CN111156562A

CN111156562A - Fume exhaust fan

Info

Publication number: CN111156562A
Application number: CN202010123990.3A
Authority: CN
Inventors: 梅梦磊; 叶丰
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-05-15
Anticipated expiration: 2040-02-27
Also published as: CN111156562B

Abstract

The invention discloses a range hood, which comprises a fume collecting hood, a fan frame arranged above the fume collecting hood and a fume collecting mechanism, wherein the fume collecting hood is provided with an air inlet, and the range hood is characterized in that: the smoke collecting mechanism comprises a smoke guide plate and a baffle, the baffle is located on the front side of the smoke guide plate, and when the range hood is in a working state, the smoke collecting mechanism is located at a first position where the smoke guide plate longitudinally extends downwards on the front side of the bottom of the smoke collecting cover below the air inlet. Compared with the prior art, the invention has the advantages that: through setting up the smoke deflector that can be in the air intake below and the baffle that is in collection petticoat pipe bottom front side, formed a lower cigarette structure of holding together in collection petticoat pipe below, it is better to hold together the cigarette effect, the baffle of front side can realize the isolation of people's face and oil smoke simultaneously, can gather together smoke deflector front side short time and can not inhale the inside oil smoke of range hood when the oil smoke volume is big, prevent effectively that the front side from running the cigarette, bring the culinary art experience of oil smoke face not for the user.

Description

Fume exhaust fan

Technical Field

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

Background

The range hood has become one of indispensable kitchen household electrical appliances in modern families, and the range hood generally comprises a top suction type range hood and a side suction type range hood, and the top suction type range hood has more and more extensive application due to the advantages of neatness, lightness, small occupied space and the like. The top-suction type range hood generally comprises a smoke collecting hood and a fan shell positioned on the smoke collecting hood, wherein a volute, an impeller and a motor for driving the impeller are arranged in the fan shell, the top-suction type range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and a filter screen is used for filtering partial grease particles.

One of the disadvantages of the chinese cooking is that the oil smoke in the kitchen is relatively large, and in order to exhaust the oil smoke in the kitchen as soon as possible and improve the effect of absorbing the oil smoke, a smoke guide plate is usually arranged at the lower side of the air inlet of the top-suction range hood. The top suction type range hood with the smoke guide plate disclosed in the chinese patent with the application number of 201410419676.4 comprises a machine body, a smoke collecting hood and the smoke guide plate, wherein the smoke collecting hood is connected with the machine body, a fan is arranged in the machine body, an air inlet is arranged on the smoke collecting hood, the smoke guide plate is arranged right opposite to the air inlet of the smoke collecting hood, a distance exists between the smoke guide plate and the smoke collecting hood to form an oil smoke channel, and the lower surface of the smoke guide plate is wavy.

Although the range hood with the structure can pump most of oil smoke when in work, the anti-interference capability is not strong when in work, and particularly, the phenomenon of smoke leakage is more obvious when people walk or the door and window are opened to cause external airflow interference in the cooking process.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a range hood aiming at the defects in the prior art, and the range hood improves the oil smoke suction effect and the anti-interference capability at the same time.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes collection petticoat pipe, sets up the fan frame in collection petticoat pipe top and hold together cigarette mechanism, set up air intake, its characterized in that on the collection petticoat pipe: the smoke collecting mechanism comprises a smoke guide plate and a baffle, the baffle is located on the front side of the smoke guide plate, and when the range hood is in a working state, the smoke collecting mechanism is located at a first position where the smoke guide plate longitudinally extends downwards on the front side of the bottom of the smoke collecting cover below the air inlet.

In order to guide the oil smoke forward, and the space between the baffle and the smoke guide plate is sucked, and at the same time, to guide the oil smoke, the smoke guide plate is inclined downward from the front to the back.

In order to prevent the oil smoke from escaping from the lower part of the baffle plate when the oil smoke is guided forwards, when the smoke collecting mechanism is positioned at the first position, the upper edge of the front side of the smoke guide plate is not higher than the lower edge of the baffle plate.

In order to further guide the oil smoke forwards and match with the smoke guide plate, the air inlet is formed in the bottom of the smoke collecting hood, and the bottom of the smoke collecting hood is gradually inclined downwards from front to back so as to form a wedge-shaped structure.

For making range hood when non-operating condition, keep whole outward appearance uniformity, reduce occupation space simultaneously, the smoke deflector can correspond the air intake setting with going up and down, the baffle can set up the bottom front side at the collection petticoat pipe with overturning, the axis of rotation of baffle extends about, and when range hood when non-operating condition, it closes the air intake, the baffle lateral extension draws in the second position in collection petticoat pipe bottom to hold together cigarette mechanism to be in the smoke deflector.

Preferably, hold together cigarette mechanism still including the link gear who is used for driving the cigarette guide plate to go up and down and the baffle upset, link gear includes actuating mechanism, is driven by actuating mechanism and around self axis pivoted transfer line, the transfer line extends in the left and right sides direction, connect through elevating system and realize going up and down between cigarette guide plate and the transfer line, connect through tilting mechanism and realize the upset between baffle and the transfer line.

Further, elevating system includes dwang, first slider guide rail, lifter and stores pylon that can up-and-down motion, the dwang extends on the front and back direction, the one end and the transfer line of dwang are connected and are rotated, the other end is rotated with first slider by the transfer line drive and be connected, first slider guide rail and lifter fixed connection, the stores pylon will lead cigarette board and lifter and be connected.

In order to limit the motion path of the lifting rod, the lifting mechanism further comprises a limiting guide rail arranged on the side wall of the fan frame, and the lifting rod is arranged in a sliding mode relative to the limiting guide rail.

Further, tilting mechanism includes pivot, second slider and second slider guide rail, the pivot is the form of buckling to form about extension and front and back extension, about extension can be connected with the transfer line and drive the rotation by the transfer line, the second slider guide rail sets up in baffle one side up when the second position and extend in the front and back direction, the second slider is connected with the rotation of the one end that the extension was kept away from about extension around the pivot to second slider and second slider guide rail sliding connection.

Preferably, the driving mechanism is a motor with double output shafts, the two transmission rods are symmetrically arranged left and right, each output end of the driving mechanism is connected with the corresponding transmission rod through a first speed change gear set, each transmission rod is connected with a lifting mechanism, and the end part, far away from the driving mechanism, of each transmission rod is connected with the turnover mechanism through a second speed change gear set.

Compared with the prior art, the invention has the advantages that: the smoke guide plate which can be positioned below the air inlet and the baffle which is positioned at the front side of the bottom of the smoke collecting cover form a lower smoke collecting structure below the smoke collecting cover, so that the smoke collecting effect is better, meanwhile, the baffle at the front side can realize the isolation of a human face and oil smoke, when the oil smoke amount is large, the front side of the smoke guide plate can be collected for a short time, the oil smoke in the range hood cannot be sucked, the smoke leakage at the front side is effectively prevented, and the cooking experience that the oil smoke cannot get on the face is brought to a user; the inclined design of the smoke guide plate enables most of the rising oil smoke to flow to the front side of the smoke guide plate along the smoke guide plate and be sucked into the cavity of the range hood from the front side, and therefore the opportunity of oil smoke diffusion and escape is reduced.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention in a non-operating state;

FIG. 2 is a schematic view of a hidden fan frame of the range hood according to the embodiment of the present invention in a non-operating state;

FIG. 3 is a schematic view of a hidden fan frame and a smoke collecting hood of the range hood according to the embodiment of the invention in a non-working state;

fig. 4 is a schematic view of the operating state of the range hood according to the embodiment of the present invention;

FIG. 5 is a schematic view of a hidden fan frame of the range hood according to the embodiment of the present invention;

FIG. 6 is a schematic view of the range hood according to the embodiment of the present invention showing the hidden fan frame and the smoke collecting hood in the operating state;

fig. 7 is a schematic view illustrating the range hood according to the embodiment of the present invention in a working state in cooperation with a cooking bench.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

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

Referring to fig. 1 to 3, in this embodiment, the range hood is of a top suction type, and includes a smoke collecting hood 1 and a fan frame 2 disposed above the smoke collecting hood 1, and an air inlet 11 is disposed at the bottom of the smoke collecting hood 1, so that oil smoke can enter the fan frame 2 through the air inlet 11 and then be exhausted through a fan system (not shown) disposed in the fan frame 2.

Range hood still constructs including holding together cigarette mechanism, holds together cigarette mechanism and includes smoke deflector 31 and baffle 32, and smoke deflector 31 corresponds the setting with air intake 11, can make oscilaltion motion, and is preferred, and smoke deflector 31 can be by preceding downward sloping gradually backward, and simultaneously, the bottom of collection petticoat pipe 1 also by preceding downward sloping gradually backward, forms the wedge structure, and inclination is the same with smoke deflector 31. Therefore, when the range hood is in a non-working state, the smoke guide plate 31 closes the air inlet 11, see fig. 1; when the range hood is in the working state, the smoke guide plate 31 moves downwards to open the air inlet 11, see fig. 4.

The baffle 32 is arranged at the front side of the smoke collecting cover 1, the baffle 32 can turn over relative to the smoke collecting cover 1, and the rotating shaft extends in the left-right direction, therefore, when the range hood is in a non-working state, the baffle 32 is collected at the bottom of the smoke collecting cover 1 and positioned at the front side of the smoke guide plate 31, the smoke collecting mechanism is in a second position, see fig. 1, when the range hood is in a working state, the baffle 32 turns over relative to the smoke collecting cover 1 and longitudinally extends downwards from the front side of the bottom of the smoke collecting cover 1, preferably in a substantially vertical state, such as being capable of being flush with the front side surface of the smoke collecting cover 1, and the smoke collecting mechanism is in a first position, see fig. 4.

The smoke gathering mechanism is gathered in when the range hood is in a non-working state, so that the range hood integrally has better aesthetic property, and when the range hood is in a working state, the smoke guide plate 31 is opened (the smoke guide plate 31 descends and the baffle plate 32 overturns), so that the oil smoke absorption effect can be effectively improved.

The smoke guide plate 31 and the baffle 32 can be provided with separate driving devices, and in order to simplify the structure, in this embodiment, the smoke guide plate 31 and the baffle 32 are linked, so the smoke collecting mechanism further comprises a linkage mechanism, and the linkage mechanism comprises a driving mechanism 331, a first speed change gear set 332, a second speed change gear set 333, a lifting mechanism 334, a turnover mechanism 335 and a transmission rod 336. The driving mechanism 331, the first speed change gear set 332 and the second speed change gear set 333 are disposed at the upper side of the fume collecting hood 1, and the idle space is reasonably utilized.

Preferably, the driving mechanism 331 is a motor, and is a dual output shaft motor, and power of the driving mechanism 331 is transmitted to the elevating mechanism 334 and the turnover mechanism 335 through the first speed change gear set 332 and the second speed change gear set 333. The first speed change gear set 332 has two, and is provided on two output shafts (output shafts extending left and right) of the drive mechanism 331, and the transmission lever 336 has two, respectively. In this embodiment, the first speed-change gear set 332 includes two gears having different module numbers and meshing with each other, wherein one gear is connected to the output shaft of the driving mechanism 331, and the other gear is connected to one end of the corresponding transmission rod 336 (the transmission rod 336 passes through the center of the gear and the transmission rod 336 is rotated by the gear), and each transmission rod 336 extends in the left-right direction. First ratio gearset 332 is used to vary (typically reduce) the speed of rotation transmitted from drive mechanism 331 to drive rod 336. The upper side of the fume collecting hood 1 is provided with two holders 12, one holder 12 for each transmission rod 336, and the transmission rods 336 pass through the respective holders 12 and are rotatably connected, thereby defining the positions of the transmission rods 336.

A second gear set 333 is disposed at an end of transmission rod 336 remote from first gear set 332. in this embodiment, second gear set 333 also includes two gears of different module that are meshed with each other, one of which is connected to transmission rod 336 (transmission rod 336 passes through the center of the gear and is driven by transmission rod 336 to rotate) and the other of which is connected to flipper 335. Lift mechanism 334 is coupled to drive rod 336, preferably at the junction of drive rod 336 and carrier 12, whereby carrier 12 supports and retains drive rod 336 and lift mechanism 334. Preferably, the first speed change gear set 332, the second speed change gear set 333, the lifting mechanism 334, the turnover mechanism 335 and the transmission rod 336 are arranged symmetrically left and right.

The lifting mechanism 334 includes a rotating rod 3341, a first slider 3342, a first slider guide 3343, a first limit guide 3344, a second limit guide 3345, a lifting rod 3346, and a hanger 3347. The rotation lever 3341 extends in the front-rear direction, and has one end connected to the transmission lever 336 and rotated by the transmission lever 336 and the other end rotatably connected to the first slider 3342. The first block guide 3343 is fixedly connected to the lifting rod 3346, and the first block 3342 is driven by the rotating rod 3341 to slide back and forth relative to the first block guide 3343, and can drive the lifting rod 3346 to lift through the first sliding guide 3343. The lateral wall of fan frame 2 is last, upper and lower interval sets up first spacing guide rail 3344 and second spacing guide rail 3345, and the lifter 3346 slides the setting relative to first spacing guide rail 3344 and second spacing guide rail 3345, and two spacing guide rails limit the lifter 3346 to move on vertical direction only from this. The limit rail may have only one or more than three. The lifting rod 3346, such as the bottom of the lifting rod 3346, is connected to the hanging rack 3347. The hanging rack 3347 is disposed on one side of the smoke guide plate 31 facing the wind frame 2, and four hooks 311 may be disposed on the smoke guide plate 31, and two hooks 311 disposed in tandem are connected to the front and rear ends of one hanging rack 3347. In order to make the left and right sides of the smoke guide plate 31 rise and fall synchronously, a cross beam 3348 can be connected between the two hangers 3347.

Second ratio gear set 333 is used to vary (typically reduce) the rotational speed at which drive link 336 is transmitted to flipper 335. The turnover mechanism 335 includes a rotation shaft 3351, a second slider 3352, and a second slider guide 3353. The rotation shaft 3351 is bent to form left and right extending portions 33511 and a front and rear extending portion 33512, and one end of the left and right extending portions 33511 passes through one of the gears of the second speed gear set 333 and is rotated by the second speed gear set 333. The second slider guide 3353 is disposed on the upward side of the shutter 32 in the non-operating state and extends in the front-rear direction, the second slider 3352 is rotatably connected to one end of the front-rear extension 33512 of the rotation shaft 3351, which is away from the left-right extension 33511, and the second slider 3352 is slidably connected to the second slider guide 3353, so that the second slider 3352 can slide back and forth along the second slider guide 3353 by the rotation shaft 3351.

Alternatively, the first speed gearset 332 and the second speed gearset 333 may be replaced with other existing transmission mechanisms. Further, the front side of the baffle plate 32 is connected to the front side of the smoke collecting hood 1 by a fixed hinge 34, and the baffle plate 32 is turned over about the axis (extending in the left-right direction) of the fixed hinge 34 as a center when turned over.

In the non-operating state, the smoke guide plate 31 and the baffle 32 are preferably on the same plane (both flat plates).

When the range hood is in operation, referring to fig. 4 to 6, the driving mechanism 331 is turned on, and the driving rod 336 is driven to rotate by the first speed change gear set 332, so that one end of the rotating rod 3341 of the lifting mechanism 334, which is far away from the driving rod 336, rotates downward, the first slider 3342 slides backward while driving the lifting rod 3346 to move downward by the first slider guide rail 3343, so that the smoke guide plate 31 moves downward, and meanwhile, one end of the rotating shaft 3351 of the turnover mechanism 335, which is far away from the second speed change gear set 333, rotates downward, the second slider 3352 slides forward, and the baffle 32 is pushed by the second slider guide rail 3353 to turn forward to the open state.

In the application, when cooking fume is generated, especially when the amount of the fume is large, after the fume guide plate 31 and the baffle 32 are completely opened in place, the fume guide plate 31 descends to effectively shorten the distance from a fume source, and the fume guide plate is matched with the baffle 32 to descend a negative pressure area of the range hood, namely a lower fume collecting structure is formed below the fume collecting cover 1, so that the fume collecting effect is better, as shown in fig. 7, an arrow indicates a fume flow path, the fume rising from the cooking bench 100 firstly contacts the inclined fume guide plate 31, and is sucked into the air inlet 11 from the periphery of the fume guide plate 31, and the inclined design of the fume guide plate 31 enables most of the rising fume to flow to the front side of the fume guide plate 31 and be sucked into the range hood from the front side, the chances of oil smoke diffusion and escape are reduced; meanwhile, the baffle 32 on the front side can realize the isolation of the human face and the oil smoke, and the front side of the smoke guide plate 31 can be gathered for a short time when the oil smoke amount is large, so that the oil smoke in the range hood cannot be sucked, the smoke leakage from the front side is effectively prevented, and the cooking experience that the oil smoke does not go to the face is brought to a user. Compared with the existing top-suction type range hood, the front part of the range hood can be blocked, the oil smoke can be locked in advance, and the problem of oil smoke escape is effectively solved. Meanwhile, due to the inclined arrangement of the smoke guide plate 31, when a large amount of oil smoke flows to the front side along the smoke guide plate 31, the oil smoke has a tendency of moving upwards when leaving the front side of the smoke guide plate 31, and in order to prevent the oil smoke from escaping, the upper edge of the front side of the smoke guide plate 31 cannot be higher than the lower edge of the baffle 32.

Claims

1. The utility model provides a range hood, includes collection petticoat pipe (1), sets up in fan frame (2) of collection petticoat pipe (1) top and hold together cigarette mechanism, air intake (11), its characterized in that have been seted up on collection petticoat pipe (1): gather cigarette mechanism and include smoke deflector (31) and baffle (32), baffle (32) are located smoke deflector (31) front side, and when range hood was in operating condition, it constructs at smoke deflector (31) in air intake (11) below, baffle (32) the first position of vertical downwardly extending of collection petticoat pipe (1) bottom front side to gather cigarette.

2. The range hood of claim 1, wherein: the smoke guide plate (31) is gradually inclined downwards from front to back.

3. The range hood of claim 2, wherein: when the cigarette collecting mechanism is in the first position, the upper edge of the front side of the cigarette guide plate (31) is not higher than the lower edge of the baffle plate (32).

4. The range hood of claim 2, wherein: the air inlet (11) is arranged at the bottom of the fume collecting hood (1), and the bottom of the fume collecting hood (1) is also gradually inclined downwards from front to back so as to form a wedge-shaped structure.

5. The range hood according to any one of claims 1 to 4, wherein: the smoke guide plate (31) can correspond air intake (11) setting with going up and down, baffle (32) can set up the bottom front side at collection petticoat pipe (1) with overturning, extend about the axis of rotation of baffle (32), when range hood is at off-duty, hold together cigarette mechanism and be in smoke guide plate (31) and close air intake (11), baffle (32) transversely extend and draw in the second position in collection petticoat pipe (1) bottom.

6. The range hood of claim 5, wherein: gather cigarette mechanism and still include the link gear who is used for driving cigarette guide plate (31) to go up and down and baffle (32) upset, link gear includes actuating mechanism (331), is driven and around self axis pivoted transfer line (336) by actuating mechanism (331), transfer line (336) extend in the left and right sides direction, connect through elevating system (334) between cigarette guide plate (31) and transfer line (336) and realize going up and down, connect through tilting mechanism (335) between baffle (32) and transfer line (336) and realize the upset.

7. The range hood of claim 6, wherein: elevating system (334) are including dwang (3341), first slider (3342), first slider guide rail (3343), lifter (3346) and stores pylon (3347) that can the up-and-down motion, dwang (3341) extends on the front and back direction, the one end and the transfer line (336) of dwang (3341) are connected and are driven by transfer line (336) and rotate, the other end rotates with first slider (3342) to be connected, first slider guide rail (3343) and lifter (3346) fixed connection, stores pylon (3347) will lead cigarette board (31) and lifter (3346) and be connected.

8. The range hood of claim 7, wherein: the lifting mechanism (334) further comprises a limiting guide rail arranged on the side wall of the fan frame (2), and the lifting rod (3346) is arranged in a sliding mode relative to the limiting guide rail.

9. The range hood of claim 6, wherein: the turnover mechanism (335) comprises a rotating shaft (3351), a second slider (3352) and a second slider guide (3353), wherein the rotating shaft (3351) is bent to form a left extending part (33511) and a right extending part (33512), the left extending part (33511) and the right extending part (33511) can be connected with the transmission rod (336) and driven by the transmission rod (336) to rotate, the second slider guide (3353) is arranged on one side of the baffle plate (32) facing upwards in the second position and extends in the front-back direction, the second slider (3352) is rotatably connected with one end, far away from the left extending part (33511), of the front-back extending part (33512) of the rotating shaft (3351), and the second slider (3352) is slidably connected with the second slider guide (3353).

10. The range hood of claim 6, wherein: the driving mechanism (331) is a double-output-shaft motor, the two driving rods (336) are symmetrically arranged left and right, each output end of the driving mechanism (331) is connected with the corresponding driving rod (336) through a first speed change gear set (332), each driving rod (336) is connected with a lifting mechanism (334), and the end part, far away from the driving mechanism (331), of each driving rod (336) is connected with the turnover mechanism (335) through a second speed change gear set (333).