JP3141032U - Duct integrated ventilation louver - Google Patents

Abstract

[PROBLEMS] To easily connect to a ventilation duct installed in a building and perform it economically, and to obtain high waterproof / snowproof performance and drainage performance while ensuring sufficient air permeability. Provided is a duct-integrated ventilation louver capable of opening a gallery portion 1 provided with a plurality of blades 1a to the lower end side of the outdoor surface of a substantially vertical cylindrical ventilation duct 2 that penetrates the outer wall of a building. It is fitted and fixed to the louver attachment port 2d. A through-hole 2c connected to the ventilation duct 3 in the building is provided on the inner surface of the upper chamber of the ventilation duct 2 at a position higher than the gallery portion 1, and the flange 2a and the flange 3a of the ventilation duct 3 are bolted to each other. To be able to connect.
[Selection] Figure 1

Description

  The present invention relates to a ventilation louver used to improve ventilation and prevent intrusion of rainwater by attaching it to an opening of a building or the like, and a fitting called a galley. It relates to body ventilation louvers.

  Conventionally, ventilation louvers that are attached to openings such as exhaust ports of buildings such as factories, power plants, gymnasiums, warehouses, buildings, houses, etc. basically have a plurality of blades in a horizontal or vertical direction with a predetermined frame. Are arranged in a grid pattern.

  By the way, for example, in an air conditioner such as a factory, when an opening connected to a ventilation duct is provided on the outer wall of a building and a gallery is attached to this opening, it is a different type of work inside and outside the building, so different contractors However, there is a problem that it is necessary to perform jointly or separately, which complicates the work and increases the cost of execution. That is, there is a problem that the person who attaches the louver to the wall surface is different from the person who connects the louver and the ventilation duct.

  Therefore, a ventilation duct formed by filling a sound absorbing material such as glass wool fiber is integrally provided on the extension of the ventilation path of the gallery (see Patent Document 1). The interior of the door body is hollow, and a reinforcing material that also serves as a separator is provided inside the door body. The reinforcing material is positioned at each end of the duct formed in the door body so that the door surface and the back surface of the door are positioned. A louver door in which a front louver and a back louver are provided for each (see Patent Document 2). A duct connection port that includes a duct-shaped wall penetrating member that penetrates the wall of the house and a box-shaped outdoor member that is attached to the outside of the house, and is connected to the wall penetrating member at the lower surface opening and the lower surface opening and on the rear surface. An air intake gallery for a house (see Patent Document 3). There has been proposed a structure in which a space is formed from one side of the panel body toward the inside of the panel body, and a gallery formed in the unit is stored in this space (see Patent Document 4).

Japanese Examined Patent Publication No. 6-52133 JP-A-8-28153 Utility Model Registration No. 3049383 JP 2006-291525 A

  However, the above-described conventional apparatus requires not only a separate member for connecting the louver and the ventilation duct, but also cannot be said to have a structure that can reliably prevent rainwater and snow from entering. The present invention makes it easy to connect to a ventilation duct installed in a building, which can be carried out economically, and obtains high waterproof / snowproof performance and drainage performance while ensuring sufficient ventilation. An object of the present invention is to provide a duct-integrated ventilation louver.

  Therefore, the duct-integrated ventilation louver of the present invention has a louvered portion on the outdoor surface of a substantially vertical cylindrical ventilation duct that penetrates the outer wall of the building, and is placed on the indoor surface above the louvered portion in the building. The first feature is that a connection port with the installed ventilation duct is provided. In addition, a second feature is that a curved plate is disposed at the internal corner of the ventilation duct. Furthermore, a third feature is that a water return portion is provided on the rising surface of the ventilation duct.

The present invention has the following excellent effects.
(1) It is not necessary for different construction contractors to perform jointly or separately, and since a member for connecting the gallery and the indoor ventilation duct is not required, the work is complicated and the execution cost can be reduced.
(2) Since the louver is arranged on the outer lower surface of the wind tunnel and the connection port with the ventilation duct is provided on the inner upper surface above the louver, the intrusion of rainwater and snow can be surely prevented.
(3) Since the curved plate is disposed at the internal corners of the ventilation duct, the pressure loss of the circulating air can be reduced and high air permeability can be ensured.
(4) By providing the water return portion on the rising surface of the ventilation duct, high waterproof / snowproof performance and drainage function can be obtained.

  Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings. FIG. 1 shows an embodiment of a duct-integrated ventilation louver according to the present invention. FIG. 1A is a front view, FIG. 2B is a side view, and FIG. 3 is a front view showing the waterproof test apparatus, FIG. 4 is a partially sectional side view showing the waterproof test apparatus, FIGS. 5 and 6 show the specifications of the galley used in the test, FIG. ) Is a cross-sectional view.

  In FIG. 1 to FIG. 3, reference numeral 1 denotes a gallery portion in which a plurality of blades 1 a are arranged, and a louver attachment port that is opened on the lower end side of the outdoor surface of the substantially vertical cylindrical ventilation duct 2 that penetrates the outer wall of the building. It is fitted and fixed to 2b. A through-hole 2c connected to the ventilation duct 3 in the building is provided on the inner surface of the upper chamber of the ventilation duct 2 at a position higher than the gallery portion 1, and the flange 2a and the flange 3a of the ventilation duct 3 The bolts are fastened so that they can be connected.

  In addition, a first curved plate 4 that is recessed inward is attached to the lower corner of the inside of the ventilation duct 2, and a second curved plate 5 that is recessed inward is also attached to the upper corner. The pressure loss of the air flowing through the ventilation duct 2 can be reduced. Further, the rising surface 2d of the ventilation duct 2 is provided with a water return portion comprising a first refracting strip plate 6a and a second bent strip plate 6b and a water return plate 6 that are bent downward at an acute angle. The rainwater and snow that has entered through the gallery 1 can be captured and flowed down.

Water flashing plate 6 is arranged with a rising surface 2d slight gap D _1, the gap D ₁ is rain water or snow trapped by the first refracting strip 6a provided above the water flashing plate 6 A flow path that flows down is formed.

  As shown in FIGS. 3 to 6, the louver 1 includes an outdoor surface 14 in which a plurality of horizontal blade plates 1 a, 1 a, and the like are integrally connected to a fixed frame 12 made of aluminum sash, and an inner surface 15. Usually, it is set as the structure attached to the opening part of a building with the fixed frame 12 in the state which this indoor surface 15 faces indoors. Furthermore, a net (net) 1b is stretched on the indoor surface side of the louver 1. The mesh degree of the net 1b is about 60 mesh and snow is captured, but it is preferable to use a mesh size that allows smooth ventilation. Thus, more reliable snowproof performance can be obtained by the net 1b covering the entire surface of the louver 1.

  The blades 1a, 1a, ... are made of an aluminum plate material, and an inclined surface 13 inclined downward is formed. A flat plate is suspended from the lower end of the inclined surface 13, and has a substantially square shape. In the present embodiment, the inclined surface 13 is formed linearly, but it may be curved downward. Further, since the blades 1a, 1a,... Are arranged at regular intervals in the vertical direction, a plurality of horizontally elongated holes (ventilation passages) 11, 11,.

  That is, the blades 1a, 1a,... Configured as described above are arranged in parallel to each other and fixed in the frame body 12. At this time, the blades 1a, 1a,... Are arranged side by side so that the upper and lower ends thereof are overlapped with each other and the gap (ventilation passage) 11 is formed.

  Further, the lowermost slat 1a is provided with a skirt portion 1c extending forward, so that rainwater is not blown into the interior. As described above, the skirt portion 1c covering the front surface of the lower end portion of the louver 1 can provide reliable waterproofing and snowproofing performance against rainwater and snow rolling up from below.

[Test example]
A waterproof test of the ventilation louver according to the present invention was performed using the test apparatus shown in FIGS. The results are shown in Table 1.
The test apparatus places a waterproof test wind tunnel 7 having a window 7a opened on the front surface on a frame 8 and fastens and fixes the wind tunnel 7 with fixing bolts 10. It was fixed in an airtight state and communicated.
The dimensions of the test apparatus are as follows. In addition, as a louver part, the 1 sheet | seat louver shown in FIG.3 and FIG.4 and the 2 sheet | seat louver shown in FIG.5 and FIG.6 were used.
Wind tunnel width: W ₂ = 1800mm
Wind tunnel height: H ₁ = 2170 mm
Depth of wind tunnel: L ₄ = 3600
Opening width: W ₁ = 500 mm
Distance from the opening to the exhaust port: L ₁ = 1000 mm
Vertical dimension of opening: L ₂ = 500 mm
Vertical dimension of exhaust port: L ₃ = 510 mm
Height from the gantry to the center of the exhaust port: H ₂ = 1160mm

Water: 4 liters / minute × 10 minutes = 40 liters sprayed at wind velocity 10m / s~34 / s, the floor plan dimensions _{D 2} of the duct is varied in 100mm and 300 mm, it was subjected to waterproof test. The results are shown in Table 1.

  As is clear from Table 1, the duct-integrated ventilation louver according to the present invention exhibited a substantially reliable waterproof effect under each condition.

(A) which shows one Example of the duct integrated ventilation louver which concerns on this invention is a front view, (b) is a side view. It is principal part side surface sectional drawing of the duct integrated ventilation louver which concerns on this invention. It is a front view which shows the specification of the louver used in the waterproof test. It is a principal part expanded sectional view of FIG. It is a front view which shows the specification of the louver used in the prevention test. It is a principal part expanded sectional view of FIG. It is a front view which shows a waterproof test apparatus. It is a partial cross section side view which shows a waterproof test apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Garage part 1a Blade board 1b Insect net 1c Skirt part 2 Duct part 2a Flange 2b Gully attachment port 2c Through-hole 2d Rise surface 3 Ventilation duct connection port 3 Ventilation duct 4 First curved plate 5 Second curved plate 6 Water return plate 6a 1st refractory strip 6b 2nd refractory strip 7 Wind tunnel 7a for waterproof test Window 8 Stand 9 Packing 10 Fixing bolt 11 Gap between slats (ventilation passage)
12 Fixed frame 13 Inclined surface 14 of slat 14 Outdoor surface 15 of gallery part Indoor surface of gallery part

Claims (3)

A louvered part is arranged on the outdoor surface of a substantially vertical cylindrical ventilation duct that penetrates the outer wall of the building, and a connection port with a ventilation duct installed in the building is provided on the indoor surface above the louvered part. This is a duct-integrated ventilation louver. 2. The duct-integrated ventilation louver according to claim 1, wherein a curved plate is disposed at an inner corner of the ventilation duct. The duct-integrated ventilation louver according to claim 1 or 2, wherein a water return portion is provided on a rising surface of the ventilation duct.

Images