CN110375366B

CN110375366B - Low-suction type range hood

Info

Publication number: CN110375366B
Application number: CN201910687640.7A
Authority: CN
Inventors: 翁建松; 贾博贤; 陈旭斌; 张青青
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-09-29
Anticipated expiration: 2039-07-29
Also published as: CN110375366A

Abstract

The invention discloses a low-suction type range hood, which comprises a shell and a panel arranged on the front side of the shell, wherein the lower part of the panel is provided with an air inlet, the panel is provided with a smoke baffle plate capable of opening or closing the air inlet, and a driving mechanism and a transmission mechanism capable of driving the smoke baffle plate to act, the transmission mechanism comprises a connecting rod assembly which transmits the output torque of the driving mechanism to the smoke baffle plate so as to drive the smoke baffle plate to rotate, and the low-suction type range hood is characterized in that: the transmission mechanism further comprises a first slide rail, a second slide rail, a first slide block in sliding fit with the first slide rail, and a second slide block in sliding fit with the second slide rail, the first slide rail and the second slide rail are respectively fixed on the left side and the right side in the shell and extend in the longitudinal direction, the left side and the right side of the lower end portion of the smoke baffle, which faces the rear side in the shell, are respectively in rotating connection with the first slide block and the second slide block at corresponding positions, and therefore the lower end portion of the smoke baffle translates along the corresponding slide rails and rotates relatively in the movement process.

Description

Low-suction type range hood

Technical Field

The invention relates to an oil fume purification device, in particular to a low-suction range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood of near-suction type utilizes the vortex wind pressure principle, absorbs most of the oil smoke near the cooking bench in the form of arc, can reduce the harmful effects on the health of human bodies, and the power source is near the cooking bench, basically can not reduce the suction effect of the power source.

The near-suction range hood has better oil smoke suction effect compared with range hoods in other forms because the air inlet is closer to the smoke source. Meanwhile, in order to further improve the oil smoke absorption effect, a low-suction type oil smoke absorption machine with an air inlet closer to a smoke generation source is slowly derived. The existing low-suction range hood mainly has two types, one type is a 7-shaped range hood, and the other type is the same as a side-suction type range hood, and only an air inlet is arranged at the lower part of a panel.

The low-suction type range hood disclosed in the Chinese patent with the application number of 201120406258.3 comprises a smoke collection cover with a smoke suction port at the bottom, a fan cover is arranged at the top of the smoke collection cover, at least one group of fans are arranged in the fan cover, and a filter assembly capable of adjusting the air inlet position is further arranged on the smoke suction port. Also, as disclosed in chinese patent application No. 95208122.9, a double-layer suction type range hood is comprised of a housing, a motor, a wind wheel, an exhaust port and two air inlets, wherein one air inlet is located at the middle of the two sides of the lower part of the body, and the other air inlet extends downward along the rear part of the range hood for a certain distance, so that the lower air inlet is closer to the cooking bench to quickly draw away the oil smoke.

According to the existing low-suction range hood, the air inlet is directly exposed outside, and the oil smoke is easy to escape upwards along the panel due to the fact that the oil smoke collecting effect of the smoke baffle plate is not available, the oil smoke suction effect is not improved much, and oil stains are directly exposed outside and are not attractive; if a smoke baffle plate adopted by the side-suction range hood is arranged at the air inlet, the oil smoke suction effect can be better improved, and meanwhile, the smoke baffle plate is more attractive after being closed; however, because the air inlet is lower, the existing movement mechanism of the smoke baffle is adopted, and the lower edge of the smoke baffle is lower in the opening process, the smoke baffle is easy to interfere with a higher pot, such as a steamer, and the like, and the smoke baffle is inconvenient to use.

Disclosure of Invention

The invention aims to solve the technical problem in the prior art, and provides a low-suction range hood which can improve the oil smoke suction effect and simultaneously can prevent a smoke baffle plate from interfering with a cooker in the opening process.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a low-suction type range hood, includes the casing, sets up the panel in the casing front side, the air intake has been seted up to the lower part of panel, be provided with on the panel and open or close the cigarette board that keeps off of air intake and can drive actuating mechanism and the drive mechanism who keeps off the action of cigarette board, thereby drive mechanism includes and transmits the output torque of actuating mechanism to keeping off the cigarette board and drive the link assembly that keeps off cigarette board pivoted, its characterized in that: the transmission mechanism further comprises a first slide rail, a second slide rail, a first slide block in sliding fit with the first slide rail, and a second slide block in sliding fit with the second slide rail, the first slide rail and the second slide rail are respectively fixed on the left side and the right side in the shell and extend in the longitudinal direction, the left side and the right side of the lower end portion of the smoke baffle, which faces the rear side in the shell, are respectively in rotating connection with the first slide block and the second slide block at corresponding positions, and therefore the lower end portion of the smoke baffle translates along the corresponding slide rails and rotates relatively in the movement process.

Preferably, keep off the cigarette board and the slider is connected through the pivot mode, drive mechanism still includes first pivot and second pivot, first pivot is connected fixedly with the rear side tip in keeping off the cigarette board orientation casing, the second pivot is connected fixedly with the rear side tip in keeping off the cigarette board orientation casing, first pivot and second pivot are connected respectively in the left and right sides that keeps off the cigarette board, first pivot still rotates with first slider to be connected, the second pivot still rotates with the second slider to be connected.

Preferably, for make the motion track of keeping off cigarette board lower extreme along the panel, avoid interfering with the panel, the panel from top to bottom slopes down gradually, the incline direction of first slide rail and second slide rail and panel is unanimous.

Two slide rails are arranged for convenience of fixing, the panel comprises a panel support and frames coated on the upper end and the left side and the right side of the panel support, the first slide rail is fixedly connected with the left frame, and the second slide rail is fixedly connected with the right frame.

For the lower extreme that makes the cigarette board can be followed the panel and moved closely, and can not insert inside the air intake, reduce the air inlet area, reduce and hold together the cigarette effect, the cigarette board is located the front side of the frame of the left and right sides.

In order to enable the sliding rails on the two sides to be stressed uniformly, the two sides of the smoke baffle plate act synchronously, the connecting rod assembly and the driving mechanism are arranged in the middle of the panel facing the rear side in the shell through the bracket, and the connecting rod assembly is connected to the middle of the smoke baffle plate facing the rear side in the shell through the first smoke baffle plate bracket.

Preferably, in order to amplify the output torque of the driving mechanism and improve the load capacity of the movement mechanism, an output shaft of the driving mechanism extends into the bracket and can rotate relative to the bracket, and the output shaft extends in the left-right direction; the connecting rod assembly comprises a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod and the second connecting rod are provided with a first end and a second end which are opposite, the first end of the first connecting rod is fixed with the output shaft in a connected mode, the second end of the first connecting rod is connected with the first end of the second connecting rod, the third connecting rod comprises a first rod part and a second rod part which are arranged in an angled mode, the first rod part extends towards the direction far away from the support from the position close to the support, one end, close to the support, of the first rod part is connected with the second end of the second connecting rod at the upper end and is connected with the support in a rotating mode at the lower end, the second rod part is bent forwards from the end, far away from the first rod part, of the second rod part is connected with the first smoke baffle plate support, and the support and the connecting rod assembly form a four-bar mechanism.

In order to facilitate auxiliary limitation of the opening angle of the smoke baffle, the connecting rod assembly further comprises a limiting shaft arranged on the support, the limiting shaft is parallel to an output shaft of the driving mechanism, and the limiting shaft is located below the first connecting rod and can be abutted to the first connecting rod when the smoke baffle is completely opened.

For avoiding the user to face oil net when using, promote user experience, air intake department is provided with oil net, oil net inclines gradually backward from top to bottom for the panel to and form certain contained angle between the panel.

In order to prevent the oil screen from obstructing the connection of the connecting rod assembly, the rotating shaft and the smoke baffle plate, a first through groove is formed in the panel, and the connecting rod assembly penetrates through the first through groove and is connected with the smoke baffle plate; when drive mechanism includes first pivot and second pivot, the ascending length of the left and right sides of oil net is less than the length of panel, is formed with the second between oil net left side border and panel left side border and leads to the groove, first pivot upwards passes and is connected with first slider from the second through-groove, is formed with the third between oil net right side border and panel right side border and leads to the groove, the second pivot upwards passes and is connected with the second slider from the third through-groove.

Compared with the prior art, the invention has the advantages that: 1) the smoke baffle is arranged at the air inlet, so that the smoke baffle can play a smoke gathering role, the smoke is prevented from escaping upwards along the panel, the smoke absorption effect is improved, the smoke baffle moves in a translation and rotation combined mode, the smoke baffle is always far away from a pot in the moving process, and the smoke baffle is prevented from colliding with a higher pot; 2) the connecting rod assembly for driving the smoke baffle to rotate is connected to the middle of the smoke baffle and is driven from the center of the smoke baffle, so that the problem that the other side of the smoke baffle driven by a single side cannot be synchronized is solved; the transmission mechanism for driving the smoke baffle to act comprises a set of four-bar mechanism, and can amplify the torque output by the driving mechanism, so that the load capacity of the movement mechanism is improved; the oil net that air intake department set up becomes certain angle with the panel, because user's sight is higher for the user is difficult to observe the oil net, makes the oil net have the concealment nature, thereby avoids the greasy dirt on the oil net directly to be seen by the user, influences experience.

Drawings

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

FIG. 2 is a partial schematic view of a range hood according to an embodiment of the present invention;

fig. 3 is a schematic view of a part of a movement mechanism of a smoke baffle of the range hood according to the embodiment of the invention;

fig. 4 is a schematic view of a closed state of a smoke baffle of the range hood according to the embodiment of the invention;

fig. 5 is a schematic view of the range hood according to the embodiment of the present invention, in which the smoke barrier is closed and is engaged with the cooking bench;

FIG. 6 is a schematic view of a smoke barrier and a moving mechanism thereof of the range hood of FIG. 4;

FIG. 7 is a cross-sectional view of a smoke barrier and its moving mechanism of the range hood of FIG. 4;

fig. 8 is a schematic view of the range hood according to the embodiment of the present invention showing an opened state of the smoke barrier;

fig. 9 is a schematic view of the range hood according to the embodiment of the present invention, in which the first smoke barrier is opened and is engaged with the cooking bench;

FIG. 10 is a schematic view of a smoke barrier and a moving mechanism thereof of the range hood of FIG. 8;

FIG. 11 is a cross-sectional view of a smoke barrier and its movement mechanism of the range hood of FIG. 8;

fig. 12 is a second schematic view of the range hood according to the embodiment of the present invention in an open state of the smoke barrier;

fig. 13 is a schematic view of the range hood according to the embodiment of the present invention, in which the second smoke barrier is opened and is engaged with the cooking bench;

fig. 14 is a schematic view of a smoke barrier and a movement mechanism thereof of the range hood of fig. 12;

FIG. 15 is a sectional view of a smoke barrier and its moving mechanism of the range hood of FIG. 12;

fig. 16 is a schematic view of a closed state of a smoke barrier of the range hood according to the embodiment of the invention;

fig. 17 is a schematic view of the range hood according to the embodiment of the present invention, in which the smoke barrier is closed and engaged with the cooking bench;

FIG. 18 is a schematic view of a smoke barrier and a moving mechanism thereof of the range hood of FIG. 16;

FIG. 19 is a cross-sectional view of the oil screen, smoke barrier and its moving mechanism of the range hood of FIG. 16;

Detailed Description

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

Referring to fig. 1 to 7, a low-suction range hood includes a housing 1, a panel 2 disposed at the front side of the housing 1, a box 3 disposed above the housing 1, and a fan 4 disposed in the box 3. For convenience of description, in this specification, "front", "rear", "left", "right", "up" and "down" refer to directions of the extractor hood relative to a user when in use.

The panel 2 is inclined from top to bottom, and an air inlet 21 is formed on the panel 2. In the embodiment, the air inlet 21 is formed in the lower portion of the panel 2, the lower edge of the air inlet 21 is almost flush with the lower edge of the panel 2, and the preferred distance H between the lower edge of the air inlet 21 and the cooking bench 100 is 320mm to 450mm, which is closer to the smoke source than a general side-suction range hood, thereby forming a low-suction range hood. The air inlet 21 is provided with a smoke baffle 5, and the smoke baffle 5 is rotatably connected with the panel 2, so that the air inlet 21 can be opened or closed. When the range hood is in a non-working state, the smoke baffle 5 is closed, the inclination direction of the smoke baffle 5 is consistent with that of the panel 2, and the panel 2 and the smoke baffle 5 form a flat plane. When the range hood is in a working state, the smoke baffle 5 is opened to play a role of gathering smoke, so that the oil smoke is prevented from rising upwards to escape, and the oil smoke absorption effect is improved.

When the cookware 200 on the cooking bench 100 is a relatively high cookware such as a steamer, as shown in fig. 5, since the air inlet 21 is relatively low, if the smoke barrier 5 is a conventional movement mechanism, the smoke barrier 5 moves in a fixed axis rotation manner, the rotation axis is at the upper end, and the lower end rotates upwards and forwards to open, so that the smoke barrier easily interferes with the top or even the upper part of the cookware 200, thereby causing the cookware 200 to be overturned or the smoke barrier 5 to be damaged. Therefore, in the present embodiment, the smoke barrier 5 adopts a moving mechanism, so that in the opening process of the smoke barrier 5, the moving track is that the lower end rotates backwards and upwards, and the upper end rotates forwards and downwards, forming a motion form of translation plus rotation. Therefore, the smoke baffle 5 is farther away from the cooker 200 in the opening process and the motion track, so that the smoke baffle 5 is prevented from interfering with the cooker 200 in the opening process, and the normal use is ensured.

The motion mechanism comprises a driving mechanism 61 and a transmission mechanism, and preferably, the driving mechanism 61 can adopt a motor. The transmission mechanism includes a first rotating shaft 621, a first slide rail 622, a second rotating shaft 623, a second slide rail 624, a link assembly 625, and a bracket 626. The connecting rod assembly 625 transmits the output of the driving mechanism 61 to the smoke barrier 5, so that the smoke barrier 5 can be driven to act.

A bracket 626 is provided on the rear side of the panel 2 facing the inside of the housing 1 and above the air intake 21, and the drive mechanism 61 is provided on the bracket 626 so that the position thereof is relatively fixed. The output shaft 611 of the drive mechanism 61 extends into the holder 626 and is rotatable relative to the holder 626, and the output shaft 611 extends in the left-right direction, preferably horizontally. The linkage assembly 625 includes a first link 6251, a second link 6252, a third link 6253, and a check shaft 6254, the first and

second links

6251, 6252 having first and second opposing ends, respectively. Wherein, the first end of the first link 6251 is disposed at the outer circumference of the output shaft 611 and is fixedly connected so as to rotate along with the rotation of the output shaft 611, the second end of the first link 6251 is connected with the first end of the second link 6252 (e.g., by a pin to form a rotational connection), and the second end of the second link 6252 is connected with the third link 6253 (e.g., by a pin to form a rotational connection). The third link 6253 includes a first lever portion 62531 and a second lever portion 62532, which are angularly disposed, the first lever portion 62531 extending from near the bracket 626 in a direction away from the bracket 626, and the first lever portion 62531 being near one end of the bracket 626, connected at its upper end to the second lever portion 6252, and pivotally connected at its lower end to the bracket 626 (e.g., pivotally connected by a pin). The second rod portion 62532 is bent forward from an end of the first rod portion 62531 away from the bracket 626 such that the first rod portion 62531 and the second rod portion 62532 are angled, and in the present embodiment, the first rod portion 62531 and the second rod portion 62532 are integrally formed to form an integral third link 6253. One end of the second rod portion 62532, which is far away from the first rod portion 62531, is provided with a first smoke baffle support 627, the first smoke baffle support 627 is connected with the smoke baffle 5 towards the rear side in the casing 1, preferably, the first smoke baffle support 627 is in a flat plate shape so as to be connected with the smoke baffle 5, and the smoke baffle 5 is stably driven to act.

The stopper shaft 6254 is parallel to the output shaft 611 of the drive mechanism 61, and both ends of the stopper shaft 6254 are connected to the bracket 626. The stopper shaft 6254 is located at the front side of the position where the third link 6253 is connected to the bracket 626, below the first link 6251. The limit shaft 6254 is provided to limit the opening of the smoke barrier 5 to the maximum.

The above-described drive mechanism 61, link assembly 625, and bracket 626 are located at the middle of the panel 2 (middle in the left-right direction), and the first smoke barrier bracket 627 is located at the middle of the smoke barrier 5 (middle in the left-right direction). The connecting rod assembly 625 and the bracket 626 form a set of four-bar linkage mechanism, and the torque output by the driving mechanism 61 is amplified through the four-bar linkage mechanism and is transmitted to the rotation center (and the bracket 626) of the third connecting rod 6253, and the torque output by the rotation center directly provides energy for the movement of the smoke baffle 5, so that the connecting rod assembly 625 improves the load capacity of the whole set of moving mechanism. Meanwhile, the connecting rod assembly 625 is connected in the middle (symmetrical center) of the smoke baffle plate 5 and driven from the center of the smoke baffle plate 5, so that the problem that the other side of the single-side drive cannot be synchronized is solved. Further, the drive mechanism 61 and the link assembly 625 are both provided by the bracket 626, and the positioning accuracy is ensured.

The first rotating shaft 621 and the first slide rail 622 are disposed on the left side of the whole range hood, and the second rotating shaft 623 and the second slide rail 624 are disposed on the right side of the whole range hood. In order to connect the first rotating shaft 621 with the smoke barrier 5 and the first sliding rail 622, respectively, and connect the second rotating shaft 623 with the smoke barrier 5 and the second sliding rail 624, respectively, the transmission mechanism further comprises a second smoke barrier bracket 6281, a first sliding block 6282, a third smoke barrier bracket 6283, and a second sliding block 6284. One end of the first rotating shaft 621 is connected with the smoke barrier 5 towards the rear side in the housing 1 through the second smoke barrier support 6281, the other end is connected with the first slide rail 622 in a sliding manner through the first slide block 6282, and the first rotating shaft 621 and the second smoke barrier support 6281 can be integrally formed. The first slide rail 622 is fixed in the housing 1, a first slide groove 6221 recessed toward the outside of the housing 1 is formed in a side surface of the first slide rail 622 facing the inside of the housing 1, that is, a first slide groove 6221 recessed leftward is formed in a right side surface of the first slide rail 622, the first slide block 6282 is slidably disposed in the first slide groove 6221, and the first rotating shaft 621 is rotatably connected to the first slide block 6282. Similarly, one end of the second rotating shaft 623 is connected to the smoke barrier 5 toward the rear side in the housing 1 through the third smoke barrier support 6283, and the other end is slidably connected to the second sliding rail 624 through the second sliding block 6284, and the second rotating shaft 623 and the third smoke barrier support 6283 may be integrally formed. The second sliding rail 624 is fixed in the housing 1, a second sliding slot 6241 recessed towards the outside of the housing 1 is formed on a side surface of the second sliding rail 624 facing the inside of the housing 1, that is, a second sliding slot 6241 recessed towards the right is formed on a left side surface of the second sliding rail 624, the second sliding block 6284 is slidably disposed in the second sliding slot 6241, and the second rotating shaft 623 is rotatably connected with the second sliding block 6284. The first slide rail 622 and the second slide rail 624 extend in the longitudinal direction (up and down direction), and the two opposite ends of each slide rail have a height difference, so that the lower end of the smoke barrier 5 can move up and down to open or close the air inlet 21. Preferably, the extension direction is the same as the panel 2, i.e. gradually inclined backwards from top to bottom. The lower ends of the first slide rail 622 and the second slide rail 624 preferably extend to the lower edge of the air inlet 21. The second smoke damper support 6281 and the second smoke damper support 6283 are provided on the left and right sides of the lower end of the smoke damper 5, preferably, symmetrically.

In this embodiment, the smoke barrier 5 is connected to the corresponding slider through a rotating shaft, alternatively, other structures may be adopted, such as a connecting rod assembly, a flexible member, etc., as long as the smoke barrier 5 can rotate relative to the slider and can translate along with the slider.

Thus, the driving mechanism 61 provides the smoke barrier 5 with upward rotation power through the connecting rod assembly 625, and the first rotating shaft 621, the first sliding rail 622, the second rotating shaft 623 and the second sliding rail 624 enable the lower end of the smoke barrier 5 to translate upward and rotate around the connection between the first rotating shaft 621 and the first sliding block 6282 and the connection between the second rotating shaft 623 and the second sliding block 6284. Through the structure, the movement form of the smoke baffle plate 5 is not simple fixed-axis rotation any more, but is combined movement of translation and rotation, namely, the smoke baffle plate 5 integrally translates upwards along the corresponding slide rails on the left side and the right side, and meanwhile, the smoke baffle plate 5 outwards turns around the corresponding rotating shafts on the left side and the right side.

The connecting rod assembly 625 may also adopt other existing transmission structures as long as the output of the driving mechanism 61 drives the smoke barrier 5 to rotate.

An oil screen 7 is arranged on the panel 2 and at the position of the air inlet 21, and the oil screen 7 can be in a grid shape. The oil screen 7 is inclined from top to bottom gradually backwards relative to the panel 2, so as to form a certain included angle with the panel 2. Referring to fig. 19, that is to say, the upper edge of the oil screen 7 is located at the upper edge of the air inlet 21, and the lower edge of the oil screen 7 is located at the rear side of the lower edge of the air inlet 21, so that the user is more difficult to observe the oil screen 7 due to the higher sight of the user, and the oil screen 7 has concealment performance, thereby preventing oil stains on the oil screen 7 from being directly seen by the user and affecting experience.

Due to the oil screen 7 at the air inlet 21, a first through slot 22 needs to be opened on the panel 2, so that the third connecting rod 6253 can pass through the first through slot 22 and be connected with the first smoke baffle bracket 627.

In order to avoid obstructing the sliding of the first and second

rotating shafts

621 and 623, the length of the oil screen 7 in the left-right direction is smaller than that of the panel 2, a second through groove 23 is formed between the left side edge of the oil screen 7 and the left side edge of the panel 2, so that the first rotating shaft 621 upwardly passes through the second through groove 23 to connect with the first slider 6282, and a third through groove 24 is formed between the right side edge of the oil screen 7 and the right side edge of the panel 2, so that the second rotating shaft 623 upwardly passes through the third through groove 24 to connect with the second slider 6284. The second through groove 23 and the third through groove 24 may be respectively in a long strip shape, the extending direction thereof may be the same as the panel 2, and the extending height thereof from top to bottom may be the same as the air inlet 21. Preferably, the second through groove 23 and the second through groove 24 are both communicated with the air inlet 21 to form a whole. Alternatively, the second through groove 23 and the third through groove 24 are opened on the oil screen 7.

In this embodiment, the panel 2 includes a panel bracket 25, and a frame 26 covering the upper end and the left and right sides of the panel bracket 25, and the oil screen 7 is integrally formed with the panel bracket 25. The smoke baffle 5 is positioned at the front side of the frames 26 at the left side and the right side, so that the lower end of the smoke baffle 5 can move along the panel 2 and tightly attached to the panel without being inserted into the air inlet 21, the air inlet area is reduced, and the smoke gathering effect is reduced. Alternatively, the first sliding rail 622 and the second sliding rail 624 may be fixed to the housing 1. The first through groove 22 is opened on the panel bracket 25 at a position close to the oil screen 7.

When the range hood is closed, referring to fig. 4 to 7, the smoke barrier 5 closes the air inlet 21, the smoke barrier 5 and the panel 2 form a flat plane, and each sliding block is located at the lowest end of the corresponding sliding rail.

When the range hood is in operation, the smoke barrier 5 opens the air inlet 21, see fig. 8 to 11, which is an initial stage of the opening process of the smoke barrier 5, and fig. 12 to 15 which are intermediate stages of the opening process of the smoke barrier 5, at this time, the driving mechanism 61 drives the first end of the first link 6521 to rotate, so that the second end of the first link 6521 rotates backwards and downwards around the first end, and drives the second end of the second link 6252 to move backwards, so that the first rod portion 62531 of the third link 6253 rotates backwards and downwards around the connection with the bracket 626, and the second rod portion 62532 rotates the smoke barrier 5, and due to the arrangement of the first rotating shaft 621, the first sliding rail 622, the second rotating shaft 623 and the second sliding rail 624, the second smoke barrier bracket 6281 and the third smoke barrier bracket 6283 rotate forwards and downwards along with the movement of the smoke barrier 5, so that one end of the first rotating shaft 621 and one end of the second rotating shaft 623 far away from the smoke barrier bracket respectively move forwards and downwards, The first sliding block 6282 and the second sliding block 6284 slide upwards along the corresponding sliding rails, the first rotating shaft 621 and the second rotating shaft 623 translate forwards and rotate downwards along the corresponding through grooves, and when the first rotating shaft 621 and the second rotating shaft 623 translate to the uppermost ends of the corresponding through grooves, the smoke baffle 5 is completely opened, see fig. 16 to 19, wherein an arrow in fig. 17 indicates a flow direction of oil smoke, and at this time, the second end of the first link 6251 abuts against the lower limiting shaft 6254, so that the first link 6251 is prevented from further rotating, and a limiting effect is achieved.

Therefore, in the moving process of the smoke baffle 5, the lower edge of the smoke baffle 5 always clings to the panel 2 to slide upwards and simultaneously turns forwards (outwards) along the first rotating shaft 621 and the second rotating shaft 623; the cooker 200 is kept away from the cooker in the moving process, and the cooker does not collide with the cooker 200 which is higher like a smoke baffle plate which rotates along a fixed shaft.

Because the movement form of the smoke baffle plate 5 is the combination movement of translation and rotation, the translation of the smoke baffle plate is realized by adopting the sliding rails on the two sides, and if the sliding rails on the two sides are stressed unevenly, the sliding rails are clamped or the friction force is larger, so that the driving mechanism 61 is arranged in the middle, and the even stress of the sliding rails on the two sides can be ensured to the greatest extent. If the driving mechanism 61 is placed on one side, in the movement process of the smoke barrier 5, because the length of the smoke barrier 5 is long, the movement of the driving end and the driven end is difficult to ensure synchronization under the action of gravity and the like, and the driven end often lags behind the driving end. In the rotation of the fixed shaft, because the movement is simple, the degree of asynchronism of the movement of the driving end and the driven end of the smoke baffle plate is small; however, in the invention, the movement is complex, and is a combined movement of translation and rotation, when a single-side driving structure is adopted, the asynchronism is very obvious, the driven end can obviously lag behind the driving end in the opening process of the smoke baffle 5, and even the sliding rail is clamped or the friction force is large due to asynchronism.

Claims

1. The utility model provides a low-suction range hood, includes casing (1), sets up panel (2) at casing (1) front side, air intake (21) have been seted up to the lower part of panel (2), be provided with on panel (2) and open or close cigarette board (5) that keep off of air intake (21) and can drive actuating mechanism (61) and drive mechanism that keep off cigarette board (5) action, thereby drive mechanism includes and transmits the output torque of actuating mechanism (61) to cigarette board (5) and drives cigarette board (5) pivoted link assembly (625), its characterized in that: the transmission mechanism further comprises a first sliding rail (622), a second sliding rail (624), a first sliding block (6282) in sliding fit with the first sliding rail (622), and a second sliding block (6284) in sliding fit with the second sliding rail (624), the first sliding rail (622) and the second sliding rail (624) are respectively fixed on the left side and the right side in the shell (1) and extend in the longitudinal direction, the left side and the right side of the lower end portion of the rear side of the smoke baffle plate (5) facing the shell (1) are respectively in rotary connection with the first sliding block (6282) and the second sliding block (6284) in the corresponding positions, and therefore the lower end portion of the smoke baffle plate (5) translates along the corresponding sliding rails and rotates relatively in the movement process.

2. The low suction range hood according to claim 1, wherein: drive mechanism still includes first pivot (621) and second pivot (623), first pivot (621) and keep off cigarette board (5) and be connected fixedly towards the rear side lower extreme in casing (1), second pivot (623) and keep off cigarette board (5) and be connected fixedly towards the rear side lower extreme in casing (1), the left and right sides at keeping off cigarette board (5) is connected respectively in first pivot (621) and second pivot (623), first pivot (621) still rotates with first slider (6282) and is connected, second pivot (623) still rotates with second slider (6284) and is connected.

3. The low suction range hood according to claim 1, wherein: panel (2) from top to bottom slope down gradually, first slide rail (622) and second slide rail (624) are unanimous with the incline direction of panel (2).

4. The low suction range hood according to claim 3, wherein: panel (2) are including panel support (25), cladding frame (26) at panel support (25) upper end and left and right sides, first slide rail (622) are connected fixedly with left frame (26), second slide rail (624) are connected fixedly with frame (26) on right side.

5. The low suction range hood according to claim 3, wherein: the smoke baffle plate (5) is positioned at the front side of the frames (26) at the left side and the right side.

6. The low suction range hood according to claim 1, wherein: the connecting rod assembly (625) and the driving mechanism (61) are arranged in the middle of the panel (2) towards the inner rear side of the shell (1) through a bracket (626), and the connecting rod assembly (625) is connected to the middle of the smoke baffle plate (5) towards the inner rear side of the shell (1) through a first smoke baffle plate bracket (627).

7. The low suction range hood according to claim 6, wherein: an output shaft (611) of the driving mechanism (61) extends into the bracket (626) and can rotate relative to the bracket (626), and the output shaft (611) extends in the left-right direction; the connecting rod assembly (625) comprises a first connecting rod (6251), a second connecting rod (6252) and a third connecting rod (6253), the first connecting rod (6251) and the second connecting rod (6252) respectively have a first end and a second end which are opposite, the first end of the first connecting rod (6251) is fixedly connected with the output shaft (611), the second end of the first connecting rod (6251) is connected with the first end of the second connecting rod (6252), the third connecting rod (6253) comprises a first rod part (62531) and a second rod part (62532) which are arranged at an angle, the first rod part (62531) extends from the position close to the bracket (626) to the direction far away from the bracket (626), the first rod part (62531) is close to one end of the bracket (626), is connected with the second end of the second connecting rod (6252) at the upper end and is rotatably connected with the bracket (626) at the lower end, and the second rod part (62532) is bent forwards from one end of the first rod part (62531) far away from the bracket (626), the end of the second rod part (62532) far away from the first rod part (62531) is connected with the first smoke baffle bracket (627), and the bracket (626) and the connecting rod assembly (625) form a four-bar mechanism.

8. The low suction range hood according to claim 6, wherein: the connecting rod assembly (625) further comprises a limiting shaft (6254) arranged on the support (626), the limiting shaft (6254) is parallel to the output shaft (611) of the driving mechanism (61), and the limiting shaft (6254) is located below the first connecting rod (6251) and can abut against the first connecting rod (6251) when the smoke baffle (5) is completely opened.

9. The low suction type range hood according to any one of claims 1 to 8, wherein: air intake (21) department is provided with oil net (7), oil net (7) from top to bottom inclines gradually backward for panel (2) to form certain contained angle between with panel (2).

10. The low suction range hood according to claim 9, wherein: a first through groove (22) is formed in the panel (2), and the connecting rod assembly (625) penetrates through the first through groove (22) and is connected with the smoke baffle plate (5); when the transmission mechanism comprises a first rotating shaft (621) and a second rotating shaft (623), the length of the oil screen (7) in the left-right direction is smaller than that of the panel (2), a second through groove (23) is formed between the left side edge of the oil screen (7) and the left side edge of the panel (2), the first rotating shaft (621) upwards penetrates through the second through groove (23) to be connected with the first sliding block (6282), a third through groove (24) is formed between the right side edge of the oil screen (7) and the right side edge of the panel (2), and the second rotating shaft (623) upwards penetrates through the third through groove (24) to be connected with the second sliding block (6284).