KR102119554B1 - Ventilator hood using cycloid curve - Google Patents

Abstract

Disclosed is a fan hood with a cycloid curve. The present invention is a hood connected to one side of a duct forming a space for sucking and transporting gas to form an inlet through which the gas is sucked, wherein the hood is connected to the duct and has a first radius and a connection It forms an inlet for suction and includes a suction portion having a second radius larger than the first radius, and a cycloid portion extending while forming a cycloidal curve connecting the connection portion and the suction portion,
According to the present invention, compared to the same output, the amount of gas that is sucked and discharged to the outside is increased, which is efficient.

Description

Ventilator hood using cycloid curve

The present invention relates to a hood of a ventilator which is installed to discharge indoor air of a kitchen, room, etc. to the outside, and more specifically, a ventilator applying a cycloid curve that improves the performance of the ventilator by applying a cycloid curve to the hood of the ventilator. It's about the hood.

In general, when cooking various foods at homes, restaurants, etc., a fan is installed to intake combustion and exhaust gas and discharge it to the outside so that the generated combustion gas and exhaust gas containing various odor components do not diffuse into the room.

The ventilator generally forms a passage for transporting gas through a built-in ventilator or duct that closes to the wall according to its installation position and discharges gas to the outside by rotating the fan, and is provided on the upper part of the place where the gas is discharged. It can be divided into the type of emitting the outside.

In particular, the structure using the duct is provided with a hood for sucking air at the bottom of the duct. In general, the hood has a polygonal shape such as a square or a trapezoid when viewed from the side.
When the hood side has a polygonal shape, there is a problem in that ventilation efficiency is not optimized as simply serving as an inlet for collecting air without considering ventilation intake efficiency.

Registered Utility Model Publication No. 20-0210522 (November 6, 2000) Registered Patent Publication No. 10-1126260 (March 06, 2012) Patent Publication No. 10-2009-0045518 (May 8, 2009)

An object of the present invention is to provide a ventilator hood to which a cycloidal curve is applied, which improves the performance of a ventilator using a hood to which a cycloidal curve is applied.

Another object is to provide a fan hood with a cycloid curve compatible with existing ducts.

On the other hand, the object of the present invention is not limited to the object mentioned above, and other objects not mentioned are clearly known to a person having ordinary knowledge in the technical field to which the present invention belongs (hereinafter referred to as a'normal engineer') Will be understandable.

In the hood to apply the cycloid curve according to the present invention for achieving the above object is connected to one side of the duct forming a space for inhaling and transporting gas, the hood forming the intake port, the hood, It is connected to the duct and forms a connection part having a first radius and an intake port for inhaling the gas, and extends while forming a cycloid curve by connecting a suction part having a second radius larger than the first radius, and the connection part and the suction part. It includes a cycloidal portion.

Preferably, the hood is characterized by consisting of at least two or more sections.

According to the present invention, compared to the same output, the amount of gas to be sucked and discharged to the outside is increased to be efficient.

In addition, it is advantageous in terms of maintenance and maintenance by being compatible with existing ducts.

The effects of the present invention are not limited to those described above, and other effects not mentioned will be apparent to those skilled in the art from the following description.

1 is a view showing a perspective view of a ventilator hood to which a cycloid curve is applied according to an embodiment of the present invention.
FIG. 2 is a top view of FIG. 1.
Fig. 3 is a side view of Fig. 1;
4 is a view showing a section of a fan hood to which a cycloid curve is applied according to another embodiment of the present invention.
5 is a graph showing the results of a comparison experiment of carbon monoxide concentration reduction time using hoods of different shapes.

Hereinafter, the present invention will be described in more detail with reference to the drawings. It should be noted that the same components in the drawings are denoted by the same reference numerals wherever possible. In addition, descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention are omitted.

In addition, various modifications may be made to the embodiments described below. It should be understood that the examples described below are not intended to limit the embodiments, and include all modifications, equivalents, or substitutes thereof.

It will be described logically according to the drawings below.

1 is a view showing a perspective view of a fan hood applying a cycloid curve according to an embodiment of the present invention, FIG. 2 is a top view of FIG. 1, and FIG. 3 is a side view of FIG.

1 to 3, the ventilator hood 10 to which the cycloid curve of this embodiment is applied includes a connecting portion 110, a suction portion 150, and a cycloid portion 130, and the cycloid portion 130 is a cycloid curve (100) was applied.

The connecting portion 110 is connected to a duct forming a space for sucking and transporting gas, and may have a first radius, and the first radius means a radius of a circle formed by the connecting portion.

The suction unit 150 forms an inlet for sucking gas, and may have a second radius larger than the first radius, and the second radius means a radius of a circle formed by the suction unit.

The cycloid unit 130 connects the connection unit 110 and the suction unit 150 and forms a cycloidal curve 100, but along the inclined surface formed by the cycloidal curve 100 from the connection unit 110 to the suction unit 150 You will be able to form the face of.

The cycloid curve 100 is a trajectory drawn by a vertex on the circumference when the circle rotates without slipping along a straight line on the plane.

According to the cycloid curve 100, the gas that is sucked from the suction unit 150 and moves along the cycloid unit 130 to the connection unit 110 has a greater initial acceleration than a straight line, passes through a certain point quickly, and has a longer distance than the straight line by inertia. However, as a result, it may move faster than linear motion.

Experimental example. Carbon monoxide reduction measurement test according to hood shape

The results of measuring changes in the amount of carbon monoxide reduction over time under the same conditions for the hood to which the cycloid curve 100 is applied, the square hood, and the spherical hood are shown in Table 1 below.

Hood type
CO concentration (ppm) Square hood Spherical hood Cycloid hood 250 16.07s 11.25s 6.54s 200 33.16s 26.06s 16.05s 150 49.25s 41.48s 27.65s 100 68.34s 54.11s 38.08s

After the same condition to produce a closed acrylic barrel having a hole having a certain area,

After burning the mosquito incense inside the produced acrylic barrel for 1 minute and filling the gas generated by incomplete combustion, the concentration of carbon monoxide is measured,

After removing the mosquito scent inside the acrylic barrel until the concentration of carbon monoxide reaches 300 ppm,

After installing the hood having each of the different shapes in the hole having the constant area,

The time until the concentration of the carbon monoxide reaches 100 ppm is measured.

5 is a graph measuring the time taken from a time when the concentration of carbon monoxide is from 300 ppm to 250 ppm to a time when it becomes 100 ppm in order to measure a more accurate time point.

In the case of a rectangular hood, it took about 70 seconds to reduce the concentration of carbon monoxide from 250 ppm to 100 ppm, and in the case of a spherical hood, it took about 55 seconds to reduce the concentration of carbon monoxide from 250 ppm to 100 ppm, and in the case of a cycloid hood, it took about 37 seconds. Can be seen.

The above-described result may be an error of about 1 second as a record of the timer according to the decrease displayed on the monitor, but when comparing the reduction amount of carbon monoxide concentration according to the shape of each hood, the square hood is about 1.9 times more than the hood with the cycloid curve It took a lot of time, and it can be seen that the spherical hood took about 1.47 times more time than the hood with a cycloid curve.

That is, when the same external environment and the same output by the same motor are used, it can be seen that the present invention to which the cycloid curve is applied has better ventilation efficiency of gas than a hood adopting a general square or a hood adopting a spherical shape.

4 is a view showing a section of a hood of a ventilator to which a cycloid curve is applied according to another embodiment of the present invention.

Referring to Figure 4, the vent hood section 200 of the present embodiment is composed of at least two or more sections 200 includes a connecting portion 210, a cycloid portion 230, a suction portion 250,

As the sections 200 are connected to each other, the connecting portion, the cycloid portion, and the suction portion having a constant radius may be formed.

That is, according to the present embodiment, the user can assemble each section along the outer circumferential surface of the duct for compatibility with the existing duct, thereby forming one completed hood, which is easy to maintain and maintain, and has an advantage in economical aspects. have.

The section 200 may be preferably made of eight, and by sanding the surface of each section 800 with sandpaper to minimize the friction of the surface, each section can be connected to form one hood. .

On the other hand, the present invention is not limited by the embodiments of the present invention and the accompanying drawings in the above description, it is apparent to those skilled in the art that various substitutions, modifications and changes are possible without departing from the technical spirit of the present invention. something to do.

10: ventilator hood with cycloid curve
100: cycloid curve
110,210: connection
130,230: Cycloid
150,250: suction
200: intercept

Claims (2)

In the hood that is connected to one side of the duct forming a space for inhaling and transporting gas to form an inlet through which the gas is sucked,
The hood,
It is connected to the duct and has a connection having a first radius
An inlet that forms an inlet for inhaling the gas and has a second radius greater than the first radius, and
A ventilator hood with a cycloidal curve including a cycloidal portion extending while forming a cycloidal curve connecting the connection portion and the suction portion.
According to claim 1,
The hood is a ventilator hood with a cycloid curve, characterized in that consisting of at least two or more sections.

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