CN215863630U - Fume exhaust fan - Google Patents

Abstract

The utility model relates to a range hood, comprising: a housing having a smoke collection chamber; the first smoke inlet cavity is provided with a first smoke inlet cavity communicated with the smoke collection cavity and a first air suction opening communicated with the first smoke inlet cavity, and the first smoke inlet cavity is arranged on the left side of the shell in a telescopic mode relative to the shell and has an opening state extending out of the shell and a closing state being accommodated in the shell; the second advances the cigarette cavity, have with the second that collection cigarette chamber communicates advances the cigarette chamber and with the second inlet scoop that the cigarette chamber communicates is advanced to the second, and this second advances the cigarette cavity with can be relative the flexible mode of casing is located the left side of casing to have and stretch out opening state outside the casing and accomodate receipts in the casing are closed the state. The range hood can effectively enlarge the negative pressure areas on the left side and the right side of the range hood, so that the oil smoke is prevented from escaping from the left side and the right side of the range hood.

Description

Fume exhaust fan

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a range hood.

Background

The range hood is a kitchen appliance for purifying the kitchen environment. The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

The Chinese patent application with the application number of CN201910686470.0 (the publication number of CN110397970A) discloses a range hood, which comprises a fume collecting hood and a box body arranged above the fume collecting hood, wherein the left side and the right side of the bottom of the fume collecting hood are both provided with air inlets which incline to an oil cup at the middle part from top to bottom, and the two air inlets are hinged with fume blocking plates matched with the air inlets. The smoke baffle plates at the two air inlets can be independently opened and closed, so that the negative pressure area and the effective air volume of each air inlet are ensured under different cooking states, and the oil smoke absorption effect is enhanced.

However, the range hood in the above patent still has certain not enough, and this range hood has adopted wider fuselage and the baffle that opens and shuts about the cooperation to increase the negative pressure area to the problem of running the cigarette in the left and right sides, thereby reach the purpose of clean oil smoke of inhaling, however, because range hood fuselage width and the length of baffle are limited, can't effectively absorb the kitchen flue gas in the top of a kitchen range outside, still inevitably appear in the range hood left and right sides oil smoke escape problem. Secondly, on the kitchen operation panel, other kitchen cooking appliances located in the left and right sides region of the range hood can also produce smoke, and because the width of the range hood body is not enough, the produced smoke can not be quickly and effectively sucked and exhausted by the range hood, so that the air environment of the kitchen is polluted to a certain extent, and the use experience of a user is reduced.

Therefore, the existing range hood needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the utility model is to provide a range hood which can effectively enlarge negative pressure areas on the left and right sides of the range hood so as to prevent oil smoke from escaping from the left and right sides of the range hood, aiming at the current situation of the prior art.

The second technical problem to be solved by the utility model is to provide a range hood capable of effectively sucking and exhausting smoke generated by other cooking appliances located in the left and right side areas of the range hood, aiming at the current situation of the prior art.

The technical solution adopted by the present invention to solve any one of the first technical problem and the second technical problem is: a range hood, comprising:

a housing having a smoke collection chamber;

the first smoke inlet cavity is provided with a first smoke inlet cavity communicated with the smoke collection cavity and a first air suction opening communicated with the first smoke inlet cavity, and the first smoke inlet cavity is arranged on the left side of the shell in a telescopic mode relative to the shell and has an opening state extending out of the shell and a closing state being accommodated in the shell;

the second advances the cigarette cavity, have with the second that collection cigarette chamber communicates advances the cigarette chamber and with the second inlet scoop that the cigarette chamber communicates is advanced to the second, and this second advances the cigarette cavity with can be relative the flexible mode of casing is located the left side of casing to have and stretch out opening state outside the casing and accomodate receipts in the casing are closed the state.

In order to effectively enlarge the negative pressure area of the range hood in the left-right direction, the first air suction opening is positioned at the leftmost side of the first smoke inlet cavity and inclines rightwards from top to bottom, and the second air suction opening is positioned at the rightmost side of the second smoke inlet cavity and inclines leftwards from top to bottom. The first air suction opening and the second air suction opening are obliquely arranged, so that the oil smoke rising to the first air suction opening can be quickly sucked and exhausted. On the other hand, the first air suction opening and the second air suction opening which are obliquely arranged can also correspond to other cooking appliances facing the left side and the right side of the range hood, and smoke generated by the other cooking appliances is quickly sucked and exhausted.

In order to ensure the oil fume suction effect, the included angle between the first air suction opening and the vertical plane and the included angle between the second air suction opening and the vertical plane are both 30-60 degrees, and preferably 43 degrees.

In order to realize the independent adjustment of the air quantity of the first air suction opening and the second air suction opening on the left side and the right side and adapt to different cooking states, the cooking device further comprises a first smoke baffle arranged on the first smoke inlet cavity and capable of being opened or closed, and a second smoke baffle arranged on the second smoke inlet cavity and capable of being opened or closed.

In order to further enlarge the smoke collecting area and reduce the escape of oil smoke, one end of the first smoke baffle is hinged with the upper end of the first smoke inlet cavity positioned at the first air suction port, and one end of the second smoke baffle is hinged with the upper end of the second smoke inlet cavity positioned at the second air suction port.

In order to reduce the escape of oil smoke on the basis of expanding the smoke collecting area as much as possible, under the condition that the first smoke baffle and the second smoke baffle are in an opening state, the included angles between the first smoke baffle and the vertical plane and between the second smoke baffle and the vertical plane are larger than 0 degree and smaller than or equal to 90 degrees.

In order to realize the hidden design purpose of corresponding the air intake, the whole aesthetic property of range hood has been improved, the casing has the first opening that is located the left and the second opening that is located the right side, first advance cigarette cavity physical stamina business turn over first opening, the second advances cigarette cavity physical stamina business turn over the second opening first advance cigarette cavity and second advance the cigarette cavity and be in under the receipts state, first cigarette board cover first opening, second cigarette board covers the second opening.

The flexible action of first advance cigarette cavity and second advance cigarette cavity can be realized through manual operation, also can realize automatic flexible through the drive arrangement drive, preferably, in order to realize the automatic action of first advance cigarette cavity and second advance cigarette cavity, still include:

the first telescopic motion mechanism is arranged in the shell, and the power action end of the telescopic motion mechanism is connected with the first smoke inlet cavity so as to drive the first smoke inlet cavity to extend out of the shell or be accommodated in the shell;

and the second telescopic motion mechanism is arranged in the shell, and the power action end of the telescopic motion mechanism is connected with the second smoke inlet cavity so as to drive the second smoke inlet cavity to extend out of the shell or be accommodated in the shell.

The first smoke inlet cavity and the second smoke inlet cavity are independently driven by the first telescopic motion mechanism and the second telescopic motion mechanism respectively, so that the purpose of designing air inlet of a left single-opening single-suction double channel can be achieved, and different cooking working conditions are met.

The first telescopic motion mechanism and the second telescopic motion mechanism can adopt various prior art such as various link mechanisms (crank link mechanisms), various telescopic link mechanisms and the like, and are electric push rods in order to ensure the stability of the movement of the smoke inlet cavity and reduce the production cost.

In order to drive the smoke baffle to realize automatic turnover, the smoke baffle further comprises a first turnover mechanism and a second turnover mechanism, wherein the first turnover mechanism is arranged on the first smoke inlet cavity and used for driving the first smoke baffle to open or close the first air suction opening, and the second turnover mechanism is arranged on the second smoke inlet cavity and used for driving the second smoke baffle to open or close the second air suction opening. The first turnover mechanism and the second turnover mechanism can adopt various prior arts which can drive the smoke baffle to turn over, such as a structure of matching a driving motor with a crankshaft in a transmission way and a structure of matching the driving motor with a connecting rod assembly.

In order to filter the oil smoke at the first air suction opening and the second air suction opening, the oil filter screen is arranged at the first air suction opening and the second air suction opening.

Compared with the prior art, the utility model has the advantages that: the left side and the right side of the range hood are both provided with smoke inlet cavities which can extend out of the shell, wherein the smoke inlet cavities are provided with corresponding air suction ports, so that a negative pressure area of the range hood in the left and right directions is effectively enlarged, and the escape of oil smoke on the left side and the right side of the range hood is improved; on the other hand, after the smoke inlet cavity extends and expands relative to the casing, the whole width of the range hood is increased to 1020mm, the range hood can assist in absorbing oil smoke generated by other kitchen appliances, the air environment of a kitchen is effectively improved, and the user experience is improved.

Drawings

Fig. 1 is a schematic perspective view of a range hood according to an embodiment of the present invention (the smoke inlet cavities on the left and right sides are housed in the casing);

fig. 2 is a schematic perspective view of the range hood according to the embodiment of the present invention (the smoke inlet cavities on the left and right sides extend out of the housing);

FIG. 3 is a perspective view of FIG. 2;

fig. 4 is a front perspective view of the range hood according to the embodiment of the present invention (the smoke inlet cavities on the left and right sides extend out of the housing);

fig. 5 is a front perspective view of the range hood according to the embodiment of the present invention (the smoke inlet cavities on the left and right sides are accommodated in the casing);

fig. 6 is a cross-sectional view taken at a-a in fig. 4.

Detailed Description

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

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

Referring to fig. 1-6, a range hood includes a housing 10, a fan system 13 located in the housing 10, and a smoke baffle, wherein the fan system 13 may be a centrifugal fan for providing negative pressure for sucking and exhausting oil smoke. The structure and the working principle of the fan system 13 are the prior art, and are not described herein.

Fig. 1 is a schematic perspective view of a range hood, in which smoke inlet cavities on the left and right sides are all in a state of being accommodated in a housing 10. Specifically, the casing 10 of the range hood is a vertically disposed cube, the casing has a smoke collecting cavity 100 (see fig. 3 in detail), and the left and right sides of the casing 10 are provided with openings, which are a first opening 11 located on the left side and a second opening 12 located on the right side. In this embodiment, both left and right side walls of the casing 10 are vertical walls, and the first opening 11 and the second opening 12 are both vertically arranged directional openings. The upper portion of the cabinet 10 may be embedded in a cabinet, a front side of the cabinet 10 is provided with a panel as a control area, and the lower portion of the cabinet 10 may be used to install lighting devices.

Fig. 2 is a schematic perspective view of the range hood, wherein the smoke inlet cavities on the left and right sides extend out of the casing 10 and are in an open state. The first smoke inlet cavity 21 and the second smoke inlet cavity 31 are disposed on the left and right sides of the casing 10, wherein the first smoke inlet cavity 21 can enter and exit the first opening 11, and has a retracted state (see fig. 1) accommodated in the casing 10 and an opened state extending out of the casing 10, and similarly, the second smoke inlet cavity 31 can enter and exit the second opening 12, and has a retracted state (see fig. 1) accommodated in the casing 10 and an opened state extending out of the casing 10. The first smoke inlet cavity 21 has a first smoke inlet cavity 210, the second smoke inlet cavity 31 has a second smoke inlet cavity 310, and both the first smoke inlet cavity 210 and the second smoke inlet cavity 310 are communicated with the smoke collecting cavity 100 of the housing 10.

In order to realize the smooth sliding of the first smoke inlet cavity 21 and the second smoke inlet cavity 31 relative to the casing 10, a slide rail (not shown) extending left and right may be disposed in the machine body 10, and the first smoke inlet cavity 21 and the second smoke inlet cavity 31 may be correspondingly slidably constrained on the slide rail.

With continued reference to fig. 2, the first smoke inlet 22 is disposed on the first smoke inlet 21 and is communicated with the first smoke inlet 210, and the second smoke inlet 32 is disposed on the second smoke inlet 31 and is communicated with the second smoke inlet 310. Specifically, the first smoke inlet cavity 21 and the second smoke inlet cavity 31 of the present embodiment may both adopt a square structure, wherein the first air suction opening 22 is located at the leftmost side of the first smoke inlet cavity 21 and is inclined from top to bottom to the right, that is, the first air suction opening 22 faces the left lower side of the range hood. The second air suction opening 32 is located at the rightmost side of the second smoke inlet cavity 31 and is inclined to the left from top to bottom, that is, the second air suction opening 32 faces the lower right of the range hood. The first air suction opening 22 and the second air suction opening 32 are obliquely arranged, so that the oil smoke rising to the positions can be quickly sucked and exhausted; on the other hand, the smoke generated by other cooking appliances in the left and right side areas of the range hood can be rapidly sucked and exhausted through the first air suction opening 22 and the second air suction opening 32, so that the air environment in the kitchen is further improved.

Referring to fig. 4, fig. 4 is a front perspective view of the range hood, wherein the smoke inlet cavities on the left and right sides extend out of the casing 10 and are in an open state. The angle between the first air suction opening 22 and the vertical plane and the angle between the second air suction opening 32 and the vertical plane are both α, where α is 30 ° to 60 °, preferably α is 43 °.

Fig. 3 is a perspective view of the range hood, and it can be seen that oil filter screens 60 are disposed at the first air suction opening 22 and the second air suction opening 32, specifically, the oil filter screens 60 are also obliquely disposed, and the oblique directions of the oil filter screens are consistent with the oblique directions of the corresponding air suction openings, so as to filter the oil smoke passing through the first air suction opening 22 and the second air suction opening 32. The oil filter screen 60 may be a strip grid screen, and the housing 10 may be provided with a corresponding oil cup for receiving the oil flowing down from the oil filter screen 60.

With continued reference to fig. 2, the first smoke inlet cavity 21 and the second smoke inlet cavity 31 are both provided with smoke barriers, specifically, the smoke barriers are a first smoke barrier 23 and a second smoke barrier 33, respectively, wherein one end (i.e., a side edge) of the first smoke barrier 23 is hinged to the upper end of the first smoke inlet cavity 21 located at the first smoke suction port 22, and can open or close the first smoke suction port 22. One end (i.e. the side) of the second smoke baffle 33 is hinged with the upper end of the second smoke inlet 32 of the second smoke inlet cavity 31, and can open or close the second smoke inlet 32. The arrangement of the first smoke baffle 23 and the second smoke baffle 33 further enlarges the smoke collecting area and reduces the escape of the oil smoke. More specifically, in order to reduce the oil smoke from escaping on the basis of enlarging the smoke collecting area as much as possible, when the first smoke baffle 23 and the second smoke baffle 33 are in the open state, an included angle β between the first smoke baffle 23 and the second smoke baffle 33 and the vertical plane is greater than 0 ° and less than or equal to 90 °, and preferably, β is 71 °. The first smoke baffle 23 and the second smoke baffle 33 of the range hood of the embodiment are opened from the left and right sides, so that the problems of shading, sight line blocking, spray head and the like are also avoided.

Referring to fig. 3 and 4, a first telescopic moving mechanism and a second telescopic moving mechanism are further shown in the casing 10, and a power action end of the first telescopic moving mechanism is connected to the first smoke inlet cavity 21, so as to drive the first smoke inlet cavity 21 to enter and exit the first opening 11. The power action end of the second telescopic moving mechanism is connected with the second smoke inlet cavity 31, so that the second smoke inlet cavity 31 is driven to enter and exit the second opening 12.

Referring to fig. 6, fig. 6 is a sectional view taken along line a-a of fig. 4, and both the first and second telescopic moving mechanisms may employ an electric push rod 40. The electric push rod 40 includes a driving motor 41, a push rod cavity 43 and a telescopic rod 44, and when the driving motor 41 operates, the telescopic rod 44 can be driven to extend or retract relative to the push rod cavity 43. The electric push rod 40 can be installed below a fan frame (not shown) through a push rod support 42, the push rod support 42 is specifically a strip-shaped frame and is arranged along the front-back direction of the range hood, and the electric push rods 40 on the left side and the right side can be fixed through one push rod support 42. In this embodiment, the electric pushing rod 40 can be relatively fixed on the pushing rod bracket 42 by bolts, and the end of the telescopic rod 44 of the electric pushing rod 40 is connected with the inner wall surface of the corresponding smoke inlet cavity by the connecting bracket 45. When the electric push rod 40 acts, the smoke inlet cavity can be driven to do telescopic motion, and the stroke is about 183 mm.

Referring to fig. 4, when the first smoke inlet cavity 21 and the second smoke inlet cavity 31 both extend completely and the first smoke baffle 23 and the second smoke baffle 33 are at the maximum opening, the total width of the body of the range hood is L, wherein L can reach 1020mm, and the negative pressure area of the range hood in the left-right direction is effectively enlarged. On the other hand, the first smoke inlet cavity 21 and the second smoke inlet cavity 31 of the embodiment are independently driven by the first telescopic motion mechanism and the second telescopic motion mechanism respectively, so that the air quantity of the first air suction port 22 and the air quantity of the second air suction port 32 on the left side and the right side are independently adjusted, the purpose of designing air inlet with a single opening and a single suction double channel on the left side and the right side can be achieved, and different cooking conditions are met.

Referring to fig. 4, a first turning mechanism 51 for driving the first smoke barrier 23 to open or close the first air suction opening 22 is disposed on the first smoke inlet cavity 21, and a second turning mechanism 52 for driving the second smoke barrier 33 to open or close the second air suction opening 32 is disposed on the second smoke inlet cavity 31. The first turnover mechanism 51 and the second turnover mechanism 52 may adopt various prior arts capable of driving the smoke barrier to turn over, such as a structure of a driving motor 41 cooperating with a crankshaft in a transmission manner and a structure of a driving motor 41 cooperating with a connecting rod assembly, and specifically refer to "a rotating mechanism of a smoke barrier of a side-suction range hood" with the application number of CN201420060233.6, or "a rotating mechanism of a smoke barrier of a range hood" with the application number of CN201710774853.4, or "a rotating mechanism of a smoke barrier of a range hood" with the application number of CN 201822100742.8.

Fig. 5 is a front perspective view of the range hood, wherein the smoke inlet cavities on the left and right sides are received in the casing 10. As can be seen from fig. 5, when the first smoke-blocking plate 23 and the second smoke-blocking plate 31 are in the folded state, the first smoke-blocking plate 23 (driven by the first turning mechanism 51) covers the first opening 11, and the second smoke-blocking plate 33 (driven by the second turning mechanism 52) covers the second opening 12, that is, in this state (in the power-off state), the first smoke-blocking plate 23 is vertically disposed and covers the first opening 11 and is substantially on the same plane as the left side wall of the casing 10, and similarly, the second smoke-blocking plate 33 is vertically disposed and covers the second opening 12 and is substantially on the same plane as the right side wall of the casing 10. The above structure design can realize the hidden design purpose of the corresponding air inlet, and the whole aesthetic property of the range hood is improved.

The range hood of this embodiment's working process:

when cooking operations are performed on both the left and right cooking holes of the cooking bench, after the range hood is started, the first smoke inlet cavity 21 and the second smoke inlet cavity 31 can extend out of the side portion of the casing 10 and are in an open state under the driving of the corresponding telescopic motion mechanisms, meanwhile, under the driving of the first turnover mechanism 51 and the second turnover mechanism 52, the first smoke baffle 23 and the second smoke baffle 33 deflect, and the first air suction opening 22 and the second air suction opening 32 are correspondingly opened, so that oil smoke (including oil smoke generated by other kitchen appliances) generated in the cooking process is sucked and exhausted.

When only one of the left and right double cooking holes of the cooking bench is used for cooking, the unused side smoke inlet cavity can be driven by the corresponding telescopic motion mechanism to retract and be contained in the machine shell 10, and the turnover mechanism drives the smoke baffle plate on the side to deflect to cover the opening on the side part of the machine shell 10, so that the single-opening and single-suction purposes are realized.

When the range hood is stopped, the first smoke inlet cavity 21 and the second smoke inlet cavity 31 can be driven to retract through the first telescopic motion mechanism and the second telescopic motion mechanism and are contained in the casing 10, and the corresponding first turnover mechanism 51 and the second turnover mechanism 52 drive the first smoke baffle 23 and the second smoke baffle 33 to deflect to cover the first opening 11 and the second opening 12 on the two sides of the casing 10, so that the hidden design purpose of the corresponding air inlet is realized, and the overall aesthetic property of the range hood is improved.

On the basis of the above embodiments, other embodiments can be obtained by replacing and improving the related technical features. For example, the first and second telescopic mechanisms may be various conventional techniques such as various link mechanisms (crank link mechanisms) and various telescopic link 44 mechanisms, in addition to the electric push rod 40. For another example, the first air suction opening 22 and the second air suction opening 32 are not limited to be located at the end (the leftmost side or the rightmost side) of the corresponding air intake cavity, and the first air suction opening 22 and the second air suction opening 32 may be disposed on the bottom wall of the air intake cavity and extend in the left-right direction, that is, the extension length of the first air suction opening 22 and the second air suction opening 32 may be substantially the same as the length of the corresponding air intake cavity exposed outside the housing 10.

Claims (11)

1. A range hood, comprising:

a housing (10) having a smoke collection chamber (100);

it is characterized by also comprising:

the first smoke inlet cavity (21) is provided with a first smoke inlet cavity (210) communicated with the smoke collection cavity (100) and a first air suction opening (22) communicated with the first smoke inlet cavity (210), the first smoke inlet cavity (21) is arranged on the left side of the machine shell (10) in a telescopic mode relative to the machine shell (10), and has an opening state extending out of the machine shell (10) and a folding state accommodated in the machine shell (10);

second advances cigarette cavity (31), have with second that smoke collecting cavity (100) communicate advance cigarette cavity (310) and with second inlet scoop (32) that second advances cigarette cavity (310) intercommunication, this second advances cigarette cavity (31) with can be relative casing (10) flexible mode is located the right side of casing (10) to have and stretch out the state of opening outside casing (10) with accomodate receipts state in casing (10).

2. The range hood of claim 1, wherein: the first air suction opening (22) is located at the leftmost side of the first smoke inlet cavity (21) and inclines rightwards from top to bottom, and the second air suction opening (32) is located at the rightmost side of the second smoke inlet cavity (31) and inclines leftwards from top to bottom.

3. The range hood of claim 2, wherein: the included angle between the first air suction opening (22) and the vertical plane and the included angle between the second air suction opening (32) and the vertical plane are both 30-60 degrees.

4. The range hood of any one of claims 1-3, wherein: the smoke-blocking device is characterized by further comprising a first smoke-blocking plate (23) which is arranged on the first smoke inlet cavity (21) and can open or close the first air suction opening (22), and a second smoke-blocking plate (33) which is arranged on the second smoke inlet cavity (31) and can open or close the second air suction opening (32).

5. The range hood of claim 4, wherein: one end of the first smoke baffle (23) is hinged to the upper end of the first air suction opening (22) of the first smoke inlet cavity (21), and one end of the second smoke baffle (33) is hinged to the upper end of the second air suction opening (32) of the second smoke inlet cavity (31).

6. The range hood of claim 5, wherein: under the state that the first smoke baffle (23) and the second smoke baffle (33) are opened, the included angles between the first smoke baffle (23) and the vertical plane and between the second smoke baffle (33) and the vertical plane are more than 0 degree and less than or equal to 90 degrees.

7. The range hood of claim 4, wherein: casing (10) have and be located left first opening (11) and be located second opening (12) on right side, first advance cigarette cavity (21) can pass in and out first opening (11), second advance cigarette cavity (31) can pass in and out second opening (12) first advance cigarette cavity (21) and second advance cigarette cavity (31) and be in under the receipts state, first cigarette board (23) that keep off cover first opening (11), second cigarette board (33) cover second opening (12).

8. The range hood according to any one of claims 1 to 3, further comprising:

the first telescopic motion mechanism is arranged in the machine shell (10), and the power action end of the telescopic motion mechanism is connected with the first smoke inlet cavity (21), so that the first smoke inlet cavity (21) is driven to extend out of the machine shell (10) or be accommodated in the machine shell (10);

the second telescopic motion mechanism is arranged in the machine shell (10), and the power action end of the telescopic motion mechanism is connected with the second smoke inlet cavity (31), so that the second smoke inlet cavity (31) is driven to extend out of the machine shell (10) or be accommodated in the machine shell (10).

9. The range hood of claim 8, wherein: the first telescopic motion mechanism and the second telescopic motion mechanism are both electric push rods (40).

10. The range hood of claim 4, wherein: the device is characterized by further comprising a first turnover mechanism (51) arranged on the first smoke inlet cavity (21) and used for driving the first smoke baffle (23) to open or close the first air suction opening (22), and a second turnover mechanism (52) arranged on the second smoke inlet cavity (31) and used for driving the second smoke baffle (33) to open or close the second air suction opening (32).

11. The range hood of any one of claims 1-3, wherein: the oil filter screen (60) is arranged at the first air suction opening (22) and the second air suction opening (32).

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