JP2003019221A - Added room pressurizing/smoke-discharging system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a differential pressure between an added room and a hallway at a suitable range while avoiding an excessive portion of pressurized air fed to the added room when a fire-protective door is closed from being fed to a fire room side. SOLUTION: This added room pressurizing/smoke-discharging system is used for a building equipped with a living room D, the hallway C which is adjacent to the living room D, and the added room B which is adjacent to the hallway C through a fire-preventive door 2, and communicates with an evacuation route A. In such an added room pressurizing/smoke-discharging system, air-feeding equipment 10 which feeds pressurized air to the added B, and an air discharging system 20 which discharges the air in the added room B through a differential pressure damper 22 are provided. In this case, the differential pressure damper 22 opens when the pressure of the added room B becomes a specified value or higher. Also, the air-feeding equipment 10 is equipped with an air blower 16 of which the output can be changed. At the same time, the air-feeding equipment 10 is equipped with a pressure sensor 19 which detects the variation of the fed air pressure to the added room B, and a control means 18 which controls the output of the air blower 16 in a manner to suppress the variation of the fed air pressure in response to a detected signal of the pressure sensor 19.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an evacuation route (emergency staircase, emergency elevator, etc.) by closing a fire door.
By supplying air (pressurized air) at a pressure higher than atmospheric pressure to the annex formed near the entrance of the building, smoke can be prevented from entering the evacuation route and the safety of the evacuation route can be secured. The present invention relates to a room pressurized smoke exhaust system, and more particularly to an attached room pressurized smoke exhaust system suitable for a multi-story building such as a high-rise building.

[0002]

2. Description of the Related Art As a conventional example of this type of system, one disclosed in Japanese Patent Laid-Open No. 11-319126 is known. The outline of the conventional system will be described with reference to FIGS. In the figure, reference numeral A is an evacuation route, and an auxiliary room B is provided in the vicinity of the entrance of the evacuation path A so as to be able to be shielded through the first fire door 1, and the second room is provided in the auxiliary room B. Fire door 2
The corridor C is adjacent to the corridor C, and the room D is adjacent to the corridor C via the third fire door 3. The living room D is arranged so as to surround the corridor C, for example.

In the normal state, the first fire door 1 is closed, and the second fire door 2 and the third fire door 3 are open, and when a fire occurs in the living room D,
After the evacuation from the room D is completed, the second fire door 2 and the third fire door 3 are closed.

On the other hand, the auxiliary room B is connected to an air supply duct 11 of an air supply equipment 10 for sending outside air toward the auxiliary room B in the event of a fire, and the living room D is provided with the smoke therein. The smoke exhaust duct 31 of the smoke exhaust equipment 30 that discharges to the outside is connected, and these air supply duct 11 and smoke exhaust duct 3 are connected.
1 is provided with an air supply damper 12 and a smoke exhaust damper 32 that can be opened and closed, respectively. Furthermore, the annex B and corridor C above
A bypass damper 8 is provided between and to secure a proper air flow between them when they are shielded by the second fire door 2 (FIG. 13).

In a building equipped with such a system, when a fire occurs in the room D, the smoke detector (not shown) detects the fire, and the smoke exhaust facility 30 is detected based on the detected signal. Is activated and smoke exhaust damper 3
2 is opened, the air supply equipment 10 is operated, and the air supply damper 12 is opened. As a result, the living room D is brought into a negative pressure state as smoke is discharged, and the annex B
And the corridor C is brought into a pressurized state by forced air supply of the outside air, thereby forming a flow of air from the annex B to the living room D via the corridor C as shown by a thick arrow in the figure.
Smoke, high-temperature gas, and the like are suppressed from flowing into the corridor C and the annex B, and the spread of the fire is suppressed.

When smoke enters the corridor C as the fire progresses, the second sensor between the auxiliary room B and the corridor C is detected based on a signal from a smoke detector (not shown) provided in the corridor C. The fire door 2 is closed, but at this time, the internal pressure of the auxiliary chamber B may change depending on the opening / closing state of the second fire door 2, so that the second fire door 2 may cause an opening / closing obstacle. The bypass damper 8 releases the excess air in the annex B to the corridor C side so that the differential pressure between the annex B and the corridor C is maintained at an appropriate value.

[0007]

However, in the above system, the surplus of the pressurized air supplied to the auxiliary room B is supplied to the fire room (living room D) side via the bypass damper 8. There was a risk of promoting the progress of the fire.

The present invention is intended to effectively solve the problems of such a conventional system, and the surplus of the pressurized air supplied to the auxiliary chamber when the fire door is closed is supplied to the fire chamber side. To provide a pressurized smoke exhaust system for an annex that can maintain the pressure difference between the annex and the corridor appropriately while ensuring safety during evacuation and fire extinguishing activities. The purpose is.

[0009]

According to a first aspect of the present invention, there is provided a pressurized smoke exhaust system for an attached room, a room, a corridor adjacent to the room, and a corridor adjacent to the corridor via a fire door and connected to an evacuation route. In a pressurized smoke exhaust system for a building with an annex, an air supply facility for supplying pressurized air to the annex,
An exhaust system for discharging the air in the auxiliary chamber via a differential pressure damper that opens when the pressure in the auxiliary chamber is above a certain level.

According to a second aspect of the present invention, in the first aspect, the air supply equipment is provided with a blower having a variable output for sending pressurized air to the auxiliary chamber. .

According to a third aspect of the present invention, in the second aspect, the air supply facility detects a pressure sensor for detecting a change in the supply pressure to the auxiliary chamber, and the change in response to the detection signal of the pressure sensor. A control means for controlling the output of the blower in order to suppress it is provided.

According to a fourth aspect of the present invention, the building is a multi-story building, and the air supply equipment has a standing duct extending in a vertical direction of the multi-story building and the annex on each floor branched from the standing duct. And a horizontal duct that guides pressurized air to the blower, the blower is connected to one end of the standing duct and output controlled according to the conditions of each floor of the building, and the exhaust system of the annex of each floor is As in the case of the air supply equipment, the exhaust air is exhausted from an exhaust port outside the building provided at the upper part of the building through a standing duct that joins the exhaust ducts of each floor.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, a smoke exhaust facility for forced smoke exhaust and an air supply duct interlocking with the operation of the smoke exhaust facility are provided in the living room. It is characterized by that.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the building is a multi-story building, and when a fire occurs, the air supply equipment is at least one of upper and lower floors of the fire occurrence floor. It is characterized in that pressurized air is supplied to an annex of a floor to maintain the entire space of at least one of the floors in a pressurized state.

According to the supplementary room pressurized smoke exhaust system according to any one of claims 1 to 6, when a fire occurs in the living room, the air supply equipment is operated to supply air to the supplementary room. Pressurize the attached room. Thereby, a flow of air from the attached room to the living room through the corridor can be formed, and it is possible to prevent smoke, high-temperature gas, or the like from flowing into the corridor or the attached room. In addition, when smoke enters the annex from the corridor, the pressure in the annex increases and the differential pressure damper operates, and the exhaust system exhausts smoke from the annex. Therefore, safety is ensured during evacuation and fire extinguishing activities. When the fire door between the annex and the corridor is closed as the fire progresses, air is supplied to the annex and air is exhausted through the differential pressure damper at the same time in that state, and the annex is kept constant. Maintained under pressure. Therefore, all the excess pressurized air will be exhausted through the differential pressure damper, so excess air will not be supplied to the fire room (living room) side, and the promotion of the fire will be mitigated. As a result, even greater safety is ensured during evacuation and fire extinguishing activities.

Here, as in the invention described in claim 2,
If a blower with variable output is installed in the air supply equipment, it is possible to change the air supply amount and air pressure according to the conditions of the annex room to be air-supplied. It can be carried out.

Further, when the output of the blower is controlled according to the fluctuation of the supply pressure to the auxiliary chamber as in the invention described in claim 3, even if the pressure of the auxiliary chamber is large, such as when the fire door is opened or closed. You will be able to respond immediately. That is, the pressurization state of the auxiliary chamber is kept constant by opening and closing the differential pressure damper, but it may not be able to sufficiently follow large fluctuations such as when the fire door is opened and closed. .
Therefore, in addition to the operation on the exhaust side (outlet side), the air supply side (inlet side) is positively controlled. This speeds up the response when large pressure fluctuations occur.

Further, as in the invention described in claim 4, by controlling the output of the blower in accordance with the conditions of each floor of the multi-story building, it is possible to correct the difference in the air supply capacity at each floor. That is, in the case of a multi-story building, if air is blown from a ground floor, for example, through a long vertical duct, there will be a difference in the air supply capacity to the annex depending on the floor due to the flow path resistance. Can supply sufficient and necessary air. Also, as an exhaust system for the annex on each floor, it is possible to exhaust from the outside exhaust port provided at the top of the building through the vertical duct where the exhaust ducts on each floor merge, as in the air supply equipment. .

When the forced smoke exhaust facility and the air supply duct are provided in the living room as in the fifth aspect of the present invention, the smoke exhaust facility is actuated in the event of a fire to bring the room into a negative pressure state. Therefore, the flow of air from the attached room to the living room through the corridor can be formed more clearly, and the spread of fire from the living room to the corridor can be prevented. However, in that case, if the fire room (living room) side becomes excessively negative pressure due to the smoke exhaust operation, there is a risk that the fire door between the corridor and the annex may be opened or closed. On the other hand, air is supplied by the air supply duct. As a result, the living room can be kept in an appropriate negative pressure state, and the obstacle for opening and closing the fire door between the annex and the corridor can be eliminated.

Further, as in the invention described in claim 6, air is supplied to the attached room on at least one of the upper and lower floors of the fire occurrence floor so that the entire space of the at least one floor is pressurized. By maintaining it, it becomes possible to prevent smoke from entering the floor, and it is possible to prevent smoke from spreading and secure an evacuation route.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. <First Embodiment> FIGS. 1 to 5 show a schematic system configuration of a first embodiment of the present invention applied to a multi-story building such as a high-rise building, and each drawing shows a state in which a floor is viewed from the side. ing. In these drawings, reference symbol A indicates an evacuation route (emergency stairs, emergency elevator, etc.), and an entrance B of the evacuation route A is located near the entrance of the evacuation route A via the first fire door 1 (in the narrow sense, (In addition to the front room), a corridor C is adjacent to the annex B via the second fire door 2, and the corridor C has a third corridor.
The room D is adjacent to the fire prevention door 3 of FIG. The living room D is arranged so as to surround the corridor C, for example.

In a normal state, the first fire door 1 is closed and the second fire door 2 and the third fire door 3 are open. When a fire occurs in the room D, the room D After the evacuation from is completed, the second fire door 2 and the third fire door 3 are adapted to be closed. Further, in this embodiment, the living room D and the corridor C are set to allow natural smoke emission.

This supplementary room pressurized smoke exhaust system comprises an air supply facility 10 for supplying pressurized air (air having a pressure higher than atmospheric pressure) to the supplementary room B on the fire occurrence floor when a fire occurs, and the supplementary room B. Is provided with an exhaust system 20 that allows the air in the auxiliary chamber B to escape to the outside when the pressure is above a certain level, and a control means (control panel) 18 that controls the entire system. The air supply facility 10 includes a blower 16 installed at a ground level, a standing duct 15 extending from a blowout port of the blower 16 in a vertical direction of a multi-story building, and a standing duct 15.
Air supply duct (horizontal duct) 11 branched from each
It has and. The blower 16 has a variable output,
The rotation speed is controlled by the control means 18 via the inverter 19.

The air supply duct 11 on each floor extends to an air supply port 13 opened in the vicinity of the floor in the annex B, and an air supply damper 12 and a pressure sensor are provided in the middle of the air supply duct 11. 1
9 is provided. The supply air damper 12 is controlled to be opened and closed by the control means 18, and the pressure sensor 19 detects the supply air pressure to the auxiliary chamber B and sends a detection signal to the control means 18, and the control means 18 uses the signal to detect the supply pressure.
The output of the blower 16 is controlled via 7.

The exhaust system 20 has a differential pressure damper 2 whose tip is connected to an exhaust port 23 opened near the ceiling surface of the annex B.
An exhaust duct 21 with 2 is provided. Although description of the exhaust system 20 as a whole is omitted, as in the case of the air supply facility 10, the exhaust air is exhausted from an exhaust port outside the building provided on the roof of the building or the like via a standing duct where the exhaust ducts 21 on each floor join. It is like this.

The differential pressure damper 22 provided in the exhaust duct 21 is opened when the differential pressure across the damper (primary side and secondary side) is above a certain level. Play a role in keeping the constant.

Smoke detectors (not shown) are installed in the corridor C and the living room D, and each of these smoke detectors detects a fire that has occurred in the corridor C and the living room D and detects it. The signal is sent to the control means 18.

Next, the operation will be described. As shown in Figure 1,
A fire occurs in the living room D, the smoke detector in the living room D detects the fire, and the fire detection signal is the control means 1
8, the drive signal is sent from the control means 18 to the air supply equipment 10, the air supply damper 12 is opened, the blower 16 is driven, and air is supplied to the auxiliary room B. At this time, the required air supply amount set in advance for each floor is instructed by the control means 18, and the rotation speed of the blower 16 is controlled by the inverter 17, so that a required amount of pressurized air is supplied to the annex B. To be done. When the pressure in the auxiliary chamber B exceeds a certain level due to this air supply, the differential pressure damper 22 opens to allow air to escape, so that the internal pressure of the auxiliary chamber B is kept constant.

As shown in FIG. 1, in the initial stage of a fire, the second fire door 2 is closed, the third fire door 3 is opened for evacuation, and the living room D is passed through a window or a ventilation port. Natural smoke is emitted. As the fire progresses, as shown in FIG. 2, the second fire door 2 between the corridor C and the annex B is used for evacuation.
When is opened, the inside of the ancillary room B is in a pressurized state, so that an air flow (a thick arrow below) is formed from the annex room B through the corridor C to the fire room (room D), As a result, smoke and high-temperature gas are prevented from flowing into the corridor C and the annex B from the living room D, and the safety of evacuation and fire extinguishing activities is maintained. If the pressure in the firebox rises, smoke (illustrated by shading)
Even if the smoke flows from the room D into the corridor C side, the smoke is naturally discharged from the windows and the ventilation openings of the corridor C. As shown in FIG. When the damper 22 is opened, it is discharged to the outside, so that the safety of evacuation to the annex B is maintained.

When the evacuation to the annex B is completed and the second fire door 2 is closed as shown in FIG. 4, air is supplied to the lower part of the annex B and air is exhausted from the upper part of the annex B. The inside of B is kept under an appropriate pressure. In this case, even if smoke enters the supplementary room B, the pressurized air is supplied to the lower portion of the supplementary room B and discharged from the upper portion, so that the disturbance of the smoke layer in the upper portion is prevented and the air in the lower portion is prevented. The cleanliness of the layer can be maintained.

When the second fire door 2 is opened and closed as described above, the pressure in the auxiliary chamber B fluctuates greatly, and the fluctuation is caused by the pressure sensor provided in the air supply duct 11. 1
9 is detected as a change in the supply air pressure, and the blower 16 is controlled so as to suppress the change, so that the antechamber B quickly shifts to an appropriate pressurization state.

Then, as shown in FIG. 5, when the second fire door 2 is closed, the pressurized state in the annex B is properly maintained so that the corridor C and the annex B are separated from each other. A sufficient differential pressure is ensured, whereby the flow of air from the corridor C to the annex B is blocked, smoke and high-temperature gas are prevented from entering the annex B, and the annex B and The spread of fire to the evacuation route A is prevented and the evacuation route is secured. In addition, the excess pressured air in the annex B is all stored in the differential pressure damper 22.
Since it will be exhausted to the outside through the fire room, excess air will not be supplied to the fire room (living room D) side, the promotion of the fire will be moderated, and it will be more effective during evacuation and fire extinguishing activities. Security is ensured.

Even after the second fire door 2 is closed, it may be necessary to open and close the second fire door 2 for evacuation. However, pressure on both sides of the second fire door 2 may be required. Since the difference is appropriately held, it is possible to avoid a problem that the opening / closing operation becomes difficult.

<Second Embodiment> FIGS. 6 to 10 show a second embodiment of the present invention. In addition to the system of the first embodiment, the ancillary room pressurized smoke exhaust system of the second embodiment includes a smoke exhaust facility 30 for forcibly discharging smoke in the living room D when a fire occurs, and mainly the living room D side. Exhaust equipment 50 that compulsorily exhausts and smokes the corridor C when the smoke exhaust equipment 30 is stopped
And the air supply duct 4 for introducing outside air into the living room D so that the living room D does not become an excessive negative pressure state due to the operation of the smoke exhaust facility 30.
1 and 1.

The smoke exhaust facility 30 includes a smoke exhaust fan (not shown), a smoke exhaust duct 31 connecting an intake port of the smoke exhaust fan and a smoke exhaust port 33 installed near the ceiling of the living room D, and the smoke exhaust duct 3.
1 is provided with a smoke exhaust damper 32 provided midway.
Further, the exhaust equipment 50 includes an exhaust fan (not shown), an exhaust duct 51 connecting an intake port of the exhaust fan and an exhaust port 53 installed near the ceiling of the corridor C, and an exhaust damper provided in the middle of the exhaust duct 51. And 52. Further, the air supply duct 41 is branched from an unillustrated standing duct for each floor, and each tip is provided with an air supply port 4 installed in a lower portion of the living room D.
3, and an air supply damper 42 is provided on the way. In addition, each fan and each damper 32, 42, 4
2 is drive-controlled by the control means 18.

Next, the operation will be described. As shown in FIG.
A fire occurs in the living room D, the smoke detector in the living room D detects the fire, and the fire detection signal is the control means 1
8, the drive signal is sent from the control means 18 to the smoke exhaust facility 30, the smoke exhaust damper 32 is opened, the smoke exhaust fan is driven, and the forced smoke exhaust of the room D is performed. The room D is placed in a negative pressure state. At this time, the air supply damper 42 of the air supply duct 41 is opened in conjunction with the smoke exhaust operation, and the outside air is introduced so that the inside of the living room D does not become an excessive negative pressure state.

At the same time, a drive signal is sent from the control means 18 to the air supply equipment 10 for the auxiliary room B, the air supply damper 12 is opened, and the blower 16 is driven to supply air to the auxiliary room B. Is done. At this time, the required air supply amount set in advance for each floor is instructed by the control means 18, and the rotation speed of the blower 16 is controlled by the inverter 17, so that a required amount of pressurized air is supplied to the annex B. To be done. When the pressure in the auxiliary chamber B exceeds a certain level due to this air supply, the differential pressure damper 22 opens to allow air to escape, so that the internal pressure of the auxiliary chamber B is kept constant.

As shown in FIG. 6, in the initial stage of the fire, the second fire door 2 is closed, the third fire door 3 is opened for evacuation, and the living room D is forcibly smoked. . As the fire progressed, as shown in Figure 7, the corridor C
When the second fire door 2 between the room and the annex B is opened, the annex B
Since the inside is pressurized and the inside of the room D is under negative pressure, the air flow (the thick arrow below) from the annex B to the fire room (room D) through the corridor C is positive. In this way, smoke and high-temperature gas are prevented from flowing into the corridor C and the annex B from the living room D as much as possible, and the safety of evacuation and fire fighting activities is maintained. If smoke (shown by hatching) flows from the living room D to the corridor C side, the control means 18 responds to a signal from a smoke detector (not shown) installed in the corridor C from the control means 18. A drive signal is sent to the exhaust equipment 50 to open the exhaust damper 52, the exhaust fan is driven, and the corridor C is exhausted and smoked.

Further, when a fire in the room D progresses and the internal temperature rises, it is necessary to stop the smoke exhaust operation from the room D to prevent the spread of the smoke from the smoke exhaust duct 31, but at that stage. When it becomes, as shown in FIG. 8, the smoke exhaust facility 30 of the living room D is stopped, the air supply duct 41 is closed, and the corridor C
The exhaust equipment 50 is driven to exhaust and smoke from the corridor C. At this time, when the smoke further flows into the annex B, the differential pressure damper 22 is opened and discharged to the outside, so that the safety of evacuation to the annex B is maintained.

When the evacuation to the annex B is completed and the second fire door 2 is closed as shown in FIG. 9, air is supplied to the lower part of the annex B and exhausted from the upper part of the annex to the annex B. The inside of B is kept under an appropriate pressure. In this case, even if smoke enters the supplementary room B, the pressurized air is supplied to the lower portion of the supplementary room B and discharged from the upper portion, so that the disturbance of the smoke layer in the upper portion is prevented and the air in the lower portion is prevented. The cleanliness of the layer can be maintained.

When the second fire door 2 is opened and closed as described above, the pressure in the auxiliary chamber B fluctuates greatly, and the fluctuation is caused by the pressure sensor provided in the air supply duct 11. 1
9 is detected as a change in the supply air pressure, and the blower 16 is controlled so as to suppress the change, so that the antechamber B quickly shifts to an appropriate pressurization state.

Then, as shown in FIG. 10, when the second fire door 2 is closed, the pressurized state in the annex B is properly maintained, so that the corridor C and the annex B are separated from each other. A sufficient differential pressure will be secured, which will lead to corridor C
The flow of air from the room to the auxiliary room B is blocked, smoke and high temperature gas are prevented from entering the auxiliary room B, and the auxiliary room B and the evacuation route A are blocked.
Fires will be prevented from spreading and the evacuation route will be secured. In addition, the excess pressured air in the annex B is all stored in the differential pressure damper 22.
Since it will be exhausted to the outside through the fire room, excess air will not be supplied to the fire room (living room D) side, the promotion of the fire will be moderated, and it will be more effective during evacuation and fire extinguishing activities. Security is ensured. At this stage, corridor C
Exhaust equipment 50 is also stopped.

Even after the second fire door 2 is closed, it may be necessary to open and close the second fire door 2 for evacuation, but the pressure on both sides of the second fire door 2 may be necessary. Since the difference is appropriately held, it is possible to avoid a problem that the opening / closing operation becomes difficult.

<Third Embodiment> Next, a third embodiment of the present invention will be described with reference to FIG. The attached room pressurized smoke exhaust system of the third embodiment is a system in which a new control function is added to the system of the second embodiment. The basic configuration is the same as that of the second embodiment, and the content of control on the fire occurrence floor is also the same as that of the second embodiment.

The difference is that at the time of a fire, the air supply equipment 10 supplies pressurized air not only to the annex B on the fire occurrence floor but also to the annex B on the upper and lower floors of the fire occurrence floor. By keeping the space above and below the fire occurrence floor with the second and third fire doors 2 and 3 open, it is possible to prevent smoke from entering the fire occurrence floor to other floors. That is what I did. Here, air is supplied from the blower 16 to the standing duct 1 to the fire-occupied floor and each annex B on the upper and lower floors.
5, through the air supply duct 11 and the air supply damper 12. In this case, each air supply amount can be adjusted by controlling the opening degree of the air supply damper by the control means 18, and each air supply pressure can be set based on the signal from the pressure sensor 19. In FIG. 11, 25 is the exhaust system 20.
Vertical duct that joins the exhaust ducts of
Is a standing duct for introducing outside air into the air supply duct 41 of the living room D. The outdoor exhaust port of the standing duct 25 is arranged at the upper part of the building, and the outside air intake of the standing duct 45 is arranged at the ground level.

In this example, the case where both the upper and lower floors of the fire-generating floor are pressurized is described. However, only the floor that prevents smoke from entering, that is, only one of the upper floor and the lower floor is added. You may make it a pressure state.

Further, in each of the above-mentioned embodiments, the air supply on each floor
In general, the case where exhaust and smoke are exhausted through the standing duct common to all floors was shown, but by providing the outside air intake and the outside exhaust port directly on the outer wall of the building, it is possible to supply air to each floor independently. It is also possible to exhaust and smoke.

[0048]

As described above, according to the first to sixth aspects of the present invention, by exhausting the surplus due to the pressurized air supply to the auxiliary chamber through the differential pressure damper, the auxiliary chamber can be properly operated. While maintaining a pressurized state, the supply of air to the firebox side can be blocked to prevent the progress of the fire, ensuring safety during evacuation and extinguishing activities. In particular, according to the invention of claim 2, since it is possible to change the supply air amount and the supply air pressure according to the conditions of the supplementary room to be supplied with air, the supplementary room is supplied with necessary and sufficient air. be able to. Further, according to the invention of claim 3, since the output of the blower is controlled according to the fluctuation of the supply pressure to the auxiliary chamber, it is possible to immediately cope with a large pressure fluctuation in the auxiliary chamber such as when the fire door is opened and closed. And the response will be faster. Further, according to the invention of claim 4, since the output of the blower is controlled according to the condition of each floor, it is possible to correct the gap of the air supply capacity in each floor, and to perform necessary and sufficient air supply to any floor. be able to.

According to the fifth aspect of the present invention, since the living room can be put in a negative pressure state in the event of a fire, it is possible to more clearly form the air flow from the attached room to the living room through the corridor. , It is possible to prevent the spread of fire from the living room to the corridor. Moreover, since the living room can be maintained in an appropriate negative pressure state, it is possible to avoid an obstacle to open and close the fire door between the annex and the corridor.

Further, according to the invention of claim 6, by supplying air to the attached room on at least one of the upper and lower floors of the fire occurrence floor, smoke is prevented from spreading to the upper and lower floors of the evacuation route. It is possible to secure it.

[Brief description of drawings]

FIG. 1 is a schematic system configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a schematic system configuration diagram showing a first embodiment of the present invention.

FIG. 3 is a schematic system configuration diagram showing a first embodiment of the present invention.

FIG. 4 is a schematic system configuration diagram showing a first embodiment of the present invention.

FIG. 5 is a schematic system configuration diagram showing a first embodiment of the present invention.

FIG. 6 is a schematic system configuration diagram showing a second embodiment of the present invention.

FIG. 7 is a schematic system configuration diagram showing a second embodiment of the present invention.

FIG. 8 is a schematic system configuration diagram showing a second embodiment of the present invention.

FIG. 9 is a schematic system configuration diagram showing a second embodiment of the present invention.

FIG. 10 is a schematic system configuration diagram showing a second embodiment of the present invention.

FIG. 11 is a schematic system configuration diagram showing a third embodiment of the present invention.

FIG. 12 is a schematic system configuration diagram of a conventional example.

FIG. 13 is a schematic system configuration diagram of a conventional example.

[Explanation of symbols]

A evacuation route B attached room C corridor D living room 2 second fire door 10 Air supply equipment 15 Vertical duct 16 blower 18 Control means 19 Pressure sensor 20 exhaust system 22 Differential pressure damper 30 smoke exhaust equipment 41 Air supply duct

Claims (6)

[Claims] 1. A pressurized smoke exhaust system for a building provided with a living room, a corridor adjacent to the living room, and an annex adjoining the corridor via a fire door and communicating with the evacuation route. It is provided with an air supply facility for supplying pressurized air to the chamber, and an exhaust system for discharging the air in the auxiliary chamber via a differential pressure damper that opens when the pressure in the auxiliary chamber is above a certain level. The attached room pressurized smoke exhaust system. 2. The pressurized smoke exhaust system according to claim 1, wherein the air supply equipment comprises a blower with a variable output for sending pressurized air to the accessory chamber. 3. The pressure supply device, wherein the air supply equipment detects a change in air supply pressure to the auxiliary chamber, and a control means for controlling the output of the blower so as to suppress the change in accordance with a detection signal of the pressure sensor. The attached room pressurized smoke exhaust system according to claim 2, further comprising: 4. The building is a multi-story building, and the air supply equipment comprises a standing duct extending in a vertical direction of the multi-story building and a lateral duct branching from the standing duct to introduce pressurized air to the annex on each floor. And a blower duct, the blower is connected to one end of the standing duct and the output is controlled according to the conditions of each floor of the building, and the exhaust system of the annex of each floor is the same as the air supply equipment. 4. The attached room pressurized smoke exhaust system according to claim 2 or 3, wherein the air is exhausted from an exhaust port outside the building provided in the upper part of the building through a standing duct where the exhaust ducts of each floor join. 5. The smoke exhaust facility for forced smoke exhaust, and the air supply duct interlocking with the operation of the smoke exhaust facility are provided in the living room. Ancillary room pressurized smoke exhaust system. 6. The building is a multi-story building, and in the event of a fire, the air supply facility supplies pressurized air to an attached room on at least one of the upper and lower floors of the fire, and at least one of the above The pressurized smoke exhaust system according to any one of claims 1 to 5, wherein the entire space of the floor is maintained under pressure.