CN221278119U

CN221278119U - Fan structure of range hood and range hood

Info

Publication number: CN221278119U
Application number: CN202322688728.5U
Authority: CN
Inventors: 李永波; 梁之博; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2024-07-05
Anticipated expiration: 2033-10-08

Abstract

The utility model discloses a fan structure of a range hood and the range hood. The fan structure of the range hood comprises an air box, an air cavity is arranged in the air box, and an air inlet and an air outlet are formed in the air box; the wind wheel assembly is arranged in the wind cavity and used for forming negative pressure in the wind cavity; the oil filtering assembly is installed in the air cavity and can rotate relative to the air box so as to filter oil stains in smoke entering the air cavity from the air inlet. According to the fan structure of the range hood, the oil filtering component is arranged in the air box and can rotate relative to the air box so as to filter the greasy dirt in the smoke entering the air box from the air inlet, so that the filtration of the oily dirt in the fan structure is realized, the accumulation of the greasy dirt in the air box is greatly reduced, and the influence of the greasy dirt on the performance of the fan is reduced.

Description

Fan structure of range hood and range hood

Technical Field

The utility model relates to the technical field of kitchen electricity, in particular to a fan structure of a range hood and the range hood.

Background

A range hood, which is a kitchen appliance that sucks and discharges oil smoke through a centrifugal fan and filters part of grease particles using a filter screen, has become an indispensable kitchen tool in modern home cooking. When the impeller of the fan rotates, negative pressure suction is generated at the center of the fan, and oil smoke below the range hood is sucked into the fan and is collected by the volute after being accelerated by the fan, and is guided to be discharged outdoors.

Although the range hood is generally provided with an oil filter screen in the fume collecting hood for filtering oil, the oil filtering strength is insufficient, and a large amount of oil smoke can still accumulate in the volute and the fan after the range hood is used for a long time, so that the structural performance of the fan is affected.

Therefore, a fan structure of a range hood is needed to solve the above problems.

Disclosure of utility model

The utility model aims to solve one of the problems in the prior art to at least a certain extent, and therefore, the utility model provides a fan structure of a range hood, an oil filtering component is arranged in a bellows, and the oil filtering component can rotate relative to the bellows so as to filter oil stains in smoke entering the bellows from an air inlet, thereby realizing the filtration of the oil stains in the fan structure, greatly reducing the accumulation of the oil stains in the bellows and reducing the influence of the oil stains on the performance of the fan.

The above object is achieved by the following technical scheme:

a fan structure of a range hood, comprising:

the air box is internally provided with an air cavity, and an air inlet and an air outlet are formed in the air box;

the wind wheel assembly is arranged in the wind cavity and used for forming negative pressure in the wind cavity;

The oil filtering assembly is installed in the air cavity and can rotate relative to the air box so as to filter oil stains in smoke entering the air cavity from the air inlet.

Optionally, the oil filtering component is arranged on one side close to the air inlet and above the air inlet, and the wind wheel component is arranged on one side close to the air outlet and communicated with the air outlet.

Optionally, the oil filter assembly comprises:

a drive structure mounted within the bellows;

And one end of the filter structure is in transmission connection with the driving structure, the other end of the filter structure is in rotary connection with the bellows, and the driving structure can drive the filter structure to rotate so as to filter greasy dirt in the flue gas.

Optionally, the filtering structure comprises:

The filtering body structure comprises a plurality of oil filtering rods, and the oil filtering rods are arranged at intervals and are enclosed to form a cylinder shape;

the first ends of the plurality of oil filtering rods are connected with the first connecting members, and the driving structure is in transmission connection with the first connecting members;

The second connecting members are connected with the second ends of the oil filtering rods, the second connecting members are rotationally connected with the bellows, and the first ends of the oil filtering rods are opposite to the second ends of the oil filtering rods.

Optionally, the rotating speed n of the filtering body structure is more than or equal to 60/pi t ₂;

Wherein, t ₂＝t₁,t₁＝D/V,V＝Q/S,t₂ is the time length required by one of two adjacent oil filtering rods to rotate to the other, t ₁ is the time length required by the flue gas to flow through the filtering body structure, D is the diameter of the oil filtering rod, V is the flue gas flowing speed, Q is the air quantity when the range hood operates, and S is the maximum area of the cross section of the oil filtering rod along the length direction.

Optionally, the oil filter rod includes:

a lever body;

A first connection structure provided at a first end of the lever body, the first connection structure being connected with the first connection member;

the second connecting structure is arranged at the second end of the rod body and is connected with the second connecting member, and the first end of the rod body and the second end of the rod body are oppositely arranged.

Optionally, the first connection structure includes a first adapting portion and a first inserting portion, which are connected perpendicularly to each other, the first adapting portion is perpendicular to the rod body, the first adapting portion extends towards the axial direction of the filter body structure, the first inserting portion is parallel to the rod body, and the first inserting portion extends towards the direction of the second connection member;

The first connecting member comprises a first connecting block and a second connecting block which are detachably connected, a first limit groove is formed in the periphery of the first connecting block, a second limit groove is formed in the periphery of the second connecting block, a first inserting hole is formed in the second connecting block, the first end of the rod body is clamped in the first limit groove and the second limit groove, a first connecting portion is located between the first connecting block and the second connecting block, the first inserting portion penetrates through the first inserting hole, the output end of the driving structure is in transmission connection with the first connecting block, and the driving structure can drive the first connecting block to rotate.

Optionally, the second connection structure includes a second adapting portion and a second inserting portion, which are connected perpendicularly to each other, the second adapting portion is perpendicular to the rod body, the second adapting portion extends towards the axial direction of the filter body structure, the second inserting portion is parallel to the rod body, and the second inserting portion extends towards the direction of the first connection member;

The second connecting member comprises a third connecting block and a fourth connecting block which are detachably connected, the third connecting block is rotationally connected with the bellows, a third limiting groove is formed in the periphery of the third connecting block, a fourth limiting groove is formed in the periphery of the fourth connecting block, a second inserting hole is formed in the fourth connecting block, the second end of the rod body is clamped in the third limiting groove and the fourth limiting groove, the second switching part is located between the third connecting block and the fourth connecting block, and the second inserting part penetrates through the second inserting hole.

Optionally, the oil filtering assembly further comprises a bearing connection structure, and the third connection block is rotationally connected with the bellows through the bearing connection structure.

Optionally, the filtering body structure further comprises a reinforcing member, and the reinforcing member is sleeved on the outer sides of the plurality of oil filtering rods.

Optionally, the air inlet is arranged at the bottom side of the air box, and the air outlet is arranged at the periphery side of the air box.

Optionally, the wind wheel assembly is located at an upper portion of the wind chamber, and the oil filter assembly is located at a lower portion of the wind chamber.

Optionally, the wind turbine further comprises a sound absorbing piece, the sound absorbing piece is arranged at the lower part of the wind box and is opposite to the oil filtering component, the oil filtering component is located at one side of the air suction opening of the wind wheel component, and the sound absorbing piece is located at the other side of the air suction opening.

Optionally, a guiding inclined plane is arranged on one side of the sound absorbing piece, which is close to the air suction inlet, and the guiding inclined plane is obliquely arranged from bottom to top in a direction away from the air suction inlet.

Another aspect of the utility model provides a range hood, comprising the fan structure.

Compared with the prior art, the utility model at least comprises the following beneficial effects:

The fan structure of the range hood provided by the utility model comprises an air box, a wind wheel assembly and an oil filtering assembly. An air cavity is arranged in the air box, and an air inlet and an air outlet are formed in the air box. The wind wheel component is arranged in the wind cavity and used for forming negative pressure in the wind cavity so as to suck the smoke into the wind cavity from the air inlet. The oil filtering component is arranged in the air box, and can rotate relative to the air box so as to filter oil stains in smoke entering the air box from the air inlet, thereby realizing the filtration of the oil stains in the fan structure, greatly reducing the accumulation of the oil stains in the air box and reducing the influence of the oil stains on the performance of the fan.

Drawings

Fig. 1 is a schematic perspective view of a fan structure of a range hood according to the present utility model;

fig. 2 is a schematic perspective view of a fan structure of the range hood with a lower cover removed;

Fig. 3 is a left side view of a blower structure of the range hood provided by the present utility model;

FIG. 4 is a cross-sectional view at A-A in FIG. 3;

Fig. 5 is an exploded view of an oil filter assembly of a blower structure of a range hood according to the present utility model;

fig. 6 is a top view of an oil filter assembly of a fan structure of the range hood provided by the utility model;

FIG. 7 is a cross-sectional view at B-B in FIG. 6;

Fig. 8 is a top view of a filter body structure of an oil filter assembly of a fan structure of a range hood provided by the present utility model;

FIG. 9 is a cross-sectional view at C-C of FIG. 8;

Fig. 10 is a schematic perspective view of an oil filter rod of an oil filter assembly of a fan structure of a range hood.

In the figure:

1. a wind box; 100. a wind chamber; 11. a lower cover; 12. an upper cover; 13. an air inlet;

2. a wind wheel assembly; 21. a wind wheel structure; 22. a volute;

3. An air outlet seat;

4. An oil filtering component; 41. a filtering body structure; 411. an oil filtering rod; 4111. a lever body; 4112. a first connection structure; 41121. a first transfer section; 41122. a first plug-in connection; 4113. a second connection structure; 41131. a second switching part; 41132. a second plug-in connection; 412. a reinforcing member; 42. a driving structure; 421. an output lever; 43. a first connecting member; 431. a first connection block; 4311. a first limit groove; 4312. a connection part; 432. a second connection block; 4321. a first plug hole; 4322. the second limit groove; 44. a bearing connection structure; 441. a bearing seat; 442. a bearing body; 443. a gasket; 45. a second connecting member; 451. a third connecting block; 4511. a third limit groove; 4512. a rotating shaft; 452. a fourth connecting block; 4521. a second plug hole; 4522. a fourth limit groove;

5. A sound absorbing member; 51. and a diversion inclined plane.

Detailed Description

The following examples illustrate the utility model, but the utility model is not limited to these examples. Modifications and equivalents of some of the technical features of the specific embodiments of the present utility model may be made without departing from the spirit of the present utility model, and they are all included in the scope of the claimed utility model.

Referring to fig. 1-10, the present utility model provides a fan structure of a range hood, which includes a bellows 1, a wind wheel assembly 2 and an oil filter assembly 4. An air cavity 100 is arranged in the air box 1, and an air inlet 13 and an air outlet are formed in the air box 1. The wind wheel assembly 2 is installed in the wind chamber 100, and is used for forming negative pressure in the wind chamber 100 so as to suck the smoke from the air inlet 13 into the wind chamber 100. The oil filtering component 4 is arranged in the air box 1, and the oil filtering component 4 can rotate relative to the air box 1 so as to filter oil stains in smoke entering the air box 1 from the air inlet 13, thereby realizing the filtration of the oil stains in the fan structure, greatly reducing the accumulation of the oil stains in the air box 1 and reducing the influence of the oil stains on the performance of the fan.

Optionally, the oil filtering component 4 is disposed on a side close to the air inlet 13 and above the air inlet 13 (including right above and obliquely above), so that when the flue gas just enters the air box 1 through the air inlet 13, the flue gas can be filtered by the oil filtering component 4 to avoid the oil dirt from entering the wind wheel component 2, and meanwhile, by disposing the oil filtering component 4 above the air inlet 13, the filtered oil dirt can directly drop into the fume collecting hood of the range hood through the air inlet 13 and then flow into the oil cup of the range hood through the fume collecting hood, or directly drop into the oil cup through the air inlet 13, so as to avoid most of the oil dirt from dropping into the air box 1. The wind wheel component 2 is arranged on one side close to the air outlet and communicated with the air outlet, so that the wind wheel component 2 is connected with the air outlet seat 3.

Specifically, the wind turbine assembly 2 includes a volute 22 and a wind turbine structure 21 disposed within the volute 22.

Further, the wind wheel structure 21 comprises a wind wheel body and a first motor in transmission connection with the wind wheel body, and the first motor extends out of the wind box 1 so as to facilitate heat dissipation of the first motor.

Optionally, the oil filter assembly 4 comprises a drive structure 42 and a filter structure. The drive structure 42 is mounted within the bellows 1. One end of the filtering structure is in transmission connection with the driving structure 42, the other end of the filtering structure is in rotary connection with the bellows 1, and the driving structure 42 can drive the filtering structure to rotate so as to filter greasy dirt in the flue gas.

Optionally, the filter structure comprises a filter body structure 41, a first connecting member 43 and a second connecting member 45. The filtering body structure 41 comprises a plurality of oil filtering rods 411, and the plurality of oil filtering rods 411 are arranged at intervals and are enclosed to form a cylinder shape. The first ends of the plurality of oil filtering rods 411 of the first connecting member 43 are connected with the first connecting member 43, and the driving structure 42 is in transmission connection with the first connecting member 43. The second ends of the plurality of oil filtering rods 411 of the second connecting member 45 are connected with the second connecting member 45, the second connecting member 45 is rotatably connected with the bellows 1, and the first ends of the oil filtering rods 411 are opposite to the second ends of the oil filtering rods 411.

Optionally, the rotation speed n of the structure of the filtering body 41 is more than or equal to 60/pi t ₂;

Wherein t ₂＝t₁,t₁＝D/V,V＝Q/S,t₂ is the time required for one of the two adjacent oil filter rods 411 to rotate to the other, t ₁ is the time required for the flue gas to flow through the filter body structure 41, D is the diameter of the oil filter rod 411, V is the flue gas flow speed, Q is the air volume when the range hood is in operation, and S is the maximum area of the cross section of the oil filter rod 411 along the length direction (s=l×w).

Specifically, t ₂ =θ/ω, θ=2pi/m, ω=2pi n/60=pi n/30, θ=2pi/m. Where θ is the included angle between two adjacent oil filter rods 411, ω is the rotation angular velocity of the oil filter rods 411, and m is the number of oil filter rods 411. As long as guarantee t ₂≤t₁, when oil smoke granule is through straining oily subassembly, can be bumped by straining oily pole 411 necessarily to reach filtration purification's effect, because filtration is tubular structure moreover, when filtration rotatory, oil smoke granule is from entering filtration to leaving filtration's whole in-process, oil smoke granule can be through the collision of twice with straining oily pole 411 necessarily, thereby further promote greasy dirt filter effect.

Illustratively, the diameter D of the oil filter rods 411 in the present embodiment is 3mm, the number m of the oil filter rods 411 is 36, L is 600mm, and w is 100mm. The range hood arranged in the home of the common user can meet the requirement of good smoking effect, and the air quantity Q of the range hood in operation can reach 12m ³/min. At this time, the process of calculating the minimum rotation speed n of the filter body 41 structure is as follows: v=q/s=3.33 m/S, t ₁＝D/V＝9×10^-4s,θ＝2π/m＝0.174,t₂＝θ/ω＝60/mn,n＝60/πt₂, at least at t ₂＝t₁, the soot particles will collide with the oil filter rod 411 through the oil filter assembly, n=1851 (r/min) can be obtained, that is, when the air volume Q of the range hood is 12m ³/min, in order to ensure the soot filtering effect, the rotation speed n of the oil filter assembly is not less than 1851RPM.

Therefore, the oil filtering assembly 4 provided in this embodiment can adjust the rotation speed n according to the air quantity Q when the range hood operates, so as to ensure the filtering effect. Generally, the air quantity Q of the range hood is in direct proportion to the oil smoke concentration, so as to achieve a good smoke discharging effect, which is the prior art and will not be described herein. Namely, the oil filter assembly 4 provided in the present embodiment can adjust the rotation speed n according to the concentration of the oil smoke during cooking.

Optionally, the oil filter rod 411 includes a rod body 4111, a first connection structure 4112, and a second connection structure 4113. The first connection structure 4112 is disposed at a first end of the lever body 4111, and the first connection structure 4112 is connected with the first connection member 43. The second connecting structure 4113 is disposed at a second end of the lever body 4111, the second connecting structure 4113 is connected with the second connecting member 45, and the first end of the lever body 4111 is disposed opposite to the second end of the lever body 4111.

Alternatively, the first connecting structure 4112 includes a first adapting portion 41121 and a first plugging portion 41122, which are connected perpendicularly to each other, the first adapting portion 41121 is perpendicular to the rod body 4111, the first adapting portion 41121 extends toward the axial direction of the filtering body structure 41, the first plugging portion 41122 is parallel to the rod body 4111, and the first plugging portion 41122 extends toward the second connecting member 45. The first connection member 43 includes a first connection block 431 and a second connection block 432 that are detachably connected, a first limiting groove 4311 is provided on a circumferential side of the first connection block 431, a second limiting groove 4322 is provided on a circumferential side of the second connection block 432, a first insertion hole 4321 is provided on the second connection block 432, a first end of the rod body 4111 is clamped in the first limiting groove 4311 and the second limiting groove 4322, the first connection portion 41111 is located between the first connection block 431 and the second connection block 432, and the first insertion portion 41122 penetrates through the first insertion hole 4321, thereby realizing connection between the first connection structure 4112 and the first connection member 43. The output end of the driving structure 42 is in transmission connection with the first connecting block 431, and the driving structure 42 can drive the first connecting block 431 to rotate.

Further, the first connection block 431 is further provided with a connection portion 4312, the driving structure 42 includes a second motor, and the output rod 421 of the second motor is inserted into the connection portion 4312, so as to realize the transmission connection between the first connection block 431 and the driving structure 42.

Alternatively, the second connecting structure 4113 includes a second adapting portion 41131 and a second plugging portion 41132, which are connected perpendicularly to each other, the second adapting portion 41131 is perpendicular to the rod body 4111, the second adapting portion 41131 extends toward the axial direction of the filtering body structure 41, the second plugging portion 41132 is parallel to the rod body 4111, and the second plugging portion 41132 extends toward the direction of the first connecting member 43. The second connecting member 45 includes a third connecting block 451 and a fourth connecting block 452 that are detachably connected, the third connecting block 451 is rotationally connected with the bellows 1, a third limiting groove 4511 is provided on a peripheral side of the third connecting block 451, a fourth limiting groove 4522 is provided on a peripheral side of the fourth connecting block 452, a second inserting hole 4521 is provided on the fourth connecting block 452, a second end of the lever body 4111 is clamped in the third limiting groove 4511 and the fourth limiting groove 4522, a second adapting portion 41131 is located between the third connecting block and the fourth connecting block 452, and a second inserting portion 41132 passes through the second inserting hole 4521, thereby realizing connection between the second connecting structure 4113 and the second connecting member 45.

Optionally, the oil filter assembly 4 further comprises a bearing connection structure 44, and the third connection block 451 is rotatably connected to the bellows 1 through the bearing connection structure 44.

Optionally, the bearing connection structure 44 includes a bearing housing 441, a bearing body 442, and a spacer 443. The bearing housing 441 is mounted on the bellows 1, the bearing body 442 is disposed within the bearing housing 441, and the spacer 443 is disposed between the bearing housing 441 and the bearing body 442.

Optionally, a rotation shaft 4512 is further provided at the middle of the third connection block 451, and the rotation shaft 4512 is inserted into the bearing and can rotate relative to the bearing when the filter structure rotates.

Optionally, the filtering body structure 41 further includes a reinforcing member 412, and the reinforcing member 412 is sleeved on the outer sides of the plurality of oil filtering rods 411.

Alternatively, the air inlet 13 is provided at the bottom side of the bellows 1, and the air outlet is provided at the peripheral side of the bellows 1.

Optionally, the bellows 1 includes a lower cover 11 and an upper cover 12, where the lower cover 11 and the upper cover 12 enclose an air chamber 100, an air inlet 13 is formed on the lower cover 11, an air outlet is formed on the upper cover 12, and further, the air outlet is formed on a peripheral side of the upper cover 12.

Optionally, the air outlet seat 3 is further included, and the air outlet seat 3 is installed at the air outlet.

Alternatively, the wind wheel assembly 2 is located at an upper portion of the wind chamber 100, and the oil filter assembly 4 is located at a lower portion of the wind chamber 100.

Optionally, the wind turbine further comprises a sound absorbing member 5, the sound absorbing member 5 is arranged at the lower part of the wind box 100 and is opposite to the oil filtering component 4, the oil filtering component 4 is positioned at one side of the air suction inlet of the wind wheel component 5, and the sound absorbing member 5 is positioned at the other side of the air suction inlet.

Optionally, the wind turbine rotor further comprises a sound absorbing piece 5, the sound absorbing piece 5 is arranged between the wind wheel assembly 2 and the lower cover 11, one side, close to the wind inlet of the wind wheel assembly 2, of the sound absorbing piece 5 is provided with a diversion inclined surface 51, and the diversion inclined surface 51 is obliquely arranged from bottom to top in a direction away from the wind inlet. By arranging the sound absorbing member 5 between the wind wheel assembly 2 and the lower cover 11, sound absorption at the air inlet 13 is realized, and noise at the air inlet 13 is reduced.

Further, a plurality of sound absorbing holes are also formed on the diversion inclined plane.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. A fan structure of a range hood, comprising:

The air box (1) is internally provided with an air cavity (100), and an air inlet (13) and an air outlet are formed in the air box (1);

The wind wheel assembly (2) is arranged in the wind cavity (100) and is used for forming negative pressure in the wind cavity (100);

The oil filtering assembly (4) is arranged in the air cavity (100), and the oil filtering assembly (4) can rotate relative to the air box (1) so as to filter oil stains in smoke entering the air cavity (100) from the air inlet (13).

2. The fan structure of the range hood according to claim 1, wherein the oil filtering component (4) is arranged on one side close to the air inlet (13) and above the air inlet (13), and the wind wheel component (2) is arranged on one side close to the air outlet and communicated with the air outlet.

3. A fan structure of a range hood according to claim 1, characterized in that the oil filter assembly (4) comprises:

a driving structure (42) mounted in the bellows (1);

and one end of the filtering structure is in transmission connection with the driving structure (42), the other end of the filtering structure is in rotary connection with the bellows (1), and the driving structure (42) can drive the filtering structure to rotate so as to filter greasy dirt in the flue gas.

4. A fan structure of a range hood according to claim 3, wherein the filtering structure comprises:

The filtering body structure (41) comprises a plurality of oil filtering rods (411), and the oil filtering rods (411) are arranged at intervals and are enclosed to form a cylinder;

The first ends of the plurality of oil filtering rods (411) are connected with the first connecting members (43), and the driving structure (42) is in transmission connection with the first connecting members (43);

The second ends of the plurality of oil filtering rods (411) are connected with the second connecting members (45), the second connecting members (45) are rotationally connected with the bellows (1), and the first ends of the oil filtering rods (411) are opposite to the second ends of the oil filtering rods (411).

5. The fan structure of a range hood according to claim 4, characterized in that the rotation speed n of the filtering body structure (41) is not less than 60/pi t ₂;

Wherein t ₂＝t₁,t₁＝D/V,V＝Q/S,t₂ is the time required for one of the two adjacent oil filtering rods (411) to rotate to the other, t ₁ is the time required for flue gas to flow through the filtering body structure (41), D is the diameter of the oil filtering rod (411), V is the flow speed of the flue gas, Q is the air quantity when the range hood operates, and S is the maximum area of the cross section of the oil filtering rod (411) along the length direction.

6. The fan structure of a range hood according to claim 4, wherein the oil filter lever (411) includes:

A lever body (4111);

A first connection structure (4112) disposed at a first end of the lever body (4111), the first connection structure (4112) being connected with the first connection member (43);

And a second connection structure (4113) disposed at a second end of the lever body (4111), the second connection structure (4113) being connected to the second connection member (45), the first end of the lever body (4111) being disposed opposite to the second end of the lever body (4111).

7. The fan structure of a range hood according to claim 6, wherein the first connection structure (4112) includes a first adapting portion (41121) and a first plugging portion (41122) that are connected perpendicularly to each other, the first adapting portion (41121) is perpendicular to the lever body (4111), the first adapting portion (41121) extends toward an axial direction of the filtering body structure (41), the first plugging portion (41122) is parallel to the lever body (4111), and the first plugging portion (41122) extends toward the direction of the second connection member (45);

The utility model provides a first connecting member (43) is including dismantling first connecting block (431) and second connecting block (432) of connection, the week side of first connecting block (431) is provided with first spacing groove (4311), the week side of second connecting block (432) is provided with second spacing groove (4322), first spliced eye (4321) have been seted up on second connecting block (432), the first end card of pole body (4111) is established first spacing groove (4311) with in second spacing groove (4322), first connecting portion (41121) are located between first connecting block (431) with second connecting block (432), first spliced eye (41122) pass first spliced eye (4321), the output of drive structure (42) with first connecting block (431) transmission is connected, drive structure (42) can drive first connecting block (431) rotate.

8. The fan structure of a range hood according to claim 6, wherein the second connection structure (4113) includes a second adapting portion (41131) and a second plugging portion (41132) that are connected perpendicularly to each other, the second adapting portion (41131) is perpendicular to the lever body (4111), the second adapting portion (41131) extends toward the axial direction of the filtering body structure (41), the second plugging portion (41132) is parallel to the lever body (4111), and the second plugging portion (41132) extends toward the direction of the first connection member (43);

The second connecting member (45) comprises a third connecting block (451) and a fourth connecting block (452) which are detachably connected, the third connecting block (451) is rotationally connected with the bellows (1), a third limiting groove (4511) is formed in the periphery of the third connecting block (451), a fourth limiting groove (4522) is formed in the periphery of the fourth connecting block (452), a second inserting hole (4521) is formed in the fourth connecting block (452), the second end of the rod body (4111) is clamped in the third limiting groove (4511) and the fourth limiting groove (4522), a second switching portion (41131) is located between the third connecting block (451) and the fourth connecting block (452), and the second inserting portion (41132) penetrates through the second inserting hole (4521).

9. A fan structure of a range hood according to claim 8, characterized in that the oil filter assembly (4) further comprises a bearing connection structure (44), and the third connection block (451) is rotatably connected with the bellows (1) through the bearing connection structure (44).

10. The fan structure of a range hood according to claim 4, wherein the filtering body structure (41) further comprises a reinforcement member (412), and the reinforcement member (412) is sleeved outside the plurality of oil filtering rods (411).

11. A fan structure of a range hood according to any one of claims 1-10, characterized in that the air inlet (13) is provided at the bottom side of the air box (1) and the air outlet is provided at the peripheral side of the air box (1).

12. The fan structure of the range hood according to claim 11, wherein the wind wheel assembly (2) is located at an upper portion of the wind chamber (100), and the oil filtering assembly (4) is located at a lower portion of the wind chamber (100).

13. The fan structure of the range hood according to claim 12, further comprising a sound absorbing member (5), wherein the sound absorbing member (5) is disposed at a lower portion of the bellows (1) and is disposed opposite to the oil filtering assembly (4), the oil filtering assembly (4) is disposed at one side of the suction port of the wind wheel assembly (2), and the sound absorbing member (5) is disposed at the other side of the suction port.

14. The fan structure of the range hood according to claim 13, wherein a side of the sound absorbing member (5) close to the air suction inlet is provided with a diversion inclined surface (51), and the diversion inclined surface (51) is obliquely arranged from bottom to top in a direction away from the air suction inlet.

15. A range hood comprising the blower arrangement of any one of claims 1-14.