CN215863590U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, which comprises a box body, wherein a first air inlet is formed in the front side of the box body, a smoke baffle plate capable of opening or closing the first air inlet is arranged at the first air inlet, and the range hood is characterized in that: the bottom of the box body is provided with a second air inlet, and the smoke baffle is capable of opening or closing the first air inlet in a front-back translation mode. Compared with the prior art, the utility model has the advantages that: the smoke baffle plate opens and closes the air inlets in a translation mode, the distance between the smoke baffle plate and a user can be increased in the opening state, so that the risk of shielding the sight line is reduced, the smoke collecting cavity is increased, the smoke suction effect is improved, and the two air inlets are matched to adapt to different cooking states; the smoke baffle keeps vertical translation and is vertical to the horizontal direction, the risk of shielding the sight can be further reduced, the smoke gathering cavity is further enlarged, and the oil smoke absorption effect is improved.

Description

Fume exhaust fan

Technical Field

The utility model 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 works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

In order to improve the effect of oil smoke absorption, it is common practice to increase the area covered by the air inlet. The range hood disclosed in the chinese patent with the application number of 202020176183.3 comprises a housing provided with a main air inlet, an air suction device mounted on the housing, and an oil cup arranged at the bottom of the housing, wherein an auxiliary air inlet spaced from the main air inlet is further arranged on the housing, a panel capable of opening and closing the auxiliary air inlet is pivoted on the housing, and the auxiliary air inlet comprises a plurality of second meshes arranged in an array.

In order to enable the air inlet to cover a larger area, the panel on the whole front side is designed to be overturned to form the thin range hood which has a light and thin appearance. However, the range hood has the following problems: 1. in order to ensure that the panel does not shield the sight when the range hood works, the turning and opening angle of the panel needs to be controlled, but the turning control angle can cause the range hood to have a smaller smoke gathering area and a poorer smoke absorption effect; 2. in order to improve the oil fume absorption effect, when the turning angle of the panel is increased, the distance between the smoke baffle and a person is reduced, and the customer is oppressed while the sight line is shielded.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a range hood aiming at the defects in the prior art, which can ensure better oil smoke absorption effect and avoid blocking sight.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes the box, the front side of box is formed with first air intake, first air intake department is provided with the cigarette board that keeps off that can open or close first air intake, its characterized in that: the bottom of the box body is provided with a second air inlet, and the smoke baffle is capable of opening or closing the first air inlet in a front-back translation mode.

In order to facilitate the automatic driving of the smoke baffle plate and better avoid the blocking of the sight, the range hood further comprises a movement mechanism for driving the smoke baffle plate, and the smoke baffle plate is kept vertical in the driving process of the movement mechanism.

Preferably, in order to stably drive the smoke baffle with a larger area, the first air inlet is provided with a smoke collecting plate, and the smoke baffle is positioned at the front side of the smoke collecting plate; the motion mechanism comprises a first connecting rod and a second connecting rod, the first connecting rod penetrates through the cigarette holding plate from the rear side of the cigarette holding plate and is connected with the cigarette holding plate in a rotating mode, the second connecting rod penetrates through the cigarette holding plate from the rear side of the cigarette holding plate and is connected with the cigarette holding plate in a rotating mode, the first connecting rod and the second connecting rod are connected with the cigarette blocking plate in a vertically sliding mode and are connected with the cigarette holding plate in a rotating mode, and the rotating shafts of the first connecting rod and the second connecting rod extend in the left-right direction.

In order to facilitate the rotation of the driving connecting rod, the movement mechanism further comprises a driving mechanism, one of the first connecting rod and the second connecting rod is driven by the driving mechanism to rotate relative to the cigarette collecting plate, and the other of the first connecting rod and the second connecting rod rotates along with the cigarette collecting plate.

In order to facilitate linkage of the first connecting rod and the second connecting rod, the movement mechanism further comprises a third connecting rod, the driving mechanism is a linear driving module, one end of the first connecting rod is connected with the output end of the driving mechanism in a rotating mode, the other end of the first connecting rod is connected with the smoke blocking plate, two ends of the third connecting rod are respectively connected with the first connecting rod and the second connecting rod in a rotating mode, the rotating shaft extends in the left-right direction, one end of the second connecting rod is connected with the third connecting rod, and the other end of the second connecting rod is connected with the smoke blocking plate.

In order to facilitate the arrangement of the driving mechanism, a first support frame is fixed on the inner side of the rear side wall of the box body, and the driving mechanism is connected with the first support frame.

In order to facilitate the conversion of the rotation of the connecting rod into the translation of the smoke baffle, the smoke baffle is respectively provided with a first smoke baffle bracket and a second smoke baffle bracket which are arranged at intervals up and down towards the inner side in the box body, and the first smoke baffle bracket is positioned below the second smoke baffle bracket, a first guide groove which extends vertically is arranged on the first smoke baffle bracket, a second guide groove which extends vertically is arranged on the second smoke baffle bracket, a first connecting pin is arranged at the end part of the first connecting rod, a second connecting pin is arranged at the second end of the second connecting rod, the first connecting pin and the second connecting pin both extend in the left-right direction, the first connecting pin is connected with the first guide groove in a sliding mode, the second connecting pin is connected with the second guide groove in a sliding mode, and the first connecting rod and the second connecting rod can rotate relative to the corresponding smoke baffle plate supports.

In order to guide the translation of the smoke baffle, the moving mechanism further comprises a guide rail assembly, the guide rail assembly comprises a first guide rail and a second guide rail, the first guide rail and the second guide rail are connected in a sliding mode and can slide relatively in the front and back directions, the front end and the back end of the first guide rail are respectively connected and fixed with the smoke baffle and the rear side of the box body, and the second guide rail is connected and fixed with the smoke baffle.

The cigarette plate is characterized in that a second support frame is fixed on the inner side of the cigarette plate for facilitating connection of the connecting rod and the cigarette plate, a first support seat and a second support seat are further arranged on the second support frame, the two support seats are fixed on the second support frame at intervals up and down, the first support seat is located below the second support seat, the first connecting rod is connected with the first support seat in a rotating mode, the second connecting rod is connected with the second support seat in a rotating mode, and therefore the first connecting rod and the second connecting rod are connected with the cigarette plate in a rotating mode.

For making the synchronous action of keeping off the cigarette board left and right sides, motion includes initiative end and the driven end that sets up in the cigarette board left and right sides of keeping off, the initiative end includes first connecting rod and second connecting rod, the driven end also includes first connecting rod and second connecting rod, the initiative end still includes actuating mechanism, one of them is driven by actuating mechanism and can be held together the cigarette board relatively and rotate in first connecting rod and the second connecting rod, another rotates thereupon in first connecting rod and the second connecting rod, be connected with first synchronizing shaft between the respective first connecting rod of initiative end and driven end, be connected with the second synchronizing shaft between the respective second connecting rod of initiative end and driven end.

Preferably, in order to make full use of the double air inlets and improve the oil smoke absorption effect, a fan system is arranged in the box body, the fan system is a double air inlet fan, and the air inlets of the fan system face forwards and backwards respectively.

Compared with the prior art, the utility model has the advantages that: the smoke baffle plate opens and closes the air inlets in a translation mode, the distance between the smoke baffle plate and a user can be increased in the opening state, so that the risk of shielding the sight line is reduced, the smoke collecting cavity is increased, the smoke suction effect is improved, and the two air inlets are matched to adapt to different cooking states; the smoke baffle keeps vertical translation and is vertical to the horizontal direction, the risk of shielding the sight can be further reduced, the smoke gathering cavity is further enlarged, and the oil smoke absorption effect is improved.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention in a closed state (with a smoke barrier closed);

FIG. 2 is a schematic view of a hidden smoke baffle of the range hood according to the embodiment of the utility model;

FIG. 3 is a sectional view of a range hood according to an embodiment of the present invention in a closed state;

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

fig. 5 is a schematic view of a movement mechanism of a range hood in a closed state according to an embodiment of the present invention;

fig. 6 is an exploded structural schematic view of a movement mechanism of a range hood in a closed state according to an embodiment of the present invention;

fig. 7 is a schematic view of the opening state (the smoke barrier is opened) of the range hood according to the embodiment of the utility model;

fig. 8 is a sectional view of the range hood according to the embodiment of the present invention in an opened state;

fig. 9 is a schematic view of a movement mechanism of the range hood in an open state according to the embodiment of the present invention.

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, a range hood includes a box 1 and a fan system 2 disposed in the box 1. The fan system 2 adopts a double-air-inlet fan, the air inlets of which are respectively forward and backward, and the forward air inlets form a main air inlet area. Preferably, the fan system 2 employs a centrifugal fan.

The casing 1 may have a substantially hollow rectangular parallelepiped shape, and the dimensions in the left-right direction, the front-back direction, and the up-down direction are the length, width, and height of the casing 1, respectively. The front side of the box body 1 is open and a first air inlet 11 is formed at the open, and the oil smoke entering from the first air inlet 11 is sucked by the air inlet at the front side of the fan system 2. The first air inlet 11 is provided with a cigarette collecting plate 13, and the cigarette collecting plate 13 can gradually sink towards the inside of the box body 1 from the periphery to the middle, so as to form a cigarette collecting cavity. Can set up in first air intake 11 and keep off cigarette board 3, keep off cigarette board 3 and be located and hold together cigarette board 13 front side to improve and hold together the effect of cigarette, prevent that the oil smoke from escaping. The smoke barrier 3 is kept in a vertical state. The box body 1 further comprises a bottom plate 14 positioned at the bottom, a second air inlet 12 is formed in the bottom plate 14, and the second air inlet 12 is kept normally open or a similar smoke baffle structure can be arranged to open and close.

Referring to fig. 2 to 6, the range hood further includes a moving mechanism for driving the smoke barrier 3, the smoke barrier 3 is driven to move by pushing horizontally, and the smoke barrier 3 is kept vertical in the moving process, so that the smoke barrier 3 opens or closes the first air inlet 11 by translating back and forth. The motion mechanism can adopt a common linear driving module, such as a combination of an electric push rod and a motor screw rod nut. In the present embodiment, the movement mechanism includes a driving mechanism 41, a first link 42, a second link 43, a third link 44, and a rail assembly 45.

A first supporting frame 15 is fixed on the inner side of the rear side wall of the box body 1, a second supporting frame 16 is fixed on the inner side of the cigarette holding plate 13, and the two supporting frames can vertically extend. In the present embodiment, the driving mechanism 41 is an electric push rod, and is connected and fixed with the first support frame 15 through the supporting leg 411, the electric push rod gradually inclines upwards from front to back, and the driving mechanism 41 may also adopt any other existing linear driving module. The first link 42, the second link 43 and the third link 44 respectively have opposite first and second ends, the output end of the driving mechanism 41 is rotatably connected with the first end of the first link 42, the first end of the third link 44 is rotatably connected with the first end of the first link 42, the driving mechanism 41 and the third link 44 can be connected at the same position of the first link 42, and the second end of the third link 44 is rotatably connected with the first end of the second link 43. The rotating shafts at the rotating joints of the connecting rods extend in the left-right direction. Alternatively, the driving mechanism 41 may be a driving device that outputs torque, such as a motor.

The inner sides of the smoke baffle 3 facing the inside of the box body 1 are respectively provided with a first smoke baffle bracket 31 and a second smoke baffle bracket 32 which are arranged at intervals up and down, and the first smoke baffle bracket 31 is positioned below the second smoke baffle bracket 32. In the closed state of the smoke barrier 3, the first smoke barrier bracket 31 and the second smoke barrier bracket 32 penetrate through the smoke collecting plate 13 and enter the inside of the box body 1. A first guide groove 311 extending vertically is formed in the first cigarette retaining plate bracket 31, and a second guide groove 321 extending vertically is formed in the second cigarette retaining plate bracket 32. The second end of the first link 42 is provided with a first connecting pin 421, the second end of the second link 43 is provided with a second connecting pin 431, the first connecting pin 421 and the second connecting pin 431 both extend in the left-right direction, the first link 42 can rotate around the first connecting pin 421, and the second link 43 can rotate around the second connecting pin 431. The first connecting pin 421 is slidably connected to the first guide slot 311 and vertically slidable along the first guide slot 311, and the second connecting pin 431 is slidably connected to the second guide slot 321 and vertically slidable along the second guide slot 321. In this embodiment, the two guide grooves are through grooves, and each connecting pin passes through the corresponding guide groove. Blocking structures may be provided to prevent the connecting pins from disengaging from the corresponding guide slots. The pins at other connections are not shown in the figures.

The second support frame 16 is further provided with a first support seat 481 and a second support seat 482, the two support seats are fixed on the second support frame 16 at intervals up and down, wherein the first support seat 481 is located below the second support seat 482, the first connecting rod 42 is rotatably connected with the first support seat 481, the second connecting rod 43 is rotatably connected with the second support seat 482, and the rotating shafts at the connection positions extend in the left-right direction. Therefore, the joint between the first link 42 and the first support seat 481 is the rotation center of the first link 42, and the joint between the second link 43 and the second support seat 482 is the rotation center of the second link 43. The connecting position of each connecting rod and the corresponding supporting seat can be the middle position of each connecting rod. The first connecting rod 42 and the second connecting rod 43 both penetrate through the cigarette collecting plate 13 from the rear side of the cigarette collecting plate 13 to the front side.

The rail assembly 45 includes a first rail assembly 451 and a second rail assembly 452, and the first rail assembly 451 and the second rail assembly 452 are slidably coupled so as to be relatively slidable in the front-rear direction. The front end and the rear end of the first guide rail assembly 451 are respectively connected and fixed with the cigarette holding plate 13 and the rear side of the box body 1, in this embodiment, the rear end is connected and fixed with the first support frame 15, and the front end is connected and fixed with the second support frame 16. The second guide assembly 452 is fixedly connected to the second cigarette retaining plate bracket 32 so as to guide the movement of the cigarette retaining plate 3.

In order to make the smoke barrier 3 move in the same direction, the moving mechanism includes a driving end and a driven end respectively disposed at the left and right sides of the smoke barrier 3, and the driven end is identical to the driving end except for the lack of the driving mechanism 41. To ensure synchronous action of the driving end and the driven end, the motion mechanism further includes a first synchronizing shaft 46 and a second synchronizing shaft 47, each extending in the left-right direction. Both ends of the first synchronizing shaft 46 are rotatably provided in the first supporting seat 481, and the first synchronizing shaft 46 is rotatable about its axis. Both ends of the second synchronizing shaft 47 are rotatably disposed in the second support base 482, and the second synchronizing shaft 47 is rotatable about its axis. The first synchronizing shaft 46 passes through a portion of the first link 42 between both ends and is fixedly coupled, and the second synchronizing shaft 47 passes through a portion of the second link 43 between both ends and is fixedly coupled.

When the oil smoke is not large, referring to fig. 1 to 3, the output end of the driving mechanism 41 is located at an extended position, the smoke barrier 3 is located at a position closest to the box 1 at this time, the first air inlet 11 is closed, and at this time, the oil smoke completely enters the box 1 from the second air inlet 12 and enters the fan system 2 from the air inlet facing backward of the fan system 2.

When the oil smoke is large, referring to fig. 7 to 9, the driving mechanism 41 is activated to retract the output end, so that the first end of the first link 42 is driven to rotate backwards and upwards, and the second end of the first link 42 slides downwards along the first guide slot 311 and rotates relative to the first connecting pin 421, when the first link 42 rotates, the first synchronizing shaft 46 rotates, the first link 42 at the driven end is driven to rotate synchronously, and simultaneously the first ends of the third links 44 at the driving end and the driven end both rotate backwards and upwards, and the first ends of the corresponding second links 43 are driven to rotate backwards and upwards, so that the second ends of the second links 43 slide downwards along the second guide slots 321 and rotate relative to the second connecting pins 431, and when the second links 43 rotate, the second synchronizing shaft 47 ensures that the two second links 43 move synchronously. Therefore, the first connecting rod 42 and the second connecting rod 43 push the smoke baffle 3 outwards, the guide rail assembly 45 limits the movement path of the smoke baffle 3 to move forwards, the first air inlet 11 is opened, the oil smoke part enters the box body 1 from the first air inlet 11 and enters the fan system 2 from the forward air inlet of the fan system 2, and the oil smoke part enters the box body 1 from the second air inlet 12 and enters the fan system 2 from the backward air inlet of the fan system 2.

When the smoke barrier 3 needs to be closed, the driving mechanism 41 only needs to be operated reversely.

Alternatively, the first link 42 and the first link pin 421 may be fixed, the first link pin 421 may be rotated with respect to the first guide groove 311, the second link 43 and the second link pin 431 may be fixed, and the second link pin 431 may be rotated with respect to the second guide groove 321.

Keep vertical direction after keeping off cigarette board 3 and opening, consequently keep off cigarette board 3 and user's distance and want big for the distance of convertible fender cigarette board, the risk that shelters from the sight diminishes, holds together the cigarette chamber increase moreover, and the oil absorption cigarette effect improves.

Claims (11)

1. The utility model provides a range hood, includes box (1), the front side of box (1) is formed with first air intake (11), first air intake (11) department is provided with and keeps off cigarette board (3) that can open or close first air intake (11), its characterized in that: the bottom of the box body (1) is provided with a second air inlet (12), and the smoke baffle plate (3) can open or close the first air inlet (11) in a front-back translation mode.

2. The range hood of claim 1, wherein: the range hood also comprises a movement mechanism for driving the smoke baffle plate (3), and the smoke baffle plate (3) is kept vertical in the driving process of the movement mechanism.

3. The range hood of claim 2, wherein: a cigarette collecting plate (13) is arranged at the first air inlet (11), and the cigarette blocking plate (3) is positioned on the front side of the cigarette collecting plate (13); motion includes first connecting rod (42) and second connecting rod (43), first connecting rod (42) are passed by cigarette board (13) rear side and are held together cigarette board (13) and rotate with cigarette board (13) and be connected, second connecting rod (43) are passed by cigarette board (13) rear side and are held together cigarette board (13) and rotate with cigarette board (13) and be connected, first connecting rod (42) and second connecting rod (43) are connected with keeping off cigarette board (3) with sliding from top to bottom respectively and are rotated and be connected, the axis of rotation of first connecting rod (42) and second connecting rod (43) is extension in the left and right directions.

4. The range hood of claim 3, wherein: the movement mechanism further comprises a driving mechanism (41), one of the first connecting rod (42) and the second connecting rod (43) is driven by the driving mechanism (41) to rotate relative to the cigarette collecting plate (13), and the other of the first connecting rod (42) and the second connecting rod (43) rotates along with the cigarette collecting plate.

5. The range hood of claim 4, wherein: the motion still includes third connecting rod (44), actuating mechanism (41) are the straight line drive module, the one end of first connecting rod (42) rotates with the output of actuating mechanism (41) to be connected, the other end is connected with cigarette board (3), the both ends of third connecting rod (44) rotate with first connecting rod (42) and second connecting rod (43) respectively and are connected and the axis of rotation extends in the left and right directions, the one end and the third connecting rod (44) of second connecting rod (43) are connected, the other end is connected with cigarette board (3).

6. The range hood of claim 4, wherein: a first support frame (15) is fixed on the inner side of the rear side wall of the box body (1), and the driving mechanism (41) is connected with the first support frame (15).

7. The range hood of claim 3, wherein: the cigarette baffle (3) is provided with a first cigarette baffle bracket (31) and a second cigarette baffle bracket (32) which are arranged at an upper and lower interval towards the inner side in the box body (1) respectively, the first cigarette baffle bracket (31) is positioned below the second cigarette baffle bracket (32), the first cigarette baffle bracket (31) is provided with a first guide groove (311) which extends vertically, the second cigarette baffle bracket (32) is provided with a second guide groove (321) which extends vertically, the end part of the first connecting rod (42) is provided with a first connecting pin (421), the second end of the second connecting rod (43) is provided with a second connecting pin (431), the first connecting pin (421) and the second connecting pin (431) both extend in the left and right directions, the first connecting pin (421) is connected with the first guide groove (311) in a sliding manner, and the second connecting pin (431) is connected with the second guide groove (321) in a sliding manner, the first connecting rod (42) and the second connecting rod (43) can rotate relative to the corresponding smoke baffle plate brackets.

8. The range hood of claim 3, wherein: the moving mechanism further comprises a guide rail assembly (45), the guide rail assembly (45) comprises a first guide rail (451) and a second guide rail (452), the first guide rail (451) and the second guide rail (452) are connected in a sliding mode and can slide relatively in the front-back direction, the front end and the back end of the first guide rail (451) are fixedly connected with the cigarette collecting plate (13) and the rear side of the box body (1) respectively, and the second guide rail (452) is fixedly connected with the cigarette blocking plate (3).

9. The range hood of claim 3, wherein: the inboard of holding together cigarette board (13) is fixed with second support frame (16), still be provided with first supporting seat (481) and second supporting seat (482) on second support frame (16), fix on second support frame (16) about two supporting seats at the interval, wherein first supporting seat (481) are located the below of second supporting seat (482), first connecting rod (42) rotate with first supporting seat (481) and are connected, second connecting rod (43) rotate with second supporting seat (482) and are connected to first connecting rod (42) and second connecting rod (43) realize rotating with holding together cigarette board (13) and be connected.

10. The range hood of claim 3, wherein: the moving mechanism comprises a driving end and a driven end, wherein the driving end and the driven end are arranged on the left side and the right side of the smoke baffle (3), the driving end comprises a first connecting rod (42) and a second connecting rod (43), the driven end also comprises the first connecting rod (42) and the second connecting rod (43), the driving end further comprises a driving mechanism (41), one of the first connecting rod (42) and the second connecting rod (43) is driven by the driving mechanism (41) to rotate relative to the smoke baffle (13), the other of the first connecting rod (42) and the second connecting rod (43) rotates along with the smoke baffle, a first synchronizing shaft (46) is connected between the respective first connecting rods (42) of the driving end and the driven end, and a second synchronizing shaft (47) is connected between the respective second connecting rods (43) of the driving end and the driven end.

11. The range hood according to any one of claims 1 to 10, wherein: the air-conditioning fan is characterized in that a fan system (2) is arranged in the box body (1), the fan system (2) is a double-air-inlet fan, and air inlets of the fan system (2) face forwards and backwards respectively.

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