CN212005834U

CN212005834U - Smoke exhaust ventilator

Info

Publication number: CN212005834U
Application number: CN202020488129.2U
Authority: CN
Inventors: 谭柏豪; 马世涛; 何新奎; 王春旭; 蒋济武
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-11-24
Anticipated expiration: 2030-04-03

Abstract

The utility model belongs to the domestic appliance field discloses a range hood, and this range hood (100) includes: the bottom of the smoke collecting cover (1) is provided with a smoke collecting cavity; the condensation plate (3) is arranged in the smoke collection cavity, the condensation plate (3) and the transverse inner side wall of the smoke collection cavity are arranged at intervals, and a smoke collection cavity inlet (1c) is formed in a transverse interval area; and a cut-off board module, which comprises a displacement mechanism and a cut-off board (4) arranged at the smoke collection cavity inlet (1 c); the range hood (100) can be switched between a common smoking state and a powerful smoking state, the opening plate (4) and the condensation plate (3) are in butt joint along the transverse direction in the common smoking state, and the displacement mechanism drives the opening plate (4) to move towards the direction of expanding the smoke collection cavity inlet (1c) in the process of switching to the powerful smoking state. The utility model discloses a set up the open-close plate module in range hood, can be according to the corresponding size of adjusting collection smoke chamber entry of different oil smoke circumstances to effectively improve smoking efficiency.

Description

Smoke exhaust ventilator

Technical Field

The utility model relates to the technical field of household appliances, specifically, relate to a range hood.

Background

The existing European-style range hood is generally provided with a condensing plate below an air inlet, the condensing plate is fixedly arranged and has unchanged size, so that the sizes of negative pressures generated at the inlets of smoke collecting cavities on the two transverse sides of the condensing plate are equivalent, and the suction at the inlet of a single-side smoke collecting cavity cannot be independently improved. Therefore, when only one side of the cooking bench generates oil smoke, although most of the oil smoke flows toward the inlet of the smoke collecting cavity on the one side, the speed of smoking on the one side cannot be increased.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect or not enough of prior art, the utility model provides a range hood can be according to the size of the corresponding regulation collection smoke chamber entry of different oil smoke circumstances to effectively improve smoking efficiency.

In order to achieve the above object, the utility model provides a range hood, range hood includes:

the bottom of the smoke collecting cover is provided with a smoke collecting cavity;

the condensation plate is arranged in the smoke collection cavity, the condensation plate and the transverse inner side wall of the smoke collection cavity are arranged at intervals, and a smoke collection cavity inlet is formed in the transverse interval area; and

the opening plate module comprises a displacement mechanism and an opening plate arranged at the inlet of the smoke collection cavity;

the range hood can be switched between a common smoking state and a powerful smoking state, the opening plate and the condensation plate are transversely butted in the common smoking state, and the displacement mechanism drives the opening plate to move towards the direction of enlarging the smoke collection cavity inlet in the process of switching to the powerful smoking state.

Optionally, the displacement mechanism includes a pivoting mechanism, the opening plate includes an inner end of the opening plate and an outer end of the opening plate on both sides, in the normal smoking state, the inner end of the opening plate is in butt joint with the condensation plate along the transverse direction, and in the process of switching to the strong smoking state, the pivoting mechanism drives the inner end of the opening plate to pivot upward relative to the outer end of the opening plate.

Optionally, under the powerful smoking state, collection smoke cavity entry quilt the open-close board divides into along the inboard entry of horizontal inside and outside spaced collection smoke cavity and the outside entry of collection smoke cavity, the open-close board with between the condensing plate horizontal interval region is intra-area to be formed with inboard flue gas runner, the open-close board with between the inner wall of collection smoke cavity horizontal interval region is intra-area to be formed with outside flue gas runner, collection smoke cavity inboard entry inboard flue gas runner with the collection smoke cavity communicates in proper order, collection smoke cavity outside entry outside flue gas runner with the collection smoke cavity communicates in proper order.

Optionally, in the process of switching from the ordinary smoking state to the powerful smoking state, the pivoting mechanism drives the opening plate to move in the transverse direction.

Optionally, the range hood further includes a lifting mechanism for driving the condensation plate to move up and down, and the lifting mechanism drives the condensation plate to move down in the process of switching from the ordinary smoking state to the powerful smoking state.

Optionally, the pivot mechanism includes a motor and a transmission arm assembly connected between the motor and the opening plate, and the motor controls the transmission arm assembly to drive the opening plate to pivot.

Optionally, the transmission arm assembly includes fixed arm and the movable arm folding mechanism that can fold and open and shut, the fixed top of fixed arm set up and bottom pivoted joint in the outer tip of division board, movable arm folding mechanism includes two at least pivoted joint's movable arm, at least one movable arm folding mechanism's top with motor shaft fixed connection and bottom pivoted joint of motor in the interior tip of division board.

Optionally, the transmission arm assembly includes an inner movable arm and an outer movable arm, a bottom end of the inner movable arm is pivotally connected to the inner end of the opening plate, a bottom end of the outer movable arm is pivotally connected to the outer end of the opening plate, one of a top end of the inner movable arm and a top end of the outer movable arm is fixedly connected to a motor shaft of the motor, and the other is fixed by a pivotal connection.

Optionally, the smoke collecting cover comprises a top plate and a guide plate which are arranged at an upper interval and a lower interval, and an interlayer between the top plate and the upper interval area and the lower interval area of the guide plate, the smoke collecting cavity is located below the guide plate, and the motor is arranged in the interlayer between the plates.

Optionally, collection smoke cavity entry is including forming respectively first collection smoke cavity entry and the second collection smoke cavity entry of the horizontal both sides of condensing plate, the open-close plate is including being located the first open-close plate of first collection smoke cavity entry and being located the second open-close plate of second collection smoke cavity entry, displacement mechanism is including being used for the drive the first displacement mechanism that first open-close plate removed and being used for the drive the second displacement mechanism that second open-close plate removed, first displacement mechanism with the mutually independent function of second displacement mechanism.

Optionally, the range hood further includes a smoke probe for detecting a situation of smoke in the smoke collection cavity, and the range hood is configured to be capable of correspondingly controlling the displacement mechanism to operate according to the situation of smoke detected by the smoke probe.

Optionally, the oil smoke probe is arranged on the top surface of the opening plate.

Optionally, in the ordinary smoking state, the opening plate and the condensation plate are in transverse sealing butt joint.

Optionally, the range hood still includes the frame that is located the top of collection petticoat pipe, forms main flue gas runner in the frame and be located fan system in the main flue gas runner, the roof of collection cigarette chamber is equipped with the air intake, collection cigarette chamber the air intake with main flue gas runner communicates in proper order from bottom to top.

The utility model discloses in, range hood can switch between ordinary smoking state and powerful smoking state through setting up the open-close plate module. When the oil smoke in the external environment is more, the range hood is switched to a strong smoking state, and the opening plate moves towards the direction of enlarging the inlet of the smoke collection cavity at the moment, so that the oil smoke entering the inlet of the smoke collection cavity in unit time is increased, and the smoking speed is increased. When the oil smoke in the external environment is less, the smoke collection efficiency can be ensured by keeping the normal size of the smoke collection cavity inlet, so that the range hood can be switched to a common smoke collection state, and at the moment, the opening-closing plate and the condensing plate are transversely butted to reduce the smoke collection cavity inlet. In a word, the utility model discloses a range hood can be according to the corresponding size of adjusting collection smoke chamber entry of different oil smoke circumstances to effectively improve smoking efficiency.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of a range hood according to an embodiment of the present invention, in which the open-close plates on both lateral sides of the condensation plate are in a closed state;

FIG. 2 is another schematic view of the range hood of FIG. 1, illustrating the opening and closing plates on the two lateral sides of the condensation plate in an opened state and a closed state, respectively;

FIG. 3 is another schematic view of the range hood of FIG. 1, illustrating the opening plates on both lateral sides of the condensation plate in an open position;

FIG. 4 is a partial exploded view of the range hood of FIG. 1;

FIG. 5 is a schematic view of the pivot mechanism and the opening plate of FIG. 1;

fig. 6 is a schematic view of another range hood according to an embodiment of the present invention, in which the open-close plates on both lateral sides of the condensation plate are in an open state and vertically block the exposed portion of the air inlet;

fig. 7 is a bottom view of the extractor hood of fig. 6;

FIG. 8 is a partial schematic view of the range hood of FIG. 6;

FIG. 9 is a schematic view of the pivot mechanism and the opening plate of FIG. 6;

FIG. 10 is an exploded view of the pivot mechanism and the opening plate of FIG. 9;

FIG. 11 is a partial cross-sectional view of the range hood of FIG. 6, showing the switch plate in a closed position;

FIG. 12 is an enlarged partial view A-A of the range hood of FIG. 11;

FIG. 13 is a partial cross-sectional view of the range hood of FIG. 6, showing the switch plate in an open position;

fig. 14 is a schematic view of another range hood according to an embodiment of the present invention, in which the range hood is provided with a rectifying plate, the opening plate on one side of the condensing plate is in an open state and the rectifying plate is in a rectifying state, and the opening plate on the other side of the condensing plate is in a closed state and the rectifying plate is in a reset state;

fig. 15 is another schematic view of the range hood in fig. 14, showing the opening plates on both lateral sides of the condensation plate in an open state and the rectification plates in a rectification state;

FIG. 16 is a partial cross-sectional view B-B of the range hood of FIG. 15;

fig. 17 is a partial rear sectional view of the range hood of fig. 14, illustrating the opening plates on both lateral sides of the condensation plate in a closed state and the rectifying plates in a reset state;

FIG. 18 is another partial rear cross-sectional view of the range hood of FIG. 14, illustrating the opening plates on both lateral sides of the condensation plate in an open position and the fairing plates in a fairing position;

FIG. 19 is an enlarged partial view C-C of the range hood of FIG. 18;

FIG. 20 is a schematic view of the pivot mechanism and fairing of FIG. 19;

fig. 21 is an exploded view of the pivot mechanism and fairing of fig. 20.

Description of reference numerals:

100 range hood

1 smoke collecting hood 2 air inlet filter screen

3 4 open-close boards of condensation board

5 commutator 6 motor

7 motor support 8 sealing element

9 oil smoke probe 10 first front side movable arm

11 second front side moving arm 12 first rear side moving arm

13 second rear movable arm 14 front movable arm support

15 front fixing arm 16 rear fixing arm

17 outer movable arm 18 first inner movable arm

19 second inner movable arm 20 first movable arm support

21 second movable arm support 22 joint control transmission arm

23 frame

1a guide plate 1b top plate

1c flue gas collection cavity inlet 1d flue gas collection cavity inner side inlet

1e smoke collecting cavity outer side inlet 2a filter screen exposed part

3a condensation support plate 3b condensation bottom plate

3d condensation plate clamping pin of 3c condensation plate pivoting support arm

4a opening and closing support plate 4b opening and closing bottom plate

4d division board buckle groove of 4c division board pivot seat

4e peripheral edge flanging 4f opening plate pivoting sliding groove

Pivoting chute for 4g opening plate flanging 5a rectifying plate

5b deflector flange 5c deflector pivot seat

22a actuator arm pivot

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention, and is not intended to limit embodiments of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" and "upper" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction.

The invention will be described in detail below with reference to the accompanying drawings in conjunction with exemplary embodiments.

As shown in fig. 1 to 21, an exemplary embodiment of the present invention provides a range hood 100, and the range hood 100 includes a fume collecting hood 1 and a movable condensation plate. Wherein, the bottom of collection petticoat pipe 1 is equipped with the guide plate 1a of hood form, and this guide plate 1a surrounds and limits the collection smoke chamber of opening downwards. The movable condensing plate is including setting up condensing plate 3 and the open-close plate module in the collection smoke chamber, and condensing plate 3 sets up and be formed with the collection smoke chamber entry 1c that communicates collection smoke chamber in the horizontal inside wall (being the horizontal inside wall of guide plate 1a) interval of collection smoke chamber and the horizontal interval region, and at the oil absorption cigarette in-process, the oil smoke among the external environment loops through collection smoke chamber entry 1c and collection smoke chamber and gets into inside the cigarette machine. In addition, the open close plate module comprises an open close plate 4 arranged at the smoke collection cavity inlet 1c and a displacement mechanism for driving the open close plate 4 to displace, the open close plate 4 comprises an inner end part of the open close plate and an outer end part of the open close plate on two transverse sides, and when the open close plate 4 displaces, the size of the smoke collection cavity inlet 1c changes accordingly, so that the oil smoke flow can be adjusted to adjust the smoking speed.

The size of the smoke collection cavity inlet 1c can be adjusted due to the displacement of the opening-closing plate 4, and the range hood 100 can be switched between a common smoking state and a powerful smoking state.

Specifically, in the closed state of the opening plate 4, the range hood 100 is in a common smoking state, at this time, the inner end portion of the opening plate 4 is in transverse butt joint with the condensation plate 3, and the oil smoke in the external environment enters the smoke collection cavity through the smoke collection cavity inlet 1c on the transverse outer side of the outer end portion of the opening plate. Further, under the closed state of the opening plate 4, the bottom surface of the opening plate 4 can be set to be vertically aligned with the bottom surface of the condensation plate 3, that is, the bottom surface of the opening plate 4 and the bottom surface of the condensation plate 3 are located on the same plane, thereby ensuring the aesthetic property. When the condensation plate 3 includes the condensation support plate 3a and the condensation bottom plate 3b stacked up and down and the opening plate 4 includes the opening and closing support plate 4a and the opening and closing bottom plate 4b stacked up and down, the bottom surface of the opening and closing bottom plate 4b and the bottom surface of the condensation bottom plate 3b are located on the same plane in the closed state of the opening plate 4.

When the opening plate 4 is switched from the closed state to the open state, the range hood 100 is switched from the normal smoking state to the powerful smoking state, and the displacement mechanism drives the opening plate 4 to move in the direction of enlarging the smoke collection cavity inlet 1 c. For example, the displacement mechanism can drive the opening plate 4 to move horizontally inwards after vertical displacement, so that the opening plate 4 and the condensing plate 3 are vertically stacked, the smoke collection cavity inlet 1c on the horizontal outer side of the condensing plate 3 is not shielded by the opening plate 4 at all, the oil smoke flow can be greatly increased, and the smoking speed is increased. Alternatively, the displacement mechanism may also drive the opening plate 4 to pivot within the smoke collection chamber inlet 1c to enlarge the smoke collection chamber inlet 1c, as will be described in more detail below with reference to various embodiments.

In summary, when the amount of oil smoke in the external environment is small, the range hood 100 can satisfy the requirement of fast smoking while maintaining the ordinary smoking state, and can ensure the smoking efficiency while saving energy and reducing consumption, and when the amount of oil smoke in the external environment is large, the range hood 100 is switched to the strong smoking state to increase the smoking speed, so as to avoid the excessive oil smoke from being dispersed and difficult to capture. In other words, the range hood 100 can adjust the working state according to different oil smoke conditions, thereby effectively improving the smoking efficiency.

In one embodiment, the displacement mechanism includes a pivot mechanism capable of driving the opening plate 4 to pivot, and during the process of switching the range hood 100 from the normal smoking state to the powerful smoking state, the pivot mechanism can drive the inner end of the opening plate to pivot upward relative to the outer end of the opening plate, and the opening plate 4 after pivoting upward can guide the oil smoke to rise and enter the smoke collection cavity more orderly, thereby playing the role of rectifying and reducing the wind resistance.

In one embodiment, referring to fig. 2, in the strong smoking state, the smoke collection chamber inlet 1c is divided by the upwardly pivoted opening plate into a smoke collection chamber inner inlet 1d and a smoke collection chamber outer inlet 1e which are laterally spaced apart from each other. Wherein, an inner side flue gas flow channel is formed in the transverse interval area between the open close plate 4 and the condensing plate 3, and an outer side flue gas flow channel is formed in the transverse interval area between the open close plate 4 and the inner wall of the smoke collecting cavity (namely the inner wall of the guide plate 1 a). Referring to the drawings, the curve with arrows in the drawing shows the flow path of part of the oil smoke in the external environment, and it can be seen that part of the oil smoke can enter the smoke collection cavity through the inner side inlet 1d and the inner side smoke runner of the smoke collection cavity in sequence, and part of the oil smoke can enter the smoke collection cavity through the outer side inlet 1e and the outer side smoke runner of the smoke collection cavity in sequence. Under the condition that the inlet 1c of the smoke collecting cavity is enlarged, a plurality of smoke channels are divided in the smoke collecting cavity through the split plate 4, and the generation of random flow can be effectively avoided.

In one embodiment, when the range hood 100 is switched from the normal smoking state to the powerful smoking state, the pivoting mechanism can also drive the opening plate 4 to move in the transverse direction in the process of driving the inner end of the opening plate to pivot upwards relative to the outer end of the opening plate. For example, the pivoting mechanism can drive the opening plate 4 to move outwards along the transverse direction to enlarge the size of the smoke collection cavity inlet 1c between the opening plate 4 and the condensing plate 3 as much as possible, and at the moment, the opening plate 4 does not divide a plurality of smoke flow channels in the smoke collection cavity. Alternatively, the pivoting mechanism can drive the opening plate 4 to move inwards in the transverse direction.

In one embodiment, referring to fig. 6 to 8 and 11 to 13, the range hood 100 includes an air inlet disposed on the top wall of the air deflector 1a, wherein the movable condensation plate is disposed below the air inlet, and the air inlet includes an air inlet exposed portion disposed in a transverse interval area between the condensation plate 3 and the transverse inner sidewall of the air deflector 1 a. In other words, the outline of the vertical projection of the condensation plate 3 cannot completely surround the outline of the vertical projection of the air inlet, the condensation plate 3 cannot shield the exposed part of the air inlet along the vertical direction, and if the exposed part of the air inlet is not vertically shielded in the opening process of the opening plate 4, oil inside the smoke machine and the like can drip on the cooking bench through the exposed part of the air inlet, so that the user experience is influenced.

In view of the above, in the present embodiment, the pivot mechanism may be provided as: can drive interior tip of division board relative division board outer tip pivot upwards in order to enlarge collection cigarette chamber entry 1c to and can drive division board 4 and transversely move inwards in order to shelter from the air intake and expose the portion along vertical. At this moment, no matter the plywood 4 is in closed condition or open mode, all can follow the vertical portion that exposes of at least partial air intake of sheltering from to the risk that inside fluid of greatly reduced cigarette machine etc. drips outside the machine.

In one embodiment, the range hood 100 includes an inlet screen 2 mounted to cover the inlet, the inlet screen 2 including a screen exposure portion 2a located in a laterally spaced area between the condensation plate 3 and the laterally inner side wall of the baffle 1a, and the screen exposure portion 2a is mounted to cover the inlet exposure portion. When the movable condensation plate is in an open state (namely, when the opening plate 4 is in an open state), the opening plate 4 which pivots upwards vertically shields at least part of the filter screen exposed part 2a, so that the risk that oil and the like accumulated on the filter screen exposed part 2a drip outside the machine can be greatly reduced.

In one embodiment, to ensure that the opening plate 4 always completely covers the exposed portion of the air inlet, the opening plate 4 may be configured such that the outline of the vertical projection in the opened state surrounds the outline of the vertical projection of the exposed portion of the air inlet. By the arrangement, oil and the like in the range hood can be completely prevented from dropping outside the range hood through the exposed part of the air inlet.

In one embodiment, the front-rear span of the condensation plate 3 may be set to be greater than the front-rear span of the air inlet, and the front end of the condensation plate 3 abuts against the front inner wall of the air guiding plate 1a and the rear end of the condensation plate 3 abuts against the rear inner wall of the air guiding plate 1 a. Under this structure, there is not the interval region along fore-and-aft direction between condensation plate 3 and guide plate 1a, therefore the air intake does not expose from the front end or the rear end of condensation plate 3, so does not have the inside fluid of cigarette machine and drips the risk outside the machine from the front end outside or the rear end outside of condensation plate 3.

In an embodiment, referring to fig. 11 and 12, the inner end of the opening plate is formed with an opening plate fastening groove 4d which is recessed upward and extends in the front-back direction, the lateral outer end of the condensation plate 3 is formed with a condensation plate fastening pin 3d which extends upward and extends in the front-back direction, and the range hood 100 includes a sealing element 8 installed in the opening plate fastening groove 4 d. Under the closed state of movable condensation plate (under the closed state of opening plate 4 promptly), the foot 3d card is detained to the condensation integrated circuit board is gone into in opening plate buckle groove 4d, and the foot 3d crimping is detained to the condensation integrated circuit board is between opening plate buckle groove 4 d's horizontal inside wall and sealing member 8 this moment to realize the horizontal sealed butt joint of opening plate 4 and condensation plate 3, can prevent to form between opening plate 4 and the condensation plate 3 joint gap and the oil leak that leaks out. Of course, other structures may be disposed between the opening/closing plate 4 and the condensation plate 3 to realize the transverse sealing butt joint, and the exemplary embodiment of the present invention is not limited thereto.

In one embodiment, in order to prevent oil and the like accumulated on the top surface of the opening plate 4 from leaking, an upwardly turned peripheral flange 4e may be formed on the peripheral edge of the opening plate 4, and the peripheral flange 4e has a certain vertical height, thereby effectively blocking the oil from overflowing outwards. Further, in order to simplify the structure of the opening plate 4, the peripheral flange 4e at the inner end of the opening plate may be formed as the lateral outer side wall of the opening plate locking groove 4 d. In other words, the peripheral flange 4e at the inner end of the opening plate and the opening plate locking groove 4d may be formed as an integral structure.

In one embodiment, the range hood 100 includes a lifting mechanism for driving the condensation plate 3 to move up and down, and in the process of switching the range hood 100 from the normal smoking state to the powerful smoking state, the lifting mechanism drives the condensation plate 3 to move down, so as to further expand and move down the smoke collection cavity inlet 1c, so that the smoke collection cavity inlet 1c is closer to the cooking bench, thereby increasing the flow rate of the sucked smoke and simultaneously shortening the flow path of the smoke entering the smoke collection cavity inlet 1c, which is beneficial to enhancing the capacity of capturing the smoke. When the range hood 100 is switched from the strong smoking state to the normal smoking state, the lifting mechanism drives the condensation plate 3 to move upwards to reset.

In one embodiment, the pivot mechanism mainly comprises a motor 6 and a transmission arm assembly connected between the motor 6 and the opening plate 4, wherein the motor 6 can control the transmission arm assembly to drive the opening plate 4 to pivot. It should be noted that, because there are many lower structures of the transmission arm assembly, it cannot be exhaustive, and only a few optional lower structures are listed below to illustrate the exemplary embodiment, and other optional structures that are not mentioned should also be considered to be within the scope of the concept of the exemplary embodiment.

In one embodiment, the actuator arm assembly may include a stationary arm and a moveable arm folding mechanism that is capable of folding open and closed. The top end of the fixed arm is fixedly arranged, the bottom end of the fixed arm is pivotally connected to the outer end portion of the opening plate, the movable arm folding mechanism comprises at least two movable arms which are pivotally connected, the top end of at least one movable arm folding mechanism is fixedly connected with a motor shaft of the motor 6, and the bottom end of the at least one movable arm folding mechanism is pivotally connected to the inner end portion of the opening plate. When the movable arm folding mechanism with the bottom end connected to the inner end part of the opening plate is folded or unfolded, the inner end part of the opening plate can be driven to pivot relative to the outer end part of the opening plate, and therefore the opening plate 4 can be driven to be switched between a closed state and an opened state.

For example, referring to fig. 5, the movable arm folding mechanism includes a first front movable arm 10, a second front movable arm 11, a first rear movable arm 12, a second rear movable arm 13, and a front movable arm bracket 14, the fixed arms include a front fixed arm 15 and a rear fixed arm 16 that are spaced apart from each other in the front-rear direction, a plurality of opening plate pivot bases 4c are formed on the top surface of the opening plate 4, and the pivot mechanism further includes a motor bracket 7 for fixedly mounting the motor 6.

The bottom end of the first front movable arm 10 is pivotally connected to the top end of the second front movable arm 11, the top end of the first front movable arm 10 is pivotally connected to the front movable arm support 14, the front movable arm support 14 is fixedly connected to the top wall of the air deflector 1a (for example, may be fixedly connected by screws), and the bottom end of the second front movable arm 11 is pivotally connected to the opening plate pivot seat 4c located at the front side of the inner end of the opening plate.

First rear side digging arm 12 and second rear side digging arm 13 all set up the rear side at first front side digging arm 10 and second front side digging arm 11 at the interval, the bottom of first rear side digging arm 12 and the top pivot connection of second rear side digging arm 13, the top of first rear side digging arm 12 and the motor shaft fixed connection of motor 6 so that first rear side digging arm 12 can follow the motor shaft and rotate, motor support 7 is fixable connects on the roof of guide plate 1a (accessible screw fixed connection for example), the bottom of second rear side digging arm 13 and the open close plate pivot seat 4c pivot connection of the rear side that is located the open plate tip.

The front-side fixing arm 15 can be fixedly connected at its top end to the top wall of the air deflector 1a (for example, by means of screws) and at its bottom end to the opening plate pivot 4c on the front side of the outer end of the opening plate. The rear-side fixing arm 16 is fixedly connected at its top end to the top wall of the air deflector 1a (e.g., by a screw) and at its bottom end to the opening plate pivot base 4c on the rear side of the outer end of the opening plate.

It should be noted that, when the movable condensation plate is disposed to be inclined upward and the front end of the movable condensation plate is higher than the rear end, the total length of the first front movable arm 10 and the second front movable arm 11 is smaller than the total length of the first rear movable arm 12 and the second rear movable arm 13, and the total length of the front fixed arm 15 is smaller than the total length of the rear fixed arm 16.

Through setting up above-mentioned structure, when the motor shaft of motor 6 rotated, can drive first rear side digging arm 12 and upwards rotate, drive first rear side digging arm 12 and second rear side digging arm 13 then and upwards fold and drive first front side digging arm 10 and second front side digging arm 11 and upwards fold to drive the interior tip of opening plate and upwards pivot in order to enlarge the size of collection smoke chamber entry 1c relative to the outer tip of opening plate. In this pivoting process, since both the front-side fixing arm 15 and the rear-side fixing arm are fixedly provided, the smoke collection chamber inlet 1 can be divided into a smoke collection chamber inner-side inlet 1d and a smoke collection chamber outer-side inlet 1e which are partitioned laterally and inwardly by the opening-closing plate 4 which is pivoted upwardly.

In another embodiment, the actuator arm assembly may include an inner movable arm and an outer movable arm 17, the bottom end of the inner movable arm is pivotally connected to the inner end of the opening plate, the bottom end of the outer movable arm 17 is pivotally connected to the outer end of the opening plate, one of the top end of the inner movable arm and the top end of the outer movable arm 17 is fixedly connected to the motor shaft of the motor 6 and the other is fixed by the pivotal connection. With this structure, when the pivoting mechanism drives the opening plate 4 to pivot upward, the opening plate 4 can also be driven to move in the lateral direction.

For example, referring to fig. 9 and 10, the driving mechanism in the illustrated embodiment also drives the opening plate 4 to move inward in the lateral direction. Specifically, the drive arm assembly may include an outer movable arm 17, a first inner movable arm 18, a second inner movable arm 19, a first movable arm bracket 20, and a second movable arm bracket 21. The top surface of the opening plate 4 is formed with a plurality of opening plate pivot seats 4c, and the pivot mechanism further comprises a motor bracket 7 for fixedly mounting a motor 6.

Wherein, the top of outside digging arm 17 is fixedly connected to the motor shaft of motor 6 so that outside digging arm 17 can follow this motor shaft and rotate, motor support 7 can be fixedly connected on the roof of guide plate 1a (for example, can be through screw fixed connection), and the bottom of outside digging arm 17 and the open plate pivot seat 4c pivot connection that is located the outer tip of open plate.

The top end of the first inner side movable arm 18 is pivotally connected to a first movable arm bracket 20, the bottom end of the first inner side movable arm 18 is pivotally connected to a hinge plate pivot base 4c located at the front side of the inner end of the hinge plate, and the first movable arm bracket 20 is fixedly connected to the top wall of the baffle 1a (for example, may be fixedly connected by a screw). The top end of the second inner side movable arm 19 is pivotally connected to a second movable arm support 21, the bottom end of the second inner side movable arm 19 is pivotally connected to the opening plate pivot base 4c located at the rear side of the inner end of the opening plate, and the second movable arm support 21 is fixedly connected to the top wall of the baffle plate 1a (for example, may be fixedly connected by a screw).

It should be noted that, when the movable condensation plate is disposed to be inclined upward and the front end of the movable condensation plate is higher than the rear end, the total length of the first inner side movable arm 18 is smaller than the total length of the second inner side movable arm 19, or the vertical height of the opening plate pivot seat 4c located on the front side of the inner end of the opening plate is smaller than the vertical height of the opening plate pivot seat 4c located on the rear side of the inner end of the opening plate.

Through the arrangement of the structure, when the motor shaft of the motor 6 rotates, the outer side movable arm 17 can be driven to rotate upwards, and because the top end and the bottom end of the first inner side movable arm 18 and the second inner side movable arm 19 are both in pivot connection at the moment, the opening plate 4 can move inwards in the whole transverse direction while pivoting upwards. It can be seen that the pivot mechanism of the present embodiment can be applied to the aforementioned embodiment that the opening plate 4 shields the exposed portion of the air inlet.

In one embodiment, the motor 6 may be disposed on the top surface of the air guide plate 1a to prevent contamination by oil smoke, thereby extending the life span thereof. Generally, the fume collecting hood 1 further includes a top plate 1b, the top plate 1b and the air guide plate 1a are arranged along the upper and lower intervals, and an interlayer between the plates is formed in the upper and lower intervals, in this case, the motor 6 can be arranged in the interlayer between the plates.

In one embodiment, referring to fig. 14-21, the pivot mechanism may also be configured to: in the process of switching the opening plate 4 from the closed state to the open state, the outer end portion of the opening plate is driven to pivot downward relative to the inner end portion of the opening plate, so that the smoke collection chamber inlet 1c is enlarged and moved downward. Obviously, after the smoke collection cavity inlet 1c moves downwards, the flow path of the oil smoke in the external environment entering the smoke collection cavity inlet 1c can be effectively shortened, so that the oil smoke is sucked into the range hood more quickly, and the oil smoke capturing capability of the range hood 100 is enhanced.

In one embodiment, to prevent the turbulent flow phenomenon after the inlet 1c of the smoke collecting cavity is enlarged, a rectifying member for rectifying and stabilizing the pressure can be arranged in the smoke collecting cavity. For example, the rectification member may include a rectification plate 5, the rectification plate 5 being located in a laterally spaced area between the opening plate 4 and the condensation plate 3 and being capable of switching between the reset state and the rectification state.

In the reset state, the opening plate 4 is in the closed state, and the rectifying plate 5 and the opening plate 4 are vertically stacked. Under the rectification state, the cut-off board 4 is in the open mode, and guide plate 1a, cowling panel 5 and cut-off board 4 are along vertical interval in proper order, and collection flue chamber entry 1c is divided into along the inboard entry 1d of the collection flue chamber and the outside entry 1e of collection flue chamber that transversely separates inside and outside by cowling panel 5, is formed with inboard flue gas runner between cut-off board 4 and cowling panel 5, is formed with outside flue gas runner between cowling panel 5 and guide plate 1 a. At this time, part of the oil smoke in the external environment can flow into the smoke collection cavity through the inner side inlet 1d and the inner side smoke runner of the smoke collection cavity in sequence, and part of the oil smoke can flow into the smoke collection cavity through the outer side inlet 1e and the outer side smoke runner of the smoke collection cavity in sequence. Under the condition that the inlet 1c of the smoke collection cavity is enlarged, a plurality of smoke channels are divided in the smoke collection cavity through the rectifying plate 5, and the generation of turbulent flow can be effectively avoided.

In one embodiment, the current plate 5 includes a current plate inner end portion and a current plate outer end portion on both lateral sides, and in a current rectifying state, the current plate inner end portion is inclined upward with respect to the current plate outer end portion. It should be noted that, a rectifier plate displacement mechanism dedicated to driving the rectifier plate 5 to switch between the reset state and the rectifier state may be provided in the range hood 100, and the rectifier plate displacement mechanism and the pivot mechanism may operate independently without interfering with each other. Alternatively, the movement of the rectifying plate 5 and the movement of the opening plate 4 can be controlled by the same pivoting mechanism, and the movement of the rectifying plate 5 and the movement of the opening plate 4 do not interfere with each other. Alternatively, the same pivot mechanism may be used to control the displacement of the rectifying plate 5 and the opening plate 4 in a linkage manner, so as to simplify the structure of the pivot mechanism (the number of motors and transmission mechanisms can be reduced, etc.), thereby saving space and cost.

In one embodiment, when the rectifying plate 5 is switched from the reset state to the rectifying state, the pivot mechanism may be set to: the inner end part of the drive rectification plate pivots upward relative to the outer end part of the rectification plate, and the linkage control opening plate 4 is switched from a closed state to an open state (namely, the outer end part of the linkage control opening plate pivots downward relative to the inner end part of the opening plate).

In one embodiment, to realize the linkage control of the rectifying plate 5 and the opening plate 4, the inner end portion of the opening plate may be pivotally connected, and the pivoting mechanism may include a linkage driving arm 22, and the linkage driving arm 22 may include a driving arm inner end portion and a driving arm outer end portion on both lateral sides, and a driving arm pivoting portion 22a located between the driving arm inner end portion and the driving arm outer end portion. Wherein, the inner end of the transmission arm is pivotally connected with the inner end of the rectifying plate, the outer end of the transmission arm is pivotally connected with the outer end of the open-close plate, the transmission arm pivot part 22a is fixedly arranged, and the joint control transmission arm 22 can automatically pivot around the transmission arm pivot part 22 a.

Under the above structure, when the rectifying plate 5 is switched from the reset state to the rectifying state, the inner end portion of the rectifying plate pivots upward relative to the outer end portion of the rectifying plate, the inner end portion of the transmission arm of the joint transmission arm 22 pivots upward relative to the transmission arm pivot portion 22a under the driving of the inner end portion of the rectifying plate, and meanwhile, the outer end portion of the transmission arm of the joint transmission arm 22 pivots downward relative to the transmission arm pivot portion 22a, so that the outer end portion of the opening plate is driven to pivot downward relative to the inner end portion of the opening plate, that is, the joint control of the rectifying plate 5 and the opening plate 4 is realized.

In one embodiment, the laterally outer ends of the cold plate 3 are formed with cold plate pivot arms 3c that project laterally outward. At this time, the inner end portion of the opening plate and the driving arm pivot portion 22a may be pivotally coupled to the condensation plate pivot arm 3c at intervals of inside and outside in the lateral direction, thereby simplifying a fixed coupling structure of the inner end portion of the opening plate and the driving arm pivot portion 22 a.

In one embodiment, the inner end portion of the rectifying plate is formed with a rectifying plate pivot chute 5a extending in the lateral direction, the outer end portion of the opening plate is formed with an opening plate pivot chute 4f extending in the lateral direction, the inner end portion of the transmission arm is formed with a transmission arm inner pivot shaft, and the outer end portion of the transmission arm is formed with a transmission arm outer pivot shaft. Wherein, the transmission arm inner pivot shaft can be inserted into the rectifying plate pivot chute 5a in a sliding manner, and the transmission arm outer pivot shaft can be inserted into the opening plate pivot chute 4f in a sliding manner. When the rectifying plate 5 is switched between the reset state and the rectifying state, the transmission-arm inner pivot shaft can pivot and slide in the rectifying-plate pivot chute 5a, and the transmission-arm outer pivot shaft can pivot and slide in the opening-closing plate pivot chute 4 f. Through setting up the spout structure, can prevent that pivot mechanism card is dead to guarantee that cowling panel 5 can smoothly switch between reset state and rectification state.

In one embodiment, the cowling panel burring 5b and the opening panel burring 4g may be formed at the outer edge of the inner end portion of the cowling panel and the cowling panel pivot chute 5a and the opening panel pivot chute 4f may be formed at the outer edge of the outer end portion of the opening panel burring 5b and the opening panel burring 4g, respectively, thereby simplifying the structure and facilitating the process.

In one embodiment, the pivot mechanism comprises a motor 6 and a transmission arm assembly connected between the motor 6 and the rectifying plate 5, wherein the motor 6 can control the rotation of the rectifying plate 5 by controlling the transmission arm assembly. It should be noted that, because there are many lower structures of the transmission arm assembly, the lower structures cannot be exhaustive, and the alternative structures of the transmission arm assembly not mentioned in this document should be considered to be within the scope of the concept of the present exemplary embodiment.

In one embodiment, the actuator arm assembly may include a stationary arm and a moveable arm folding mechanism that is capable of folding open and closed. The top end of the fixed arm is fixedly arranged, the bottom end of the fixed arm is pivotally connected to the outer end portion of the rectifying plate, the movable arm folding mechanism comprises at least two movable arms which are pivotally connected, the top end of at least one movable arm folding mechanism is fixedly connected with a motor shaft of the motor 6, and the bottom end of the at least one movable arm folding mechanism is pivotally connected to the inner end portion of the rectifying plate. When the movable arm folding mechanism with the bottom end connected to the inner end part of the rectifying plate is folded or unfolded, the inner end part of the rectifying plate can be driven to pivot relative to the outer end part of the rectifying plate, so that the rectifying plate 5 is driven to be switched between a reset state and a rectifying state.

For example, referring to fig. 19 to 21, the movable arm folding mechanism includes a first front movable arm 10, a second front movable arm 11, a first rear movable arm 12, a second rear movable arm 13, and a front movable arm bracket 14, the fixed arms include a front fixed arm 15 and a rear fixed arm 16 that are arranged at a distance from each other in the front-rear direction, a plurality of commutator plate pivot bases 5c are formed on the top surface of the commutator plate 5, and the pivot mechanism further includes a motor bracket 7 for fixedly mounting the motor 6.

The bottom end of the first front movable arm 10 is pivotally connected to the top end of the second front movable arm 11, the top end of the first front movable arm 10 is pivotally connected to the front movable arm bracket 14, the front movable arm bracket 14 is fixedly connected to the top wall of the baffle 1a (for example, may be fixedly connected by a screw), and the bottom end of the second front movable arm 11 is pivotally connected to the baffle pivot base 5c located in front of the inner end of the baffle.

First rear side movable arm 12 and second rear side movable arm 13 are all set up at the rear side of first front side movable arm 10 and second front side movable arm 11 at the interval, the bottom of first rear side movable arm 12 and the top of second rear side movable arm 13 pivot connection, the top of first rear side movable arm 12 and the motor shaft fixed connection of motor 6 so that first rear side movable arm 12 can follow the motor shaft and rotate, motor support 7 is fixable connects on the roof of guide plate 1a (accessible screw fixed connection for example), the bottom of second rear side movable arm 13 and the cowling panel pivot seat 5c pivot connection of the rear side that is located cowling panel tip.

The front fixing arm 15 has a top end fixedly connected to the top wall of the baffle 1a (e.g., fixedly connected by a screw) and a bottom end pivotally connected to the baffle pivot base 5c located on the front side of the outer end of the baffle. The rear fixing arm 16 is fixedly connected at its top end to the top wall of the deflector 1a (e.g., by a screw) and at its bottom end to a deflector pivot base 5c located on the rear side of the outer end of the deflector.

It should be noted that, when the current plate 5 is disposed to be inclined upward and the front end of the current plate 5 is higher than the rear end, the total length of the first front movable arm 10 and the second front movable arm 11 is smaller than the total length of the first rear movable arm 12 and the second rear movable arm 13, and the total length of the front fixed arm 15 is smaller than the total length of the rear fixed arm 16.

By providing the above structure, when the motor shaft of the motor 6 rotates, the first rear movable arm 12 can be driven to rotate upward, and then the first rear movable arm 12 and the second rear movable arm 13 are driven to fold upward and the first front movable arm 10 and the second front movable arm 11 are driven to fold upward, so as to drive the inner end portion of the rectifying plate to pivot upward relative to the outer end portion of the rectifying plate. In addition to this structure, the joint control transmission arm 22 may be provided in the pivot mechanism to control the displacement of the opening plate 4 in a linked manner.

In one embodiment, similar to the previous description, the motor 6 may be disposed on the top surface of the air guide plate 1a to prevent contamination by oil smoke, thereby prolonging the service life thereof. Generally, the motor 6 may be disposed in an inter-plate interlayer between the ceiling plate 1b and the deflector plate 1a of the smoke collecting hood 1.

For the range hood 100 in the present exemplary embodiment, the smoke collection chamber inlet 1c may include a first smoke collection chamber inlet and a second smoke collection chamber inlet formed at both lateral sides of the condensation plate 3, respectively, the opening plate 4 may include a first opening plate at the first smoke collection chamber inlet and a second opening plate at the second smoke collection chamber inlet, the displacement mechanism may include a first displacement mechanism for driving the first opening plate to move and a second displacement mechanism for driving the second opening plate to move, and the first displacement mechanism and the second displacement mechanism may be configured to operate independently of each other.

In one embodiment, when the displacement mechanism comprises a pivot mechanism, the pivot mechanism may comprise a first pivot mechanism for driving the first opening plate to move and a second pivot mechanism for driving the second opening plate to move, and the first pivot mechanism and the second pivot mechanism may be arranged to operate independently of each other.

In an embodiment, when the extractor hood 100 is provided with the fairing plate 5 and the displacement mechanism comprises a pivot mechanism, the fairing plate 5 may comprise a first fairing plate and a second fairing plate, the pivot mechanism may comprise a first pivot mechanism and a second pivot mechanism, the first pivot mechanism is used for controlling the first opening plate and the first fairing plate to pivot in a linkage manner, the second pivot mechanism is used for controlling the second opening plate and the second fairing plate to pivot in a linkage manner, and the first pivot mechanism and the second pivot mechanism may be set to operate independently of each other.

Under the condition that the first displacement mechanism and the second displacement mechanism can operate independently, when the oil smoke generated at the two transverse sides of the cooking bench is less, referring to fig. 1, the range hood 100 can efficiently smoke while keeping a common smoking state. When the amount of oil smoke generated from one side of the cooking bench is large and the amount of oil smoke generated from the other side is small, referring to fig. 2, the opening plate 4 (one of the first opening plate or the second opening plate) of one side of the range hood 100 is switched to the open state, and the opening plate 4 (the other of the first opening plate or the second opening plate) of the other side maintains the closed state, so that the smoking speed of one side can be effectively increased, and the smoke can be more specifically smoked. When there is much oil smoke generated at both lateral sides of the cooking bench, referring to fig. 3, both the first opening plate and the second opening plate of the range hood 100 are switched to the open state, thereby increasing the smoking speed at both sides.

It should be noted that the timing of switching the opening and closing plate 4 between the closed state and the open state is not necessarily determined only based on the amount of the oil smoke in the external environment, but may also be determined based on different factors such as humidity, temperature, viscosity, flow rate, and type of the oil smoke, and the present exemplary embodiment is not limited thereto.

In an embodiment, the range hood 100 further includes a smoke probe 9 for detecting a situation of smoke in the smoke collection cavity, the smoke probe 9 may be disposed above the opening plate 4 (e.g., disposed on a top surface of the opening plate 4 or a top surface of the current plate 5), and the range hood 100 is configured to control the displacement mechanism to operate accordingly according to the situation of smoke detected by the smoke probe 9. When the displacement mechanism includes a pivot mechanism, the range hood 100 is configured to control the operation of the pivot mechanism accordingly according to the oil smoke condition detected by the oil smoke probe 9. The oil smoke condition can include various factors such as the humidity, the temperature, the viscosity, the flow speed and the type of the oil smoke.

Specifically, the range hood 100 further includes a frame 23 located above the smoke collecting cover 1, a main smoke flow channel formed in the frame 23, and a fan system located in the main smoke flow channel, wherein the smoke collecting cavity, an air inlet of a top wall of the smoke collecting cavity (i.e., a top wall of the guide plate 1a) and the main smoke flow channel are sequentially communicated from bottom to top so as to guide the oil smoke in the external environment into the range hood.

The above describes in detail optional implementation manners of embodiments of the present invention with reference to the accompanying drawings, however, the embodiments of the present invention are not limited to the details in the above implementation manners, and in the technical concept scope of the embodiments of the present invention, it is possible to perform various simple modifications on the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that, in the above-mentioned embodiments, the various technical features described in the above-mentioned embodiments can be combined in any suitable way without contradiction, and in order to avoid unnecessary repetition, the embodiments of the present invention do not separately describe various possible combinations.

In addition, various different implementation manners of the embodiments of the present invention can be combined arbitrarily, and as long as it does not violate the idea of the embodiments of the present invention, it should be considered as the disclosure of the embodiments of the present invention.

Claims

1. A range hood, characterized in that the range hood (100) comprises:

the bottom of the smoke collecting cover (1) is provided with a smoke collecting cavity;

the condensation plate (3) is arranged in the smoke collection cavity, the condensation plate (3) and the transverse inner side wall of the smoke collection cavity are arranged at intervals, and a smoke collection cavity inlet (1c) is formed in a transverse interval area; and

the opening plate module comprises a displacement mechanism and an opening plate (4) arranged at the smoke collection cavity inlet (1 c);

the range hood (100) can be switched between a common smoking state and a powerful smoking state, the opening plate (4) and the condensation plate (3) are transversely butted in the common smoking state, and the displacement mechanism drives the opening plate (4) to move towards the direction of expanding the smoke collection cavity inlet (1c) in the process of switching to the powerful smoking state.

2. The range hood according to claim 1, wherein the displacement mechanism comprises a pivoting mechanism, the open plate (4) comprises an inner end of the open plate and an outer end of the open plate on both sides in the transverse direction, the inner end of the open plate is butted with the condensation plate (3) in the transverse direction in the ordinary smoking state, and the pivoting mechanism drives the inner end of the open plate to pivot upwards relative to the outer end of the open plate in the process of switching to the powerful smoking state.

3. The range hood according to claim 2, wherein in the powerful smoking state, the smoke collection cavity inlet (1c) is divided into a smoke collection cavity inner side inlet (1d) and a smoke collection cavity outer side inlet (1e) which are separated from each other along the transverse direction by the open-close plate, an inner side smoke flow channel is formed in the transverse separation region between the open-close plate (4) and the condensation plate (3), an outer side smoke flow channel is formed in the transverse separation region between the open-close plate (4) and the inner wall of the smoke collection cavity, the smoke collection cavity inner side inlet (1d), the inner side smoke flow channel and the smoke collection cavity are sequentially communicated, and the smoke collection cavity outer side inlet (1e), the outer side smoke flow channel and the smoke collection cavity are sequentially communicated.

4. The range hood according to claim 2, wherein the range hood (100) further comprises a lifting mechanism for driving the condensation plate (3) to move up and down, and the lifting mechanism drives the condensation plate (3) to move down in the process of switching from the ordinary smoking state to the powerful smoking state.

5. The range hood according to claim 2, wherein the pivot mechanism comprises a motor (6) and a transmission arm assembly connected between the motor (6) and the opening plate (4), and the motor (6) controls the opening plate (4) to pivot by controlling the transmission arm assembly in a transmission manner.

6. The range hood according to claim 5, wherein the driving arm assembly comprises a fixed arm and a movable arm folding mechanism capable of being folded and unfolded, the fixed arm is fixedly arranged at the top end and pivotally connected to the outer end of the opening plate at the bottom end, the movable arm folding mechanism comprises at least two movable arms which are pivotally connected, and the top end of at least one movable arm folding mechanism is fixedly connected with the motor shaft of the motor (6) and pivotally connected to the inner end of the opening plate at the bottom end.

7. The range hood according to claim 5, wherein the transmission arm assembly comprises an inner movable arm and an outer movable arm (17), the bottom end of the inner movable arm is pivotally connected to the inner end of the open plate, the bottom end of the outer movable arm (17) is pivotally connected to the outer end of the open plate, one of the top end of the inner movable arm and the top end of the outer movable arm (17) is fixedly connected to the motor shaft of the motor (6) and the other one is fixed through pivotal connection.

8. The range hood according to claim 5, wherein the fume collecting hood (1) comprises a top plate (1b) and a guide plate (1a) which are arranged at intervals up and down, and an inter-plate interlayer formed in the upper and lower interval areas of the top plate (1b) and the guide plate (1a), the fume collecting cavity is positioned below the guide plate (1a), and the motor (6) is arranged in the inter-plate interlayer.

9. The range hood according to claim 1, wherein the smoke collection chamber inlet (1c) comprises a first smoke collection chamber inlet and a second smoke collection chamber inlet respectively formed at both lateral sides of the condensation plate (3), the opening plate comprises a first opening plate located at the first smoke collection chamber inlet and a second opening plate located at the second smoke collection chamber inlet, the displacement mechanism comprises a first displacement mechanism for driving the first opening plate to move and a second displacement mechanism for driving the second opening plate to move, and the first displacement mechanism and the second displacement mechanism operate independently of each other.

10. The range hood according to claim 1, wherein the range hood (100) further comprises a smoke probe (9) for detecting a smoke condition in the smoke collection cavity, and the range hood (100) is configured to control the displacement mechanism to operate according to the smoke condition detected by the smoke probe (9).

11. The range hood according to any one of claims 1 to 10, wherein the range hood (100) further comprises a frame (23) located above the fume collecting hood (1), a main fume flow channel formed in the frame (23), and a fan system located in the main fume flow channel, wherein an air inlet is formed in a top wall of the fume collecting cavity, and the fume collecting cavity, the air inlet and the main fume flow channel are sequentially communicated from bottom to top.