JP2001248868A - External wind resistant exhaust port - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an external wind-resistant exhaust port capable of securing a sufficient exhaust volume without being affected by high static pressure and without protruding greatly from an outer wall. SOLUTION: The external wind-resistant exhaust port 24 has an inner hood 26.
And an outer hood 28. Rear surface 2 of inner member 26
A first air passage 32 that allows exhaust air from the exhaust opening 22 to flow out along the outer wall 12 is formed between the outer wall 12 and the wall surface 602. Inner surface 280 of outer hood 28
Between the outside hood 28 and the front surface 2604 of the inside hood 26,
A second air passage 34 is formed to flow along the inner surface 2802 of the inner hood 26 and the front surface 2604 of the inner hood 26. The third is to allow the exhaust gas flowing through the first air passage 32 and the outside air flowing through the second air passage 34 to merge between the inner surface 2802 at the rear portion of the outer hood 28 and the wall surface 1202 and flow out along the wall surface 1202 of the outer wall 12. Air passage 38 is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external wind-resistant exhaust port particularly suitable for an exhaust opening of an outer wall of a high-rise building.

[0002]

2. Description of the Related Art An exhaust opening is provided on the outer wall of a building, and air circulated indoors by an air conditioner or the like is discharged from the exhaust opening to the outside of the building. By the way, when a strong wind blows into the exhaust opening from the front, the exhaust to be discharged to the outside is pushed back to the back of the exhaust opening,
The displacement is significantly reduced. This problem is particularly pronounced in high-rise building exhaust openings subject to strong building winds. Conventionally, in order to solve such a problem, an external wind-resistant exhaust port has been provided.

FIGS. 3A and 3B are cross-sectional side views of a conventional external wind-resistant exhaust port. FIG.
1A and 1B, reference numeral 12 denotes an outer wall, and reference numeral 14 denotes an exhaust duct. A sleeve 16 is fitted into the outer wall 12, one end of the sleeve 16 is connected to the exhaust duct 14, and the other end of the sleeve 16 is connected to the outer duct 12. An exhaust opening 18 is provided. 3A, a disk-shaped hood 52 having a diameter larger than that of the exhaust opening 18 is provided in front of the exhaust opening 18 via a stay or the like. Is arranged so as to be parallel to the wall surface 1202. In addition, in the external wind-resistant exhaust port shown in FIG.
A curved hood 54 is attached to the outer wall 12 so as to cover the front of the exhaust opening 18 so as to be positioned gradually downward as it reaches the front of the exhaust opening 18.

[0004]

According to such an external wind resistant exhaust port, the hoods 52 and 54 can effectively block the dynamic pressure of the external wind blown from the front of the exhaust opening 18. . However, the dynamic pressure of the external wind blown to the outer wall 12 around the exhaust opening 18 is converted to a static pressure near the outer wall 12, and the static pressure near the outer wall 12 is high. Therefore, the exhaust port of the external wind resistant type can block the dynamic pressure of the external wind, but has a problem that a sufficient exhaust volume cannot be secured due to the influence of the high static pressure near the outer wall 12. In order to solve this problem with the conventional external wind resistant exhaust port, a method of protruding the hood to an area not affected by high static pressure (a place far away from the outer wall) can be considered, but it is not preferable in design. The present invention has been devised in view of the above circumstances, and an object of the present invention is to ensure a sufficient displacement without being affected by a high static pressure and without protruding greatly from an outer wall. An object of the present invention is to provide an external wind-resistant exhaust port.

[0005]

In order to achieve the above object, the present invention is directed to an external wind resistant exhaust port attached to an exhaust opening formed in an outer wall of a building, comprising: a first air passage; A second air passage, a third air passage, an outside air intake provided on an upstream side of the second air passage, and an outlet provided on a downstream side of the third air passage. ing. The first air passage is formed so as to communicate with the exhaust opening and change the direction of exhaust blown out from the exhaust opening to flow out along the outer wall. The second air passage is formed so that the outside air taken in from the outside air intake port flows out of the exhaust air flowing downstream of the first air passage in a direction that does not flow into the exhaust opening. The third air passage communicates with the downstream side of the first air passage and the downstream side of the second air passage, and joins the exhaust flowing through the first air passage and the outside air flowing through the second air passage. It is configured to be discharged from the outlet along the outer wall. Further, the external wind-resistant exhaust port of the present invention includes an inner hood and an outer hood. The outer hood has an inner surface located on the inner side and an outer surface located on the outer side, and is formed in a hollow shape with open front and rear ends. The inner hood is arranged inside the outer hood, with its front face facing the open front end of the outer hood and its rear face facing the exhaust opening. A rear surface of the inner hood is configured such that a first air passage through which exhaust air blown out from the exhaust opening flows out along the outer wall is formed. A second air passage is formed between the inner surface of the outer hood and the front surface of the inner hood to allow outside air taken from an open portion at the front end of the outer hood to flow out along the inner surface of the outer hood and the front surface of the inner hood. It is configured to be. Further, a third air passage is formed on the inner surface of the rear portion of the outer hood, where the exhaust gas flowing through the first air passage and the outside air flowing through the second air passage are combined and flow out from the rear end of the outer hood along the outer wall. It is configured to:

In the present invention, the indoor exhaust discharged from the exhaust opening reaches the third air passage from the first air passage. On the other hand, the outside air blown into the outside hood is
From the air passage to the third air passage. Then, in the third air passage, the outside air flowing through the first air passage is attracted by the outside air flowing through the second air passage, so that the outside air and the exhaust air merge, thereby increasing the speed of the exhaust air. It is discharged to the outside of the external wind resistant exhaust port.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a sectional front view of an external wind-resistant exhaust port according to the embodiment, and FIG. 2 is a perspective view of the same.
A sleeve 20 is fitted into the outer wall 12, and this sleeve 2
0 is connected to the exhaust duct 14, the other end of the sleeve 20 is an exhaust opening 22, and the external wind resistant exhaust port 24 according to the present embodiment is attached to the exhaust opening 22. .

The external wind-resistant exhaust port 24 has an inner hood 26 and an outer hood 28. The inner hood 2
6 is disposed facing the exhaust opening 22 at a location away from the wall surface 1202 of the outer wall 12, and the outer hood 28 is disposed outside the inner hood 26 opposite to the exhaust opening 22. . The inner hood 26 has a rear surface 2602 disposed facing the exhaust opening 22 and a front surface 2604 facing the direction opposite to the exhaust opening 22. The inner hood 26 is formed in the shape of a disk having a diameter larger than the inner diameter of the exhaust opening 22, and includes the rear surface 2602 and the front surface 2.
Reference numeral 604 denotes a circular shape when viewed in a plan view, and is disposed such that the center of the inner hood 26 coincides with the axis of the exhaust opening 22.

The rear surface 2602 hits exhaust gas discharged from the exhaust opening 22 through the exhaust duct 14, and the central portion of the rear surface 2602 discharges the exhaust gas in a radial direction centered on the exhaust opening 22. The opening 22 has a convex shape, and the periphery thereof is formed in a concave shape. The front surface 2604 is formed as a curved surface (or a spherical surface) whose center portion is convex in a direction away from the exhaust opening 22.

The outer hood 28 is formed in a hollow substantially frusto-conical shape, and the outer hood 28 has an inner surface 2802 facing the front surface 2604 of the inner hood 26 and an outer surface 2804 facing the direction opposite to the inner hood 26. Have. And the outer hood 28 in which the diameter of the outer hood 28 is reduced
A circular outside air intake 2806 is formed at the center of the front end of the outer hood 28, and the outer hood 28 is increased in diameter.
Inside the rear end 2807, a circular rear end opening 2808 is formed. The inner surface 2802 of the outer hood 28 is formed with a curved surface that is convex between the front end and the rear end of the outer hood 28. And the inner surface 280
2 is positioned outside the inner hood 26 so as to face the front surface 2604 of the inner hood 26 (or the inner hood 26 is positioned inside the outer hood 28), and the axis of the outer hood 28 and the inner hood 26 And the rear end 2807 of the outer hood 28 is
It is arranged so as to face the wall surface 1202 with an interval between the first and second walls 202.

By arranging the inner member 26 and the outer member 28 in this manner, the outside air intake 2806 and the exhaust opening 22 are coaxially located, and the outside air intake 28
06, the front surface 2604 of the inner hood 26 is located, and the first air passage 3
2, a second air passage 34, and a third air passage 38 are formed. That is, the rear surface 2 of the inner member 26
A first air passage 32 for discharging exhaust gas discharged from the exhaust opening 22 along the wall surface 1202 of the outer wall 12 in a radial direction centered on the exhaust opening 22 between the 602 and the wall surface 1202 of the outer wall 12. Is formed. The first air passage 32 is set so that the cross-sectional area formed between the first air passage 32 and the wall surface 1202 is larger than the cross-sectional area of the exhaust opening 22. An outside air intake 2806 is provided between the inner surface 2802 of the outer hood 28 and the front surface 2604 of the inner hood 26.
Outside air taken in from the front 2604 of the inner hood 26
The inner surface 28 of the outer hood 28 in a radial direction centered on the center
A second air passage 34 is formed to flow out along the front side 2 02 and the front surface 2604 of the inner hood 26. Since the inner surface 2802 of the outer hood 28 is formed as a curved surface that is convex inward between the front end and the rear end of the outer hood 28, the inner surface 2802 is formed in the second air passage 34. Is
A narrowed portion 36 having a reduced cross-sectional area and increasing the flow rate of the outside air flowing through the second air passage 34 is formed.

Also, at the rear of the inner hood 26, that is, at the rear of the outer hood 28 away from the outside air intake 2806, the first air passage 32 flows between the inner surface 2802 and the wall surface 1202 of the outer hood 28. The exhaust air and the outside air flowing through the second air passage 34 are merged, and the wall surface 120 of the outer wall 12 is radially centered on the exhaust opening 22.
A third air passage 38 is formed to flow out along 2
The rear end 2807 of the outer hood 28 and the wall surface 120 of the outer wall 12
An annular space between the second air passage and the second air passage serves as an outlet 38A of the third air passage. The inner hood 26 and the outer hood 2
As a material constituting 8, a synthetic resin material or a metal material can be used, and the inner hood 26 and the outer hood 28 are attached to the outer wall 12, the sleeve 20, and the like via a stay or the like. Made in. In the present embodiment, the inner hood 26 and the outer hood 28 are both made of synthetic resin, and the inner hood 26 and the outer hood 28 are connected by a plurality of rod-shaped stays 50 spaced apart in the circumferential direction. 26 and the outer hood 28 are integrally formed. Further, a plurality of locations of the outer hood 28 radially outward of the inner hood 26 and the outer wall 12 are connected by a screw member 54 that penetrates the cylindrical member 52. It is screwed into the female screw of the anchor member 56 embedded in the base 12.

Next, the operation of the external wind resistant exhaust port 24 will be described. The indoor exhaust air exhausted from the exhaust opening 22 through the exhaust duct 14 is supplied to the rear surface 260 of the inner hood 26.
2 and radially branches about the center of the outer surface 2602, and the cross-sectional area of the first air passage 32 is
Since the cross-sectional area is larger than the cross-sectional area of 2, the exhaust velocity is attenuated and flows through the first air passage 32 to reach the third air passage 38. On the other hand, the outside hood 28
Outside air blown into the inside of the inside hood 26
04, radially branches around the center of the front surface 2604, flows through the second air passage 34, and the flow velocity is increased by the throttle portion 36, and then reaches the third air passage 38, where the outer wall It flows along 12 wall surfaces 1202. Then, in the third air passage 38, the outside air whose flow velocity has been increased in the second air passage 36 induces the exhaust gas whose flow velocity in the first air passage 32 is attenuated, and the outside air and the exhaust gas join together.
As a result, the exhaust speed is increased, and the external wind-resistant exhaust port 2 is extended from the outlet 38A along the wall surface 1202 of the outer wall 12.
4 to the outside.

Therefore, according to the external wind resistant exhaust port 24, the external wind blown to the outer wall 12 hits the front surface 2604 of the inner hood 26 located in front of the exhaust opening 22. The problem that the dynamic pressure of the outside wind blown from the front is blocked and the outside air blows into the exhaust opening 22 to reduce the exhaust amount can be solved. In addition, outer wall 1
Even if the outer wall 12 near the anti-external type exhaust port 24 has a high static pressure due to the external wind blown to the second air passage 2, the third air passage 38 moves from the second air passage 34 to the third air passage. Attracting action of the outside air that has flowed into 38 works and joins with the outside air to increase the dynamic pressure (increase the speed).
Exhaust gas is stably discharged by overcoming the high static pressure, and a sufficient amount of exhaust gas can be secured without the inner hood 26 and the outer hood 28 protruding significantly from the outer wall 12. In the present embodiment, since the throttle portion 36 is provided in the second air passage 34, the speed of the outside air flowing through the second air passage 34 is further increased, and the attraction of the outside air is further enhanced. This is more advantageous in increasing the dynamic pressure in the air passage 38 and overcoming the high static pressure to stably discharge the exhaust gas.

Further, since the outer surface 2804 of the outer hood 28 is formed as a substantially conical surface, external air blown to the exhaust opening 22 and 12 places of the outer wall around the exhaust opening 22 is allowed to flow to the vicinity of the outlet 38A to reduce static pressure in a high state. It is weaker, which is more advantageous in discharging exhaust gas. Further, the exhaust gas discharged from the exhaust opening 22 hits the rear surface 2602 of the inner hood 26 and flows through the first air passage 32 having a larger cross-sectional area than the exhaust opening 22, so that the exhaust gas exits the exhaust opening 22. Exhaust gas is decelerated, and therefore, even when the speed of the outside air is low, it is possible to stably discharge the outside air by the attraction of the outside air whose speed has been increased in the second air passage 34.

Although the embodiment has been described with reference to the case where the inner hood 26 is formed in a substantially disk shape and the outer hood 28 is formed in a hollow substantially frustoconical shape, the inner hood 26 and the outer hood 28 are formed. Is arbitrary and is appropriately determined according to the design of the appearance. Also, the exhaust opening 2
The exhaust air blown out from the exhaust pipe 2 may be arbitrarily set in such a manner as to blow the exhaust air blown out from the exhaust opening 22 in the left and right two directions or only downward. The shape of the outer hood 28 is appropriately determined.

[0017]

As is apparent from the above description, according to the external wind resistant exhaust port of the present invention, a sufficient exhaust volume can be secured without being affected by high static pressure and without protruding greatly from the outer wall. It can be applied to a high-rise building with a strong building style, and is particularly suitable.

[Brief description of the drawings]

FIG. 1 is a cross-sectional front view of an external wind-resistant exhaust port according to an embodiment.

FIG. 2 is a perspective view of an external wind-resistant exhaust port according to the embodiment.

FIGS. 3A and 3B are cross-sectional side views of a conventional external wind-resistant exhaust port, respectively.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Outer wall 22 Exhaust opening 24 External wind-resistant exhaust port 26 Inner member 28 Outer member 2806 Outside air intake 32 First air passage 34 Second air passage 38 Third air passage 38A outlet

Claims (7)

[Claims] 1. An external wind-resistant exhaust port attached to an exhaust opening formed in an outer wall of a building, comprising: a first air passage, a second air passage, a third air passage, An external air intake provided on the upstream side of the second air passage; and a blowout provided on a downstream side of the third air passage. The first air passage is provided at the exhaust opening. The second air passage is formed so as to change the direction of exhaust air blown out from the communication exhaust opening and to cause the exhaust air to flow out along the outer wall, and the second air passage is a direction in which external air taken in from the external air intake does not flow into the exhaust opening. In the first
The third air passage communicates with a downstream side of the first air passage and a downstream side of the second air passage. An external wind-resistant exhaust port, wherein the exhaust air flowing through the passage and the outside air flowing through the second air passage are merged and discharged from the outlet along the outer wall. 2. An external wind-resistant exhaust port attached to an exhaust opening formed in an outer wall of a building, comprising an inner hood and an outer hood, wherein the outer hood is located on an inner surface located on the inner side and located on an outer side. The inner hood is formed in a hollow shape with the front end and the rear end opened, and the inner hood faces the open portion of the front end of the outer hood, and the rear surface is exhausted. A rear surface of the inner hood is formed such that a first air passage through which exhaust air blown out from the exhaust opening flows out along an outer wall is formed; Between the inner surface of the outer hood and the front surface of the inner hood, a second air passage is formed to allow outside air taken in from an open portion at the front end of the outer hood to flow out along the inner surface of the outer hood and the front surface of the inner hood. Is configured to Further, a third air passage is formed on the inner surface of the rear portion of the outer hood, where the exhaust gas flowing through the first air passage and the outside air flowing through the second air passage are combined and flow out from the rear end of the outer hood along the outer wall. An external wind-resistant exhaust port, wherein the exhaust port is configured to be configured as follows. 3. The external wind-resistant type according to claim 1, wherein a throttle portion is provided in the second air passage so as to increase the flow rate of the outside air flowing through the second air passage. exhaust port. 4. The external wind resistant exhaust port according to claim 1, wherein the first air passage is formed with a cross section larger than a cross section of the exhaust opening. 5. The outer hood is formed in a hollow substantially frustoconical shape, the inner hood is formed in a substantially disk shape,
3. The external wind-resistant exhaust port according to claim 2, wherein the outer hood and the inner hood are disposed so that their axes are aligned. 6. The external wind-resistant exhaust port according to claim 5, wherein the inner hood has a diameter larger than the exhaust opening. 7. A front surface of the inner hood is formed with a curved surface protruding forward at a central portion, and a rear surface of the inner hood is formed with a concave curved surface protruding rearward at a central portion at the center portion. The external wind resistant exhaust port according to claim 6, characterized in that: