CN217441747U - Smoke exhaust ventilator - Google Patents

Abstract

The utility model relates to a range hood, include: the shell is provided with an air inlet; the smoke baffle is arranged at the air inlet and can at least reciprocate between a first position for closing at least partial area of the air inlet and a second position for opening the air inlet; the driving mechanism is arranged on the shell, comprises a connecting frame connected with the smoke baffle and can drive the smoke baffle to move between a first position and a second position in a reciprocating way; the shell is also provided with a position yielding port for the connecting frame to pass through and allowing the connecting frame to reciprocate between a first position and a second position along with the smoke baffle plate; the sealing plate assembly comprises a partition plate arranged at the yielding port, and the partition plate can move to a second position state at the smoke baffle plate to close the yielding port. The baffle can shelter from the mouth of stepping down that supplies link reciprocating motion, avoids the oil smoke to cause the pollution to actuating mechanism's relevant part in getting down the space environment that the mouth entered into actuating mechanism place, has improved actuating mechanism's life.

Description

Smoke exhaust ventilator

Technical Field

The utility model relates to a kitchen appliance technical field especially relates to a range hood.

Background

The range hood is a kitchen appliance for purifying the kitchen environment. The range hood of the top suction type utilizes the principle that hot gas rises to suck and discharge the naturally rising oil smoke generated during cooking; the side-draft range hood is far away by vortex wind pressure, most of the oil smoke close to the cooking bench is absorbed in an arc form, the adverse effect on the human health can be reduced, and the suction effect of the power source cannot be reduced basically because the power source is close to the cooking bench.

The air intake department of range hood is equipped with the cigarette board of keeping off usually, and conventional cigarette board of keeping off can only carry out simple upset motion usually for the operating position who keeps off the cigarette board is fixed, can't adjust along with the size of oil smoke volume, is unfavorable for range hood and is applicable to different operating modes. And when user unilateral culinary art, can't effectively utilize the range hood amount of wind to carry out the effective suction of oil smoke, lead to the lampblack absorber during operation probably to have the risk of running the cigarette.

In order to solve the above technical problems, for example, the chinese utility model patent with application number CN202120936792.9 (No. CN215570686U) discloses a range hood, which comprises a housing and a panel arranged at the front side of the housing, the panel is provided with an air inlet, the range hood further comprises a smoke baffle assembly capable of turning open or close the air inlet, the smoke baffle assembly comprises a first smoke baffle and a second smoke baffle arranged side by side at the left and right of the air inlet, the first smoke baffle and the second smoke baffle can be in a first position for closing the corresponding part of the air inlet and a second position for turning open the corresponding part of the air inlet, when the first smoke baffle is at the second position, the first smoke baffle can move longitudinally relative to the corresponding part of the air inlet, when the second smoke baffle is at the second position, the second smoke baffle can move longitudinally relative to the corresponding part of the air inlet, wherein, the longitudinal movement of the first smoke baffle and the second smoke baffle is driven by the corresponding driving mechanism.

For another example, the chinese patent with application number of cn201910567574.x (with publication number of CN110375353B) discloses a range hood suitable for a dual range, which includes a housing, a panel disposed at the front side of the housing, the panel being provided with an air inlet, and a smoke gathering mechanism, the smoke gathering mechanism including a first movable baffle disposed at the left side of the air inlet and capable of moving in the left-right direction, and a second movable baffle disposed at the right side of the air inlet and capable of moving in the left-right direction, the left-right movement of the two movable baffles being driven by corresponding driving mechanisms. Through set up mobilizable movable baffle in air intake department, can wholly change the position of air intake in order to do benefit to the smoking, can improve again and hold together the cigarette ability, prevent to run the cigarette, and then improve the oil absorption cigarette effect.

No matter in the above-mentioned patent keep off the longitudinal movement of cigarette board along the air intake or at the lateral shifting of left right direction, all be driven by actuating mechanism and make linear motion, then need correspond on range hood's casing (or panel) and set up a bar that supplies actuating mechanism's link reciprocating motion and let a mouthful (or bar gap), this bar lets the existence of a mouthful lead to the oil smoke can enter into actuating mechanism place spatial region, long-term use can lead to actuating mechanism to receive the blocking sense of oil smoke pollution production motion, the service life is shortened, the maintenance is frequent relatively.

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

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide one kind and can avoid a large amount of oil smoke to enter into actuating mechanism place space environment and construct the range hood of pollution to the driving machine.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a range hood, comprising:

the shell is provided with an air inlet;

the smoke baffle is arranged at the air inlet of the shell and can at least reciprocate between a first position for closing at least partial area of the air inlet and a second position for opening the air inlet;

the driving mechanism is arranged on the shell, comprises a connecting frame connected with the smoke baffle and can drive the smoke baffle to move between the first position and the second position in a reciprocating manner;

the shell is also provided with a position-giving opening for the connecting frame to pass through and allowing the connecting frame to reciprocate between the first position and the second position along with the smoke baffle plate;

the sealing plate assembly comprises a partition plate arranged at the yielding port, and the partition plate can move to a second position state to close the yielding port.

In general, the partition plate can be manually adjusted to open or close the above-mentioned relief opening, and in order to realize the automatic opening or closing of the partition plate, the sealing plate assembly further comprises a moving mechanism connected with the partition plate and used for driving the partition plate to open or close the relief opening.

The movement mechanism for driving the partition plate to open or close can be driven by an independent driving part, in order to save cost without additionally adding a driving part, one position between the first position and the second position on the moving path of the smoke baffle plate is defined as a third position, wherein the effective air inlet area of the air inlet is gradually increased in the process that the smoke baffle plate moves from the first position to the second position;

the movement mechanism is linked with the driving mechanism or the smoke baffle plate, and at least can drive the partition plate to close the position-giving opening when the smoke baffle plate moves from the third position to the second position, drive the partition plate to open the position-giving opening when the smoke baffle plate moves from the second position to the third position, and keep the partition plate in a state of opening the position-giving opening when the smoke baffle plate moves from the third position to the first position.

The first position may be an initial position where the smoke barrier completely closes the air inlet, or a position where a partial area of the air inlet is blocked. The second position may be an end position where the smoke barrier completely opens the air inlet, or another position where a partial area of the air inlet is blocked, where the third position is adjacent to the second position.

When the smoke baffle moves from the first position to the third position, the partition is in a state of opening the position-giving opening, so that the problem of interference between the partition and a connecting frame on the smoke baffle is solved. When the smoke baffle continues to move from the third position to the second position, the smoke baffle can be linked with the motion mechanism, the motion mechanism drives the partition plate to close (most of) the yielding port, and a large amount of oil smoke is prevented from entering a space environment where the drive mechanism is located through the yielding port. When the smoke baffle moves from the second position to the third position, the partition plate is driven by the motion mechanism to gradually open the position-giving opening and keep in the open state, so that the partition plate can not interfere with the connecting frame on the smoke baffle when the smoke baffle moves from the third position to the first position.

In order to make the partition plate open and close the action of the position-giving opening interfere with the movement action of the smoke baffle or other parts of the oil smoke suction, the partition plate preferably adopts a deflection mode to open and close the position-giving opening, wherein, the motion mechanism can adopt various prior arts which can convert the linear movement of the smoke baffle into the turnover movement of the partition plate, and in order to be better matched with the linear movement of the smoke baffle, the motion mechanism comprises:

the mounting seat is fixed relative to the machine shell;

the rotating column is connected with the partition plate and is rotatably arranged on the mounting seat in a manner of rotating around the axis of the rotating column, a limiting pin protruding outwards along the radial direction is further arranged on the outer peripheral wall of the rotating column, and the axial direction of the rotating column is parallel to the moving direction of the smoke baffle plate;

the steering sleeve is sleeved outside the rotating column and can be driven by the connecting frame to slide along the axial direction of the rotating column in the process that the smoke baffle plate moves from the third position to the second position, and a sliding groove which is spirally arranged along the axial direction and is used for the limiting pin to slide and restrict is further arranged on the steering sleeve;

the elastic piece acts on the steering sleeve to allow the steering sleeve to overcome the elastic force of the elastic piece to move along the axial direction of the rotating column when the smoke baffle moves from the third position to the second position and to enable the steering sleeve to reset reversely when the smoke baffle moves from the first position to the third position.

In order to enable all components such as the rotating column, the steering sleeve and the mounting seat to be matched together to form a modular structure, and further to be conveniently mounted on the range hood, the mounting seat is provided with a mounting groove, the rotating column is arranged in the mounting groove, two ends of the rotating column are rotationally constrained on two opposite side walls of the mounting groove, and one end of the rotating column is exposed out of the mounting seat and is used for being connected with the partition plate.

In order to limit the steering sleeve to rotate relative to the rotating column in the circumferential direction, the steering sleeve is also arranged in the mounting groove, the cross section of the outer peripheral wall of the steering sleeve is at least partially non-circular, and the inner wall of the mounting groove is matched with the outer peripheral wall of the steering sleeve so as to limit the steering sleeve to rotate relative to the mounting seat in the circumferential direction. It is conceivable that the steering sleeve and the mounting groove of the mounting seat are limited in the circumferential direction by the aid of the sliding limiting fit of the convex ribs and the grooves.

The elastic piece can adopt various prior art, can include various elastic elements such as pressure spring, torsional spring, reed, nevertheless for the foretell rotation post of cooperation better, the elastic piece is established for the cover reset spring on the rotation post, turn to the cover and have the confession the hole that the rotation post passed to it is greater than to form the bore at the tip the spring locating hole of hole, this spring locating hole with turn to form spacing step between the hole of cover, reset spring's first end accept spring locating hole in and with spacing step offsets, the second end with the inner wall of mounting groove offsets.

In order to better settle actuating mechanism's relevant parts on the casing, the casing have with the air inlet wind channel of air intake intercommunication and with the independent chamber that holds in air inlet wind channel looks, hold and seted up on the wall in chamber the mouth of stepping down, actuating mechanism's at least part is located hold in the chamber, the link warp let the mouth stretch out hold outside the chamber and with the fender cigarette board be connected.

In order to form the aforesaid chamber that holds on the basis of the structure of simplifying the casing, the casing includes the inner shell, encloses to establish shell outside the inner shell and locate the bottom of inner shell and the support frame of the bottom department of shell, the inner space of inner shell prescribes a limit to the air inlet duct, shell, inner shell and the corresponding part of support frame prescribes a limit to jointly the chamber that holds, have on the support frame with the air intake of air inlet duct intercommunication and with hold the position mouth that lets that the chamber communicates.

Under the general condition, two kitchen range holes of arranging about having on the top of a kitchen range, in order to with about two kitchen range hole's culinary art condition looks adaptations, can reduce the oil smoke to escape pertinence ground, it has two to keep off the cigarette board to arrange in proper order along controlling the direction, two it homoenergetic to keep off the cigarette board and move about actuating mechanism drives, let the position mouth for controlling the bar mouth that extends the arrangement.

The two smoke baffles can be driven by two driving mechanisms to independently move left and right, and in order to reduce the number of parts of the driving mechanisms and save cost, the two smoke baffles are driven by the same driving mechanism to mutually approach or separate in the left and right directions.

In order to drive two cigarette blocking plates to move synchronously, the driving mechanism comprises:

the output shaft of the driving motor is connected with a driving gear;

the transmission rack assembly comprises two transmission racks, the two transmission racks can be arranged on the shell in a reciprocating sliding mode along the left-right direction, the two transmission racks extend in the left-right direction, and the two transmission racks are meshed with the driving gear so as to move towards or away from the driving gear under the driving of the driving gear;

the two connecting frames are respectively and correspondingly connected with the two transmission racks.

In order to slidably arrange the transmission rack on the machine shell, two slide rails which extend left and right are arranged on the machine shell, and the two transmission racks are respectively connected on the two slide rails in a sliding manner.

In order to ensure the stability of the left-right moving process of the smoke baffle, each smoke baffle is connected with two connecting frames which are arranged at intervals from front to back, the transmission rack assemblies are also provided with two groups which are arranged from front to back, the two connecting frames on each smoke baffle are correspondingly connected with the two groups of transmission rack assemblies, and the two groups of transmission rack assemblies are driven by the same driving motor to synchronously move.

Compared with the prior art, the utility model has the advantages that: after the air inlet is opened by the smoke baffle, the partition plate of the sealing plate assembly can shield the yielding port for the connecting frame to move in a reciprocating mode, so that the situation that oil smoke enters the space environment where the driving mechanism is located through the yielding port to pollute related parts of the driving mechanism is effectively avoided, and the service life of the driving mechanism is prolonged. In the preferred scheme, the action process of opening or closing the position-giving opening of the partition plate is linked with the movement of the smoke baffle plate or the action of the driving mechanism, so that the driving mechanism for driving the smoke baffle plate to act can provide power to drive the partition plate to close the position-giving opening, the number of driving mechanisms of the whole range hood is reduced, and the production cost is saved.

Drawings

Fig. 1 is a schematic perspective view of a range hood according to an embodiment of the present invention;

fig. 2 is an exploded view of the extractor hood according to the embodiment of the present invention with the outer shell and the inner shell separated;

fig. 3 is a vertical sectional view of the range hood according to the embodiment of the present invention;

FIG. 4 is a schematic structural view of the partition plate of FIG. 3 in a state of closing the relief opening;

FIG. 5 is an enlarged view taken at A in FIG. 2;

FIG. 6 is a schematic structural view of the partition board in FIG. 5 in a state of closing the relief opening;

fig. 7 is a schematic perspective view of a sealing plate assembly according to an embodiment of the present invention, wherein a steering sleeve is in a state of being pressed by a connecting frame;

fig. 8 is a schematic perspective view of a sealing plate assembly according to an embodiment of the present invention, wherein the steering sleeve is in a state of not being pressed by the connecting frame;

fig. 9 is an exploded view of a seal plate assembly according to an embodiment of the present invention;

fig. 10 is a schematic perspective view of the range hood of the embodiment of the present invention without the related parts of the housing, showing the driving mechanism;

FIG. 11 is a schematic perspective view of the structure of FIG. 10 from another angle;

fig. 12 is a schematic perspective view of a supporting frame according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", and the like, are used in the specification and claims of the present invention to describe various example structural parts and elements of the present invention, but these terms are used herein only for convenience of description and are determined based on example orientations shown in the drawings. Because the disclosed embodiments may be arranged in different orientations, these directional terms are for illustrative purposes only and should not be construed as limiting, and for example, "upper" and "lower" are not necessarily limited to orientations opposite or consistent with the direction of gravity.

Referring to fig. 1 to 12, a range hood includes a casing 10, a fan system, a smoke barrier 20 and a sealing plate assembly 40, wherein the fan system is disposed in the casing 10 for providing a negative pressure for sucking and exhausting oil smoke. The bottom of the casing 10 has an air inlet 131, and the smoke barrier 20 is disposed at the air inlet 131 of the casing 10 and can be driven by the driving mechanism 30 to reciprocate in the left-right direction, thereby opening or closing the air inlet 131.

Referring to fig. 1 to 3, the cabinet 10 includes an inner casing 11, an outer casing 12 enclosed outside the inner casing 11, and a support frame 13 provided at the bottom of the inner casing 11 and the bottom of the outer casing 12. The inner casing 11 is a vertically extending frame plate structure, and its inner space defines a vertically extending air inlet duct 14. The front bottom and the rear bottom of the inner shell 11 are both partially recessed to form a recessed area. The supporting frame 13 is a plate-shaped structure with a concave middle part, covers the bottom opening of the air inlet duct 14, and is correspondingly provided with an air inlet 131 communicated with the air inlet duct 14, and the air inlet 131 is also provided with an oil screen 16 for filtering oil smoke. The air inlet 131 on the supporting frame 13 inclines from top to bottom, and the oil screen 16 arranged at the air inlet 131 also inclines from top to bottom. The front portion of the support plate located in front of the air inlet 131, the recessed area of the front side of the inner casing 11 and the corresponding portion of the outer casing 12 together define an accommodating chamber 15 independent of the air inlet duct 14, and similarly, the rear portion of the support plate located behind the air inlet 131, the recessed area of the rear side of the inner casing 11 and the corresponding portion of the outer casing 12 together define an accommodating chamber 15 independent of the air inlet duct 14. The receiving cavity 15 may be used to accommodate components such as a gear rack assembly of the driving mechanism 30 and a moving mechanism of the sealing plate assembly 40. The middle part of the support frame 13 is concave upwards to form a smoke-gathering area, so that the problem of escape in the rising process of oil smoke is reduced.

Referring to fig. 12, the front side region or the rear side region of the supporting frame 13 is further provided with a yielding port 132 communicated with the accommodating cavity 15, wherein the yielding port 132 is a strip-shaped port extending left and right, and the connecting frame 34 connected with the smoke baffle 20 can reciprocate along the strip-shaped port.

The outer casing 12 in this embodiment is also a vertically extending frame plate structure, and is attached to other parts outside the inner concave area on the inner casing 11, so that the overall aesthetic property of the range hood is ensured. The rear side of the bottom of the casing 10 is also provided with an oil cup 17 extending left and right for receiving oil flowing down from the casing 10 or the oil screen 16.

The smoke barrier 20 of the present embodiment has two and is arranged in order in the left-right direction. The two smoke baffles 20 can move left and right under the drive of the connecting frame 34 of the driving mechanism 30. The left and right movement of the two smoke baffles 20 can be independent, i.e. driven by two driving members and can move left and right independently, or can be driven by the same driving member and move synchronously, such as approaching each other or moving away from each other. When the range hood is in a shutdown state, the two smoke baffles 20 are spliced with each other to shield the air inlet 131 of the drop chassis 10; in the operating state of the range hood, the smoke barrier 20 on the left side moves leftwards, the smoke barrier 20 on the right side moves rightwards, the air inlet 131 of the casing 10 is opened, and meanwhile, the negative pressure area extends in the left-right direction after the smoke barriers 20 are unfolded, so that the escape of oil smoke from the left side and the right side is reduced.

Referring to fig. 3 and 10, the driving mechanism 30 is disposed on the casing 10, and specifically includes a driving motor 31, a transmission shaft 36, a transmission rack assembly, and a connecting frame 34.

There are two sets of driving rack components, which are respectively arranged in the containing cavities 15 at the front and the rear sides of the machine shell 10. Each driving rack assembly comprises two driving racks 33, and the two driving racks 33 are arranged in a left-right direction in an extending manner and are arranged at intervals from top to bottom. Correspondingly, the inner shell 11 of the casing 10 further has slide rails 35 extending left and right, and there are two slide rails 35, which are respectively in one-to-one correspondence with the two transmission racks 33. The two transmission racks 33 can slide in a reciprocating manner in the left-right direction through the corresponding slide rails 35. A driving gear 32 is arranged between the two transmission racks 33 and meshed with the two transmission racks, and the driving gear 32 can be driven by the driving motor 31 to rotate. The two transmission racks 33 are moved toward or away from each other by the drive gear 32.

The two transmission racks 33 of each set of transmission rack assemblies are connected with the left and right smoke baffle plates 20 through the vertically extending connecting frame 34 (passing through the above-mentioned position-giving opening 132). In this embodiment, each smoke barrier 20 is connected with two connecting frames 34 arranged at intervals in the front-back direction, and the two connecting frames 34 on each smoke barrier 20 are correspondingly connected with two sets of driving rack assemblies arranged in the front-back direction.

The two sets of gear assemblies of this embodiment are driven by the same driving motor 31 to act synchronously. The driving motor 31 is disposed on the inner wall of the inner casing 11 of the housing 10 and covered by a protective cover. The transmission shaft 36 extends forwards and backwards and is in transmission connection with the driving motor 31. The front end and the rear end of the transmission shaft 36 are coaxially connected with a driving gear 32, and the two driving gears 32 are meshed with the transmission racks 33 of the two transmission rack components arranged in the front and the rear. Under the drive of the driving motor 31, the transmission shaft 36 rotates, thereby driving the front and rear sets of transmission rack assemblies to move, and further driving the smoke barrier 20 to move left and right through the connecting frame 34.

The sealing plate assembly 40 is disposed in the accommodating chamber 15, and specifically includes a partition plate 41 and a moving mechanism. The partition plate 41 is disposed at the position-giving opening 132 and can be driven by the moving mechanism to turn over, so as to open or close the position-giving opening 132. Wherein, the motion mechanism is linked with the connecting frame 34 of the driving mechanism 30 for driving the smoke baffle 20 to move, so that the partition plate 41 can be driven to turn over when the smoke baffle 20 moves left and right.

Referring to fig. 7-9, the kinematic mechanism includes a mount 421, a rotation post 422, a steering sleeve 423, and an elastic member 424.

The mounting seat 421 is fixed on the casing 10, and has a mounting groove 4210 extending left and right. The rotating column 422 is disposed in the mounting groove 4210 of the mounting seat 421, and specifically, both ends of the rotating column 422 are rotatably constrained on two opposite side walls of the mounting groove 4210. A first end of the rotation post 422 is exposed out of the mounting seat 421 for connection with an end of the partition plate 41. In addition, the first end of the rotating column 422 has a shoulder for abutting against the mounting seat 421. The second end of the rotating column 422 is also exposed out of the mounting seat 421, and is limited in the axial direction by the radially inserted pin 425. The outer peripheral wall of the rotary cylinder 422 is also provided with a stopper pin 4220 projecting radially outward.

The steering sleeve 423 is also disposed in the mounting groove 4210 of the mounting seat 421 and is sleeved outside the rotating column 422. The cross section of the outer peripheral wall of the steering sleeve 423 is at least partially non-circular, and the inner wall of the mounting groove 4210 of the mounting seat 421 is matched with the outer peripheral wall of the steering sleeve 423, so that the steering sleeve 423 is limited to rotate in the circumferential direction relative to the mounting seat 421, and only the steering sleeve 423 is allowed to reciprocate along the axial direction of the rotating column 422. The steering sleeve 423 is further provided with a sliding groove 4232 which is spirally arranged along the axial direction, and after the rotating column 422 is installed on the steering sleeve 423, a limit pin 4220 on the rotating column 422 is limited in the sliding groove 4232. When the steering sleeve 423 moves left and right, the steering sleeve 423 cannot rotate in the circumferential direction, so that the rotating column 422 rotates under the sliding fit action of the sliding groove 4232 of the steering sleeve 423 and the limit pin 4220 of the rotating column 422, so as to drive the partition plate 41 connected with the rotating column to deflect and open or close the position-giving opening 132.

The elastic member 424 of this embodiment is preferably a return spring fitted over the rotating post 422. Specifically, the steering sleeve 423 is provided with an inner hole 4230 for the rotation column 422 to pass through, the end part of the steering sleeve 423 is also provided with a spring positioning hole 4231 with a diameter larger than that of the inner hole 4230, and a limit step is formed between the spring positioning hole 4231 and the inner hole 4230 of the steering sleeve 423. The first end of the return spring is accommodated in the spring positioning hole 4231 and abuts against the limit step, and the second end of the return spring abuts against the inner wall of the mounting groove 4210. Under the action of the return spring, the steering sleeve 423 always has a tendency to move where the first end of the rotating post 422 is located.

The turning sleeve 423 further has a blocking portion 4233 extending outward, the blocking portion 4233 is located in a path of the connecting frame 34 moving left and right, specifically, when the smoke barrier 20 opens the air inlet 131 to a certain extent, the connecting frame 34 connected to the smoke barrier 20 will abut against the blocking portion 4233 of the turning sleeve 423, and when the smoke barrier 20 continues to open the air inlet 131 (i.e. continues to move left or right), the connecting frame 34 will drive the turning sleeve 423 to move to the position of the second end of the turning column 422 along the axial direction of the turning column 422 against the elastic force of the elastic member 424.

For one of the partition plates 41, one end of the partition plate 41 may be connected to the above-mentioned moving mechanism, and the other end of the partition plate 41 may be connected to a conventional rotating shaft (mainly serving as an auxiliary support and allowing the partition plate 41 to freely deflect), so that the purpose of deflecting the partition plate 41 can be achieved.

For convenience of describing the operation process of the movement mechanism of the sealing member assembly in conjunction with the driving mechanism 30 of the smoke barrier 20, a position between the first position and the second position on the moving path of the smoke barrier 20 is defined as a third position (shown in fig. 5), wherein the effective air intake area of the air inlet 131 is gradually increased during the movement of the smoke barrier 20 from the first position to the second position. The first position may be a starting position where the smoke barrier 20 completely closes the air inlet 131, or a position where a partial area of the air inlet 131 is blocked. The second position may be an end position (as shown in fig. 6) where the smoke barrier 20 completely opens the air inlet 131, or another position where a partial area of the air inlet 131 is blocked. The third position is adjacent to the second position, that is, the stroke of the smoke barrier 20 moving from the third position to the second position is relatively short, so that the length of the avoiding opening 132 which cannot be blocked by the partition plate 41 is also relatively short (that is, only the end area of the avoiding opening 132 cannot be blocked by the partition plate 41), which effectively blocks the smoke from entering the accommodating chamber 15.

When the cigarette blocking plate 20 moves from the first position to the third position, the partition plate 41 is in a state of opening the allowance port 132, so that the partition plate 41 does not interfere with the connecting frame 34 on the cigarette blocking plate 20, and the connecting frame 34 of the cigarette blocking plate 20 can move freely along the allowance port 132 (i.e. the cigarette blocking plate 20 can move left and right). When the smoke baffle 20 is located at the third position, the connecting frame 34 on the smoke baffle 20 is just abutted against the blocking portion 4233 of the steering sleeve 423, and when the smoke baffle 20 moves continuously from the third position to the second position, the connecting frame 34 applies pressure to the blocking portion 4233 of the steering sleeve 423 to enable the steering sleeve 423 to overcome the elastic force of the elastic piece 424 and move to the position of the second end of the rotating column 422 along the axial direction of the rotating column 422, in the process, the rotating column 422 rotates to drive the partition plate 41 to deflect, so that (most of) the area of the position-giving opening 132 is closed, and therefore, a large amount of oil smoke is prevented from entering the accommodating cavity 15 through the position-giving opening 132 and polluting the moving mechanism, the driving mechanism 30 and other components in the accommodating cavity 15.

When the smoke barrier 20 needs to close the air inlet 131, the smoke barrier 20 moves from the second position to the third position, the connecting frame 34 gradually releases the pressure on the blocking portion 4233 of the turning sleeve 423, the turning sleeve 423 is reversely reset (i.e., moves towards the position of the first end of the turning post 422) under the elastic force of the elastic member 424, the turning post 422 simultaneously rotates reversely, the partition plate 41 also deflects and gradually opens the concession port 132, and when the smoke barrier 20 moves to the third position, the concession port 132 is completely opened and is kept in the opened state. The partition 41 also does not interfere with the attachment bracket 34 on the smoke barrier 20 during movement of the smoke barrier 20 from the third position to the first position because the seat port 132 is maintained in the open position.

Claims (14)

1. A range hood, comprising:

the air conditioner comprises a shell (10) which is provided with an air inlet (131);

the smoke baffle plate (20) is arranged at the air inlet (131) of the shell (10) and can at least reciprocate between a first position for closing at least partial area of the air inlet (131) and a second position for opening the air inlet (131);

the driving mechanism (30) is arranged on the shell (10), comprises a connecting frame (34) connected with the smoke baffle plate (20) and can drive the smoke baffle plate (20) to reciprocate between the first position and the second position;

the shell (10) is also provided with a position-giving opening (132) for the connecting frame (34) to pass through and allowing the connecting frame (34) to move back and forth between the first position and the second position along with the smoke baffle plate (20);

it is characterized by also comprising:

the sealing plate assembly (40) comprises a partition plate (41) arranged at the position giving opening (132), and the partition plate (41) can close the position giving opening (132) when the smoke baffle plate (20) moves to the second position state.

2. The range hood of claim 1, wherein: the sealing plate assembly (40) further comprises a moving mechanism connected with the partition plate (41) and used for driving the partition plate (41) to open or close the position giving opening (132).

3. The range hood of claim 2, wherein: defining a position, which is located between the first position and the second position and is adjacent to the second position, on the moving path of the smoke baffle (20) as a third position, wherein the effective air inlet area of the air inlet (131) is gradually increased in the process that the smoke baffle (20) moves from the first position to the second position;

the movement mechanism is linked with the driving mechanism (30) or the smoke baffle plate (20), and at least can drive the partition plate (41) to close the position-giving opening (132) in the process that the smoke baffle plate (20) moves from the third position to the second position, drive the partition plate (41) to open the position-giving opening (132) in the process that the smoke baffle plate (20) moves from the second position to the third position, and keep the partition plate (41) in a state of opening the position-giving opening (132) in the process that the smoke baffle plate (20) moves from the third position to the first position.

4. The range hood of claim 3, wherein the movement mechanism comprises:

a mounting seat (421) fixed to the housing (10);

the rotating column (422) is connected with the partition plate (41) and is rotatably arranged on the mounting seat (421) in a mode of rotating around the axis of the rotating column, a limiting pin (4220) which protrudes outwards in the radial direction is further arranged on the outer peripheral wall of the rotating column (422), and the axial direction of the rotating column (422) is parallel to the moving direction of the smoke baffle plate (20);

the steering sleeve (423) is sleeved outside the rotating column (422) and can be driven by the connecting frame (34) to slide along the axial direction of the rotating column (422) in the process that the smoke baffle plate (20) moves from the third position to the second position, and the steering sleeve (423) is also provided with a sliding groove (4232) which is spirally arranged along the axial direction and is used for the limiting pin (4220) to slide and restrict;

and the elastic piece (424) acts on the steering sleeve (423) to allow the steering sleeve (423) to overcome the elastic force of the elastic piece (424) to move along the axial direction of the rotating column (422) when the smoke baffle (20) moves from the third position to the second position and to reversely reset the steering sleeve (423) during the smoke baffle (20) moves from the first position to the third position.

5. The range hood of claim 4, wherein: the mounting seat (421) is provided with a mounting groove (4210), the rotating column (422) is arranged in the mounting groove (4210), two ends of the rotating column (422) are rotationally restricted on two opposite side walls of the mounting groove (4210), and one end part of the rotating column (422) is exposed out of the mounting seat (421) and is used for being connected with the partition plate (41).

6. The range hood of claim 5, wherein: the steering sleeve (423) is also arranged in the mounting groove (4210), the cross section of the outer peripheral wall of the steering sleeve (423) is at least partially non-circular, and the inner wall of the mounting groove (4210) is matched with the outer peripheral wall of the steering sleeve (423) so as to limit the steering sleeve (423) to rotate in the circumferential direction relative to the mounting seat (421).

7. The range hood of claim 6, wherein: the elastic piece (424) is a return spring sleeved on the rotating column (422), the steering sleeve (423) is provided with an inner hole (4230) for the rotating column (422) to penetrate through, a spring positioning hole (4231) with the caliber larger than that of the inner hole (4230) is formed in the end part of the steering sleeve, a limiting step is formed between the spring positioning hole (4231) and the inner hole (4230) of the steering sleeve (423), the first end of the return spring is accommodated in the spring positioning hole (4231) and abutted against the limiting step, and the second end of the return spring is abutted against the inner wall of the mounting groove (4210).

8. The range hood according to any one of claims 1 to 7, wherein: casing (10) have with air inlet duct (14) of air intake (131) intercommunication and with air inlet duct (14) looks independent hold chamber (15), hold and seted up on the wall in chamber (15) let a bit mouthful (132), at least part of actuating mechanism (30) is located hold in chamber (15), link (34) warp let a bit mouthful (132) stretch out hold outside the chamber (15) and with smoke baffle (20) connect.

9. The range hood of claim 8, wherein: casing (10) include inner shell (11), enclose and establish outer shell (12) outside inner shell (11) and locate support frame (13) of the bottom department of the bottom of inner shell (11) and outer shell (12), the inner space of inner shell (11) prescribes a limit to air inlet duct (14), outer shell (12), inner shell (11) and the corresponding part of support frame (13) prescribes a limit to jointly accommodate chamber (15), have on support frame (13) with air intake (131) of air inlet duct (14) intercommunication and with the position mouth (132) of letting that holds chamber (15) intercommunication.

10. The range hood according to any one of claims 1 to 7, wherein: keep off cigarette board (20) and have two to arrange in proper order along left right direction, two keep off cigarette board (20) homoenergetic and move about actuating mechanism (30) drive down, let a mouthful (132) for controlling the bar mouth that extends the arrangement.

11. The range hood of claim 10, wherein: the two smoke baffles (20) are driven by the same driving mechanism (30) to move close to or away from each other in the left-right direction.

12. The range hood according to claim 11, wherein the drive mechanism (30) comprises:

a drive motor (31) having an output shaft connected to a drive gear (32);

the transmission rack assembly comprises two transmission racks (33), the two transmission racks (33) can be arranged on the machine shell (10) in a reciprocating sliding mode along the left-right direction and extend in the left-right direction, and the two transmission racks (33) are meshed with the driving gear (32) so as to move towards or away from each other under the driving of the driving gear (32);

the number of the connecting frames (34) is two, and the connecting frames are respectively and correspondingly connected with the two transmission racks (33).

13. The range hood of claim 12, wherein: the machine shell (10) is provided with two slide rails (35) which extend left and right and are arranged, and the two transmission racks (33) are respectively connected to the two slide rails (35) in a sliding manner.

14. The range hood of claim 12, wherein: every be connected with two link (34) of interval arrangement around on keeping off cigarette board (20), the driving rack subassembly also have two sets of arranging around, every two link (34) on keeping off cigarette board (20) correspond with two sets of driving rack subassemblies and link to each other, two sets of driving rack subassemblies are driven by same driving motor (31) and synchronous motion.

Images