CN111536563B

CN111536563B - Fume exhaust fan

Info

Publication number: CN111536563B
Application number: CN202010397841.6A
Authority: CN
Inventors: 王磊; 左春洋; 徐鑫; 申志贤
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2022-02-15
Anticipated expiration: 2040-05-12
Also published as: CN111536563A

Abstract

The invention discloses a range hood, which comprises a shell and a fan system arranged in the shell, wherein a first air inlet is formed on the front side of the shell, the range hood also comprises a smoke baffle plate which is arranged on the front side of the shell and can open or close the first air inlet, and the range hood is characterized in that: the bottom of the shell is provided with a second air inlet, when the smoke baffle plate opens the first air inlet, the second air inlet is in a closed state, and when the smoke baffle plate closes the first air inlet, the second air inlet is in an open state. Compared with the prior art, the invention has the advantages that: the front side and the bottom are respectively provided with the air inlets, different oil fume suction forms are used in different cooking environments, and the influence of the range hood on the cooking of a user is reduced as far as possible on the premise that the oil fume suction requirement is met.

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 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. An embedded smoke ventilator as that chinese patent application number 201420415153.8 discloses, including fan and box, its characterized in that: the box includes front bezel, back plate, upper plate, hypoplastron, left side board and right side board, is located to be equipped with the grid baffle between front bezel and the back plate in the box, forms the holding chamber between grid baffle in the box and the back plate, and the fan is installed in this holding intracavity, is equipped with the exhaust fume duct who communicates with the air outlet of fan on the box, and the front bezel can overturn and be connected with the box.

Above-mentioned range hood for make the air intake can cover great region, can overturn the design with whole front bezel, because the front bezel is great, can bring the influence for user's operation experience when its upset, consequently still need further improvement.

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, so that the range hood can ensure the oil smoke absorption effect and reduce the influence on the cooking of a user.

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 fan system of setting in the casing, the front side of casing is formed with first air intake, range hood is still including setting up at the casing front side, can open or close the cigarette board that keeps off of first air intake, its characterized in that: the bottom of the shell is provided with a second air inlet, when the smoke baffle plate opens the first air inlet, the second air inlet is in a closed state, and when the smoke baffle plate closes the first air inlet, the second air inlet is in an open state.

Preferably, for the maximize air inlet area, the casing is the cuboid, the front side of casing is uncovered and constitutes first air intake, the bottom of casing is uncovered and constitutes the second air intake, the air intake of fan system is forward.

Preferably, in order to facilitate opening and closing of the air inlet and to guide the flow of the oil smoke, a top end of the smoke barrier is rotatably connected to a top portion of a front side of the housing, and the rotation shaft extends in a left-right direction, so that the smoke barrier can open or close the first air inlet in a turning manner.

Further, for the action of automatic drive cigarette board, still including the actuating mechanism who is used for the drive to keep off the cigarette board upset, actuating mechanism is electric putter, electric putter's shell rotates with the casing inboard to be connected, electric putter's output then rotates with one side in keeping off the cigarette board orientation casing and is connected, the axis of rotation of electric putter and casing junction, electric putter and the axis of rotation of keeping off the cigarette board junction are the extension in the left right direction.

Furthermore, in order to facilitate opening and closing of the second air inlet and simultaneously play a role in filtering oil smoke, the oil smoke purifier further comprises a first filter screen and a second filter screen, wherein the first filter screen is fixedly arranged at the second air inlet at the bottom of the shell and comprises a first screen plate and first meshes arranged on the first screen plate; the second filter screen is arranged in the shell in a manner of moving back and forth, the second filter screen comprises a second screen plate and second meshes arranged on the second screen plate, and the first screen plate is tightly attached above the second screen plate; when the first meshes of the first filter screen and the second meshes of the second filter screen are aligned and at least partially overlapped, the second air inlet is opened, and when the first meshes of the first filter screen and the second meshes of the second filter screen are completely staggered, the second air inlet is closed.

Further, the second filter screen also comprises a movement mechanism for driving the second screen plate to move back and forth.

According to one aspect of the invention, the moving mechanism comprises a sheath and an ejector rod, the sheath is fixedly connected with the rear side of the second net plate and is of a hollow structure with a rear side opening, the ejector rod penetrates into the sheath from the rear side of the sheath, the rear end of the ejector rod is abutted against the rear side of the shell, so that the trend that the sheath is pushed forwards to close the second air inlet is kept, and when the smoke baffle is closed, the smoke baffle is abutted against the front side of the second net plate to keep the second air inlet in an open state.

Preferably, the movement mechanism further comprises a spring arranged on the front side of the ejector rod, one end of the spring is abutted against the front end of the ejector rod, and the other end of the spring is abutted against the inner side of the front end of the sheath, so that the trend of pushing the sheath forwards is maintained.

According to another aspect of the invention, the moving mechanism is a spring sheet fixed on the rear side of the second screen plate, the spring sheet is abutted with the rear side of the shell so as to keep the trend of pushing the second screen plate forwards to close the second air inlet, and the smoke baffle plate is abutted with the front side of the second screen plate when being closed so as to keep the second air inlet in an open state.

In order to ensure that the second mesh can be aligned or staggered with the first mesh by moving the second mesh, the first mesh and the second mesh are the same in size, the number and the distribution position relation of the first meshes are the same as those of the second mesh, the distance between two adjacent front and back first meshes is A, and when the smoke baffle is closed, the deformation length of the spring or the spring piece is A or integral multiple of A.

Compared with the prior art, the invention has the advantages that: the front side and the bottom are respectively provided with an air inlet, different oil fume suction forms are used in different cooking environments, and the influence of the range hood on the cooking of a user is reduced as much as possible on the premise of meeting the oil fume suction requirement; the filter screen at the bottom air inlet is linked to open and close the air inlet at the bottom by opening and closing the smoke baffle plate, so that the bottom air inlet is conveniently opened and closed, and only one air inlet is ensured to be opened at the same time.

Drawings

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

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the range hood of FIG. 1 with hidden smoke baffle, fan system and air outlet housing;

FIG. 4 is a schematic view of a housing and a first screen of the range hood of FIG. 1;

FIG. 5 is a schematic view of a second filter screen of the range hood of FIG. 1;

fig. 6 is a schematic view of a range hood according to a first embodiment of the present invention in a closed state;

FIG. 7 is a cross-sectional view of FIG. 6;

FIG. 8 is a schematic view of the range hood of FIG. 6 with the hidden smoke barrier, the fan system and the air outlet housing;

FIG. 9 is a schematic view of a second filter screen of the range hood of FIG. 6;

FIG. 10 is a schematic view of a ram assembly of the second screen of FIG. 5;

FIG. 11 is a schematic view of a ram assembly of the second screen of FIG. 9;

fig. 12 is a schematic view of a second embodiment of the range hood of the present invention hiding a smoke barrier, a fan system and an air outlet cover in a closed state;

fig. 13 is a schematic view of the range hood according to the second embodiment of the present invention with the smoke barrier, the fan system and the air outlet cover hidden in an open state;

fig. 14 is a schematic view of a second filter screen of the extractor hood of fig. 12.

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, 2, 6 and 7, a range hood includes a housing 1, a smoke barrier 2 disposed at the front side of the housing 1, a fan system 3 disposed in the housing 1, and an air outlet cover 4 disposed outside the housing 1 and connected to an air outlet of the fan system 3, wherein an air inlet of the fan system 3 faces forward.

Casing 1 is the cuboid, including two curb plates 11, back plate 12 and roof 13, and curb plate 11 sets up the left and right sides at back plate 12 respectively, and roof 13 sets up at the top of curb plate 11 and back plate 12, constitutes the casing 1 of the open hollow cuboid shape in front side, bottom from this. The front opening forms a first air inlet 14, and the bottom opening forms a second air inlet 15. The smoke barrier 2 is disposed at the first air inlet 14, the top of the smoke barrier 2 is rotatably connected to the top of the front side of the casing 1, and the rotation shaft of the smoke barrier 2 extends in the left-right direction, thereby being capable of being turned over with respect to the casing 1 to open or close the first air inlet 14.

The range hood further comprises a first filter screen 51 and a second filter screen 52, wherein the first filter screen 51 is arranged at the second air inlet 15 at the bottom of the housing 1 and is fixedly connected with the bottoms of the side plates 11 and the rear plate 12 of the housing 1 respectively. The first screen 51 includes a first screen 511 and first meshes 512 formed on the first screen 511, the first screen 511 is rectangular and adapted to the second air inlet 15, and the first meshes 512 are preferably arranged in an array.

The second filter screen 52 is arranged above the first filter screen 51 in a manner of moving back and forth, is positioned in the shell 1, comprises a second screen plate 521 and second mesh openings 522 arranged on the second screen plate 521, and is tightly attached to the first screen plate 511 and the second screen plate 521. The second panel 521 is also rectangular in shape and is sized and dimensioned to match the first panel 511. The second mesh openings 522 are also preferably arranged in an array.

When the smoke barrier 2 closes the first air inlet 14, the first mesh openings 512 of the first filter screen 51 and the second mesh openings 522 of the second filter screen 52 are aligned to at least partially overlap, so that the second air inlet 15 is opened. When the smoke barrier 2 opens the first intake vent 14, the first meshes 512 of the first filter screen 51 and the second meshes 522 of the second filter screen 52 are completely staggered, so that the second intake vent 15 is closed.

Referring to fig. 3 to 5 and 8 to 10, the second screen 52 further includes a moving mechanism 53, in this embodiment, the moving mechanism 53 is a ram assembly and is disposed at the left and right sides of the rear end of the second net plate 521. Each movement mechanism 53 comprises a sheath 531, a push rod 532 and a spring 533, wherein the sheath 531 is hollow and has a structure with a rear opening, and is fixedly connected with the second mesh plate 521, the push rod 532 penetrates into the sheath 531 from the rear side of the sheath 531, the spring 533 is arranged on the front side of the push rod 532, one end of the spring 533 is abutted against the front end of the push rod 532, the other end of the spring 533 is abutted against the inner side of the front end of the sheath 531, the rear end of the push rod 532 is abutted against the rear plate 12 of the housing 1, and the tendency of pushing the sheath 531 forwards is maintained under the action of the spring 533. Preferably, the rear end of the jack 532 is fixed to the rear plate 12 of the case 1 so as to limit the moving trace of the second mesh plate 521. Alternatively, a guide rail or the like may be provided on the side plate 11 to limit the movement locus of the second net plate 521.

When the smoke barrier 2 is closed, it abuts against the front side of the second net plate 521 of the second filter screen 52, pressing it backwards, and the spring 533 is compressed, at this time, the first meshes 512 of the first filter screen 51 and the second meshes 522 of the second filter screen 52 are aligned and at least partially overlapped, so that the second air inlet 15 is opened. When the smoke barrier 2 is opened, the first air inlet 14 is opened, the second net plate 521 is no longer pressed by the smoke barrier 2, and the second net plate 521 is pushed forward under the action of the restoring force of the spring 533, so that the first mesh 512 and the second mesh 522 are completely staggered, and the second air inlet 15 is closed.

Referring to fig. 7, in the present embodiment, the first mesh 512 is rectangular, the second mesh 522 is also rectangular, the sizes of the first mesh 512 and the second mesh 522 are the same, and the number and the distribution of the first mesh 512 are the same as those of the second mesh 522. The front width and the rear width of each mesh are B, the height H of the smoke baffle plate 2 and the opening angle alpha of the smoke baffle plate 2, and the parameters meet H sin alpha > B. And the distance between two adjacent front and back first meshes 512 or second meshes 522 is a, a is not less than B, preferably a equals B, and the deformation length of the spring 533 is an integral multiple of a or a.

The cigarette baffle 2 can adopt any prior art actuating mechanism to realize the relative casing 1 upset, in this embodiment, see fig. 11, the actuating mechanism who keeps off cigarette baffle 2 is electric putter 6, electric putter 6's shell is connected with 11 inboard rotations of the curb plate of casing 1, electric putter 6's output then rotates with the cigarette baffle 2 towards one side in the casing 1 and is connected, the axis of rotation of electric putter 6 and casing 1 junction, the axis of rotation of electric putter 6 and cigarette baffle 2 junction, all extend in the left and right directions. Alternatively, a motor + reduction gear may be used to drive the shaft. Alternatively, the opening and closing may be manually performed without providing a driving mechanism.

After the range hood is installed, the distance between the bottom of the range hood and the table top of the kitchen range is 300-500 mm.

Under the little oil smoke culinary art state such as cooking, keep off cigarette board 2 and need not to open, only second air intake 15 can satisfy the operation requirement. When the large oil smoke state, the smoke baffle 2 is opened, the second air inlet 15 is closed, the first air inlet 14 works, and the smoke baffle 2 brings larger coverage area, so that better oil smoke absorption effect can be ensured.

Example two

Referring to fig. 12 to 14, in the present embodiment, the movement mechanism 53 of the second screen 52 is a spring plate, and is fixed to the second screen plate 521 and directly abuts against the rear plate 12 of the housing 1. When the smoke barrier 2 is closed, the second net plate 521 is pressed so that the spring piece is compressed, and when the smoke barrier 2 is opened, the second net plate 521 is moved forward by the restoring force of the spring piece.

Claims

1. The utility model provides a range hood, includes casing (1) and fan system (3) of setting in casing (1), casing (1) is the cavity cuboid, the front side of casing (1) is formed with first air intake (14), range hood is still including setting up in casing (1) front side, can open or close cigarette board (2), its characterized in that of first air intake (14): a second air inlet (15) is formed at the bottom of the shell (1), when the first air inlet (14) is opened by the smoke baffle plate (2), the second air inlet (15) is in a closed state, and when the first air inlet (14) is closed by the smoke baffle plate (2), the second air inlet (15) is in an open state;

the range hood further comprises a first filter screen (51) and a second filter screen (52), the first filter screen (51) is fixedly arranged at a second air inlet (15) at the bottom of the shell (1), and the first filter screen (51) comprises a first screen plate (511) and first mesh holes (512) formed in the first screen plate (511); the second filter screen (52) is arranged in the shell (1) in a manner of moving back and forth, the second filter screen (52) comprises a second screen plate (521) and second screen holes (522) formed in the second screen plate (521), and the first screen plate (511) is attached to the upper side of the second screen plate (521); the second intake vent (15) is open when the first mesh openings (512) of the first screen (51) and the second mesh openings (522) of the second screen (52) are aligned to at least partially coincide, and the second intake vent (15) is closed when the first mesh openings (512) of the first screen (51) and the second mesh openings (522) of the second screen (52) are completely misaligned.

2. The range hood of claim 1, wherein: casing (1) is the cuboid, the front side of casing (1) is uncovered and constitutes first air intake (14), the bottom of casing (1) is uncovered and constitutes second air intake (15), the air intake of fan system (3) is forward.

3. The range hood of claim 2, wherein: the top end of the smoke baffle plate (2) is rotatably connected with the top of the front side of the shell (1), and the rotating shaft extends in the left-right direction, so that the smoke baffle plate (2) can turn over to open or close the first air inlet (14).

4. The range hood of claim 3, wherein: still including the actuating mechanism who is used for the drive to keep off cigarette board (2) upset, actuating mechanism is electric putter (6), the shell and the inboard rotation of casing (1) of electric putter (6) are connected, electric putter's (6) output then with keep off cigarette board (2) and rotate towards one side in casing (1) and be connected, the axis of rotation of electric putter (6) and casing (1) junction, electric putter (6) and the axis of rotation of keeping off cigarette board (2) junction are the extension in the left right direction.

5. The range hood according to any one of claims 1 to 4, wherein: the second filter screen (52) also comprises a moving mechanism (53) for driving the second screen plate (521) to move back and forth.

6. The range hood of claim 5, wherein: the moving mechanism (53) comprises a sheath (531) and a push rod (532), the sheath (531) is fixedly connected with the rear side of the second net plate (521) and is of a hollow structure with a rear side opening, the push rod (532) penetrates into the sheath (531) from the rear side of the sheath (531), the rear end of the push rod (532) is propped against the rear side of the shell (1), so that the trend that the sheath (531) is pushed forwards to close the second air inlet (15) is kept, and the smoke baffle plate (2) is abutted against the front side of the second net plate (521) when closed and keeps the second air inlet (15) in an open state.

7. The range hood of claim 6, wherein: the movement mechanism (53) further comprises a spring (533) arranged on the front side of the ejector rod (532), one end of the spring (533) is abutted with the front end of the ejector rod (532), and the other end of the spring is abutted with the inner side of the front end of the sheath (531), so that the tendency of pushing the sheath (531) forwards is maintained.

8. The range hood of claim 5, wherein: the moving mechanism (53) is a spring piece fixed on the rear side of the second net plate (521), the spring piece is abutted against the rear side of the shell (1), so that the trend that the second net plate (521) is pushed forwards to close the second air inlet (15) is kept, and the smoke baffle plate (2) is abutted against the front side of the second net plate (521) when being closed, so that the open state of the second air inlet (15) is kept.

9. The range hood of claim 7 or 8, wherein: the sizes of the first meshes (512) and the second meshes (522) are the same, the number and the distribution position relation of the first meshes (512) are the same as those of the second meshes (522), the distance between two adjacent front and back first meshes (512) is A, and when the smoke baffle plate (2) is closed, the deformation length of the spring (533) or the spring piece is an integral multiple of A or A.