JPH02309145A - Ventilation facility of building - Google Patents

Abstract

PURPOSE:To improve a workability of a maintenance work and further improve a light taking characteristic by a method wherein an air blowing port for use in blowing air at a state forming a helical circulating and ascending air stream around an axis including a center of an opening as well as its peripheral part of the opening and its blowing port is provided with a forced aeration means for use in supplying air. CONSTITUTION:Air blowing ducts 5 are fixed around an opening 4 and to hexagonal annular arranged opening iron frames 1B as viewed from their top plan view while they are faced to each other and communicated with an interior of the opening iron structure 1B. A plurality of air blowing ports 6 for use in blowing air toward a longitudinal direction of the blowing duct 5 and a slant upward direction are arranged in a longitudinal direction in side-by-side relation. An air blower 8 is arranged within a machine room 7 with a forced aeration means for forming a circulating ascending air stream through an air blowing from the air blowing port 6. Its air blowing port is connected to an interior part of the iron frame 1A of the frame 1 and the air is guided to the blowing port 6 with the iron frame 1A of the frame 1 being applied as a duct. With such an arrangement, it is possible to improve a workability of a maintanance work and a light taking operation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a ventilation system that is useful mainly for buildings that form large spaces, such as gymnasiums and factory equipment buildings. related to ventilation equipment for buildings.

[Conventional technology]

The following types of ventilation equipment are known:

One of them, as shown in Figs. 5 and 6, is an overhanging roof (10) whose roof is composed of swingable skylight panels (9).
is attached to the roof (3) so as to cover the opening (4), and the ventilation fan (10) for forced exhaust air to the outside is provided with a damper (11) and a hood (12) that can be freely opened and closed.
13), natural ventilation is performed by opening the skylight plate (9), and forced ventilation is performed by operating the ventilation fan (13). In addition, there is also a skylight board (9) that is a glass-inserted board to allow for daylight when the building is closed.

The other type is a roof ventilator with an exhaust fan installed on the roof.

[Problem to be solved by the invention]

However, when using any of the above-mentioned conventional techniques, movable parts such as the drive parts of ventilation fans and exhaust fans and skylight panels are located on the roof, so maintenance workability for them is poor.Moreover, when using the former, Even if the skylight board was a glass inset board, the side panels of the overhang roof rose around the opening, so it was not possible to get enough light.On the other hand, when using the latter, the opening was blocked by a roof ventilator. Because of the opening, there was little hope of sunlight coming through the opening.

An object of the present invention is to provide ventilation equipment for a building that is excellent in maintenance workability and lighting.

[Means to solve the problem]

A characteristic configuration of the ventilation equipment for a building according to the present invention is that an air outlet is arranged around the opening to blow out air in a state that forms a swirling upward air current around an axis including at or near the center of the opening, The point is that forced ventilation means is formed for supplying air to the outlet.

The roof includes a pipe framework, and the forced ventilation means includes:
Preferably, the air blower is a means for guiding air blown by an air blower to the air outlet through the pipe frame.

[For production]

The swirling updraft created by blowing air out of the air outlet can generate a force corresponding to the strength of the swirling updraft that draws the air in the space below the roof to the outside through the opening. By adjusting the air blowing force from the air outlet, desired forced ventilation can be performed.

Furthermore, (A) the swirling updraft acts on the opening as an air curtain that sends it to the outer periphery by centrifugal force, so by adjusting the strength of the swirling updraft according to the amount of rain or snowfall, Even without installing shutters to open and close the openings, which can obstruct ventilation and light coming in through the openings, the air curtain allows rain and snow to pass through the openings without being repelled by centrifugal force to the outer periphery of the openings. Prevents rain and snow from entering. And (B) The blowing of air from the outlet generates an induced exhaust force from the opening and also forms a swirling upward airflow to form an air curtain. Since the forced air blowing means can be composed of air blowing equipment and a duct that guides the air blown from the air to the outlet, there is no need to provide air blowing equipment near the opening, which can obstruct sunlight from entering the opening.

As a result of (A) and (B), it is possible to smoothly perform natural ventilation due to the chimney effect even when the air blowing from the air outlet is stopped, and the lighting performance through the opening can be maximized. There is no need to install any driving or moving parts such as ventilation equipment in the surrounding area.

In particular, if the pipe framework of the roof is used as a ventilation duct, the duct structure can be simplified and costs can be reduced, and the framework can be cooled by ventilation inside the framework pipe. Fireproof performance of the frame can be ensured.

〔Effect of the invention〕

As a result of the above, according to the present invention, it is possible to provide a ventilation system for a building that is excellent in maintenance workability and lighting efficiency, and can be implemented at a simple structure and at low cost, especially if it is configured as described in claim 2. □ [Example] Next, an example of the present invention will be shown.

First, we will explain the building targeted by this example: As shown in Fig. 1, the building is a dome-shaped building that forms a large space, and is composed of a steel frame (IA) constructed in a truss shape. It is constructed by attaching a glass exterior material (2) to (1). The steel frame (IA) of the frame (1) has a square pipe shape as shown in FIG.

The ventilation equipment for the building includes an airflow forming means for forming an opening (4) at the top of the roof (3) of the building, and forming a swirling upward airflow around an axis including the center of the opening (4), and a forced airflow. It is constructed by providing ventilation means.

The opening (4) is hexagonal in plan view, as shown in FIG.

The airflow forming means includes an opening (4) as shown in FIG.
Steel frames surrounding the opening are arranged in a hexagonal ring shape in plan view (
A blowout duct (5) is attached to each of the blowout ducts (IB) so as to communicate with each other and within the steel frame around the opening (IB), and the blowout duct (5) is installed in a direction that extends in the longitudinal direction of the blowout duct (5) and diagonally upward. Multiple outlets for blowing air in the direction (
6) are formed side by side in the longitudinal direction, and form the swirling upward airflow by blowing the air from the air outlet (6).

The forced ventilation means includes a blower (8) arranged in a machine room (7) arranged at intervals in the circumferential direction in the lower part of the building, and an air outlet of the blower (8) connected to the steel frame (IA) of the frame (1). ), the steel frames (IA) of the frame (1) are connected to each other, and the air blown by the blower (8) is passed through the frame (1).
In other words, it is a means for guiding the steel frame (IA) of the frame (1) to the air outlet (6) as a duct.

According to the configuration of the above embodiment, the only thing installed around the opening (4) for ventilation is the outlet duct (5), that is, the outlet (6). Opening (
4) It does not obstruct sunlight from entering the room. Furthermore, since the blower (8), which requires maintenance, is installed on the ground, maintenance workability is good. And the blower (8)
By stopping the opening (4), natural ventilation through the chimney effect through the opening (4) can be smoothly performed, and by operating the blower (8) to form a swirling upward airflow, indoor air can be circulated through the opening (4). ) can be used to generate forced ventilation upward and outward. In addition, since the swirling updraft acts as an air curtain with outward centrifugal force against the opening (4), the strength of the swirling updraft can be adjusted depending on the amount of rain or snowfall. It is possible to prevent rain and snow from entering the room through the opening (4) by repelling the rain and snow to the outer periphery of the opening (4).

[Another example]

Another embodiment of the present invention will be shown below.

[1] In the above embodiment, the number of openings (4) is one, but the number of openings (4) is not limited.

[2] In the above embodiment, it was applied to a dome-shaped building, but
The form of the building does not matter.

[3] In the above embodiment, the frame (1) is a blower duct from the blower (8) to the outlet (6), but the blower duct may be provided separately.

[4] In the above embodiment, the opening (4) is formed into a hexagonal shape in plan view, but the shape of the opening (4) is not limited.

[5] The outlet (6) may consist of an outlet for forming a swirling airflow and an outlet for forming an ascending airflow.

[6] Note that although reference numerals are written in the claims section for convenience of comparison with the drawings, the present invention is not limited to the structure of the accompanying drawings by such entry.

[Brief explanation of drawings]

Figures 1 to 4 show examples of the present invention, with Figure 1 being a vertical front view, Figure 2 being a sectional view of the steel frame, Figure 3 being a plan view of the main parts, and Figure 4 being the main parts. FIG. 5 and 6 show a conventional example, with FIG. 5 being a front view and FIG. 6 being a longitudinal side view. (1)...Frame, (3)...Roof, (
4)...Opening, (6)...Blowout outlet, (
8)...Blower.

Claims (1)

[Claims] 1. Ventilation equipment for a building in which an opening (4) is formed in the roof (3), wherein the opening (4) is provided around the opening (4).
) A forced ventilation means for supplying air to the air outlet (6) by arranging the air outlet (6) to form a swirling upward air current around the axis including the center of or near the center of the air outlet (6). Ventilation equipment for buildings equipped with 2. The roof (3) includes a pipe frame (1), and the forced ventilation means is a means for guiding air blown by the blower (8) through the pipe frame (1) to the outlet (6). The ventilation equipment for a building according to claim 1.