CN113606629A

CN113606629A - Smoke collecting device and range hood

Info

Publication number: CN113606629A
Application number: CN202110932695.7A
Authority: CN
Inventors: 任富佳; 高少华; 郑桐福; 余国成; 周海昕; 陈建卫; 桑磊; 刘硕
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2021-11-05

Abstract

The invention provides a smoke collecting device and a range hood, and relates to the technical field of range hoods, wherein the smoke collecting device comprises a shell component; the smoke collecting cover is provided with a smoke inlet at one side; the baffle is movably connected with the smoke collecting cover and is used for opening or closing the smoke inlet; the driving assembly is in transmission connection with the fume collecting hood and is used for driving the fume collecting hood to extend out of or be accommodated in the shell assembly; the linkage assembly is installed on the shell assembly, and the linkage assembly drives the baffle to move towards the smoke inlet opening position in the process that the smoke collecting cover extends out of the shell assembly. The invention solves the technical problems that a single power source can only satisfy single action and the cost and the manufacturing difficulty are increased due to the arrangement of a plurality of power sources in the related technology.

Description

Smoke collecting device and range hood

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a smoke collecting device and a range hood.

Background

The range hood can quickly pump away waste burnt by the gas stove and oil smoke harmful to human bodies generated in the cooking process of users and exhaust the oil smoke out of a room. The surface of a smoke inlet of a household range hood is sticky with oil, so that the appearance is influenced, so that various electric flap type range hoods are arranged on the market, the smoke inlet is hidden, when the range hood works, a flap is opened by driving a rotating mechanism through an electric push rod, or the smoke inlet originally hidden in the machine body is linearly moved out, and the common power source only can meet one action, so that the smoking effect is poor; in order to ensure that a plurality of actions are opened, a plurality of power sources are arranged, the cost is increased, and the manufacturing difficulty is increased.

Disclosure of Invention

The invention aims to provide a smoke collecting device and a range hood so as to solve the technical problems that in the related art, a single power source only can meet single action, and the cost and the manufacturing difficulty are increased due to the arrangement of a plurality of power sources.

In a first aspect, the present invention provides a smoke collecting device comprising:

a housing assembly;

the smoke collecting cover is connected with the shell component in a sliding mode along the vertical direction, and a smoke inlet is formed in one side of the smoke collecting cover;

the baffle is movably connected with the smoke collecting hood and is used for opening or closing the smoke inlet;

the driving assembly is in transmission connection with the fume collecting hood and is used for driving the fume collecting hood to extend out of or be accommodated in the shell assembly;

the linkage assembly is installed on the shell assembly, the smoke collecting cover extends out of the shell assembly, and the linkage assembly drives the baffle to open the smoke inlet.

In an alternative embodiment, the linkage assembly includes a resilient module by which the flap is hinged to the smoke collection cage, the resilient module causing the flap to have a tendency to move to open the smoke inlet.

In an alternative embodiment, the torsion spring module includes a first fixing plate, a rotation shaft, a first elastic member, and a second fixing plate;

the first fixed plate with the second fixed plate cover is located the axis of rotation, and with the axis of rotation rotates to be connected, first elastic component cover is established the axis of rotation, first fixed plate with the collection petticoat pipe is connected, the second fixed plate with the baffle is connected.

In an alternative embodiment, the opening angle of the first and second fixing plates ranges from 60 ° to 150 °.

In an optional implementation mode, the linkage assembly further comprises a first roller, the first roller is arranged on the housing assembly and is arranged on one side, away from the smoke inlet, of the baffle, a rolling groove is formed in one side, away from the smoke inlet, of the baffle, and the first roller is in rolling fit with the rolling groove.

In an alternative embodiment, the fume collecting device further comprises a sealing assembly, the sealing assembly comprises a flange edge, a supporting table and a sealing gasket, the supporting table is arranged on the housing assembly and arranged on the upper portion of the roller, the flange edge is located above the supporting table and installed on the fume collecting cover, the sealing gasket is arranged outside the supporting table, the fume collecting cover completely extends out of the housing assembly, the flange edge is in contact with the sealing gasket, and the roller is sealed with a gap of the fume collecting cover.

In an alternative embodiment, the linkage assembly includes a rotating assembly and a driven assembly;

the rotating assembly is arranged on the smoke collecting cover, one end of the rotating assembly is connected with the baffle, the other end of the rotating assembly is connected with the driven assembly, the driven assembly is far away from one end of the rotating assembly and connected with the shell assembly, the driving assembly drives the smoke collecting cover to stretch out when the shell assembly, the driven assembly drives the rotating assembly to rotate, so that the baffle is opened to the smoke inlet.

In an alternative embodiment, the fume collecting device further comprises a limiting assembly, wherein the limiting assembly comprises a first limiting box;

the first limiting box is arranged on the shell component, a second limiting groove in the vertical direction is formed in the first limiting box, and one end of the driven component is in sliding fit with the second limiting groove.

The driven assembly comprises a guide piece and a transmission piece, one end of the guide piece is connected with the first limiting box in a sliding mode, the other end of the guide piece is connected with the transmission piece, and one end, far away from the guide piece, of the transmission piece is connected with the rotating assembly.

In an alternative embodiment, the guide comprises a first link and the transmission comprises a second link and a third link; one end of the first connecting rod is connected with the limiting assembly in a sliding mode through a first rotating shaft, and the other end of the first connecting rod is connected with the second connecting rod through a second rotating shaft;

one end, far away from the second rotating shaft, of the second connecting rod is connected with the third connecting rod through a third rotating shaft, the middle of the second connecting rod is connected with the smoke collecting hood through a fourth rotating shaft, and the second connecting rod rotates by taking the fourth rotating shaft as a center;

and one end of the third connecting rod, which is far away from the third connecting rod, is connected with the rotating assembly through a fifth rotating shaft.

In an alternative embodiment, the driven assembly comprises a second roller, a roller fixing frame and a flexible piece;

the second gyro wheel pass through the gyro wheel mount with the collection petticoat pipe is connected, the flexible piece passes the below of second gyro wheel, just one end of flexible piece with rotating component connects, the other end with shell subassembly is connected.

In an optional embodiment, the driven assembly further comprises a limiting bracket, the limiting bracket is connected with the second roller, an annular gap is formed between the limiting bracket and the inner groove in the surface of the second roller, and the flexible part penetrates through the annular gap.

In an optional embodiment, the cross section of the limiting support is U-shaped, a limiting boss is arranged on the inner side of the limiting support, and a space capable of accommodating and limiting the flexible part is formed between the limiting boss and the groove of the second roller.

In an alternative embodiment, the limiting bracket is arranged below the axis of the second roller, and the covering angle of the limiting bracket ranges from 90 degrees to 180 degrees.

In an alternative embodiment, the rotating assembly includes a rotating bracket and a bracket rotating shaft;

the rotary support passes through the support rotation axis with collection petticoat pipe swivelling joint, rotary support's one end with the baffle is connected, the other end with driven subassembly is connected.

In an optional embodiment, the smoke collecting device further comprises a second elastic member, the second elastic member makes the baffle have a movement tendency of closing the smoke inlet, and in a state that the baffle opens the smoke inlet, the second elastic member, the baffle and the smoke collecting cover enclose a smoke collecting cavity.

In an optional embodiment, the driving assembly comprises a screw rod, a screw rod connecting plate, a screw rod movable block and a screw rod motor;

one side of the screw rod connecting plate is connected with the smoke collecting hood, the other side of the screw rod connecting plate is connected with the screw rod movable block, the screw rod movable block is arranged on the screw rod and moves along with the screw rod, and one end of the screw rod is connected with the driving end of the screw rod motor.

In an optional embodiment, a sealing element is arranged on one side of the screw rod close to the screw rod connecting plate, and a groove capable of accommodating the screw rod movable block to slide relative to the screw rod is formed in the sealing element.

In an alternative embodiment, the driving assembly further comprises a slide rail and a slide block, the slide rail is arranged on the housing assembly, and the fume collecting hood is connected with the housing assembly in a sliding mode through the slide rail and the slide block.

In an optional implementation mode, the fume collecting device further comprises an oil path structure, the oil path structure comprises an oil baffle plate, an oil path channel and an oil cup, the oil baffle plate is connected with the shell component, the oil cup is arranged at the lower end of the fume collecting hood, and the oil baffle plate, the oil path channel and the oil cup are sequentially communicated and arranged.

In an optional embodiment, the oil baffle plate comprises a front side plate and a horizontal plate, the horizontal plate is arranged in the shell assembly, an oil plate opening is formed in one end, close to the horizontal plate, of the front side plate, a first oil baffle edge is arranged on the periphery of the oil baffle plate, a second oil baffle edge is arranged on the edge of the oil plate opening, the first oil baffle edge and the second oil baffle edge form an oil guide groove with the horizontal plate, a drainage port communicated with the oil guide groove is formed in the front side plate, an oil receiving port is formed in the smoke collecting hood, the smoke collecting hood extends out completely when the shell assembly, the oil receiving port is located in the vertical direction of the lowest point of the drainage port, an oil leakage hole is formed in the inner side of the smoke collecting hood, and the oil passage is respectively communicated with the drainage port, the oil receiving port and the oil leakage hole.

In an alternative embodiment, the angle between the front side plate and the horizontal plate is between 8 ° and 45 °.

In a second aspect, the present invention provides a range hood comprising a volute assembly and a smoke collecting device as described in any one of the preceding embodiments, the volute assembly being disposed within the housing assembly.

In an optional embodiment, the range hood further comprises a sensing module, the sensing module is arranged on the housing assembly, the sensing module comprises a sensor and a control board, and the sensor is electrically connected with the control board;

the sensor is an infrared sensor or a sound sensor.

By adopting the technical scheme, the invention can realize the following beneficial effects:

according to the invention, the driving assembly and the linkage assembly are arranged, the driving assembly is in transmission connection with the smoke collecting cover, the linkage assembly is installed in the shell assembly, and when the driving assembly drives the smoke collecting cover to extend out of the shell assembly, the linkage assembly can drive the baffle plate connected with the driving assembly to open the smoke inlet.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of a range hood and a cabinet according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of a complete machine hidden state of a range hood according to a first embodiment of the invention;

fig. 3 is a schematic diagram of a complete machine extending state of the range hood according to the first embodiment of the invention;

fig. 4 is an explosion schematic diagram of a range hood according to a first embodiment of the present invention;

fig. 5 is a first schematic view of the operation of a range hood provided by the first embodiment of the invention;

fig. 6 is a schematic diagram of operation of a range hood provided by the first embodiment of the invention;

fig. 7 is a first schematic structural diagram of a smoke collecting device according to a first embodiment of the present invention;

fig. 8 is a schematic structural diagram of a smoke collecting device according to a first embodiment of the present invention;

fig. 9 is a schematic structural diagram three of a smoke collecting device according to a first embodiment of the present invention;

fig. 10 is a schematic view of a torsion spring module of the smoke collecting device according to the first embodiment of the present invention in a compressed state;

fig. 11 is a schematic view of a torsion spring module of the smoke collecting device according to the first embodiment of the present invention in a natural state;

FIG. 12 is a schematic view of a grease path of a fume collecting device according to an embodiment of the present invention;

fig. 13 is a schematic structural view of an oil receiving port of the smoke collecting device according to the first embodiment of the present invention;

fig. 14 is a schematic structural view of an oil baffle of the smoke collecting device according to the first embodiment of the present invention;

FIG. 15 is a side view of an oil baffle of a fume extractor in accordance with an embodiment of the present invention;

fig. 16 is a schematic view of an air inlet gap of a range hood according to a first embodiment of the present invention;

fig. 17 is a schematic structural diagram of a sealing assembly of an fume collecting device according to an embodiment of the present invention;

FIG. 18 is an enlarged view at A of FIG. 17 of the present invention;

fig. 19 is a schematic structural diagram of a range hood provided by a second embodiment of the present invention;

fig. 20 is a partial structural schematic view of a smoke collecting device according to a second embodiment of the present invention;

FIG. 21 is a schematic structural view of a multi-link assembly of a smoke collection device according to a second embodiment of the present invention;

fig. 22 is a schematic structural view of a limiting component of the smoke collecting device according to the second embodiment of the present invention;

fig. 23 is a schematic structural diagram of a driving assembly of a smoke collecting device according to a second embodiment of the present invention;

fig. 24 is a schematic structural diagram of a sensing module of a smoke collecting device according to a second embodiment of the present invention;

fig. 25 is a schematic view of a first operating state of a range hood of the smoke collecting device according to the second embodiment of the present invention;

fig. 26 is a schematic view of a second operating state of a range hood of the smoke collecting device according to the second embodiment of the present invention;

fig. 27 is a schematic structural diagram of a range hood provided by the third embodiment of the present invention;

fig. 28 is a partial structural schematic view of a smoke collecting device according to a third embodiment of the present invention;

fig. 29 is a schematic structural view of a linkage assembly of a smoke collecting device according to a third embodiment of the present invention;

FIG. 30 is a cross-sectional view of a linkage assembly of a smoke collector provided in accordance with a third embodiment of the present invention;

fig. 31 is a schematic structural view of a limiting bracket of a smoke collecting device according to a third embodiment of the present invention;

fig. 32 is a front view of a limiting bracket of a smoke collecting device according to a third embodiment of the present invention;

fig. 33 is a first schematic view of a working state of a range hood provided by a third embodiment of the present invention;

fig. 34 is a schematic view of a working state of a range hood provided by the third embodiment of the present invention;

fig. 35 is a schematic structural view of a linkage assembly of the smoke collecting device according to the fourth embodiment of the present invention.

Icon: 100-a range hood; 200-a volute assembly; 300-a housing assembly; 301-housing top plate; 302-housing shroud; 303-housing floor; 304-housing back plate; 400-a sensing module; 401-a sensor; 402-a control panel; 500-smoke collecting hood; 600-a baffle plate; 700-a drive assembly; 701-a screw rod; 702-a lead screw connection plate; 703-a screw rod movable block; 704-a lead screw motor; 705-a seal; 706-slotting; 707-a slide rail; 800-a linkage assembly; 801-elastic modules; 8011-first fixed plate; 8012-the axis of rotation; 8013-torsion spring; 8014-second fixed plate; 802-a first wheel; 8021-rolling grooves; 803-sealing the assembly; 8031-flanged edge; 8032-supporting table; 8033-a gasket; 3034-air intake gap; 804-a driven assembly; 8041-a first link; 8042-a second link; 8043-a third link; 8044-a first axis of rotation; 8045-a second axis of rotation; 8046-a third axis of rotation; 8047-a fourth axis of rotation; 8048-fifth axis of rotation; 8049-a second roller; 8050-roller fixing frame; 8051-a pliable member; 8052-limit bracket; 8053-limit boss; 8054-roller rotation axis; 8055-a connecting rod; 8056-a first retaining groove; 806-a rotating assembly; 8061-rotating holder; 8062-support rotation axis; 807-a first confinement box; 808-a second limiting groove; 809-a second limit box; 810-a second elastic member; 901-oil baffle; 9011-front side plate; 9012-horizontal plate; 902-oil cup; 903-oil plate opening; 904-first oil retaining side; 905-a second oil retaining edge; 906-oil guide groove; 907-a drainage port; 908-oil receiving port.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

The embodiment provides a range hood 100, refer to fig. 4, this range hood 100 includes spiral case subassembly 200 and smoke collecting device, spiral case subassembly 200 sets up in shell subassembly 300, when drive assembly 700 drive collection petticoat pipe 500 stretches out shell subassembly 300, linkage subassembly 800 can drive baffle 600 that links to each other with it and open the inlet flue, through setting up single power supply, satisfy simultaneously collection petticoat pipe 500 and remove and drive baffle 600 and open and close a plurality of actions of inlet flue, it can only satisfy single action to have alleviated single power supply among the relevant art, and set up the technical problem that a plurality of power supplies cause the cost and make the degree of difficulty to increase.

Specifically, referring to fig. 1, 2 and 4, when the range hood 100 is closed, the whole smoke collecting device is arranged in the housing assembly 300, the whole machine is hung on a wall surface through a hook, and meanwhile, the whole machine is matched and fused with a cabinet and completely hidden in the cabinet, the hidden design aims to better match with the cabinet, so that the problem that the traditional range hood 100 exceeds the depth of the cabinet is solved, the kitchen is more delicate, the range hood 100 and the cabinet are integrated and attractive, the kitchen is neat and tidy, and meanwhile, a user can conveniently clean the wall surface; when lampblack absorber 100 is opened, drive assembly 700 drive collection petticoat pipe 500 moves down along vertical direction to make collection petticoat pipe 500 descend and carry out the oil absorption cigarette work, advance the mouth top and set up baffle 600, increase and hold together the cigarette effect, promote the whole smoking effect of lampblack absorber 100 when having certain sheltering from to advancing the mouth.

Referring to fig. 3 and 24, in an alternative embodiment of this embodiment, the range hood 100 further includes a sensing module 400, the sensing module 400 is disposed on the housing assembly 300, the sensing module 400 includes a sensor 401 and a control board 402, and the sensor 401 is electrically connected to the control board 402; the sensor 401 is an infrared sensor or an acoustic sensor. The range hood 100 is integrally divided into two states, namely a hidden state and a working state, wherein in the hidden state, the smoke collecting hood 500 is hidden in the shell assembly 300, the shell assembly 300 is hidden in a cabinet, and the lower surface of the whole range hood is visible in a supine view; the sensing module 400 is arranged on the lower surface of the whole machine, when the range hood 100 works, a user moves in front of the lower surface of the whole machine, the sensor 401 senses signals, the signals are transmitted to the control panel 402, the control panel 402 gives out an instruction to enable the driving assembly 700 to start working, the smoke collecting hood 500 is operated to descend and the baffle 600 is operated to be opened, and when the sound sensor is adopted, the user gives out an instruction through sound.

The collection cigarette device that this embodiment provided includes: referring to fig. 4, the smoke collecting device includes:

the utility model provides a cigarette case, including shell subassembly 300, collection petticoat pipe 500, baffle 600, drive assembly 700 and linkage assembly 800, collection petticoat pipe 500 is along vertical direction and shell subassembly 300 sliding connection, and one side of collection petticoat pipe 500 is equipped with into the mouth, baffle 600 and collection petticoat pipe 500 swing joint for open or close into the mouth, drive assembly 700 is connected with collection petticoat pipe 500 transmission, be used for driving collection petticoat pipe 500 to stretch out or accomodate in shell subassembly 300, linkage assembly 800 is installed in shell subassembly 300, collection petticoat pipe 500 stretches out the in-process of shell subassembly 300, linkage assembly 800 drives baffle 600 and opens the position motion to advancing the mouth.

Specifically, the housing assembly 300 includes a housing top plate 301, a housing enclosing plate 302, a housing bottom plate 303 and a housing back plate 304, the housing enclosing plate 302, the housing top plate 301, the housing bottom plate 303 and the housing back plate 304 enclose a rectangular cabinet body, the housing back plate 304 is fixed on the wall surface, the volute assembly 200 is arranged on the inner wall of the housing enclosing plate 302, and the smoke inlet cavity assembly is accommodated inside the housing assembly 300.

Referring to fig. 5 and 6, in an alternative embodiment of the present embodiment, the linkage assembly 800 includes two elastic modules 801, the baffle 600 is hinged to the smoke collecting hood 500 through the elastic modules 801, the elastic modules 801 make the baffle 600 have a movement tendency of opening the smoke inlet, the two elastic modules 801 are respectively disposed at both ends of the smoke collecting hood 500 and the baffle 600, and the two elastic modules 801 are symmetrically disposed about an axis of the smoke collecting hood 500 and the baffle 600 in a vertical direction.

Referring to fig. 10 and 11, the elastic module 801 includes a first fixing plate 8011, a rotation shaft 8012, a first elastic member, and a second fixing plate 8014; first elastic component is torsional spring 8013 in this embodiment, first fixed plate 8011 and second fixed plate 8014 cover are established outside axis of rotation 8012, and revolve axis of rotation 8012 and rotate and connect, torsional spring 8013 cover is established between axis of rotation 8012 and first fixed plate 8011 and second fixed plate 8014, first fixed plate 8011 passes through fixing bolt with collection petticoat pipe 500 and is connected, second fixed plate 8014 passes through fixing bolt with baffle 600 and is connected or set screw's is connected, when baffle 600 need be dismantled and wash, only need dismantle the set screw between elastic module 801 and collection petticoat pipe 500 or the baffle 600, do not influence other structures, can wash the change to baffle 600, make the maintenance dismantle conveniently, improve user experience and feel.

The opening and closing angle of the baffle 600 is related to the elastic force of the elastic module 801, when the opening angle of the baffle 600 is kept at the minimum angle, namely, in a compressed state, the baffle 600 is subjected to external force to enable the elastic force of the elastic module 801 to reach the maximum state; when the external force applied to the baffle 600 is removed, the elastic force of the elastic module 801 is in a minimum state, namely in a natural state, the opening angle of the baffle 600 is maximized, the smoke gathering area is improved, and the smoking effect is better; in the process that the baffle 600 receives an external force to make the elastic force of the elastic module 801 reach the maximum state and the external force is released to make the elastic force of the elastic module 801 reach the minimum state, the opening angle of the baffle 600 is transited from the minimum angle to the maximum angle, specifically, under the condition of normal non-compression, the opening angle range of the first fixing plate 8011 and the second fixing plate 8014 is 60 degrees to 150 degrees, and the opening angle of the first fixing plate 8011 and the second fixing plate 8014 is 120 degrees in the embodiment.

Referring to fig. 7, 8, and 9, in an optional embodiment of the present embodiment, the linkage assembly 800 further includes a first roller 802, the first roller 802 is disposed on the housing assembly 300 and disposed on a side of the baffle 600 away from the smoke inlet, a rolling groove 8021 is disposed on a side of the baffle 600 away from the smoke inlet, the first roller 802 is in rolling fit with the rolling groove 8021, the number of the first roller 802 and the rolling groove 8021 is two, the two first rollers 802 are disposed on the housing bottom plate 303, the two first rollers 802 are symmetrically disposed about an axis of the housing bottom plate 303 in a vertical direction, the two rolling grooves 8021 are disposed on the baffle 600 and symmetrically disposed about an axis of the baffle 600 in the vertical direction, the two first rollers are in one-to-one correspondence with the two rolling grooves, and one side of the elastic module 801 is connected with the rolling groove 8021, so as to prevent the first roller 802 from directly contacting the baffle 600. When the cigarette making machine starts to work, the driving assembly 700 drives the smoke collecting cover 500 to move, the first roller 802 and the baffle 600 slide relatively, the baffle 600 is acted by the elastic module 801, so that the baffle 600 starts to rotate around the rotating shaft 8012, and referring to fig. 5 and 6 continuously, after the smoke collecting cover 500 moves for a distance L1, the first roller 802 completely passes through the surface of the baffle 600, at the moment, the baffle 600 is completely opened, the elastic module 801 supports the baffle 600 to form a certain included angle with the surface of the smoke inlet cavity, and the baffle 600 is opened to expose the smoke inlet; when the cigarette machine is closed, the collection petticoat pipe 500 drives the baffle 600 of opening angle and upwards moves, baffle 600 top begins to contact first gyro wheel 802, advance the cigarette chamber and continue the rebound, first gyro wheel 802 rolls on baffle 600 surface, elastic module 801 is extruded, baffle 600 begins to rotate, the opening angle diminishes gradually, after the operation is accomplished, baffle 600 is closed, advance the cigarette chamber subassembly and hide, make the in-process at collection petticoat pipe 500 lift through first gyro wheel 802 and elastic module 801, realize that baffle 600 opens automatically or closes into the mouth, need not to set up driving piece or connecting rod transmission alone, and save the cost, and make overall structure up-and-down motion reliable, it is not fragile.

When the range hood 100 operates, a gap is formed between the first roller 802 and the front side surface of the smoke collecting hood 500, when the range hood normally works, part of oil smoke enters the inner side of the shell assembly 300 through the gap, part of the oil smoke condenses on the surface of the baffle 600, the surface of the rolling groove 8021 and the surface of the first roller 802 to form grease, the grease on the surface of the baffle 600 may generate an oil dripping phenomenon, and the friction force is increased when the grease on the surface of the rolling groove 8021 and the grease on the surface of the first roller 802 roll, so that the first roller 802 rolls difficultly.

In contrast, referring to fig. 16, 17, 18 and 22, in an alternative embodiment of this embodiment, preferably, the smoke collecting device further includes a sealing assembly 803, where the sealing assembly 803 includes a flange 8031, a support platform 8032 and a gasket 8033, the support platform 8032 is disposed on the housing assembly 300 and is disposed on an upper portion of the first roller 802, the flange 8031 is disposed on an upper portion of the support platform 8032 and is fixed to the smoke collecting hood 500, and the gasket 8033 is disposed outside the support platform 8032, when the range hood 100 starts to operate, the driving assembly 700 drives the smoke collecting hood 500 to start moving, until the smoke collecting hood 500 completely extends out of the housing assembly 300, the flange 8031 and the gasket 8033 contact to seal an air intake gap 3034 formed between the first roller 802 and the smoke collecting hood 500, so that cooking fumes cannot pass through this region, thereby solving the above problem.

Referring to fig. 20, in an alternative embodiment of the present embodiment, the driving assembly 700 includes a lead screw 701, a lead screw connecting plate 702, a lead screw moving block 703 and a lead screw motor 704; one side and collection petticoat pipe 500 of lead screw connecting plate 702 are connected, the opposite side is connected with lead screw movable block 703, lead screw movable block 703 sets up on lead screw 701 and moves along with lead screw 701, the one end of lead screw 701 is connected with the drive end of lead screw motor 704, lead screw 701 is rotatory to drive lead screw movable block 703 and to remove along lead screw 701, and then drive the lead screw connecting plate 702 fixed with lead screw movable block 703 and remove, thereby drive the same reciprocal linear motion along with lead screw movable block 703 of collection petticoat pipe 500 of being connected with lead screw connecting plate 702, drive assembly 700 drives collection petticoat pipe 500 and stretches out or accomodates in shell subassembly 300, the straight line fixed point can be realized in the cooperation motion of lead screw 701 and lead screw movable block 703, positioning control, make overall structure up-and-down motion reliable, and prolonged service life.

It should be noted that the power source of the driving assembly 700 is not limited to the above-mentioned structural form, and may be other power sources such as an electric push rod, and the specific structural form of the driving assembly 700 is not limited in the present application.

Referring to fig. 23, in an optional embodiment of the present embodiment, preferably, a sealing element 705 is disposed on one side of the screw rod 701 close to the screw rod connection plate 702, the sealing element 705 is provided with a groove 706 capable of accommodating the screw rod movable block 703 to slide relative to the screw rod 701, the screw rod movable block 703 penetrates through the sealing element 705 to be in transmission connection with the screw rod 701, the sealing element 705 in the present embodiment is a rubber sealing gasket 8033, the groove 706 is a V-shaped groove, which improves a sealing effect, and may also be an arc-shaped groove or the like.

Referring to fig. 4, in an optional implementation manner of the present embodiment, preferably, the driving assembly 700 further includes a sliding rail 707 and a sliding block, the sliding rail 707 is disposed on the housing assembly 300, the smoke collecting cover 500 is slidably connected with the housing assembly 300 through the sliding rail 707 and the sliding block, the sliding rail 707 is located on two sides of the screw rod 701 and is fixedly mounted on the inner wall of the housing back plate 304, the sliding block is mounted on the smoke collecting cover 500 and is in sliding fit with the sliding rail 707, by disposing the sliding rail 707, stability of the smoke collecting cover 500 during operation is increased, and a movement effect and a service life of the whole movement of the smoke collecting cover 500 are improved.

Referring to fig. 12, 13, 14 and 15, in an alternative embodiment of this embodiment, the fume collecting device further includes an oil path structure, the oil path structure includes an oil baffle 901, an oil path passage and an oil cup 902, the oil baffle 901 is connected to the housing assembly 300, the oil cup 902 is disposed at the lower end of the fume collecting hood 500 and moves synchronously with the fume collecting hood 500, specifically, the oil baffle 901 includes a front side plate 9011 and a horizontal plate 9012, an angle is formed between the front side plate 9011 and the horizontal plate 9012, the angle is 8 ° to 45 °, in this embodiment, the preferred angle is 25 °, the horizontal plate 9012 is disposed in the housing assembly 300 and connected to the housing bottom plate 303, and the rear side of the horizontal plate 9012 abuts against the housing rear plate 304, an oil plate opening 903 is opened at one end of the front side plate 9011 close to the horizontal plate 9012, a first oil baffle 904 is disposed on the outer periphery of the oil baffle 901, a second oil baffle 905 is disposed on the edge of the oil plate opening 903, the first oil baffle 904 and the second oil baffle 905 have a vertical height d1, d1 is greater than 3mm, preferably d1 is 6mm in the present embodiment, the first oil retaining edge 904 and the second oil retaining edge 905 form an oil guide groove 906 with the horizontal plate 9012, the narrowest width of the oil guide groove 906 is d2, d2 is greater than 6mm, preferably d2 is 25mm in the present embodiment, the oil guide groove 906 can prevent grease from solidifying and block an oil path, a drainage port 907 communicated with the oil guide groove 906 is arranged on the front side plate 9011, an oil receiving port 908 is arranged on the smoke collection cover 500, when the smoke collection cover 500 completely extends out of the housing assembly 300, the oil receiving port 908 is located in the vertical direction at the lowest point of the drainage port 907, an oil leakage hole is arranged on the inner side of the smoke collection cover 500, the oil path is respectively communicated with the drainage port 907, the oil receiving port 908 and the oil leakage hole, the oil receiving port 908 completely covers the drainage port 907, drops into the smoke collection cover 500 from the drainage port 907, passes through the oil leakage hole designed on the inner side of the smoke collection cover 500, and finally enters the oil cup 902. After the oil baffle 901 is installed, the horizontal projection completely covers the horizontal projection of the volute component 200 and the horizontal projection of the driving device, so that the phenomenon of oil leakage in the range hood 100 is avoided.

Example two

This embodiment provides the smoke collecting device of another structural style, and this smoke collecting device differs from the smoke collecting device that embodiment one provided:

referring to fig. 19, the linkage assembly 800 includes a rotating assembly 806 and a driven assembly 804; the rotating assembly 806 is arranged on the smoke collecting cover 500, one end of the rotating assembly 806 is connected with the baffle 600, the other end of the rotating assembly 806 is connected with the driven assembly 804, one end of the driven assembly 804 far away from the rotating assembly 806 is connected with the shell assembly 300, when the driving assembly 700 drives the smoke collecting cover 500 to extend out of the shell assembly 300, the driven assembly 804 drives the rotating assembly 806 to rotate, so that the baffle 600 opens the smoke inlet, one end of the driven assembly 804 is connected with the rotating assembly 806, the other end of the driven assembly 804 is connected with the shell assembly 300, when the driving assembly 700 drives the smoke collecting cover 500 to extend out of the shell assembly 300, the driven assembly 804 is driven to move downwards, when the driving assembly 700 further drives the smoke collecting cover 500 to descend, the driven assembly 804 drives the rotating assembly 806 to rotate, and further pulls the baffle 600 connected with the rotating assembly 806 to open, and the smoke collecting device provided by the invention simultaneously meets the multiple actions of moving the smoke collecting cover 500 and driving the baffle 600 to open and close the smoke inlet by arranging a single power source, the technical problems that in the related art, a single power source can only meet single action, and the cost and the manufacturing difficulty are increased due to the arrangement of a plurality of power sources are solved.

Referring to fig. 20, in an alternative embodiment of this embodiment, preferably, the smoke collecting device further includes a limiting component, and the limiting component includes a first limiting box 807; first spacing box 807 sets up on shell subassembly 300, has seted up in first spacing box 807 along vertical direction's second spacing groove 808, and the one end and the second spacing groove 808 sliding fit of driven subassembly 804, first spacing box 807 is spacing to the motion of driven subassembly 804.

Referring to fig. 20-22, in an alternative embodiment of this embodiment, it is preferable that the driven component 804 includes a guiding component and a transmission component, one end of the guiding component is slidably connected to the first constraining case 807, the other end of the guiding component is connected to the transmission component, and the end of the transmission component far from the guiding component is connected to the rotating component 806. One end of the guide part slides in the vertical direction along the second limit groove 808, the second limit groove 808 limits the movement of the guide part, and the guide part plays a role in guiding the transmission of the transmission part hinged with the guide part.

Referring to fig. 21 and 22, in an alternative embodiment of the present embodiment, the guide member includes a first link 8041, and the transmission member includes a second link 8042 and a third link 8043; one end of the first connecting rod 8041 is slidably connected with the limiting assembly through a first rotating shaft 8044, and the other end is connected with the second connecting rod 8042 through a second rotating shaft 8045; one end of the second link 8042, which is away from the second rotation shaft 8045, is connected to the third link 8043 through the third rotation shaft 8046, the middle portion of the second link 8042 is connected to the smoke collecting hood 500 through the fourth rotation shaft 8047, and the second link 8042 rotates around the fourth rotation shaft 8047; an end of the third link 8043 remote from the third link 8043 is connected to the rotating assembly 806 by a fifth rotating shaft 8048.

With continued reference to fig. 21, in an alternative embodiment of the present embodiment, the rotating assembly 806 includes a rotating support 8061 and a support rotation axis 8062; the rotating support 8061 is rotatably connected with the smoke collecting hood 500 through a support rotating shaft 8062, one end of the rotating support 8061 is connected with the baffle 600, and the other end of the rotating support 8061 is connected with the driven component 804, specifically, one end of the rotating support 8061 is connected with the baffle 600, the other end of the rotating support 8061 is connected with one end of the third connecting rod 8043, the support rotating shaft 8062 is fixed on the smoke collecting hood 500, and the rotating support 8061 is rotatably connected with the smoke collecting hood 500 through the support rotating shaft 8062, so that the rotating support 8061 rotates with the support rotating shaft 8062.

Referring to fig. 25 and 26, in an alternative embodiment of the present embodiment, the smoke collecting device further includes a second elastic member 810, the second elastic member 810 makes the baffle 600 have a movement tendency of closing the smoke inlet, in a state that the baffle 600 opens the smoke inlet, the second elastic member 810, the baffle 600 and the smoke collecting cover 500 enclose a smoke collecting cavity, the number of the second elastic members 810 is two, the two second elastic members 810 are respectively disposed at two ends of the smoke collecting cover 500, the two second elastic members 810 are symmetrically disposed about an axis in a vertical direction of the baffle 600, two ends of the two second elastic members 810 are respectively fixedly connected with the smoke collecting cover 500 and the baffle 600, in a state that the smoke inlet is opened, the second elastic members 810, the baffle 600 and the smoke collecting cover 500 enclose the smoke collecting cavity 810, and the two second elastic members are both in a stretching state, so that the baffle 600 has a movement tendency of closing the smoke inlet.

Referring to fig. 21, the fourth rotating shaft 8047 and the bracket rotating shaft 8062 are fixed rotating shafts, which are respectively a point E and a point F in the drawing, and the first rotating shaft 8044, the second rotating shaft 8045, the third rotating shaft 8046 and the fifth rotating shaft 8048 are movable rotating shafts, which are respectively A, B, C and D in the drawing, when the range hood 100 starts to work, the screw rod 701 runs to drive the screw rod movable block 703 to vertically move downwards along the screw rod 701, and further drive the screw rod connecting plate 702 fixed to the screw rod movable block 703 to move, so as to drive the smoke collection hood 500 connected to the screw rod connecting plate 702 to run along with the screw rod movable block 703, so that the smoke collection hood 500 starts to linearly move downwards perpendicular to the horizontal plane from a completely hidden position by a running distance L1, the point a of the first connecting rod 8041 moves by a distance L2 in the limiting groove in the limiting box, at this time, the point a of the first connecting rod 8041 runs to the limiting point at the lower end of the limiting groove, and the driven assembly 804 and the smoke collection hood 500 simultaneously move, no relative displacement exists, and the driven component 804 does not generate a transmission effect; when the driving assembly 700 further works, the smoke collection cover 500 drives the driven assembly 804 to continuously move downwards, at this time, the point a in the first connecting rod 8041 is limited by the limiting groove, at this time, the driven assembly 804 starts to transmit, the driven assembly 804 and the smoke collection cover 500 generate relative displacement, one end of the first connecting rod 8041 drives the second connecting rod 8042, the second connecting rod 8042 rotates around the fixed shaft point F, wherein the point B of the movable shaft runs from the position B1 to the point B2, and the point C of the movable shaft runs from the position C1 to the point C2; the second connecting rod 8042 is connected with the third connecting rod 8043, the point C of the movable shaft drives the point D of the third connecting rod 8043 to move around the fixed shaft point E, and the point D of the movable shaft runs from the position D1 to the position D2; the movable shaft D point drives the baffle 600 to rotate and open when rotating, drives the second elastic parts 810 on two sides to expand when the baffle 600 rotates and opens, the whole opening process is completed, the range hood 100 starts to work, and the single power source of the process completes two actions: first, the smoke collection cage 500 moves from a hidden position to a smoking area; secondly, the baffle 600 is opened to drive the second elastic members 810 at two sides to expand to form a cigarette collecting cavity.

EXAMPLE III

The present embodiment provides a smoke collecting device in another structural form, and the difference between the smoke collecting device and the smoke collecting device provided in the first and second embodiments is that:

referring to fig. 27 and 28, the driven assembly 804 includes a second roller 8049, a roller holder 8050, and a flexible member 8051; the second roller 8049 is connected with the smoke collecting hood 500 through the roller fixing frame 8050, is fixed relative to the smoke collecting hood 500, and moves in the same manner, and the second roller 8049 rotates through the roller rotating shaft 8054, the flexible piece 8051 passes through the lower part of the second roller 8049, one end of the flexible piece 8051 is connected with the rotating assembly 806, and the other end of the flexible piece 8051 is connected with the shell assembly 300. In other embodiments, the flexible element 8051 may be a belt, a steel wire, etc. to ensure that the flexible element 8051 has sufficient rigidity and soft property, and can stretch the rotating assembly 806 when being stressed, but is not stressed and is easy to store.

Referring to fig. 29, 30, 31 and 32, in the preferred embodiment, it is further preferred that the driven assembly 804 further includes a limiting bracket 8052, the limiting bracket 8052 is connected to the second roller 8049, an annular gap is formed between the limiting bracket 8052 and an inner groove on the surface of the second roller 8049, the flexible member 8051 passes through the annular gap, a limiting boss 8053 is disposed on an inner side of the limiting bracket 8052, a space capable of accommodating and limiting the connection line is formed between the limiting boss 8053 and a groove of the second roller 8049, the limiting boss 8053 ensures that the connection line is in the inner groove on the surface of the second roller 8049 in any state, the cross section of the limiting bracket 8052 is U-shaped, in order to ensure that the connection line normally runs in the inner groove of the second roller 8049 when the connection line is stressed, the U-shaped limiting bracket 8052 covers below the axis of the second roller 8049, that is right below the second roller 8049 when the second roller 8049 is viewed, the covering angle of the limiting support 8052 is a, 180 degrees is larger than a and larger than 90 degrees, in the embodiment, a is preferably 155 degrees, a plurality of matched mounting through holes are formed in the limiting support 8052 and the second roller 8049, and the limiting support 8052 is connected with the second roller 8049 through a plurality of mounting through holes in a bolt manner. By arranging the limit bracket 8052, the annular gap formed between the limit boss 8053 on the inner side of the limit bracket 8052 and the surface of the second roller 8049 can ensure that the position of the connecting line always passes below the second roller 8049, thereby improving the reliability of the movement between the connecting line and the linkage assembly 800.

Referring to fig. 33, in a further preferred embodiment of the present embodiment, a second limiting box 809 is further disposed inside the housing assembly 300, the second limiting box 809 is fixedly mounted on the housing back plate 304, one end of the connecting wire away from the rotating assembly 806 is connected to the second limiting box 809, and the second limiting box 809 fixes one end of the connecting wire, so as to limit the length of the connecting wire being tensioned, thereby limiting the operating distance of the exhaust fume collecting hood 500.

Referring to fig. 34, the driving assembly 700 drives the collection hood 500 to operate, and the collection hood 500 operates in two stages, that is, in the first stage, the collection hood 500 moves linearly downward vertically and horizontally from the inside of the housing assembly 300, that is, from a completely concealed position, by a travel distance L1, at which the width of the baffle 600 is completely exposed from the inside of the housing assembly 300, the second roller 8049 is rotated by the second roller 8049 rotating shaft, and a connection line passing through the lower side of the second roller 8049 is tightened on a side close to the rotary bracket 8061; in the second stage, the screw rod 701 further moves downwards, the connecting line is stressed, the rotating support 8061 fixed with the connecting line is pulled to rotate by the support rotating shaft 8062, the connecting line rotates to the point B from the initial position point a, and then the baffle 600 connected with the rotating support 8061 is driven to rotate, so that the second elastic piece 810 arranged between the baffle 600 and the smoke collecting cover 500 is unfolded until the connecting line is completely tensioned, the second limiting box 809 limits the connecting line so that the smoke collecting cover 500 cannot continue to move downwards, the smoke collecting cover 500 has a moving distance of L2, at this time, the smoke inlet is completely opened, the baffle 600, the smoke inlet and elastic materials on two sides form a smoke collecting cavity with a certain volume, and the volute system starts to work. When the range hood 100 is closed, the driving assembly 700 drives the smoke collecting hood 500 to retract, and simultaneously the second elastic member 810 rebounds to pull back the baffle 600, so that the smoke inlet is closed, and then the rotating bracket 8061 connected with the baffle 600 is driven to operate from the point B to the point a, and the connecting line is loosened until the smoke collecting hood 500 is completely retracted into the housing assembly 300.

Example four

This embodiment provides the smoke collecting device of another structural style, and this smoke collecting device differs with the smoke collecting device that embodiment three provided:

referring to fig. 35, the driven assembly 804 includes a connecting rod 8055, in this embodiment, the connecting rod 8055 is connected to the smoke collection cover 500 through a fixing member, the flexible member 8051 passes through the connecting rod 8055, and two ends of the flexible member 8051 are connected to the rotating assembly 806 and the housing assembly 300 respectively.

In a further preferred embodiment of this embodiment, a first limiting groove 8056 is disposed on the connecting rod 8055, the flexible element 8051 moves in the first limiting groove 8056, the first limiting groove 8056 is disposed along a circumferential direction of the connecting rod 8055, an extending direction of the first limiting groove 8056 coincides with an extending direction of the flexible element 8051, the flexible element 8051 can be limited by disposing the first limiting groove 8056, and reliability and stability of relative movement between the flexible element 8051 and the linkage assembly 800 are improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An extractor hood device, comprising:

a housing assembly (300);

the smoke collecting cover (500), wherein a smoke inlet is formed in one side of the smoke collecting cover (500);

the baffle (600) is movably connected with the smoke collecting cover (500) and is used for opening or closing the smoke inlet;

a drive assembly (700), the drive assembly (700) being in transmission connection with the fume collecting hood (500) for driving the fume collecting hood (500) to extend out of or be received in the housing assembly (300);

a linkage assembly (800), the linkage assembly (800) is installed on the shell assembly (300), the smoke collecting hood (500) extends out of the shell assembly (300), and the linkage assembly (800) drives the baffle (600) to open the smoke inlet.

2. A fume collecting device according to claim 1, characterized in that said linkage assembly (800) comprises an elastic module (801), said flap (600) being hinged with said fume collecting hood (500) through said elastic module (801), said elastic module (801) giving said flap (600) a tendency to move to open said fume inlet.

3. A fume collecting device according to claim 2, characterized in that said elastic module (801) comprises a first fixed plate (8011), a rotating shaft (8012), a first elastic member and a second fixed plate (8014);

the first fixing plate (8011) and the second fixing plate (8014) are sleeved on the rotating shaft (8012), the rotating shaft (8012) is connected with the rotating shaft (8012) in a rotating mode, the first elastic piece is sleeved on the rotating shaft (8012), the first fixing plate (8011) is connected with the smoke collecting hood (500), and the second fixing plate (8014) is connected with the baffle plate (600).

4. A fume collecting device according to claim 3, characterized in that said first fixing plate (8011) and said second fixing plate (8014) are open at an angle in the range of 60 ° -150 °.

5. A smoke collecting device according to claim 2, wherein said linkage assembly (800) further comprises a first roller (802), said first roller (802) is disposed on said housing assembly (300) and is disposed on a side of said baffle (600) away from said smoke inlet, a rolling groove (8021) is disposed on a side of said baffle (600) away from said smoke inlet, and said first roller (802) is in rolling fit with said rolling groove (8021).

6. An apparatus according to claim 5, further comprising a seal assembly (803), wherein the seal assembly (803) comprises a flange (8031), a support platform (8032) and a gasket (8033), the support platform (8032) being disposed on the housing assembly (300) and disposed on the first roller (802) upper portion, the flange (8031) being located above the support platform (8032) and mounted to the hood (500), the gasket (8033) being disposed outside the support platform (8032), the hood (500) being fully extended from the housing assembly (300) such that the flange (8031) contacts the gasket (8033) to seal a gap between the first roller (802) and the hood (500).

7. The fume extraction apparatus according to claim 1, wherein said linkage assembly (800) comprises a rotating assembly (806) and a driven assembly (804);

the baffle plate is installed on the rotating assembly, the rotating assembly (806) is arranged on the smoke collecting cover (500), one end of the rotating assembly (806) is connected with the baffle plate (600), the other end of the rotating assembly (806) is connected with the driven assembly (804), one end of the driven assembly (804) far away from the rotating assembly (806) is connected with the shell assembly (300), when the driving assembly (700) drives the smoke collecting cover (500) to extend out of the shell assembly (300), the driven assembly (804) drives the rotating assembly (806) to rotate, so that the baffle plate (600) opens the smoke inlet.

8. The fume extraction device of claim 7, further comprising a stop assembly, said stop assembly comprising a first stop collar (807);

the first limiting box (807) is arranged on the shell assembly (300), a second limiting groove (808) extending along the vertical direction is formed in the first limiting box (807), and one end of the driven assembly (804) is in sliding fit with the second limiting groove (808).

9. A smoke collecting device according to claim 8, wherein said driven member (804) comprises a guiding member and a transmission member, wherein one end of said guiding member is slidably connected to said first stopping magazine (807), and the other end of said transmission member is connected to said transmission member, and wherein the end of said transmission member remote from said guiding member is connected to said rotating member (806).

10. A smoke collecting device according to claim 9, wherein said guide member comprises a first link (8041), said transmission member comprises a second link (8042) and a third link (8043);

one end of the first connecting rod (8041) is connected with the limiting assembly in a sliding mode through a first rotating shaft (8044), and the other end of the first connecting rod (8041) is connected with the second connecting rod (8042) through a second rotating shaft (8045);

one end of the second link (8042) remote from the second rotation shaft (8045) is connected to the third link (8043) through a third rotation shaft (8046), a middle portion of the second link (8042) is connected to the smoke collection hood (500) through a fourth rotation shaft (8047), and the second link (8042) rotates about the fourth rotation shaft (8047);

one end of the third connecting rod (8043) far away from the third connecting rod (8043) is connected with the rotating assembly (806) through a fifth rotating shaft (8048).

11. The fume extraction device according to claim 7, wherein said driven assembly (804) comprises a second roller (8049), a roller mount (8050), and a flexible member (8051);

the second roller (8049) is connected with the smoke collecting hood (500) through the roller fixing frame (8050), the flexible piece (8051) penetrates through the lower part of the second roller (8049), one end of the flexible piece (8051) is connected with the rotating assembly (806), and the other end of the flexible piece (8051) is connected with the shell assembly (300).

12. A smoke collecting device according to claim 11, wherein said driven assembly (804) further comprises a limit bracket (8052), said limit bracket (8052) being connected to said second roller (8049), an annular gap being formed between said limit bracket (8052) and a groove in the surface of said second roller (8049), said flexible member (8051) passing through said annular gap.

13. A smoke collecting device according to claim 12, wherein said limiting bracket (8052) is U-shaped in cross section, a limiting boss (8053) is provided on the inner side of said limiting bracket (8052), and a space for accommodating said flexible member (8051) and limiting said flexible member (8051) is formed between said limiting boss (8053) and the groove of said second roller (8049).

14. A fume extractor according to claim 12, wherein said limit bracket (8052) is arranged below the axis of said second roller (8049), said limit bracket (8052) having a coverage angle in the range of 90 ° -180 °.

15. The fume collecting device according to claim 7, characterized in that said rotating assembly (806) comprises a rotating bracket (8061) and a bracket rotation shaft (8062);

the rotary support (8061) is connected with the smoke collecting cover (500) in a rotating mode through the support rotating shaft (8062), one end of the rotary support (8061) is connected with the baffle (600), and the other end of the rotary support is connected with the driven assembly (804).

16. A smoke collecting device according to any one of the claims 7-15, wherein said smoke collecting device further comprises a second elastic member (810), said second elastic member (810) makes said baffle (600) have a movement tendency to close said smoke inlet, and said second elastic member (810) encloses a smoke-collecting chamber with said baffle (600) and said smoke collecting hood (500) in a state that said baffle (600) opens said smoke inlet.

17. The fume collecting device according to claim 1, wherein said driving assembly (700) comprises a screw (701), a screw connecting plate (702), a screw movable block (703) and a screw motor (704);

one side of the screw rod connecting plate (702) is connected with the smoke collecting hood (500), the other side of the screw rod connecting plate is connected with the screw rod movable block (703), the screw rod movable block (703) is arranged on the screw rod (701) and moves along with the screw rod (701), and one end of the screw rod (701) is connected with the driving end of the screw rod motor (704).

18. The smoke collecting device according to claim 17, wherein a sealing member (705) is provided on a side of the screw rod (701) close to the screw rod connecting plate (702), and a groove (706) for accommodating the screw rod movable block (703) to slide relative to the screw rod (701) is provided on the sealing member (705).

19. The fume collecting device according to claim 17, wherein said drive assembly (700) further comprises a slide rail (707) and a slider, said slide rail (707) being disposed on said housing assembly (300), said fume collecting hood (500) being slidably connected with said housing assembly (300) through said slide rail (707) and slider.

20. An oil fume collecting device according to any one of claims 1 to 15 and 17 to 19, characterized in that said oil fume collecting device further comprises an oil circuit structure, said oil circuit structure comprises an oil baffle plate (901), an oil circuit channel and an oil cup (902), said oil baffle plate (901) is connected with said housing assembly (300), said oil cup (902) is arranged at the lower end of said oil fume collecting hood (500), said oil baffle plate (901), said oil circuit channel and said oil cup (902) are arranged in communication in this order.

21. The fume collecting device according to claim 20, wherein the oil baffle (901) comprises a front side plate (9011) and a horizontal plate (9012), the horizontal plate (9012) is disposed in the housing assembly (300), an oil baffle opening (903) is opened at one end of the front side plate (9011) close to the horizontal plate (9012), a first oil baffle edge (904) is disposed on the periphery of the oil baffle (901), a second oil baffle edge (905) is disposed on the edge of the oil baffle opening (903), the first oil baffle edge (904) and the second oil baffle edge (905) and the horizontal plate (9012) form an oil guide groove (906), a flow guide opening (907) communicated with the oil guide groove (906) is disposed on the front side plate (9011), an oil receiving opening (908) is disposed on the fume collecting hood (500), and when the fume collecting hood (500) completely extends out of the housing assembly (300), the oil receiving port (908) is positioned in the vertical direction of the lowest point of the drainage port (907), an oil leakage hole is formed in the inner side of the fume collecting hood (500), and the oil passage is respectively communicated with the drainage port (907), the oil receiving port (908) and the oil leakage hole.

22. A fume collecting device according to claim 21, characterized in that the angle between said front side plate (9011) and said horizontal plate (9012) is 8 ° -45 °.

23. A range hood (100), comprising a volute assembly (200) and a smoke collecting device according to any of claims 1-22, the volute assembly (200) being arranged within the housing assembly (300).

24. A range hood (100) according to claim 23, characterized in that the range hood (100) further comprises a sensing module (400), the sensing module (400) being arranged on the housing assembly (300), the sensing module (400) comprising a sensor (401) and a control board (402), the sensor (401) and the control board (402) being electrically connected;

the sensor (401) is an infrared sensor or an acoustic sensor.