CN213237678U - Range hood capable of distributing air volume - Google Patents

Abstract

The utility model relates to a range hood that can carry out amount of wind distribution, which comprises a housin, the casing lower part has the smoke inlet chamber of vertical extension, it has the smoke inlet that is linked together with this smoke inlet chamber, 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, and the cigarette inlet is provided with an adjusting structure which can adjust the opening degree of the left part and the right part. When needs use the unilateral furnace end, the upset of above-mentioned first baffle of accessible, second baffle makes into the increase of smoke inlet one side aperture, opposite side aperture reduce or close, when needs use two side furnace ends, can all open into smoke inlet both sides aperture greatly to carry out rational distribution to the amount of wind as required, avoid running the cigarette, improve the oil absorption cigarette effect.

Description

Range hood capable of distributing air volume

Technical Field

The utility model relates to a kitchen appliance technical field specifically indicates a range hood that can carry out amount of wind distribution.

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.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, thereby provide one kind can adjust the range hood that can carry out amount of wind distribution that improves the range hood effect to the size of unilateral air intake as required.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a can carry out range hood of amount of wind distribution, includes the casing, the casing lower part has the smoke inlet chamber of vertical extension, it has the mouth that advances that is linked together with this smoke inlet chamber to open on the preceding lateral wall of casing lower part, its characterized in that: the cigarette inlet is provided with a left part and a right part which are arranged side by side in the transverse direction, and the cigarette inlet is provided with an adjusting structure which can adjust the opening degree of the left part and the right part.

In the above scheme, adjust the structure including first baffle, second baffle at least, this first baffle, second baffle correspond respectively and advance the left part and the right part arrangement of mouth and its lower limb rotates respectively to connect in the lower limb department of mouth, form the air intake that can carry out the aperture and adjust because of the baffle rotates between first baffle upper edge, second baffle upper edge and the corresponding mouth upper edge of advancing. The air inlet aperture of its top is adjusted through the upset of first baffle, second baffle, can distribute the fan amount of wind that left part and right part correspond to adjust the amount of wind of corresponding furnace end department according to the furnace end in service behavior, avoid running the cigarette, improve the oil absorption cigarette effect.

The utility model discloses a casing lower part has the smoke inlet chamber of vertical extension, casing upper portion has the collection smoke chamber that is linked together with smoke inlet chamber, and this collection smoke chamber extends forward and forms the installation cavity that is used for installing fan system, smoke inlet opens on the preceding lateral wall of this smoke inlet chamber lower part. And 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 of the utility model can be matched with each other to realize the air volume distribution of the left air inlet and the right air inlet, and can also guide the oil smoke upwards in the using state of the corresponding air inlets; due to the vertical arrangement of the smoke inlet cavity, the structure can prevent the oil smoke from diffusing in the bottom area of the smoke inlet cavity after the oil smoke enters the smoke inlet cavity, thereby reducing the travel of the oil smoke at the bottom of the smoke inlet cavity and directly discharging the oil smoke 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.

The utility model discloses in, thereby adjust the structure still including the actuating mechanism that can drive upset around first baffle and/or the second baffle and adjust left part and/or right part air intake size.

As a first implementation scheme of the driving mechanism, the driving mechanism includes an elastic component, a swinging component and a driving component, the elastic component makes the first baffle and the second baffle always keep a tendency of backward turning, the swinging component can be rotatably arranged at the rear sides of the first baffle and the second baffle, a first shifting arm and a second shifting arm which can abut against the rear side walls of the first baffle and the second baffle along with the rotation of the swinging component so as to push the swinging component to turn forward by overcoming the elastic force of the elastic component are arranged on the peripheral wall of the swinging component, and the driving component is used for driving the swinging component 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 above scheme, the driving mechanism further includes a limiting member disposed beside the swinging member and used for limiting a rotation angle of the swinging member, the limiting member is disposed close to the first toggle arm, when the swinging member rotates to a state where the first toggle arm pushes the first baffle to turn forward to a maximum angle, the first toggle arm abuts against a first edge of the limiting member, and the second toggle arm is separated from the second baffle so as to turn the second baffle backward 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.

Preferably, the edge of the first baffle plate, which is close to the middle of the smoke inlet, is provided with a first baffle plate extending backwards, and the first baffle plate is provided with a first yielding port through which the rotating shaft passes; 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. The bottom wall of the smoke inlet cavity is provided with 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.

As a second embodiment of the driving mechanism, the driving mechanism comprises an elastic member, a first swinging member, a second swinging member, a first driving member and a second driving member, the elastic piece enables the first baffle plate and the second baffle plate to always keep the tendency of backward turning, the first swinging piece and the second swinging piece are respectively and rotatably arranged at the rear sides of the first baffle plate and the second baffle plate, a first shifting arm which can abut against the rear side wall of the first baffle plate along with the rotation of the first swinging piece so as to push the first swinging piece to overcome the elastic force of the elastic piece to turn forwards is arranged on the peripheral wall of the first swinging piece, a second shifting arm which can abut against the rear side wall of the second baffle plate along with the rotation of the swinging piece so as to push the second shifting arm to overcome the elastic force of the elastic piece to turn forwards is arranged on the peripheral wall of the second swinging piece, the first driving piece is used for driving the first swinging piece to rotate, and the second driving piece is used for driving the second swinging piece to rotate.

Preferably, the first swinging member has a first rotating shaft arranged parallel to the first shutter, and the first toggle arm extends in a radial direction of the first rotating shaft; the second swinging member has a second rotating shaft arranged in parallel with the second shutter, and the second paddle arm extends in a radial direction of the second rotating shaft.

As actuating mechanism's third kind implementation scheme, actuating mechanism includes swing piece, first extensible member, second extensible member and driving piece, swing piece can locate first baffle, second baffle rear side with rotating, the first end of first extensible member rotates with swing piece to be connected, the second end rotates with first baffle to be connected, first extensible member is the shrink trend and can stretch under the stress condition, the first end of second extensible member rotates with swing piece to be connected, the second end rotates with the second baffle to be connected, the second extensible member is the shrink trend and can stretch under the stress condition, the driving piece is used for driving swing piece and rotates.

Preferably, the swinging member has a first swinging arm and a second swinging arm extending along the radial direction, respectively, the first swinging arm and the second swinging arm are arranged at an obtuse angle, the first end of the first telescopic member is rotatably connected with the first swinging arm, and the first end of the second telescopic member is rotatably connected with the second swinging arm.

Preferably, the first and second telescopic elements are of the same structure and each have a spring which keeps them in a contracting tendency. The first telescopic piece/the second telescopic piece comprises a sleeve, an inner column and the spring, wherein a first hinge part is arranged at the first end of the sleeve, an opening for the inner column to pass through is arranged at the second end of the sleeve, the inner column can be arranged in the sleeve in an axially telescopic mode along the sleeve, the first end of the inner column is restrained on the sleeve, and a second hinge part is arranged at the second end of the inner column. The structure is convenient for being matched with the swinging piece to drive the first baffle and the second baffle to turn back and forth.

Preferably, the first end of the inner column has a first retaining ring arranged along the circumferential direction, and correspondingly, the opening of the second end of the sleeve has a second retaining ring capable of abutting against the first retaining ring so as to prevent the inner column from being separated from the sleeve. Preferably, the spring is arranged in the sleeve and sleeved on the periphery of the inner column, a first end of the spring abuts against the first retaining ring, and a second end of the spring abuts against the second retaining ring. To improve assembly stability.

Preferably, the driving part is a motor, an output shaft of the motor is connected with the swinging part, and a position switch capable of controlling the motor to operate or not when the first baffle and the second baffle are turned backwards to the maximum opening of the air inlet is arranged on the rear wall of the smoke inlet cavity. The position switches are arranged in a mode that the two position switches respectively correspond to the first baffle and the second baffle, and when the first baffle and/or the second baffle are turned backwards to the maximum angle, the first baffle and/or the second baffle are/is abutted against the corresponding position switches, so that signals are sent out, and the corresponding motors stop running.

As a fourth embodiment of the driving mechanism, the driving mechanism includes an elastic member, a wheel disc, a first push rod, a second push rod and a driving member, the elastic member keeps the first baffle and the second baffle to be always in a tendency of turning backwards, the wheel disc can be rotatably arranged at the rear side of the first baffle and the second baffle, the first end of the first push rod is rotatably connected to the wheel disc, the second end of the first push rod is rotatably connected to the first baffle, the first end of the second push rod is rotatably connected to the wheel disc, the second end of the second push rod is rotatably connected to the second baffle, and the driving member is used for driving the wheel disc to rotate.

Preferably, the wheel disc is provided with a first sliding groove and a second sliding groove which extend along the circumferential direction, the first sliding groove and the second sliding groove are close to each other and are arranged in a staggered manner, the first end of the first push rod can be constrained in the first sliding groove in a reciprocating sliding manner, and the first end of the second push rod can be constrained in the second sliding groove in a reciprocating sliding manner. Preferably, the first sliding groove and the second sliding groove are both arc-shaped, and the corresponding central angles of the first sliding groove and the second sliding groove are 45-85 degrees. By adopting the structure, the first push rod and the second push rod are allowed to slide in the circumferential direction of the wheel disc, so that the rotation angles of the first baffle and the second baffle are controlled.

In the scheme, when the first baffle and the second baffle are both turned backwards to the maximum angle, the first end of the first push rod is positioned at the end part of the first sliding chute, which is far away from the second sliding chute, and the first end of the second push rod is positioned at the end part of the second sliding chute, which is far away from the first sliding chute; when the first baffle plate is turned forwards to the maximum angle and the second baffle plate is turned backwards to the maximum angle, the first end of the first push rod is positioned at the end part of the first sliding groove, which is far away from the second sliding groove, and the first end of the second push rod is positioned at the end part of the second sliding groove, which is close to the first sliding groove; under the state that the first baffle is turned backwards to the maximum angle and the second baffle is turned forwards to the maximum angle, the first end of the first push rod is positioned at the end part, close to the second sliding groove, of the first sliding groove, and the first end of the second push rod is positioned at the end part, away from the first sliding groove, of the second sliding groove. By adopting the matching mode, the reasonable distribution of the air quantity of the side fan used by the corresponding furnace end in different using states of the furnace end can be realized, so that the oil smoke absorption effect is improved.

Preferably, the wheel disc comprises a shaft positioned at the center, and a first disc and a second disc which are arranged on the shaft at intervals, the first disc and the second disc rotate along with the shaft synchronously, the first chute is arranged on the first disc, and the second chute is arranged on the second disc. The structure is convenient for production and assembly.

Compared with the prior art, the utility model has the advantages of: the utility model discloses the regulation structure that can adjust the aperture size of advancing mouth left part and right part has been set up in the mouth of advancing cigarette, should adjust the structure including the first baffle that can overturn around, the second baffle, when needs use the unilateral furnace end, the above-mentioned first baffle of accessible, the upset of second baffle makes into mouth one side aperture increase, the opposite side aperture reduces or closes, when needs use two side furnace ends, can all open greatly into mouth both sides aperture, thereby carry out rational distribution to the amount of wind as required, avoid running the cigarette, improve the oil absorption cigarette effect.

Drawings

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

fig. 2 is a schematic structural view of embodiment 1 of the present invention (the opening of the left and right air inlets are in the maximum state);

fig. 3 is a cross-sectional view of embodiment 1 of the present invention (the left and right air inlets have different opening degrees);

fig. 4 is a schematic partial structure view (left closed and right open state) of the adjusting structure in embodiment 1 of the present invention;

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

fig. 6 is a schematic structural view of a driving mechanism in embodiment 1 of the present invention (left closed and right open states);

fig. 7 is a schematic structural view of a swinging member in embodiment 1 of the present invention;

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

fig. 9 is a schematic structural view of a driving mechanism in embodiment 1 of the present invention (left open and right open state);

fig. 10 is a schematic structural view of a driving mechanism in embodiment 1 of the present invention (left open and right closed states);

fig. 11 is a schematic view of a partial structure of an adjusting structure in embodiment 2 of the present invention (both the left and right air inlet openings are in the maximum state);

fig. 12 is a schematic structural view of a driving mechanism in embodiment 2 of the present invention (left open and right open state);

fig. 13 is a schematic structural view of a driving mechanism in embodiment 2 of the present invention (left closed and right open states);

fig. 14 is a schematic structural view of a driving mechanism in embodiment 2 of the present invention (left open and right closed states);

fig. 15 is a schematic structural view of a swinging member in embodiment 2 of the present invention;

fig. 16 is a cross-sectional view of embodiment 3 of the present invention (both the left and right air inlet openings are in the maximum state);

fig. 17 is a schematic view of a partial structure of an adjusting structure in embodiment 3 of the present invention (the opening of the left and right air inlets is in a maximum state);

fig. 18 is a partial schematic structural view of an adjusting structure in embodiment 3 of the present invention (left open and right closed states);

fig. 19 is a partial schematic structural view of an adjusting structure in embodiment 3 of the present invention (left closed and right open states);

fig. 20 is a partial schematic structural view of an adjusting structure in embodiment 3 of the present invention (left open and right open states);

fig. 21 is a schematic structural view of the first/second extensible member according to embodiment 3 of the present invention;

FIG. 22 is a cross-sectional view of FIG. 21;

fig. 23 is a schematic structural view of a swinging member in embodiment 3 of the present invention;

FIG. 24 is a side view of FIG. 23;

fig. 25 is a cross-sectional view of embodiment 4 of the present invention (the left and right air inlets have different opening degrees);

fig. 26 is a schematic view of a partial structure of an adjusting structure in embodiment 4 of the present invention (the left and right air inlets have different opening degrees);

fig. 27 is a partial schematic structural view (left open and right closed states) of an adjusting structure in embodiment 4 of the present invention;

fig. 28 is a partial schematic structural view of an adjustment structure in embodiment 4 of the present invention (left closed and right open states);

fig. 29 is a partial schematic structural view of an adjusting structure in embodiment 4 of the present invention (left open and right open states);

fig. 30 is a side view of a wheel disc according to embodiment 4 of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example 1:

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 side burner is used alone but the left side burner is 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 be driven to turn forwards until the first baffle plate is turned to the maximum angle, the air inlet 110 of the left part 11a is closed approximately, at the moment, 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 backwards under the action of the elastic member 231 of the second baffle plate, 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 the convenience of description, the above-mentioned regulation process of this embodiment has shown left side and opened right side and close, left side and closed right side, left side and opened right side open state, but the utility model discloses an adjust the structure, should still be able to realize the half-open state of any side air intake as required, and be not limited to full open or full closed state. For example, the utility model discloses can make first baffle overturn to the maximum angle state forward under, leave the gap about 20mm between first baffle upper edge and the mouth of advancing the cigarette higher authority, like this, overturn to the maximum angle state backward at the second baffle under, the main amount of wind of fan is concentrated in the air intake department that the second baffle corresponds, but the fan amount of wind that first baffle department corresponds also can satisfy the suction demand of steam such as steaming dish, boiling hot water or other little oil smoke to provide bigger facility for the consumer.

Example 2:

this example differs from example 1 in that: the embodiment adopts double-motor driving, and correspondingly, the swing piece is arranged in a single-shifting-arm structure.

Specifically, as shown in fig. 11 to 15, the two swinging members 231a of the present embodiment are not linked, a limiting member 234a is respectively disposed beside the two swinging members 231a, and both the limiting members 234a are located at the top of the adjusting structure 2a and are used for limiting the turning position of the corresponding shifting arm 2311a when the rotating shaft 2312a rotates, so as to limit the first blocking plate 21a and the second blocking plate 22a when they are turned forward from the maximum angle state.

Example 3:

the present embodiment is different from embodiments 1 and 2 in that: the drive mechanism is different in structure.

Specifically, as shown in fig. 16 to 24, the driving mechanism 23b of the present embodiment includes a swinging member 23b ', a driving member 24b, and a telescopic structure 25b, where the telescopic structure 25b includes a first telescopic member 251b and a second telescopic member 252b, the swinging member 23b ' is rotatably disposed at the rear side of the first baffle 21b and the second baffle 22b, a first end of the first telescopic member 251b is rotatably connected to the swinging member 23b ', a second end of the first telescopic member 251b is rotatably connected to the first baffle 21b, the first telescopic member 251b is in a contracting trend and can be stretched in a stressed state, a first end of the second telescopic member 252b is rotatably connected to the swinging member 23b ', a second end of the second telescopic member 252b is rotatably connected to the second baffle 22b, the second telescopic member 252b is in a contracting trend and can be stretched in a stressed state, and the driving member 24b is used for driving the swinging member 23b ' to rotate. With the above configuration, the first baffle 21b and the second baffle 22b are reversed back and forth, and the air flow distribution between the left portion 11a and the right portion 11b is realized.

The swinging member 23b 'has a rotating shaft 231b arranged parallel to the first and second shutters 21b and 22b and first and second swinging arms 232b and 233b extending radially on the rotating shaft 231b, respectively, and the first and second swinging arms 232b and 233b are arranged at an obtuse angle a' of 120 ° to 160 °, preferably 135 ° to 145 °. The first end of the first telescopic member 251b is rotatably connected to the first swing arm 232b, and the first end of the second telescopic member 252b is rotatably connected to the second swing arm 233 b. The first swing arm 232b and the second swing arm 233b at a specific angle can cooperate with the first telescopic member 251b and the second telescopic member 252b to control the rotation angles of the first baffle 21b and the second baffle 22 b.

The first expansion member 251b and the second expansion member 252b of the present embodiment are identical in structure and have springs 250 for keeping the expansion tendency. Specifically, the first expansion element 251 b/the second expansion element 252b includes a sleeve 2511, an inner column 2512 and a spring 250, the first end of the sleeve 2511 has a first hinge 2511a for pivotal connection of the shutter, the second end has an opening 2511b for the inner column 2512 to pass through, the inner column 2512 can be axially extended and retracted along the sleeve 2511 and is disposed in the sleeve 2511, the first end is constrained on the sleeve 2511, and the second end has a second hinge 2512a for pivotal connection with the swing arm. The above structure is convenient for cooperating with the swinging piece 23b' to drive the first baffle plate 21b and the second baffle plate 22b to turn back and forth. The first end of the inner column 2512 has a first retaining ring 2512b arranged circumferentially and correspondingly, the opening 2511b at the second end of the sleeve 2511 has a second retaining ring 2511c which can abut against the first retaining ring 2512b to prevent the inner column 2512 from disengaging from the sleeve 2511. The spring 250 is disposed in the sleeve 2511 and is sleeved on the outer periphery of the inner column 2512, and a first end of the spring 250 abuts against the first retaining ring 2512b and a second end abuts against the second retaining ring 2511 c.

The driving member 24b is a motor capable of rotating in forward and reverse directions, an output shaft of the motor is connected to the rotating shaft 231b of the swinging member 23b', and a position switch 3b capable of controlling whether the motor operates or not in a state that the first baffle 21b and the second baffle 22b are turned backwards to the maximum opening degree of the air inlet 110 is arranged on the rear wall of the smoke inlet chamber 11 b. The two position switches 3b are respectively arranged corresponding to the first baffle plate 21b and the second baffle plate 22b, and when the first baffle plate 21b and/or the second baffle plate 22b are/is turned backwards to the maximum angle, the first baffle plate 21b and/or the second baffle plate 22b are/is abutted against the corresponding position switch 3b, so that a signal is sent out, and the corresponding motor stops running.

When the range hood of the present embodiment is used, and the left burner is used alone, but the right burner is not used, as shown in fig. 18, the motor rotates to drive the swinging member 23b' to rotate, so that the first swinging arm 232b extends towards the rear upper side, and the second swinging arm 233b extends towards the front, at this time, the first telescopic member 251b is in a stretching state and pulls the first baffle 21b backwards to enable the first baffle 21b to turn backwards to the maximum angle, the second telescopic member 252b is in a compressing state and pushes the second baffle 22b to turn forwards to the maximum angle, so that the opening degree of the air inlet of the left portion 11a is maximum, and the air inlet of the right portion 11b is closed; the top edge of the first baffle 21b abuts against the corresponding position switch 3b, so that the motor stops running;

when the right burner is used alone but not used, as shown in fig. 19, the motor rotates to drive the swinging member 23b' to reversely rotate, so that the first swinging arm 232b extends forwards and upwards, the second swinging arm 233b extends backwards and downwards, at this time, the second telescopic member 252b is in a stretching state and pulls the second baffle 22b backwards to enable the second baffle 22b to be turned backwards to a maximum angle, the first telescopic member 251b is in a compressing state and pushes the first baffle 21b to be turned forwards to a maximum angle, and thus the opening degree of the air inlet of the right part 11b is maximized and the air inlet of the left part 11a is closed; the top edge of the second baffle 22b abuts against the corresponding position switch 3b, so that the motor stops running;

when the double burner is needed to be used simultaneously, as shown in fig. 20, the motor rotates to drive the swinging member 23b' to rotate, so that the first swinging arm 232b extends upwards, the second swinging arm 233b extends downwards, at this time, the second telescopic member 252b is in a compressed state, and pulls the second baffle 22b backwards by the force of the spring, so that the second baffle 22b is turned backwards to the maximum angle, and the first telescopic member 251b is also in a compressed state, pulls the first baffle 21b backwards by the force of the spring, so that the first baffle 21b is turned backwards to the maximum angle; the top edges of the first baffle 21b and the second baffle 22b respectively abut against the corresponding position switches 3b, so that the motor stops running.

Example 4:

this example differs from examples 1, 2 and 3 in that: the drive mechanism is different in structure.

Specifically, as shown in fig. 25 to 30, the driving mechanism 23c of the present embodiment includes an elastic member 231c, a wheel disc 232c, a first push rod 233c, a second push rod 234c and a driving member 235c, wherein the elastic member 231c is a linear spring, and two linear springs are respectively disposed corresponding to the first baffle plate 21c and the second baffle plate 22c, so that the first baffle plate 21c and the second baffle plate 22c always keep a tendency of being turned backwards. The upper end of the linear spring is fixed to the rear side wall of the lower portion of the first shutter 21 c/second shutter 22c, and the lower end of the linear spring is fixed to the bottom of the casing 1c at a position on the rear side of the smoke inlet 111 c. The wheel disc 232c can be rotatably arranged at the rear side of the first baffle plate 21c and the second baffle plate 22c, the first end of the first push rod 233c is rotatably connected to the wheel disc 232c, the second end of the first push rod 233c is rotatably connected to the first baffle plate 21c, the first end of the second push rod 234c is rotatably connected to the wheel disc 232c, the second end of the second push rod 234c is rotatably connected to the second baffle plate 22c, and the driving part 235c is used for driving the wheel disc 232c to rotate.

Specifically, the wheel disc 232c is provided with a first sliding slot 2321c and a second sliding slot 2322c extending along the circumferential direction, the first sliding slot 2321c and the second sliding slot 2322c are close to each other and are arranged in a staggered manner, the first end of the first push rod 233c is constrained in the first sliding slot 2321c in a reciprocating sliding manner through the rotating shaft, and the first end of the second push rod 234c is constrained in the second sliding slot 2322c in a reciprocating sliding manner through the rotating shaft. The first sliding slot 2321c and the second sliding slot 2322c of the present embodiment are both arc-shaped, and the corresponding central angle a ″ is 50 ° to 85 °, and preferably 70 ° to 80 °. With the above configuration, the first push rod 233c and the second push rod 234c are allowed to slide in the circumferential direction of the disk 232c, thereby controlling the rotation angles of the first shutter 21c and the second shutter 22 c.

The wheel disc 232c of the present embodiment includes a shaft 2320 located at the center, and a first disc 232a and a second disc 232b ' arranged on the shaft 2320 at intervals, wherein the first disc 232a and the second disc 232b ' rotate synchronously with the shaft 2320, the first sliding slot 2321c is opened on the first disc 232a, and the second sliding slot 2322c is opened on the second disc 232b '. The first and second sliding grooves 2321c and 2322c are disposed adjacent to each other in the circumferential direction without an overlapping portion therebetween, as viewed from the side of the disk 232 c.

The driving member 235c of this embodiment is a motor capable of rotating forward and backward, an output shaft of the motor is connected to the shaft 2320 of the wheel disc 232c, and a position switch 3c capable of controlling the operation of the motor when the first baffle 21c and the second baffle 22c are turned backward to the maximum opening of the air inlet 110 is disposed on the rear wall of the smoke inlet cavity 11 c. The two position switches 3c are respectively arranged corresponding to the first baffle plate 21c and the second baffle plate 22c, and when the first baffle plate 21c and/or the second baffle plate 22c are/is overturned backwards to the maximum angle, the first baffle plate 21c and/or the second baffle plate 22c are/is abutted against the corresponding position switch 3c, so that a signal is sent out, and the corresponding motor stops running.

When the range hood of the present embodiment is used, when the left side burner is used alone, but the right side burner is not used, as shown in fig. 27, the motor rotates to drive the wheel disc 232c to rotate, so that the first sliding groove 2321c is located at the rear side of the top of the wheel disc 232c, the second sliding groove 2322c is located at the front side of the top of the wheel disc 232c, the first end of the first push rod 233c is located at the end (front end) of the first sliding groove 2321 close to the second sliding groove 2322c, the elastic member 231c pulls the first baffle 21c backward so that the first baffle 21c is turned backward until the opening of the air inlet of the left portion 11a reaches the maximum, the first end of the second push rod 234c is located at the end (front end) of the second sliding groove 2322c away from the first sliding groove 2321c, and the second end of the second push rod 234c pushes the second baffle 22c to turn forward until the air inlet of; the top edge of the first baffle 21c abuts against the corresponding position switch 3c, so that the motor stops running;

when the right burner is used alone but not the left burner, as shown in fig. 28, the motor rotates to drive the wheel disc 232c to rotate, so that the first sliding slot 2321c is located at the front side of the wheel disc 232c, the second sliding slot 2322c is located below the front side of the wheel disc 232c, the first end of the first push rod 233c is located at the end (upper end) of the first sliding slot 2321c away from the second sliding slot 2322c, the second end of the first push rod 233c pushes the first baffle 21c to turn forward until the air inlet of the left portion 11a is closed, the first end of the second push rod 234c is located at the end (upper end) of the second sliding slot 2322c close to the first sliding slot 2321c, and the elastic member 231c pulls the second baffle 22c backward to turn the second baffle 22c backward until the opening of the air inlet of the right portion 11b reaches the maximum; the top edge of the second baffle 22c abuts against the corresponding position switch 3, so that the motor stops running;

when the double burner is needed to be used simultaneously, as shown in fig. 29, the motor rotates to drive the wheel disc 232c to rotate, so that the first sliding groove 2321c is located on the front side of the top of the wheel disc 232c, the second sliding groove 2322c is located on the front lower side of the wheel disc 232c, the first end of the first push rod 233c is located at the end (rear end) of the first sliding groove 2321c away from the second sliding groove 2322c, the first end of the second push rod 234c is located at the end (lower end) of the second sliding groove 2322c away from the first sliding groove 2321c, and the elastic member 231c respectively pulls the corresponding first baffle 21c and the second baffle 22c backwards, so that the first baffle 21c and the second baffle 22c are turned backwards until the opening degrees of the air inlets of the left portion 11a and the right portion 11b reach the maximum; the top edges of the first baffle 21c and the second baffle 22c abut against the corresponding position switches 3c, so that the motor stops running.

Claims (28)

1. The utility model provides a can carry out range hood of amount of wind distribution, includes casing (1), casing (1) lower part has vertical extension to advance smoke chamber (11), it has into mouth (111) that is linked together with this smoke chamber (11) to open on the preceding lateral wall of casing (1) lower part, its characterized in that: the smoke inlet (111) is provided with a left part (11a) and a right part (11b) which are arranged side by side in the transverse direction, and an adjusting structure capable of adjusting the opening degree of the left part (11a) and the right part (11b) is arranged at the smoke inlet (111).

2. The range hood capable of distributing air volume according to claim 1, wherein: the adjusting structure (2, 2a, 2b, 2c) at least comprises a first baffle plate (21, 21a, 21b, 21c) and a second baffle plate (22, 22a, 22b, 22c), the first baffle plate (21, 21a, 21b, 21c) and the second baffle plate (22, 22a, 22b, 22c) are respectively arranged corresponding to the left part (11a) and the right part (11b) of the smoke inlet (111), the lower edges of the first baffle plate and the second baffle plate are respectively and rotatably connected with the lower edge of the smoke inlet (111), 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, 21a, 21b, 21c), the upper edge of the second baffle plate (22, 22a, 22b, 22c) and the upper edge of the corresponding smoke inlet (111).

3. The range hood capable of distributing air volume according to claim 2, wherein: in the open state of the air inlet (110), the first baffle (21, 21a, 21b, 21 c)/the second baffle (22, 22a, 22b, 22c) forms a flow guide plate which is gradually inclined from bottom to top and from front to back.

4. The range hood capable of distributing air volume according to claim 2, wherein: the adjusting structure (2, 2a, 2b, 2c) further comprises a driving mechanism (23, 23a, 23b, 23c) which can drive the first baffle (21, 21a, 21b, 21c) and/or the second baffle (22, 22a, 22b, 22c) to turn back and forth so as to adjust the size of the air inlet (110) of the left part (11a) and/or the right part (11 b).

5. The range hood capable of distributing air volume according to claim 4, wherein: actuating mechanism (23) are including elastic component, swinging member (232) and driving piece, the elastic component makes first baffle (21), second baffle (22) remain the trend of upset backward all the time, swinging member (232) can locate first baffle (21), second baffle (22) rear side with rotating, thereby be provided with on the periphery wall of swinging member (232) and lean on first group arm (2321), the second group arm (2322) that lean on the back lateral wall of first baffle (21), second baffle (22) and overcome the elastic component elasticity and overturn forward along rotating along with swinging member (232), the driving piece is used for driving swinging member (232) and rotates.

6. The range hood capable of distributing air volume according to claim 5, 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).

7. The range hood capable of distributing air volume according to claim 6, 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).

8. The range hood capable of distributing air volume according to claim 7, wherein: an included angle of 100 degrees is formed between the first shifting arm (2321) and the second shifting arm (2322).

9. The range hood capable of distributing air volume according to claim 6, 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).

10. The range hood capable of distributing air volume according to claim 6, 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.

11. The range hood capable of distributing air volume according to claim 10, wherein: the driving mechanism (23) further comprises a support (25) for supporting the swinging piece (232), the support (25) is constrained in the smoke inlet cavity (11) and is provided with a supporting arm (251) 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 supporting arm (251), the driving piece is arranged at the side of the support (25), and an output shaft is connected with the rotating shaft (2323).

12. The range hood capable of distributing air volume according to claim 11, 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 a second yielding opening (2211) for the rotating shaft (2323) to pass through is formed in the second baffle (221).

13. The range hood capable of distributing air volume according to claim 12, wherein: the bottom wall of the smoke inlet cavity (11) 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 (211) and the second baffle plates (221) are arranged close to the rear side wall of the smoke inlet cavity (11) under the condition 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 (211) and the second baffle plates (221) are arranged close to the oil guide plate (112).

14. The range hood capable of distributing air volume according to claim 13, wherein: the middle part of the oil guide plate (112) is provided with a concave assembly plate (113), and the bottom of the bracket (25) is fixed on the assembly plate (113).

15. The range hood capable of distributing air volume according to claim 4, wherein: the driving mechanism (23a) comprises an elastic piece, a first swinging piece, a second swinging piece, a first driving piece and a second driving piece, the elastic piece enables the first baffle plate (21a) and the second baffle plate (22a) to always keep the tendency of backward overturning, the first swinging piece and the second swinging piece are respectively arranged at the rear sides of the first baffle plate (21a) and the second baffle plate (22a) in a rotatable manner, a first shifting arm which can abut against the rear side wall of the first baffle plate (21a) along with the rotation of the first swinging piece so as to push the first swinging piece to overturn forwards by overcoming the elastic force of the elastic piece is arranged on the peripheral wall of the first swinging piece, a second shifting arm which can abut against the rear side wall of the second baffle plate (22a) along with the rotation of the swinging piece so as to push the second swinging piece to overturn forwards by overcoming the elastic force of the elastic piece is arranged on the peripheral wall of the second swinging piece, and the first driving piece is used for driving the first swinging piece, the second driving piece is used for driving the second swinging piece to rotate.

16. The range hood capable of distributing air volume according to claim 15, wherein: the first swinging member has a first rotating shaft arranged in parallel with the first shutter (21a), and the first toggle arm extends in a radial direction of the first rotating shaft; the second swinging member has a second rotation shaft arranged in parallel with a second shutter (22a), and the second pick arm extends in a radial direction of the second rotation shaft.

17. The range hood capable of distributing air volume according to claim 4, wherein: the driving mechanism (23b) comprises a swinging piece (23b '), a first telescopic piece (251b), a second telescopic piece (252b) and a driving piece, the swinging piece (23b ') can be rotatably arranged at the rear sides of the first baffle (21b) and the second baffle (22b), the first end of the first telescopic piece (251b) is rotatably connected with the swinging piece (23b '), the second end of the first telescopic piece is rotatably connected with the first baffle (21b), the first telescopic piece (251b) is in a contraction trend and can be stretched in a stressed state, the first end of the second telescopic piece (252b) is rotatably connected with the swinging piece (23b '), the second end of the second telescopic piece is rotatably connected with the second baffle (22b), the second telescopic piece (252b) is in a contraction trend and can be stretched in a stressed state, and the driving piece is used for driving the swinging piece (23b ') to rotate.

18. The range hood capable of distributing air volume according to claim 17, wherein: the swinging piece (23 b') is provided with a first swinging arm (232b) and a second swinging arm (233b) which extend along the radial direction respectively, the first swinging arm (232b) and the second swinging arm (233b) are arranged in an obtuse angle, the first end of the first telescopic piece (251b) is rotatably connected with the first swinging arm (232b), and the first end of the second telescopic piece (252b) is rotatably connected with the second swinging arm (233 b).

19. The range hood capable of distributing air volume according to claim 17, wherein: the first telescopic part (251b) and the second telescopic part (252b) are the same in structure and are provided with springs (250) which can keep the first telescopic part and the second telescopic part in a contraction trend.

20. The range hood capable of distributing air volume according to claim 19, wherein: the first telescopic piece (251 b)/the second telescopic piece (252b) comprises a sleeve (2511), an inner column (2512) and the spring (250), wherein the first end of the sleeve (2511) is provided with a first hinge part (2511a), the second end of the sleeve is provided with an opening (2511b) for the inner column (2512) to pass through, the inner column (2512) can be arranged in the sleeve (2511) in an axially telescopic mode along the sleeve (2511), the first end of the inner column is restrained on the sleeve (2511), and the second end of the inner column is provided with a second hinge part (2512 a).

21. The range hood capable of distributing air volume according to claim 20, wherein: the first end of the inner column (2512) is provided with a first retaining ring (2512b) arranged along the circumferential direction, and correspondingly, the opening (2511b) of the second end of the sleeve (2511) is provided with a second retaining ring (2511c) which can be abutted against the first retaining ring (2512b) so as to prevent the inner column from being separated from the sleeve (2511).

22. The range hood capable of distributing air volume according to claim 21, wherein: the spring (250) is arranged in the sleeve (2511) and sleeved on the periphery of the inner column (2512), the first end of the spring (250) abuts against the first retaining ring (2512b), and the second end of the spring abuts against the second retaining ring (2511 c).

23. The range hood capable of distributing air volume according to claim 17, wherein: the driving piece is a motor, an output shaft of the motor is connected with the swinging piece (23 b'), and a position switch (3b) capable of controlling the motor to run or not when the first baffle plate (21b) and the second baffle plate (22b) are turned backwards to the maximum opening degree of the air inlet (110) is arranged on the rear wall of the smoke inlet cavity (11).

24. The range hood capable of distributing air volume according to claim 4, wherein: the driving mechanism (23c) comprises an elastic piece, a wheel disc (232c), a first push rod (233c), a second push rod (234c) and a driving piece, wherein the elastic piece enables the first baffle plate (21c) and the second baffle plate (22c) to always keep a backward overturning trend, the wheel disc (232c) can be rotatably arranged on the rear side of the first baffle plate (21c) and the rear side of the second baffle plate (22c), the first end of the first push rod (233c) is rotatably connected to the wheel disc (232c), the second end of the first push rod (233c) is rotatably connected to the first baffle plate (21c), the first end of the second push rod (234c) is rotatably connected to the wheel disc (232c), the second end of the second push rod is rotatably connected to the second baffle plate (22c), and the driving piece is used for driving the wheel disc (232c) to rotate.

25. The range hood capable of distributing air volume according to claim 24, wherein: the wheel disc (232c) is provided with a first sliding groove (2321c) and a second sliding groove (2322c) which extend along the circumferential direction, the first sliding groove (2321c) and the second sliding groove (2322c) are close to each other and are arranged in a staggered mode, the first end of the first push rod (233c) is constrained in the first sliding groove (2321c) in a reciprocating sliding mode, and the first end of the second push rod (234c) is constrained in the second sliding groove (2322c) in a reciprocating sliding mode.

26. The range hood capable of distributing air volume according to claim 25, wherein: the first sliding groove (2321c) and the second sliding groove (2322c) are both arc-shaped, and the corresponding central angle (a') is 45-80 degrees.

27. The range hood capable of distributing air volume according to claim 26, wherein: when the first baffle plate (21c) and the second baffle plate (22c) are turned backwards to the maximum angle, the first end of the first push rod (233c) is located at the end of the first sliding groove (2321c) away from the second sliding groove (2322c), and the first end of the second push rod (234c) is located at the end of the second sliding groove (2322c) away from the first sliding groove (2321 c); under the state that the first baffle plate (21c) is turned forwards to the maximum angle and the second baffle plate (22c) is turned backwards to the maximum angle, the first end of the first push rod (233c) is positioned at the end part of the first sliding groove (2321c) which is far away from the second sliding groove (2322c), and the first end of the second push rod (234c) is positioned at the end part of the second sliding groove (2322c) which is close to the first sliding groove (2321 c); under the state that the first baffle plate (21c) is turned backwards to the maximum angle and the second baffle plate (22c) is turned forwards to the maximum angle, the first end of the first push rod is located at the end part, close to the second sliding groove, of the first sliding groove, and the first end of the second push rod is located at the end part, away from the first sliding groove (2321c), of the second sliding groove (2322 c).

28. The range hood capable of distributing air volume according to claim 25, wherein: the wheel disc (232c) comprises a shaft (2320) located at the center, and a first disc (232a) and a second disc (232b ') which are arranged on the shaft (2320) at intervals, the first disc (232a) and the second disc (232b ') rotate synchronously along with the shaft, the first sliding groove (2321c) is formed in the first disc (232a), and the second sliding groove (2322c) is formed in the second disc (232b ').

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