JPH11134036A - Pressure releasing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure releasing device, with which increased room pressure can be satisfactorily released, by providing an outer frame body having an opening window, cover plate arranged on the backside of the opening window to open/close the opening window and spring for biasing the cover plate in the closing direction of the opening window at all the time. SOLUTION: Inside an outer frame 2, a cover plate 5 is arranged for covering so as to open/close an opening window 3, a cushion member 4 is stuck on the front side of the cover plate 5, and the opening window 3 is tightly closed by tightly abutting the cushion member 4 to the opening window 3. Between an outer holding frame 11 and an inner holding frame 9, a coil-shaped spring 17 is fitted. Thus, the spring 17 biases the cover plate 56 in the closing direction of the opening window 3 at all the time. Therefore, the cover plate 5 is ordinarily in a state of closing the opening window 3 by the spring 17 but when the room pressure is increased by expanding fire fighting gas or the like inside a room, this increased room pressure presses the cover plate 5 against the bias of the spring 17, and the opening window 3 can be automatically opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-reducing device capable of satisfactorily releasing indoor pressure when indoor pressure rises.

[0002]

2. Description of the Related Art Conventionally, when a fire extinguishing gas is used to extinguish a fire in a closed indoor space or the like, the fire extinguishing gas expands in the closed room and the indoor pressure is reduced. There was also a possibility that it would rise extremely, causing damage to the interior of the room and the like. However, conventionally, there is no device for satisfactorily releasing the increased indoor pressure, and there is a problem that it is difficult to use a fire extinguishing gas or the like in a closed space.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide an evacuation device capable of satisfactorily releasing a raised indoor pressure. A first gist is a pressure relief device that is provided at an opening communicating between the room and the outside and opens when the indoor pressure rises to release the pressure to the outside. The pressure relief device has an outer frame having an opening window. And a cover plate provided on the back side of the opening window so as to be able to open and close the opening window, and a spring for always urging the cover plate in a direction to close the opening window. Also, the second
The gist of the invention is that the cover plate has one end connected to the outer frame via a hinge and the other end connected to the spring.

[0004]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a half sectional perspective view of the pressure-reducing device according to the first embodiment. The pressure-reducing device 1 has an outer frame 2 whose back side is open. A rectangular frame is formed by the walls 2a, 2a and the pair of short walls 2b, 2b.
A bottom wall 2c is integrally formed on the bottom side, and an opening window 3 is formed in the bottom wall 2c in a penetrating manner.

[0005] A cover plate 5 for covering the opening window 3 so as to be openable and closable is provided in the outer frame body 2. The material 4 is configured to be in close contact with the opening window 3 to seal the opening window 3. One end side of the cover plate 5 is supported by a hinge 6 so as to be openable and closable. The hinge 6 is fixed to a short wall portion 2b of the outer frame body 2 via a bolt 7, and a fixed side member 6a. 6a is constituted by a rotation side member 6b rotatably connected by a shaft 6c, and the rotation member 6b is provided with a bolt 8 on one end side of the cover plate 5 in the longitudinal direction.
It has been fixed through.

A bolt 1 is provided at the other end of the cover plate 5.
0, the inner receiving frame 9 is fixed, and the inner receiving frame 9 is formed in a cylindrical shape with an open back side. An outer receiving frame 11 of the same shape is arranged facing the inner receiving frame 9 at an interval. The outer receiving frame 11 is provided with a bolt 13
The support frame plate 12
Is composed of a rising piece 12a fixed to the long wall portion 2a of the outer frame 2 via bolts 16, 16 and a horizontal piece 12b extending horizontally from the rising piece 12a. 12b is a spring pressure adjusting nut 13
Is attached by tightening a lock nut 15 with the outer receiving frame 1 attached to a lower end of the spring pressure adjusting bolt 13.
A coil-shaped spring 17 is fitted between the outer receiving frame 11 and the inner receiving frame 9. Therefore, the spring 17 is configured to always bias the cover plate 5 in a direction to close the opening window 3. Further, the spring 17 easily adjusts the urging force of the spring 17 by loosening the lock nut 15 and adjusting the spring pressure adjusting nut 14 with respect to the bolt 13, thereby setting the spring pressure according to the installation location. It is configured to be able to.

FIG. 2 is a cross-sectional configuration view of FIG. 1, and FIG. 3 shows, with imaginary lines, a state in which the cover plate 5 opens the opening window 3 against the urging force of the spring 17. I have. As shown in FIG. 3, the opening window 3 is arranged on the room R side. For example, a fire extinguishing gas is used in the closed room R, and the internal pressure of the room R rises due to expansion of the fire extinguishing gas. Then, the cover window 5 is pushed by this internal pressure to open the opening window 3,
The pressure in the room R is released to the outside O.

FIG. 4 shows the mounting state of the pressure-reducing device 1. In FIG. 4, an opening K is formed in a wall W of the building so as to penetrate the room R and the outdoor O, and a table frame 20 is attached to the room R side. A surface plate 21 made of a punching plate is attached. An outer frame 22 is attached to the outdoor O side of the wall W, and the pressure-reducing device 1 is fixed to the outer frame 22 via bolts or the like. The corner member 2 of the outer frame 22
2a and the stop member 20a of the front frame 20 are connected by screws 23, the front frame 20 and the outer frame 22 are fixed to the opening K, and the pressure-reducing device 1 can be fixed to the opening K. In addition,
The screw 23 allows a screwdriver to pass through a punching hole of the surface plate 21 from the room R side and be tightened by the screwdriver.

In FIG. 5, the pressure relief device 1 is connected to an outer frame 2.
2 shows a state where five units are arranged and installed integrally. further,
FIG. 6 shows a state in which ten pressure-reducing devices 1 are assembled and installed on the outer frame 22. As described above, the number of the pressure-reducing devices 1 is appropriately selected and increased / decreased according to the installation location, and one pressure-reducing device 1 may be attached in a narrow enclosed space.
In the case of a large closed space, ten or more pressure-reducing devices 1 can be assembled and used. FIG. 7 is a cross-sectional configuration diagram of a fixed state when the ten pressure-reducing devices of FIG. 6 are attached to the opening K of the wall surface W.

Next, FIG. 8 shows a second embodiment. The pressure relief device 1 shown in FIG. 8 is substantially the same as the pressure relief device of FIG. The same members will be described with the same reference numerals. The pressure relief device 1 of FIG.
A pair of support frame plates 12, 12 are fixed to the outer frame body 2,
Each support frame plate 12 is provided with an outer receiving frame 11 and a spring 17, and the cover plate 5 is also provided with the outer receiving frames 11 and 1.
1. Two inner receiving frames 9, 9 are provided so as to correspond to 1. Each inner receiving frame 9 is fixed to the cover plate 5 via a fixing member 25, and a spring pressure adjusting bolt 26 is erected on the fixing member 25.
A spring pressure adjusting nut 27 is screwed so as to adjust the pressure of No. 7 and the tip of the spring pressure adjusting bolt 26 is fixed to the support frame plate 12 by tightening a wing nut 28.

In this embodiment, the cover plate 5 is urged by the two springs 17 in the direction in which the cover plate 5 is closed with respect to the opening window 3.
When the pressure in the room R rises, the rising pressure pushes the cover plate 5 against the urging force of the spring 17 to open the opening window 3 so that the room pressure can be satisfactorily released to the outside.
In the pressure relief device 1 of FIG. 8 as well, the number of installations can be appropriately selected and installed in accordance with the installation location, and the pressure of the spring 17 can be adjusted appropriately according to the site. Can be done.

In this embodiment, the case where the pressure-reducing device is attached to the opening K formed in the wall W of the building has been exemplified. ) Can also be provided.

[0013]

According to the present invention, there is provided a pressure relief device which is provided at an opening communicating between a room and the outside and opens when the indoor pressure rises to release the pressure to the outside. The pressure relief device has an opening window. By providing an outer frame, a cover plate disposed on the back side of the opening window so as to be able to open and close the opening window, and a spring that always biases the cover plate in a direction to close the opening window, Normally, the cover plate closes the opening window by a spring, and when the indoor pressure rises due to the expansion of fire extinguishing gas in the room, the increased room pressure presses the cover plate against the urging force of the spring. And
The opening window can be automatically opened, the indoor pressure can be satisfactorily released from the opening window to the outside, and there is an effect that breakage or the like due to an increase in the indoor pressure can be favorably prevented.

The cover plate has one end connected to the outer frame through a hinge, and the other end is in contact with the spring, so that only one spring may be used. This has the effect of simplifying the structure and components and reducing costs.

[Brief description of the drawings]

FIG. 1 is a half cross-sectional perspective configuration diagram of a pressure-reducing device according to a first embodiment.

FIG. 2 is a side sectional configuration diagram of FIG. 1;

FIG. 3 is an explanatory side view showing a state where a cover plate of the pressure-reducing device in FIG. 1 is opened and closed;

FIG. 4 is a cross-sectional configuration diagram of a state where it is fixed to an opening formed in a wall.

FIG. 5 is an arrangement configuration diagram in a state where five pressure relief devices are installed.

FIG. 6 is an installation configuration diagram in a state where ten pressure-reducing devices are further installed.

FIG. 7 is a side sectional view showing a state where the wall surface in FIG. 6 is fixed to an opening.

FIG. 8 is a partially cutaway perspective view of a pressure-reducing device according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Evacuating device 2 Outer frame 3 Opening window 4 Cushion material 5 Cover plate 6 Hinge 9 Inner receiving frame 11 Outer receiving frame 12 Supporting frame plate 13 Spring pressure adjusting bolt 14 Spring pressure adjusting nut 17 Spring 20 Front frame 22 Outer frame 23 Screw W Wall K opening

Claims (2)

[Claims] A pressure relief device is provided at an opening communicating between the room and the outside, and opens when the indoor pressure rises to release the pressure to the outside. The pressure relief device includes an outer frame having an opening window, ,
A pressure-reducing device, comprising: a cover plate disposed on the back side of the opening window so as to be able to open and close the opening window; and a spring for always urging the cover plate in a direction to close the opening window. . 2. The cover plate according to claim 1, wherein one end of the cover plate is connected to the outer frame via a hinge, and the other end of the cover plate is in contact with the spring. Pressure relief device.