CN212408779U

CN212408779U - Range hood with turbofan

Info

Publication number: CN212408779U
Application number: CN202020436298.1U
Authority: CN
Inventors: 吴熙范
Original assignee: Tornado Systems Co Ltd
Current assignee: Tornado Systems Co Ltd
Priority date: 2019-05-24
Filing date: 2020-03-30
Publication date: 2021-01-26
Anticipated expiration: 2030-03-30
Also published as: KR102059802B1; EP3742056A1; JP2020193800A; JP7055974B2; US20200370759A1

Abstract

The utility model relates to a smoke ventilator that possesses turbofan sets up the upper portion at kitchen range to the pollution sources such as smell or smog that will produce when cooking inhales and gets rid of, it includes: a housing provided with an exhaust fan therein; an upper casing combined with the lower end of the casing, forming a through hole communicated with the exhaust fan on the top surface, and guiding the flow of air generated by the turbine fan; a turbo fan provided coaxially with the exhaust fan inside the upper case; and a lower filter housing provided at a lower portion of the turbo fan in a manner separated from the turbo fan.

Description

Range hood with turbofan

Technical Field

The present invention relates to a Range hood, and more particularly, to a Range hood (Range hood) provided above a kitchen Range and having a turbo fan (vortex fan) for sucking and removing a pollution source such as odor and smoke generated during cooking.

Background

The range hood is generally a device for sucking and discharging hot air and smell generated when a range, which is a heating device using gas or electricity, is used, and is installed at the upper end of a sink table to ventilate a kitchen or to effectively use the range hood during cooking by using illumination mounted on a product.

That is, in a range hood for a home or a canteen kitchen, in order to discharge odor and moisture including harmful gas such as steam and polluted air on a gas or electric range to the outside, a range hood including a fan therein is connected to an exhaust duct, and hot air such as waste fluid, harmful gas including polluted air, odor and the like are discharged to the outside through the exhaust duct by suction force of the range hood, and a filter made of a metal mesh or a nonwoven fabric is provided on a bottom surface of the range hood.

However, although the conventional range hood is configured to suck and discharge air around a cooking space by simply using a suction force of an exhaust fan provided therein, generally, there is a physical limitation in a suction force of the exhaust fan, that is, a suction flow rate is reduced to 1/10 of a fan inlet flow rate as long as the range hood is separated from a diameter of the fan, and therefore, when cooking foods having a large amount of smell or grease, even if the range hood is opened to the maximum, there is a problem in that harmful gas and smell generated during cooking cannot be smoothly discharged and spread into a room.

According to legal regulations, the range hood needs to be arranged at a position which is more than 600mm away from a fire source. However, in the case of the general hood, the suction flow rate is reduced to almost 0m/s as long as it is 100mm away from the hood inlet, and thus the pollutant generated during cooking cannot be absorbed. Of course, steam or the like generated during heating at a high temperature can be discharged as long as it can be raised to the hood inlet by the high temperature. However, heavy pollutants having a mass such as fine dust or odor particles cannot be absorbed but are scattered into the room.

In order to solve such a problem, it is a conventional only method to increase the suction force, i.e., the suction flow rate by increasing the air volume by increasing the rotation speed of an exhaust fan provided inside the range hood. However, it is not realistic to increase the intake flow rate by eight times if the intake flow rate is increased by two times according to the fan law, and it is preferable to increase the intake flow rate by about 26% by increasing the air volume by about two times. If the air volume is increased by two times, the noise is inevitably increased, so that the problem that housewives dislike using the range hood exists.

Therefore, even in a state where the hood is installed, the exhaust effect of the pollution source is actually weak, and thus the pollution source is generally separately exhausted by opening a window or a hall door, which is an unreasonable problem in view of the modern social requirement of preventing noise and maximizing cooling and heating efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve aforementioned problem and propose, its purpose provides one kind can prevent the harmful gas and smell and steam including various pollutants that produce in the culinary art process to the peripheral indoor smoke ventilator of diffusion of culinary art space.

Another object of the present invention is to provide a range hood which can achieve rapid and smooth exhaust, thereby providing a comfortable indoor environment and improving convenience in use.

It is still another object of the present invention to provide a range hood in which a filter member is provided at a lower portion of a turbo fan, and a flow of an air current generated by the turbo fan is not obstructed by the filter member.

In order to achieve the above object, the present invention provides a range hood, which includes: a housing provided with an exhaust fan therein; an upper casing coupled to a lower end of the casing, having a through hole formed in a top surface thereof to communicate with the exhaust fan, and guiding a flow of air generated by the turbo fan; the turbo fan provided inside the upper case coaxially with the exhaust fan; and a lower filter casing provided below the turbo fan so as to be separated from the turbo fan.

According to a feature of the present invention, an exhaust space is formed between an outer side surface of the lower filter housing and an inner side surface of the upper housing.

According to another feature of the present invention, the filter device further includes a plurality of support columns coupled along a periphery of the lower filter housing such that the lower filter housing is supported at a lower portion of the turbofan at a predetermined interval from the turbofan.

According to still another feature of the present invention, a separation space is formed between an upper surface of the lower filter case and a top surface of the upper case, the turbo fan is disposed in the separation space, and an air flow pushed outward by the turbo fan is discharged through the exhaust space to form a vortex flow in an outer lower portion of the lower filter case.

According to still another feature of the present invention, the upper housing has: a top surface on which the through hole is formed; and an inclined surface inclined outward and downward along the periphery of the top surface.

According to still another feature of the present invention, a mounting hole is formed in the lower filter housing so as to penetrate therethrough, and a filter member facing the turbofan is coupled to the mounting hole.

According to still another feature of the present invention, the exhaust fan further includes a driving motor provided inside the housing to power operation of the exhaust fan.

According to still another feature of the present invention, the turbofan is coupled to a lower end of the rotary shaft of the exhaust fan, which protrudes to a lower portion of the top surface of the upper case through the through hole.

According to a further feature of the present invention, the plurality of support posts are coupled to the upper side of the lower filter housing along the upper side of the lower filter housing at one end and the top surface of the upper housing at the other end.

According to a further feature of the present invention, the plurality of support columns are coupled to the outer side of the lower filter housing along the outer side of the lower filter housing at one end and the inner side of the upper housing at the other end.

According to the utility model discloses a smoke ventilator forms the vortex through the lower part both sides at lower part filter housing to can prevent the indoor diffusion of the pollutant that produces at the culinary art in-process.

In addition, according to the utility model discloses a smoke ventilator, through exhaust fan and turbofan's interact, compare with the current condition that only relies on exhaust fan, can exert the suction in wider scope to thereby the velocity of flow of updraft becomes fast and can remove pollutants and smell fast.

Drawings

Fig. 1 is a perspective view of a range hood equipped with a turbofan according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of fig. 1.

Fig. 3 is a cross-sectional view of fig. 1.

Fig. 4 is a use state diagram of a range hood provided with a turbofan according to an embodiment of the present invention.

Description of the symbols

100: smoke exhaust ventilator

200: outer casing

210: exhaust fan

211: rotating shaft

220: driving motor

221: motor casing

300: upper shell

311: through hole

400: turbine fan

460: separation space

500: lower filter casing

510: mounting hole

600: filter element

700: exhaust space

800: support column

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the following embodiments are merely detailed descriptions for enabling a person having ordinary knowledge in the art to easily implement the present invention, and it is not intended that the scope of the present invention is limited thereby. In describing the various embodiments of the present invention, the same reference numerals are used for the components having the same technical features.

Fig. 1 is a perspective view of a range hood including a turbofan according to an embodiment of the present invention, fig. 2 is an exploded perspective view of fig. 1, and fig. 3 is a sectional view of fig. 1.

As shown in fig. 1 to 3, a range hood 100 (hereinafter, referred to as "range hood") having a turbofan according to an embodiment of the present invention includes: a housing 200 provided with an exhaust fan 210; an upper case 300 coupled with a lower end of the outer case 200; a turbo fan 400 provided inside the upper case 300; and a lower filter housing 500 provided at a lower portion of the turbo fan 400 in a manner separated from the turbo fan 400.

Here, the casing 200, the upper case 300, the turbo fan 400, and the lower filter case 500 may be made of a metal material or a plastic material, such as stainless steel or aluminum, which is not easily rusted.

The housing 200 is provided at an upper portion of the cooking appliance in the kitchen, separately from the cooking appliance, and an exhaust fan 210 and a driving motor 220 for powering the operation of the exhaust fan 210 are provided inside the housing 200. As the exhaust fan 210, a well-known centrifugal fan (a sirocco fan, a turbo fan, or the like) or an axial fan or the like can be applied, and a motor case 221 that houses the drive motor 220 is coupled to the upper portion of the casing 200. Meanwhile, an exhaust duct (not shown) for discharging the pollutants to the outside may be coupled to one side of the housing 200 or the motor housing 221.

An upper case 300 is coupled to a lower end of the outer case 200. In this case, the upper case 300 has a shape in which the width gradually increases from the upper end toward the lower end, and includes a top surface 310 in which a circular through hole 311 is formed, and an inclined surface 320 inclined outward and downward along the periphery of the top surface 310. In the case of the embodiment shown in the drawings, although the upper case 300 of a quadrangular frustum shape including the top surface 310 of a quadrangular plate shape and the inclined surfaces 320 inclined outward from the four corners of the top surface 310 is illustrated, this is only one embodiment of the present invention, and the overall appearance of the upper case 300 may be appropriately selected as needed as long as the upper case includes the top surface 310 and the inclined surfaces 320 inclined outward downward along the periphery of the top surface 310.

In addition, the through hole 311 formed at the top surface 310 of the upper case 300 is formed in such a manner as to communicate with the exhaust fan 210 provided at the outer case 200, so that smoke and harmful substances generated during cooking can be sucked into the exhaust fan 210 through the through hole 311.

The exhaust fan 210 is disposed at an upper portion of the through hole 311, and a lower end of the rotation shaft 211 of the exhaust fan 210 protrudes to a lower portion of the top surface 310 of the upper housing 300 through the through hole 311. Thus, the turbo fan 400 may be coupled to the rotation shaft 211 protruding to the lower portion of the top surface 310 of the upper housing 300. That is, the exhaust fan 210 and the turbo fan 400 may be rotationally operated in an integrated manner by the same rotational shaft 211.

In this case, the turbo fan 400 includes: a shaft portion 410 having a hollow cylindrical shape to be coupled to the rotation shaft 211; a circular band-shaped member 420 formed on the radially outer side of the shaft portion 410 so as to surround the shaft portion 410, and spaced apart from the shaft portion 410; a plurality of connection bars 430 formed to extend radially to an inner side surface of the circular band member 420 along a circumference of an outer side surface of the shaft portion 410; a rotating plate 440 formed to expand in a ring (ring) shape along the outer side surface lower end circumference of the circular band member 420; and a plurality of pin members 450 formed to protrude from an upper side surface of the rotating plate 440 at a predetermined interval from each other in a perpendicular manner. However, this is merely an embodiment of the present invention, and the specific configuration of the turbofan 400 may be appropriately modified as necessary.

In the lower portion of the turbo fan 400, a lower filter case 500 is provided separately from the turbo fan 400. For example, the lower filter case 500 may be formed in a quadrangular frame shape as shown in the drawing, and a mounting hole 510 for coupling the filter member 600 is formed in a penetrating manner inside the lower filter case 500. The filter member 600 coupled to the mounting hole 510 of the lower filter housing 500 may be formed of, for example, a grid (grill) in a grid pattern for preventing inflow of the substances, facing the upper turbo fan 400.

According to the range hood 100 of an embodiment of the present invention, the exhaust space 700 is formed between the outer side surface of the lower filter housing 500 and the inner side surface of the upper housing 300, and the air flow pushed out to the outside from the separation space 460 between the lower filter housing 500 and the upper housing 300 by the turbo fan 400 can be discharged to the outside of the upper housing 300 through the exhaust space 700.

At this time, a plurality of support columns (for example, full-thread bolts) 800 that support the lower filter case 500 in a spaced manner are coupled along the periphery of the lower filter case 500 inside the upper case 300. For example, as shown in the drawing, a plurality of support columns 800 may be provided along the periphery of the upper side surface of the lower filter case 500, one end of each support column being coupled to the upper side surface of the lower filter case 500 and the other end of each support column being coupled to the top surface 310 of the upper case 300. As another example, a plurality of support columns 800 may be provided along the outer periphery of the lower filter case 500, one end of each support column being coupled to the outer surface of the lower filter case 500 and the other end of each support column being coupled to the inner surface of the upper case 300.

According to an embodiment of the present invention, the lower filter housing 500 is supported at the lower portion of the turbo fan 400 by a plurality of support columns 800 in a manner separated from the turbo fan 400 by a prescribed interval. Further, the lower filter case 500 is supported inside the upper case 300 by a plurality of support columns 800 at predetermined intervals from the upper case 300, and at this time, an exhaust space 700 is formed between the outer surface of the lower filter case 500 and the inner surface of the upper case 300.

That is, according to the range hood 100 of the embodiment of the present invention, the filter member 600 of the lower filter case 500 may be disposed to face the lower portion of the turbo fan 400, and the air flow discharged from the turbo fan 400 may naturally flow to the outside of the lower filter case 500 through the exhaust space 700 formed between the outer surface of the lower filter case 500 and the inner surface of the upper case 300.

Fig. 4 is a use state diagram of the range hood according to one embodiment of the present invention.

The turbo fan 400 is disposed in a separation space 460 between the upper side of the lower filter housing 500 and the top surface of the upper housing 300, and the exhaust fan 210 and the turbo fan 400 rotate together when the driving motor 220 is operated.

The turbo fan 400 pushes the air of the separation space 460 outward when rotating, and the thus pushed air flows downward along the inclined surface of the upper case 300, and is then discharged to the outside of the upper case 300 through the exhaust space 700 between the outer side surface of the lower filter case 500 and the inner side surface of the upper case 300.

The air flow discharged to the outside of the upper case 300 is returned by the suction force of the exhaust fan 210 to form a vortex flow at the outside lower portion of the lower filter case 500. That is, a low pressure zone is formed in the outer peripheral portion of the lower filter casing 500, and an updraft occurs in the central portion where the exhaust fan 210 and the turbo fan 400 are arranged. The ascending air current is enhanced by the suction force of the exhaust fan 210, and as the exhaust fan 210 is rotationally driven together with the turbo fan 400, the circular low-pressure zone performs a circular motion, and thus the generated cyclone air current can trap the gas in a wide range of fields. At this time, the center of the cyclone airflow is a very low pressure zone, and the exhaust fan 210 receives a lifting force, so that the airflow rises at a high speed. Therefore, according to the range hood 100 of one embodiment of the present invention, indoor pollutants and odors can be discharged strongly and rapidly.

While the embodiments of the present invention have been described above, it is to be understood that the present invention may be variously modified by those having ordinary knowledge in the art without departing from the scope of the present invention.

Claims

1. A range hood provided with a turbofan, comprising:

a housing provided with an exhaust fan therein;

an upper casing coupled to a lower end of the casing, having a through hole formed in a top surface thereof to communicate with the exhaust fan, and guiding a flow of air generated by the turbo fan;

the turbo fan provided inside the upper case coaxially with the exhaust fan; and

and a lower filter casing provided below the turbo fan so as to be separated from the turbo fan.

2. The range hood with a turbofan according to claim 1,

an exhaust space is formed between an outer side surface of the lower filter case and an inner side surface of the upper case.

3. The range hood with a turbofan according to claim 2,

and a plurality of support columns coupled along a circumference of the lower filter housing such that the lower filter housing is supported at a lower portion of the turbo fan to be spaced apart from the turbo fan by a predetermined interval.

4. The range hood with a turbofan according to claim 2,

a separation space is formed between an upper side surface of the lower filter casing and a top surface of the upper casing, the turbo fan is disposed in the separation space, and an air flow pushed outward by the turbo fan is discharged through the exhaust space to form a vortex flow in an outer lower portion of the lower filter casing.

5. The range hood with a turbofan according to claim 1,

the upper housing includes: a top surface on which the through hole is formed; and an inclined surface inclined outward and downward along the periphery of the top surface.

6. The range hood with a turbofan according to claim 1,

a mounting hole is formed in the lower filter housing so as to penetrate therethrough, and a filter member facing the turbo fan is coupled to the mounting hole.

7. The range hood with a turbofan according to claim 1,

the air conditioner also comprises a driving motor which is arranged in the shell and used for providing power for the operation of the exhaust fan.

8. The range hood with a turbofan according to claim 1,

the turbo fan is coupled to a lower end of the rotary shaft of the exhaust fan, which protrudes through the through hole to a lower portion of the top surface of the upper housing.

9. The range hood with a turbofan according to claim 3,

the support columns are coupled to the upper side of the lower filter casing at one end and to the top surface of the upper filter casing at the other end along the periphery of the upper side of the lower filter casing.

10. The range hood with a turbofan according to claim 3,

the support columns are coupled to the outer surface of the lower filter casing at one end and to the inner surface of the upper filter casing at the other end along the outer periphery of the lower filter casing.