KR20180116014A - Head wind prevention ventilation cap for direct exhaust - Google Patents

Abstract

The present invention relates to a head wind prevention ventilation cap for direct exhaust and, more specifically, relates to a head wind prevention ventilation cap for direct exhaust, which is improved with a structure capable of reducing air resistance to minimize interference caused by outside wind pressure for noise to be reduced, and prevent a decline in ventilation efficiency. Moreover, exhaust performance of indoor air can be maximized.

Description

[0001] The present invention relates to a head wind prevention ventilation cap for a direct-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilating cap for preventing backflow for a direct-ventilator, and more particularly to a ventilating cap for ventilating an outside wall, To a ventilating cap for preventing backlash for a direct-ventilator in which the interference due to external wind pressure is minimized and the ventilation performance is enhanced.

BACKGROUND ART [0002] Generally, a ventilation system (hereinafter referred to as a " direct exhaust system ") is installed so as to protrude through an outer wall of a building so that indoor air such as a kitchen and a bathroom is exhausted individually for each household. And a ventilation cap connected to the exhaust duct for venting contaminated indoor air such as a kitchen and a bathroom to the outside.

With respect to such a ventilation cap,

According to Korean Utility Model Registration No. 20-0201440 (Patent Document 1), an oblique surface of an outer cover forms an end line on one side of a round protruding portion, and at the same time, And a guide vane extending into the inner space between the air vents is formed as an oblique surface so as to simplify and simplify the manufacturing process. have.

According to Korean Patent Registration No. 10-1197155 (Patent Document 2), in order to construct a ventilation cap, a head and a body are sequentially manufactured by using a single metal plate instead of manufacturing a head and a body, respectively A technique for manufacturing a vent cap and a vent cap capable of shortening a manufacturing process and reducing manufacturing cost has been disclosed.

According to Korean Patent No. 10-1543603 (Patent Document 3), there is provided a washing machine comprising a main body having an inflow preventing blade inclined outward so as to prevent wind from flowing back to the duct from the outside, And a cover for blocking the flow path to form a bypass, so that the air inside can be smoothly discharged, but it is possible to prevent air from flowing backward from the outside to the inside, thereby efficiently ventilating the air and preventing the backflow of rainwater from the outside A ventilating cap having a waterproof ventilation cap is disclosed.

However, in the ventilation cap of the above-described Patent Document 1, there is a problem that the flow of the airflow is not smooth due to the ventilation hole through which the indoor air is discharged and the ventilation holes are formed between the beveled surfaces, There is a problem that the room air flows backward indoors.

The ventilation cap of Patent Document 2 also has an effect of blocking the inflow of rainwater with the downward direction formed by the through hole through which the airflow is discharged. However, when the flow of the airflow is limited and the external wind pressure is generated downward, There is a problem that is not smooth.

The ventilation cap disclosed in Patent Document 3 has a narrow space in which a through hole is formed between the inflow preventing blades of the main body and the cover to prevent the outside air and the rainwater from flowing back due to the external wind pressure, There is a problem in that ventilation efficiency is lowered due to blocking of ventilation due to the generation of thrust in the direction of the wall from the ceiling to the ventilation of the ventilation hole.

As described above, the conventional ventilation cap has a problem in that ventilation efficiency is deteriorated due to changes in the external wind pressure, and noise is generated due to exhaustion of a large capacity.

Patent Document 1: KR 20-0201440 Y1 2000. 08. 21 Patent Document 2: KR 10-1197155 B1 Patent Literature 3 KR 10-1543603 B1 2015 08. 13

Accordingly, it is an object of the present invention to solve the above-described problems of the prior art, and it is an object of the present invention to provide a ventilation cap which can reduce the air resistance, thereby reducing noise caused by external wind pressure minimization, And it is an object of the present invention to provide a ventilating cap for preventing backflow for a direct ventilator which maximizes the exhausting performance of indoor air.

According to a first aspect of the present invention, there is provided a ventilation system including a main body coupled to an exhaust duct communicating with a room side, an exhaust port coupled to an end of the main body to exhaust the exhaust air flow, And a filtration member provided between the exhaust port and the blocking cover, wherein the blocking cover is spaced apart from the exhaust port by a plurality of supporting members at a predetermined interval Shaped air distribution surface protruding to cut off the front wind while reducing the air resistance of the front wind pressure in the outward direction and the side wind is flowed back to the air outlet while reducing the air resistance of the upper wind wind pressure and the side wind wind pressure in the inner direction And the air induction surface is protruded from the edge of the air dispersion surface and the discharge inducing surface And a vortex eliminating piece for radially distributing the external wind laterally.

In addition, the exhaust port is formed with a discharge oil tool protruding from the coupling flange so as to pass through the inside and the outside of the coupling flange to discharge the exhaust air stream, and the discharge induction port is formed by a vertically- And is formed so as to have an inclined surface of a predetermined shape.

Further, between the inclined surface of the discharge inducing port and the discharge inducing surface of the blocking cover, the wind speed is increased according to the structure guided to be narrowed toward the central portion, so that it is prevented from flowing backward to the exhaust port during the inflow of the side wind, A reverse flow preventing section is provided.

In addition, the support member is formed in a cylindrical shape so as to reduce air resistance.

According to the present invention, the blocking cover protruding inward and outward is formed in front of the air outlet so as to reduce the air resistance due to the external wind pressure, so that the interference due to the external wind pressure is minimized, And the ventilation efficiency is improved by maximizing the exhaust performance of the indoor airflow.

In addition, by providing a ventilation cap with an improved ventilation efficiency due to improved ventilation efficiency, it is possible to reduce power requirements of a range hood and a bathroom fan required for direct exhaust facilities, thereby reducing facility costs and reducing operating costs. There is a great effect that the ventilation equipment of the residential environment can be provided at an economical cost.

1 is an exploded perspective view showing a ventilation cap according to the present invention;
Fig. 2 is a perspective view showing a ventilation cap according to the present invention.
Figs. 3 to 4 are side sectional views showing the action of the ventilation cap of the present invention
Fig. 5 is a plan view showing the action of the support member in the structure of the ventilation cap of the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention; FIG. Therefore, it will be apparent to those skilled in the art that various modifications can be made within the scope of the technical idea of the present invention based on these embodiments.

In addition, the technical terms used in the present specification are terms selected in consideration of functions in the embodiments, and the meaning of the terms may vary according to specific embodiments of the invention. Therefore, the terms used in the following embodiments are defined according to their definitions when they are specifically defined in this specification, and unless otherwise defined, they should be construed in the meanings of technical terms generally recognized by ordinary technicians.

FIG. 1 is an exploded perspective view showing a ventilation cap according to the present invention, and FIG. 2 is a perspective view illustrating a ventilation cap according to the present invention.

The backflow prevention ventilation cap (1) according to the present invention comprises a main body (10) fastened to communicate with an exhaust duct (2) communicating with the inside of the cabinet, And a blocking cover 30 installed to block external wind or rainwater from flowing back to the front of the air outlet 20. The air outlet 20 and the blocking cover 30 And a filter member (40)

The main body 10 is formed with a fixing flange 11 to which a fixing and an exhaust port 20 are coupled to a wall and a tubular member having an inner side and an outer side penetrated to be fitted into an exhaust duct 2 at an inner end of the fixing flange 11. A coupling hole 12 is formed.

The coupling hole 12 is formed with a plurality of tension fixtures 13 for fitting the exhaust duct 2 therein.

The tension fixture 13 has a structure in which the upper and lower sides of the tension fixture 13 are cut in the outward direction and the upper side is bent outward in the direction of the coupling fitting. The fitting hole 12 is inserted into the exhaust duct 2 A restoring force is generated in the exhaust duct 2 by the tension fixture 13 so that the inner circumferential surface of the exhaust duct 2 is press-fitted and firmly supported and fixed.

The exhaust port 20 is formed with a coupling flange 21 to be coupled to the fixing flange 11 of the main body 10 and a discharge oil tool 22 are formed.

The discharge oil tool 22 is formed to have a downwardly sloping slope 22a that narrows in a direction of protruding to increase the discharge speed of the exhaust air stream while reducing the interference between the upper and lower wind pressure and the side wind pressure .

The blocking cover 30 is installed at a predetermined distance from the exhaust port 20 by the support member 50 and is formed in a shape of a circular arc that blocks the front wind while reducing the air resistance of the front wind pressure in the outward direction. And the air induction surface 32 protrudes in an arc shape so as to prevent the side wind from flowing back to the exhaust port while reducing the air resistance of the upper and lower wind pressure and side wind pressure in the inner direction, A vortex eliminating piece 33 for laterally dispersing the external wind radially from the edge of the guiding surface 32 is formed.

In the meantime, the upper and lower wind pressure and the side wind pressure refer to the external wind pressure blowing from above, below and from the side of the ventilating cap 1, and the wind pressure from the external side wind blows from the front of the ventilation cap 1 it means.

The supporting member 50 is installed between the vortex removing member 33 of the blocking cover 30 and the coupling flange 21 of the exhaust port 20 to support the blocking cover 30, And is formed in a cylindrical shape in order to improve the support strength while reducing the resistance.

The backflow preventing section 60 is formed to have a structure in which the arcuate discharge inducing surface 32 of the blocking cover 30 and the discharge oil tool 22 formed with the inclined surface 22a of the exhaust port 20 are narrowed toward the center, And a venturi effect that allows the air to flow quickly in the opposite direction introduced by the wind speed accelerated in the backflow prevention section 60, which is narrowed rather than flowing backward to the exhaust port 20 when the outside wind flows in accordance with the upper wind pressure and the side wind pressure That is, the principle is that the pressure is lowered while the flow velocity is lowered in the narrow passage).

Figs. 3 to 4 are side cross-sectional views illustrating the operation of the ventilating cap of the present invention.

The ventilating cap 1 according to the present invention having the above-described structure is constructed such that the ventilating cap 30 is spaced apart from the ventilating opening 20 through which the ventilating air is discharged, It is possible to remarkably reduce the interference caused by the front wind pressure, the upper and lower wind pressure and the side wind pressure, thereby effectively preventing the outside wind from flowing back to the exhaust outlet, and the exhaust performance according to the smooth exhaust of the exhaust air is further improved.

That is, if the front wind prevention ventilating cap 1 for a direct gas turbine according to the present invention is installed so as to protrude from the front end of the exhaust duct 2,

As shown in FIG. 3, the air dispersion surface 31 of the blocking cover 30 is radially introduced through the vortex removing piece 33 to be laterally dispersed,

Further, when interference occurs due to upper and lower wind pressure or side wind pressure,

The outer wind on the side surface of the blocking cover 30 rides on the inclined surface 22a of the discharge inducing surface 32 and the discharge oil tool 22 and the discharge inducing surface 32 and the discharge oil tool 22 The venturi effect is accelerated so that the wind speed is increased so as to be forcibly discharged in the opposite direction to the inflow direction. Thus, the reverse flow phenomenon caused by the upper wind pressure or the side wind pressure is prevented remarkably, The exhaust action is smoothly performed.

Here, the vortex removing member 33 has a function of preventing the generation of thrust by the vortex when dispersed on the air dispersion surface 31, and at the same time, inducing the radial side to be effectively dispersed .

5, a plurality of support members 50 formed in a cylindrical shape are provided between the vortex removing member 33 of the blocking cover 30 and the coupling flange 21 of the exhaust port 20, And the exhaust port 20 and the blocking cover 30 are supported in a state where the supporting strength is improved.

According to the improved structure for reducing the air resistance of the direct-blower ventilating cap 1 according to the present invention, it is possible to minimize the noise caused by the external wind pressure and to maximize the ventilation efficiency .

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that the scope of the claims is not limited to the examples but covers the scope of the claims and the scope of equivalents thereof.

1: Ventilation cap 2: Exhaust duct
10: main body 11: fixing flange 12: engaging hole 13: tension fixture
20: exhaust port 21: engagement flange 22: discharge oil tool 22a: inclined surface
30: blocking cover 31: air dispersing surface 32: exhaust guiding surface 33: vortex removing piece
40: filtration member 50: support member 60: backflow prevention section

Claims (4)

(10) connected to the exhaust duct (2) communicating with the indoor side, an exhaust port (20) coupled to an end of the main body (10) to exhaust the exhaust air flow, A ventilation cap comprising a blocking cover (30) installed to block external wind or rainwater from flowing backward and a filtering member (40) provided between the ventilation opening (20) and the blocking cover (30)
The blocking cover 30 is installed at a predetermined distance from the exhaust port 20 by a plurality of support members 50,
An arc-shaped air dispersion surface 31 for blocking the front wind is protruded while reducing the air resistance of the front wind pressure in the outward direction,
A discharge inducing surface 32 protrudes in an arc shape preventing the side wind from flowing back to the exhaust port while reducing the air resistance of the upper and lower wind pressure and side wind pressure in the inner direction,
And a vortex eliminator (33) for radially distributing the external wind laterally from the edges of the air dispersion surface (31) and the discharge induction surface (32).
The method according to claim 1,
The exhaust port (20) is formed with a drain oil tool (22) protruding so as to discharge the exhaust air flow through the coupling flange (21)
Wherein the discharge oil tool (22) is formed to have a downwardly inclined slope (22a) that narrows in a direction to protrude so as to reduce air resistance due to upper and lower wind pressure and lateral wind pressure.
The method of claim 2,
The inclined surface 22a of the discharge oil tool 22 and the discharge inducing surface 32 of the blocking cover 30 are guided to be narrowed toward the center so that the wind velocity is increased according to the structure, And a reverse flow preventing section (60) for quickly discharging the air in the reverse direction while preventing reverse flow of the backflow preventing cap (60).
The method according to claim 1,
Wherein the support member (50) is formed in a cylindrical shape so as to reduce air resistance.

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