JPH04113839U - factory ventilation - Google Patents

Abstract

(57) [Summary] [Purpose] To completely ventilate indoor air in foundries, etc. without adversely affecting workers. [Structure] A frame member 12 is fitted into a side wall 21 of a building frame of a factory to form a through hole 13. A hood 16 that opens upward into the factory interior 20a is provided so as to cover the through hole 13.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This is a technology related to ventilation in factory rooms such as foundries.

0002

[Conventional technology]

In foundries, the temperature inside the factory increases to heat treat the metal. Also, During the manufacturing process, toxic gases are generated due to combustion of various substances and other causes. Therefore, It is necessary to ventilate the air inside the factory room. As an example of the ventilation, the ventilation shown in FIG. 4 was performed. Factory 1 building frame 2 Fresh air is taken in from the window 3 and the ventilator 5 installed on the roof 4. It was getting worse. By introducing fresh air, the air in the factory room 1a becomes The dust is collected in a dust collector 7 via a duct 6. of the factory room 1a collected in the dust collector 7. After the dust contained in the air is removed, the air is exhausted to outside the factory room 1b. It was By the way, the fresh air taken in through window 2 will directly hit the workers. Ru. In the winter, the fresh air is cold, so workers must , had to work. In addition, in cold regions, exposure to quite cold air may cause I had to work on it. Furthermore, on windy days, please enter through window 3. The fresh air coming from the factory may cause dirt to get into the eyes of workers, or prevent dust from entering the factory room 1a. Documents, etc., were sometimes blown away. Furthermore, window 3 was widened to increase the amount of ventilation. When it is opened, the dust that had settled on the floor of Factory 1 flies up and fills the air in Factory Room 1a. It was making it worse. Therefore, in order to prevent the cold air from directly hitting the workers, we placed a screen facing Window 3 (Fig. The company responded by setting up the following:

0003

[Problem that the idea aims to solve]

However, it is not possible to put up screens on the high windows of Factory 1. Also Even if you put up a screen facing window 3, cold air will still enter the factory room from both sides of the screen. It's coming. Furthermore, in the case of strong winds, the force of the wind can be slightly weakened by the screen. , go around both sides of the screen and enter factory room 1a. Furthermore, as shown in the same figure, the hot air in the factory room 1a is relatively convective near the ceiling. It stays at the location 1c where there is no water. The hot air contains dust, toxic gas, etc. from the factory room 1a. This meant that the air in factory room 1a remained contaminated. . As mentioned above, poor environmental conditions for workers are the cause of reduced casting production efficiency. It had become.

0004

[Means to solve the problem]

The present invention has been devised in view of the above-mentioned problems. Therefore, the method adopted in this invention is the ventilation opening of the foundry, etc. A through hole is provided in the side wall of the frame, and the through hole has a hood that opens upward into the factory room. It is located where it is located.

[0005]

[Effect]

According to the ventilation port according to the present invention, a hood is provided that opens upward in the factory room. There is. Therefore, fresh air coming in from outside the factory is guided through the hood, It is sent to the upper part of the factory room. In other words, fresh air directly hits the worker. There isn't. It also pushes away the hot air that has accumulated in the upper part of the factory room.

[0006]

【Example】

Examples will be described below with reference to the drawings.

First, a first embodiment will be described using FIGS. 1 and 2. The ventilation opening 11 consists of a frame material 12, a louver 14, and a hood 16. A square frame member 12 is fitted into a side wall 21 of a building frame of a factory 20 when viewed from the front, and a through hole 13 is formed by the frame member 12. A louver 14 is provided in the through hole 13. The wings 15 of the louver 14 are fixed to the frame member 12. Note that the blades 15 may be of a variable type so that the air volume can be adjusted. A hood 16 is provided to cover the through hole 13. The hood 16 consists of a mounting part 17 and a guide part 18, and is usually made of a corrosion-resistant metal plate such as aluminum or a collar. The attachment portions 17 are attached to the vicinity of the three peripheral edges of the through-hole 13 except for the upper edge using screws or the like. The guide portion 18 extends from the attachment portion 17 . The upper peripheral edge of the guide portion 18 and the side wall 21 define an opening 19 that opens upward into the factory interior. In this example, the width of the factory building frame is 29 m, and the height is 18 m. The dust collection air volume of the dust collector 25 is 2200 m ³ /min. The state of ventilation in a factory 20 equipped with ventilation ports 11 will be explained using FIG. 2. Fresh air outside the factory 20b is drawn into the factory interior 20a through the through hole 13 of the side wall 21, and is directed upward by the guide portion 18 of the hood 16. Then, it is sent to the upper part of the factory interior 20a through the opening 19. The fresh air is guided upward into the factory room 20a, as shown by the solid arrow. On the other hand, fresh air is also taken into the factory room 20a from a ventilator 23 installed on the roof 22. The hot air staying above the factory room 20a is pushed down by both types of fresh air, and is absorbed into the duct 24 as shown by the dashed-dotted arrow. After dust is removed from the air absorbed by the duct 24 by a dust collector 25, it is exhausted to the outside of the factory 20b. According to this embodiment, fresh air does not directly hit the worker. Furthermore, hot air does not accumulate above the factory interior 20a, and the air in the factory interior 20a is almost completely ventilated.

[0008] Next, a second embodiment will be described using FIG. 3. This ventilation port 31 The difference from the example is that a screen door 32 is provided to cover the louver 14, and the hood 1 The point is that a lid member 33 is provided to the opening 19 of No. 6. Other members are the same as those in the first embodiment. I will omit the explanation. Note that the same reference numerals as in the first embodiment indicate the same members. It is something. The lid member 33 is provided with a hinge 34 at one end and can be opened and closed. On the other end, A locking tool 35 is provided. Further, the mounting plate 36 on which the lid member 33 is placed is made of a frame material. It is attached to 12. The locking tool 35 is rotatable around the shaft portion 35a, It can also be locked to the mounting plate 36 and also to the upper edge of the hood 16. Yes (indicated by the chain double-dashed line). According to this embodiment, the screen door 32 prevents insects and the like from entering the factory interior 20a. can be removed. In addition, since the lid member 33 is provided, ventilation is prevented. If it is not necessary, the lid member 33 may be closed.

[0009] The ventilation opening according to the present invention is not limited to the above-mentioned embodiments. For example, The guide portion of the card may be formed into a gently curved shape when viewed from the side. Ma Alternatively, the upper edge of the guide portion of the hood may be extended to the upper part of the factory room. In this case, install a fan underneath the hood to help blow in fresh air. do it. Furthermore, the material of the hood should be made of heat-resistant plastic, etc. You can also do that. As detailed above, the ventilation port according to the present invention is suitable depending on the implementation mode. It can be changed as needed.

0010

[Effect of the idea]

According to the ventilation hole according to the present invention, the through hole provided in the side wall of the building frame of the factory A hood is provided that opens upward into the factory room. Therefore, it is necessary to penetrate from outside the factory. Fresh air drawn in through the mouth is sent upward into the factory room by the hood. Ru. In other words, cold fresh air does not directly hit the workers during winter or the like. Also , dust accumulated in the upper part of the factory room, hot air containing toxic gases, etc. It is released and does not stay there. Therefore, foundries equipped with ventilation holes according to the present invention Now, almost complete ventilation can be achieved.

[Brief explanation of drawings]

FIG. 1 shows a first embodiment, and is a cross-sectional perspective view of a ventilation port.

FIG. 2 is a schematic diagram of factory equipment equipped with a ventilation port according to the first embodiment.

FIG. 3 shows a second embodiment, and is a side sectional view of a ventilation port.

FIG. 4 shows the prior art and is a schematic diagram of factory equipment showing ventilation conditions.

[Explanation of symbols]

11, 31...Ventilation vent 12...Frame material 13...Through hole 16...Hood 19...Opening

Claims (1)

[Scope of utility model registration request] [Claim 1] A ventilation opening for a foundry, etc., characterized by a through-hole provided in a side wall of a building frame of the factory, and a hood that opens upward into the factory interior. factory ventilation.