A range hood

Abstract

The present invention discloses a range hood comprising: a fume hood having an air inlet; and a rectifying mechanism comprising a rectifying plate disposed within the fume hood, the rectifying plate comprising a mounting portion and a flow guide portion connected to each other. The mounting portion is disposed outside the air inlet and fixedly or rotatably connected to the fume hood, and the front end of the flow guide portion can extend above the rear end of the air inlet. By disposing the rectifying plate within the fume hood, which can extend above the rear end of the air inlet, the range hood of the present invention eliminates turbulent and swirling airflow at the rear end of the oil screen assembly, thereby reducing airflow noise.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to a range hood. Background Art

[0002] When the range hood has a rear air intake structure, the oil smoke moves to the rear of the smoke hood, and a large amount of oil smoke passes through the rear end of the oil net. There is no guide structure at the rear end of the smoke hood, the airflow is turbulent, the flow is not smooth, and vortices are easily generated near the rear end of the oil net, causing the airflow noise to increase. Summary of the Invention

[0003] The present invention aims to solve, at least to a certain extent, one of the problems existing in the existing related technologies. To this end, the present invention proposes a range hood, which eliminates turbulent and eddy airflow at the rear end of the oil screen assembly and reduces airflow noise by arranging a rectifier plate that can extend above the rear end of the air inlet in the smoke collection hood.

[0004] According to the range hood provided above, it is implemented through the following technical solutions:

[0005] A range hood comprises: a smoke hood provided with an air inlet; and a rectifying mechanism comprising a rectifying plate arranged in the smoke hood, the rectifying plate comprising a mounting portion and a guide portion connected to each other, the mounting portion being arranged outside the air inlet and fixedly connected or rotatably connected to the smoke hood, and the front end of the guide portion being extendable to above the rear end of the air inlet.

[0006] In some embodiments, the shape of the guide portion is composed of multiple curves, and the guide portion has an arc-shaped guide groove for opening toward the air inlet.

[0007] In some embodiments, the mounting portion and the guide portion are connected to form Font.

[0008] In some embodiments, the rectification mechanism further includes a connecting shaft, which is disposed in the smoke hood and outside the rear side of the air inlet. The connecting shaft is fixedly connected or rotatably connected to the smoke hood, and the guide portion is fixedly connected or rotatably connected to the connecting shaft through the mounting portion.

[0009] In some embodiments, the rectification mechanism further includes a locking member, the mounting portion is sleeved outside the middle portion of the connecting shaft in the length direction, and the mounting portion is locked with the connecting shaft through the locking member.

[0010] In some embodiments, the rectification mechanism also includes two support assemblies, which are respectively arranged on the left and right sides of the smoke hood. Each support assembly is located outside the rear side of the air inlet and is fixedly connected to the smoke hood. The opposite ends of the connecting shaft are respectively rotatably connected to the two support assemblies.

[0011] In some embodiments, a driving mechanism is further included. The driving mechanism is disposed in the smoke collecting hood, and an output end thereof is transmission-connected to the rectifier mechanism for driving the rectifier plate to rotate.

[0012] In some embodiments, the driving mechanism includes a driver and a connecting rod assembly. The driver is disposed in the smoke hood and connected to the top of the smoke hood. The output end of the driver is connected to the rectifier mechanism through the connecting rod assembly.

[0013] In some embodiments, it also includes a flap mechanism and two transmission mechanisms, the flap mechanism is rotatably connected to the smoke hood and is used to open or close the air inlet, the smoke hood is provided with two openings located on the left and right outsides of the air inlet, the two transmission mechanisms are movably provided in the two openings respectively, the rectifier mechanism and the flap mechanism are linked through the two transmission mechanisms, and the output end of the drive mechanism is connected to one of the transmission mechanisms.

[0014] In some embodiments, the transmission mechanism includes a first connector, an intermediate connector, and a second connector connected in sequence, the end of the first connector away from the intermediate connector is connected to the rectifier mechanism, and the end of the second connector away from the intermediate connector is connected to the flip mechanism; the output end of the driving mechanism is connected to one of the first connectors.

[0015] In some embodiments, the flap mechanism includes a flap assembly and two swing arm assemblies. The flap assembly can be rotatably disposed outside the smoke hood and is used to open or close the air inlet. The two swing arm assemblies can be movably passed through the two openings respectively, and the opposite ends of each swing arm assembly are respectively connected to the back of the flap assembly and the top of the smoke hood.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] 1. The range hood of the present invention has a rectifying plate disposed within the fume hood and extending above the rear end of the air inlet. Airflow at the rear edge of the air inlet moves upward along the rectifying plate, making the airflow at the rear end of the air inlet smoother. This improves airflow at the rear edge of the oil screen assembly, eliminates turbulence and eddy currents at the rear end of the oil screen assembly, and reduces airflow noise.

[0018] 2. By arranging the flap mechanism outside the smoke hood and using it to open or close the air inlet, and rotatably arranging the rectifier mechanism inside the smoke hood and linking the flap mechanism, so that the switch of the flap mechanism can drive the rectifier plate of the rectifier mechanism to move between extending to the upper rear end of the air inlet and retracting to the outside of the rear side of the air inlet, the rectifier plate is used to reduce the airflow noise at the rear end of the oil screen assembly and the air inlet, and at the same time, it can prevent oil stains on the rectifier plate from dripping through the air inlet when the flap mechanism is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the range hood in Example 1 of the present invention;

[0020] Figure 2 This is a schematic structural diagram from a first angle of the range hood in Example 1 of the present invention with part of the fume hood hidden;

[0021] Figure 3 This is a schematic structural diagram from a second angle of the range hood in Example 1 of the present invention with part of the fume hood hidden;

[0022] Figure 4 Schematic diagram of the structure of the rectifying mechanism, driving mechanism, flap mechanism and transmission mechanism in Example 1 of the present invention;

[0023] Figure 5 This is a schematic structural diagram of the range hood in Example 2 of the present invention with part of the fume hood hidden;

[0024] Figure 6 This is a schematic structural diagram of the range hood in Example 3 of the present invention with part of the fume hood hidden.

[0025] In the figure: 1-smoke hood, 11-auxiliary smoking port, 12-opening; 2-oil net assembly; 3-rectifier mechanism, 31-rectifier plate, 311-mounting part, 312-guide part, 3121-arc guide groove, 32-connecting shaft, 33-locking piece, 34-upper bracket, 35-lower base; 4-driving mechanism, 41-driver, 42-connecting rod assembly, 421-active rod, 422-driven rod, 423-connecting rod, 4231-flanging, 43-fixed seat; 5-flip mechanism, 51-flip assembly, 52-swing arm assembly; 6-transmission mechanism, 61-first connecting member, 62-intermediate connecting member, 63-second connecting member, 64-auxiliary connecting rod, 65-connecting bracket. DETAILED DESCRIPTION

[0026] The following examples illustrate the present invention, but the present invention is not limited to these examples. Modifications to the specific embodiments of the present invention or equivalent replacements of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed in the present invention.

[0027] Example 1

[0028] refer to Figure 1-2 This embodiment provides a range hood comprising a fume hood 1, an oil screen assembly 2, and a rectifying mechanism 3. The fume hood 1 is provided with an air inlet (not shown), at which the oil screen assembly 2 is detachably connected to the fume hood 1. The fume hood 1 is also provided with two auxiliary smoke inlets 11 located to the left and right of the air inlet. The air inlet and the two auxiliary smoke inlets 11 cooperate to increase the unit air intake area and reduce the escape of oil smoke to the left and right sides of the air inlet.

[0029] The rectifying mechanism 3 includes a rectifying plate 31 arranged in the smoke hood 1. The rectifying plate 31 includes a mounting portion 311 and a guide portion 312 connected to each other. The mounting portion 311 is arranged outside the air inlet and is fixedly connected or rotatably connected to the smoke hood 1. The front end of the guide portion 312 can extend to above the rear end of the air inlet.

[0030] When the rectifying plate 31 is fixedly connected to the smoke hood 1, the rectifying plate 31 cannot rotate relative to the air inlet of the smoke hood 1. At this time, the mounting portion 311 can be arranged outside the rear side of the air inlet and fixedly connected to the rear side wall or bottom of the smoke hood 1, or the mounting portion 311 can be arranged outside the left / right side of the air inlet and fixedly connected to the left / right side wall of the smoke hood 1, and the guide portion 312 is fixedly connected to the mounting portion 311, and the front end of the guide portion 312 can extend to above the rear end of the air inlet. When the rectifier plate 31 is rotated and connected to the smoke hood 1, the rectifier plate 31 can rotate relative to the air inlet of the smoke hood 1, the rear end of the guide part 312 is fixedly connected to the mounting part 311, and the front end of the guide part 312 can move between extending above the rear end of the air inlet and retracting to the outside of the rear side of the air inlet. After the guide part 312 is retracted to the outside of the rear side of the air inlet, the oil stains on the rectifier plate 31 can flow downward along it and gather in the area inside the smoke hood 1 located at the rear outside of the air inlet, thereby preventing the oil stains on the rectifier plate 31 from dripping through the air inlet.

[0031] refer to Figure 2-4 The shape of the guide portion 312 is composed of multiple curves, and the guide portion 312 has an arc-shaped guide groove 3121 for opening toward the air inlet. The arc-shaped guide groove 3121 is used to guide the airflow at the rear end of the air inlet and the rear end of the oil net assembly 2 to move upward, so as to make the airflow at the rear end of the air inlet and the rear end of the oil net assembly 2 smoother, improve the airflow at the rear end of the air inlet and the rear edge of the oil net assembly 2, eliminate turbulence and vortex airflow at the rear end of the oil net assembly 2, and reduce airflow noise. In this embodiment, the mounting portion 311 is hollow cylindrical, and the mounting portion 311 and the guide portion 312 are connected to form shaped, so that the rectifier plate 31 appears shape.

[0032] The rectifier mechanism 3 further includes a connecting shaft 32, which is disposed inside the smoke hood 1 and located at the rear side of the air inlet. The connecting shaft 32 is fixedly connected or rotatably connected to the smoke hood 1, and the air guide portion 312 is fixedly connected or rotatably connected to the connecting shaft 32 via the mounting portion 311, so as to reliably mount the rectifier plate 31 inside the smoke hood 1 via the connecting shaft 32. In this embodiment, the connecting shaft 32 is rotatably connected to the smoke hood 1, and the air guide portion 312 is fixedly connected to the connecting shaft 32 via the mounting portion 311 as an example. The rectifier mechanism 3 further includes a locking member 33, which is preferably a pin. The mounting portion 311 is sleeved outside the middle portion of the connecting shaft 32 in the longitudinal direction, and the mounting portion 311 is locked with the connecting shaft 32 via the locking member 33, so as to lock the rectifier plate 31 on the connecting shaft 32 via the locking member 33, ensuring that the connecting shaft 32 can synchronously drive the rectifier plate 31 to rotate while rotating.

[0033] The rectifying mechanism 3 also includes two support assemblies (not shown in the figure), which are respectively arranged on the left and right sides of the interior of the smoke hood 1. Each support assembly is located outside the rear side of the air inlet and is fixedly connected to the bottom of the smoke hood 1. The opposite ends of the connecting shaft 32 are rotatably connected to the two support assemblies. In this embodiment, the support assembly includes an upper bracket 34 arranged in the smoke hood 1, and the upper bracket 34 is L-shaped. The horizontal plate of the upper bracket 34 is fixedly installed on the bottom of the smoke hood 1 by bonding, welding or screws, and the vertical plate of the upper bracket 34 is rotatably connected to the connecting shaft 32. The support assembly may also include a lower base 35, and the lower base 35 is in the shape of an "Ω" opening facing downward. The horizontal plate of the upper bracket 34 is fixedly installed on the bottom of the smoke hood 1 through the lower base.

[0034] refer to Figure 3-4 The range hood further includes a drive mechanism 4, which is disposed within the fume hood 1 and connected to the top of the fume hood 1. The output end of the drive mechanism 4 is transmission-connected to a connecting shaft 32 of the rectifier mechanism 3. Alternatively, the output end of the drive mechanism 4 can be transmission-connected to a rectifier plate 31 of the rectifier mechanism 3. Driven by the drive mechanism 4, the rectifier plate 31 rotates so that it can move between extending above the rear end of the air inlet and retracting outside the rear end of the air inlet.

[0035] The driving mechanism 4 includes a driver 41 and a connecting rod assembly 42. The driver 41 is arranged in the smoke hood 1 and connected to the top of the smoke hood 1. In this embodiment, the driver 41 is connected and fixed to the top of the smoke hood 1 through a fixing seat 43. The output end of the driver 41 is connected to the connecting shaft 32 of the rectifier mechanism 3 through the connecting rod assembly 42. The driver 41 can drive the rectifier plate 31 to rotate through the connecting shaft 32.

[0036] The connecting rod assembly 42 of this embodiment includes an active rod 421, a driven rod 422, and a connecting rod 423. One end of the active rod 421 is connected to the output end of the driver 41, and the other end is connected to the connecting shaft 32 through the driven rod 422 and the connecting rod 423. In other embodiments, the connecting rod 423 can be omitted.

[0037] refer to Figure 2-4 In this embodiment, the range hood further includes a flap mechanism 5 and two transmission mechanisms 6. The smoke hood 1 is provided with two openings 12 located on the left and right outer sides of the air inlet. The two transmission mechanisms 6 are movably provided in the two openings 12. The flap mechanism 5 is rotatably connected to the smoke hood 1 and is used to open or close the air inlet. The flap mechanism 5 is linked to the rectifier mechanism 3 through the two transmission mechanisms 6. The output end of the drive mechanism 4 is connected to one of the transmission mechanisms 6. Thus, the switching of the flap mechanism 5 and the movement of the rectifier mechanism 3 can be synchronously controlled through the same drive mechanism 4, thereby reducing costs and ensuring that the switching of the flap mechanism 5 can drive the rectifier plate 31 of the rectifier mechanism 3 to move between extending to the upper rear end of the air inlet and retracting to the outside rear side of the air inlet, so as to reduce the airflow noise at the rear end of the oil screen assembly 2 and the air inlet through the rectifier plate 31. At the same time, it can prevent the oil stains on the rectifier plate 31 from dripping through the air inlet when the flap mechanism 5 is closed.

[0038] refer to Figure 2-3 The flap mechanism 5 includes a flap assembly 51 and two swing arm assemblies 52. The flap assembly 51 is arranged outside the smoke hood 1 and is used to open or close the air inlet. The two swing arm assemblies 52 are respectively movably provided in the two openings 12 on the smoke hood 1. The opposite ends of each swing arm assembly 52 are respectively connected to the back side of the flap assembly 51 and the top of the smoke hood 1, so that the flap assembly 51 can be stably and reliably rotated and connected to the smoke hood 1 through the two swing arm assemblies 52.

[0039] refer to Figure 4 The transmission mechanism 6 includes a first connecting member 61, an intermediate connecting member 62, and a second connecting member 63, which are connected in sequence. The end of the first connecting member 61 away from the intermediate connecting member 62 is connected to the rectifying mechanism 3. In this embodiment, the rear end of the first connecting member 61 can be arranged between the connecting shaft 32 and the vertical plate of the upper bracket 34 and connected to the connecting shaft 32. Of course, the rear end of the first connecting member 61 can also be arranged on the side of the vertical plate of the upper bracket 34 away from the connecting shaft 31 and connected to the connecting shaft 32 to ensure that the first connecting member 61 can reliably drive the connecting shaft 31 to rotate. The second connecting member 63 is movably inserted into the corresponding opening 12, and the end of the second connecting member 63 away from the intermediate connecting member 62 is connected to the back of the flip assembly 51 of the flip mechanism 5.

[0040] The output end of the driving mechanism 4 is connected to one of the first connecting parts 61. In this embodiment, the output end of the driver 41 is connected to one of the first connecting parts 61 through the connecting rod assembly 42, so that the driver 41 can drive one of the first connecting parts 61 through the connecting rod assembly 42. The movement of the first connecting part 61 can, on the one hand, drive the rectifier plate 31 to rotate through the connecting shaft 32, and on the other hand, drive the opening and closing movement of the flap mechanism 5 through the intermediate connecting part 62 and the second connecting part 63 in sequence.

[0041] The connecting rod 423 has flanges 4231 on its upper and lower sides at the end away from the driven rod 422. The two flanges 4231 clamp the first connecting member 61 arranged adjacent to the connecting rod 423. To prevent the upper flange 4231 from being positioned, a notch (not shown) is provided on the upper side of the first connecting member 61 at the position corresponding to the flange 4231. The flange 4231 on the upper side of the connecting rod 423 fits within the notch.

[0042] refer to Figure 4 When the rear end of the first connecting member 61 is disposed outside the vertical plate of the upper bracket 34 on a side away from the connecting shaft 31, the transmission mechanism 6 may further include an auxiliary connecting rod 64 and a connecting bracket 65. The rear end of the auxiliary connecting rod 64 is disposed between the vertical plate of the upper bracket 34 and the connecting shaft 31, and the front end of the auxiliary connecting rod 64 is connected to the middle or front end of the length direction of the first connecting member 61 via the connecting bracket 65. Optionally, the connecting bracket 65 may be connected to the first connecting member 61 by welding, hinges, or screws; of course, a bent edge (not shown) extending toward the front end of the auxiliary connecting rod 64 may also be integrally formed on the upper side of the first connecting member 61, with the bent edge constituting the connecting bracket 65.

[0043] Example 2

[0044] refer to Figure 5 This embodiment differs from Embodiment 1 in that the rectifier mechanism 3 is not linked to the flap mechanism. In this case, the flap mechanism can be omitted or not. The drive mechanism 4 includes a driver 41 and a connecting rod assembly 42. The driver 41 is disposed within the smoke hood 1 and connected to the top of the smoke hood 1. The connecting rod assembly 42 includes an active rod 421, a driven rod 422, and a connecting rod 423. One end of the active rod 421 is connected to the output end of the driver 41, and the other end is connected to the connecting shaft 32 via the driven rod 422 and the connecting rod 423.

[0045] The connecting rod assembly 42 also includes a first connecting member 61, through which the connecting rod 423 is drivingly connected to the connecting shaft 32. In this embodiment, the connecting rod 423 has flanges 4231 on the upper and lower sides of the end away from the driven rod 422. The two flanges 4231 clamp close to the first connecting member 61. To limit the upper flange 4231, a notch (not shown) is recessed on the upper side of the first connecting member 61 at a position corresponding to the flange 4231. The flange 4231 on the upper side of the connecting rod 423 is placed within the notch.

[0046] It can be seen that the driving mechanism 4 of this embodiment is only connected to the rectifying mechanism 3 in a transmission manner, and the rotation of the rectifying plate 31 in the rectifying mechanism 3 is independently controlled by the driving mechanism 4 .

[0047] Example 3

[0048] refer to Figure 6 This embodiment differs from Embodiment 2 in that the structure of the connecting rod assembly 42 is different. In this embodiment, the connecting rod assembly 42 includes an active rod 421 and a first connecting member 61. One end of the active rod 421 is connected to the output end of the driver 41, and the other end is connected to the connecting shaft 32 via the first connecting member 61. This simplifies the overall structure of the connecting rod assembly 42, improves the efficiency of disassembling the connecting rod assembly 42, and reduces the overall cost of the connecting rod assembly 42.

[0049] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A range hood, characterized in that: include: A smoke collecting hood (1), wherein the smoke collecting hood (1) is provided with an air inlet; A rectifying mechanism (3) includes a rectifying plate (31) arranged in the smoke collecting hood (1), the rectifying plate (31) includes a mounting portion (311) and a guide portion (312) connected to each other, the mounting portion (311) is arranged outside the air inlet and fixedly connected or rotatably connected to the smoke collecting hood (1), the front end of the guide portion (312) can extend to above the rear end of the air inlet, the shape of the guide portion (312) is composed of multiple curves, and the guide portion (312) has an arc-shaped guide groove (3121) for opening toward the air inlet, and also includes a driving mechanism (4), the driving mechanism (4) is arranged in the smoke collecting hood (1) , and its output end is connected to the rectifier mechanism (3) for driving the rectifier plate (31) to rotate, and also includes a flap mechanism (5) and two transmission mechanisms (6), the flap mechanism (5) is rotatably connected to the smoke hood (1) and is used to open or close the air inlet, the smoke hood (1) is provided with two openings (12) located on the left and right outer sides of the air inlet, the two transmission mechanisms (6) are movably arranged in the two openings (12), the rectifier mechanism (3) and the flap mechanism (5) are linked through the two transmission mechanisms (6), and the output end of the drive mechanism (4) is connected to one of the transmission mechanisms (6).

2. The range hood according to claim 1, characterized in that: The mounting portion (311) and the flow guide portion (312) are connected to form a "?" shape.

3. A range hood according to claim 1 or 2, characterized in that: The rectifying mechanism (3) further comprises a connecting shaft (32), the connecting shaft (32) being arranged in the smoke collecting hood (1) and located outside the rear side of the air inlet, the connecting shaft (32) being fixedly connected or rotatably connected to the smoke collecting hood (1), and the air guide portion (312) being fixedly connected or rotatably connected to the connecting shaft (32) via the mounting portion (311).

4. The range hood according to claim 3, characterized in that: The rectifying mechanism (3) further comprises a locking member (33); the mounting portion (311) is sleeved outside the middle portion of the connecting shaft (32) in the longitudinal direction; the mounting portion (311) is locked with the connecting shaft (32) via the locking member (33).

5. The range hood according to claim 3, characterized in that: The rectifying mechanism (3) further comprises two support assemblies, the two support assemblies being respectively arranged on the left and right sides of the interior of the smoke collecting hood (1), each support assembly being located outside the rear side of the air inlet and fixedly connected to the smoke collecting hood (1), and the opposite ends of the connecting shaft (32) being rotatably connected to the two support assemblies.

6. The range hood according to claim 1, characterized in that: The driving mechanism (4) comprises a driver (41) and a connecting rod assembly (42); the driver (41) is arranged in the smoke hood (1) and connected to the top of the smoke hood (1); the output end of the driver (41) is connected to the rectifier mechanism (3) through the connecting rod assembly (42).

7. The range hood according to claim 1, characterized in that: The transmission mechanism (6) comprises a first connecting member (61), an intermediate connecting member (62), and a second connecting member (63) connected in sequence, wherein the end of the first connecting member (61) away from the intermediate connecting member (62) is connected to the rectifying mechanism (3), and the end of the second connecting member (63) away from the intermediate connecting member (62) is connected to the flap mechanism (5); and the output end of the driving mechanism (4) is connected to one of the first connecting members (61).

8. The range hood according to claim 1, characterized in that: The flap mechanism (5) comprises a flap assembly (51) and two swing arm assemblies (52); the flap assembly (51) is rotatably arranged outside the smoke hood (1) and is used to open or close the air inlet; the two swing arm assemblies (52) are movably inserted into the two openings (12), respectively; and the opposite ends of each swing arm assembly (52) are respectively connected to the back of the flap assembly (51) and the top of the smoke hood (1).

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