CN111457432B

CN111457432B - Fume exhaust fan

Info

Publication number: CN111457432B
Application number: CN201910059530.6A
Authority: CN
Inventors: 王磊
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2022-06-21
Anticipated expiration: 2039-01-22
Also published as: CN111457432A

Abstract

The invention discloses a range hood, which comprises a smoke collecting hood, wherein a smoke collecting cavity which is upwards sunken is formed in the smoke collecting hood, a main air inlet is formed in the rear side of the top of the smoke collecting hood, the range hood also comprises a smoke baffle plate and an air inlet body, the rear end of the smoke baffle plate is rotatably connected with the top of the smoke collecting hood and integrally positioned in the front side of the main air inlet, the rear end of the air inlet body is rotatably connected with the rear part of the smoke collecting hood, and the smoke baffle plate is supported above the air inlet body; the air inlet body is provided with a first air inlet, a second air inlet, a first air outlet and a second air outlet; the air inlet body is provided with a first position positioned in the smoke collection cavity and a second position rotated to the outside of the smoke collection cavity, when the air inlet body is positioned at the first position, the first air inlet is positioned in the smoke collection cavity, the second air inlet faces the smoke source, and the second air outlet is positioned below the total air inlet and is opposite to the total air inlet; when the air inlet body is located at the second position, the first air inlet faces the smoke source, the first air outlet is located below the total air inlet and opposite to the total air inlet, and the second air outlet is closed by the smoke baffle plate.

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 top-suction type range hood uses the principle of hot gas rising to suck and discharge 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, but because the power source is far away from a cooking bench, the suction effect of the power source is reduced, and the oil smoke cannot be completely sucked; the side-draft range hood utilizes the vortex wind pressure principle to absorb most of the oil smoke close to the cooking bench in an arc form, so that the adverse effect on the health of a human body can be reduced, and the power source is close to the cooking bench, so that the suction effect of the power source cannot be reduced basically.

Therefore, some range hoods combining top suction and side suction are also available, and the advantages of top suction and side suction are fully utilized to obtain a better suction effect. The extractor hood disclosed in the chinese patent with application number 201810285529.0 comprises an upper casing and a lower casing which are installed together in a matching manner, wherein a smoke exhaust channel is arranged in the upper casing and the lower casing, a smoke outlet communicated with the smoke exhaust channel is arranged on the upper casing, a smoke inlet communicated with the smoke exhaust channel is arranged on the lower casing, an air suction motor and an impeller are arranged in the upper casing, a rotating shaft is arranged in the lower casing, and a top casing and a side casing which can rotate around the rotating shaft under the action of a driving device are arranged on the lower casing.

The range hood has the humanized design concept of a side-suction range hood and a high-efficiency negative pressure suction function, and also has a powerful smoke collecting effect of a top-suction range hood. However, in practical use, the range hood simply overlaps the top suction type and the side suction type, and only has one working mode, namely the top suction type and the side suction type, so that the range hood has no advantages of the top suction type range hood in a working state, and cannot avoid the influence of the side shell on special cooking conditions (such as a relatively high food steamer and the like).

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a range hood, which can realize the conversion between two smoking modes, ensure a better oil smoke absorption effect, and avoid the influence on cooking operation.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes the collection petticoat pipe, be formed with the collection smoke chamber to the undercut in the collection petticoat pipe, the rear side at collection petticoat pipe top is opened and is equipped with total air intake, its characterized in that: the range hood also comprises a smoke baffle plate and an air inlet body, wherein the rear end of the smoke baffle plate is rotatably connected with the top of the smoke collecting hood and is integrally positioned on the front side of the main air inlet; the air inlet body is provided with a first air inlet, a second air inlet, a first air outlet and a second air outlet; the air inlet body is provided with a first position located in the smoke collection cavity and a second position rotated to the outside of the smoke collection cavity, when the air inlet body is located at the first position, the first air inlet is located in the smoke collection cavity, the second air inlet faces a smoke source, the first air outlet is located at the rear side, and the second air outlet is located below the main air inlet and opposite to the main air inlet, so that the range hood is in a top suction mode; when the air inlet body is located at the second position, the first air inlet faces the smoke source, the second air inlet is located at the rear side, the first air outlet is located below the main air inlet and opposite to the main air inlet, and the second air outlet is sealed by the smoke baffle plate, so that the range hood is in a side-suction mode.

Preferably, the air inlet body is structurally characterized in that the air inlet body comprises a front side wall, a rear side wall, a top wall, a bottom wall, a left side wall and a right side wall, the left side wall is connected among the left end parts of the front side wall, the rear side wall, the top wall and the bottom wall, and the right side wall is connected among the right end parts of the front side wall, the rear side wall, the top wall and the bottom wall, so that a hollow air inlet body is formed; the first air inlet is formed in the front side wall, the second air inlet is formed in the bottom wall, the first air outlet is formed in the rear side wall, the second air outlet is formed in the position, close to the rear side wall, of the top wall, and the first air outlet and the second air outlet are matched with the main air inlet.

In order to ensure that air can smoothly enter the range hood when the range hood is in a side-draught mode, the front side wall is gradually inclined backwards from bottom to top.

In order to guide the action of the smoke baffle, guide rails are respectively arranged on the left side and the right side of the top wall, the guide rails extend from the positions close to the front side wall to the positions close to the rear side wall, guide shafts are respectively arranged on the upper portion of the front end and the left side and the right side of the smoke baffle, and the guide shafts can be in sliding fit with the corresponding guide rails.

In order to avoid oil accumulation between the air inlet body and the smoke collecting cover, when the air inlet body is positioned at the first position, the bottom wall seals the bottom of the smoke collecting cavity.

Preferably, keep off the rotation connected mode of cigarette board and collection petticoat pipe does, the rear end that keeps off the cigarette board, be provided with the pivot respectively in the position of the left and right sides, the pivot extends to in the collection petticoat pipe and with collection petticoat pipe rotation connection.

Preferably, the air inlet body is connected with the smoke collecting cover in a rotating mode, connecting seats are respectively arranged at the rear end parts of the left side and the right side of the air inlet body, and the connecting seats are connected with the rear part of the smoke collecting cover in a rotating mode.

Compared with the prior art, the invention has the advantages that: through setting up rotatable air inlet body, the position of control air inlet body realizes the conversion of the mode of inhaling on the top of range hood and side-draught mode to can utilize the advantage of two kinds of modes of top-draught and side-draught, can ensure better oil absorption cigarette effect, can avoid again causing the influence to the culinary art operation.

Drawings

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

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

fig. 3 is a schematic view of a main body of a range hood according to an embodiment of the present invention;

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

FIG. 5 is a schematic front view of a movable air intake body of the range hood according to the embodiment of the present invention;

FIG. 6 is a schematic rear view of the movable air intake member of the range hood according to the embodiment of the present invention;

fig. 7 is a schematic diagram of a state transition process of the range hood according to the embodiment of the invention;

FIG. 8 is a cross-sectional view of the extractor hood of FIG. 7;

fig. 9 is a schematic view of a range hood according to an embodiment of the present invention in a second state;

fig. 10 is a sectional view of the range hood of fig. 9.

Detailed Description

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

Referring to fig. 1 to 6, a range hood includes a main body 1, a smoke baffle 2 and an air intake body 3. The main body 1 comprises a fume collecting hood 11 and a box body 12, a centrifugal fan can be arranged in the box body 12, and the structure of the main body 1 can be the same as that of the existing top suction type range hood. An upwards sunken smoke collecting cavity 111 is formed in the smoke collecting cover 11, a total air inlet 112 is formed in the rear side of the top of the smoke collecting cover 11, the smoke blocking plate 2 and the air inlet body 3 are arranged in the smoke collecting cavity 111 and are respectively connected with the smoke collecting cover 11 in a rotating mode, and the smoke blocking plate 2 is integrally located on the front side of the total air inlet 112. For convenience of description, the terms "front", "rear", "left", "right", "upper", "lower", "top" and "bottom" in this specification refer to the orientation of the extractor hood relative to the user when in use.

The smoke barrier 2 has a first end 21 (rear end) and a second end 22 (front end) opposite to each other, wherein the first end 21 is close to the inlet 112 and the second end 22 is far from the inlet 112 (the state shown in fig. 2, the second end 22 is located at the front side of the first end 21). The first end 21 of the smoke baffle plate 2 is provided with a rotating shaft 23 at the left side and the right side respectively, the rotating shaft 23 extends in the transverse direction and extends out of the side surface of the smoke baffle plate 2, the rotating shaft 23 extends into the smoke collecting hood 11 and is rotatably connected with the smoke collecting hood 11, and therefore the smoke baffle plate 2 can be rotatably connected with the smoke collecting hood 11 through the rotating shaft 23; the second end 22 of the smoke barrier 2 is provided with a guide shaft 24 at a position close to the left and right sides, the guide shaft 24 extends in the transverse direction and does not exceed the side surface of the smoke barrier 2, and the guide shaft 24 is used for matching with the air inlet body 3, which will be described in detail below.

The air intake body 3 comprises a front side wall 31, a rear side wall 32, a top wall 33, a bottom wall 34, a left side wall 35 and a right side wall 36, wherein the left side wall 35 is connected among the left end parts of the front side wall 31, the rear side wall 32, the top wall 33 and the bottom wall 34, and the right side wall 36 is connected among the right end parts of the front side wall 31, the rear side wall 32, the top wall 33 and the bottom wall 34, so that a hollow air intake body is formed.

The front wall 31 is opened with a plurality of holes to form a first air inlet 311, and the bottom wall 34 is opened with a plurality of holes to form a second air inlet 341 (the area is larger than the first air inlet 311). The rear side wall 32 is provided with a first air outlet 321, the top wall 33 is provided with a second air outlet 331 at a position close to the rear side wall 32, and the positions, shapes and sizes of the first air outlet 321 and the second air outlet 331 are respectively matched with the total air inlet 112 on the smoke collecting hood 11. Since the smoke barrier 2 is located in front of the general air inlet 112, the position where the smoke barrier 2 is rotatably connected to the smoke collecting hood 11 is located in front of the second air outlet 321. Preferably, the bottom wall 34 closes the bottom of the smoke collecting chamber 111, i.e. the periphery of the bottom wall 34 abuts against the inner side of the bottom of the smoke collecting hood 11, so as to avoid oil accumulation caused by gaps between the bottom wall 34 and the smoke collecting hood 11. The smoke barrier 2 is shaped and dimensioned to close the second air outlet 331. Preferably, the front side wall 31 is gradually inclined backward from the bottom to the top.

The top wall 33 is provided with guide rails 332 on the left and right sides, respectively, and the guide rails 332 extend from near the front side wall 31 to near the rear side wall 32. The surface of each guide rail 332 facing the other guide rail 332 is recessed away from the other guide rail 332 to form a guide groove 3321, and the guide shaft 24 of the smoke barrier 2 can be inserted into the guide groove 3321 and slid relative thereto, so that the smoke barrier 2 and the air intake body 3 are slidably fitted.

The rear end parts of the left and right sides of the air inlet body 3 are respectively provided with a connecting seat 37 for being rotatably connected with the rear part of the smoke collecting cover 11. A motor (not shown) may be provided at a junction of the air intake body 3 and the smoke collecting cover 11 to electrically drive the air intake body 3 to rotate around the junction with the smoke collecting cover 11.

When the range hood is turned off or the oil smoke is small, as shown in fig. 1 and fig. 2, at this time, the air inlet body 3 and the smoke baffle 2 are in the first position, that is, the air inlet body 3 is in a horizontal or nearly horizontal state, and is integrally disposed in the smoke collection cavity 111, the smoke baffle 2 is supported by the top wall 33 of the air inlet body 3 to be in a horizontal or nearly horizontal state, and the range hood is in a top-suction mode. In this mode, the second end 22 of the smoke barrier 2 is located at the front side of the guide rail 332 of the air intake body 3, the first end 21 is located at the front side of the second air outlet 331 of the air intake body 3, so as to avoid the second air outlet 331 (located at the front side of the second air outlet 331 as a whole), and the second air outlet 331 is located below and opposite to the main air inlet 112; the second air inlet 321 on the rear side wall 32 of the air inlet body 3 is closed due to being attached to the wall (when the range hood is installed, the rear side is attached to the wall), and the second air inlet 341 faces the smoke source. The oil smoke enters the air inlet body 3 from the second air inlet 341 at the bottom, and is discharged from the second air outlet 331 to enter the interior of the box body 2 through the total air inlet 112 on the smoke collecting cover 11.

When the cooking oil smoke is large, as shown in fig. 7 and 8, the air inlet body 3 rotates downwards around the rotary connection part with the smoke collecting cover 11, at this time, the smoke baffle plate 2 is acted by gravity, the second end 22 of the smoke baffle plate naturally falls down to be always in contact with the top wall 33 of the air inlet body 3, and after the air inlet body 3 rotates for a certain angle, the guide shaft 23 on the second end 22 is inserted into the guide rail 332 to be in sliding fit; thereafter, the air intake body 3 continues to rotate, the second end 22 of the smoke barrier 2 slides upward relative to the air intake body 3, and the second air outlet 331 of the air intake body 3 gradually opposes the smoke barrier 2 along with the rotation of the air intake body 3 until the air intake body 3 rotates to the vertical state, see fig. 9 and 10. At this time, the range hood is in a side-draught mode, the air inlet body 3 and the smoke baffle 2 are in a second position, namely the air inlet body 3 and the smoke baffle 2 are vertical, the smoke baffle 2 seals the second air outlet 331, the second air inlet 321 is tightly attached to the wall and sealed, the first air outlet 321 is opposite to the lower part of the main air inlet 112, and the first air inlet 311 faces the smoke source; the oil smoke enters the air intake body 3 from the first air inlet 311, and is discharged from the first air outlet 321 into the interior of the cabinet 2 through the total air inlet 112 of the smoke collecting hood 11. Due to the inclined arrangement of the front side wall 31, the first air inlet 311 can supply air more smoothly.

The state conversion of the range hood can control the operation of the air inlet body 3 by a user according to the cooking condition, or the range hood can be provided with an oil smoke sensor, and the operation of the air inlet body 3 is controlled by the detection result of the oil smoke sensor.

Claims

1. The utility model provides a range hood, includes collection petticoat pipe (11), be formed with inside to the collection smoke chamber (111) of upwards sunken collection in collection petticoat pipe (11), the rear side at collection petticoat pipe (11) top is opened and is equipped with total air intake (112), its characterized in that: the range hood further comprises a smoke baffle plate (2) and an air inlet body (3), the rear end of the smoke baffle plate (2) is rotatably connected with the top of the smoke collecting hood (11) and is integrally positioned on the front side of the total air inlet (112), the rear end of the air inlet body (3) is rotatably connected with the rear part of the smoke collecting hood (11), and the smoke baffle plate (2) is supported above the air inlet body (3); the air inlet body (3) is provided with a first air inlet (311), a second air inlet (341), a first air outlet (321) and a second air outlet (331);

the air inlet body (3) comprises a front side wall (31), a rear side wall (32), a top wall (33), a bottom wall (34), a left side wall (35) and a right side wall (36), the left side wall (35) is connected among the left end parts of the front side wall (31), the rear side wall (32), the top wall (33) and the bottom wall (34), and the right side wall (36) is connected among the right end parts of the front side wall (31), the rear side wall (32), the top wall (33) and the bottom wall (34), so that a hollow air inlet body is formed; the first air inlet (311) is formed in the front side wall (31), the second air inlet (341) is formed in the bottom wall (34), the first air outlet (321) is formed in the rear side wall (32), the second air outlet (331) is formed in the position, close to the rear side wall (32), of the top wall (33), and the first air outlet (321) and the second air outlet (331) are matched with the total air inlet (112);

the air inlet body (3) is provided with a first position located in the smoke collection cavity (111) and a second position rotating to the outside of the smoke collection cavity (111), when the air inlet body (3) is located at the first position, the first air inlet (311) is located in the smoke collection cavity (111), the second air inlet (341) faces a smoke source, the first air outlet (321) is located at the rear side, and the second air outlet (331) is located below the main air inlet (112) and is opposite to the main air inlet, so that the range hood is in a top suction mode; when the air inlet body (3) is located at the second position, the first air inlet (311) faces a smoke source, the second air inlet (341) is located at the rear side, the first air outlet (321) is located below the total air inlet (112) and opposite to the total air inlet, and the second air outlet (331) is sealed by the smoke baffle (2), so that the range hood is in a side suction mode.

2. The range hood of claim 1, wherein: the front side wall (31) is gradually inclined backwards from bottom to top.

3. The range hood of claim 1, wherein: guide rails (332) are respectively arranged on the left side and the right side of the top wall (33), the guide rails (332) extend from the position close to the front side wall (31) to the position close to the rear side wall (32), guide shafts (24) are respectively arranged on the upper portion and the left side and the right side of the front end of the smoke baffle plate (2), and the guide shafts (24) can be in sliding fit with the corresponding guide rails (332).

4. The range hood of claim 1, wherein: when the air inlet body (3) is located at the first position, the bottom wall (34) seals the bottom of the smoke collection cavity (111).

5. The range hood according to any one of claims 1 to 4, wherein: keep off the rear end of cigarette board (2), be provided with pivot (23) respectively in the position of the left and right sides, pivot (23) extend to in collection petticoat pipe (11) and with collection petticoat pipe (11) rotation connection.

6. The range hood according to any one of claims 1 to 4, wherein: the rear end parts of the left side and the right side of the air inlet body (3) are respectively provided with a connecting seat (37), and the connecting seats (37) are rotatably connected with the rear part of the fume collecting hood (11).