CN216814300U - Range hood with circulating and efficient oil stain filtering function - Google Patents

Abstract

The utility model discloses a range hood with a circulating and efficient oil stain filtering function, which belongs to the technical field of range hoods, and solves the problem that the oil stain separating effect is poor because the range hood separates oil and smoke through a filter screen at present; the smoke exhaust ventilator box body is sequentially provided with a communicated column-shaped groove, a bucket-shaped groove, a first round-platform-shaped groove and a second round-platform-shaped groove from bottom to top; an oil collecting box is arranged in the cylindrical groove; a filtering component is arranged in the bucket-shaped groove and comprises a filtering piece, and the cylindrical surface of the circular truncated cone of the filtering piece is attached to the wall surface of the bucket-shaped groove; a turbulence oil separating assembly for further colliding and separating out oil drop particles in the flue gas is arranged in the first circular truncated cone-shaped groove and the second circular truncated cone-shaped groove; the top of the range hood box body is provided with a pipeline rotating assembly. This technical scheme realizes increasing oil smoke separation efficiency to the high-efficient multiple oil smoke separation of oil smoke, improves the flexibility that the lampblack absorber used simultaneously.

Description

Range hood with circulating efficient oil stain filtering function

Technical Field

The utility model relates to the technical field of range hoods, in particular to a range hood capable of circularly and efficiently filtering oil stains.

Background

The range hood has gone through nearly 20 years in China, and the range hood is developed from the original top-suction thin range hood to the side-suction deep range hood, the side-suction range hood increases the power of a fan set for increasing the adsorption coverage area of oil smoke, so that the power consumption of oil smoke is large, and the state that the top-suction range hood and the European range hood are dominant is developed later. The early thin range hood has compact structure and low price, but has the defects of small suction force, large noise, easy oil leakage and the like.

The iterative development top-suction range hood is continuously updated, a mesh cover is installed at the bottom of the top-suction range hood in a protruding mode, a filter screen is installed above the mesh cover, an oil box is installed at a low point below the mesh cover, oil and smoke separation is mainly carried out through the filter screen, the oil and smoke separation effect is poor, and meanwhile oil drops condensed on the filter screen in the using process further influence the oil and smoke separation efficiency.

Based on the problems, the utility model provides the range hood capable of circularly and efficiently filtering oil stains.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the technical background, the utility model aims to provide the range hood capable of circularly and efficiently filtering the oil stains, on one hand, by arranging the circular truncated cone-shaped filtering piece with the concave bottom surface, condensed oil drops can conveniently slide away along the hopper-shaped groove, and the influence of the condensed oil drops on the filtering effect is reduced; on the other hand filters the interior vortex of installation of lampblack absorber box of piece top and educates the oil grain in the flue gas through the disturbance collision to the air current, has solved the current not good problem of top suction formula lampblack absorber oil smoke separation effect of carrying in the background art, has accelerated through unique chute design simultaneously and has educed the collection that drops of oil, the clearance after the greasy dirt of being convenient for collects.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a lampblack absorber with circulation and high-efficiency oil stain filtering function comprises a fan unit and an oil smoke suction filter box, wherein the oil smoke suction filter box comprises an oil smoke machine box body, a filter assembly, a turbulence oil separation assembly and a detachable annular oil collecting box;

the range hood box body is sequentially provided with a communicated cylindrical groove, a bucket-shaped groove, a first circular truncated cone-shaped groove and a second circular truncated cone-shaped groove from bottom to top;

the cylindrical groove is internally provided with a detachable annular oil collecting box;

a filtering component for separating and filtering oil smoke is arranged in the bucket-shaped groove, and the cylindrical surface of the circular truncated cone of the filtering piece is attached to the wall surface of the bucket-shaped groove;

the ends, with larger areas, of the first circular truncated cone-shaped groove and the second circular truncated cone-shaped groove are arranged oppositely, and meanwhile, the turbulence oil separation assemblies for further colliding and separating out oil drop particles in the flue gas are arranged in the first circular truncated cone-shaped groove and the second circular truncated cone-shaped groove;

the top of the range hood box body is provided with a pipeline rotating assembly for adjusting the range hood suction angle.

Further, communicate the even setting of multiunit on the fill shape face in bucket-shaped groove and be in guide chute in the lampblack absorber box, guide chute's both ends intercommunication the cylindrical groove with first round platform groove, install on the cylindrical groove the collection oil box, install fill shape groove top filtering component.

Furthermore, the oil collecting box comprises a bottom plate, an outer ring and an inner ring, the outer ring and the inner ring are concentrically arranged above the bottom plate, first clamping blocks are symmetrically arranged on the bottom plate, first clamping grooves are symmetrically formed in the outer side of the bottom of the box body of the range hood, and the first clamping blocks are inserted into the first clamping grooves.

Furthermore, the outer diameter of the outer ring is equal to the diameter of the cylindrical groove, and the outer diameter of the inner ring is smaller than the diameter of the circumference of the bottom surface of the hopper-shaped groove.

Furthermore, the filtering component comprises a filtering piece and a plurality of groups of gear teeth, wherein the filtering piece is in a round table shape, the bottom of the filtering piece is provided with a concave surface, the round table surface of the filtering piece is uniformly provided with a plurality of groups of gear teeth, the gear teeth are provided with oil seepage channels penetrating through the upper end and the lower end, the gear teeth are inserted into the guide chute, and the bottom of the filtering piece is installed above the hopper-shaped groove through a positioning block.

Further, vortex oil separating assembly contains the spoiler that the multiunit is the type of buckling and is round platform shape bottom and establishes notched vortex piece, and the multiunit spoiler is the annular and installs first round platform shape groove with second round platform shape groove corresponds on the lampblack absorber box internal surface, the below is arranged in to the great one end of vortex piece circumference, simultaneously vortex piece bottom open-ended encircles and evenly is equipped with the multiunit and is used for changing the flue gas flow direction and collides simultaneously and separate out the chute that drips the granule, process the flue gas in chute gets into the vortex piece with first round platform shape groove with air current channel between second round platform shape groove takes place to collide with the multiunit spoiler and separates out oil drip granule, multiunit second fixture block is installed to the spoiler top, the second fixture block clamps in the second draw-in groove that lampblack absorber box top was equipped with.

Furthermore, the top end of the second circular truncated cone-shaped groove is provided with the pipeline rotating assembly on the range hood box body.

Further, the pipeline runner assembly contains first tuber pipe, arc, second tuber pipe, two sets of splint and the servo motor that the top is the arcwall, install first tuber pipe bottom on the lampblack absorber box, set up first wind gap on the arcwall at first tuber pipe top, install the bottom of second tuber pipe the arc, run through on the arc and set up the second wind gap, just the arcwall at first tuber pipe top with the arc laminating installation, the arc both sides are installed through the symmetry splint are installed first tuber pipe top, one of them is a set of install on the splint servo motor, servo motor's output runs through splint are installed first tuber pipe top one side and concentric with the arc.

Furthermore, the other end of the second air pipe is connected with the fan set and is arranged above the integrated stove through the fan set.

Furthermore, a control panel convenient for manual operation is installed on the circumferential surface of one side of the range hood box body.

Compared with the prior art, the utility model has the following advantages:

(1) the range hood is sequentially provided with a column-shaped groove, a bucket-shaped groove, a first circular truncated cone-shaped groove and a second circular truncated cone-shaped groove from bottom to top, the column-shaped groove is internally provided with a detachable annular oil collecting box, the bucket-shaped groove is internally provided with a filtering component for separating and filtering oil smoke, the ends with larger areas of the first circular truncated cone-shaped groove and the second circular truncated cone-shaped groove are oppositely arranged, meanwhile, the first circular truncated cone-shaped groove and the second circular truncated cone-shaped groove are internally provided with a turbulence oil separating component for further colliding and separating oil droplet particles in the smoke, the oil smoke flows into the oil collecting box at the bottom through the surface of the bucket-shaped groove after being separated out by the filtering component, and the filtered smoke further separates out fine oil droplet particles in the smoke through the turbulence oil separating component at the upper part, so that the oil smoke separation efficiency is improved.

(2) According to the range hood, the pipeline rotating assembly capable of adjusting the range hood smoke suction angle is mounted at the top of the range hood box body, the servo motor drives the first air pipe to rotate, the range hood box body is driven by the first air pipe to rotate, and the first air port at the top end of the first air pipe and the second air port on the arc-shaped plate are always in a communicated state in the rotating process, so that the fine adjustment of the range hood smoke suction angle is realized, and the use flexibility of the range hood is improved.

Drawings

FIG. 1 is a first perspective view provided by an embodiment of the present invention;

FIG. 2 is a second perspective view provided in accordance with an embodiment of the present invention;

FIG. 3 is a perspective view of the oil trap in an exploded view according to the embodiment of the present invention;

FIG. 4 is a perspective view of a removed oil trap provided by an embodiment of the present invention;

FIG. 5 is a perspective view of a filter assembly provided by an embodiment of the present invention;

FIG. 6 is a perspective view of a removal filter assembly provided by an embodiment of the present invention;

FIG. 7 is a perspective view, in half section, of a removal filter assembly provided in accordance with an embodiment of the present invention;

FIG. 8 is a perspective view, in half section, of a de-filtration assembly and a turboseparator assembly according to an embodiment of the present disclosure;

FIG. 9 is a partial perspective view of a fluid trap assembly provided by an embodiment of the present invention;

FIG. 10 is a disassembled perspective view of the pipeline rotating assembly provided by the embodiment of the utility model;

fig. 11 is a partial perspective view of a pipeline rotating assembly according to an embodiment of the present invention.

In the figure: 1. a range hood box body; 2. a control panel; 3. a first card slot; 4. a first air duct; 5. a first tuyere; 6. an arc-shaped plate; 7. a second tuyere; 8. a second air duct; 9. a splint; 10. a servo motor; 11. a cylindrical groove; 12. a base plate; 13. a first clamping block; 14. an outer ring; 15. an inner ring; 16. a bucket-shaped groove; 17. a chute guide; 18. a filter member; 19. gear shaping; 20. an oil seepage channel; 21. positioning blocks; 22. a first circular truncated groove; 2201. a second circular truncated groove; 23. a spoiler; 24. a second card slot; 25. a flow disturbing block; 26. a second fixture block; 27. a discharge groove.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

As shown in fig. 1-11, a range hood with circulation and high-efficiency oil stain filtration comprises a fan-wrapping unit and an oil smoke suction filter box, wherein the oil smoke suction filter box comprises a range hood box body 1, a filter assembly, a turbulent oil separating assembly and a detachable annular oil collecting box, and the filter assembly can adopt a filter screen; the range hood box body 1 is sequentially provided with a cylindrical groove 11, a bucket-shaped groove 16, a first circular-truncated-cone-shaped groove 22 and a second circular-truncated-cone-shaped groove 2201 which are communicated from bottom to top, the diameter of the cylindrical groove 11 is larger than the diameter of the circumference of the bottom surface of the bucket-shaped groove 16, and the collected ground is ensured to enter an oil collecting box; a detachable annular oil collecting box is arranged in the cylindrical groove 11; a filtering component for separating and filtering oil smoke is arranged in the bucket-shaped groove 16, the filtering component comprises a filtering piece 18 which is in a round table shape, the bottom of the filtering piece is provided with a concave surface, and the round table cylindrical surface of the filtering piece 18 is attached to the wall surface of the bucket-shaped groove 16; the ends with larger areas of the first circular truncated cone-shaped groove 22 and the second circular truncated cone-shaped groove 2201 are arranged oppositely, and meanwhile, a turbulence oil separation assembly for further colliding and separating out oil drop particles in the flue gas is arranged in the first circular truncated cone-shaped groove 22 and the second circular truncated cone-shaped groove 2201; the pipeline rotating assembly who possesses its oil absorption cigarette angle of regulation is installed at 1 top of lampblack absorber box, and the design is through the smoking passageway that sets up the round platform shape, filters the oil smoke separation after inhaling the flue gas, and the vortex that the flue gas after the filtration got into the top is oil precipitation subassembly further collided and is appeared the greasy dirt granule in the flue gas, and the oil that appears drips collects the oil collecting box to the bottom with higher speed through bucket groove 16 in, avoids oil to drip the siltation to influence oil smoke filter effect.

In this embodiment, the oil smoke enters the bucket-shaped groove 16 through the inner ring of the annular oil collecting box, the oil smoke is separated through the filtering component installed above the bucket-shaped groove 16, the separated oil drops flow into the annular oil collecting box at the bottom through the concave surface at the bottom of the filtering piece 18 and are collected through the bucket-shaped groove 16, the filtered oil smoke enters the first circular truncated cone-shaped groove 22 and the second circular truncated cone-shaped groove 2201 and collides with the turbulence oil separating component installed in the first circular truncated cone-shaped groove 22 and the second circular truncated cone-shaped groove 2201 for multiple times to separate out the oil drops of fine particles, and then the gas is pumped away through the pipeline rotating component at the top, and the oil drops are collected downwards along the first circular truncated cone-shaped groove 22 and the second circular truncated cone-shaped groove 2201 and flow out through double-layer filtering, so that the oil smoke separation efficiency is improved.

As shown in fig. 2 and 7, the bucket-shaped surface of the bucket-shaped groove 16 is communicated with a plurality of groups of guide chutes 17 which are uniformly arranged in the range hood box body 1, two ends of each guide chute 17 are communicated with the cylindrical groove 11 and the first circular truncated cone-shaped groove 22, an oil collecting box is arranged on each cylindrical groove 11, a filter assembly is arranged above each bucket-shaped groove 16, and the efficiency of precipitated oil drop sequential collection is improved by arranging the guide chutes 17.

As shown in fig. 3, the oil collecting box includes a bottom plate 12, an outer ring 14 and an inner ring 15, the outer ring 14 and the inner ring 15 are concentrically installed above the bottom plate 12, a first clamping block 13 is symmetrically installed on the bottom plate 12, a first clamping groove 3 is symmetrically installed on the outer side of the bottom of the range hood case 1, the first clamping block 13 is inserted into the first clamping groove 3, oil drops flow into the space between the outer ring 14 and the inner ring 15 through a guide chute 17 or a funnel 16 surface and are collected, and the oil drops are convenient to detach through the first clamping block 13.

As shown in figure 3, the outer diameter of the outer ring 14 is equal to the diameter of the cylindrical groove 11, the outer diameter of the inner ring 15 is smaller than the circumferential diameter of the bottom surface of the bucket-shaped groove 16, the stability of the oil collecting box installation is improved through size limitation, and meanwhile, the outer diameter of the inner ring 15 is smaller than the circumferential diameter of the bottom surface of the bucket-shaped groove 16, so that oil drops are prevented from leaking out of the oil collecting box.

As shown in fig. 4 and 5, the filtering assembly further comprises a plurality of groups of gear shaping teeth 19, a plurality of groups of gear shaping teeth 19 are uniformly installed on the circular table surface of the filtering element 18, oil seepage channels 20 penetrating through the upper end and the lower end are formed in the gear shaping teeth 19, the gear shaping teeth 19 are inserted into the guide chute 17, the bottom of the filtering element 18 is installed above the bucket-shaped groove 16 through being connected with a positioning block 21, oil drops generated by turbulent flow in the first circular table-shaped groove 22 and the second circular table-shaped groove 2201 enter the oil seepage channels 20 through the guide chute 17 and then enter the guide chute 17 to flow into the oil collecting box at the bottom, the smoothness of the flow is increased through the design of the flow channels, the aperture of the oil seepage channels 20 is controlled, so that gas cannot directly enter the upper part under the working smoke extraction state, and oil drops generated by turbulent flow pass through the oil seepage channels 20 to flow into the oil collecting box at the bottom under the non-working state.

As shown in fig. 7-9, the turbulent oil separating assembly comprises a plurality of groups of bent spoilers 23 and turbulent blocks 25 with grooves on the bottoms of circular truncated cones, the groups of spoilers 23 are annularly arranged on the inner surfaces of the range hood box 1 corresponding to the first circular truncated cone-shaped groove 22 and the second circular truncated cone-shaped groove 2201, the larger end of the circumference of the turbulent block 25 is arranged below, a plurality of groups of discharging grooves 27 for changing the flow direction of smoke and simultaneously colliding and separating oil drop particles are uniformly arranged on the ring of the bottom opening of the turbulent block 25, the smoke passing through the discharging grooves 27 enters an air flow channel between the turbulent block 25 and the first circular truncated cone-shaped groove 22 as well as the second circular truncated cone-shaped groove 2201 to collide with the groups of spoilers 23 to separate oil drop particles, a plurality of groups of second fixture blocks 26 are arranged above the spoilers 23, the second fixture blocks 26 are clamped in the second clamping grooves 24 arranged on the top of the range hood box 1, the smoke filtered by the filter element 18 enters the bottoms of the turbulent blocks 25, after impacting the bottom of the turbulence block 25, the airflow enters an airflow channel between the turbulence block 25 and the first circular truncated cone-shaped groove 22 and the second circular truncated cone-shaped groove 2201 through the flow discharge groove 27 and collides with a plurality of groups of spoilers 23 to separate out oil drop particles, so that the dual turbulence affinity adsorption of fine oil drop particles in smoke is realized, and the oil and smoke separation efficiency is further improved.

As shown in fig. 1, 2 and 8, a pipeline rotating assembly is installed on the range hood box body 1 at the top end of the second circular truncated cone-shaped groove 2201, fine adjustment of the angle of a smoke suction port of the range hood is achieved through the pipeline rotating assembly, and the use flexibility of the range hood is improved.

As shown in fig. 10 and 11, the pipeline rotating assembly includes a first air duct 4 with an arc-shaped top, an arc-shaped plate 6, a second air duct 8, two sets of clamping plates 9 and a servo motor 10, the bottom end of the first air duct 4 is mounted on the box body 1 of the range hood, a first air port 5 is arranged on the arc-shaped top of the first air duct 4, the arc-shaped plate 6 is mounted at the bottom end of the second air duct 8, a second air port 7 is arranged on the arc-shaped plate 6 in a penetrating manner, the arc-shaped top of the first air duct 4 is attached to the arc-shaped plate 6, the tops of the first air ducts 4 are mounted on two sides of the arc-shaped plate 6 through symmetrically-mounted clamping plates 9, the servo motor 10 is mounted on one set of clamping plates 9, the output end of the servo motor 10 penetrates through the clamping plate 9 and is mounted on one side of the top of the first air duct 4 and is concentric with the arc-shaped surface, the servo motor 10 is connected to the control panel 2 through a control module, an operator can control the rotation of the servo motor 10 through the control panel 2, servo motor 10 drives first tuber pipe 4 and rotates the fine setting with top arc center, and the patency of airing exhaust is guaranteed all the time to first wind gap 5 and second wind gap 7 intercommunication at the pivoted in-process, makes first tuber pipe 4 and second tuber pipe 8 within a definite time installation firm and in close contact with through setting up splint 9 and arc 6 simultaneously, avoids gaseous excessive condition to take place, has ensured carminative seal.

The other end of the second air pipe 8 is connected with a fan unit, and meanwhile, the fan unit is installed above the integrated stove, and the effect of exhausting smoke below is achieved by controlling the fan unit to act.

As shown in figure 1, a control panel 2 convenient for manual control is installed on the circumferential surface of one side of a range hood body 1, the range hood is convenient to control through the control panel 2, and the function of intelligent control is increased.

The foregoing shows and describes the general principles, principal features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a possess lampblack absorber of circulation high efficiency filtration greasy dirt, contains fan group and oil smoke suction filter box, its characterized in that: the oil fume suction filter box comprises an oil fume machine box body (1), a filter assembly, a turbulent flow oil separating assembly and a detachable annular oil collecting box;

the range hood box body (1) is sequentially provided with a column-shaped groove (11), a bucket-shaped groove (16), a first circular truncated cone-shaped groove (22) and a second circular truncated cone-shaped groove (2201) from bottom to top;

a detachable annular oil collecting box is arranged in the cylindrical groove (11);

a filtering component for separating and filtering oil smoke is arranged in the bucket-shaped groove (16), the filtering component comprises a filtering piece (18) which is in a round table shape, the bottom of the filtering piece is provided with a concave surface, and the round table cylindrical surface of the filtering piece (18) is attached to the wall surface of the bucket-shaped groove (16);

the ends, with larger areas, of the first circular truncated cone-shaped groove (22) and the second circular truncated cone-shaped groove (2201) are arranged in opposite directions, and meanwhile the first circular truncated cone-shaped groove (22) and the second circular truncated cone-shaped groove (2201) are internally provided with the turbulent oil separation assemblies for further colliding and separating out oil drop particles in the flue gas;

the top of the range hood box body (1) is provided with a pipeline rotating assembly for adjusting the range hood suction angle.

2. The range hood capable of circularly and efficiently filtering oil stains according to claim 1, wherein a plurality of groups of guide chutes (17) uniformly arranged in the range hood box body (1) are communicated with the bucket surface of the bucket-shaped groove (16), two ends of each guide chute (17) are communicated with the cylindrical groove (11) and the first circular truncated cone-shaped groove (22), the oil collecting box is installed on the cylindrical groove (11), and the filter assembly is installed above the bucket-shaped groove (16).

3. The range hood capable of circularly and efficiently filtering oil stains according to claim 2, wherein the oil collecting box comprises a bottom plate (12), an outer ring (14) and an inner ring (15), the outer ring (14) and the inner ring (15) are concentrically arranged above the bottom plate (12), first clamping blocks (13) are symmetrically arranged on the bottom plate (12), first clamping grooves (3) are symmetrically arranged on the outer side of the bottom of the range hood box body (1), and the first clamping blocks (13) are inserted into the first clamping grooves (3).

4. A range hood with oil stain circulating and efficient filtering functions as claimed in claim 3, wherein the outer diameter of the outer ring (14) is equal to the diameter of the cylindrical groove (11), and the outer diameter of the inner ring (15) is smaller than the diameter of the circumference of the bottom surface of the bucket-shaped groove (16).

5. The range hood with the function of efficiently filtering the oil stain in the circulating manner according to claim 2, wherein the filtering assembly further comprises a plurality of groups of gear shaping teeth (19), the plurality of groups of gear shaping teeth (19) are uniformly arranged on a circular table surface of the filtering piece (18), an oil seepage channel (20) penetrating through the upper end and the lower end is formed in the gear shaping teeth (19), the gear shaping teeth (19) are inserted into the guide chute (17), and the bottom of the filtering piece (18) is arranged above the bucket-shaped groove (16) through a positioning block (21).

6. The range hood with the circulating high-efficiency oil stain filtering function according to claim 5, wherein the oil disturbing and separating assembly comprises a plurality of bent spoilers (23) and turbulent flow blocks (25) with grooves formed in the bottoms of circular truncated cones, the spoilers (23) are annularly arranged on the inner surface of the range hood box body (1) corresponding to the first circular truncated cone-shaped groove (22) and the second circular truncated cone-shaped groove (2201), one end with a larger circumference of the turbulent flow blocks (25) is arranged below the inner surface, a plurality of discharging grooves (27) for changing the flow direction of smoke and simultaneously colliding and separating oil drop particles are uniformly arranged on the ring with an opening at the bottom of the turbulent flow blocks (25), the smoke passing through the discharging grooves (27) enters the turbulent flow blocks (25) and collides and separates oil drop particles with the spoilers (23) through an air flow channel between the first circular truncated cone-shaped groove (22) and the second circular truncated cone-shaped groove (2201), a plurality of groups of second fixture blocks (26) are mounted above the spoiler (23), and the second fixture blocks (26) are clamped in second clamping grooves (24) formed in the top of the range hood body (1).

7. The range hood capable of efficiently filtering oil stains circularly according to claim 1, wherein the pipeline rotating assembly is mounted on the range hood box body (1) at the top end of the second circular truncated cone-shaped groove (2201).

8. The range hood with the circulating high-efficiency oil stain filtering function according to claim 7, wherein the pipeline rotating assembly comprises a first air pipe (4) with an arc-shaped top, an arc-shaped plate (6), a second air pipe (8), two groups of clamping plates (9) and a servo motor (10), the bottom end of the first air pipe (4) is installed on the range hood box body (1), a first air port (5) is formed in the arc-shaped surface of the top of the first air pipe (4), the arc-shaped plate (6) is installed at the bottom end of the second air pipe (8), a second air port (7) penetrates through the arc-shaped plate (6), the arc-shaped surface of the top of the first air pipe (4) is attached to the arc-shaped plate (6), the tops of the first air pipe (4) are installed on two sides of the arc-shaped plate (6) through symmetrically installing the clamping plates (9), the servo motor (10) is installed on one group of the clamping plates (9), the output end of the servo motor (10) penetrates through the clamping plate (9) and is installed on one side of the top of the first air pipe (4) and is concentric with the arc-shaped surface.

9. The range hood capable of efficiently filtering oil stains circularly according to claim 8, wherein the fan set is connected to the other end of the second air duct (8) and is installed above the integrated stove through the fan set.

10. The range hood capable of circularly and efficiently filtering oil stains according to claim 1, wherein a control panel (2) convenient for manual control is installed on the circumferential surface of one side of the range hood box body (1).

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