Range hood

Abstract

The present invention provides an oil fume extractor, which relates to the technical field of kitchen appliances. When the oil fume extractor switches from a non-working state to a working state, the smoke baffle flips upward to block the rising flue gas; the oil mesh assembly swings forward and downward. On the one hand, the front wall has a forward smoke inlet closer to the cooking appliance, improving the smoke extraction effect; on the other hand, the top wall swung out from the assembly port is located below the smoke baffle, and the top smoke inlet is close to the smoke baffle, which can absorb the oil fume blocked by the smoke baffle. Therefore, the problem that the oil fume escapes from the gap between the smoke baffle and the smoke collecting hood during the operation of the oil fume extractor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and particularly to an oil fume extractor. Background Art

[0002] During the operation of an oil fume extractor, due to the limitation of the size of the air inlet of the oil fume extractor, the phenomenon of oil fume escaping often occurs. Especially for a side-suction type oil fume extractor, the size of the air inlet matches the size of the oil mesh. When the oil fume is too large, some oil fume cannot be sucked into the interior of the oil fume extractor in time and will escape to both sides. At the same time, the angle of the air inlet is fixed and the distance from the cooking stove cannot be adjusted, which will also affect the smoking effect; limited by the moving mechanism, there must be a gap between the opened panel glass and the smoke collecting hood to ensure that there is no interference during the operation of the moving mechanism, and some oil fume will escape from the gap between the opened panel glass and the smoke collecting hood. Summary of the Invention

[0003] The purpose of the present invention is to provide an oil fume extractor to alleviate the technical problem that oil fume escapes from the gap between the glass panel and the smoke collecting hood when the existing oil fume extractor is working.

[0004] In a first aspect, an oil fume extractor provided by the present invention includes:

[0005] A smoke collecting hood with an assembly opening on its front surface;

[0006] The oil fume extractor further includes a smoke baffle connected to the smoke collecting hood and located in front of the assembly opening;

[0007] The oil fume extractor further includes an oil mesh assembly assembled in the assembly opening; the oil mesh assembly includes: a front wall hinged to the smoke collecting hood at the lower part, and there is a front air inlet on the front wall; the oil mesh assembly includes a top wall connected to the upper part of the front wall, and there is a top air inlet on the top wall; in the front-back direction, the oil mesh assembly can swing between a first swing state and a second swing state. In the first swing state, the top air inlet is located inside the smoke collecting hood; in the second swing state, the top air inlet is located outside the smoke collecting hood and below the opened smoke baffle.

[0008] Further, the oil mesh assembly includes: a main oil mesh;

[0009] The oil mesh assembly further includes a side oil mesh slidably connected to the main oil mesh in the left-right direction;

[0010] The oil mesh assembly further includes a side driving module for driving the side oil mesh to slide relative to the main oil mesh;

[0011] The side oil mesh has a first sliding state and a second sliding state. In the first sliding state, the main oil mesh and the side oil mesh are arranged side by side in the left-right direction; in the second sliding state, the main oil mesh and the side oil mesh are arranged along the front-back direction.

[0012] Further, the main oil screen includes a first top wall, and the side oil screen includes a second top wall. There are top air inlet openings on both the first top wall and the second top wall.

[0013] Further, a first guide rail extending in the left - right direction is provided on the main oil screen; a first sliding groove extending in the left - right direction and slidably connected to the first guide rail is provided on the side oil screen;

[0014] A stop structure is provided on the first guide rail, and the stop structure is used to prevent the side oil screen from generating relative movement relative to the main oil screen in the front - rear direction.

[0015] Further, the side drive module includes:

[0016] A drive part connected to the smoke collecting hood;

[0017] The side drive module includes a push rod connected to the drive part and capable of telescoping in the left - right direction; a first connection structure is provided at the end of the push rod;

[0018] A second connection structure connected to the first connection structure is provided on the side oil screen. The first connection structure and the second connection structure cooperate to enable the push rod and the side oil screen to generate relative movement in the front - rear swing direction and be relatively fixed in the left - right direction.

[0019] Further, the first connection structure includes: a second guide rail; a protrusion is provided on the side of the second guide rail facing away from the main oil screen;

[0020] The first connection structure includes a connecting member connecting the protrusion and the push rod;

[0021] A fixed side plate is provided on the side of the main oil screen; the connecting member and the second guide rail are respectively located on opposite sides of the fixed side plate;

[0022] A second sliding groove extending in the swing direction of the main oil screen is provided on the fixed side plate; the protrusion is located in the second sliding groove and is slidably connected to the second sliding groove.

[0023] Further, a telescopic plate connected between the push rod and the first connection structure is further included; the telescopic plate can block part of the assembly opening when the side oil screen is in the second sliding state.

[0024] Further, the telescopic plate further includes a storage cavity connected to the smoke collecting hood, the drive part is connected to the outer wall of the storage cavity, the side of the storage cavity facing the main oil screen has an opening, and the telescopic plate is slidably connected inside the storage cavity and can slide in or out from the opening.

[0025] Further, a first oil hole is provided on the front side of the main oil screen;

[0026] A second oil hole is provided on the front side of the side oil screen;

[0027] In the second sliding state, the centers of the first oil hole and the second oil hole are aligned, and the area of the second oil hole is smaller than that of the first oil hole.

[0028] Furthermore, the oil mesh assembly includes: a main oil mesh, and side oil meshes located on the left side and / or the right side of the main oil mesh;

[0029] In the main oil mesh and the side oil meshes, the lower part of one of them is hinged to the smoke collecting hood.

[0030] Furthermore, side air inlets are provided on the left side wall and / or the right side wall of the one that swings relative to the smoke collecting hood among the main oil mesh and the side oil meshes.

[0031] Furthermore, the oil mesh assembly includes: a main oil mesh;

[0032] The oil mesh assembly includes side oil meshes that are slidably connected to the main oil mesh in the left-right direction; the side oil meshes include: a framework that is slidably connected to the main oil mesh; the side oil meshes include a folding mesh body with one side connected to the framework and the other side connected to the side wall of the main oil mesh.

[0033] The oil mesh assembly includes a side drive module for driving the framework to slide relative to the main oil mesh;

[0034] The side drive module drives the framework to move towards or away from the main oil mesh, so that the side oil mesh switches between the first sliding state and the second sliding state. In the first sliding state, the folding mesh body is unfolded; in the second sliding state, the folding mesh body is contracted.

[0035] The range hood provided by the present invention includes: a smoke collecting hood with an assembly port on the front surface, and a smoke baffle connected to the smoke collecting hood and located in front of the assembly port. The range hood includes an oil mesh assembly assembled in the assembly port. The oil mesh assembly includes: a front wall with its lower part hinged to the smoke collecting hood, and a front air inlet is provided on the front wall; the oil mesh assembly includes a top wall connected to the upper part of the front wall, and a top air inlet is provided on the top wall; in the front-rear direction, the oil mesh assembly can swing between a first swinging state and a second swinging state. In the first swinging state, the top air inlet is located inside the smoke collecting hood; in the second swinging state, the top air inlet is located outside the smoke collecting hood and below the opened smoke baffle. When the range hood switches from the non-working state to the working state, the smoke baffle blocks the rising flue gas; the oil mesh assembly swings forward and downward. On the one hand, the front air inlet on the front wall is closer to the cooking appliance, can absorb the cooking fumes earlier, reduce the escape of cooking fumes, and improve the smoking effect; on the other hand, the top wall swung out from the assembly port is located below the smoke baffle, and the top air inlet is close to the smoke baffle, and can absorb the cooking fumes blocked by the smoke baffle. Therefore, the problem of cooking fumes escaping from the gap between the smoke baffle and the smoke collecting hood during the operation of the range hood is improved. Description of the Drawings

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1 Schematic diagram of the oil mesh assembly of the range hood provided in Embodiment 1 of the present invention in the first swinging state;

[0038] Figure 2 Schematic diagram of the oil mesh assembly of the range hood provided in Embodiment 1 of the present invention in the second swinging state;

[0039] Figure 3 For Figure 1 Internal structure schematic diagram of the state of the range hood in

[0040] Figure 4 Schematic diagram of the main oil mesh of the range hood provided in Embodiment 1 of the present invention;

[0041] Figure 5 Schematic diagram of the side oil mesh of the range hood provided in Embodiment 1 of the present invention;

[0042] Figure 6 Schematic diagram of the sliding connection between the main oil mesh and the side oil mesh of the range hood provided in Embodiment 1 of the present invention;

[0043] Figure 7 Cross-sectional view of the oil mesh assembly and the swinging drive mechanism of the range hood provided in Embodiment 1 of the present invention;

[0044] Figure 8 Schematic diagram of the main oil mesh and the side oil mesh of the range hood provided in Embodiment 1 of the present invention after overlapping;

[0045] Figure 9 Schematic diagram of the connection between the side drive module and the side oil mesh of the range hood provided in Embodiment 1 of the present invention;

[0046] Figure 10 For Figure 9 Exploded view of the side drive module and the side oil mesh in

[0047] Figure 11 Schematic diagram of the side drive module of the range hood provided in Embodiment 1 of the present invention;

[0048] Figure 12 Schematic diagram of a range hood provided in Embodiment 2 of the present invention;

[0049] Figure 13 For Figure 12Schematic diagram of the main oil net of the range hood;

[0050] Figure 14 is Figure 12 Schematic diagram of the side oil net of the range hood;

[0051] Figure 15 is Figure 12 Schematic diagram of the main oil net and the side oil net when the main oil net of the range hood is in the second swing state;

[0052] Figure 16 is Figure 15 Schematic diagram of another perspective of the main oil net and the side oil net;

[0053] Figure 17 is Figure 12 Side view of the side oil net of the range hood;

[0054] Figure 18 is Figure 12 Side view of the main oil net of the range hood;

[0055] Figure 19 is Figure 12 Side view of the main oil net and the side oil net when the main oil net of the range hood is in the first swing state;

[0056] Figure 20 is Figure 12 Side view of the main oil net and the side oil net when the main oil net of the range hood is in the second swing state;

[0057] Figure 21 Schematic diagram of another range hood provided in Embodiment 2 of the present invention;

[0058] Figure 22 is Figure 21 Schematic diagram of the side oil net of the range hood in the first swing state;

[0059] Figure 23 is Figure 21 Schematic diagram of the side oil net and the main oil net of the range hood in the front and back states;

[0060] Figure 24 Schematic diagram of the range hood provided in Embodiment 3 of the present invention.

[0061] Icon: 100 - smoke collecting hood;

[0062] 200 - baffle;

[0063] 300 - Oil screen assembly; 310 - Main oil screen; 311 - First top wall; 312 - First front wall; 313 - First side smoke inlet; 314 - First front smoke inlet; 320 - Side oil screen; 321 - Second top wall; 322 - Second front wall; 323 - Second front smoke inlet; 324 - Second side smoke inlet; 325 - Perimeter edge; 326 - Diversion cavity; 330 - Top smoke inlet; 340 - Front smoke inlet; 350 - Rotating shaft;

[0064] 410 - First guide rail; 411 - Stop structure; 420 - First chute;

[0065] 500 - Swing drive mechanism; 510 - Push rod motor; 520 - Connecting rod;

[0066] 610 - Push rod; 620 - Second guide rail; 621 - Projection; 630 - Connecting piece; 640 - Fixed side plate; 6'41 - Second chute; 650 - Third chute; 660 - Telescopic plate; 670 - Storage cavity;

[0067] 710 - First oil hole; 720 - Second oil hole;

[0068] 910 - Framework; 920 - Folding mesh body. Detailed implementation manners

[0069] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0070] Embodiment 1

[0071] As Figure 1 and Figure 2 shown, the range hood provided by the present invention includes: a smoke collecting hood 100 with an assembly port on its front surface. In this embodiment, the range hood is a side - suction range hood, the front surface of which is inclined, and the assembly port is located at the middle position of the front surface.

[0072] The range hood further includes: a smoke baffle 200 hinged to the front surface of the smoke collecting hood 100 at the upper part, and the hinged position of the smoke baffle 200 is above the assembly port. When the range hood is working, the smoke baffle 200 swings in front of the oil screen assembly 300 and has a certain angle with the front surface of the smoke collecting hood 100; after the range hood finishes working, the smoke baffle 200 can be swung downwards and flipped so that the smoke baffle 200 is parallel to the front surface of the smoke collecting hood 100 and covers the oil screen assembly 300.

[0073] As Figure 3As shown, the range hood further includes an oil screen assembly 300 assembled in the assembly port. The oil screen assembly 300 includes: a front wall hinged to the smoke collecting hood 100 at the lower part, and the lower edge of the oil screen assembly 300 may have a rotating shaft 350 hinged to the smoke collecting hood 100. There is a front smoke inlet 340 on the front wall of the oil screen assembly 300. The oil screen assembly 300 includes a top wall connected to the upper part of the front wall, and a top smoke inlet 330 is provided on the top wall; in the front-rear direction, the oil screen assembly 300 can swing between a first swing state and a second swing state. In the first swing state, the top smoke inlet 330 is located inside the smoke collecting hood 100; in the second swing state, the top smoke inlet 330 is located outside the smoke collecting hood 100 and below the opened smoke baffle 200.

[0074] The front smoke inlet 340 on the front wall of the oil screen assembly 300 is always exposed outside. In the first swing state, the front wall of the oil screen assembly 300 can be parallel to the front surface of the smoke collecting hood 100. The included angle between the first swing state and the second swing state can be 20 - 50°, for example 30°. That is to say, the swing angle of the front wall relative to the front surface of the smoke collecting hood 100 can be 0 - 30°. The front wall swings forward and downward, and the top wall above the front wall is exposed.

[0075] It should be noted that both the top smoke inlet 330 and the front smoke inlet 340 can be a plurality of through holes arranged densely.

[0076] As Figure 2 As shown, when the range hood switches from the non-working state to the working state, the smoke baffle 200 flips upward to block the rising flue gas; the oil screen assembly 300 swings forward and downward. On the one hand, the front smoke inlet 340 on the front wall is closer to the cooker, can absorb the oil fume earlier, reduce the escape of oil fume, and improve the smoking effect; on the other hand, the top wall swung out from the assembly port is located below the smoke baffle 200, and the top smoke inlet 330 is close to the smoke baffle 200, which can absorb the oil fume blocked by the smoke baffle 200. Therefore, the problem of oil fume escaping from the gap between the smoke baffle 200 and the smoke collecting hood 100 during the operation of the range hood is improved.

[0077] In an implementable solution, the oil screen assembly 300 includes: a main oil screen 310; a side oil screen 320 slidably connected to the main oil screen 310 in the left-right direction; a side drive module for driving the side oil screen 320 to slide relative to the main oil screen 310; the side oil screen 320 has a first sliding state and a second sliding state. In the first sliding state, the main oil screen 310 and the side oil screen 320 are arranged side by side in the left-right direction; in the second sliding state, the main oil screen 310 and the side oil screen 320 are arranged along the front-rear direction.

[0078] As Figures 3 - 5As shown, the number of side oil screens 320 in the oil screen assembly 300 can be one or two. In this embodiment, there are two side oil screens 320, located on the left and right sides of the main oil screen 310. The two side oil screens move in the same manner, so only the left side oil screen 320 is used as an example to illustrate its structure and function. In the initial state, the side oil net 320 on the left can be located directly behind the main oil net 310. Due to the structure of the double-layer oil net, the oil smoke can be filtered through the two layers of oil nets to effectively improve the oil separation effect. At the same time, according to actual usage, the flipping of the oil net assembly 300 and the movement of the left and right side oil nets 320 in the oil net assembly 300 can be selectively controlled, so that the range hood can maintain the smoking effect while ensuring the oil separation effect of the range hood filter; when the oil net assembly 300 is switched from the first swinging state to the second swinging state, in order to increase the air inlet area, the left side oil net 320 can be slid to the left, so that the main oil net 310 and the side oil net 320 are arranged side by side in the left and right directions, expanding the air inlet area, while improving the smoking effect, and more effectively handling the oil smoke escaping to both sides.

[0079] Specifically, the main oil net 310 includes a first top wall 311 and a first front wall 312 connected to each other. The side oil net 320 includes a second top wall 321 and a second front wall 322 connected to each other. The first top wall 311 and the second top wall 321 each have a top smoke inlet 330, and the first front wall 312 and the second front wall 322 each have a front smoke inlet 340. The side oil net 320 also includes second side walls connected to the second top wall 321 and the second front wall 322, respectively. For the side oil net 320 on the left, the second side wall is connected to the left side of the second top wall 321 and the second front wall 322, while for the side oil net 320 on the right, the second side wall is located to the right of the second top wall 321 and the second front wall 322. The two second side walls located on the left and right sides of the oil net assembly 300 can prevent oil smoke from escaping within the fume hood 100 and guide the oil smoke toward the fan assembly at the rear.

[0080] In other feasible solutions, the side oil net 320 may be located in front of the main oil net 310 .

[0081] In one feasible solution, a first guide rail 410 extending in the left-right direction is provided on the main oil net 310; a first slide groove 420 slidingly connected to the first guide rail 410 and extending in the left-right direction is provided on the side oil net 320; a stop structure 411 is provided on the first guide rail 410, and the stop structure 411 is used to prevent the side oil net 320 from generating relative movement in the front-rear direction relative to the main oil net 310.

[0082] like Figures 4 - 6As shown, the first guide rail 410 plays a guiding role, guiding the side oil screen 320 to move only in the left-right direction. The cross-sectional shape of the overall structure formed by the first guide rail 410 and the stop structure 411 can be "T"-shaped or swallowtail-shaped, and the cross-sectional shape of the corresponding first chute 420 is also "T"-shaped or swallowtail-shaped, so as to prevent the side oil screen 320 from moving relative to the main oil screen 310 in the front-back direction.

[0083] Among them, the number of the first guide rails 410 and the first chutes 420 can be at least two, so as to increase the sliding stability.

[0084] As Figure 7 shown, a swing drive mechanism 500 can be connected between the first top wall 311 of the main oil screen 310 and the smoke collecting hood 100. The swing drive mechanism 500 can include a push rod motor 510 and a connecting rod 520. The push rod motor 510 drives the oil screen assembly 300 to swing back and forth through the connecting rod 520.

[0085] In an implementable solution, the side drive module includes: a drive part connected to the smoke collecting hood 100; a push rod 610 connected to the drive part and capable of telescoping in the left-right direction; a first connection structure is provided at the end of the push rod 610; a second connection structure connected to the first connection structure is provided on the side oil screen 320. The first connection structure and the second connection structure cooperate to enable the push rod 610 and the side oil screen 320 to generate relative movement in the front-back swing direction and be relatively fixed in the left-right direction.

[0086] As Figures 9 - 11 shown, the drive part can be a motor, and the motor can be fixedly connected inside the smoke collecting hood 100. The motor drives the push rod 610 to perform telescopic movement in the left-right direction, so as to switch the side oil screen 320 between the first sliding state and the second sliding state. The first connection structure and the second connection structure can slide relative to each other in the front-back direction and be relatively stationary in the left-right direction, so that the side oil screen 320 can swing in the front-back direction and also slide in the left-right direction.

[0087] [[ID=D19]]Specifically, the first connection structure includes: a second guide rail 620; a protrusion 621 is provided on the side of the second guide rail 620 facing away from the main oil screen 310; the first connection structure includes a connecting member 630 connecting the protrusion 621 and the push rod 610; a fixed side plate 640 is provided on the side of the main oil screen 310; the connecting member 630 and the second guide rail 620 are respectively located on opposite sides of the fixed side plate 640; a second chute 641 extending along the swing direction of the main oil screen 310 is provided on the fixed side plate 640; the protrusion 621 is located in the second chute 641 and is slidably connected to the second chute 641.

[0088] Both the second guide rail 620 and the second sliding groove 641 are arc-shaped, and the centers of the arcs are concentric with the swing axis of the oil screen assembly 300. The second guide rail 620 and the connecting member 630 are located on opposite sides of the fixed side plate 640. When the push rod 610 moves towards the main oil screen 310, the connecting member 630 will push the fixed side plate 640 towards the middle. Conversely, when the push rod 610 moves away from the main oil screen 310, the second guide rail 620 pulls the fixed side plate 640 towards both sides.

[0089] Furthermore, a third sliding groove 650 may be formed on the second side wall of the side oil screen 320. The third sliding groove 650 is parallel to the second sliding groove 641. The second guide rail 620 is located within the third sliding groove 650 and can slide back and forth within the second sliding groove 641 when the side oil screen 320 swings. The second sliding groove 641 further standardizes the swinging direction of the side oil screen 320.

[0090] The range hood further includes a telescopic plate 660 connected between the push rod 610 and the first connection structure; the telescopic plate 660 can block a part of the assembly opening when the side oil screen 320 is in the second sliding state. As Figure 11 shown, when the range hood is not working, the side oil screen 320 is located behind the main oil screen 310, and the telescopic plate 660 is located at the assembly opening and blocks a part of the assembly opening. On the one hand, it can make the range hood more beautiful. On the other hand, after a part of the assembly openings on both sides of the main oil screen 310 are blocked, at this time, after the range hood is started, the negative pressure at the first oil holes 710 of the main oil screen 310 is more concentrated and the suction force is greater. When the oil screen assembly 300 swings forward and downward to the second swing position, the side oil screens 320 on both sides can be unfolded. The push rod 610 sequentially drives the telescopic plate 660, the first connection structure, the second connection structure and the side oil screen 320 to move towards the outside (left or right) of the main oil screen 310. At this time, the telescopic plate 660 retracts to the inside of the smoke collecting hood 100, and the main oil screen 310 and the side oil screens 320 are exposed at the same time, thereby increasing the smoking area.

[0091] Furthermore, the range hood further includes a storage cavity 670 connected to the smoke collecting hood 100. The driving part is connected to the outer wall of the storage cavity 670. The side of the storage cavity 670 facing the main oil screen 310 has an opening. The telescopic plate 660 is slidably connected inside the storage cavity 670 and can slide in or out from the opening.

[0092] The storage cavity 670 is flat, and the height of the internal space of the cavity is approximately equal to the thickness of the telescopic plate 660. On the one hand, it can store the telescopic plate 660, and on the other hand, it can limit the sliding direction of the telescopic plate 660. The opening of the storage cavity 670 on the left side faces the right side.

[0093] Further, a third oil hole may be provided on the telescopic plate 660. When the oil net assembly 300 is in the first swinging state, the main oil net 310 and the telescopic plate 660 form a smoke inlet structure, improving the smoke inlet and oil filtering efficiency.

[0094] In an implementable solution, the front side of the main oil net 310 has a first oil hole 710; the front side of the side oil net 320 has a second oil hole 720. In the second sliding state, the centers of the first oil hole 710 and the second oil hole 720 are aligned, and the area of the second oil hole 720 is smaller than the area of the first oil hole 710.

[0095] As Figure 8 shown, when the oil net assembly 300 is in the first swinging state (the side oil net 320 does not move forward), the central positions of the first oil hole 710 and the second oil hole 720 on the main oil net 310 and the side oil net 320 correspond to each other. The size of the second oil hole 720 is slightly smaller than the size of the first oil hole 710. When the oil fume enters through the first oil hole 710, due to the smaller size of the second oil hole 720, that is, the gas flow rate is slightly smaller than that of the main oil net 310, the gas containing grease will collide and then enter the centrifugal fan inside the range hood through the opening of the side oil net 320. During the gas collision process, the grease separation degree can be improved. According to the different sizes and air volumes of the range hood, the ratio of the sizes of the first oil hole 710 and the second oil hole 720 and the width of the side oil net 320 (the number of openings of the side oil net 320 is determined by the width size of the inner oil net) can be adjusted according to the actual situation.

[0096] Embodiment 2

[0097] The difference from Embodiment 1 is that the oil net assembly 300 includes: a main oil net 310; and a side oil net 320 located on the left and / or right side of the main oil net 310; in the main oil net 310 and the side oil net 320, the lower part of one of them is hinged to the smoke collecting hood 100.

[0098] As Figure 12 shown, in an implementable solution, the lower part of the main oil net 310 is hinged to the smoke collecting hood 100, while the side oil net 320 is fixed relative to the smoke collecting hood 100. When the range hood is working, the main oil net 310 can be swung forward and downward, so that the main oil net 310 is closer to the cooking appliance, can absorb the oil fume earlier, reduce the oil fume escape, and improve the smoking efficiency. This type of range hood is particularly suitable for single-burner cooking appliances.

[0099] As Figures 13 - 15As shown, the main oil net 310 includes: a first front wall 312 having a first forward smoke inlet 314; the main oil net 310 includes: two side walls connected to the left and right sides of the first front wall 312 and having first side smoke inlets 313; the main oil net 310 has a first swinging state and a second swinging state. In the first swinging state, the first side smoke inlet 313 of the main oil net 310 is located inside the smoke collecting hood 100; in the second swinging state, the first side smoke inlet 313 of the main oil net 310 is located outside the smoke collecting hood 100.

[0100] After the main oil net 310 is opened, that is, after it changes from the first swinging state to the second swinging state, the first side smoke inlet 313 on the side wall of the main oil net 310 is exposed to assist in smoking, improving the overall smoking effect of the range hood.

[0101] As Figure 14 As shown, in an implementable solution, the side oil net 320 includes: a side cavity located inside the smoke collecting hood 100, and a second forward smoke inlet 323 communicating with the second front wall 322 of the side cavity. A second side smoke inlet 324 is provided on the side wall of the side cavity close to the main oil net 310; when the front wall of the main oil net 310 is parallel to the front wall of the side oil net 320, the first side smoke inlet 313 communicates with the second side smoke inlet 324.

[0102] The fan assembly of the range hood is located behind the main oil net 310. The first forward smoke inlet 314 and the second forward smoke inlet 323 are the main smoke inlets when the range hood is working. The inside of the side cavity is a closed cavity. The cooking fumes can enter the cavity of the side oil net 320 from the second forward air inlet, and then enter the range hood from the second side smoke inlet 324 through the first side smoke inlet 313 of the main oil net 310.

[0103] The side cavity may include a front plate and a rear plate with their lower edges connected and arranged at an angle, a top plate respectively connected to the upper edges of the front plate and the rear plate, a left plate respectively connected to the left edges of the front plate, the rear plate and the top plate, and a right plate respectively connected to the right edges of the front plate, the rear plate and the top plate. Specifically, the left plate and the right plate may be fan-shaped, and their lower edges are connected together. The top plate may be an arc-shaped plate. For the left side oil net 320, the second side smoke inlet 324 is located on its right plate. On the contrary, for the right side oil net 320, the second side smoke inlet 324 is located on its left plate.

[0104] The rear plate, the top plate of the side oil net 320, the left plate of the left side oil net 320, and the right plate of the right side oil net 320 are all solid plates without holes, so that the side cavity forms a diversion structure that enters from the second forward smoke inlet 323 and flows out from the second side smoke inlet 324.

[0105] Specifically, the central angle of the sector forming the side wall of the side oil screen 320 is smaller than the central angle of the sector forming the main oil screen 310, so that during the forward and backward swinging of the main oil screen 310, there will always be a part of the side wall of the main oil screen 310 overlapping with the side wall of the side oil screen 320, ensuring that the first side air inlet 313 and the second side air inlet 324 are connected. The swinging angle of the main oil screen 310 can be between 0-30°. In the first swinging state, the front wall of the side oil screen 320 is parallel to the front wall of the main oil screen 310, and a part of the first side air inlet 313 is connected to the second side air inlet 324; in the second swinging state, the rear wall of the side oil screen 320 is parallel to the rear wall of the main oil screen 310, and a part of the first side air inlet 313 is connected to the second side air inlet 324.

[0106] As Figures 14 - 16 shown, in an implementable solution, on the side wall of the side oil screen 320 having the second side air inlet 324, there is a border 325 surrounding the second side air inlet 324 and protruding towards the main oil screen 310; the side wall of the side oil screen 320 having the second side air inlet 324, the border 325, and the side wall of the main oil screen 310 facing the side oil screen 320 enclose a diversion cavity 326; in the second swinging state, a part of the first side air inlet 313 is located outside the smoke collecting hood 100, and a part of the first side air inlet 313 is located in the diversion cavity 326, and the total area of the part of the first side air inlet 313 located in the diversion cavity 326 is different from the total area of the second side air inlet 324, so as to change the flow rate of the oil fume, and further improve the oil separation ability. Specifically, as Figures 15 - 20 shown, after the main oil screen 310 rotates and opens (in the second swinging state), a part of the side wall of the main oil screen 310 rotates out of the smoke collecting hood 100, and a part does not rotate out. The side wall of the part that does not rotate out can still fit with the borders 325 of the side oil screens 320 on the left and right sides, which can ensure that after the second front air inlets 323 of the left and right side oil screens 320 inhale the oil fume, the oil fume enters the diversion cavity 326 through the second side air inlet 324 and enters the interior of the range hood from the first air inlets opened on the side wall of the main oil screen 310, preventing the oil fume entering the side oil screen 320 from escaping to other places; the part of the main oil screen 310 that rotates out of the surface of the smoke collecting hood 100 can directly assist in smoking; at the same time, when the oil fume passes through the diversion cavity 326 from the second side air inlet 324 of the side oil screen 320 and then passes through the first side air inlet 313 of the main oil screen 310, due to the total area of the part of the first side air inlet 313 located in the diversion cavity 326 being different from the total area of the second side air inlet 324 (in this embodiment, the total area of the part of the first side air inlet 313 located in the diversion cavity 326 is smaller than the total area of the second side air inlet 324), the flow rate of the oil fume is changed, and further the oil separation ability is improved.

[0107] As Figure 16As shown, when the main oil screen 310 is in the closed state (in the first swinging state), a part of the first side smoke inlet 313 of the main oil screen 310 is connected to the second side smoke inlet 324. This ensures that after the side oil screens 320 on both the left and right sides inhale cooking fumes, the cooking fumes first enter the interior of the side cavity. The diversion cavity 326 is always connected to the side cavity through the second side smoke inlet 324. The cooking fumes enter the diversion cavity 326 through the second side smoke inlet 324. The diversion cavity 326 is formed by the side wall of the side cavity, the border 325 on the side wall, and the side wall of the main oil screen 310. The side wall of the main oil screen 310 has the first side smoke inlet 313. The cooking fumes enter the interior of the range hood through the first side smoke inlet 313 opened on the side wall of the main oil screen 310, forming a cooking fume path to prevent the cooking fumes entering the side oil screen 320 from escaping elsewhere.

[0108] As Figure 21 shown, in another implementation, the main oil screen 310 is fixed relative to the smoke collecting hood 100, while the lower part of the side oil screen 320 is hinged to the smoke collecting hood 100. When the range hood is working, the side oil screen 320 can be swung forward and downward, so that the side oil screens 320 on both sides of the main oil screen 310 are closer to the cooking stove, improving the smoking efficiency. This type of range hood is particularly suitable for double-burner cooking stoves.

[0109] The lower part of the side oil screen 320 is hinged to the smoke collecting hood 100, and the side oil screen 320 can swing in the front-back direction. Specifically, the lower edge of the side oil screen 320 can be provided with an axial hole, and a rotating shaft 350 extending in the left-right direction can be provided on the smoke collecting hood 100. The rotating shaft 350 is located within the axial hole.

[0110] As Figure 22 shown, when the range hood is in the non-working state, the front wall of the side oil screen 320 and the front wall of the main oil screen 310 can both be parallel to the front surface of the smoke collecting hood 100. When the cooking fumes are relatively large, the side oil screen 320 beside the main oil screen 310 can be rotated and opened forward and downward. As Figure 21 shown, the side oil screen 320 can be closer to the cooking stove, and the cooking fumes can more easily enter the side oil screen 320, improving the smoking effect.

[0111] As Figure shown, when the demand for sucking cooking fumes is low, the side oil screen 320 is in the first swinging state, and the second side smoke inlet 324 of the side oil screen 320 is located inside the smoke collecting hood 100; when the demand for sucking cooking fumes is high, the side oil screen 320 is in the second swinging state, and the second side smoke inlet 324 of the side oil screen 320 is located outside the smoke collecting hood 100. The second side smoke inlet 324 can not only assist the first front smoke inlet 314 in sucking cooking fumes. At the same time, the side oil screen 320 and the main oil screen 310 can form a fume-gathering cavity. While achieving the fume-gathering effect, the second side smoke inlet 324 of the side oil screen 320 can expand the air intake area and air intake position, effectively improving the smoking effect.

[0112] As shown ​ in the figure, the side oil screen 320 can not only rotate relative to the smoke collecting hood 100, but also slide relative to the smoke collecting hood 100 in the left - right direction, so that the side oil screen 320 moves to the front of the main oil screen 310, and the two overlap in the front - back direction. After the oil fume passes through the side oil screen 320 and the main oil screen 310 successively, the filtering effect on the oil fume can be enhanced. For a single - burner stove, when in use, the side oil screen 320 and the main oil screen 310 are adjusted to overlap front - to - back, and there is a double - layer oil screen above the burner, which can cope with the cooking situation with large amounts of oil fume.

[0113] Embodiment 3

[0114] As shown ​ in the figure, the difference from Embodiment 1 is that the oil screen assembly 300 includes: a main oil screen 310; a side oil screen 320 slidably connected to the main oil screen 310 in the left - right direction; the side oil screen 320 includes: a framework 910 slidably connected to the main oil screen 310; a folding mesh body 920 connected to one side of the framework 910 and the side wall of the main oil screen 310 on the other side; a side drive module for driving the framework 910 to slide relative to the main oil screen 310; the side drive module drives the framework 910 to move towards or away from the main oil screen 310, so that the side oil screen 320 switches between a first sliding state and a second sliding state. In the first sliding state, the folding mesh body 920 is unfolded; in the second sliding state, the folding mesh body 920 is contracted.

[0115] Different from the specific solution of Embodiment 1, in this embodiment, during the left - right sliding of the side oil screen 320, the side oil screen 320 is in a state of being side - by - side with the main oil screen 310 or in a state behind the main oil screen 310. In this embodiment, a folding oil screen is adopted, and the oil screen is unfolded or contracted during the sliding of the framework 910, so that the space behind the main oil screen 310 is not occupied.

[0116] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A range hood, characterized in that: include: A smoke collecting hood (100) having an assembly opening on its front surface; The range hood further comprises a smoke baffle (200) connected to the smoke collecting hood (100) and located in front of the assembly opening; The range hood further comprises an oil screen assembly (300) assembled in the assembly opening; the oil screen assembly (300) comprises: a front wall whose lower portion is hinged to the fume collecting hood (100), and a front fume outlet (340) is provided on the front wall; The oil net assembly (300) includes a top wall connected to the upper part of the front wall, and a top smoke inlet (330) is provided on the top wall; in the front-to-back direction, the oil net assembly (300) can swing between a first swinging state and a second swinging state, and in the first swinging state, the top smoke inlet (330) is located on the inner side of the smoke hood (100); in the second swinging state, the top smoke inlet (330) is located on the outer side of the smoke hood (100) and below the opened smoke baffle (200).

2. The range hood according to claim 1, characterized in that: The oil screen assembly (300) comprises: a main oil screen (310); The oil net assembly (300) further includes a side oil net (320) slidably connected to the main oil net (310) in the left-right direction; The oil net assembly (300) further includes a side drive module for driving the side oil net (320) to slide relative to the main oil net (310); The side oil net (320) has a first sliding state and a second sliding state. In the first sliding state, the main oil net (310) and the side oil net (320) are arranged side by side in the left-right direction; in the second sliding state, the main oil net (310) and the side oil net (320) are arranged in the front-back direction.

3. The range hood according to claim 2, characterized in that: The main oil net (310) includes a first top wall (311), the side oil net (320) includes a second top wall (321), and both the first top wall (311) and the second top wall (321) are provided with the top smoke inlet (330).

4. The range hood according to claim 2, characterized in that: The main oil net (310) is provided with a first guide rail (410) extending in the left-right direction; the side oil net (320) is provided with a first chute (420) slidably connected to the first guide rail (410) and extending in the left-right direction; A stop structure (411) is provided on the first guide rail (410), and the stop structure (411) is used to prevent the side oil net (320) from moving relative to the main oil net (310) in the front-rear direction.

5. The range hood according to any one of claims 2 to 4, characterized in that: The side drive module comprises: a drive portion connected to the smoke collecting hood (100); The side drive module comprises a push rod (610) connected to the drive unit and capable of extending and retracting in the left-right direction; a first connection structure is provided at the end of the push rod (610); The side oil net (320) is provided with a second connection structure connected to the first connection structure. The first connection structure and the second connection structure cooperate to enable the push rod (610) and the side oil net (320) to generate relative movement in the front-back swing direction, while being relatively fixed in the left-right direction.

6. The range hood according to claim 5, characterized in that: The first connecting structure comprises: a second guide rail (620); a protrusion (621) is provided on a side of the second guide rail (620) facing away from the main oil screen (310); The first connection structure includes a connection piece (630) connecting the protrusion (621) and the push rod (610); A fixed side plate (640) is provided on the side of the main oil screen (310); the connecting member (630) and the second guide rail (620) are respectively located on opposite sides of the fixed side plate (640); A second chute (641) extending along the swinging direction of the main oil net (310) is provided on the fixed side plate (640); the protrusion (621) is located in the second chute (641) and is slidably connected to the second chute (641).

7. The range hood according to claim 5, characterized in that: It also includes a telescopic plate (660) connected between the push rod (610) and the first connecting structure; the telescopic plate (660) can cover part of the assembly opening when the side oil net (320) is in the second sliding state.

8. The range hood according to claim 7, characterized in that: The telescopic plate (660) also includes a storage cavity (670) connected to the smoke hood (100), the driving part is connected to the outer wall of the storage cavity (670), and the storage cavity (670) has an opening on the side facing the main oil net (310). The telescopic plate (660) is slidably connected to the inside of the storage cavity (670) and can slide in or out from the opening.

9. The range hood according to any one of claims 2 to 4, characterized in that: The front side of the main oil net (310) has a first oil hole (710); The front side of the side oil net (320) has a second oil hole (720). In the second sliding state, the centers of the first oil hole (710) and the second oil hole (720) are aligned, and the area of the second oil hole (720) is smaller than that of the first oil hole (710).

10. The range hood according to claim 1, characterized in that: The oil net assembly (300) comprises: a main oil net (310), and side oil nets (320) located on the left and / or right side of the main oil net (310); The lower portion of one of the main oil net (310) and the side oil net (320) is hinged to the fume hood (100).

11. The range hood according to claim 10, characterized in that: A side smoke inlet (810) is provided on the left side wall and / or right side wall of one of the main oil net (310) and the side oil net (320) that swings relative to the smoke collecting hood (100).

12. The range hood according to claim 1, characterized in that: The oil screen assembly (300) comprises: a main oil screen (310); The oil net assembly (300) includes: a side oil net (320) slidably connected to the main oil net (310) in the left-right direction; the side oil net (320) includes: a frame (910) slidably connected to the main oil net (310); The side oil net (320) comprises a folded net body (920) connected to the frame (910) on one side and connected to the side wall of the main oil net (310) on the other side; The oil screen assembly (300) includes a side drive module for driving the frame (910) to slide relative to the main oil screen (310); The side drive module drives the skeleton (910) to move toward or away from the main oil net (310) so that the side oil net (320) switches between a first sliding state and a second sliding state. In the first sliding state, the folding net body (920) is unfolded; in the second sliding state, the folding net body (920) is contracted.

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