JPS59126841A - Air intake port of house - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to an air intake in a building.

Nuclear power plants - secondary buildings require continuous ventilation of large amounts of air at all times. The air intake of the said building is.

A louver (b) is placed on the air intake surface located on the roof of the building (a).
), and the same looper is used to prevent rain and snow from entering, but in bad winter weather conditions, snow may adhere to the loop/e section, or the internal duct) (
This may cause problems such as being piled up near the damper Cd) in c), causing inconvenience in terms of operation management.

In order to eliminate such drawbacks, methods have generally been proposed to reduce the suction wind speed at the suction surface, but in the case of the air supply system of the secondary building of a nuclear power plant.

Since the processing air volume is extremely large, the outside air intake structure becomes large, which is undesirable.

The present invention was proposed in order to eliminate such problems, and the floor part of the air suction opening is formed in two stages, and the roof facing the raised floor is extended from the tip of the thin part. An air suction port is formed between the lower end of the installed hanging wall and the low floor surface, and a protruding portion that extends toward the low floor surface is provided at the end of the raised floor surface. This relates to the characteristic air intake of the building.

Since the present invention is configured as described above.

Most of the snow that attempts to enter the air suction opening is blocked by the hanging wall that hangs down from the thin section. The remaining snow tries to enter by bending its path through the air suction port formed between the lower end of the hanging wall and the low floor surface, and due to the centrifugal force generated at this time, some of the snow directly enters the air suction port. It stays near the intake port without entering and is dissipated by the wind. The snow that enters through the suction port enters the bent passage formed between the roof, the hanging wall, and the high floor part and the low floor part of the air suction opening along with the wind, and when passing through the bent passage. A vortex is created, and most of the snow is brushed off to the low-lying surfaces, preventing it from entering. Furthermore, the effect of preventing the snow from entering is further promoted by the protrusion extending from the end of the raised floor surface.

As described above, according to the present invention, snow can be sufficiently prevented from being sucked in with a simple and small air intake, and an air intake with a small pressure loss coefficient can be provided. It is applied to outside air intakes of system building air supply systems, and various other types of building ventilation systems.

The present invention will be described below with reference to the illustrated embodiments.

In Figure 2, (1) is the reference suction surface of the air suction opening of the building, the floor of the circulation section is formed in two stages, and from the end of the raised floor surface (2), there is a low floor surface that forms the roof of the building. (3) A protrusion (4) is provided that extends upward.

A thinner part (6) than the roof (5) facing the raised floor surface (2)
is extended, and a hanging wall (7) is provided hanging from the tip of the thin part (6).

An air suction port (8) is formed between the lower end of the hanging wall (7) and the low floor surface (3).

Therefore, most of the snow that tries to enter the air intake of the building is blocked by the hanging wall (7), and the remaining snow tries to enter the interior through the air intake (8) by curving its direction.
The result is that the centrifugal force generated at this time stagnates in the suction q (8) and is dissipated by the wind.

The amount of snow that enters through the air suction port (8) is significantly reduced. Furthermore, the remaining snow that entered through the suction port (8) is transferred to the high and low floor surface f2) (3), the waist wall (9) formed between the two floor surfaces, the thin part (6), and the hanging wall (by force). The amount of snow reaching the suction surface, which is deflected by the refractive passage formed and blocked by the protrusion (4), is significantly reduced compared to the conventional louver type. Snow suction prevention performance is improved.

Further, according to the illustrated embodiment, the suction wind speed at the reference suction surface can be increased, so that the increase in the overall size of the structure compared to the conventional type can be suppressed to a minimum.

FIGS. 3 and 4 respectively show the dimensional ratio of each structural part suitable for exhibiting the excellent snow suction prevention function in the above embodiment.

FIGS. 5 and 6 show another embodiment of the present invention, with a hanging wall (2" (1G) placed in front of the force).

At the intermediate position between the same Fu)'FIG and the hanging wall (force),
This is an attempt to further improve the snow suction prevention function by installing a screen (lυ) on the low floor surface (3), and the dimensional ratio of each structural part suitable for achieving the same function is also shown. te~)ru.

In the figure, parts equivalent to those of the above embodiment are given the same reference numerals.

Although the present invention has been described above with reference to embodiments, the present invention is of course not limited to such embodiments, and various design modifications may be made without departing from the spirit of the present invention. It is something.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the air intake of a conventional building. FIG. 2 is a longitudinal sectional view showing an embodiment of the air intake of a building according to the present invention, FIGS. 6 and 4 are longitudinal sectional views showing the dimensional ratio of each structural part thereof, and FIGS. FIG. 6 is a longitudinal sectional view showing the dimensional ratio of each structural part of another embodiment of the present invention. (1)...Reference suction surface, (2)...Elevated floor surface. (3)...Low floor surface, (4)...Protrusion. (5)... Roof, (6)... Bottom. (7)... Hanging wall, (8)... Air intake port. Sub-Agent Patent Attorney Shige Okamoto Two other persons: 1-1 Wadazakicho-chome, Hyogo-ku, Kobe City, Mitsubishi Heavy Industries, Ltd., Kobe Shipyard & Machinery Works Applicant: Senzai Electric Power Co., Ltd., 3-3 Nakanoshima, Kita-ku, Osaka City No. 22 - ■Applicant: 2-5 Marunouchi, Takamatsu City, Shikoku Electric Power Co., Inc.■Applicant: 2-1 Watanabe-dori, Chuo-ku, Fukuoka City, Kyushu Electric Power Co., Ltd.No. 6-1 ILr, Otemachi, Chiyoda-ku, Tokyo■ Requester: Mitsubishi Heavy Industries, Ltd. 2-5-1 Marunouchi, Chiyoda-ku, Tokyo

Claims (1)

[Claims] The floor part of the air suction opening is formed in two stages, and the air suction opening is formed between the lower end of the hanging wall hanging from the tip of the thin part formed by extending the roof facing the high floor surface and the low floor surface. an air intake port for a building, characterized in that the raised floor surface has a protruding portion extending toward the lower floor surface at an end thereof.