Range hood

Abstract

The invention provides a range hood, and relates to the technical field of kitchen appliances. Comprising a smoke collecting cavity, the top of the smoke collecting cavity is provided with a smoke outlet, a movable guide plate is arranged in the smoke collecting cavity and limits the smoke collecting cavity into a movable cavity, a smoke inlet is formed in the movable guide plate, and the movable guide plate has an open state and a closed state; the oil baffle plate is arranged in the smoke collecting cavity and swings along with opening and closing of the movable guide plate; when the movable guide plate is in an open state, the oil baffle plate is located at a first position; and when the movable guide plate is in the closed state, the oil baffle plate is located at the second position and located above the movable guide plate, and the oil baffle plate is used for preventing oil dirt above the oil baffle plate from flowing to the movable guide plate. The problem that in the prior art, oil accumulates in a movable cavity of a range hood can be solved, and the possibility that oil dirt accumulated in the movable cavity drips towards a cooking bench is reduced.

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] A range hood, also known as a cooker hood, is a kitchen appliance that purifies the kitchen environment. Installed above the kitchen stove, it quickly extracts stovetop waste and harmful cooking fumes, exhausting them outdoors. It also condenses and collects the fumes, reducing pollution, purifying the air, and providing safety features like anti-poisoning and explosion-proofing.

[0003] When the movable guide plate of an existing range hood is closed and retracted into the smoke collection chamber, its inner surface lies directly below the oily area on the inner wall of the smoke collection chamber. During cooking, oil droplets from the top and upper side walls of the smoke collection chamber naturally drip down, potentially landing directly on the inner surface of the retracted movable chamber. This not only seriously affects kitchen cleanliness and the user's cooking experience, but also poses a potential safety hazard if oil drips onto high-temperature cooktops. Summary of the Invention

[0004] The present application aims to provide a range hood to solve the problem of oil accumulation in the active cavity of the range hood in the prior art, thereby improving the user experience.

[0005] The present invention provides a range hood comprising:

[0006] A smoke collecting chamber, with a smoke outlet at the top, a movable guide plate provided in the smoke collecting chamber, the movable guide plate defining the smoke collecting chamber as a movable chamber, a smoke inlet provided on the movable guide plate, and the movable guide plate having an open state and a closed state;

[0007] The oil baffle is installed in the smoke collecting chamber, and the oil baffle swings with the opening and closing of the movable guide plate;

[0008] Wherein, when the movable guide plate is in the open state, the oil baffle is in the first position;

[0009] When the movable guide plate is in the closed state, the oil baffle is in the second position, the oil baffle is located above the movable guide plate, and is used to prevent the oil stains above the oil baffle from flowing toward the movable guide plate.

[0010] The range hood according to the embodiment of the present invention has at least the following beneficial effects: when the movable guide plate is closed, condensed oil on the inner wall of the smoke collection chamber falls onto the oil baffle plate and flows into the smoke collection chamber along the oil baffle plate, rather than dripping onto the inner wall of the movable chamber. This significantly reduces the accumulation of oil on the movable guide plate. Furthermore, when the movable guide plate is opened, the possibility of oil accumulated on the movable guide plate dripping onto the stovetop is reduced, thereby improving kitchen cleanliness and sanitation and the user's cooking experience.

[0011] According to some embodiments of the present invention, the oil baffle is hinged to the smoke collecting chamber, and the hinged portion between the oil baffle and the smoke collecting chamber is located above the movable guide plate;

[0012] The movable guide plate is provided with a supporting structure;

[0013] When the movable guide plate is in a closed state, the supporting structure abuts against the surface of the oil baffle plate, and the movable guide plate supports the oil baffle plate through the supporting structure;

[0014] When the movable guide plate switches between an open state and a closed state, the supporting structure can move along the surface of the oil baffle plate;

[0015] When the movable guide plate switches from the closed state to the open state, the movable guide plate pushes the oil baffle plate to swing from the first position to the second position through the contact between the supporting structure and the surface of the oil baffle plate.

[0016] In this embodiment, the support structure supports the oil baffle, ensuring it remains in a stable position regardless of whether the range hood is operating or closed, thereby enhancing its stability. Furthermore, the support structure allows the movable guide plate to switch between open and closed positions. The support structure can move along the surface of the oil baffle, thereby achieving linkage between the oil baffle and the movable guide plate. Furthermore, the contact surface between the support structure and the oil baffle utilizes a drag-reducing design to reduce friction caused by direct contact between the two, eliminating the noise degradation caused by metal friction.

[0017] According to some embodiments of the present invention, the support structure includes a connecting member and a rolling member;

[0018] One end of the connecting piece is connected to the movable guide plate, and the rolling piece is arranged at the other end of the connecting piece. The supporting structure is used to contact the surface of the oil baffle through the rolling piece, and the rolling piece can roll along the surface of the oil baffle.

[0019] In this embodiment, the supporting structure is composed of connecting parts and rolling parts. When the oil baffle plate is linked with the movable guide plate, there is rolling friction between the oil baffle plate and the rolling parts, thereby reducing the friction between the oil baffle plate and the supporting structure, reducing the noise caused by friction, and thus improving the user experience.

[0020] According to some embodiments of the present invention, a side of the oil baffle for contacting the support structure has a guide groove;

[0021] Part of the support structure is located in the guide groove, the support structure is used to contact the groove bottom of the guide groove, and the guide groove is used to constrain the support structure to move along the extension direction of the guide groove.

[0022] In this embodiment, the support structure and the supporting surface of the oil baffle remain in the guide grooves during the movement of the oil baffle in conjunction with the movable guide plate. The guide grooves prevent the hinge structure between the oil baffle and the smoke collection chamber from accumulating deformation, damage, and other fatigue damage over time, which can cause the oil baffle to shift during movement and increase torsional stress, which in turn can lead to a vicious cycle of structural damage. This improves the reliability and stability of the oil baffle, thereby extending the service life of the equipment.

[0023] According to some embodiments of the present invention, the surface of the oil baffle in contact with the support structure has a first ridge structure and a second ridge structure arranged in parallel, and a guide groove is formed between the first ridge structure and the second ridge structure.

[0024] In this embodiment, the first and second ridge structures form a guide groove, which provides guidance for the support structure and the oil baffle. At the same time, the first and second ridge structures can also act as reinforcement ribs to enhance the structural strength of the oil baffle.

[0025] According to some embodiments of the present invention, when the movable guide plate is in the extended position, the support structure abuts against the surface of the oil deflector plate.

[0026] In this embodiment, when the movable guide plate is in the extended position, the supporting structure abuts against the surface of the oil baffle plate to provide supporting force for the oil baffle plate, so that the oil baffle plate remains in this state unchanged. This can prevent the oil baffle plate from swinging in position due to external forces such as vibration and wind, or even causing the movable chamber and the smoke collecting chamber to be separated, thereby blocking the flow of oil smoke.

[0027] According to some embodiments of the present invention, an elastic member is provided between the oil baffle and the smoke collecting chamber;

[0028] The elastic member is used for elastically deforming when the movable guide plate switches from the open state to the closed state, and for driving the oil baffle plate to swing from the second position to the first position when the movable guide plate switches from the closed state to the open state.

[0029] In this embodiment, an elastic member is provided. When the movable guide plate switches from an open state to a closed state, the oil baffle plate, driven by the push rod motor, moves from a first position to a second position. The elastic member elastically deforms and begins to store energy. When the movable guide plate switches from a closed state to an open state, the energy stored in the elastic member drives the oil baffle plate to swing from the second position to the first position. This opens the passage between the movable chamber and the smoke collection chamber, allowing oil smoke to flow normally between the movable chamber and the smoke collection chamber.

[0030] According to some embodiments of the present invention, an elastic member presses the oil baffle plate onto the supporting structure of the range hood.

[0031] In this embodiment, a compressive stress is provided to the oil baffle plate by the elastic member, so that sufficient contact force is maintained between the oil baffle plate and the supporting structure, thereby improving the stability between the oil baffle plate and the supporting structure.

[0032] According to some embodiments of the present invention, the oil baffle includes a first side and a second side, the first side and the second side being located on opposite sides of the oil baffle, respectively, the first side being located above the movable guide plate and hinged to the smoke collecting chamber, and the second side being located above the second side when the oil baffle is in the second position;

[0033] When the oil baffle is in the second position, the oil baffle is inclined relative to the first reference plane, the second side edge is located below the first side edge, and the oil baffle is used to guide the oil above the oil baffle to the portion of the smoke collecting chamber located on the side of the active chamber away from the smoke inlet;

[0034] The first reference plane is a plane perpendicular to the height direction of the smoke collecting chamber.

[0035] In this embodiment, when the oil baffle is in the second position, the oil baffle is tilted relative to the first reference plane, with the second side positioned below the first side. When the oil baffle receives dripping oil, the oil flows along the tilt of the oil baffle toward the smoke collection chamber, dripping into the smoke collection chamber and preventing it from falling onto the inner wall of the active chamber. Furthermore, a collection trough can be provided below the tilt of the oil baffle to collect dripping oil. At the same time, this oil can be directed toward a portion away from the smoke inlet, thereby preventing the oil from flowing out of the smoke inlet.

[0036] According to some embodiments of the present invention, when the oil baffle is in the second position, the orthographic projection of the oil baffle on the first reference plane covers the orthographic projection of the movable guide plate on the first reference plane, and at least a portion of the orthographic projection of the oil baffle on the first reference plane is located within the orthographic projection of the smoke outlet on the first reference plane;

[0037] When the oil baffle is in the first position, at least part of the orthographic projection of the smoke outlet on the first reference plane is located outside the orthographic projection of the oil baffle on the first reference plane, and at least part of the orthographic projection of the smoke inlet on the second reference plane is located outside the orthographic projection of the oil baffle on the second reference plane. The second reference plane is a plane perpendicular to the depth direction of the smoke collecting chamber.

[0038] In this embodiment, when the movable guide plate is in a closed state and the oil baffle is in the second position, at least part of the orthographic projection of the oil baffle on the first reference plane is located within the orthographic projection of the smoke outlet on the first reference plane, so that the oil stains dripping from the smoke outlet will also fall onto the oil baffle, thereby preventing the oil stains at the oil outlet from condensing and dripping onto the inner wall of the movable cavity.

[0039] At the same time, when the movable guide is in the open state and the oil baffle is in the first position, at least a portion of the orthographic projection of the smoke outlet on the first reference plane is located outside the orthographic projection of the oil baffle on the first reference plane, and at least a portion of the orthographic projection of the smoke inlet on the second reference plane is located outside the orthographic projection of the oil baffle on the second reference plane. In this way, the smoke inlet, the movable chamber, the smoke collection chamber, and the smoke outlet are all interconnected, ensuring the normal flow of oil smoke and preventing the oil baffle from blocking the movable chamber and the smoke collection chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0041] Figure 1 This is an overall axial view of a range hood provided by the first embodiment of the present application, with the oil baffle in the first position;

[0042] Figure 2 This is an overall axial view of a range hood provided by the first embodiment of the present application, with the oil baffle in the second position;

[0043] Figure 3 A schematic diagram of the structure of the movable guide plate provided in the first embodiment of the present application that achieves extension and retraction by translation;

[0044] Figure 4 A schematic diagram of the structure of the movable guide plate provided in the first embodiment of the present application that achieves extension and retraction by means of rotation;

[0045] Figure 5 This is a partial structural axial view of a range hood provided in the first embodiment of the present application;

[0046] Figure 6 A schematic diagram of the oil baffle structure provided in the first embodiment of the present application;

[0047] Figure 7 For the working diagram of the elastic member;

[0048] Figure 8 A schematic diagram of the hinge structure of the first oil baffle provided in the first embodiment of the present application;

[0049] Figure 9 A schematic diagram of the hinge structure of the second oil baffle provided in the first embodiment of the present application;

[0050] Figure 10 A schematic diagram of the hinge structure of the third oil baffle provided in the first embodiment of the present application;

[0051] Figure 11 This is an overall axial view of a range hood provided in the second embodiment of the present application;

[0052] Figure 12 for Figure 11 A partial enlarged schematic diagram of part A;

[0053] Figure 13 This is a partial structural axial view of a range hood provided in a second embodiment of the present application;

[0054] Figure 14 for Figure 13 A partial enlarged schematic diagram of part B;

[0055] Figure 15 A schematic diagram of the oil baffle structure provided in the second embodiment of the present application.

[0056] Description of reference numerals:

[0057] 101-smoke collecting chamber;

[0058] 200- movable guide plate; 201- movable cavity; 202- smoke inlet;

[0059] 300 - oil baffle; 301 - first side; 302 - second side; 303 - guide groove; 304 - first ridge structure; 305 - second ridge structure;

[0060] 400-support structure; 401-connector; 402-rolling element;

[0061] 500-elastic parts;

[0062] 601-hinge piece; 602-hinge shaft; 603-hinge rod;

[0063] 700-push rod motor; 800-flip plate;

[0064] 900-transmission connection structure; 901-push-pull member; 902-matching structural member; 903-connecting shaft; 9031-shaft body; 9032-rolling part; 904-track groove; 905-first groove wall; 906-second groove wall. DETAILED DESCRIPTION

[0065] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. 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.

[0066] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0067] In this application, unless otherwise specified or limited, the terms "mounted," "connected," and "fixed" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integration; direct connections, indirect connections through an intermediate medium, or internal connections between two components or interactions between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0068] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0069] In the above description, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0070] Existing range hoods effectively improve extraction efficiency by expanding the smoke collection area. However, when the range hood is turned off and the movable guide plate is retracted into the smoke collection chamber, its top surface lies directly below the oily deposits on the inner wall of the smoke collection chamber. During cooking, heavy oil components in the smoke condense and deposit on the top and upper side walls of the smoke collection chamber due to cooling and airflow changes, forming oil droplets. These oil droplets naturally drip down, potentially landing directly on the inner surface of the retracted movable guide plate.

[0071] When a user uses a range hood, oil accumulated on the inner wall of the active cavity can drip onto the stovetop, pots, or ingredients below due to gravity, the tilt of the movable guide plate, or mechanical vibration, causing secondary contamination. This not only seriously affects kitchen cleanliness and the user's cooking experience, but also poses a potential safety hazard if oil drips onto high-temperature cooktops. Furthermore, long-term accumulation of oil on the inner wall of the active cavity and the telescopic mechanism can cause opening and closing to become stuck, produce unusual noises, and even damage drive components, affecting product life and performance.

[0072] To this end, the present application provides a range hood, referring to Figure 1 and Figure 2 As shown, the range hood of this embodiment includes:

[0073] The smoke collecting chamber 101 has a smoke outlet at the top thereof (not shown in the figure). A movable guide plate 200 is provided in the smoke collecting chamber 101. The movable guide plate 200 defines a movable chamber 201 of the smoke collecting chamber 101. A smoke inlet 202 is provided on the movable guide plate 200. The movable guide plate 200 has an open state and a closed state.

[0074] An oil baffle 300 is provided in the smoke collecting chamber 101 and swings along with the opening and closing of the movable guide plate 200;

[0075] When the movable guide plate 200 is in the open state, the oil baffle 300 is in the first position, and the smoke inlet 202 is connected to the smoke outlet through the movable cavity 201 and the smoke collecting cavity 101;

[0076] When the movable guide plate 200 is in the closed state, the oil baffle plate 300 is in the second position. The oil baffle plate 300 is located above the movable guide plate 200 and is used to prevent the oil above the oil baffle plate 300 from flowing toward the movable guide plate 200 .

[0077] In some embodiments of the present application, the movable guide plate 200 and the oil baffle 300 can be formed by stamping plates or by assembling multiple plates, and can be made of metal or other non-metallic structural parts that meet performance requirements.

[0078] The smoke collection chamber 101 can be formed by one or more structural members and is used to collect smoke generated during cooking in the kitchen and direct it to the outside. The smoke collection chamber 101 is connected to a smoke exhaust duct via a smoke outlet (not shown). Driven by a power device such as a fan, the smoke in the smoke collection chamber 101 is discharged through the smoke outlet and the smoke exhaust duct.

[0079] The movable guide plate 200 has an open state and a closed state. Figure 1 As shown, the movable guide plate 200 is retractably connected to one side of the depth direction of the smoke collecting chamber 101, wherein the depth direction is Figure 1 The movable guide plate 200 can open and close the movable cavity 201 by telescopic movement.

[0080] Specifically, refer to Figure 3 and Figure 4 As shown, the movable guide plate 200 can open or close the movable chamber 201 by translation or rotation. When the movable guide plate 200 flips outward or translates outward, the smoke inlet 202 is no longer blocked, and the movable chamber 201 is opened, entering the open state. Oil smoke enters the movable chamber 201 through the smoke inlet 202. When the movable guide plate 200 flips inward or translates inward, the smoke inlet 202 is no longer blocked, the movable chamber 201 is closed, and the movable guide plate 200 enters the closed state.

[0081] The function of the oil baffle 300 is that when the movable guide plate 200 is in the closed state, condensed oil on the inner wall of the smoke collecting chamber 101 will fall onto the oil baffle 300 instead of dripping onto the movable guide plate 200. This greatly reduces the accumulation of oil on the movable guide plate 200. Furthermore, when the movable guide plate 200 is opened outward, the possibility of oil accumulated on the movable guide plate 200 dripping onto the stove is reduced, thereby improving the cleanliness of the kitchen and the user's cooking experience.

[0082] In order to achieve the above purpose, combined Figure 1 and Figure 3 As shown, in this embodiment, the first side 301 of the oil baffle 300 is connected to the smoke collection chamber 101 via a hinge. The movable guide plate 200 is connected to the push rod motor 700 through a transmission mechanism, and the push rod motor 700 drives the movable guide plate 200 to open or close the movable chamber 201. At the same time, the movable guide plate 200 drives the oil baffle 300 to rotate about the hinge via the transmission connection structure 900, thereby changing the oil baffle 300 between the first position and the second position, and finally moving the oil baffle 300 to a predetermined position.

[0083] The push rod motor 700 is linked with the rotating rod assembly to realize simultaneous pushing out and retraction of the flap 800, thereby improving the smoking effect by collecting the smoke through the flap 800.

[0084] When the movable guide plate 200 is in the retracted position, it is closed, and the oil baffle 300 is located above the movable guide plate 200. Simultaneously, the orthographic projection of the oil baffle 300 on a first reference plane overlaps the orthographic projection of the outer surface of the portion of the movable guide plate 200 located within the smoke collection chamber 101 on the first reference plane. The first reference plane is a plane perpendicular to the height direction of the smoke collection chamber 101. Thus, in this embodiment, when the movable guide plate 200 is closed, the oil baffle 300 is in the second position, capable of shielding the movable guide plate 200 from oil droplets dripping from the smoke collection chamber 101.

[0085] At the same time, when the movable guide plate 200 extends outward to open the movable chamber 201 and oil smoke enters the movable chamber 201, the oil baffle 300 must avoid blocking the movable chamber 201 and the smoke collecting chamber 101, so that the movable chamber 201 and the smoke collecting chamber 101 are in a connected state, ensuring that the oil smoke can be smoothly discharged outward through the smoke inlet 202, the movable chamber 201, the smoke collecting chamber 101, and the smoke outlet in sequence. It is necessary to maintain linkage with the movable guide plate 200, that is, when the movable guide plate 200 is extended and the range hood is working, the oil baffle 300 must move to the first position to avoid blocking the movable chamber 201 and the smoke collecting chamber 101. When the movable guide plate 200 is in the retracted position, the oil baffle 300 needs to move above the movable guide plate 200 to receive oil stains dripping from above.

[0086] In some embodiments, Figures 8 to 10 Schematic diagrams of the structures of the hinges on three oil baffles 300 are shown. Figure 8 The oil baffle 300 is provided with a hinge 601, connecting the oil baffle 300 and the smoke collection chamber 101 via the hinge 601. The hinge 601 can be one or more pieces, and can be provided along the first side 301 or on both sides of the first side 301. The oil baffle 300 and the hinge can be integral or separate.

[0087] Figure 9 It is shown that by arranging hinge shafts 602 at both ends of the first side 301 and by arranging corresponding rotation mounting holes on the smoke collecting chamber 101, the oil baffle 300 and the smoke collecting chamber 101 are hingedly connected through the hinge shafts 602 and the rotation mounting holes, and the oil baffle 300 can be rotated around the hinge shafts 602.

[0088] Figure 10 It is shown that a hinge rod 603 is provided along the first side 301 . By providing a corresponding rotation mounting groove on the smoke collecting chamber 101 , the oil baffle 300 and the smoke collecting chamber 101 can be hinged, so that the oil baffle 300 rotates around the hinge rod 603 .

[0089] Of course, the oil baffle 300 and the smoke collecting chamber 101 include but are not limited to the above hinged connection forms. As long as the oil baffle 300 can be rotated around the hinge position, it falls within the protection scope of this application.

[0090] refer to Figure 1 As shown, in some embodiments of the present invention, the oil baffle 300 is hinged to the smoke collecting chamber 101, and the hinged portion between the oil baffle 300 and the smoke collecting chamber 101 is located above the movable guide plate 200;

[0091] The movable guide plate 200 is provided with a support structure 400;

[0092] When the movable guide plate 200 is in the closed state, the support structure 400 abuts against the surface of the oil baffle plate 300 , and the movable guide plate 200 supports the oil baffle plate 300 through the support structure 400 ;

[0093] When the movable guide plate 200 switches between the open state and the closed state, the support structure 400 can move along the surface of the oil baffle 300;

[0094] When the movable guide plate 200 switches from the closed state to the open state, the movable guide plate 200 pushes the oil baffle plate 300 to swing from the first position to the second position through the contact between the support structure 400 and the surface of the oil baffle plate 300 .

[0095] In this embodiment, the oil baffle 300 is supported by the support structure 400, so that the oil baffle 300 can maintain its own state unchanged in different states of the range hood, such as the working state or the closed state, thereby improving the stability of the oil baffle 300.

[0096] At the same time, the movable guide plate 200 is switched between the open state and the closed state through the support structure 400 , and the support structure 400 can move along the surface of the oil baffle 300 , thereby realizing the linkage between the oil baffle 300 and the movable guide plate 200 .

[0097] Furthermore, the contact surface between the support structure 400 and the oil baffle 300 can be designed with drag reduction to reduce friction caused by direct contact between the support structure 400 and the oil baffle 300, thereby eliminating the poor noise experience caused by metal friction.

[0098] Specifically, when the movable guide plate 200 switches from the open state to the closed state, the movable guide plate 200 contacts the surface of the oil baffle plate 300 through the support structure 400, pushing the oil baffle plate 300 to swing, so that the oil baffle plate 300 changes between the first position and the second position.

[0099] Thus, when the movable guide plate 200 is in the open state, the oil baffle 300 is in the first position. In this position, the oil baffle 300 does not block the passage between the movable chamber 201 and the smoke collecting chamber 101, allowing the movable chamber 201 and the smoke collecting chamber 101 to be in a connected state, ensuring that oil smoke can be smoothly discharged outward through the smoke inlet 202, the movable chamber 201, the smoke collecting chamber 101, and the smoke outlet. When the movable guide plate 200 is in the closed state, the oil baffle 300 is in the second position. In this position, the oil baffle 300 is located above the movable guide plate 200, catching oil stains dripping from above and preventing them from dripping onto the movable guide plate 200.

[0100] Combine Figure 1 and Figure 5 As shown, in some embodiments of the present invention, the support structure 400 includes a connecting member 401 and a rolling member 402;

[0101] One end of the connecting member 401 is connected to the movable guide plate 200, and the rolling member 402 is provided at the other end of the connecting member 401. The supporting structure 400 is used to contact the surface of the oil baffle 300 through the rolling member 402, and the rolling member 402 can roll along the surface of the oil baffle 300.

[0102] In this embodiment, the support structure 400 is composed of a connecting member 401 and a rolling member 402. When the oil baffle plate 300 is linked with the movable guide plate 200, there is rolling friction between the oil baffle plate 300 and the rolling member 402, thereby reducing the friction between the oil baffle plate 300 and the support structure 400, reducing the noise caused by friction, and thus improving the user experience.

[0103] Combine Figure 1 and Figure 6 As shown, in some embodiments of the present invention, the oil baffle 300 has a guide groove 303 on one side thereof for contacting the support structure 400;

[0104] Part of the support structure 400 is located in the guide groove 303 . The support structure 400 is used to contact the bottom of the guide groove 303 . The guide groove 303 is used to constrain the support structure 400 from moving along the extension direction of the guide groove 303 .

[0105] In this embodiment, the guide groove 303 is provided on the oil deflector 300. The groove direction of the guide groove 303 is set according to the movement trajectory of the contact position between the oil deflector 300 and the support structure 400 during movement. In this embodiment, the groove direction of the guide groove 303 extends from the first side 301 to the second side 302.

[0106] When the oil baffle 300 is linked with the movable guide plate 200, the supporting surface of the support structure 400 and the oil baffle 300 remain in the guide groove 303. Specifically, in this embodiment, the rolling element 402 remains in the guide groove 303 and rolls along it. By setting a limiter in the guide groove 303, the hinge between the oil baffle 300 and the smoke collection chamber 101 can be prevented from experiencing fatigue damage such as deformation and damage accumulated over time, causing the oil baffle 300 to shift during movement and increase torsional stress, which in turn can lead to a vicious cycle of structural damage. This improves the performance reliability and stability of the oil baffle 300, thereby increasing the service life of the equipment.

[0107] refer to Figures 6 to 10 As shown, in some embodiments of the present invention, the surface of the oil baffle 300 on one side in contact with the support structure 400 has a first ridge structure 304 and a second ridge structure 305 arranged in parallel, and a guide groove 303 is formed between the first ridge structure 304 and the second ridge structure 305.

[0108] In this embodiment, two mutually parallel first and second ridge structures 304, 305 are provided on the oil deflector plate 300, with a gap between the first and second ridge structures 304, 305 forming a guide groove 303. The first and second ridge structures 304, 305 can be formed by casting, welding, or other methods. Alternatively, they can be directly stamped from a plate to reduce manufacturing costs. The stamped first and second ridge structures 304, 305 can also ensure sufficient structural strength while maintaining lightweight.

[0109] The guide groove 303 provides a guiding function for the support between the support structure 400 and the oil baffle 300. At the same time, the first ridge structure 304 and the second ridge structure 305 can also act as reinforcing ribs to enhance the structural strength of the oil baffle 300.

[0110] In some embodiments of the present invention, when the movable guide plate 200 is in the closed state, the support structure 400 abuts against the surface of the oil baffle 300 .

[0111] In this embodiment, when the movable guide plate 200 is in the closed state, the support structure 400 abuts against the surface of the oil baffle plate 300 to provide support force for the oil baffle plate 300, so that the oil baffle plate 300 remains in this state unchanged, thereby preventing the oil baffle plate 300 from swinging in position due to external forces such as vibration and wind, or even causing the movable chamber 201 and the smoke collecting chamber 101 to be separated, thereby blocking the flow of oil smoke.

[0112] refer to Figure 6 and Figure 7As shown, in some embodiments of the present invention, an elastic member 500 is provided between the oil baffle 300 and the smoke collecting chamber 101;

[0113] The elastic member 500 is used to elastically deform when the movable guide plate 200 switches from the open state to the closed state, and is used to drive the oil baffle 300 to swing when the movable guide plate 200 switches from the closed state to the open state.

[0114] In this embodiment, by setting the elastic member 500, when the movable guide plate 200 switches from the open state to the closed state, the oil baffle plate 300 moves from the first position to the second position under the drive of the push rod motor 700, and the elastic member 500 undergoes elastic deformation and begins to store energy.

[0115] When the movable guide plate 200 switches from a closed state to an open state, the energy stored in the elastic member 500 drives the oil baffle 300 to swing, causing the oil baffle 300 to move from the second position to the first position, and the passage between the movable chamber 201 and the smoke collecting chamber 101 is opened, allowing the oil smoke to flow normally between the movable chamber 201 and the smoke collecting chamber 101.

[0116] Among them, the elastic member 500 can specifically be a retaining spring or a tension spring, and can be set in one group or multiple groups to provide a downward rebound force for the oil baffle 300. Under the combined action of gravity and rebound force, the guide groove 303 on the oil baffle 300 is always in contact with the rolling member 402, and ensures that the oil baffle 300 will not get stuck when it is opened.

[0117] In some embodiments of the present invention, the elastic member 500 presses the oil baffle 300 onto the support structure 400 of the range hood.

[0118] In this embodiment, the elastic member 500 can provide a compressive stress to the oil baffle 300, maintaining sufficient contact force between the oil baffle 300 and the support structure 400, thereby improving the stability between the oil baffle 300 and the support structure 400. Specifically, by applying an external force to the elastic member 500 in its initial state, the elastic member 500 maintains a certain degree of deformation in its initial state. This allows the elastic member 500 to provide a compressive stress to the oil baffle 300, thereby pressurizing the oil baffle 300 to the support structure 400 of the range hood.

[0119] In some embodiments of the present invention, the oil baffle 300 includes a first side 301 and a second side 302. The first side 301 and the second side 302 are respectively located on opposite sides of the oil baffle 300. The first side 301 is located above the movable guide plate 200 and is hinged to the smoke collecting chamber 101. The second side 302, when the oil baffle 300 is in the second position, is located above the second side 302 when the oil baffle 300 is in the first position.

[0120] When the oil baffle 300 is in the second position, the oil baffle 300 is inclined relative to the first reference plane, and the second side edge is located below the first side edge. The oil baffle 300 is used to guide the oil stains above the oil baffle 300 to the portion of the smoke collecting chamber 101 located on the side of the active chamber 201 away from the smoke inlet 202;

[0121] The first reference plane is a plane perpendicular to the height direction of the smoke collecting chamber 101 .

[0122] refer to Figure 1 and Figure 3 As shown, in this embodiment, when the oil baffle 300 is in the second position, the oil baffle 300 is tilted relative to the first reference plane, and the second side 302 is located below the first side 301. When the oil baffle 300 receives dripping oil, the oil flows along the tilt direction of the oil baffle 300 toward the smoke collection chamber 101 and drips into the smoke collection chamber 101, avoiding falling onto the inner wall of the active chamber 201. Furthermore, a collection trough can be provided below the tilt direction of the oil baffle 300 to collect dripping oil. At the same time, the oil is directed to a portion away from the smoke inlet 202, thereby preventing the oil from flowing out of the smoke inlet 202.

[0123] In some embodiments of the present invention, when the oil baffle 300 is in the second position, the orthographic projection of the oil baffle 300 on the first reference plane covers the orthographic projection of the movable guide plate 200 on the first reference plane, and at least a portion of the orthographic projection of the oil baffle 300 on the first reference plane is located within the orthographic projection of the smoke outlet on the first reference plane.

[0124] When the oil baffle 300 is in the first position, at least part of the orthographic projection of the smoke outlet on the first reference plane is located outside the orthographic projection of the oil baffle 300 on the first reference plane, and at least part of the orthographic projection of the smoke inlet 202 on the second reference plane is located outside the orthographic projection of the oil baffle 300 on the second reference plane. The second reference plane is a plane perpendicular to the depth direction of the smoke collecting chamber 101.

[0125] In this embodiment, when the movable guide plate 200 is in the closed state and the oil baffle plate 300 is in the second position, at least part of the orthographic projection of the oil baffle plate 300 on the first reference plane is located within the orthographic projection of the smoke outlet on the first reference plane, so that the oil stains dripping from the smoke outlet will also fall onto the oil baffle plate 300, preventing the oil stains at the oil outlet from condensing and dripping onto the inner wall of the movable cavity 201.

[0126] At the same time, when the movable guide plate 200 is in the open state and the oil baffle 300 is in the first position, at least a portion of the orthographic projection of the smoke outlet on the first reference plane is located outside the orthographic projection of the oil baffle 300 on the first reference plane, and at least a portion of the orthographic projection of the smoke inlet on the second reference plane is located outside the orthographic projection of the oil baffle 300 on the second reference plane. This ensures that the smoke inlet, movable chamber 201, smoke collection chamber 101, and smoke outlet are interconnected, ensuring the normal flow of oil smoke and preventing the oil baffle 300 from blocking the movable chamber 201 and smoke collection chamber 101.

[0127] refer to Figures 1 to 5 As shown, the operation process of the range hood of this embodiment is as follows:

[0128] When the range hood begins operation, the push rod motor 700 drives the rotating rod assembly, pushing open the flap 800 and simultaneously pushing out the movable guide plate 200. The rolling element 402 tends to move away from the guide groove 303. Under the rebound force of the elastic member 500 and gravity, the rolling element 402 rolls in the guide groove 303, and the oil baffle 300 rotates downward about the hinge until the movable guide plate 200 stops pushing out. At this point, the oil baffle 300 is in the first position, freeing up space within the smoke collection chamber 101 and preventing airflow.

[0129] When the range hood stops working and starts to close, the push rod motor 700 drives the rotating rod assembly to retract the flap 800 and the movable guide plate 200 at the same time. The rolling member 402 presses against the track groove 904 and pushes the oil baffle 300 to rotate upward around the hinge. The thrust of the closing movable guide plate 200 offsets the pulling force of the elastic member 500.

[0130] At this time, the oil baffle 300 is in the second position, and the oil above the smoke collecting chamber 101 falls onto the oil baffle 300, and then flows toward the rear side of the smoke collecting chamber 101 along its inclined direction, dripping into the inside of the smoke collecting chamber 101 to avoid falling onto the movable guide plate 200.

[0131] In the above embodiment, after the elastic member 500 has been working for a long time, the elasticity of the elastic member 500 will inevitably weaken or even fail, thereby causing the oil deflector 300 to be unable to return to its original position.

[0132] For this purpose, refer to Figures 11 to 15 As shown, in some possible embodiments, the oil baffle 300 is transmission-connected to the movable guide plate 200 via a transmission connection structure 900. When the movable guide plate 200 switches between the open state and the closed state, the movable guide plate 200 drives the oil baffle 300 to swing relative to the smoke collecting chamber 101 via the transmission connection structure 900, synchronously switching between the first position and the second position.

[0133] refer to Figures 11 to 14As shown, in some embodiments of the present application, the transmission connection structure 900 includes a push-pull member 901;

[0134] One end of the push-pull member 901 is connected to the oil baffle 300 , and the other end of the push-pull member 901 is connected to the movable guide plate 200 ;

[0135] When the movable guide plate 200 switches from the open state to the closed state, the movable guide plate 200 pushes the oil baffle plate 300 to swing from the first position to the second position through the push-pull member 901;

[0136] When the movable guide plate 200 switches from the closed state to the open state, the movable guide plate 200 pulls the oil baffle plate 300 to swing from the second position to the first position through the push-pull member 901 .

[0137] refer to Figure 11 and Figure 12 As shown, in this embodiment, when the movable guide plate 200 switches from the open state to the closed state, the movable guide plate 200 pushes the oil baffle plate 300 to swing from the first position to the second position through the push-pull member 901, so that the oil baffle plate 300 is located above the movable guide plate 200. The oil baffle plate 300 can block the oil droplets dripping from the smoke collecting chamber 101 for the movable guide plate 200.

[0138] When the movable guide plate 200 switches from a closed state to an open state, the movable guide plate 200 pulls the oil baffle 300 from the second position to the first position through the push-pull member 901, so that the oil baffle 300 moves to a position to avoid blocking the movable chamber 201 and the smoke collecting chamber 101, ensuring that the oil smoke can be discharged smoothly through the smoke inlet 202, the movable chamber 201, the smoke collecting chamber 101, and the smoke outlet in sequence.

[0139] The push-pull member 901 pushes the oil baffle 300 to swing back and forth between the first and second positions, switching the movable guide plate 200 between the closed and open states. When the range hood is operating, the oil baffle 300 moves to the first position to avoid blocking the movable chamber 201 and the smoke collecting chamber 101. After the range hood is finished operating, the movable guide plate 200 is closed, and the oil baffle 300 moves above the movable guide plate 200 to catch any dripping oil.

[0140] In some embodiments of the present application, the transmission connection structure 900 further includes a matching structural member 902;

[0141] The matching structural member 902 is fixedly connected to the oil baffle 300, one end of the push-pull member 901 is fixedly connected to the movable guide plate 200, and the other end of the push-pull member 901 is provided with a connecting shaft 903, which is parallel to the oil baffle 300;

[0142] The mating structural member 902 has a track groove 904 on one side in the width direction of the smoke collecting chamber 101. The connecting shaft 903 is disposed in the track groove 904. The connecting shaft 903 can rotate relative to the mating structural member 902 and can move along the extension direction of the track groove 904. The push-pull member 901 is movably connected to the mating structural member 902 via the connecting shaft 903 and the track groove 904.

[0143] When the movable guide plate 200 switches between the closed state and the open state, the push-pull member 901 pushes and pulls the matching structural member 902 via the connecting shaft 903 to drive the oil baffle 300 to swing.

[0144] Combine Figures 11 to 15 As shown, in this embodiment, when the movable guide plate 200 switches from the open state to the closed state, the push-pull member 901 contacts the groove wall of the track groove 904 through the connecting shaft 903, pushing the oil baffle plate 300 to swing. Under the push of the connecting shaft 903, the connecting shaft 903 moves along the track groove 904 while pushing the oil baffle plate 300 to rotate around the hinge position until the oil baffle plate 300 is located above the movable guide plate 200. The oil baffle plate 300 can block the oil droplets dripping from the smoke collecting chamber 101 for the movable guide plate 200.

[0145] When the movable guide plate 200 switches from a closed state to an open state, the connecting shaft 903 applies a force to the second groove wall 906. While the connecting shaft 903 moves along the track groove 904, it pulls the oil baffle 300 to swing, so that the oil baffle 300 rotates around the hinge position until it moves to a position that avoids blocking the movable chamber 201 and the smoke collecting chamber 101, ensuring that the oil smoke can be discharged smoothly through the smoke inlet 202, the movable chamber 201, the smoke collecting chamber 101, and the smoke outlet in sequence.

[0146] The connecting shaft 903 is rotatable relative to the mating structural member 902. Rolling friction occurs between the connecting shaft 903 and the first and second groove walls 905, 906. This reduces friction and the resulting collision noise. The connecting shaft 903 can be a roller or a wheel.

[0147] refer to Figure 14 As shown, in some embodiments of the present application, the connecting shaft 903 includes a shaft body portion 9031 and a rolling portion 9032;

[0148] The shaft portion 9031 is fixedly connected to the push-pull member 901, and the rolling portion 9032 is sleeved outside the shaft portion 9031 and is coaxially rotatably connected to the shaft portion 9031;

[0149] The rolling portion 9032 is disposed in the track groove 904 , and the connecting shaft 903 contacts the first groove wall 905 and the second groove wall 906 through the rolling portion 9032 . The rolling portion 9032 can roll along the first groove wall 905 and the second groove wall 906 .

[0150] Combine Figures 11 to 15 As shown, in this embodiment, the connecting shaft 903 consists of a shaft portion 9031 and a rolling portion 9032. During operation, the shaft portion 9031 remains stationary, while the rolling portion 9032 rotates relative to the shaft portion 9031. Through the interaction between the rolling portion 9032 and the first groove wall 905 and the second groove wall 906 of the track groove 904, the oil baffle 300 is driven to swing, causing the oil baffle 300 to move to a predetermined position. Specifically, the rolling portion 9032 is a rolling bearing. Both the shaft portion 9031 and the rolling portion 9032 are common standard components, significantly reducing production costs.

[0151] refer to Figures 11 to 15 As shown, in some embodiments of the present application, the transmission connection structure 900 includes two matching structural members 902 , and the two matching structural members 902 are respectively located on both sides of the push-pull member 901 in the width direction of the smoke collecting chamber 101 ;

[0152] Along the width direction of the smoke collecting chamber 101, connecting shafts 903 are provided on both sides of the push-pull member 901, and a track groove 904 is provided on the side of the matching structural member 902 close to the push-pull member 901. The connecting shafts 903 provided on both sides of the push-pull member 901 are respectively passed through the track grooves 904 of the matching structural members 902 located on both sides of the push-pull member 901, so that the connecting shafts 903 can move along the extension direction of the track grooves 904 passed through. The two sides of the push-pull member 901 are movably connected to the matching structural members 902 located on both sides of the push-pull member 901 through the connecting shafts 903 provided on both sides of the push-pull member 901 and the track grooves 904 of the matching structural members 902 located on both sides of the push-pull member 901;

[0153] When the movable guide plate 200 switches between the open state and the closed state, the push-pull member 901 pushes and pulls the matching structural members 902 located on both sides of the push-pull member 901 through the connecting shafts 903 located on both sides of the push-pull member 901 to drive the oil baffle 300 to swing.

[0154] Combine Figures 11 to 15 As shown, in this embodiment, the transmission connection structure 900 is composed of two matching structural members 902. By providing connecting shafts 903 on both sides of the push-pull member 901, the two sides of the push-pull member 901 and the two matching structural members 902 work together to make the force on the oil baffle 300 uniform, thereby improving the stability of the system.

[0155] refer to Figure 14 As shown, in some embodiments of the present application, the connecting shafts 903 provided on both sides of the push-pull member 901 are coaxial.

[0156] In this embodiment, by making the connecting shafts 903 on both sides of the push-pull member 901 coaxial, the force on both sides of the push-pull member 901 is evenly distributed, avoiding the situation where the oil baffle 300 is offset due to uneven force, thereby improving the stability of the system. The connecting shafts 903 on both sides can be arranged separately or integrally.

[0157] refer to Figure 15 As shown, in some embodiments of the present application, the peripheral wall of the track groove 904 is a closed structure.

[0158] In this embodiment, the track groove 904 is a long circular groove structure. The track groove 904 adopts a closed structure design, which can limit the movement trajectory of the connecting shaft 903 in the track groove 904 and prevent the connecting shaft 903 from escaping the track groove 904. Furthermore, by setting the length of the track groove 904, the swing range of the oil baffle 300 can be limited.

[0159] refer to Figure 15 As shown, in some embodiments of the present application, the track groove 904 is a straight groove extending in a direction from the first side 301 to the second side 302 , and the track groove 904 is parallel to the oil baffle 300 .

[0160] In this embodiment, the track groove 904 is set as a straight groove extending in the direction from the first side 301 to the second side 302. When the rolling part 9032 moves in the track groove 904, the straight groove can ensure the smooth movement of the rolling part 9032 and avoid jamming.

[0161] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A range hood, characterized in that: include: A smoke collecting chamber (101), wherein the top of the smoke collecting chamber (101) has a smoke outlet, a movable guide plate (200) is provided in the smoke collecting chamber (101), the movable guide plate (200) defines the smoke collecting chamber (101) as an active chamber (201), a smoke inlet (202) is provided on the movable guide plate (200), and the movable guide plate (200) has an open state and a closed state; an oil baffle (300) disposed in the smoke collecting chamber (101), wherein the oil baffle (300) swings as the movable guide plate (200) is opened and closed; Wherein, when the movable guide plate (200) is in the open state, the oil baffle plate (300) is in the first position; When the movable guide plate (200) is in the closed state, the oil baffle plate (300) is in the second position, the oil baffle plate (300) is located above the movable guide plate (200), and the oil baffle plate (300) is used to prevent oil stains above the oil baffle plate (300) from flowing toward the movable guide plate (200).

2. The range hood according to claim 1, characterized in that: The oil baffle plate (300) is hinged to the smoke collecting chamber (101), and the hinged portion between the oil baffle plate (300) and the smoke collecting chamber (101) is located above the movable guide plate (200); The movable guide plate (200) is provided with a supporting structure (400); When the movable guide plate (200) is in the closed state, the support structure (400) abuts against the surface of the oil baffle plate (300), and the movable guide plate (200) supports the oil baffle plate (300) via the support structure (400); When the movable guide plate (200) switches between the open state and the closed state, the support structure (400) can move along the surface of the oil baffle plate (300); When the movable guide plate (200) switches from the closed state to the open state, the movable guide plate (200) pushes the oil baffle plate (300) to swing from the first position to the second position through contact between the support structure (400) and the surface of the oil baffle plate (300).

3. The range hood according to claim 2, characterized in that: The support structure (400) comprises a connecting member (401) and a rolling member (402); One end of the connecting member (401) is connected to the movable guide plate (200), and the rolling member (402) is provided at the other end of the connecting member (401). The supporting structure (400) is used to contact the surface of the oil baffle (300) through the rolling member (402), and the rolling member (402) can roll along the surface of the oil baffle (300).

4. The range hood according to claim 2, characterized in that: The oil baffle (300) has a guide groove (303) on one side thereof for contacting the support structure (400); Part of the support structure (400) is located in the guide groove (303), the support structure (400) is used to contact the groove bottom of the guide groove (303), and the guide groove (303) is used to constrain the support structure (400) to move along the extension direction of the guide groove (303).

5. The range hood according to claim 4, characterized in that: The surface of the oil baffle (300) on the side in contact with the support structure (400) comprises a first ridge structure (304) and a second ridge structure (305) arranged in parallel, and the guide groove (303) is formed between the first ridge structure (304) and the second ridge structure (305).

6. The range hood according to claim 2, characterized in that: When the movable guide plate (200) is in the closed state, the support structure (400) abuts against the surface of the oil baffle plate (300).

7. The range hood according to any one of claims 1 to 6, characterized in that: An elastic member (500) is provided between the oil baffle (300) and the smoke collecting chamber (101); The elastic member (500) is used to elastically deform when the movable guide plate (200) switches from the open state to the closed state, and is used to drive the oil baffle (300) to swing from the second position to the first position when the movable guide plate (200) switches from the closed state to the open state.

8. The range hood according to claim 7, characterized in that: The elastic member (500) presses the oil baffle (300) onto the support structure (400) of the range hood.

9. The range hood according to any one of claims 1 to 6, characterized in that: The oil baffle (300) comprises a first side (301) and a second side (302), the first side (301) and the second side (302) being located on opposite sides of the oil baffle (300), the first side (301) being located above the movable guide plate (200) and being hinged to the smoke collecting chamber (101), and the position of the second side (302) when the oil baffle (300) is in the second position being located above the position of the second side (302) when the oil baffle (300) is in the first position; When the oil baffle (300) is in the second position, the oil baffle (300) is inclined relative to the first reference plane, the second side edge is located below the first side edge, and the oil baffle (300) is used to guide the oil stains above the oil baffle (300) to a portion of the smoke collecting chamber (101) located on a side of the active chamber (201) away from the smoke inlet (202); Wherein, the first reference plane is a plane perpendicular to the height direction of the smoke collecting chamber (101).

10. The range hood according to any one of claims 1 to 6, characterized in that: When the oil baffle (300) is in the second position, the orthographic projection of the oil baffle (300) on the first reference plane covers the orthographic projection of the movable guide plate (200) on the first reference plane, and at least a portion of the orthographic projection of the oil baffle (300) on the first reference plane is located within the orthographic projection of the smoke outlet on the first reference plane; When the oil baffle (300) is in the first position, at least part of the orthographic projection of the smoke outlet on the first reference plane is located outside the orthographic projection of the oil baffle (300) on the first reference plane, and at least part of the orthographic projection of the smoke inlet (202) on the second reference plane is located outside the orthographic projection of the oil baffle (300) on the second reference plane, wherein the second reference plane is a plane perpendicular to the depth direction of the smoke collecting chamber (101).

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