CN212252749U

CN212252749U - Fume exhaust fan

Info

Publication number: CN212252749U
Application number: CN202020236922.3U
Authority: CN
Inventors: 李永波; 邢行; 姚家前; 李智怀; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-12-29
Anticipated expiration: 2030-03-02

Abstract

The utility model discloses a range hood, including collection petticoat pipe, box and first fan, still include at least one second fan and air pipe the both sides of collection petticoat pipe form the side wind channel the positive inner wall epirelief of collection petticoat pipe is equipped with central wind channel inboard the regional lateral wall that induced drafts forms into the whirl region that is used for making the rotatory air current that flows through it be provided with the first exhaust hole of giving vent to anger forward on the side wind channel and/or be provided with the orientation on the central wind channel the regional second exhaust hole of whirl, the air outlet of second fan passes through air pipe with first exhaust hole with second exhaust hole intercommunication, the whirl region is interior concavity, the whirl region includes the whirl face more than two or two. Has high effect of gathering the cigarette.

Description

Fume exhaust fan

Technical Field

The utility model relates to a kitchen utensil field, concretely relates to range hood.

Background

The range hood is a main means for collecting oil smoke in a kitchen, and how to improve the suction efficiency of the range hood is always important for the design and research of the range hood. When the traditional range hood inhales, the air suction range is a hemispherical area, and air in all directions is sucked indiscriminately. The air flow rate at the position of the air suction port is larger in the air suction mode, and the air flow rate far away from the air suction port is rapidly reduced along with the increase of the distance from the air suction port. Therefore, in a short distance below the air suction port, the upward speed of the air becomes very small, so that the upward suction force is insufficient, and the range hood is easily interfered by external factors, such as walking of people, the influence of factors which can disturb the air flow, such as the operation of a fan or cold air, and the like, so that the oil smoke or pollutants are dissipated along with the flowing of disturbed air flow, and the range hood has poor smoke collecting and smoking effects.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the problems that exist among the prior art to a certain extent, for this reason, the utility model aims to provide a range hood has the height and holds together the cigarette effect.

The above purpose is realized by the following technical scheme:

the utility model provides a range hood, includes collection petticoat pipe, box and first fan, the box sets up on the collection petticoat pipe, first fan sets up in the box the front indent of collection petticoat pipe forms the region of induced drafting the regional top of induced drafting is provided with the inlet scoop, the inlet scoop with the air intake intercommunication of first fan, its characterized in that: still include at least one second fan and air pipe the both sides of collection petticoat pipe form the side wind channel the positive inner wall epirelief of collection petticoat pipe is equipped with central wind channel the side wind channel is inboard the regional lateral wall that induced drafts forms into the whirl region that is used for making the rotatory air current that flows through it be provided with the first exhaust hole of giving vent to anger forward on the side wind channel and/or be provided with the orientation on the central wind channel the regional second exhaust hole of whirl, the air outlet of second fan passes through air pipe with first exhaust hole with second exhaust hole intercommunication, the whirl region is interior concavity, the whirl region includes the whirl face more than two or two.

As a further improvement of the utility model, the whirl is regional including two whirl faces, is first whirl face and second whirl face respectively, the one end of first whirl face with the one end of second whirl face is connected, the other end of first whirl face with the inner wall of collection petticoat pipe is connected, the other end of second whirl face with the side wind channel is connected.

As a further improvement of the present invention, the first swirling surface and the second swirling surface are planes, the first swirling surface and the second swirling surface are perpendicularly arranged or are inwardly inclined from top to bottom.

As a further improvement of the present invention, the included angle between the first swirling flow surface and the second swirling flow surface is greater than or equal to 90 degrees and less than 180 degrees.

As a further improvement of the utility model, the side wind channel is in collection petticoat pipe both sides, from top to bottom slope arrange forward be provided with the first exhaust hole of one row at least vertical layout and giving vent to anger forward on the side wind channel, first exhaust hole with the distance at side wind channel edge is less than 20 mm.

As a further improvement, the central air duct is extended from the bottom of the exhaust fume collecting hood through the air suction inlet and is vertically arranged on the inner wall of the front surface of the exhaust fume collecting hood, at least one row of vertical arrangement and orientation are arranged on the two opposite side walls of the central air duct, and the second exhaust hole for air outlet of the rotational flow region is formed.

As a further improvement of the present invention, the first exhaust hole and the second exhaust hole are a long hole, a polygonal hole, a star-shaped hole, or a special-shaped hole.

As a further improvement, the second fan is disposed on the fume collecting hood, an air inlet end of the second fan is communicated with the air inlet port, and an air inlet cover is disposed above the air inlet end of the second fan and covers the air inlet port.

As a further improvement of the utility model, be equipped with between the inlet end of lid and second fan admits air and filter the piece, it is used for getting into to filter the impurity in the second fan air.

As a further improvement of the utility model, the ventilation pipeline is formed by connecting a plurality of sections of hard pipes or is formed by a hose and an adapter.

Compared with the prior art, the utility model discloses an at least including following beneficial effect:

the utility model provides a pair of range hood during operation, first fan and second fan start, and first fan drives external gas and inhales from the inlet scoop, discharges from the pipe of discharging fume in the box subassembly. The second fan sucks external air, and the air duct is sprayed out from the first exhaust holes of the side air duct and the second exhaust holes of the central air duct, and the air flow sprayed out from the first exhaust holes and the second exhaust holes can drive peripheral air flow to flow together due to the air viscosity effect.

Drawings

Fig. 1 is a schematic structural view of a range hood of the present invention;

fig. 2 is another schematic structural diagram of a range hood according to the present invention;

fig. 3 is an exploded schematic view of a range hood of the present invention.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. To the embodiment of the present invention, modify or replace some technical features, without departing from the spirit of the present invention, it should be covered in the technical solution scope of the present invention.

Referring to the attached drawings 1-3, the utility model discloses a range hood, including collection petticoat pipe 1, box 2 and first fan 3, box 2 sets up on the collection petticoat pipe 1, first fan 3 sets up in the box 2 the front indent of collection petticoat pipe 1 forms the region of induced drafting the regional top of induced drafting is provided with inlet scoop 11, inlet scoop 11 with the air intake intercommunication of first fan 3, its characterized in that: still include at least one second fan 12 and air pipe 13 the both sides of collection petticoat pipe 1 form side wind channel 14 the positive inner wall epirelief of collection petticoat pipe 1 is equipped with central wind channel 15 side wind channel 14 is inboard the regional lateral wall that induced drafts forms to be used for making the rotatory whirl region 16 of its air current of flowing through be provided with the first exhaust hole of giving vent to anger forward on the side wind channel and/or be provided with the orientation on the central wind channel the regional second exhaust hole of whirl, the air outlet of second fan 12 passes through air pipe 13 with first exhaust hole andor second exhaust hole intercommunication, the regional 16 of whirl is interior concavity, the regional 16 whirl includes the whirl face more than two or two. When the range hood operates, the first fan 3 and the second fan 12 are started simultaneously, the first fan 3 drives external gas to be sucked from the air suction port 11 and discharged from the smoke discharge pipe in the box body 2. The second fan 12 sucks in the external air, and the external air is ejected from the first exhaust holes 141 of the side air ducts 14 and the second exhaust holes 151 of the central air duct 15 through the ventilation duct 13, the air ejected from the second exhaust holes 151 of the central air duct 15 is ejected to the swirling area 16, and the air is smoothly turned to form swirling flow. The gas blown out from the first exhaust hole 141 of the side air duct 14 can drive the peripheral gas to flow due to the viscous effect of the gas, and accelerate the swirling flow gas ejected from the second exhaust hole 151. And the spiral upward air flow can be formed by matching with the upward suction force of the air suction opening 11. The rotary absorption gathering effect can be formed before the oil smoke gas is diffused, so that the oil smoke is prevented from diffusing and escaping, and the effect of high-efficiency gathering and smoking is achieved.

The swirling area 16 includes two swirling surfaces, namely a first swirling surface 161 and a second swirling surface 162, one end of the first swirling surface 161 is connected with one end of the second swirling surface 162, the other end of the first swirling surface 161 is connected with the inner wall of the smoke collecting hood 1, and the other end of the second swirling surface 162 is connected with the side air duct 14. An included angle between the first swirling surface 161 and the second swirling surface 162 is greater than or equal to 90 degrees and less than 180 degrees. In this embodiment, an included angle between the first swirling surface 161 and the second swirling surface 162 is 135 degrees. The swirling area 16 may also include more than two swirling surfaces, for example, three swirling surfaces, that is, a first swirling surface 161, a second swirling surface 162 and a third swirling surface, respectively, the third swirling surface is disposed between the first swirling surface 161 and the second swirling surface 162, that is, one end of the third swirling surface is connected to the first swirling surface 161, the other end of the third swirling surface is connected to one end of the second swirling surface 162, the other end of the first swirling surface 161 is connected to the inner wall of the smoke collection cover 1, and the other end of the second swirling surface 162 is connected to the side duct 14; or four rotational flow surfaces, namely a first rotational flow surface 161, a second rotational flow surface 162, a third rotational flow surface and a fourth rotational flow surface, are included, the third rotational flow surface and the fourth rotational flow surface are arranged between the first rotational flow surface 161 and the second rotational flow surface 162, one end of the third rotational flow surface is connected with one end of the first rotational flow surface 161, the other end of the third rotational flow surface is connected with one end of the fourth rotational flow surface, the other end of the fourth rotational flow surface is connected with one end of the second rotational flow surface 162, the other end of the first rotational flow surface 161 is connected with the inner wall of the smoke collecting hood 1, and the other end of the second rotational flow surface 162 is connected with the side air duct 14; and so on.

The first cyclone surface 161 and the second cyclone surface 162 are planes, and the first cyclone surface 161 and the second cyclone surface 162 are vertically arranged or are obliquely arranged from top to bottom inwards. The first rotational flow surface 161 and the second rotational flow surface 162 may also be arc surfaces, and any horizontal section of the arc surface formed by the first rotational flow surface 161 and the second rotational flow surface 162 is a quarter arc, and the cross section of the arc surface in the horizontal direction is linearly enlarged from bottom to top.

The side wind channel 14 is in collect petticoat pipe 1 both sides, from top to bottom slope arrangement forward side wind channel 14 is last to be provided with at least one row of vertical arrangement and the first exhaust hole 141 of giving vent to anger forward, first exhaust hole 141 with the distance of side wind channel 14 edge is less than 20 mm. In this embodiment, a row of first exhaust holes 141 which are vertically arranged and are used for exhausting air forward are arranged on the side air duct 14, and the distance between the first exhaust holes 141 and the edge of the side air duct 14 is 18 mm. The side air duct 14 may be provided with two or three or more rows of first exhaust holes 141 arranged vertically and exhausting air toward the front according to the requirement of the practical application environment.

The central air duct 15 is extended from the bottom of the exhaust fume collecting hood 1 below the exhaust inlet 11, and is vertically arranged on the inner wall of the front surface of the exhaust fume collecting hood 1, at least one row of vertical arrangement and orientation are arranged on the two opposite side walls of the central air duct 15, and the second exhaust holes 151 for exhausting air from the rotational flow area 16 are formed in the central air duct 15. In this embodiment, a row of second exhaust holes 151 which are vertically arranged and exhaust air toward the swirling flow region 16 is disposed on two opposite sides of the central air duct 15. The central air duct 15 may be provided with two or three or more rows of second air outlet holes 151 arranged vertically and exhausting air towards the front according to the requirement of the practical application environment.

The first exhaust hole 141 and the second exhaust hole 151 are long holes, polygonal holes, star-shaped holes, or irregular holes. The first and

second exhaust holes

141 and 151 may have any shape.

The second fan 12 is arranged on the fume collecting hood 1, an air inlet 17 is arranged on the fume collecting hood 1, and the air inlet end of the second fan 12 is communicated with the air inlet 17, in the embodiment, the number of the second fans 12 is two, the two second fans are respectively arranged on the left side and the right side of the fume collecting hood 1, an air inlet cover 121 is arranged above the air inlet end of the second fan 12, and the air inlet cover 121 covers the air inlet 17. A filter member 122 is disposed between the air inlet cover 121 and the air inlet end of the second fan 12, and the filter member 122 is used for filtering impurities in the air entering the second fan 12. The air enters the air inlet end of the second fan 12 through the air inlet cover 121 and the filter piece 122, the filter piece 122 filters impurities in the air entering the second fan 12, and the second fan 12 and the ventilation duct 13 are prevented from being polluted by external impurities to cause blockage after long-time use. The ventilation pipeline 13 is formed by connecting multiple sections of hard pipes or a hose and an adapter.

In the present embodiment, the second fan 12 is provided on the smoke collecting hood 1, but the arrangement of the second fan 12 is not limited to this case. If the second fan 12 can also be arranged in the box body 2, the first fan 3 and the second fan 12 are both arranged in the box body 2, a motor is further arranged in the box body 2, the motor is provided with a first output shaft and a second output shaft, the first output shaft is connected with the first fan 3, the second output shaft is connected with the second fan 12, the first fan 3 comprises a main volute and a main wind wheel arranged in the main volute, the second fan 12 comprises an auxiliary volute and an auxiliary wind wheel arranged in the auxiliary volute, the main volute and the auxiliary volute are of an integrated structure, a box body front cavity is formed between the front surface of the first fan 3 and the front plate of the box body 2, the lower end of the box body front cavity is communicated with the suction opening 11 of the smoke collecting hood 1, the box body front cavity is communicated with the air inlet of the first fan 3, the air outlet of the first fan 3 is communicated with an air outlet seat arranged on the box body 2, a box back cavity is formed between the back face of the second fan 12 and the back plate of the box body 2, the upper end of the box back cavity is communicated with an air inlet formed in the top of the box body 2, and the box back cavity is communicated with the air inlet of the second fan 12. The top of the smoke collecting hood 1 is provided with an opening, the opening is communicated with an air outlet of the second fan 12, an air inlet of the ventilation pipeline 13 is communicated with the opening, an air outlet of the ventilation pipeline 13 is communicated with a first exhaust hole 141 on the side air duct 14 and a second exhaust hole 151 on the central air duct 15. The first fan 3 is used for the range hood to normally suck oil smoke, the oil smoke enters the front cavity of the box body through the exhaust inlet 11 of the smoke collecting cover 1, enters the air inlet of the first fan 3 and is discharged outwards from the air outlet seat on the box body 2 through the air outlet of the first fan 3. The second fan 12 sucks clean air from the top of the range hood, the air enters the back cavity of the box body from the air inlet at the top of the box body 2, is discharged from the air outlet of the second fan 12 through the air inlet of the second fan 12 to enter the ventilation pipeline 13, and is finally discharged from the first exhaust hole 141 on the side air duct 14 and the second exhaust hole 151 on the central air duct 15. The second fan 12 may not be provided, the ventilation duct 13 is provided in the box 2 and the smoke collecting hood 1, the box 2 is provided with an opening, one end of the ventilation duct 13 is connected with the opening provided on the box, and the other end of the ventilation duct is connected with the first exhaust hole 141 on the smoke collecting side air duct 14 and the second exhaust hole 151 on the central air duct 15.

The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.

Claims

1. The utility model provides a range hood, includes collection petticoat pipe (1), box (2) and first fan (3), box (2) set up collection petticoat pipe (1) is last, first fan (3) set up in box (2) the front indent of collection petticoat pipe (1) forms the area of induced drafting the regional top of induced drafting is provided with inlet scoop (11), inlet scoop (11) with the air intake intercommunication of first fan (3), its characterized in that: still include at least one second fan (12) and air pipe (13) the both sides of collection petticoat pipe (1) form side wind channel (14) the positive inner wall epirelief of collection petticoat pipe (1) is equipped with central wind channel (15) side wind channel (14) are inboard induced draft regional lateral wall and form into the rotatory whirl region (16) that is used for making the air current that flows through it be provided with the first exhaust hole of giving vent to anger forward on the side wind channel and/or be provided with the orientation on the central wind channel the regional second exhaust hole of whirl, the air outlet of second fan (12) passes through air pipe (13) with first exhaust hole andor second exhaust hole intercommunication, whirl region (16) are interior concavity, whirl region (16) include the whirl face more than two or two.

2. The range hood of claim 1, wherein: the cyclone area (16) comprises two cyclone surfaces, namely a first cyclone surface (161) and a second cyclone surface (162), one end of the first cyclone surface (161) is connected with one end of the second cyclone surface (162), the other end of the first cyclone surface (161) is connected with the inner wall of the smoke collecting hood (1), and the other end of the second cyclone surface (162) is connected with the side air duct (14).

3. A range hood according to claim 2, wherein: the first cyclone surface (161) and the second cyclone surface (162) are planes, and the first cyclone surface (161) and the second cyclone surface (162) are vertically arranged or obliquely arranged from top to bottom inwards.

4. A range hood according to claim 3, wherein: an included angle between the first rotational flow surface (161) and the second rotational flow surface (162) is greater than or equal to 90 degrees and smaller than 180 degrees.

5. The range hood of claim 1, wherein: side wind channel (14) collection petticoat pipe (1) both sides, from top to bottom slope arrangement forward be provided with first exhaust hole (141) of at least one row of vertical arrangement and giving vent to anger forward on side wind channel (14), first exhaust hole (141) with the distance at side wind channel (14) edge is less than 20 mm.

6. The range hood of claim 1, wherein: central wind channel (15) are extended by inlet scoop (11) direction collection petticoat pipe (1) bottom direction down, and arrange perpendicularly on the positive inner wall of collection petticoat pipe (1) be provided with one row at least vertical layout and orientation on the relative both sides wall of central wind channel (15) second exhaust hole (151) that the whirl was given vent to anger regional (16).

7. The range hood of claim 1, wherein: the first exhaust hole (141) and the second exhaust hole (151) are long holes, polygonal holes, star-shaped holes or special-shaped holes.

8. The range hood of claim 1, wherein: second fan (12) set up on collection petticoat pipe (1) be equipped with the inlet port on collection petticoat pipe (1), the inlet end of second fan (12) with the inlet port intercommunication the inlet end top of second fan (12) is equipped with admits air lid (121), admit air lid (121) cover the inlet port.

9. The range hood of claim 8, wherein: a filtering piece (122) is arranged between the air inlet cover (121) and the air inlet end of the second fan (12), and the filtering piece (122) is used for filtering impurities in the air entering the second fan (12).

10. A range hood according to any one of claims 1-9, wherein: the ventilation pipeline (13) is formed by connecting multiple sections of hard pipes or a hose and an adapter.