CN111981526A

CN111981526A - Fume exhaust fan

Info

Publication number: CN111981526A
Application number: CN201911408916.XA
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: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-24

Abstract

The invention discloses a range hood, which comprises a fume collecting hood, a first air suction opening arranged at the top of the inner side of the fume collecting hood, a box body arranged on the fume collecting hood and a first air outlet arranged on the box body, wherein an air suction assembly and an air blowing assembly which coaxially rotate are arranged in the box body, the middle part of the inner side of the fume collecting hood is provided with a lug which divides the inner side of the fume collecting hood into two areas, the front surface of the lug is a plane which is inclined downwards, a reducing arc surface is respectively arranged between the two sides of the plane and the front surface of the inner side of the smoke collecting hood, the reducing arc surface is concave, a plurality of exhaust holes are vertically arranged on the plane, the air outlet of the air suction component is communicated with the first air outlet, the air inlet of the air blowing component is communicated with the outside, and a ventilating pipeline is communicated between the air outlet of the air blowing component and the exhaust hole.

Description

Fume exhaust fan

Technical Field

The invention relates to the field of kitchen utensils, in particular to a 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.

Disclosure of Invention

Aiming at the defects in the prior art, the technical problems to be solved by the invention are as follows: the oil smoke or pollutant is prevented from escaping due to disturbance of external air flow, and the smoke collecting and smoking effects of the range hood are improved.

The utility model provides a range hood, includes collection petticoat pipe, sets up at the first air suction opening at the inboard top of collection petticoat pipe, sets up the box on the collection petticoat pipe and sets up the first air outlet on the box, be equipped with coaxial pivoted subassembly and the subassembly of blowing of induced drafting in the box the inboard middle part of collection petticoat pipe is equipped with the inboard lug that falls into two regions with the collection petticoat pipe, the front of lug is the plane of downward sloping, planar both sides respectively with collect and be equipped with the reducing arc surface between the inboard front of petticoat pipe, the reducing arc is personally submitted interior concavity vertical arrangement has a plurality of exhaust hole on the plane, the air outlet and the first air outlet of the subassembly of induced drafting are linked together, and its air intake is linked together with first air suction opening, the air intake and the outside of the subassembly of.

Further, the subassembly that induced drafts includes first spiral case and sets up the first fan in first spiral case, the subassembly that induced drafts includes the second spiral case and sets up the second fan in the second spiral case, first spiral case and second spiral case set up side by side, first fan and second fan stretch the coaxial drive of motor through the biax, the air intake of first spiral case with first inlet scoop is linked together, its air outlet with first air outlet is linked together be equipped with the second inlet scoop on the box, the air intake of second spiral case with the second inlet scoop is linked together, its air outlet through air pipe with the exhaust hole is linked together.

Furthermore, one end of the reducing arc surface is tangent to the front surface of the inner side of the smoke collecting hood, and the other end of the reducing arc surface is tangent to the front surface direction of the convex block.

Furthermore, any horizontal section of the variable diameter arc surface is a quarter arc.

Further, the diameter of the variable diameter arc surface gradually increases from bottom to top.

Further, the exhaust holes are long holes, polygonal holes, star-shaped holes or special-shaped holes.

Preferably, the distance between the vent hole and the edge of the plane is less than 20 mm.

Preferably, the first volute and the second volute are integrally provided.

In the first embodiment, the ventilation pipeline is formed by connecting multiple sections of hard pipes.

In the second embodiment, the ventilation pipeline is composed of a hose and an adapter.

Compared with the prior art, the invention at least comprises the following beneficial effects:

when the double-shaft stretching motor works, the double-shaft stretching motor is started, so that the air suction assembly and the air blowing assembly are driven to work, wherein the air suction assembly sucks external air from the first air suction opening and discharges the external air from the first air outlet, the air blowing assembly sucks the external air from the second air suction opening, and the air flows through the ventilation pipeline and is discharged from the exhaust hole. Because the viscous effect of gas, the high-speed air current of exhaust hole exhaust can drive peripheral gas flow, because the existence of arc surface, gas can form the whirl, the ascending suction of the subassembly that induced drafts in the cooperation forms the ascending air current of spiral, can form the effect of gathering together of the rotary absorption in advance at oil smoke gaseous diffusion, prevent that the oil smoke diffusion from escaping, reach the effect that high efficiency was gathered together cigarette, smoking, and can cut into different regions with the oil smoke through the whirl, when preventing the oil smoke diffusion, prevent outside air current interference.

Drawings

FIG. 1 is a perspective view of a range hood according to the present invention;

FIG. 2 is an exploded perspective view of a range hood according to the present invention;

fig. 3 is an exploded perspective view of a second range hood according to the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of the claims of the present invention.

As shown in fig. 1-3, a range hood comprises a smoke collecting hood 1, a first air inlet 10 disposed at the top of the inner side of the smoke collecting hood 1, a box 2 disposed on the smoke collecting hood 1, and a first air outlet 20 disposed on the box 2, wherein a coaxially rotating air suction assembly 21 and an air blowing assembly 22 are disposed in the box 2, a protrusion 11 for dividing the inner side of the smoke collecting hood 1 into two regions is disposed in the middle of the inner side of the smoke collecting hood 1, the front surface of the protrusion 11 is a downwardly inclined plane 12, variable-diameter arc surfaces 13 are disposed between the two sides of the plane 12 and the front surface of the inner side of the smoke collecting hood 1, the variable-diameter arc surfaces 13 are concave, a plurality of exhaust holes 14 are vertically arranged on the plane 12, the exhaust holes 14 are disposed in the tangential direction toward the variable-diameter arc surfaces 13, and drive the air in the smoke collecting hood to flow along the variable-diameter arc surfaces 13, forming a rotational flow, wherein an air outlet of the air suction assembly 21 is communicated with a first air outlet 20, an air inlet thereof is communicated with a first air suction opening 10, an air inlet of the air blowing assembly 22 is communicated with the outside, an air vent 15 is communicated between an air outlet thereof and an air exhaust hole 14, the air suction assembly 21 comprises a first volute 210 and a first fan 211 arranged in the first volute 210, the air blowing assembly 22 comprises a second volute 220 and a second fan 221 arranged in the second volute 220, the first volute 210 and the second volute 220 are arranged in parallel, the first fan 211 and the second fan 221 are coaxially driven by a double-shaft extension motor 23, the air inlet of the first volute 210 is communicated with the first air suction opening 10, the air outlet thereof is communicated with the first air outlet 20, a second air suction opening 16 is arranged on the box body 2, and the air inlet of the second volute 220 is communicated with the second air suction opening 16, its air outlet pass through air pipe 15 with exhaust hole 14 is linked together, and during operation, the biax stretches motor 23 and starts to the drive subassembly 21 that induced drafts, the subassembly 22 work of blowing, wherein induced drafts subassembly 21 and inhales external gas from first inlet scoop 10, discharges from first air outlet 20, and the subassembly 22 of blowing inhales external gas from second inlet scoop 16, and air current is discharged from exhaust hole 14 through air pipe 15. Because of the viscous effect of gas, the high-speed air current of exhaust hole 14 exhaust can drive peripheral gas flow, because the existence of reducing arc surface 13, gas can form the whirl, the ascending suction of subassembly 21 that induced drafts in the cooperation forms the ascending air current of spiral, can form the effect of gathering together of the rotary suction in the past in oil smoke gas diffusion, prevent that the oil smoke diffusion from escaping, reach the high efficiency and gather together the cigarette, smoking's effect, and can cut into different regions with the oil smoke through the whirl, when preventing the oil smoke diffusion, prevent outside air current interference.

One end of the reducing arc surface 13 is tangent to the front surface of the inner side of the smoke collecting hood 1, and the other end of the reducing arc surface 13 is tangent to the front surface direction of the convex block 11, so that airflow can easily form rotational flow when moving along the reducing arc surface 13.

Any horizontal section of the reducing arc surface 13 is a quarter arc, so that the airflow can easily form rotational flow when moving along the reducing arc surface 13.

The diameter of the arc of the variable-diameter arc surface 13 is gradually increased from bottom to top, the diameter of the arc surface is gradually increased from bottom to top, so that airflow is easier to form rotational flow, and the mode of forming tornado improves the smoking efficiency and the cigarette gathering effect.

The exhaust holes 14 are long holes, polygonal holes, star-shaped holes or special-shaped holes, and the exhaust holes 14 are used for exhausting air.

The distance between the vent hole 14 and the edge of the plane 12 is less than 20mm, which is the optimal distance between the vent hole 14 and the edge of the plane 12.

According to the invention, the first volute 210 and the second volute 220 are integrally arranged, so that the assembly is more convenient, and the installation efficiency is improved.

The ventilation pipeline 15 is formed by connecting multiple sections of hard pipes, so that the durability can be improved, and deformation can be prevented.

The ventilation pipeline 15 provided by the invention is composed of a hose and an adapter, and can improve the durability and save the space.

The above-mentioned embodiments are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the most preferred embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions, equivalents, etc. made within the scope of the principles of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a range hood, includes collection petticoat pipe (1), sets up first air outlet (10) at the inboard top of collection petticoat pipe (1), sets up box (2) on collection petticoat pipe (1) and sets up first air outlet (20) on box (2), its characterized in that: an air suction component (21) and an air blowing component (22) which rotate coaxially are arranged in the box body (2), the middle part of the inner side of the fume collecting hood (1) is provided with a convex block (11) which divides the inner side of the fume collecting hood (1) into two areas, the front surface of the convex block (11) is a plane (12) which is inclined downwards, variable diameter circular arc surfaces (13) are respectively arranged between the two sides of the plane (12) and the front surface of the inner side of the fume collecting hood (1), the variable diameter circular arc surfaces (13) are concave inwards, a plurality of exhaust holes (14) are vertically arranged on the plane (12), the air outlet of the air suction component (21) is communicated with the first air outlet (20), the air inlet of the air blowing component (22) is communicated with the outside, a ventilating duct (15) is communicated between the air outlet and the exhaust hole (14).

2. A range hood according to claim 1, wherein: air suction assembly (21) includes first spiral case (210) and first fan (211) of setting in first spiral case (210), air suction assembly (22) includes second spiral case (220) and second fan (221) of setting in second spiral case (220), first spiral case (210) and second spiral case (220) set up side by side, motor (23) coaxial drive is stretched through the biax in first fan (211) and second fan (221), the air intake of first spiral case (210) with first air intake (10) are linked together, its air outlet with first air outlet (20) are linked together be equipped with second inlet scoop (16) on box (2), the air intake of second spiral case (220) with second inlet scoop (16) are linked together, its air outlet through air pipe (15) with exhaust hole (14) are linked together.

3. The range hood of claim 1, wherein: one end of the reducing arc surface (13) is tangent to the front side of the inner side of the smoke collecting hood (1), and the other end of the reducing arc surface (13) is tangent to the front side direction of the bump (11).

4. The range hood of claim 1, wherein: any horizontal section of the reducing arc surface (13) is a quarter arc.

5. The range hood according to any one of claims 1 to 4, wherein: the diameter of the variable diameter arc surface (13) is gradually increased from bottom to top.

6. The range hood according to any one of claims 1 to 4, wherein: the exhaust holes (14) are long holes, polygonal holes, star-shaped holes or special-shaped holes.

7. The range hood of claim 6, wherein: the distance between the vent hole (14) and the edge of the plane (12) is less than 20 mm.

8. The range hood according to any one of claims 1 to 4 or 7, wherein: the first volute (210) and the second volute (220) are integrally arranged.

9. The range hood according to any one of claims 1 to 4 or 7, wherein: the ventilation pipeline (15) is formed by connecting a plurality of sections of hard pipes.

10. The range hood according to any one of claims 1 to 4 or 7, wherein: the ventilation pipeline (15) is composed of a hose and an adapter.