CN215863591U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, which comprises a box body, wherein an air inlet is formed in the front side of the box body, and a smoke baffle component capable of opening or closing the air inlet is arranged in the front side of the box body, and is characterized in that: keep off the cigarette board subassembly including the first cigarette board and the second cigarette board that arrange from top to bottom, first cigarette board keeps off the cigarette board and rotates with box and second cigarette board respectively and is connected, the axis of rotation of first cigarette board and second cigarette board that keeps off extends in the left and right sides direction. Compared with the prior art, the utility model has the advantages that: through setting up two fender cigarette boards of rotation connection of each other, can improve the oil smoke effectively and get into the motion trail behind the cigarette area of holding together, when having increased the cigarette area of holding together for the oil smoke gets into the curve of air intake more level and smooth, can effectively improve the oil absorption cigarette effect, and the range hood opens the whole distance grow between the back and the user, and the risk that shelters from the sight diminishes.

Description

Fume exhaust fan

Technical Field

The utility model relates to an oil fume purification device, in particular to a range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood works by utilizing the fluid dynamics principle and is provided with a centrifugal fan inside

And (3) sucking and exhausting oil smoke, and filtering partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

In order to improve the effect of oil smoke absorption, it is common practice to increase the area covered by the air inlet. The range hood disclosed in the chinese patent with the application number of 202020176183.3 comprises a housing provided with a main air inlet, an air suction device mounted on the housing, and an oil cup arranged at the bottom of the housing, wherein an auxiliary air inlet spaced from the main air inlet is further arranged on the housing, a panel capable of opening and closing the auxiliary air inlet is pivoted on the housing, and the auxiliary air inlet comprises a plurality of second meshes arranged in an array.

In order to enable the air inlet to cover a larger area, the panel on the whole front side is designed to be overturned to form the thin range hood which has a light and thin appearance. However, the range hood has the following problems: 1. in order to ensure that the panel does not shield the sight when the range hood works, the turning and opening angle of the panel needs to be controlled, but the turning control angle can cause the range hood to have a smaller smoke gathering area and a poorer smoke absorption effect; 2. in order to improve the oil fume absorption effect, when the turning angle of the panel is increased, the distance between the smoke baffle and a person is reduced, and the customer is oppressed while the sight line is shielded.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a range hood aiming at the defects in the prior art, which can ensure better oil smoke absorption effect and avoid blocking sight.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes the box, the front side of box is formed with the air intake, the box front side is provided with the cigarette board subassembly that keeps off that can open or close the air intake, its characterized in that: keep off the cigarette board subassembly including the first cigarette board and the second cigarette board that arrange from top to bottom, first cigarette board keeps off the cigarette board and rotates with box and second cigarette board respectively and is connected, the axis of rotation of first cigarette board and second cigarette board that keeps off extends in the left and right sides direction.

According to one embodiment of the utility model, the front side of the box body is in a three-section type, the box body comprises a front panel positioned on the front side, the front panel is positioned above the air inlet, and the first smoke baffle plate is rotatably connected with the front panel.

In order to drive the two smoke baffles to move conveniently, the range hood further comprises a moving mechanism for driving the smoke baffle assembly, the moving mechanism comprises a driving mechanism, a first connecting piece and a second connecting piece, the first connecting piece is rotatably connected with the front panel, the first connecting piece is further rotatably connected with the second connecting piece, the second connecting piece is further rotatably connected with the output end of the driving mechanism and can rotate back and forth, the first connecting piece is further fixedly connected with the first smoke baffle, and the second connecting piece is further fixedly connected with the second smoke baffle.

Preferably, in order to drive the second connecting piece to rotate, the driving mechanism is an electric push rod and is connected with the rear side wall of the box body.

According to another aspect of the utility model, the front side of the box body is in a two-section type, the upper end of the first smoke baffle is rotatably connected with the upper end of the front side of the box body, and the lower end of the first smoke baffle is rotatably connected with the upper end of the second smoke baffle.

In order to drive the two smoke baffles to move conveniently, the range hood further comprises a moving mechanism for driving the smoke baffle assembly, the moving mechanism comprises a driving mechanism, a third connecting piece and a fourth connecting piece, the third connecting piece is fixedly connected with the first smoke baffle, the fourth connecting piece is fixedly connected with the second smoke baffle, the third connecting piece can be rotatably connected with the box body, the third connecting piece is further rotatably connected with the fourth connecting piece, and the driving mechanism can drive the third connecting piece to rotate around the joint with the box body so as to drive the first smoke baffle and the second smoke baffle to move.

For increasing the smoke collecting cavity and improving the oil smoke suction effect, the moving mechanism further comprises a first connecting rod, one end of the first connecting rod can be rotatably connected with the box body, and the other end of the first connecting rod is rotatably connected with the second smoke baffle, so that the second smoke baffle is kept vertical in the moving process.

In order to facilitate the arrangement of the first connecting rod, a cigarette gathering plate is arranged at the air inlet, and the cigarette blocking plate component is arranged on the front side of the cigarette gathering plate; the motion mechanism further comprises a connecting seat, the connecting seat is fixedly arranged on the cigarette holding plate, and the first connecting rod is rotatably connected with the connecting seat and is connected with the box body.

In order to drive the third connecting piece conveniently, the driving mechanism is a motor, the movement mechanism further comprises a second connecting rod and a third connecting rod, one end of the second connecting rod is connected with the output end of the driving mechanism and driven to rotate by the driving mechanism, the other end of the second connecting rod is rotatably connected with one end of the third connecting rod, and the other end of the third connecting rod is rotatably connected with the part between the two ends of the third connecting piece.

In order to facilitate the third connecting piece to be rotatably connected with the box body, the driving mechanism is fixed with the box body through the mounting bracket, and the end part of the third connecting piece is rotatably connected with the mounting bracket to realize the connection with the box body.

In order to avoid the oil smoke from escaping from the left and right sides, the smoke baffle assembly further comprises a first baffle plate extending from front to back and respectively arranged at the left and right sides of the first smoke baffle plate, and a second baffle plate extending from front to back and respectively arranged at the left and right sides of the second smoke baffle plate.

In order to reduce the possibility that oil smoke escapes from the middle of the first smoke baffle and the second smoke baffle after rising when the range hood is opened, a decorative shaft is arranged between the lower end of the first smoke baffle and the upper end of the second smoke baffle.

Preferably, in order to enable the oil smoke to enter the air inlet to be smoother, a fan system is arranged in the box body, and the air inlet of the fan system faces forwards.

Compared with the prior art, the utility model has the advantages that: through setting up two fender cigarette boards of rotation connection of each other, can improve the oil smoke effectively and get into the motion trail behind the cigarette area of holding together, when having increased the cigarette area of holding together for the oil smoke gets into the curve of air intake more level and smooth, can effectively improve the oil absorption cigarette effect, and the range hood opens the whole distance grow between the back and the user, and the risk that shelters from the sight diminishes.

Drawings

Fig. 1 is a schematic view of a range hood according to a first embodiment of the present invention in a closed state;

fig. 2 is a sectional view of a range hood according to a first embodiment of the present invention in a closed state;

fig. 3 is a schematic view of a hidden smoke baffle assembly of the range hood according to the first embodiment of the present invention;

fig. 4 is a partial schematic view of a range hood according to a first embodiment of the present invention;

fig. 5 is a schematic view of a range hood according to a first embodiment of the present invention in a first open state;

fig. 6 is a first open state sectional view of the range hood according to the first embodiment of the present invention;

fig. 7 is a schematic diagram of a second opening state of the range hood according to the first embodiment of the present invention;

fig. 8 is a sectional view of a range hood according to the first embodiment of the present invention in a second opened state;

fig. 9 is a schematic view of a range hood according to a second embodiment of the present invention in a closed state;

fig. 10 is a sectional view of a range hood according to a second embodiment of the present invention in a closed state;

fig. 11 is a partial schematic view of a range hood according to a second embodiment of the present invention;

fig. 12 is a schematic view of a movement mechanism of a range hood in a closed state according to a second embodiment of the present invention;

FIG. 13 is an exploded schematic view of the motion mechanism of FIG. 12;

fig. 14 is a schematic view of an open state of a range hood according to a second embodiment of the present invention;

fig. 15 is a sectional view of a range hood according to a second embodiment of the present invention in an opened state;

fig. 16 is a partial schematic view of a range hood according to a second embodiment of the present invention in an open state;

fig. 17 is a schematic view of a movement mechanism of a range hood in an open state according to a second embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Example one

Referring to fig. 1 to 4, a range hood includes a box 1 and a fan system 2 disposed in the box 1. Preferably, the fan system 2 adopts a centrifugal fan, and an air inlet of the fan system 2 faces forward.

The casing 1 may have a substantially hollow rectangular parallelepiped shape, and the dimensions in the left-right direction, the front-back direction, and the up-down direction are the length, width, and height of the casing 1, respectively. The cabinet 1 includes a front panel 11 at a front side and a bottom panel 12 at a bottom. The front side of the box body 1 is opened to form an air inlet 13, the front panel 11 is positioned above the air inlet 13, and the oil smoke entering from the air inlet 13 is sucked by the air inlet on the front side of the fan system 2. The smoke baffle plate component 3 can be arranged on the front side of the air inlet 13, so that the smoke gathering effect is improved, and the oil smoke is prevented from escaping. The bottom plate 12 is inclined downward from front to rear, and may be continuously inclined at a rear side portion thereof, or may be a flat plate extending horizontally for facilitating arrangement of an oil cup (not shown). The box body 1 further comprises a cigarette collecting plate 14 arranged at the air inlet 13, and the front panel 11 and the cigarette blocking plate assembly 3 are arranged on the front side of the cigarette collecting plate 14.

In this embodiment, the front panel 11 is in an upright position and remains flush with the front panel 11 when the smoke barrier assembly 3 is closed, forming a substantially unbroken plane. The smoke barrier assembly 3 comprises a first smoke barrier 31 and a second smoke barrier 32 arranged up and down.

The range hood further comprises a movement mechanism for driving the smoke baffle component 3, the movement mechanism comprises a driving mechanism 41, a first connecting piece 42 and a second connecting piece 43, and the driving mechanism 41 is located on the rear side of the smoke collecting plate 14 facing the inside of the box body 1. One end (upper end) of the first connecting member 42 is rotatably connected to the front panel 11 via a first leg 44, the other end (lower end) of the first connecting member 42 is rotatably connected to one end (upper end) of the second connecting member 43, and the other end (lower end) of the second connecting member 43 is rotatably connected to the output end of the driving mechanism 41. The rotating shafts of the rotating joints extend in the left-right direction. The part of the first connecting piece 42 between the two ends is fixedly connected with the first smoke baffle 31, and the part of the second connecting piece 43 between the two ends is fixedly connected with the second smoke baffle 32. The first connecting piece 42 and the second connecting piece 43 respectively penetrate through the cigarette holding plate 14 from the rear side of the cigarette holding plate 14 to be connected with the cigarette blocking plate assembly 3. In the present embodiment, the first connecting member 42 and the second connecting member 43 are respectively a substantially rod member, and other shapes such as a plate member, a support, a frame, etc. may be adopted to connect the driving mechanism 41 and the smoke barrier, and also to function as a support for the smoke barrier.

The driving mechanism 41 can push the lower end of the second connecting piece 43 to rotate back and forth in the vertical plane, and then drive the second smoke baffle 32 to turn over relative to the box body 1, and the rotation of the second connecting piece 43 can also drive the first connecting piece 42 to rotate around the first supporting leg 44, so that the first smoke baffle 31 turns over relative to the box body 1. In the present embodiment, the driving mechanism 41 is an electric push rod, which is fixedly connected to the rear side wall of the case 1 through the second leg 45, and maintains an angle with the case 1. Preferably, the driving mechanism 41 extends gradually downward from front to back.

When the range hood is not in operation, the range hood is in a closed state, the output end of the driving mechanism 41 is in a maximum retraction state, and the smoke baffle assembly 3 is flush with the front panel 11.

When the range hood works, the output end of the driving mechanism 41 extends forward, pushing the lower end of the second connecting piece 43 to rotate forward, and simultaneously the lower end of the first connecting piece 42 is driven to rotate forward, so that the first smoke baffle 31 and the second smoke baffle 32 act simultaneously. The opening angle of the smoke barrier assembly 3 can be adjusted according to the amount of smoke or the actual demand of the user, and referring to fig. 5 and 6, the second smoke barrier 32 is in a vertical state, referring to fig. 7 and 8, and the second smoke barrier 32 is in a state where the lower end is inclined forward relative to the upper end.

For the cigarette board of a segmentation, the cigarette board lower extreme is in the circumstances of same position in the back and forth direction, and the cigarette scope of holding together of this embodiment is great, and the region between first cigarette board 31, second cigarette board 32 and the air intake 13 constitutes holds together the cigarette space. And, the cigarette board subassembly 3 of keeping off of this embodiment is when opening the position, and its minimum is higher, can improve the visual scope in the user's use, reduces the risk that shelters from the sight, improves the user and uses experience.

Because the fan system 2 is vertically arranged, the oil smoke movement track and the air inlet channel form an included angle of 90 degrees. After the smoke barrier assembly 3 of the present embodiment is adopted, as shown by the dotted line with an arrow in fig. 6 and 8, after the oil smoke moves to the second smoke barrier 32, part of the oil smoke is reflected, and the oil smoke enters the air inlet 13; and the oil smoke directly rising to the first smoke barrier 31 and moving to the first smoke barrier 31 after being reflected can directly move to the air inlet 13 after being reflected by the first smoke barrier 31. Therefore, the movement track of the oil smoke entering the smoke gathering area can be effectively improved, compared with a range hood with a one-section type smoke baffle, the range hood with the smoke gathering area is enlarged, the curve of the oil smoke entering the air inlet is smoother, and the oil smoke absorption effect can be effectively improved.

Example two

Referring to fig. 9 to 11, in the present embodiment, the difference from the first embodiment is that only the first smoke baffle 31 and the second smoke baffle 32 are disposed on the front side of the box body 1, the upper end of the first smoke baffle 31 is rotatably connected to the upper end of the front side of the box body 1, the lower end of the first smoke baffle 31 is rotatably connected to the upper end of the second smoke baffle 32, and the lower end of the second smoke baffle 32 is a free end. The first smoke barrier 31 and the second smoke barrier 32 can jointly close the air inlet 13 at the front side of the box body 1. The rotation axes of the first smoke barrier 31 and the second smoke barrier 32 each extend in the left-right direction.

The first smoke baffle 31 is provided with a first smoke baffle bracket 311 towards the rear side in the box body 1 for being connected with the moving mechanism, and the second smoke baffle 32 is provided with a second smoke baffle bracket 321 towards the rear side in the box body 1 for being connected with the moving mechanism. The smoke barrier assembly 3 further comprises a first baffle 33 extending forward and backward provided on the left and right sides of the first smoke barrier 31, respectively, and a second baffle 34 extending forward and backward provided on the left and right sides of the second smoke barrier 32, respectively.

Referring to fig. 12 and 13, the driving mechanism 41 is a motor and is fixed to the housing 1 by a mounting bracket 411. The transmission mechanism further comprises a first link 48, a second link 42 'and a third link 43'. One end of the second link 42 ' is rotatably connected to the output end of the driving mechanism 41, and the other end of the second link 42 ' is rotatably connected to one end of the third link 43 '.

The moving mechanism further comprises a third connecting piece 46 and a fourth connecting piece 47, wherein the third connecting piece 46 is fixedly connected with the first smoke barrier support 311, and the fourth connecting piece 47 is fixedly connected with the second smoke barrier support 321. When in the closed state, the third 46 and fourth 47 connectors extend longitudinally, preferably in a vertical direction. One end of the third connecting member 46 is rotatably connected to the front end of the mounting bracket 411, so that the first smoke barrier 31 is rotatably connected to the box body 1, and the other end of the third connecting member 46 is rotatably connected to one end of the fourth connecting member 47, so that the two smoke barrier brackets can be rotatably connected. The other end of the third link 43' is rotatably connected to a portion between both ends of the third link 46. The pins at the connections are not shown in the figures. In the present embodiment, the third connecting member 46 and the fourth connecting member 47 are respectively a general rod member, and other shapes such as a plate member, a support, a frame, etc. may be adopted to connect the driving mechanism 41 and the smoke barrier, and also to function as a support for the smoke barrier.

The motion mechanism further comprises a connecting seat 49 fixed on the cigarette collecting plate, in this embodiment, fixed on the rear side surface of the cigarette collecting plate 14, one end of the first link 48 is rotatably connected with the connecting seat 49, and the other end of the first link 48 is rotatably connected with the second cigarette retaining plate support 321. In the closed state, the first link 48 extends in the longitudinal direction, preferably in the vertical direction.

The third connecting member 46 and the first connecting rod 48 are connected with the corresponding smoke baffle bracket by penetrating the smoke collecting plate 14 from the rear side of the smoke collecting plate 14. Further, the rotation axes of the second link 42 ', the third link 43', the third link 46, the fourth link 47, and the first link 48 all extend in the left-right direction.

A decorative shaft 5 is arranged between the lower end of the first smoke baffle 31 and the upper end of the second smoke baffle 32.

When the range hood needs to be opened, referring to fig. 14 to 17, the driving mechanism 41 is started to drive the lower end (the end connected with the third connecting rod 43 ') of the second connecting rod 42 ' to rotate forward, so as to push the third connecting rod 43 ' to rotate forward and upward, and the first smoke baffle 31 is turned forward around the connection between the third connecting rod 46 and the mounting bracket 411; at the same time, the second smoke damper 32 is pushed forward by the rotational coupling of the third link 46 and the fourth link 47. The center of connection between the third connecting member 46 and the mounting bracket 411 is defined as a hinge point a (which is the rotation center of the first smoke barrier 31) and the center of connection between the fourth connecting member 47 is defined as a hinge point B, the center of connection between the first connecting member 48 and the second smoke barrier support 321 is defined as a hinge point C, and the center of connection between the first connecting member 48 and the connecting bracket 49 is defined as a hinge point D. The four hinge points form a double-crank mechanism, so that the second smoke baffle 32 is always kept vertical in the opening process.

Preferably, when the smoke baffle assembly is completely opened, the first smoke baffle 31 is in a horizontal state and is perpendicular to the second smoke baffle 32, and the air inlet mode is downward air inlet and forward air inlet. Compared with the common mode of turning the single smoke baffle, the range hood disclosed by the utility model has the advantages that the distance between the whole range hood and a user is increased after the range hood is opened, the risk of shielding the sight is reduced, the smoke collecting cavity is enlarged due to the vertical state of the second smoke baffle 32, and the oil smoke absorption effect is improved.

In the process of the movement of the two smoke baffles, the first baffle 33 moves along with the first smoke baffle 31, and the second baffle 34 moves along with the second smoke baffle 32, so that the possibility of the oil smoke on the left side and the right side escaping is reduced. And the gap generated in the moving process of the two smoke baffles can be compensated by the decorative shaft 5, so that a negative pressure space is ensured, and the possibility that the oil smoke escapes from the middle of the first smoke baffle 31 and the second smoke baffle 32 after rising when the range hood is opened is reduced.

Alternatively, the driving mechanism 41 may be an electric push rod or other device, so long as the second link 42' is rotated.

Claims (13)

1. The utility model provides a range hood, includes box (1), the front side of box (1) is formed with air intake (13), box (1) front side is provided with can open or close keeping off cigarette board subassembly (3) of air intake (13), its characterized in that: keep off cigarette board subassembly (3) including first cigarette board (31) and the second cigarette board (32) of arranging from top to bottom, first cigarette board (31) of keeping off rotate with box (1) and second cigarette board (32) respectively and are connected, the axis of rotation of first cigarette board (31) and second cigarette board (32) extends in the left and right directions.

2. The range hood of claim 1, wherein: the box (1) comprises a front panel (11) located on the front side, the front panel (11) is located above the air inlet (13), and the first smoke baffle (31) is rotatably connected with the front panel (11).

3. The range hood of claim 2, wherein: the range hood is still including the motion that is used for the drive to keep off cigarette board subassembly (3), the motion includes actuating mechanism (41), first connecting piece (42) and second connecting piece (43), first connecting piece (42) rotate with front panel (11) and are connected, first connecting piece (42) still rotate with second connecting piece (43) and are connected, second connecting piece (43) rotate with the output of actuating mechanism (41) and are connected and can the fore-and-aft rotation, first connecting piece (42) still are connected fixedly with first cigarette board (31), second connecting piece (43) still are connected fixedly with second cigarette board (32).

4. The range hood of claim 3, wherein: the driving mechanism (41) is an electric push rod, and the driving mechanism (41) is fixedly connected with the rear side wall of the box body (1).

5. The range hood of claim 1, wherein: the upper end of the first smoke baffle (31) is rotatably connected with the upper end of the front side of the box body (1), and the lower end of the first smoke baffle (31) is rotatably connected with the upper end of the second smoke baffle (32).

6. The range hood of claim 5, wherein: range hood is still including the motion that is used for driving to keep off cigarette board subassembly (3), motion includes actuating mechanism (41), third connecting piece (46) and fourth connecting piece (47), third connecting piece (46) are connected fixedly with first cigarette board (31), fourth connecting piece (47) are connected fixedly with second cigarette board (32), third connecting piece (46) can rotate with box (1) and are connected, third connecting piece (46) still rotate with fourth connecting piece (47) and are connected, actuating mechanism (41) can drive third connecting piece (46) around rotating with box (1) junction to drive first cigarette board (31) and second cigarette board (32) motion.

7. The range hood of claim 6, wherein: the movement mechanism further comprises a first connecting rod (48), one end of the first connecting rod (48) can be rotatably connected with the box body (1), and the other end of the first connecting rod (48) is rotatably connected with the second smoke baffle (32), so that the second smoke baffle (32) is kept vertical in the movement process.

8. The range hood of claim 7, wherein: a cigarette gathering plate (14) is arranged at the air inlet (13), and the cigarette blocking plate component (3) is arranged on the front side of the cigarette gathering plate (14); the motion mechanism further comprises a connecting seat (49), the connecting seat (49) is fixedly arranged on the cigarette gathering plate (14), the first connecting rod (48) is rotatably connected with the connecting seat (49) and connected with the box body (1), and the third connecting piece (46), the fourth connecting piece (47) and the first connecting rod (48) penetrate through the cigarette gathering plate (14) from the rear side of the cigarette gathering plate (14) and are connected with the corresponding cigarette blocking plate.

9. The range hood of claim 6, wherein: the driving mechanism (41) is a motor, the movement mechanism further comprises a second connecting rod (42 ') and a third connecting rod (43'), one end of the second connecting rod (42 ') is connected with the output end of the driving mechanism (41) and is driven by the driving mechanism (41) to rotate, the other end of the second connecting rod (42') is rotatably connected with one end of the third connecting rod (43 '), and the other end of the third connecting rod (43') is rotatably connected with a part between two ends of a third connecting piece (46).

10. The range hood of claim 6, wherein: the driving mechanism (41) is fixed with the box body (1) through a mounting bracket (411), and the end part of the third connecting piece (46) is rotatably connected with the mounting bracket (411) to realize the connection with the box body (1).

11. The range hood according to any one of claims 5 to 10, wherein: keep off cigarette board subassembly (3) still include first baffle (33) that extend around what set up respectively in the left and right sides of first cigarette board (31) to and second baffle (34) that extend around what set up respectively in the left and right sides of second cigarette board (32).

12. The range hood according to any one of claims 5 to 10, wherein: a decorative shaft (5) is arranged between the lower end of the first smoke baffle (31) and the upper end of the second smoke baffle (32).

13. The range hood according to any one of claims 1 to 10, wherein: a fan system (2) is arranged in the box body (1), and an air inlet of the fan system (2) faces forwards.

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