CN110375358B

CN110375358B - Fume exhaust fan

Info

Publication number: CN110375358B
Application number: CN201910567640.3A
Authority: CN
Inventors: 王潭; 唐兴旺; 茅忠群; 施旭娜
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2021-11-19
Anticipated expiration: 2039-06-27
Also published as: CN110375358A

Abstract

The invention discloses a range hood, which comprises a shell and an oil cup arranged at the bottom of the rear side of the shell, wherein an air inlet is formed in the shell, a smoke baffle plate capable of opening or closing the air inlet in a turnover manner is arranged at the air inlet of the shell, the rear end of the smoke baffle plate extends to the upper part of the oil cup, the range hood also comprises a motion mechanism for driving the smoke baffle plate to turn over, the motion mechanism comprises a linear driving module and a transmission mechanism, the transmission mechanism comprises a rocker and a sliding block driven by the linear driving module to move in the front-rear direction, one end of the rocker is relatively fixed with the shell, the other end of the rocker is hinged with the smoke baffle plate, the sliding block is hinged with the smoke baffle plate, and the hinged position of the rocker and the smoke baffle plate is positioned at the front side of the hinged position of the sliding block and the smoke baffle plate. Compared with the prior art, the invention has the advantages that: through setting up reasonable motion for keep off the cigarette board when opening, the lower extreme is by supreme upset down, has avoided taking place to interfere with the oil cup, so that ensure the normal work that keeps off the cigarette board.

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 the indispensable kitchen household electrical appliances in modern families. 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, and has more and more extensive application due to the advantages of neatness, lightness, small occupied space and the like; 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 existing side-draft range hood is generally provided with an air inlet on a panel, so that in order to avoid the problem that the air inlet is exposed out and not beautiful enough and oil smoke flows backward when the range hood does not work, the air inlet can be provided with a smoke baffle plate, and the range hood can also play a role of gathering smoke when in work. The suspension fixing structure of the smoke baffle plate of the range hood, disclosed in the Chinese patent with the application number of 201721592791.7, mainly comprises a range hood main body and the smoke baffle plate, wherein a smoke collecting cover is arranged on the range hood main body, a smoke collecting cavity is arranged above the smoke collecting cover, a smoke baffle assembly is arranged in the middle of the smoke collecting cavity and comprises a fixed part on the upper part and a detachable part on the lower part, the fixed part is an operating area, and the detachable part is the smoke baffle plate.

The range hood only has the smoke baffle part capable of being opened when in work, the area of the air inlet is seriously reduced, the effect of absorbing oil smoke is poor, and the oil smoke is easy to escape along the lower panel.

Therefore, a range hood capable of moving an air inlet downwards to increase the air inlet area is also available at present, for example, a side-draft range hood which is disclosed in chinese patent application No. 201710263663.6 and is capable of preventing smoke leakage and convenient to maintain comprises a shell and a front panel, wherein an air suction inlet is formed in the front panel, a liftable upper smoke baffle and a liftable lower smoke baffle are mounted on the front surface of the front panel, and two independent driving mechanisms for respectively driving the upper smoke baffle and the lower smoke baffle are arranged in the shell; the oil collecting cup is arranged at the bottom of the lower smoke baffle.

The range hood has the advantages that the movement stroke of the lower smoke baffle is limited, and the problem that oil smoke escapes along the lower smoke baffle still exists when the lower smoke baffle moves downwards; in addition, the lower smoke baffle needs to drive the oil cup to move downwards when moving downwards, so that the oil path of the range hood is influenced, and grease is dropped.

The range hood capable of simultaneously feeding air up and down comprises a main machine body and a volute component, wherein the volute component is positioned in a flue on the main machine body, and an upper air inlet communicated with the flue is formed in the main machine body; the main machine body is also provided with a lower air inlet communicated with the flue, and the height position of the lower air inlet is lower than that of the upper air inlet; the lower air inlet is provided with a lower smoke screen for opening and closing the lower air inlet.

Above-mentioned range hood adopts down to separate smoke screen upper end and host computer body articulated, the mode of lower extreme upset to open, however because in order to solve the oil circuit problem, the rear end (lower extreme) that separates the smoke screen down need be located the oil cup top, consequently adopts this kind of mode of opening to lead to taking place to interfere with the oil cup.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a range hood aiming at the problems in the prior art, wherein the range hood has reasonable movement mode of a smoke baffle plate, and can avoid interference with an oil cup.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes casing and the oil cup of setting in casing rear side bottom, the air intake has been seted up on the casing, the air intake department of casing is provided with the cigarette board that keeps off that can open or close the air intake with overturning, the rear end that keeps off the cigarette board extends to oil cup top, its characterized in that: the range hood further comprises a movement mechanism used for driving the smoke baffle, the movement mechanism comprises a linear driving module and a transmission mechanism, the transmission mechanism comprises a rocker and a sliding block driven by the linear driving module to move in the front-rear direction, one end of the rocker is relatively fixed with the position of the shell, the other end of the rocker is hinged with the smoke baffle, the sliding block is hinged with the smoke baffle, and the hinged position of the rocker and the smoke baffle is located on the front side of the hinged position of the sliding block and the smoke baffle.

In order to limit the moving path of the sliding block, the transmission mechanism further comprises a guide rail, the guide rail extends in the front-back direction, the sliding block is arranged in the guide rail in a sliding mode, one end of the rocker is hinged with the guide rail, and the hinged position of the rocker and the guide rail is located on the front side of the sliding block.

In order to facilitate the sliding block and the rocker to be respectively hinged with the smoke baffle, the transmission mechanism further comprises a first support and a second support, the first support and the second support are both arranged on the smoke baffle towards the inner side of the shell, the first support is positioned on the front side of the second support, the rocker is hinged with the first support, and the sliding block is hinged with the second support.

In order to avoid the situation that the rocker is deadly jacked and cannot rotate, a first central point is arranged at the joint of the rocker and the guide rail, a second central point is arranged at the joint of the first support and the rocker, a third central point is arranged at the joint of the sliding block and the second support, and when the smoke baffle is closed, the three central points are not collinear.

In order to facilitate the arrangement of the guide rails, the casing comprises support frames respectively arranged on the left side and the right side, each support frame comprises a support bottom plate, and the guide rails are fixed on the support bottom plates.

Preferably, in order to facilitate the sliding of the sliding block and the connection of the transmission mechanism and the smoke baffle, one side of the guide rail facing the inside of the casing is recessed towards the outside of the casing to form a guide groove, and the sliding block is arranged in the guide groove.

Preferably, the linear driving module includes the motor and is driven pivoted lead screw by the motor, drive mechanism has two that the structure is the same, and one of them drive mechanism is the initiative end, and another drive mechanism is the driven end, and two drive mechanism connect the left and right sides at the cigarette board that keeps off, and the drive mechanism who has the slider of being connected with the linear driving module is the initiative end, the lead screw sets up in the guide rail as the drive mechanism of initiative end, the lead screw also extends in the front and back direction to the rear end and the guide rail of lead screw rotate to be connected.

In order to avoid the oil smoke from escaping from the front side of the smoke baffle when the smoke baffle is opened, the air inlet of the casing and the position on the front side are also provided with a front cover plate, and the front cover plate is positioned above the smoke baffle and is smaller than the smoke baffle in the front-back direction.

In order to guide oil smoke and grease in the shell conveniently, a fan is arranged in the shell, an oil guide plate is arranged between the air inlet and the fan, and the rear end of the oil guide plate extends to the upper side of the oil cup.

Compared with the prior art, the invention has the advantages that: through the arrangement of a reasonable movement mechanism, the lower end of the smoke baffle is turned from bottom to top when the smoke baffle is opened, so that the smoke baffle is prevented from interfering with an oil cup, and the normal work of the smoke baffle is ensured; the non-collinear setting of motion mechanism pin joint has avoided appearing the dead point for keep off the cigarette board and can open smoothly.

Drawings

Fig. 1 is a schematic view of an open state of a smoke barrier of a range hood according to an embodiment of the invention;

FIG. 2 is a front-to-back cross-sectional view of the range hood of FIG. 1;

FIG. 3 is a left-right cross-sectional view of the extractor hood of FIG. 1;

FIG. 4 is a schematic view of a support frame of a range hood according to an embodiment of the present invention;

FIG. 5 is a schematic view of a smoke barrier and a moving mechanism thereof of the range hood of FIG. 1;

fig. 6 is a schematic view of a closed state of a smoke baffle of the range hood according to the embodiment of the invention;

FIG. 7 is a front-to-back cross-sectional view of the range hood of FIG. 6;

fig. 8 is a schematic view of a smoke barrier and a movement mechanism thereof of the range hood of fig. 6.

Detailed Description

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

Referring to fig. 1 to 5, a range hood, which is a top suction and side suction integrated machine or a side suction type, includes a housing 1, a box 2 disposed above the housing 1, and a fan 3 disposed in the box 2. 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.

In this embodiment, taking the top suction and side suction integrated machine as an example, the bottom of the casing 1 is opened to form an air inlet 11, which is gradually inclined downward from front to back. The smoke baffle plate 4 is arranged at the air inlet 11 and can be driven by the movement mechanism to open or close the air inlet 11 in a turnover manner. When the range hood is of a side-draft type, the air inlet 11 is formed in the front side of the machine shell 1. Compared with the common range hood of the type, the panel is usually arranged at the bottom or the front side of the machine shell 1, the air inlet is formed in the panel, and the smoke baffle is turned over relative to the panel, so that the area of the air inlet 11 is increased, the air inlet 11 is moved downwards, the smoke can be sucked more conveniently, and the smoke is prevented from escaping along the lower panel.

An oil cup 5 is arranged at the bottom of the rear side of the machine shell 1, and the rear end part of the smoke baffle 4 extends to the upper part of the oil cup 5. The position in casing 1, between being located air intake 11 and fan 3 is provided with leads oiled-plate 6, leads oiled-plate 6 and extends to the top of oil cup 5 behind the preceding side direction in the casing 1, can be with the leading-in oil cup 5 of the grease of casing 1, box 2 and fan 3 drippage from this in, lead and offer the opening that corresponds with the air intake of fan 3 on the oiled-plate 6 to the oil supply cigarette passes through. A front cover plate 13 is further disposed at the front side of the air inlet 11 of the casing 1, and extends backward from the front side of the casing 1, and the extending direction of the front cover plate is the same as the extending direction of the air inlet 11. The front cover 13 is located above the smoke barrier 4 and has a dimension in the front-rear direction smaller than that of the smoke barrier 4.

Because the rear end of the smoke baffle 4 is positioned above the oil cup 5, in order to avoid the smoke baffle 4 interfering with the oil cup 5 in the overturning process, the moving mechanism comprises a driving mechanism and two transmission mechanisms, the driving mechanism is arranged on one of the transmission mechanisms, and therefore the transmission mechanism is a driving end, and the other transmission mechanism is a driven end. The driving mechanism is a linear driving module 41, and in this embodiment, includes a motor 411 and a lead screw 412, where the motor 411 is used to drive the lead screw 412 to rotate, and the lead screw 412 gradually extends downward from front to back.

Each transmission mechanism comprises a first seat 42, a rocker 43, a second seat 44, a slider 45 and a guide 46. Two guide rails 46 are provided on the left and right sides in the cabinet 1 above the air intake 11, and each guide rail 46 extends obliquely in the front-rear direction. The inclination direction of the screw 412 and the guide rail 46 is the same as the air inlet 11, and when the air inlet 11 is not inclined, the screw 412 and the guide rail 46 are not inclined.

The output of the motor 411 extends into the guide rails 46 and the lead screw 412 is arranged in one of the guide rails 46. One end of the screw 412 is connected to the output end of the motor 411 (two bevel gears may be disposed between the two to complete an angled, preferably perpendicular connection), and the other end of the screw 412 is rotatably connected to the rear end of the guide rail 46. The guide rail 46 is recessed toward the inside of the housing 1 toward the outside of the housing 1 to form a guide groove 461, and the lead screw 412 and the slider 45 are disposed in the guide groove 461. The guide groove 461 also extends in the front-rear direction.

In order to provide the guide rails 46, the casing 1 includes support frames 12 respectively disposed at the left and right sides, and the guide rails 46 are fixedly disposed on the corresponding support frames 12. Each support frame 12 includes a support base 121 adapted to the guide rail 46, and a first connection plate 122 fixed to the front and rear side walls of the cabinet 1. The oil guide plate 6 is located between the two support bottom plates 121, and the support frame 12 further includes a second connecting plate 123 for fixing with the oil guide plate 6, and the second connecting plate 123 is disposed on one side of the support bottom plates 121 facing the oil guide plate 6.

The first support 42 is disposed on one side of the smoke barrier 4 facing the inside of the casing 1, preferably, two first supports 42 are respectively disposed on the smoke barrier 4 near the middle of the left and right sides, and the connecting position defines the opening angle of the smoke barrier 4. One end of the rocker 43 is hinged to the front end of the guide rail 46. The second support 44 is disposed on a side of the smoke barrier 4 facing the inside of the casing 1, and preferably, two second supports 44 are disposed at positions of the smoke barrier 4 near rear ends of the left and right sides, respectively. The slider 45 is disposed in the guide groove 461 and is movable along the guide groove 461. One end of the rocker 43 may be hinged to the housing 1 instead of the guide rail 46, as long as the position of the end of the rocker 43 and the housing 1 is fixed relatively.

A slider 45 as a transmission mechanism of an active end is provided on the outer periphery of the lead screw 412, and the slider 45 is screw-coupled with the lead screw 412, whereby the slider 45 can linearly move along the lead screw 412 when the lead screw 412 rotates. The slider 45 is also hinged to the second seat 44. A through slot 124 is formed between the support base plate 121 and the second connecting plate 123, and one end of the rocker 43 and the second support 44 can both pass through the through slot 124 and be connected with the guide rail 46 or the sliding block 45.

In order to avoid dead points of the transmission mechanism, when the smoke barrier 4 is closed, the connection between the rocker 43 and the guide rail 46 has a first center point a, the connection between the first support 42 and the rocker 43 has a second center point B, and the connection between the slider 45 and the second support 44 has a third center point C, see fig. 8. If A, B, C three-point collinearity is the coincidence of line AB and BC when keeping off the cigarette board 4 and closing, then start as the range hood, when keeping off the cigarette board 4 and opening, because drive mechanism's transmission angle is 0, slider 45 acts on the follower through keeping off the cigarette board 4 this moment and the power on rocker 43 just passes through its centre of revolution promptly articulated central point A promptly, then appear and can not make rocker 43 pivoted "top dead" phenomenon (this kind of position of mechanism is called the dead point), lead to keeping off the cigarette board 4 and can not open, the range hood can not normally work, lose the oil absorption cigarette function. Therefore, in the invention, when the smoke baffle 4 is closed, the A, B, C three points are not collinear, i.e. the line AB is not coincident with the line BC, so that the dead point of the mechanism is avoided, and the normal opening of the smoke baffle 4 is ensured when the range hood is started.

When the range hood does not work, the smoke baffle 4 is in a state of closing the air inlet 11, and the inclination direction of the smoke baffle 4 is consistent with that of the air inlet 11, which is shown in fig. 6 and 7; when the range hood works, the driving mechanism is started, the motor 411 drives the screw rod 412 to rotate, the slider 45 on the driving end is driven to move forwards and linearly along the screw rod 412, meanwhile, the second support 44 can rotate relative to the slider 45, the rear side of the smoke baffle plate 4 is driven to turn forwards and upwards (the transmission mechanism on the other side is used as a driven end and is driven to synchronously move), one end of the rocker 43 connected with the guide rail 46 rotates backwards, the front side of the smoke baffle plate 4 turns forwards and downwards until the smoke baffle plate 4 is completely opened, and at the moment, the surface of the smoke baffle plate 4 facing the machine shell 1 is attached to the rear side of the front cover plate 13, so that oil smoke can be prevented from escaping from the upper part, which is shown in fig. 1 and fig. 2. When the range hood stops working, the motor 411 drives the screw rod 412 to rotate reversely, drives the slider 45 on the driving end to move linearly backward along the screw rod 412, drives the rear side of the smoke baffle plate 4 to turn backward and downward (the transmission mechanism on the other side is used as a driven end and is driven to move synchronously), the end of the rocker 43 connected with the guide rail 46 rotates forward, and the front side of the smoke baffle plate 4 turns backward and upward until the smoke baffle plate 4 is completely closed, and returns to the initial state.

The range hood of the invention combines the traditional smoke baffle and the lower panel into a whole, and when the smoke baffle and the lower panel of the traditional range hood are combined into a whole, the smoke baffle interferes with the oil cup when being overturned and can not be opened. The invention adopts the movement mode that the rear end of the smoke baffle plate 4 is turned upwards and forwards when the smoke baffle plate 4 is opened, so that the rear end of the smoke baffle plate 4 can avoid interfering with the oil cup 5 in the movement process, the area of the air inlet is increased and the smoke collecting area is enlarged while the air inlet moves downwards, the problem that the oil smoke of the traditional range hood escapes along the lower panel is solved, and meanwhile, when the smoke baffle plate 4 is completely opened, the bottom of the smoke baffle plate is attached to the front cover plate 13, so that the oil smoke is prevented from escaping from the upper part, and the oil smoke can escape everywhere. In addition, the oil guide plate 6 in the range hood has the functions of smoke guide and oil guide.

Claims

1. The utility model provides a range hood, includes casing (1) and oil cup (5) of setting in casing (1) rear side bottom, air intake (11) have been seted up on casing (1), air intake (11) department of casing (1) is provided with can open or close cigarette board (4) of keeping off of air intake (11) with overturning, the rear end that keeps off cigarette board (4) extends to oil cup (5) top, its characterized in that: the range hood further comprises a movement mechanism for driving the smoke baffle plate (4) to overturn, the movement mechanism comprises a linear driving module (41) and a transmission mechanism, the transmission mechanism comprises a rocker (43) and a sliding block (45) driven by the linear driving module (41) to move in the front-rear direction, one end of the rocker (43) is relatively fixed with the position of the casing (1), the other end of the rocker is hinged with the smoke baffle plate (4), the sliding block (45) is hinged with the smoke baffle plate (4), and the hinged position of the rocker (43) and the smoke baffle plate (4) is located on the front side of the hinged position of the sliding block (45) and the smoke baffle plate (4); the transmission mechanism further comprises a guide rail (46), the guide rail (46) extends in the front-rear direction, the sliding block (45) is arranged in the guide rail (46) in a sliding mode, one end of the rocker (43) is hinged to the guide rail (46), and the hinged position of the rocker (43) and the guide rail (46) is located on the front side of the sliding block (45).

2. The range hood of claim 1, wherein: the transmission mechanism further comprises a first support (42) and a second support (44), the first support (42) and the second support (44) are arranged on one surface, facing the inner side of the machine shell (1), of the smoke baffle plate (4), the first support (42) is located on the front side of the second support (44), the rocker (43) is hinged to the first support (42), and the sliding block (45) is hinged to the second support (44).

3. The range hood of claim 2, wherein: the connection part of the rocker (43) and the guide rail (46) is provided with a first central point (A), the connection part of the first support (42) and the rocker (43) is provided with a second central point (B), the connection part of the sliding block (45) and the second support (44) is provided with a third central point (C), and when the smoke baffle plate (4) is closed, the three central points are not collinear.

4. The range hood of claim 1, wherein: the casing (1) is including setting up support frame (12) in the left and right sides respectively, and every support frame (12) are including supporting baseplate (121), guide rail (46) are fixed on supporting baseplate (121).

5. The range hood of claim 1, wherein: the guide rail (46) is recessed towards one side of the inside of the machine shell (1) and one side of the outside of the machine shell (1) to form a guide groove (461), and the sliding block (45) is arranged in the guide groove (461).

6. The range hood of claim 1, wherein: linear drive module (41) include motor (411) and by motor (411) drive pivoted lead screw (412), drive mechanism has two that the structure is the same, and one of them drive mechanism is the initiative end, and another drive mechanism is the driven end, and two drive mechanism connect the left and right sides at cigarette board (4), and the drive mechanism that has slider (45) of being connected with linear drive module (41) is the initiative end, lead screw (412) set up in drive mechanism's as the initiative end guide rail (46), lead screw (412) also extend in the front and back direction to the rear end and the guide rail (46) of lead screw (412) rotate to be connected.

7. The range hood according to any one of claims 1 to 6, wherein: the air inlet (11) of the machine shell (1) is provided with a front cover plate (13) at the position located on the front side, and the front cover plate (13) is located above the smoke baffle plate (4) and is smaller than the smoke baffle plate (4) in the front-back direction.

8. The range hood according to any one of claims 1 to 6, wherein: the oil guide device is characterized in that a fan (3) is arranged in the machine shell (1), an oil guide plate (6) is arranged between the air inlet (11) and the fan (3), and the rear end part of the oil guide plate (6) extends to the position above the oil cup (5).