Smoke baffle structure, sealing mechanism and range hood

Abstract

The application provides a smoke baffle structure, a blocking mechanism and a range hood, and relates to the technical field of kitchen appliances. The smoke baffle structure comprises a baffle and a connecting plate. The connecting plate is provided with a first connecting part and a second connecting part. The first connecting part is connected with the baffle, and the second connecting part is connected with a driving mechanism. A ventilation hole is arranged between the first connecting part and the second connecting part. The ventilation hole penetrates the connecting plate in an outward-to-inward direction along a smoke inlet. When the range hood is working, the baffle is opened, and oil fume enters the inside of the smoke collecting cover from the gap between the smoke inlet of the smoke collecting cover and the baffle. Part of the oil fume moves upward and contacts the connecting plate. This part of the oil fume can pass through the ventilation hole on the connecting plate, and then continuously moves upward and enters the fan. The connecting plate with the ventilation hole reduces the resistance of the oil fume. When the oil fume passes through the ventilation hole, the ventilation hole cuts the oil fume, which is beneficial to oil separation and improves the service life of the fan.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a smoke baffle structure, a sealing mechanism, and a range hood. Background Technology

[0002] The range hood includes a smoke collection hood, a smoke inlet on the bottom plate of the smoke collection hood, and a sealing mechanism inside the smoke collection hood, which includes a movable baffle.

[0003] In the existing technology, the connecting plate on the baffle used to connect with the drive mechanism will obstruct the airflow to a certain extent, thereby increasing the wind resistance and making it difficult to absorb and exhaust oil fumes. At the same time, oil fumes containing too much grease will directly enter the fan, which will affect the service life of the fan. Summary of the Invention

[0004] The purpose of this invention is to provide a smoke baffle structure, a sealing mechanism, and a range hood to alleviate the technical problems of reduced smoke extraction efficiency caused by excessive wind resistance in existing range hoods, and the high grease content of the fumes entering the fan.

[0005] In a first aspect, an embodiment of the present invention provides a smoke baffle structure, comprising: a baffle and a connecting plate, wherein the connecting plate has a first connecting portion and a second connecting portion, the first connecting portion being connected to the baffle, and the second connecting portion being connected to the driving mechanism;

[0006] A ventilation hole is provided in the area between the first connecting part and the second connecting part, and the ventilation hole extends through the connecting plate from the outside to the inside along the smoke inlet of the smoke hood.

[0007] Furthermore, the connecting plate includes a first plate portion, a second plate portion, and a third plate portion connected sequentially from bottom to top, with the first connecting portion located on the first plate portion and the second connecting portion located on the third plate portion.

[0008] Furthermore, the ventilation hole is an elongated hole, and the elongated hole extends from the second plate portion to the third plate portion.

[0009] Furthermore, the connecting plate is connected to the left or right side of the baffle. In the front-back direction, the length of the connecting plate is less than the length of the baffle, and the front and rear edges of the connecting plate are both located between the front and rear edges of the baffle.

[0010] Furthermore, one side edge of the second plate is connected to the first plate, and the opposite side edge extends to the outside of the baffle and is connected to the third plate. There is a vertical gap between the second plate and the baffle, which is used to avoid the upward folding edge at the edge of the smoke inlet.

[0011] And / or, the first plate portion is attached to the back of the baffle;

[0012] And / or, the third plate has mounting holes for connection with the drive mechanism;

[0013] And / or, the ventilation hole is an elongated hole, a round hole, or a square hole.

[0014] Secondly, an embodiment of the present invention provides a sealing mechanism, including a driving mechanism and the above-mentioned smoke baffle structure.

[0015] Furthermore, the sealing mechanism includes an assembly plate connected to the bottom opening of the smoke hood. The assembly plate is provided with through holes penetrating its upper and lower surfaces, forming the smoke inlet of the smoke hood. The driving mechanism can drive the baffle to block the smoke inlet or move it above the smoke inlet.

[0016] Furthermore, the assembly plate is provided with multiple auxiliary air inlets, which are arranged around the smoke inlet.

[0017] Furthermore, the driving mechanism is connected to the second connecting part and is used to drive the baffle to perform linear motion.

[0018] Furthermore, the drive mechanism includes a lead screw motor module or a gear and rack module.

[0019] Furthermore, the blocking mechanism includes a limiting structure, and the connecting plate is slidably connected to the limiting structure. The limiting structure is used to prevent the connecting plate from deviating from a preset path.

[0020] Furthermore, the sealing mechanism includes a fixing plate for connecting to the smoke collection hood, and the driving mechanism is connected to the fixing plate.

[0021] Furthermore, the fixing plate is connected to the middle position of the lower opening of the smoke hood, and can divide the lower opening of the smoke hood into two smoke inlets, left and right.

[0022] There are two drive mechanisms and two smoke baffle structures on the fixed plate, and they correspond one to one. The two smoke baffle structures are located on the left and right sides of the fixed plate, respectively. One smoke baffle structure is used to block the smoke inlet on the left side of the smoke collection hood, and the other smoke baffle structure is used to block the smoke inlet on the right side of the smoke collection hood.

[0023] Thirdly, an embodiment of the present invention provides a range hood, the range hood including a smoke collection hood and the aforementioned sealing mechanism.

[0024] The smoke baffle structure provided in this embodiment of the invention includes a baffle and a connecting plate. The connecting plate has a first connecting portion and a second connecting portion. The first connecting portion is connected to the baffle, and the second connecting portion is connected to the driving mechanism. A ventilation hole is provided in the area between the first connecting portion and the second connecting portion, and the ventilation hole penetrates the connecting plate from the outside to the inside along the smoke inlet of the smoke collection hood. When the range hood is working, the baffle opens, and the oil fumes enter the interior of the smoke collection hood from the gap between the smoke inlet of the smoke collection hood and the baffle. Some of the oil fumes move upward and contact the connecting plate. This part of the fumes can pass through the ventilation hole on the connecting plate and continue to move upward and enter the fan. The connecting plate with ventilation holes reduces the resistance to oil fumes. At the same time, when the oil fumes pass through the ventilation hole, the ventilation hole cuts the oil fumes, which is beneficial for grease separation and improves the service life of the fan. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the smoke baffle structure provided in an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of a sealing mechanism provided in an embodiment of the present invention (the diagram shows two sealing mechanisms);

[0028] Figure 3 for Figure 2 A magnified view of a portion of position A in the middle;

[0029] Figure 4 A schematic diagram of the driving mechanism of the sealing mechanism provided in an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of a range hood provided in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the internal structure of a range hood provided in an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the internal structure of another range hood provided in an embodiment of the present invention.

[0033] Icons: 100-Smoke hood; 110-Base plate; 111-Smoke inlet; 200-Baffle; 300-Connecting plate; 310-Ventilation hole; 320-First plate; 330-Second plate; 340-Third plate; 410-Motor; 420-Connecting structure; 421-Inner guide rail; 510-Slide groove; 610-Fixing plate; 611-Flanged edge; 620-Partition; 700-Auxiliary air inlet; 800-Assembly plate. Detailed Implementation

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0035] like Figure 1 As shown, the smoke baffle structure provided in this embodiment of the invention is installed inside the smoke collection hood 100. The smoke baffle structure includes a baffle 200 and a connecting plate 300. The connecting plate 300 has a first connecting part and a second connecting part. The first connecting part is connected to the baffle 200, and the second connecting part is connected to the driving mechanism. A ventilation hole 310 is provided in the area between the first connecting part and the second connecting part. The ventilation hole 310 penetrates the connecting plate 300 from the outside to the inside along the smoke inlet 111. When the range hood is working, the baffle 200 opens, and the fumes enter the interior of the fume hood 100 through the gap between the fume inlet 111 and the baffle 200. Some of the fumes move upward and come into contact with the connecting plate 300. This part of the fumes can pass through the ventilation holes 310 on the connecting plate 300 and continue to move upward and enter the fan. The connecting plate 300 with ventilation holes 310 reduces the resistance to fumes. At the same time, when the fumes pass through the ventilation holes, the ventilation holes cut the fumes, which is conducive to grease separation and improves the service life of the fan.

[0036] The connecting plate 300 includes a first plate portion 320, a second plate portion 330, and a third plate portion 340 connected sequentially from bottom to top. The first connecting portion is located on the first plate portion 320, and the second connecting portion is located on the third plate portion 340.

[0037] Specifically, the first plate 320 can be glued or welded to the back of the baffle 200, and the third plate 340 can be provided with mounting holes to connect the third plate 340 to the drive mechanism using threaded parts. The second plate 330 is used to connect the first plate 320 and the third plate 340, and the first plate 320, the second plate 330 and the third plate 340 are integrally formed.

[0038] The first plate portion 320 and the second plate portion 330 can be parallel to each other and are connected by a curved structure. There is a vertical gap between the second plate portion 330 and the first plate portion 320, which is used to avoid the flange 611 at the smoke inlet 111 of the smoke hood 100. In this embodiment, the flange 611 is located on the fixing plate 610, which is connected to the middle position of the bottom opening of the smoke hood 100, and can divide the bottom opening of the smoke hood 100 into two smoke inlets 111.

[0039] The third plate portion 340 is inclined upwards and can cooperate with the inclined drive mechanism. The third plate portion 340 is set at an angle to the second plate portion 330.

[0040] In this embodiment, the ventilation hole 310 is an elongated hole that extends from the second plate portion 330 to the third plate portion 340, thereby maximizing the coverage of the connecting plate 300 with the ventilation hole 310, thus reducing wind resistance.

[0041] The connecting plate 300 is connected to the left or right side of the baffle 200. In the front-back direction, the length of the connecting plate 300 is less than the length of the baffle 200, and the front and rear edges of the connecting plate 300 are both located between the front and rear edges of the baffle 200.

[0042] The connecting plate 300 is narrower than the baffle 200 because the smoke inlet 111 of the smoke hood 100 is located on the bottom plate 110 of the smoke hood 100. The smoke inlet 111 has a larger area. The smoke hood 100 has a structure that is wider at the bottom and narrower at the top. The width of the inner cavity of the smoke hood 100 decreases as it goes higher. The connecting plate 300 is located above the baffle 200. Therefore, the connecting plate 300 should be narrower than the baffle 200 to avoid interference with the inner wall of the smoke hood 100.

[0043] The number of ventilation holes 310 can be multiple and they can cover the entire surface of the plate. The ventilation holes 310 can be elongated, square, or round, and the shape of the holes is not limited.

[0044] like Figures 2-4 As shown, the sealing mechanism provided in this embodiment of the invention includes a driving mechanism and the smoke baffle structure described above.

[0045] The drive mechanism can be fixedly connected to the smoke hood 100. The drive mechanism opens or closes the corresponding smoke inlet 111 on the smoke hood 100 through the lifting baffle 200.

[0046] like Figure 7As shown, the sealing mechanism includes an assembly plate 800, which is connected to the bottom opening of the smoke collection hood 100. The assembly plate 800 is provided with a through hole penetrating its upper and lower surfaces, and the through hole forms the smoke inlet 111 of the smoke collection hood 100. The driving mechanism can drive the baffle 200 to block the smoke inlet 111 or move to above the smoke inlet 111.

[0047] The mounting plate 800 is connected to the bottom opening of the smoke hood 100. The mounting plate 800 is fixed relative to the smoke hood 100, and the lower surface of the mounting plate 800 can be flush with the bottom surface of the smoke hood 100, which is aesthetically pleasing and easy to wipe. The through hole on the mounting plate 800 forms the smoke inlet 111 of the smoke hood 100, and the baffle 200 is used to block or open the smoke inlet 111.

[0048] The assembly plate 800 may be provided with a plurality of auxiliary air inlets 700, which are arranged around the smoke inlet 111.

[0049] When both baffles 200 are blocked, some oil fumes can still enter the fume hood 100 through the auxiliary air inlet 700 after the fan is started. When the user is cooking soup or boiling water, which produces less oil fumes, neither baffle 200 needs to be opened, and the smoke can be directly introduced through the auxiliary air inlet 700. While meeting the requirements for suction and exhaust, the noise diffusion at the fan is blocked, and the noise transmitted to the outside is significantly reduced, making the cooking environment more comfortable.

[0050] The driving mechanism is connected to the second connecting part and is used to drive the baffle 200 to perform linear motion.

[0051] The drive mechanism drives the baffle 200 to rise and fall automatically, thereby opening and closing the smoke inlet 111. In this embodiment, the drive mechanism drives the baffle 200 to move in a straight line. In other embodiments, the drive mechanism can also drive the baffle 200 to perform nonlinear motion, as long as it can enable the baffle 200 to move closer to the smoke inlet 111 and further away from the smoke inlet 111.

[0052] The drive mechanism may include a lead screw motor module or a gear and rack module.

[0053] like Figure 3 As shown, in this embodiment, the driving mechanism includes a motor 410, which can be fixed on the smoke collection hood 100. A gear is connected to the output shaft of the motor 410, and a rack structure that meshes with the gear is provided on the connecting plate. The rotation of the gear drives the rack to move in a straight line.

[0054] The sealing mechanism includes a limiting structure, and the connecting plate 300 is slidably connected to the limiting structure. The limiting structure is used to prevent the connecting plate 300 from deviating from a preset path. The limiting structure is fixed relative to the smoke hood 100. The limiting structure may include two sliding grooves 510 with openings facing opposite directions and spaced apart. The two sliding grooves 510 may be spaced apart along the front-rear direction of the smoke hood 100. The two ends of the connecting plate are respectively provided with inner rails slidably connected within the sliding grooves 510. The inner rail 421 may be a groove-shaped structure, and the opening of the inner rail 421 faces the bottom of the sliding groove 510.

[0055] The connecting plate may include two separate connecting structures 420, which can be connected to the front and rear ends of the connecting plate 300 respectively. The connecting structures 420 and the connecting plate 300 can be connected by threaded connections. A rack and pinion structure can be provided on one of the two connecting structures 420. Both connecting structures 420 have internal tracks, which can be slidably connected to two oppositely arranged sliding grooves 510. The separate connecting plate 300 can be lighter, save materials, and avoid clogging the ventilation holes 310.

[0056] like Figure 4 As shown, the sealing mechanism includes a fixing plate 610, which is used to connect with the smoke collection hood 100, and the driving mechanism is connected to the fixing plate 610.

[0057] The fume hood 100 and the fixing plate 610 are two independent structural components. The fixing plate 610 and the fume hood 100 can be connected by threaded parts, and the drive mechanism is installed on the fixing plate 610. During installation, the drive mechanism can be installed on the fixing plate 610 first, and then the fixing plate 610 can be installed on the fume hood 100, which facilitates the assembly of the range hood.

[0058] The fixing plate 610 is connected to the middle position of the lower opening of the smoke hood 100 and can divide the lower opening of the smoke hood 100 into two smoke inlets 111, left and right. There are two driving mechanisms and two smoke baffle structures on the fixing plate 610, and they correspond one to one. The two smoke baffle structures are located on the left and right sides of the fixing plate 610, respectively. The driving mechanism on the left can be connected to the baffle 200 used to block the left smoke inlet 111. Correspondingly, the driving mechanism on the right side of the fixing plate 610 can be connected to the baffle 200 used to block the right smoke inlet 111.

[0059] Two partitions 620 can be installed on the fixed plate 610, spaced apart in the front-to-back direction. The drive mechanism for controlling the raising and lowering of the left baffle 200 can be connected to the rear partition 620, while the drive mechanism for controlling the raising and lowering of the right baffle 200 can be connected to the front partition 620. This avoids interference between them, making the internal structure of the smoke hood 100 more compact and freeing up more space.

[0060] The range hood provided in this embodiment of the invention includes a smoke collection hood 100 and the aforementioned sealing mechanism. Because the range hood provided in this embodiment of the invention utilizes the aforementioned sealing mechanism, it also possesses the advantages of the sealing mechanism.

[0061] like Figures 5-7 As shown, the fume hood 100 has two smoke inlets 111, and the fixed plate 610 located in the middle of the fume hood 100 has two smoke baffle assemblies. The two smoke inlets 111 correspond to the two burners on the stove. When the left burner is in use, the left baffle 200 moves away from the left smoke inlet 111, thereby opening the left smoke inlet 111. The opening distance can be between 30-50mm, forming an annular negative pressure zone with the inner cavity of the fume hood 100 to lock in the fumes. At the same time, the right baffle 200 does not open, or the opening angle is smaller than that of the left, reducing the air intake in the non-cooking area, thereby increasing the air intake velocity in the cooking area and improving the fume extraction effect on the cooking side. Conversely, when the right burner is in use, the right baffle 200 opens the right smoke inlet 111, achieving the same principle as the left.

[0062] It has three states. When the baffle 200 is in the first state, the baffle 200 is located above the smoke inlet, and the fumes can enter the smoke collection hood 100. When the baffle 200 is in the second state, the baffle 200 can completely close the smoke inlet 111, and the smoke inlet 111 is not working. When the baffle 200 is in the third state, the baffle 200 is located below the smoke inlet, which facilitates cleaning of the upper surface of the baffle 200.

[0063] 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. A shut-off mechanism, characterized in that The driving mechanism and the smoke baffle structure are included; The smoke baffle structure includes a baffle (200) and a connecting plate (300) having a first connecting part and a second connecting part, the first connecting part is connected with the baffle (200), and the second connecting part is connected with the driving mechanism; The area between the first connecting part and the second connecting part is provided with a ventilation hole (310) which penetrates the connecting plate (300) from the outside to the inside along the smoke inlet (111) of the smoke hood (100); The sealing mechanism includes an assembly plate (800) which is connected with the bottom opening of the smoke hood (100), the assembly plate (800) is provided with a through hole penetrating the upper and lower surfaces thereof, the through hole forms the smoke inlet (111) of the smoke hood (100), and the driving mechanism can drive the baffle (200) to seal the smoke inlet (111) or move above the smoke inlet (111), when the baffle (200) moves above the smoke inlet (111), the smoke inlet (111) is opened, the oil fume enters the inside of the smoke hood from the gap between the smoke inlet of the smoke hood and the baffle, part of the oil fume moves upward and contacts the connecting plate, the part of the oil fume passes through the ventilation hole on the connecting plate, and then continues to move upward and enters the fan.

2. The shut-off mechanism of claim 1, wherein, The connecting plate (300) includes a first plate part (320), a second plate part (330) and a third plate part (340) connected in sequence from bottom to top, the first connecting part is located on the first plate part (320), and the second connecting part is located on the third plate part (340).

3. The shut-off mechanism of claim 2, wherein, The ventilation hole (310) is a long strip hole, and the long strip hole extends from the second plate part (330) to the third plate part (340).

4. The occlusion mechanism of claim 1, wherein, The connecting plate (300) is connected on the left side or the right side of the baffle (200), in the front-rear direction, the length of the connecting plate (300) is less than the length of the baffle (200), and the front edge and the rear edge of the connecting plate (300) are located between the front edge and the rear edge of the baffle (200).

5. The shut-off mechanism of claim 2, wherein, One side edge of the second plate part (330) is connected with the first plate part (320), the opposite side edge extends to the outside of the baffle (200) and is connected with the third plate part (340), the second plate part (330) has a gap in the vertical direction with the baffle (200), and the gap is used for avoiding the upwardly folded flange (611) at the edge of the smoke inlet (111); And / or, the first plate part (320) is attached to the back of the baffle (200); And / or, the third plate part (340) has a mounting hole connected with the driving mechanism; And / or, the ventilation hole (310) is a long strip hole, a round hole or a square hole.

6. The occlusion mechanism of claim 1, wherein, The assembly plate (800) is provided with a plurality of auxiliary air inlets (700), and the plurality of auxiliary air inlets (700) are arranged around the smoke inlet (111).

7. The occlusion mechanism of claim 1, wherein, The driving mechanism is connected with the second connecting part and is used for driving the baffle (200) to move linearly.

8. The shut-off mechanism of claim 7, wherein, The driving mechanism comprises a screw motor module or a gear and rack module.

9. The occlusion mechanism of claim 7, wherein, The blocking mechanism comprises a limiting structure, the connecting plate (300) is in sliding connection with the limiting structure, and the limiting structure is used for preventing the connecting plate (300) from deviating from a preset path.

10. The containment mechanism of claim 1, wherein, The blocking mechanism comprises a fixed plate (610), the fixed plate (610) is used for being connected with the smoke collecting hood (100), and the driving mechanism is connected on the fixed plate (610).

11. The shut-off mechanism of claim 10, wherein, The fixed plate (610) is connected at a middle position of the lower end opening of the smoke collecting hood (100) and can divide the lower end opening of the smoke collecting hood (100) into left and right two smoke inlets (111). The driving mechanism and the smoke blocking plate structure on the fixed plate (610) are both two and one-to-one corresponding, and the two smoke blocking plate structures are respectively located on the left and right sides of the fixed plate (610), the baffle (200) of one of the smoke blocking plate structures is used for blocking the smoke inlet (111) on the left side of the smoke collecting hood (100), and the baffle (200) of the other smoke blocking plate structure is used for blocking the smoke inlet (111) on the right side of the smoke collecting hood (100).

12. A range hood characterized by The range hood comprises a smoke collecting hood (100) and the blocking mechanism according to any one of claims 1-11.

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