CN111006272A

CN111006272A - Fume exhaust fan

Info

Publication number: CN111006272A
Application number: CN202010006588.7A
Authority: CN
Inventors: 王潭; 卢翼天; 茅忠群; 施旭娜
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-04-14
Anticipated expiration: 2040-01-03
Also published as: CN111006272B

Abstract

The invention discloses a range hood, which comprises a shell, wherein an air inlet is formed in the shell, the front side of the shell is open, a smoke guide plate assembly is arranged at the opening of the front side of the shell, the smoke guide plate assembly comprises two first smoke guide plates and two second smoke guide plates which are arranged in parallel, the first smoke guide plates are positioned in the middle and cover the air inlet, one second smoke guide plate is positioned on the left side of the first smoke guide plate on the left side, the other second smoke guide plate is positioned on the right side of the first smoke guide plate on the right side, the first smoke guide plates are rotatably connected with the shell through rotating shafts extending longitudinally, so that the first smoke guide plates can independently rotate relative to the shell, the rotating shafts of the two first smoke guide plates are close to each other, and the second smoke guide plates can independently and longitudinally move relative to the shell. Compared with the prior art, the invention has the advantages that: the conversion of a single air inlet, a double air inlet, a three air inlet and a four air inlet can be realized, the area of the air inlet can be effectively increased, and the oil smoke absorption effect is improved.

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 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.

Currently, the range hoods commonly available on the market include a top suction type and a side suction type. The side-suction type range hood has the advantages that the side-suction type range hood has a power source close to a cooking bench, most of oil smoke close to the cooking bench is sucked away in an arc-shaped mode, the side-suction type range hood is thin in body and not easy to touch during operation, and in a cooking state with small oil smoke amount, due to the fact that the installation height of the side-suction type range hood is low, a negative pressure area is close to a smoke source, and the oil smoke.

In order to further improve the oil smoke absorption effect, a smoke guide plate is usually disposed at the air inlet, for example, in the side-draft range hood disclosed in chinese patent No. 201721255538.2, the smoke guide plate is disposed in front of the air inlet. Most of the existing range hoods with the smoke guide plates are as shown above and are a whole plate, and the air inlet of the smoke guide plate is single, so that oil smoke far away from the air inlet is easy to escape, and the air inlet cannot be adjusted according to the use condition of the double cooking ranges; in addition, if the smoke guide plate is a large plane, the performance of the fan is stressed, more air quantity is lost, noise is high, the rapid oil smoke is poor in capture, and the oil smoke is easy to leak.

Some patents also disclose smoke guide plates with other structures, such as a side-suction type range hood disclosed in chinese patent with application number 201520827362.8, which includes a driving device, a first smoke guide plate and a second smoke guide plate, wherein the driving device includes a push-pull rod, and both sides of the second smoke guide plate are respectively provided with a first air inlet and a second air inlet which can be sealed; the driving device is used for driving the push-pull rod to firstly push the first smoke guide plate to move to form a first air inlet when the first air inlet and the second air inlet are both in a closed state, and then pushing the first smoke guide plate and the second smoke guide plate to simultaneously move to form a second air inlet; and the driving device is also used for driving the push-pull rod to firstly pull the first smoke guide plate to move so as to seal the first air inlet when the first air inlet and the second air inlet are both in an opening state, and then pulling the first smoke guide plate and the second smoke guide plate to simultaneously move so as to seal the second air inlet.

Above-mentioned scheme, though with the smoke deflector segmentation design for the polylith, solved the single problem of current air intake to a certain extent, but air inlet area and air inlet form do not have very big improvement, still can oppress the fan, cause the performance of fan can not release completely, and the fan noise is big.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a range hood aiming at the defects of the prior art, increase the air inlet area, provide various air inlet modes, improve the oil smoke absorption effect and reduce the noise.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes the casing, be formed with the air intake in the casing, the front side of casing is uncovered form, the uncovered department of casing front side is provided with leads cigarette board subassembly, its characterized in that: the cigarette leading plate subassembly is including two first cigarette leading plates and two second cigarette leading plates that arrange side by side, first cigarette leading plate is located the centre and covers the air intake, and one of them second cigarette leading plate is located the left side of left first cigarette leading plate, and another second cigarette leading plate is located the right side of the first cigarette leading plate on right side, first cigarette leading plate rotates with the casing through the axis of rotation of longitudinal extension and is connected, makes first cigarette leading plate can rotate independently relative to the casing to the axis of rotation of two first cigarette leading plates is close to each other, the second cigarette leading plate can independent longitudinal movement relative to the casing.

Preferably, in order to facilitate that the first smoke guide plates can be automatically opened according to detection values such as the opening condition of the stove and the concentration of oil smoke, a first driving device for driving the first smoke guide plates to rotate relative to the shell is arranged on one side, facing the shell, of each first smoke guide plate.

Preferably, first drive arrangement's structure does, and every first drive arrangement includes first actuating mechanism, first connecting rod, second connecting rod and third connecting rod, first connecting rod and second connecting rod are horizontal extension, the one end of first connecting rod is connected and can be rotated by the drive of first actuating mechanism with first actuating mechanism's output, the other end of first connecting rod rotates with the one end of second connecting rod to be connected, the other end of second connecting rod rotates with the one end of third connecting rod to be connected, the other end of third connecting rod is connected fixedly with one side of first smoke deflector towards the casing.

In order to limit the position of the first connecting rod, each first driving device further comprises a fixed shell fixed in the shell, and one end, connected with the first driving mechanism, of the first connecting rod is further rotatably connected with the fixed shell.

Preferably, in order to facilitate that the second smoke guide plates can be automatically opened according to detection values such as the opening condition of the stove and the concentration of oil smoke, a second driving device for driving the second smoke guide plates to linearly move relative to the shell is arranged on one side, facing the shell, of each second smoke guide plate.

Preferably, the second driving devices are configured such that each second driving device includes a second driving mechanism and a slider, the second driving mechanism is a linear driving module, and the slider is disposed at an output end of the second driving mechanism and connected to a side surface of the corresponding second smoke guide plate facing the inside of the housing.

Preferably, the smoke guide plate assembly is provided with an oil guide plate towards the rear side in the shell at intervals, the air inlet is formed in the oil guide plate, the oil guide plate is connected with the inner wall of the shell, and an oil cup is arranged below the shell.

In order to facilitate the smoke guide plate to guide the grease condensed on the smoke guide plate downwards into the oil cup, the bottoms of the first smoke guide plate and the second smoke guide plate are inclined backwards and bent from top to bottom to form a chamfer.

For making the oil guide plate lead oil and lead the cigarette better, the bottom of leading the oil guide plate inclines to buckle from top to bottom and forms the portion of bending.

Compared with the prior art, the invention has the advantages that: the first smoke guide plate and the second smoke guide plate which act independently can realize the conversion of a single air inlet, a double air inlet, a three air inlet and a four air inlet, effectively increase the area of the air inlet, improve the effect of absorbing the oil smoke, enable the oil smoke to flow more smoothly, enable a negative pressure area to be lower through the air inlet formed by the second smoke guide plate and completely prevent the oil smoke from escaping from two sides along the smoke guide plate; the performance of the fan can be thoroughly released, so that the noise of the fan is reduced; the bottom of each smoke guide plate is inclined backwards from top to bottom, so that grease condensed on the smoke guide plates can be better guided downwards into the oil cup; the bottom of the oil guide plate is inclined from top to bottom, so that the functions of guiding smoke and oil can be better achieved.

Drawings

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

fig. 2 is a schematic view of a fully opened range hood according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of FIG. 1;

fig. 4 is a schematic view of a smoke guide plate assembly of the range hood and a driving device thereof according to the embodiment of the invention;

FIG. 5 is a schematic view of the first smoke guide plate of FIG. 1 and its driving device;

FIG. 6 is a schematic view of the first smoke guide plate of FIG. 2 and its driving device;

fig. 7 is a schematic view of a second smoke guide plate and a driving device thereof of the range hood according to the embodiment of the invention;

fig. 8 is a schematic view illustrating the first smoke guide plate on the left side of the range hood according to the embodiment of the invention opened;

fig. 9 is a schematic view illustrating the opening of the first smoke guide plate on the right side of the range hood according to the embodiment of the invention;

fig. 10 is a schematic view illustrating the range hood according to the embodiment of the present invention with two first smoke guide plates opened;

fig. 11 is a schematic view illustrating the first smoke guide plate and the second smoke guide plate on the left side of the range hood according to the embodiment of the invention being opened;

fig. 12 is a schematic view illustrating the range hood according to the embodiment of the present invention with the first smoke guide plate and the second smoke guide plate opened.

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 is a side-draft range hood, and includes a housing 1 and a smoke guide plate assembly. A fan system 6 can be arranged in the shell 1 so as to suck and discharge the generated oil smoke out of the shell. The front side of casing 1 is uncovered form, leads the uncovered department of cigarette board subassembly setting at casing 1. The opening of the shell 1 is inclined and extended from top to bottom, and the inclination direction of the smoke guide plate component is consistent with the opening of the shell 1. Lead the back side of cigarette board subassembly in towards casing 1, the interval is provided with and leads oiled-plate 5, leads oiled-plate 5 and casing 1's inner wall connection, has seted up air intake 51 on leading oiled-plate 5, can set up air intake circle 52 and filter screen 53 in air intake 51 department. The above structure is the prior art and is not described herein.

The smoke guide plate assembly comprises two first smoke guide plates 21 and two second smoke guide plates 22, which are arranged side by side at the front side opening of the housing 1. Wherein the two first smoke guide plates 21 are located in the middle and close to each other, so that when the two first smoke guide plates 21 are in a closed state, there is substantially no gap between the two first smoke guide plates 21. The two first smoke guide plates 21 together cover the air inlet 51 on the oil guide plate 5.

One of the second smoke guide plates 22 is located on the left side of the left first smoke guide plate 21, and the other second smoke guide plate 22 is located on the right side of the right first smoke guide plate 21. Each second smoke guide 22 is adjacent to the adjacent first smoke guide 21, so that when the smoke guide assembly is in a closed state, there is substantially no gap between the second smoke guide 22 and the adjacent first smoke guide 21, and in this state, the front sides of the first smoke guide 21 and the second smoke guide 22 are preferably flush and extend obliquely from top to bottom.

Referring to fig. 4 to 6, the upper and lower ends of the first smoke guide plate 21 are rotatably connected to the housing 1, and the rotating shaft 211 of each first smoke guide plate 21 extends longitudinally in the same direction as the first smoke guide plate 21. The rotation shafts 211 of the two smoke guide plates 21 are located on the sides close to each other. The range hood further comprises a first driving device 3 for driving the first smoke guide plate 21 to rotate. Each first smoke guide plate 21 is provided with a corresponding first driving means 3 on the side facing the inside of the housing 1, whereby the two first smoke guide plates 21 can be opened/closed synchronously or asynchronously.

Each first driving device 3 includes a first driving mechanism 31, a first link 32, a second link 33, a third link 34 and a fixing shell 35, wherein the first driving mechanism 31 is a rotation driving module, and the first driving mechanism 31 and the fixing shell 35 are respectively connected and fixed with the housing 1. The first link 32 and the second link 33 extend in a transverse direction, which is the direction of the range hood in the use state, and preferably extends in a horizontal direction. One end of the first link 32 is rotatably connected to the stationary housing 35 and is connected to an output end of the first driving mechanism 31, so that the first driving mechanism 31 can drive the first link 32 to rotate around the connection with the stationary housing 35. One end of the second link 33 is rotatably connected to one end of the first link 32, the other end is rotatably connected to one end of the third link 34, the other end of the third link 34 is connected to the side of the first smoke guide 21 facing the inside of the housing 1, and preferably, the third link 34 is perpendicular to the first smoke guide 21. Thus, when the first driving mechanism 31 is activated, the first smoke guide plate 21 can be driven to rotate relative to the housing 21 through the three connecting rods. First drive arrangement 3 can drive the left side tip of left first smoke deflector 21 and open forward, the right side tip of the first smoke deflector 21 on right side overturn forward and open, and rotation angle can be 0 ~ 90, not only has the effect of smoke deflector drainage, can make the air inlet area bigger moreover.

Referring to fig. 4 and 7, each second smoke guide 22 is movable up and down relative to the housing 1 along the direction of extension of the opening of the housing 1. In order to drive the second smoke guide plates 22 to move, a second driving device 4 is further arranged on one side of each second smoke guide plate 22 facing the inside of the shell 1. Each second driving device 4 includes a second driving mechanism 41 and a sliding block 42, the second driving mechanism 41 is a linear driving module, such as an electric push rod, an assembly of a motor and a screw rod, an assembly of a motor and a rack and pinion, an air pump, a hydraulic pump, etc., and the sliding block 42 is disposed at an output end of the second driving mechanism 41 and connected with a side surface of the second smoke guide plate 22 facing the inside of the housing 1. The output end is a part of the linear driving module for outputting power, and the specific connection position of the slide block 42 and the part for outputting power is not limited as long as the slide block 42 is connected with the part for outputting power. The second driving device 4 can drive the second smoke guide plate 22 to move upwards and move downwards to be closed.

The range hood of the invention can realize the conversion of a single air inlet, a double air inlet, a three air inlet and a four air inlet. When only the left (right) stove is opened, the middle left (right) first smoke guide plate 21 can be opened only when the oil smoke is small, see fig. 8 and 9. When the oil smoke is large, the left (right) first smoke guide plate 21 and the left (right) second smoke guide plate 22 can be opened at the same time, see fig. 11 and 12, so that the air inlet area is increased, and the oil smoke absorption effect is improved; when the left and right two ranges are both opened, when the oil smoke is small, only the two first smoke guide plates 21 in the middle can be opened, and when the oil smoke is large, the two first smoke guide plates 21 and the two second smoke guide plates 22 can be opened simultaneously, so that the area of the air inlet of the range hood is maximum, the oil smoke absorption effect is greatly improved, and the oil smoke can escape everywhere.

When the two first smoke guide plates 21 in the middle are opened, the two first smoke guide plates 21 in the middle have a certain inclination angle (relative to the plane where the second smoke guide plates 22 on the two sides are located), the air inlet 51 is divided into a left part and a right part, oil smoke on the two sides is led in along the inner side surfaces of the two first smoke guide plates 21 in the middle, the oil smoke is sucked into the fan system 6 and discharged, and the oil smoke on the two sides is prevented from being collided to influence the oil smoke suction effect. Under the condition that only the first smoke guide plate 21 is opened, part of the oil smoke (the oil smoke sucked from the upper part of the air inlet 51) is sucked into the range hood in a reverse manner (the oil smoke is sucked back after being diffused to the edges of the two sides), the flow guide of the first smoke guide plate 21 is not smooth, and the oil smoke escapes when the oil smoke is seriously diffused. Therefore, when the amount of oil smoke is large, the first smoke guide plate 21 and the corresponding second smoke guide plate 22 need to be opened, as shown in fig. 2, at this time, the negative pressure region is expanded to two sides and further expanded, and moves down to the side, so as to prevent the oil smoke from escaping along the bottoms of the two side plates, the oil smoke is sucked when the oil smoke is not spread in a large amount, and is rapidly discharged under the guiding action of the first smoke guide plate 21, the flow of the first smoke guide plate 21 is smooth, and in the state that the second smoke guide plate 22 is opened, the pressure of the fan system 6 is released, and the noise is reduced.

That is to say, under the cooperation of the first smoke guide plate 21 and the corresponding second smoke guide plate 22, the oil smoke is introduced more smoothly, the oil smoke is sucked and discharged when not being diffused seriously, and the air inlets formed by the oil smoke and the second smoke guide plate release the pressure of the fan system 6, thereby reducing the noise.

Referring to fig. 3, the bottoms of the first smoke guide plate 21 and the second smoke guide plate 22 are inclined from top to bottom and bent to form a chamfer 23, so that the accumulated oil on the smoke guide plate assembly can be guided into the oil cup 7 below the housing 1. The bottom of the oil guide plate 5 can be provided with a bending part 54 formed by inclining backwards from top to bottom and bending, so that smoke and oil can be better guided, the bending part 54 can be one section or two ends with different slopes, and the tail end of the bending part 54 can be fixedly connected with the shell 1.

Claims

1. The utility model provides a range hood, includes casing (1), be formed with air intake (51) in casing (1), the front side of casing (1) is uncovered form, the uncovered department of casing (1) front side is provided with leads cigarette board subassembly, its characterized in that: the smoke guide plate assembly comprises two first smoke guide plates (21) and two second smoke guide plates (22) which are arranged in parallel, the first smoke guide plates (21) are located in the middle and cover the air inlet (51), one second smoke guide plate (22) is located on the left side of the first smoke guide plate (21) on the left side, the other second smoke guide plate (22) is located on the right side of the first smoke guide plate (21) on the right side, the first smoke guide plates (21) are rotatably connected with the shell (1) through rotating shafts (211) extending longitudinally, so that the first smoke guide plates (21) can rotate relative to the shell (1) independently, the rotating shafts (211) of the two first smoke guide plates (21) are close to each other, and the second smoke guide plates (22) can move longitudinally relative to the shell (1) independently.

2. The range hood of claim 1, wherein: one side of each first smoke guide plate (21) facing the inside of the shell (1) is provided with a first driving device (3) for driving the first smoke guide plates (21) to rotate relative to the shell (1).

3. The range hood of claim 2, wherein: every first drive arrangement (3) includes first actuating mechanism (31), first connecting rod (32), second connecting rod (33) and third connecting rod (34), first connecting rod (32) and second connecting rod (33) are horizontal extension, the one end of first connecting rod (32) is connected and can be rotated by first actuating mechanism (31) drive with the output of first actuating mechanism (31), the other end of first connecting rod (32) rotates with the one end of second connecting rod (33) to be connected, the other end of second connecting rod (33) rotates with the one end of third connecting rod (34) to be connected, the other end and the first smoke deflector (21) of third connecting rod (34) are connected fixedly towards one side in casing (1).

4. The range hood of claim 3, wherein: each first driving device (3) further comprises a fixed shell (35) fixed in the shell (1), and one end, connected with the first driving mechanism (31), of the first connecting rod (32) is further rotatably connected with the fixed shell (35).

5. The range hood of claim 1, wherein: one side of each second smoke guide plate (22) facing the inside of the shell (1) is provided with a second driving device (4) for driving the second smoke guide plates (22) to move linearly relative to the shell (1).

6. The range hood of claim 5, wherein: each second driving device (4) comprises a second driving mechanism (41) and a sliding block (42), the second driving mechanism (41) is a linear driving module, and the sliding block (42) is arranged at the output end of the second driving mechanism (41) and is connected with the side surface, facing the inside of the shell (1), of the corresponding second smoke guide plate (22).

7. The range hood according to any one of claims 1 to 6, wherein: lead the tobacco lamina subassembly and be provided with towards rear side, interval in casing (1) and lead oiled-plate (5), air intake (51) are seted up on leading oiled-plate (5), lead the interior wall connection of oiled-plate (5) and casing (1), casing (1) below is provided with oil cup (7).

8. The range hood of claim 7, wherein: the bottoms of the first smoke guide plate (21) and the second smoke guide plate (22) are inclined backwards from top to bottom and bent to form a chamfer (23).

9. The range hood of claim 7, wherein: the bottom of the oil guide plate (5) is inclined backwards from top to bottom and bent to form a bending part (54).