JPS6326660Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an exhaust unit for an air conditioner in a building.

As shown in the schematic plan view in Figure 1A and the elevational view in Figure 1B, the exhaust system in an air conditioning system for a large building such as a factory is constructed by dividing the inside of the building into multiple sections as appropriate, and connecting the central area to the central area. The exhaust unit 1 is installed with the upper part elevated, and exhaust suction ducts 2 having exhaust suction ports 2a to 2e are arranged in each area a to e, respectively. Then turn exhaust fan 3,
Exhaust gas containing waste heat, dirt, etc. from each area is collected through an exhaust suction duct 2, the dirt is removed by a filter 4 of an exhaust unit 1, and the exhaust is discharged outside the factory through an exhaust discharge duct 5. In the case of such an exhaust system, as work in the factory begins and time passes, the contaminated air that is not sucked into the exhaust suction duct 2 gradually gathers in the center of the building, causing the degree of contamination in area c to be high. There is a tendency to Therefore, in the conventional exhaust system, as shown in Fig. 1C, the diameter of the exhaust suction duct 6 in front of the connection part of the exhaust unit 1 is increased, and the exhaust suction duct 6 has a larger diameter (1.5 to 2 times) than the other A suction port 2c was provided. Then, the air volume of the exhaust fan 3 is changed, and the air volume is increased over time to perform exhaustion in accordance with the degree of pollution. However, due to the difference in the degree of pollution depending on time between the central area and other areas as mentioned above,
There were problems in that proper exhaust could not be performed, such as inhaling the air from areas b, d, and e, making the central area c, which was highly contaminated, insufficiently exhausted.

In order to solve the above-mentioned problems, this invention aims to provide an exhaust unit that makes it possible to vary the amount of exhaust air taken into the central area and other areas of the building, thereby making it possible to effectively exhaust air in accordance with the degree of pollution.

This invention will be explained below based on drawings showing embodiments. 2 to 4 show an exhaust unit 11 according to this invention. Exhaust unit 11
In this embodiment, is a rectangular parallelepiped with length, width, and depth of about 4 m, 5 m, and depth, respectively, and an exhaust suction duct 2 is connected to the front wall 12, and a filter 4 is installed inside. Exhaust fan 3 is installed on the rear wall 13.
An exhaust discharge duct 5 equipped with an exhaust gas discharge duct 5 (FIG. 1) is connected, and its rear end is fixed to the outer wall of the factory and communicates with the atmosphere. The above configuration is almost the same as the conventional one, but does not include the suction port 2c and the large diameter duct 6, which conventionally collect the exhaust gas from the central area c. Instead, a plurality of air suction ports 12b are opened in the front wall 12 of the exhaust unit 11 in one row above and below the exhaust suction duct connection port 12a. This front wall opening is equipped with a slide type damper 14 having an opening having the same shape as the air suction port 12b.
The upper and lower sliding dampers 14 can easily slide along the wall surface (arrow B in FIG. 3) by rollers (not shown) and rails 15, respectively. The upper and lower sliding dampers 14 are connected by a link rod 16, and the sliding amount and air intake port 12 are
The opening degree of the air suction port 12b is made proportional to the opening degree, and the opening degree of the air suction port 12b is controlled to an arbitrary degree from fully open to fully closed by a driving device (not shown). Drain drains 17 are also provided at important points on the lower rail 15.

When the exhaust unit 11 configured as described above is installed and the exhaust fan 3 is operated, the exhaust air from each area a, b, d, and e except for the central area c in the building is as follows.
The air is sucked into the exhaust suction duct 2 through the exhaust suction ports 2a, 2b, 2d, and 2e, respectively, and collected in the exhaust unit 11. On the other hand, for the central area c, the slide type damper 14 is opened and exhaust gas is sucked in from the air suction port 12b of the exhaust unit 11 (arrow C in FIG. 4). The exhaust gas collected inside the exhaust unit 11 is cleaned of dirt by a filter 4 and is discharged outside the factory through an exhaust discharge duct 5. Immediately after work begins inside the building, the air in each area, including the central area c, is less contaminated and almost uniform. Keep it open so that the air volume is high, and keep the air volume of the exhaust fan 3 low. As the degree of contamination increases over time, the air volume of the exhaust fan 3 is increased. As more time passes,
Since the central area c is more contaminated than the other areas, the air suction port 12b is opened wide and the amount of suction from the exhaust suction duct 2 is reduced accordingly. During this time, the air volume of the exhaust fan 3 is also controlled. In this way, the amount of suction from the exhaust suction duct 2 and the air suction port 12b can be arbitrarily selected according to the degree of contamination of each area in the building, and the central area where contamination tends to be particularly concentrated can be sufficiently exhausted. Furthermore, the conventional large-diameter duct in the central area is eliminated, and the maintenance space for the large-diameter suction port is also eliminated, reducing the construction cost of the exhaust unit.

As explained above, this idea is based on an exhaust unit that connects exhaust suction ducts with suction ports to each area inside a building such as a factory, and multiple air suction ducts around the exhaust suction duct connection part on the front wall. By installing a sliding damper that fully opens or closes this air intake port, it is possible to vary the amount of exhaust air intake between the central area and other areas inside the building. Effective exhaust can be carried out in accordance with the pollution state of the exhaust unit, thereby promoting energy saving of the exhaust unit.

[Brief explanation of drawings]

Figure 1A is a schematic plan view of the interior of a building in which a conventional exhaust unit is installed, Figure 1B is an elevational view of the same, Figure 1C is an enlarged view of the area around the exhaust unit in Figure 1B, taken in the direction of arrow A, and 2 to 4 show an embodiment of the exhaust unit according to this invention, in which FIG. 2 is a longitudinal sectional view, FIG. 3 is an end view on the front wall side, and FIG. 4 is a perspective view of the main part. 2...Exhaust suction duct, 2a-2e...Exhaust suction port, 5...Exhaust discharge duct, 11...Exhaust unit, 12...Front wall, 12b...Air suction port, 14...Slide type damper, a ~e... Area inside the building.

Claims (1)

[Scope of utility model registration request] A front wall that is located in the central area of a building such as a factory divided into a plurality of areas, is connected to the approximate center of an exhaust suction duct that has suction ports for each of the other areas, and is connected to the exhaust suction duct. and,
The exhaust unit has a container shape and has a rear wall connected to an exhaust discharge duct equipped with an exhaust fan, and has a built-in filter, and has a plurality of air suction ports around the exhaust suction duct connection part of the front wall. An exhaust unit characterized by having a sliding damper that fully opens or closes this air intake port.