Oil net device and range hood

Abstract

The present application belongs to the technical field of kitchen appliances, and particularly relates to an oil screen device and a range hood. The present application aims to solve the problem of poor suction effect of the existing range hood on oil fume. The range hood of the present application comprises a shell and an oil screen device, the shell is provided with an air inlet, and the oil screen device is arranged at the air inlet. The oil screen device comprises a first oil screen assembly, a second oil screen assembly and a driving device arranged between the first oil screen assembly and the second oil screen assembly. The driving device is used to drive the first inner screen body to move in a direction away from the second oil screen assembly, and the driving device is also used to drive the second inner screen body to move in a direction away from the first oil screen assembly. Through the above arrangement, the oil screen assembly corresponding to the closed state of the cooking head is closed, the suction force of the range hood is concentrated on the oil screen assembly corresponding to the cooking head in the open state, and air only enters the shell from the oil screen assembly corresponding to the cooking head in the open state, thereby improving the suction efficiency of the range hood.

Description

Oil filter device and range hood Technical Field

[0001] This invention relates to the field of kitchen appliance technology, specifically to an oil filter device and a range hood. Background Technology

[0002] Range hoods are typically installed above kitchen stoves to exhaust the combustion gases and cooking fumes to the outside, thereby improving the air quality in the kitchen.

[0003] In related technologies, a range hood includes a housing, an oil filter device, and a fan. The housing has an air inlet facing the stove. The oil filter device includes a mesh body that covers the air inlet and has multiple spaced mesh openings. The fan is located inside the housing and can draw fumes and other gases from the stove into the housing through the mesh body, and then transport them outdoors to improve the air quality in the kitchen.

[0004] However, cooktops are generally equipped with multiple burners for cooking, and some burners are often turned on during cooking. When the range hood is working, air enters the casing through the mesh corresponding to the burner that is closed, which can easily lead to insufficient gas flow through the mesh corresponding to the burner that is open, resulting in poor smoke extraction. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, specifically the poor smoke extraction effect of existing range hoods, this invention provides an oil filter device, comprising: a first oil filter assembly and a second oil filter assembly spaced apart; the first oil filter assembly includes a first inner filter body and a first outer filter body stacked together; the second oil filter assembly includes a second inner filter body and a second outer filter body stacked together; both the first and second inner filter bodies have inner meshes, and both the first and second outer filter bodies have outer meshes; a driving device is disposed between the first and second oil filter assemblies, the driving device driving the first inner filter body to translate in a direction away from the second oil filter assembly, so that the projection of the inner meshes on the first inner filter body onto the first outer filter body is located outside the outer meshes; the driving device is further used to drive the second inner filter body to translate in a direction away from the first oil filter assembly, so that the projection of the inner meshes on the second inner filter body onto the second outer filter body is located outside the outer meshes.

[0006] In the preferred embodiment of the above-mentioned oil mesh device, the driving device includes a rotating device and a swing arm. The swing arm has a driving end that is pulsatorically connected to the rotating device and a stop end that is away from the driving end. The stop end has a first stop rod extending toward the first oil mesh assembly and a second stop rod extending toward the second oil mesh assembly. The rotating device is used to drive the swing arm to rotate so that the first stop rod abuts against the first inner mesh body in a direction away from the second oil mesh assembly, or the second stop rod abuts against the second inner mesh body in a direction away from the first oil mesh assembly.

[0007] In the preferred embodiment of the above-mentioned oil mesh device, a first roller is rotatably provided at the end of the first abutting rod, and a second roller is rotatably provided at the end of the second abutting rod.

[0008] In the preferred embodiment of the above-mentioned oil mesh device, the oil mesh device further includes a limiting device. When the first abutting rod abuts against the first inner mesh body in a direction away from the second oil mesh assembly, such that the projection of the inner mesh eye on the first inner mesh body onto the first outer mesh body is located outside the outer mesh eye, the limiting device prevents the first abutting rod from rotating in a direction away from the second oil mesh assembly. When the second abutting rod abuts against the second inner mesh body in a direction away from the first oil mesh assembly, such that the projection of the inner mesh eye on the second inner mesh body onto the second outer mesh body is located outside the outer mesh eye, the limiting device prevents the second abutting rod from rotating in a direction away from the first oil mesh assembly.

[0009] In the preferred embodiment of the above-mentioned oil mesh device, the limiting device includes a limiting rod extending from the driving end in a direction away from the abutting end. A first limiting portion is provided between the limiting rod and the first oil mesh assembly, and a second limiting portion is provided between the limiting rod and the second oil mesh assembly. The first abutting rod abuts against the first inner mesh body in a direction away from the second oil mesh assembly, such that when the projection of the inner mesh eye on the first inner mesh body onto the first outer mesh body is outside the outer mesh eye, the limiting rod abuts against the second limiting portion. The second abutting rod abuts against the second inner mesh body in a direction away from the first oil mesh assembly, such that when the projection of the inner mesh eye on the second inner mesh body onto the second outer mesh body is outside the outer mesh eye, the limiting rod abuts against the first limiting portion.

[0010] In the preferred embodiment of the above-mentioned oil mesh device, the oil mesh device further includes a connecting plate, which is disposed between the first oil mesh assembly and the second oil mesh assembly. A rotating shaft is rotatably disposed on the connecting plate. A swing arm is disposed on one side of the connecting plate, and the driving end is connected to one end of the rotating shaft. A rotating device is disposed on the other side of the connecting plate, and the rotating device is drively connected to the other end of the rotating shaft. The first limiting part and the second limiting part are disposed on the side of the connecting plate facing the swing arm.

[0011] In the preferred embodiment of the above-mentioned oil mesh device, the rotating device further includes a transmission device and a motor, wherein the center line of the motor spindle is perpendicular to the center line of the rotating shaft; the transmission device includes a first bevel gear and a second bevel gear that mesh with each other, wherein the first bevel gear is driven to the main shaft of the motor, and the second bevel gear is driven to the rotating shaft.

[0012] In the preferred embodiment of the above-mentioned oil mesh device, the first outer mesh body includes a first outer plate body with the outer mesh and a first outer folded edge located at the edge of the first outer plate body. The first outer folded edge and the first outer plate body form a first receiving cavity. The first inner mesh body is disposed in the first receiving cavity. A first driving hole for the first abutting rod to pass through is provided on the first outer folded edge facing the second oil mesh assembly. The second outer mesh body includes a second outer plate body with the outer mesh and a second outer folded edge located at the edge of the second outer plate body. The second outer folded edge and the second outer plate body form a second receiving cavity. The second inner mesh body is disposed in the second receiving cavity. A second driving hole for the second abutting rod to pass through is provided on the second outer folded edge facing the first oil mesh assembly.

[0013] In the preferred embodiment of the above-mentioned oil mesh device, the oil mesh device further includes a first elastic element and a second elastic element. The first elastic element is connected to the first inner mesh body and the first outer mesh body. The first elastic element is used to drive the first inner mesh body to translate towards the second oil mesh assembly, so that the projection of the inner mesh on the first inner mesh body onto the first outer mesh body coincides with the outer mesh. The second elastic element is connected to the second inner mesh body and the second outer mesh body. The second elastic element is used to drive the second inner mesh body to translate towards the first oil mesh assembly, so that the projection of the inner mesh on the second inner mesh body onto the second outer mesh body coincides with the outer mesh.

[0014] This invention also provides a range hood, including: a housing and the aforementioned oil filter device, wherein the oil filter device is disposed on the housing.

[0015] Those skilled in the art will understand that the range hood provided in the embodiments of the present invention includes a housing and an oil filter device. The housing is provided with an air inlet, and the oil filter device is disposed at the air inlet. The oil filter device includes a first oil filter assembly and a second oil filter assembly disposed at intervals. The first oil filter assembly includes a first inner mesh body and a first outer mesh body stacked together, and the second oil filter assembly includes a second inner mesh body and a second outer mesh body stacked together. Both the first inner mesh body and the second inner mesh body have inner meshes, and both the first outer mesh body and the second outer mesh body have outer meshes. A driving device is disposed between the first oil filter assembly and the second oil filter assembly. The driving device is used to drive the first inner mesh body to translate in a direction away from the second oil filter assembly, so that the projection of the inner meshes on the first inner mesh body on the first outer mesh body is located outside the outer meshes. The driving device is also used to drive the second inner mesh body to translate in a direction away from the first oil filter assembly, so that the projection of the inner meshes on the second inner mesh body on the second outer mesh body is located outside the outer meshes. By setting it up as described above, the oil filter assembly corresponding to the burner in the off state is closed, so that the suction power of the range hood is concentrated on the oil filter assembly corresponding to the burner in the on state. Air only enters the housing from the oil filter assembly corresponding to the burner in the on state, thereby improving the range hood's suction efficiency. Attached Figure Description

[0016] The preferred embodiment of the oil filter device of the present invention will now be described with reference to the accompanying drawings and in conjunction with a range hood. The drawings are as follows:

[0017] Figure 1 is a schematic diagram of the structure of the range hood provided in an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the structure of the range hood provided in an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of the oil mesh device provided in an embodiment of the present invention;

[0020] Figure 4 is a schematic diagram of the oil mesh device provided in an embodiment of the present invention.

[0021] Figure 5 is an exploded view of the oil mesh device provided in an embodiment of the present invention;

[0022] Figure 6 is an exploded view of the oil mesh device provided in an embodiment of the present invention;

[0023] Figure 7 is a schematic diagram of the drive device provided in an embodiment of the present invention;

[0024] Figure 8 is an exploded view of the driving device provided in an embodiment of the present invention;

[0025] Figure 9 is an exploded view of the driving device provided in an embodiment of the present invention.

[0026] In the attached figures: 10, shell; 20, first oil mesh assembly; 30, second oil mesh assembly; 40, drive device; 60, connecting plate; 101, air inlet; 210, first inner mesh body; 211, first inner plate body; 212, first inner folded edge; 213, first inner mesh eyelet; 214, first sliding hole; 220, first outer mesh body; 221, first outer plate body; 222, first outer folded edge; 223, first outer mesh eyelet; 224, first drive hole; 225, first elastic element; 226, first sliding rod; 310, second inner mesh body; 311, second inner plate body; 312, second inner folded edge; 313. Second inner mesh; 314. Second sliding hole; 320. Second outer mesh body; 321. Second outer plate body; 322. Second outer folded edge; 323. Second outer mesh; 324. Second driving hole; 325. Second elastic element; 326. Second sliding rod; 410. Rotating device; 411. Rotating shaft; 412. Transmission device; 413. Motor; 420. Swing arm; 421. Drive end; 422. First abutting rod; 423. Second abutting rod; 424. First roller; 425. Second roller; 501. Limiting rod; 502. First limiting part; 503. Second limiting part. Detailed Implementation

[0027] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0028] Secondly, it should be noted that in the description of the embodiments of the present invention, the terms "inner" and "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0029] Furthermore, it should be noted that, in the description of the embodiments of the present invention, 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Range hoods are typically installed above kitchen stoves to exhaust the combustion gases and cooking fumes to the outside, thereby improving the air quality in the kitchen.

[0032] In related technologies, a range hood includes a housing, an oil filter device, and a fan. The housing has an air inlet facing the stove. The oil filter device includes a mesh body that covers the air inlet and has multiple spaced mesh openings. The fan is located inside the housing and can draw fumes and other gases from the stove into the housing through the mesh body, and then transport them outdoors to improve the air quality in the kitchen.

[0033] However, cooktops are generally equipped with multiple burners for cooking (such as two burners). During cooking, some burners are often turned on. When the range hood is working, air enters the casing through the mesh corresponding to the burner that is closed. Since the fan flow remains constant, the air flow to the mesh corresponding to the burner that is open is insufficient, resulting in poor smoke extraction.

[0034] The preferred technical solutions of the oil filter device and the range hood of the present invention will be described below in conjunction with the above-mentioned range hood.

[0035] This embodiment provides an oil filter device and a range hood. By keeping the mesh of the oil filter assembly corresponding to the burner in the closed state closed and only keeping the mesh of the oil filter assembly corresponding to the burner in the open state open, air enters the housing only through the mesh of the oil filter assembly corresponding to the burner in the open state, so as to make full use of the wind pressure of the fan to draw out the oil fumes and improve the suction efficiency of the range hood.

[0036] As shown in Figure 1, the range hood provided in this embodiment of the invention includes a housing 10 and an oil filter device. The housing 10 can be set on the upper part of the stove. As shown in Figure 2, the housing 10 is provided with an air inlet 101, which is oriented towards each burner.

[0037] The stove is usually located in the kitchen and typically has two burners spaced apart. Each burner can hold a pot for cooking. When cooking, the burners burn natural gas to heat the pot.

[0038] As shown in Figure 1, the oil mesh device provided in this embodiment of the invention includes a first oil mesh assembly 20 and a second oil mesh assembly 30 arranged at intervals. The first oil mesh assembly 20 and the second oil mesh assembly 30 are both connected to the housing 10 of the range hood, and the first oil mesh assembly 20 and the second oil mesh assembly 30 both cover the air inlet 101. Each oil mesh assembly is set facing one stove head.

[0039] As shown in Figures 3 to 6, in this embodiment, the first oil mesh assembly 20 includes a first inner mesh body 210 and a first outer mesh body 220 stacked together, and the second oil mesh assembly 30 includes a second inner mesh body 310 and a second outer mesh body 320 stacked together. For example, the first inner mesh body 210 may include a first inner plate 211 with a first inner mesh 213, and the first outer mesh body 220 may include a first outer plate 221 with a first outer mesh 223; correspondingly, the second inner mesh body 310 may include a second inner plate 311 with a second inner mesh 313, and the second outer mesh body 320 may include a second outer plate 321 with a second outer mesh 323. The first inner plate 211 and the first outer plate 221 can be bonded together, and correspondingly, the second inner plate 311 and the second outer plate 321 can be bonded together. Of course, there can also be a certain gap between the first inner plate 211 and the first outer plate 221, and correspondingly, there can also be a certain gap between the second inner plate 311 and the second outer plate 321.

[0040] For example, the first inner mesh body 210 is slidably disposed inside the first outer mesh body 220, and the second inner mesh body 310 is slidably disposed inside the second outer mesh body 320. That is, the first inner mesh body 210 is disposed between the first outer mesh body 220 and the housing 10, and the second inner mesh body 310 is disposed between the second outer mesh body 320 and the housing 10. Of course, the first outer mesh body 220 can also be disposed between the first inner mesh body 210 and the housing 10, and the second outer mesh body 320 can also be disposed between the second inner mesh body 310 and the housing 10. This embodiment is described using the example of the first inner mesh body 210 being disposed inside the first outer mesh body 220 and the second inner mesh body 310 being disposed inside the second outer mesh body 320.

[0041] The first inner mesh body 210 can be translated away from the second oil mesh assembly 30, so that the projection of the first inner mesh 213 on the first outer plate 221 is outside the first outer mesh 223, thereby preventing the first inner mesh 213 and the first outer mesh 223 from communicating. At this time, air is prevented from entering the housing 10 through the first oil mesh assembly 20. Of course, the first inner mesh body 210 can also be translated toward the second oil mesh assembly 30, so that the projection of the first inner mesh 213 on the first outer plate 221 coincides with the first outer mesh 223, thereby connecting the first inner mesh 213 and the first outer mesh 223. Oil fumes near the stove facing the first oil mesh assembly 20 can enter the housing 10 through the first outer mesh 223 and the first inner mesh 213, and then be discharged to the outside.

[0042] Similarly, the second inner mesh body 310 can be translated away from the first oil mesh assembly 20 so that the projection of the second inner mesh 313 on the second outer plate 321 is outside the second outer mesh 323, thereby preventing the second inner mesh 313 and the second outer mesh 323 from communicating. At this time, air is prevented from entering the housing 10 through the second oil mesh assembly 30. Of course, the second inner mesh body 310 can also be translated toward the first oil mesh assembly 20 so that the projection of the second inner mesh 313 on the second outer plate 321 coincides with the second outer mesh 323, thereby connecting the second inner mesh 313 and the second outer mesh 323. Oil fumes near the stove facing the second oil mesh assembly 30 can enter the housing 10 through the second outer mesh 323 and the second inner mesh 313, and then be discharged to the outside.

[0043] In this embodiment, the shapes of the first inner mesh 213, the first outer mesh 223, the second inner mesh 313, and the second outer mesh 323 can be various. For example, the first inner mesh 213 and the second inner mesh 313 can be circular mesh, rectangular mesh, etc. Correspondingly, the first outer mesh 223 can have the same shape as the first inner mesh 213, and the second outer mesh 323 can have the same shape as the second inner mesh 313.

[0044] In some embodiments, the first inner mesh 213 can be a long strip mesh, and there can be multiple first inner meshes 213 arranged in parallel and spaced intervals; correspondingly, the first outer mesh 223 is also a long strip mesh, and there can be multiple first outer meshes 223 arranged in parallel and spaced intervals; the positions of each first inner mesh 213 and first outer mesh 223 are reasonably set so that when the first inner mesh body 210 is translated relative to the first outer mesh body 220, the projection of one first inner mesh 213 on the first outer plate body 221 is located at... When the first inner mesh 213 is outside the corresponding first outer mesh 223, the projection of the other first inner mesh 213 on the first outer plate 221 is also outside the corresponding first outer mesh 223, causing the first oil mesh assembly 20 to close; similarly, when the first inner mesh 210 is translated relative to the first outer mesh 220 until the projection of one first inner mesh 213 on the first outer plate 221 coincides with the corresponding first outer mesh 223, the projection of the other first inner mesh 213 on the first outer plate 221 also coincides with the corresponding first outer mesh 223, causing the first oil mesh assembly 20 to open.

[0045] Similarly, the second inner mesh 313 can be a long strip mesh, and there can be multiple second inner meshes 313 arranged in parallel and spaced intervals; correspondingly, the second outer mesh 323 is also a long strip mesh, and there can be multiple second outer meshes 323 arranged in parallel and spaced intervals; the positions of each second inner mesh 313 and second outer mesh 323 are reasonably set so that when the second inner mesh body 310 is translated relative to the second outer mesh body 320, the projection of one second inner mesh 313 on the second outer plate body 321 is located at the corresponding When the second inner mesh 313 is outside the second outer mesh 323, the projections of the other second inner mesh 313 on the second outer plate 321 are also located outside the corresponding second outer mesh 323, causing the second oil mesh assembly 30 to close; similarly, when the second inner mesh 310 is translated relative to the second outer mesh 320 until the projection of one second inner mesh 313 on the second outer plate 321 coincides with the corresponding second outer mesh 323, the projections of the other second inner mesh 313 on the second outer plate 321 also coincide with the corresponding second outer mesh 323, causing the second oil mesh assembly 30 to open.

[0046] In the above implementation, the extension direction of the elongated mesh on the first inner plate 211 and the second inner plate 311 can form an angle with the horizontal plane. The first outer mesh 223 and the second outer mesh 323 can be symmetrically arranged to improve the decorative effect of the oil mesh device.

[0047] A driving device 40 is provided between the first oil mesh assembly 20 and the second oil mesh assembly 30. The driving device 40 can drive the first inner mesh body 210 to translate in a direction away from the second oil mesh assembly 30, so that the projection of the first inner mesh eye 213 on the first outer plate 221 is located outside the first outer mesh eye 223, thereby controlling the first oil mesh assembly 20 to close. The driving device 40 can also drive the second inner mesh body 310 to translate in a direction away from the first oil mesh assembly 20, so that the projection of the second inner mesh eye 313 on the second outer plate 321 is located outside the second outer mesh eye 323, thereby controlling the second oil mesh assembly 30 to close.

[0048] Specifically, when the range hood is off, or when the burners corresponding to the first oil filter assembly 20 and the second oil filter assembly 30 are both in the cooking state, the drive device 40 does not work. At this time, the projection of the first inner mesh 213 on the first outer plate 221 coincides with the first outer mesh 223 (the first oil filter assembly 20 is open), and the projection of the second inner mesh 313 on the second outer plate 321 coincides with the second outer mesh 323 (the second oil filter assembly 30 is open).

[0049] When cooking with only one burner, for example, the burner corresponding to the first oil mesh assembly 20 is in the cooking state, while the burner corresponding to the second oil mesh assembly 30 is closed. The drive device 40 drives the second inner mesh body 310 to translate away from the first oil mesh assembly 20, so that the projection of the second inner mesh 313 on the second outer plate 321 is outside the second outer mesh 323, thereby controlling the second oil mesh assembly 30 to close, while the first oil mesh assembly 20 is in the open state. Air enters the housing 10 only from the first oil mesh assembly 20 to make full use of the fan's air pressure to draw out the oil fumes, thereby improving the range hood's extraction efficiency.

[0050] Similarly, when the burner corresponding to the first oil mesh assembly 20 is closed, and the burner corresponding to the second oil mesh assembly 30 is in the cooking state, the drive device 40 drives the first inner mesh body 210 to move in a direction away from the second oil mesh assembly 30, so that the projection of the first inner mesh 213 on the first outer plate 221 is located outside the first outer mesh 223, thereby controlling the first oil mesh assembly 20 to be closed, while the second oil mesh assembly 30 is in the open state. Air only enters the housing 10 from the second oil mesh assembly 30 to make full use of the fan's air pressure to draw out the oil fumes, thereby improving the range hood's extraction efficiency.

[0051] The driving device may include a drive motor and a rack. The rack is slidably mounted on the housing 10. The extension direction of the rack is parallel to the translational direction of the first inner mesh body 210 or the second inner mesh body 310. The output end of the drive motor is connected to a gear. The gear meshes with the rack. The drive motor drives the gear to rotate. During the rotation of the gear, the rack is driven to translate, thereby driving the first inner mesh body 210 to translate away from the second oil mesh assembly 30, or driving the second inner mesh body 310 to translate away from the first oil mesh assembly 20.

[0052] The oil mesh device in this embodiment includes a first oil mesh assembly 20 and a second oil mesh assembly 30 arranged at intervals. The first oil mesh assembly 20 includes a first inner mesh body 210 and a first outer mesh body 220 stacked together. The second oil mesh assembly 30 includes a second inner mesh body 310 and a second outer mesh body 320 stacked together. Both the first inner mesh body 210 and the second inner mesh body 310 have inner mesh holes, and both the first outer mesh body 220 and the second outer mesh body 320 have outer mesh holes. A driving device 40 is disposed between the first oil mesh assembly 20 and the second oil mesh assembly 30. The driving device 40 is used to drive the first inner mesh body 210 to translate in a direction away from the second oil mesh assembly 30, so that the projection of the inner mesh hole on the first inner mesh body 210 onto the first outer mesh body 220 is located outside the outer mesh hole. The driving device 40 is also used to drive the second inner mesh body 310 to translate in a direction away from the first oil mesh assembly 20, so that the projection of the inner mesh hole on the second inner mesh body 310 onto the second outer mesh body 320 is located outside the outer mesh hole. In this way, the oil filter assembly corresponding to the burner in the closed state is closed, and the suction power of the range hood is concentrated on the oil filter assembly corresponding to the burner in the open state. Air only enters the housing 10 from the oil filter assembly corresponding to the burner in the open state, thereby improving the suction efficiency of the range hood.

[0053] Referring again to FIG5, in some embodiments, the drive device 40 includes a rotating device 410 and a swing arm 420. The swing arm 420 has a drive end 421 that is throttledly connected to the rotating device 410 and an abutment end that is away from the drive end 421. The abutment end has a first abutment rod 422 extending toward the first oil mesh assembly 20 and a second abutment rod 423 extending toward the second oil mesh assembly 30. The rotating device 410 is used to drive the swing arm 420 to rotate so that the first abutment rod 422 abuts against the first inner mesh body 210 in a direction away from the second oil mesh assembly 30, or the second abutment rod 423 abuts against the second inner mesh body 310 in a direction away from the first oil mesh assembly 20.

[0054] In some embodiments, the swing arm 420 can be Y-shaped, wherein the first abutting rod 422 and the second abutting rod 423 form a V-shape. A preset angle exists between the extension directions of the first abutting rod 422 and the second abutting rod 423. This preset angle can be greater than 90° and less than 180°. The angle bisector of the first abutting rod 422 and the second abutting rod 423 is parallel to the extension direction of the drive end 421. When the first abutting rod 422 abuts against the first inner mesh body 210, its extension direction is nearly parallel to the translational direction of the first inner mesh body 210, which can improve the translational stability of the first inner mesh body 210. Similarly, when the second abutting rod 423 abuts against the second inner mesh body 310, its extension direction is also nearly parallel to the translational direction of the second inner mesh body 310, which can also improve the translational stability of the second inner mesh body 310.

[0055] In other embodiments, the swing arm 420 may also be T-shaped, wherein the extension directions of the first abutment rod 422 and the second abutment rod 423 coincide, and the extension direction of the drive end 421 is perpendicular to the extension direction of the first abutment rod 422 or the second abutment rod 423.

[0056] In the above embodiment, when the burner corresponding to the first oil mesh assembly 20 is closed and the burner corresponding to the second oil mesh assembly 30 is in the cooking state, the rotating device 410 drives the swing arm 420 to rotate toward the first oil mesh assembly 20, and the first abutting rod 422 abuts against the first inner mesh body 210, causing the first inner mesh body 210 to move in a direction away from the second oil mesh assembly 30, so that the projection of the first inner mesh 213 on the first outer plate 221 is located outside the first outer mesh 223, thereby controlling the first oil mesh assembly 20 to be closed, while the second oil mesh assembly 30 is in the open state. Air only enters the housing 10 from the second oil mesh assembly 30 to make full use of the fan's wind pressure to draw out the oil fumes, thereby improving the range hood's extraction efficiency.

[0057] Conversely, when the burner corresponding to the first oil mesh assembly 20 is in the cooking state and the burner corresponding to the second oil mesh assembly 30 is closed, the rotating device 410 drives the swing arm 420 to rotate toward the second oil mesh assembly 30, and the second abutting rod 423 abuts against the second inner mesh body 310, causing the second inner mesh body 310 to move in a direction away from the first oil mesh assembly 20, so that the projection of the second inner mesh 313 on the second outer plate 321 is located outside the second outer mesh 323, thereby controlling the second oil mesh assembly 30 to close, while the first oil mesh assembly 20 is in the open state. Air only enters the housing 10 from the first oil mesh assembly 20 to make full use of the fan's wind pressure to draw out the oil fumes, thereby improving the range hood's extraction efficiency.

[0058] In some embodiments, a first roller 424 is rotatably provided at the end of the first abutting rod 422, and a second roller 425 is rotatably provided at the end of the second abutting rod 423. The first roller 424 is used to abut against the first inner mesh body 210, and the second roller 425 is used to abut against the second inner mesh body 310.

[0059] Specifically, a first receiving opening can be provided at the end of the first abutting rod 422, and a first roller 424 is located inside the first receiving opening, with the first roller 424 pivotally connected to the end of the first abutting rod 422. It should be noted that the projection of part of the first roller 424 onto the first abutting rod 422 is located outside the first abutting rod 422, so that the end of the first abutting rod 422 does not directly contact the first inner mesh body 210, but rather abuts against the first inner mesh body 210 through the first roller 424. This reduces the friction between the end of the first abutting rod 422 and the first inner mesh body 210, preventing the end of the first abutting rod 422 from directly abutting against the first inner mesh body 210 and causing abnormal noise.

[0060] Similarly, a second receiving opening can be provided at the end of the second abutment rod 423, and the second roller 425 is located inside the second receiving opening, and the second roller 425 is pivotally connected to the end of the second abutment rod 423. It should be noted that the projection of part of the second roller 425 on the second abutment rod 423 is located outside the second abutment rod 423, so that the end of the second abutment rod 423 does not directly contact the second inner mesh body 310, but abuts against the second inner mesh body 310 through the second roller 425. This can reduce the friction between the end of the second abutment rod 423 and the second inner mesh body 310, and avoid the second abutment rod 423 directly abutting against the second inner mesh body 310 and producing abnormal noise.

[0061] As shown in Figure 7, in some embodiments, the oil mesh device further includes a limiting device. The first abutting rod 422 abuts against the first inner mesh body 210 in a direction away from the second oil mesh assembly 30, so that when the projection of the inner mesh on the first inner mesh body 210 onto the first outer mesh body 220 is outside the outer mesh, the limiting device prevents the first abutting rod 422 from rotating in a direction away from the second oil mesh assembly 30. The second abutting rod 423 abuts against the second inner mesh body 310 in a direction away from the first oil mesh assembly 20, so that when the projection of the inner mesh on the second inner mesh body 310 onto the second outer mesh body 320 is outside the outer mesh, the limiting device prevents the second abutting rod 423 from rotating in a direction away from the first oil mesh assembly 20.

[0062] The oil mesh device may also include a connecting plate 60, which is disposed between the first oil mesh assembly 20 and the second oil mesh assembly 30. The swing arm 420 and the limiting device are disposed on one side of the connecting plate 60, and the rotating device 410 is disposed on the other side of the connecting plate 60.

[0063] Referring again to Figures 6 and 9, in some embodiments, the limiting device may include a limiting rod 501 extending from the drive end 421 in a direction away from the abutting end. Referring again to Figures 3, 5, and 8, a first limiting portion 502 is provided between the limiting rod 501 and the first oil mesh assembly 20, and a second limiting portion 503 is provided between the limiting rod 501 and the second oil mesh assembly 30. The first abutting rod 422 abuts against the first inner mesh body 210 in a direction away from the second oil mesh assembly 30, so that when the projection of the inner mesh on the first inner mesh body 210 onto the first outer mesh body 220 is outside the outer mesh, the limiting rod 501 abuts against the second limiting portion 503. The second abutting rod 423 abuts against the second inner mesh body 310 in a direction away from the first oil mesh assembly 20, so that when the projection of the inner mesh on the second inner mesh body 310 onto the second outer mesh body 320 is outside the outer mesh, the limiting rod 501 abuts against the first limiting portion 502.

[0064] The limiting rod 501 can be located at the bottom of the drive end 421. The center line of the limiting rod 501 can be parallel to the connecting plate 60 or perpendicular to the connecting plate 60. The first limiting part 502 and the second limiting part 503 can be block-shaped, column-shaped, etc., and the first limiting part 502 and the second limiting part 503 can be located on the side of the connecting plate 60 facing the swing arm 420.

[0065] When the first abutting rod 422 abuts against the first inner mesh body 210 in a direction away from the second oil mesh assembly 30, so that the projection of the inner mesh on the first inner mesh body 210 onto the first outer mesh body 220 is outside the outer mesh (the first oil mesh assembly 20 is closed), the limiting rod 501 abuts against the second limiting part 503, thereby preventing the first abutting rod 422 from continuing to rotate in a direction away from the second oil mesh assembly 30. This prevents the first inner mesh body 210 from continuing to translate in a direction away from the second oil mesh assembly 30 when the first oil mesh assembly 20 is in the closed state, thus making the opening or closing of the first oil mesh assembly 20 easier to control.

[0066] Similarly, when the second abutting rod 423 abuts the second inner mesh body 310 in a direction away from the first oil mesh assembly 20, so that the projection of the inner mesh on the second inner mesh body 310 onto the second outer mesh body 320 is outside the outer mesh (the second oil mesh assembly 30 is closed), the limiting rod 501 abuts against the first limiting part 502, thereby preventing the second abutting rod 423 from continuing to rotate in a direction away from the first oil mesh assembly 20. This prevents the second inner mesh body 310 from continuing to translate in a direction away from the first oil mesh assembly 20 when the second oil mesh assembly 30 is in the closed state, thus making the opening or closing of the second oil mesh assembly 30 easier to control.

[0067] In other embodiments, the limiting device may further include a limiting ring disposed on the connecting plate 60, the center line of which is perpendicular to the connecting plate 60. The limiting ring may be semi-circular, having an arc-shaped sidewall. The opening of the arc-shaped sidewall has a first limiting end and a second limiting end at its two ends, respectively. The first limiting end is near the first oil mesh assembly 20, and the second limiting end is near the second oil mesh assembly 30. The limiting ring may be disposed between the connecting plate 60 and the swing arm 420, and may be integrally formed with the connecting plate 60. A limiting block is provided on the side of the swing arm 420 facing the limiting ring.

[0068] When the first abutting rod 422 abuts the first inner mesh body 210 in a direction away from the second oil mesh assembly 30, so that the projection of the inner mesh on the first inner mesh body 210 onto the first outer mesh body 220 is outside the outer mesh (the first oil mesh assembly 20 is closed), the limiting block abuts against the first limiting end, thereby preventing the first abutting rod 422 from continuing to rotate in a direction away from the second oil mesh assembly 30. This prevents the first inner mesh body 210 from continuing to translate in a direction away from the second oil mesh assembly 30 when the first oil mesh assembly 20 is in the closed state, thus making the opening or closing of the first oil mesh assembly 20 easy to control.

[0069] Similarly, when the second abutting rod 423 abuts the second inner mesh body 310 in a direction away from the first oil mesh assembly 20, so that the projection of the inner mesh on the second inner mesh body 310 onto the second outer mesh body 320 is outside the outer mesh (the second oil mesh assembly 30 is closed), the limiting block abuts against the second limiting end, thereby preventing the second abutting rod 423 from continuing to rotate in a direction away from the first oil mesh assembly 20. This prevents the second inner mesh body 310 from continuing to translate in a direction away from the first oil mesh assembly 20 when the second oil mesh assembly 30 is in the closed state, thus making the opening or closing of the second oil mesh assembly 30 easy to control.

[0070] In an embodiment where the oil mesh device also includes a connecting plate 60, which is disposed between the first oil mesh assembly 20 and the second oil mesh assembly 30, a rotating shaft 411 is rotatably disposed on the connecting plate 60, a swing arm 420 is disposed on one side of the connecting plate 60, and a drive end 421 is connected to one end of the rotating shaft 411, a rotating device 410 is disposed on the other side of the connecting plate 60, and the rotating device 410 is drively connected to the other end of the rotating shaft 411; a first limiting part 502 and a second limiting part 503 are disposed on the side of the connecting plate 60 facing the swing arm 420.

[0071] The rotating device 410 drives the rotating shaft 411 to rotate, which in turn drives the swing arm 420 to rotate. When the first oil mesh assembly 20 needs to be closed, the rotating device 410 drives the swing arm 420 to rotate toward the first oil mesh assembly 20, and the first abutting rod 422 abuts the first inner mesh body 210 in a direction away from the second oil mesh assembly 30, so that the projection of the first inner mesh 213 on the first outer plate 221 is located outside the first outer mesh 223 (the first oil mesh assembly 20 is closed). Similarly, when the second oil mesh assembly 30 needs to be closed, the rotating device 410 drives the swing arm 420 to rotate toward the second oil mesh assembly 30, and the second abutting rod 423 abuts the second inner mesh body 310 in a direction away from the first oil mesh assembly 20, so that the projection of the second inner mesh 313 on the first outer plate 221 is located outside the second outer mesh 323 (the second oil mesh assembly 30 is closed).

[0072] In this embodiment, the rotating device 410 and the swing arm 420 are connected by a rotating shaft 411, which is simple in structure.

[0073] In some embodiments, the rotating device 410 further includes a transmission device 412 and a motor 413, wherein the center line of the main shaft of the motor 413 is perpendicular to the center line of the rotating shaft 411; the transmission device 412 includes a first bevel gear and a second bevel gear that mesh with each other, wherein the first bevel gear is driven to the main shaft of the motor 413 and the second bevel gear is driven to the rotating shaft 411.

[0074] The centerline of the motor 413 spindle is parallel to the connecting plate 60, and the centerline of the rotating shaft 411 is perpendicular to the connecting plate 60. The first bevel gear can be sleeved on the motor 413 spindle, and the second bevel gear can be sleeved on the end of the rotating shaft 411 away from the swing arm 420. The first bevel gear and the second bevel gear mesh, thereby reducing the space occupied by the motor 413 in the direction perpendicular to the connecting plate 60.

[0075] Of course, the rotating device 410 may also include a motor 413, the center line of the rotating shaft 411 is perpendicular to the connecting plate 60, one end of the rotating shaft 411 is connected to the drive end 421 of the swing arm 420, and the other end of the rotating shaft 411 is connected to the output end of the motor 413. The center line of the main shaft of the motor 413 is collinear with the center line of the rotating shaft 411, thereby simplifying the structure of the rotating device 410.

[0076] In an embodiment where the first outer mesh body 220 includes a first outer plate 221 with a first outer mesh 223 and the second outer mesh body 320 includes a second outer plate 321 with a second outer mesh 323, the first outer mesh body 220 further includes a first outer folded edge 222 located at the edge of the first outer plate 221. The first outer folded edge 222 and the first outer plate 221 form a first receiving cavity. The first inner mesh body 210 is disposed within the first receiving cavity. A first driving hole 224 for the first abutting rod 422 to pass through is provided on the first outer folded edge 222 facing the second oil mesh assembly 30. Similarly, the second outer mesh body 320 further includes a second outer folded edge 322 located at the edge of the second outer plate 321. The second outer folded edge 322 and the second outer plate 321 form a second receiving cavity. The second inner mesh body 310 is disposed within the second receiving cavity. A second driving hole 324 for the second abutting rod 423 to pass through is provided on the second outer folded edge 322 facing the first oil mesh assembly 20.

[0077] The first inner mesh body 210 is housed within the first accommodating cavity, and the second inner mesh body 310 is housed within the second accommodating cavity. This improves the structural compactness of the oil mesh device and prevents either the first inner mesh body 210 or the second inner mesh body 310 from contacting external objects during translation. Simultaneously, the first abutting rod 422 passes through the first driving hole 224 and abuts against the first inner mesh body 210, while the second abutting rod 423 passes through the second driving hole 324 and abuts against the second inner mesh body 310, further simplifying the overall structure of the oil mesh device.

[0078] In some embodiments, the oil mesh device further includes a first elastic element 225 and a second elastic element 325. The first elastic element 225 is connected to the first inner mesh body 210 and the first outer mesh body 220. The first elastic element 225 is used to drive the first inner mesh body 210 to translate toward the second oil mesh assembly 30 so that the projection of the first inner mesh 213 on the first outer plate body 221 coincides with the first outer mesh 223. The second elastic element 325 is connected to the second inner mesh body 310 and the second outer mesh body 325. The second elastic element 325 is used to drive the second inner mesh body 310 to translate toward the first oil mesh assembly 20 so that the projection of the second inner mesh 313 on the second outer plate body 321 coincides with the second outer mesh 323.

[0079] The first elastic element 225 is used to drive the first inner mesh body 210 to translate toward the second oil mesh assembly 30 when the driving device 40 removes the driving force on the first inner mesh body 210, so that the projection of the first inner mesh 213 on the first outer plate 221 coincides with the first outer mesh 223 (the first oil mesh assembly 20 opens). Similarly, the second elastic element 325 is used to drive the second inner mesh body 310 to translate toward the first oil mesh assembly 20 when the driving device 40 removes the driving force on the second inner mesh body 310, so that the projection of the second inner mesh 313 on the second outer plate 321 coincides with the second outer mesh 323 (the second oil mesh assembly 30 opens).

[0080] Specifically, a first sliding rod 226 can be provided between the first outer folded edge 222 facing away from the second oil mesh assembly 30 and the first outer folded edge 222 facing towards the second oil mesh assembly 30. The first sliding rod 226 can be connected to the first outer folded edge 222 facing away from the second oil mesh assembly 30 by bolts. Of course, the first sliding rod 226 can also be connected to the first outer folded edge 222 facing away from the second oil mesh assembly 30 by welding or riveting, etc. This embodiment does not limit this. The first inner mesh body 210 also includes a first inner folded edge 212 located at the edge of the first inner plate body 211, and the first inner folded edge 212 faces away from the first outer plate body 221. There can be multiple first slide rods 226 (such as two or three), and these multiple first slide rods 226 are spaced apart along a direction perpendicular to the translational direction of the first inner mesh body 210. The first inner folded edge 212 is provided with a first sliding hole 214 corresponding to each first slide rod 226, and each first slide rod 226 passes through the corresponding first sliding hole 214. This arrangement improves the translational stability of the first inner mesh body 210. It is worth noting that the projection of the first slide rod 226 on the first outer plate 221 is located outside the first outer mesh 223, preventing the first slide rod 226 from blocking oil fumes from passing through the first outer mesh 223 and the first inner mesh 213. Furthermore, the first slide rod 226 is difficult to observe from the outside of the range hood, which enhances the decorative effect of the range hood.

[0081] The first elastic element 225 may include a spring or a rubber sleeve, etc. The first elastic element 225 can be disposed between the first outer folded edge 222 and the first inner folded edge 212 of the second oil mesh assembly 30, respectively. Both ends of the first elastic element 225 abut against the first outer folded edge 222 and the first inner folded edge 212 of the second oil mesh assembly 30, respectively. Furthermore, the centerline of the first elastic element 225 is parallel to the translational direction of the first inner mesh body 210. The first elastic element 225 can be disposed among multiple first sliding rods 226. Alternatively, the first elastic element 225 can be sleeved on the first sliding rods 226, which can both fix the first elastic element 225 and simplify the structure for easier installation.

[0082] When the burner corresponding to the first oil filter assembly 20 is in the off state, and the burner corresponding to the second oil filter assembly 30 is in the cooking state, the rotating device 410 drives the swing arm 420 to rotate toward the first oil filter assembly 20, and the first abutting rod 422 abuts the first inner mesh body 210 in a direction away from the second oil filter assembly 30, so that the projection of the first inner mesh 213 on the first outer plate 221 is located outside the first outer mesh 223 (the first oil filter assembly 20 is closed). At this time, the second oil filter assembly 30 is open, and air only enters the housing 10 from the second oil filter assembly 30 to make full use of the fan's wind pressure to draw out the oil fumes, thereby improving the range hood's extraction efficiency. At this time, if the burner corresponding to the first oil mesh assembly 20 switches from the off state to the cooking state, or the burner corresponding to the second oil mesh assembly 30 switches from the cooking state to the off state, the first elastic element 225 undergoes elastic deformation. The rotating device 410 removes the driving force on the first inner mesh body 210. Due to the elastic deformation, the first elastic element 225 has elastic force, causing it to abut against the first inner folded edge 212 away from the second oil mesh assembly 30 and drive the first inner mesh body 210 to translate towards the second oil mesh assembly 30. This causes the projection of the first inner mesh 213 on the first outer plate 221 to coincide with the first outer mesh 223, thereby restoring the first oil mesh assembly 20 to the open state. Compared with driving the first inner mesh body 210 to translate via the rotating device 410, the first elastic element 225 can reduce the power consumption of the oil mesh device, making it energy-saving and environmentally friendly.

[0083] Similarly, a second sliding rod 326 can be provided between the second outer folded edge 322 facing away from the first oil mesh assembly 20 and the second outer folded edge 322 facing towards the first oil mesh assembly 20. The second sliding rod 326 can be connected to the second outer folded edge 322 facing away from the first oil mesh assembly 20 by bolts. Of course, the second sliding rod 326 can also be connected to the second outer folded edge 322 facing away from the first oil mesh assembly 20 by welding or riveting, etc. This embodiment does not limit this. The second inner mesh body 310 also includes a second inner folded edge 312 located at the edge of the second inner plate body 311, and the second inner folded edge 312 faces away from the second outer plate body 321. There can be multiple second slide rods 326 (e.g., two, two, etc.). These multiple second slide rods 326 are spaced apart along a direction perpendicular to the translational direction of the second inner mesh body 310. The second inner folded edge 312 is provided with a second sliding hole 314 corresponding to each second slide rod 326. Each second slide rod 326 passes through the corresponding second sliding hole 314. This arrangement improves the translational stability of the second inner mesh body 310. It is worth noting that the projection of the second slide rod 326 on the second outer plate 321 is located outside the second outer mesh 323, preventing the second slide rod 326 from obstructing the passage of oil fumes through the second outer mesh 323 and the second inner mesh 313. Furthermore, the second slide rod 326 is difficult to observe from the outside of the range hood, thus enhancing the decorative effect of the range hood.

[0084] The second elastic element 325 may include a spring or a rubber sleeve, etc. The second elastic element 325 can be disposed between the second outer folded edge 322 and the second inner folded edge 312 away from the first oil mesh assembly 20. Both ends of the second elastic element 325 abut against the second outer folded edge 322 and the second inner folded edge 312 away from the first oil mesh assembly 20, respectively. Furthermore, the centerline of the second elastic element 325 is parallel to the translational direction of the second inner mesh body 310. The second elastic element 325 can be disposed among multiple second sliding rods 326. Alternatively, the second elastic element 325 can be sleeved on the second sliding rods 326, which can both fix the second elastic element 325 and simplify the structure for easier installation.

[0085] When the burner corresponding to the second oil mesh assembly 30 is in the off state, and the burner corresponding to the first oil mesh assembly 20 is in the cooking state, the rotating device 410 drives the swing arm 420 to rotate toward the second oil mesh assembly 30, and the second abutting rod 423 abuts the second inner mesh body 310 in a direction away from the first oil mesh assembly 20, so that the projection of the second inner mesh 313 on the second outer plate 321 is located outside the second outer mesh 323 (the second oil mesh assembly 30 is closed). At this time, the first oil mesh assembly 20 is open, and air only enters the housing 10 from the first oil mesh assembly 20 to make full use of the fan's wind pressure to suck up the oil fumes, thereby improving the range hood's suction efficiency. At this time, if the burner corresponding to the second oil mesh assembly 30 switches from the off state to the cooking state, or the burner corresponding to the first oil mesh assembly 20 switches from the cooking state to the off state, the second elastic element 325 undergoes elastic deformation. The rotating device 410 removes the driving force on the second inner mesh body 310. Due to the elastic deformation, the second elastic element 325 has elastic force, causing it to abut against the second inner folded edge 312 away from the first oil mesh assembly 20 and drive the second inner mesh body 310 to translate towards the first oil mesh assembly 20. This causes the projection of the second inner mesh 313 on the second outer plate 321 to coincide with the second outer mesh 323, thereby restoring the second oil mesh assembly 30 to the open state. Compared with driving the second inner mesh body 310 to translate via the rotating device 410, the second elastic element 325 can reduce the power consumption of the oil mesh device, making it energy-saving and environmentally friendly.

[0086] In summary, the range hood in this embodiment of the invention includes a housing 10, on which an air inlet 101 is provided. An oil filter device is disposed at the air inlet 101. The oil filter device includes a first oil filter assembly 20 and a second oil filter assembly 30 arranged at intervals. The first oil filter assembly 20 includes a first inner mesh body 210 and a first outer mesh body 220 stacked together. The second oil filter assembly 30 includes a second inner mesh body 310 and a second outer mesh body 320 stacked together. Both the first inner mesh body 210 and the second inner mesh body 310 have inner mesh openings, and the first outer mesh body 220 and the second outer mesh body 320 have inner mesh openings. Each inner mesh body 320 has an outer mesh. A drive device 40 is disposed between the first oil mesh assembly 20 and the second oil mesh assembly 30. The drive device 40 is used to drive the first inner mesh body 210 to translate away from the second oil mesh assembly 30, so that the projection of the inner mesh on the first inner mesh body 210 onto the first outer mesh body 220 is outside the outer mesh. The drive device 40 is also used to drive the second inner mesh body 310 to translate away from the first oil mesh assembly 20, so that the projection of the inner mesh on the second inner mesh body 310 onto the second outer mesh body 320 is outside the outer mesh. Through the above settings, the oil mesh assembly corresponding to the burner in the closed state is closed, so that the suction power of the range hood is concentrated at the oil mesh assembly corresponding to the burner in the open state. Air only enters the housing 10 from the oil mesh assembly corresponding to the burner in the open state, thereby improving the suction efficiency of the range hood.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil mesh device, characterized in that, include: A first oil mesh assembly and a second oil mesh assembly are spaced apart. The first oil mesh assembly includes a first inner mesh body and a first outer mesh body stacked together. The second oil mesh assembly includes a second inner mesh body and a second outer mesh body stacked together. Both the first and second inner mesh bodies have inner mesh openings, and both the first and second outer mesh bodies have outer mesh openings. A driving device is disposed between the first and second oil mesh assemblies. The driving device is used to drive the first inner mesh body to translate in a direction away from the second oil mesh assembly, so that the projection of the inner mesh opening on the first inner mesh body onto the first outer mesh body is located outside the outer mesh opening. The driving device is also used to drive the second inner mesh body to translate in a direction away from the first oil mesh assembly, so that the projection of the inner mesh opening on the second inner mesh body onto the second outer mesh body is located outside the outer mesh opening. The driving device includes a swing arm, which has a driving function. The device includes an end and a stop point away from the drive end, the stop point having a first stop rod extending towards the first oil mesh assembly and a second stop rod extending towards the second oil mesh assembly, the extension directions of the first stop rod and the second stop rod having a preset angle, the preset angle being greater than 90° and less than 180°; a limiting device, wherein when the first stop rod abuts against the first inner mesh body in a direction away from the second oil mesh assembly, so that the projection of the inner mesh eye on the first inner mesh body onto the first outer mesh body is outside the outer mesh eye, the limiting device prevents the first stop rod from rotating in a direction away from the second oil mesh assembly; and when the second stop rod abuts against the second inner mesh body in a direction away from the first oil mesh assembly, so that the projection of the inner mesh eye on the second inner mesh body onto the second outer mesh body is outside the outer mesh eye, the limiting device prevents the second stop rod from rotating in a direction away from the first oil mesh assembly.

2. The oil mesh device according to claim 1, characterized in that, The driving device further includes a rotating device, which is tractively connected to the driving end. The rotating device is used to drive the swing arm to rotate so that the first abutting rod abuts against the first inner mesh body in a direction away from the second oil mesh assembly, or the second abutting rod abuts against the second inner mesh body in a direction away from the first oil mesh assembly.

3. The oil mesh device according to claim 2, characterized in that, The first abutment rod has a first roller rotatably mounted at its end, and the second abutment rod has a second roller rotatably mounted at its end.

4. The oil mesh device according to claim 2, characterized in that, The limiting device includes a limiting rod extending from the driving end in a direction away from the abutting end. A first limiting portion is provided between the limiting rod and the first oil mesh assembly, and a second limiting portion is provided between the limiting rod and the second oil mesh assembly. The first abutting rod abuts against the first inner mesh body in a direction away from the second oil mesh assembly, such that when the projection of the inner mesh on the first inner mesh body onto the first outer mesh body is outside the outer mesh, the limiting rod abuts against the second limiting portion. The second abutting rod abuts against the second inner mesh body in a direction away from the first oil mesh assembly, such that when the projection of the inner mesh on the second inner mesh body onto the second outer mesh body is outside the outer mesh, the limiting rod abuts against the first limiting portion.

5. The oil mesh device according to claim 4, characterized in that, The oil mesh device further includes a connecting plate, which is disposed between the first oil mesh assembly and the second oil mesh assembly. A rotating shaft is rotatably disposed on the connecting plate. A swing arm is disposed on one side of the connecting plate, and the driving end is connected to one end of the rotating shaft. A rotating device is disposed on the other side of the connecting plate, and the rotating device is drively connected to the other end of the rotating shaft. The first limiting part and the second limiting part are disposed on the side of the connecting plate facing the swing arm.

6. The oil mesh device according to claim 5, characterized in that, The rotating device also includes a transmission device and a motor, with the center line of the motor spindle perpendicular to the center line of the rotating shaft; the transmission device includes a first bevel gear and a second bevel gear that mesh with each other, the first bevel gear being driven to the motor spindle and the second bevel gear being driven to the rotating shaft.

7. The oil mesh device according to claim 2, characterized in that, The first outer mesh body includes a first outer plate body with the outer mesh and a first outer folded edge located at the edge of the first outer plate body. The first outer folded edge and the first outer plate body form a first receiving cavity. The first inner mesh body is disposed in the first receiving cavity. A first driving hole for the first abutting rod to pass through is provided on the first outer folded edge facing the second oil mesh assembly. The second outer mesh body includes a second outer plate body with the outer mesh and a second outer folded edge located at the edge of the second outer plate body. The second outer folded edge and the second outer plate body form a second receiving cavity. The second inner mesh body is disposed in the second receiving cavity. A second driving hole for the second abutting rod to pass through is provided on the second outer folded edge facing the first oil mesh assembly.

8. The oil mesh device according to any one of claims 1 to 7, characterized in that, The oil mesh device further includes a first elastic element and a second elastic element. The first elastic element is connected to the first inner mesh body and the first outer mesh body. The first elastic element is used to drive the first inner mesh body to translate towards the second oil mesh assembly so that the projection of the inner mesh on the first inner mesh body onto the first outer mesh body coincides with the outer mesh. The second elastic element is connected to the second inner mesh body and the second outer mesh body. The second elastic element is used to drive the second inner mesh body to translate towards the first oil mesh assembly so that the projection of the inner mesh on the second inner mesh body onto the second outer mesh body coincides with the outer mesh.

9. A range hood, characterized in that, It includes a housing and an oil mesh device as described in any one of claims 1 to 8, wherein the oil mesh device is disposed on the housing.

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