Figure 1 and Figure 2 In some examples of the present invention, the range hood includes a frame 100, a fan 200, a top suction cavity 300, an air inlet 400, a flow guide 500, a side suction cavity 600, a flow divider 700, an oil cup 800, and an opening and closing cover 900.

[0045] It should be noted that this is understandable and can be referenced. Figure 1In some examples of the present invention, the range hood has a first direction, a second direction, and a third direction. The first direction is set at an angle to the second direction and the third direction. Specifically, the first direction is the front-back direction, which can also be understood as the thickness, width, or depth direction of the range hood in the horizontal direction; the second direction is the up-down direction, which can also be understood as the height direction of the range hood in the vertical direction; and the third direction is the left-right direction, which can also be understood as the length direction of the range hood in the horizontal direction.

[0046] Understandably, please refer to Figure 1 and Figure 2 In some examples of the present invention, a fan 200 is provided inside the frame 100, the top suction cavity 300 is connected to the frame 100, and the side suction cavity 600 is connected to the top suction cavity 300. The top suction cavity 300 is located on one side of the frame 100, that is, the top suction cavity 300 is located on the lower side of the frame 100; the side suction cavity 600 is located on the side of the top suction cavity 300 away from the frame 100, that is, the lower side; and the oil cup 800 is located at the bottom of the side suction cavity 600, that is, the oil cup 800 is located on the lower side of the side suction cavity 600.

[0047] Understandably, please refer to Figure 1 and Figure 2 In some examples of the present invention, the top suction cavity 300 is provided with a top suction smoke inlet 310, which is divided into an air intake front end 311 and an air intake rear end 312 along the first direction. That is, along the front-back direction, the top suction smoke inlet 310 is divided into an air intake front end 311 and an air intake rear end 312.

[0048] In some examples, the air intake 400 is provided in the top suction cavity 300. The air intake 400 is provided with a first air intake 411 and a second air intake 412 in the area corresponding to the top suction smoke inlet 310. Along the first direction, the first air intake 411 is adjacent to the front air intake 311, and the second air intake 412 is adjacent to the rear air intake 312. That is, the first air intake 411 serves as the front air intake and the second air intake 412 serves as the rear air intake.

[0049] In some examples, the guide 500 is disposed on the air intake side of the air intake 400. The guide 500 is provided with an air inlet structure 510 and an oil-bearing structure 520. The air inlet structure 510 is arranged around the second air intake 412 and is used to guide the airflow through the guide 500 into the second air intake 412. The horizontal orthographic projection of the first air intake 411 along the first direction near the edge of the air intake rear end 312 and the horizontal orthographic projection of the second air intake 412 are both located within the horizontal orthographic projection of the oil-bearing structure 520.

[0050] With the above configuration, by providing an air intake component 400, the first air intake section 411 and the second air intake section 412 are arranged sequentially along the first direction from the front end 311 to the rear end 312 of the air intake to form a directional airflow channel, which promotes the orderly entry of oil fumes into the top suction cavity 300, thereby effectively suppressing oil fume leakage.

[0051] Meanwhile, by providing a guide member 500 that cooperates with the air intake member 400, the guide member 500 solves the problem of oil dripping at the end of the front air intake part, i.e., the first air intake part 411, and improves the air intake layout of the second air intake part 412. That is, the horizontal orthographic projection of the edge of the first air intake part 411 near the rear end 312 along the first direction is located within the horizontal orthographic projection of the oil-receiving structure 520, thereby receiving the oil dripping from the edge, i.e., the end, of the first air intake part 411; in addition, the air intake structure 510 of the guide member 500 is arranged around the second air intake part 412, which can draw the smoke from the rear end 312 of the air intake from multiple directions, which helps to prevent the range hood from leaking outwards, and at the same time increases the air intake speed of the second air intake part 412, enhances the smoke extraction effect, and improves the smoke collection efficiency.

[0052] Specifically, please refer to Figure 4 In some examples of the present invention, the guide member 500 is provided with a guide groove 530, the guide groove 530 is provided with a vent opening, the vent opening is arranged toward the air inlet member 400 and communicates with the second air inlet 412; the air inlet structure 510 and the oil-bearing structure 520 are distributed on different walls of the guide groove 530, the air inlet structure 510 is arranged around the vent opening, and the oil-bearing structure 520 is arranged opposite to the vent opening.

[0053] With the above configuration, the flue gas enters the guide groove 530 through the air inlet structure 510 and passes through the second air inlet 412 along the air vent to enter the frame 100. During the above process, the noise sound waves generated by the high-speed airflow will be directed to the inner wall surface of the guide groove 530 of the guide component 500. The inner wall surface reflects part of it back into the airflow, interfering with and canceling out the subsequent sound waves, thereby reducing the sound energy. At the same time, the inner wall surface will also absorb some sound energy, further reducing the noise intensity reflected to the outside, which means that the semi-anechoic noise and operating noise of the whole machine can be reduced.

[0054] In addition, the air inlet structure 510 and the oil receiving structure 520 are respectively arranged on different walls of the guide channel 530. The air inlet structure 510 surrounds the vent opening, and the oil receiving structure 520 is opposite to the vent opening. The above arrangement is conducive to the smooth entry and uniform dispersion of gas, while enabling the oil to be effectively received and separated, improving the efficiency of guide and oil and gas treatment, reducing mutual interference, and enhancing the overall operational stability.

[0055] More specifically, please refer to Figure 4In some examples of the present invention, the guide groove 530 includes a guide bottom wall 531 and a guide peripheral side wall 532, the guide peripheral side wall 532 being fixedly connected to the air inlet 400; along the second direction, the guide peripheral side wall 532 is fixedly connected to the periphery of the guide bottom wall 531 and extends protruding toward the air inlet 400, and a ventilation opening is formed on the side of the guide peripheral side wall 532 opposite to the guide bottom wall 531; wherein, the air inlet structure 510 is provided on the guide peripheral side wall 532, and the oil receiving structure 520 is provided on the guide bottom wall 531.

[0056] Based on the above configuration, it can be understood that the upward protrusion of the guide sidewall 532 makes the guide groove 530 form a semi-enclosed space surrounded by the guide bottom wall 531 and the guide sidewall 532, which can effectively guide the airflow along a specific path, reduce diffusion and turbulence, and at the same time improve the blocking and collection effect of oil, allowing the smoke chamber to be more fully separated when flowing through the guide groove 530, thereby improving the overall guiding and oil collection efficiency.

[0057] It should be noted that, please refer to Figure 4 In some examples of the present invention, the guide member 500 is a condenser plate, which is formed by bending and forming the bottom wall 531 and the peripheral side wall 532 of the guide groove 530.

[0058] It is understood that in some examples of the present invention, the air intake structure 510 includes a first air intake portion 511 and two second air intake portions 512, and the guide peripheral sidewall 532 includes a first sidewall 532a and two second sidewalls 532b. Along the first direction, the first sidewall 532a is close to the air intake front end 311; the two second sidewalls 532b are fixedly connected to the air intake member 400. Along the third direction, the two second sidewalls 532b are located on opposite sides of the first sidewall 532a and are connected to the first sidewall 532a; wherein, the first sidewall 532a is provided with the first air intake portion 511, and each of the two second sidewalls 532b is provided with a second air intake portion 512.

[0059] With the above structure, a first air inlet 511 is provided through the first side wall 532a, and second side walls 532b are respectively provided on both sides of the first side wall 532a, that is, the left and right sides. Each of the second side walls 532b is provided with a second air inlet 512, forming a symmetrical auxiliary air inlet, expanding the coverage of the smoke, reducing the dead angle of the airflow, forming a three-sided ring smoke collection, optimizing the air intake distribution, improving the airflow intensity and coverage density of the smoke collection area, reducing the escape of oil fumes, and enhancing the smoke collection effect.

[0060] Specifically, please refer to Figure 4In some examples of the present invention, the first air inlet 511 is formed by the downward recess of the first sidewall 532a, and the second air inlet 512 passes through the air inlet hole provided in the second sidewall 532b; there may be one or two air inlets. In this embodiment, the second sidewall 532b has two air inlets in the front-back direction.

[0061] Of course, in other embodiments, the first air inlet 511 and the second air inlet 512 may also adopt other forms of air inlets. For example, the first air inlet 511 may be changed to an air inlet through hole that penetrates the first side wall 532a, or the second air inlet 512 may be set as an air inlet opening that is recessed downward on the second side wall 532b, or both may be a combination of recessed openings or through holes. The specific design can be flexibly adjusted according to the actual airflow requirements and spatial layout to achieve design flexibility and adaptability.

[0062] Understandably, please refer to Figure 4 In some examples of the present invention, the oil-bearing structure 520 is formed on the inner wall surface of the guide bottom wall 531 facing the air intake 400.

[0063] With the above configuration, the oil-bearing structure 520 can accurately receive the oil dripping from the end edge of the first air intake 411. The oil-bearing structure 520 has a clear design position and simple structure. The oil-bearing structure 520 is the inner wall of the guide bottom wall 531, which does not require complex assembly, reduces the number of parts and connection links, and improves the reliability of the structure.

[0064] Of course, in some other examples, the oil-bearing structure 520 may be an oil-collecting recess provided on the bottom wall 531, rather than the smooth inner wall surface of the guide wall 531.

[0065] Understandably, please refer to Figure 5 and Figure 6 In some examples of the present invention, along the first direction, a clearance recess 532b1 is provided on the second sidewall 532b at one end facing the air intake front end 311, and the clearance recess 532b1 is connected to the second air intake part 512; wherein, along the third direction, the clearance recess 532b1 and the first air intake part 411 are arranged correspondingly to the edge of the first air intake part 411 near the air intake rear end 312 along the first direction.

[0066] This can be understood as follows: a recessed clearance recess 532b1 is provided at the front end of the second side wall 532b. Even if the orthographic projection of the end of the first air intake 411 on the horizontal plane is completely within the orthographic projection range of the guide 500 on the horizontal plane, the smoke from the range hood in the third direction (i.e., the left and right directions) can still flow smoothly into the first air intake 411 through the clearance recess 532b1 and be further guided into the frame 100, making full use of the air intake range of the first air intake 411. At the same time, the clearance recess 532b1 only needs to be partially recessed at the front end of the second side wall 532b, which is convenient to process, does not add extra parts, is low in cost and easy to maintain.

[0067] Specifically, please refer to Figures 4 to 6 In some examples of the present invention, the flow guide peripheral sidewall 532 further includes a third sidewall 532c, which is arranged opposite to the first sidewall 532a. The third sidewall 532c is provided with a plurality of oil draining portions 532c1, which are connected to the flow guide bottom wall 531.

[0068] It should be noted that the aforementioned "several oil drain sections 532c1" can be understood as one or more oil drain sections 532c1, where "more" can be understood as two or more (including two). In this embodiment, the number of oil drain sections 532c1 is described as two.

[0069] With the above configuration, the oil discharge section 532c1 provided on the third side wall 532c provides a directional discharge channel for the oil in the guide channel 530. The oil can naturally converge along the bottom wall 531 of the guide channel and flow into the oil discharge section 532c1, achieving efficient and controllable oil discharge. This not only avoids the accumulation of oil in the guide channel 530, which may cause pollution or functional interference, but also simplifies the oil discharge structure, reduces maintenance difficulty, and improves cleanliness and operational reliability.

[0070] Understandably, please refer to Figures 4 to 6 In some examples of the present invention, along the first direction, the air intake 400 includes an air intake wall 410 and a mounting wall 420 connected to the air intake wall 410. The air intake wall 410 is arranged along the first direction, that is, the front-to-back direction. The mounting wall 420 is arranged vertically and is located in the region near the rear end 312 of the air intake.

[0071] It is understood that in some examples of the present invention, the mounting wall 420 is provided with a mounting hole 421, and the oil draining part 532c1 is an oil draining protrusion that is inserted into the mounting hole 421.

[0072] Through the above arrangement, the design of the mounting hole 421 fully considers the structural compatibility with the oil drain nozzle. After the oil drain nozzle is inserted into the mounting hole 421, the two form a tight fit, which not only ensures the stability of the mechanical connection between the guide component 500 and the mounting wall 420 of the air intake component 400, but also achieves smooth connection of the oil circuit. When the oil generated during cooking is separated, it flows along the bottom wall 531 of the guide and into the oil drain nozzle, and is finally guided to the preset oil collection position, such as the oil collection tank or oil cup 800.

[0073] It should be noted that in this embodiment, the transverse cross-sectional shape of the oil discharge part 532c1 is a trapezoidal structure, and the width of the front end of the oil discharge part 532c1 is greater than the width of the rear end. Of course, the transverse cross-sectional shape of the oil discharge part 532c1 can also be a rectangle, etc., and no specific limitation is made here.

[0074] Understandably, please refer to Figure 5 In some examples of the present invention, the guide member 500 has a first width L1 along a first direction; along the first direction, from the air intake front end 311 to the air intake rear end 312, the air intake wall 410 is provided with a first air intake portion 411 and a second air intake portion 412, and the area on the air intake wall 410 provided with the first air intake portion 411 and the second air intake portion 412 has a second width L2 along the first direction; wherein, the ratio of the first width L1 to the second width L2 ranges from 0.5 to 0.8.

[0075] Using the above settings, for example, the ratio of the first width to the second width can be in the range of 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, or 0.8. Of course, the ratio of the first width L1 to the second width L2 can also be any value within the range of 0.5 to 0.8, without specific limitations. It can be understood that, on the basis of optimizing the smoke extraction effect, the fine control of the air intake process is simultaneously realized. Along the airflow path from the front end 311 to the rear end 312 of the air intake, the air intake characteristics (such as flow velocity matching and flow field uniformity) of the first air intake section 411 and the second air intake section 412 are specifically optimized, which not only enhances the smoke capture efficiency and air intake utilization rate, but also effectively reduces the noise radiation caused by airflow disturbance, ultimately achieving a significant reduction in the overall noise level of the machine.

[0076] It should also be noted that in some examples of the present invention, the air guide 500 is detachably connected to the air intake 400, such as by a snap-fit ​​structure, bolts, etc., so as to facilitate the disassembly and cleaning of the air guide 500.

[0077] Specifically, please refer to Figure 1 and Figure 2In some examples of the present invention, along a first direction, the fan 200 has a first air inlet surface 210 and a second air inlet surface 220; along a second direction, the first air inlet surface 210 is used to connect to the first air inlet section 411, and the second air inlet surface 220 is used to connect to the second air inlet section 412.

[0078] With the above configuration, the first air inlet surface 210 is located on the front side of the fan 200, and the second air inlet surface 220 is located on the rear side of the fan 200. The first air inlet 411 and the second air inlet 412 can match the front and rear air intakes of the fan 200, which can help prevent oil fume leakage.

[0079] More specifically, please refer to Figure 5 In this embodiment, the first air intake 411 has a third width L3 along the first direction, and the second air intake 412 has a fourth width L4 along the first direction; wherein, the separation distance D1 between the first air intake 411 and the second air intake 412 along the first direction satisfies: D1=k1×(L3-L4), where the value of k1 ranges from 0.2 to 0.4.

[0080] With the above settings, the value of k1 can be 0.2, 0.25, 0.3, 0.35, or 0.4. Of course, the value of k1 can also be any value within the range of 0.2 to 0.4, without specific restrictions. It can be understood that by multiplying the width difference between the first air intake 411 and the second air intake 412 by the value of k1 to determine the separation distance D1, the flow rate and flow field of the two air intakes can be further optimized separately, making the air intake on both sides of the fan 200 more uniform, reducing resistance, improving overall air intake efficiency and operational stability, enhancing the flexibility of air volume ratio adjustment, and improving the uniformity and response characteristics of gas distribution.

[0081] It should be noted that in this embodiment, the flow area of ​​the air intake region of the second air intake surface 220 is larger than that of the air intake region of the first air intake surface 210. Therefore, it can be understood that the first air intake surface 210 is provided with a secondary air intake, while the second air intake surface 220 is provided with a main air intake. The main air intake is set towards the rear end 312 of the air intake, while the secondary air intake is set towards the front end 311 of the air intake, which is beneficial to reduce noise.

[0082] Understandably, please refer to Figure 1 and Figure 2 In some examples of the present invention, the side suction cavity 600 is provided with a side suction smoke inlet 610, which is used to draw in smoke.

[0083] It is understandable that, compared to the position of the top suction inlet 310 of the top suction cavity 300, the position of the side suction inlet 610 of the side suction cavity 600 is closer to the smoke source in the cooking area. Based on the above, in order to extract the fumes from the cooking area more quickly and improve the smoke extraction efficiency, in some examples of the present invention, a diverter 700 is configured to distribute the airflow of the second air inlet surface 220 of the fan 200, that is, the main airflow.

[0084] Specifically, please refer to Figure 1 , Figure 2 and Figure 3 In some examples of the present invention, a diverter 700 is disposed within the top suction cavity 300. A first flow channel A is formed between one side of the diverter 700 along the first direction and the wall of the top suction cavity 300. The first flow channel A is used to guide the gas flowing through the communication area between the top suction cavity 300 and the side suction cavity 600 to the air intake area of ​​the second air intake surface 220. A second flow channel B is formed between the other side of the diverter 700 along the first direction and the second air intake surface 220. The second flow channel B is used to guide at least a portion of the gas flowing through the top suction inlet 310 to the air intake area of ​​the second air intake surface 220. In this case, along the first direction, the flow area of ​​the first flow channel A is greater than the flow area of ​​the second flow channel B.

[0085] With the above configuration, the main airflow of the second air inlet surface 220 on the fan 200 is distributed through the diverter 700. In order to extract the smoke from the cooking area more quickly and improve the smoke extraction efficiency, the flow areas of the first flow channel A and the second flow channel B are set. Compared with the second flow channel B, the flow area of ​​the first flow channel A is larger. This allows the second air inlet surface 220 on the fan 200, which serves as the main air intake, to mainly extract the gas from the side suction cavity 600 through the first flow channel A. The larger flow area of ​​the first flow channel A is used to increase the flow rate and volume of the smoke in this path, thereby enabling faster extraction of the smoke from the cooking area and improving the smoke extraction efficiency.

[0086] It should be noted that, please refer to Figure 2 In some examples of the present invention, the top suction cavity 300 includes a top suction windward wall 300a and a top suction leeward wall 300b disposed opposite to each other along a first direction, that is, the top suction windward wall 300a is located on the front side, the top suction leeward wall 300b is located on the rear side, and the top suction smoke inlet 310 is located between the top suction windward wall 300a and the top suction leeward wall 300b.

[0087] Please refer to Figure 3 and Figure 4 In this embodiment, the diverter 700 has a first end 700a and a second end 700b along the second direction. The first end 700a is located at the end of the diverter 700 closest to the fan 200 along the second direction, and the second end 700b is located at the other end of the diverter 700 away from the fan 200.

[0088] It is understood that, based on the above, in some examples of the present invention, the first end 700a is located between the top suction lee wall 300b and the second air inlet surface 220; the first flow channel A has a first spacing L5 along the first direction, the first spacing L5 is formed between one side of the first end 700a and the top suction lee wall 300b, and the second flow channel B has a second spacing L6 along the first direction, the second spacing L6 is formed between the opposite side of the first end 700a and the second air inlet surface 220; wherein, the first spacing L5 is greater than the second spacing L6, and the first direction and the second direction are set at an angle.

[0089] With the above configuration, since the first gap L5 is larger than the second gap L6, the fan 200 prioritizes drawing gas from the first flow channel A during operation. This ensures that the fumes from the cooking area can be efficiently and quickly discharged through a path with a large flow area, significantly improving smoke extraction efficiency. Simultaneously, the larger first gap L5 also plays a role in rectifying and stabilizing the airflow, making the airflow entering the fan 200 smoother and effectively reducing noise caused by sudden airflow changes. This achieves the dual advantages of efficient smoke extraction and low-noise operation.

[0090] Specifically, please refer to Figure 3 In some examples of the present invention, there is a third distance L7 between the second air inlet surface 220 and the top suction back wall 300b along the first direction; wherein, L7 = k2 × L6, the value of k2 is in the range of 0.7 to 0.8, and it can be understood that the product of k2 and L6 is L7.

[0091] Using the above design, the value of k2 can be 0.7, 0.75, or 0.8. Of course, the value of k2 can also be any value within the range of 0.7 to 0.8; no specific restriction is imposed here. It can be understood that a reasonable third gap design helps to regulate the velocity and flow rate of the flue gas when it enters the second air inlet surface 220, reducing eddies and thus improving the smoke extraction effect.

[0092] Reference Figure 2 In some examples of the present invention, in order to avoid the first end 700a blocking the air intake path of the second air intake surface 220, along the second direction, the end of the diverter 700 near the fan 200 is lower than the lowest position of the air intake area of ​​the second air intake surface 220, that is, the first end 700a is lower than the lowest position of the air intake area of ​​the second air intake surface 220.

[0093] For example, the distance between the lowest position of the air inlet area of ​​the first end 700a and the second air inlet surface 220 along the second direction is D2; the impeller diameter of the fan 200 is d, where D2 = k3 × d, the value of k3 ranges from 0.15 to 0.35, and it can be understood that the product of k3 and d is D2.

[0094] With the above design, the value of k3 can be 0.15, 0.2, 0.25, 0.3, or 0.35. Of course, the value of k3 can also be any value within the range of 0.15 to 0.35, without specific restrictions. It can be understood that the above design prevents the first end 700a from obstructing the air intake area of ​​the second air intake surface 220, ensuring the smooth flow of flue gas into the fan 200. Based on this, the second air intake surface 220 of the fan 200 can simultaneously extract flue gas through the first flow channel A and the second flow channel B, realizing multi-channel coordinated operation, optimizing the smoke extraction effect, and improving the noise radiation of the fan 200 system within the entire unit, thus reducing noise.

[0095] Understandably, referring to Figure 2 and Figure 3 In some examples of the present invention, the first flow channel A has a width along a first direction, and along a second direction, from a position away from to a position close to the fan 200, the width of the first flow channel A generally increases.

[0096] With the above settings, the width of the first flow channel A generally increases from the position away from the fan 200 to the position near the fan 200. That is, from bottom to top, the width of the first flow channel A generally increases, thus forming a gradually expanding structure, which helps to guide the airflow to diffuse smoothly, reduce local resistance, thereby improving smoke extraction efficiency and acoustic performance.

[0097] For example, in this embodiment, the longitudinal cross-sectional shape of the first flow channel A along the second direction is trapezoidal. Of course, the longitudinal cross-sectional shape of the first flow channel A along the second direction can also be understood as trumpet-shaped, etc., without specific limitations.

[0098] Understandably, please refer to Figure 3 In some examples of the present invention, the orthographic projection of the diverter 700 on the vertical plane along the first direction covers the distance between the fan 200 and the air inlet 400 in the second direction.

[0099] With the above configuration, the diverter 700 not only serves as a guide, allowing the flue gas entering through the side suction inlet 610 to flow upward along the diverter 700 or the first flow channel A to the air intake area of ​​the second air intake surface 220; at the same time, the diverter 700 also serves as a shield and block, preventing the flue gas path in the first flow channel A from interfering with the flue gas path between the air intake component 400 and the fan 200, which helps to reduce eddies, thereby improving smoke extraction efficiency and acoustic performance.

[0100] It is understandable that the width of the first flow channel A generally increases from bottom to top. In order to make reasonable use of the depth in the first direction, that is, the front-to-back direction, in this embodiment, the projection of the flow divider 700 on the horizontal plane and the projection of the air intake 400 on the horizontal plane at least partially overlap.

[0101] Further, please refer to Figure 3 In order to prevent the sidewall of the diverter 700 from blocking the air outlet of the second air inlet 412 of the air inlet 400 in the upward direction, in some examples of the present invention, the diverter 700 and the air inlet 400 have a fourth distance L8 that is in the second direction and allows gas to pass through. It can be understood that the portion of the diverter 700 corresponding to the overlapping area and the air inlet 400 have a fourth distance L8 that is in the vertical direction and allows gas to pass through.

[0102] For example, the fourth gap L8 between the opposite sides of the splitter 700 and the intake 400 in the vertical direction is not less than 11mm. This can be understood as optimizing the smoke extraction effect and reducing noise by reasonably designing the fourth gap.

[0103] Understandably, referring to Figure 7 In some examples of the present invention, along the first direction, the second end 700b is located between the communicating region of the top suction cavity 300 and the side suction cavity 600 and the top suction inlet 310; wherein, the top suction cavity 300 has a length along the second direction, the length direction of the diverter 700 is arranged in the same direction as the second direction, and the length of the diverter 700 is equal to the length inside the top suction cavity 300.

[0104] With the above configuration, when viewed from above in the second direction, the diverter 700 divides the top suction cavity 300 into two areas arranged along the front and back. One area is the connecting area between the top suction cavity 300 and the side suction cavity 600, and the other area is where the top suction inlet 310 is arranged. This prevents the airflow flowing into the connecting area between the top suction cavity 300 and the side suction cavity 600 from flowing laterally to the position of the top suction inlet 310. The diverter 700 plays a blocking role.

[0105] Understandably, referring to Figures 4 to 6 In some examples of the present invention, the diverter 700 includes a first plate wall 710, an inclined plate wall 720, and a second plate wall 730. Along the second direction, from the top suction cavity 300 to the side suction cavity 600, the first plate wall 710, the inclined plate wall 720, and the second plate wall 730 are connected in sequence. The first plate wall 710 is fixedly connected to the top suction cavity 300, and at least one of the air intake 400 and the top suction cavity 300 is fixedly connected to the second plate wall 730. The inclined plate wall 720 is inclined along the first direction toward the location of the fan 200.

[0106] By including a first plate wall 710, a second plate wall 730, and an inclined plate wall 720 in the flow divider 700, it can be understood that the first plate wall 710 serves as the first end 700a, the second plate wall 730 serves as the second end 700b, and the inclined plate wall 720 serves as a transitional connection between the first plate wall 710 and the second plate wall 730. The inclined plate wall 720 is inclined towards the location of the fan 200 along the first direction, i.e., the front-to-back direction, achieving the effect of optimized airflow guidance and smooth spatial connection. The tilt angle guides the airflow to efficiently converge to the second air inlet surface 220 of the fan 200, reducing turbulence and energy loss; at the same time, the structural design of the transitional connection avoids the increase in resistance caused by sudden changes in airflow, improving the overall smoke extraction efficiency and stability.

[0107] It should be noted that in this embodiment, the shape of the diverter 700 can be understood as Z-shaped, but this is not specifically limited. The diverter 700 is formed by bending and forming a first plate wall 710, an inclined plate wall 720, and a second plate wall 730, respectively. The specific method of fixed connection can be snap-fit ​​fixing or bolt fixing. For example, the first plate wall 710 is fixedly connected to the top suction cavity 300 by a snap-fit ​​structure or bolts; at least one of the air intake 400 and the top suction cavity 300 is fixedly connected to the second plate wall 730. This can be understood as the air intake 400 being fixedly connected to the second plate wall 730 by a snap-fit ​​structure or bolts, or the top suction cavity 300 being fixedly connected to the second plate wall 730 by a snap-fit ​​structure or bolts. Of course, both the air intake 400 and the top suction cavity 300 can also be fixedly connected to the second plate wall 730 by a snap-fit ​​structure or bolts.

[0108] Specifically, in some examples of the present invention, both the air intake 400 and the top suction cavity 300 are fixedly connected to the second plate wall 730 to improve the connection stability of the diverter 700.

[0109] Reference Figure 1 In some examples of the present invention, in order to receive the oil dripping from the fan 200, the range hood includes an oil guide nozzle 110, which is fixedly connected to the outer wall of the fan 200. The oil guide nozzle 110 is used to receive and transport the oil dripping from the fan 200, effectively receiving and guiding the oil dripping from the fan 200, and preventing oil spillage.

[0110] It should be noted that the length of the oil guide nozzle 110 is usually set to be relatively long, so as to extend to a position close to the top suction leeward wall 300b, so that the oil can flow along the top suction leeward wall 300b to the position of the oil cup 800.

[0111] Understandably, referring to Figure 7 In this embodiment, the oil guide nozzle 110 is installed inside the frame 100, and the first end 700a of the diverter 700 extends into the frame 100.

[0112] In some examples of the present invention, the diverter 700 is provided with a snap-fit ​​recess 740, which engages with the oil guide nozzle 110 to prevent deformation due to the long length of the oil guide nozzle 110, thereby improving the overall structural strength and reliability.

[0113] It is understood that, in some examples of the present invention, the ratio of the smoke inlet area of ​​the top smoke inlet 310 to the side smoke inlet 610 ranges from 0.45 to 0.85.

[0114] With the above design, the ratio of the smoke intake area of ​​the top-mounted smoke inlet 310 to the side-mounted smoke inlet 610 can be 0.45, 0.5, 0.55, 0.6, 0.65, 0.75, 0.8, or 0.85. Of course, the ratio can also be any value within the range of 0.45 to 0.85; no specific limitation is imposed here. It can be understood that the above settings optimize the smoke extraction effect and help reduce overall noise.

[0115] Understandably, referring to Figure 8 and Figure 9 In some examples of the present invention, the range hood further includes an opening and closing cover 900 for opening or closing the side suction inlet 610; wherein the opening and closing cover is configured to be slidably connected or rotatably connected to the side suction cavity 600.

[0116] The hinged cover 900 and the side suction chamber 600 are connected by a sliding or rotating mechanism, allowing users to flexibly adjust the opening degree according to different cooking scenarios and smoke extraction needs. This design not only makes it easy to fully open during stir-frying to enhance suction power, but also allows for partial closing during resting or light cooking to maintain thermal efficiency and reduce smoke escape, thereby optimizing the smoke extraction effect and improving the convenience and adaptability of the user experience.

[0117] Finally, it should be noted that the above embodiments are only for illustrating the present invention and not for limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the protection scope of the present invention.

Claims

1. A range hood, characterized in that, include: The frame contains a fan; A top suction cavity is provided on one side of the frame. The top suction cavity is connected to the frame. The top suction cavity is provided with a top suction smoke inlet. The top suction smoke inlet is divided into an air inlet front end and an air inlet rear end along a first direction. An air intake component is provided in the top suction cavity. The air intake component has a first air intake section and a second air intake section in the area corresponding to the top suction smoke inlet. Along the first direction, the first air intake section is adjacent to the front end of the air intake, and the second air intake section is adjacent to the rear end of the air intake. A flow guide is provided on the air intake side of the air intake component. The flow guide is provided with an air inlet structure and an oil-bearing structure. The air inlet structure is arranged around the second air intake section. The air inlet structure is used to guide the airflow through the flow guide and into the second air intake section. The horizontal orthographic projection of the first air intake section near the rear end of the air intake section along the first direction and the horizontal orthographic projection of the second air intake section are both located within the horizontal orthographic projection of the oil-bearing structure.

2. The range hood according to claim 1, characterized in that, The flow guide is provided with a flow guide groove, the flow guide groove is provided with a vent opening, the vent opening is arranged facing the air inlet and is connected to the second air inlet; The air inlet structure and the oil-bearing structure are distributed on different walls of the guide channel. The air inlet structure is arranged around the vent opening, and the oil-bearing structure is arranged opposite to the vent opening.

3. The range hood according to claim 2, characterized in that, The guide channel includes a guide bottom wall and a guide peripheral side wall, and the guide peripheral side wall is fixedly connected to the air intake component; Along the second direction, the peripheral sidewall of the guide is fixedly connected to the periphery of the bottom wall of the guide and protrudes towards the air inlet, and the ventilation opening is formed on the side of the peripheral sidewall of the guide away from the bottom wall of the guide. The air inlet structure is located on the peripheral side wall of the guide, and the oil-bearing structure is located on the bottom wall of the guide. The first direction and the second direction are set at an angle.

4. The range hood according to claim 3, characterized in that, The oil-bearing structure is formed on the inner wall surface of the guide bottom wall facing the air intake component.

5. The range hood according to claim 3, characterized in that, The air inlet structure includes a first air inlet and two second air inlets, and the guide peripheral sidewall includes: A first sidewall, along a first direction, is located near the air intake front end; Two second sidewalls are fixedly connected to the air intake component. Along a third direction, the two second sidewalls are located on opposite sides of the first sidewall and are connected to the first sidewall. The first sidewall is provided with the first air inlet, and each of the two second sidewalls is provided with a second air inlet. The first direction is set at an angle to the third direction.

6. The range hood according to claim 5, characterized in that, Along the first direction, a clearance recess is provided on one end of the second sidewall facing the air intake front end, and the clearance recess is connected to the first air intake part; Wherein, along the third direction, the avoidance recess is arranged corresponding to the edge of the first air intake near the rear end of the air intake along the first direction.

7. The range hood according to claim 5, characterized in that, The guide peripheral wall also includes a third sidewall, which is arranged opposite to the first sidewall. The third sidewall is provided with a plurality of oil draining parts, which are connected to the guide bottom wall.

8. The range hood according to claim 7, characterized in that, Along the first direction, the air intake component includes a mounting wall, which is located near the rear end of the air intake. The mounting wall is provided with a mounting hole, and the oil discharge part is an oil discharge protrusion that is inserted and fitted into the mounting hole.

9. The range hood according to any one of claims 1 to 8, characterized in that, The flow guide has a first width L1 along a first direction; The air intake component includes an air intake wall along a first direction, from the front end of the air intake to the rear end of the air intake. The air intake wall is provided with a first air intake portion and a second air intake portion. The area on the air intake wall where the first air intake portion and the second air intake portion are provided has a second width L2 along the first direction. The ratio of the first width L1 to the second width L2 ranges from 0.5 to 0.

8.

10. The range hood according to any one of claims 1 to 8, characterized in that, The first air intake has a third width L3 along a first direction, and the second air intake has a fourth width L4 along the first direction. Wherein, the separation distance D1 between the first air intake and the second air intake along the first direction satisfies: D1=k1×(L3-L4), where the value of k1 ranges from 0.2 to 0.

4.

11. The range hood according to any one of claims 1 to 8, characterized in that, Along the first direction, the fan has a first air inlet surface and a second air inlet surface, wherein the flow area of ​​the air inlet region of the second air inlet surface is greater than the flow area of ​​the air inlet region of the first air inlet surface; The range hood also includes: A side-suction cavity is provided on the side of the top-suction cavity facing away from the frame. The side-suction cavity is connected to the top-suction cavity, and the side-suction cavity is provided with a side-suction smoke inlet. A flow divider is disposed in the top suction cavity. One side of the flow divider along the first direction forms a first flow channel between it and the wall of the top suction cavity, and the other side of the flow divider along the first direction forms a second flow channel between it and the second air inlet surface. The first flow channel is used to guide the gas flowing through the communication area between the top suction cavity and the side suction cavity to the air intake area of ​​the second air intake surface, and the second flow channel is used to guide at least part of the gas flowing through the top suction smoke inlet to the air intake area of ​​the second air intake surface; In the first direction, the flow area of ​​the first flow channel is greater than that of the second flow channel.

12. The range hood according to claim 11, characterized in that, The orthographic projection of the diverter along the first direction onto the vertical plane covers the distance between the fan and the air intake in the second direction.

13. The range hood according to claim 11, characterized in that, The first flow channel has a width along a first direction, and along a second direction, from a position away from to a position close to the fan, the width of the first flow channel generally increases.

14. The range hood according to claim 11, characterized in that, The flow divider and the air inlet have a fourth spacing L8 along the second direction that allows gas to pass through.

15. The range hood according to claim 11, characterized in that, The ratio of the smoke inlet area of ​​the top-suction inlet to the side-suction inlet ranges from 0.45 to 0.

85.

16. The range hood according to claim 11, characterized in that, The range hood also includes a hinged cover, which is used to open or close the side suction inlet. The opening and closing cover is configured to be slidably or rotatably connected to the side suction cavity.

Images