CN112361399A

CN112361399A - Range hood capable of distributing air volume

Info

Publication number: CN112361399A
Application number: CN202010809727.XA
Authority: CN
Inventors: 张静; 徐鑫; 刘杰; 朱昆仑; 刘剑涛
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-02-12
Anticipated expiration: 2040-08-13
Also published as: CN112361399B

Abstract

The invention relates to a range hood capable of distributing air volume, which comprises a shell, wherein a transversely extending smoke inlet is formed in the front side wall of the lower part of the shell, the smoke inlet is provided with a left part and a right part which are arranged side by side in the transverse direction, an adjusting structure capable of adjusting the opening degree of the left part and the right part of the smoke inlet is arranged at the smoke inlet, and the adjusting structure comprises a first baffle, a second baffle and a driving mechanism. The invention sets an adjusting structure which can adjust the opening degree of the left part and the right part of the smoke inlet at the smoke inlet, the adjusting structure comprises a first baffle plate and a second baffle plate which can turn back and forth and a driving mechanism which is used for driving the first baffle plate and the second baffle plate to turn over, when a single-side furnace end is needed, the opening degree of one side of the smoke inlet can be increased and the opening degree of the other side of the smoke inlet can be reduced or closed through the turning over of the first baffle plate and the second baffle plate, when double-side furnace ends are needed, the opening degrees of both sides of the smoke inlet can be increased, thereby reasonably distributing the air quantity according to the needs, avoiding the smoke leakage and improving the smoke absorption effect.

Description

Range hood capable of distributing air volume

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a range hood capable of distributing air volume.

Background

Range hood is the electrical apparatus that is essential in the kitchen at present, and is comparatively common and use more extensively to arrange oily smoke purification system in last.

At present, the upward-exhaust oil fume purification system is mainly divided into two types: a top-suction range hood and a near-suction range hood. The top-suction type range hood is more attractive, but the smoke inlet is higher, and the smoke suction effect is limited; compared with a top-suction range hood, the near-suction range hood has a lower smoke inlet, but is influenced by the appearance structure and the internal air duct structure of the near-suction range hood, and the existing near-suction range hood cannot better approach oil smoke, so that the oil smoke suction effect is limited to a great extent.

For the existing Chinese kitchen, the kitchen range usually has two furnace ends arranged side by side, one of the furnace ends is used independently or two furnace ends are used simultaneously during cooking, no matter which using state is, the oil smoke generating source is the position corresponding to the two furnace ends, and the oil smoke concentration at the position corresponding to the middle of the range hood is relatively small. Most families can not use two furnace ends to stir-fry with big fire simultaneously, use one furnace end to fry dish (produce oil smoke volume very big) under the more circumstances, use another furnace end to cook (produce oil smoke volume less), adopt current range hood, because the lampblack absorber air intake and the amount of wind size that two furnace ends correspond do not have the difference, just there is unilateral oil smoke to discharge in time inadequately easily, take place the problem that the oil smoke escapes.

In order to solve the above problems, the prior application of the applicant, namely a range hood (application number: 201920901581.4), discloses a structure, wherein a baffle plate assembly capable of dividing a smoke inlet cavity into two air inlet channels which are arranged left and right and are relatively independent is arranged in the smoke inlet cavity, and the baffle plate assembly is connected with an adjusting mechanism capable of adjusting the position of the baffle plate assembly so as to control the opening degree of the two air inlet channels. The adjusting mechanism can adjust the opening of the air channel, so that the air quantity of the air inlet sides corresponding to the two burner ends is adjusted and controlled, and the oil smoke absorption effect is improved. At present, in the prior art, a range hood capable of directly regulating and controlling the air suction effect corresponding to a single-side burner by regulating the size of an air inlet corresponding to the burner is not available.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a range hood capable of adjusting the size of a single-side air inlet according to requirements so as to improve the range hood effect and distributing air volume.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a can carry out range hood of amount of wind distribution, includes the casing and locates the fan system in this casing, the casing upper portion is located to the fan system, it has the smoke inlet of horizontal extension, its characterized in that to open on the preceding lateral wall of casing lower part: the cigarette inlet is provided with a left part and a right part which are arranged side by side in the transverse direction, the cigarette inlet is provided with an adjusting structure which can adjust the opening size of the left part and the right part of the cigarette inlet, the adjusting structure comprises a first baffle, a second baffle and a driving mechanism, the first baffle and the second baffle are respectively arranged corresponding to the left part and the right part of the cigarette inlet and respectively rotate to be connected with the cigarette inlet, and the driving mechanism is used for driving the first baffle and/or the second baffle to overturn front and back to adjust the opening size of the left part and/or the right part.

In the above scheme, the lower edges of the first baffle plate and the second baffle plate are respectively connected to the lower edge of the smoke inlet in a rotating manner, and an air inlet capable of adjusting the opening degree due to the rotation of the baffle plates is formed between the upper edge of the first baffle plate and the upper edge of the second baffle plate and the corresponding upper edge of the smoke inlet. An air inlet is formed between the upper edge of the first baffle plate, the upper edge of the second baffle plate and the corresponding upper edge of the smoke inlet, and a fan system is arranged above the air inlet to facilitate the upward discharge of oil smoke; meanwhile, the opening degrees of the air inlets of the left part and the right part can be respectively adjusted, so that the air quantity of the fans of the left part and the right part is distributed, the requirement that the two furnace ends are used independently or simultaneously (the two furnace ends generate different oil smoke quantities) is met, the smoke leakage is avoided, and the oil smoke absorption effect is improved.

The driving mechanism comprises an elastic piece, a swinging piece and a driving piece, wherein the elastic piece enables a first baffle plate and a second baffle plate to always keep a backward overturning trend, the swinging piece can be rotatably arranged at the rear sides of the first baffle plate and the second baffle plate, a first shifting arm and a second shifting arm which can abut against the rear side walls of the first baffle plate and the second baffle plate along with the rotation of the swinging piece so as to push the swinging piece to overturn forwards by overcoming the elasticity of the elastic piece are arranged on the outer peripheral wall of the swinging piece, and the driving piece is used for driving the swinging piece to rotate. By adopting the structure, the front and back overturning of the first baffle and the second baffle is realized, and then the air volume distribution of the left part and the right part is realized.

Preferably, the swinging member has a rotating shaft arranged parallel to the first baffle and the second baffle, the first shifting arm and the second shifting arm are arranged at an interval along the axial direction of the rotating shaft and extend along the radial direction, the first shifting arm is arranged corresponding to the rear side wall of the first baffle, and the second shifting arm is arranged corresponding to the rear side wall of the second baffle. In the circumferential direction of the swinging piece, an included angle of 80-130 degrees is formed between the first shifting arm and the second shifting arm. Further preferably, an included angle of 100 degrees is formed between the first shifting arm and the second shifting arm. By adopting the structure, the turnover angle of the first baffle and the second baffle can be adjusted and controlled.

Preferably, the end of the first shifting arm is provided with a first roller which can be in running fit with the rear side wall of the first baffle, and the end of the second shifting arm is provided with a second roller which can be in running fit with the rear side wall of the second baffle. The roller can adopt soft rollers such as silica gel and rubber or a soft sleeve coated outside the roller, which is beneficial to reducing the friction between the driving mechanism and the first baffle plate and the second baffle plate, thereby reducing the sound when the shifting arm is contacted with the baffle plate and reducing the noise.

In the invention, the driving mechanism further comprises a limiting piece which is arranged beside the swinging piece and used for limiting the rotating angle of the swinging piece, the limiting piece is arranged close to the first shifting arm, the first shifting arm is abutted against the first edge of the limiting piece when the swinging piece rotates to a state that the first shifting arm pushes the first baffle plate to forwards turn to the maximum angle, and the second shifting arm is separated from the second baffle plate so as to enable the second baffle plate to backwards turn to the maximum angle; when the swinging piece rotates to a state that the second shifting arm pushes the second baffle to turn forwards to the maximum angle, the first shifting arm is abutted against a second edge of the limiting piece opposite to the first edge, and the first shifting arm is separated from the first baffle so that the first baffle turns backwards to the maximum angle. The limiting part can limit the position of the shifting arm, so that the baffle is limited in a corresponding state, and the overturning accuracy of the baffle is improved.

In order to facilitate the installation and assembly of the driving mechanism, the driving mechanism further comprises a support for supporting the swinging piece, the support is constrained in the smoke inlet cavity and is provided with a supporting arm extending towards the first baffle and the second baffle, the rotating shaft of the swinging piece is rotatably connected onto the supporting arm, and the driving piece is arranged beside the support and the output shaft is connected with the rotating shaft. A first baffle extending backwards is arranged at the edge of the first baffle close to the middle part of the smoke inlet, and a first yielding port for the rotating shaft to pass through is formed in the first baffle; the edge of the second baffle plate close to the middle of the smoke inlet is provided with a second baffle plate extending backwards, and a second yielding port for the rotating shaft to pass through is formed in the second baffle plate.

Preferably, the bottom wall of the smoke inlet cavity forms an oil guide plate which gradually inclines from front to back and from bottom to top, the rear edge of the first baffle plate/the second baffle plate is arranged close to the rear side wall of the smoke inlet cavity under the state that the first baffle plate/the second baffle plate is overturned backwards to the maximum angle, and the lower edge of the first baffle plate/the second baffle plate is arranged close to the oil guide plate. By adopting the structure, when the furnace end is used independently, the blocking piece can prevent the oil smoke from moving to the side in the smoke inlet cavity, thereby improving the air distribution effect, shortening the upward exhaust stroke of the oil smoke and further improving the oil smoke absorption effect.

In order to facilitate assembly and connection, a concave assembly plate is arranged in the middle of the oil guide plate, and the bottom of the support is fixed on the assembly plate.

In each scheme, the lower part of the shell is provided with a vertically extending smoke inlet cavity, the upper part of the shell is provided with a smoke collecting cavity communicated with the smoke inlet cavity, the smoke collecting cavity extends forwards to form a mounting cavity for mounting a fan system, and the smoke inlet is formed in the front side wall of the lower part of the smoke inlet cavity.

In the invention, when the air inlet is opened, the first baffle/the second baffle form a guide plate which is gradually inclined from bottom to top and from front to back. The first baffle and the second baffle can be matched with each other to realize air distribution of the left air inlet and the right air inlet, and can also guide oil smoke upwards in a corresponding air inlet using state; due to the vertical arrangement of the smoke inlet cavity, after the oil smoke enters the smoke inlet cavity, the oil smoke can be prevented from diffusing in the bottom area of the smoke inlet cavity, so that the stroke of the oil smoke at the bottom of the smoke inlet cavity is reduced, and the oil smoke is directly discharged along the guide plate; simultaneously, for the face of bending that exists in advance smoke chamber bottom, the whole inclined plane structure of guide plate enables the more stable flow of oil smoke.

Compared with the prior art, the invention has the advantages that: the invention sets an adjusting structure which can adjust the opening degree of the left part and the right part of the smoke inlet at the smoke inlet, the adjusting structure comprises a first baffle plate and a second baffle plate which can turn back and forth and a driving mechanism which is used for driving the first baffle plate and the second baffle plate to turn over, when a single-side furnace end is needed, the opening degree of one side of the smoke inlet can be increased and the opening degree of the other side of the smoke inlet can be reduced or closed through the turning over of the first baffle plate and the second baffle plate, when double-side furnace ends are needed, the opening degrees of both sides of the smoke inlet can be increased, thereby reasonably distributing the air quantity according to the needs, avoiding the smoke leakage and improving the smoke absorption effect.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention (the left and right air inlets have different opening degrees);

FIG. 2 is a schematic structural diagram of an embodiment of the present invention (both the left and right air inlets are in the maximum opening);

FIG. 3 is a cross-sectional view of an embodiment of the present invention (different opening of the left and right air inlets);

FIG. 4 is a schematic diagram of a partial structure of an adjusting structure according to an embodiment of the present invention (left closed and right open states);

FIG. 5 is a schematic view of the structure of FIG. 4 from another angle;

FIG. 6 is a schematic structural diagram of a driving mechanism according to an embodiment of the present invention (left closed and right open states);

FIG. 7 is a schematic view of the construction of the oscillating member in the embodiment of the present invention;

FIG. 8 is a side view of FIG. 7;

FIG. 9 is a schematic structural view of a driving mechanism according to an embodiment of the present invention (left-open and right-open states);

fig. 10 is a schematic structural view of the driving mechanism according to the embodiment of the present invention (left open and right closed states).

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 10, the range hood capable of distributing air volume in the present embodiment includes a housing 1 and a fan system disposed in the housing 1. The lower part of the shell 1 is provided with a vertically extending smoke inlet cavity 11, the front side wall of the lower part of the shell 1 is provided with a smoke inlet 111 communicated with the smoke inlet cavity 11, as shown in fig. 3, the upper part of the shell 1 is provided with a smoke collecting cavity 12 communicated with the smoke inlet cavity 11, the smoke collecting cavity 12 extends forwards to form a mounting cavity 13 for mounting a fan system, it should be noted that the mounting cavity 13 is used for mounting the fan system, but the mounting position of the fan system should not be completely limited in the mounting cavity 13, and because the smoke collecting cavity 12 and the mounting cavity 13 are an integral body, when the fan system is mounted, the part of the fan system can be located in the smoke collecting cavity 12 according to requirements. Because the smoke inlet cavity 11 at the lower part of the shell 1 vertically extends, the smoke inlet cavity 11 can be made thinner along the width in the front-back direction and can extend downwards to be sufficiently close to the cooker and a smoke generating source, so that the smoke can be quickly sucked into the smoke inlet cavity to be discharged upwards once being generated, and the smoke suction effect is improved.

As shown in fig. 2, the smoke inlet 111 of the present embodiment has a left portion 11a and a right portion 11b which are laterally arranged side by side, an adjusting structure 2 capable of adjusting the opening degree of the left portion 11a and the right portion 11b is disposed at the smoke inlet 111, the adjusting structure 2 includes a first baffle plate 21, a second baffle plate 22 and a driving mechanism 23, the first baffle plate 21 and the second baffle plate 22 are respectively disposed corresponding to the left portion 11a and the right portion 11b of the smoke inlet 111, the lower edges of the first baffle plate 21 and the second baffle plate 22 are respectively rotatably connected to the lower edge of the smoke inlet 111 through the matching structure of the shaft 100a and the shaft hole 100b, and an air inlet 110 capable of adjusting the opening degree due to the rotation of the baffle plates is formed between the upper edge of the first baffle plate 21, the upper edge of the second baffle plate 22 and the upper edge of the corresponding smoke inlet 111. The driving mechanism 23 is used for driving the first baffle 21 and the second baffle 22 to turn back and forth so as to adjust the opening degree of the air inlet 110 corresponding to the left portion 11a and the right portion 11 a.

In the opened state of the intake vent 110, the first baffle 21/the second baffle 22 of the present embodiment forms a baffle that gradually inclines from bottom to top and from front to back. The first baffle 21 and the second baffle 22 of the present embodiment can be matched with each other to realize the air distribution of the left and right air inlets 110, and can also guide the oil smoke upwards in the use state of the corresponding air inlets 110; due to the vertical arrangement of the smoke inlet cavity 11 in the embodiment, by adopting the structure, after the oil smoke enters the smoke inlet cavity 11, the oil smoke can be prevented from diffusing in the bottom area of the smoke inlet cavity 11, so that the stroke of the oil smoke at the bottom of the smoke inlet cavity 11 is reduced, and the oil smoke is directly discharged along the guide plate; meanwhile, relative to the bending surface at the bottom of the smoke inlet cavity 11, the whole inclined surface structure of the guide plate enables the oil smoke to flow more stably.

Specifically, as shown in fig. 4, 5 and 6, the driving mechanism 23 includes an elastic member 231, an oscillating member 232 and a driving member 233. The elastic members 231 are two linear springs, and the two linear springs are respectively arranged corresponding to the first baffle 21 and the second baffle 22, so that the first baffle 21 and the second baffle 22 always keep a tendency of being turned backwards. The upper end of the linear spring is fixed on the rear side wall of the lower portion of the first shutter 21/second shutter 22, and the lower end of the linear spring is fixed at the bottom of the casing 1 at a position on the rear side of the smoke inlet 111. The swinging member 232 is rotatably disposed at the rear side of the first baffle plate 21 and the second baffle plate 22, the outer peripheral wall of the swinging member 232 is provided with a first toggle arm 2321 and a second toggle arm 2322 which can abut against the rear side walls of the first baffle plate 21 and the second baffle plate 22 along with the rotation of the swinging member 232 so as to push the swinging member to turn forwards against the elastic force of the elastic member 231, and the driving member 233 is used for driving the swinging member 232 to rotate. The driving mechanism 23 is configured to facilitate the forward and backward turning of the first baffle 21 and the second baffle 22, and further to achieve the air volume distribution between the left portion 11a and the right portion 11 b.

The swinging member 232 has a rotating shaft 2323 arranged parallel to the first and

second blocking plates

21 and 22, and as shown in fig. 7 and 8, the first and second pulling

arms

2321 and 2322 are arranged at intervals in the axial direction of the rotating shaft 2323 and extend in the radial direction, the first pulling arm 2321 is arranged corresponding to the rear side wall of the first blocking plate 21, and the second pulling arm 2322 is arranged corresponding to the rear side wall of the second blocking plate 22. In the circumferential direction of the swinging member 232, an included angle a of 80 ° to 130 ° is formed between the first shifting arm 2321 and the second shifting arm 2322, and the included angle a is preferably 100 °. Such a structure is advantageous for adjusting and controlling the turning angles of the first baffle plate 21 and the second baffle plate 22.

The end of the first shifting arm 2321 is provided with a first roller 200 capable of rotatably engaging with the rear sidewall of the first baffle 21, and the end of the second shifting arm 2322 is provided with a second roller 300 capable of rotatably engaging with the rear sidewall of the second baffle 22. The roller can adopt soft rollers such as silica gel and rubber or a soft sleeve coated outside the roller, which is beneficial to reducing the friction between the driving mechanism 23 and the first baffle 21 and the second baffle 22, thereby reducing the sound when the shifting arm is contacted with the baffles and reducing the noise.

The driving mechanism 23 of this embodiment further includes a limiting member 234 disposed beside the swinging member 232 and used for limiting the rotation angle of the swinging member 232, the limiting member 234 is disposed close to the first shift arm 2321, when the swinging member 232 rotates to a state where the first shift arm 2321 pushes the first blocking plate 21 to turn forward to a maximum angle, the first shift arm 2321 abuts against a first edge 2341 of the limiting member 234, and the second shift arm 2322 is separated from the second blocking plate 22 so as to turn the second blocking plate 22 backward to a maximum angle; when the swinging member 232 rotates to a state where the second shift arm 2322 pushes the second blocking plate 22 to turn forward to a maximum angle, the first shift arm 2321 abuts against a second edge 2342 of the limiting member 234 opposite to the first edge 2341, and the first shift arm 2321 is separated from the first blocking plate 21 so as to turn the first blocking plate 21 backward to a maximum angle. The position of the shifting arm can be limited by the limiting part 234, so that the baffle is limited in a corresponding state, and the overturning accuracy of the baffle is improved.

In order to facilitate the installation and assembly of the driving mechanism 23, the driving mechanism 23 further includes a support 235 for supporting the swinging member 232, the support 235 is constrained in the smoke inlet cavity 11 and has a support arm 2351 extending towards the first baffle 21 and the second baffle 22, the rotating shaft 2323 of the swinging member 232 is rotatably connected to the support arm 2351, the driving member 233 is a motor capable of rotating forward and backward, and is disposed beside the support 235, and the output shaft is connected to the rotating shaft 2323. As shown in fig. 5, a first blocking plate 211 extending backwards is disposed at an edge of the first blocking plate 21 close to the middle of the smoke inlet 111, and a first abdicating port 2111 through which the rotating shaft 2323 passes is opened on the first blocking plate 211; the edge of the second blocking plate 22 close to the middle of the smoke inlet 111 is provided with a second blocking plate 221 extending backwards, and the second blocking plate 221 is provided with a second abdicating opening 2211 through which the rotating shaft 2323 passes.

In this embodiment, the bottom wall of the smoke inlet chamber 11 forms an oil guide plate 112 which is inclined gradually from front to back and from bottom to top, and in a state where the first baffle plate 21/the second baffle plate 22 are turned backwards to a maximum angle, the rear edge of the first baffle plate 21/the second baffle plate 22 is arranged close to the rear side wall of the smoke inlet chamber 11, and the lower edge of the first baffle plate 21/the second baffle plate 22 is arranged close to the oil guide plate 112. By adopting the structure, when the burner is used independently, the blocking piece can prevent the oil smoke from moving to the side in the smoke inlet cavity 11, thereby improving the air distribution effect, shortening the upward exhaust stroke of the oil smoke and further improving the oil smoke absorption effect. For convenience of assembly and connection, a concave assembly plate 113 is provided at the middle of the oil guide plate 112, and the bottom of the bracket 234 is fixed to the assembly plate 113.

When the range hood of the embodiment is used, when the left side burner is used alone but the right side burner is not used, the motor rotates to drive the swinging member 232 to rotate, so that the second shifting arm 2322 pushes the second baffle 22 to turn forwards to the maximum angle, and the air inlet 110 of the right part 11b is substantially closed, at this time, the first shifting arm 2321 abuts against the second edge 2342 (rear edge) of the limiting member 234, the first shifting arm 2321 is not in contact with the first baffle 21, and the first baffle 21 keeps turning backwards under the action of the elastic member 231 thereof, so that the opening degree of the air inlet 110 of the left part 11a reaches the maximum;

when the right burner is used alone but not used, the motor rotates reversely to drive the swinging member 232 to rotate, so that the first shifting arm 2321 rotates, after the end of the first shifting arm 2321 contacts the first baffle plate 21, the first baffle plate 21 starts to turn forward until the first baffle plate rotates to the maximum angle, the air inlet 110 of the left part 11a is closed approximately, at this time, the first shifting arm 2321 abuts against the first edge 2341 (front edge) of the limiting member 234, the second shifting arm 2322 does not contact the second baffle plate 22, and the second baffle plate 22 keeps turning backward under the action of the elastic member 231 thereof, so that the opening degree of the air inlet 110 of the right part 11b reaches the maximum;

when the double burner is needed to be used simultaneously, the motor rotates until the swinging member 232 is located at the rear side of the limiting member 234, at this time, the first shifting arm 2321 does not contact with the first baffle 21, the second shifting arm 2322 does not contact with the second baffle 22, and the first baffle 21 and the second baffle 22 respectively keep turning backwards under the action of the elastic member 231 thereof, so that the opening degrees of the air inlets 110 of the left portion 11a and the right portion 11b reach the maximum.

It should be noted that, for convenience of description, the above-mentioned adjusting process of the present embodiment shows left-open and right-close, left-close and right-open, and left-open and right-open states, but the adjusting structure of the present invention should also be able to achieve a half-open state of the air inlet on either side according to needs, and is not limited to a fully-open or fully-close state. For example, in the present invention, by controlling the lengths or swing angles of the first and second shifting

arms

2321 and 2322, a gap of about 20mm is left between the upper edge of the first baffle and the upper edge of the smoke inlet when the first baffle is turned forward to the maximum angle, so that the main air volume of the fan is concentrated at the air inlet corresponding to the second baffle when the second baffle is turned backward to the maximum angle, but the air volume of the fan corresponding to the first baffle can also meet the suction requirements of steam such as cooking vegetables and soup or other small oil smoke, thereby providing greater convenience for consumers.

Claims

1. The utility model provides a can carry out range hood of amount of wind distribution, includes casing (1) and locates the fan system in this casing (1), casing (1) upper portion is located to the fan system, it has horizontal extension's smoke inlet (111), its characterized in that to open on the preceding lateral wall of casing (1) lower part: the cigarette inlet (111) is provided with a left part (11a) and a right part (11b) which are arranged side by side in the transverse direction, an adjusting structure (2) capable of adjusting the opening degree of the left part (11a) and the right part (11b) of the cigarette inlet (111) is arranged at the cigarette inlet (111), the adjusting structure (2) comprises a first baffle plate (21), a second baffle plate (22) and a driving mechanism (23), the first baffle plate (21) and the second baffle plate (22) are respectively arranged corresponding to the left part (11a) and the right part (11b) of the cigarette inlet (111) and respectively and rotatably connected with the cigarette inlet (111), and the driving mechanism (23) is used for driving the first baffle plate (21) and/or the second baffle plate (22) to turn back and forth so as to adjust the opening degree of the left part (11a) and/or the right part (11 b).

2. The range hood capable of distributing air volume according to claim 1, wherein: the lower edges of the first baffle plate (21) and the second baffle plate (22) are respectively connected with the lower edge of the smoke inlet (111) in a rotating manner, and an air inlet (110) capable of adjusting the opening degree due to the rotation of the baffle plates is formed between the upper edge of the first baffle plate (21) and the upper edge of the second baffle plate (22) and the upper edge of the corresponding smoke inlet (111).

3. The range hood capable of distributing air volume according to claim 2, wherein: the driving mechanism (23) comprises an elastic piece (231), a swinging piece (232) and a driving piece (233), the elastic piece (231) enables the first baffle plate (21) and the second baffle plate (22) to always keep a backward overturning trend, the swinging piece (232) can be rotatably arranged on the rear sides of the first baffle plate (21) and the second baffle plate (22), a first shifting arm (2321) and a second shifting arm (2322) which can rotate along with the swinging piece (232) and abut against the rear side walls of the first baffle plate (21) and the second baffle plate (22) so as to push the swinging piece (233) to overcome the elastic force of the elastic piece (231) to overturn forwards are arranged on the peripheral wall of the swinging piece (232), and the driving piece (233) is used for driving the swinging piece (232) to rotate.

4. The range hood capable of distributing air volume according to claim 3, wherein: the swinging piece (232) is provided with a rotating shaft (2323) which is arranged in parallel with the first baffle plate (21) and the second baffle plate (22), the first shifting arm (2321) and the second shifting arm (2322) are arranged at intervals along the axial direction of the rotating shaft (2323) and extend in the radial direction, the first shifting arm (2321) is arranged corresponding to the rear side wall of the first baffle plate (21), and the second shifting arm (2322) is arranged corresponding to the rear side wall of the second baffle plate (22).

5. The range hood capable of distributing air volume according to claim 4, wherein: in the circumferential direction of the swinging piece (232), an included angle (a) of 80-130 degrees is formed between the first shifting arm (2321) and the second shifting arm (2322).

6. The range hood capable of distributing air volume according to claim 5, wherein: an included angle (a) of 100 degrees is formed between the first shifting arm (2321) and the second shifting arm (2322).

7. The range hood capable of distributing air volume according to claim 4, wherein: the end of the first shifting arm (2321) is provided with a first roller (200) which can be in running fit with the rear side wall of the first baffle (21), and the end of the second shifting arm (2322) is provided with a second roller (300) which can be in running fit with the rear side wall of the second baffle (22).

8. The range hood capable of distributing air volume according to claim 4, wherein: the driving mechanism (23) further comprises a limiting part (234) which is arranged at the side of the swinging part (232) and used for limiting the rotating angle of the swinging part (232), the limiting part (234) is arranged close to the first shifting arm (2321), when the swinging part (232) rotates to the state that the first shifting arm (2321) pushes the first baffle plate (21) to turn forwards to the maximum angle, the first shifting arm (2321) abuts against a first edge (2341) of the limiting part (234), and the second shifting arm (2322) is separated from the second baffle plate (22) so that the second baffle plate (22) turns backwards to the maximum angle; when the swinging piece (232) rotates to the state that the second shifting arm (2322) pushes the second baffle plate (22) to turn forwards to the maximum angle, the first shifting arm (2321) abuts against a second edge (2342) of the limiting piece (234) opposite to the first edge (2341), and the first shifting arm (2321) is separated from the first baffle plate (21) so that the first baffle plate (21) turns backwards to the maximum angle.

9. The range hood capable of distributing air volume according to claim 8, wherein: the driving mechanism (23) further comprises a support (235) for supporting the swinging piece (232), the support (235) is constrained in the smoke inlet cavity (111) and is provided with a support arm (2351) extending towards the first baffle (21) and the second baffle (22), a rotating shaft (2323) of the swinging piece (232) is rotatably connected to the support arm (2351), the driving piece (233) is arranged beside the support (235), and an output shaft is connected with the rotating shaft (2323).

10. The range hood capable of distributing air volume according to claim 9, wherein: a first baffle plate (211) extending backwards is arranged at the edge of the first baffle plate (21) close to the middle part of the smoke inlet (111), and a first clearance opening (2111) for the rotating shaft (2323) to pass through is formed in the first baffle plate (211); the edge of the second baffle (22) close to the middle of the smoke inlet (111) is provided with a second baffle (221) extending backwards, and the second baffle (221) is provided with a second position-giving opening (2211) for the rotating shaft to pass through.

11. The range hood capable of distributing air volume according to claim 10, wherein: the bottom wall of the shell (1) is provided with an oil guide plate (112) which is inclined from front to back and from bottom to top gradually, the rear edges of the first baffle plates (21) and the second baffle plates (22) are arranged close to the rear side wall of the shell (1) under the state that the first baffle plates (21) and the second baffle plates (22) are turned backwards to the maximum angle, and the lower edges of the first baffle plates (21) and the second baffle plates (22) are arranged close to the oil guide plate (112).

12. The range hood capable of distributing air volume according to claim 11, wherein: the middle part of the oil guide plate (112) is provided with a concave assembly plate (113), and the bottom of the bracket (235) is fixed on the assembly plate (113).

13. The range hood capable of distributing air volume according to claims 2-12, wherein: casing (1) lower part has vertical extension's smoke inlet chamber (11), casing (1) upper portion has collection smoke chamber (12) that are linked together with smoke inlet chamber (11), and this collection smoke chamber (12) extend forward and form installation cavity (13) that are used for installing fan system, smoke inlet (111) are seted up on the preceding lateral wall of this smoke inlet chamber (11) lower part.

14. The range hood capable of distributing air volume according to claim 13, wherein: when the air inlet (110) is in an open state, the first baffle (21)/the second baffle (22) form a flow guide plate which is gradually inclined from bottom to top and from front to back.